feat: Attempt simple chaining of ovoids

Signed-off-by: Mark Tolmacs <mark@lazycat.hu>

.github/workflows/autorelease-excalidraw.yml

@@ -12,10 +12,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 2
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Set up publish access
         run: |
           npm config set //registry.npmjs.org/:_authToken ${NPM_TOKEN}

.github/workflows/lint.yml

@@ -9,10 +9,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Install and lint
         run: |

.github/workflows/locales-coverage.yml

@@ -14,10 +14,10 @@ jobs:
         with:
           token: ${{ secrets.PUSH_TRANSLATIONS_COVERAGE_PAT }}
 
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Create report file
         run: |

.github/workflows/sentry-production.yml

@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Install and build
         run: |
           yarn --frozen-lockfile

.github/workflows/size-limit.yml

@@ -11,10 +11,10 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Install in packages/excalidraw
         run: yarn
         working-directory: packages/excalidraw

README.md

@@ -23,23 +23,17 @@
 <br />
 <p align="center">
   <a href="https://github.com/excalidraw/excalidraw/blob/master/LICENSE">
-    <img alt="Excalidraw is released under the MIT license." src="https://img.shields.io/badge/license-MIT-blue.svg"  />
-  </a>
+    <img alt="Excalidraw is released under the MIT license." src="https://img.shields.io/badge/license-MIT-blue.svg"  /></a>
   <a href="https://www.npmjs.com/package/@excalidraw/excalidraw">
-    <img alt="npm downloads/month" src="https://img.shields.io/npm/dm/@excalidraw/excalidraw"  />
-  </a>
+    <img alt="npm downloads/month" src="https://img.shields.io/npm/dm/@excalidraw/excalidraw"  /></a>
   <a href="https://docs.excalidraw.com/docs/introduction/contributing">
-    <img alt="PRs welcome!" src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat"  />
-  </a>
+    <img alt="PRs welcome!" src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat"  /></a>
   <a href="https://discord.gg/UexuTaE">
-    <img alt="Chat on Discord" src="https://img.shields.io/discord/723672430744174682?color=738ad6&label=Chat%20on%20Discord&logo=discord&logoColor=ffffff&widge=false"/>
-  </a>
+    <img alt="Chat on Discord" src="https://img.shields.io/discord/723672430744174682?color=738ad6&label=Chat%20on%20Discord&logo=discord&logoColor=ffffff&widge=false"/></a>
   <a href="https://deepwiki.com/excalidraw/excalidraw">
-    <img alt="Ask DeepWiki" src="https://deepwiki.com/badge.svg" />
-  </a>
+    <img alt="Ask DeepWiki" src="https://deepwiki.com/badge.svg" /></a>
   <a href="https://twitter.com/excalidraw">
-    <img alt="Follow Excalidraw on Twitter" src="https://img.shields.io/twitter/follow/excalidraw.svg?label=follow+@excalidraw&style=social&logo=twitter"/>
-  </a>
+    <img alt="Follow Excalidraw on Twitter" src="https://img.shields.io/twitter/follow/excalidraw.svg?label=follow+@excalidraw&style=social&logo=twitter"/></a>
 </p>
 
 <div align="center">

excalidraw-app/App.tsx

@@ -48,7 +48,11 @@ import {
   youtubeIcon,
 } from "@excalidraw/excalidraw/components/icons";
 import { isElementLink } from "@excalidraw/element";
-import { restore, restoreAppState } from "@excalidraw/excalidraw/data/restore";
+import {
+  bumpElementVersions,
+  restoreAppState,
+  restoreElements,
+} from "@excalidraw/excalidraw/data/restore";
 import { newElementWith } from "@excalidraw/element";
 import { isInitializedImageElement } from "@excalidraw/element";
 import clsx from "clsx";
@@ -105,8 +109,8 @@ import { TopErrorBoundary } from "./components/TopErrorBoundary";
 import {
   exportToBackend,
   getCollaborationLinkData,
+  importFromBackend,
   isCollaborationLink,
-  loadScene,
 } from "./data";
 
 import { updateStaleImageStatuses } from "./data/FileManager";
@@ -224,9 +228,20 @@ const initializeScene = async (opts: {
 
   const localDataState = importFromLocalStorage();
 
-  let scene: RestoredDataState & {
+  let scene: Omit<
+    RestoredDataState,
+    // we're not storing files in the scene database/localStorage, and instead
+    // fetch them async from a different store
+    "files"
+  > & {
     scrollToContent?: boolean;
-  } = await loadScene(null, null, localDataState);
+  } = {
+    elements: restoreElements(localDataState?.elements, null, {
+      repairBindings: true,
+      deleteInvisibleElements: true,
+    }),
+    appState: restoreAppState(localDataState?.appState, null),
+  };
 
   let roomLinkData = getCollaborationLinkData(window.location.href);
   const isExternalScene = !!(id || jsonBackendMatch || roomLinkData);
@@ -240,11 +255,26 @@ const initializeScene = async (opts: {
       (await openConfirmModal(shareableLinkConfirmDialog))
     ) {
       if (jsonBackendMatch) {
-        scene = await loadScene(
+        const imported = await importFromBackend(
           jsonBackendMatch[1],
           jsonBackendMatch[2],
-          localDataState,
         );
+
+        scene = {
+          elements: bumpElementVersions(
+            restoreElements(imported.elements, null, {
+              repairBindings: true,
+              deleteInvisibleElements: true,
+            }),
+            localDataState?.elements,
+          ),
+          appState: restoreAppState(
+            imported.appState,
+            // local appState when importing from backend to ensure we restore
+            // localStorage user settings which we do not persist on server.
+            localDataState?.appState,
+          ),
+        };
       }
       scene.scrollToContent = true;
       if (!roomLinkData) {
@@ -496,8 +526,10 @@ const ExcalidrawWrapper = () => {
           loadImages(data);
           if (data.scene) {
             excalidrawAPI.updateScene({
-              ...data.scene,
-              ...restore(data.scene, null, null, { repairBindings: true }),
+              elements: restoreElements(data.scene.elements, null, {
+                repairBindings: true,
+              }),
+              appState: restoreAppState(data.scene.appState, null),
               captureUpdate: CaptureUpdateAction.IMMEDIATELY,
             });
           }

excalidraw-app/collab/Collab.tsx

@@ -6,7 +6,7 @@ import {
   reconcileElements,
 } from "@excalidraw/excalidraw";
 import { ErrorDialog } from "@excalidraw/excalidraw/components/ErrorDialog";
-import { APP_NAME, EVENT } from "@excalidraw/common";
+import { APP_NAME, cloneJSON, EVENT, toBrandedType } from "@excalidraw/common";
 import {
   IDLE_THRESHOLD,
   ACTIVE_THRESHOLD,
@@ -29,6 +29,8 @@ import { withBatchedUpdates } from "@excalidraw/excalidraw/reactUtils";
 import throttle from "lodash.throttle";
 import { PureComponent } from "react";
 
+import { bumpElementVersions } from "@excalidraw/excalidraw/data/restore";
+
 import type {
   ReconciledExcalidrawElement,
   RemoteExcalidrawElement,
@@ -311,6 +313,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   saveCollabRoomToFirebase = async (
     syncableElements: readonly SyncableExcalidrawElement[],
   ) => {
+    syncableElements = cloneJSON(syncableElements);
     try {
       const storedElements = await saveToFirebase(
         this.portal,
@@ -441,7 +444,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   };
 
   private decryptPayload = async (
-    iv: Uint8Array,
+    iv: Uint8Array<ArrayBuffer>,
     encryptedData: ArrayBuffer,
     decryptionKey: string,
   ): Promise<ValueOf<SocketUpdateDataSource>> => {
@@ -562,7 +565,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     // All socket listeners are moving to Portal
     this.portal.socket.on(
       "client-broadcast",
-      async (encryptedData: ArrayBuffer, iv: Uint8Array) => {
+      async (encryptedData: ArrayBuffer, iv: Uint8Array<ArrayBuffer>) => {
         if (!this.portal.roomKey) {
           return;
         }
@@ -579,7 +582,9 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           case WS_SUBTYPES.INIT: {
             if (!this.portal.socketInitialized) {
               this.initializeRoom({ fetchScene: false });
-              const remoteElements = decryptedData.payload.elements;
+              const remoteElements = toBrandedType<
+                readonly RemoteExcalidrawElement[]
+              >(decryptedData.payload.elements);
               const reconciledElements =
                 this._reconcileElements(remoteElements);
               this.handleRemoteSceneUpdate(reconciledElements);
@@ -593,7 +598,11 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           }
           case WS_SUBTYPES.UPDATE:
             this.handleRemoteSceneUpdate(
-              this._reconcileElements(decryptedData.payload.elements),
+              this._reconcileElements(
+                toBrandedType<readonly RemoteExcalidrawElement[]>(
+                  decryptedData.payload.elements,
+                ),
+              ),
             );
             break;
           case WS_SUBTYPES.MOUSE_LOCATION: {
@@ -742,17 +751,28 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   };
 
   private _reconcileElements = (
-    remoteElements: readonly ExcalidrawElement[],
+    remoteElements: readonly RemoteExcalidrawElement[],
   ): ReconciledExcalidrawElement[] => {
-    const localElements = this.getSceneElementsIncludingDeleted();
     const appState = this.excalidrawAPI.getAppState();
-    const restoredRemoteElements = restoreElements(remoteElements, null);
-    const reconciledElements = reconcileElements(
-      localElements,
-      restoredRemoteElements as RemoteExcalidrawElement[],
+
+    const existingElements = this.getSceneElementsIncludingDeleted();
+
+    // NOTE ideally we restore _after_ reconciliation but we can't do that
+    // as we'd regenerate even elements such as appState.newElement which would
+    // break the state
+    remoteElements = restoreElements(remoteElements, existingElements);
+
+    let reconciledElements = reconcileElements(
+      existingElements,
+      remoteElements,
       appState,
     );
 
