Merge branch 'master' into barnabasmolnar/mainmenu-radix

# Conflicts:
#	package.json
#	packages/excalidraw/.size-limit.json
#	packages/excalidraw/components/dropdownMenu/DropdownMenuSub.tsx
#	packages/excalidraw/components/dropdownMenu/DropdownMenuSubContent.tsx
#	packages/excalidraw/components/dropdownMenu/DropdownMenuSubItem.tsx
#	packages/excalidraw/components/dropdownMenu/DropdownMenuSubTrigger.tsx
#	packages/excalidraw/components/main-menu/MainMenu.tsx
#	packages/excalidraw/tests/excalidraw.test.tsx
#	packages/excalidraw/tests/library.test.tsx
#	src/components/Actions.tsx
#	src/components/dropdownMenu/DropdownMenu.scss
#	src/components/dropdownMenu/DropdownMenuItem.tsx
#	yarn.lock
This commit is contained in:
dwelle
2025-08-31 20:18:40 +02:00
1247 changed files with 195439 additions and 80873 deletions
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{
"extends": ["../eslintrc.base.json"]
}
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# @excalidraw/common
## Install
```bash
npm install @excalidraw/common
```
If you prefer Yarn over npm, use this command to install the Excalidraw utils package:
```bash
yarn add @excalidraw/common
```
With PNPM, similarly install the package with this command:
```bash
pnpm add @excalidraw/common
```
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/// <reference types="vite/client" />
import "@excalidraw/excalidraw/global";
import "@excalidraw/excalidraw/css";
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{
"name": "@excalidraw/common",
"version": "0.18.0",
"type": "module",
"types": "./dist/types/common/src/index.d.ts",
"main": "./dist/prod/index.js",
"module": "./dist/prod/index.js",
"exports": {
".": {
"types": "./dist/types/common/src/index.d.ts",
"development": "./dist/dev/index.js",
"production": "./dist/prod/index.js",
"default": "./dist/prod/index.js"
},
"./*": {
"types": "./dist/types/common/src/*.d.ts",
"development": "./dist/dev/index.js",
"production": "./dist/prod/index.js",
"default": "./dist/prod/index.js"
}
},
"files": [
"dist/*"
],
"description": "Excalidraw common functions, constants, etc.",
"publishConfig": {
"access": "public"
},
"license": "MIT",
"keywords": [
"excalidraw",
"excalidraw-utils"
],
"browserslist": {
"production": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all",
"not safari < 12",
"not kaios <= 2.5",
"not edge < 79",
"not chrome < 70",
"not and_uc < 13",
"not samsung < 10"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"bugs": "https://github.com/excalidraw/excalidraw/issues",
"repository": "https://github.com/excalidraw/excalidraw",
"scripts": {
"gen:types": "rimraf types && tsc",
"build:esm": "rimraf dist && node ../../scripts/buildBase.js && yarn gen:types"
}
}
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export class BinaryHeap<T> {
private content: T[] = [];
constructor(private scoreFunction: (node: T) => number) {}
sinkDown(idx: number) {
const node = this.content[idx];
while (idx > 0) {
const parentN = ((idx + 1) >> 1) - 1;
const parent = this.content[parentN];
if (this.scoreFunction(node) < this.scoreFunction(parent)) {
this.content[parentN] = node;
this.content[idx] = parent;
idx = parentN; // TODO: Optimize
} else {
break;
}
}
}
bubbleUp(idx: number) {
const length = this.content.length;
const node = this.content[idx];
const score = this.scoreFunction(node);
while (true) {
const child2N = (idx + 1) << 1;
const child1N = child2N - 1;
let swap = null;
let child1Score = 0;
if (child1N < length) {
const child1 = this.content[child1N];
child1Score = this.scoreFunction(child1);
if (child1Score < score) {
swap = child1N;
}
}
if (child2N < length) {
const child2 = this.content[child2N];
const child2Score = this.scoreFunction(child2);
if (child2Score < (swap === null ? score : child1Score)) {
swap = child2N;
}
}
if (swap !== null) {
this.content[idx] = this.content[swap];
this.content[swap] = node;
idx = swap; // TODO: Optimize
} else {
break;
}
}
}
push(node: T) {
this.content.push(node);
this.sinkDown(this.content.length - 1);
}
pop(): T | null {
if (this.content.length === 0) {
return null;
}
const result = this.content[0];
const end = this.content.pop()!;
if (this.content.length > 0) {
this.content[0] = end;
this.bubbleUp(0);
}
return result;
}
remove(node: T) {
if (this.content.length === 0) {
return;
}
const i = this.content.indexOf(node);
const end = this.content.pop()!;
if (i < this.content.length) {
this.content[i] = end;
if (this.scoreFunction(end) < this.scoreFunction(node)) {
this.sinkDown(i);
} else {
this.bubbleUp(i);
}
}
}
size(): number {
return this.content.length;
}
rescoreElement(node: T) {
this.sinkDown(this.content.indexOf(node));
}
}
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import oc from "open-color";
import type { Merge } from "./utility-types";
export const COLOR_OUTLINE_CONTRAST_THRESHOLD = 240;
// FIXME can't put to utils.ts rn because of circular dependency
const pick = <R extends Record<string, any>, K extends readonly (keyof R)[]>(
source: R,
keys: K,
) => {
return keys.reduce((acc, key: K[number]) => {
if (key in source) {
acc[key] = source[key];
}
return acc;
}, {} as Pick<R, K[number]>) as Pick<R, K[number]>;
};
export type ColorPickerColor =
| Exclude<keyof oc, "indigo" | "lime">
| "transparent"
| "bronze";
export type ColorTuple = readonly [string, string, string, string, string];
export type ColorPalette = Merge<
Record<ColorPickerColor, ColorTuple>,
{ black: "#1e1e1e"; white: "#ffffff"; transparent: "transparent" }
>;
// used general type instead of specific type (ColorPalette) to support custom colors
export type ColorPaletteCustom = { [key: string]: ColorTuple | string };
export type ColorShadesIndexes = [number, number, number, number, number];
export const MAX_CUSTOM_COLORS_USED_IN_CANVAS = 5;
export const COLORS_PER_ROW = 5;
export const DEFAULT_CHART_COLOR_INDEX = 4;
export const DEFAULT_ELEMENT_STROKE_COLOR_INDEX = 4;
export const DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX = 1;
export const ELEMENTS_PALETTE_SHADE_INDEXES = [0, 2, 4, 6, 8] as const;
export const CANVAS_PALETTE_SHADE_INDEXES = [0, 1, 2, 3, 4] as const;
export const getSpecificColorShades = (
color: Exclude<
ColorPickerColor,
"transparent" | "white" | "black" | "bronze"
>,
indexArr: Readonly<ColorShadesIndexes>,
) => {
return indexArr.map((index) => oc[color][index]) as any as ColorTuple;
};
export const COLOR_PALETTE = {
transparent: "transparent",
black: "#1e1e1e",
white: "#ffffff",
// open-colors
gray: getSpecificColorShades("gray", ELEMENTS_PALETTE_SHADE_INDEXES),
red: getSpecificColorShades("red", ELEMENTS_PALETTE_SHADE_INDEXES),
pink: getSpecificColorShades("pink", ELEMENTS_PALETTE_SHADE_INDEXES),
grape: getSpecificColorShades("grape", ELEMENTS_PALETTE_SHADE_INDEXES),
violet: getSpecificColorShades("violet", ELEMENTS_PALETTE_SHADE_INDEXES),
blue: getSpecificColorShades("blue", ELEMENTS_PALETTE_SHADE_INDEXES),
cyan: getSpecificColorShades("cyan", ELEMENTS_PALETTE_SHADE_INDEXES),
teal: getSpecificColorShades("teal", ELEMENTS_PALETTE_SHADE_INDEXES),
green: getSpecificColorShades("green", ELEMENTS_PALETTE_SHADE_INDEXES),
yellow: getSpecificColorShades("yellow", ELEMENTS_PALETTE_SHADE_INDEXES),
orange: getSpecificColorShades("orange", ELEMENTS_PALETTE_SHADE_INDEXES),
// radix bronze shades 3,5,7,9,11
bronze: ["#f8f1ee", "#eaddd7", "#d2bab0", "#a18072", "#846358"],
} as ColorPalette;
const COMMON_ELEMENT_SHADES = pick(COLOR_PALETTE, [
"cyan",
"blue",
"violet",
"grape",
"pink",
"green",
"teal",
"yellow",
"orange",
"red",
]);
// -----------------------------------------------------------------------------
// quick picks defaults
// -----------------------------------------------------------------------------
// ORDER matters for positioning in quick picker
export const DEFAULT_ELEMENT_STROKE_PICKS = [
COLOR_PALETTE.black,
COLOR_PALETTE.red[DEFAULT_ELEMENT_STROKE_COLOR_INDEX],
COLOR_PALETTE.green[DEFAULT_ELEMENT_STROKE_COLOR_INDEX],
COLOR_PALETTE.blue[DEFAULT_ELEMENT_STROKE_COLOR_INDEX],
COLOR_PALETTE.yellow[DEFAULT_ELEMENT_STROKE_COLOR_INDEX],
] as ColorTuple;
// ORDER matters for positioning in quick picker
export const DEFAULT_ELEMENT_BACKGROUND_PICKS = [
COLOR_PALETTE.transparent,
COLOR_PALETTE.red[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX],
COLOR_PALETTE.green[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX],
COLOR_PALETTE.blue[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX],
COLOR_PALETTE.yellow[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX],
] as ColorTuple;
// ORDER matters for positioning in quick picker
export const DEFAULT_CANVAS_BACKGROUND_PICKS = [
COLOR_PALETTE.white,
// radix slate2
"#f8f9fa",
// radix blue2
"#f5faff",
// radix yellow2
"#fffce8",
// radix bronze2
"#fdf8f6",
] as ColorTuple;
// -----------------------------------------------------------------------------
// palette defaults
// -----------------------------------------------------------------------------
export const DEFAULT_ELEMENT_STROKE_COLOR_PALETTE = {
// 1st row
transparent: COLOR_PALETTE.transparent,
white: COLOR_PALETTE.white,
gray: COLOR_PALETTE.gray,
black: COLOR_PALETTE.black,
bronze: COLOR_PALETTE.bronze,
// rest
...COMMON_ELEMENT_SHADES,
} as const;
// ORDER matters for positioning in pallete (5x3 grid)s
export const DEFAULT_ELEMENT_BACKGROUND_COLOR_PALETTE = {
transparent: COLOR_PALETTE.transparent,
white: COLOR_PALETTE.white,
gray: COLOR_PALETTE.gray,
black: COLOR_PALETTE.black,
bronze: COLOR_PALETTE.bronze,
...COMMON_ELEMENT_SHADES,
} as const;
// -----------------------------------------------------------------------------
// helpers
// -----------------------------------------------------------------------------
// !!!MUST BE WITHOUT GRAY, TRANSPARENT AND BLACK!!!
export const getAllColorsSpecificShade = (index: 0 | 1 | 2 | 3 | 4) =>
[
// 2nd row
COLOR_PALETTE.cyan[index],
COLOR_PALETTE.blue[index],
COLOR_PALETTE.violet[index],
COLOR_PALETTE.grape[index],
COLOR_PALETTE.pink[index],
// 3rd row
COLOR_PALETTE.green[index],
COLOR_PALETTE.teal[index],
COLOR_PALETTE.yellow[index],
COLOR_PALETTE.orange[index],
COLOR_PALETTE.red[index],
] as const;
export const rgbToHex = (r: number, g: number, b: number) =>
`#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`;
// -----------------------------------------------------------------------------
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import type {
ExcalidrawElement,
FontFamilyValues,
} from "@excalidraw/element/types";
import type { AppProps, AppState } from "@excalidraw/excalidraw/types";
import { COLOR_PALETTE } from "./colors";
export const isDarwin = /Mac|iPod|iPhone|iPad/.test(navigator.platform);
export const isWindows = /^Win/.test(navigator.platform);
export const isAndroid = /\b(android)\b/i.test(navigator.userAgent);
export const isFirefox =
typeof window !== "undefined" &&
"netscape" in window &&
navigator.userAgent.indexOf("rv:") > 1 &&
navigator.userAgent.indexOf("Gecko") > 1;
export const isChrome = navigator.userAgent.indexOf("Chrome") !== -1;
export const isSafari =
!isChrome && navigator.userAgent.indexOf("Safari") !== -1;
export const isIOS =
/iPad|iPhone/i.test(navigator.platform) ||
// iPadOS 13+
(navigator.userAgent.includes("Mac") && "ontouchend" in document);
// keeping function so it can be mocked in test
export const isBrave = () =>
(navigator as any).brave?.isBrave?.name === "isBrave";
export const isMobile =
isIOS ||
/android|webos|ipod|blackberry|iemobile|opera mini/i.test(
navigator.userAgent,
) ||
/android|ios|ipod|blackberry|windows phone/i.test(navigator.platform);
export const supportsResizeObserver =
typeof window !== "undefined" && "ResizeObserver" in window;
export const APP_NAME = "Excalidraw";
// distance when creating text before it's considered `autoResize: false`
// we're using higher threshold so that clicks that end up being drags
// don't unintentionally create text elements that are wrapped to a few chars
// (happens a lot with fast clicks with the text tool)
export const TEXT_AUTOWRAP_THRESHOLD = 36; // px
export const DRAGGING_THRESHOLD = 10; // px
export const MINIMUM_ARROW_SIZE = 20; // px
export const LINE_CONFIRM_THRESHOLD = 8; // px
export const ELEMENT_SHIFT_TRANSLATE_AMOUNT = 5;
export const ELEMENT_TRANSLATE_AMOUNT = 1;
export const TEXT_TO_CENTER_SNAP_THRESHOLD = 30;
export const SHIFT_LOCKING_ANGLE = Math.PI / 12;
export const DEFAULT_LASER_COLOR = "red";
export const CURSOR_TYPE = {
TEXT: "text",
CROSSHAIR: "crosshair",
GRABBING: "grabbing",
GRAB: "grab",
POINTER: "pointer",
MOVE: "move",
AUTO: "",
};
export const POINTER_BUTTON = {
MAIN: 0,
WHEEL: 1,
SECONDARY: 2,
TOUCH: -1,
ERASER: 5,
} as const;
export const POINTER_EVENTS = {
enabled: "all",
disabled: "none",
// asserted as any so it can be freely assigned to React Element
// "pointerEnvets" CSS prop
inheritFromUI: "var(--ui-pointerEvents)" as any,
} as const;
export enum EVENT {
COPY = "copy",
PASTE = "paste",
CUT = "cut",
KEYDOWN = "keydown",
KEYUP = "keyup",
MOUSE_MOVE = "mousemove",
RESIZE = "resize",
UNLOAD = "unload",
FOCUS = "focus",
BLUR = "blur",
DRAG_OVER = "dragover",
DROP = "drop",
GESTURE_END = "gestureend",
BEFORE_UNLOAD = "beforeunload",
GESTURE_START = "gesturestart",
GESTURE_CHANGE = "gesturechange",
POINTER_MOVE = "pointermove",
POINTER_DOWN = "pointerdown",
POINTER_UP = "pointerup",
STATE_CHANGE = "statechange",
WHEEL = "wheel",
TOUCH_START = "touchstart",
TOUCH_END = "touchend",
HASHCHANGE = "hashchange",
VISIBILITY_CHANGE = "visibilitychange",
SCROLL = "scroll",
// custom events
EXCALIDRAW_LINK = "excalidraw-link",
MENU_ITEM_SELECT = "menu.itemSelect",
MESSAGE = "message",
FULLSCREENCHANGE = "fullscreenchange",
}
export const YOUTUBE_STATES = {
UNSTARTED: -1,
ENDED: 0,
PLAYING: 1,
PAUSED: 2,
BUFFERING: 3,
CUED: 5,
} as const;
export const ENV = {
TEST: "test",
DEVELOPMENT: "development",
PRODUCTION: "production",
};
export const CLASSES = {
SHAPE_ACTIONS_MENU: "App-menu__left",
ZOOM_ACTIONS: "zoom-actions",
SEARCH_MENU_INPUT_WRAPPER: "layer-ui__search-inputWrapper",
CONVERT_ELEMENT_TYPE_POPUP: "ConvertElementTypePopup",
};
export const CJK_HAND_DRAWN_FALLBACK_FONT = "Xiaolai";
export const WINDOWS_EMOJI_FALLBACK_FONT = "Segoe UI Emoji";
/**
* // TODO: shouldn't be really `const`, likely neither have integers as values, due to value for the custom fonts, which should likely be some hash.
*
* Let's think this through and consider:
* - https://developer.mozilla.org/en-US/docs/Web/CSS/generic-family
* - https://drafts.csswg.org/css-fonts-4/#font-family-prop
* - https://learn.microsoft.com/en-us/typography/opentype/spec/ibmfc
*/
export const FONT_FAMILY = {
Virgil: 1,
Helvetica: 2,
Cascadia: 3,
// leave 4 unused as it was historically used for Assistant (which we don't use anymore) or custom font (Obsidian)
Excalifont: 5,
Nunito: 6,
"Lilita One": 7,
"Comic Shanns": 8,
"Liberation Sans": 9,
Assistant: 10,
};
// Segoe UI Emoji fails to properly fallback for some glyphs: ∞, ∫, ≠
// so we need to have generic font fallback before it
export const SANS_SERIF_GENERIC_FONT = "sans-serif";
export const MONOSPACE_GENERIC_FONT = "monospace";
export const FONT_FAMILY_GENERIC_FALLBACKS = {
[SANS_SERIF_GENERIC_FONT]: 998,
[MONOSPACE_GENERIC_FONT]: 999,
};
export const FONT_FAMILY_FALLBACKS = {
[CJK_HAND_DRAWN_FALLBACK_FONT]: 100,
...FONT_FAMILY_GENERIC_FALLBACKS,
[WINDOWS_EMOJI_FALLBACK_FONT]: 1000,
};
export function getGenericFontFamilyFallback(
fontFamily: number,
): keyof typeof FONT_FAMILY_GENERIC_FALLBACKS {
switch (fontFamily) {
case FONT_FAMILY.Cascadia:
case FONT_FAMILY["Comic Shanns"]:
return MONOSPACE_GENERIC_FONT;
default:
return SANS_SERIF_GENERIC_FONT;
}
}
export const getFontFamilyFallbacks = (
fontFamily: number,
): Array<keyof typeof FONT_FAMILY_FALLBACKS> => {
const genericFallbackFont = getGenericFontFamilyFallback(fontFamily);
switch (fontFamily) {
case FONT_FAMILY.Excalifont:
return [
CJK_HAND_DRAWN_FALLBACK_FONT,
genericFallbackFont,
WINDOWS_EMOJI_FALLBACK_FONT,
];
default:
return [genericFallbackFont, WINDOWS_EMOJI_FALLBACK_FONT];
}
};
export const THEME = {
LIGHT: "light",
DARK: "dark",
} as const;
export const FRAME_STYLE = {
strokeColor: "#bbb" as ExcalidrawElement["strokeColor"],
strokeWidth: 2 as ExcalidrawElement["strokeWidth"],
strokeStyle: "solid" as ExcalidrawElement["strokeStyle"],
fillStyle: "solid" as ExcalidrawElement["fillStyle"],
roughness: 0 as ExcalidrawElement["roughness"],
roundness: null as ExcalidrawElement["roundness"],
backgroundColor: "transparent" as ExcalidrawElement["backgroundColor"],
radius: 8,
nameOffsetY: 3,
nameColorLightTheme: "#999999",
nameColorDarkTheme: "#7a7a7a",
nameFontSize: 14,
nameLineHeight: 1.25,
};
export const MIN_FONT_SIZE = 1;
export const DEFAULT_FONT_SIZE = 20;
export const DEFAULT_FONT_FAMILY: FontFamilyValues = FONT_FAMILY.Excalifont;
export const DEFAULT_TEXT_ALIGN = "left";
export const DEFAULT_VERTICAL_ALIGN = "top";
export const DEFAULT_VERSION = "{version}";
export const DEFAULT_TRANSFORM_HANDLE_SPACING = 2;
export const SIDE_RESIZING_THRESHOLD = 2 * DEFAULT_TRANSFORM_HANDLE_SPACING;
// a small epsilon to make side resizing always take precedence
// (avoids an increase in renders and changes to tests)
export const EPSILON = 0.00001;
export const DEFAULT_COLLISION_THRESHOLD =
2 * SIDE_RESIZING_THRESHOLD - EPSILON;
export const COLOR_WHITE = "#ffffff";
export const COLOR_CHARCOAL_BLACK = "#1e1e1e";
// keep this in sync with CSS
export const COLOR_VOICE_CALL = "#a2f1a6";
export const CANVAS_ONLY_ACTIONS = ["selectAll"];
export const DEFAULT_GRID_SIZE = 20;
export const DEFAULT_GRID_STEP = 5;
export const IMAGE_MIME_TYPES = {
svg: "image/svg+xml",
png: "image/png",
jpg: "image/jpeg",
gif: "image/gif",
webp: "image/webp",
bmp: "image/bmp",
ico: "image/x-icon",
avif: "image/avif",
jfif: "image/jfif",
} as const;
export const MIME_TYPES = {
text: "text/plain",
html: "text/html",
json: "application/json",
// excalidraw data
excalidraw: "application/vnd.excalidraw+json",
excalidrawlib: "application/vnd.excalidrawlib+json",
// image-encoded excalidraw data
"excalidraw.svg": "image/svg+xml",
"excalidraw.png": "image/png",
// binary
binary: "application/octet-stream",
// image
...IMAGE_MIME_TYPES,
} as const;
export const ALLOWED_PASTE_MIME_TYPES = [
MIME_TYPES.text,
MIME_TYPES.html,
...Object.values(IMAGE_MIME_TYPES),
] as const;
export const EXPORT_IMAGE_TYPES = {
png: "png",
svg: "svg",
clipboard: "clipboard",
} as const;
export const EXPORT_DATA_TYPES = {
excalidraw: "excalidraw",
excalidrawClipboard: "excalidraw/clipboard",
excalidrawLibrary: "excalidrawlib",
excalidrawClipboardWithAPI: "excalidraw-api/clipboard",
} as const;
export const getExportSource = () =>
window.EXCALIDRAW_EXPORT_SOURCE || window.location.origin;
// time in milliseconds
export const IMAGE_RENDER_TIMEOUT = 500;
export const TAP_TWICE_TIMEOUT = 300;
export const TOUCH_CTX_MENU_TIMEOUT = 500;
export const TITLE_TIMEOUT = 10000;
export const VERSION_TIMEOUT = 30000;
export const SCROLL_TIMEOUT = 100;
export const ZOOM_STEP = 0.1;
export const MIN_ZOOM = 0.1;
export const MAX_ZOOM = 30;
export const HYPERLINK_TOOLTIP_DELAY = 300;
// Report a user inactive after IDLE_THRESHOLD milliseconds
export const IDLE_THRESHOLD = 60_000;
// Report a user active each ACTIVE_THRESHOLD milliseconds
export const ACTIVE_THRESHOLD = 3_000;
// duplicates --theme-filter, should be removed soon
export const THEME_FILTER = "invert(93%) hue-rotate(180deg)";
export const URL_QUERY_KEYS = {
addLibrary: "addLibrary",
} as const;
export const URL_HASH_KEYS = {
addLibrary: "addLibrary",
} as const;
export const DEFAULT_UI_OPTIONS: AppProps["UIOptions"] = {
canvasActions: {
changeViewBackgroundColor: true,
clearCanvas: true,
export: { saveFileToDisk: true },
loadScene: true,
saveToActiveFile: true,
toggleTheme: null,
saveAsImage: true,
},
tools: {
image: true,
},
};
// breakpoints
// -----------------------------------------------------------------------------
// md screen
export const MQ_MAX_WIDTH_PORTRAIT = 730;
export const MQ_MAX_WIDTH_LANDSCAPE = 1000;
export const MQ_MAX_HEIGHT_LANDSCAPE = 500;
// sidebar
export const MQ_RIGHT_SIDEBAR_MIN_WIDTH = 1229;
// -----------------------------------------------------------------------------
export const MAX_DECIMALS_FOR_SVG_EXPORT = 2;
export const EXPORT_SCALES = [1, 2, 3];
export const DEFAULT_EXPORT_PADDING = 10; // px
export const DEFAULT_MAX_IMAGE_WIDTH_OR_HEIGHT = 1440;
export const MAX_ALLOWED_FILE_BYTES = 4 * 1024 * 1024;
export const SVG_NS = "http://www.w3.org/2000/svg";
export const SVG_DOCUMENT_PREAMBLE = `<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
`;
export const ENCRYPTION_KEY_BITS = 128;
export const VERSIONS = {
excalidraw: 2,
excalidrawLibrary: 2,
} as const;
export const BOUND_TEXT_PADDING = 5;
export const ARROW_LABEL_WIDTH_FRACTION = 0.7;
export const ARROW_LABEL_FONT_SIZE_TO_MIN_WIDTH_RATIO = 11;
export const VERTICAL_ALIGN = {
TOP: "top",
MIDDLE: "middle",
BOTTOM: "bottom",
};
export const TEXT_ALIGN = {
LEFT: "left",
CENTER: "center",
RIGHT: "right",
};
export const ELEMENT_READY_TO_ERASE_OPACITY = 20;
// Radius represented as 25% of element's largest side (width/height).
// Used for LEGACY and PROPORTIONAL_RADIUS algorithms, or when the element is
// below the cutoff size.
export const DEFAULT_PROPORTIONAL_RADIUS = 0.25;
// Fixed radius for the ADAPTIVE_RADIUS algorithm. In pixels.
export const DEFAULT_ADAPTIVE_RADIUS = 32;
// roundness type (algorithm)
export const ROUNDNESS = {
// Used for legacy rounding (rectangles), which currently works the same
// as PROPORTIONAL_RADIUS, but we need to differentiate for UI purposes and
// forwards-compat.
LEGACY: 1,
// Used for linear elements & diamonds
PROPORTIONAL_RADIUS: 2,
// Current default algorithm for rectangles, using fixed pixel radius.
// It's working similarly to a regular border-radius, but attemps to make
// radius visually similar across differnt element sizes, especially
// very large and very small elements.
//
// NOTE right now we don't allow configuration and use a constant radius
// (see DEFAULT_ADAPTIVE_RADIUS constant)
ADAPTIVE_RADIUS: 3,
} as const;
export const ROUGHNESS = {
architect: 0,
artist: 1,
cartoonist: 2,
} as const;
export const STROKE_WIDTH = {
thin: 1,
bold: 2,
extraBold: 4,
} as const;
export const DEFAULT_ELEMENT_PROPS: {
strokeColor: ExcalidrawElement["strokeColor"];
backgroundColor: ExcalidrawElement["backgroundColor"];
fillStyle: ExcalidrawElement["fillStyle"];
strokeWidth: ExcalidrawElement["strokeWidth"];
strokeStyle: ExcalidrawElement["strokeStyle"];
roughness: ExcalidrawElement["roughness"];
opacity: ExcalidrawElement["opacity"];
locked: ExcalidrawElement["locked"];
} = {
strokeColor: COLOR_PALETTE.black,
backgroundColor: COLOR_PALETTE.transparent,
fillStyle: "solid",
strokeWidth: 2,
strokeStyle: "solid",
roughness: ROUGHNESS.artist,
opacity: 100,
locked: false,
};
export const LIBRARY_SIDEBAR_TAB = "library";
export const CANVAS_SEARCH_TAB = "search";
export const DEFAULT_SIDEBAR = {
name: "default",
defaultTab: LIBRARY_SIDEBAR_TAB,
} as const;
export const LIBRARY_DISABLED_TYPES = new Set([
"iframe",
"embeddable",
"image",
] as const);
// use these constants to easily identify reference sites
export const TOOL_TYPE = {
selection: "selection",
lasso: "lasso",
rectangle: "rectangle",
diamond: "diamond",
ellipse: "ellipse",
arrow: "arrow",
line: "line",
freedraw: "freedraw",
text: "text",
image: "image",
eraser: "eraser",
hand: "hand",
frame: "frame",
magicframe: "magicframe",
embeddable: "embeddable",
laser: "laser",
} as const;
export const EDITOR_LS_KEYS = {
OAI_API_KEY: "excalidraw-oai-api-key",
// legacy naming (non)scheme
MERMAID_TO_EXCALIDRAW: "mermaid-to-excalidraw",
PUBLISH_LIBRARY: "publish-library-data",
} as const;
/**
* not translated as this is used only in public, stateless API as default value
* where filename is optional and we can't retrieve name from app state
*/
export const DEFAULT_FILENAME = "Untitled";
export const STATS_PANELS = { generalStats: 1, elementProperties: 2 } as const;
export const MIN_WIDTH_OR_HEIGHT = 1;
export const ARROW_TYPE: { [T in AppState["currentItemArrowType"]]: T } = {
sharp: "sharp",
round: "round",
elbow: "elbow",
};
export const DEFAULT_REDUCED_GLOBAL_ALPHA = 0.3;
export const ELEMENT_LINK_KEY = "element";
/** used in tests */
export const ORIG_ID = Symbol.for("__test__originalId__");
export enum UserIdleState {
ACTIVE = "active",
AWAY = "away",
IDLE = "idle",
}
/**
* distance at which we merge points instead of adding a new merge-point
* when converting a line to a polygon (merge currently means overlaping
* the start and end points)
*/
export const LINE_POLYGON_POINT_MERGE_DISTANCE = 20;
export const DOUBLE_TAP_POSITION_THRESHOLD = 35;
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import type { UnsubscribeCallback } from "@excalidraw/excalidraw/types";
type Subscriber<T extends any[]> = (...payload: T) => void;
export class Emitter<T extends any[] = []> {
public subscribers: Subscriber<T>[] = [];
/**
* Attaches subscriber
*
* @returns unsubscribe function
*/
on(...handlers: Subscriber<T>[] | Subscriber<T>[][]): UnsubscribeCallback {
const _handlers = handlers
.flat()
.filter((item) => typeof item === "function");
this.subscribers.push(..._handlers);
return () => this.off(_handlers);
}
once(...handlers: Subscriber<T>[] | Subscriber<T>[][]): UnsubscribeCallback {
const _handlers = handlers
.flat()
.filter((item) => typeof item === "function");
_handlers.push(() => detach());
const detach = this.on(..._handlers);
return detach;
}
off(...handlers: Subscriber<T>[] | Subscriber<T>[][]) {
const _handlers = handlers.flat();
this.subscribers = this.subscribers.filter(
(handler) => !_handlers.includes(handler),
);
}
trigger(...payload: T) {
for (const handler of this.subscribers) {
handler(...payload);
}
return this;
}
clear() {
this.subscribers = [];
}
}
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import type {
ExcalidrawTextElement,
FontFamilyValues,
} from "@excalidraw/element/types";
import { FONT_FAMILY, FONT_FAMILY_FALLBACKS } from "./constants";
/**
* Encapsulates font metrics with additional font metadata.
* */
export interface FontMetadata {
/** for head & hhea metrics read the woff2 with https://fontdrop.info/ */
metrics: {
/** head.unitsPerEm metric */
unitsPerEm: 1000 | 1024 | 2048;
/** hhea.ascender metric */
ascender: number;
/** hhea.descender metric */
descender: number;
/** harcoded unitless line-height, https://github.com/excalidraw/excalidraw/pull/6360#issuecomment-1477635971 */
lineHeight: number;
};
/** flag to indicate a deprecated font */
deprecated?: true;
/**
* whether this is a font that users can use (= shown in font picker)
*/
private?: true;
/** flag to indiccate a local-only font */
local?: true;
/** flag to indicate a fallback font */
fallback?: true;
}
export const FONT_METADATA: Record<number, FontMetadata> = {
[FONT_FAMILY.Excalifont]: {
metrics: {
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
},
[FONT_FAMILY.Nunito]: {
metrics: {
unitsPerEm: 1000,
ascender: 1011,
descender: -353,
lineHeight: 1.25,
},
},
[FONT_FAMILY["Lilita One"]]: {
metrics: {
unitsPerEm: 1000,
ascender: 923,
descender: -220,
lineHeight: 1.15,
},
},
[FONT_FAMILY["Comic Shanns"]]: {
metrics: {
unitsPerEm: 1000,
ascender: 750,
descender: -250,
lineHeight: 1.25,
},
},
[FONT_FAMILY.Virgil]: {
metrics: {
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
deprecated: true,
},
[FONT_FAMILY.Helvetica]: {
metrics: {
unitsPerEm: 2048,
ascender: 1577,
descender: -471,
lineHeight: 1.15,
},
deprecated: true,
local: true,
},
[FONT_FAMILY.Cascadia]: {
metrics: {
unitsPerEm: 2048,
ascender: 1900,
descender: -480,
lineHeight: 1.2,
},
deprecated: true,
},
[FONT_FAMILY["Liberation Sans"]]: {
metrics: {
unitsPerEm: 2048,
ascender: 1854,
descender: -434,
lineHeight: 1.15,
},
private: true,
},
[FONT_FAMILY.Assistant]: {
metrics: {
unitsPerEm: 2048,
ascender: 1021,
descender: -287,
lineHeight: 1.25,
},
private: true,
},
[FONT_FAMILY_FALLBACKS.Xiaolai]: {
metrics: {
unitsPerEm: 1000,
ascender: 880,
descender: -144,
lineHeight: 1.25,
},
fallback: true,
},
[FONT_FAMILY_FALLBACKS["Segoe UI Emoji"]]: {
metrics: {
// reusing Excalifont metrics
unitsPerEm: 1000,
ascender: 886,
descender: -374,
lineHeight: 1.25,
},
local: true,
fallback: true,
},
};
/** Unicode ranges defined by google fonts */
export const GOOGLE_FONTS_RANGES = {
LATIN:
"U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD",
LATIN_EXT:
"U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF",
CYRILIC_EXT:
"U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F",
CYRILIC: "U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116",
VIETNAMESE:
"U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB",
};
/** local protocol to skip the local font from registering or inlining */
export const LOCAL_FONT_PROTOCOL = "local:";
/**
* Calculates vertical offset for a text with alphabetic baseline.
*/
export const getVerticalOffset = (
fontFamily: ExcalidrawTextElement["fontFamily"],
fontSize: ExcalidrawTextElement["fontSize"],
lineHeightPx: number,
) => {
const { unitsPerEm, ascender, descender } =
FONT_METADATA[fontFamily]?.metrics ||
FONT_METADATA[FONT_FAMILY.Excalifont].metrics;
const fontSizeEm = fontSize / unitsPerEm;
const lineGap =
(lineHeightPx - fontSizeEm * ascender + fontSizeEm * descender) / 2;
const verticalOffset = fontSizeEm * ascender + lineGap;
return verticalOffset;
};
/**
* Gets line height for a selected family.
*/
export const getLineHeight = (fontFamily: FontFamilyValues) => {
const { lineHeight } =
FONT_METADATA[fontFamily]?.metrics ||
FONT_METADATA[FONT_FAMILY.Excalifont].metrics;
return lineHeight as ExcalidrawTextElement["lineHeight"];
};
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export * from "./binary-heap";
export * from "./colors";
export * from "./constants";
export * from "./font-metadata";
export * from "./queue";
export * from "./keys";
export * from "./points";
export * from "./promise-pool";
export * from "./random";
export * from "./url";
export * from "./utils";
export * from "./emitter";
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import { isDarwin } from "./constants";
import type { ValueOf } from "./utility-types";
export const CODES = {
EQUAL: "Equal",
MINUS: "Minus",
NUM_ADD: "NumpadAdd",
NUM_SUBTRACT: "NumpadSubtract",
NUM_ZERO: "Numpad0",
BRACKET_RIGHT: "BracketRight",
BRACKET_LEFT: "BracketLeft",
ONE: "Digit1",
TWO: "Digit2",
THREE: "Digit3",
NINE: "Digit9",
QUOTE: "Quote",
ZERO: "Digit0",
SLASH: "Slash",
C: "KeyC",
D: "KeyD",
H: "KeyH",
V: "KeyV",
Z: "KeyZ",
Y: "KeyY",
R: "KeyR",
S: "KeyS",
} as const;
export const KEYS = {
ARROW_DOWN: "ArrowDown",
ARROW_LEFT: "ArrowLeft",
ARROW_RIGHT: "ArrowRight",
ARROW_UP: "ArrowUp",
PAGE_UP: "PageUp",
PAGE_DOWN: "PageDown",
BACKSPACE: "Backspace",
ALT: "Alt",
CTRL_OR_CMD: isDarwin ? "metaKey" : "ctrlKey",
DELETE: "Delete",
ENTER: "Enter",
ESCAPE: "Escape",
QUESTION_MARK: "?",
SPACE: " ",
TAB: "Tab",
CHEVRON_LEFT: "<",
CHEVRON_RIGHT: ">",
PERIOD: ".",
COMMA: ",",
SUBTRACT: "-",
SLASH: "/",
A: "a",
C: "c",
D: "d",
E: "e",
F: "f",
G: "g",
H: "h",
I: "i",
L: "l",
O: "o",
P: "p",
Q: "q",
R: "r",
S: "s",
T: "t",
V: "v",
X: "x",
Y: "y",
Z: "z",
K: "k",
W: "w",
0: "0",
1: "1",
2: "2",
3: "3",
4: "4",
5: "5",
6: "6",
7: "7",
8: "8",
9: "9",
} as const;
export type Key = keyof typeof KEYS;
// defines key code mapping for matching codes as fallback to respective keys on non-latin keyboard layouts
export const KeyCodeMap = new Map<ValueOf<typeof KEYS>, ValueOf<typeof CODES>>([
[KEYS.Z, CODES.Z],
[KEYS.Y, CODES.Y],
]);
export const isLatinChar = (key: string) => /^[a-z]$/.test(key.toLowerCase());
/**
* Used to match key events for any keyboard layout, especially on Windows and Linux,
* where non-latin character with modified (CMD) is not substituted with latin-based alternative.
*
* Uses `event.key` when it's latin, otherwise fallbacks to `event.code` (if mapping exists).
*
* Example of pressing "z" on different layouts, with the chosen key or code highlighted in []:
*
* Layout | Code | Key | Comment
* --------------------- | ----- | --- | -------
* U.S. | KeyZ | [z] |
* Czech | KeyY | [z] |
* Turkish | KeyN | [z] |
* French | KeyW | [z] |
* Macedonian | [KeyZ] | з | z with cmd; з is Cyrillic equivalent of z
* Russian | [KeyZ] | я | z with cmd
* Serbian | [KeyZ] | ѕ | z with cmd
* Greek | [KeyZ] | ζ | z with cmd; also ζ is Greek equivalent of z
* Hebrew | [KeyZ] | ז | z with cmd; also ז is Hebrew equivalent of z
* Pinyin - Simplified | KeyZ | [z] | due to IME
* Cangije - Traditional | [KeyZ] | 重 | z with cmd
* Japanese | [KeyZ] | つ | z with cmd
* 2-Set Korean | [KeyZ] | ㅋ | z with cmd
*
* More details in https://github.com/excalidraw/excalidraw/pull/5944
*/
export const matchKey = (
event: KeyboardEvent | React.KeyboardEvent<Element>,
key: ValueOf<typeof KEYS>,
): boolean => {
// for latin layouts use key
if (key === event.key.toLowerCase()) {
return true;
}
// non-latin layouts fallback to code
const code = KeyCodeMap.get(key);
return Boolean(code && !isLatinChar(event.key) && event.code === code);
};
export const isArrowKey = (key: string) =>
key === KEYS.ARROW_LEFT ||
key === KEYS.ARROW_RIGHT ||
key === KEYS.ARROW_DOWN ||
key === KEYS.ARROW_UP;
export const shouldResizeFromCenter = (event: MouseEvent | KeyboardEvent) =>
event.altKey;
export const shouldMaintainAspectRatio = (event: MouseEvent | KeyboardEvent) =>
event.shiftKey;
export const shouldRotateWithDiscreteAngle = (
event: MouseEvent | KeyboardEvent | React.PointerEvent<HTMLCanvasElement>,
) => event.shiftKey;
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import {
pointFromPair,
type GlobalPoint,
type LocalPoint,
} from "@excalidraw/math";
import type { NullableGridSize } from "@excalidraw/excalidraw/types";
export const getSizeFromPoints = (
points: readonly (GlobalPoint | LocalPoint)[],
) => {
const xs = points.map((point) => point[0]);
const ys = points.map((point) => point[1]);
return {
width: Math.max(...xs) - Math.min(...xs),
height: Math.max(...ys) - Math.min(...ys),
};
};
/** @arg dimension, 0 for rescaling only x, 1 for y */
export const rescalePoints = <Point extends GlobalPoint | LocalPoint>(
dimension: 0 | 1,
newSize: number,
points: readonly Point[],
normalize: boolean,
): Point[] => {
const coordinates = points.map((point) => point[dimension]);
const maxCoordinate = Math.max(...coordinates);
const minCoordinate = Math.min(...coordinates);
const size = maxCoordinate - minCoordinate;
const scale = size === 0 ? 1 : newSize / size;
let nextMinCoordinate = Infinity;
const scaledPoints = points.map((point): Point => {
const newCoordinate = point[dimension] * scale;
const newPoint = [...point];
newPoint[dimension] = newCoordinate;
if (newCoordinate < nextMinCoordinate) {
nextMinCoordinate = newCoordinate;
}
return newPoint as Point;
});
if (!normalize) {
return scaledPoints;
}
if (scaledPoints.length === 2) {
// we don't translate two-point lines
return scaledPoints;
}
const translation = minCoordinate - nextMinCoordinate;
const nextPoints = scaledPoints.map((scaledPoint) =>
pointFromPair<Point>(
scaledPoint.map((value, currentDimension) => {
return currentDimension === dimension ? value + translation : value;
}) as [number, number],
),
);
return nextPoints;
};
// TODO: Rounding this point causes some shake when free drawing
export const getGridPoint = (
x: number,
y: number,
gridSize: NullableGridSize,
): [number, number] => {
if (gridSize) {
return [
Math.round(x / gridSize) * gridSize,
Math.round(y / gridSize) * gridSize,
];
}
return [x, y];
};
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import Pool from "es6-promise-pool";
// extending the missing types
// relying on the [Index, T] to keep a correct order
type TPromisePool<T, Index = number> = Pool<[Index, T][]> & {
addEventListener: (
type: "fulfilled",
listener: (event: { data: { result: [Index, T] } }) => void,
) => (event: { data: { result: [Index, T] } }) => void;
removeEventListener: (
type: "fulfilled",
listener: (event: { data: { result: [Index, T] } }) => void,
) => void;
};
export class PromisePool<T> {
private readonly pool: TPromisePool<T>;
private readonly entries: Record<number, T> = {};
constructor(
source: IterableIterator<Promise<void | readonly [number, T]>>,
concurrency: number,
) {
this.pool = new Pool(
source as unknown as () => void | PromiseLike<[number, T][]>,
concurrency,
) as TPromisePool<T>;
}
public all() {
const listener = (event: { data: { result: void | [number, T] } }) => {
if (event.data.result) {
// by default pool does not return the results, so we are gathering them manually
// with the correct call order (represented by the index in the tuple)
const [index, value] = event.data.result;
this.entries[index] = value;
}
};
this.pool.addEventListener("fulfilled", listener);
return this.pool.start().then(() => {
setTimeout(() => {
this.pool.removeEventListener("fulfilled", listener);
});
return Object.values(this.entries);
});
}
}
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import { promiseTry, resolvablePromise } from ".";
import type { ResolvablePromise } from ".";
import type { MaybePromise } from "./utility-types";
type Job<T, TArgs extends unknown[]> = (...args: TArgs) => MaybePromise<T>;
type QueueJob<T, TArgs extends unknown[]> = {
jobFactory: Job<T, TArgs>;
promise: ResolvablePromise<T>;
args: TArgs;
};
export class Queue {
private jobs: QueueJob<any, any[]>[] = [];
private running = false;
private tick() {
if (this.running) {
return;
}
const job = this.jobs.shift();
if (job) {
this.running = true;
job.promise.resolve(
promiseTry(job.jobFactory, ...job.args).finally(() => {
this.running = false;
this.tick();
}),
);
} else {
this.running = false;
}
}
push<TValue, TArgs extends unknown[]>(
jobFactory: Job<TValue, TArgs>,
...args: TArgs
): Promise<TValue> {
const promise = resolvablePromise<TValue>();
this.jobs.push({ jobFactory, promise, args });
this.tick();
return promise;
}
}
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import { nanoid } from "nanoid";
import { Random } from "roughjs/bin/math";
import { isTestEnv } from "./utils";
let random = new Random(Date.now());
let testIdBase = 0;
export const randomInteger = () => Math.floor(random.next() * 2 ** 31);
export const reseed = (seed: number) => {
random = new Random(seed);
testIdBase = 0;
};
export const randomId = () => (isTestEnv() ? `id${testIdBase++}` : nanoid());
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import { sanitizeUrl } from "@braintree/sanitize-url";
import { escapeDoubleQuotes } from "./utils";
export const normalizeLink = (link: string) => {
link = link.trim();
if (!link) {
return link;
}
return sanitizeUrl(escapeDoubleQuotes(link));
};
export const isLocalLink = (link: string | null) => {
return !!(link?.includes(location.origin) || link?.startsWith("/"));
};
/**
* Returns URL sanitized and safe for usage in places such as
* iframe's src attribute or <a> href attributes.
*/
export const toValidURL = (link: string) => {
link = normalizeLink(link);
// make relative links into fully-qualified urls
if (link.startsWith("/")) {
return `${location.origin}${link}`;
}
try {
new URL(link);
} catch {
// if link does not parse as URL, assume invalid and return blank page
return "about:blank";
}
return link;
};
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export type Mutable<T> = {
-readonly [P in keyof T]: T[P];
};
export type ValueOf<T> = T[keyof T];
export type Merge<M, N> = Omit<M, keyof N> & N;
/** utility type to assert that the second type is a subtype of the first type.
* Returns the subtype. */
export type SubtypeOf<Supertype, Subtype extends Supertype> = Subtype;
export type ResolutionType<T extends (...args: any) => any> = T extends (
...args: any
) => Promise<infer R>
? R
: any;
// https://github.com/krzkaczor/ts-essentials
export type MarkOptional<T, K extends keyof T> = Omit<T, K> &
Partial<Pick<T, K>>;
export type MarkRequired<T, RK extends keyof T> = Exclude<T, RK> &
Required<Pick<T, RK>>;
export type MarkNonNullable<T, K extends keyof T> = {
[P in K]-?: P extends K ? NonNullable<T[P]> : T[P];
} & { [P in keyof T]: T[P] };
export type NonOptional<T> = Exclude<T, undefined>;
// -----------------------------------------------------------------------------
// type getter for interface's callable type
// src: https://stackoverflow.com/a/58658851/927631
// -----------------------------------------------------------------------------
export type SignatureType<T> = T extends (...args: infer R) => any ? R : never;
export type CallableType<T extends (...args: any[]) => any> = (
...args: SignatureType<T>
) => ReturnType<T>;
// --------------------------------------------------------------------------—
// Type for React.forwardRef --- supply only the first generic argument T
export type ForwardRef<T, P = any> = Parameters<
CallableType<React.ForwardRefRenderFunction<T, P>>
>[1];
export type ExtractSetType<T extends Set<any>> = T extends Set<infer U>
? U
: never;
export type SameType<T, U> = T extends U ? (U extends T ? true : false) : false;
export type Assert<T extends true> = T;
export type NestedKeyOf<T, K = keyof T> = K extends keyof T & (string | number)
? `${K}` | (T[K] extends object ? `${K}.${NestedKeyOf<T[K]>}` : never)
: never;
export type SetLike<T> = Set<T> | T[];
export type ReadonlySetLike<T> = ReadonlySet<T> | readonly T[];
export type MakeBrand<T extends string> = {
/** @private using ~ to sort last in intellisense */
[K in `~brand~${T}`]: T;
};
/** Maybe just promise or already fulfilled one! */
export type MaybePromise<T> = T | Promise<T>;
// get union of all keys from the union of types
export type AllPossibleKeys<T> = T extends any ? keyof T : never;
/** Strip all the methods or functions from a type */
export type DTO<T> = {
[K in keyof T as T[K] extends Function ? never : K]: T[K];
};
export type MapEntry<M extends Map<any, any>> = M extends Map<infer K, infer V>
? [K, V]
: never;
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import {
isTransparent,
mapFind,
reduceToCommonValue,
} from "@excalidraw/common";
describe("@excalidraw/common/utils", () => {
describe("isTransparent()", () => {
it("should return true when color is rgb transparent", () => {
expect(isTransparent("#ff00")).toEqual(true);
expect(isTransparent("#fff00000")).toEqual(true);
expect(isTransparent("transparent")).toEqual(true);
});
it("should return false when color is not transparent", () => {
expect(isTransparent("#ced4da")).toEqual(false);
});
});
describe("reduceToCommonValue()", () => {
it("should return the common value when all values are the same", () => {
expect(reduceToCommonValue([1, 1])).toEqual(1);
expect(reduceToCommonValue([0, 0])).toEqual(0);
expect(reduceToCommonValue(["a", "a"])).toEqual("a");
expect(reduceToCommonValue(new Set([1]))).toEqual(1);
expect(reduceToCommonValue([""])).toEqual("");
expect(reduceToCommonValue([0])).toEqual(0);
const o = {};
expect(reduceToCommonValue([o, o])).toEqual(o);
expect(
reduceToCommonValue([{ a: 1 }, { a: 1, b: 2 }], (o) => o.a),
).toEqual(1);
expect(
reduceToCommonValue(new Set([{ a: 1 }, { a: 1, b: 2 }]), (o) => o.a),
).toEqual(1);
});
it("should return `null` when values are different", () => {
expect(reduceToCommonValue([1, 2, 3])).toEqual(null);
expect(reduceToCommonValue(new Set([1, 2]))).toEqual(null);
expect(reduceToCommonValue([{ a: 1 }, { a: 2 }], (o) => o.a)).toEqual(
null,
);
});
it("should return `null` when some values are nullable", () => {
expect(reduceToCommonValue([1, null, 1])).toEqual(null);
expect(reduceToCommonValue([null, 1])).toEqual(null);
expect(reduceToCommonValue([1, undefined])).toEqual(null);
expect(reduceToCommonValue([undefined, 1])).toEqual(null);
expect(reduceToCommonValue([null])).toEqual(null);
expect(reduceToCommonValue([undefined])).toEqual(null);
expect(reduceToCommonValue([])).toEqual(null);
});
});
describe("mapFind()", () => {
it("should return the first mapped non-null element", () => {
{
let counter = 0;
const result = mapFind(["a", "b", "c"], (value) => {
counter++;
return value === "b" ? 42 : null;
});
expect(result).toEqual(42);
expect(counter).toBe(2);
}
expect(mapFind([1, 2], (value) => value * 0)).toBe(0);
expect(mapFind([1, 2], () => false)).toBe(false);
expect(mapFind([1, 2], () => "")).toBe("");
});
it("should return undefined if no mapped element is found", () => {
expect(mapFind([1, 2], () => undefined)).toBe(undefined);
expect(mapFind([1, 2], () => null)).toBe(undefined);
});
});
});
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import { KEYS, matchKey } from "../src/keys";
describe("key matcher", async () => {
it("should not match unexpected key", async () => {
expect(
matchKey(new KeyboardEvent("keydown", { key: "N" }), KEYS.Y),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "Unidentified" }), KEYS.Z),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "z" }), KEYS.Y),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "y" }), KEYS.Z),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "Z" }), KEYS.Y),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "Y" }), KEYS.Z),
).toBeFalsy();
});
it("should match key (case insensitive) when key is latin", async () => {
expect(
matchKey(new KeyboardEvent("keydown", { key: "z" }), KEYS.Z),
).toBeTruthy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "y" }), KEYS.Y),
).toBeTruthy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "Z" }), KEYS.Z),
).toBeTruthy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "Y" }), KEYS.Y),
).toBeTruthy();
});
it("should match key on QWERTY, QWERTZ, AZERTY", async () => {
// QWERTY
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "y", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// QWERTZ
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyY" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "y", code: "KeyZ" }),
KEYS.Y,
),
).toBeTruthy();
// AZERTY
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyW" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "y", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
});
it("should match key on DVORAK, COLEMAK", async () => {
// DVORAK
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeySemicolon" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "y", code: "KeyF" }),
KEYS.Y,
),
).toBeTruthy();
// COLEMAK
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "y", code: "KeyJ" }),
KEYS.Y,
),
).toBeTruthy();
});
it("should match key on Turkish-Q", async () => {
// Turkish-Q
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyN" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "Y", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
});
it("should not fallback when code is not defined", async () => {
expect(
matchKey(new KeyboardEvent("keydown", { key: "я" }), KEYS.Z),
).toBeFalsy();
expect(
matchKey(new KeyboardEvent("keydown", { key: "卜" }), KEYS.Y),
).toBeFalsy();
});
it("should not fallback when code is incorrect", async () => {
expect(
matchKey(
new KeyboardEvent("keydown", { key: "z", code: "KeyY" }),
KEYS.Y,
),
).toBeFalsy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "Y", code: "KeyZ" }),
KEYS.Z,
),
).toBeFalsy();
});
it("should fallback to code when key is non-latin", async () => {
// Macedonian
expect(
matchKey(
new KeyboardEvent("keydown", { key: "з", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ѕ", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Russian
expect(
matchKey(
new KeyboardEvent("keydown", { key: "я", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "н", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Serbian
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ѕ", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "з", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Greek
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ζ", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "υ", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Hebrew
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ז", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ט", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Cangjie - Traditional
expect(
matchKey(
new KeyboardEvent("keydown", { key: "重", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "卜", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// Japanese
expect(
matchKey(
new KeyboardEvent("keydown", { key: "つ", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ん", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
// 2-Set Korean
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ㅋ", code: "KeyZ" }),
KEYS.Z,
),
).toBeTruthy();
expect(
matchKey(
new KeyboardEvent("keydown", { key: "ㅛ", code: "KeyY" }),
KEYS.Y,
),
).toBeTruthy();
});
});
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import { Queue } from "../src/queue";
describe("Queue", () => {
const calls: any[] = [];
const createJobFactory =
<T>(
// for purpose of this test, Error object will become a rejection value
resolutionOrRejectionValue: T,
ms = 1,
) =>
() => {
return new Promise<T>((resolve, reject) => {
setTimeout(() => {
if (resolutionOrRejectionValue instanceof Error) {
reject(resolutionOrRejectionValue);
} else {
resolve(resolutionOrRejectionValue);
}
}, ms);
}).then((x) => {
calls.push(x);
return x;
});
};
beforeEach(() => {
calls.length = 0;
});
it("should await and resolve values in order of enqueueing", async () => {
const queue = new Queue();
const p1 = queue.push(createJobFactory("A", 50));
const p2 = queue.push(createJobFactory("B"));
const p3 = queue.push(createJobFactory("C"));
expect(await p3).toBe("C");
expect(await p2).toBe("B");
expect(await p1).toBe("A");
expect(calls).toEqual(["A", "B", "C"]);
});
it("should reject a job if it throws, and not affect other jobs", async () => {
const queue = new Queue();
const err = new Error("B");
queue.push(createJobFactory("A", 50));
const p2 = queue.push(createJobFactory(err));
const p3 = queue.push(createJobFactory("C"));
const p2err = p2.catch((err) => err);
await p3;
expect(await p2err).toBe(err);
expect(calls).toEqual(["A", "C"]);
});
});
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import { normalizeLink } from "../src/url";
describe("normalizeLink", () => {
// NOTE not an extensive XSS test suite, just to check if we're not
// regressing in sanitization
it("should sanitize links", () => {
expect(
// eslint-disable-next-line no-script-url
normalizeLink(`javascript://%0aalert(document.domain)`).startsWith(
// eslint-disable-next-line no-script-url
`javascript:`,
),
).toBe(false);
expect(normalizeLink("ola")).toBe("ola");
expect(normalizeLink(" ola")).toBe("ola");
expect(normalizeLink("https://www.excalidraw.com")).toBe(
"https://www.excalidraw.com",
);
expect(normalizeLink("www.excalidraw.com")).toBe("www.excalidraw.com");
expect(normalizeLink("/ola")).toBe("/ola");
expect(normalizeLink("http://test")).toBe("http://test");
expect(normalizeLink("ftp://test")).toBe("ftp://test");
expect(normalizeLink("file://")).toBe("file://");
expect(normalizeLink("file://")).toBe("file://");
expect(normalizeLink("[test](https://test)")).toBe("[test](https://test)");
expect(normalizeLink("[[test]]")).toBe("[[test]]");
expect(normalizeLink("<test>")).toBe("<test>");
expect(normalizeLink("test&")).toBe("test&");
});
});
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{
"extends": "../tsconfig.base.json",
"compilerOptions": {
"outDir": "./dist/types"
},
"include": ["src/**/*", "global.d.ts"],
"exclude": ["**/*.test.*", "tests", "types", "examples", "dist"]
}
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{
"extends": ["../eslintrc.base.json"]
}
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# @excalidraw/element
## Install
```bash
npm install @excalidraw/element
```
If you prefer Yarn over npm, use this command to install the Excalidraw utils package:
```bash
yarn add @excalidraw/element
```
With PNPM, similarly install the package with this command:
```bash
pnpm add @excalidraw/element
```
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/// <reference types="vite/client" />
import "@excalidraw/excalidraw/global";
import "@excalidraw/excalidraw/css";
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{
"name": "@excalidraw/element",
"version": "0.18.0",
"type": "module",
"types": "./dist/types/element/src/index.d.ts",
"main": "./dist/prod/index.js",
"module": "./dist/prod/index.js",
"exports": {
".": {
"types": "./dist/types/element/src/index.d.ts",
"development": "./dist/dev/index.js",
"production": "./dist/prod/index.js",
"default": "./dist/prod/index.js"
},
"./*": {
"types": "./dist/types/element/src/*.d.ts",
"development": "./dist/dev/index.js",
"production": "./dist/prod/index.js",
"default": "./dist/prod/index.js"
}
},
"files": [
"dist/*"
],
"description": "Excalidraw elements-related logic",
"publishConfig": {
"access": "public"
},
"license": "MIT",
"keywords": [
"excalidraw",
"excalidraw-utils"
],
"browserslist": {
"production": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all",
"not safari < 12",
"not kaios <= 2.5",
"not edge < 79",
"not chrome < 70",
"not and_uc < 13",
"not samsung < 10"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"bugs": "https://github.com/excalidraw/excalidraw/issues",
"repository": "https://github.com/excalidraw/excalidraw",
"scripts": {
"gen:types": "rimraf types && tsc",
"build:esm": "rimraf dist && node ../../scripts/buildBase.js && yarn gen:types"
},
"dependencies": {
"@excalidraw/common": "0.18.0",
"@excalidraw/math": "0.18.0"
}
}
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import throttle from "lodash.throttle";
import {
randomInteger,
arrayToMap,
toBrandedType,
isDevEnv,
isTestEnv,
toArray,
} from "@excalidraw/common";
import { isNonDeletedElement } from "@excalidraw/element";
import { isFrameLikeElement } from "@excalidraw/element";
import { getElementsInGroup } from "@excalidraw/element";
import {
syncInvalidIndices,
syncMovedIndices,
validateFractionalIndices,
} from "@excalidraw/element";
import { getSelectedElements } from "@excalidraw/element";
import { mutateElement, type ElementUpdate } from "@excalidraw/element";
import type {
ExcalidrawElement,
NonDeletedExcalidrawElement,
NonDeleted,
ExcalidrawFrameLikeElement,
ElementsMapOrArray,
SceneElementsMap,
NonDeletedSceneElementsMap,
OrderedExcalidrawElement,
Ordered,
} from "@excalidraw/element/types";
import type {
Assert,
Mutable,
SameType,
} from "@excalidraw/common/utility-types";
import type { AppState } from "../../excalidraw/types";
type SceneStateCallback = () => void;
type SceneStateCallbackRemover = () => void;
type SelectionHash = string & { __brand: "selectionHash" };
const getNonDeletedElements = <T extends ExcalidrawElement>(
allElements: readonly T[],
) => {
const elementsMap = new Map() as NonDeletedSceneElementsMap;
const elements: T[] = [];
for (const element of allElements) {
if (!element.isDeleted) {
elements.push(element as NonDeleted<T>);
elementsMap.set(
element.id,
element as Ordered<NonDeletedExcalidrawElement>,
);
}
}
return { elementsMap, elements };
};
const validateIndicesThrottled = throttle(
(elements: readonly ExcalidrawElement[]) => {
if (isDevEnv() || isTestEnv() || window?.DEBUG_FRACTIONAL_INDICES) {
validateFractionalIndices(elements, {
// throw only in dev & test, to remain functional on `DEBUG_FRACTIONAL_INDICES`
shouldThrow: isDevEnv() || isTestEnv(),
includeBoundTextValidation: true,
});
}
},
1000 * 60,
{ leading: true, trailing: false },
);
const hashSelectionOpts = (
opts: Parameters<InstanceType<typeof Scene>["getSelectedElements"]>[0],
) => {
const keys = ["includeBoundTextElement", "includeElementsInFrames"] as const;
type HashableKeys = Omit<typeof opts, "selectedElementIds" | "elements">;
// just to ensure we're hashing all expected keys
// eslint-disable-next-line @typescript-eslint/no-unused-vars
type _ = Assert<
SameType<
Required<HashableKeys>,
Pick<Required<HashableKeys>, typeof keys[number]>
>
>;
let hash = "";
for (const key of keys) {
hash += `${key}:${opts[key] ? "1" : "0"}`;
}
return hash as SelectionHash;
};
// ideally this would be a branded type but it'd be insanely hard to work with
// in our codebase
export type ExcalidrawElementsIncludingDeleted = readonly ExcalidrawElement[];
export class Scene {
// ---------------------------------------------------------------------------
// instance methods/props
// ---------------------------------------------------------------------------
private callbacks: Set<SceneStateCallback> = new Set();
private nonDeletedElements: readonly Ordered<NonDeletedExcalidrawElement>[] =
[];
private nonDeletedElementsMap = toBrandedType<NonDeletedSceneElementsMap>(
new Map(),
);
// ideally all elements within the scene should be wrapped around with `Ordered` type, but right now there is no real benefit doing so
private elements: readonly OrderedExcalidrawElement[] = [];
private nonDeletedFramesLikes: readonly NonDeleted<ExcalidrawFrameLikeElement>[] =
[];
private frames: readonly ExcalidrawFrameLikeElement[] = [];
private elementsMap = toBrandedType<SceneElementsMap>(new Map());
private selectedElementsCache: {
selectedElementIds: AppState["selectedElementIds"] | null;
elements: readonly NonDeletedExcalidrawElement[] | null;
cache: Map<SelectionHash, NonDeletedExcalidrawElement[]>;
} = {
selectedElementIds: null,
elements: null,
cache: new Map(),
};
/**
* Random integer regenerated each scene update.
*
* Does not relate to elements versions, it's only a renderer
* cache-invalidation nonce at the moment.
*/
private sceneNonce: number | undefined;
getSceneNonce() {
return this.sceneNonce;
}
getNonDeletedElementsMap() {
return this.nonDeletedElementsMap;
}
getElementsIncludingDeleted() {
return this.elements;
}
getElementsMapIncludingDeleted() {
return this.elementsMap;
}
getNonDeletedElements() {
return this.nonDeletedElements;
}
getFramesIncludingDeleted() {
return this.frames;
}
constructor(
elements: ElementsMapOrArray | null = null,
options?: {
skipValidation?: true;
},
) {
if (elements) {
this.replaceAllElements(elements, options);
}
}
getSelectedElements(opts: {
// NOTE can be ommitted by making Scene constructor require App instance
selectedElementIds: AppState["selectedElementIds"];
/**
* for specific cases where you need to use elements not from current
* scene state. This in effect will likely result in cache-miss, and
* the cache won't be updated in this case.
*/
elements?: ElementsMapOrArray;
// selection-related options
includeBoundTextElement?: boolean;
includeElementsInFrames?: boolean;
}): NonDeleted<ExcalidrawElement>[] {
const hash = hashSelectionOpts(opts);
const elements = opts?.elements || this.nonDeletedElements;
if (
this.selectedElementsCache.elements === elements &&
this.selectedElementsCache.selectedElementIds === opts.selectedElementIds
) {
const cached = this.selectedElementsCache.cache.get(hash);
if (cached) {
return cached;
}
} else if (opts?.elements == null) {
// if we're operating on latest scene elements and the cache is not
// storing the latest elements, clear the cache
this.selectedElementsCache.cache.clear();
}
const selectedElements = getSelectedElements(
elements,
{ selectedElementIds: opts.selectedElementIds },
opts,
);
// cache only if we're not using custom elements
if (opts?.elements == null) {
this.selectedElementsCache.selectedElementIds = opts.selectedElementIds;
this.selectedElementsCache.elements = this.nonDeletedElements;
this.selectedElementsCache.cache.set(hash, selectedElements);
}
return selectedElements;
}
getNonDeletedFramesLikes(): readonly NonDeleted<ExcalidrawFrameLikeElement>[] {
return this.nonDeletedFramesLikes;
}
getElement<T extends ExcalidrawElement>(id: T["id"]): T | null {
return (this.elementsMap.get(id) as T | undefined) || null;
}
getNonDeletedElement(
id: ExcalidrawElement["id"],
): NonDeleted<ExcalidrawElement> | null {
const element = this.getElement(id);
if (element && isNonDeletedElement(element)) {
return element;
}
return null;
}
/**
* A utility method to help with updating all scene elements, with the added
* performance optimization of not renewing the array if no change is made.
*
* Maps all current excalidraw elements, invoking the callback for each
* element. The callback should either return a new mapped element, or the
* original element if no changes are made. If no changes are made to any
* element, this results in a no-op. Otherwise, the newly mapped elements
* are set as the next scene's elements.
*
* @returns whether a change was made
*/
mapElements(
iteratee: (element: ExcalidrawElement) => ExcalidrawElement,
): boolean {
let didChange = false;
const newElements = this.elements.map((element) => {
const nextElement = iteratee(element);
if (nextElement !== element) {
didChange = true;
}
return nextElement;
});
if (didChange) {
this.replaceAllElements(newElements);
}
return didChange;
}
replaceAllElements(
nextElements: ElementsMapOrArray,
options?: {
skipValidation?: true;
},
) {
// we do trust the insertion order on the map, though maybe we shouldn't and should prefer order defined by fractional indices
const _nextElements = toArray(nextElements);
const nextFrameLikes: ExcalidrawFrameLikeElement[] = [];
if (!options?.skipValidation) {
validateIndicesThrottled(_nextElements);
}
this.elements = syncInvalidIndices(_nextElements);
this.elementsMap.clear();
this.elements.forEach((element) => {
if (isFrameLikeElement(element)) {
nextFrameLikes.push(element);
}
this.elementsMap.set(element.id, element);
});
const nonDeletedElements = getNonDeletedElements(this.elements);
this.nonDeletedElements = nonDeletedElements.elements;
this.nonDeletedElementsMap = nonDeletedElements.elementsMap;
this.frames = nextFrameLikes;
this.nonDeletedFramesLikes = getNonDeletedElements(this.frames).elements;
this.triggerUpdate();
}
triggerUpdate() {
this.sceneNonce = randomInteger();
for (const callback of Array.from(this.callbacks)) {
callback();
}
}
onUpdate(cb: SceneStateCallback): SceneStateCallbackRemover {
if (this.callbacks.has(cb)) {
throw new Error();
}
this.callbacks.add(cb);
return () => {
if (!this.callbacks.has(cb)) {
throw new Error();
}
this.callbacks.delete(cb);
};
}
destroy() {
this.elements = [];
this.nonDeletedElements = [];
this.nonDeletedFramesLikes = [];
this.frames = [];
this.elementsMap.clear();
this.selectedElementsCache.selectedElementIds = null;
this.selectedElementsCache.elements = null;
this.selectedElementsCache.cache.clear();
// done not for memory leaks, but to guard against possible late fires
// (I guess?)
this.callbacks.clear();
}
insertElementAtIndex(element: ExcalidrawElement, index: number) {
if (!Number.isFinite(index) || index < 0) {
throw new Error(
"insertElementAtIndex can only be called with index >= 0",
);
}
const nextElements = [
...this.elements.slice(0, index),
element,
...this.elements.slice(index),
];
syncMovedIndices(nextElements, arrayToMap([element]));
this.replaceAllElements(nextElements);
}
insertElementsAtIndex(elements: ExcalidrawElement[], index: number) {
if (!elements.length) {
return;
}
if (!Number.isFinite(index) || index < 0) {
throw new Error(
"insertElementAtIndex can only be called with index >= 0",
);
}
const nextElements = [
...this.elements.slice(0, index),
...elements,
...this.elements.slice(index),
];
syncMovedIndices(nextElements, arrayToMap(elements));
this.replaceAllElements(nextElements);
}
insertElement = (element: ExcalidrawElement) => {
const index = element.frameId
? this.getElementIndex(element.frameId)
: this.elements.length;
this.insertElementAtIndex(element, index);
};
insertElements = (elements: ExcalidrawElement[]) => {
if (!elements.length) {
return;
}
const index = elements[0]?.frameId
? this.getElementIndex(elements[0].frameId)
: this.elements.length;
this.insertElementsAtIndex(elements, index);
};
getElementIndex(elementId: string) {
return this.elements.findIndex((element) => element.id === elementId);
}
getContainerElement = (
element:
| (ExcalidrawElement & {
containerId: ExcalidrawElement["id"] | null;
})
| null,
) => {
if (!element) {
return null;
}
if (element.containerId) {
return this.getElement(element.containerId) || null;
}
return null;
};
getElementsFromId = (id: string): ExcalidrawElement[] => {
const elementsMap = this.getNonDeletedElementsMap();
// first check if the id is an element
const el = elementsMap.get(id);
if (el) {
return [el];
}
// then, check if the id is a group
return getElementsInGroup(elementsMap, id);
};
// Mutate an element with passed updates and trigger the component to update. Make sure you
// are calling it either from a React event handler or within unstable_batchedUpdates().
mutateElement<TElement extends Mutable<ExcalidrawElement>>(
element: TElement,
updates: ElementUpdate<TElement>,
options: {
informMutation: boolean;
isDragging: boolean;
} = {
informMutation: true,
isDragging: false,
},
) {
const elementsMap = this.getNonDeletedElementsMap();
const { version: prevVersion } = element;
const { version: nextVersion } = mutateElement(
element,
elementsMap,
updates,
options,
);
if (
// skip if the element is not in the scene (i.e. selection)
this.elementsMap.has(element.id) &&
// skip if the element's version hasn't changed, as mutateElement returned the same element
prevVersion !== nextVersion &&
options.informMutation
) {
this.triggerUpdate();
}
return element;
}
}
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import type { AppState } from "@excalidraw/excalidraw/types";
import { updateBoundElements } from "./binding";
import { getCommonBoundingBox } from "./bounds";
import { getSelectedElementsByGroup } from "./groups";
import type { Scene } from "./Scene";
import type { BoundingBox } from "./bounds";
import type { ExcalidrawElement } from "./types";
export interface Alignment {
position: "start" | "center" | "end";
axis: "x" | "y";
}
export const alignElements = (
selectedElements: ExcalidrawElement[],
alignment: Alignment,
scene: Scene,
appState: Readonly<AppState>,
): ExcalidrawElement[] => {
const groups: ExcalidrawElement[][] = getSelectedElementsByGroup(
selectedElements,
scene.getNonDeletedElementsMap(),
appState,
);
const selectionBoundingBox = getCommonBoundingBox(selectedElements);
return groups.flatMap((group) => {
const translation = calculateTranslation(
group,
selectionBoundingBox,
alignment,
);
return group.map((element) => {
// update element
const updatedEle = scene.mutateElement(element, {
x: element.x + translation.x,
y: element.y + translation.y,
});
// update bound elements
updateBoundElements(element, scene, {
simultaneouslyUpdated: group,
});
return updatedEle;
});
});
};
const calculateTranslation = (
group: ExcalidrawElement[],
selectionBoundingBox: BoundingBox,
{ axis, position }: Alignment,
): { x: number; y: number } => {
const groupBoundingBox = getCommonBoundingBox(group);
const [min, max]: ["minX" | "minY", "maxX" | "maxY"] =
axis === "x" ? ["minX", "maxX"] : ["minY", "maxY"];
const noTranslation = { x: 0, y: 0 };
if (position === "start") {
return {
...noTranslation,
[axis]: selectionBoundingBox[min] - groupBoundingBox[min],
};
} else if (position === "end") {
return {
...noTranslation,
[axis]: selectionBoundingBox[max] - groupBoundingBox[max],
};
} // else if (position === "center") {
return {
...noTranslation,
[axis]:
(selectionBoundingBox[min] + selectionBoundingBox[max]) / 2 -
(groupBoundingBox[min] + groupBoundingBox[max]) / 2,
};
};
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import { isTransparent } from "@excalidraw/common";
import {
curveIntersectLineSegment,
isPointWithinBounds,
lineSegment,
lineSegmentIntersectionPoints,
pointFrom,
pointFromVector,
pointRotateRads,
pointsEqual,
vectorFromPoint,
vectorNormalize,
vectorScale,
} from "@excalidraw/math";
import {
ellipse,
ellipseSegmentInterceptPoints,
} from "@excalidraw/math/ellipse";
import type {
Curve,
GlobalPoint,
LineSegment,
Radians,
} from "@excalidraw/math";
import type { FrameNameBounds } from "@excalidraw/excalidraw/types";
import { isPathALoop } from "./utils";
import {
type Bounds,
doBoundsIntersect,
elementCenterPoint,
getCenterForBounds,
getCubicBezierCurveBound,
getElementBounds,
} from "./bounds";
import {
hasBoundTextElement,
isFreeDrawElement,
isIframeLikeElement,
isImageElement,
isLinearElement,
isTextElement,
} from "./typeChecks";
import {
deconstructDiamondElement,
deconstructLinearOrFreeDrawElement,
deconstructRectanguloidElement,
} from "./utils";
import { getBoundTextElement } from "./textElement";
import { LinearElementEditor } from "./linearElementEditor";
import { distanceToElement } from "./distance";
import type {
ElementsMap,
ExcalidrawDiamondElement,
ExcalidrawElement,
ExcalidrawEllipseElement,
ExcalidrawFreeDrawElement,
ExcalidrawLinearElement,
ExcalidrawRectanguloidElement,
} from "./types";
export const shouldTestInside = (element: ExcalidrawElement) => {
if (element.type === "arrow") {
return false;
}
const isDraggableFromInside =
!isTransparent(element.backgroundColor) ||
hasBoundTextElement(element) ||
isIframeLikeElement(element) ||
isTextElement(element);
if (element.type === "line") {
return isDraggableFromInside && isPathALoop(element.points);
}
if (element.type === "freedraw") {
return isDraggableFromInside && isPathALoop(element.points);
}
return isDraggableFromInside || isImageElement(element);
};
export type HitTestArgs = {
point: GlobalPoint;
element: ExcalidrawElement;
threshold: number;
elementsMap: ElementsMap;
frameNameBound?: FrameNameBounds | null;
};
export const hitElementItself = ({
point,
element,
threshold,
elementsMap,
frameNameBound = null,
}: HitTestArgs) => {
// Hit test against a frame's name
const hitFrameName = frameNameBound
? isPointWithinBounds(
pointFrom(frameNameBound.x - threshold, frameNameBound.y - threshold),
point,
pointFrom(
frameNameBound.x + frameNameBound.width + threshold,
frameNameBound.y + frameNameBound.height + threshold,
),
)
: false;
// Hit test against the extended, rotated bounding box of the element first
const bounds = getElementBounds(element, elementsMap, true);
const hitBounds = isPointWithinBounds(
pointFrom(bounds[0] - threshold, bounds[1] - threshold),
pointRotateRads(
point,
getCenterForBounds(bounds),
-element.angle as Radians,
),
pointFrom(bounds[2] + threshold, bounds[3] + threshold),
);
// PERF: Bail out early if the point is not even in the
// rotated bounding box or not hitting the frame name (saves 99%)
if (!hitBounds && !hitFrameName) {
return false;
}
// Do the precise (and relatively costly) hit test
const hitElement = shouldTestInside(element)
? // Since `inShape` tests STRICTLY againt the insides of a shape
// we would need `onShape` as well to include the "borders"
isPointInElement(point, element, elementsMap) ||
isPointOnElementOutline(point, element, elementsMap, threshold)
: isPointOnElementOutline(point, element, elementsMap, threshold);
return hitElement || hitFrameName;
};
export const hitElementBoundingBox = (
point: GlobalPoint,
element: ExcalidrawElement,
elementsMap: ElementsMap,
tolerance = 0,
) => {
let [x1, y1, x2, y2] = getElementBounds(element, elementsMap);
x1 -= tolerance;
y1 -= tolerance;
x2 += tolerance;
y2 += tolerance;
return isPointWithinBounds(pointFrom(x1, y1), point, pointFrom(x2, y2));
};
export const hitElementBoundingBoxOnly = (
hitArgs: HitTestArgs,
elementsMap: ElementsMap,
) =>
!hitElementItself(hitArgs) &&
// bound text is considered part of the element (even if it's outside the bounding box)
!hitElementBoundText(hitArgs.point, hitArgs.element, elementsMap) &&
hitElementBoundingBox(hitArgs.point, hitArgs.element, elementsMap);
export const hitElementBoundText = (
point: GlobalPoint,
element: ExcalidrawElement,
elementsMap: ElementsMap,
): boolean => {
const boundTextElementCandidate = getBoundTextElement(element, elementsMap);
if (!boundTextElementCandidate) {
return false;
}
const boundTextElement = isLinearElement(element)
? {
...boundTextElementCandidate,
// arrow's bound text accurate position is not stored in the element's property
// but rather calculated and returned from the following static method
...LinearElementEditor.getBoundTextElementPosition(
element,
boundTextElementCandidate,
elementsMap,
),
}
: boundTextElementCandidate;
return isPointInElement(point, boundTextElement, elementsMap);
};
/**
* Intersect a line with an element for binding test
*
* @param element
* @param line
* @param offset
* @returns
*/
export const intersectElementWithLineSegment = (
element: ExcalidrawElement,
elementsMap: ElementsMap,
line: LineSegment<GlobalPoint>,
offset: number = 0,
onlyFirst = false,
): GlobalPoint[] => {
// First check if the line intersects the element's axis-aligned bounding box
// as it is much faster than checking intersection against the element's shape
const intersectorBounds = [
Math.min(line[0][0] - offset, line[1][0] - offset),
Math.min(line[0][1] - offset, line[1][1] - offset),
Math.max(line[0][0] + offset, line[1][0] + offset),
Math.max(line[0][1] + offset, line[1][1] + offset),
] as Bounds;
const elementBounds = getElementBounds(element, elementsMap);
if (!doBoundsIntersect(intersectorBounds, elementBounds)) {
return [];
}
// Do the actual intersection test against the element's shape
switch (element.type) {
case "rectangle":
case "image":
case "text":
case "iframe":
case "embeddable":
case "frame":
case "selection":
case "magicframe":
return intersectRectanguloidWithLineSegment(
element,
elementsMap,
line,
offset,
onlyFirst,
);
case "diamond":
return intersectDiamondWithLineSegment(
element,
elementsMap,
line,
offset,
onlyFirst,
);
case "ellipse":
return intersectEllipseWithLineSegment(
element,
elementsMap,
line,
offset,
);
case "line":
case "freedraw":
case "arrow":
return intersectLinearOrFreeDrawWithLineSegment(element, line, onlyFirst);
}
};
const curveIntersections = (
curves: Curve<GlobalPoint>[],
segment: LineSegment<GlobalPoint>,
intersections: GlobalPoint[],
center: GlobalPoint,
angle: Radians,
onlyFirst = false,
) => {
for (const c of curves) {
// Optimize by doing a cheap bounding box check first
const b1 = getCubicBezierCurveBound(c[0], c[1], c[2], c[3]);
const b2 = [
Math.min(segment[0][0], segment[1][0]),
Math.min(segment[0][1], segment[1][1]),
Math.max(segment[0][0], segment[1][0]),
Math.max(segment[0][1], segment[1][1]),
] as Bounds;
if (!doBoundsIntersect(b1, b2)) {
continue;
}
const hits = curveIntersectLineSegment(c, segment);
if (hits.length > 0) {
for (const j of hits) {
intersections.push(pointRotateRads(j, center, angle));
}
if (onlyFirst) {
return intersections;
}
}
}
return intersections;
};
const lineIntersections = (
lines: LineSegment<GlobalPoint>[],
segment: LineSegment<GlobalPoint>,
intersections: GlobalPoint[],
center: GlobalPoint,
angle: Radians,
onlyFirst = false,
) => {
for (const l of lines) {
const intersection = lineSegmentIntersectionPoints(l, segment);
if (intersection) {
intersections.push(pointRotateRads(intersection, center, angle));
if (onlyFirst) {
return intersections;
}
}
}
return intersections;
};
const intersectLinearOrFreeDrawWithLineSegment = (
element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
segment: LineSegment<GlobalPoint>,
onlyFirst = false,
): GlobalPoint[] => {
// NOTE: This is the only one which return the decomposed elements
// rotated! This is due to taking advantage of roughjs definitions.
const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
const intersections: GlobalPoint[] = [];
for (const l of lines) {
const intersection = lineSegmentIntersectionPoints(l, segment);
if (intersection) {
intersections.push(intersection);
if (onlyFirst) {
return intersections;
}
}
}
for (const c of curves) {
// Optimize by doing a cheap bounding box check first
const b1 = getCubicBezierCurveBound(c[0], c[1], c[2], c[3]);
const b2 = [
Math.min(segment[0][0], segment[1][0]),
Math.min(segment[0][1], segment[1][1]),
Math.max(segment[0][0], segment[1][0]),
Math.max(segment[0][1], segment[1][1]),
] as Bounds;
if (!doBoundsIntersect(b1, b2)) {
continue;
}
const hits = curveIntersectLineSegment(c, segment);
if (hits.length > 0) {
intersections.push(...hits);
if (onlyFirst) {
return intersections;
}
}
}
return intersections;
};
const intersectRectanguloidWithLineSegment = (
element: ExcalidrawRectanguloidElement,
elementsMap: ElementsMap,
segment: LineSegment<GlobalPoint>,
offset: number = 0,
onlyFirst = false,
): GlobalPoint[] => {
const center = elementCenterPoint(element, elementsMap);
// To emulate a rotated rectangle we rotate the point in the inverse angle
// instead. It's all the same distance-wise.
const rotatedA = pointRotateRads<GlobalPoint>(
segment[0],
center,
-element.angle as Radians,
);
const rotatedB = pointRotateRads<GlobalPoint>(
segment[1],
center,
-element.angle as Radians,
);
const rotatedIntersector = lineSegment(rotatedA, rotatedB);
// Get the element's building components we can test against
const [sides, corners] = deconstructRectanguloidElement(element, offset);
const intersections: GlobalPoint[] = [];
lineIntersections(
sides,
rotatedIntersector,
intersections,
center,
element.angle,
onlyFirst,
);
if (onlyFirst && intersections.length > 0) {
return intersections;
}
curveIntersections(
corners,
rotatedIntersector,
intersections,
center,
element.angle,
onlyFirst,
);
return intersections;
};
/**
*
* @param element
* @param a
* @param b
* @returns
*/
const intersectDiamondWithLineSegment = (
element: ExcalidrawDiamondElement,
elementsMap: ElementsMap,
l: LineSegment<GlobalPoint>,
offset: number = 0,
onlyFirst = false,
): GlobalPoint[] => {
const center = elementCenterPoint(element, elementsMap);
// Rotate the point to the inverse direction to simulate the rotated diamond
// points. It's all the same distance-wise.
const rotatedA = pointRotateRads(l[0], center, -element.angle as Radians);
const rotatedB = pointRotateRads(l[1], center, -element.angle as Radians);
const rotatedIntersector = lineSegment(rotatedA, rotatedB);
const [sides, corners] = deconstructDiamondElement(element, offset);
const intersections: GlobalPoint[] = [];
lineIntersections(
sides,
rotatedIntersector,
intersections,
center,
element.angle,
onlyFirst,
);
if (onlyFirst && intersections.length > 0) {
return intersections;
}
curveIntersections(
corners,
rotatedIntersector,
intersections,
center,
element.angle,
onlyFirst,
);
return intersections;
};
/**
*
* @param element
* @param a
* @param b
* @returns
*/
const intersectEllipseWithLineSegment = (
element: ExcalidrawEllipseElement,
elementsMap: ElementsMap,
l: LineSegment<GlobalPoint>,
offset: number = 0,
): GlobalPoint[] => {
const center = elementCenterPoint(element, elementsMap);
const rotatedA = pointRotateRads(l[0], center, -element.angle as Radians);
const rotatedB = pointRotateRads(l[1], center, -element.angle as Radians);
return ellipseSegmentInterceptPoints(
ellipse(center, element.width / 2 + offset, element.height / 2 + offset),
lineSegment(rotatedA, rotatedB),
).map((p) => pointRotateRads(p, center, element.angle));
};
/**
* Check if the given point is considered on the given shape's border
*
* @param point
* @param element
* @param tolerance
* @returns
*/
const isPointOnElementOutline = (
point: GlobalPoint,
element: ExcalidrawElement,
elementsMap: ElementsMap,
tolerance = 1,
) => distanceToElement(element, elementsMap, point) <= tolerance;
/**
* Check if the given point is considered inside the element's border
*
* @param point
* @param element
* @returns
*/
export const isPointInElement = (
point: GlobalPoint,
element: ExcalidrawElement,
elementsMap: ElementsMap,
) => {
if (
(isLinearElement(element) || isFreeDrawElement(element)) &&
!isPathALoop(element.points)
) {
// There isn't any "inside" for a non-looping path
return false;
}
const [x1, y1, x2, y2] = getElementBounds(element, elementsMap);
if (!isPointWithinBounds(pointFrom(x1, y1), point, pointFrom(x2, y2))) {
return false;
}
const center = pointFrom<GlobalPoint>((x1 + x2) / 2, (y1 + y2) / 2);
const otherPoint = pointFromVector(
vectorScale(
vectorNormalize(vectorFromPoint(point, center, 0.1)),
Math.max(element.width, element.height) * 2,
),
center,
);
const intersector = lineSegment(point, otherPoint);
const intersections = intersectElementWithLineSegment(
element,
elementsMap,
intersector,
).filter((p, pos, arr) => arr.findIndex((q) => pointsEqual(q, p)) === pos);
return intersections.length % 2 === 1;
};
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import type { ElementOrToolType } from "@excalidraw/excalidraw/types";
export const hasBackground = (type: ElementOrToolType) =>
type === "rectangle" ||
type === "iframe" ||
type === "embeddable" ||
type === "ellipse" ||
type === "diamond" ||
type === "line" ||
type === "freedraw";
export const hasStrokeColor = (type: ElementOrToolType) =>
type !== "image" && type !== "frame" && type !== "magicframe";
export const hasStrokeWidth = (type: ElementOrToolType) =>
type === "rectangle" ||
type === "iframe" ||
type === "embeddable" ||
type === "ellipse" ||
type === "diamond" ||
type === "freedraw" ||
type === "arrow" ||
type === "line";
export const hasStrokeStyle = (type: ElementOrToolType) =>
type === "rectangle" ||
type === "iframe" ||
type === "embeddable" ||
type === "ellipse" ||
type === "diamond" ||
type === "arrow" ||
type === "line";
export const canChangeRoundness = (type: ElementOrToolType) =>
type === "rectangle" ||
type === "iframe" ||
type === "embeddable" ||
type === "line" ||
type === "diamond" ||
type === "image";
export const toolIsArrow = (type: ElementOrToolType) => type === "arrow";
export const canHaveArrowheads = (type: ElementOrToolType) => type === "arrow";
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import type { ExcalidrawTextContainer } from "./types";
export const originalContainerCache: {
[id: ExcalidrawTextContainer["id"]]:
| {
height: ExcalidrawTextContainer["height"];
}
| undefined;
} = {};
export const updateOriginalContainerCache = (
id: ExcalidrawTextContainer["id"],
height: ExcalidrawTextContainer["height"],
) => {
const data =
originalContainerCache[id] || (originalContainerCache[id] = { height });
data.height = height;
return data;
};
export const resetOriginalContainerCache = (
id: ExcalidrawTextContainer["id"],
) => {
if (originalContainerCache[id]) {
delete originalContainerCache[id];
}
};
export const getOriginalContainerHeightFromCache = (
id: ExcalidrawTextContainer["id"],
) => {
return originalContainerCache[id]?.height ?? null;
};
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import {
type Radians,
pointFrom,
pointCenter,
pointRotateRads,
vectorFromPoint,
vectorNormalize,
vectorSubtract,
vectorAdd,
vectorScale,
pointFromVector,
clamp,
isCloseTo,
} from "@excalidraw/math";
import { type Point } from "points-on-curve";
import {
elementCenterPoint,
getElementAbsoluteCoords,
getResizedElementAbsoluteCoords,
} from "./bounds";
import type { TransformHandleType } from "./transformHandles";
import type {
ElementsMap,
ExcalidrawElement,
ExcalidrawImageElement,
ImageCrop,
NonDeleted,
} from "./types";
export const MINIMAL_CROP_SIZE = 10;
export const cropElement = (
element: ExcalidrawImageElement,
elementsMap: ElementsMap,
transformHandle: TransformHandleType,
naturalWidth: number,
naturalHeight: number,
pointerX: number,
pointerY: number,
widthAspectRatio?: number,
) => {
const { width: uncroppedWidth, height: uncroppedHeight } =
getUncroppedWidthAndHeight(element);
const naturalWidthToUncropped = naturalWidth / uncroppedWidth;
const naturalHeightToUncropped = naturalHeight / uncroppedHeight;
const croppedLeft = (element.crop?.x ?? 0) / naturalWidthToUncropped;
const croppedTop = (element.crop?.y ?? 0) / naturalHeightToUncropped;
/**
* uncropped width
* *––––––––––––––––––––––––*
* | (x,y) (natural) |
* | *–––––––* |
* | |///////| height | uncropped height
* | *–––––––* |
* | width (natural) |
* *––––––––––––––––––––––––*
*/
const rotatedPointer = pointRotateRads(
pointFrom(pointerX, pointerY),
elementCenterPoint(element, elementsMap),
-element.angle as Radians,
);
pointerX = rotatedPointer[0];
pointerY = rotatedPointer[1];
let nextWidth = element.width;
let nextHeight = element.height;
let crop: ImageCrop | null = element.crop ?? {
x: 0,
y: 0,
width: naturalWidth,
height: naturalHeight,
naturalWidth,
naturalHeight,
};
const previousCropHeight = crop.height;
const previousCropWidth = crop.width;
const isFlippedByX = element.scale[0] === -1;
const isFlippedByY = element.scale[1] === -1;
let changeInHeight = pointerY - element.y;
let changeInWidth = pointerX - element.x;
if (transformHandle.includes("n")) {
nextHeight = clamp(
element.height - changeInHeight,
MINIMAL_CROP_SIZE,
isFlippedByY ? uncroppedHeight - croppedTop : element.height + croppedTop,
);
}
if (transformHandle.includes("s")) {
changeInHeight = pointerY - element.y - element.height;
nextHeight = clamp(
element.height + changeInHeight,
MINIMAL_CROP_SIZE,
isFlippedByY ? element.height + croppedTop : uncroppedHeight - croppedTop,
);
}
if (transformHandle.includes("e")) {
changeInWidth = pointerX - element.x - element.width;
nextWidth = clamp(
element.width + changeInWidth,
MINIMAL_CROP_SIZE,
isFlippedByX ? element.width + croppedLeft : uncroppedWidth - croppedLeft,
);
}
if (transformHandle.includes("w")) {
nextWidth = clamp(
element.width - changeInWidth,
MINIMAL_CROP_SIZE,
isFlippedByX ? uncroppedWidth - croppedLeft : element.width + croppedLeft,
);
}
const updateCropWidthAndHeight = (crop: ImageCrop) => {
crop.height = nextHeight * naturalHeightToUncropped;
crop.width = nextWidth * naturalWidthToUncropped;
};
updateCropWidthAndHeight(crop);
const adjustFlipForHandle = (
handle: TransformHandleType,
crop: ImageCrop,
) => {
updateCropWidthAndHeight(crop);
if (handle.includes("n")) {
if (!isFlippedByY) {
crop.y += previousCropHeight - crop.height;
}
}
if (handle.includes("s")) {
if (isFlippedByY) {
crop.y += previousCropHeight - crop.height;
}
}
if (handle.includes("e")) {
if (isFlippedByX) {
crop.x += previousCropWidth - crop.width;
}
}
if (handle.includes("w")) {
if (!isFlippedByX) {
crop.x += previousCropWidth - crop.width;
}
}
};
switch (transformHandle) {
case "n": {
if (widthAspectRatio) {
const distanceToLeft = croppedLeft + element.width / 2;
const distanceToRight =
uncroppedWidth - croppedLeft - element.width / 2;
const MAX_WIDTH = Math.min(distanceToLeft, distanceToRight) * 2;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
adjustFlipForHandle(transformHandle, crop);
if (widthAspectRatio) {
crop.x += (previousCropWidth - crop.width) / 2;
}
break;
}
case "s": {
if (widthAspectRatio) {
const distanceToLeft = croppedLeft + element.width / 2;
const distanceToRight =
uncroppedWidth - croppedLeft - element.width / 2;
const MAX_WIDTH = Math.min(distanceToLeft, distanceToRight) * 2;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
adjustFlipForHandle(transformHandle, crop);
if (widthAspectRatio) {
crop.x += (previousCropWidth - crop.width) / 2;
}
break;
}
case "w": {
if (widthAspectRatio) {
const distanceToTop = croppedTop + element.height / 2;
const distanceToBottom =
uncroppedHeight - croppedTop - element.height / 2;
const MAX_HEIGHT = Math.min(distanceToTop, distanceToBottom) * 2;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
}
adjustFlipForHandle(transformHandle, crop);
if (widthAspectRatio) {
crop.y += (previousCropHeight - crop.height) / 2;
}
break;
}
case "e": {
if (widthAspectRatio) {
const distanceToTop = croppedTop + element.height / 2;
const distanceToBottom =
uncroppedHeight - croppedTop - element.height / 2;
const MAX_HEIGHT = Math.min(distanceToTop, distanceToBottom) * 2;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
}
adjustFlipForHandle(transformHandle, crop);
if (widthAspectRatio) {
crop.y += (previousCropHeight - crop.height) / 2;
}
break;
}
case "ne": {
if (widthAspectRatio) {
if (changeInWidth > -changeInHeight) {
const MAX_HEIGHT = isFlippedByY
? uncroppedHeight - croppedTop
: croppedTop + element.height;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
} else {
const MAX_WIDTH = isFlippedByX
? croppedLeft + element.width
: uncroppedWidth - croppedLeft;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
}
adjustFlipForHandle(transformHandle, crop);
break;
}
case "nw": {
if (widthAspectRatio) {
if (changeInWidth < changeInHeight) {
const MAX_HEIGHT = isFlippedByY
? uncroppedHeight - croppedTop
: croppedTop + element.height;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
} else {
const MAX_WIDTH = isFlippedByX
? uncroppedWidth - croppedLeft
: croppedLeft + element.width;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
}
adjustFlipForHandle(transformHandle, crop);
break;
}
case "se": {
if (widthAspectRatio) {
if (changeInWidth > changeInHeight) {
const MAX_HEIGHT = isFlippedByY
? croppedTop + element.height
: uncroppedHeight - croppedTop;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
} else {
const MAX_WIDTH = isFlippedByX
? croppedLeft + element.width
: uncroppedWidth - croppedLeft;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
}
adjustFlipForHandle(transformHandle, crop);
break;
}
case "sw": {
if (widthAspectRatio) {
if (-changeInWidth > changeInHeight) {
const MAX_HEIGHT = isFlippedByY
? croppedTop + element.height
: uncroppedHeight - croppedTop;
nextHeight = clamp(
nextWidth / widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_HEIGHT,
);
nextWidth = nextHeight * widthAspectRatio;
} else {
const MAX_WIDTH = isFlippedByX
? uncroppedWidth - croppedLeft
: croppedLeft + element.width;
nextWidth = clamp(
nextHeight * widthAspectRatio,
MINIMAL_CROP_SIZE,
MAX_WIDTH,
);
nextHeight = nextWidth / widthAspectRatio;
}
}
adjustFlipForHandle(transformHandle, crop);
break;
}
default:
break;
}
const newOrigin = recomputeOrigin(
element,
transformHandle,
nextWidth,
nextHeight,
!!widthAspectRatio,
);
// reset crop to null if we're back to orig size
if (
isCloseTo(crop.width, crop.naturalWidth) &&
isCloseTo(crop.height, crop.naturalHeight)
) {
crop = null;
}
return {
x: newOrigin[0],
y: newOrigin[1],
width: nextWidth,
height: nextHeight,
crop,
};
};
const recomputeOrigin = (
stateAtCropStart: NonDeleted<ExcalidrawElement>,
transformHandle: TransformHandleType,
width: number,
height: number,
shouldMaintainAspectRatio?: boolean,
) => {
const [x1, y1, x2, y2] = getResizedElementAbsoluteCoords(
stateAtCropStart,
stateAtCropStart.width,
stateAtCropStart.height,
true,
);
const startTopLeft = pointFrom(x1, y1);
const startBottomRight = pointFrom(x2, y2);
const startCenter: any = pointCenter(startTopLeft, startBottomRight);
const [newBoundsX1, newBoundsY1, newBoundsX2, newBoundsY2] =
getResizedElementAbsoluteCoords(stateAtCropStart, width, height, true);
const newBoundsWidth = newBoundsX2 - newBoundsX1;
const newBoundsHeight = newBoundsY2 - newBoundsY1;
// Calculate new topLeft based on fixed corner during resize
let newTopLeft = [...startTopLeft] as [number, number];
if (["n", "w", "nw"].includes(transformHandle)) {
newTopLeft = [
startBottomRight[0] - Math.abs(newBoundsWidth),
startBottomRight[1] - Math.abs(newBoundsHeight),
];
}
if (transformHandle === "ne") {
const bottomLeft = [startTopLeft[0], startBottomRight[1]];
newTopLeft = [bottomLeft[0], bottomLeft[1] - Math.abs(newBoundsHeight)];
}
if (transformHandle === "sw") {
const topRight = [startBottomRight[0], startTopLeft[1]];
newTopLeft = [topRight[0] - Math.abs(newBoundsWidth), topRight[1]];
}
if (shouldMaintainAspectRatio) {
if (["s", "n"].includes(transformHandle)) {
newTopLeft[0] = startCenter[0] - newBoundsWidth / 2;
}
if (["e", "w"].includes(transformHandle)) {
newTopLeft[1] = startCenter[1] - newBoundsHeight / 2;
}
}
// adjust topLeft to new rotation point
const angle = stateAtCropStart.angle;
const rotatedTopLeft = pointRotateRads(newTopLeft, startCenter, angle);
const newCenter: Point = [
newTopLeft[0] + Math.abs(newBoundsWidth) / 2,
newTopLeft[1] + Math.abs(newBoundsHeight) / 2,
];
const rotatedNewCenter = pointRotateRads(newCenter, startCenter, angle);
newTopLeft = pointRotateRads(
rotatedTopLeft,
rotatedNewCenter,
-angle as Radians,
);
const newOrigin = [...newTopLeft];
newOrigin[0] += stateAtCropStart.x - newBoundsX1;
newOrigin[1] += stateAtCropStart.y - newBoundsY1;
return newOrigin;
};
// refer to https://link.excalidraw.com/l/6rfy1007QOo/6stx5PmRn0k
export const getUncroppedImageElement = (
element: ExcalidrawImageElement,
elementsMap: ElementsMap,
) => {
if (element.crop) {
const { width, height } = getUncroppedWidthAndHeight(element);
const [x1, y1, x2, y2, cx, cy] = getElementAbsoluteCoords(
element,
elementsMap,
);
const topLeftVector = vectorFromPoint(
pointRotateRads(pointFrom(x1, y1), pointFrom(cx, cy), element.angle),
);
const topRightVector = vectorFromPoint(
pointRotateRads(pointFrom(x2, y1), pointFrom(cx, cy), element.angle),
);
const topEdgeNormalized = vectorNormalize(
vectorSubtract(topRightVector, topLeftVector),
);
const bottomLeftVector = vectorFromPoint(
pointRotateRads(pointFrom(x1, y2), pointFrom(cx, cy), element.angle),
);
const leftEdgeVector = vectorSubtract(bottomLeftVector, topLeftVector);
const leftEdgeNormalized = vectorNormalize(leftEdgeVector);
const { cropX, cropY } = adjustCropPosition(element.crop, element.scale);
const rotatedTopLeft = vectorAdd(
vectorAdd(
topLeftVector,
vectorScale(
topEdgeNormalized,
(-cropX * width) / element.crop.naturalWidth,
),
),
vectorScale(
leftEdgeNormalized,
(-cropY * height) / element.crop.naturalHeight,
),
);
const center = pointFromVector(
vectorAdd(
vectorAdd(rotatedTopLeft, vectorScale(topEdgeNormalized, width / 2)),
vectorScale(leftEdgeNormalized, height / 2),
),
);
const unrotatedTopLeft = pointRotateRads(
pointFromVector(rotatedTopLeft),
center,
-element.angle as Radians,
);
const uncroppedElement: ExcalidrawImageElement = {
...element,
x: unrotatedTopLeft[0],
y: unrotatedTopLeft[1],
width,
height,
crop: null,
};
return uncroppedElement;
}
return element;
};
export const getUncroppedWidthAndHeight = (element: ExcalidrawImageElement) => {
if (element.crop) {
const width =
element.width / (element.crop.width / element.crop.naturalWidth);
const height =
element.height / (element.crop.height / element.crop.naturalHeight);
return {
width,
height,
};
}
return {
width: element.width,
height: element.height,
};
};
const adjustCropPosition = (
crop: ImageCrop,
scale: ExcalidrawImageElement["scale"],
) => {
let cropX = crop.x;
let cropY = crop.y;
const flipX = scale[0] === -1;
const flipY = scale[1] === -1;
if (flipX) {
cropX = crop.naturalWidth - Math.abs(cropX) - crop.width;
}
if (flipY) {
cropY = crop.naturalHeight - Math.abs(cropY) - crop.height;
}
return {
cropX,
cropY,
};
};
export const getFlipAdjustedCropPosition = (
element: ExcalidrawImageElement,
natural = false,
) => {
const crop = element.crop;
if (!crop) {
return null;
}
const isFlippedByX = element.scale[0] === -1;
const isFlippedByY = element.scale[1] === -1;
let cropX = crop.x;
let cropY = crop.y;
if (isFlippedByX) {
cropX = crop.naturalWidth - crop.width - crop.x;
}
if (isFlippedByY) {
cropY = crop.naturalHeight - crop.height - crop.y;
}
if (natural) {
return {
x: cropX,
y: cropY,
};
}
const { width, height } = getUncroppedWidthAndHeight(element);
return {
x: cropX / (crop.naturalWidth / width),
y: cropY / (crop.naturalHeight / height),
};
};
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import {
curvePointDistance,
distanceToLineSegment,
pointRotateRads,
} from "@excalidraw/math";
import { ellipse, ellipseDistanceFromPoint } from "@excalidraw/math/ellipse";
import type { GlobalPoint, Radians } from "@excalidraw/math";
import {
deconstructDiamondElement,
deconstructLinearOrFreeDrawElement,
deconstructRectanguloidElement,
} from "./utils";
import { elementCenterPoint } from "./bounds";
import type {
ElementsMap,
ExcalidrawDiamondElement,
ExcalidrawElement,
ExcalidrawEllipseElement,
ExcalidrawFreeDrawElement,
ExcalidrawLinearElement,
ExcalidrawRectanguloidElement,
} from "./types";
export const distanceToElement = (
element: ExcalidrawElement,
elementsMap: ElementsMap,
p: GlobalPoint,
): number => {
switch (element.type) {
case "selection":
case "rectangle":
case "image":
case "text":
case "iframe":
case "embeddable":
case "frame":
case "magicframe":
return distanceToRectanguloidElement(element, elementsMap, p);
case "diamond":
return distanceToDiamondElement(element, elementsMap, p);
case "ellipse":
return distanceToEllipseElement(element, elementsMap, p);
case "line":
case "arrow":
case "freedraw":
return distanceToLinearOrFreeDraElement(element, p);
}
};
/**
* Returns the distance of a point and the provided rectangular-shaped element,
* accounting for roundness and rotation
*
* @param element The rectanguloid element
* @param p The point to consider
* @returns The eucledian distance to the outline of the rectanguloid element
*/
const distanceToRectanguloidElement = (
element: ExcalidrawRectanguloidElement,
elementsMap: ElementsMap,
p: GlobalPoint,
) => {
const center = elementCenterPoint(element, elementsMap);
// To emulate a rotated rectangle we rotate the point in the inverse angle
// instead. It's all the same distance-wise.
const rotatedPoint = pointRotateRads(p, center, -element.angle as Radians);
// Get the element's building components we can test against
const [sides, corners] = deconstructRectanguloidElement(element);
return Math.min(
...sides.map((s) => distanceToLineSegment(rotatedPoint, s)),
...corners
.map((a) => curvePointDistance(a, rotatedPoint))
.filter((d): d is number => d !== null),
);
};
/**
* Returns the distance of a point and the provided diamond element, accounting
* for roundness and rotation
*
* @param element The diamond element
* @param p The point to consider
* @returns The eucledian distance to the outline of the diamond
*/
const distanceToDiamondElement = (
element: ExcalidrawDiamondElement,
elementsMap: ElementsMap,
p: GlobalPoint,
): number => {
const center = elementCenterPoint(element, elementsMap);
// Rotate the point to the inverse direction to simulate the rotated diamond
// points. It's all the same distance-wise.
const rotatedPoint = pointRotateRads(p, center, -element.angle as Radians);
const [sides, curves] = deconstructDiamondElement(element);
return Math.min(
...sides.map((s) => distanceToLineSegment(rotatedPoint, s)),
...curves
.map((a) => curvePointDistance(a, rotatedPoint))
.filter((d): d is number => d !== null),
);
};
/**
* Returns the distance of a point and the provided ellipse element, accounting
* for roundness and rotation
*
* @param element The ellipse element
* @param p The point to consider
* @returns The eucledian distance to the outline of the ellipse
*/
const distanceToEllipseElement = (
element: ExcalidrawEllipseElement,
elementsMap: ElementsMap,
p: GlobalPoint,
): number => {
const center = elementCenterPoint(element, elementsMap);
return ellipseDistanceFromPoint(
// Instead of rotating the ellipse, rotate the point to the inverse angle
pointRotateRads(p, center, -element.angle as Radians),
ellipse(center, element.width / 2, element.height / 2),
);
};
const distanceToLinearOrFreeDraElement = (
element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
p: GlobalPoint,
) => {
const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
return Math.min(
...lines.map((s) => distanceToLineSegment(p, s)),
...curves.map((a) => curvePointDistance(a, p)),
);
};
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import type { AppState } from "@excalidraw/excalidraw/types";
import { getCommonBoundingBox } from "./bounds";
import { newElementWith } from "./mutateElement";
import { getSelectedElementsByGroup } from "./groups";
import type { ElementsMap, ExcalidrawElement } from "./types";
export interface Distribution {
space: "between";
axis: "x" | "y";
}
export const distributeElements = (
selectedElements: ExcalidrawElement[],
elementsMap: ElementsMap,
distribution: Distribution,
appState: Readonly<AppState>,
): ExcalidrawElement[] => {
const [start, mid, end, extent] =
distribution.axis === "x"
? (["minX", "midX", "maxX", "width"] as const)
: (["minY", "midY", "maxY", "height"] as const);
const bounds = getCommonBoundingBox(selectedElements);
const groups = getSelectedElementsByGroup(
selectedElements,
elementsMap,
appState,
)
.map((group) => [group, getCommonBoundingBox(group)] as const)
.sort((a, b) => a[1][mid] - b[1][mid]);
let span = 0;
for (const group of groups) {
span += group[1][extent];
}
const step = (bounds[extent] - span) / (groups.length - 1);
if (step < 0) {
// If we have a negative step, we'll need to distribute from centers
// rather than from gaps. Buckle up, this is a weird one.
// Get indices of boxes that define start and end of our bounding box
const index0 = groups.findIndex((g) => g[1][start] === bounds[start]);
const index1 = groups.findIndex((g) => g[1][end] === bounds[end]);
// Get our step, based on the distance between the center points of our
// start and end boxes
const step =
(groups[index1][1][mid] - groups[index0][1][mid]) / (groups.length - 1);
let pos = groups[index0][1][mid];
return groups.flatMap(([group, box], index) => {
const translation = {
x: 0,
y: 0,
};
// Don't move our start and end boxes
if (index !== index0 && index !== index1) {
pos += step;
translation[distribution.axis] = pos - box[mid];
}
return group.map((element) =>
newElementWith(element, {
x: element.x + translation.x,
y: element.y + translation.y,
}),
);
});
}
// Distribute from gaps
let pos = bounds[start];
return groups.flatMap(([group, box]) => {
const translation = {
x: 0,
y: 0,
};
translation[distribution.axis] = pos - box[start];
pos += step;
pos += box[extent];
return group.map((element) =>
newElementWith(element, {
x: element.x + translation.x,
y: element.y + translation.y,
}),
);
});
};
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import {
TEXT_AUTOWRAP_THRESHOLD,
getGridPoint,
getFontString,
} from "@excalidraw/common";
import type {
AppState,
NormalizedZoomValue,
NullableGridSize,
PointerDownState,
} from "@excalidraw/excalidraw/types";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import { updateBoundElements } from "./binding";
import { getCommonBounds } from "./bounds";
import { getPerfectElementSize } from "./sizeHelpers";
import { getBoundTextElement } from "./textElement";
import { getMinTextElementWidth } from "./textMeasurements";
import {
isArrowElement,
isElbowArrow,
isFrameLikeElement,
isImageElement,
isTextElement,
} from "./typeChecks";
import type { Scene } from "./Scene";
import type { Bounds } from "./bounds";
import type { ExcalidrawElement } from "./types";
export const dragSelectedElements = (
pointerDownState: PointerDownState,
_selectedElements: NonDeletedExcalidrawElement[],
offset: { x: number; y: number },
scene: Scene,
snapOffset: {
x: number;
y: number;
},
gridSize: NullableGridSize,
) => {
if (
_selectedElements.length === 1 &&
isElbowArrow(_selectedElements[0]) &&
(_selectedElements[0].startBinding || _selectedElements[0].endBinding)
) {
return;
}
const selectedElements = _selectedElements.filter((element) => {
if (isElbowArrow(element) && element.startBinding && element.endBinding) {
const startElement = _selectedElements.find(
(el) => el.id === element.startBinding?.elementId,
);
const endElement = _selectedElements.find(
(el) => el.id === element.endBinding?.elementId,
);
return startElement && endElement;
}
return true;
});
// we do not want a frame and its elements to be selected at the same time
// but when it happens (due to some bug), we want to avoid updating element
// in the frame twice, hence the use of set
const elementsToUpdate = new Set<NonDeletedExcalidrawElement>(
selectedElements,
);
const frames = selectedElements
.filter((e) => isFrameLikeElement(e))
.map((f) => f.id);
if (frames.length > 0) {
for (const element of scene.getNonDeletedElements()) {
if (element.frameId !== null && frames.includes(element.frameId)) {
elementsToUpdate.add(element);
}
}
}
const origElements: ExcalidrawElement[] = [];
for (const element of elementsToUpdate) {
const origElement = pointerDownState.originalElements.get(element.id);
// if original element is not set (e.g. when you duplicate during a drag
// operation), exit to avoid undefined behavior
if (!origElement) {
return;
}
origElements.push(origElement);
}
const adjustedOffset = calculateOffset(
getCommonBounds(origElements),
offset,
snapOffset,
gridSize,
);
elementsToUpdate.forEach((element) => {
updateElementCoords(pointerDownState, element, scene, adjustedOffset);
if (!isArrowElement(element)) {
// skip arrow labels since we calculate its position during render
const textElement = getBoundTextElement(
element,
scene.getNonDeletedElementsMap(),
);
if (textElement) {
updateElementCoords(
pointerDownState,
textElement,
scene,
adjustedOffset,
);
}
updateBoundElements(element, scene, {
simultaneouslyUpdated: Array.from(elementsToUpdate),
});
}
});
};
const calculateOffset = (
commonBounds: Bounds,
dragOffset: { x: number; y: number },
snapOffset: { x: number; y: number },
gridSize: NullableGridSize,
): { x: number; y: number } => {
const [x, y] = commonBounds;
let nextX = x + dragOffset.x + snapOffset.x;
let nextY = y + dragOffset.y + snapOffset.y;
if (snapOffset.x === 0 || snapOffset.y === 0) {
const [nextGridX, nextGridY] = getGridPoint(
x + dragOffset.x,
y + dragOffset.y,
gridSize,
);
if (snapOffset.x === 0) {
nextX = nextGridX;
}
if (snapOffset.y === 0) {
nextY = nextGridY;
}
}
return {
x: nextX - x,
y: nextY - y,
};
};
const updateElementCoords = (
pointerDownState: PointerDownState,
element: NonDeletedExcalidrawElement,
scene: Scene,
dragOffset: { x: number; y: number },
) => {
const originalElement =
pointerDownState.originalElements.get(element.id) ?? element;
const nextX = originalElement.x + dragOffset.x;
const nextY = originalElement.y + dragOffset.y;
scene.mutateElement(element, {
x: nextX,
y: nextY,
});
};
export const getDragOffsetXY = (
selectedElements: NonDeletedExcalidrawElement[],
x: number,
y: number,
): [number, number] => {
const [x1, y1] = getCommonBounds(selectedElements);
return [x - x1, y - y1];
};
export const dragNewElement = ({
newElement,
elementType,
originX,
originY,
x,
y,
width,
height,
shouldMaintainAspectRatio,
shouldResizeFromCenter,
zoom,
scene,
widthAspectRatio = null,
originOffset = null,
informMutation = true,
}: {
newElement: NonDeletedExcalidrawElement;
elementType: AppState["activeTool"]["type"];
originX: number;
originY: number;
x: number;
y: number;
width: number;
height: number;
shouldMaintainAspectRatio: boolean;
shouldResizeFromCenter: boolean;
zoom: NormalizedZoomValue;
scene: Scene;
/** whether to keep given aspect ratio when `isResizeWithSidesSameLength` is
true */
widthAspectRatio?: number | null;
originOffset?: {
x: number;
y: number;
} | null;
informMutation?: boolean;
}) => {
if (shouldMaintainAspectRatio && newElement.type !== "selection") {
if (widthAspectRatio) {
height = width / widthAspectRatio;
} else {
// Depending on where the cursor is at (x, y) relative to where the starting point is
// (originX, originY), we use ONLY width or height to control size increase.
// This allows the cursor to always "stick" to one of the sides of the bounding box.
if (Math.abs(y - originY) > Math.abs(x - originX)) {
({ width, height } = getPerfectElementSize(
elementType,
height,
x < originX ? -width : width,
));
} else {
({ width, height } = getPerfectElementSize(
elementType,
width,
y < originY ? -height : height,
));
}
if (height < 0) {
height = -height;
}
}
}
let newX = x < originX ? originX - width : originX;
let newY = y < originY ? originY - height : originY;
if (shouldResizeFromCenter) {
width += width;
height += height;
newX = originX - width / 2;
newY = originY - height / 2;
}
let textAutoResize = null;
if (isTextElement(newElement)) {
height = newElement.height;
const minWidth = getMinTextElementWidth(
getFontString({
fontSize: newElement.fontSize,
fontFamily: newElement.fontFamily,
}),
newElement.lineHeight,
);
width = Math.max(width, minWidth);
if (Math.abs(x - originX) > TEXT_AUTOWRAP_THRESHOLD / zoom) {
textAutoResize = {
autoResize: false,
};
}
newY = originY;
if (shouldResizeFromCenter) {
newX = originX - width / 2;
}
}
if (width !== 0 && height !== 0) {
let imageInitialDimension = null;
if (isImageElement(newElement)) {
imageInitialDimension = {
initialWidth: width,
initialHeight: height,
};
}
scene.mutateElement(
newElement,
{
x: newX + (originOffset?.x ?? 0),
y: newY + (originOffset?.y ?? 0),
width,
height,
...textAutoResize,
...imageInitialDimension,
},
{ informMutation, isDragging: false },
);
}
};
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import {
ORIG_ID,
randomId,
randomInteger,
arrayToMap,
castArray,
findLastIndex,
getUpdatedTimestamp,
isTestEnv,
} from "@excalidraw/common";
import type { Mutable } from "@excalidraw/common/utility-types";
import type { AppState } from "@excalidraw/excalidraw/types";
import {
getElementsInGroup,
getNewGroupIdsForDuplication,
getSelectedGroupForElement,
} from "./groups";
import {
bindElementsToFramesAfterDuplication,
getFrameChildren,
} from "./frame";
import { normalizeElementOrder } from "./sortElements";
import { bumpVersion } from "./mutateElement";
import {
hasBoundTextElement,
isBoundToContainer,
isFrameLikeElement,
} from "./typeChecks";
import { getBoundTextElement, getContainerElement } from "./textElement";
import { fixDuplicatedBindingsAfterDuplication } from "./binding";
import type {
ElementsMap,
ExcalidrawElement,
GroupId,
NonDeletedSceneElementsMap,
} from "./types";
/**
* Duplicate an element, often used in the alt-drag operation.
* Note that this method has gotten a bit complicated since the
* introduction of gruoping/ungrouping elements.
* @param editingGroupId The current group being edited. The new
* element will inherit this group and its
* parents.
* @param groupIdMapForOperation A Map that maps old group IDs to
* duplicated ones. If you are duplicating
* multiple elements at once, share this map
* amongst all of them
* @param element Element to duplicate
*/
export const duplicateElement = <TElement extends ExcalidrawElement>(
editingGroupId: AppState["editingGroupId"],
groupIdMapForOperation: Map<GroupId, GroupId>,
element: TElement,
randomizeSeed?: boolean,
): Readonly<TElement> => {
const copy = deepCopyElement(element);
if (isTestEnv()) {
__test__defineOrigId(copy, element.id);
}
copy.id = randomId();
copy.updated = getUpdatedTimestamp();
if (randomizeSeed) {
copy.seed = randomInteger();
bumpVersion(copy);
}
copy.groupIds = getNewGroupIdsForDuplication(
copy.groupIds,
editingGroupId,
(groupId) => {
if (!groupIdMapForOperation.has(groupId)) {
groupIdMapForOperation.set(groupId, randomId());
}
return groupIdMapForOperation.get(groupId)!;
},
);
return copy;
};
export const duplicateElements = (
opts: {
elements: readonly ExcalidrawElement[];
randomizeSeed?: boolean;
overrides?: (data: {
duplicateElement: ExcalidrawElement;
origElement: ExcalidrawElement;
origIdToDuplicateId: Map<
ExcalidrawElement["id"],
ExcalidrawElement["id"]
>;
}) => Partial<ExcalidrawElement>;
} & (
| {
/**
* Duplicates all elements in array.
*
* Use this when programmaticaly duplicating elements, without direct
* user interaction.
*/
type: "everything";
}
| {
/**
* Duplicates specified elements and inserts them back into the array
* in specified order.
*
* Use this when duplicating Scene elements, during user interaction
* such as alt-drag or on duplicate action.
*/
type: "in-place";
idsOfElementsToDuplicate: Map<
ExcalidrawElement["id"],
ExcalidrawElement
>;
appState: {
editingGroupId: AppState["editingGroupId"];
selectedGroupIds: AppState["selectedGroupIds"];
};
}
),
) => {
let { elements } = opts;
const appState =
"appState" in opts
? opts.appState
: ({
editingGroupId: null,
selectedGroupIds: {},
} as const);
// Ids of elements that have already been processed so we don't push them
// into the array twice if we end up backtracking when retrieving
// discontiguous group of elements (can happen due to a bug, or in edge
// cases such as a group containing deleted elements which were not selected).
//
// This is not enough to prevent duplicates, so we do a second loop afterwards
// to remove them.
//
// For convenience we mark even the newly created ones even though we don't
// loop over them.
const processedIds = new Map<ExcalidrawElement["id"], true>();
const groupIdMap = new Map();
const duplicatedElements: ExcalidrawElement[] = [];
const origElements: ExcalidrawElement[] = [];
const origIdToDuplicateId = new Map<
ExcalidrawElement["id"],
ExcalidrawElement["id"]
>();
const duplicateIdToOrigElement = new Map<
ExcalidrawElement["id"],
ExcalidrawElement
>();
const duplicateElementsMap = new Map<string, ExcalidrawElement>();
const elementsMap = arrayToMap(elements) as ElementsMap;
const _idsOfElementsToDuplicate =
opts.type === "in-place"
? opts.idsOfElementsToDuplicate
: new Map(elements.map((el) => [el.id, el]));
// For sanity
if (opts.type === "in-place") {
for (const groupId of Object.keys(opts.appState.selectedGroupIds)) {
elements
.filter((el) => el.groupIds?.includes(groupId))
.forEach((el) => _idsOfElementsToDuplicate.set(el.id, el));
}
}
elements = normalizeElementOrder(elements);
const elementsWithDuplicates: ExcalidrawElement[] = elements.slice();
// helper functions
// -------------------------------------------------------------------------
// Used for the heavy lifing of copying a single element, a group of elements
// an element with bound text etc.
const copyElements = <T extends ExcalidrawElement | ExcalidrawElement[]>(
element: T,
): T extends ExcalidrawElement[]
? ExcalidrawElement[]
: ExcalidrawElement | null => {
const elements = castArray(element);
const _newElements = elements.reduce(
(acc: ExcalidrawElement[], element) => {
if (processedIds.has(element.id)) {
return acc;
}
processedIds.set(element.id, true);
const newElement = duplicateElement(
appState.editingGroupId,
groupIdMap,
element,
opts.randomizeSeed,
);
processedIds.set(newElement.id, true);
duplicateElementsMap.set(newElement.id, newElement);
origIdToDuplicateId.set(element.id, newElement.id);
duplicateIdToOrigElement.set(newElement.id, element);
origElements.push(element);
duplicatedElements.push(newElement);
acc.push(newElement);
return acc;
},
[],
);
return (
Array.isArray(element) ? _newElements : _newElements[0] || null
) as T extends ExcalidrawElement[]
? ExcalidrawElement[]
: ExcalidrawElement | null;
};
// Helper to position cloned elements in the Z-order the product needs it
const insertBeforeOrAfterIndex = (
index: number,
elements: ExcalidrawElement | null | ExcalidrawElement[],
) => {
if (!elements) {
return;
}
if (index > elementsWithDuplicates.length - 1) {
elementsWithDuplicates.push(...castArray(elements));
return;
}
elementsWithDuplicates.splice(index + 1, 0, ...castArray(elements));
};
const frameIdsToDuplicate = new Set(
elements
.filter(
(el) => _idsOfElementsToDuplicate.has(el.id) && isFrameLikeElement(el),
)
.map((el) => el.id),
);
for (const element of elements) {
if (processedIds.has(element.id)) {
continue;
}
if (!_idsOfElementsToDuplicate.has(element.id)) {
continue;
}
// groups
// -------------------------------------------------------------------------
const groupId = getSelectedGroupForElement(appState, element);
if (groupId) {
const groupElements = getElementsInGroup(elements, groupId).flatMap(
(element) =>
isFrameLikeElement(element)
? [...getFrameChildren(elements, element.id), element]
: [element],
);
const targetIndex = findLastIndex(elementsWithDuplicates, (el) => {
return el.groupIds?.includes(groupId);
});
insertBeforeOrAfterIndex(targetIndex, copyElements(groupElements));
continue;
}
// frame duplication
// -------------------------------------------------------------------------
if (element.frameId && frameIdsToDuplicate.has(element.frameId)) {
continue;
}
if (isFrameLikeElement(element)) {
const frameId = element.id;
const frameChildren = getFrameChildren(elements, frameId);
const targetIndex = findLastIndex(elementsWithDuplicates, (el) => {
return el.frameId === frameId || el.id === frameId;
});
insertBeforeOrAfterIndex(
targetIndex,
copyElements([...frameChildren, element]),
);
continue;
}
// text container
// -------------------------------------------------------------------------
if (hasBoundTextElement(element)) {
const boundTextElement = getBoundTextElement(element, elementsMap);
const targetIndex = findLastIndex(elementsWithDuplicates, (el) => {
return (
el.id === element.id ||
("containerId" in el && el.containerId === element.id)
);
});
if (boundTextElement) {
insertBeforeOrAfterIndex(
targetIndex,
copyElements([element, boundTextElement]),
);
} else {
insertBeforeOrAfterIndex(targetIndex, copyElements(element));
}
continue;
}
if (isBoundToContainer(element)) {
const container = getContainerElement(element, elementsMap);
const targetIndex = findLastIndex(elementsWithDuplicates, (el) => {
return el.id === element.id || el.id === container?.id;
});
if (container) {
insertBeforeOrAfterIndex(
targetIndex,
copyElements([container, element]),
);
} else {
insertBeforeOrAfterIndex(targetIndex, copyElements(element));
}
continue;
}
// default duplication (regular elements)
// -------------------------------------------------------------------------
insertBeforeOrAfterIndex(
findLastIndex(elementsWithDuplicates, (el) => el.id === element.id),
copyElements(element),
);
}
// ---------------------------------------------------------------------------
fixDuplicatedBindingsAfterDuplication(
duplicatedElements,
origIdToDuplicateId,
duplicateElementsMap as NonDeletedSceneElementsMap,
);
bindElementsToFramesAfterDuplication(
elementsWithDuplicates,
origElements,
origIdToDuplicateId,
);
if (opts.overrides) {
for (const duplicateElement of duplicatedElements) {
const origElement = duplicateIdToOrigElement.get(duplicateElement.id);
if (origElement) {
Object.assign(
duplicateElement,
opts.overrides({
duplicateElement,
origElement,
origIdToDuplicateId,
}),
);
}
}
}
return {
duplicatedElements,
duplicateElementsMap,
elementsWithDuplicates,
origIdToDuplicateId,
};
};
// Simplified deep clone for the purpose of cloning ExcalidrawElement.
//
// Only clones plain objects and arrays. Doesn't clone Date, RegExp, Map, Set,
// Typed arrays and other non-null objects.
//
// Adapted from https://github.com/lukeed/klona
//
// The reason for `deepCopyElement()` wrapper is type safety (only allow
// passing ExcalidrawElement as the top-level argument).
const _deepCopyElement = (val: any, depth: number = 0) => {
// only clone non-primitives
if (val == null || typeof val !== "object") {
return val;
}
const objectType = Object.prototype.toString.call(val);
if (objectType === "[object Object]") {
const tmp =
typeof val.constructor === "function"
? Object.create(Object.getPrototypeOf(val))
: {};
for (const key in val) {
if (val.hasOwnProperty(key)) {
// don't copy non-serializable objects like these caches. They'll be
// populated when the element is rendered.
if (depth === 0 && (key === "shape" || key === "canvas")) {
continue;
}
tmp[key] = _deepCopyElement(val[key], depth + 1);
}
}
return tmp;
}
if (Array.isArray(val)) {
let k = val.length;
const arr = new Array(k);
while (k--) {
arr[k] = _deepCopyElement(val[k], depth + 1);
}
return arr;
}
// we're not cloning non-array & non-plain-object objects because we
// don't support them on excalidraw elements yet. If we do, we need to make
// sure we start cloning them, so let's warn about it.
if (import.meta.env.DEV) {
if (
objectType !== "[object Object]" &&
objectType !== "[object Array]" &&
objectType.startsWith("[object ")
) {
console.warn(
`_deepCloneElement: unexpected object type ${objectType}. This value will not be cloned!`,
);
}
}
return val;
};
/**
* Clones ExcalidrawElement data structure. Does not regenerate id, nonce, or
* any value. The purpose is to to break object references for immutability
* reasons, whenever we want to keep the original element, but ensure it's not
* mutated.
*
* Only clones plain objects and arrays. Doesn't clone Date, RegExp, Map, Set,
* Typed arrays and other non-null objects.
*/
export const deepCopyElement = <T extends ExcalidrawElement>(
val: T,
): Mutable<T> => {
return _deepCopyElement(val);
};
const __test__defineOrigId = (clonedObj: object, origId: string) => {
Object.defineProperty(clonedObj, ORIG_ID, {
value: origId,
writable: false,
enumerable: false,
});
};
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/**
* Create and link between shapes.