+    reconciledElements = bumpElementVersions(
+      reconciledElements,
+      existingElements,
+    );
+
     // Avoid broadcasting to the rest of the collaborators the scene
     // we just received!
     // Note: this needs to be set before updating the scene as it

excalidraw-app/components/DebugCanvas.tsx

@@ -15,7 +15,6 @@ import {
   getGlobalFixedPointForBindableElement,
   isArrowElement,
   isBindableElement,
-  isFixedPointBinding,
 } from "@excalidraw/element";
 
 import {
@@ -35,7 +34,6 @@ import type {
   ExcalidrawBindableElement,
   FixedPointBinding,
   OrderedExcalidrawElement,
-  PointBinding,
 } from "@excalidraw/element/types";
 
 import { STORAGE_KEYS } from "../app_constants";
@@ -77,6 +75,39 @@ const renderCubicBezier = (
   context.restore();
 };
 
+const isPolygon = (data: any): data is GlobalPoint[] => {
+  return (
+    Array.isArray(data) &&
+    data.every((point) => Array.isArray(point) && point.length === 2)
+  );
+};
+
+const renderPolygon = (
+  context: CanvasRenderingContext2D,
+  zoom: number,
+  points: GlobalPoint[],
+  color: string,
+) => {
+  if (points.length < 3) {
+    return;
+  }
+
+  context.save();
+  context.fillStyle = color;
+  context.globalAlpha = 0.3;
+  context.beginPath();
+  context.moveTo(points[0][0] * zoom, points[0][1] * zoom);
+  for (let i = 1; i < points.length; i++) {
+    context.lineTo(points[i][0] * zoom, points[i][1] * zoom);
+  }
+  context.closePath();
+  context.fill();
+  context.globalAlpha = 1.0;
+  context.strokeStyle = color;
+  context.stroke();
+  context.restore();
+};
+
 const renderOrigin = (context: CanvasRenderingContext2D, zoom: number) => {
   context.strokeStyle = "#888";
   context.save();
@@ -91,48 +122,46 @@ const renderOrigin = (context: CanvasRenderingContext2D, zoom: number) => {
 
 const _renderBinding = (
   context: CanvasRenderingContext2D,
-  binding: FixedPointBinding | PointBinding,
+  binding: FixedPointBinding,
   elementsMap: ElementsMap,
   zoom: number,
   width: number,
   height: number,
   color: string,
 ) => {
-  if (isFixedPointBinding(binding)) {
-    if (!binding.fixedPoint) {
-      console.warn("Binding must have a fixedPoint");
-      return;
-    }
-
-    const bindable = elementsMap.get(
-      binding.elementId,
-    ) as ExcalidrawBindableElement;
-    const [x, y] = getGlobalFixedPointForBindableElement(
-      binding.fixedPoint,
-      bindable,
-      elementsMap,
-    );
-
-    context.save();
-    context.strokeStyle = color;
-    context.lineWidth = 1;
-    context.beginPath();
-    context.moveTo(x * zoom, y * zoom);
-    context.bezierCurveTo(
-      x * zoom - width,
-      y * zoom - height,
-      x * zoom - width,
-      y * zoom + height,
-      x * zoom,
-      y * zoom,
-    );
-    context.stroke();
-    context.restore();
+  if (!binding.fixedPoint) {
+    console.warn("Binding must have a fixedPoint");
+    return;
   }
+
+  const bindable = elementsMap.get(
+    binding.elementId,
+  ) as ExcalidrawBindableElement;
+  const [x, y] = getGlobalFixedPointForBindableElement(
+    binding.fixedPoint,
+    bindable,
+    elementsMap,
+  );
+
+  context.save();
+  context.strokeStyle = color;
+  context.lineWidth = 1;
+  context.beginPath();
+  context.moveTo(x * zoom, y * zoom);
+  context.bezierCurveTo(
+    x * zoom - width,
+    y * zoom - height,
+    x * zoom - width,
+    y * zoom + height,
+    x * zoom,
+    y * zoom,
+  );
+  context.stroke();
+  context.restore();
 };
 
 const _renderBindableBinding = (
-  binding: FixedPointBinding | PointBinding,
+  binding: FixedPointBinding,
   context: CanvasRenderingContext2D,
   elementsMap: ElementsMap,
   zoom: number,
@@ -140,37 +169,35 @@ const _renderBindableBinding = (
   height: number,
   color: string,
 ) => {
-  if (isFixedPointBinding(binding)) {
-    const bindable = elementsMap.get(
-      binding.elementId,
-    ) as ExcalidrawBindableElement;
-    if (!binding.fixedPoint) {
-      console.warn("Binding must have a fixedPoint");
-      return;
-    }
-
-    const [x, y] = getGlobalFixedPointForBindableElement(
-      binding.fixedPoint,
-      bindable,
-      elementsMap,
-    );
-
-    context.save();
-    context.strokeStyle = color;
-    context.lineWidth = 1;
-    context.beginPath();
-    context.moveTo(x * zoom, y * zoom);
-    context.bezierCurveTo(
-      x * zoom + width,
-      y * zoom + height,
-      x * zoom + width,
-      y * zoom - height,
-      x * zoom,
-      y * zoom,
-    );
-    context.stroke();
-    context.restore();
+  const bindable = elementsMap.get(
+    binding.elementId,
+  ) as ExcalidrawBindableElement;
+  if (!binding.fixedPoint) {
+    console.warn("Binding must have a fixedPoint");
+    return;
   }
+
+  const [x, y] = getGlobalFixedPointForBindableElement(
+    binding.fixedPoint,
+    bindable,
+    elementsMap,
+  );
+
+  context.save();
+  context.strokeStyle = color;
+  context.lineWidth = 1;
+  context.beginPath();
+  context.moveTo(x * zoom, y * zoom);
+  context.bezierCurveTo(
+    x * zoom + width,
+    y * zoom + height,
+    x * zoom + width,
+    y * zoom - height,
+    x * zoom,
+    y * zoom,
+  );
+  context.stroke();
+  context.restore();
 };
 
 const renderBindings = (
@@ -197,12 +224,12 @@ const renderBindings = (
 
         _renderBinding(
           context,
-          element.startBinding as FixedPointBinding,
+          element.startBinding,
           elementsMap,
           zoom,
           dim,
           dim,
-          "red",
+          element.startBinding?.mode === "orbit" ? "red" : "black",
         );
       }
 