*/
import { ELEMENT_LINK_KEY, normalizeLink } from "@excalidraw/common";
import type { AppProps, AppState } from "@excalidraw/excalidraw/types";
import { elementsAreInSameGroup } from "./groups";
import type { ExcalidrawElement } from "./types";
export const defaultGetElementLinkFromSelection: Exclude<
AppProps["generateLinkForSelection"],
undefined
> = (id, type) => {
const url = window.location.href;
try {
const link = new URL(url);
link.searchParams.set(ELEMENT_LINK_KEY, id);
return normalizeLink(link.toString());
} catch (error) {
console.error(error);
}
return normalizeLink(url);
};
export const getLinkIdAndTypeFromSelection = (
selectedElements: ExcalidrawElement[],
appState: AppState,
): {
id: string;
type: "element" | "group";
} | null => {
if (
selectedElements.length > 0 &&
canCreateLinkFromElements(selectedElements)
) {
if (selectedElements.length === 1) {
return {
id: selectedElements[0].id,
type: "element",
};
}
if (selectedElements.length > 1) {
const selectedGroupId = Object.keys(appState.selectedGroupIds)[0];
if (selectedGroupId) {
return {
id: selectedGroupId,
type: "group",
};
}
return {
id: selectedElements[0].groupIds[0],
type: "group",
};
}
}
return null;
};
export const canCreateLinkFromElements = (
selectedElements: ExcalidrawElement[],
) => {
if (selectedElements.length === 1) {
return true;
}
if (selectedElements.length > 1 && elementsAreInSameGroup(selectedElements)) {
return true;
}
return false;
};
export const isElementLink = (url: string) => {
try {
const _url = new URL(url);
return (
_url.searchParams.has(ELEMENT_LINK_KEY) &&
_url.host === window.location.host
);
} catch (error) {
return false;
}
};
export const parseElementLinkFromURL = (url: string) => {
try {
const { searchParams } = new URL(url);
if (searchParams.has(ELEMENT_LINK_KEY)) {
const id = searchParams.get(ELEMENT_LINK_KEY);
return id;
}
} catch {}
return null;
};
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import {
FONT_FAMILY,
VERTICAL_ALIGN,
escapeDoubleQuotes,
getFontString,
} from "@excalidraw/common";
import type { ExcalidrawProps } from "@excalidraw/excalidraw/types";
import type { MarkRequired } from "@excalidraw/common/utility-types";
import { newTextElement } from "./newElement";
import { wrapText } from "./textWrapping";
import { isIframeElement } from "./typeChecks";
import type {
ExcalidrawElement,
ExcalidrawIframeLikeElement,
IframeData,
} from "./types";
type IframeDataWithSandbox = MarkRequired<IframeData, "sandbox">;
const embeddedLinkCache = new Map<string, IframeDataWithSandbox>();
const RE_YOUTUBE =
/^(?:http(?:s)?:\/\/)?(?:www\.)?youtu(?:be\.com|\.be)\/(embed\/|watch\?v=|shorts\/|playlist\?list=|embed\/videoseries\?list=)?([a-zA-Z0-9_-]+)/;
const RE_VIMEO =
/^(?:http(?:s)?:\/\/)?(?:(?:w){3}\.)?(?:player\.)?vimeo\.com\/(?:video\/)?([^?\s]+)(?:\?.*)?$/;
const RE_FIGMA = /^https:\/\/(?:www\.)?figma\.com/;
const RE_GH_GIST = /^https:\/\/gist\.github\.com\/([\w_-]+)\/([\w_-]+)/;
const RE_GH_GIST_EMBED =
/^<script[\s\S]*?\ssrc=["'](https:\/\/gist\.github\.com\/.*?)\.js["']/i;
const RE_MSFORMS = /^(?:https?:\/\/)?forms\.microsoft\.com\//;
// not anchored to start to allow <blockquote> twitter embeds
const RE_TWITTER =
/(?:https?:\/\/)?(?:(?:w){3}\.)?(?:twitter|x)\.com\/[^/]+\/status\/(\d+)/;
const RE_TWITTER_EMBED =
/^<blockquote[\s\S]*?\shref=["'](https?:\/\/(?:twitter|x)\.com\/[^"']*)/i;
const RE_VALTOWN =
/^https:\/\/(?:www\.)?val\.town\/(v|embed)\/[a-zA-Z_$][0-9a-zA-Z_$]+\.[a-zA-Z_$][0-9a-zA-Z_$]+/;
const RE_GENERIC_EMBED =
/^<(?:iframe|blockquote)[\s\S]*?\s(?:src|href)=["']([^"']*)["'][\s\S]*?>$/i;
const RE_GIPHY =
/giphy.com\/(?:clips|embed|gifs)\/[a-zA-Z0-9]*?-?([a-zA-Z0-9]+)(?:[^a-zA-Z0-9]|$)/;
const RE_REDDIT =
/^(?:http(?:s)?:\/\/)?(?:www\.)?reddit\.com\/r\/([a-zA-Z0-9_]+)\/comments\/([a-zA-Z0-9_]+)\/([a-zA-Z0-9_]+)\/?(?:\?[^#\s]*)?(?:#[^\s]*)?$/;
const RE_REDDIT_EMBED =
/^<blockquote[\s\S]*?\shref=["'](https?:\/\/(?:www\.)?reddit\.com\/[^"']*)/i;
const parseYouTubeTimestamp = (url: string): number => {
let timeParam: string | null | undefined;
try {
const urlObj = new URL(url.startsWith("http") ? url : `https://${url}`);
timeParam =
urlObj.searchParams.get("t") || urlObj.searchParams.get("start");
} catch (error) {
const timeMatch = url.match(/[?&#](?:t|start)=([^&#\s]+)/);
timeParam = timeMatch?.[1];
}
if (!timeParam) {
return 0;
}
if (/^\d+$/.test(timeParam)) {
return parseInt(timeParam, 10);
}
const timeMatch = timeParam.match(/^(?:(\d+)h)?(?:(\d+)m)?(?:(\d+)s)?$/);
if (!timeMatch) {
return 0;
}
const [, hours = "0", minutes = "0", seconds = "0"] = timeMatch;
return parseInt(hours) * 3600 + parseInt(minutes) * 60 + parseInt(seconds);
};
const ALLOWED_DOMAINS = new Set([
"youtube.com",
"youtu.be",
"vimeo.com",
"player.vimeo.com",
"figma.com",
"link.excalidraw.com",
"gist.github.com",
"twitter.com",
"x.com",
"*.simplepdf.eu",
"stackblitz.com",
"val.town",
"giphy.com",
"reddit.com",
"forms.microsoft.com",
]);
const ALLOW_SAME_ORIGIN = new Set([
"youtube.com",
"youtu.be",
"vimeo.com",
"player.vimeo.com",
"figma.com",
"twitter.com",
"x.com",
"*.simplepdf.eu",
"stackblitz.com",
"reddit.com",
"forms.microsoft.com",
]);
export const createSrcDoc = (body: string) => {
return `<html><body>${body}</body></html>`;
};
export const getEmbedLink = (
link: string | null | undefined,
): IframeDataWithSandbox | null => {
if (!link) {
return null;
}
if (embeddedLinkCache.has(link)) {
return embeddedLinkCache.get(link)!;
}
const originalLink = link;
const allowSameOrigin = ALLOW_SAME_ORIGIN.has(
matchHostname(link, ALLOW_SAME_ORIGIN) || "",
);
let type: "video" | "generic" = "generic";
let aspectRatio = { w: 560, h: 840 };
const ytLink = link.match(RE_YOUTUBE);
if (ytLink?.[2]) {
const startTime = parseYouTubeTimestamp(originalLink);
const time = startTime > 0 ? `&start=${startTime}` : ``;
const isPortrait = link.includes("shorts");
type = "video";
switch (ytLink[1]) {
case "embed/":
case "watch?v=":
case "shorts/":
link = `https://www.youtube.com/embed/${ytLink[2]}?enablejsapi=1${time}`;
break;
case "playlist?list=":
case "embed/videoseries?list=":
link = `https://www.youtube.com/embed/videoseries?list=${ytLink[2]}&enablejsapi=1${time}`;
break;
default:
link = `https://www.youtube.com/embed/${ytLink[2]}?enablejsapi=1${time}`;
break;
}
aspectRatio = isPortrait ? { w: 315, h: 560 } : { w: 560, h: 315 };
embeddedLinkCache.set(originalLink, {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
});
return {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
};
}
const vimeoLink = link.match(RE_VIMEO);
if (vimeoLink?.[1]) {
const target = vimeoLink?.[1];
const error = !/^\d+$/.test(target)
? new URIError("Invalid embed link format")
: undefined;
type = "video";
link = `https://player.vimeo.com/video/${target}?api=1`;
aspectRatio = { w: 560, h: 315 };
//warning deliberately ommited so it is displayed only once per link
//same link next time will be served from cache
embeddedLinkCache.set(originalLink, {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
});
return {
link,
intrinsicSize: aspectRatio,
type,
error,
sandbox: { allowSameOrigin },
};
}
const figmaLink = link.match(RE_FIGMA);
if (figmaLink) {
type = "generic";
link = `https://www.figma.com/embed?embed_host=share&url=${encodeURIComponent(
link,
)}`;
aspectRatio = { w: 550, h: 550 };
embeddedLinkCache.set(originalLink, {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
});
return {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
};
}
const valLink = link.match(RE_VALTOWN);
if (valLink) {
link =
valLink[1] === "embed" ? valLink[0] : valLink[0].replace("/v", "/embed");
embeddedLinkCache.set(originalLink, {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
});
return {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
};
}
if (RE_MSFORMS.test(link) && !link.includes("embed=true")) {
link += link.includes("?") ? "&embed=true" : "?embed=true";
}
if (RE_TWITTER.test(link)) {
const postId = link.match(RE_TWITTER)![1];
// the embed srcdoc still supports twitter.com domain only.
// Note that we don't attempt to parse the username as it can consist of
// non-latin1 characters, and the username in the url can be set to anything
// without affecting the embed.
const safeURL = escapeDoubleQuotes(
`https://twitter.com/x/status/${postId}`,
);
const ret: IframeDataWithSandbox = {
type: "document",
srcdoc: (theme: string) =>
createSrcDoc(
`<blockquote class="twitter-tweet" data-dnt="true" data-theme="${theme}"><a href="${safeURL}"></a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>`,
),
intrinsicSize: { w: 480, h: 480 },
sandbox: { allowSameOrigin },
};
embeddedLinkCache.set(originalLink, ret);
return ret;
}
if (RE_REDDIT.test(link)) {
const [, page, postId, title] = link.match(RE_REDDIT)!;
const safeURL = escapeDoubleQuotes(
`https://reddit.com/r/${page}/comments/${postId}/${title}`,
);
const ret: IframeDataWithSandbox = {
type: "document",
srcdoc: (theme: string) =>
createSrcDoc(
`<blockquote class="reddit-embed-bq" data-embed-theme="${theme}"><a href="${safeURL}"></a><br></blockquote><script async="" src="https://embed.reddit.com/widgets.js" charset="UTF-8"></script>`,
),
intrinsicSize: { w: 480, h: 480 },
sandbox: { allowSameOrigin },
};
embeddedLinkCache.set(originalLink, ret);
return ret;
}
if (RE_GH_GIST.test(link)) {
const [, user, gistId] = link.match(RE_GH_GIST)!;
const safeURL = escapeDoubleQuotes(
`https://gist.github.com/${user}/${gistId}`,
);
const ret: IframeDataWithSandbox = {
type: "document",
srcdoc: () =>
createSrcDoc(`
<script src="${safeURL}.js"></script>
<style type="text/css">
* { margin: 0px; }
table, .gist { height: 100%; }
.gist .gist-file { height: calc(100vh - 2px); padding: 0px; display: grid; grid-template-rows: 1fr auto; }
</style>
`),
intrinsicSize: { w: 550, h: 720 },
sandbox: { allowSameOrigin },
};
embeddedLinkCache.set(link, ret);
return ret;
}
embeddedLinkCache.set(link, {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
});
return {
link,
intrinsicSize: aspectRatio,
type,
sandbox: { allowSameOrigin },
};
};
export const createPlaceholderEmbeddableLabel = (
element: ExcalidrawIframeLikeElement,
): ExcalidrawElement => {
let text: string;
if (isIframeElement(element)) {
text = "IFrame element";
} else {
text =
!element.link || element?.link === "" ? "Empty Web-Embed" : element.link;
}
const fontSize = Math.max(
Math.min(element.width / 2, element.width / text.length),
element.width / 30,
);
const fontFamily = FONT_FAMILY.Helvetica;
const fontString = getFontString({
fontSize,
fontFamily,
});
return newTextElement({
x: element.x + element.width / 2,
y: element.y + element.height / 2,
strokeColor:
element.strokeColor !== "transparent" ? element.strokeColor : "black",
backgroundColor: "transparent",
fontFamily,
fontSize,
text: wrapText(text, fontString, element.width - 20),
textAlign: "center",
verticalAlign: VERTICAL_ALIGN.MIDDLE,
angle: element.angle ?? 0,
});
};
const matchHostname = (
url: string,
/** using a Set assumes it already contains normalized bare domains */
allowedHostnames: Set<string> | string,
): string | null => {
try {
const { hostname } = new URL(url);
const bareDomain = hostname.replace(/^www\./, "");
if (allowedHostnames instanceof Set) {
if (ALLOWED_DOMAINS.has(bareDomain)) {
return bareDomain;
}
const bareDomainWithFirstSubdomainWildcarded = bareDomain.replace(
/^([^.]+)/,
"*",
);
if (ALLOWED_DOMAINS.has(bareDomainWithFirstSubdomainWildcarded)) {
return bareDomainWithFirstSubdomainWildcarded;
}
return null;
}
const bareAllowedHostname = allowedHostnames.replace(/^www\./, "");
if (bareDomain === bareAllowedHostname) {
return bareAllowedHostname;
}
} catch (error) {
// ignore
}
return null;
};
export const maybeParseEmbedSrc = (str: string): string => {
const twitterMatch = str.match(RE_TWITTER_EMBED);
if (twitterMatch && twitterMatch.length === 2) {
return twitterMatch[1];
}
const redditMatch = str.match(RE_REDDIT_EMBED);
if (redditMatch && redditMatch.length === 2) {
return redditMatch[1];
}
const gistMatch = str.match(RE_GH_GIST_EMBED);
if (gistMatch && gistMatch.length === 2) {
return gistMatch[1];
}
if (RE_GIPHY.test(str)) {
return `https://giphy.com/embed/${RE_GIPHY.exec(str)![1]}`;
}
const match = str.match(RE_GENERIC_EMBED);
if (match && match.length === 2) {
return match[1];
}
return str;
};
export const embeddableURLValidator = (
url: string | null | undefined,
validateEmbeddable: ExcalidrawProps["validateEmbeddable"],
): boolean => {
if (!url) {
return false;
}
if (validateEmbeddable != null) {
if (typeof validateEmbeddable === "function") {
const ret = validateEmbeddable(url);
// if return value is undefined, leave validation to default
if (typeof ret === "boolean") {
return ret;
}
} else if (typeof validateEmbeddable === "boolean") {
return validateEmbeddable;
} else if (validateEmbeddable instanceof RegExp) {
return validateEmbeddable.test(url);
} else if (Array.isArray(validateEmbeddable)) {
for (const domain of validateEmbeddable) {
if (domain instanceof RegExp) {
if (url.match(domain)) {
return true;
}
} else if (matchHostname(url, domain)) {
return true;
}
}
return false;
}
}
return !!matchHostname(url, ALLOWED_DOMAINS);
};
+719
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import { KEYS, invariant, toBrandedType } from "@excalidraw/common";
import { type GlobalPoint, pointFrom, type LocalPoint } from "@excalidraw/math";
import type {
AppState,
PendingExcalidrawElements,
} from "@excalidraw/excalidraw/types";
import { bindLinearElement } from "./binding";
import { updateElbowArrowPoints } from "./elbowArrow";
import {
HEADING_DOWN,
HEADING_LEFT,
HEADING_RIGHT,
HEADING_UP,
compareHeading,
headingForPointFromElement,
type Heading,
} from "./heading";
import { LinearElementEditor } from "./linearElementEditor";
import { mutateElement } from "./mutateElement";
import { newArrowElement, newElement } from "./newElement";
import { aabbForElement } from "./bounds";
import { elementsAreInFrameBounds, elementOverlapsWithFrame } from "./frame";
import {
isBindableElement,
isElbowArrow,
isFrameElement,
isFlowchartNodeElement,
} from "./typeChecks";
import {
type ElementsMap,
type ExcalidrawBindableElement,
type ExcalidrawElement,
type ExcalidrawFlowchartNodeElement,
type NonDeletedSceneElementsMap,
type Ordered,
type OrderedExcalidrawElement,
} from "./types";
import type { Scene } from "./Scene";
type LinkDirection = "up" | "right" | "down" | "left";
const VERTICAL_OFFSET = 100;
const HORIZONTAL_OFFSET = 100;
export const getLinkDirectionFromKey = (key: string): LinkDirection => {
switch (key) {
case KEYS.ARROW_UP:
return "up";
case KEYS.ARROW_DOWN:
return "down";
case KEYS.ARROW_RIGHT:
return "right";
case KEYS.ARROW_LEFT:
return "left";
default:
return "right";
}
};
const getNodeRelatives = (
type: "predecessors" | "successors",
node: ExcalidrawBindableElement,
elementsMap: ElementsMap,
direction: LinkDirection,
) => {
const items = [...elementsMap.values()].reduce(
(acc: { relative: ExcalidrawBindableElement; heading: Heading }[], el) => {
let oppositeBinding;
if (
isElbowArrow(el) &&
// we want check existence of the opposite binding, in the direction
// we're interested in
(oppositeBinding =
el[type === "predecessors" ? "startBinding" : "endBinding"]) &&
// similarly, we need to filter only arrows bound to target node
el[type === "predecessors" ? "endBinding" : "startBinding"]
?.elementId === node.id
) {
const relative = elementsMap.get(oppositeBinding.elementId);
if (!relative) {
return acc;
}
invariant(
isBindableElement(relative),
"not an ExcalidrawBindableElement",
);
const edgePoint = (
type === "predecessors" ? el.points[el.points.length - 1] : [0, 0]
) as Readonly<LocalPoint>;
const heading = headingForPointFromElement(
node,
aabbForElement(node, elementsMap),
[edgePoint[0] + el.x, edgePoint[1] + el.y] as Readonly<GlobalPoint>,
);
acc.push({
relative,
heading,
});
}
return acc;
},
[],
);
switch (direction) {
case "up":
return items
.filter((item) => compareHeading(item.heading, HEADING_UP))
.map((item) => item.relative);
case "down":
return items
.filter((item) => compareHeading(item.heading, HEADING_DOWN))
.map((item) => item.relative);
case "right":
return items
.filter((item) => compareHeading(item.heading, HEADING_RIGHT))
.map((item) => item.relative);
case "left":
return items
.filter((item) => compareHeading(item.heading, HEADING_LEFT))
.map((item) => item.relative);
}
};
const getSuccessors = (
node: ExcalidrawBindableElement,
elementsMap: ElementsMap,
direction: LinkDirection,
) => {
return getNodeRelatives("successors", node, elementsMap, direction);
};
export const getPredecessors = (
node: ExcalidrawBindableElement,
elementsMap: ElementsMap,
direction: LinkDirection,
) => {
return getNodeRelatives("predecessors", node, elementsMap, direction);
};
const getOffsets = (
element: ExcalidrawFlowchartNodeElement,
linkedNodes: ExcalidrawElement[],
direction: LinkDirection,
) => {
const _HORIZONTAL_OFFSET = HORIZONTAL_OFFSET + element.width;
// check if vertical space or horizontal space is available first
if (direction === "up" || direction === "down") {
const _VERTICAL_OFFSET = VERTICAL_OFFSET + element.height;
// check vertical space
const minX = element.x;
const maxX = element.x + element.width;
// vertical space is available
if (
linkedNodes.every(
(linkedNode) =>
linkedNode.x + linkedNode.width < minX || linkedNode.x > maxX,
)
) {
return {
x: 0,
y: _VERTICAL_OFFSET * (direction === "up" ? -1 : 1),
};
}
} else if (direction === "right" || direction === "left") {
const minY = element.y;
const maxY = element.y + element.height;
if (
linkedNodes.every(
(linkedNode) =>
linkedNode.y + linkedNode.height < minY || linkedNode.y > maxY,
)
) {
return {
x:
(HORIZONTAL_OFFSET + element.width) * (direction === "left" ? -1 : 1),
y: 0,
};
}
}
if (direction === "up" || direction === "down") {
const _VERTICAL_OFFSET = VERTICAL_OFFSET + element.height;
const y = linkedNodes.length === 0 ? _VERTICAL_OFFSET : _VERTICAL_OFFSET;
const x =
linkedNodes.length === 0
? 0
: (linkedNodes.length + 1) % 2 === 0
? ((linkedNodes.length + 1) / 2) * _HORIZONTAL_OFFSET
: (linkedNodes.length / 2) * _HORIZONTAL_OFFSET * -1;
if (direction === "up") {
return {
x,
y: y * -1,
};
}
return {
x,
y,
};
}
const _VERTICAL_OFFSET = VERTICAL_OFFSET + element.height;
const x =
(linkedNodes.length === 0 ? HORIZONTAL_OFFSET : HORIZONTAL_OFFSET) +
element.width;
const y =
linkedNodes.length === 0
? 0
: (linkedNodes.length + 1) % 2 === 0
? ((linkedNodes.length + 1) / 2) * _VERTICAL_OFFSET
: (linkedNodes.length / 2) * _VERTICAL_OFFSET * -1;
if (direction === "left") {
return {
x: x * -1,
y,
};
}
return {
x,
y,
};
};
const addNewNode = (
element: ExcalidrawFlowchartNodeElement,
appState: AppState,
direction: LinkDirection,
scene: Scene,
) => {
const elementsMap = scene.getNonDeletedElementsMap();
const successors = getSuccessors(element, elementsMap, direction);
const predeccessors = getPredecessors(element, elementsMap, direction);
const offsets = getOffsets(
element,
[...successors, ...predeccessors],
direction,
);
const nextNode = newElement({
type: element.type,
x: element.x + offsets.x,
y: element.y + offsets.y,
// TODO: extract this to a util
width: element.width,
height: element.height,
roundness: element.roundness,
roughness: element.roughness,
backgroundColor: element.backgroundColor,
strokeColor: element.strokeColor,
strokeWidth: element.strokeWidth,
opacity: element.opacity,
fillStyle: element.fillStyle,
strokeStyle: element.strokeStyle,
});
invariant(
isFlowchartNodeElement(nextNode),
"not an ExcalidrawFlowchartNodeElement",
);
const bindingArrow = createBindingArrow(
element,
nextNode,
direction,
appState,
scene,
);
return {
nextNode,
bindingArrow,
};
};
export const addNewNodes = (
startNode: ExcalidrawFlowchartNodeElement,
appState: AppState,
direction: LinkDirection,
scene: Scene,
numberOfNodes: number,
) => {
// always start from 0 and distribute evenly
const newNodes: ExcalidrawElement[] = [];
for (let i = 0; i < numberOfNodes; i++) {
let nextX: number;
let nextY: number;
if (direction === "left" || direction === "right") {
const totalHeight =
VERTICAL_OFFSET * (numberOfNodes - 1) +
numberOfNodes * startNode.height;
const startY = startNode.y + startNode.height / 2 - totalHeight / 2;
let offsetX = HORIZONTAL_OFFSET + startNode.width;
if (direction === "left") {
offsetX *= -1;
}
nextX = startNode.x + offsetX;
const offsetY = (VERTICAL_OFFSET + startNode.height) * i;
nextY = startY + offsetY;
} else {
const totalWidth =
HORIZONTAL_OFFSET * (numberOfNodes - 1) +
numberOfNodes * startNode.width;
const startX = startNode.x + startNode.width / 2 - totalWidth / 2;
let offsetY = VERTICAL_OFFSET + startNode.height;
if (direction === "up") {
offsetY *= -1;
}
nextY = startNode.y + offsetY;
const offsetX = (HORIZONTAL_OFFSET + startNode.width) * i;
nextX = startX + offsetX;
}
const nextNode = newElement({
type: startNode.type,
x: nextX,
y: nextY,
// TODO: extract this to a util
width: startNode.width,
height: startNode.height,
roundness: startNode.roundness,
roughness: startNode.roughness,
backgroundColor: startNode.backgroundColor,
strokeColor: startNode.strokeColor,
strokeWidth: startNode.strokeWidth,
opacity: startNode.opacity,
fillStyle: startNode.fillStyle,
strokeStyle: startNode.strokeStyle,
});
invariant(
isFlowchartNodeElement(nextNode),
"not an ExcalidrawFlowchartNodeElement",
);
const bindingArrow = createBindingArrow(
startNode,
nextNode,
direction,
appState,
scene,
);
newNodes.push(nextNode);
newNodes.push(bindingArrow);
}
return newNodes;
};
const createBindingArrow = (
startBindingElement: ExcalidrawFlowchartNodeElement,
endBindingElement: ExcalidrawFlowchartNodeElement,
direction: LinkDirection,
appState: AppState,
scene: Scene,
) => {
let startX: number;
let startY: number;
const PADDING = 6;
switch (direction) {
case "up": {
startX = startBindingElement.x + startBindingElement.width / 2;
startY = startBindingElement.y - PADDING;
break;
}
case "down": {
startX = startBindingElement.x + startBindingElement.width / 2;
startY = startBindingElement.y + startBindingElement.height + PADDING;
break;
}
case "right": {
startX = startBindingElement.x + startBindingElement.width + PADDING;
startY = startBindingElement.y + startBindingElement.height / 2;
break;
}
case "left": {
startX = startBindingElement.x - PADDING;
startY = startBindingElement.y + startBindingElement.height / 2;
break;
}
}
let endX: number;
let endY: number;
switch (direction) {
case "up": {
endX = endBindingElement.x + endBindingElement.width / 2 - startX;
endY = endBindingElement.y + endBindingElement.height - startY + PADDING;
break;
}
case "down": {
endX = endBindingElement.x + endBindingElement.width / 2 - startX;
endY = endBindingElement.y - startY - PADDING;
break;
}
case "right": {
endX = endBindingElement.x - startX - PADDING;
endY = endBindingElement.y - startY + endBindingElement.height / 2;
break;
}
case "left": {
endX = endBindingElement.x + endBindingElement.width - startX + PADDING;
endY = endBindingElement.y - startY + endBindingElement.height / 2;
break;
}
}
const bindingArrow = newArrowElement({
type: "arrow",
x: startX,
y: startY,
startArrowhead: null,
endArrowhead: appState.currentItemEndArrowhead,
strokeColor: startBindingElement.strokeColor,
strokeStyle: startBindingElement.strokeStyle,
strokeWidth: startBindingElement.strokeWidth,
opacity: startBindingElement.opacity,
roughness: startBindingElement.roughness,
points: [pointFrom(0, 0), pointFrom(endX, endY)],
elbowed: true,
});
const elementsMap = scene.getNonDeletedElementsMap();
bindLinearElement(bindingArrow, startBindingElement, "start", scene);
bindLinearElement(bindingArrow, endBindingElement, "end", scene);
const changedElements = new Map<string, OrderedExcalidrawElement>();
changedElements.set(
startBindingElement.id,
startBindingElement as OrderedExcalidrawElement,
);
changedElements.set(
endBindingElement.id,
endBindingElement as OrderedExcalidrawElement,
);
changedElements.set(
bindingArrow.id,
bindingArrow as OrderedExcalidrawElement,
);
LinearElementEditor.movePoints(
bindingArrow,
scene,
new Map([
[
1,
{
point: bindingArrow.points[1],
},
],
]),
);
const update = updateElbowArrowPoints(
bindingArrow,
toBrandedType<NonDeletedSceneElementsMap>(
new Map([
...elementsMap.entries(),
[startBindingElement.id, startBindingElement],
[endBindingElement.id, endBindingElement],
[bindingArrow.id, bindingArrow],
] as [string, Ordered<ExcalidrawElement>][]),
),
{ points: bindingArrow.points },
);
return {
...bindingArrow,
...update,
};
};
export class FlowChartNavigator {
isExploring: boolean = false;
// nodes that are ONE link away (successor and predecessor both included)
private sameLevelNodes: ExcalidrawElement[] = [];
private sameLevelIndex: number = 0;
// set it to the opposite of the defalut creation direction
private direction: LinkDirection | null = null;
// for speedier navigation
private visitedNodes: Set<ExcalidrawElement["id"]> = new Set();
clear() {
this.isExploring = false;
this.sameLevelNodes = [];
this.sameLevelIndex = 0;
this.direction = null;
this.visitedNodes.clear();
}
exploreByDirection(
element: ExcalidrawElement,
elementsMap: ElementsMap,
direction: LinkDirection,
): ExcalidrawElement["id"] | null {
if (!isBindableElement(element)) {
return null;
}
// clear if going at a different direction
if (direction !== this.direction) {
this.clear();
}
// add the current node to the visited
if (!this.visitedNodes.has(element.id)) {
this.visitedNodes.add(element.id);
}
/**
* CASE:
* - already started exploring, AND
* - there are multiple nodes at the same level, AND
* - still going at the same direction, AND
*
* RESULT:
* - loop through nodes at the same level
*
* WHY:
* - provides user the capability to loop through nodes at the same level
*/
if (
this.isExploring &&
direction === this.direction &&
this.sameLevelNodes.length > 1
) {
this.sameLevelIndex =
(this.sameLevelIndex + 1) % this.sameLevelNodes.length;
return this.sameLevelNodes[this.sameLevelIndex].id;
}
const nodes = [
...getSuccessors(element, elementsMap, direction),
...getPredecessors(element, elementsMap, direction),
];
/**
* CASE:
* - just started exploring at the given direction
*
* RESULT:
* - go to the first node in the given direction
*/
if (nodes.length > 0) {
this.sameLevelIndex = 0;
this.isExploring = true;
this.sameLevelNodes = nodes;
this.direction = direction;
this.visitedNodes.add(nodes[0].id);
return nodes[0].id;
}
/**
* CASE:
* - (just started exploring or still going at the same direction) OR
* - there're no nodes at the given direction
*
* RESULT:
* - go to some other unvisited linked node
*
* WHY:
* - provide a speedier navigation from a given node to some predecessor
* without the user having to change arrow key
*/
if (direction === this.direction || !this.isExploring) {
if (!this.isExploring) {
// just started and no other nodes at the given direction
// so the current node is technically the first visited node
// (this is needed so that we don't get stuck between looping through )
this.visitedNodes.add(element.id);
}
const otherDirections: LinkDirection[] = [
"up",
"right",
"down",
"left",
].filter((dir): dir is LinkDirection => dir !== direction);
const otherLinkedNodes = otherDirections
.map((dir) => [
...getSuccessors(element, elementsMap, dir),
...getPredecessors(element, elementsMap, dir),
])
.flat()
.filter((linkedNode) => !this.visitedNodes.has(linkedNode.id));
for (const linkedNode of otherLinkedNodes) {
if (!this.visitedNodes.has(linkedNode.id)) {
this.visitedNodes.add(linkedNode.id);
this.isExploring = true;
this.direction = direction;
return linkedNode.id;
}
}
}
return null;
}
}
export class FlowChartCreator {
isCreatingChart: boolean = false;
private numberOfNodes: number = 0;
private direction: LinkDirection | null = "right";
pendingNodes: PendingExcalidrawElements | null = null;
createNodes(
startNode: ExcalidrawFlowchartNodeElement,
appState: AppState,
direction: LinkDirection,
scene: Scene,
) {
const elementsMap = scene.getNonDeletedElementsMap();
if (direction !== this.direction) {
const { nextNode, bindingArrow } = addNewNode(
startNode,
appState,
direction,
scene,
);
this.numberOfNodes = 1;
this.isCreatingChart = true;
this.direction = direction;
this.pendingNodes = [nextNode, bindingArrow];
} else {
this.numberOfNodes += 1;
const newNodes = addNewNodes(
startNode,
appState,
direction,
scene,
this.numberOfNodes,
);
this.isCreatingChart = true;
this.direction = direction;
this.pendingNodes = newNodes;
}
// add pending nodes to the same frame as the start node
// if every pending node is at least intersecting with the frame
if (startNode.frameId) {
const frame = elementsMap.get(startNode.frameId);
invariant(
frame && isFrameElement(frame),
"not an ExcalidrawFrameElement",
);
if (
frame &&
this.pendingNodes.every(
(node) =>
elementsAreInFrameBounds([node], frame, elementsMap) ||
elementOverlapsWithFrame(node, frame, elementsMap),
)
) {
this.pendingNodes = this.pendingNodes.map((node) =>
mutateElement(node, elementsMap, {
frameId: startNode.frameId,
}),
);
}
}
}
clear() {
this.isCreatingChart = false;
this.pendingNodes = null;
this.direction = null;
this.numberOfNodes = 0;
}
}
export const isNodeInFlowchart = (
element: ExcalidrawFlowchartNodeElement,
elementsMap: ElementsMap,
) => {
for (const [, el] of elementsMap) {
if (
el.type === "arrow" &&
(el.startBinding?.elementId === element.id ||
el.endBinding?.elementId === element.id)
) {
return true;
}
}
return false;
};
+446
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@@ -0,0 +1,446 @@
import { generateNKeysBetween } from "fractional-indexing";
import { arrayToMap } from "@excalidraw/common";
import { mutateElement, newElementWith } from "./mutateElement";
import { getBoundTextElement } from "./textElement";
import { hasBoundTextElement } from "./typeChecks";
import type {
ElementsMap,
ExcalidrawElement,
FractionalIndex,
OrderedExcalidrawElement,
SceneElementsMap,
} from "./types";
export class InvalidFractionalIndexError extends Error {
public code = "ELEMENT_HAS_INVALID_INDEX" as const;
}
/**
* Envisioned relation between array order and fractional indices:
*
* 1) Array (or array-like ordered data structure) should be used as a cache of elements order, hiding the internal fractional indices implementation.
* - it's undesirable to perform reorder for each related operation, therefore it's necessary to cache the order defined by fractional indices into an ordered data structure
* - it's easy enough to define the order of the elements from the outside (boundaries), without worrying about the underlying structure of fractional indices (especially for the host apps)
* - it's necessary to always keep the array support for backwards compatibility (restore) - old scenes, old libraries, supporting multiple excalidraw versions etc.
* - it's necessary to always keep the fractional indices in sync with the array order
* - elements with invalid indices should be detected and synced, without altering the already valid indices
*
* 2) Fractional indices should be used to reorder the elements, whenever the cached order is expected to be invalidated.
* - as the fractional indices are encoded as part of the elements, it opens up possibilities for incremental-like APIs
* - re-order based on fractional indices should be part of (multiplayer) operations such as reconciliation & undo/redo
* - technically all the z-index actions could perform also re-order based on fractional indices,but in current state it would not bring much benefits,
* as it's faster & more efficient to perform re-order based on array manipulation and later synchronisation of moved indices with the array order
*/
/**
* Ensure that all elements have valid fractional indices.
*
* @throws `InvalidFractionalIndexError` if invalid index is detected.
*/
export const validateFractionalIndices = (
elements: readonly ExcalidrawElement[],
{
shouldThrow = false,
includeBoundTextValidation = false,
ignoreLogs,
reconciliationContext,
}: {
shouldThrow: boolean;
includeBoundTextValidation: boolean;
ignoreLogs?: true;
reconciliationContext?: {
localElements: ReadonlyArray<ExcalidrawElement>;
remoteElements: ReadonlyArray<ExcalidrawElement>;
};
},
) => {
const errorMessages = [];
const stringifyElement = (element: ExcalidrawElement | void) =>
`${element?.index}:${element?.id}:${element?.type}:${element?.isDeleted}:${element?.version}:${element?.versionNonce}`;
const indices = elements.map((x) => x.index);
for (const [i, index] of indices.entries()) {
const predecessorIndex = indices[i - 1];
const successorIndex = indices[i + 1];
if (!isValidFractionalIndex(index, predecessorIndex, successorIndex)) {
errorMessages.push(
`Fractional indices invariant has been compromised: "${stringifyElement(
elements[i - 1],
)}", "${stringifyElement(elements[i])}", "${stringifyElement(
elements[i + 1],
)}"`,
);
}
// disabled by default, as we don't fix it
if (includeBoundTextValidation && hasBoundTextElement(elements[i])) {
const container = elements[i];
const text = getBoundTextElement(container, arrayToMap(elements));
if (text && text.index! <= container.index!) {
errorMessages.push(
`Fractional indices invariant for bound elements has been compromised: "${stringifyElement(
text,
)}", "${stringifyElement(container)}"`,
);
}
}
}
if (errorMessages.length) {
const error = new InvalidFractionalIndexError();
const additionalContext = [];
if (reconciliationContext) {
additionalContext.push("Additional reconciliation context:");
additionalContext.push(
reconciliationContext.localElements.map((x) => stringifyElement(x)),
);
additionalContext.push(
reconciliationContext.remoteElements.map((x) => stringifyElement(x)),
);
}
if (!ignoreLogs) {
// report just once and with the stacktrace
console.error(
errorMessages.join("\n\n"),
error.stack,
elements.map((x) => stringifyElement(x)),
...additionalContext,
);
}
if (shouldThrow) {
// if enabled, gather all the errors first, throw once
throw error;
}
}
};
/**
* Order the elements based on the fractional indices.
* - when fractional indices are identical, break the tie based on the element id
* - when there is no fractional index in one of the elements, respect the order of the array
*/
export const orderByFractionalIndex = (
elements: OrderedExcalidrawElement[],
) => {
return elements.sort((a, b) => {
// in case the indices are not the defined at runtime
if (isOrderedElement(a) && isOrderedElement(b)) {
if (a.index < b.index) {
return -1;
} else if (a.index > b.index) {
return 1;
}
// break ties based on the element id
return a.id < b.id ? -1 : 1;
}
// defensively keep the array order
return 1;
});
};
/**
* Synchronizes invalid fractional indices of moved elements with the array order by mutating passed elements.
* If the synchronization fails or the result is invalid, it fallbacks to `syncInvalidIndices`.
*/
export const syncMovedIndices = (
elements: readonly ExcalidrawElement[],
movedElements: ElementsMap,
): OrderedExcalidrawElement[] => {
try {
const elementsMap = arrayToMap(elements);
const indicesGroups = getMovedIndicesGroups(elements, movedElements);
// try generatating indices, throws on invalid movedElements
const elementsUpdates = generateIndices(elements, indicesGroups);
const elementsCandidates = elements.map((x) => {
const elementUpdates = elementsUpdates.get(x);
if (elementUpdates) {
return { ...x, index: elementUpdates.index };
}
return x;
});
// ensure next indices are valid before mutation, throws on invalid ones
validateFractionalIndices(
elementsCandidates,
// we don't autofix invalid bound text indices, hence don't include it in the validation
{
includeBoundTextValidation: false,
shouldThrow: true,
ignoreLogs: true,
},
);
// split mutation so we don't end up in an incosistent state
for (const [element, { index }] of elementsUpdates) {
mutateElement(element, elementsMap, { index });
}
} catch (e) {
// fallback to default sync
syncInvalidIndices(elements);
}
return elements as OrderedExcalidrawElement[];
};
/**
* Synchronizes all invalid fractional indices within the array order by mutating elements in the passed array.
*
* WARN: in edge cases it could modify the elements which were not moved, as it's impossible to guess the actually moved elements from the elements array itself.
*/
export const syncInvalidIndices = (
elements: readonly ExcalidrawElement[],
): OrderedExcalidrawElement[] => {
const elementsMap = arrayToMap(elements);
const indicesGroups = getInvalidIndicesGroups(elements);
const elementsUpdates = generateIndices(elements, indicesGroups);
for (const [element, { index }] of elementsUpdates) {
mutateElement(element, elementsMap, { index });
}
return elements as OrderedExcalidrawElement[];
};
/**
* Synchronizes all invalid fractional indices within the array order by creating new instances of elements with corrected indices.
*
* WARN: in edge cases it could modify the elements which were not moved, as it's impossible to guess the actually moved elements from the elements array itself.
*/
export const syncInvalidIndicesImmutable = (
elements: readonly ExcalidrawElement[],
): SceneElementsMap | undefined => {
const syncedElements = arrayToMap(elements);
const indicesGroups = getInvalidIndicesGroups(elements);
const elementsUpdates = generateIndices(elements, indicesGroups);
for (const [element, { index }] of elementsUpdates) {
syncedElements.set(element.id, newElementWith(element, { index }));
}
return syncedElements as SceneElementsMap;
};
/**
* Get contiguous groups of indices of passed moved elements.
*
* NOTE: First and last elements within the groups are indices of lower and upper bounds.
*/
const getMovedIndicesGroups = (
elements: readonly ExcalidrawElement[],
movedElements: ElementsMap,
) => {
const indicesGroups: number[][] = [];
let i = 0;
while (i < elements.length) {
if (movedElements.has(elements[i].id)) {
const indicesGroup = [i - 1, i]; // push the lower bound index as the first item
while (++i < elements.length) {
if (!movedElements.has(elements[i].id)) {
break;
}
indicesGroup.push(i);
}
indicesGroup.push(i); // push the upper bound index as the last item
indicesGroups.push(indicesGroup);
} else {
i++;
}
}
return indicesGroups;
};
/**
* Gets contiguous groups of all invalid indices automatically detected inside the elements array.
*
* WARN: First and last items within the groups do NOT have to be contiguous, those are the found lower and upper bounds!
*/
const getInvalidIndicesGroups = (elements: readonly ExcalidrawElement[]) => {
const indicesGroups: number[][] = [];
// once we find lowerBound / upperBound, it cannot be lower than that, so we cache it for better perf.
let lowerBound: ExcalidrawElement["index"] | undefined = undefined;
let upperBound: ExcalidrawElement["index"] | undefined = undefined;
let lowerBoundIndex: number = -1;
let upperBoundIndex: number = 0;
/** @returns maybe valid lowerBound */
const getLowerBound = (
index: number,
): [ExcalidrawElement["index"] | undefined, number] => {
const lowerBound = elements[lowerBoundIndex]
? elements[lowerBoundIndex].index
: undefined;
// we are already iterating left to right, therefore there is no need for additional looping
const candidate = elements[index - 1]?.index;
if (
(!lowerBound && candidate) || // first lowerBound
(lowerBound && candidate && candidate > lowerBound) // next lowerBound
) {
// WARN: candidate's index could be higher or same as the current element's index
return [candidate, index - 1];
}
// cache hit! take the last lower bound
return [lowerBound, lowerBoundIndex];
};
/** @returns always valid upperBound */
const getUpperBound = (
index: number,
): [ExcalidrawElement["index"] | undefined, number] => {
const upperBound = elements[upperBoundIndex]
? elements[upperBoundIndex].index
: undefined;
// cache hit! don't let it find the upper bound again
if (upperBound && index < upperBoundIndex) {
return [upperBound, upperBoundIndex];
}
// set the current upperBoundIndex as the starting point
let i = upperBoundIndex;
while (++i < elements.length) {
const candidate = elements[i]?.index;
if (
(!upperBound && candidate) || // first upperBound
(upperBound && candidate && candidate > upperBound) // next upperBound
) {
return [candidate, i];
}
}
// we reached the end, sky is the limit
return [undefined, i];
};
let i = 0;
while (i < elements.length) {
const current = elements[i].index;
[lowerBound, lowerBoundIndex] = getLowerBound(i);
[upperBound, upperBoundIndex] = getUpperBound(i);
if (!isValidFractionalIndex(current, lowerBound, upperBound)) {
// push the lower bound index as the first item
const indicesGroup = [lowerBoundIndex, i];
while (++i < elements.length) {
const current = elements[i].index;
const [nextLowerBound, nextLowerBoundIndex] = getLowerBound(i);
const [nextUpperBound, nextUpperBoundIndex] = getUpperBound(i);
if (isValidFractionalIndex(current, nextLowerBound, nextUpperBound)) {
break;
}
// assign bounds only for the moved elements
[lowerBound, lowerBoundIndex] = [nextLowerBound, nextLowerBoundIndex];
[upperBound, upperBoundIndex] = [nextUpperBound, nextUpperBoundIndex];
indicesGroup.push(i);
}
// push the upper bound index as the last item
indicesGroup.push(upperBoundIndex);
indicesGroups.push(indicesGroup);
} else {
i++;
}
}
return indicesGroups;
};
const isValidFractionalIndex = (
index: ExcalidrawElement["index"] | undefined,
predecessor: ExcalidrawElement["index"] | undefined,
successor: ExcalidrawElement["index"] | undefined,
) => {
if (!index) {
return false;
}
if (predecessor && successor) {
return predecessor < index && index < successor;
}
if (!predecessor && successor) {
// first element
return index < successor;
}
if (predecessor && !successor) {
// last element
return predecessor < index;
}
// only element in the array
return !!index;
};
const generateIndices = (
elements: readonly ExcalidrawElement[],
indicesGroups: number[][],
) => {
const elementsUpdates = new Map<
ExcalidrawElement,
{ index: FractionalIndex }
>();
for (const indices of indicesGroups) {
const lowerBoundIndex = indices.shift()!;
const upperBoundIndex = indices.pop()!;
const fractionalIndices = generateNKeysBetween(
elements[lowerBoundIndex]?.index,
elements[upperBoundIndex]?.index,
indices.length,
) as FractionalIndex[];
for (let i = 0; i < indices.length; i++) {
const element = elements[indices[i]];
elementsUpdates.set(element, {
index: fractionalIndices[i],
});
}
}
return elementsUpdates;
};
const isOrderedElement = (
element: ExcalidrawElement,
): element is OrderedExcalidrawElement => {
// for now it's sufficient whether the index is there
// meaning, the element was already ordered in the past
// meaning, it is not a newly inserted element, not an unrestored element, etc.
// it does not have to mean that the index itself is valid
if (element.index) {
return true;
}
return false;
};
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import { arrayToMap } from "@excalidraw/common";
import { isPointWithinBounds, pointFrom } from "@excalidraw/math";
import { doLineSegmentsIntersect } from "@excalidraw/utils/bbox";
import { elementsOverlappingBBox } from "@excalidraw/utils/withinBounds";
import type {
AppClassProperties,
AppState,
StaticCanvasAppState,
} from "@excalidraw/excalidraw/types";
import type { ReadonlySetLike } from "@excalidraw/common/utility-types";
import { getElementsWithinSelection, getSelectedElements } from "./selection";
import { getElementsInGroup, selectGroupsFromGivenElements } from "./groups";
import {
getElementLineSegments,
getCommonBounds,
getElementAbsoluteCoords,
} from "./bounds";
import { mutateElement } from "./mutateElement";
import { getBoundTextElement, getContainerElement } from "./textElement";
import {
isFrameElement,
isFrameLikeElement,
isTextElement,
} from "./typeChecks";
import type { ExcalidrawElementsIncludingDeleted } from "./Scene";
import type {
ElementsMap,
ElementsMapOrArray,
ExcalidrawElement,
ExcalidrawFrameLikeElement,
NonDeleted,
NonDeletedExcalidrawElement,
} from "./types";
// --------------------------- Frame State ------------------------------------
export const bindElementsToFramesAfterDuplication = (
nextElements: readonly ExcalidrawElement[],
origElements: readonly ExcalidrawElement[],
origIdToDuplicateId: Map<ExcalidrawElement["id"], ExcalidrawElement["id"]>,
) => {
const nextElementMap = arrayToMap(nextElements) as Map<
ExcalidrawElement["id"],
ExcalidrawElement
>;
for (const element of origElements) {
if (element.frameId) {
// use its frameId to get the new frameId
const nextElementId = origIdToDuplicateId.get(element.id);
const nextFrameId = origIdToDuplicateId.get(element.frameId);
const nextElement = nextElementId && nextElementMap.get(nextElementId);
if (nextElement) {
mutateElement(nextElement, nextElementMap, {
frameId: nextFrameId ?? null,
});
}
}
}
};
export function isElementIntersectingFrame(
element: ExcalidrawElement,
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) {
const frameLineSegments = getElementLineSegments(frame, elementsMap);
const elementLineSegments = getElementLineSegments(element, elementsMap);
const intersecting = frameLineSegments.some((frameLineSegment) =>
elementLineSegments.some((elementLineSegment) =>
doLineSegmentsIntersect(frameLineSegment, elementLineSegment),
),
);
return intersecting;
}
export const getElementsCompletelyInFrame = (
elements: readonly ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) =>
omitGroupsContainingFrameLikes(
getElementsWithinSelection(elements, frame, elementsMap, false),
).filter(
(element) =>
(!isFrameLikeElement(element) && !element.frameId) ||
element.frameId === frame.id,
);
export const isElementContainingFrame = (
element: ExcalidrawElement,
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) => {
return getElementsWithinSelection([frame], element, elementsMap).some(
(e) => e.id === frame.id,
);
};
export const getElementsIntersectingFrame = (
elements: readonly ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
) => {
const elementsMap = arrayToMap(elements);
return elements.filter((element) =>
isElementIntersectingFrame(element, frame, elementsMap),
);
};
export const elementsAreInFrameBounds = (
elements: readonly ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) => {
const [frameX1, frameY1, frameX2, frameY2] = getElementAbsoluteCoords(
frame,
elementsMap,
);
const [elementX1, elementY1, elementX2, elementY2] =
getCommonBounds(elements);
return (
frameX1 <= elementX1 &&
frameY1 <= elementY1 &&
frameX2 >= elementX2 &&
frameY2 >= elementY2
);
};
export const elementOverlapsWithFrame = (
element: ExcalidrawElement,
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) => {
return (
elementsAreInFrameBounds([element], frame, elementsMap) ||
isElementIntersectingFrame(element, frame, elementsMap) ||
isElementContainingFrame(element, frame, elementsMap)
);
};
export const isCursorInFrame = (
cursorCoords: {
x: number;
y: number;
},
frame: NonDeleted<ExcalidrawFrameLikeElement>,
elementsMap: ElementsMap,
) => {
const [fx1, fy1, fx2, fy2] = getElementAbsoluteCoords(frame, elementsMap);
return isPointWithinBounds(
pointFrom(fx1, fy1),
pointFrom(cursorCoords.x, cursorCoords.y),
pointFrom(fx2, fy2),
);
};
export const groupsAreAtLeastIntersectingTheFrame = (
elements: readonly NonDeletedExcalidrawElement[],
groupIds: readonly string[],
frame: ExcalidrawFrameLikeElement,
) => {
const elementsMap = arrayToMap(elements);
const elementsInGroup = groupIds.flatMap((groupId) =>
getElementsInGroup(elements, groupId),
);
if (elementsInGroup.length === 0) {
return true;
}
return !!elementsInGroup.find(
(element) =>
elementsAreInFrameBounds([element], frame, elementsMap) ||
isElementIntersectingFrame(element, frame, elementsMap),
);
};
export const groupsAreCompletelyOutOfFrame = (
elements: readonly NonDeletedExcalidrawElement[],
groupIds: readonly string[],
frame: ExcalidrawFrameLikeElement,
) => {
const elementsMap = arrayToMap(elements);
const elementsInGroup = groupIds.flatMap((groupId) =>
getElementsInGroup(elements, groupId),
);
if (elementsInGroup.length === 0) {
return true;
}
return (
elementsInGroup.find(
(element) =>
elementsAreInFrameBounds([element], frame, elementsMap) ||
isElementIntersectingFrame(element, frame, elementsMap),
) === undefined
);
};
// --------------------------- Frame Utils ------------------------------------
/**
* Returns a map of frameId to frame elements. Includes empty frames.
*/
export const groupByFrameLikes = (elements: readonly ExcalidrawElement[]) => {
const frameElementsMap = new Map<
ExcalidrawElement["id"],
ExcalidrawElement[]
>();
for (const element of elements) {
const frameId = isFrameLikeElement(element) ? element.id : element.frameId;
if (frameId && !frameElementsMap.has(frameId)) {
frameElementsMap.set(frameId, getFrameChildren(elements, frameId));
}
}
return frameElementsMap;
};
export const getFrameChildren = (
allElements: ElementsMapOrArray,
frameId: string,
) => {
const frameChildren: ExcalidrawElement[] = [];
for (const element of allElements.values()) {
if (element.frameId === frameId) {
frameChildren.push(element);
}
}
return frameChildren;
};
export const getFrameLikeElements = (
allElements: ExcalidrawElementsIncludingDeleted,
): ExcalidrawFrameLikeElement[] => {
return allElements.filter((element): element is ExcalidrawFrameLikeElement =>
isFrameLikeElement(element),
);
};
/**
* Returns ExcalidrawFrameElements and non-frame-children elements.
*
* Considers children as root elements if they point to a frame parent
* non-existing in the elements set.
*
* Considers non-frame bound elements (container or arrow labels) as root.
*/
export const getRootElements = (
allElements: ExcalidrawElementsIncludingDeleted,
) => {
const frameElements = arrayToMap(getFrameLikeElements(allElements));
return allElements.filter(
(element) =>
frameElements.has(element.id) ||
!element.frameId ||
!frameElements.has(element.frameId),
);
};
export const getElementsInResizingFrame = (
allElements: ExcalidrawElementsIncludingDeleted,
frame: ExcalidrawFrameLikeElement,
appState: AppState,
elementsMap: ElementsMap,
): ExcalidrawElement[] => {
const prevElementsInFrame = getFrameChildren(allElements, frame.id);
const nextElementsInFrame = new Set<ExcalidrawElement>(prevElementsInFrame);
const elementsCompletelyInFrame = new Set([
...getElementsCompletelyInFrame(allElements, frame, elementsMap),
...prevElementsInFrame.filter((element) =>
isElementContainingFrame(element, frame, elementsMap),
),
]);
const elementsNotCompletelyInFrame = prevElementsInFrame.filter(
(element) => !elementsCompletelyInFrame.has(element),
);
// for elements that are completely in the frame
// if they are part of some groups, then those groups are still
// considered to belong to the frame
const groupsToKeep = new Set<string>(
Array.from(elementsCompletelyInFrame).flatMap(
(element) => element.groupIds,
),
);
for (const element of elementsNotCompletelyInFrame) {
if (!isElementIntersectingFrame(element, frame, elementsMap)) {
if (element.groupIds.length === 0) {
nextElementsInFrame.delete(element);
}
} else if (element.groupIds.length > 0) {
// group element intersects with the frame, we should keep the groups
// that this element is part of
for (const id of element.groupIds) {
groupsToKeep.add(id);
}
}
}
for (const element of elementsNotCompletelyInFrame) {
if (element.groupIds.length > 0) {
let shouldRemoveElement = true;
for (const id of element.groupIds) {
if (groupsToKeep.has(id)) {
shouldRemoveElement = false;
}
}
if (shouldRemoveElement) {
nextElementsInFrame.delete(element);
}
}
}
const individualElementsCompletelyInFrame = Array.from(
elementsCompletelyInFrame,
).filter((element) => element.groupIds.length === 0);
for (const element of individualElementsCompletelyInFrame) {
nextElementsInFrame.add(element);
}
const newGroupElementsCompletelyInFrame = Array.from(
elementsCompletelyInFrame,
).filter((element) => element.groupIds.length > 0);
const groupIds = selectGroupsFromGivenElements(
newGroupElementsCompletelyInFrame,
appState,
);
// new group elements
for (const [id, isSelected] of Object.entries(groupIds)) {
if (isSelected) {
const elementsInGroup = getElementsInGroup(allElements, id);
if (elementsAreInFrameBounds(elementsInGroup, frame, elementsMap)) {
for (const element of elementsInGroup) {
nextElementsInFrame.add(element);
}
}
}
}
return [...nextElementsInFrame].filter((element) => {
return !(isTextElement(element) && element.containerId);
});
};
export const getElementsInNewFrame = (
elements: ExcalidrawElementsIncludingDeleted,
frame: ExcalidrawFrameLikeElement,
elementsMap: ElementsMap,
) => {
return omitPartialGroups(
omitGroupsContainingFrameLikes(
elements,
getElementsCompletelyInFrame(elements, frame, elementsMap),
),
frame,
elementsMap,
);
};
export const omitPartialGroups = (
elements: ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
allElementsMap: ElementsMap,
) => {
const elementsToReturn = [];
const checkedGroups = new Map<string, boolean>();
for (const element of elements) {
let shouldOmit = false;
if (element.groupIds.length > 0) {
// if some partial group should be omitted, then all elements in that group should be omitted
if (element.groupIds.some((gid) => checkedGroups.get(gid))) {
shouldOmit = true;
} else {
const allElementsInGroup = new Set(
element.groupIds.flatMap((gid) =>
getElementsInGroup(allElementsMap, gid),
),
);
shouldOmit = !elementsAreInFrameBounds(
Array.from(allElementsInGroup),
frame,
allElementsMap,
);
}
element.groupIds.forEach((gid) => {
checkedGroups.set(gid, shouldOmit);
});
}
if (!shouldOmit) {
elementsToReturn.push(element);
}
}
return elementsToReturn;
};
export const getContainingFrame = (
element: ExcalidrawElement,
elementsMap: ElementsMap,
) => {
if (!element.frameId) {
return null;
}
return (elementsMap.get(element.frameId) ||
null) as null | ExcalidrawFrameLikeElement;
};
// --------------------------- Frame Operations -------------------------------
/** */
export const filterElementsEligibleAsFrameChildren = (
elements: readonly ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
) => {
const otherFrames = new Set<ExcalidrawFrameLikeElement["id"]>();
const elementsMap = arrayToMap(elements);
elements = omitGroupsContainingFrameLikes(elements);
for (const element of elements) {
if (isFrameLikeElement(element) && element.id !== frame.id) {
otherFrames.add(element.id);
}
}
const processedGroups = new Set<ExcalidrawElement["id"]>();
const eligibleElements: ExcalidrawElement[] = [];
for (const element of elements) {
// don't add frames or their children
if (
isFrameLikeElement(element) ||
(element.frameId && otherFrames.has(element.frameId))
) {
continue;
}
if (element.groupIds.length) {
const shallowestGroupId = element.groupIds.at(-1)!;
if (!processedGroups.has(shallowestGroupId)) {
processedGroups.add(shallowestGroupId);
const groupElements = getElementsInGroup(elements, shallowestGroupId);
if (
groupElements.some((el) =>
elementOverlapsWithFrame(el, frame, elementsMap),
)
) {
for (const child of groupElements) {
eligibleElements.push(child);
}
}
}
} else {
const overlaps = elementOverlapsWithFrame(element, frame, elementsMap);
if (overlaps) {
eligibleElements.push(element);
}
}
}
return eligibleElements;
};
/**
* Retains (or repairs for target frame) the ordering invriant where children
* elements come right before the parent frame:
* [el, el, child, child, frame, el]
*
* @returns mutated allElements (same data structure)
*/
export const addElementsToFrame = <T extends ElementsMapOrArray>(
allElements: T,
elementsToAdd: NonDeletedExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
appState: AppState,
): T => {
const elementsMap = arrayToMap(allElements);
const currTargetFrameChildrenMap = new Map<ExcalidrawElement["id"], true>();
for (const element of allElements.values()) {
if (element.frameId === frame.id) {
currTargetFrameChildrenMap.set(element.id, true);
}
}
const suppliedElementsToAddSet = new Set(elementsToAdd.map((el) => el.id));
const finalElementsToAdd: ExcalidrawElement[] = [];
const otherFrames = new Set<ExcalidrawFrameLikeElement["id"]>();
for (const element of elementsToAdd) {
if (isFrameLikeElement(element) && element.id !== frame.id) {
otherFrames.add(element.id);
}
}
// - add bound text elements if not already in the array
// - filter out elements that are already in the frame
for (const element of omitGroupsContainingFrameLikes(
allElements,
elementsToAdd,
)) {
// don't add frames or their children
if (
isFrameLikeElement(element) ||
(element.frameId && otherFrames.has(element.frameId))
) {
continue;
}
// if the element is already in another frame (which is also in elementsToAdd),
// it means that frame and children are selected at the same time
// => keep original frame membership, do not add to the target frame
if (
element.frameId &&
appState.selectedElementIds[element.id] &&
appState.selectedElementIds[element.frameId]
) {
continue;
}
if (!currTargetFrameChildrenMap.has(element.id)) {
finalElementsToAdd.push(element);
}
const boundTextElement = getBoundTextElement(element, elementsMap);
if (
boundTextElement &&
!suppliedElementsToAddSet.has(boundTextElement.id) &&
!currTargetFrameChildrenMap.has(boundTextElement.id)
) {
finalElementsToAdd.push(boundTextElement);
}
}
for (const element of finalElementsToAdd) {
mutateElement(element, elementsMap, {
frameId: frame.id,
});
}
return allElements;
};
export const removeElementsFromFrame = (
elementsToRemove: ReadonlySetLike<NonDeletedExcalidrawElement>,
elementsMap: ElementsMap,
) => {
const _elementsToRemove = new Map<
ExcalidrawElement["id"],
ExcalidrawElement
>();
const toRemoveElementsByFrame = new Map<
ExcalidrawFrameLikeElement["id"],
ExcalidrawElement[]
>();
for (const element of elementsToRemove) {
if (element.frameId) {
_elementsToRemove.set(element.id, element);
const arr = toRemoveElementsByFrame.get(element.frameId) || [];
arr.push(element);
const boundTextElement = getBoundTextElement(element, elementsMap);
if (boundTextElement) {
_elementsToRemove.set(boundTextElement.id, boundTextElement);
arr.push(boundTextElement);
}
toRemoveElementsByFrame.set(element.frameId, arr);
}
}
for (const [, element] of _elementsToRemove) {
mutateElement(element, elementsMap, {
frameId: null,
});
}
};
export const removeAllElementsFromFrame = <T extends ExcalidrawElement>(
allElements: readonly T[],
frame: ExcalidrawFrameLikeElement,
) => {
const elementsInFrame = getFrameChildren(allElements, frame.id);
removeElementsFromFrame(elementsInFrame, arrayToMap(allElements));
return allElements;
};
export const replaceAllElementsInFrame = <T extends ExcalidrawElement>(
allElements: readonly T[],
nextElementsInFrame: ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
app: AppClassProperties,
): T[] => {
return addElementsToFrame(
removeAllElementsFromFrame(allElements, frame),
nextElementsInFrame,
frame,
app.state,
).slice();
};
/** does not mutate elements, but returns new ones */
export const updateFrameMembershipOfSelectedElements = <
T extends ElementsMapOrArray,
>(
allElements: T,
appState: AppState,
app: AppClassProperties,
) => {
const selectedElements = app.scene.getSelectedElements({
selectedElementIds: appState.selectedElementIds,
// supplying elements explicitly in case we're passed non-state elements
elements: allElements,
});
const elementsToFilter = new Set<ExcalidrawElement>(selectedElements);
if (appState.editingGroupId) {
for (const element of selectedElements) {
if (element.groupIds.length === 0) {
elementsToFilter.add(element);
} else {
element.groupIds
.flatMap((gid) => getElementsInGroup(allElements, gid))
.forEach((element) => elementsToFilter.add(element));
}
}
}
const elementsToRemove = new Set<ExcalidrawElement>();
const elementsMap = arrayToMap(allElements);
elementsToFilter.forEach((element) => {
if (
element.frameId &&
!isFrameLikeElement(element) &&
!isElementInFrame(element, elementsMap, appState)
) {
elementsToRemove.add(element);
}
});
if (elementsToRemove.size > 0) {
removeElementsFromFrame(elementsToRemove, elementsMap);
}
return allElements;
};
/**
* filters out elements that are inside groups that contain a frame element
* anywhere in the group tree
*/
export const omitGroupsContainingFrameLikes = (
allElements: ElementsMapOrArray,
/** subset of elements you want to filter. Optional perf optimization so we
* don't have to filter all elements unnecessarily
*/
selectedElements?: readonly ExcalidrawElement[],
) => {
const uniqueGroupIds = new Set<string>();
const elements = selectedElements || allElements;
for (const el of elements.values()) {
const topMostGroupId = el.groupIds[el.groupIds.length - 1];
if (topMostGroupId) {
uniqueGroupIds.add(topMostGroupId);
}
}
const rejectedGroupIds = new Set<string>();
for (const groupId of uniqueGroupIds) {
if (
getElementsInGroup(allElements, groupId).some((el) =>
isFrameLikeElement(el),
)
) {
rejectedGroupIds.add(groupId);
}
}
const ret: ExcalidrawElement[] = [];
for (const element of elements.values()) {
if (!rejectedGroupIds.has(element.groupIds[element.groupIds.length - 1])) {
ret.push(element);
}
}
return ret;
};
/**
* depending on the appState, return target frame, which is the frame the given element
* is going to be added to or remove from
*/
export const getTargetFrame = (
element: ExcalidrawElement,
elementsMap: ElementsMap,
appState: StaticCanvasAppState,
) => {
const _element = isTextElement(element)
? getContainerElement(element, elementsMap) || element
: element;
// if the element and its containing frame are both selected, then
// the containing frame is the target frame
if (
_element.frameId &&
appState.selectedElementIds[_element.id] &&
appState.selectedElementIds[_element.frameId]
) {
return getContainingFrame(_element, elementsMap);
}
return appState.selectedElementIds[_element.id] &&
appState.selectedElementsAreBeingDragged
? appState.frameToHighlight
: getContainingFrame(_element, elementsMap);
};
// TODO: this a huge bottleneck for large scenes, optimise
// given an element, return if the element is in some frame
export const isElementInFrame = (
element: ExcalidrawElement,
allElementsMap: ElementsMap,
appState: StaticCanvasAppState,
opts?: {
targetFrame?: ExcalidrawFrameLikeElement;
checkedGroups?: Map<string, boolean>;
},
) => {
const frame =
opts?.targetFrame ?? getTargetFrame(element, allElementsMap, appState);
if (!frame) {
return false;
}
const _element = isTextElement(element)
? getContainerElement(element, allElementsMap) || element
: element;
const setGroupsInFrame = (isInFrame: boolean) => {
if (opts?.checkedGroups) {
_element.groupIds.forEach((groupId) => {
opts.checkedGroups?.set(groupId, isInFrame);
});
}
};
if (
// if the element is not selected, or it is selected but not being dragged,
// frame membership won't update, so return true
!appState.selectedElementIds[_element.id] ||
!appState.selectedElementsAreBeingDragged ||
// if both frame and element are selected, won't update membership, so return true
(appState.selectedElementIds[_element.id] &&
appState.selectedElementIds[frame.id])
) {
return true;
}
if (_element.groupIds.length === 0) {
return elementOverlapsWithFrame(_element, frame, allElementsMap);
}
for (const gid of _element.groupIds) {
if (opts?.checkedGroups?.has(gid)) {
return opts.checkedGroups.get(gid)!!;
}
}
const allElementsInGroup = new Set(
_element.groupIds
.filter((gid) => {
if (opts?.checkedGroups) {
return !opts.checkedGroups.has(gid);
}
return true;
})
.flatMap((gid) => getElementsInGroup(allElementsMap, gid)),
);
if (appState.editingGroupId && appState.selectedElementsAreBeingDragged) {
const selectedElements = new Set(
getSelectedElements(allElementsMap, appState),
);
const editingGroupOverlapsFrame = appState.frameToHighlight !== null;
if (editingGroupOverlapsFrame) {
return true;
}
selectedElements.forEach((selectedElement) => {
allElementsInGroup.delete(selectedElement);
});
}
for (const elementInGroup of allElementsInGroup) {
if (isFrameLikeElement(elementInGroup)) {
setGroupsInFrame(false);
return false;
}
}
for (const elementInGroup of allElementsInGroup) {
if (elementOverlapsWithFrame(elementInGroup, frame, allElementsMap)) {
setGroupsInFrame(true);
return true;
}
}
return false;
};
export const shouldApplyFrameClip = (
element: ExcalidrawElement,
frame: ExcalidrawFrameLikeElement,
appState: StaticCanvasAppState,
elementsMap: ElementsMap,
checkedGroups?: Map<string, boolean>,
) => {
if (!appState.frameRendering || !appState.frameRendering.clip) {
return false;
}
// for individual elements, only clip when the element is
// a. overlapping with the frame, or
// b. containing the frame, for example when an element is used as a background
// and is therefore bigger than the frame and completely contains the frame
const shouldClipElementItself =
isElementIntersectingFrame(element, frame, elementsMap) ||
isElementContainingFrame(element, frame, elementsMap);
if (shouldClipElementItself) {
for (const groupId of element.groupIds) {
checkedGroups?.set(groupId, true);
}
return true;
}
// if an element is outside the frame, but is part of a group that has some elements
// "in" the frame, we should clip the element
if (
!shouldClipElementItself &&
element.groupIds.length > 0 &&
!elementsAreInFrameBounds([element], frame, elementsMap)
) {
let shouldClip = false;
// if no elements are being dragged, we can skip the geometry check
// because we know if the element is in the given frame or not
if (!appState.selectedElementsAreBeingDragged) {
shouldClip = element.frameId === frame.id;
for (const groupId of element.groupIds) {
checkedGroups?.set(groupId, shouldClip);
}
} else {
shouldClip = isElementInFrame(element, elementsMap, appState, {
targetFrame: frame,
checkedGroups,
});
}
for (const groupId of element.groupIds) {
checkedGroups?.set(groupId, shouldClip);
}
return shouldClip;
}
return false;
};
const DEFAULT_FRAME_NAME = "Frame";
const DEFAULT_AI_FRAME_NAME = "AI Frame";
export const getDefaultFrameName = (element: ExcalidrawFrameLikeElement) => {
// TODO name frames "AI" only if specific to AI frames
return isFrameElement(element) ? DEFAULT_FRAME_NAME : DEFAULT_AI_FRAME_NAME;
};
export const getFrameLikeTitle = (element: ExcalidrawFrameLikeElement) => {
return element.name === null ? getDefaultFrameName(element) : element.name;
};
export const getElementsOverlappingFrame = (
elements: readonly ExcalidrawElement[],
frame: ExcalidrawFrameLikeElement,
) => {
return (
elementsOverlappingBBox({
elements,
bounds: frame,
type: "overlap",
})
// removes elements who are overlapping, but are in a different frame,
// and thus invisible in target frame
.filter((el) => !el.frameId || el.frameId === frame.id)
);
};
export const frameAndChildrenSelectedTogether = (
selectedElements: readonly ExcalidrawElement[],
) => {
const selectedElementsMap = arrayToMap(selectedElements);
return (
selectedElements.length > 1 &&
selectedElements.some(
(element) => element.frameId && selectedElementsMap.has(element.frameId),
)
);
};
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import type {
AppClassProperties,
AppState,
InteractiveCanvasAppState,
} from "@excalidraw/excalidraw/types";
import type { Mutable } from "@excalidraw/common/utility-types";
import { getBoundTextElement } from "./textElement";
import { isBoundToContainer } from "./typeChecks";
import { makeNextSelectedElementIds, getSelectedElements } from "./selection";
import type {
GroupId,
ExcalidrawElement,
NonDeleted,
NonDeletedExcalidrawElement,
ElementsMapOrArray,
ElementsMap,
} from "./types";
export const selectGroup = (
groupId: GroupId,
appState: InteractiveCanvasAppState,
elements: readonly NonDeleted<ExcalidrawElement>[],
): Pick<
InteractiveCanvasAppState,
"selectedGroupIds" | "selectedElementIds" | "editingGroupId"
> => {
const elementsInGroup = elements.reduce(
(acc: Record<string, true>, element) => {
if (element.groupIds.includes(groupId)) {
acc[element.id] = true;
}
return acc;
},
{},
);
if (Object.keys(elementsInGroup).length < 2) {
if (
appState.selectedGroupIds[groupId] ||
appState.editingGroupId === groupId
) {
return {
selectedElementIds: appState.selectedElementIds,
selectedGroupIds: { ...appState.selectedGroupIds, [groupId]: false },
editingGroupId: null,
};
}
return appState;
}
return {
editingGroupId: appState.editingGroupId,
selectedGroupIds: { ...appState.selectedGroupIds, [groupId]: true },
selectedElementIds: {
...appState.selectedElementIds,
...elementsInGroup,
},
};
};
export const selectGroupsForSelectedElements = (function () {
type SelectGroupsReturnType = Pick<
InteractiveCanvasAppState,
"selectedGroupIds" | "editingGroupId" | "selectedElementIds"
>;
let lastSelectedElements: readonly NonDeleted<ExcalidrawElement>[] | null =
null;
let lastElements: readonly NonDeleted<ExcalidrawElement>[] | null = null;
let lastReturnValue: SelectGroupsReturnType | null = null;
const _selectGroups = (
selectedElements: readonly NonDeleted<ExcalidrawElement>[],
elements: readonly NonDeleted<ExcalidrawElement>[],
appState: Pick<AppState, "selectedElementIds" | "editingGroupId">,
prevAppState: InteractiveCanvasAppState,
): SelectGroupsReturnType => {
if (
lastReturnValue !== undefined &&
elements === lastElements &&
selectedElements === lastSelectedElements &&
appState.editingGroupId === lastReturnValue?.editingGroupId
) {
return lastReturnValue;
}
const selectedGroupIds: Record<GroupId, boolean> = {};
// Gather all the groups withing selected elements
for (const selectedElement of selectedElements) {
let groupIds = selectedElement.groupIds;
if (appState.editingGroupId) {
// handle the case where a group is nested within a group
const indexOfEditingGroup = groupIds.indexOf(appState.editingGroupId);
if (indexOfEditingGroup > -1) {
groupIds = groupIds.slice(0, indexOfEditingGroup);
}
}
if (groupIds.length > 0) {
const lastSelectedGroup = groupIds[groupIds.length - 1];
selectedGroupIds[lastSelectedGroup] = true;
}
}
// Gather all the elements within selected groups
const groupElementsIndex: Record<GroupId, string[]> = {};
const selectedElementIdsInGroups = elements.reduce(
(acc: Record<string, true>, element) => {
if (element.isDeleted) {
return acc;
}
const groupId = element.groupIds.find((id) => selectedGroupIds[id]);
if (groupId) {
acc[element.id] = true;
// Populate the index
if (!Array.isArray(groupElementsIndex[groupId])) {
groupElementsIndex[groupId] = [element.id];
} else {
groupElementsIndex[groupId].push(element.id);
}
}
return acc;
},
{},
);
for (const groupId of Object.keys(groupElementsIndex)) {
// If there is one element in the group, and the group is selected or it's being edited, it's not a group
if (groupElementsIndex[groupId].length < 2) {
if (selectedGroupIds[groupId]) {
selectedGroupIds[groupId] = false;
}
}
}
lastElements = elements;
lastSelectedElements = selectedElements;
lastReturnValue = {
editingGroupId: appState.editingGroupId,
selectedGroupIds,
selectedElementIds: makeNextSelectedElementIds(
{
...appState.selectedElementIds,
...selectedElementIdsInGroups,
},
prevAppState,
),
};
return lastReturnValue;
};
/**
* When you select an element, you often want to actually select the whole group it's in, unless
* you're currently editing that group.
*/
const selectGroupsForSelectedElements = (
appState: Pick<AppState, "selectedElementIds" | "editingGroupId">,
elements: readonly NonDeletedExcalidrawElement[],
prevAppState: InteractiveCanvasAppState,
/**
* supply null in cases where you don't have access to App instance and
* you don't care about optimizing selectElements retrieval
*/
app: AppClassProperties | null,
): Mutable<
Pick<
InteractiveCanvasAppState,
"selectedGroupIds" | "editingGroupId" | "selectedElementIds"
>
> => {
const selectedElements = app
? app.scene.getSelectedElements({
selectedElementIds: appState.selectedElementIds,
// supplying elements explicitly in case we're passed non-state elements
elements,
})
: getSelectedElements(elements, appState);
if (!selectedElements.length) {
return {
selectedGroupIds: {},
editingGroupId: null,
selectedElementIds: makeNextSelectedElementIds(
appState.selectedElementIds,
prevAppState,
),
};
}
return _selectGroups(selectedElements, elements, appState, prevAppState);
};
selectGroupsForSelectedElements.clearCache = () => {
lastElements = null;
lastSelectedElements = null;
lastReturnValue = null;
};
return selectGroupsForSelectedElements;
})();
/**
* If the element's group is selected, don't render an individual
* selection border around it.
*/
export const isSelectedViaGroup = (
appState: InteractiveCanvasAppState,
element: ExcalidrawElement,
) => getSelectedGroupForElement(appState, element) != null;
export const getSelectedGroupForElement = (
appState: Pick<
InteractiveCanvasAppState,
"editingGroupId" | "selectedGroupIds"
>,
element: ExcalidrawElement,
) =>
element.groupIds
.filter((groupId) => groupId !== appState.editingGroupId)
.find((groupId) => appState.selectedGroupIds[groupId]);
export const getSelectedGroupIds = (
appState: InteractiveCanvasAppState,
): GroupId[] =>
Object.entries(appState.selectedGroupIds)
.filter(([groupId, isSelected]) => isSelected)
.map(([groupId, isSelected]) => groupId);
// given a list of elements, return the the actual group ids that should be selected
// or used to update the elements
export const selectGroupsFromGivenElements = (
elements: readonly NonDeleted<ExcalidrawElement>[],
appState: InteractiveCanvasAppState,
) => {
let nextAppState: InteractiveCanvasAppState = {
...appState,
selectedGroupIds: {},
};
for (const element of elements) {
let groupIds = element.groupIds;
if (appState.editingGroupId) {
const indexOfEditingGroup = groupIds.indexOf(appState.editingGroupId);
if (indexOfEditingGroup > -1) {
groupIds = groupIds.slice(0, indexOfEditingGroup);
}
}
if (groupIds.length > 0) {
const groupId = groupIds[groupIds.length - 1];
nextAppState = {
...nextAppState,
...selectGroup(groupId, nextAppState, elements),
};
}
}
return nextAppState.selectedGroupIds;
};
export const editGroupForSelectedElement = (
appState: AppState,
element: NonDeleted<ExcalidrawElement>,
): AppState => {
return {
...appState,
editingGroupId: element.groupIds.length ? element.groupIds[0] : null,
selectedGroupIds: {},
selectedElementIds: {
[element.id]: true,
},
};
};
export const isElementInGroup = (element: ExcalidrawElement, groupId: string) =>
element.groupIds.includes(groupId);
export const getElementsInGroup = (
elements: ElementsMapOrArray,
groupId: string,
) => {
const elementsInGroup: ExcalidrawElement[] = [];
for (const element of elements.values()) {
if (isElementInGroup(element, groupId)) {
elementsInGroup.push(element);
}
}
return elementsInGroup;
};
export const getSelectedGroupIdForElement = (
element: ExcalidrawElement,
selectedGroupIds: { [groupId: string]: boolean },
) => element.groupIds.find((groupId) => selectedGroupIds[groupId]);
export const addToGroup = (
prevGroupIds: ExcalidrawElement["groupIds"],
newGroupId: GroupId,
editingGroupId: AppState["editingGroupId"],
) => {
// insert before the editingGroupId, or push to the end.
const groupIds = [...prevGroupIds];
const positionOfEditingGroupId = editingGroupId
? groupIds.indexOf(editingGroupId)
: -1;
const positionToInsert =
positionOfEditingGroupId > -1 ? positionOfEditingGroupId : groupIds.length;
groupIds.splice(positionToInsert, 0, newGroupId);
return groupIds;
};
export const removeFromSelectedGroups = (
groupIds: ExcalidrawElement["groupIds"],
selectedGroupIds: { [groupId: string]: boolean },
) => groupIds.filter((groupId) => !selectedGroupIds[groupId]);
export const getMaximumGroups = (
elements: ExcalidrawElement[],
elementsMap: ElementsMap,
): ExcalidrawElement[][] => {
const groups: Map<String, ExcalidrawElement[]> = new Map<
String,
ExcalidrawElement[]
>();
elements.forEach((element: ExcalidrawElement) => {
const groupId =
element.groupIds.length === 0
? element.id
: element.groupIds[element.groupIds.length - 1];
const currentGroupMembers = groups.get(groupId) || [];
// Include bound text if present when grouping
const boundTextElement = getBoundTextElement(element, elementsMap);
if (boundTextElement) {
currentGroupMembers.push(boundTextElement);
}
groups.set(groupId, [...currentGroupMembers, element]);
});
return Array.from(groups.values());
};
export const getNonDeletedGroupIds = (elements: ElementsMap) => {
const nonDeletedGroupIds = new Set<string>();
for (const [, element] of elements) {
// defensive check
if (element.isDeleted) {
continue;
}
// defensive fallback
for (const groupId of element.groupIds ?? []) {
nonDeletedGroupIds.add(groupId);
}
}
return nonDeletedGroupIds;
};
export const elementsAreInSameGroup = (
elements: readonly ExcalidrawElement[],
) => {
const allGroups = elements.flatMap((element) => element.groupIds);
const groupCount = new Map<string, number>();
let maxGroup = 0;
for (const group of allGroups) {
groupCount.set(group, (groupCount.get(group) ?? 0) + 1);
if (groupCount.get(group)! > maxGroup) {
maxGroup = groupCount.get(group)!;
}
}
return maxGroup === elements.length;
};
export const isInGroup = (element: NonDeletedExcalidrawElement) => {
return element.groupIds.length > 0;
};
export const getNewGroupIdsForDuplication = (
groupIds: ExcalidrawElement["groupIds"],
editingGroupId: AppState["editingGroupId"],
mapper: (groupId: GroupId) => GroupId,
) => {
const copy = [...groupIds];
const positionOfEditingGroupId = editingGroupId
? groupIds.indexOf(editingGroupId)
: -1;
const endIndex =
positionOfEditingGroupId > -1 ? positionOfEditingGroupId : groupIds.length;
for (let index = 0; index < endIndex; index++) {
copy[index] = mapper(copy[index]);
}
return copy;
};
// given a list of selected elements, return the element grouped by their immediate group selected state
// in the case if only one group is selected and all elements selected are within the group, it will respect group hierarchy in accordance to their nested grouping order
export const getSelectedElementsByGroup = (
selectedElements: ExcalidrawElement[],
elementsMap: ElementsMap,
appState: Readonly<AppState>,
): ExcalidrawElement[][] => {
const selectedGroupIds = getSelectedGroupIds(appState);
const unboundElements = selectedElements.filter(
(element) => !isBoundToContainer(element),
);
const groups: Map<string, ExcalidrawElement[]> = new Map();
const elements: Map<string, ExcalidrawElement[]> = new Map();
// helper function to add an element to the elements map
const addToElementsMap = (element: ExcalidrawElement) => {
// elements
const currentElementMembers = elements.get(element.id) || [];
const boundTextElement = getBoundTextElement(element, elementsMap);
if (boundTextElement) {
currentElementMembers.push(boundTextElement);
}
elements.set(element.id, [...currentElementMembers, element]);
};
// helper function to add an element to the groups map
const addToGroupsMap = (element: ExcalidrawElement, groupId: string) => {
// groups
const currentGroupMembers = groups.get(groupId) || [];
const boundTextElement = getBoundTextElement(element, elementsMap);
if (boundTextElement) {
currentGroupMembers.push(boundTextElement);
}
groups.set(groupId, [...currentGroupMembers, element]);
};
// helper function to handle the case where a single group is selected
// and all elements selected are within the group, it will respect group hierarchy in accordance to
// their nested grouping order
const handleSingleSelectedGroupCase = (
element: ExcalidrawElement,
selectedGroupId: GroupId,
) => {
const indexOfSelectedGroupId = element.groupIds.indexOf(selectedGroupId, 0);
const nestedGroupCount = element.groupIds.slice(
0,
indexOfSelectedGroupId,
).length;
return nestedGroupCount > 0
? addToGroupsMap(element, element.groupIds[indexOfSelectedGroupId - 1])
: addToElementsMap(element);
};
const isAllInSameGroup = selectedElements.every((element) =>
isSelectedViaGroup(appState, element),
);
unboundElements.forEach((element) => {
const selectedGroupId = getSelectedGroupIdForElement(
element,
appState.selectedGroupIds,
);
if (!selectedGroupId) {
addToElementsMap(element);
} else if (selectedGroupIds.length === 1 && isAllInSameGroup) {
handleSingleSelectedGroupCase(element, selectedGroupId);
} else {
addToGroupsMap(element, selectedGroupId);
}
});
return Array.from(groups.values()).concat(Array.from(elements.values()));
};
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import { invariant, isDevEnv, isTestEnv } from "@excalidraw/common";
import {
pointFrom,
pointFromVector,
pointRotateRads,
pointScaleFromOrigin,
pointsEqual,
triangleIncludesPoint,
vectorCross,
vectorFromPoint,
vectorScale,
} from "@excalidraw/math";
import type {
LocalPoint,
GlobalPoint,
Triangle,
Vector,
} from "@excalidraw/math";
import { getCenterForBounds, type Bounds } from "./bounds";
import type { ExcalidrawBindableElement } from "./types";
export const HEADING_RIGHT = [1, 0] as Heading;
export const HEADING_DOWN = [0, 1] as Heading;
export const HEADING_LEFT = [-1, 0] as Heading;
export const HEADING_UP = [0, -1] as Heading;
export type Heading = [1, 0] | [0, 1] | [-1, 0] | [0, -1];
export const vectorToHeading = (vec: Vector): Heading => {
const [x, y] = vec;
const absX = Math.abs(x);
const absY = Math.abs(y);
if (x > absY) {
return HEADING_RIGHT;
} else if (x <= -absY) {
return HEADING_LEFT;
} else if (y > absX) {
return HEADING_DOWN;
}
return HEADING_UP;
};
export const headingForPoint = <P extends GlobalPoint | LocalPoint>(
p: P,
o: P,
) => vectorToHeading(vectorFromPoint<P>(p, o));
export const headingForPointIsHorizontal = <P extends GlobalPoint | LocalPoint>(
p: P,
o: P,
) => headingIsHorizontal(headingForPoint<P>(p, o));
export const compareHeading = (a: Heading, b: Heading) =>
a[0] === b[0] && a[1] === b[1];
export const headingIsHorizontal = (a: Heading) =>
compareHeading(a, HEADING_RIGHT) || compareHeading(a, HEADING_LEFT);
export const headingIsVertical = (a: Heading) => !headingIsHorizontal(a);
const headingForPointFromDiamondElement = (
element: Readonly<ExcalidrawBindableElement>,
aabb: Readonly<Bounds>,
point: Readonly<GlobalPoint>,
): Heading => {
const midPoint = getCenterForBounds(aabb);
if (isDevEnv() || isTestEnv()) {
invariant(
element.width > 0 && element.height > 0,
"Diamond element has no width or height",
);
invariant(
!pointsEqual(midPoint, point),
"The point is too close to the element mid point to determine heading",
);
}
const SHRINK = 0.95; // Rounded elements tolerance
const top = pointFromVector(
vectorScale(
vectorFromPoint(
pointRotateRads(
pointFrom<GlobalPoint>(element.x + element.width / 2, element.y),
midPoint,
element.angle,
),
midPoint,
),
SHRINK,
),
midPoint,
);
const right = pointFromVector(
vectorScale(
vectorFromPoint(
pointRotateRads(
pointFrom<GlobalPoint>(
element.x + element.width,
element.y + element.height / 2,
),
midPoint,
element.angle,
),
midPoint,
),
SHRINK,
),
midPoint,
);
const bottom = pointFromVector(
vectorScale(
vectorFromPoint(
pointRotateRads(
pointFrom<GlobalPoint>(
element.x + element.width / 2,
element.y + element.height,
),
midPoint,
element.angle,
),
midPoint,
),
SHRINK,
),
midPoint,
);
const left = pointFromVector(
vectorScale(
vectorFromPoint(
pointRotateRads(
pointFrom<GlobalPoint>(element.x, element.y + element.height / 2),
midPoint,
element.angle,
),
midPoint,
),
SHRINK,
),
midPoint,
);
// Corners
if (
vectorCross(vectorFromPoint(point, top), vectorFromPoint(top, right)) <=
0 &&
vectorCross(vectorFromPoint(point, top), vectorFromPoint(top, left)) > 0
) {
return headingForPoint(top, midPoint);
} else if (
vectorCross(
vectorFromPoint(point, right),
vectorFromPoint(right, bottom),
) <= 0 &&
vectorCross(vectorFromPoint(point, right), vectorFromPoint(right, top)) > 0
) {
return headingForPoint(right, midPoint);
} else if (
vectorCross(
vectorFromPoint(point, bottom),
vectorFromPoint(bottom, left),
) <= 0 &&
vectorCross(
vectorFromPoint(point, bottom),
vectorFromPoint(bottom, right),
) > 0
) {
return headingForPoint(bottom, midPoint);
} else if (
vectorCross(vectorFromPoint(point, left), vectorFromPoint(left, top)) <=
0 &&
vectorCross(vectorFromPoint(point, left), vectorFromPoint(left, bottom)) > 0
) {
return headingForPoint(left, midPoint);
}
// Sides
if (
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(top, midPoint),
) <= 0 &&
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(right, midPoint),
) > 0
) {
const p = element.width > element.height ? top : right;
return headingForPoint(p, midPoint);
} else if (
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(right, midPoint),
) <= 0 &&
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(bottom, midPoint),
) > 0
) {
const p = element.width > element.height ? bottom : right;
return headingForPoint(p, midPoint);
} else if (
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(bottom, midPoint),
) <= 0 &&
vectorCross(
vectorFromPoint(point, midPoint),
vectorFromPoint(left, midPoint),
) > 0
) {
const p = element.width > element.height ? bottom : left;
return headingForPoint(p, midPoint);
}
const p = element.width > element.height ? top : left;
return headingForPoint(p, midPoint);
};
// Gets the heading for the point by creating a bounding box around the rotated
// close fitting bounding box, then creating 4 search cones around the center of
// the external bbox.
export const headingForPointFromElement = <Point extends GlobalPoint>(
element: Readonly<ExcalidrawBindableElement>,
aabb: Readonly<Bounds>,
p: Readonly<Point>,
): Heading => {
const SEARCH_CONE_MULTIPLIER = 2;
const midPoint = getCenterForBounds(aabb);
if (element.type === "diamond") {
return headingForPointFromDiamondElement(element, aabb, p);
}
const topLeft = pointScaleFromOrigin(
pointFrom(aabb[0], aabb[1]),
midPoint,
SEARCH_CONE_MULTIPLIER,
) as Point;
const topRight = pointScaleFromOrigin(
pointFrom(aabb[2], aabb[1]),
midPoint,
SEARCH_CONE_MULTIPLIER,
) as Point;
const bottomLeft = pointScaleFromOrigin(
pointFrom(aabb[0], aabb[3]),
midPoint,
SEARCH_CONE_MULTIPLIER,
) as Point;
const bottomRight = pointScaleFromOrigin(
pointFrom(aabb[2], aabb[3]),
midPoint,
SEARCH_CONE_MULTIPLIER,
) as Point;
return triangleIncludesPoint<Point>(
[topLeft, topRight, midPoint] as Triangle<Point>,
p,
)
? HEADING_UP
: triangleIncludesPoint<Point>(
[topRight, bottomRight, midPoint] as Triangle<Point>,
p,
)
? HEADING_RIGHT
: triangleIncludesPoint<Point>(
[bottomRight, bottomLeft, midPoint] as Triangle<Point>,
p,
)
? HEADING_DOWN
: HEADING_LEFT;
};
export const flipHeading = (h: Heading): Heading =>
[
h[0] === 0 ? 0 : h[0] > 0 ? -1 : 1,
h[1] === 0 ? 0 : h[1] > 0 ? -1 : 1,
] as Heading;
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// -----------------------------------------------------------------------------
// ExcalidrawImageElement & related helpers
// -----------------------------------------------------------------------------
import { MIME_TYPES, SVG_NS } from "@excalidraw/common";
import type {
AppClassProperties,
DataURL,
BinaryFiles,
} from "@excalidraw/excalidraw/types";
import { isInitializedImageElement } from "./typeChecks";
import type {
ExcalidrawElement,
FileId,
InitializedExcalidrawImageElement,
} from "./types";
export const loadHTMLImageElement = (dataURL: DataURL) => {
return new Promise<HTMLImageElement>((resolve, reject) => {
const image = new Image();
image.onload = () => {
resolve(image);
};
image.onerror = (error) => {
reject(error);
};
image.src = dataURL;
});
};
/** NOTE: updates cache even if already populated with given image. Thus,
* you should filter out the images upstream if you want to optimize this. */
export const updateImageCache = async ({
fileIds,
files,
imageCache,
}: {
fileIds: FileId[];
files: BinaryFiles;
imageCache: AppClassProperties["imageCache"];
}) => {
const updatedFiles = new Map<FileId, true>();
const erroredFiles = new Map<FileId, true>();
await Promise.all(
fileIds.reduce((promises, fileId) => {
const fileData = files[fileId as string];
if (fileData && !updatedFiles.has(fileId)) {
updatedFiles.set(fileId, true);
return promises.concat(
(async () => {
try {
if (fileData.mimeType === MIME_TYPES.binary) {
throw new Error("Only images can be added to ImageCache");
}
const imagePromise = loadHTMLImageElement(fileData.dataURL);
const data = {
image: imagePromise,
mimeType: fileData.mimeType,
} as const;
// store the promise immediately to indicate there's an in-progress
// initialization
imageCache.set(fileId, data);
const image = await imagePromise;
imageCache.set(fileId, { ...data, image });
} catch (error: any) {
erroredFiles.set(fileId, true);
}
})(),
);
}
return promises;
}, [] as Promise<any>[]),
);
return {
imageCache,
/** includes errored files because they cache was updated nonetheless */
updatedFiles,
/** files that failed when creating HTMLImageElement */
erroredFiles,
};
};
export const getInitializedImageElements = (
elements: readonly ExcalidrawElement[],
) =>
elements.filter((element) =>
isInitializedImageElement(element),
) as InitializedExcalidrawImageElement[];
export const isHTMLSVGElement = (node: Node | null): node is SVGElement => {
// lower-casing due to XML/HTML convention differences
// https://johnresig.com/blog/nodename-case-sensitivity
return node?.nodeName.toLowerCase() === "svg";
};
export const normalizeSVG = (SVGString: string) => {
const doc = new DOMParser().parseFromString(SVGString, MIME_TYPES.svg);
const svg = doc.querySelector("svg");
const errorNode = doc.querySelector("parsererror");
if (errorNode || !isHTMLSVGElement(svg)) {
throw new Error("Invalid SVG");
} else {
if (!svg.hasAttribute("xmlns")) {
svg.setAttribute("xmlns", SVG_NS);
}
let width = svg.getAttribute("width");
let height = svg.getAttribute("height");
// Do not use % or auto values for width/height
// to avoid scaling issues when rendering at different sizes/zoom levels
if (width?.includes("%") || width === "auto") {
width = null;
}
if (height?.includes("%") || height === "auto") {
height = null;
}
const viewBox = svg.getAttribute("viewBox");
if (!width || !height) {
width = width || "50";
height = height || "50";
if (viewBox) {
const match = viewBox.match(
/\d+ +\d+ +(\d+(?:\.\d+)?) +(\d+(?:\.\d+)?)/,
);
if (match) {
[, width, height] = match;
}
}
svg.setAttribute("width", width);
svg.setAttribute("height", height);
}
// Make sure viewBox is set
if (!viewBox) {
svg.setAttribute("viewBox", `0 0 ${width} ${height}`);
}
return svg.outerHTML;
}
};
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import { toIterable } from "@excalidraw/common";
import { isInvisiblySmallElement } from "./sizeHelpers";
import { isLinearElementType } from "./typeChecks";
import type {
ExcalidrawElement,
NonDeletedExcalidrawElement,
NonDeleted,
ElementsMapOrArray,
} from "./types";
/**
* @deprecated unsafe, use hashElementsVersion instead
*/
export const getSceneVersion = (elements: readonly ExcalidrawElement[]) =>
elements.reduce((acc, el) => acc + el.version, 0);
/**
* Hashes elements' versionNonce (using djb2 algo). Order of elements matters.
*/
export const hashElementsVersion = (elements: ElementsMapOrArray): number => {
let hash = 5381;
for (const element of toIterable(elements)) {
hash = (hash << 5) + hash + element.versionNonce;
}
return hash >>> 0; // Ensure unsigned 32-bit integer
};
// string hash function (using djb2). Not cryptographically secure, use only
// for versioning and such.
export const hashString = (s: string): number => {
let hash: number = 5381;
for (let i = 0; i < s.length; i++) {
const char: number = s.charCodeAt(i);
hash = (hash << 5) + hash + char;
}
return hash >>> 0; // Ensure unsigned 32-bit integer
};
export const getVisibleElements = (elements: readonly ExcalidrawElement[]) =>
elements.filter(
(el) => !el.isDeleted && !isInvisiblySmallElement(el),
) as readonly NonDeletedExcalidrawElement[];
export const getNonDeletedElements = <T extends ExcalidrawElement>(
elements: readonly T[],
) =>
elements.filter((element) => !element.isDeleted) as readonly NonDeleted<T>[];
export const isNonDeletedElement = <T extends ExcalidrawElement>(
element: T,
): element is NonDeleted<T> => !element.isDeleted;
const _clearElements = (
elements: readonly ExcalidrawElement[],
): ExcalidrawElement[] =>
getNonDeletedElements(elements).map((element) =>
isLinearElementType(element.type)
? { ...element, lastCommittedPoint: null }
: element,
);
export const clearElementsForDatabase = (
elements: readonly ExcalidrawElement[],
) => _clearElements(elements);
export const clearElementsForExport = (
elements: readonly ExcalidrawElement[],
) => _clearElements(elements);
export const clearElementsForLocalStorage = (
elements: readonly ExcalidrawElement[],
) => _clearElements(elements);
export * from "./align";
export * from "./binding";
export * from "./bounds";
export * from "./collision";
export * from "./comparisons";
export * from "./containerCache";
export * from "./cropElement";
export * from "./delta";
export * from "./distance";
export * from "./distribute";
export * from "./dragElements";
export * from "./duplicate";
export * from "./elbowArrow";
export * from "./elementLink";
export * from "./embeddable";
export * from "./flowchart";
export * from "./fractionalIndex";
export * from "./frame";
export * from "./groups";
export * from "./heading";
export * from "./image";
export * from "./linearElementEditor";
export * from "./mutateElement";
export * from "./newElement";
export * from "./renderElement";
export * from "./resizeElements";
export * from "./resizeTest";
export * from "./Scene";
export * from "./selection";
export * from "./shape";
export * from "./showSelectedShapeActions";
export * from "./sizeHelpers";
export * from "./sortElements";
export * from "./store";
export * from "./textElement";
export * from "./textMeasurements";
export * from "./textWrapping";
export * from "./transformHandles";
export * from "./typeChecks";
export * from "./utils";
export * from "./zindex";
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import {
getSizeFromPoints,
randomInteger,
getUpdatedTimestamp,
} from "@excalidraw/common";
import type { Radians } from "@excalidraw/math";
import type { Mutable } from "@excalidraw/common/utility-types";
import { ShapeCache } from "./shape";
import { updateElbowArrowPoints } from "./elbowArrow";
import { isElbowArrow } from "./typeChecks";
import type {
ElementsMap,
ExcalidrawElbowArrowElement,
ExcalidrawElement,
NonDeletedSceneElementsMap,
} from "./types";
export type ElementUpdate<TElement extends ExcalidrawElement> = Omit<
Partial<TElement>,
"id" | "updated"
>;
/**
* This function tracks updates of text elements for the purposes for collaboration.
* The version is used to compare updates when more than one user is working in
* the same drawing.
*
* WARNING: this won't trigger the component to update, so if you need to trigger component update,
* use `scene.mutateElement` or `ExcalidrawImperativeAPI.mutateElement` instead.
*/
export const mutateElement = <TElement extends Mutable<ExcalidrawElement>>(
element: TElement,
elementsMap: ElementsMap,
updates: ElementUpdate<TElement>,
options?: {
isDragging?: boolean;
},
) => {
let didChange = false;
// casting to any because can't use `in` operator
// (see https://github.com/microsoft/TypeScript/issues/21732)
const { points, fixedSegments, startBinding, endBinding, fileId } =
updates as any;
if (
isElbowArrow(element) &&
(Object.keys(updates).length === 0 || // normalization case
typeof points !== "undefined" || // repositioning
typeof fixedSegments !== "undefined" || // segment fixing
typeof startBinding !== "undefined" ||
typeof endBinding !== "undefined") // manual binding to element
) {
updates = {
...updates,
angle: 0 as Radians,
...updateElbowArrowPoints(
{
...element,
x: updates.x || element.x,
y: updates.y || element.y,
},
elementsMap as NonDeletedSceneElementsMap,
updates as ElementUpdate<ExcalidrawElbowArrowElement>,
options,
),
};
} else if (typeof points !== "undefined") {
updates = { ...getSizeFromPoints(points), ...updates };
}
for (const key in updates) {
const value = (updates as any)[key];
if (typeof value !== "undefined") {
if (
(element as any)[key] === value &&
// if object, always update because its attrs could have changed
// (except for specific keys we handle below)
(typeof value !== "object" ||
value === null ||
key === "groupIds" ||
key === "scale")
) {
continue;
}
if (key === "scale") {
const prevScale = (element as any)[key];
const nextScale = value;
if (prevScale[0] === nextScale[0] && prevScale[1] === nextScale[1]) {
continue;
}
} else if (key === "points") {
const prevPoints = (element as any)[key];
const nextPoints = value;
if (prevPoints.length === nextPoints.length) {
let didChangePoints = false;
let index = prevPoints.length;
while (--index) {
const prevPoint = prevPoints[index];
const nextPoint = nextPoints[index];
if (
prevPoint[0] !== nextPoint[0] ||
prevPoint[1] !== nextPoint[1]
) {
didChangePoints = true;
break;
}
}
if (!didChangePoints) {
continue;
}
}
}
(element as any)[key] = value;
didChange = true;
}
}
if (!didChange) {
return element;
}
if (
typeof updates.height !== "undefined" ||
typeof updates.width !== "undefined" ||
typeof fileId != "undefined" ||
typeof points !== "undefined"
) {
ShapeCache.delete(element);
}
element.version = updates.version ?? element.version + 1;
element.versionNonce = updates.versionNonce ?? randomInteger();
element.updated = getUpdatedTimestamp();
return element;
};
export const newElementWith = <TElement extends ExcalidrawElement>(
element: TElement,
updates: ElementUpdate<TElement>,
/** pass `true` to always regenerate */
force = false,
): TElement => {
let didChange = false;
for (const key in updates) {
const value = (updates as any)[key];
if (typeof value !== "undefined") {
if (
(element as any)[key] === value &&
// if object, always update because its attrs could have changed
(typeof value !== "object" || value === null)
) {
continue;
}
didChange = true;
}
}
if (!didChange && !force) {
return element;
}
return {
...element,
...updates,
version: updates.version ?? element.version + 1,
versionNonce: updates.versionNonce ?? randomInteger(),
updated: getUpdatedTimestamp(),
};
};
/**
* Mutates element, bumping `version`, `versionNonce`, and `updated`.
*
* NOTE: does not trigger re-render.
*/
export const bumpVersion = <T extends Mutable<ExcalidrawElement>>(
element: T,
version?: ExcalidrawElement["version"],
) => {
element.version = (version ?? element.version) + 1;
element.versionNonce = randomInteger();
element.updated = getUpdatedTimestamp();
return element;
};
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import {
DEFAULT_ELEMENT_PROPS,
DEFAULT_FONT_FAMILY,
DEFAULT_FONT_SIZE,
DEFAULT_TEXT_ALIGN,
DEFAULT_VERTICAL_ALIGN,
VERTICAL_ALIGN,
randomInteger,
randomId,
getFontString,
getUpdatedTimestamp,
getLineHeight,
} from "@excalidraw/common";
import type { Radians } from "@excalidraw/math";
import type { MarkOptional, Merge } from "@excalidraw/common/utility-types";
import {
getElementAbsoluteCoords,
getResizedElementAbsoluteCoords,
} from "./bounds";
import { newElementWith } from "./mutateElement";
import { getBoundTextMaxWidth } from "./textElement";
import { normalizeText, measureText } from "./textMeasurements";
import { wrapText } from "./textWrapping";
import { isLineElement } from "./typeChecks";
import type {
ExcalidrawElement,
ExcalidrawImageElement,
ExcalidrawTextElement,
ExcalidrawLinearElement,
ExcalidrawGenericElement,
NonDeleted,
TextAlign,
VerticalAlign,
Arrowhead,
ExcalidrawFreeDrawElement,
FontFamilyValues,
ExcalidrawTextContainer,
ExcalidrawFrameElement,
ExcalidrawEmbeddableElement,
ExcalidrawMagicFrameElement,
ExcalidrawIframeElement,
ElementsMap,
ExcalidrawArrowElement,
ExcalidrawElbowArrowElement,
ExcalidrawLineElement,
} from "./types";
export type ElementConstructorOpts = MarkOptional<
Omit<ExcalidrawGenericElement, "id" | "type" | "isDeleted" | "updated">,
| "width"
| "height"
| "angle"
| "groupIds"
| "frameId"
| "index"
| "boundElements"
| "seed"
| "version"
| "versionNonce"
| "link"
| "strokeStyle"
| "fillStyle"
| "strokeColor"
| "backgroundColor"
| "roughness"
| "strokeWidth"
| "roundness"
| "locked"
| "opacity"
| "customData"
>;
const _newElementBase = <T extends ExcalidrawElement>(
type: T["type"],
{
x,
y,
strokeColor = DEFAULT_ELEMENT_PROPS.strokeColor,
backgroundColor = DEFAULT_ELEMENT_PROPS.backgroundColor,
fillStyle = DEFAULT_ELEMENT_PROPS.fillStyle,
strokeWidth = DEFAULT_ELEMENT_PROPS.strokeWidth,
strokeStyle = DEFAULT_ELEMENT_PROPS.strokeStyle,
roughness = DEFAULT_ELEMENT_PROPS.roughness,
opacity = DEFAULT_ELEMENT_PROPS.opacity,
width = 0,
height = 0,
angle = 0 as Radians,
groupIds = [],
frameId = null,
index = null,
roundness = null,
boundElements = null,
link = null,
locked = DEFAULT_ELEMENT_PROPS.locked,
...rest
}: ElementConstructorOpts & Omit<Partial<ExcalidrawGenericElement>, "type">,
) => {
// NOTE (mtolmacs): This is a temporary check to detect extremely large
// element position or sizing
if (
x < -1e6 ||
x > 1e6 ||
y < -1e6 ||
y > 1e6 ||
width < -1e6 ||
width > 1e6 ||
height < -1e6 ||
height > 1e6
) {
console.error("New element size or position is too large", {
x,
y,
width,
height,
// @ts-ignore
points: rest.points,
});
}
// assign type to guard against excess properties
const element: Merge<ExcalidrawGenericElement, { type: T["type"] }> = {
id: rest.id || randomId(),
type,
x,
y,
width,
height,
angle,
strokeColor,
backgroundColor,
fillStyle,
strokeWidth,
strokeStyle,
roughness,
opacity,
groupIds,
frameId,
index,
roundness,
seed: rest.seed ?? randomInteger(),
version: rest.version || 1,
versionNonce: rest.versionNonce ?? 0,
isDeleted: false as false,
boundElements,
updated: getUpdatedTimestamp(),
link,
locked,
customData: rest.customData,
};
return element;
};
export const newElement = (
opts: {
type: ExcalidrawGenericElement["type"];
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawGenericElement> =>
_newElementBase<ExcalidrawGenericElement>(opts.type, opts);
export const newEmbeddableElement = (
opts: {
type: "embeddable";
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawEmbeddableElement> => {
return _newElementBase<ExcalidrawEmbeddableElement>("embeddable", opts);
};
export const newIframeElement = (
opts: {
type: "iframe";
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawIframeElement> => {
return {
..._newElementBase<ExcalidrawIframeElement>("iframe", opts),
};
};
export const newFrameElement = (
opts: {
name?: string;
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawFrameElement> => {
const frameElement = newElementWith(
{
..._newElementBase<ExcalidrawFrameElement>("frame", opts),
type: "frame",
name: opts?.name || null,
},
{},
);
return frameElement;
};
export const newMagicFrameElement = (
opts: {
name?: string;
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawMagicFrameElement> => {
const frameElement = newElementWith(
{
..._newElementBase<ExcalidrawMagicFrameElement>("magicframe", opts),
type: "magicframe",
name: opts?.name || null,
},
{},
);
return frameElement;
};
/** computes element x/y offset based on textAlign/verticalAlign */
const getTextElementPositionOffsets = (
opts: {
textAlign: ExcalidrawTextElement["textAlign"];
verticalAlign: ExcalidrawTextElement["verticalAlign"];
},
metrics: {
width: number;
height: number;
},
) => {
return {
x:
opts.textAlign === "center"
? metrics.width / 2
: opts.textAlign === "right"
? metrics.width
: 0,
y: opts.verticalAlign === "middle" ? metrics.height / 2 : 0,
};
};
export const newTextElement = (
opts: {
text: string;
originalText?: string;
fontSize?: number;
fontFamily?: FontFamilyValues;
textAlign?: TextAlign;
verticalAlign?: VerticalAlign;
containerId?: ExcalidrawTextContainer["id"] | null;
lineHeight?: ExcalidrawTextElement["lineHeight"];
autoResize?: ExcalidrawTextElement["autoResize"];
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawTextElement> => {
const fontFamily = opts.fontFamily || DEFAULT_FONT_FAMILY;
const fontSize = opts.fontSize || DEFAULT_FONT_SIZE;
const lineHeight = opts.lineHeight || getLineHeight(fontFamily);
const text = normalizeText(opts.text);
const metrics = measureText(
text,
getFontString({ fontFamily, fontSize }),
lineHeight,
);
const textAlign = opts.textAlign || DEFAULT_TEXT_ALIGN;
const verticalAlign = opts.verticalAlign || DEFAULT_VERTICAL_ALIGN;
const offsets = getTextElementPositionOffsets(
{ textAlign, verticalAlign },
metrics,
);
const textElementProps: ExcalidrawTextElement = {
..._newElementBase<ExcalidrawTextElement>("text", opts),
text,
fontSize,
fontFamily,
textAlign,
verticalAlign,
x: opts.x - offsets.x,
y: opts.y - offsets.y,
width: metrics.width,
height: metrics.height,
containerId: opts.containerId || null,
originalText: opts.originalText ?? text,
autoResize: opts.autoResize ?? true,
lineHeight,
};
const textElement: ExcalidrawTextElement = newElementWith(
textElementProps,
{},
);
return textElement;
};
const getAdjustedDimensions = (
element: ExcalidrawTextElement,
elementsMap: ElementsMap,
nextText: string,
): {
x: number;
y: number;
width: number;
height: number;
} => {
let { width: nextWidth, height: nextHeight } = measureText(
nextText,
getFontString(element),
element.lineHeight,
);
// wrapped text
if (!element.autoResize) {
nextWidth = element.width;
}
const { textAlign, verticalAlign } = element;
let x: number;
let y: number;
if (
textAlign === "center" &&
verticalAlign === VERTICAL_ALIGN.MIDDLE &&
!element.containerId &&
element.autoResize
) {
const prevMetrics = measureText(
element.text,
getFontString(element),
element.lineHeight,
);
const offsets = getTextElementPositionOffsets(element, {
width: nextWidth - prevMetrics.width,
height: nextHeight - prevMetrics.height,
});
x = element.x - offsets.x;
y = element.y - offsets.y;
} else {
const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
const [nextX1, nextY1, nextX2, nextY2] = getResizedElementAbsoluteCoords(
element,
nextWidth,
nextHeight,
false,
);
const deltaX1 = (x1 - nextX1) / 2;
const deltaY1 = (y1 - nextY1) / 2;
const deltaX2 = (x2 - nextX2) / 2;
const deltaY2 = (y2 - nextY2) / 2;
[x, y] = adjustXYWithRotation(
{
s: true,
e: textAlign === "center" || textAlign === "left",
w: textAlign === "center" || textAlign === "right",
},
element.x,
element.y,
element.angle,
deltaX1,
deltaY1,
deltaX2,
deltaY2,
);
}
return {
width: nextWidth,
height: nextHeight,
x: Number.isFinite(x) ? x : element.x,
y: Number.isFinite(y) ? y : element.y,
};
};
const adjustXYWithRotation = (
sides: {
n?: boolean;
e?: boolean;
s?: boolean;
w?: boolean;
},
x: number,
y: number,
angle: number,
deltaX1: number,
deltaY1: number,
deltaX2: number,
deltaY2: number,
): [number, number] => {
const cos = Math.cos(angle);
const sin = Math.sin(angle);
if (sides.e && sides.w) {
x += deltaX1 + deltaX2;
} else if (sides.e) {
x += deltaX1 * (1 + cos);
y += deltaX1 * sin;
x += deltaX2 * (1 - cos);
y += deltaX2 * -sin;
} else if (sides.w) {
x += deltaX1 * (1 - cos);
y += deltaX1 * -sin;
x += deltaX2 * (1 + cos);
y += deltaX2 * sin;
}
if (sides.n && sides.s) {
y += deltaY1 + deltaY2;
} else if (sides.n) {
x += deltaY1 * sin;
y += deltaY1 * (1 - cos);
x += deltaY2 * -sin;
y += deltaY2 * (1 + cos);
} else if (sides.s) {
x += deltaY1 * -sin;
y += deltaY1 * (1 + cos);
x += deltaY2 * sin;
y += deltaY2 * (1 - cos);
}
return [x, y];
};
export const refreshTextDimensions = (
textElement: ExcalidrawTextElement,
container: ExcalidrawTextContainer | null,
elementsMap: ElementsMap,
text = textElement.text,
) => {
if (textElement.isDeleted) {
return;
}
if (container || !textElement.autoResize) {
text = wrapText(
text,
getFontString(textElement),
container
? getBoundTextMaxWidth(container, textElement)
: textElement.width,
);
}
const dimensions = getAdjustedDimensions(textElement, elementsMap, text);
return { text, ...dimensions };
};
export const newFreeDrawElement = (
opts: {
type: "freedraw";
points?: ExcalidrawFreeDrawElement["points"];
simulatePressure: boolean;
pressures?: ExcalidrawFreeDrawElement["pressures"];
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawFreeDrawElement> => {
return {
..._newElementBase<ExcalidrawFreeDrawElement>(opts.type, opts),
points: opts.points || [],
pressures: opts.pressures || [],
simulatePressure: opts.simulatePressure,
lastCommittedPoint: null,
};
};
export const newLinearElement = (
opts: {
type: ExcalidrawLinearElement["type"];
points?: ExcalidrawLinearElement["points"];
polygon?: ExcalidrawLineElement["polygon"];
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawLinearElement> => {
const element = {
..._newElementBase<ExcalidrawLinearElement>(opts.type, opts),
points: opts.points || [],
lastCommittedPoint: null,
startBinding: null,
endBinding: null,
startArrowhead: null,
endArrowhead: null,
};
if (isLineElement(element)) {
const lineElement: NonDeleted<ExcalidrawLineElement> = {
...element,
polygon: opts.polygon ?? false,
};
return lineElement;
}
return element;
};
export const newArrowElement = <T extends boolean>(
opts: {
type: ExcalidrawArrowElement["type"];
startArrowhead?: Arrowhead | null;
endArrowhead?: Arrowhead | null;
points?: ExcalidrawArrowElement["points"];
elbowed?: T;
fixedSegments?: ExcalidrawElbowArrowElement["fixedSegments"] | null;
} & ElementConstructorOpts,
): T extends true
? NonDeleted<ExcalidrawElbowArrowElement>
: NonDeleted<ExcalidrawArrowElement> => {
if (opts.elbowed) {
return {
..._newElementBase<ExcalidrawElbowArrowElement>(opts.type, opts),
points: opts.points || [],
lastCommittedPoint: null,
startBinding: null,
endBinding: null,
startArrowhead: opts.startArrowhead || null,
endArrowhead: opts.endArrowhead || null,
elbowed: true,
fixedSegments: opts.fixedSegments || [],
startIsSpecial: false,
endIsSpecial: false,
} as NonDeleted<ExcalidrawElbowArrowElement>;
}
return {
..._newElementBase<ExcalidrawArrowElement>(opts.type, opts),
points: opts.points || [],
lastCommittedPoint: null,
startBinding: null,
endBinding: null,
startArrowhead: opts.startArrowhead || null,
endArrowhead: opts.endArrowhead || null,
elbowed: false,
} as T extends true
? NonDeleted<ExcalidrawElbowArrowElement>
: NonDeleted<ExcalidrawArrowElement>;
};
export const newImageElement = (
opts: {
type: ExcalidrawImageElement["type"];
status?: ExcalidrawImageElement["status"];
fileId?: ExcalidrawImageElement["fileId"];
scale?: ExcalidrawImageElement["scale"];
crop?: ExcalidrawImageElement["crop"];
} & ElementConstructorOpts,
): NonDeleted<ExcalidrawImageElement> => {
return {
..._newElementBase<ExcalidrawImageElement>("image", opts),
// in the future we'll support changing stroke color for some SVG elements,
// and `transparent` will likely mean "use original colors of the image"
strokeColor: "transparent",
status: opts.status ?? "pending",
fileId: opts.fileId ?? null,
scale: opts.scale ?? [1, 1],
crop: opts.crop ?? null,
};
};
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import {
pointFrom,
pointOnLineSegment,
pointRotateRads,
type Radians,
} from "@excalidraw/math";
import { SIDE_RESIZING_THRESHOLD } from "@excalidraw/common";
import type { GlobalPoint, LineSegment, LocalPoint } from "@excalidraw/math";
import type { AppState, Device, Zoom } from "@excalidraw/excalidraw/types";
import { getElementAbsoluteCoords } from "./bounds";
import {
getTransformHandlesFromCoords,
getTransformHandles,
getOmitSidesForDevice,
canResizeFromSides,
} from "./transformHandles";
import { isImageElement, isLinearElement } from "./typeChecks";
import type { Bounds } from "./bounds";
import type {
TransformHandleType,
TransformHandle,
MaybeTransformHandleType,
} from "./transformHandles";
import type {
ExcalidrawElement,
PointerType,
NonDeletedExcalidrawElement,
ElementsMap,
} from "./types";
const isInsideTransformHandle = (
transformHandle: TransformHandle,
x: number,
y: number,
) =>
x >= transformHandle[0] &&
x <= transformHandle[0] + transformHandle[2] &&
y >= transformHandle[1] &&
y <= transformHandle[1] + transformHandle[3];
export const resizeTest = <Point extends GlobalPoint | LocalPoint>(
element: NonDeletedExcalidrawElement,
elementsMap: ElementsMap,
appState: AppState,
x: number,
y: number,
zoom: Zoom,
pointerType: PointerType,
device: Device,
): MaybeTransformHandleType => {
if (!appState.selectedElementIds[element.id]) {
return false;
}
const { rotation: rotationTransformHandle, ...transformHandles } =
getTransformHandles(
element,
zoom,
elementsMap,
pointerType,
getOmitSidesForDevice(device),
);
if (
rotationTransformHandle &&
isInsideTransformHandle(rotationTransformHandle, x, y)
) {
return "rotation" as TransformHandleType;
}
const filter = Object.keys(transformHandles).filter((key) => {
const transformHandle =
transformHandles[key as Exclude<TransformHandleType, "rotation">]!;
if (!transformHandle) {
return false;
}
return isInsideTransformHandle(transformHandle, x, y);
});
if (filter.length > 0) {
return filter[0] as TransformHandleType;
}
if (canResizeFromSides(device)) {
const [x1, y1, x2, y2, cx, cy] = getElementAbsoluteCoords(
element,
elementsMap,
);
// do not resize from the sides for linear elements with only two points
if (!(isLinearElement(element) && element.points.length <= 2)) {
const SPACING = isImageElement(element)
? 0
: SIDE_RESIZING_THRESHOLD / zoom.value;
const ZOOMED_SIDE_RESIZING_THRESHOLD =
SIDE_RESIZING_THRESHOLD / zoom.value;
const sides = getSelectionBorders(
pointFrom(x1 - SPACING, y1 - SPACING),
pointFrom(x2 + SPACING, y2 + SPACING),
pointFrom(cx, cy),
element.angle,
);
for (const [dir, side] of Object.entries(sides)) {
// test to see if x, y are on the line segment
if (
pointOnLineSegment(
pointFrom(x, y),
side as LineSegment<Point>,
ZOOMED_SIDE_RESIZING_THRESHOLD,
)
) {
return dir as TransformHandleType;
}
}
}
}
return false;
};
export const getElementWithTransformHandleType = (
elements: readonly NonDeletedExcalidrawElement[],
appState: AppState,
scenePointerX: number,
scenePointerY: number,
zoom: Zoom,
pointerType: PointerType,
elementsMap: ElementsMap,
device: Device,
) => {
return elements.reduce((result, element) => {
if (result) {
return result;
}
const transformHandleType = resizeTest(
element,
elementsMap,
appState,
scenePointerX,
scenePointerY,
zoom,
pointerType,
device,
);
return transformHandleType ? { element, transformHandleType } : null;
}, null as { element: NonDeletedExcalidrawElement; transformHandleType: MaybeTransformHandleType } | null);
};
export const getTransformHandleTypeFromCoords = <
Point extends GlobalPoint | LocalPoint,
>(
[x1, y1, x2, y2]: Bounds,
scenePointerX: number,
scenePointerY: number,
zoom: Zoom,
pointerType: PointerType,
device: Device,
): MaybeTransformHandleType => {
const transformHandles = getTransformHandlesFromCoords(
[x1, y1, x2, y2, (x1 + x2) / 2, (y1 + y2) / 2],
0 as Radians,
zoom,
pointerType,
getOmitSidesForDevice(device),
);
const found = Object.keys(transformHandles).find((key) => {
const transformHandle =
transformHandles[key as Exclude<TransformHandleType, "rotation">]!;
return (
transformHandle &&
isInsideTransformHandle(transformHandle, scenePointerX, scenePointerY)
);
});
if (found) {
return found as MaybeTransformHandleType;
}
if (canResizeFromSides(device)) {
const cx = (x1 + x2) / 2;
const cy = (y1 + y2) / 2;
const SPACING = SIDE_RESIZING_THRESHOLD / zoom.value;
const sides = getSelectionBorders(
pointFrom(x1 - SPACING, y1 - SPACING),
pointFrom(x2 + SPACING, y2 + SPACING),
pointFrom(cx, cy),
0 as Radians,
);
for (const [dir, side] of Object.entries(sides)) {
// test to see if x, y are on the line segment
if (
pointOnLineSegment(
pointFrom(scenePointerX, scenePointerY),
side as LineSegment<Point>,
SPACING,
)
) {
return dir as TransformHandleType;
}
}
}
return false;
};
const RESIZE_CURSORS = ["ns", "nesw", "ew", "nwse"];
const rotateResizeCursor = (cursor: string, angle: number) => {
const index = RESIZE_CURSORS.indexOf(cursor);
if (index >= 0) {
const a = Math.round(angle / (Math.PI / 4));
cursor = RESIZE_CURSORS[(index + a) % RESIZE_CURSORS.length];
}
return cursor;
};
/*
* Returns bi-directional cursor for the element being resized
*/
export const getCursorForResizingElement = (resizingElement: {
element?: ExcalidrawElement;
transformHandleType: MaybeTransformHandleType;
}): string => {
const { element, transformHandleType } = resizingElement;
const shouldSwapCursors =
element && Math.sign(element.height) * Math.sign(element.width) === -1;
let cursor = null;
switch (transformHandleType) {
case "n":
case "s":
cursor = "ns";
break;
case "w":
case "e":
cursor = "ew";
break;
case "nw":
case "se":
if (shouldSwapCursors) {
cursor = "nesw";
} else {
cursor = "nwse";
}
break;
case "ne":
case "sw":
if (shouldSwapCursors) {
cursor = "nwse";
} else {
cursor = "nesw";
}
break;
case "rotation":
return "grab";
}
if (cursor && element) {
cursor = rotateResizeCursor(cursor, element.angle);
}
return cursor ? `${cursor}-resize` : "";
};
const getSelectionBorders = <Point extends LocalPoint | GlobalPoint>(
[x1, y1]: Point,
[x2, y2]: Point,
center: Point,
angle: Radians,
) => {
const topLeft = pointRotateRads(pointFrom(x1, y1), center, angle);
const topRight = pointRotateRads(pointFrom(x2, y1), center, angle);
const bottomLeft = pointRotateRads(pointFrom(x1, y2), center, angle);
const bottomRight = pointRotateRads(pointFrom(x2, y2), center, angle);
return {
n: [topLeft, topRight],
e: [topRight, bottomRight],
s: [bottomRight, bottomLeft],
w: [bottomLeft, topLeft],
};
};
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import { arrayToMap, isShallowEqual } from "@excalidraw/common";
import type {
AppState,
InteractiveCanvasAppState,
} from "@excalidraw/excalidraw/types";
import { getElementAbsoluteCoords, getElementBounds } from "./bounds";
import { isElementInViewport } from "./sizeHelpers";
import {
isBoundToContainer,
isFrameLikeElement,
isLinearElement,
} from "./typeChecks";
import {
elementOverlapsWithFrame,
getContainingFrame,
getFrameChildren,
} from "./frame";
import { LinearElementEditor } from "./linearElementEditor";
import { selectGroupsForSelectedElements } from "./groups";
import type {
ElementsMap,
ElementsMapOrArray,
ExcalidrawElement,
NonDeletedExcalidrawElement,
} from "./types";
/**
* Frames and their containing elements are not to be selected at the same time.
* Given an array of selected elements, if there are frames and their containing elements
* we only keep the frames.