@@ -221,7 +248,7 @@ const renderBindings = (
           zoom,
           dim,
           dim,
-          "red",
+          element.endBinding?.mode === "orbit" ? "red" : "black",
         );
       }
     }
@@ -286,6 +313,14 @@ const render = (
           el.color,
         );
         break;
+      case isPolygon(el.data):
+        renderPolygon(
+          context,
+          appState.zoom.value,
+          el.data as GlobalPoint[],
+          el.color,
+        );
+        break;
       default:
         throw new Error(`Unknown element type ${JSON.stringify(el)}`);
     }

excalidraw-app/data/LocalData.ts

@@ -16,7 +16,6 @@ import {
   DEFAULT_SIDEBAR,
   debounce,
 } from "@excalidraw/common";
-import { clearElementsForLocalStorage } from "@excalidraw/element";
 import {
   createStore,
   entries,
@@ -28,6 +27,7 @@ import {
 } from "idb-keyval";
 
 import { appJotaiStore, atom } from "excalidraw-app/app-jotai";
+import { getNonDeletedElements } from "@excalidraw/element";
 
 import type { LibraryPersistedData } from "@excalidraw/excalidraw/data/library";
 import type { ImportedDataState } from "@excalidraw/excalidraw/data/types";
@@ -88,7 +88,7 @@ const saveDataStateToLocalStorage = (
 
     localStorage.setItem(
       STORAGE_KEYS.LOCAL_STORAGE_ELEMENTS,
-      JSON.stringify(clearElementsForLocalStorage(elements)),
+      JSON.stringify(getNonDeletedElements(elements)),
     );
     localStorage.setItem(
       STORAGE_KEYS.LOCAL_STORAGE_APP_STATE,

excalidraw-app/data/firebase.ts

@@ -1,5 +1,5 @@
 import { reconcileElements } from "@excalidraw/excalidraw";
-import { MIME_TYPES } from "@excalidraw/common";
+import { MIME_TYPES, toBrandedType } from "@excalidraw/common";
 import { decompressData } from "@excalidraw/excalidraw/data/encode";
 import {
   encryptData,
@@ -105,8 +105,8 @@ const decryptElements = async (
   data: FirebaseStoredScene,
   roomKey: string,
 ): Promise<readonly ExcalidrawElement[]> => {
-  const ciphertext = data.ciphertext.toUint8Array();
-  const iv = data.iv.toUint8Array();
+  const ciphertext = data.ciphertext.toUint8Array() as Uint8Array<ArrayBuffer>;
+  const iv = data.iv.toUint8Array() as Uint8Array<ArrayBuffer>;
 
   const decrypted = await decryptData(iv, ciphertext, roomKey);
   const decodedData = new TextDecoder("utf-8").decode(
@@ -243,7 +243,7 @@ export const saveToFirebase = async (
 
   FirebaseSceneVersionCache.set(socket, storedElements);
 
-  return storedElements;
+  return toBrandedType<RemoteExcalidrawElement[]>(storedElements);
 };
 
 export const loadFromFirebase = async (

excalidraw-app/data/index.ts

@@ -8,7 +8,6 @@ import {
   IV_LENGTH_BYTES,
 } from "@excalidraw/excalidraw/data/encryption";
 import { serializeAsJSON } from "@excalidraw/excalidraw/data/json";
-import { restore } from "@excalidraw/excalidraw/data/restore";
 import { isInvisiblySmallElement } from "@excalidraw/element";
 import { isInitializedImageElement } from "@excalidraw/element";
 import { t } from "@excalidraw/excalidraw/i18n";
@@ -84,13 +83,13 @@ export type SocketUpdateDataSource = {
   SCENE_INIT: {
     type: WS_SUBTYPES.INIT;
     payload: {
-      elements: readonly ExcalidrawElement[];
+      elements: readonly OrderedExcalidrawElement[];
     };
   };
   SCENE_UPDATE: {
     type: WS_SUBTYPES.UPDATE;
     payload: {
-      elements: readonly ExcalidrawElement[];
+      elements: readonly OrderedExcalidrawElement[];
     };
   };
   MOUSE_LOCATION: {
@@ -200,7 +199,7 @@ const legacy_decodeFromBackend = async ({
   };
 };
 
-const importFromBackend = async (
+export const importFromBackend = async (
   id: string,
   decryptionKey: string,
 ): Promise<ImportedDataState> => {
@@ -242,45 +241,6 @@ const importFromBackend = async (
   }
 };
 
-export const loadScene = async (
-  id: string | null,
-  privateKey: string | null,
-  // Supply local state even if importing from backend to ensure we restore
-  // localStorage user settings which we do not persist on server.
-  // Non-optional so we don't forget to pass it even if `undefined`.
-  localDataState: ImportedDataState | undefined | null,
-) => {
-  let data;
-  if (id != null && privateKey != null) {
-    // the private key is used to decrypt the content from the server, take
-    // extra care not to leak it
-    data = restore(
-      await importFromBackend(id, privateKey),
-      localDataState?.appState,
-      localDataState?.elements,
-      {
-        repairBindings: true,
-        refreshDimensions: false,
-        deleteInvisibleElements: true,
-      },
-    );
-  } else {
-    data = restore(localDataState || null, null, null, {
-      repairBindings: true,
-      deleteInvisibleElements: true,
-    });
-  }
-
-  return {
-    elements: data.elements,
-    appState: data.appState,
-    // note: this will always be empty because we're not storing files
-    // in the scene database/localStorage, and instead fetch them async
-    // from a different database
-    files: data.files,
-  };
-};
-
 type ExportToBackendResult =
   | { url: null; errorMessage: string }
   | { url: string; errorMessage: null };

excalidraw-app/data/localStorage.ts

@@ -2,7 +2,6 @@ import {
   clearAppStateForLocalStorage,
   getDefaultAppState,
 } from "@excalidraw/excalidraw/appState";
-import { clearElementsForLocalStorage } from "@excalidraw/element";
 
 import type { ExcalidrawElement } from "@excalidraw/element/types";
 import type { AppState } from "@excalidraw/excalidraw/types";
@@ -50,7 +49,7 @@ export const importFromLocalStorage = () => {
   let elements: ExcalidrawElement[] = [];
   if (savedElements) {
     try {
-      elements = clearElementsForLocalStorage(JSON.parse(savedElements));
+      elements = JSON.parse(savedElements);
     } catch (error: any) {
       console.error(error);
       // Do nothing because elements array is already empty

excalidraw-app/debug.ts

@@ -24,34 +24,35 @@ export class Debug {
   private static LAST_DEBUG_LOG_CALL = 0;
   private static DEBUG_LOG_INTERVAL_ID: null | number = null;
 
+  private static LAST_FRAME_TIMESTAMP = 0;
+  private static FRAME_COUNT = 0;
+  private static ANIMATION_FRAME_ID: null | number = null;
+
+  private static scheduleAnimationFrame = () => {
+    if (Debug.DEBUG_LOG_INTERVAL_ID !== null) {
+      Debug.ANIMATION_FRAME_ID = requestAnimationFrame((timestamp) => {
+        if (Debug.LAST_FRAME_TIMESTAMP !== timestamp) {
+          Debug.LAST_FRAME_TIMESTAMP = timestamp;
+          Debug.FRAME_COUNT++;
+        }
+
+        if (Debug.DEBUG_LOG_INTERVAL_ID !== null) {
+          Debug.scheduleAnimationFrame();
+        }
+      });
+    }
+  };
+
   private static setupInterval = () => {
     if (Debug.DEBUG_LOG_INTERVAL_ID === null) {
       console.info("%c(starting perf recording)", "color: lime");
       Debug.DEBUG_LOG_INTERVAL_ID = window.setInterval(Debug.debugLogger, 1000);
+      Debug.scheduleAnimationFrame();
     }
     Debug.LAST_DEBUG_LOG_CALL = Date.now();
   };
 
   private static debugLogger = () => {
-    if (
-      Date.now() - Debug.LAST_DEBUG_LOG_CALL > 600 &&
-      Debug.DEBUG_LOG_INTERVAL_ID !== null
-    ) {
-      window.clearInterval(Debug.DEBUG_LOG_INTERVAL_ID);
-      Debug.DEBUG_LOG_INTERVAL_ID = null;
-      for (const [name, { avg }] of Object.entries(Debug.TIMES_AVG)) {
-        if (avg != null) {
-          console.info(
-            `%c${name} run avg: ${avg}ms (${getFps(avg)} fps)`,
-            "color: blue",
-          );
-        }
-      }
-      console.info("%c(stopping perf recording)", "color: red");
-      Debug.TIMES_AGGR = {};
-      Debug.TIMES_AVG = {};
-      return;
-    }
     if (Debug.DEBUG_LOG_TIMES) {
       for (const [name, { t, times }] of Object.entries(Debug.TIMES_AGGR)) {
         if (times.length) {
@@ -66,7 +67,15 @@ export class Debug {
       for (const [name, { t, times, avg }] of Object.entries(Debug.TIMES_AVG)) {
         if (times.length) {
           const avgFrameTime = getAvgFrameTime(times);
-          console.info(name, `${avgFrameTime}ms (${getFps(avgFrameTime)} fps)`);
+          console.info(
+            name,
+            `${times.length} runs: ${avgFrameTime}ms across ${
+              Debug.FRAME_COUNT
+            } frames (${getFps(avgFrameTime)} fps ~ ${lessPrecise(
+              (avgFrameTime / 16.67) * 100,
+              1,
+            )}% of frame budget)`,
+          );
           Debug.TIMES_AVG[name] = {
             t,
             times: [],
@@ -76,6 +85,24 @@ export class Debug {
         }
       }
     }
+    Debug.FRAME_COUNT = 0;
+
+    // Check for stop condition after logging
+    if (
+      Date.now() - Debug.LAST_DEBUG_LOG_CALL > 600 &&
+      Debug.DEBUG_LOG_INTERVAL_ID !== null
+    ) {
+      console.info("%c(stopping perf recording)", "color: red");
+      window.clearInterval(Debug.DEBUG_LOG_INTERVAL_ID);
+      window.cancelAnimationFrame(Debug.ANIMATION_FRAME_ID!);
+      Debug.ANIMATION_FRAME_ID = null;
+      Debug.FRAME_COUNT = 0;
+      Debug.LAST_FRAME_TIMESTAMP = 0;
+
+      Debug.DEBUG_LOG_INTERVAL_ID = null;
+      Debug.TIMES_AGGR = {};
+      Debug.TIMES_AVG = {};
+    }
   };
 
   public static logTime = (time?: number, name = "default") => {

excalidraw-app/package.json

@@ -36,6 +36,7 @@
     "react": "19.0.0",
     "react-dom": "19.0.0",
     "socket.io-client": "4.7.2",
+    "uqr": "0.1.2",
     "vite-plugin-html": "3.2.2"
   },
   "prettier": "@excalidraw/prettier-config",

excalidraw-app/sentry.ts

@@ -1,3 +1,4 @@
+import { getFeatureFlag } from "@excalidraw/common";
 import * as Sentry from "@sentry/browser";
 import callsites from "callsites";
 
@@ -33,6 +34,7 @@ Sentry.init({
     Sentry.captureConsoleIntegration({
       levels: ["error"],
     }),
+    Sentry.featureFlagsIntegration(),
   ],
   beforeSend(event) {
     if (event.request?.url) {
@@ -79,3 +81,14 @@ Sentry.init({
     return event;
   },
 });
+
+const flagsIntegration =
+  Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>(
+    "FeatureFlags",
+  );
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag(
+    "COMPLEX_BINDINGS",
+    getFeatureFlag("COMPLEX_BINDINGS"),
+  );
+}

excalidraw-app/share/QRCode.tsx

@@ -0,0 +1,56 @@
+import { useEffect, useState } from "react";
+import Spinner from "@excalidraw/excalidraw/components/Spinner";
+
+interface QRCodeProps {
+  value: string;
+}
+
+export const QRCode = ({ value }: QRCodeProps) => {
+  const [svgData, setSvgData] = useState<string | null>(null);
+  const [error, setError] = useState<boolean>(false);
+
+  useEffect(() => {
+    let mounted = true;
+
+    import("./qrcode.chunk")
+      .then(({ generateQRCodeSVG }) => {
+        if (mounted) {
+          try {
+            setSvgData(generateQRCodeSVG(value));
+          } catch {
+            setError(true);
+          }
+        }
+      })
+      .catch(() => {
+        if (mounted) {
+          setError(true);
+        }
+      });
+
+    return () => {
+      mounted = false;
+    };
+  }, [value]);
+
+  if (error) {
+    return null;
+  }
+
+  if (!svgData) {
+    return (
+      <div className="ShareDialog__active__qrcode ShareDialog__active__qrcode--loading">
+        <Spinner />
+      </div>
+    );
+  }
+
+  return (
+    <div
+      className="ShareDialog__active__qrcode"
+      role="img"
+      aria-label="QR code for collaboration link"
+      dangerouslySetInnerHTML={{ __html: svgData }}
+    />
+  );
+};

excalidraw-app/share/ShareDialog.scss

@@ -140,6 +140,31 @@
         gap: 0.75rem;
       }
 
+      &__qrcode {
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        align-self: center;
+        padding: 1rem;
+        background: #fff;
+        border-radius: 0.5rem;
+        border: 1px solid #e0e0e0;
+
+        $size: 150px;
+        width: $size;
+        height: $size;
+
+        & svg {
+          width: $size;
+          height: $size;
+        }
+
+        &--loading {
+          background: var(--island-bg-color);
+          border: 1px solid var(--dialog-border-color);
+        }
+      }
+
       &__description {
         border-top: 1px solid var(--color-gray-20);
 

excalidraw-app/share/ShareDialog.tsx

@@ -22,6 +22,7 @@ import { atom, useAtom, useAtomValue } from "../app-jotai";
 import { activeRoomLinkAtom } from "../collab/Collab";
 
 import "./ShareDialog.scss";
+import { QRCode } from "./QRCode";
 
 import type { CollabAPI } from "../collab/Collab";
 
@@ -142,6 +143,7 @@ const ActiveRoomDialog = ({
           }}
         />
       </div>
+      <QRCode value={activeRoomLink} />
       <div className="ShareDialog__active__description">
         <p>
           <span

excalidraw-app/share/qrcode.chunk.ts

@@ -0,0 +1,5 @@
+import { renderSVG } from "uqr";
+
+export const generateQRCodeSVG = (text: string): string => {
+  return renderSVG(text);
+};

package.json

@@ -34,7 +34,7 @@
     "prettier": "2.6.2",
     "rewire": "6.0.0",
     "rimraf": "^5.0.0",
-    "typescript": "4.9.4",
+    "typescript": "5.9.3",
     "vite": "5.0.12",
     "vite-plugin-checker": "0.7.2",
     "vite-plugin-ejs": "1.7.0",

packages/common/package.json

@@ -55,5 +55,11 @@
   "scripts": {
     "gen:types": "rimraf types && tsc",
     "build:esm": "rimraf dist && node ../../scripts/buildBase.js && yarn gen:types"
+  },
+  "dependencies": {
+    "tinycolor2": "1.6.0"
+  },
+  "devDependencies": {
+    "@types/tinycolor2": "1.4.6"
   }
 }

packages/common/src/__snapshots__/colors.test.ts.snap

@@ -0,0 +1,93 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`applyDarkModeFilter > COLOR_PALETTE regression tests > matches snapshot for all palette colors 1`] = `
+{
+  "black": "#d3d3d3",
+  "blue": [
+    "#121e26",
+    "#154162",
+    "#2273b4",
+    "#3791e0",
+    "#56a2e8",
+  ],
+  "bronze": [
+    "#221c1a",
+    "#362b26",
+    "#5a463d",
+    "#917569",
+    "#a98d84",
+  ],
+  "cyan": [
+    "#0a1e20",
+    "#004149",
+    "#007281",
+    "#0f8fa1",
+    "#3da5b6",
+  ],
+  "grape": [
+    "#211a25",
+    "#5b3165",
+    "#a954be",
+    "#d471ed",
+    "#e28af8",
+  ],
+  "gray": [
+    "#161718",
+    "#202325",
+    "#33383d",
+    "#6e757c",
+    "#b7bcc1",
+  ],
+  "green": [
+    "#0f1d12",
+    "#043b0c",
+    "#056715",
+    "#16842a",
+    "#39994b",
+  ],
+  "orange": [
+    "#22190d",
+    "#4c2b01",
+    "#924800",
+    "#cd6005",
+    "#f17634",
+  ],
+  "pink": [
+    "#26191e",
+    "#602e40",
+    "#b04d70",
+    "#f56e9d",
+    "#ff8dbc",
+  ],
+  "red": [
+    "#1f1717",
+    "#5a2c2c",
+    "#b44d4d",
+    "#fa6969",
+    "#ff8383",
+  ],
+  "teal": [
+    "#0a1d17",
+    "#00422b",
+    "#00744b",
+    "#039267",
+    "#32a783",
+  ],
+  "transparent": "#ededed00",
+  "violet": [
+    "#1f1c29",
+    "#4a3b72",
+    "#8a6cdf",
+    "#a885ff",
+    "#b595ff",
+  ],
+  "white": "#121212",
+  "yellow": [
+    "#1e1900",
+    "#362600",
+    "#5f3a00",
+    "#905000",
+    "#b86200",
+  ],
+}
+`;

packages/common/src/bounds.ts

@@ -0,0 +1,17 @@
+/**
+ * x and y position of top left corner, x and y position of bottom right corner
+ */
+export type Bounds = readonly [
+  minX: number,
+  minY: number,
+  maxX: number,
+  maxY: number,
+];
+
+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";