* @param selectedElements
*/
export const excludeElementsInFramesFromSelection = <
T extends ExcalidrawElement,
>(
selectedElements: readonly T[],
) => {
const framesInSelection = new Set<T["id"]>();
selectedElements.forEach((element) => {
if (isFrameLikeElement(element)) {
framesInSelection.add(element.id);
}
});
return selectedElements.filter((element) => {
if (element.frameId && framesInSelection.has(element.frameId)) {
return false;
}
return true;
});
};
export const getElementsWithinSelection = (
elements: readonly NonDeletedExcalidrawElement[],
selection: NonDeletedExcalidrawElement,
elementsMap: ElementsMap,
excludeElementsInFrames: boolean = true,
) => {
const [selectionX1, selectionY1, selectionX2, selectionY2] =
getElementAbsoluteCoords(selection, elementsMap);
let elementsInSelection = elements.filter((element) => {
let [elementX1, elementY1, elementX2, elementY2] = getElementBounds(
element,
elementsMap,
);
const containingFrame = getContainingFrame(element, elementsMap);
if (containingFrame) {
const [fx1, fy1, fx2, fy2] = getElementBounds(
containingFrame,
elementsMap,
);
elementX1 = Math.max(fx1, elementX1);
elementY1 = Math.max(fy1, elementY1);
elementX2 = Math.min(fx2, elementX2);
elementY2 = Math.min(fy2, elementY2);
}
return (
element.locked === false &&
element.type !== "selection" &&
!isBoundToContainer(element) &&
selectionX1 <= elementX1 &&
selectionY1 <= elementY1 &&
selectionX2 >= elementX2 &&
selectionY2 >= elementY2
);
});
elementsInSelection = excludeElementsInFrames
? excludeElementsInFramesFromSelection(elementsInSelection)
: elementsInSelection;
elementsInSelection = elementsInSelection.filter((element) => {
const containingFrame = getContainingFrame(element, elementsMap);
if (containingFrame) {
return elementOverlapsWithFrame(element, containingFrame, elementsMap);
}
return true;
});
return elementsInSelection;
};
export const getVisibleAndNonSelectedElements = (
elements: readonly NonDeletedExcalidrawElement[],
selectedElements: readonly NonDeletedExcalidrawElement[],
appState: AppState,
elementsMap: ElementsMap,
) => {
const selectedElementsSet = new Set(
selectedElements.map((element) => element.id),
);
return elements.filter((element) => {
const isVisible = isElementInViewport(
element,
appState.width,
appState.height,
appState,
elementsMap,
);
return !selectedElementsSet.has(element.id) && isVisible;
});
};
// FIXME move this into the editor instance to keep utility methods stateless
export const isSomeElementSelected = (function () {
let lastElements: readonly NonDeletedExcalidrawElement[] | null = null;
let lastSelectedElementIds: AppState["selectedElementIds"] | null = null;
let isSelected: boolean | null = null;
const ret = (
elements: readonly NonDeletedExcalidrawElement[],
appState: Pick<AppState, "selectedElementIds">,
): boolean => {
if (
isSelected != null &&
elements === lastElements &&
appState.selectedElementIds === lastSelectedElementIds
) {
return isSelected;
}
isSelected = elements.some(
(element) => appState.selectedElementIds[element.id],
);
lastElements = elements;
lastSelectedElementIds = appState.selectedElementIds;
return isSelected;
};
ret.clearCache = () => {
lastElements = null;
lastSelectedElementIds = null;
isSelected = null;
};
return ret;
})();
export const getSelectedElements = (
elements: ElementsMapOrArray,
appState: Pick<InteractiveCanvasAppState, "selectedElementIds">,
opts?: {
includeBoundTextElement?: boolean;
includeElementsInFrames?: boolean;
},
) => {
const addedElements = new Set<ExcalidrawElement["id"]>();
const selectedElements: ExcalidrawElement[] = [];
for (const element of elements.values()) {
if (appState.selectedElementIds[element.id]) {
selectedElements.push(element);
addedElements.add(element.id);
continue;
}
if (
opts?.includeBoundTextElement &&
isBoundToContainer(element) &&
appState.selectedElementIds[element?.containerId]
) {
selectedElements.push(element);
addedElements.add(element.id);
continue;
}
}
if (opts?.includeElementsInFrames) {
const elementsToInclude: ExcalidrawElement[] = [];
selectedElements.forEach((element) => {
if (isFrameLikeElement(element)) {
getFrameChildren(elements, element.id).forEach(
(e) => !addedElements.has(e.id) && elementsToInclude.push(e),
);
}
elementsToInclude.push(element);
});
return elementsToInclude;
}
return selectedElements;
};
export const getTargetElements = (
elements: ElementsMapOrArray,
appState: Pick<
AppState,
"selectedElementIds" | "editingTextElement" | "newElement"
>,
) =>
appState.editingTextElement
? [appState.editingTextElement]
: appState.newElement
? [appState.newElement]
: getSelectedElements(elements, appState, {
includeBoundTextElement: true,
});
/**
* returns prevState's selectedElementids if no change from previous, so as to
* retain reference identity for memoization
*/
export const makeNextSelectedElementIds = (
nextSelectedElementIds: AppState["selectedElementIds"],
prevState: Pick<AppState, "selectedElementIds">,
) => {
if (isShallowEqual(prevState.selectedElementIds, nextSelectedElementIds)) {
return prevState.selectedElementIds;
}
return nextSelectedElementIds;
};
const _getLinearElementEditor = (
targetElements: readonly ExcalidrawElement[],
allElements: readonly NonDeletedExcalidrawElement[],
) => {
const linears = targetElements.filter(isLinearElement);
if (linears.length === 1) {
const linear = linears[0];
const boundElements = linear.boundElements?.map((def) => def.id) ?? [];
const onlySingleLinearSelected = targetElements.every(
(el) => el.id === linear.id || boundElements.includes(el.id),
);
if (onlySingleLinearSelected) {
return new LinearElementEditor(linear, arrayToMap(allElements));
}
}
return null;
};
export const getSelectionStateForElements = (
targetElements: readonly ExcalidrawElement[],
allElements: readonly NonDeletedExcalidrawElement[],
appState: AppState,
) => {
return {
selectedLinearElement: _getLinearElementEditor(targetElements, allElements),
...selectGroupsForSelectedElements(
{
editingGroupId: appState.editingGroupId,
selectedElementIds: excludeElementsInFramesFromSelection(
targetElements,
).reduce((acc: Record<ExcalidrawElement["id"], true>, element) => {
if (!isBoundToContainer(element)) {
acc[element.id] = true;
}
return acc;
}, {}),
},
allElements,
appState,
null,
),
};
};
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import type { UIAppState } from "@excalidraw/excalidraw/types";
import { getSelectedElements } from "./selection";
import type { NonDeletedExcalidrawElement } from "./types";
export const showSelectedShapeActions = (
appState: UIAppState,
elements: readonly NonDeletedExcalidrawElement[],
) =>
Boolean(
!appState.viewModeEnabled &&
appState.openDialog?.name !== "elementLinkSelector" &&
((appState.activeTool.type !== "custom" &&
(appState.editingTextElement ||
(appState.activeTool.type !== "selection" &&
appState.activeTool.type !== "lasso" &&
appState.activeTool.type !== "eraser" &&
appState.activeTool.type !== "hand" &&
appState.activeTool.type !== "laser"))) ||
getSelectedElements(elements, appState).length),
);
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import {
SHIFT_LOCKING_ANGLE,
viewportCoordsToSceneCoords,
} from "@excalidraw/common";
import {
normalizeRadians,
radiansBetweenAngles,
radiansDifference,
type Radians,
} from "@excalidraw/math";
import { pointsEqual } from "@excalidraw/math";
import type { AppState, Offsets, Zoom } from "@excalidraw/excalidraw/types";
import { getCommonBounds, getElementBounds } from "./bounds";
import {
isArrowElement,
isFreeDrawElement,
isLinearElement,
} from "./typeChecks";
import type { ElementsMap, ExcalidrawElement } from "./types";
export const INVISIBLY_SMALL_ELEMENT_SIZE = 0.1;
// TODO: remove invisible elements consistently actions, so that invisible elements are not recorded by the store, exported, broadcasted or persisted
// - perhaps could be as part of a standalone 'cleanup' action, in addition to 'finalize'
// - could also be part of `_clearElements`
export const isInvisiblySmallElement = (
element: ExcalidrawElement,
): boolean => {
if (isLinearElement(element) || isFreeDrawElement(element)) {
return (
element.points.length < 2 ||
(element.points.length === 2 &&
isArrowElement(element) &&
pointsEqual(
element.points[0],
element.points[element.points.length - 1],
INVISIBLY_SMALL_ELEMENT_SIZE,
))
);
}
return element.width === 0 && element.height === 0;
};
export const isElementInViewport = (
element: ExcalidrawElement,
width: number,
height: number,
viewTransformations: {
zoom: Zoom;
offsetLeft: number;
offsetTop: number;
scrollX: number;
scrollY: number;
},
elementsMap: ElementsMap,
) => {
const [x1, y1, x2, y2] = getElementBounds(element, elementsMap); // scene coordinates
const topLeftSceneCoords = viewportCoordsToSceneCoords(
{
clientX: viewTransformations.offsetLeft,
clientY: viewTransformations.offsetTop,
},
viewTransformations,
);
const bottomRightSceneCoords = viewportCoordsToSceneCoords(
{
clientX: viewTransformations.offsetLeft + width,
clientY: viewTransformations.offsetTop + height,
},
viewTransformations,
);
return (
topLeftSceneCoords.x <= x2 &&
topLeftSceneCoords.y <= y2 &&
bottomRightSceneCoords.x >= x1 &&
bottomRightSceneCoords.y >= y1
);
};
export const isElementCompletelyInViewport = (
elements: ExcalidrawElement[],
width: number,
height: number,
viewTransformations: {
zoom: Zoom;
offsetLeft: number;
offsetTop: number;
scrollX: number;
scrollY: number;
},
elementsMap: ElementsMap,
padding?: Offsets,
) => {
const [x1, y1, x2, y2] = getCommonBounds(elements, elementsMap); // scene coordinates
const topLeftSceneCoords = viewportCoordsToSceneCoords(
{
clientX: viewTransformations.offsetLeft + (padding?.left || 0),
clientY: viewTransformations.offsetTop + (padding?.top || 0),
},
viewTransformations,
);
const bottomRightSceneCoords = viewportCoordsToSceneCoords(
{
clientX: viewTransformations.offsetLeft + width - (padding?.right || 0),
clientY: viewTransformations.offsetTop + height - (padding?.bottom || 0),
},
viewTransformations,
);
return (
x1 >= topLeftSceneCoords.x &&
y1 >= topLeftSceneCoords.y &&
x2 <= bottomRightSceneCoords.x &&
y2 <= bottomRightSceneCoords.y
);
};
/**
* Makes a perfect shape or diagonal/horizontal/vertical line
*/
export const getPerfectElementSize = (
elementType: AppState["activeTool"]["type"],
width: number,
height: number,
): { width: number; height: number } => {
const absWidth = Math.abs(width);
const absHeight = Math.abs(height);
if (
elementType === "line" ||
elementType === "arrow" ||
elementType === "freedraw"
) {
const lockedAngle =
Math.round(Math.atan(absHeight / absWidth) / SHIFT_LOCKING_ANGLE) *
SHIFT_LOCKING_ANGLE;
if (lockedAngle === 0) {
height = 0;
} else if (lockedAngle === Math.PI / 2) {
width = 0;
} else {
height = absWidth * Math.tan(lockedAngle) * Math.sign(height) || height;
}
} else if (elementType !== "selection") {
height = absWidth * Math.sign(height);
}
return { width, height };
};
export const getLockedLinearCursorAlignSize = (
originX: number,
originY: number,
x: number,
y: number,
customAngle?: number,
) => {
let width = x - originX;
let height = y - originY;
const angle = Math.atan2(height, width) as Radians;
let lockedAngle = (Math.round(angle / SHIFT_LOCKING_ANGLE) *
SHIFT_LOCKING_ANGLE) as Radians;
if (customAngle) {
// If custom angle is provided, we check if the angle is close to the
// custom angle, snap to that if close engough, otherwise snap to the
// higher or lower angle depending on the current angle vs custom angle.
const lower = (Math.floor(customAngle / SHIFT_LOCKING_ANGLE) *
SHIFT_LOCKING_ANGLE) as Radians;
if (
radiansBetweenAngles(
angle,
lower,
(lower + SHIFT_LOCKING_ANGLE) as Radians,
)
) {
if (
radiansDifference(angle, customAngle as Radians) <
SHIFT_LOCKING_ANGLE / 6
) {
lockedAngle = customAngle as Radians;
} else if (
normalizeRadians(angle) > normalizeRadians(customAngle as Radians)
) {
lockedAngle = (lower + SHIFT_LOCKING_ANGLE) as Radians;
} else {
lockedAngle = lower;
}
}
}
if (lockedAngle === 0) {
height = 0;
} else if (lockedAngle === Math.PI / 2) {
width = 0;
} else {
// locked angle line, y = mx + b => mx - y + b = 0
const a1 = Math.tan(lockedAngle);
const b1 = -1;
const c1 = originY - a1 * originX;
// line through cursor, perpendicular to locked angle line
const a2 = -1 / a1;
const b2 = -1;
const c2 = y - a2 * x;
// intersection of the two lines above
const intersectX = (b1 * c2 - b2 * c1) / (a1 * b2 - a2 * b1);
const intersectY = (c1 * a2 - c2 * a1) / (a1 * b2 - a2 * b1);
// delta
width = intersectX - originX;
height = intersectY - originY;
}
return { width, height };
};
export const getNormalizedDimensions = (
element: Pick<ExcalidrawElement, "width" | "height" | "x" | "y">,
): {
width: ExcalidrawElement["width"];
height: ExcalidrawElement["height"];
x: ExcalidrawElement["x"];
y: ExcalidrawElement["y"];
} => {
const ret = {
width: element.width,
height: element.height,
x: element.x,
y: element.y,
};
if (element.width < 0) {
const nextWidth = Math.abs(element.width);
ret.width = nextWidth;
ret.x = element.x - nextWidth;
}
if (element.height < 0) {
const nextHeight = Math.abs(element.height);
ret.height = nextHeight;
ret.y = element.y - nextHeight;
}
return ret;
};
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import { arrayToMapWithIndex } from "@excalidraw/common";
import type { ExcalidrawElement } from "./types";
const normalizeGroupElementOrder = (elements: readonly ExcalidrawElement[]) => {
const origElements: ExcalidrawElement[] = elements.slice();
const sortedElements = new Set<ExcalidrawElement>();
const orderInnerGroups = (
elements: readonly ExcalidrawElement[],
): ExcalidrawElement[] => {
const firstGroupSig = elements[0]?.groupIds?.join("");
const aGroup: ExcalidrawElement[] = [elements[0]];
const bGroup: ExcalidrawElement[] = [];
for (const element of elements.slice(1)) {
if (element.groupIds?.join("") === firstGroupSig) {
aGroup.push(element);
} else {
bGroup.push(element);
}
}
return bGroup.length ? [...aGroup, ...orderInnerGroups(bGroup)] : aGroup;
};
const groupHandledElements = new Map<string, true>();
origElements.forEach((element, idx) => {
if (groupHandledElements.has(element.id)) {
return;
}
if (element.groupIds?.length) {
const topGroup = element.groupIds[element.groupIds.length - 1];
const groupElements = origElements.slice(idx).filter((element) => {
const ret = element?.groupIds?.some((id) => id === topGroup);
if (ret) {
groupHandledElements.set(element!.id, true);
}
return ret;
});
for (const elem of orderInnerGroups(groupElements)) {
sortedElements.add(elem);
}
} else {
sortedElements.add(element);
}
});
// if there's a bug which resulted in losing some of the elements, return
// original instead as that's better than losing data
if (sortedElements.size !== elements.length) {
console.error("normalizeGroupElementOrder: lost some elements... bailing!");
return elements;
}
return [...sortedElements];
};
/**
* In theory, when we have text elements bound to a container, they
* should be right after the container element in the elements array.
* However, this is not guaranteed due to old and potential future bugs.
*
* This function sorts containers and their bound texts together. It prefers
* original z-index of container (i.e. it moves bound text elements after
* containers).
*/
const normalizeBoundElementsOrder = (
elements: readonly ExcalidrawElement[],
) => {
const elementsMap = arrayToMapWithIndex(elements);
const origElements: (ExcalidrawElement | null)[] = elements.slice();
const sortedElements = new Set<ExcalidrawElement>();
origElements.forEach((element, idx) => {
if (!element) {
return;
}
if (element.boundElements?.length) {
sortedElements.add(element);
origElements[idx] = null;
element.boundElements.forEach((boundElement) => {
const child = elementsMap.get(boundElement.id);
if (child && boundElement.type === "text") {
sortedElements.add(child[0]);
origElements[child[1]] = null;
}
});
} else if (element.type === "text" && element.containerId) {
const parent = elementsMap.get(element.containerId);
if (!parent?.[0].boundElements?.find((x) => x.id === element.id)) {
sortedElements.add(element);
origElements[idx] = null;
// if element has a container and container lists it, skip this element
// as it'll be taken care of by the container
}
} else {
sortedElements.add(element);
origElements[idx] = null;
}
});
// if there's a bug which resulted in losing some of the elements, return
// original instead as that's better than losing data
if (sortedElements.size !== elements.length) {
console.error(
"normalizeBoundElementsOrder: lost some elements... bailing!",
);
return elements;
}
return [...sortedElements];
};
export const normalizeElementOrder = (
elements: readonly ExcalidrawElement[],
) => {
return normalizeBoundElementsOrder(normalizeGroupElementOrder(elements));
};
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import {
ARROW_LABEL_FONT_SIZE_TO_MIN_WIDTH_RATIO,
ARROW_LABEL_WIDTH_FRACTION,
BOUND_TEXT_PADDING,
DEFAULT_FONT_SIZE,
TEXT_ALIGN,
VERTICAL_ALIGN,
getFontString,
isProdEnv,
invariant,
} from "@excalidraw/common";
import { pointFrom, pointRotateRads, type Radians } from "@excalidraw/math";
import type { AppState } from "@excalidraw/excalidraw/types";
import type { ExtractSetType } from "@excalidraw/common/utility-types";
import {
resetOriginalContainerCache,
updateOriginalContainerCache,
} from "./containerCache";
import { LinearElementEditor } from "./linearElementEditor";
import { measureText } from "./textMeasurements";
import { wrapText } from "./textWrapping";
import {
isBoundToContainer,
isArrowElement,
isTextElement,
} from "./typeChecks";
import type { Scene } from "./Scene";
import type { MaybeTransformHandleType } from "./transformHandles";
import type {
ElementsMap,
ExcalidrawElement,
ExcalidrawElementType,
ExcalidrawTextContainer,
ExcalidrawTextElement,
ExcalidrawTextElementWithContainer,
NonDeletedExcalidrawElement,
} from "./types";
export const redrawTextBoundingBox = (
textElement: ExcalidrawTextElement,
container: ExcalidrawElement | null,
scene: Scene,
) => {
const elementsMap = scene.getNonDeletedElementsMap();
let maxWidth = undefined;
if (!isProdEnv()) {
invariant(
!container || !isArrowElement(container) || textElement.angle === 0,
"text element angle must be 0 if bound to arrow container",
);
}
const boundTextUpdates = {
x: textElement.x,
y: textElement.y,
text: textElement.text,
width: textElement.width,
height: textElement.height,
angle: (container
? isArrowElement(container)
? 0
: container.angle
: textElement.angle) as Radians,
};
boundTextUpdates.text = textElement.text;
if (container || !textElement.autoResize) {
maxWidth = container
? getBoundTextMaxWidth(container, textElement)
: textElement.width;
boundTextUpdates.text = wrapText(
textElement.originalText,
getFontString(textElement),
maxWidth,
);
}
const metrics = measureText(
boundTextUpdates.text,
getFontString(textElement),
textElement.lineHeight,
);
// Note: only update width for unwrapped text and bound texts (which always have autoResize set to true)
if (textElement.autoResize) {
boundTextUpdates.width = metrics.width;
}
boundTextUpdates.height = metrics.height;
if (container) {
const maxContainerHeight = getBoundTextMaxHeight(
container,
textElement as ExcalidrawTextElementWithContainer,
);
const maxContainerWidth = getBoundTextMaxWidth(container, textElement);
if (!isArrowElement(container) && metrics.height > maxContainerHeight) {
const nextHeight = computeContainerDimensionForBoundText(
metrics.height,
container.type,
);
scene.mutateElement(container, { height: nextHeight });
updateOriginalContainerCache(container.id, nextHeight);
}
if (metrics.width > maxContainerWidth) {
const nextWidth = computeContainerDimensionForBoundText(
metrics.width,
container.type,
);
scene.mutateElement(container, { width: nextWidth });
}
const updatedTextElement = {
...textElement,
...boundTextUpdates,
} as ExcalidrawTextElementWithContainer;
const { x, y } = computeBoundTextPosition(
container,
updatedTextElement,
elementsMap,
);
boundTextUpdates.x = x;
boundTextUpdates.y = y;
}
scene.mutateElement(textElement, boundTextUpdates);
};
export const handleBindTextResize = (
container: NonDeletedExcalidrawElement,
scene: Scene,
transformHandleType: MaybeTransformHandleType,
shouldMaintainAspectRatio = false,
) => {
const elementsMap = scene.getNonDeletedElementsMap();
const boundTextElementId = getBoundTextElementId(container);
if (!boundTextElementId) {
return;
}
resetOriginalContainerCache(container.id);
const textElement = getBoundTextElement(container, elementsMap);
if (textElement && textElement.text) {
if (!container) {
return;
}
let text = textElement.text;
let nextHeight = textElement.height;
let nextWidth = textElement.width;
const maxWidth = getBoundTextMaxWidth(container, textElement);
const maxHeight = getBoundTextMaxHeight(container, textElement);
let containerHeight = container.height;
if (
shouldMaintainAspectRatio ||
(transformHandleType !== "n" && transformHandleType !== "s")
) {
if (text) {
text = wrapText(
textElement.originalText,
getFontString(textElement),
maxWidth,
);
}
const metrics = measureText(
text,
getFontString(textElement),
textElement.lineHeight,
);
nextHeight = metrics.height;
nextWidth = metrics.width;
}
// increase height in case text element height exceeds
if (nextHeight > maxHeight) {
containerHeight = computeContainerDimensionForBoundText(
nextHeight,
container.type,
);
const diff = containerHeight - container.height;
// fix the y coord when resizing from ne/nw/n
const updatedY =
!isArrowElement(container) &&
(transformHandleType === "ne" ||
transformHandleType === "nw" ||
transformHandleType === "n")
? container.y - diff
: container.y;
scene.mutateElement(container, {
height: containerHeight,
y: updatedY,
});
}
scene.mutateElement(textElement, {
text,
width: nextWidth,
height: nextHeight,
});
if (!isArrowElement(container)) {
scene.mutateElement(
textElement,
computeBoundTextPosition(container, textElement, elementsMap),
);
}
}
};
export const computeBoundTextPosition = (
container: ExcalidrawElement,
boundTextElement: ExcalidrawTextElementWithContainer,
elementsMap: ElementsMap,
) => {
if (isArrowElement(container)) {
return LinearElementEditor.getBoundTextElementPosition(
container,
boundTextElement,
elementsMap,
);
}
const containerCoords = getContainerCoords(container);
const maxContainerHeight = getBoundTextMaxHeight(container, boundTextElement);
const maxContainerWidth = getBoundTextMaxWidth(container, boundTextElement);
let x;
let y;
if (boundTextElement.verticalAlign === VERTICAL_ALIGN.TOP) {
y = containerCoords.y;
} else if (boundTextElement.verticalAlign === VERTICAL_ALIGN.BOTTOM) {
y = containerCoords.y + (maxContainerHeight - boundTextElement.height);
} else {
y =
containerCoords.y +
(maxContainerHeight / 2 - boundTextElement.height / 2);
}
if (boundTextElement.textAlign === TEXT_ALIGN.LEFT) {
x = containerCoords.x;
} else if (boundTextElement.textAlign === TEXT_ALIGN.RIGHT) {
x = containerCoords.x + (maxContainerWidth - boundTextElement.width);
} else {
x =
containerCoords.x + (maxContainerWidth / 2 - boundTextElement.width / 2);
}
const angle = (container.angle ?? 0) as Radians;
if (angle !== 0) {
const contentCenter = pointFrom(
containerCoords.x + maxContainerWidth / 2,
containerCoords.y + maxContainerHeight / 2,
);
const textCenter = pointFrom(
x + boundTextElement.width / 2,
y + boundTextElement.height / 2,
);
const [rx, ry] = pointRotateRads(textCenter, contentCenter, angle);
return {
x: rx - boundTextElement.width / 2,
y: ry - boundTextElement.height / 2,
};
}
return { x, y };
};
export const getBoundTextElementId = (container: ExcalidrawElement | null) => {
return container?.boundElements?.length
? container?.boundElements?.find((ele) => ele.type === "text")?.id || null
: null;
};
export const getBoundTextElement = (
element: ExcalidrawElement | null,
elementsMap: ElementsMap,
) => {
if (!element) {
return null;
}
const boundTextElementId = getBoundTextElementId(element);
if (boundTextElementId) {
return (elementsMap.get(boundTextElementId) ||
null) as ExcalidrawTextElementWithContainer | null;
}
return null;
};
export const getContainerElement = (
element: ExcalidrawTextElement | null,
elementsMap: ElementsMap,
): ExcalidrawTextContainer | null => {
if (!element) {
return null;
}
if (element.containerId) {
return (elementsMap.get(element.containerId) ||
null) as ExcalidrawTextContainer | null;
}
return null;
};
export const getContainerCenter = (
container: ExcalidrawElement,
appState: AppState,
elementsMap: ElementsMap,
) => {
if (!isArrowElement(container)) {
return {
x: container.x + container.width / 2,
y: container.y + container.height / 2,
};
}
const points = LinearElementEditor.getPointsGlobalCoordinates(
container,
elementsMap,
);
if (points.length % 2 === 1) {
const index = Math.floor(container.points.length / 2);
const midPoint = LinearElementEditor.getPointGlobalCoordinates(
container,
container.points[index],
elementsMap,
);
return { x: midPoint[0], y: midPoint[1] };
}
const index = container.points.length / 2 - 1;
let midSegmentMidpoint = LinearElementEditor.getEditorMidPoints(
container,
elementsMap,
appState,
)[index];
if (!midSegmentMidpoint) {
midSegmentMidpoint = LinearElementEditor.getSegmentMidPoint(
container,
index + 1,
);
}
return { x: midSegmentMidpoint[0], y: midSegmentMidpoint[1] };
};
export const getContainerCoords = (container: NonDeletedExcalidrawElement) => {
let offsetX = BOUND_TEXT_PADDING;
let offsetY = BOUND_TEXT_PADDING;
if (container.type === "ellipse") {
// The derivation of coordinates is explained in https://github.com/excalidraw/excalidraw/pull/6172
offsetX += (container.width / 2) * (1 - Math.sqrt(2) / 2);
offsetY += (container.height / 2) * (1 - Math.sqrt(2) / 2);
}
// The derivation of coordinates is explained in https://github.com/excalidraw/excalidraw/pull/6265
if (container.type === "diamond") {
offsetX += container.width / 4;
offsetY += container.height / 4;
}
return {
x: container.x + offsetX,
y: container.y + offsetY,
};
};
export const getTextElementAngle = (
textElement: ExcalidrawTextElement,
container: ExcalidrawTextContainer | null,
) => {
if (isArrowElement(container)) {
return 0;
}
if (!container) {
return textElement.angle;
}
return container.angle;
};
export const getBoundTextElementPosition = (
container: ExcalidrawElement,
boundTextElement: ExcalidrawTextElementWithContainer,
elementsMap: ElementsMap,
) => {
if (isArrowElement(container)) {
return LinearElementEditor.getBoundTextElementPosition(
container,
boundTextElement,
elementsMap,
);
}
};
export const shouldAllowVerticalAlign = (
selectedElements: NonDeletedExcalidrawElement[],
elementsMap: ElementsMap,
) => {
return selectedElements.some((element) => {
if (isBoundToContainer(element)) {
const container = getContainerElement(element, elementsMap);
if (isArrowElement(container)) {
return false;
}
return true;
}
return false;
});
};
export const suppportsHorizontalAlign = (
selectedElements: NonDeletedExcalidrawElement[],
elementsMap: ElementsMap,
) => {
return selectedElements.some((element) => {
if (isBoundToContainer(element)) {
const container = getContainerElement(element, elementsMap);
if (isArrowElement(container)) {
return false;
}
return true;
}
return isTextElement(element);
});
};
const VALID_CONTAINER_TYPES = new Set([
"rectangle",
"ellipse",
"diamond",
"arrow",
]);
export const isValidTextContainer = (element: {
type: ExcalidrawElementType;
}) => VALID_CONTAINER_TYPES.has(element.type);
export const computeContainerDimensionForBoundText = (
dimension: number,
containerType: ExtractSetType<typeof VALID_CONTAINER_TYPES>,
) => {
dimension = Math.ceil(dimension);
const padding = BOUND_TEXT_PADDING * 2;
if (containerType === "ellipse") {
return Math.round(((dimension + padding) / Math.sqrt(2)) * 2);
}
if (containerType === "arrow") {
return dimension + padding * 8;
}
if (containerType === "diamond") {
return 2 * (dimension + padding);
}
return dimension + padding;
};
export const getBoundTextMaxWidth = (
container: ExcalidrawElement,
boundTextElement: ExcalidrawTextElement | null,
) => {
const { width } = container;
if (isArrowElement(container)) {
const minWidth =
(boundTextElement?.fontSize ?? DEFAULT_FONT_SIZE) *
ARROW_LABEL_FONT_SIZE_TO_MIN_WIDTH_RATIO;
return Math.max(ARROW_LABEL_WIDTH_FRACTION * width, minWidth);
}
if (container.type === "ellipse") {
// The width of the largest rectangle inscribed inside an ellipse is
// Math.round((ellipse.width / 2) * Math.sqrt(2)) which is derived from
// equation of an ellipse -https://github.com/excalidraw/excalidraw/pull/6172
return Math.round((width / 2) * Math.sqrt(2)) - BOUND_TEXT_PADDING * 2;
}
if (container.type === "diamond") {
// The width of the largest rectangle inscribed inside a rhombus is
// Math.round(width / 2) - https://github.com/excalidraw/excalidraw/pull/6265
return Math.round(width / 2) - BOUND_TEXT_PADDING * 2;
}
return width - BOUND_TEXT_PADDING * 2;
};
export const getBoundTextMaxHeight = (
container: ExcalidrawElement,
boundTextElement: ExcalidrawTextElementWithContainer,
) => {
const { height } = container;
if (isArrowElement(container)) {
const containerHeight = height - BOUND_TEXT_PADDING * 8 * 2;
if (containerHeight <= 0) {
return boundTextElement.height;
}
return height;
}
if (container.type === "ellipse") {
// The height of the largest rectangle inscribed inside an ellipse is
// Math.round((ellipse.height / 2) * Math.sqrt(2)) which is derived from
// equation of an ellipse - https://github.com/excalidraw/excalidraw/pull/6172
return Math.round((height / 2) * Math.sqrt(2)) - BOUND_TEXT_PADDING * 2;
}
if (container.type === "diamond") {
// The height of the largest rectangle inscribed inside a rhombus is
// Math.round(height / 2) - https://github.com/excalidraw/excalidraw/pull/6265
return Math.round(height / 2) - BOUND_TEXT_PADDING * 2;
}
return height - BOUND_TEXT_PADDING * 2;
};
/** retrieves text from text elements and concatenates to a single string */
export const getTextFromElements = (
elements: readonly ExcalidrawElement[],
separator = "\n\n",
) => {
const text = elements
.reduce((acc: string[], element) => {
if (isTextElement(element)) {
acc.push(element.text);
}
return acc;
}, [])
.join(separator);
return text;
};
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import {
BOUND_TEXT_PADDING,
DEFAULT_FONT_SIZE,
DEFAULT_FONT_FAMILY,
getFontString,
isTestEnv,
normalizeEOL,
} from "@excalidraw/common";
import type { FontString, ExcalidrawTextElement } from "./types";
export const measureText = (
text: string,
font: FontString,
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
const _text = text
.split("\n")
// replace empty lines with single space because leading/trailing empty
// lines would be stripped from computation
.map((x) => x || " ")
.join("\n");
const fontSize = parseFloat(font);
const height = getTextHeight(_text, fontSize, lineHeight);
const width = getTextWidth(_text, font);
return { width, height };
};
const DUMMY_TEXT = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".toLocaleUpperCase();
// FIXME rename to getApproxMinContainerWidth
export const getApproxMinLineWidth = (
font: FontString,
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
const maxCharWidth = getMaxCharWidth(font);
if (maxCharWidth === 0) {
return (
measureText(DUMMY_TEXT.split("").join("\n"), font, lineHeight).width +
BOUND_TEXT_PADDING * 2
);
}
return maxCharWidth + BOUND_TEXT_PADDING * 2;
};
export const getMinTextElementWidth = (
font: FontString,
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
return measureText("", font, lineHeight).width + BOUND_TEXT_PADDING * 2;
};
export const isMeasureTextSupported = () => {
const width = getTextWidth(
DUMMY_TEXT,
getFontString({
fontSize: DEFAULT_FONT_SIZE,
fontFamily: DEFAULT_FONT_FAMILY,
}),
);
return width > 0;
};
export const normalizeText = (text: string) => {
return (
normalizeEOL(text)
// replace tabs with spaces so they render and measure correctly
.replace(/\t/g, " ")
);
};
const splitIntoLines = (text: string) => {
return normalizeText(text).split("\n");
};
/**
* To get unitless line-height (if unknown) we can calculate it by dividing
* height-per-line by fontSize.
*/
export const detectLineHeight = (textElement: ExcalidrawTextElement) => {
const lineCount = splitIntoLines(textElement.text).length;
return (textElement.height /
lineCount /
textElement.fontSize) as ExcalidrawTextElement["lineHeight"];
};
/**
* We calculate the line height from the font size and the unitless line height,
* aligning with the W3C spec.
*/
export const getLineHeightInPx = (
fontSize: ExcalidrawTextElement["fontSize"],
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
return fontSize * lineHeight;
};
// FIXME rename to getApproxMinContainerHeight
export const getApproxMinLineHeight = (
fontSize: ExcalidrawTextElement["fontSize"],
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
return getLineHeightInPx(fontSize, lineHeight) + BOUND_TEXT_PADDING * 2;
};
let textMetricsProvider: TextMetricsProvider | undefined;
/**
* Set a custom text metrics provider.
*
* Useful for overriding the width calculation algorithm where canvas API is not available / desired.
*/
export const setCustomTextMetricsProvider = (provider: TextMetricsProvider) => {
textMetricsProvider = provider;
};
export interface TextMetricsProvider {
getLineWidth(text: string, fontString: FontString): number;
}
class CanvasTextMetricsProvider implements TextMetricsProvider {
private canvas: HTMLCanvasElement;
constructor() {
this.canvas = document.createElement("canvas");
}
/**
* We need to use the advance width as that's the closest thing to the browser wrapping algo, hence using it for:
* - text wrapping
* - wysiwyg editor (+padding)
*
* > The advance width is the distance between the glyph's initial pen position and the next glyph's initial pen position.
*/
public getLineWidth(text: string, fontString: FontString): number {
const context = this.canvas.getContext("2d")!;
context.font = fontString;
const metrics = context.measureText(text);
const advanceWidth = metrics.width;
// since in test env the canvas measureText algo
// doesn't measure text and instead just returns number of
// characters hence we assume that each letteris 10px
if (isTestEnv()) {
return advanceWidth * 10;
}
return advanceWidth;
}
}
export const getLineWidth = (text: string, font: FontString) => {
if (!textMetricsProvider) {
textMetricsProvider = new CanvasTextMetricsProvider();
}
return textMetricsProvider.getLineWidth(text, font);
};
export const getTextWidth = (text: string, font: FontString) => {
const lines = splitIntoLines(text);
let width = 0;
lines.forEach((line) => {
width = Math.max(width, getLineWidth(line, font));
});
return width;
};
export const getTextHeight = (
text: string,
fontSize: number,
lineHeight: ExcalidrawTextElement["lineHeight"],
) => {
const lineCount = splitIntoLines(text).length;
return getLineHeightInPx(fontSize, lineHeight) * lineCount;
};
export const charWidth = (() => {
const cachedCharWidth: { [key: FontString]: Array<number> } = {};
const calculate = (char: string, font: FontString) => {
const unicode = char.charCodeAt(0);
if (!cachedCharWidth[font]) {
cachedCharWidth[font] = [];
}
if (!cachedCharWidth[font][unicode]) {
const width = getLineWidth(char, font);
cachedCharWidth[font][unicode] = width;
}
return cachedCharWidth[font][unicode];
};
const getCache = (font: FontString) => {
return cachedCharWidth[font];
};
const clearCache = (font: FontString) => {
cachedCharWidth[font] = [];
};
return {
calculate,
getCache,
clearCache,
};
})();
export const getMinCharWidth = (font: FontString) => {
const cache = charWidth.getCache(font);
if (!cache) {
return 0;
}
const cacheWithOutEmpty = cache.filter((val) => val !== undefined);
return Math.min(...cacheWithOutEmpty);
};
export const getMaxCharWidth = (font: FontString) => {
const cache = charWidth.getCache(font);
if (!cache) {
return 0;
}
const cacheWithOutEmpty = cache.filter((val) => val !== undefined);
return Math.max(...cacheWithOutEmpty);
};
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import { isDevEnv, isTestEnv } from "@excalidraw/common";
import { charWidth, getLineWidth } from "./textMeasurements";
import type { FontString } from "./types";
let cachedCjkRegex: RegExp | undefined;
let cachedLineBreakRegex: RegExp | undefined;
let cachedEmojiRegex: RegExp | undefined;
/**
* Test if a given text contains any CJK characters (including symbols, punctuation, etc,).
*/
export const containsCJK = (text: string) => {
if (!cachedCjkRegex) {
cachedCjkRegex = Regex.class(...Object.values(CJK));
}
return cachedCjkRegex.test(text);
};
const getLineBreakRegex = () => {
if (!cachedLineBreakRegex) {
try {
cachedLineBreakRegex = getLineBreakRegexAdvanced();
} catch {
cachedLineBreakRegex = getLineBreakRegexSimple();
}
}
return cachedLineBreakRegex;
};
const getEmojiRegex = () => {
if (!cachedEmojiRegex) {
cachedEmojiRegex = getEmojiRegexUnicode();
}
return cachedEmojiRegex;
};
/**
* Common symbols used across different languages.
*/
const COMMON = {
/**
* Natural breaking points for any grammars.
*
* Hello world
* ↑ BREAK ALWAYS " " → ["Hello", " ", "world"]
* Hello-world
* ↑ BREAK AFTER "-" → ["Hello-", "world"]
*/
WHITESPACE: /\s/u,
HYPHEN: /-/u,
/**
* Generally do not break, unless closed symbol is followed by an opening symbol.
*
* Also, western punctation is often used in modern Korean and expects to be treated
* similarly to the CJK opening and closing symbols.
*
* Hello(한글)→ ["Hello", "(한", "글)"]
* ↑ BREAK BEFORE "("
* ↑ BREAK AFTER ")"
*/
OPENING: /<\(\[\{/u,
CLOSING: />\)\]\}.,:;!\?\//u,
};
/**
* Characters and symbols used in Chinese, Japanese and Korean.
*/
const CJK = {
/**
* Every CJK breaks before and after, unless it's paired with an opening or closing symbol.
*
* Does not include every possible char used in CJK texts, such as currency, parentheses or punctuation.
*/
CHAR: /\p{Script=Han}\p{Script=Hiragana}\p{Script=Katakana}\p{Script=Hangul}/u,
/**
* Opening and closing CJK punctuation breaks before and after all such characters (in case of many),
* and creates pairs with neighboring characters.
*
* Hello た。→ ["Hello", "た。"]
* ↑ DON'T BREAK "た。"
* * Hello「た」 World → ["Hello", "「た」", "World"]
* ↑ DON'T BREAK "「た"
* ↑ DON'T BREAK "た"
* ↑ BREAK BEFORE "「"
* ↑ BREAK AFTER "」"
*/
// eslint-disable-next-line prettier/prettier
OPENING://u,
CLOSING: //u,
/**
* Currency symbols break before, not after
*
* Price¥100 → ["Price", "¥100"]
* ↑ BREAK BEFORE "¥"
*/
CURRENCY: //u,
};
const EMOJI = {
FLAG: /\p{RI}\p{RI}/u,
JOINER:
/(?:\p{Emoji_Modifier}|\uFE0F\u20E3?|[\u{E0020}-\u{E007E}]+\u{E007F})?/u,
ZWJ: /\u200D/u,
ANY: /[\p{Emoji}]/u,
MOST: /[\p{Extended_Pictographic}\p{Emoji_Presentation}]/u,
};
/**
* Simple fallback for browsers (mainly Safari < 16.4) that don't support "Lookbehind assertion".
*
* Browser support as of 10/2024:
* - 91% Lookbehind assertion https://caniuse.com/mdn-javascript_regular_expressions_lookbehind_assertion
* - 94% Unicode character class escape https://caniuse.com/mdn-javascript_regular_expressions_unicode_character_class_escape
*
* Does not include advanced CJK breaking rules, but covers most of the core cases, especially for latin.
*/
const getLineBreakRegexSimple = () =>
Regex.or(
getEmojiRegex(),
Break.On(COMMON.HYPHEN, COMMON.WHITESPACE, CJK.CHAR),
);
/**
* Specifies the line breaking rules based for alphabetic-based languages,
* Chinese, Japanese, Korean and Emojis.
*
* "Hello-world" → ["Hello-", "world"]
* "Hello 「世界。」🌎🗺" → ["Hello", " ", "「世", "界。」", "🌎", "🗺"]
*/
const getLineBreakRegexAdvanced = () =>
Regex.or(
// Unicode-defined regex for (multi-codepoint) Emojis
getEmojiRegex(),
// Rules for whitespace and hyphen
Break.Before(COMMON.WHITESPACE).Build(),
Break.After(COMMON.WHITESPACE, COMMON.HYPHEN).Build(),
// Rules for CJK (chars, symbols, currency)
Break.Before(CJK.CHAR, CJK.CURRENCY)
.NotPrecededBy(COMMON.OPENING, CJK.OPENING)
.Build(),
Break.After(CJK.CHAR)
.NotFollowedBy(COMMON.HYPHEN, COMMON.CLOSING, CJK.CLOSING)
.Build(),
// Rules for opening and closing punctuation
Break.BeforeMany(CJK.OPENING).NotPrecededBy(COMMON.OPENING).Build(),
Break.AfterMany(CJK.CLOSING).NotFollowedBy(COMMON.CLOSING).Build(),
Break.AfterMany(COMMON.CLOSING).FollowedBy(COMMON.OPENING).Build(),
);
/**
* Matches various emoji types.
*
* 1. basic emojis (😀, 🌍)
* 2. flags (🇨🇿)
* 3. multi-codepoint emojis:
* - skin tones (👍🏽)
* - variation selectors (☂️)
* - keycaps (1️⃣)
* - tag sequences (🏴󠁧󠁢󠁥󠁮󠁧󠁿)
* - emoji sequences (👨‍👩‍👧‍👦, 👩‍🚀, 🏳️‍🌈)
*
* Unicode points:
* - \uFE0F: presentation selector
* - \u20E3: enclosing keycap
* - \u200D: zero width joiner
* - \u{E0020}-\u{E007E}: tags
* - \u{E007F}: cancel tag
*
* @see https://unicode.org/reports/tr51/#EBNF_and_Regex, with changes:
* - replaced \p{Emoji} with [\p{Extended_Pictographic}\p{Emoji_Presentation}], see more in `should tokenize emojis mixed with mixed text` test
* - replaced \p{Emod} with \p{Emoji_Modifier} as some engines do not understand the abbreviation (i.e. https://devina.io/redos-checker)
*/
const getEmojiRegexUnicode = () =>
Regex.group(
Regex.or(
EMOJI.FLAG,
Regex.and(
EMOJI.MOST,
EMOJI.JOINER,
Regex.build(
`(?:${EMOJI.ZWJ.source}(?:${EMOJI.FLAG.source}|${EMOJI.ANY.source}${EMOJI.JOINER.source}))*`,
),
),
),
);
/**
* Regex utilities for unicode character classes.
*/
const Regex = {
/**
* Builds a regex from a string.
*/
build: (regex: string): RegExp => new RegExp(regex, "u"),
/**
* Joins regexes into a single string.
*/
join: (...regexes: RegExp[]): string => regexes.map((x) => x.source).join(""),
/**
* Joins regexes into a single regex as with "and" operator.
*/
and: (...regexes: RegExp[]): RegExp => Regex.build(Regex.join(...regexes)),
/**
* Joins regexes into a single regex with "or" operator.
*/
or: (...regexes: RegExp[]): RegExp =>
Regex.build(regexes.map((x) => x.source).join("|")),
/**
* Puts regexes into a matching group.
*/
group: (...regexes: RegExp[]): RegExp =>
Regex.build(`(${Regex.join(...regexes)})`),
/**
* Puts regexes into a character class.
*/
class: (...regexes: RegExp[]): RegExp =>
Regex.build(`[${Regex.join(...regexes)}]`),
};
/**
* Human-readable lookahead and lookbehind utilities for defining line break
* opportunities between pairs of character classes.
*/
const Break = {
/**
* Break on the given class of characters.
*/
On: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
return Regex.build(`([${joined}])`);
},
/**
* Break before the given class of characters.
*/
Before: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?=[${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"FollowedBy"
>;
},
/**
* Break after the given class of characters.
*/
After: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?<=[${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"PreceededBy"
>;
},
/**
* Break before one or multiple characters of the same class.
*/
BeforeMany: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?<![${joined}])(?=[${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"FollowedBy"
>;
},
/**
* Break after one or multiple character from the same class.
*/
AfterMany: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?<=[${joined}])(?![${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"PreceededBy"
>;
},
/**
* Do not break before the given class of characters.
*/
NotBefore: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?![${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"NotFollowedBy"
>;
},
/**
* Do not break after the given class of characters.
*/
NotAfter: (...regexes: RegExp[]) => {
const joined = Regex.join(...regexes);
const builder = () => Regex.build(`(?<![${joined}])`);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"NotPrecededBy"
>;
},
Chain: (rootBuilder: () => RegExp) => ({
/**
* Build the root regex.
*/
Build: rootBuilder,
/**
* Specify additional class of characters that should precede the root regex.
*/
PreceededBy: (...regexes: RegExp[]) => {
const root = rootBuilder();
const preceeded = Break.After(...regexes).Build();
const builder = () => Regex.and(preceeded, root);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"PreceededBy"
>;
},
/**
* Specify additional class of characters that should follow the root regex.
*/
FollowedBy: (...regexes: RegExp[]) => {
const root = rootBuilder();
const followed = Break.Before(...regexes).Build();
const builder = () => Regex.and(root, followed);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"FollowedBy"
>;
},
/**
* Specify additional class of characters that should not precede the root regex.
*/
NotPrecededBy: (...regexes: RegExp[]) => {
const root = rootBuilder();
const notPreceeded = Break.NotAfter(...regexes).Build();
const builder = () => Regex.and(notPreceeded, root);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"NotPrecededBy"
>;
},
/**
* Specify additional class of characters that should not follow the root regex.
*/
NotFollowedBy: (...regexes: RegExp[]) => {
const root = rootBuilder();
const notFollowed = Break.NotBefore(...regexes).Build();
const builder = () => Regex.and(root, notFollowed);
return Break.Chain(builder) as Omit<
ReturnType<typeof Break.Chain>,
"NotFollowedBy"
>;
},
}),
};
/**
* Breaks the line into the tokens based on the found line break opporutnities.
*/
export const parseTokens = (line: string) => {
const breakLineRegex = getLineBreakRegex();
// normalizing to single-codepoint composed chars due to canonical equivalence
// of multi-codepoint versions for chars like č, で (~ so that we don't break a line in between c and ˇ)
// filtering due to multi-codepoint chars like 👨‍👩‍👧‍👦, 👩🏽‍🦰
return line.normalize("NFC").split(breakLineRegex).filter(Boolean);
};
/**
* Wraps the original text into the lines based on the given width.
*/
export const wrapText = (
text: string,
font: FontString,
maxWidth: number,
): string => {
// if maxWidth is not finite or NaN which can happen in case of bugs in
// computation, we need to make sure we don't continue as we'll end up
// in an infinite loop
if (!Number.isFinite(maxWidth) || maxWidth < 0) {
return text;
}
const lines: Array<string> = [];
const originalLines = text.split("\n");
for (const originalLine of originalLines) {
const currentLineWidth = getLineWidth(originalLine, font);
if (currentLineWidth <= maxWidth) {
lines.push(originalLine);
continue;
}
const wrappedLine = wrapLine(originalLine, font, maxWidth);
lines.push(...wrappedLine);
}
return lines.join("\n");
};
/**
* Wraps the original line into the lines based on the given width.
*/
const wrapLine = (
line: string,
font: FontString,
maxWidth: number,
): string[] => {
const lines: Array<string> = [];
const tokens = parseTokens(line);
const tokenIterator = tokens[Symbol.iterator]();
let currentLine = "";
let currentLineWidth = 0;
let iterator = tokenIterator.next();
while (!iterator.done) {
const token = iterator.value;
const testLine = currentLine + token;
// cache single codepoint whitespace, CJK or emoji width calc. as kerning should not apply here
const testLineWidth = isSingleCharacter(token)
? currentLineWidth + charWidth.calculate(token, font)
: getLineWidth(testLine, font);
// build up the current line, skipping length check for possibly trailing whitespaces
if (/\s/.test(token) || testLineWidth <= maxWidth) {
currentLine = testLine;
currentLineWidth = testLineWidth;
iterator = tokenIterator.next();
continue;
}
// current line is empty => just the token (word) is longer than `maxWidth` and needs to be wrapped
if (!currentLine) {
const wrappedWord = wrapWord(token, font, maxWidth);
const trailingLine = wrappedWord[wrappedWord.length - 1] ?? "";
const precedingLines = wrappedWord.slice(0, -1);
lines.push(...precedingLines);
// trailing line of the wrapped word might still be joined with next token/s
currentLine = trailingLine;
currentLineWidth = getLineWidth(trailingLine, font);
iterator = tokenIterator.next();
} else {
// push & reset, but don't iterate on the next token, as we didn't use it yet!
lines.push(currentLine.trimEnd());
// purposefully not iterating and not setting `currentLine` to `token`, so that we could use a simple !currentLine check above
currentLine = "";
currentLineWidth = 0;
}
}
// iterator done, push the trailing line if exists
if (currentLine) {
const trailingLine = trimLine(currentLine, font, maxWidth);
lines.push(trailingLine);
}
return lines;
};
/**
* Wraps the word into the lines based on the given width.
*/
const wrapWord = (
word: string,
font: FontString,
maxWidth: number,
): Array<string> => {
// multi-codepoint emojis are already broken apart and shouldn't be broken further
if (getEmojiRegex().test(word)) {
return [word];
}
satisfiesWordInvariant(word);
const lines: Array<string> = [];
const chars = Array.from(word);
let currentLine = "";
let currentLineWidth = 0;
for (const char of chars) {
const _charWidth = charWidth.calculate(char, font);
const testLineWidth = currentLineWidth + _charWidth;
if (testLineWidth <= maxWidth) {
currentLine = currentLine + char;
currentLineWidth = testLineWidth;
continue;
}
if (currentLine) {
lines.push(currentLine);
}
currentLine = char;
currentLineWidth = _charWidth;
}
if (currentLine) {
lines.push(currentLine);
}
return lines;
};
/**
* Similarly to browsers, does not trim all trailing whitespaces, but only those exceeding the `maxWidth`.
*/
const trimLine = (line: string, font: FontString, maxWidth: number) => {
const shouldTrimWhitespaces = getLineWidth(line, font) > maxWidth;
if (!shouldTrimWhitespaces) {
return line;
}
// defensively default to `trimeEnd` in case the regex does not match
let [, trimmedLine, whitespaces] = line.match(/^(.+?)(\s+)$/) ?? [
line,
line.trimEnd(),
"",
];
let trimmedLineWidth = getLineWidth(trimmedLine, font);
for (const whitespace of Array.from(whitespaces)) {
const _charWidth = charWidth.calculate(whitespace, font);
const testLineWidth = trimmedLineWidth + _charWidth;
if (testLineWidth > maxWidth) {
break;
}
trimmedLine = trimmedLine + whitespace;
trimmedLineWidth = testLineWidth;
}
return trimmedLine;
};
/**
* Check if the given string is a single character.
*
* Handles multi-byte chars (é, 中) and purposefully does not handle multi-codepoint char (👨‍👩‍👧‍👦, 👩🏽‍🦰).
*/
const isSingleCharacter = (maybeSingleCharacter: string) => {
return (
maybeSingleCharacter.codePointAt(0) !== undefined &&
maybeSingleCharacter.codePointAt(1) === undefined
);
};
/**
* Invariant for the word wrapping algorithm.
*/
const satisfiesWordInvariant = (word: string) => {
if (isTestEnv() || isDevEnv()) {
if (/\s/.test(word)) {
throw new Error("Word should not contain any whitespaces!");
}
}
};
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import {
DEFAULT_TRANSFORM_HANDLE_SPACING,
isAndroid,
isIOS,
} from "@excalidraw/common";
import { pointFrom, pointRotateRads } from "@excalidraw/math";
import type { Radians } from "@excalidraw/math";
import type {
Device,
InteractiveCanvasAppState,
Zoom,
} from "@excalidraw/excalidraw/types";
import { getElementAbsoluteCoords } from "./bounds";
import {
isElbowArrow,
isFrameLikeElement,
isImageElement,
isLinearElement,
} from "./typeChecks";
import type { Bounds } from "./bounds";
import type {
ElementsMap,
ExcalidrawElement,
NonDeletedExcalidrawElement,
PointerType,
} from "./types";
export type TransformHandleDirection =
| "n"
| "s"
| "w"
| "e"
| "nw"
| "ne"
| "sw"
| "se";
export type TransformHandleType = TransformHandleDirection | "rotation";
export type TransformHandle = Bounds;
export type TransformHandles = Partial<{
[T in TransformHandleType]: TransformHandle;
}>;
export type MaybeTransformHandleType = TransformHandleType | false;
const transformHandleSizes: { [k in PointerType]: number } = {
mouse: 8,
pen: 16,
touch: 28,
};
const ROTATION_RESIZE_HANDLE_GAP = 16;
export const DEFAULT_OMIT_SIDES = {
e: true,
s: true,
n: true,
w: true,
};
export const OMIT_SIDES_FOR_MULTIPLE_ELEMENTS = {
e: true,
s: true,
n: true,
w: true,
};
export const OMIT_SIDES_FOR_FRAME = {
e: true,
s: true,
n: true,
w: true,
rotation: true,
};
const OMIT_SIDES_FOR_LINE_SLASH = {
e: true,
s: true,
n: true,
w: true,
nw: true,
se: true,
};
const OMIT_SIDES_FOR_LINE_BACKSLASH = {
e: true,
s: true,
n: true,
w: true,
};
const generateTransformHandle = (
x: number,
y: number,
width: number,
height: number,
cx: number,
cy: number,
angle: Radians,
): TransformHandle => {
const [xx, yy] = pointRotateRads(
pointFrom(x + width / 2, y + height / 2),
pointFrom(cx, cy),
angle,
);
return [xx - width / 2, yy - height / 2, width, height];
};
export const canResizeFromSides = (device: Device) => {
if (device.viewport.isMobile) {
return false;
}
if (device.isTouchScreen && (isAndroid || isIOS)) {
return false;
}
return true;
};
export const getOmitSidesForDevice = (device: Device) => {
if (canResizeFromSides(device)) {
return DEFAULT_OMIT_SIDES;
}
return {};
};
export const getTransformHandlesFromCoords = (
[x1, y1, x2, y2, cx, cy]: [number, number, number, number, number, number],
angle: Radians,
zoom: Zoom,
pointerType: PointerType,
omitSides: { [T in TransformHandleType]?: boolean } = {},
margin = 4,
spacing = DEFAULT_TRANSFORM_HANDLE_SPACING,
): TransformHandles => {
const size = transformHandleSizes[pointerType];
const handleWidth = size / zoom.value;
const handleHeight = size / zoom.value;
const handleMarginX = size / zoom.value;
const handleMarginY = size / zoom.value;
const width = x2 - x1;
const height = y2 - y1;
const dashedLineMargin = margin / zoom.value;
const centeringOffset = (size - spacing * 2) / (2 * zoom.value);
const transformHandles: TransformHandles = {
nw: omitSides.nw
? undefined
: generateTransformHandle(
x1 - dashedLineMargin - handleMarginX + centeringOffset,
y1 - dashedLineMargin - handleMarginY + centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
),
ne: omitSides.ne
? undefined
: generateTransformHandle(
x2 + dashedLineMargin - centeringOffset,
y1 - dashedLineMargin - handleMarginY + centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
),
sw: omitSides.sw
? undefined
: generateTransformHandle(
x1 - dashedLineMargin - handleMarginX + centeringOffset,
y2 + dashedLineMargin - centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
),
se: omitSides.se
? undefined
: generateTransformHandle(
x2 + dashedLineMargin - centeringOffset,
y2 + dashedLineMargin - centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
),
rotation: omitSides.rotation
? undefined
: generateTransformHandle(
x1 + width / 2 - handleWidth / 2,
y1 -
dashedLineMargin -
handleMarginY +
centeringOffset -
ROTATION_RESIZE_HANDLE_GAP / zoom.value,
handleWidth,
handleHeight,
cx,
cy,
angle,
),
};
// We only want to show height handles (all cardinal directions) above a certain size
// Note: we render using "mouse" size so we should also use "mouse" size for this check
const minimumSizeForEightHandles =
(5 * transformHandleSizes.mouse) / zoom.value;
if (Math.abs(width) > minimumSizeForEightHandles) {
if (!omitSides.n) {
transformHandles.n = generateTransformHandle(
x1 + width / 2 - handleWidth / 2,
y1 - dashedLineMargin - handleMarginY + centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
);
}
if (!omitSides.s) {
transformHandles.s = generateTransformHandle(
x1 + width / 2 - handleWidth / 2,
y2 + dashedLineMargin - centeringOffset,
handleWidth,
handleHeight,
cx,
cy,
angle,
);
}
}
if (Math.abs(height) > minimumSizeForEightHandles) {
if (!omitSides.w) {
transformHandles.w = generateTransformHandle(
x1 - dashedLineMargin - handleMarginX + centeringOffset,
y1 + height / 2 - handleHeight / 2,
handleWidth,
handleHeight,
cx,
cy,
angle,
);
}
if (!omitSides.e) {
transformHandles.e = generateTransformHandle(
x2 + dashedLineMargin - centeringOffset,
y1 + height / 2 - handleHeight / 2,
handleWidth,
handleHeight,
cx,
cy,
angle,
);
}
}
return transformHandles;
};
export const getTransformHandles = (
element: ExcalidrawElement,
zoom: Zoom,
elementsMap: ElementsMap,
pointerType: PointerType = "mouse",
omitSides: { [T in TransformHandleType]?: boolean } = DEFAULT_OMIT_SIDES,
): TransformHandles => {
// so that when locked element is selected (especially when you toggle lock
// via keyboard) the locked element is visually distinct, indicating
// you can't move/resize
if (
element.locked ||
// Elbow arrows cannot be rotated
isElbowArrow(element)
) {
return {};
}
if (element.type === "freedraw" || isLinearElement(element)) {
if (element.points.length === 2) {
// only check the last point because starting point is always (0,0)
const [, p1] = element.points;
if (p1[0] === 0 || p1[1] === 0) {
omitSides = OMIT_SIDES_FOR_LINE_BACKSLASH;
} else if (p1[0] > 0 && p1[1] < 0) {
omitSides = OMIT_SIDES_FOR_LINE_SLASH;
} else if (p1[0] > 0 && p1[1] > 0) {
omitSides = OMIT_SIDES_FOR_LINE_BACKSLASH;
} else if (p1[0] < 0 && p1[1] > 0) {
omitSides = OMIT_SIDES_FOR_LINE_SLASH;
} else if (p1[0] < 0 && p1[1] < 0) {
omitSides = OMIT_SIDES_FOR_LINE_BACKSLASH;
}
}
} else if (isFrameLikeElement(element)) {
omitSides = {
...omitSides,
rotation: true,
};
}
const margin = isLinearElement(element)
? DEFAULT_TRANSFORM_HANDLE_SPACING + 8
: isImageElement(element)
? 0
: DEFAULT_TRANSFORM_HANDLE_SPACING;
return getTransformHandlesFromCoords(
getElementAbsoluteCoords(element, elementsMap, true),
element.angle,
zoom,
pointerType,
omitSides,
margin,
isImageElement(element) ? 0 : undefined,
);
};
export const shouldShowBoundingBox = (
elements: readonly NonDeletedExcalidrawElement[],
appState: InteractiveCanvasAppState,
) => {
if (appState.selectedLinearElement?.isEditing) {
return false;
}
if (elements.length > 1) {
return true;
}
const element = elements[0];
if (isElbowArrow(element)) {
// Elbow arrows cannot be resized as single selected elements
return false;
}
if (!isLinearElement(element)) {
return true;
}
return element.points.length > 2;
};
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import { ROUNDNESS, assertNever } from "@excalidraw/common";
import { pointsEqual } from "@excalidraw/math";
import type { ElementOrToolType } from "@excalidraw/excalidraw/types";
import type { MarkNonNullable } from "@excalidraw/common/utility-types";
import type { Bounds } from "./bounds";
import type {
ExcalidrawElement,
ExcalidrawTextElement,
ExcalidrawEmbeddableElement,
ExcalidrawLinearElement,
ExcalidrawBindableElement,
ExcalidrawFreeDrawElement,
InitializedExcalidrawImageElement,
ExcalidrawImageElement,
ExcalidrawTextElementWithContainer,
ExcalidrawTextContainer,
ExcalidrawFrameElement,
RoundnessType,
ExcalidrawFrameLikeElement,
ExcalidrawElementType,
ExcalidrawIframeElement,
ExcalidrawIframeLikeElement,
ExcalidrawMagicFrameElement,
ExcalidrawArrowElement,
ExcalidrawElbowArrowElement,
ExcalidrawLineElement,
PointBinding,
FixedPointBinding,
ExcalidrawFlowchartNodeElement,
ExcalidrawLinearElementSubType,
} from "./types";
export const isInitializedImageElement = (
element: ExcalidrawElement | null,
): element is InitializedExcalidrawImageElement => {
return !!element && element.type === "image" && !!element.fileId;
};
export const isImageElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawImageElement => {
return !!element && element.type === "image";
};
export const isEmbeddableElement = (
element: ExcalidrawElement | null | undefined,
): element is ExcalidrawEmbeddableElement => {
return !!element && element.type === "embeddable";
};
export const isIframeElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawIframeElement => {
return !!element && element.type === "iframe";
};
export const isIframeLikeElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawIframeLikeElement => {
return (
!!element && (element.type === "iframe" || element.type === "embeddable")
);
};
export const isTextElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawTextElement => {
return element != null && element.type === "text";
};
export const isFrameElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawFrameElement => {
return element != null && element.type === "frame";
};
export const isMagicFrameElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawMagicFrameElement => {
return element != null && element.type === "magicframe";
};
export const isFrameLikeElement = (
element: ExcalidrawElement | null,
): element is ExcalidrawFrameLikeElement => {
return (
element != null &&
(element.type === "frame" || element.type === "magicframe")
);
};
export const isFreeDrawElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawFreeDrawElement => {
return element != null && isFreeDrawElementType(element.type);
};
export const isFreeDrawElementType = (
elementType: ExcalidrawElementType,
): boolean => {
return elementType === "freedraw";
};
export const isLinearElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawLinearElement => {
return element != null && isLinearElementType(element.type);
};
export const isLineElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawLineElement => {
return element != null && element.type === "line";
};
export const isArrowElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawArrowElement => {
return element != null && element.type === "arrow";
};
export const isElbowArrow = (
element?: ExcalidrawElement,
): element is ExcalidrawElbowArrowElement => {
return isArrowElement(element) && element.elbowed;
};
/**
* sharp or curved arrow, but not elbow
*/
export const isSimpleArrow = (
element?: ExcalidrawElement,
): element is ExcalidrawArrowElement => {
return isArrowElement(element) && !element.elbowed;
};
export const isSharpArrow = (
element?: ExcalidrawElement,
): element is ExcalidrawArrowElement => {
return isArrowElement(element) && !element.elbowed && !element.roundness;
};
export const isCurvedArrow = (
element?: ExcalidrawElement,
): element is ExcalidrawArrowElement => {
return (
isArrowElement(element) && !element.elbowed && element.roundness !== null
);
};
export const isLinearElementType = (
elementType: ElementOrToolType,
): boolean => {
return (
elementType === "arrow" || elementType === "line" // || elementType === "freedraw"
);
};
export const isBindingElement = (
element?: ExcalidrawElement | null,
includeLocked = true,
): element is ExcalidrawLinearElement => {
return (
element != null &&
(!element.locked || includeLocked === true) &&
isBindingElementType(element.type)
);
};
export const isBindingElementType = (
elementType: ElementOrToolType,
): boolean => {
return elementType === "arrow";
};
export const isBindableElement = (
element: ExcalidrawElement | null | undefined,
includeLocked = true,
): element is ExcalidrawBindableElement => {
return (
element != null &&
(!element.locked || includeLocked === true) &&
(element.type === "rectangle" ||
element.type === "diamond" ||
element.type === "ellipse" ||
element.type === "image" ||
element.type === "iframe" ||
element.type === "embeddable" ||
element.type === "frame" ||
element.type === "magicframe" ||
(element.type === "text" && !element.containerId))
);
};
export const isRectanguloidElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawBindableElement => {
return (
element != null &&
(element.type === "rectangle" ||
element.type === "diamond" ||
element.type === "image" ||
element.type === "iframe" ||
element.type === "embeddable" ||
element.type === "frame" ||
element.type === "magicframe" ||
(element.type === "text" && !element.containerId))
);
};
// TODO: Remove this when proper distance calculation is introduced
// @see binding.ts:distanceToBindableElement()
export const isRectangularElement = (
element?: ExcalidrawElement | null,
): element is ExcalidrawBindableElement => {
return (
element != null &&
(element.type === "rectangle" ||
element.type === "image" ||
element.type === "text" ||
element.type === "iframe" ||
element.type === "embeddable" ||
element.type === "frame" ||
element.type === "magicframe" ||
element.type === "freedraw")
);
};
export const isTextBindableContainer = (
element: ExcalidrawElement | null,
includeLocked = true,
): element is ExcalidrawTextContainer => {
return (
element != null &&
(!element.locked || includeLocked === true) &&
(element.type === "rectangle" ||
element.type === "diamond" ||
element.type === "ellipse" ||
isArrowElement(element))
);
};
export const isExcalidrawElement = (
element: any,
): element is ExcalidrawElement => {
const type: ExcalidrawElementType | undefined = element?.type;
if (!type) {
return false;
}
switch (type) {
case "text":
case "diamond":
case "rectangle":
case "iframe":
case "embeddable":
case "ellipse":
case "arrow":
case "freedraw":
case "line":
case "frame":
case "magicframe":
case "image":
case "selection": {
return true;
}
default: {
assertNever(type, null);
return false;
}
}
};
export const isFlowchartNodeElement = (
element: ExcalidrawElement,
): element is ExcalidrawFlowchartNodeElement => {
return (
element.type === "rectangle" ||
element.type === "ellipse" ||
element.type === "diamond"
);
};
export const hasBoundTextElement = (
element: ExcalidrawElement | null,
): element is MarkNonNullable<ExcalidrawBindableElement, "boundElements"> => {
return (
isTextBindableContainer(element) &&
!!element.boundElements?.some(({ type }) => type === "text")
);
};
export const isBoundToContainer = (
element: ExcalidrawElement | null,
): element is ExcalidrawTextElementWithContainer => {
return (
element !== null &&
"containerId" in element &&
element.containerId !== null &&
isTextElement(element)
);
};
export const isArrowBoundToElement = (element: ExcalidrawArrowElement) => {
return !!element.startBinding || !!element.endBinding;
};
export const isUsingAdaptiveRadius = (type: string) =>
type === "rectangle" ||
type === "embeddable" ||
type === "iframe" ||
type === "image";
export const isUsingProportionalRadius = (type: string) =>
type === "line" || type === "arrow" || type === "diamond";
export const canApplyRoundnessTypeToElement = (
roundnessType: RoundnessType,
element: ExcalidrawElement,
) => {
if (
(roundnessType === ROUNDNESS.ADAPTIVE_RADIUS ||
// if legacy roundness, it can be applied to elements that currently
// use adaptive radius
roundnessType === ROUNDNESS.LEGACY) &&
isUsingAdaptiveRadius(element.type)
) {
return true;
}
if (
roundnessType === ROUNDNESS.PROPORTIONAL_RADIUS &&
isUsingProportionalRadius(element.type)
) {
return true;
}
return false;
};
export const getDefaultRoundnessTypeForElement = (
element: ExcalidrawElement,
) => {
if (isUsingProportionalRadius(element.type)) {
return {
type: ROUNDNESS.PROPORTIONAL_RADIUS,
};
}
if (isUsingAdaptiveRadius(element.type)) {
return {
type: ROUNDNESS.ADAPTIVE_RADIUS,
};
}
return null;
};
export const isFixedPointBinding = (
binding: PointBinding | FixedPointBinding,
): binding is FixedPointBinding => {
return (
Object.hasOwn(binding, "fixedPoint") &&
(binding as FixedPointBinding).fixedPoint != null
);
};
// TODO: Move this to @excalidraw/math
export const isBounds = (box: unknown): box is Bounds =>
Array.isArray(box) &&
box.length === 4 &&
typeof box[0] === "number" &&
typeof box[1] === "number" &&
typeof box[2] === "number" &&
typeof box[3] === "number";
export const getLinearElementSubType = (
element: ExcalidrawLinearElement,
): ExcalidrawLinearElementSubType => {
if (isSharpArrow(element)) {
return "sharpArrow";
}
if (isCurvedArrow(element)) {
return "curvedArrow";
}
if (isElbowArrow(element)) {
return "elbowArrow";
}
return "line";
};
/**
* Checks if current element points meet all the conditions for polygon=true
* (this isn't a element type check, for that use isLineElement).
*
* If you want to check if points *can* be turned into a polygon, use
* canBecomePolygon(points).