packages/common/src/colors.test.ts

@@ -0,0 +1,280 @@
+import {
+  applyDarkModeFilter,
+  COLOR_PALETTE,
+  rgbToHex,
+} from "@excalidraw/common";
+
+describe("applyDarkModeFilter", () => {
+  describe("basic transformations", () => {
+    it("transforms black to near-white", () => {
+      const result = applyDarkModeFilter("#000000");
+      // Black inverted 93% + hue rotate should be near white/light gray
+      expect(result).toBe("#ededed");
+    });
+
+    it("transforms white to near-black", () => {
+      const result = applyDarkModeFilter("#ffffff");
+      // White inverted 93% should be near black/dark gray
+      expect(result).toBe("#121212");
+    });
+
+    it("transforms pure red", () => {
+      const result = applyDarkModeFilter("#ff0000");
+      // Invert 93% + hue rotate 180deg produces a cyan-ish tint
+      expect(result).toBe("#ff9090");
+    });
+
+    it("transforms pure green", () => {
+      const result = applyDarkModeFilter("#00ff00");
+      // Invert 93% + hue rotate 180deg
+      expect(result).toBe("#008f00");
+    });
+
+    it("transforms pure blue", () => {
+      const result = applyDarkModeFilter("#0000ff");
+      // Invert 93% + hue rotate 180deg produces a light purple
+      expect(result).toBe("#cdcdff");
+    });
+  });
+
+  describe("color formats", () => {
+    it("handles hex with hash", () => {
+      const result = applyDarkModeFilter("#ff0000");
+      // Fully opaque colors return 6-char hex
+      expect(result).toMatch(/^#[0-9a-f]{6}$/);
+    });
+
+    it("handles named colors", () => {
+      const result = applyDarkModeFilter("red");
+      // "red" = #ff0000, fully opaque
+      expect(result).toBe("#ff9090");
+    });
+
+    it("handles rgb format", () => {
+      const result = applyDarkModeFilter("rgb(255, 0, 0)");
+      expect(result).toBe("#ff9090");
+    });
+
+    it("handles rgba format and preserves alpha", () => {
+      const result = applyDarkModeFilter("rgba(255, 0, 0, 0.5)");
+      expect(result).toMatch(/^#[0-9a-f]{8}$/);
+      // Alpha 0.5 = 128 in hex = 80
+      expect(result).toBe("#ff909080");
+    });
+
+    it("handles transparent", () => {
+      const result = applyDarkModeFilter("transparent");
+      // transparent = rgba(0,0,0,0), inverted should still have 0 alpha
+      expect(result).toBe("#ededed00");
+    });
+
+    it("handles shorthand hex", () => {
+      const result = applyDarkModeFilter("#f00");
+      expect(result).toBe("#ff9090");
+    });
+  });
+
+  describe("alpha preservation", () => {
+    it("omits alpha for full opacity", () => {
+      const result = applyDarkModeFilter("#ff0000ff");
+      // Full opacity returns 6-char hex (no alpha suffix)
+      expect(result).toBe("#ff9090");
+    });
+
+    it("preserves 50% opacity", () => {
+      const result = applyDarkModeFilter("#ff000080");
+      expect(result.slice(-2)).toBe("80");
+    });
+
+    it("preserves 0% opacity", () => {
+      const result = applyDarkModeFilter("#ff000000");
+      expect(result.slice(-2)).toBe("00");
+    });
+  });
+
+  describe("COLOR_PALETTE regression tests", () => {
+    it("transforms black from palette", () => {
+      // COLOR_PALETTE.black is #1e1e1e (not pure black)
+      const result = applyDarkModeFilter(COLOR_PALETTE.black);
+      expect(result).toBe("#d3d3d3");
+    });
+
+    it("transforms white from palette", () => {
+      const result = applyDarkModeFilter(COLOR_PALETTE.white);
+      expect(result).toBe("#121212");
+    });
+
+    it("transforms transparent from palette", () => {
+      const result = applyDarkModeFilter(COLOR_PALETTE.transparent);
+      expect(result).toBe("#ededed00");
+    });
+
+    // Test each color family from the palette (all opaque, so 6-char hex)
+    describe("red shades", () => {
+      const redShades = COLOR_PALETTE.red;
+      it.each(redShades.map((color, i) => [color, i]))(
+        "transforms red shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("blue shades", () => {
+      const blueShades = COLOR_PALETTE.blue;
+      it.each(blueShades.map((color, i) => [color, i]))(
+        "transforms blue shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("green shades", () => {
+      const greenShades = COLOR_PALETTE.green;
+      it.each(greenShades.map((color, i) => [color, i]))(
+        "transforms green shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("gray shades", () => {
+      const grayShades = COLOR_PALETTE.gray;
+      it.each(grayShades.map((color, i) => [color, i]))(
+        "transforms gray shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("bronze shades", () => {
+      const bronzeShades = COLOR_PALETTE.bronze;
+      it.each(bronzeShades.map((color, i) => [color, i]))(
+        "transforms bronze shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    // Snapshot test for full palette to catch any regressions
+    it("matches snapshot for all palette colors", () => {
+      const transformedPalette: Record<string, string | string[]> = {};
+
+      transformedPalette.black = applyDarkModeFilter(COLOR_PALETTE.black);
+      transformedPalette.white = applyDarkModeFilter(COLOR_PALETTE.white);
+      transformedPalette.transparent = applyDarkModeFilter(
+        COLOR_PALETTE.transparent,
+      );
+
+      // Transform color arrays
+      for (const colorName of [
+        "gray",
+        "red",
+        "pink",
+        "grape",
+        "violet",
+        "blue",
+        "cyan",
+        "teal",
+        "green",
+        "yellow",
+        "orange",
+        "bronze",
+      ] as const) {
+        const shades = COLOR_PALETTE[colorName];
+        transformedPalette[colorName] = shades.map((shade) =>
+          applyDarkModeFilter(shade),
+        );
+      }
+
+      expect(transformedPalette).toMatchSnapshot();
+    });
+  });
+
+  describe("caching", () => {
+    it("returns same result for same input (cached)", () => {
+      const result1 = applyDarkModeFilter("#ff0000");
+      const result2 = applyDarkModeFilter("#ff0000");
+      expect(result1).toBe(result2);
+    });
+  });
+});
+
+describe("rgbToHex", () => {
+  describe("basic RGB conversion", () => {
+    it("converts black (0,0,0)", () => {
+      expect(rgbToHex(0, 0, 0)).toBe("#000000");
+    });
+
+    it("converts white (255,255,255)", () => {
+      expect(rgbToHex(255, 255, 255)).toBe("#ffffff");
+    });
+
+    it("converts red (255,0,0)", () => {
+      expect(rgbToHex(255, 0, 0)).toBe("#ff0000");
+    });
+
+    it("converts green (0,255,0)", () => {
+      expect(rgbToHex(0, 255, 0)).toBe("#00ff00");
+    });
+
+    it("converts blue (0,0,255)", () => {
+      expect(rgbToHex(0, 0, 255)).toBe("#0000ff");
+    });
+
+    it("converts arbitrary color", () => {
+      expect(rgbToHex(30, 30, 30)).toBe("#1e1e1e");
+    });
+  });
+
+  describe("leading zeros preservation", () => {
+    it("preserves leading zeros for low values", () => {
+      expect(rgbToHex(0, 0, 1)).toBe("#000001");
+      expect(rgbToHex(0, 1, 0)).toBe("#000100");
+      expect(rgbToHex(1, 0, 0)).toBe("#010000");
+    });
+
+    it("preserves zeros for single-digit hex values", () => {
+      expect(rgbToHex(15, 15, 15)).toBe("#0f0f0f");
+    });
+  });
+
+  describe("alpha handling", () => {
+    it("omits alpha when undefined", () => {
+      expect(rgbToHex(255, 0, 0)).toBe("#ff0000");
+      expect(rgbToHex(255, 0, 0, undefined)).toBe("#ff0000");
+    });
+
+    it("omits alpha when fully opaque (1)", () => {
+      expect(rgbToHex(255, 0, 0, 1)).toBe("#ff0000");
+    });
+
+    it("includes alpha for semi-transparent (0.5)", () => {
+      // 0.5 * 255 = 127.5 -> rounds to 128 = 0x80
+      expect(rgbToHex(255, 0, 0, 0.5)).toBe("#ff000080");
+    });
+
+    it("includes alpha for fully transparent (0)", () => {
+      expect(rgbToHex(255, 0, 0, 0)).toBe("#ff000000");
+    });
+
+    it("includes alpha for near-opaque (0.99)", () => {
+      // 0.99 * 255 = 252.45 -> rounds to 252 = 0xfc
+      expect(rgbToHex(255, 0, 0, 0.99)).toBe("#ff0000fc");
+    });
+
+    it("pads alpha with leading zero when needed", () => {
+      // 0.05 * 255 = 12.75 -> rounds to 13 = 0x0d
+      expect(rgbToHex(255, 0, 0, 0.05)).toBe("#ff00000d");
+    });
+  });
+});

packages/common/src/colors.ts

@@ -1,7 +1,121 @@
 import oc from "open-color";
+import tinycolor from "tinycolor2";
+
+import { clamp } from "@excalidraw/math";
+import { degreesToRadians } from "@excalidraw/math";
+
+import type { Degrees } from "@excalidraw/math";
 
 import type { Merge } from "./utility-types";
 
+export { tinycolor };
+
+// Browser-only cache to avoid memory leaks on server
+const DARK_MODE_COLORS_CACHE: Map<string, string> | null =
+  typeof window !== "undefined" ? new Map() : null;
+
+// ---------------------------------------------------------------------------
+// Dark mode color transformation
+// ---------------------------------------------------------------------------
+
+function cssHueRotate(
+  red: number,
+  green: number,
+  blue: number,
+  degrees: Degrees,
+): { r: number; g: number; b: number } {
+  // normalize
+  const r = red / 255;
+  const g = green / 255;
+  const b = blue / 255;
+
+  // Convert degrees to radians
+  const a = degreesToRadians(degrees);
+
+  const c = Math.cos(a);
+  const s = Math.sin(a);
+
+  // rotation matrix
+  const matrix = [
+    0.213 + c * 0.787 - s * 0.213,
+    0.715 - c * 0.715 - s * 0.715,
+    0.072 - c * 0.072 + s * 0.928,
+    0.213 - c * 0.213 + s * 0.143,
+    0.715 + c * 0.285 + s * 0.14,
+    0.072 - c * 0.072 - s * 0.283,
+    0.213 - c * 0.213 - s * 0.787,
+    0.715 - c * 0.715 + s * 0.715,
+    0.072 + c * 0.928 + s * 0.072,
+  ];
+
+  // transform
+  const newR = r * matrix[0] + g * matrix[1] + b * matrix[2];
+  const newG = r * matrix[3] + g * matrix[4] + b * matrix[5];
+  const newB = r * matrix[6] + g * matrix[7] + b * matrix[8];
+
+  // clamp the values to [0, 1] range and convert back to [0, 255]
+  return {
+    r: Math.round(Math.max(0, Math.min(1, newR)) * 255),
+    g: Math.round(Math.max(0, Math.min(1, newG)) * 255),
+    b: Math.round(Math.max(0, Math.min(1, newB)) * 255),
+  };
+}
+
+const cssInvert = (
+  r: number,
+  g: number,
+  b: number,
+  percent: number,
+): { r: number; g: number; b: number } => {
+  const p = clamp(percent, 0, 100) / 100;
+
+  // Function to invert a single color component
+  const invertComponent = (color: number): number => {
+    // Apply the invert formula
+    const inverted = color * (1 - p) + (255 - color) * p;
+    // Round to the nearest integer and clamp to [0, 255]
+    return Math.round(clamp(inverted, 0, 255));
+  };
+
+  // Calculate the inverted RGB components
+  const invertedR = invertComponent(r);
+  const invertedG = invertComponent(g);
+  const invertedB = invertComponent(b);
+
+  return { r: invertedR, g: invertedG, b: invertedB };
+};
+
+export const applyDarkModeFilter = (color: string): string => {
+  const cached = DARK_MODE_COLORS_CACHE?.get(color);
+  if (cached) {
+    return cached;
+  }
+
+  const tc = tinycolor(color);
+  const alpha = tc.getAlpha();
+
+  // order of operations matters
+  // (corresponds to "filter: invert(invertPercent) hue-rotate(hueDegrees)" in css)
+  const rgb = tc.toRgb();
+  const inverted = cssInvert(rgb.r, rgb.g, rgb.b, 93);
+  const rotated = cssHueRotate(
+    inverted.r,
+    inverted.g,
+    inverted.b,
+    180 as Degrees,
+  );
+
+  const result = rgbToHex(rotated.r, rotated.g, rotated.b, alpha);
+
+  if (DARK_MODE_COLORS_CACHE) {
+    DARK_MODE_COLORS_CACHE.set(color, result);
+  }
+
+  return result;
+};
+
+// ---------------------------------------------------------------------------
+
 export const COLOR_OUTLINE_CONTRAST_THRESHOLD = 240;
 
 // FIXME can't put to utils.ts rn because of circular dependency
@@ -167,7 +281,22 @@ export const getAllColorsSpecificShade = (index: 0 | 1 | 2 | 3 | 4) =>
     COLOR_PALETTE.red[index],
   ] as const;
 
-export const rgbToHex = (r: number, g: number, b: number) =>
-  `#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`;
+export const rgbToHex = (r: number, g: number, b: number, a?: number) => {
+  // (1 << 24) adds 0x1000000 to ensure the hex string is always 7 chars,
+  // then slice(1) removes the leading "1" to get exactly 6 hex digits
+  // e.g. rgb(0,0,0) -> 0x1000000 -> "1000000" -> "000000"
+  const hex6 = `#${((1 << 24) + (r << 16) + (g << 8) + b)
+    .toString(16)
+    .slice(1)}`;
+  if (a !== undefined && a < 1) {
+    // convert alpha from 0-1 float to 0-255 int, then to 2-digit hex
+    // e.g. 0.5 -> 128 -> "80"
+    const alphaHex = Math.round(a * 255)
+      .toString(16)
+      .padStart(2, "0");
+    return `${hex6}${alphaHex}`;
+  }
+  return hex6;
+};
 
 // -----------------------------------------------------------------------------

packages/common/src/constants.ts

@@ -108,6 +108,13 @@ export const CLASSES = {
   FRAME_NAME: "frame-name",
 };
 
+export const FONT_SIZES = {
+  sm: 16,
+  md: 20,
+  lg: 28,
+  xl: 36,
+} as const;
+
 export const CJK_HAND_DRAWN_FALLBACK_FONT = "Xiaolai";
 export const WINDOWS_EMOJI_FALLBACK_FONT = "Segoe UI Emoji";
 
@@ -298,9 +305,6 @@ 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;
@@ -499,6 +503,8 @@ export const LINE_POLYGON_POINT_MERGE_DISTANCE = 20;
 
 export const DOUBLE_TAP_POSITION_THRESHOLD = 35;
 
+export const BIND_MODE_TIMEOUT = 700; // ms
+
 // glass background for mobile action buttons
 export const MOBILE_ACTION_BUTTON_BG = {
   background: "var(--mobile-action-button-bg)",

packages/common/src/index.ts

@@ -1,4 +1,5 @@
 export * from "./binary-heap";
+export * from "./bounds";
 export * from "./colors";
 export * from "./constants";
 export * from "./font-metadata";

packages/common/src/utils.ts

@@ -1,10 +1,6 @@
 import { average } from "@excalidraw/math";
 
-import type {
-  ExcalidrawBindableElement,
-  FontFamilyValues,
-  FontString,
-} from "@excalidraw/element/types";
+import type { FontFamilyValues, FontString } from "@excalidraw/element/types";
 
 import type {
   ActiveTool,
@@ -14,7 +10,7 @@ import type {
   Zoom,
 } from "@excalidraw/excalidraw/types";
 
-import { COLOR_PALETTE } from "./colors";
+import { tinycolor } from "./colors";
 import {
   DEFAULT_VERSION,
   ENV,
@@ -382,6 +378,10 @@ export const removeSelection = () => {
 
 export const distance = (x: number, y: number) => Math.abs(x - y);
 
+export const isSelectionLikeTool = (type: ToolType | "custom") => {
+  return type === "selection" || type === "lasso";
+};
+
 export const updateActiveTool = (
   appState: Pick<AppState, "activeTool">,
   data: ((
@@ -549,18 +549,9 @@ export const mapFind = <T, K>(
 };
 
 export const isTransparent = (color: string) => {
-  const isRGBTransparent = color.length === 5 && color.substr(4, 1) === "0";
-  const isRRGGBBTransparent = color.length === 9 && color.substr(7, 2) === "00";
-  return (
-    isRGBTransparent ||
-    isRRGGBBTransparent ||
-    color === COLOR_PALETTE.transparent
-  );
+  return tinycolor(color).getAlpha() === 0;
 };
 
-export const isBindingFallthroughEnabled = (el: ExcalidrawBindableElement) =>
-  el.fillStyle !== "solid" || isTransparent(el.backgroundColor);
-
 export type ResolvablePromise<T> = Promise<T> & {
   resolve: [T] extends [undefined]
     ? (value?: MaybePromise<Awaited<T>>) => void
@@ -1160,39 +1151,69 @@ export const normalizeEOL = (str: string) => {
 };
 
 // -----------------------------------------------------------------------------
-type HasBrand<T> = {
+export type HasBrand<T> = {
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
-  [K in keyof T]: K extends `~brand${infer _}` ? true : never;
+  [K in keyof T]: K extends `~brand${infer _}` | "_brand" ? true : never;
 }[keyof T];
 
 type RemoveAllBrands<T> = HasBrand<T> extends true
   ? {
       // eslint-disable-next-line @typescript-eslint/no-unused-vars
-      [K in keyof T as K extends `~brand~${infer _}` ? never : K]: T[K];
+      [K in keyof T as K extends `~brand~${infer _}` | "_brand"
+        ? never
+        : K]: T[K];
     }
-  : never;
+  : T;
 