*/
export const isValidPolygon = (
points: ExcalidrawLineElement["points"],
): boolean => {
return points.length > 3 && pointsEqual(points[0], points[points.length - 1]);
};
export const canBecomePolygon = (
points: ExcalidrawLineElement["points"],
): boolean => {
return (
points.length > 3 ||
// 3-point polygons can't have all points in a single line
(points.length === 3 && !pointsEqual(points[0], points[points.length - 1]))
);
};
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import type { LocalPoint, Radians } from "@excalidraw/math";
import type {
FONT_FAMILY,
ROUNDNESS,
TEXT_ALIGN,
THEME,
VERTICAL_ALIGN,
} from "@excalidraw/common";
import type {
MakeBrand,
MarkNonNullable,
Merge,
ValueOf,
} from "@excalidraw/common/utility-types";
export type ChartType = "bar" | "line";
export type FillStyle = "hachure" | "cross-hatch" | "solid" | "zigzag";
export type FontFamilyKeys = keyof typeof FONT_FAMILY;
export type FontFamilyValues = typeof FONT_FAMILY[FontFamilyKeys];
export type Theme = typeof THEME[keyof typeof THEME];
export type FontString = string & { _brand: "fontString" };
export type GroupId = string;
export type PointerType = "mouse" | "pen" | "touch";
export type StrokeRoundness = "round" | "sharp";
export type RoundnessType = ValueOf<typeof ROUNDNESS>;
export type StrokeStyle = "solid" | "dashed" | "dotted";
export type TextAlign = typeof TEXT_ALIGN[keyof typeof TEXT_ALIGN];
type VerticalAlignKeys = keyof typeof VERTICAL_ALIGN;
export type VerticalAlign = typeof VERTICAL_ALIGN[VerticalAlignKeys];
export type FractionalIndex = string & { _brand: "franctionalIndex" };
export type BoundElement = Readonly<{
id: ExcalidrawLinearElement["id"];
type: "arrow" | "text";
}>;
type _ExcalidrawElementBase = Readonly<{
id: string;
x: number;
y: number;
strokeColor: string;
backgroundColor: string;
fillStyle: FillStyle;
strokeWidth: number;
strokeStyle: StrokeStyle;
roundness: null | { type: RoundnessType; value?: number };
roughness: number;
opacity: number;
width: number;
height: number;
angle: Radians;
/** Random integer used to seed shape generation so that the roughjs shape
doesn't differ across renders. */
seed: number;
/** Integer that is sequentially incremented on each change. Used to reconcile
elements during collaboration or when saving to server. */
version: number;
/** Random integer that is regenerated on each change.
Used for deterministic reconciliation of updates during collaboration,
in case the versions (see above) are identical. */
versionNonce: number;
/** String in a fractional form defined by https://github.com/rocicorp/fractional-indexing.
Used for ordering in multiplayer scenarios, such as during reconciliation or undo / redo.
Always kept in sync with the array order by `syncMovedIndices` and `syncInvalidIndices`.
Could be null, i.e. for new elements which were not yet assigned to the scene. */
index: FractionalIndex | null;
isDeleted: boolean;
/** List of groups the element belongs to.
Ordered from deepest to shallowest. */
groupIds: readonly GroupId[];
frameId: string | null;
/** other elements that are bound to this element */
boundElements: readonly BoundElement[] | null;
/** epoch (ms) timestamp of last element update */
updated: number;
link: string | null;
locked: boolean;
customData?: Record<string, any>;
}>;
export type ExcalidrawSelectionElement = _ExcalidrawElementBase & {
type: "selection";
};
export type ExcalidrawRectangleElement = _ExcalidrawElementBase & {
type: "rectangle";
};
export type ExcalidrawDiamondElement = _ExcalidrawElementBase & {
type: "diamond";
};
export type ExcalidrawEllipseElement = _ExcalidrawElementBase & {
type: "ellipse";
};
export type ExcalidrawEmbeddableElement = _ExcalidrawElementBase &
Readonly<{
type: "embeddable";
}>;
export type MagicGenerationData =
| {
status: "pending";
}
| { status: "done"; html: string }
| {
status: "error";
message?: string;
code: "ERR_GENERATION_INTERRUPTED" | string;
};
export type ExcalidrawIframeElement = _ExcalidrawElementBase &
Readonly<{
type: "iframe";
// TODO move later to AI-specific frame
customData?: { generationData?: MagicGenerationData };
}>;
export type ExcalidrawIframeLikeElement =
| ExcalidrawIframeElement
| ExcalidrawEmbeddableElement;
export type IframeData =
| {
intrinsicSize: { w: number; h: number };
error?: Error;
sandbox?: { allowSameOrigin?: boolean };
} & (
| { type: "video" | "generic"; link: string }
| { type: "document"; srcdoc: (theme: Theme) => string }
);
export type ImageCrop = {
x: number;
y: number;
width: number;
height: number;
naturalWidth: number;
naturalHeight: number;
};
export type ExcalidrawImageElement = _ExcalidrawElementBase &
Readonly<{
type: "image";
fileId: FileId | null;
/** whether respective file is persisted */
status: "pending" | "saved" | "error";
/** X and Y scale factors <-1, 1>, used for image axis flipping */
scale: [number, number];
/** whether an element is cropped */
crop: ImageCrop | null;
}>;
export type InitializedExcalidrawImageElement = MarkNonNullable<
ExcalidrawImageElement,
"fileId"
>;
export type ExcalidrawFrameElement = _ExcalidrawElementBase & {
type: "frame";
name: string | null;
};
export type ExcalidrawMagicFrameElement = _ExcalidrawElementBase & {
type: "magicframe";
name: string | null;
};
export type ExcalidrawFrameLikeElement =
| ExcalidrawFrameElement
| ExcalidrawMagicFrameElement;
/**
* These are elements that don't have any additional properties.
*/
export type ExcalidrawGenericElement =
| ExcalidrawSelectionElement
| ExcalidrawRectangleElement
| ExcalidrawDiamondElement
| ExcalidrawEllipseElement;
export type ExcalidrawFlowchartNodeElement =
| ExcalidrawRectangleElement
| ExcalidrawDiamondElement
| ExcalidrawEllipseElement;
export type ExcalidrawRectanguloidElement =
| ExcalidrawRectangleElement
| ExcalidrawImageElement
| ExcalidrawTextElement
| ExcalidrawFreeDrawElement
| ExcalidrawIframeLikeElement
| ExcalidrawFrameLikeElement
| ExcalidrawEmbeddableElement
| ExcalidrawSelectionElement;
/**
* ExcalidrawElement should be JSON serializable and (eventually) contain
* no computed data. The list of all ExcalidrawElements should be shareable
* between peers and contain no state local to the peer.
*/
export type ExcalidrawElement =
| ExcalidrawGenericElement
| ExcalidrawTextElement
| ExcalidrawLinearElement
| ExcalidrawArrowElement
| ExcalidrawFreeDrawElement
| ExcalidrawImageElement
| ExcalidrawFrameElement
| ExcalidrawMagicFrameElement
| ExcalidrawIframeElement
| ExcalidrawEmbeddableElement;
export type ExcalidrawNonSelectionElement = Exclude<
ExcalidrawElement,
ExcalidrawSelectionElement
>;
export type Ordered<TElement extends ExcalidrawElement> = TElement & {
index: FractionalIndex;
};
export type OrderedExcalidrawElement = Ordered<ExcalidrawElement>;
export type NonDeleted<TElement extends ExcalidrawElement> = TElement & {
isDeleted: boolean;
};
export type NonDeletedExcalidrawElement = NonDeleted<ExcalidrawElement>;
export type ExcalidrawTextElement = _ExcalidrawElementBase &
Readonly<{
type: "text";
fontSize: number;
fontFamily: FontFamilyValues;
text: string;
textAlign: TextAlign;
verticalAlign: VerticalAlign;
containerId: ExcalidrawGenericElement["id"] | null;
originalText: string;
/**
* If `true` the width will fit the text. If `false`, the text will
* wrap to fit the width.
*
* @default true
*/
autoResize: boolean;
/**
* Unitless line height (aligned to W3C). To get line height in px, multiply
* with font size (using `getLineHeightInPx` helper).
*/
lineHeight: number & { _brand: "unitlessLineHeight" };
}>;
export type ExcalidrawBindableElement =
| ExcalidrawRectangleElement
| ExcalidrawDiamondElement
| ExcalidrawEllipseElement
| ExcalidrawTextElement
| ExcalidrawImageElement
| ExcalidrawIframeElement
| ExcalidrawEmbeddableElement
| ExcalidrawFrameElement
| ExcalidrawMagicFrameElement;
export type ExcalidrawTextContainer =
| ExcalidrawRectangleElement
| ExcalidrawDiamondElement
| ExcalidrawEllipseElement
| ExcalidrawArrowElement;
export type ExcalidrawTextElementWithContainer = {
containerId: ExcalidrawTextContainer["id"];
} & ExcalidrawTextElement;
export type FixedPoint = [number, number];
export type PointBinding = {
elementId: ExcalidrawBindableElement["id"];
focus: number;
gap: number;
};
export type FixedPointBinding = Merge<
PointBinding,
{
// Represents the fixed point binding information in form of a vertical and
// horizontal ratio (i.e. a percentage value in the 0.0-1.0 range). This ratio
// gives the user selected fixed point by multiplying the bound element width
// with fixedPoint[0] and the bound element height with fixedPoint[1] to get the
// bound element-local point coordinate.
fixedPoint: FixedPoint;
}
>;
type Index = number;
export type PointsPositionUpdates = Map<
Index,
{ point: LocalPoint; isDragging?: boolean }
>;
export type Arrowhead =
| "arrow"
| "bar"
| "dot" // legacy. Do not use for new elements.
| "circle"
| "circle_outline"
| "triangle"
| "triangle_outline"
| "diamond"
| "diamond_outline"
| "crowfoot_one"
| "crowfoot_many"
| "crowfoot_one_or_many";
export type ExcalidrawLinearElement = _ExcalidrawElementBase &
Readonly<{
type: "line" | "arrow";
points: readonly LocalPoint[];
lastCommittedPoint: LocalPoint | null;
startBinding: PointBinding | null;
endBinding: PointBinding | null;
startArrowhead: Arrowhead | null;
endArrowhead: Arrowhead | null;
}>;
export type ExcalidrawLineElement = ExcalidrawLinearElement &
Readonly<{
type: "line";
polygon: boolean;
}>;
export type FixedSegment = {
start: LocalPoint;
end: LocalPoint;
index: Index;
};
export type ExcalidrawArrowElement = ExcalidrawLinearElement &
Readonly<{
type: "arrow";
elbowed: boolean;
}>;
export type ExcalidrawElbowArrowElement = Merge<
ExcalidrawArrowElement,
{
elbowed: true;
startBinding: FixedPointBinding | null;
endBinding: FixedPointBinding | null;
fixedSegments: readonly FixedSegment[] | null;
/**
* Marks that the 3rd point should be used as the 2nd point of the arrow in
* order to temporarily hide the first segment of the arrow without losing
* the data from the points array. It allows creating the expected arrow
* path when the arrow with fixed segments is bound on a horizontal side and
* moved to a vertical and vica versa.
*/
startIsSpecial: boolean | null;
/**
* Marks that the 3rd point backwards from the end should be used as the 2nd
* point of the arrow in order to temporarily hide the last segment of the
* arrow without losing the data from the points array. It allows creating
* the expected arrow path when the arrow with fixed segments is bound on a
* horizontal side and moved to a vertical and vica versa.
*/
endIsSpecial: boolean | null;
}
>;
export type ExcalidrawFreeDrawElement = _ExcalidrawElementBase &
Readonly<{
type: "freedraw";
points: readonly LocalPoint[];
pressures: readonly number[];
simulatePressure: boolean;
lastCommittedPoint: LocalPoint | null;
}>;
export type FileId = string & { _brand: "FileId" };
export type ExcalidrawElementType = ExcalidrawElement["type"];
/**
* Map of excalidraw elements.
* Unspecified whether deleted or non-deleted.
* Can be a subset of Scene elements.
*/
export type ElementsMap = Map<ExcalidrawElement["id"], ExcalidrawElement>;
/**
* Map of non-deleted elements.
* Can be a subset of Scene elements.
*/
export type NonDeletedElementsMap = Map<
ExcalidrawElement["id"],
NonDeletedExcalidrawElement
> &
MakeBrand<"NonDeletedElementsMap">;
/**
* Map of all excalidraw Scene elements, including deleted.
* Not a subset. Use this type when you need access to current Scene elements.
*/
export type SceneElementsMap = Map<
ExcalidrawElement["id"],
Ordered<ExcalidrawElement>
> &
MakeBrand<"SceneElementsMap">;
/**
* Map of all non-deleted Scene elements.
* Not a subset. Use this type when you need access to current Scene elements.
*/
export type NonDeletedSceneElementsMap = Map<
ExcalidrawElement["id"],
Ordered<NonDeletedExcalidrawElement>
> &
MakeBrand<"NonDeletedSceneElementsMap">;
export type ElementsMapOrArray =
| readonly ExcalidrawElement[]
| Readonly<ElementsMap>;
export type ExcalidrawLinearElementSubType =
| "line"
| "sharpArrow"
| "curvedArrow"
| "elbowArrow";
export type ConvertibleGenericTypes = "rectangle" | "diamond" | "ellipse";
export type ConvertibleLinearTypes = ExcalidrawLinearElementSubType;
export type ConvertibleTypes = ConvertibleGenericTypes | ConvertibleLinearTypes;
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import {
DEFAULT_ADAPTIVE_RADIUS,
DEFAULT_PROPORTIONAL_RADIUS,
LINE_CONFIRM_THRESHOLD,
ROUNDNESS,
} from "@excalidraw/common";
import {
curve,
curveCatmullRomCubicApproxPoints,
curveOffsetPoints,
lineSegment,
pointDistance,
pointFrom,
pointFromArray,
rectangle,
type GlobalPoint,
} from "@excalidraw/math";
import type { Curve, LineSegment, LocalPoint } from "@excalidraw/math";
import type { NormalizedZoomValue, Zoom } from "@excalidraw/excalidraw/types";
import { getDiamondPoints } from "./bounds";
import { generateLinearCollisionShape } from "./shape";
import type {
ExcalidrawDiamondElement,
ExcalidrawElement,
ExcalidrawFreeDrawElement,
ExcalidrawLinearElement,
ExcalidrawRectanguloidElement,
} from "./types";
type ElementShape = [LineSegment<GlobalPoint>[], Curve<GlobalPoint>[]];
const ElementShapesCache = new WeakMap<
ExcalidrawElement,
{ version: ExcalidrawElement["version"]; shapes: Map<number, ElementShape> }
>();
const getElementShapesCacheEntry = <T extends ExcalidrawElement>(
element: T,
offset: number,
): ElementShape | undefined => {
const record = ElementShapesCache.get(element);
if (!record) {
return undefined;
}
const { version, shapes } = record;
if (version !== element.version) {
ElementShapesCache.delete(element);
return undefined;
}
return shapes.get(offset);
};
const setElementShapesCacheEntry = <T extends ExcalidrawElement>(
element: T,
shape: ElementShape,
offset: number,
) => {
const record = ElementShapesCache.get(element);
if (!record) {
ElementShapesCache.set(element, {
version: element.version,
shapes: new Map([[offset, shape]]),
});
return;
}
const { version, shapes } = record;
if (version !== element.version) {
ElementShapesCache.set(element, {
version: element.version,
shapes: new Map([[offset, shape]]),
});
return;
}
shapes.set(offset, shape);
};
/**
* Returns the **rotated** components of freedraw, line or arrow elements.
*
* @param element The linear element to deconstruct
* @returns The rotated in components.
*/
export function deconstructLinearOrFreeDrawElement(
element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
): [LineSegment<GlobalPoint>[], Curve<GlobalPoint>[]] {
const cachedShape = getElementShapesCacheEntry(element, 0);
if (cachedShape) {
return cachedShape;
}
const ops = generateLinearCollisionShape(element) as {
op: string;
data: number[];
}[];
const lines = [];
const curves = [];
for (let idx = 0; idx < ops.length; idx += 1) {
const op = ops[idx];
const prevPoint =
ops[idx - 1] && pointFromArray<LocalPoint>(ops[idx - 1].data.slice(-2));
switch (op.op) {
case "move":
continue;
case "lineTo":
if (!prevPoint) {
throw new Error("prevPoint is undefined");
}
lines.push(
lineSegment<GlobalPoint>(
pointFrom<GlobalPoint>(
element.x + prevPoint[0],
element.y + prevPoint[1],
),
pointFrom<GlobalPoint>(
element.x + op.data[0],
element.y + op.data[1],
),
),
);
continue;
case "bcurveTo":
if (!prevPoint) {
throw new Error("prevPoint is undefined");
}
curves.push(
curve<GlobalPoint>(
pointFrom<GlobalPoint>(
element.x + prevPoint[0],
element.y + prevPoint[1],
),
pointFrom<GlobalPoint>(
element.x + op.data[0],
element.y + op.data[1],
),
pointFrom<GlobalPoint>(
element.x + op.data[2],
element.y + op.data[3],
),
pointFrom<GlobalPoint>(
element.x + op.data[4],
element.y + op.data[5],
),
),
);
continue;
default: {
console.error("Unknown op type", op.op);
}
}
}
const shape = [lines, curves] as ElementShape;
setElementShapesCacheEntry(element, shape, 0);
return shape;
}
/**
* Get the building components of a rectanguloid element in the form of
* line segments and curves **unrotated**.
*
* @param element Target rectanguloid element
* @param offset Optional offset to expand the rectanguloid shape
* @returns Tuple of **unrotated** line segments (0) and curves (1)
*/
export function deconstructRectanguloidElement(
element: ExcalidrawRectanguloidElement,
offset: number = 0,
): [LineSegment<GlobalPoint>[], Curve<GlobalPoint>[]] {
const cachedShape = getElementShapesCacheEntry(element, offset);
if (cachedShape) {
return cachedShape;
}
let radius = getCornerRadius(
Math.min(element.width, element.height),
element,
);
if (radius === 0) {
radius = 0.01;
}
const r = rectangle(
pointFrom(element.x, element.y),
pointFrom(element.x + element.width, element.y + element.height),
);
const top = lineSegment<GlobalPoint>(
pointFrom<GlobalPoint>(r[0][0] + radius, r[0][1]),
pointFrom<GlobalPoint>(r[1][0] - radius, r[0][1]),
);
const right = lineSegment<GlobalPoint>(
pointFrom<GlobalPoint>(r[1][0], r[0][1] + radius),
pointFrom<GlobalPoint>(r[1][0], r[1][1] - radius),
);
const bottom = lineSegment<GlobalPoint>(
pointFrom<GlobalPoint>(r[0][0] + radius, r[1][1]),
pointFrom<GlobalPoint>(r[1][0] - radius, r[1][1]),
);
const left = lineSegment<GlobalPoint>(
pointFrom<GlobalPoint>(r[0][0], r[1][1] - radius),
pointFrom<GlobalPoint>(r[0][0], r[0][1] + radius),
);
const baseCorners = [
curve(
left[1],
pointFrom<GlobalPoint>(
left[1][0] + (2 / 3) * (r[0][0] - left[1][0]),
left[1][1] + (2 / 3) * (r[0][1] - left[1][1]),
),
pointFrom<GlobalPoint>(
top[0][0] + (2 / 3) * (r[0][0] - top[0][0]),
top[0][1] + (2 / 3) * (r[0][1] - top[0][1]),
),
top[0],
), // TOP LEFT
curve(
top[1],
pointFrom<GlobalPoint>(
top[1][0] + (2 / 3) * (r[1][0] - top[1][0]),
top[1][1] + (2 / 3) * (r[0][1] - top[1][1]),
),
pointFrom<GlobalPoint>(
right[0][0] + (2 / 3) * (r[1][0] - right[0][0]),
right[0][1] + (2 / 3) * (r[0][1] - right[0][1]),
),
right[0],
), // TOP RIGHT
curve(
right[1],
pointFrom<GlobalPoint>(
right[1][0] + (2 / 3) * (r[1][0] - right[1][0]),
right[1][1] + (2 / 3) * (r[1][1] - right[1][1]),
),
pointFrom<GlobalPoint>(
bottom[1][0] + (2 / 3) * (r[1][0] - bottom[1][0]),
bottom[1][1] + (2 / 3) * (r[1][1] - bottom[1][1]),
),
bottom[1],
), // BOTTOM RIGHT
curve(
bottom[0],
pointFrom<GlobalPoint>(
bottom[0][0] + (2 / 3) * (r[0][0] - bottom[0][0]),
bottom[0][1] + (2 / 3) * (r[1][1] - bottom[0][1]),
),
pointFrom<GlobalPoint>(
left[0][0] + (2 / 3) * (r[0][0] - left[0][0]),
left[0][1] + (2 / 3) * (r[1][1] - left[0][1]),
),
left[0],
), // BOTTOM LEFT
];
const corners =
offset > 0
? baseCorners.map(
(corner) =>
curveCatmullRomCubicApproxPoints(
curveOffsetPoints(corner, offset),
)!,
)
: [
[baseCorners[0]],
[baseCorners[1]],
[baseCorners[2]],
[baseCorners[3]],
];
const sides = [
lineSegment<GlobalPoint>(
corners[0][corners[0].length - 1][3],
corners[1][0][0],
),
lineSegment<GlobalPoint>(
corners[1][corners[1].length - 1][3],
corners[2][0][0],
),
lineSegment<GlobalPoint>(
corners[2][corners[2].length - 1][3],
corners[3][0][0],
),
lineSegment<GlobalPoint>(
corners[3][corners[3].length - 1][3],
corners[0][0][0],
),
];
const shape = [sides, corners.flat()] as ElementShape;
setElementShapesCacheEntry(element, shape, offset);
return shape;
}
/**
* Get the **unrotated** building components of a diamond element
* in the form of line segments and curves as a tuple, in this order.
*
* @param element The element to deconstruct
* @param offset An optional offset
* @returns Tuple of line **unrotated** segments (0) and curves (1)
*/
export function deconstructDiamondElement(
element: ExcalidrawDiamondElement,
offset: number = 0,
): [LineSegment<GlobalPoint>[], Curve<GlobalPoint>[]] {
const cachedShape = getElementShapesCacheEntry(element, offset);
if (cachedShape) {
return cachedShape;
}
const [topX, topY, rightX, rightY, bottomX, bottomY, leftX, leftY] =
getDiamondPoints(element);
const verticalRadius = element.roundness
? getCornerRadius(Math.abs(topX - leftX), element)
: (topX - leftX) * 0.01;
const horizontalRadius = element.roundness
? getCornerRadius(Math.abs(rightY - topY), element)
: (rightY - topY) * 0.01;
const [top, right, bottom, left]: GlobalPoint[] = [
pointFrom(element.x + topX, element.y + topY),
pointFrom(element.x + rightX, element.y + rightY),
pointFrom(element.x + bottomX, element.y + bottomY),
pointFrom(element.x + leftX, element.y + leftY),
];
const baseCorners = [
curve(
pointFrom<GlobalPoint>(
right[0] - verticalRadius,
right[1] - horizontalRadius,
),
right,
right,
pointFrom<GlobalPoint>(
right[0] - verticalRadius,
right[1] + horizontalRadius,
),
), // RIGHT
curve(
pointFrom<GlobalPoint>(
bottom[0] + verticalRadius,
bottom[1] - horizontalRadius,
),
bottom,
bottom,
pointFrom<GlobalPoint>(
bottom[0] - verticalRadius,
bottom[1] - horizontalRadius,
),
), // BOTTOM
curve(
pointFrom<GlobalPoint>(
left[0] + verticalRadius,
left[1] + horizontalRadius,
),
left,
left,
pointFrom<GlobalPoint>(
left[0] + verticalRadius,
left[1] - horizontalRadius,
),
), // LEFT
curve(
pointFrom<GlobalPoint>(
top[0] - verticalRadius,
top[1] + horizontalRadius,
),
top,
top,
pointFrom<GlobalPoint>(
top[0] + verticalRadius,
top[1] + horizontalRadius,
),
), // TOP
];
const corners =
offset > 0
? baseCorners.map(
(corner) =>
curveCatmullRomCubicApproxPoints(
curveOffsetPoints(corner, offset),
)!,
)
: [
[baseCorners[0]],
[baseCorners[1]],
[baseCorners[2]],
[baseCorners[3]],
];
const sides = [
lineSegment<GlobalPoint>(
corners[0][corners[0].length - 1][3],
corners[1][0][0],
),
lineSegment<GlobalPoint>(
corners[1][corners[1].length - 1][3],
corners[2][0][0],
),
lineSegment<GlobalPoint>(
corners[2][corners[2].length - 1][3],
corners[3][0][0],
),
lineSegment<GlobalPoint>(
corners[3][corners[3].length - 1][3],
corners[0][0][0],
),
];
const shape = [sides, corners.flat()] as ElementShape;
setElementShapesCacheEntry(element, shape, offset);
return shape;
}
// Checks if the first and last point are close enough
// to be considered a loop
export const isPathALoop = (
points: ExcalidrawLinearElement["points"],
/** supply if you want the loop detection to account for current zoom */
zoomValue: Zoom["value"] = 1 as NormalizedZoomValue,
): boolean => {
if (points.length >= 3) {
const [first, last] = [points[0], points[points.length - 1]];
const distance = pointDistance(first, last);
// Adjusting LINE_CONFIRM_THRESHOLD to current zoom so that when zoomed in
// really close we make the threshold smaller, and vice versa.
return distance <= LINE_CONFIRM_THRESHOLD / zoomValue;
}
return false;
};
export const getCornerRadius = (x: number, element: ExcalidrawElement) => {
if (
element.roundness?.type === ROUNDNESS.PROPORTIONAL_RADIUS ||
element.roundness?.type === ROUNDNESS.LEGACY
) {
return x * DEFAULT_PROPORTIONAL_RADIUS;
}
if (element.roundness?.type === ROUNDNESS.ADAPTIVE_RADIUS) {
const fixedRadiusSize = element.roundness?.value ?? DEFAULT_ADAPTIVE_RADIUS;
const CUTOFF_SIZE = fixedRadiusSize / DEFAULT_PROPORTIONAL_RADIUS;
if (x <= CUTOFF_SIZE) {
return x * DEFAULT_PROPORTIONAL_RADIUS;
}
return fixedRadiusSize;
}
return 0;
};
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import { arrayToMap, findIndex, findLastIndex } from "@excalidraw/common";
import type { AppState } from "@excalidraw/excalidraw/types";
import { isFrameLikeElement } from "./typeChecks";
import { getElementsInGroup } from "./groups";
import { syncMovedIndices } from "./fractionalIndex";
import { getSelectedElements } from "./selection";
import type { Scene } from "./Scene";
import type { ExcalidrawElement, ExcalidrawFrameLikeElement } from "./types";
const isOfTargetFrame = (element: ExcalidrawElement, frameId: string) => {
return element.frameId === frameId || element.id === frameId;
};
/**
* Returns indices of elements to move based on selected elements.
* Includes contiguous deleted elements that are between two selected elements,
* e.g.: [0 (selected), 1 (deleted), 2 (deleted), 3 (selected)]
*
* Specified elements (elementsToBeMoved) take precedence over
* appState.selectedElementsIds
*/
const getIndicesToMove = (
elements: readonly ExcalidrawElement[],
appState: AppState,
elementsToBeMoved?: readonly ExcalidrawElement[],
) => {
let selectedIndices: number[] = [];
let deletedIndices: number[] = [];
let includeDeletedIndex = null;
let index = -1;
const selectedElementIds = arrayToMap(
elementsToBeMoved
? elementsToBeMoved
: getSelectedElements(elements, appState, {
includeBoundTextElement: true,
includeElementsInFrames: true,
}),
);
while (++index < elements.length) {
const element = elements[index];
if (selectedElementIds.get(element.id)) {
if (deletedIndices.length) {
selectedIndices = selectedIndices.concat(deletedIndices);
deletedIndices = [];
}
selectedIndices.push(index);
includeDeletedIndex = index + 1;
} else if (element.isDeleted && includeDeletedIndex === index) {
includeDeletedIndex = index + 1;
deletedIndices.push(index);
} else {
deletedIndices = [];
}
}
return selectedIndices;
};
const toContiguousGroups = (array: number[]) => {
let cursor = 0;
return array.reduce((acc, value, index) => {
if (index > 0 && array[index - 1] !== value - 1) {
cursor = ++cursor;
}
(acc[cursor] || (acc[cursor] = [])).push(value);
return acc;
}, [] as number[][]);
};
/**
* @returns index of target element, consindering tightly-bound elements
* (currently non-linear elements bound to a container) as a one unit.
* If no binding present, returns `undefined`.
*/
const getTargetIndexAccountingForBinding = (
nextElement: ExcalidrawElement,
elements: readonly ExcalidrawElement[],
direction: "left" | "right",
scene: Scene,
) => {
if ("containerId" in nextElement && nextElement.containerId) {
// TODO: why not to get the container from the nextElements?
const containerElement = scene.getElement(nextElement.containerId);
if (containerElement) {
return direction === "left"
? Math.min(
elements.indexOf(containerElement),
elements.indexOf(nextElement),
)
: Math.max(
elements.indexOf(containerElement),
elements.indexOf(nextElement),
);
}
} else {
const boundElementId = nextElement.boundElements?.find(
(binding) => binding.type !== "arrow",
)?.id;
if (boundElementId) {
const boundTextElement = scene.getElement(boundElementId);
if (boundTextElement) {
return direction === "left"
? Math.min(
elements.indexOf(boundTextElement),
elements.indexOf(nextElement),
)
: Math.max(
elements.indexOf(boundTextElement),
elements.indexOf(nextElement),
);
}
}
}
};
const getContiguousFrameRangeElements = (
allElements: readonly ExcalidrawElement[],
frameId: ExcalidrawFrameLikeElement["id"],
) => {
let rangeStart = -1;
let rangeEnd = -1;
allElements.forEach((element, index) => {
if (isOfTargetFrame(element, frameId)) {
if (rangeStart === -1) {
rangeStart = index;
}
rangeEnd = index;
}
});
if (rangeStart === -1) {
return [];
}
return allElements.slice(rangeStart, rangeEnd + 1);
};
/**
* Returns next candidate index that's available to be moved to. Currently that
* is a non-deleted element, and not inside a group (unless we're editing it).
*/
const getTargetIndex = (
appState: AppState,
elements: readonly ExcalidrawElement[],
boundaryIndex: number,
direction: "left" | "right",
/**
* Frame id if moving frame children.
* If whole frame (including all children) is being moved, supply `null`.
*/
containingFrame: ExcalidrawFrameLikeElement["id"] | null,
scene: Scene,
) => {
const sourceElement = elements[boundaryIndex];
const indexFilter = (element: ExcalidrawElement) => {
if (element.isDeleted) {
return false;
}
if (containingFrame) {
return element.frameId === containingFrame;
}
// if we're editing group, find closest sibling irrespective of whether
// there's a different-group element between them (for legacy reasons)
if (appState.editingGroupId) {
return element.groupIds.includes(appState.editingGroupId);
}
return true;
};
const candidateIndex =
direction === "left"
? findLastIndex(
elements,
(el) => indexFilter(el),
Math.max(0, boundaryIndex - 1),
)
: findIndex(elements, (el) => indexFilter(el), boundaryIndex + 1);
const nextElement = elements[candidateIndex];
if (!nextElement) {
return -1;
}
if (appState.editingGroupId) {
if (
// candidate element is a sibling in current editing group → return
sourceElement?.groupIds.join("") === nextElement?.groupIds.join("")
) {
return (
getTargetIndexAccountingForBinding(
nextElement,
elements,
direction,
scene,
) ?? candidateIndex
);
} else if (!nextElement?.groupIds.includes(appState.editingGroupId)) {
// candidate element is outside current editing group → prevent
return -1;
}
}
if (
!containingFrame &&
(nextElement.frameId || isFrameLikeElement(nextElement))
) {
const frameElements = getContiguousFrameRangeElements(
elements,
nextElement.frameId || nextElement.id,
);
return direction === "left"
? elements.indexOf(frameElements[0])
: elements.indexOf(frameElements[frameElements.length - 1]);
}
if (!nextElement.groupIds.length) {
return (
getTargetIndexAccountingForBinding(
nextElement,
elements,
direction,
scene,
) ?? candidateIndex
);
}
const siblingGroupId = appState.editingGroupId
? nextElement.groupIds[
nextElement.groupIds.indexOf(appState.editingGroupId) - 1
]
: nextElement.groupIds[nextElement.groupIds.length - 1];
const elementsInSiblingGroup = getElementsInGroup(elements, siblingGroupId);
if (elementsInSiblingGroup.length) {
// assumes getElementsInGroup() returned elements are sorted
// by zIndex (ascending)
return direction === "left"
? elements.indexOf(elementsInSiblingGroup[0])
: elements.indexOf(
elementsInSiblingGroup[elementsInSiblingGroup.length - 1],
);
}
return candidateIndex;
};
const getTargetElementsMap = <T extends ExcalidrawElement>(
elements: readonly T[],
indices: number[],
) => {
return indices.reduce((acc, index) => {
const element = elements[index];
acc.set(element.id, element);
return acc;
}, new Map<string, ExcalidrawElement>());
};
const shiftElementsByOne = (
elements: readonly ExcalidrawElement[],
appState: AppState,
direction: "left" | "right",
scene: Scene,
) => {
const indicesToMove = getIndicesToMove(elements, appState);
const targetElementsMap = getTargetElementsMap(elements, indicesToMove);
let groupedIndices = toContiguousGroups(indicesToMove);
if (direction === "right") {
groupedIndices = groupedIndices.reverse();
}
const selectedFrames = new Set<ExcalidrawFrameLikeElement["id"]>(
indicesToMove
.filter((idx) => isFrameLikeElement(elements[idx]))
.map((idx) => elements[idx].id),
);
groupedIndices.forEach((indices, i) => {
const leadingIndex = indices[0];
const trailingIndex = indices[indices.length - 1];
const boundaryIndex = direction === "left" ? leadingIndex : trailingIndex;
const containingFrame = indices.some((idx) => {
const el = elements[idx];
return el.frameId && selectedFrames.has(el.frameId);
})
? null
: elements[boundaryIndex]?.frameId;
const targetIndex = getTargetIndex(
appState,
elements,
boundaryIndex,
direction,
containingFrame,
scene,
);
if (targetIndex === -1 || boundaryIndex === targetIndex) {
return;
}
const leadingElements =
direction === "left"
? elements.slice(0, targetIndex)
: elements.slice(0, leadingIndex);
const targetElements = elements.slice(leadingIndex, trailingIndex + 1);
const displacedElements =
direction === "left"
? elements.slice(targetIndex, leadingIndex)
: elements.slice(trailingIndex + 1, targetIndex + 1);
const trailingElements =
direction === "left"
? elements.slice(trailingIndex + 1)
: elements.slice(targetIndex + 1);
elements =
direction === "left"
? [
...leadingElements,
...targetElements,
...displacedElements,
...trailingElements,
]
: [
...leadingElements,
...displacedElements,
...targetElements,
...trailingElements,
];
});
syncMovedIndices(elements, targetElementsMap);
return elements;
};
const shiftElementsToEnd = (
elements: readonly ExcalidrawElement[],
appState: AppState,
direction: "left" | "right",
containingFrame: ExcalidrawFrameLikeElement["id"] | null,
elementsToBeMoved?: readonly ExcalidrawElement[],
) => {
const indicesToMove = getIndicesToMove(elements, appState, elementsToBeMoved);
const targetElementsMap = getTargetElementsMap(elements, indicesToMove);
const displacedElements: ExcalidrawElement[] = [];
let leadingIndex: number;
let trailingIndex: number;
if (direction === "left") {
if (containingFrame) {
leadingIndex = findIndex(elements, (el) =>
isOfTargetFrame(el, containingFrame),
);
} else if (appState.editingGroupId) {
const groupElements = getElementsInGroup(
elements,
appState.editingGroupId,
);
if (!groupElements.length) {
return elements;
}
leadingIndex = elements.indexOf(groupElements[0]);
} else {
leadingIndex = 0;
}
trailingIndex = indicesToMove[indicesToMove.length - 1];
} else {
if (containingFrame) {
trailingIndex = findLastIndex(elements, (el) =>
isOfTargetFrame(el, containingFrame),
);
} else if (appState.editingGroupId) {
const groupElements = getElementsInGroup(
elements,
appState.editingGroupId,
);
if (!groupElements.length) {
return elements;
}
trailingIndex = elements.indexOf(groupElements[groupElements.length - 1]);
} else {
trailingIndex = elements.length - 1;
}
leadingIndex = indicesToMove[0];
}
if (leadingIndex === -1) {
leadingIndex = 0;
}
for (let index = leadingIndex; index < trailingIndex + 1; index++) {
if (!indicesToMove.includes(index)) {
displacedElements.push(elements[index]);
}
}
const targetElements = Array.from(targetElementsMap.values());
const leadingElements = elements.slice(0, leadingIndex);
const trailingElements = elements.slice(trailingIndex + 1);
const nextElements =
direction === "left"
? [
...leadingElements,
...targetElements,
...displacedElements,
...trailingElements,
]
: [
...leadingElements,
...displacedElements,
...targetElements,
...trailingElements,
];
syncMovedIndices(nextElements, targetElementsMap);
return nextElements;
};
function shiftElementsAccountingForFrames(
allElements: readonly ExcalidrawElement[],
appState: AppState,
direction: "left" | "right",
shiftFunction: (
elements: readonly ExcalidrawElement[],
appState: AppState,
direction: "left" | "right",
containingFrame: ExcalidrawFrameLikeElement["id"] | null,
elementsToBeMoved?: readonly ExcalidrawElement[],
) => ExcalidrawElement[] | readonly ExcalidrawElement[],
) {
const elementsToMove = arrayToMap(
getSelectedElements(allElements, appState, {
includeBoundTextElement: true,
includeElementsInFrames: true,
}),
);
const frameAwareContiguousElementsToMove: {
regularElements: ExcalidrawElement[];
frameChildren: Map<ExcalidrawFrameLikeElement["id"], ExcalidrawElement[]>;
} = { regularElements: [], frameChildren: new Map() };
const fullySelectedFrames = new Set<ExcalidrawFrameLikeElement["id"]>();
for (const element of allElements) {
if (elementsToMove.has(element.id) && isFrameLikeElement(element)) {
fullySelectedFrames.add(element.id);
}
}
for (const element of allElements) {
if (elementsToMove.has(element.id)) {
if (
isFrameLikeElement(element) ||
(element.frameId && fullySelectedFrames.has(element.frameId))
) {
frameAwareContiguousElementsToMove.regularElements.push(element);
} else if (!element.frameId) {
frameAwareContiguousElementsToMove.regularElements.push(element);
} else {
const frameChildren =
frameAwareContiguousElementsToMove.frameChildren.get(
element.frameId,
) || [];
frameChildren.push(element);
frameAwareContiguousElementsToMove.frameChildren.set(
element.frameId,
frameChildren,
);
}
}
}
let nextElements = allElements;
const frameChildrenSets = Array.from(
frameAwareContiguousElementsToMove.frameChildren.entries(),
);
for (const [frameId, children] of frameChildrenSets) {
nextElements = shiftFunction(
allElements,
appState,
direction,
frameId,
children,
);
}
return shiftFunction(
nextElements,
appState,
direction,
null,
frameAwareContiguousElementsToMove.regularElements,
);
}
// public API
// -----------------------------------------------------------------------------
export const moveOneLeft = (
allElements: readonly ExcalidrawElement[],
appState: AppState,
scene: Scene,
) => {
return shiftElementsByOne(allElements, appState, "left", scene);
};
export const moveOneRight = (
allElements: readonly ExcalidrawElement[],
appState: AppState,
scene: Scene,
) => {
return shiftElementsByOne(allElements, appState, "right", scene);
};
export const moveAllLeft = (
allElements: readonly ExcalidrawElement[],
appState: AppState,
) => {
return shiftElementsAccountingForFrames(
allElements,
appState,
"left",
shiftElementsToEnd,
);
};
export const moveAllRight = (
allElements: readonly ExcalidrawElement[],
appState: AppState,
) => {
return shiftElementsAccountingForFrames(
allElements,
appState,
"right",
shiftElementsToEnd,
);
};
@@ -0,0 +1,57 @@
// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
exports[`Test Linear Elements > Test bound text element > should bind text to arrow when clicked on arrow and enter pressed 1`] = `
"Online whiteboard
collaboration made
easy"
`;
exports[`Test Linear Elements > Test bound text element > should bind text to arrow when double clicked 1`] = `
"Online whiteboard
collaboration made
easy"
`;
exports[`Test Linear Elements > Test bound text element > should match styles for text editor 1`] = `
<textarea
class="excalidraw-wysiwyg"
data-type="wysiwyg"
dir="auto"
style="position: absolute; display: inline-block; min-height: 1em; backface-visibility: hidden; margin: 0px; padding: 0px; border: 0px; outline: 0; resize: none; background: transparent; overflow: hidden; z-index: var(--zIndex-wysiwyg); word-break: break-word; white-space: pre-wrap; overflow-wrap: break-word; box-sizing: content-box; width: 10.5px; height: 26.25px; left: 35px; top: 7.5px; transform: translate(0px, 0px) scale(1) rotate(0deg); text-align: center; vertical-align: middle; color: rgb(30, 30, 30); opacity: 1; filter: var(--theme-filter); max-height: 992.5px; font: Emoji 20px 20px; line-height: 1.25; font-family: Excalifont, Xiaolai, sans-serif, Segoe UI Emoji;"
tabindex="0"
wrap="off"
/>
`;
exports[`Test Linear Elements > Test bound text element > should resize and position the bound text and bounding box correctly when 3 pointer arrow element resized 2`] = `
"Online whiteboard
collaboration made
easy"
`;
exports[`Test Linear Elements > Test bound text element > should resize and position the bound text and bounding box correctly when 3 pointer arrow element resized 6`] = `
"Online whiteboard
collaboration made easy"
`;
exports[`Test Linear Elements > Test bound text element > should resize and position the bound text correctly when 2 pointer linear element resized 2`] = `
"Online whiteboard
collaboration made
easy"
`;
exports[`Test Linear Elements > Test bound text element > should resize and position the bound text correctly when 2 pointer linear element resized 5`] = `
"Online whiteboard
collaboration made easy"
`;
exports[`Test Linear Elements > Test bound text element > should wrap the bound text when arrow bound container moves 1`] = `
"Online whiteboard
collaboration made easy"
`;
exports[`Test Linear Elements > Test bound text element > should wrap the bound text when arrow bound container moves 2`] = `
"Online whiteboard
collaboration made
easy"
`;
File diff suppressed because it is too large Load Diff
+478
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@@ -0,0 +1,478 @@
import { KEYS, arrayToMap } from "@excalidraw/common";
import { pointFrom } from "@excalidraw/math";
import { actionWrapTextInContainer } from "@excalidraw/excalidraw/actions/actionBoundText";
import { Excalidraw, isLinearElement } from "@excalidraw/excalidraw";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { UI, Pointer, Keyboard } from "@excalidraw/excalidraw/tests/helpers/ui";
import { fireEvent, render } from "@excalidraw/excalidraw/tests/test-utils";
import { getTransformHandles } from "../src/transformHandles";
import {
getTextEditor,
TEXT_EDITOR_SELECTOR,
} from "../../excalidraw/tests/queries/dom";
const { h } = window;
const mouse = new Pointer("mouse");
describe("element binding", () => {
beforeEach(async () => {
await render(<Excalidraw handleKeyboardGlobally={true} />);
});
it("should create valid binding if duplicate start/end points", async () => {
const rect = API.createElement({
type: "rectangle",
x: 0,
y: 0,
width: 50,
height: 50,
});
const arrow = API.createElement({
type: "arrow",
x: 100,
y: 0,
width: 100,
height: 1,
points: [
pointFrom(0, 0),
pointFrom(0, 0),
pointFrom(100, 0),
pointFrom(100, 0),
],
});
API.setElements([rect, arrow]);
expect(arrow.startBinding).toBe(null);
// select arrow
mouse.clickAt(150, 0);
// move arrow start to potential binding position
mouse.downAt(100, 0);
mouse.moveTo(55, 0);
mouse.up(0, 0);
// Point selection is evaluated like the points are rendered,
// from right to left. So clicking on the first point should move the joint,
// not the start point.
expect(arrow.startBinding).toBe(null);
// Now that the start point is free, move it into overlapping position
mouse.downAt(100, 0);
mouse.moveTo(55, 0);
mouse.up(0, 0);
expect(API.getSelectedElements()).toEqual([arrow]);
expect(arrow.startBinding).toEqual({
elementId: rect.id,
focus: expect.toBeNonNaNNumber(),
gap: expect.toBeNonNaNNumber(),
});
// Move the end point to the overlapping binding position
mouse.downAt(200, 0);
mouse.moveTo(55, 0);
mouse.up(0, 0);
// Both the start and the end points should be bound
expect(arrow.startBinding).toEqual({
elementId: rect.id,
focus: expect.toBeNonNaNNumber(),
gap: expect.toBeNonNaNNumber(),
});
expect(arrow.endBinding).toEqual({
elementId: rect.id,
focus: expect.toBeNonNaNNumber(),
gap: expect.toBeNonNaNNumber(),
});
});
//@TODO fix the test with rotation
it.skip("rotation of arrow should rebind both ends", () => {
const rectLeft = UI.createElement("rectangle", {
x: 0,
width: 200,
height: 500,
});
const rectRight = UI.createElement("rectangle", {
x: 400,
width: 200,
height: 500,
});
const arrow = UI.createElement("arrow", {
x: 210,
y: 250,
width: 180,
height: 1,
});
expect(arrow.startBinding?.elementId).toBe(rectLeft.id);
expect(arrow.endBinding?.elementId).toBe(rectRight.id);
const rotation = getTransformHandles(
arrow,
h.state.zoom,
arrayToMap(h.elements),
"mouse",
).rotation!;
const rotationHandleX = rotation[0] + rotation[2] / 2;
const rotationHandleY = rotation[1] + rotation[3] / 2;
mouse.down(rotationHandleX, rotationHandleY);
mouse.move(300, 400);
mouse.up();
expect(arrow.angle).toBeGreaterThan(0.7 * Math.PI);
expect(arrow.angle).toBeLessThan(1.3 * Math.PI);
expect(arrow.startBinding?.elementId).toBe(rectRight.id);
expect(arrow.endBinding?.elementId).toBe(rectLeft.id);
});
// TODO fix & reenable once we rewrite tests to work with concurrency
it.skip(
"editing arrow and moving its head to bind it to element A, finalizing the" +
"editing by clicking on element A should end up selecting A",
async () => {
UI.createElement("rectangle", {
y: 0,
size: 100,
});
// Create arrow bound to rectangle
UI.clickTool("arrow");
mouse.down(50, -100);
mouse.up(0, 80);
// Edit arrow with multi-point
mouse.doubleClick();
// move arrow head
mouse.down();
mouse.up(0, 10);
expect(API.getSelectedElement().type).toBe("arrow");
// NOTE this mouse down/up + await needs to be done in order to repro
// the issue, due to https://github.com/excalidraw/excalidraw/blob/46bff3daceb602accf60c40a84610797260fca94/src/components/App.tsx#L740
mouse.reset();
expect(h.state.selectedLinearElement?.isEditing).toBe(true);
mouse.down(0, 0);
await new Promise((r) => setTimeout(r, 100));
expect(h.state.selectedLinearElement?.isEditing).toBe(false);
expect(API.getSelectedElement().type).toBe("rectangle");
mouse.up();
expect(API.getSelectedElement().type).toBe("rectangle");
},
);
it("should unbind arrow when moving it with keyboard", () => {
const rectangle = UI.createElement("rectangle", {
x: 75,
y: 0,
size: 100,
});
// Creates arrow 1px away from bidding with rectangle
const arrow = UI.createElement("arrow", {
x: 0,
y: 0,
size: 49,
});
expect(arrow.endBinding).toBe(null);
mouse.downAt(49, 49);
mouse.moveTo(51, 0);
mouse.up(0, 0);
// Test sticky connection
expect(API.getSelectedElement().type).toBe("arrow");
Keyboard.keyPress(KEYS.ARROW_RIGHT);
expect(arrow.endBinding?.elementId).toBe(rectangle.id);
Keyboard.keyPress(KEYS.ARROW_LEFT);
expect(arrow.endBinding?.elementId).toBe(rectangle.id);
// Sever connection
expect(API.getSelectedElement().type).toBe("arrow");
Keyboard.keyPress(KEYS.ARROW_LEFT);
expect(arrow.endBinding).toBe(null);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
expect(arrow.endBinding).toBe(null);
});
it("should unbind on bound element deletion", () => {
const rectangle = UI.createElement("rectangle", {
x: 60,
y: 0,
size: 100,
});
const arrow = UI.createElement("arrow", {
x: 0,
y: 0,
size: 50,
});
expect(arrow.endBinding?.elementId).toBe(rectangle.id);
mouse.select(rectangle);
expect(API.getSelectedElement().type).toBe("rectangle");
Keyboard.keyDown(KEYS.DELETE);
expect(arrow.endBinding).toBe(null);
});
it("should unbind on text element deletion by submitting empty text", async () => {
const text = API.createElement({
type: "text",
text: "ola",
x: 60,
y: 0,
width: 100,
height: 100,
});
API.setElements([text]);
const arrow = UI.createElement("arrow", {
x: 0,
y: 0,
size: 50,
});
expect(arrow.endBinding?.elementId).toBe(text.id);
// edit text element and submit
// -------------------------------------------------------------------------
UI.clickTool("text");
mouse.clickAt(text.x + 50, text.y + 50);
const editor = await getTextEditor();
fireEvent.change(editor, { target: { value: "" } });
fireEvent.keyDown(editor, { key: KEYS.ESCAPE });
expect(document.querySelector(TEXT_EDITOR_SELECTOR)).toBe(null);
expect(arrow.endBinding).toBe(null);
});
it("should keep binding on text update", async () => {
const text = API.createElement({
type: "text",
text: "ola",
x: 60,
y: 0,
width: 100,
height: 100,
});
API.setElements([text]);
const arrow = UI.createElement("arrow", {
x: 0,
y: 0,
size: 50,
});
expect(arrow.endBinding?.elementId).toBe(text.id);
// delete text element by submitting empty text
// -------------------------------------------------------------------------
UI.clickTool("text");
mouse.clickAt(text.x + 50, text.y + 50);
const editor = await getTextEditor();
expect(editor).not.toBe(null);
fireEvent.change(editor, { target: { value: "asdasdasdasdas" } });
fireEvent.keyDown(editor, { key: KEYS.ESCAPE });
expect(document.querySelector(TEXT_EDITOR_SELECTOR)).toBe(null);
expect(arrow.endBinding?.elementId).toBe(text.id);
});
it("should update binding when text containerized", async () => {
const rectangle1 = API.createElement({
type: "rectangle",
id: "rectangle1",
width: 100,
height: 100,
boundElements: [
{ id: "arrow1", type: "arrow" },
{ id: "arrow2", type: "arrow" },
],
});
const arrow1 = API.createElement({
type: "arrow",
id: "arrow1",
points: [pointFrom(0, 0), pointFrom(0, -87.45777932247563)],
startBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
endBinding: {
elementId: "text1",
focus: 0.2,
gap: 7,
fixedPoint: [1, 0.5],
},
});
const arrow2 = API.createElement({
type: "arrow",
id: "arrow2",
points: [pointFrom(0, 0), pointFrom(0, -87.45777932247563)],
startBinding: {
elementId: "text1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
endBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [1, 0.5],
},
});
const text1 = API.createElement({
type: "text",
id: "text1",
text: "ola",
boundElements: [
{ id: "arrow1", type: "arrow" },
{ id: "arrow2", type: "arrow" },
],
});
API.setElements([rectangle1, arrow1, arrow2, text1]);
API.setSelectedElements([text1]);
expect(h.state.selectedElementIds[text1.id]).toBe(true);
API.executeAction(actionWrapTextInContainer);
// new text container will be placed before the text element
const container = h.elements.at(-2)!;
expect(container.type).toBe("rectangle");
expect(container.id).not.toBe(rectangle1.id);
expect(container).toEqual(
expect.objectContaining({
boundElements: expect.arrayContaining([
{
type: "text",
id: text1.id,
},
{
type: "arrow",
id: arrow1.id,
},
{
type: "arrow",
id: arrow2.id,
},
]),
}),
);
expect(arrow1.startBinding?.elementId).toBe(rectangle1.id);
expect(arrow1.endBinding?.elementId).toBe(container.id);
expect(arrow2.startBinding?.elementId).toBe(container.id);
expect(arrow2.endBinding?.elementId).toBe(rectangle1.id);
});
// #6459
it("should unbind arrow only from the latest element", () => {
const rectLeft = UI.createElement("rectangle", {
x: 0,
width: 200,
height: 500,
});
const rectRight = UI.createElement("rectangle", {
x: 400,
width: 200,
height: 500,
});
const arrow = UI.createElement("arrow", {
x: 210,
y: 250,
width: 180,
height: 1,
});
expect(arrow.startBinding?.elementId).toBe(rectLeft.id);
expect(arrow.endBinding?.elementId).toBe(rectRight.id);
// Drag arrow off of bound rectangle range
const handles = getTransformHandles(
arrow,
h.state.zoom,
arrayToMap(h.elements),
"mouse",
).se!;
Keyboard.keyDown(KEYS.CTRL_OR_CMD);
const elX = handles[0] + handles[2] / 2;
const elY = handles[1] + handles[3] / 2;
mouse.downAt(elX, elY);
mouse.moveTo(300, 400);
mouse.up();
expect(arrow.startBinding).not.toBe(null);
expect(arrow.endBinding).toBe(null);
});
it("should not unbind when duplicating via selection group", () => {
const rectLeft = UI.createElement("rectangle", {
x: 0,
width: 200,
height: 500,
});
const rectRight = UI.createElement("rectangle", {
x: 400,
y: 200,
width: 200,
height: 500,
});
const arrow = UI.createElement("arrow", {
x: 210,
y: 250,
width: 177,
height: 1,
});
expect(arrow.startBinding?.elementId).toBe(rectLeft.id);
expect(arrow.endBinding?.elementId).toBe(rectRight.id);
mouse.downAt(-100, -100);
mouse.moveTo(650, 750);
mouse.up(0, 0);
expect(API.getSelectedElements().length).toBe(3);
mouse.moveTo(5, 5);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.downAt(5, 5);
mouse.moveTo(1000, 1000);
mouse.up(0, 0);
expect(window.h.elements.length).toBe(6);
window.h.elements.forEach((element) => {
if (isLinearElement(element)) {
expect(element.startBinding).not.toBe(null);
expect(element.endBinding).not.toBe(null);
} else {
expect(element.boundElements).not.toBe(null);
}
});
});
});
});
+143
View File
@@ -0,0 +1,143 @@
import { pointFrom } from "@excalidraw/math";
import { arrayToMap, ROUNDNESS } from "@excalidraw/common";
import type { LocalPoint } from "@excalidraw/math";
import { getElementAbsoluteCoords, getElementBounds } from "../src/bounds";
import type { ExcalidrawElement, ExcalidrawLinearElement } from "../src/types";
const _ce = ({
x,
y,
w,
h,
a,
t,
}: {
x: number;
y: number;
w: number;
h: number;
a?: number;
t?: string;
}) =>
({
type: t || "rectangle",
strokeColor: "#000",
backgroundColor: "#000",
fillStyle: "solid",
strokeWidth: 1,
roundness: { type: ROUNDNESS.PROPORTIONAL_RADIUS },
roughness: 0,
opacity: 1,
x,
y,
width: w,
height: h,
angle: a,
} as ExcalidrawElement);
describe("getElementAbsoluteCoords", () => {
it("test x1 coordinate", () => {
const element = _ce({ x: 10, y: 20, w: 10, h: 0 });
const [x1] = getElementAbsoluteCoords(element, arrayToMap([element]));
expect(x1).toEqual(10);
});
it("test x2 coordinate", () => {
const element = _ce({ x: 10, y: 20, w: 10, h: 0 });
const [, , x2] = getElementAbsoluteCoords(element, arrayToMap([element]));
expect(x2).toEqual(20);
});
it("test y1 coordinate", () => {
const element = _ce({ x: 0, y: 10, w: 0, h: 10 });
const [, y1] = getElementAbsoluteCoords(element, arrayToMap([element]));
expect(y1).toEqual(10);
});
it("test y2 coordinate", () => {
const element = _ce({ x: 0, y: 10, w: 0, h: 10 });
const [, , , y2] = getElementAbsoluteCoords(element, arrayToMap([element]));
expect(y2).toEqual(20);
});
});
describe("getElementBounds", () => {
it("rectangle", () => {
const element = _ce({
x: 40,
y: 30,
w: 20,
h: 10,
a: Math.PI / 4,
t: "rectangle",
});
const [x1, y1, x2, y2] = getElementBounds(element, arrayToMap([element]));
expect(x1).toEqual(39.39339828220179);
expect(y1).toEqual(24.393398282201787);
expect(x2).toEqual(60.60660171779821);
expect(y2).toEqual(45.60660171779821);
});
it("diamond", () => {
const element = _ce({
x: 40,
y: 30,
w: 20,
h: 10,
a: Math.PI / 4,
t: "diamond",
});
const [x1, y1, x2, y2] = getElementBounds(element, arrayToMap([element]));
expect(x1).toEqual(42.928932188134524);
expect(y1).toEqual(27.928932188134524);
expect(x2).toEqual(57.071067811865476);
expect(y2).toEqual(42.071067811865476);
});
it("ellipse", () => {
const element = _ce({
x: 40,
y: 30,
w: 20,
h: 10,
a: Math.PI / 4,
t: "ellipse",
});
const [x1, y1, x2, y2] = getElementBounds(element, arrayToMap([element]));
expect(x1).toEqual(42.09430584957905);
expect(y1).toEqual(27.09430584957905);
expect(x2).toEqual(57.90569415042095);
expect(y2).toEqual(42.90569415042095);
});
it("curved line", () => {
const element = {
..._ce({
t: "line",
x: 449.58203125,
y: 186.0625,
w: 170.12890625,
h: 92.48828125,
a: 0.6447741904932416,
}),
points: [
pointFrom<LocalPoint>(0, 0),
pointFrom<LocalPoint>(67.33984375, 92.48828125),
pointFrom<LocalPoint>(-102.7890625, 52.15625),
],
} as ExcalidrawLinearElement;
const [x1, y1, x2, y2] = getElementBounds(element, arrayToMap([element]));
expect(x1).toEqual(360.3176068760539);
expect(y1).toEqual(185.90654264413516);
expect(x2).toEqual(480.87005902729743);
expect(y2).toEqual(320.4751269334226);
});
});
+38
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@@ -0,0 +1,38 @@
import { type GlobalPoint, type LocalPoint, pointFrom } from "@excalidraw/math";
import { Excalidraw } from "@excalidraw/excalidraw";
import { UI } from "@excalidraw/excalidraw/tests/helpers/ui";
import "@excalidraw/utils/test-utils";
import { render } from "@excalidraw/excalidraw/tests/test-utils";
import { hitElementItself } from "../src/collision";
describe("check rotated elements can be hit:", () => {
beforeEach(async () => {
localStorage.clear();
await render(<Excalidraw handleKeyboardGlobally={true} />);
});
it("arrow", () => {
UI.createElement("arrow", {
x: 0,
y: 0,
width: 124,
height: 302,
angle: 1.8700426423973724,
points: [
[0, 0],
[120, -198],
[-4, -302],
] as LocalPoint[],
});
//const p = [120, -211];
//const p = [0, 13];
const hit = hitElementItself({
point: pointFrom<GlobalPoint>(88, -68),
element: window.h.elements[0],
threshold: 10,
elementsMap: window.h.scene.getNonDeletedElementsMap(),
});
expect(hit).toBe(true);
});
});
+359
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import React from "react";
import { vi } from "vitest";
import { KEYS, cloneJSON } from "@excalidraw/common";
import {
Excalidraw,
exportToCanvas,
exportToSvg,
} from "@excalidraw/excalidraw";
import {
actionFlipHorizontal,
actionFlipVertical,
} from "@excalidraw/excalidraw/actions";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { Keyboard, Pointer, UI } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
act,
GlobalTestState,
render,
unmountComponent,
} from "@excalidraw/excalidraw/tests/test-utils";
import type { NormalizedZoomValue } from "@excalidraw/excalidraw/types";
import { duplicateElement } from "../src/duplicate";
import type { ExcalidrawImageElement, ImageCrop } from "../src/types";
const { h } = window;
const mouse = new Pointer("mouse");
beforeEach(async () => {
unmountComponent();
mouse.reset();
localStorage.clear();
sessionStorage.clear();
vi.clearAllMocks();
Object.assign(document, {
elementFromPoint: () => GlobalTestState.canvas,
});
await render(<Excalidraw autoFocus={true} handleKeyboardGlobally={true} />);
API.setAppState({
zoom: {
value: 1 as NormalizedZoomValue,
},
});
const image = API.createElement({ type: "image", width: 200, height: 100 });
API.setElements([image]);
API.setAppState({
selectedElementIds: {
[image.id]: true,
},
});
});
const generateRandomNaturalWidthAndHeight = (image: ExcalidrawImageElement) => {
const initialWidth = image.width;
const initialHeight = image.height;
const scale = 1 + Math.random() * 5;
return {
naturalWidth: initialWidth * scale,
naturalHeight: initialHeight * scale,
};
};
const compareCrops = (cropA: ImageCrop, cropB: ImageCrop) => {
(Object.keys(cropA) as [keyof ImageCrop]).forEach((key) => {
const propA = cropA[key];
const propB = cropB[key];
expect(propA as number).toBeCloseTo(propB as number);
});
};
describe("Enter and leave the crop editor", () => {
it("enter the editor by double clicking", () => {
const image = h.elements[0];
expect(h.state.croppingElementId).toBe(null);
mouse.doubleClickOn(image);
expect(h.state.croppingElementId).not.toBe(null);
expect(h.state.croppingElementId).toBe(image.id);
});
it("enter the editor by pressing enter", () => {
const image = h.elements[0];
expect(h.state.croppingElementId).toBe(null);
Keyboard.keyDown(KEYS.ENTER);
expect(h.state.croppingElementId).not.toBe(null);
expect(h.state.croppingElementId).toBe(image.id);
});
it("leave the editor by clicking outside", () => {
const image = h.elements[0];
Keyboard.keyDown(KEYS.ENTER);
expect(h.state.croppingElementId).not.toBe(null);
mouse.click(image.x - 20, image.y - 20);
expect(h.state.croppingElementId).toBe(null);
});
it("leave the editor by pressing escape", () => {
const image = h.elements[0];
mouse.doubleClickOn(image);
expect(h.state.croppingElementId).not.toBe(null);
Keyboard.keyDown(KEYS.ESCAPE);
expect(h.state.croppingElementId).toBe(null);
});
});
describe("Crop an image", () => {
it("Cropping changes the dimension", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
UI.crop(image, "w", naturalWidth, naturalHeight, [initialWidth / 2, 0]);
expect(image.width).toBeLessThan(initialWidth);
UI.crop(image, "n", naturalWidth, naturalHeight, [0, initialHeight / 2]);
expect(image.height).toBeLessThan(initialHeight);
});
it("Cropping has minimal sizes", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
UI.crop(image, "w", naturalWidth, naturalHeight, [initialWidth, 0]);
expect(image.width).toBeLessThan(initialWidth);
expect(image.width).toBeGreaterThan(0);
UI.crop(image, "w", naturalWidth, naturalHeight, [-initialWidth, 0]);
UI.crop(image, "n", naturalWidth, naturalHeight, [0, initialHeight]);
expect(image.height).toBeLessThan(initialHeight);
expect(image.height).toBeGreaterThan(0);
});
it("Preserve aspect ratio", async () => {
let image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
UI.crop(image, "w", naturalWidth, naturalHeight, [initialWidth / 3, 0]);
let resizedWidth = image.width;
let resizedHeight = image.height;
// max height, cropping should not change anything
UI.crop(
image,
"w",
naturalWidth,
naturalHeight,
[-initialWidth / 3, 0],
true,
);
expect(image.width).toBeCloseTo(resizedWidth, 10);
expect(image.height).toBeCloseTo(resizedHeight, 10);
// re-crop to initial state
UI.crop(image, "w", naturalWidth, naturalHeight, [-initialWidth / 3, 0]);
// change crop height and width
UI.crop(image, "s", naturalWidth, naturalHeight, [0, -initialHeight / 2]);
UI.crop(image, "e", naturalWidth, naturalHeight, [-initialWidth / 3, 0]);
resizedWidth = image.width;
resizedHeight = image.height;
// test corner handle aspect ratio preserving
UI.crop(image, "se", naturalWidth, naturalHeight, [initialWidth, 0], true);
expect(image.width / image.height).toBe(resizedWidth / resizedHeight);
expect(image.width).toBeLessThanOrEqual(initialWidth + 0.0001);
expect(image.height).toBeLessThanOrEqual(initialHeight + 0.0001);
// reset
image = API.createElement({ type: "image", width: 200, height: 100 });
API.setElements([image]);
API.setAppState({
selectedElementIds: {
[image.id]: true,
},
});
// 50 x 50 square
UI.crop(image, "nw", naturalWidth, naturalHeight, [150, 50]);
UI.crop(image, "n", naturalWidth, naturalHeight, [0, -100], true);
expect(image.width).toBeCloseTo(image.height);
// image is at the corner, not space to its right to expand, should not be able to resize
expect(image.height).toBeCloseTo(50);
UI.crop(image, "nw", naturalWidth, naturalHeight, [-150, -100], true);
expect(image.width).toBeCloseTo(image.height);
// max height should be reached
expect(image.height).toBeCloseTo(initialHeight);
expect(image.width).toBeCloseTo(initialHeight);
});
});
describe("Cropping and other features", async () => {
it("Cropping works independently of duplication", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
UI.crop(image, "nw", naturalWidth, naturalHeight, [
initialWidth / 2,
initialHeight / 2,
]);
Keyboard.keyDown(KEYS.ESCAPE);
const duplicatedImage = duplicateElement(null, new Map(), image);
act(() => {
h.app.scene.insertElement(duplicatedImage);
});
expect(duplicatedImage.width).toBe(image.width);
expect(duplicatedImage.height).toBe(image.height);
UI.crop(duplicatedImage, "nw", naturalWidth, naturalHeight, [
-initialWidth / 2,
-initialHeight / 2,
]);
expect(duplicatedImage.width).toBe(initialWidth);
expect(duplicatedImage.height).toBe(initialHeight);
const resizedWidth = image.width;
const resizedHeight = image.height;
expect(image.width).not.toBe(duplicatedImage.width);
expect(image.height).not.toBe(duplicatedImage.height);
UI.crop(duplicatedImage, "se", naturalWidth, naturalHeight, [
-initialWidth / 1.5,
-initialHeight / 1.5,
]);
expect(duplicatedImage.width).not.toBe(initialWidth);
expect(image.width).toBe(resizedWidth);
expect(duplicatedImage.height).not.toBe(initialHeight);
expect(image.height).toBe(resizedHeight);
});
it("Resizing should not affect crop", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
UI.crop(image, "nw", naturalWidth, naturalHeight, [
initialWidth / 2,
initialHeight / 2,
]);
const cropBeforeResizing = image.crop;
const cropBeforeResizingCloned = cloneJSON(image.crop) as ImageCrop;
expect(cropBeforeResizing).not.toBe(null);
UI.crop(image, "e", naturalWidth, naturalHeight, [200, 0]);
expect(cropBeforeResizing).toBe(image.crop);
compareCrops(cropBeforeResizingCloned, image.crop!);
UI.resize(image, "s", [0, -100]);
expect(cropBeforeResizing).toBe(image.crop);
compareCrops(cropBeforeResizingCloned, image.crop!);
UI.resize(image, "ne", [-50, -50]);
expect(cropBeforeResizing).toBe(image.crop);
compareCrops(cropBeforeResizingCloned, image.crop!);
});
it("Flipping does not change crop", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
mouse.doubleClickOn(image);
expect(h.state.croppingElementId).not.toBe(null);
UI.crop(image, "nw", naturalWidth, naturalHeight, [
initialWidth / 2,
initialHeight / 2,
]);
Keyboard.keyDown(KEYS.ESCAPE);
const cropBeforeResizing = image.crop;
const cropBeforeResizingCloned = cloneJSON(image.crop) as ImageCrop;
API.executeAction(actionFlipHorizontal);
expect(image.crop).toBe(cropBeforeResizing);
compareCrops(cropBeforeResizingCloned, image.crop!);
API.executeAction(actionFlipVertical);
expect(image.crop).toBe(cropBeforeResizing);
compareCrops(cropBeforeResizingCloned, image.crop!);
});
it("Exports should preserve crops", async () => {
const image = h.elements[0] as ExcalidrawImageElement;
const initialWidth = image.width;
const initialHeight = image.height;
const { naturalWidth, naturalHeight } =
generateRandomNaturalWidthAndHeight(image);
mouse.doubleClickOn(image);
expect(h.state.croppingElementId).not.toBe(null);
UI.crop(image, "nw", naturalWidth, naturalHeight, [
initialWidth / 2,
initialHeight / 4,
]);
Keyboard.keyDown(KEYS.ESCAPE);
const widthToHeightRatio = image.width / image.height;
const canvas = await exportToCanvas({
elements: [image],
// @ts-ignore
appState: h.state,
files: h.app.files,
exportPadding: 0,
});
const exportedCanvasRatio = canvas.width / canvas.height;
expect(widthToHeightRatio).toBeCloseTo(exportedCanvasRatio);
const svg = await exportToSvg({
elements: [image],
// @ts-ignore
appState: h.state,
files: h.app.files,
exportPadding: 0,
});
const svgWidth = svg.getAttribute("width");
const svgHeight = svg.getAttribute("height");
expect(svgWidth).toBeDefined();
expect(svgHeight).toBeDefined();
const exportedSvgRatio = Number(svgWidth) / Number(svgHeight);
expect(widthToHeightRatio).toBeCloseTo(exportedSvgRatio);
});
});
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import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import type { ObservedAppState } from "@excalidraw/excalidraw/types";
import type { LinearElementEditor } from "@excalidraw/element";
import type { SceneElementsMap } from "@excalidraw/element/types";
import { AppStateDelta, Delta, ElementsDelta } from "../src/delta";
describe("ElementsDelta", () => {
describe("elements delta calculation", () => {
it("should not throw when element gets removed but was already deleted", () => {
const element = API.createElement({
type: "rectangle",
x: 100,
y: 100,
isDeleted: true,
});
const prevElements = new Map([[element.id, element]]);
const nextElements = new Map();
expect(() =>
ElementsDelta.calculate(prevElements, nextElements),
).not.toThrow();
});
it("should not throw when adding element as already deleted", () => {
const element = API.createElement({
type: "rectangle",
x: 100,
y: 100,
isDeleted: true,
});
const prevElements = new Map();
const nextElements = new Map([[element.id, element]]);
expect(() =>
ElementsDelta.calculate(prevElements, nextElements),
).not.toThrow();
});
it("should create updated delta even when there is only version and versionNonce change", () => {
const baseElement = API.createElement({
type: "rectangle",
x: 100,
y: 100,
strokeColor: "#000000",
backgroundColor: "#ffffff",
});
const modifiedElement = {
...baseElement,
version: baseElement.version + 1,
versionNonce: baseElement.versionNonce + 1,
};
// Create maps for the delta calculation
const prevElements = new Map([[baseElement.id, baseElement]]);
const nextElements = new Map([[modifiedElement.id, modifiedElement]]);
// Calculate the delta
const delta = ElementsDelta.calculate(
prevElements as SceneElementsMap,
nextElements as SceneElementsMap,
);
expect(delta).toEqual(
ElementsDelta.create(
{},
{},
{
[baseElement.id]: Delta.create(
{
version: baseElement.version,
versionNonce: baseElement.versionNonce,
},
{
version: baseElement.version + 1,
versionNonce: baseElement.versionNonce + 1,
},
),
},
),
);
});
});
describe("squash", () => {
it("should not squash when second delta is empty", () => {
const updatedDelta = Delta.create(
{ x: 100, version: 1, versionNonce: 1 },
{ x: 200, version: 2, versionNonce: 2 },
);
const elementsDelta1 = ElementsDelta.create(
{},
{},
{ id1: updatedDelta },
);
const elementsDelta2 = ElementsDelta.empty();
const elementsDelta = elementsDelta1.squash(elementsDelta2);
expect(elementsDelta.isEmpty()).toBeFalsy();
expect(elementsDelta).toBe(elementsDelta1);
expect(elementsDelta.updated.id1).toBe(updatedDelta);
});
it("should squash mutually exclusive delta types", () => {
const addedDelta = Delta.create(
{ x: 100, version: 1, versionNonce: 1, isDeleted: true },
{ x: 200, version: 2, versionNonce: 2, isDeleted: false },
);
const removedDelta = Delta.create(
{ x: 100, version: 1, versionNonce: 1, isDeleted: false },
{ x: 200, version: 2, versionNonce: 2, isDeleted: true },
);
const updatedDelta = Delta.create(
{ x: 100, version: 1, versionNonce: 1 },
{ x: 200, version: 2, versionNonce: 2 },
);
const elementsDelta1 = ElementsDelta.create(
{ id1: addedDelta },
{ id2: removedDelta },
{},
);
const elementsDelta2 = ElementsDelta.create(
{},
{},
{ id3: updatedDelta },
);
const elementsDelta = elementsDelta1.squash(elementsDelta2);
expect(elementsDelta.isEmpty()).toBeFalsy();
expect(elementsDelta).toBe(elementsDelta1);
expect(elementsDelta.added.id1).toBe(addedDelta);
expect(elementsDelta.removed.id2).toBe(removedDelta);
expect(elementsDelta.updated.id3).toBe(updatedDelta);
});
it("should squash the same delta types", () => {
const elementsDelta1 = ElementsDelta.create(
{
id1: Delta.create(
{ x: 100, version: 1, versionNonce: 1, isDeleted: true },
{ x: 200, version: 2, versionNonce: 2, isDeleted: false },
),
},
{
id2: Delta.create(
{ x: 100, version: 1, versionNonce: 1, isDeleted: false },
{ x: 200, version: 2, versionNonce: 2, isDeleted: true },
),
},
{
id3: Delta.create(
{ x: 100, version: 1, versionNonce: 1 },
{ x: 200, version: 2, versionNonce: 2 },
),
},
);
const elementsDelta2 = ElementsDelta.create(
{
id1: Delta.create(
{ y: 100, version: 2, versionNonce: 2, isDeleted: true },
{ y: 200, version: 3, versionNonce: 3, isDeleted: false },
),
},
{
id2: Delta.create(
{ y: 100, version: 2, versionNonce: 2, isDeleted: false },
{ y: 200, version: 3, versionNonce: 3, isDeleted: true },
),
},
{
id3: Delta.create(
{ y: 100, version: 2, versionNonce: 2 },
{ y: 200, version: 3, versionNonce: 3 },
),
},
);
const elementsDelta = elementsDelta1.squash(elementsDelta2);
expect(elementsDelta.isEmpty()).toBeFalsy();
expect(elementsDelta).toBe(elementsDelta1);
expect(elementsDelta.added.id1).toEqual(
Delta.create(
{ x: 100, y: 100, version: 2, versionNonce: 2, isDeleted: true },
{ x: 200, y: 200, version: 3, versionNonce: 3, isDeleted: false },
),
);
expect(elementsDelta.removed.id2).toEqual(
Delta.create(
{ x: 100, y: 100, version: 2, versionNonce: 2, isDeleted: false },
{ x: 200, y: 200, version: 3, versionNonce: 3, isDeleted: true },
),
);
expect(elementsDelta.updated.id3).toEqual(
Delta.create(
{ x: 100, y: 100, version: 2, versionNonce: 2 },
{ x: 200, y: 200, version: 3, versionNonce: 3 },
),
);
});
it("should squash different delta types ", () => {
// id1: added -> updated => added
// id2: removed -> added => added
// id3: updated -> removed => removed
const elementsDelta1 = ElementsDelta.create(
{
id1: Delta.create(
{ x: 100, version: 1, versionNonce: 1, isDeleted: true },
{ x: 101, version: 2, versionNonce: 2, isDeleted: false },
),
},
{
id2: Delta.create(
{ x: 200, version: 1, versionNonce: 1, isDeleted: false },
{ x: 201, version: 2, versionNonce: 2, isDeleted: true },
),
},
{
id3: Delta.create(
{ x: 300, version: 1, versionNonce: 1 },
{ x: 301, version: 2, versionNonce: 2 },
),
},
);
const elementsDelta2 = ElementsDelta.create(
{
id2: Delta.create(
{ y: 200, version: 2, versionNonce: 2, isDeleted: true },
{ y: 201, version: 3, versionNonce: 3, isDeleted: false },
),
},
{
id3: Delta.create(
{ y: 300, version: 2, versionNonce: 2, isDeleted: false },
{ y: 301, version: 3, versionNonce: 3, isDeleted: true },
),
},
{
id1: Delta.create(
{ y: 100, version: 2, versionNonce: 2 },
{ y: 101, version: 3, versionNonce: 3 },
),
},
);
const elementsDelta = elementsDelta1.squash(elementsDelta2);
expect(elementsDelta.isEmpty()).toBeFalsy();
expect(elementsDelta).toBe(elementsDelta1);
expect(elementsDelta.added).toEqual({
id1: Delta.create(
{ x: 100, y: 100, version: 2, versionNonce: 2, isDeleted: true },
{ x: 101, y: 101, version: 3, versionNonce: 3, isDeleted: false },
),
id2: Delta.create(