-// adapted from https://github.com/colinhacks/zod/discussions/1994#discussioncomment-6068940
-// currently does not cover all types (e.g. tuples, promises...)
-type Unbrand<T> = T extends Map<infer E, infer F>
-  ? Map<E, F>
+// For accepting values - uses loose matching for branded types
+// Preserves readonly modifier: mutable array requires mutable input
+type UnbrandForValue<T> = T extends Map<infer E, infer F>
+  ? Map<UnbrandForValue<E>, UnbrandForValue<F>>
   : T extends Set<infer E>
-  ? Set<E>
-  : T extends Array<infer E>
-  ? Array<E>
+  ? Set<UnbrandForValue<E>>
+  : T extends readonly any[]
+  ? T extends any[]
+    ? unknown[] // mutable array - require mutable input
+    : readonly unknown[] // readonly array - accept readonly input
   : RemoveAllBrands<T>;
 
+// For return types - preserves array element unbranding
+export type Unbrand<T> = T extends Map<infer E, infer F>
+  ? Map<Unbrand<E>, Unbrand<F>>
+  : T extends Set<infer E>
+  ? Set<Unbrand<E>>
+  : T extends readonly (infer E)[]
+  ? Array<Unbrand<E>>
+  : RemoveAllBrands<T>;
+
+export type CombineBrands<BrandedType, CurrentType> =
+  BrandedType extends readonly (infer BE)[]
+    ? CurrentType extends readonly (infer CE)[]
+      ? Array<CE & BE>
+      : CurrentType & BrandedType
+    : CurrentType & BrandedType;
+
+export type CombineBrandsIfNeeded<T, Required> = [T] extends [Required]
+  ? T[]
+  : HasBrand<T> extends true
+  ? CombineBrands<T, Required>[]
+  : Required[];
+
 /**
  * Makes type into a branded type, ensuring that value is assignable to
- * the base ubranded type. Optionally you can explicitly supply current value
+ * the base unbranded type. Optionally you can explicitly supply current value
  * type to combine both (useful for composite branded types. Make sure you
  * compose branded types which are not composite themselves.)
  */
-export const toBrandedType = <BrandedType, CurrentType = BrandedType>(
-  value: Unbrand<BrandedType>,
-) => {
-  return value as CurrentType & BrandedType;
-};
+export function toBrandedType<BrandedType>(
+  value: UnbrandForValue<BrandedType>,
+): BrandedType;
+export function toBrandedType<BrandedType, CurrentType>(
+  value: CurrentType,
+): CombineBrands<BrandedType, CurrentType>;
+export function toBrandedType(value: unknown) {
+  return value;
+}
 
 // -----------------------------------------------------------------------------
 
@@ -1270,3 +1291,47 @@ export const reduceToCommonValue = <T, R = T>(
 
   return commonValue;
 };
+
+type FEATURE_FLAGS = {
+  COMPLEX_BINDINGS: boolean;
+};
+
+const FEATURE_FLAGS_STORAGE_KEY = "excalidraw-feature-flags";
+const DEFAULT_FEATURE_FLAGS: FEATURE_FLAGS = {
+  COMPLEX_BINDINGS: false,
+};
+let featureFlags: FEATURE_FLAGS | null = null;
+
+export const getFeatureFlag = <F extends keyof FEATURE_FLAGS>(
+  flag: F,
+): FEATURE_FLAGS[F] => {
+  if (!featureFlags) {
+    try {
+      const serializedFlags = localStorage.getItem(FEATURE_FLAGS_STORAGE_KEY);
+      if (serializedFlags) {
+        const flags = JSON.parse(serializedFlags);
+        featureFlags = flags ?? DEFAULT_FEATURE_FLAGS;
+      }
+    } catch {}
+  }
+
+  return (featureFlags || DEFAULT_FEATURE_FLAGS)[flag];
+};
+
+export const setFeatureFlag = <F extends keyof FEATURE_FLAGS>(
+  flag: F,
+  value: FEATURE_FLAGS[F],
+) => {
+  try {
+    featureFlags = {
+      ...(featureFlags || DEFAULT_FEATURE_FLAGS),
+      [flag]: value,
+    };
+    localStorage.setItem(
+      FEATURE_FLAGS_STORAGE_KEY,
+      JSON.stringify(featureFlags),
+    );
+  } catch (e) {
+    console.error("unable to set feature flag", e);
+  }
+};

packages/common/src/visualdebug.ts

@@ -6,12 +6,10 @@ import {
   type LocalPoint,
 } from "@excalidraw/math";
 
-import { isBounds } from "@excalidraw/element";
-
 import type { Curve } from "@excalidraw/math";
 import type { LineSegment } from "@excalidraw/utils";
 
-import type { Bounds } from "@excalidraw/element";
+import { type Bounds, isBounds } from "./bounds";
 
 // The global data holder to collect the debug operations
 declare global {
@@ -23,9 +21,11 @@ declare global {
   }
 }
 
+export type Polygon = GlobalPoint[];
+
 export type DebugElement = {
   color: string;
-  data: LineSegment<GlobalPoint> | Curve<GlobalPoint>;
+  data: LineSegment<GlobalPoint> | Curve<GlobalPoint> | Polygon;
   permanent: boolean;
 };
 
@@ -131,6 +131,20 @@ export const debugDrawBounds = (
   );
 };
 
+export const debugDrawPolygon = (
+  points: GlobalPoint[],
+  opts?: {
+    color?: string;
+    permanent?: boolean;
+  },
+) => {
+  addToCurrentFrame({
+    color: opts?.color ?? "blue",
+    data: points,
+    permanent: !!opts?.permanent,
+  });
+};
+
 export const debugDrawPoints = (
   {
     x,
@@ -139,7 +153,7 @@ export const debugDrawPoints = (
   }: {
     x: number;
     y: number;
-    points: LocalPoint[];
+    points: readonly LocalPoint[];
   },
   options?: any,
 ) => {

packages/element/src/__tests__/__snapshots__/transform.test.ts.snap

@@ -88,8 +88,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "ellipse-1",
-    "focus": -0.007519379844961235,
-    "gap": 11.562288374879595,
+    "fixedPoint": [
+      0.04,
+      0.4633333333333333,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -98,7 +101,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -118,8 +120,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id49",
-    "focus": -0.0813953488372095,
-    "gap": 1,
+    "fixedPoint": [
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1864ab",
   "strokeStyle": "solid",
@@ -144,8 +149,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "ellipse-1",
-    "focus": 0.10666666666666667,
-    "gap": 3.8343264684446097,
+    "fixedPoint": [
+      -0.01,
+      0.44666666666666666,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -154,7 +162,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -174,8 +181,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "startArrowhead": null,
   "startBinding": {
     "elementId": "diamond-1",
-    "focus": 0,
-    "gap": 4.535423522449215,
+    "fixedPoint": [
+      0.9357142857142857,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#e67700",
   "strokeStyle": "solid",
@@ -334,8 +344,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "text-2",
-    "focus": 0,
-    "gap": 16,
+    "fixedPoint": [
+      -2.05,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -344,7 +357,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -364,8 +376,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "startArrowhead": null,
   "startBinding": {
     "elementId": "text-1",
-    "focus": 0,
-    "gap": 1,
+    "fixedPoint": [
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -436,8 +451,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "id42",
-    "focus": -0,
-    "gap": 1,
+    "fixedPoint": [
+      0,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -446,7 +464,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -466,8 +483,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id41",
-    "focus": 0,
-    "gap": 1,
+    "fixedPoint": [
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -612,8 +632,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "id46",
-    "focus": -0,
-    "gap": 1,
+    "fixedPoint": [
+      0,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -622,7 +645,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -642,8 +664,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id45",
-    "focus": 0,
-    "gap": 1,
+    "fixedPoint": [
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -839,7 +864,6 @@ exports[`Test Transform > should transform linear elements 1`] = `
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -887,7 +911,6 @@ exports[`Test Transform > should transform linear elements 2`] = `
   "id": Any<String>,
   "index": "a1",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -934,7 +957,6 @@ exports[`Test Transform > should transform linear elements 3`] = `
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -982,7 +1004,6 @@ exports[`Test Transform > should transform linear elements 4`] = `
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1476,8 +1497,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "Alice",
-    "focus": -0,
-    "gap": 5.299874999999986,
+    "fixedPoint": [
+      -0.07542628418945944,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -1486,7 +1510,6 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "id": Any<String>,
   "index": "a4",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1508,8 +1531,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "startArrowhead": null,
   "startBinding": {
     "elementId": "Bob",
-    "focus": 0,
-    "gap": 1,
+    "fixedPoint": [
+      1.000004978564514,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1539,8 +1565,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "B",
-    "focus": 0,
-    "gap": 32,
+    "fixedPoint": [
+      0.46387050630528887,
+      0.48466257668711654,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -1549,7 +1578,6 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "id": Any<String>,
   "index": "a5",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1567,8 +1595,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "startArrowhead": null,
   "startBinding": {
     "elementId": "Bob",
-    "focus": 0,
-    "gap": 1,
+    "fixedPoint": [
+      0.39381496335223337,
+      1,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1858,7 +1889,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1911,7 +1941,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a1",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1964,7 +1993,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -2017,7 +2045,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,

packages/element/src/__tests__/transform.test.ts

@@ -1,11 +1,12 @@
 import { pointFrom } from "@excalidraw/math";
 import { vi } from "vitest";
 