{ x: 200, y: 200, version: 2, versionNonce: 2, isDeleted: true },
{ x: 201, y: 201, version: 3, versionNonce: 3, isDeleted: false },
),
});
expect(elementsDelta.removed).toEqual({
id3: Delta.create(
{ x: 300, y: 300, version: 2, versionNonce: 2, isDeleted: false },
{ x: 301, y: 301, version: 3, versionNonce: 3, isDeleted: true },
),
});
expect(elementsDelta.updated).toEqual({});
});
it("should squash bound elements", () => {
const elementsDelta1 = ElementsDelta.create(
{},
{},
{
id1: Delta.create(
{
version: 1,
versionNonce: 1,
boundElements: [{ id: "t1", type: "text" }],
},
{
version: 2,
versionNonce: 2,
boundElements: [{ id: "t2", type: "text" }],
},
),
},
);
const elementsDelta2 = ElementsDelta.create(
{},
{},
{
id1: Delta.create(
{
version: 2,
versionNonce: 2,
boundElements: [{ id: "a1", type: "arrow" }],
},
{
version: 3,
versionNonce: 3,
boundElements: [{ id: "a2", type: "arrow" }],
},
),
},
);
const elementsDelta = elementsDelta1.squash(elementsDelta2);
expect(elementsDelta.updated.id1.deleted.boundElements).toEqual([
{ id: "t1", type: "text" },
{ id: "a1", type: "arrow" },
]);
expect(elementsDelta.updated.id1.inserted.boundElements).toEqual([
{ id: "t2", type: "text" },
{ id: "a2", type: "arrow" },
]);
});
});
});
describe("AppStateDelta", () => {
describe("ensure stable delta properties order", () => {
it("should maintain stable order for root properties", () => {
const name = "untitled scene";
const selectedLinearElement = {
elementId: "id1" as LinearElementEditor["elementId"],
isEditing: false,
};
const commonAppState = {
viewBackgroundColor: "#ffffff",
selectedElementIds: {},
selectedGroupIds: {},
editingGroupId: null,
croppingElementId: null,
editingLinearElementId: null,
selectedLinearElementIsEditing: null,
lockedMultiSelections: {},
activeLockedId: null,
};
const prevAppState1: ObservedAppState = {
...commonAppState,
name: "",
selectedLinearElement: null,
};
const nextAppState1: ObservedAppState = {
...commonAppState,
name,
selectedLinearElement,
};
const prevAppState2: ObservedAppState = {
selectedLinearElement: null,
name: "",
...commonAppState,
};
const nextAppState2: ObservedAppState = {
selectedLinearElement,
name,
...commonAppState,
};
const delta1 = AppStateDelta.calculate(prevAppState1, nextAppState1);
const delta2 = AppStateDelta.calculate(prevAppState2, nextAppState2);
expect(JSON.stringify(delta1)).toBe(JSON.stringify(delta2));
});
it("should maintain stable order for selectedElementIds", () => {
const commonAppState = {
name: "",
viewBackgroundColor: "#ffffff",
selectedGroupIds: {},
editingGroupId: null,
croppingElementId: null,
selectedLinearElement: null,
activeLockedId: null,
lockedMultiSelections: {},
};
const prevAppState1: ObservedAppState = {
...commonAppState,
selectedElementIds: { id5: true, id2: true, id4: true },
};
const nextAppState1: ObservedAppState = {
...commonAppState,
selectedElementIds: {
id1: true,
id2: true,
id3: true,
},
};
const prevAppState2: ObservedAppState = {
...commonAppState,
selectedElementIds: { id4: true, id2: true, id5: true },
};
const nextAppState2: ObservedAppState = {
...commonAppState,
selectedElementIds: {
id3: true,
id2: true,
id1: true,
},
};
const delta1 = AppStateDelta.calculate(prevAppState1, nextAppState1);
const delta2 = AppStateDelta.calculate(prevAppState2, nextAppState2);
expect(JSON.stringify(delta1)).toBe(JSON.stringify(delta2));
});
it("should maintain stable order for selectedGroupIds", () => {
const commonAppState = {
name: "",
viewBackgroundColor: "#ffffff",
selectedElementIds: {},
editingGroupId: null,
croppingElementId: null,
selectedLinearElement: null,
activeLockedId: null,
lockedMultiSelections: {},
};
const prevAppState1: ObservedAppState = {
...commonAppState,
selectedGroupIds: { id5: false, id2: true, id4: true, id0: true },
};
const nextAppState1: ObservedAppState = {
...commonAppState,
selectedGroupIds: {
id0: true,
id1: true,
id2: false,
id3: true,
},
};
const prevAppState2: ObservedAppState = {
...commonAppState,
selectedGroupIds: { id0: true, id4: true, id2: true, id5: false },
};
const nextAppState2: ObservedAppState = {
...commonAppState,
selectedGroupIds: {
id3: true,
id2: false,
id1: true,
id0: true,
},
};
const delta1 = AppStateDelta.calculate(prevAppState1, nextAppState1);
const delta2 = AppStateDelta.calculate(prevAppState2, nextAppState2);
expect(JSON.stringify(delta1)).toBe(JSON.stringify(delta2));
});
});
describe("squash", () => {
it("should not squash when second delta is empty", () => {
const delta = Delta.create(
{ name: "untitled scene" },
{ name: "titled scene" },
);
const appStateDelta1 = AppStateDelta.create(delta);
const appStateDelta2 = AppStateDelta.empty();
const appStateDelta = appStateDelta1.squash(appStateDelta2);
expect(appStateDelta.isEmpty()).toBeFalsy();
expect(appStateDelta).toBe(appStateDelta1);
expect(appStateDelta.delta).toBe(delta);
});
it("should squash exclusive properties", () => {
const delta1 = Delta.create(
{ name: "untitled scene" },
{ name: "titled scene" },
);
const delta2 = Delta.create(
{ viewBackgroundColor: "#ffffff" },
{ viewBackgroundColor: "#000000" },
);
const appStateDelta1 = AppStateDelta.create(delta1);
const appStateDelta2 = AppStateDelta.create(delta2);
const appStateDelta = appStateDelta1.squash(appStateDelta2);
expect(appStateDelta.isEmpty()).toBeFalsy();
expect(appStateDelta).toBe(appStateDelta1);
expect(appStateDelta.delta).toEqual(
Delta.create(
{ name: "untitled scene", viewBackgroundColor: "#ffffff" },
{ name: "titled scene", viewBackgroundColor: "#000000" },
),
);
});
it("should squash selectedElementIds, selectedGroupIds and lockedMultiSelections", () => {
const delta1 = Delta.create<Partial<ObservedAppState>>(
{
name: "untitled scene",
selectedElementIds: { id1: true },
selectedGroupIds: {},
lockedMultiSelections: { g1: true },
},
{
name: "titled scene",
selectedElementIds: { id2: true },
selectedGroupIds: { g1: true },
lockedMultiSelections: {},
},
);
const delta2 = Delta.create<Partial<ObservedAppState>>(
{
selectedElementIds: { id3: true },
selectedGroupIds: { g1: true },
lockedMultiSelections: {},
},
{
selectedElementIds: { id2: true },
selectedGroupIds: { g2: true, g3: true },
lockedMultiSelections: { g3: true },
},
);
const appStateDelta1 = AppStateDelta.create(delta1);
const appStateDelta2 = AppStateDelta.create(delta2);
const appStateDelta = appStateDelta1.squash(appStateDelta2);
expect(appStateDelta.isEmpty()).toBeFalsy();
expect(appStateDelta).toBe(appStateDelta1);
expect(appStateDelta.delta).toEqual(
Delta.create<Partial<ObservedAppState>>(
{
name: "untitled scene",
selectedElementIds: { id1: true, id3: true },
selectedGroupIds: { g1: true },
lockedMultiSelections: { g1: true },
},
{
name: "titled scene",
selectedElementIds: { id2: true },
selectedGroupIds: { g1: true, g2: true, g3: true },
lockedMultiSelections: { g3: true },
},
),
);
});
});
});
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import {
distributeHorizontally,
distributeVertically,
} from "@excalidraw/excalidraw/actions";
import { defaultLang, setLanguage } from "@excalidraw/excalidraw/i18n";
import { Excalidraw } from "@excalidraw/excalidraw";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { UI, Pointer, Keyboard } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
act,
unmountComponent,
render,
} from "@excalidraw/excalidraw/tests/test-utils";
const mouse = new Pointer("mouse");
// Scenario: three rectangles that will be distributed with gaps
const createAndSelectThreeRectanglesWithGap = () => {
UI.clickTool("rectangle");
mouse.down();
mouse.up(100, 100);
mouse.reset();
UI.clickTool("rectangle");
mouse.down(10, 10);
mouse.up(100, 100);
mouse.reset();
UI.clickTool("rectangle");
mouse.down(300, 300);
mouse.up(100, 100);
mouse.reset();
// Last rectangle is selected by default
Keyboard.withModifierKeys({ shift: true }, () => {
mouse.click(0, 10);
mouse.click(10, 0);
});
};
// Scenario: three rectangles that will be distributed by their centers
const createAndSelectThreeRectanglesWithoutGap = () => {
UI.clickTool("rectangle");
mouse.down();
mouse.up(100, 100);
mouse.reset();
UI.clickTool("rectangle");
mouse.down(10, 10);
mouse.up(200, 200);
mouse.reset();
UI.clickTool("rectangle");
mouse.down(200, 200);
mouse.up(100, 100);
mouse.reset();
// Last rectangle is selected by default
Keyboard.withModifierKeys({ shift: true }, () => {
mouse.click(0, 10);
mouse.click(10, 0);
});
};
describe("distributing", () => {
beforeEach(async () => {
unmountComponent();
mouse.reset();
await act(() => {
return setLanguage(defaultLang);
});
await render(<Excalidraw handleKeyboardGlobally={true} />);
});
it("should distribute selected elements horizontally", async () => {
createAndSelectThreeRectanglesWithGap();
expect(API.getSelectedElements()[0].x).toEqual(0);
expect(API.getSelectedElements()[1].x).toEqual(10);
expect(API.getSelectedElements()[2].x).toEqual(300);
API.executeAction(distributeHorizontally);
expect(API.getSelectedElements()[0].x).toEqual(0);
expect(API.getSelectedElements()[1].x).toEqual(150);
expect(API.getSelectedElements()[2].x).toEqual(300);
});
it("should distribute selected elements vertically", async () => {
createAndSelectThreeRectanglesWithGap();
expect(API.getSelectedElements()[0].y).toEqual(0);
expect(API.getSelectedElements()[1].y).toEqual(10);
expect(API.getSelectedElements()[2].y).toEqual(300);
API.executeAction(distributeVertically);
expect(API.getSelectedElements()[0].y).toEqual(0);
expect(API.getSelectedElements()[1].y).toEqual(150);
expect(API.getSelectedElements()[2].y).toEqual(300);
});
it("should distribute selected elements horizontally based on their centers", async () => {
createAndSelectThreeRectanglesWithoutGap();
expect(API.getSelectedElements()[0].x).toEqual(0);
expect(API.getSelectedElements()[1].x).toEqual(10);
expect(API.getSelectedElements()[2].x).toEqual(200);
API.executeAction(distributeHorizontally);
expect(API.getSelectedElements()[0].x).toEqual(0);
expect(API.getSelectedElements()[1].x).toEqual(50);
expect(API.getSelectedElements()[2].x).toEqual(200);
});
it("should distribute selected elements vertically with based on their centers", async () => {
createAndSelectThreeRectanglesWithoutGap();
expect(API.getSelectedElements()[0].y).toEqual(0);
expect(API.getSelectedElements()[1].y).toEqual(10);
expect(API.getSelectedElements()[2].y).toEqual(200);
API.executeAction(distributeVertically);
expect(API.getSelectedElements()[0].y).toEqual(0);
expect(API.getSelectedElements()[1].y).toEqual(50);
expect(API.getSelectedElements()[2].y).toEqual(200);
});
});
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import { pointFrom } from "@excalidraw/math";
import {
FONT_FAMILY,
ORIG_ID,
ROUNDNESS,
isPrimitive,
} from "@excalidraw/common";
import { Excalidraw, mutateElement } from "@excalidraw/excalidraw";
import { actionDuplicateSelection } from "@excalidraw/excalidraw/actions";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { UI, Keyboard, Pointer } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
act,
assertElements,
getCloneByOrigId,
render,
} from "@excalidraw/excalidraw/tests/test-utils";
import type { LocalPoint } from "@excalidraw/math";
import { duplicateElement, duplicateElements } from "../src/duplicate";
import type { ExcalidrawLinearElement } from "../src/types";
const { h } = window;
const mouse = new Pointer("mouse");
const assertCloneObjects = (source: any, clone: any) => {
for (const key in clone) {
if (clone.hasOwnProperty(key) && !isPrimitive(clone[key])) {
expect(clone[key]).not.toBe(source[key]);
if (source[key]) {
assertCloneObjects(source[key], clone[key]);
}
}
}
};
describe("duplicating single elements", () => {
it("clones arrow element", () => {
const element = API.createElement({
type: "arrow",
x: 0,
y: 0,
strokeColor: "#000000",
backgroundColor: "transparent",
fillStyle: "hachure",
strokeWidth: 1,
strokeStyle: "solid",
roundness: { type: ROUNDNESS.PROPORTIONAL_RADIUS },
roughness: 1,
opacity: 100,
});
// @ts-ignore
element.__proto__ = { hello: "world" };
mutateElement(element, new Map(), {
points: [pointFrom<LocalPoint>(1, 2), pointFrom<LocalPoint>(3, 4)],
});
const copy = duplicateElement(null, new Map(), element, true);
assertCloneObjects(element, copy);
// assert we clone the object's prototype
// @ts-ignore
expect(copy.__proto__).toEqual({ hello: "world" });
expect(copy.hasOwnProperty("hello")).toBe(false);
expect(copy.points).not.toBe(element.points);
expect(copy).not.toHaveProperty("shape");
expect(copy.id).not.toBe(element.id);
expect(typeof copy.id).toBe("string");
expect(copy.seed).not.toBe(element.seed);
expect(typeof copy.seed).toBe("number");
expect(copy).toEqual({
...element,
id: copy.id,
seed: copy.seed,
version: copy.version,
versionNonce: copy.versionNonce,
});
});
it("clones text element", () => {
const element = API.createElement({
type: "text",
x: 0,
y: 0,
strokeColor: "#000000",
backgroundColor: "transparent",
fillStyle: "hachure",
strokeWidth: 1,
strokeStyle: "solid",
roundness: null,
roughness: 1,
opacity: 100,
text: "hello",
fontSize: 20,
fontFamily: FONT_FAMILY.Virgil,
textAlign: "left",
verticalAlign: "top",
});
const copy = duplicateElement(null, new Map(), element);
assertCloneObjects(element, copy);
expect(copy).not.toHaveProperty("points");
expect(copy).not.toHaveProperty("shape");
expect(copy.id).not.toBe(element.id);
expect(typeof copy.id).toBe("string");
expect(typeof copy.seed).toBe("number");
});
});
describe("duplicating multiple elements", () => {
it("duplicateElements should clone bindings", () => {
const rectangle1 = API.createElement({
type: "rectangle",
id: "rectangle1",
boundElements: [
{ id: "arrow1", type: "arrow" },
{ id: "arrow2", type: "arrow" },
{ id: "text1", type: "text" },
],
});
const text1 = API.createElement({
type: "text",
id: "text1",
containerId: "rectangle1",
});
const arrow1 = API.createElement({
type: "arrow",
id: "arrow1",
startBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
});
const arrow2 = API.createElement({
type: "arrow",
id: "arrow2",
endBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
boundElements: [{ id: "text2", type: "text" }],
});
const text2 = API.createElement({
type: "text",
id: "text2",
containerId: "arrow2",
});
// -------------------------------------------------------------------------
const origElements = [rectangle1, text1, arrow1, arrow2, text2] as const;
const { duplicatedElements } = duplicateElements({
type: "everything",
elements: origElements,
});
// generic id in-equality checks
// --------------------------------------------------------------------------
expect(origElements.map((e) => e.type)).toEqual(
duplicatedElements.map((e) => e.type),
);
origElements.forEach((origElement, idx) => {
const clonedElement = duplicatedElements[idx];
expect(origElement).toEqual(
expect.objectContaining({
id: expect.not.stringMatching(clonedElement.id),
type: clonedElement.type,
}),
);
if ("containerId" in origElement) {
expect(origElement.containerId).not.toBe(
(clonedElement as any).containerId,
);
}
if ("endBinding" in origElement) {
if (origElement.endBinding) {
expect(origElement.endBinding.elementId).not.toBe(
(clonedElement as any).endBinding?.elementId,
);
} else {
expect((clonedElement as any).endBinding).toBeNull();
}
}
if ("startBinding" in origElement) {
if (origElement.startBinding) {
expect(origElement.startBinding.elementId).not.toBe(
(clonedElement as any).startBinding?.elementId,
);
} else {
expect((clonedElement as any).startBinding).toBeNull();
}
}
});
// --------------------------------------------------------------------------
const clonedArrows = duplicatedElements.filter(
(e) => e.type === "arrow",
) as ExcalidrawLinearElement[];
const [clonedRectangle, clonedText1, , clonedArrow2, clonedArrowLabel] =
duplicatedElements as any as typeof origElements;
expect(clonedText1.containerId).toBe(clonedRectangle.id);
expect(
clonedRectangle.boundElements!.find((e) => e.id === clonedText1.id),
).toEqual(
expect.objectContaining({
id: clonedText1.id,
type: clonedText1.type,
}),
);
expect(clonedRectangle.type).toBe("rectangle");
clonedArrows.forEach((arrow) => {
expect(
clonedRectangle.boundElements!.find((e) => e.id === arrow.id),
).toEqual(
expect.objectContaining({
id: arrow.id,
type: arrow.type,
}),
);
if (arrow.endBinding) {
expect(arrow.endBinding.elementId).toBe(clonedRectangle.id);
}
if (arrow.startBinding) {
expect(arrow.startBinding.elementId).toBe(clonedRectangle.id);
}
});
expect(clonedArrow2.boundElements).toEqual([
{ type: "text", id: clonedArrowLabel.id },
]);
expect(clonedArrowLabel.containerId).toBe(clonedArrow2.id);
});
it("should remove id references of elements that aren't found", () => {
const rectangle1 = API.createElement({
type: "rectangle",
id: "rectangle1",
boundElements: [
// should keep
{ id: "arrow1", type: "arrow" },
// should drop
{ id: "arrow-not-exists", type: "arrow" },
// should drop
{ id: "text-not-exists", type: "text" },
],
});
const arrow1 = API.createElement({
type: "arrow",
id: "arrow1",
startBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
});
const text1 = API.createElement({
type: "text",
id: "text1",
containerId: "rectangle-not-exists",
});
const arrow2 = API.createElement({
type: "arrow",
id: "arrow2",
startBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
endBinding: {
elementId: "rectangle-not-exists",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
});
const arrow3 = API.createElement({
type: "arrow",
id: "arrow3",
startBinding: {
elementId: "rectangle-not-exists",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
endBinding: {
elementId: "rectangle1",
focus: 0.2,
gap: 7,
fixedPoint: [0.5, 1],
},
});
// -------------------------------------------------------------------------
const origElements = [rectangle1, text1, arrow1, arrow2, arrow3] as const;
const duplicatedElements = duplicateElements({
type: "everything",
elements: origElements,
}).duplicatedElements as any as typeof origElements;
const [
clonedRectangle,
clonedText1,
clonedArrow1,
clonedArrow2,
clonedArrow3,
] = duplicatedElements;
expect(clonedRectangle.boundElements).toEqual([
{ id: clonedArrow1.id, type: "arrow" },
]);
expect(clonedText1.containerId).toBe(null);
expect(clonedArrow2.startBinding).toEqual({
...arrow2.startBinding,
elementId: clonedRectangle.id,
});
expect(clonedArrow2.endBinding).toBe(null);
expect(clonedArrow3.startBinding).toBe(null);
expect(clonedArrow3.endBinding).toEqual({
...arrow3.endBinding,
elementId: clonedRectangle.id,
});
});
describe("should duplicate all group ids", () => {
it("should regenerate all group ids and keep them consistent across elements", () => {
const rectangle1 = API.createElement({
type: "rectangle",
groupIds: ["g1"],
});
const rectangle2 = API.createElement({
type: "rectangle",
groupIds: ["g2", "g1"],
});
const rectangle3 = API.createElement({
type: "rectangle",
groupIds: ["g2", "g1"],
});
const origElements = [rectangle1, rectangle2, rectangle3] as const;
const { duplicatedElements } = duplicateElements({
type: "everything",
elements: origElements,
});
const [clonedRectangle1, clonedRectangle2, clonedRectangle3] =
duplicatedElements;
expect(rectangle1.groupIds[0]).not.toBe(clonedRectangle1.groupIds[0]);
expect(rectangle2.groupIds[0]).not.toBe(clonedRectangle2.groupIds[0]);
expect(rectangle2.groupIds[1]).not.toBe(clonedRectangle2.groupIds[1]);
expect(clonedRectangle1.groupIds[0]).toBe(clonedRectangle2.groupIds[1]);
expect(clonedRectangle2.groupIds[0]).toBe(clonedRectangle3.groupIds[0]);
expect(clonedRectangle2.groupIds[1]).toBe(clonedRectangle3.groupIds[1]);
});
it("should keep and regenerate ids of groups even if invalid", () => {
// lone element shouldn't be able to be grouped with itself,
// but hard to check against in a performant way so we ignore it
const rectangle1 = API.createElement({
type: "rectangle",
groupIds: ["g1"],
});
const {
duplicatedElements: [clonedRectangle1],
} = duplicateElements({ type: "everything", elements: [rectangle1] });
expect(typeof clonedRectangle1.groupIds[0]).toBe("string");
expect(rectangle1.groupIds[0]).not.toBe(clonedRectangle1.groupIds[0]);
});
});
});
describe("group-related duplication", () => {
beforeEach(async () => {
await render(<Excalidraw />);
});
it("action-duplicating within group", async () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
groupIds: ["group1"],
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
groupIds: ["group1"],
});
API.setElements([rectangle1, rectangle2]);
API.setSelectedElements([rectangle2], "group1");
act(() => {
h.app.actionManager.executeAction(actionDuplicateSelection);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ id: rectangle2.id },
{ [ORIG_ID]: rectangle2.id, selected: true, groupIds: ["group1"] },
]);
expect(h.state.editingGroupId).toBe("group1");
});
it("alt-duplicating within group", async () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
groupIds: ["group1"],
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
groupIds: ["group1"],
});
API.setElements([rectangle1, rectangle2]);
API.setSelectedElements([rectangle2], "group1");
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle2.x + 5, rectangle2.y + 5);
mouse.up(rectangle2.x + 50, rectangle2.y + 50);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ id: rectangle2.id },
{ [ORIG_ID]: rectangle2.id, selected: true, groupIds: ["group1"] },
]);
expect(h.state.editingGroupId).toBe("group1");
});
it("alt-duplicating within group away outside frame", () => {
const frame = API.createElement({
type: "frame",
x: 0,
y: 0,
width: 100,
height: 100,
});
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
width: 50,
height: 50,
groupIds: ["group1"],
frameId: frame.id,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
width: 50,
height: 50,
groupIds: ["group1"],
frameId: frame.id,
});
API.setElements([frame, rectangle1, rectangle2]);
API.setSelectedElements([rectangle2], "group1");
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle2.x + 5, rectangle2.y + 5);
mouse.up(frame.x + frame.width + 50, frame.y + frame.height + 50);
});
assertElements(h.elements, [
{ id: frame.id },
{ id: rectangle1.id, frameId: frame.id },
{ id: rectangle2.id, frameId: frame.id },
{ [ORIG_ID]: rectangle2.id, selected: true, groupIds: [], frameId: null },
]);
expect(h.state.editingGroupId).toBe(null);
});
});
describe("duplication z-order", () => {
beforeEach(async () => {
await render(<Excalidraw />);
});
it("duplication z order with Cmd+D for the lowest z-ordered element should be +1 for the clone", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
});
API.setElements([rectangle1, rectangle2, rectangle3]);
API.setSelectedElements([rectangle1]);
act(() => {
h.app.actionManager.executeAction(actionDuplicateSelection);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ [ORIG_ID]: rectangle1.id, selected: true },
{ id: rectangle2.id },
{ id: rectangle3.id },
]);
});
it("duplication z order with Cmd+D for the highest z-ordered element should be +1 for the clone", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
});
API.setElements([rectangle1, rectangle2, rectangle3]);
API.setSelectedElements([rectangle3]);
act(() => {
h.app.actionManager.executeAction(actionDuplicateSelection);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ id: rectangle2.id },
{ id: rectangle3.id },
{ [ORIG_ID]: rectangle3.id, selected: true },
]);
});
it("duplication z order with alt+drag for the lowest z-ordered element should be +1 for the clone", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
});
API.setElements([rectangle1, rectangle2, rectangle3]);
mouse.select(rectangle1);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle1.x + 5, rectangle1.y + 5);
mouse.up(rectangle1.x + 5, rectangle1.y + 5);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ [ORIG_ID]: rectangle1.id, selected: true },
{ id: rectangle2.id },
{ id: rectangle3.id },
]);
});
it("duplication z order with alt+drag for the highest z-ordered element should be +1 for the clone", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
});
API.setElements([rectangle1, rectangle2, rectangle3]);
mouse.select(rectangle3);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle3.x + 5, rectangle3.y + 5);
mouse.up(rectangle3.x + 5, rectangle3.y + 5);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ id: rectangle2.id },
{ id: rectangle3.id },
{ [ORIG_ID]: rectangle3.id, selected: true },
]);
});
it("duplication z order with alt+drag for the lowest z-ordered element should be +1 for the clone", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
});
API.setElements([rectangle1, rectangle2, rectangle3]);
mouse.select(rectangle1);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle1.x + 5, rectangle1.y + 5);
mouse.up(rectangle1.x + 5, rectangle1.y + 5);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ [ORIG_ID]: rectangle1.id, selected: true },
{ id: rectangle2.id },
{ id: rectangle3.id },
]);
});
it("duplication z order with alt+drag with grouped elements should consider the group together when determining z-index", () => {
const rectangle1 = API.createElement({
type: "rectangle",
x: 0,
y: 0,
groupIds: ["group1"],
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 10,
y: 10,
groupIds: ["group1"],
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 20,
y: 20,
groupIds: ["group1"],
});
API.setElements([rectangle1, rectangle2, rectangle3]);
mouse.select(rectangle1);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle1.x + 5, rectangle1.y + 5);
mouse.up(rectangle1.x + 15, rectangle1.y + 15);
});
assertElements(h.elements, [
{ id: rectangle1.id },
{ id: rectangle2.id },
{ id: rectangle3.id },
{ [ORIG_ID]: rectangle1.id, selected: true },
{ [ORIG_ID]: rectangle2.id, selected: true },
{ [ORIG_ID]: rectangle3.id, selected: true },
]);
});
it("alt-duplicating text container (in-order)", async () => {
const [rectangle, text] = API.createTextContainer();
API.setElements([rectangle, text]);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle.x + 5, rectangle.y + 5);
mouse.up(rectangle.x + 15, rectangle.y + 15);
});
assertElements(h.elements, [
{ id: rectangle.id },
{ id: text.id, containerId: rectangle.id },
{ [ORIG_ID]: rectangle.id, selected: true },
{
[ORIG_ID]: text.id,
containerId: getCloneByOrigId(rectangle.id)?.id,
},
]);
});
it("alt-duplicating text container (out-of-order)", async () => {
const [rectangle, text] = API.createTextContainer();
API.setElements([text, rectangle]);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(rectangle.x + 5, rectangle.y + 5);
mouse.up(rectangle.x + 15, rectangle.y + 15);
});
assertElements(h.elements, [
{ id: rectangle.id },
{ id: text.id, containerId: rectangle.id },
{ [ORIG_ID]: rectangle.id, selected: true },
{
[ORIG_ID]: text.id,
containerId: getCloneByOrigId(rectangle.id)?.id,
},
]);
});
it("alt-duplicating labeled arrows (in-order)", async () => {
const [arrow, text] = API.createLabeledArrow();
API.setElements([arrow, text]);
API.setSelectedElements([arrow]);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(arrow.x + 5, arrow.y + 5);
mouse.up(arrow.x + 15, arrow.y + 15);
});
assertElements(h.elements, [
{ id: arrow.id },
{ id: text.id, containerId: arrow.id },
{ [ORIG_ID]: arrow.id, selected: true },
{
[ORIG_ID]: text.id,
containerId: getCloneByOrigId(arrow.id)?.id,
},
]);
expect(h.state.selectedLinearElement).toEqual(
expect.objectContaining({ elementId: getCloneByOrigId(arrow.id)?.id }),
);
});
it("alt-duplicating labeled arrows (out-of-order)", async () => {
const [arrow, text] = API.createLabeledArrow();
API.setElements([text, arrow]);
API.setSelectedElements([arrow]);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(arrow.x + 5, arrow.y + 5);
mouse.up(arrow.x + 15, arrow.y + 15);
});
assertElements(h.elements, [
{ id: arrow.id },
{ id: text.id, containerId: arrow.id },
{ [ORIG_ID]: arrow.id, selected: true },
{
[ORIG_ID]: text.id,
containerId: getCloneByOrigId(arrow.id)?.id,
},
]);
});
it("alt-duplicating bindable element with bound arrow should keep the arrow on the duplicate", async () => {
const rect = UI.createElement("rectangle", {
x: 0,
y: 0,
width: 100,
height: 100,
});
const arrow = UI.createElement("arrow", {
x: -100,
y: 50,
width: 95,
height: 0,
});
expect(arrow.endBinding?.elementId).toBe(rect.id);
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.down(5, 5);
mouse.up(15, 15);
});
assertElements(h.elements, [
{
id: rect.id,
boundElements: expect.arrayContaining([
expect.objectContaining({ id: arrow.id }),
]),
},
{ [ORIG_ID]: rect.id, boundElements: [], selected: true },
{
id: arrow.id,
endBinding: expect.objectContaining({ elementId: rect.id }),
},
]);
});
});
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import { ARROW_TYPE } from "@excalidraw/common";
import { pointFrom } from "@excalidraw/math";
import { Excalidraw } from "@excalidraw/excalidraw";
import { actionSelectAll } from "@excalidraw/excalidraw/actions";
import { actionDuplicateSelection } from "@excalidraw/excalidraw/actions/actionDuplicateSelection";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { Pointer, UI } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
act,
fireEvent,
GlobalTestState,
queryByTestId,
render,
} from "@excalidraw/excalidraw/tests/test-utils";
import "@excalidraw/utils/test-utils";
import type { LocalPoint } from "@excalidraw/math";
import { bindLinearElement } from "../src/binding";
import { Scene } from "../src/Scene";
import type {
ExcalidrawArrowElement,
ExcalidrawBindableElement,
ExcalidrawElbowArrowElement,
} from "../src/types";
const { h } = window;
const mouse = new Pointer("mouse");
describe("elbow arrow segment move", () => {
beforeEach(async () => {
localStorage.clear();
await render(<Excalidraw handleKeyboardGlobally={true} />);
});
it("can move the second segment of a fully connected elbow arrow", () => {
UI.createElement("rectangle", {
x: -100,
y: -50,
width: 100,
height: 100,
});
UI.createElement("rectangle", {
x: 200,
y: 150,
width: 100,
height: 100,
});
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
mouse.reset();
mouse.moveTo(0, 0);
mouse.click();
mouse.moveTo(200, 200);
mouse.click();
mouse.reset();
mouse.moveTo(100, 100);
mouse.down();
mouse.moveTo(115, 100);
mouse.up();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawElbowArrowElement;
expect(h.state.selectedElementIds).toEqual({ [arrow.id]: true });
expect(arrow.fixedSegments?.length).toBe(1);
expect(arrow.points).toCloselyEqualPoints([
[0, 0],
[110, 0],
[110, 200],
[190, 200],
]);
mouse.reset();
mouse.moveTo(105, 74.275);
mouse.doubleClick();
expect(arrow.points).toCloselyEqualPoints([
[0, 0],
[110, 0],
[110, 200],
[190, 200],
]);
});
it("can move the second segment of an unconnected elbow arrow", () => {
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
mouse.reset();
mouse.moveTo(0, 0);
mouse.click();
mouse.moveTo(250, 200);
mouse.click();
mouse.reset();
mouse.moveTo(125, 100);
mouse.down();
mouse.moveTo(130, 100);
mouse.up();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
expect(arrow.points).toCloselyEqualPoints([
[0, 0],
[130, 0],
[130, 200],
[250, 200],
]);
mouse.reset();
mouse.moveTo(130, 100);
mouse.doubleClick();
expect(arrow.points).toCloselyEqualPoints([
[0, 0],
[125, 0],
[125, 200],
[250, 200],
]);
});
});
describe("elbow arrow routing", () => {
it("can properly generate orthogonal arrow points", () => {
const scene = new Scene();
const arrow = API.createElement({
type: "arrow",
elbowed: true,
}) as ExcalidrawElbowArrowElement;
scene.insertElement(arrow);
h.app.scene.mutateElement(arrow, {
points: [
pointFrom<LocalPoint>(-45 - arrow.x, -100.1 - arrow.y),
pointFrom<LocalPoint>(45 - arrow.x, 99.9 - arrow.y),
],
});
expect(arrow.points).toEqual([
[0, 0],
[0, 100],
[90, 100],
[90, 200],
]);
expect(arrow.x).toEqual(-45);
expect(arrow.y).toEqual(-100.1);
expect(arrow.width).toEqual(90);
expect(arrow.height).toEqual(200);
});
it("can generate proper points for bound elbow arrow", () => {
const scene = new Scene();
const rectangle1 = API.createElement({
type: "rectangle",
x: -150,
y: -150,
width: 100,
height: 100,
}) as ExcalidrawBindableElement;
const rectangle2 = API.createElement({
type: "rectangle",
x: 50,
y: 50,
width: 100,
height: 100,
}) as ExcalidrawBindableElement;
const arrow = API.createElement({
type: "arrow",
elbowed: true,
x: -45,
y: -100.1,
width: 90,
height: 200,
points: [pointFrom(0, 0), pointFrom(90, 200)],
}) as ExcalidrawElbowArrowElement;
scene.insertElement(rectangle1);
scene.insertElement(rectangle2);
scene.insertElement(arrow);
bindLinearElement(arrow, rectangle1, "start", scene);
bindLinearElement(arrow, rectangle2, "end", scene);
expect(arrow.startBinding).not.toBe(null);
expect(arrow.endBinding).not.toBe(null);
h.app.scene.mutateElement(arrow, {
points: [pointFrom<LocalPoint>(0, 0), pointFrom<LocalPoint>(90, 200)],
});
expect(arrow.points).toEqual([
[0, 0],
[45, 0],
[45, 200],
[90, 200],
]);
});
});
describe("elbow arrow ui", () => {
beforeEach(async () => {
localStorage.clear();
await render(<Excalidraw handleKeyboardGlobally={true} />);
fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
button: 2,
clientX: 1,
clientY: 1,
});
const contextMenu = UI.queryContextMenu();
fireEvent.click(queryByTestId(contextMenu!, "stats")!);
});
it("can follow bound shapes", async () => {
UI.createElement("rectangle", {
x: -150,
y: -150,
width: 100,
height: 100,
});
UI.createElement("rectangle", {
x: 50,
y: 50,
width: 100,
height: 100,
});
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
expect(h.state.currentItemArrowType).toBe(ARROW_TYPE.elbow);
mouse.reset();
mouse.moveTo(-43, -99);
mouse.click();
mouse.moveTo(43, 99);
mouse.click();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
expect(arrow.type).toBe("arrow");
expect(arrow.elbowed).toBe(true);
expect(arrow.points).toEqual([
[0, 0],
[45, 0],
[45, 200],
[90, 200],
]);
});
it("can follow bound rotated shapes", async () => {
UI.createElement("rectangle", {
x: -150,
y: -150,
width: 100,
height: 100,
});
UI.createElement("rectangle", {
x: 50,
y: 50,
width: 100,
height: 100,
});
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
mouse.reset();
mouse.moveTo(-43, -99);
mouse.click();
mouse.moveTo(43, 99);
mouse.click();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
mouse.click(51, 51);
const inputAngle = UI.queryStatsProperty("A")?.querySelector(
".drag-input",
) as HTMLInputElement;
UI.updateInput(inputAngle, String("40"));
expect(arrow.points.map((point) => point.map(Math.round))).toEqual([
[0, 0],
[35, 0],
[35, 165],
[103, 165],
]);
});
it("keeps arrow shape when the whole set of arrow and bindables are duplicated", async () => {
UI.createElement("rectangle", {
x: -150,
y: -150,
width: 100,
height: 100,
});
UI.createElement("rectangle", {
x: 50,
y: 50,
width: 100,
height: 100,
});
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
mouse.reset();
mouse.moveTo(-43, -99);
mouse.click();
mouse.moveTo(43, 99);
mouse.click();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
const originalArrowId = arrow.id;
expect(arrow.startBinding).not.toBe(null);
expect(arrow.endBinding).not.toBe(null);
act(() => {
h.app.actionManager.executeAction(actionSelectAll);
});
act(() => {
h.app.actionManager.executeAction(actionDuplicateSelection);
});
expect(h.elements.length).toEqual(6);
const duplicatedArrow = h.scene.getSelectedElements(
h.state,
)[2] as ExcalidrawArrowElement;
expect(duplicatedArrow.id).not.toBe(originalArrowId);
expect(duplicatedArrow.type).toBe("arrow");
expect(duplicatedArrow.elbowed).toBe(true);
expect(duplicatedArrow.points).toEqual([
[0, 0],
[45, 0],
[45, 200],
[90, 200],
]);
expect(arrow.startBinding).not.toBe(null);
expect(arrow.endBinding).not.toBe(null);
});
it("changes arrow shape to unbind variant if only the connected elbow arrow is duplicated", async () => {
UI.createElement("rectangle", {
x: -150,
y: -150,
width: 100,
height: 100,
});
UI.createElement("rectangle", {
x: 50,
y: 50,
width: 100,
height: 100,
});
UI.clickTool("arrow");
UI.clickOnTestId("elbow-arrow");
mouse.reset();
mouse.moveTo(-43, -99);
mouse.click();
mouse.moveTo(43, 99);
mouse.click();
const arrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
const originalArrowId = arrow.id;
expect(arrow.startBinding).not.toBe(null);
expect(arrow.endBinding).not.toBe(null);
act(() => {
h.app.actionManager.executeAction(actionDuplicateSelection);
});
expect(h.elements.length).toEqual(4);
const duplicatedArrow = h.scene.getSelectedElements(
h.state,
)[0] as ExcalidrawArrowElement;
expect(duplicatedArrow.id).not.toBe(originalArrowId);
expect(duplicatedArrow.type).toBe("arrow");
expect(duplicatedArrow.elbowed).toBe(true);
expect(duplicatedArrow.points).toEqual([
[0, 0],
[0, 100],
[90, 100],
[90, 200],
]);
});
});
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import { getEmbedLink } from "../src/embeddable";
describe("YouTube timestamp parsing", () => {
it("should parse YouTube URLs with timestamp in seconds", () => {
const testCases = [
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=90",
expectedStart: 90,
},
{
url: "https://youtu.be/dQw4w9WgXcQ?t=120",
expectedStart: 120,
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&start=150",
expectedStart: 150,
},
];
testCases.forEach(({ url, expectedStart }) => {
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).toContain(`start=${expectedStart}`);
}
});
});
it("should parse YouTube URLs with timestamp in time format", () => {
const testCases = [
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=1m30s",
expectedStart: 90, // 1*60 + 30
},
{
url: "https://youtu.be/dQw4w9WgXcQ?t=2m45s",
expectedStart: 165, // 2*60 + 45
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=1h2m3s",
expectedStart: 3723, // 1*3600 + 2*60 + 3
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=45s",
expectedStart: 45,
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=5m",
expectedStart: 300, // 5*60
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=2h",
expectedStart: 7200, // 2*3600
},
];
testCases.forEach(({ url, expectedStart }) => {
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).toContain(`start=${expectedStart}`);
}
});
});
it("should handle YouTube URLs without timestamps", () => {
const testCases = [
"https://www.youtube.com/watch?v=dQw4w9WgXcQ",
"https://youtu.be/dQw4w9WgXcQ",
"https://www.youtube.com/embed/dQw4w9WgXcQ",
];
testCases.forEach((url) => {
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).not.toContain("start=");
}
});
});
it("should handle YouTube shorts URLs with timestamps", () => {
const url = "https://www.youtube.com/shorts/dQw4w9WgXcQ?t=30";
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).toContain("start=30");
}
// Shorts should have portrait aspect ratio
expect(result?.intrinsicSize).toEqual({ w: 315, h: 560 });
});
it("should handle playlist URLs with timestamps", () => {
const url =
"https://www.youtube.com/playlist?list=PLrAXtmRdnEQy1KbG5lbfgQ0-PKQY6FKYZ&t=60";
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).toContain("start=60");
expect(result.link).toContain("list=PLrAXtmRdnEQy1KbG5lbfgQ0-PKQY6FKYZ");
}
});
it("should handle malformed or edge case timestamps", () => {
const testCases = [
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=abc",
expectedStart: 0, // Invalid timestamp should default to 0
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=",
expectedStart: 0, // Empty timestamp should default to 0
},
{
url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=0",
expectedStart: 0, // Zero timestamp should be handled
},
];
testCases.forEach(({ url, expectedStart }) => {
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
if (expectedStart === 0) {
expect(result.link).not.toContain("start=");
} else {
expect(result.link).toContain(`start=${expectedStart}`);
}
}
});
});
it("should preserve other URL parameters", () => {
const url =
"https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=90&feature=youtu.be&list=PLtest";
const result = getEmbedLink(url);
expect(result).toBeTruthy();
expect(result?.type).toBe("video");
if (result?.type === "video" || result?.type === "generic") {
expect(result.link).toContain("start=90");
expect(result.link).toContain("enablejsapi=1");
}
});
});
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import { KEYS, reseed } from "@excalidraw/common";
import { Excalidraw } from "@excalidraw/excalidraw";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { UI, Keyboard, Pointer } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
render,
unmountComponent,
} from "@excalidraw/excalidraw/tests/test-utils";
unmountComponent();
const { h } = window;
const mouse = new Pointer("mouse");
beforeEach(async () => {
localStorage.clear();
reseed(7);
mouse.reset();
await render(<Excalidraw handleKeyboardGlobally={true} />);
h.state.width = 1000;
h.state.height = 1000;
// The bounds of hand-drawn linear elements may change after flipping, so
// removing this style for testing
UI.clickTool("arrow");
UI.clickByTitle("Architect");
UI.clickTool("selection");
});
describe("flow chart creation", () => {
beforeEach(() => {
API.clearSelection();
const rectangle = API.createElement({
type: "rectangle",
width: 200,
height: 100,
});
API.setElements([rectangle]);
API.setSelectedElements([rectangle]);
});
// multiple at once
it("create multiple successor nodes at once", () => {
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(5);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(3);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(2);
});
it("when directions are changed, only the last same directions will apply", () => {
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_UP);
Keyboard.keyPress(KEYS.ARROW_UP);
Keyboard.keyPress(KEYS.ARROW_UP);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(7);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(4);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(3);
});
it("when escaped, no nodes will be created", () => {
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_UP);
Keyboard.keyPress(KEYS.ARROW_DOWN);
});
Keyboard.keyPress(KEYS.ESCAPE);
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(1);
});
it("create nodes one at a time", () => {
const initialNode = h.elements[0];
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(3);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(2);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(1);
const firstChildNode = h.elements.filter(
(el) => el.type === "rectangle" && el.id !== initialNode.id,
)[0];
expect(firstChildNode).not.toBe(null);
expect(firstChildNode.id).toBe(Object.keys(h.state.selectedElementIds)[0]);
API.setSelectedElements([initialNode]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(5);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(3);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(2);
const secondChildNode = h.elements.filter(
(el) =>
el.type === "rectangle" &&
el.id !== initialNode.id &&
el.id !== firstChildNode.id,
)[0];
expect(secondChildNode).not.toBe(null);
expect(secondChildNode.id).toBe(Object.keys(h.state.selectedElementIds)[0]);
API.setSelectedElements([initialNode]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.length).toBe(7);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(4);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(3);
const thirdChildNode = h.elements.filter(
(el) =>
el.type === "rectangle" &&
el.id !== initialNode.id &&
el.id !== firstChildNode.id &&
el.id !== secondChildNode.id,
)[0];
expect(thirdChildNode).not.toBe(null);
expect(thirdChildNode.id).toBe(Object.keys(h.state.selectedElementIds)[0]);
expect(firstChildNode.x).toBe(secondChildNode.x);
expect(secondChildNode.x).toBe(thirdChildNode.x);
});
});
describe("flow chart navigation", () => {
it("single node at each level", () => {
/**
* ▨ -> ▨ -> ▨ -> ▨ -> ▨
*/
API.clearSelection();
const rectangle = API.createElement({
type: "rectangle",
width: 200,
height: 100,
});
API.setElements([rectangle]);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
expect(h.elements.filter((el) => el.type === "rectangle").length).toBe(5);
expect(h.elements.filter((el) => el.type === "arrow").length).toBe(4);
// all the way to the left, gets us to the first node
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rectangle.id]).toBe(true);
// all the way to the right, gets us to the last node
const rightMostNode = h.elements[h.elements.length - 2];
expect(rightMostNode);
expect(rightMostNode.type).toBe("rectangle");
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rightMostNode.id]).toBe(true);
});
it("multiple nodes at each level", () => {
/**
* from the perspective of the first node, there're four layers, and
* there are four nodes at the second layer
*
* -> ▨
* ▨ -> ▨ -> ▨ -> ▨ -> ▨
* -> ▨
* -> ▨
*/
API.clearSelection();
const rectangle = API.createElement({
type: "rectangle",
width: 200,
height: 100,
});
API.setElements([rectangle]);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
const secondNode = h.elements[1];
const rightMostNode = h.elements[h.elements.length - 2];
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
API.setSelectedElements([rectangle]);
// because of same level cycling,
// going right five times should take us back to the second node again
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[secondNode.id]).toBe(true);
// from the second node, going right three times should take us to the rightmost node
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rightMostNode.id]).toBe(true);
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rectangle.id]).toBe(true);
});
it("take the most obvious link when possible", () => {
/**
* ▨ → ▨ ▨ → ▨
* ↓ ↑
* ▨ → ▨
*/
API.clearSelection();
const rectangle = API.createElement({
type: "rectangle",
width: 200,
height: 100,
});
API.setElements([rectangle]);
API.setSelectedElements([rectangle]);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_DOWN);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_UP);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
Keyboard.withModifierKeys({ ctrl: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.CTRL_OR_CMD);
// last node should be the one that's selected
const rightMostNode = h.elements[h.elements.length - 2];
expect(rightMostNode.type).toBe("rectangle");
expect(h.state.selectedElementIds[rightMostNode.id]).toBe(true);
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
Keyboard.keyPress(KEYS.ARROW_LEFT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rectangle.id]).toBe(true);
// going any direction takes us to the predecessor as well
const predecessorToRightMostNode = h.elements[h.elements.length - 4];
expect(predecessorToRightMostNode.type).toBe("rectangle");
API.setSelectedElements([rightMostNode]);
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_RIGHT);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rightMostNode.id]).not.toBe(true);
expect(h.state.selectedElementIds[predecessorToRightMostNode.id]).toBe(
true,
);
API.setSelectedElements([rightMostNode]);
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_UP);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rightMostNode.id]).not.toBe(true);
expect(h.state.selectedElementIds[predecessorToRightMostNode.id]).toBe(
true,
);
API.setSelectedElements([rightMostNode]);
Keyboard.withModifierKeys({ alt: true }, () => {
Keyboard.keyPress(KEYS.ARROW_DOWN);
});
Keyboard.keyUp(KEYS.ALT);
expect(h.state.selectedElementIds[rightMostNode.id]).not.toBe(true);
expect(h.state.selectedElementIds[predecessorToRightMostNode.id]).toBe(
true,
);
});
});
@@ -0,0 +1,817 @@
/* eslint-disable no-lone-blocks */
import { generateKeyBetween } from "fractional-indexing";
import { arrayToMap } from "@excalidraw/common";
import {
syncInvalidIndices,
syncMovedIndices,
validateFractionalIndices,
} from "@excalidraw/element";
import { deepCopyElement } from "@excalidraw/element";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import type {
ElementsMap,
ExcalidrawElement,
FractionalIndex,
} from "@excalidraw/element/types";
import { InvalidFractionalIndexError } from "../src/fractionalIndex";
describe("sync invalid indices with array order", () => {
describe("should NOT sync empty array", () => {
testMovedIndicesSync({
elements: [],
movedElements: [],
expect: {
unchangedElements: [],
validInput: true,
},
});
testInvalidIndicesSync({
elements: [],
expect: {
unchangedElements: [],
validInput: true,
},
});
});
describe("should NOT sync when index is well defined", () => {
testMovedIndicesSync({
elements: [{ id: "A", index: "a1" }],
movedElements: [],
expect: {
unchangedElements: ["A"],
validInput: true,
},
});
testInvalidIndicesSync({
elements: [{ id: "A", index: "a1" }],
expect: {
unchangedElements: ["A"],
validInput: true,
},
});
});
describe("should NOT sync when indices are well defined", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "C", index: "a3" },
],
movedElements: [],
expect: {
unchangedElements: ["A", "B", "C"],
validInput: true,
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "C", index: "a3" },
],
expect: {
unchangedElements: ["A", "B", "C"],
validInput: true,
},
});
});
describe("should sync when fractional index is not defined", () => {
testMovedIndicesSync({
elements: [{ id: "A" }],
movedElements: ["A"],
expect: {
unchangedElements: [],
},
});
testInvalidIndicesSync({
elements: [{ id: "A" }],
expect: {
unchangedElements: [],
},
});
});
describe("should sync when fractional indices are duplicated", () => {
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a1" },
],
expect: {
unchangedElements: ["A"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a1" },
],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should sync when a fractional index is out of order", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B", index: "a1" },
],
movedElements: ["B"],
expect: {
unchangedElements: ["A"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B", index: "a1" },
],
movedElements: ["A"],
expect: {
unchangedElements: ["B"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B", index: "a1" },
],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should sync when fractional indices are out of order", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a3" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
],
movedElements: ["B", "C"],
expect: {
unchangedElements: ["A"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a3" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should sync when incorrect fractional index is in between correct ones ", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a0" },
{ id: "C", index: "a2" },
],
movedElements: ["B"],
expect: {
unchangedElements: ["A", "C"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a0" },
{ id: "C", index: "a2" },
],
expect: {
unchangedElements: ["A", "C"],
},
});
});
describe("should sync when incorrect fractional index is on top and duplicated below", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
],
movedElements: ["C"],
expect: {
unchangedElements: ["A", "B"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
],
expect: {
unchangedElements: ["A", "B"],
},
});
});
describe("should sync when given a mix of duplicate / invalid indices", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a0" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
{ id: "D", index: "a1" },
{ id: "E", index: "a2" },
],
movedElements: ["C", "D", "E"],
expect: {
unchangedElements: ["A", "B"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a0" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
{ id: "D", index: "a1" },
{ id: "E", index: "a2" },
],
expect: {
unchangedElements: ["A", "B"],
},
});
});
describe("should sync when given a mix of undefined / invalid indices", () => {
testMovedIndicesSync({
elements: [
{ id: "A" },
{ id: "B" },
{ id: "C", index: "a0" },
{ id: "D", index: "a2" },
{ id: "E" },
{ id: "F", index: "a3" },
{ id: "G" },
{ id: "H", index: "a1" },
{ id: "I", index: "a2" },
{ id: "J" },
],
movedElements: ["A", "B", "E", "G", "H", "I", "J"],
expect: {
unchangedElements: ["C", "D", "F"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A" },
{ id: "B" },
{ id: "C", index: "a0" },
{ id: "D", index: "a2" },
{ id: "E" },
{ id: "F", index: "a3" },
{ id: "G" },
{ id: "H", index: "a1" },
{ id: "I", index: "a2" },
{ id: "J" },
],
expect: {
unchangedElements: ["C", "D", "F"],
},
});
});
describe("should sync all moved elements regardless of their validity", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B", index: "a4" },
],
movedElements: ["A"],
expect: {
validInput: true,
unchangedElements: ["B"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B", index: "a4" },
],
movedElements: ["B"],
expect: {
validInput: true,
unchangedElements: ["A"],
},
});
testMovedIndicesSync({
elements: [
{ id: "C", index: "a2" },
{ id: "D", index: "a3" },
{ id: "A", index: "a0" },
{ id: "B", index: "a1" },
],
movedElements: ["C", "D"],
expect: {
unchangedElements: ["A", "B"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "D", index: "a4" },
{ id: "C", index: "a3" },
{ id: "F", index: "a6" },
{ id: "E", index: "a5" },
{ id: "H", index: "a8" },
{ id: "G", index: "a7" },
{ id: "I", index: "a9" },
],
movedElements: ["D", "F", "H"],
expect: {
unchangedElements: ["A", "B", "C", "E", "G", "I"],
},
});
{
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a0" },
{ id: "C", index: "a2" },
],
movedElements: ["B", "C"],
expect: {
unchangedElements: ["A"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a0" },
{ id: "C", index: "a2" },
],
movedElements: ["A", "B"],
expect: {
unchangedElements: ["C"],
},
});
}
testMovedIndicesSync({
elements: [
{ id: "A", index: "a0" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
{ id: "D", index: "a1" },
{ id: "E", index: "a2" },
],
movedElements: ["B", "D", "E"],
expect: {
unchangedElements: ["A", "C"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A" },
{ id: "B" },
{ id: "C", index: "a0" },
{ id: "D", index: "a2" },
{ id: "E" },
{ id: "F", index: "a3" },
{ id: "G" },
{ id: "H", index: "a1" },
{ id: "I", index: "a2" },
{ id: "J" },
],
movedElements: ["A", "B", "D", "E", "F", "G", "J"],
expect: {
unchangedElements: ["C", "H", "I"],
},
});
});
describe("should generate fractions for explicitly moved elements", () => {
describe("should generate a fraction between 'A' and 'C'", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
// doing actual fractions, without jitter 'a1' becomes 'a1V'
// as V is taken as the charset's middle-right value
{ id: "B", index: "a1" },
{ id: "C", index: "a2" },
],
movedElements: ["B"],
expect: {
unchangedElements: ["A", "C"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a1" },
{ id: "C", index: "a2" },
],
expect: {
// as above, B will become fractional
unchangedElements: ["A", "C"],
},
});
});
describe("should generate fractions given duplicated indices", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a01" },
{ id: "B", index: "a01" },
{ id: "C", index: "a01" },
{ id: "D", index: "a01" },
{ id: "E", index: "a02" },
{ id: "F", index: "a02" },
{ id: "G", index: "a02" },
],
movedElements: ["B", "C", "D", "E", "F"],
expect: {
unchangedElements: ["A", "G"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a01" },
{ id: "B", index: "a01" },
{ id: "C", index: "a01" },
{ id: "D", index: "a01" },
{ id: "E", index: "a02" },
{ id: "F", index: "a02" },
{ id: "G", index: "a02" },
],
movedElements: ["A", "C", "D", "E", "G"],
expect: {
unchangedElements: ["B", "F"],
},
});
testMovedIndicesSync({
elements: [
{ id: "A", index: "a01" },
{ id: "B", index: "a01" },
{ id: "C", index: "a01" },
{ id: "D", index: "a01" },
{ id: "E", index: "a02" },
{ id: "F", index: "a02" },
{ id: "G", index: "a02" },
],
movedElements: ["B", "C", "D", "F", "G"],
expect: {
unchangedElements: ["A", "E"],
},
});
testInvalidIndicesSync({
elements: [
{ id: "A", index: "a01" },
{ id: "B", index: "a01" },
{ id: "C", index: "a01" },
{ id: "D", index: "a01" },
{ id: "E", index: "a02" },
{ id: "F", index: "a02" },
{ id: "G", index: "a02" },
],
expect: {
// notice fallback considers first item (E) as a valid one
unchangedElements: ["A", "E"],
},
});
});
});
describe("should be able to sync 20K invalid indices", () => {
const length = 20_000;
describe("should sync all empty indices", () => {
const elements = Array.from({ length }).map((_, index) => ({
id: `A_${index}`,
}));
testMovedIndicesSync({
// elements without fractional index
elements,
movedElements: Array.from({ length }).map((_, index) => `A_${index}`),
expect: {
unchangedElements: [],
},
});
testInvalidIndicesSync({
// elements without fractional index
elements,
expect: {
unchangedElements: [],
},
});
});
describe("should sync all but last index given a growing array of indices", () => {
let lastIndex: string | null = null;
const elements = Array.from({ length }).map((_, index) => {
// going up from 'a0'
lastIndex = generateKeyBetween(lastIndex, null);
return {
id: `A_${index}`,
// assigning the last generated index, so sync can go down from there
// without jitter lastIndex is 'c4BZ' for 20000th element
index: index === length - 1 ? lastIndex : undefined,
};
});
const movedElements = Array.from({ length }).map(
(_, index) => `A_${index}`,
);
// remove last element
movedElements.pop();
testMovedIndicesSync({
elements,
movedElements,
expect: {
unchangedElements: [`A_${length - 1}`],
},
});
testInvalidIndicesSync({
elements,
expect: {
unchangedElements: [`A_${length - 1}`],
},
});
});
describe("should sync all but first index given a declining array of indices", () => {
let lastIndex: string | null = null;
const elements = Array.from({ length }).map((_, index) => {
// going down from 'a0'
lastIndex = generateKeyBetween(null, lastIndex);
return {
id: `A_${index}`,
// without jitter lastIndex is 'XvoR' for 20000th element
index: lastIndex,
};
});
const movedElements = Array.from({ length }).map(
(_, index) => `A_${index}`,
);
// remove first element
movedElements.shift();
testMovedIndicesSync({
elements,
movedElements,
expect: {
unchangedElements: [`A_0`],
},
});
testInvalidIndicesSync({
elements,
expect: {
unchangedElements: [`A_0`],
},
});
});
});
describe("should automatically fallback to fixing all invalid indices", () => {
describe("should fallback to syncing duplicated indices when moved elements are empty", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a1" },
{ id: "C", index: "a1" },
],
// the validation will throw as nothing was synced
// therefore it will lead to triggering the fallback and fixing all invalid indices
movedElements: [],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should fallback to syncing undefined / invalid indices when moved elements are empty", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B" },
{ id: "C", index: "a0" },
],
// since elements are invalid, this will fail the validation
// leading to fallback fixing "B" and "C"
movedElements: [],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should fallback to syncing unordered indices when moved element is invalid", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a1" },
{ id: "B", index: "a2" },
{ id: "C", index: "a1" },
],
movedElements: ["A"],
expect: {
unchangedElements: ["A", "B"],
},
});
});
describe("should fallback when trying to generate an index in between unordered elements", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a2" },
{ id: "B" },
{ id: "C", index: "a1" },
],
// 'B' is invalid, but so is 'C', which was not marked as moved
// therefore it will try to generate a key between 'a2' and 'a1'
// which it cannot do, thus will throw during generation and automatically fallback
movedElements: ["B"],
expect: {
unchangedElements: ["A"],
},
});
});
describe("should fallback when trying to generate an index in between duplicate indices", () => {
testMovedIndicesSync({
elements: [
{ id: "A", index: "a01" },
{ id: "B" },
{ id: "C" },
{ id: "D", index: "a01" },
{ id: "E", index: "a01" },
{ id: "F", index: "a01" },
{ id: "G" },
{ id: "I", index: "a03" },
{ id: "H" },
],
// missed "E" therefore upper bound for 'B' is a01, while lower bound is 'a02'
// therefore, similarly to above, it will fail during key generation and lead to fallback
movedElements: ["B", "C", "D", "F", "G", "H"],
expect: {
unchangedElements: ["A", "I"],
},
});
});
});
});
function testMovedIndicesSync(args: {
elements: { id: string; index?: string }[];
movedElements: string[];
expect: {
unchangedElements: string[];
validInput?: true;
};
}) {
const [elements, movedElements] = prepareArguments(
args.elements,
args.movedElements,
);
const expectUnchangedElements = arrayToMap(
args.expect.unchangedElements.map((x) => ({ id: x })),
);
test(
"should sync invalid indices of moved elements or fallback",
elements,
movedElements,
expectUnchangedElements,
args.expect.validInput,
);
}
function testInvalidIndicesSync(args: {
elements: { id: string; index?: string }[];
expect: {
unchangedElements: string[];
validInput?: true;
};
}) {
const [elements] = prepareArguments(args.elements);
const expectUnchangedElements = arrayToMap(
args.expect.unchangedElements.map((x) => ({ id: x })),
);
test(
"should sync invalid indices of all elements",
elements,
undefined,
expectUnchangedElements,
args.expect.validInput,
);
}
function prepareArguments(
elementsLike: { id: string; index?: string }[],
movedElementsIds?: string[],
): [ExcalidrawElement[], ElementsMap | undefined] {
const elements = elementsLike.map((x) =>
API.createElement({ id: x.id, index: x.index as FractionalIndex }),
);
const movedMap = arrayToMap(movedElementsIds || []);
const movedElements = movedElementsIds
? arrayToMap(elements.filter((x) => movedMap.has(x.id)))
: undefined;
return [elements, movedElements];
}
function test(
name: string,
elements: ExcalidrawElement[],
movedElements: ElementsMap | undefined,
expectUnchangedElements: Map<string, { id: string }>,
expectValidInput?: boolean,
) {
it(name, () => {
// ensure the input is invalid (unless the flag is on)
if (!expectValidInput) {
expect(() =>
validateFractionalIndices(elements, {
shouldThrow: true,
includeBoundTextValidation: true,
ignoreLogs: true,
}),
).toThrowError(InvalidFractionalIndexError);
}
// clone due to mutation
const clonedElements = elements.map((x) => deepCopyElement(x));
// act
const syncedElements = movedElements
? syncMovedIndices(clonedElements, movedElements)
: syncInvalidIndices(clonedElements);
expect(syncedElements.length).toBe(elements.length);
expect(() =>
validateFractionalIndices(syncedElements, {
shouldThrow: true,
includeBoundTextValidation: true,
ignoreLogs: true,
}),
).not.toThrowError(InvalidFractionalIndexError);
syncedElements.forEach((synced, index) => {
const element = elements[index];
// ensure the order hasn't changed
expect(synced.id).toBe(element.id);
if (expectUnchangedElements.has(synced.id)) {
// ensure we didn't mutate where we didn't want to mutate
expect(synced.index).toBe(elements[index].index);
expect(synced.version).toBe(elements[index].version);
} else {
expect(synced.index).not.toBe(elements[index].index);
// ensure we mutated just once, even with fallback triggered
expect(synced.version).toBe(elements[index].version + 1);
}
});
});
}
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import {
convertToExcalidrawElements,
Excalidraw,
} from "@excalidraw/excalidraw";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { Keyboard, Pointer } from "@excalidraw/excalidraw/tests/helpers/ui";
import {
getCloneByOrigId,
render,
} from "@excalidraw/excalidraw/tests/test-utils";
import type { ExcalidrawElement } from "../src/types";
const { h } = window;
const mouse = new Pointer("mouse");
describe("adding elements to frames", () => {
type ElementType = string;
const assertOrder = (
els: readonly { type: ElementType }[],
order: ElementType[],
) => {
expect(els.map((el) => el.type)).toEqual(order);
};
const reorderElements = <T extends { type: ElementType }>(
els: readonly T[],
order: ElementType[],
) => {
return order.reduce((acc: T[], el) => {
acc.push(els.find((e) => e.type === el)!);
return acc;
}, []);
};
function resizeFrameOverElement(
frame: ExcalidrawElement,
element: ExcalidrawElement,
) {
mouse.clickAt(0, 0);
mouse.downAt(frame.x + frame.width, frame.y + frame.height);
mouse.moveTo(
element.x + element.width + 50,
element.y + element.height + 50,
);
mouse.up();
}
function dragElementIntoFrame(
frame: ExcalidrawElement,
element: ExcalidrawElement,
) {
mouse.clickAt(element.x, element.y);
mouse.downAt(element.x + element.width / 2, element.y + element.height / 2);
mouse.moveTo(frame.x + frame.width / 2, frame.y + frame.height / 2);
mouse.up();
}
function selectElementAndDuplicate(
element: ExcalidrawElement,
moveTo: [number, number] = [element.x + 25, element.y + 25],
) {
const [x, y] = [
element.x + element.width / 2,
element.y + element.height / 2,
];
Keyboard.withModifierKeys({ alt: true }, () => {
mouse.downAt(x, y);
mouse.moveTo(moveTo[0], moveTo[1]);
mouse.up();
});
}
function expectEqualIds(expected: ExcalidrawElement[]) {
expect(h.elements.map((x) => x.id)).toEqual(expected.map((x) => x.id));
}
let frame: ExcalidrawElement;
let rect1: ExcalidrawElement;
let rect2: ExcalidrawElement;
let rect3: ExcalidrawElement;
let rect4: ExcalidrawElement;
let text: ExcalidrawElement;
let arrow: ExcalidrawElement;
beforeEach(async () => {
await render(<Excalidraw />);
frame = API.createElement({ id: "id0", type: "frame", x: 0, width: 150 });
rect1 = API.createElement({
id: "id1",
type: "rectangle",
x: -1000,
});
rect2 = API.createElement({
id: "id2",
type: "rectangle",
x: 200,
width: 50,
});
rect3 = API.createElement({
id: "id3",
type: "rectangle",
x: 400,
width: 50,
});
rect4 = API.createElement({
id: "id4",
type: "rectangle",
x: 1000,
width: 50,
});
text = API.createElement({
id: "id5",
type: "text",
x: 100,
});
arrow = API.createElement({
id: "id6",
type: "arrow",
x: 100,
boundElements: [{ id: text.id, type: "text" }],
});
});
const commonTestCases = async (
func: typeof resizeFrameOverElement | typeof dragElementIntoFrame,
) => {
describe.skip("when frame is in a layer below", async () => {
it("should add an element", async () => {
API.setElements([frame, rect2]);
func(frame, rect2);
expect(h.elements[0].frameId).toBe(frame.id);
expectEqualIds([rect2, frame]);
});
it("should add elements", async () => {
API.setElements([frame, rect2, rect3]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect2, rect3, frame]);
});
it("should add elements when there are other other elements in between", async () => {
API.setElements([frame, rect1, rect2, rect4, rect3]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect2, rect3, frame, rect1, rect4]);
});
it("should add elements when there are other elements in between and the order is reversed", async () => {
API.setElements([frame, rect3, rect4, rect2, rect1]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect2, rect3, frame, rect4, rect1]);
});
});
describe.skip("when frame is in a layer above", async () => {
it("should add an element", async () => {
API.setElements([rect2, frame]);
func(frame, rect2);
expect(h.elements[0].frameId).toBe(frame.id);
expectEqualIds([rect2, frame]);
});
it("should add elements", async () => {
API.setElements([rect2, rect3, frame]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect3, rect2, frame]);
});
it("should add elements when there are other other elements in between", async () => {
API.setElements([rect1, rect2, rect4, rect3, frame]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect1, rect4, rect3, rect2, frame]);
});
it("should add elements when there are other elements in between and the order is reversed", async () => {
API.setElements([rect3, rect4, rect2, rect1, frame]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect4, rect1, rect3, rect2, frame]);
});
});
describe("when frame is in an inner layer", async () => {
it.skip("should add elements", async () => {
API.setElements([rect2, frame, rect3]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect2, rect3, frame]);
});
it.skip("should add elements when there are other other elements in between", async () => {
API.setElements([rect2, rect1, frame, rect4, rect3]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect1, rect2, rect3, frame, rect4]);
});
it.skip("should add elements when there are other elements in between and the order is reversed", async () => {
API.setElements([rect3, rect4, frame, rect2, rect1]);
func(frame, rect2);
func(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect4, rect3, rect2, frame, rect1]);
});
});
};
const resizingTest = async (
containerType: "arrow" | "rectangle",
initialOrder: ElementType[],
expectedOrder: ElementType[],
) => {
await render(<Excalidraw />);
const frame = API.createElement({ type: "frame", x: 0, y: 0 });
API.setElements(
reorderElements(
[
frame,
...convertToExcalidrawElements([
{
type: containerType,
x: 100,
y: 100,
height: 10,
label: { text: "xx" },
},
]),
],
initialOrder,
),
);
assertOrder(h.elements, initialOrder);
expect(h.elements[1].frameId).toBe(null);
expect(h.elements[2].frameId).toBe(null);
const container = h.elements[1];
resizeFrameOverElement(frame, container);
assertOrder(h.elements, expectedOrder);
expect(h.elements[0].frameId).toBe(frame.id);
expect(h.elements[1].frameId).toBe(frame.id);
};
describe("resizing frame over elements", async () => {
await commonTestCases(resizeFrameOverElement);
it.skip("resizing over text containers and labelled arrows", async () => {
await resizingTest(
"rectangle",
["frame", "rectangle", "text"],
["rectangle", "text", "frame"],
);
await resizingTest(
"rectangle",
["frame", "text", "rectangle"],
["rectangle", "text", "frame"],
);
await resizingTest(
"rectangle",
["rectangle", "text", "frame"],
["rectangle", "text", "frame"],
);
await resizingTest(
"rectangle",
["text", "rectangle", "frame"],
["rectangle", "text", "frame"],
);
await resizingTest(
"arrow",
["frame", "arrow", "text"],
["arrow", "text", "frame"],
);
await resizingTest(
"arrow",
["text", "arrow", "frame"],
["arrow", "text", "frame"],
);
await resizingTest(
"arrow",
["frame", "arrow", "text"],
["arrow", "text", "frame"],
);
// FIXME failing in tests (it fails to add elements to frame for some
// reason) but works in browser. (╯°□°)╯︵ ┻━┻
//
// Looks like the `getElementsCompletelyInFrame()` doesn't work
// in these cases.
//
// await testElements(
// "arrow",
// ["arrow", "text", "frame"],
// ["arrow", "text", "frame"],
// );
});
it.skip("should add arrow bound with text when frame is in a layer below", async () => {
API.setElements([frame, arrow, text]);
resizeFrameOverElement(frame, arrow);
expect(arrow.frameId).toBe(frame.id);
expect(text.frameId).toBe(frame.id);
expectEqualIds([arrow, text, frame]);
});
it("should add arrow bound with text when frame is in a layer above", async () => {
API.setElements([arrow, text, frame]);
resizeFrameOverElement(frame, arrow);
expect(arrow.frameId).toBe(frame.id);
expect(text.frameId).toBe(frame.id);
expectEqualIds([arrow, text, frame]);
});
it.skip("should add arrow bound with text when frame is in an inner layer", async () => {
API.setElements([arrow, frame, text]);
resizeFrameOverElement(frame, arrow);
expect(arrow.frameId).toBe(frame.id);
expect(text.frameId).toBe(frame.id);
expectEqualIds([arrow, text, frame]);
});
});
describe("resizing frame over elements but downwards", async () => {
it.skip("should add elements when frame is in a layer below", async () => {
API.setElements([frame, rect1, rect2, rect3, rect4]);
resizeFrameOverElement(frame, rect4);
resizeFrameOverElement(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect2, rect3, frame, rect4, rect1]);
});
it.skip("should add elements when frame is in a layer above", async () => {
API.setElements([rect1, rect2, rect3, rect4, frame]);
resizeFrameOverElement(frame, rect4);
resizeFrameOverElement(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect1, rect2, rect3, frame, rect4]);
});
it.skip("should add elements when frame is in an inner layer", async () => {
API.setElements([rect1, rect2, frame, rect3, rect4]);
resizeFrameOverElement(frame, rect4);
resizeFrameOverElement(frame, rect3);
expect(rect2.frameId).toBe(frame.id);
expect(rect3.frameId).toBe(frame.id);
expectEqualIds([rect1, rect2, rect3, frame, rect4]);
});
});
describe("dragging elements into the frame", async () => {
await commonTestCases(dragElementIntoFrame);
it.skip("should drag element inside, duplicate it and keep it in frame", () => {
API.setElements([frame, rect2]);
dragElementIntoFrame(frame, rect2);
selectElementAndDuplicate(rect2);
const rect2_copy = getCloneByOrigId(rect2.id);
expect(rect2_copy.frameId).toBe(frame.id);
expect(rect2.frameId).toBe(frame.id);
expectEqualIds([rect2_copy, rect2, frame]);
});
it.skip("should drag element inside, duplicate it and remove it from frame", () => {
API.setElements([frame, rect2]);
dragElementIntoFrame(frame, rect2);
// move the rect2 outside the frame
selectElementAndDuplicate(rect2, [-1000, -1000]);
const rect2_copy = getCloneByOrigId(rect2.id);
expect(rect2_copy.frameId).toBe(frame.id);
expect(rect2.frameId).toBe(null);
expectEqualIds([rect2_copy, frame, rect2]);
});
it("random order 01", () => {
const frame1 = API.createElement({
type: "frame",
x: 0,
y: 0,
width: 100,
height: 100,
});
const frame2 = API.createElement({
type: "frame",
x: 200,
y: 0,
width: 100,
height: 100,
});
const frame3 = API.createElement({
type: "frame",
x: 300,
y: 0,
width: 100,
height: 100,
});
const rectangle1 = API.createElement({
type: "rectangle",
x: 25,
y: 25,
width: 50,
height: 50,
frameId: frame1.id,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 225,
y: 25,
width: 50,
height: 50,
frameId: frame2.id,
});
const rectangle3 = API.createElement({
type: "rectangle",
x: 325,
y: 25,
width: 50,
height: 50,
frameId: frame3.id,
});
const rectangle4 = API.createElement({
type: "rectangle",
x: 350,
y: 25,
width: 50,
height: 50,
frameId: frame3.id,
});
API.setElements([
frame1,
rectangle4,
rectangle1,
rectangle3,
frame3,
rectangle2,
frame2,
]);
API.setSelectedElements([rectangle2]);
const origSize = h.elements.length;
expect(h.elements.length).toBe(origSize);
dragElementIntoFrame(frame3, rectangle2);
expect(h.elements.length).toBe(origSize);
});
it("random order 02", () => {
const frame1 = API.createElement({
type: "frame",
x: 0,
y: 0,
width: 100,
height: 100,
});
const frame2 = API.createElement({
type: "frame",
x: 200,
y: 0,
width: 100,
height: 100,
});
const rectangle1 = API.createElement({
type: "rectangle",
x: 25,
y: 25,
width: 50,
height: 50,
frameId: frame1.id,
});
const rectangle2 = API.createElement({
type: "rectangle",
x: 225,
y: 25,
width: 50,
height: 50,
frameId: frame2.id,
});
API.setElements([rectangle1, rectangle2, frame1, frame2]);
API.setSelectedElements([rectangle2]);
expect(h.elements.length).toBe(4);
dragElementIntoFrame(frame2, rectangle1);
expect(h.elements.length).toBe(4);
});
});
});
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import { makeNextSelectedElementIds } from "../src/selection";
describe("makeNextSelectedElementIds", () => {
const _makeNextSelectedElementIds = (
selectedElementIds: { [id: string]: true },
prevSelectedElementIds: { [id: string]: true },
expectUpdated: boolean,
) => {
const ret = makeNextSelectedElementIds(selectedElementIds, {
selectedElementIds: prevSelectedElementIds,
});
expect(ret === selectedElementIds).toBe(expectUpdated);
};
it("should return prevState selectedElementIds if no change", () => {
_makeNextSelectedElementIds({}, {}, false);
_makeNextSelectedElementIds({ 1: true }, { 1: true }, false);
_makeNextSelectedElementIds(
{ 1: true, 2: true },
{ 1: true, 2: true },
false,
);
});
it("should return new selectedElementIds if changed", () => {
// _makeNextSelectedElementIds({ 1: true }, { 1: false }, true);
_makeNextSelectedElementIds({ 1: true }, {}, true);
_makeNextSelectedElementIds({}, { 1: true }, true);
_makeNextSelectedElementIds({ 1: true }, { 2: true }, true);
_makeNextSelectedElementIds({ 1: true }, { 1: true, 2: true }, true);
_makeNextSelectedElementIds(
{ 1: true, 2: true },
{ 1: true, 3: true },
true,
);
});
});
@@ -0,0 +1,58 @@
import { vi } from "vitest";
import { getPerfectElementSize } from "../src/sizeHelpers";
const EPSILON_DIGITS = 3;
// Needed so that we can mock the value of constants which is done in
// below tests. In Jest this wasn't needed as global override was possible
// but vite doesn't allow that hence we need to mock
vi.mock(
"@excalidraw/common",
//@ts-ignore
async (importOriginal) => {
const module: any = await importOriginal();
return { ...module };
},
);
describe("getPerfectElementSize", () => {
it("should return height:0 if `elementType` is line and locked angle is 0", () => {
const { height, width } = getPerfectElementSize("line", 149, 10);
expect(width).toBeCloseTo(149, EPSILON_DIGITS);
expect(height).toBeCloseTo(0, EPSILON_DIGITS);
});
it("should return width:0 if `elementType` is line and locked angle is 90 deg (Math.PI/2)", () => {
const { height, width } = getPerfectElementSize("line", 10, 140);
expect(width).toBeCloseTo(0, EPSILON_DIGITS);
expect(height).toBeCloseTo(140, EPSILON_DIGITS);
});
it("should return height:0 if `elementType` is arrow and locked angle is 0", () => {
const { height, width } = getPerfectElementSize("arrow", 200, 20);
expect(width).toBeCloseTo(200, EPSILON_DIGITS);
expect(height).toBeCloseTo(0, EPSILON_DIGITS);
});
it("should return width:0 if `elementType` is arrow and locked angle is 90 deg (Math.PI/2)", () => {
const { height, width } = getPerfectElementSize("arrow", 10, 100);
expect(width).toBeCloseTo(0, EPSILON_DIGITS);
expect(height).toBeCloseTo(100, EPSILON_DIGITS);
});
it("should return adjust height to be width * tan(locked angle)", () => {
const { height, width } = getPerfectElementSize("arrow", 120, 185);
expect(width).toBeCloseTo(120, EPSILON_DIGITS);
expect(height).toBeCloseTo(207.846, EPSILON_DIGITS);
});
it("should return height equals to width if locked angle is 45 deg", () => {
const { height, width } = getPerfectElementSize("arrow", 135, 145);
expect(width).toBeCloseTo(135, EPSILON_DIGITS);
expect(height).toBeCloseTo(135, EPSILON_DIGITS);
});
it("should return height:0 and width:0 when width and height are 0", () => {
const { height, width } = getPerfectElementSize("arrow", 0, 0);
expect(width).toBeCloseTo(0, EPSILON_DIGITS);
expect(height).toBeCloseTo(0, EPSILON_DIGITS);
});
});
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import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { mutateElement } from "@excalidraw/element";
import { normalizeElementOrder } from "../src/sortElements";
import type { ExcalidrawElement } from "../src/types";
const { h } = window;
const assertOrder = (
elements: readonly ExcalidrawElement[],
expectedOrder: string[],
) => {
const actualOrder = elements.map((element) => element.id);
expect(actualOrder).toEqual(expectedOrder);
};
describe("normalizeElementsOrder", () => {
it("sort bound-text elements", () => {
const container = API.createElement({
id: "container",
type: "rectangle",
});
const boundText = API.createElement({
id: "boundText",
type: "text",
containerId: container.id,
});
const otherElement = API.createElement({
id: "otherElement",
type: "rectangle",
boundElements: [],
});
const otherElement2 = API.createElement({
id: "otherElement2",
type: "rectangle",
boundElements: [],
});
mutateElement(container, new Map(), {
boundElements: [{ type: "text", id: boundText.id }],
});
assertOrder(normalizeElementOrder([container, boundText]), [
"container",
"boundText",
]);
assertOrder(normalizeElementOrder([boundText, container]), [
"container",
"boundText",
]);
assertOrder(
normalizeElementOrder([
boundText,
container,
otherElement,
otherElement2,
]),
["container", "boundText", "otherElement", "otherElement2"],
);
assertOrder(normalizeElementOrder([container, otherElement, boundText]), [
"container",
"boundText",
"otherElement",
]);
assertOrder(
normalizeElementOrder([
container,
otherElement,
otherElement2,
boundText,
]),
["container", "boundText", "otherElement", "otherElement2"],
);
assertOrder(
normalizeElementOrder([
boundText,
otherElement,
container,
otherElement2,
]),
["otherElement", "container", "boundText", "otherElement2"],
);
// noop
assertOrder(
normalizeElementOrder([
otherElement,
container,
boundText,
otherElement2,
]),
["otherElement", "container", "boundText", "otherElement2"],
);
// text has existing containerId, but container doesn't list is
// as a boundElement
assertOrder(
normalizeElementOrder([
API.createElement({
id: "boundText",
type: "text",
containerId: "container",
}),
API.createElement({
id: "container",
type: "rectangle",
}),
]),
["boundText", "container"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "boundText",
type: "text",
containerId: "container",
}),
]),
["boundText"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "container",
type: "rectangle",
boundElements: [],
}),
]),
["container"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "container",
type: "rectangle",
boundElements: [{ id: "x", type: "text" }],
}),
]),
["container"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "arrow",
type: "arrow",
}),
API.createElement({
id: "container",
type: "rectangle",
boundElements: [{ id: "arrow", type: "arrow" }],
}),
]),
["arrow", "container"],
);
});
it("normalize group order", () => {
assertOrder(
normalizeElementOrder([
API.createElement({
id: "A_rect1",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "rect2",
type: "rectangle",
}),
API.createElement({
id: "rect3",
type: "rectangle",
}),
API.createElement({
id: "A_rect4",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "A_rect5",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "rect6",
type: "rectangle",
}),
API.createElement({
id: "A_rect7",
type: "rectangle",
groupIds: ["A"],
}),
]),
["A_rect1", "A_rect4", "A_rect5", "A_rect7", "rect2", "rect3", "rect6"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "A_rect1",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "rect2",
type: "rectangle",
}),
API.createElement({
id: "B_rect3",
type: "rectangle",
groupIds: ["B"],
}),
API.createElement({
id: "A_rect4",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "B_rect5",
type: "rectangle",
groupIds: ["B"],
}),
API.createElement({
id: "rect6",
type: "rectangle",
}),
API.createElement({
id: "A_rect7",
type: "rectangle",
groupIds: ["A"],
}),
]),
["A_rect1", "A_rect4", "A_rect7", "rect2", "B_rect3", "B_rect5", "rect6"],
);
// nested groups
assertOrder(
normalizeElementOrder([
API.createElement({
id: "A_rect1",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "BA_rect2",
type: "rectangle",
groupIds: ["B", "A"],
}),
]),
["A_rect1", "BA_rect2"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "BA_rect1",
type: "rectangle",
groupIds: ["B", "A"],
}),
API.createElement({
id: "A_rect2",
type: "rectangle",
groupIds: ["A"],
}),
]),
["BA_rect1", "A_rect2"],
);
assertOrder(
normalizeElementOrder([
API.createElement({
id: "BA_rect1",
type: "rectangle",
groupIds: ["B", "A"],
}),
API.createElement({
id: "A_rect2",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "CBA_rect3",
type: "rectangle",
groupIds: ["C", "B", "A"],
}),
API.createElement({
id: "rect4",
type: "rectangle",
}),
API.createElement({
id: "A_rect5",
type: "rectangle",
groupIds: ["A"],
}),
API.createElement({
id: "BA_rect5",
type: "rectangle",
groupIds: ["B", "A"],
}),
API.createElement({
id: "BA_rect6",
type: "rectangle",
groupIds: ["B", "A"],
}),
API.createElement({
id: "CBA_rect7",
type: "rectangle",
groupIds: ["C", "B", "A"],
}),
API.createElement({
id: "X_rect8",
type: "rectangle",
groupIds: ["X"],
}),
API.createElement({
id: "rect9",
type: "rectangle",
}),
API.createElement({
id: "YX_rect10",
type: "rectangle",
groupIds: ["Y", "X"],
}),
API.createElement({
id: "X_rect11",
type: "rectangle",
groupIds: ["X"],
}),
]),
[
"BA_rect1",
"BA_rect5",
"BA_rect6",
"A_rect2",
"A_rect5",
"CBA_rect3",
"CBA_rect7",
"rect4",
"X_rect8",
"X_rect11",
"YX_rect10",
"rect9",
],
);
});
// TODO
it.skip("normalize boundElements array", () => {
const container = API.createElement({
id: "container",
type: "rectangle",
boundElements: [],
});
const boundText = API.createElement({
id: "boundText",
type: "text",
containerId: container.id,
});
h.app.scene.mutateElement(container, {
boundElements: [
{ type: "text", id: boundText.id },
{ type: "text", id: "xxx" },
],
});
expect(normalizeElementOrder([container, boundText])).toEqual([
expect.objectContaining({
id: container.id,
}),
expect.objectContaining({ id: boundText.id }),
]);
});
// should take around <100ms for 10K iterations (@dwelle's PC 22-05-25)
it.skip("normalizeElementsOrder() perf", () => {
const makeElements = (iterations: number) => {
const elements: ExcalidrawElement[] = [];
while (iterations--) {
const container = API.createElement({
type: "rectangle",
boundElements: [],
groupIds: ["B", "A"],
});
const boundText = API.createElement({
type: "text",
containerId: container.id,
groupIds: ["A"],
});
const otherElement = API.createElement({
type: "rectangle",
boundElements: [],
groupIds: ["C", "A"],
});
h.app.scene.mutateElement(container, {
boundElements: [{ type: "text", id: boundText.id }],
});
elements.push(boundText, otherElement, container);
}
return elements;
};
const elements = makeElements(10000);
const t0 = Date.now();
normalizeElementOrder(elements);
console.info(`${Date.now() - t0}ms`);
});
});
+379
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import { getLineHeight } from "@excalidraw/common";
import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { FONT_FAMILY, TEXT_ALIGN, VERTICAL_ALIGN } from "@excalidraw/common";
import {
computeContainerDimensionForBoundText,
getContainerCoords,
getBoundTextMaxWidth,
getBoundTextMaxHeight,
computeBoundTextPosition,
} from "../src/textElement";
import { detectLineHeight, getLineHeightInPx } from "../src/textMeasurements";
import type { ExcalidrawTextElementWithContainer } from "../src/types";
describe("Test measureText", () => {
describe("Test getContainerCoords", () => {
const params = { width: 200, height: 100, x: 10, y: 20 };
it("should compute coords correctly when ellipse", () => {
const element = API.createElement({
type: "ellipse",
...params,
});
expect(getContainerCoords(element)).toEqual({
x: 44.2893218813452455,
y: 39.64466094067262,
});
});
it("should compute coords correctly when rectangle", () => {
const element = API.createElement({
type: "rectangle",
...params,
});
expect(getContainerCoords(element)).toEqual({
x: 15,
y: 25,
});
});
it("should compute coords correctly when diamond", () => {
const element = API.createElement({
type: "diamond",
...params,
});
expect(getContainerCoords(element)).toEqual({
x: 65,
y: 50,
});
});
});
describe("Test computeContainerDimensionForBoundText", () => {
const params = {
width: 178,
height: 194,
};
it("should compute container height correctly for rectangle", () => {
const element = API.createElement({
type: "rectangle",
...params,
});
expect(computeContainerDimensionForBoundText(150, element.type)).toEqual(
160,
);
});
it("should compute container height correctly for ellipse", () => {
const element = API.createElement({
type: "ellipse",
...params,
});
expect(computeContainerDimensionForBoundText(150, element.type)).toEqual(
226,
);
});
it("should compute container height correctly for diamond", () => {
const element = API.createElement({
type: "diamond",
...params,
});
expect(computeContainerDimensionForBoundText(150, element.type)).toEqual(
320,
);
});
});
describe("Test getBoundTextMaxWidth", () => {
const params = {
width: 178,
height: 194,
};
it("should return max width when container is rectangle", () => {
const container = API.createElement({ type: "rectangle", ...params });
expect(getBoundTextMaxWidth(container, null)).toBe(168);
});
it("should return max width when container is ellipse", () => {
const container = API.createElement({ type: "ellipse", ...params });
expect(getBoundTextMaxWidth(container, null)).toBe(116);
});
it("should return max width when container is diamond", () => {
const container = API.createElement({ type: "diamond", ...params });
expect(getBoundTextMaxWidth(container, null)).toBe(79);
});
});
describe("Test getBoundTextMaxHeight", () => {
const params = {
width: 178,
height: 194,
id: '"container-id',
};
const boundTextElement = API.createElement({
type: "text",
id: "text-id",
x: 560.51171875,
y: 202.033203125,
width: 154,
height: 175,
fontSize: 20,
fontFamily: 1,
text: "Excalidraw is a\nvirtual \nopensource \nwhiteboard for \nsketching \nhand-drawn like\ndiagrams",
textAlign: "center",
verticalAlign: "middle",
containerId: params.id,
}) as ExcalidrawTextElementWithContainer;
it("should return max height when container is rectangle", () => {
const container = API.createElement({ type: "rectangle", ...params });
expect(getBoundTextMaxHeight(container, boundTextElement)).toBe(184);
});
it("should return max height when container is ellipse", () => {
const container = API.createElement({ type: "ellipse", ...params });
expect(getBoundTextMaxHeight(container, boundTextElement)).toBe(127);
});
it("should return max height when container is diamond", () => {
const container = API.createElement({ type: "diamond", ...params });
expect(getBoundTextMaxHeight(container, boundTextElement)).toBe(87);
});
it("should return max height when container is arrow", () => {
const container = API.createElement({
type: "arrow",
...params,
});
expect(getBoundTextMaxHeight(container, boundTextElement)).toBe(194);
});
it("should return max height when container is arrow and height is less than threshold", () => {
const container = API.createElement({
type: "arrow",
...params,
height: 70,
boundElements: [{ type: "text", id: "text-id" }],
});
expect(getBoundTextMaxHeight(container, boundTextElement)).toBe(
boundTextElement.height,
);
});
});
});
const textElement = API.createElement({
type: "text",
text: "Excalidraw is a\nvirtual \nopensource \nwhiteboard for \nsketching \nhand-drawn like\ndiagrams",
fontSize: 20,
fontFamily: 1,
height: 175,
});
describe("Test detectLineHeight", () => {
it("should return correct line height", () => {
expect(detectLineHeight(textElement)).toBe(1.25);
});
});
describe("Test getLineHeightInPx", () => {
it("should return correct line height", () => {
expect(
getLineHeightInPx(textElement.fontSize, textElement.lineHeight),
).toBe(25);
});
});
describe("Test getDefaultLineHeight", () => {
it("should return line height using default font family when not passed", () => {
//@ts-ignore
expect(getLineHeight()).toBe(1.25);
});
it("should return line height using default font family for unknown font", () => {
const UNKNOWN_FONT = 5;
expect(getLineHeight(UNKNOWN_FONT)).toBe(1.25);
});
it("should return correct line height", () => {
expect(getLineHeight(FONT_FAMILY.Cascadia)).toBe(1.2);
});
});
describe("Test computeBoundTextPosition", () => {
const createMockElementsMap = () => new Map();
// Helper function to create rectangle test case with 90-degree rotation
const createRotatedRectangleTestCase = (
textAlign: string,
verticalAlign: string,
) => {
const container = API.createElement({
type: "rectangle",
x: 100,
y: 100,
width: 200,
height: 100,
angle: (Math.PI / 2) as any, // 90 degrees
});
const boundTextElement = API.createElement({
type: "text",
width: 80,
height: 40,
text: "hello darkness my old friend",
textAlign: textAlign as any,
verticalAlign: verticalAlign as any,
containerId: container.id,
}) as ExcalidrawTextElementWithContainer;
const elementsMap = createMockElementsMap();
return { container, boundTextElement, elementsMap };
};
describe("90-degree rotation with all alignment combinations", () => {
// Test all 9 combinations of horizontal (left, center, right) and vertical (top, middle, bottom) alignment
it("should position text with LEFT + TOP alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.LEFT, VERTICAL_ALIGN.TOP);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(185, 1);
expect(result.y).toBeCloseTo(75, 1);
});
it("should position text with LEFT + MIDDLE alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.LEFT, VERTICAL_ALIGN.MIDDLE);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(160, 1);
expect(result.y).toBeCloseTo(75, 1);
});
it("should position text with LEFT + BOTTOM alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.LEFT, VERTICAL_ALIGN.BOTTOM);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(135, 1);
expect(result.y).toBeCloseTo(75, 1);
});
it("should position text with CENTER + TOP alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.CENTER, VERTICAL_ALIGN.TOP);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(185, 1);
expect(result.y).toBeCloseTo(130, 1);
});
it("should position text with CENTER + MIDDLE alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(
TEXT_ALIGN.CENTER,
VERTICAL_ALIGN.MIDDLE,
);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(160, 1);
expect(result.y).toBeCloseTo(130, 1);
});
it("should position text with CENTER + BOTTOM alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(
TEXT_ALIGN.CENTER,
VERTICAL_ALIGN.BOTTOM,
);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(135, 1);
expect(result.y).toBeCloseTo(130, 1);
});
it("should position text with RIGHT + TOP alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.RIGHT, VERTICAL_ALIGN.TOP);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(185, 1);
expect(result.y).toBeCloseTo(185, 1);
});
it("should position text with RIGHT + MIDDLE alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.RIGHT, VERTICAL_ALIGN.MIDDLE);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(160, 1);
expect(result.y).toBeCloseTo(185, 1);
});
it("should position text with RIGHT + BOTTOM alignment at 90-degree rotation", () => {
const { container, boundTextElement, elementsMap } =
createRotatedRectangleTestCase(TEXT_ALIGN.RIGHT, VERTICAL_ALIGN.BOTTOM);
const result = computeBoundTextPosition(
container,
boundTextElement,
elementsMap,
);
expect(result.x).toBeCloseTo(135, 1);
expect(result.y).toBeCloseTo(185, 1);
});
});
});
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import { wrapText, parseTokens } from "../src/textWrapping";
import type { FontString } from "../src/types";
describe("Test wrapText", () => {
// font is irrelevant as jsdom does not support FontFace API
// `measureText` width is mocked to return `text.length` by `jest-canvas-mock`
// https://github.com/hustcc/jest-canvas-mock/blob/master/src/classes/TextMetrics.js
const font = "10px Cascadia, Segoe UI Emoji" as FontString;
it("should wrap the text correctly when word length is exactly equal to max width", () => {
const text = "Hello Excalidraw";
// Length of "Excalidraw" is 100 and exacty equal to max width
const res = wrapText(text, font, 100);
expect(res).toEqual(`Hello\nExcalidraw`);
});
it("should return the text as is if max width is invalid", () => {
const text = "Hello Excalidraw";
expect(wrapText(text, font, NaN)).toEqual(text);
expect(wrapText(text, font, -1)).toEqual(text);
expect(wrapText(text, font, Infinity)).toEqual(text);
});
it("should show the text correctly when max width reached", () => {
const text = "Hello😀";
const maxWidth = 10;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("H\ne\nl\nl\no\n😀");
});
it("should not wrap number when wrapping line", () => {
const text = "don't wrap this number 99,100.99";
const maxWidth = 300;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("don't wrap this number\n99,100.99");
});
it("should trim all trailing whitespaces", () => {
const text = "Hello ";
const maxWidth = 50;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hello");
});
it("should trim all but one trailing whitespaces", () => {
const text = "Hello ";
const maxWidth = 60;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hello ");
});
it("should keep preceding whitespaces and trim all trailing whitespaces", () => {
const text = " Hello World";
const maxWidth = 90;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(" Hello\nWorld");
});
it("should keep some preceding whitespaces, trim trailing whitespaces, but kep those that fit in the trailing line", () => {
const text = " Hello World ";
const maxWidth = 90;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(" Hello\nWorld ");
});
it("should trim keep those whitespace that fit in the trailing line", () => {
const text = "Hello Wo rl d ";
const maxWidth = 100;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hello Wo\nrl d ");
});
it("should support multiple (multi-codepoint) emojis", () => {
const text = "😀🗺🔥👩🏽‍🦰👨‍👩‍👧‍👦🇨🇿";
const maxWidth = 1;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("😀\n🗺\n🔥\n👩🏽‍🦰\n👨‍👩‍👧‍👦\n🇨🇿");
});
it("should wrap the text correctly when text contains hyphen", () => {
let text =
"Wikipedia is hosted by Wikimedia- Foundation, a non-profit organization that also hosts a range-of other projects";
const res = wrapText(text, font, 110);
expect(res).toBe(
`Wikipedia\nis hosted\nby\nWikimedia-\nFoundation,\na non-\nprofit\norganizatio\nn that also\nhosts a\nrange-of\nother\nprojects`,
);
text = "Hello thereusing-now";
expect(wrapText(text, font, 100)).toEqual("Hello\nthereusing\n-now");
});
it("should support wrapping nested lists", () => {
const text = `\tA) one tab\t\t- two tabs - 8 spaces`;
const maxWidth = 100;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(`\tA) one\ntab\t\t- two\ntabs\n- 8 spaces`);
const maxWidth2 = 50;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe(`\tA)\none\ntab\n- two\ntabs\n- 8\nspace\ns`);
});
describe("When text is CJK", () => {
it("should break each CJK character when width is very small", () => {
// "안녕하세요" (Hangul) + "こんにちは世界" (Hiragana, Kanji) + "コンニチハ" (Katakana) + "你好" (Han) = "Hello Hello World Hello Hi"
const text = "안녕하세요こんにちは世界コンニチハ你好";
const maxWidth = 10;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(
"안\n녕\n하\n세\n요\nこ\nん\nに\nち\nは\n世\n界\nコ\nン\nニ\nチ\nハ\n你\n好",
);
});
it("should break CJK text into longer segments when width is larger", () => {
// "안녕하세요" (Hangul) + "こんにちは世界" (Hiragana, Kanji) + "コンニチハ" (Katakana) + "你好" (Han) = "Hello Hello World Hello Hi"
const text = "안녕하세요こんにちは世界コンニチハ你好";
const maxWidth = 30;
const res = wrapText(text, font, maxWidth);
// measureText is mocked, so it's not precisely what would happen in prod
expect(res).toBe("안녕하\n세요こ\nんにち\nは世界\nコンニ\nチハ你\n好");
});
it("should handle a combination of CJK, latin, emojis and whitespaces", () => {
const text = `a醫 醫 bb 你好 world-i-😀🗺🔥`;
const maxWidth = 150;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(`a醫 醫 bb 你\n好 world-i-😀🗺\n🔥`);
const maxWidth2 = 50;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe(`a醫 醫\nbb 你\n好\nworld\n-i-😀\n🗺🔥`);
const maxWidth3 = 30;
const res3 = wrapText(text, font, maxWidth3);
expect(res3).toBe(`a醫\n醫\nbb\n你好\nwor\nld-\ni-\n😀\n🗺\n🔥`);
});
it("should break before and after a regular CJK character", () => {
const text = "HelloたWorld";
const maxWidth1 = 50;
const res1 = wrapText(text, font, maxWidth1);
expect(res1).toBe("Hello\nた\nWorld");
const maxWidth2 = 60;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe("Helloた\nWorld");
});
it("should break before and after certain CJK symbols", () => {
const text = "こんにちは〃世界";
const maxWidth1 = 50;
const res1 = wrapText(text, font, maxWidth1);
expect(res1).toBe("こんにちは\n〃世界");
const maxWidth2 = 60;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe("こんにちは〃\n世界");
});
it("should break after, not before for certain CJK pairs", () => {
const text = "Hello た。";
const maxWidth = 70;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hello\nた。");
});
it("should break before, not after for certain CJK pairs", () => {
const text = "Hello「たWorld」";
const maxWidth = 60;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hello\n「た\nWorld」");
});
it("should break after, not before for certain CJK character pairs", () => {
const text = "「Helloた」World";
const maxWidth = 70;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("「Hello\nた」World");
});
it("should break Chinese sentences", () => {
const text = `中国你好!这是一个测试。
我们来看看:人民币¥1234「很贵」
(括号)、逗号,句号。空格 换行 全角符号…—`;
const maxWidth1 = 80;
const res1 = wrapText(text, font, maxWidth1);
expect(res1).toBe(`中国你好!这是一\n个测试。
我们来看看:人民\n币¥1234「很\n贵」
(括号)、逗号,\n句号。空格 换行\n全角符号…—`);
const maxWidth2 = 50;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe(`中国你好!\n这是一个测\n试。
我们来看\n看:人民币\n¥1234\n「很贵」
(括号)、\n逗号,句\n号。空格\n换行 全角\n符号…—`);
});
it("should break Japanese sentences", () => {
const text = `日本こんにちは!これはテストです。
見てみましょう:円¥1234「高い」
(括弧)、読点、句点。
空白 改行 全角記号…ー`;
const maxWidth1 = 80;
const res1 = wrapText(text, font, maxWidth1);
expect(res1).toBe(`日本こんにちは!\nこれはテストで\nす。
見てみましょ\nう:円¥1234\n「高い」
(括弧)、読\n点、句点。
空白 改行\n全角記号…ー`);
const maxWidth2 = 50;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe(`日本こんに\nちは!これ\nはテストで\nす。
見てみ\nましょう:\n円\n¥1234\n「高い」
(括\n弧)、読\n点、句点。
空白\n改行 全角\n記号…ー`);
});
it("should break Korean sentences", () => {
const text = `한국 안녕하세요! 이것은 테스트입니다.
우리 보자: 원화₩1234「비싸다」
(괄호), 쉼표, 마침표.
공백 줄바꿈 전각기호…—`;
const maxWidth1 = 80;
const res1 = wrapText(text, font, maxWidth1);
expect(res1).toBe(`한국 안녕하세\n요! 이것은 테\n스트입니다.
우리 보자: 원\n화₩1234「비\n싸다」
(괄호), 쉼\n표, 마침표.
공백 줄바꿈 전\n각기호…—`);
const maxWidth2 = 60;
const res2 = wrapText(text, font, maxWidth2);
expect(res2).toBe(`한국 안녕하\n세요! 이것\n은 테스트입\n니다.
우리 보자:\n원화\n₩1234\n「비싸다」
(괄호),\n쉼표, 마침\n표.
공백 줄바꿈\n전각기호…—`);
});
});
describe("When text contains leading whitespaces", () => {
const text = " \t Hello world";
it("should preserve leading whitespaces", () => {
const maxWidth = 120;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(" \t Hello\nworld");
});
it("should break and collapse leading whitespaces when line breaks", () => {
const maxWidth = 60;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("\nHello\nworld");
});
it("should break and collapse leading whitespaces whe words break", () => {
const maxWidth = 30;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("\nHel\nlo\nwor\nld");
});
});
describe("When text contains trailing whitespaces", () => {
it("shouldn't add new lines for trailing spaces", () => {
const text = "Hello whats up ";
const maxWidth = 190;
const res = wrapText(text, font, maxWidth);
expect(res).toBe(text);
});
it("should ignore trailing whitespaces when line breaks", () => {
const text = "Hippopotomonstrosesquippedaliophobia ??????";
const maxWidth = 400;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hippopotomonstrosesquippedaliophobia\n??????");
});
it("should not ignore trailing whitespaces when word breaks", () => {
const text = "Hippopotomonstrosesquippedaliophobia ??????";
const maxWidth = 300;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hippopotomonstrosesquippedalio\nphobia ??????");
});
it("should ignore trailing whitespaces when word breaks and line breaks", () => {
const text = "Hippopotomonstrosesquippedaliophobia ??????";
const maxWidth = 180;
const res = wrapText(text, font, maxWidth);
expect(res).toBe("Hippopotomonstrose\nsquippedaliophobia\n??????");
});
});
describe("When text doesn't contain new lines", () => {
const text = "Hello whats up";
[
{
desc: "break all words when width of each word is less than container width",
width: 70,
res: `Hello\nwhats\nup`,
},
{
desc: "break all characters when width of each character is less than container width",
width: 15,
res: `H\ne\nl\nl\no\nw\nh\na\nt\ns\nu\np`,
},
{
desc: "break words as per the width",
width: 130,
res: `Hello whats\nup`,
},
{
desc: "fit the container",
width: 240,
res: "Hello whats up",
},
{
desc: "push the word if its equal to max width",
width: 50,
res: `Hello\nwhats\nup`,
},
].forEach((data) => {
it(`should ${data.desc}`, () => {
const res = wrapText(text, font, data.width);
expect(res).toEqual(data.res);
});
});
});
describe("When text contain new lines", () => {
const text = `Hello\n whats up`;
[
{
desc: "break all words when width of each word is less than container width",
width: 70,
res: `Hello\n whats\nup`,
},
{
desc: "break all characters when width of each character is less than container width",
width: 15,
res: `H\ne\nl\nl\no\n\nw\nh\na\nt\ns\nu\np`,
},
{
desc: "break words as per the width",
width: 140,
res: `Hello\n whats up`,
},
].forEach((data) => {
it(`should respect new lines and ${data.desc}`, () => {
const res = wrapText(text, font, data.width);
expect(res).toEqual(data.res);
});
});
});
describe("When text is long", () => {
const text = `hellolongtextthisiswhatsupwithyouIamtypingggggandtypinggg break it now`;
[
{
desc: "fit characters of long string as per container width",
width: 160,
res: `hellolongtextthi\nsiswhatsupwithyo\nuIamtypingggggan\ndtypinggg break\nit now`,
},
{
desc: "fit characters of long string as per container width and break words as per the width",
width: 120,
res: `hellolongtex\ntthisiswhats\nupwithyouIam\ntypingggggan\ndtypinggg\nbreak it now`,
},
{
desc: "fit the long text when container width is greater than text length and move the rest to next line",
width: 590,
res: `hellolongtextthisiswhatsupwithyouIamtypingggggandtypinggg\nbreak it now`,
},
].forEach((data) => {
it(`should ${data.desc}`, () => {
const res = wrapText(text, font, data.width);
expect(res).toEqual(data.res);
});
});
});
describe("Test parseTokens", () => {
it("should tokenize latin", () => {
let text = "Excalidraw is a virtual collaborative whiteboard";
expect(parseTokens(text)).toEqual([
"Excalidraw",
" ",
"is",
" ",
"a",
" ",
"virtual",
" ",
"collaborative",
" ",
"whiteboard",
]);
text =
"Wikipedia is hosted by Wikimedia- Foundation, a non-profit organization that also hosts a range-of other projects";
expect(parseTokens(text)).toEqual([
"Wikipedia",
" ",
"is",
" ",
"hosted",
" ",
"by",
" ",
"Wikimedia-",
" ",
"Foundation,",
" ",
"a",
" ",
"non-",
"profit",
" ",
"organization",
" ",
"that",
" ",
"also",
" ",
"hosts",
" ",
"a",
" ",
"range-",
"of",
" ",
"other",
" ",
"projects",
]);
});
it("should not tokenize number", () => {
const text = "99,100.99";
const tokens = parseTokens(text);
expect(tokens).toEqual(["99,100.99"]);
});
it("should tokenize joined emojis", () => {
const text = `😬🌍🗺🔥☂️👩🏽‍🦰👨‍👩‍👧‍👦👩🏾‍🔬🏳️‍🌈🧔‍♀️🧑‍🤝‍🧑🙅🏽‍♂️✅0️⃣🇨🇿🦅`;
const tokens = parseTokens(text);
expect(tokens).toEqual([
"😬",
"🌍",
"🗺",
"🔥",
"☂️",
"👩🏽‍🦰",
"👨‍👩‍👧‍👦",
"👩🏾‍🔬",
"🏳️‍🌈",
"🧔‍♀️",
"🧑‍🤝‍🧑",
"🙅🏽‍♂️",
"✅",
"0️⃣",
"🇨🇿",
"🦅",
]);
});
it("should tokenize emojis mixed with mixed text", () => {
const text = `😬a🌍b🗺c🔥d☂️《👩🏽‍🦰》👨‍👩‍👧‍👦德👩🏾‍🔬こ🏳️‍🌈안🧔‍♀️g🧑‍🤝‍🧑h🙅🏽‍♂️e✅f0️⃣g🇨🇿10🦅#hash`;
const tokens = parseTokens(text);
expect(tokens).toEqual([
"😬",
"a",
"🌍",
"b",
"🗺",
"c",
"🔥",
"d",
"☂️",
"《",
"👩🏽‍🦰",
"》",
"👨‍👩‍👧‍👦",
"德",
"👩🏾‍🔬",
"こ",
"🏳️‍🌈",
"안",
"🧔‍♀️",
"g",
"🧑‍🤝‍🧑",
"h",
"🙅🏽‍♂️",
"e",
"✅",
"f0️⃣g", // bummer, but ok, as we traded kecaps not breaking (less common) for hash and numbers not breaking (more common)
"🇨🇿",
"10", // nice! do not break the number, as it's by default matched by \p{Emoji}
"🦅",
"#hash", // nice! do not break the hash, as it's by default matched by \p{Emoji}
]);
});
it("should tokenize decomposed chars into their composed variants", () => {
// each input character is in a decomposed form
const text = "čでäぴέ다й한";
expect(text.normalize("NFC").length).toEqual(8);
expect(text).toEqual(text.normalize("NFD"));
const tokens = parseTokens(text);
expect(tokens.length).toEqual(8);
expect(tokens).toEqual(["č", "で", "ä", "ぴ", "έ", "다", "й", "한"]);
});
it("should tokenize artificial CJK", () => {
const text = `《道德經》醫-醫こんにちは世界!안녕하세요세계;요』,다.다...원/달(((다)))[[1]]〚({((한))>)〛(「た」)た…[Hello] \t World?ニューヨーク・¥3700.55す。090-1234-5678¥1,000〜$5,000「素晴らしい!」〔重要〕#1:Taro君30%は、(たなばた)〰¥110±¥570で20℃〜9:30〜10:00【一番】`;
// [
// '《道', '德', '經》', '醫-',
// '醫', 'こ', 'ん', 'に',
// 'ち', 'は', '世', '界!',
// '안', '녕', '하', '세',
// '요', '세', '계;', '요』,',
// '다.', '다...', '원/', '달',
// '(((다)))', '[[1]]', '〚({((한))>)〛', '(「た」)',
// 'た…', '[Hello]', ' ', '\t',
// ' ', 'World', 'ニ', 'ュ',
// 'ー', 'ヨ', 'ー', 'ク・',
// '¥3700.55', 'す。', '090-', '1234-',
// '5678', '¥1,000〜', '5,000', '「素',
// '晴', 'ら', 'し', 'い!」',
// '〔重', '要〕', '', '1:',
// 'Taro', '君', '30', 'は、',
// '(た', 'な', 'ば', 'た)',
// '〰', '¥110±', '¥570', 'で',
// '20℃〜', '9:30〜', '10:00', '【一',
// '番】'
// ]
const tokens = parseTokens(text);
// Latin
expect(tokens).toContain("[[1]]");
expect(tokens).toContain("[Hello]");
expect(tokens).toContain("World");
expect(tokens).toContain("Taro");
// Chinese
expect(tokens).toContain("《道");
expect(tokens).toContain("德");
expect(tokens).toContain("經》");
expect(tokens).toContain("醫-");
expect(tokens).toContain("醫");
// Japanese
expect(tokens).toContain("こ");
expect(tokens).toContain("ん");
expect(tokens).toContain("に");
expect(tokens).toContain("ち");
expect(tokens).toContain("は");
expect(tokens).toContain("世");
expect(tokens).toContain("ク・");
expect(tokens).toContain("界!");
expect(tokens).toContain("た…");
expect(tokens).toContain("す。");
expect(tokens).toContain("ュ");
expect(tokens).toContain("「素");
expect(tokens).toContain("晴");
expect(tokens).toContain("ら");
expect(tokens).toContain("し");
expect(tokens).toContain("い!」");
expect(tokens).toContain("君");
expect(tokens).toContain("は、");
expect(tokens).toContain("(た");
expect(tokens).toContain("な");
expect(tokens).toContain("ば");
expect(tokens).toContain("た)");
expect(tokens).toContain("で");
expect(tokens).toContain("【一");
expect(tokens).toContain("番】");
// Check for Korean
expect(tokens).toContain("안");
expect(tokens).toContain("녕");
expect(tokens).toContain("하");
expect(tokens).toContain("세");
expect(tokens).toContain("요");
expect(tokens).toContain("세");
expect(tokens).toContain("계;");
expect(tokens).toContain("요』,");
expect(tokens).toContain("다.");
expect(tokens).toContain("다...");
expect(tokens).toContain("원/");
expect(tokens).toContain("달");
expect(tokens).toContain("(((다)))");
expect(tokens).toContain("〚({((한))>)〛");
expect(tokens).toContain("(「た」)");
// Numbers and units
expect(tokens).toContain("¥3700.55");
expect(tokens).toContain("090-");
expect(tokens).toContain("1234-");
expect(tokens).toContain("5678");
expect(tokens).toContain("¥1,000〜");
expect(tokens).toContain("5,000");
expect(tokens).toContain("1:");
expect(tokens).toContain("30");
expect(tokens).toContain("¥110±");
expect(tokens).toContain("20℃〜");
expect(tokens).toContain("9:30〜");
expect(tokens).toContain("10:00");
// Punctuation and symbols
expect(tokens).toContain(" ");
expect(tokens).toContain("\t");
expect(tokens).toContain(" ");
expect(tokens).toContain("ニ");
expect(tokens).toContain("ー");
expect(tokens).toContain("ヨ");
expect(tokens).toContain("〰");
expect(tokens).toContain("");
});
});
});
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import { API } from "@excalidraw/excalidraw/tests/helpers/api";
import { hasBoundTextElement } from "../src/typeChecks";
describe("Test TypeChecks", () => {
describe("Test hasBoundTextElement", () => {
it("should return true for text bindable containers with bound text", () => {
expect(
hasBoundTextElement(
API.createElement({
type: "rectangle",
boundElements: [{ type: "text", id: "text-id" }],
}),
),
).toBeTruthy();
expect(
hasBoundTextElement(
API.createElement({
type: "ellipse",
boundElements: [{ type: "text", id: "text-id" }],
}),
),
).toBeTruthy();
expect(
hasBoundTextElement(
API.createElement({
type: "arrow",
boundElements: [{ type: "text", id: "text-id" }],
}),
),
).toBeTruthy();
});
it("should return false for text bindable containers without bound text", () => {
expect(
hasBoundTextElement(
API.createElement({
type: "freedraw",
boundElements: [{ type: "arrow", id: "arrow-id" }],
}),
),
).toBeFalsy();
});
it("should return false for non text bindable containers", () => {
expect(
hasBoundTextElement(
API.createElement({
type: "freedraw",
boundElements: [{ type: "text", id: "text-id" }],
}),
),
).toBeFalsy();
});
expect(
hasBoundTextElement(
API.createElement({
type: "image",
boundElements: [{ type: "text", id: "text-id" }],
}),
),
).toBeFalsy();
});
});
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{
"extends": "../tsconfig.base.json",
"compilerOptions": {
"outDir": "./dist/types"
},
"include": ["src/**/*", "global.d.ts"],
"exclude": ["**/*.test.*", "tests", "types", "examples", "dist"]
}
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{
"overrides": [
{
"files": ["src/**/*.{ts,tsx}"],
"rules": {
"@typescript-eslint/no-restricted-imports": [
"error",
{
"patterns": [
{
"group": ["../../excalidraw", "../../../packages/excalidraw", "@excalidraw/excalidraw"],
"message": "Do not import from '@excalidraw/excalidraw' package anything but types, as this package must be independent.",
"allowTypeImports": true
}
]
}
]
}
}
]
}
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@@ -0,0 +1,2 @@
node_modules
types
+16
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@@ -0,0 +1,16 @@
[
{
"path": "dist/excalidraw.production.min.js",
"limit": "340 kB"
},
{
"path": "dist/excalidraw-assets/locales",
"name": "dist/excalidraw-assets/locales",
"limit": "290 kB"
},
{
"path": "dist/excalidraw-assets/vendor-*.js",
"name": "dist/excalidraw-assets/vendor*.js",
"limit": "900 kB"
}
]
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# Excalidraw
**Excalidraw** is exported as a component to be directly embedded in your project.
## Installation
Use `npm` or `yarn` to install the package.
```bash
npm install react react-dom @excalidraw/excalidraw
# or
yarn add react react-dom @excalidraw/excalidraw
```
> **Note**: If you don't want to wait for the next stable release and try out the unreleased changes, use `@excalidraw/excalidraw@next`.
#### Self-hosting fonts
By default, Excalidraw will try to download all the used fonts from the [CDN](https://esm.run/@excalidraw/excalidraw/dist/prod).
For self-hosting purposes, you'll have to copy the content of the folder `node_modules/@excalidraw/excalidraw/dist/prod/fonts` to the path where your assets should be served from (i.e. `public/` directory in your project). In that case, you should also set `window.EXCALIDRAW_ASSET_PATH` to the very same path, i.e. `/` in case it's in the root:
```js
<script>window.EXCALIDRAW_ASSET_PATH = "/";</script>
```
### Dimensions of Excalidraw
Excalidraw takes _100%_ of `width` and `height` of the containing block so make sure the container in which you render Excalidraw has non zero dimensions.
## Demo
Go to [CodeSandbox](https://codesandbox.io/p/sandbox/github/excalidraw/excalidraw/tree/master/examples/with-script-in-browser) example.
## Integration
Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/integration).
## API
Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/api).
## Contributing
Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/contributing).
@@ -0,0 +1,65 @@
import { LIBRARY_DISABLED_TYPES, randomId } from "@excalidraw/common";
import { deepCopyElement } from "@excalidraw/element";
import { CaptureUpdateAction } from "@excalidraw/element";
import { t } from "../i18n";
import { register } from "./register";
export const actionAddToLibrary = register({
name: "addToLibrary",
trackEvent: { category: "element" },
perform: (elements, appState, _, app) => {
const selectedElements = app.scene.getSelectedElements({
selectedElementIds: appState.selectedElementIds,
includeBoundTextElement: true,
includeElementsInFrames: true,
});
for (const type of LIBRARY_DISABLED_TYPES) {
if (selectedElements.some((element) => element.type === type)) {
return {
captureUpdate: CaptureUpdateAction.EVENTUALLY,
appState: {
...appState,
errorMessage: t(`errors.libraryElementTypeError.${type}`),
},
};
}
}
return app.library
.getLatestLibrary()
.then((items) => {
return app.library.setLibrary([
{
id: randomId(),
status: "unpublished",
elements: selectedElements.map(deepCopyElement),
created: Date.now(),
},
...items,
]);
})
.then(() => {
return {
captureUpdate: CaptureUpdateAction.EVENTUALLY,
appState: {
...appState,
toast: { message: t("toast.addedToLibrary") },
},
};
})
.catch((error) => {
return {
captureUpdate: CaptureUpdateAction.EVENTUALLY,
appState: {
...appState,
errorMessage: error.message,
},
};
});
},
label: "labels.addToLibrary",
});

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