-import type { ExcalidrawArrowElement } from "@excalidraw/element/types";
+import {
+  convertToExcalidrawElements,
+  type ExcalidrawElementSkeleton,
+} from "../transform";
 
-import { convertToExcalidrawElements } from "./transform";
-
-import type { ExcalidrawElementSkeleton } from "./transform";
+import type { ExcalidrawArrowElement } from "../types";
 
 const opts = { regenerateIds: false };
 
@@ -432,12 +433,9 @@ describe("Test Transform", () => {
         boundElements: [{ id: text.id, type: "text" }],
         startBinding: {
           elementId: rectangle.id,
-          focus: 0,
-          gap: 1,
         },
         endBinding: {
           elementId: ellipse.id,
-          focus: -0,
         },
       });
 
@@ -517,12 +515,9 @@ describe("Test Transform", () => {
         boundElements: [{ id: text1.id, type: "text" }],
         startBinding: {
           elementId: text2.id,
-          focus: 0,
-          gap: 1,
         },
         endBinding: {
           elementId: text3.id,
-          focus: -0,
         },
       });
 
@@ -780,8 +775,8 @@ describe("Test Transform", () => {
       const [arrow, rect] = excalidrawElements;
       expect((arrow as ExcalidrawArrowElement).endBinding).toStrictEqual({
         elementId: "rect-1",
-        focus: -0,
-        gap: 25,
+        fixedPoint: [-2.05, 0.5001],
+        mode: "orbit",
       });
       expect(rect.boundElements).toStrictEqual([
         {

packages/element/src/bounds.ts

@@ -2,6 +2,7 @@ import rough from "roughjs/bin/rough";
 
 import {
   arrayToMap,
+  type Bounds,
   invariant,
   rescalePoints,
   sizeOf,
@@ -78,16 +79,6 @@ export type RectangleBox = {
 
 type MaybeQuadraticSolution = [number | null, number | null] | false;
 
-/**
- * x and y position of top left corner, x and y position of bottom right corner
- */
-export type Bounds = readonly [
-  minX: number,
-  minY: number,
-  maxX: number,
-  maxY: number,
-];
-
 export type SceneBounds = readonly [
   sceneX: number,
   sceneY: number,
@@ -906,6 +897,7 @@ export const getArrowheadPoints = (
   return [x2, y2, x3, y3, x4, y4];
 };
 
+// TODO reuse shape.ts
 const generateLinearElementShape = (
   element: ExcalidrawLinearElement,
 ): Drawable => {
@@ -963,7 +955,7 @@ const getLinearElementRotatedBounds = (
   }
 
   // first element is always the curve
-  const cachedShape = ShapeCache.get(element)?.[0];
+  const cachedShape = ShapeCache.get(element, null)?.[0];
   const shape = cachedShape ?? generateLinearElementShape(element);
   const ops = getCurvePathOps(shape);
   const transformXY = ([x, y]: GlobalPoint) =>
@@ -1276,6 +1268,13 @@ export const elementCenterPoint = (
   xOffset: number = 0,
   yOffset: number = 0,
 ) => {
+  if (isLinearElement(element)) {
+    const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
+    const [x, y] = pointFrom<GlobalPoint>((x1 + x2) / 2, (y1 + y2) / 2);
+
+    return pointFrom<GlobalPoint>(x + xOffset, y + yOffset);
+  }
+
   const [x, y] = getCenterForBounds(getElementBounds(element, elementsMap));
 
   return pointFrom<GlobalPoint>(x + xOffset, y + yOffset);

packages/element/src/collision.ts

@@ -1,4 +1,4 @@
-import { isTransparent } from "@excalidraw/common";
+import { invariant, isTransparent, type Bounds } from "@excalidraw/common";
 import {
   curveIntersectLineSegment,
   isPointWithinBounds,
@@ -29,15 +29,18 @@ import type { FrameNameBounds } from "@excalidraw/excalidraw/types";
 
 import { isPathALoop } from "./utils";
 import {
-  type Bounds,
   doBoundsIntersect,
   elementCenterPoint,
   getCenterForBounds,
   getCubicBezierCurveBound,
+  getDiamondPoints,
   getElementBounds,
+  pointInsideBounds,
 } from "./bounds";
 import {
   hasBoundTextElement,
+  isBindableElement,
+  isFrameLikeElement,
   isFreeDrawElement,
   isIframeLikeElement,
   isImageElement,
@@ -58,12 +61,17 @@ import { distanceToElement } from "./distance";
 
 import type {
   ElementsMap,
+  ExcalidrawBindableElement,
   ExcalidrawDiamondElement,
   ExcalidrawElement,
   ExcalidrawEllipseElement,
   ExcalidrawFreeDrawElement,
   ExcalidrawLinearElement,
   ExcalidrawRectanguloidElement,
+  NonDeleted,
+  NonDeletedExcalidrawElement,
+  NonDeletedSceneElementsMap,
+  Ordered,
 } from "./types";
 
 export const shouldTestInside = (element: ExcalidrawElement) => {
@@ -94,6 +102,7 @@ export type HitTestArgs = {
   threshold: number;
   elementsMap: ElementsMap;
   frameNameBound?: FrameNameBounds | null;
+  overrideShouldTestInside?: boolean;
 };
 
 export const hitElementItself = ({
@@ -102,6 +111,7 @@ export const hitElementItself = ({
   threshold,
   elementsMap,
   frameNameBound = null,
+  overrideShouldTestInside = false,
 }: HitTestArgs) => {
   // Hit test against a frame's name
   const hitFrameName = frameNameBound
@@ -134,7 +144,9 @@ export const hitElementItself = ({
   }
 
   // Do the precise (and relatively costly) hit test
-  const hitElement = shouldTestInside(element)
+  const hitElement = (
+    overrideShouldTestInside ? true : 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) ||
@@ -193,6 +205,116 @@ export const hitElementBoundText = (
   return isPointInElement(point, boundTextElement, elementsMap);
 };
 
+const bindingBorderTest = (
+  element: NonDeleted<ExcalidrawBindableElement>,
+  [x, y]: Readonly<GlobalPoint>,
+  elementsMap: NonDeletedSceneElementsMap,
+  tolerance: number = 0,
+): boolean => {
+  const p = pointFrom<GlobalPoint>(x, y);
+  const shouldTestInside =
+    // disable fullshape snapping for frame elements so we
+    // can bind to frame children
+    !isFrameLikeElement(element);
+
+  // PERF: Run a cheap test to see if the binding element
+  // is even close to the element
+  const t = Math.max(1, tolerance);
+  const bounds = [x - t, y - t, x + t, y + t] as Bounds;
+  const elementBounds = getElementBounds(element, elementsMap);
+  if (!doBoundsIntersect(bounds, elementBounds)) {
+    return false;
+  }
+
+  // If the element is inside a frame, we should clip the element
+  if (element.frameId) {
+    const enclosingFrame = elementsMap.get(element.frameId);
+    if (enclosingFrame && isFrameLikeElement(enclosingFrame)) {
+      const enclosingFrameBounds = getElementBounds(
+        enclosingFrame,
+        elementsMap,
+      );
+      if (!pointInsideBounds(p, enclosingFrameBounds)) {
+        return false;
+      }
+    }
+  }
+
+  // Do the intersection test against the element since it's close enough
+  const intersections = intersectElementWithLineSegment(
+    element,
+    elementsMap,
+    lineSegment(elementCenterPoint(element, elementsMap), p),
+  );
+  const distance = distanceToElement(element, elementsMap, p);
+
+  return shouldTestInside
+    ? intersections.length === 0 || distance <= tolerance
+    : intersections.length > 0 && distance <= t;
+};
+
+export const getAllHoveredElementAtPoint = (
+  point: Readonly<GlobalPoint>,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  toleranceFn?: (element: ExcalidrawBindableElement) => number,
+): NonDeleted<ExcalidrawBindableElement>[] => {
+  const candidateElements: NonDeleted<ExcalidrawBindableElement>[] = [];
+  // We need to to hit testing from front (end of the array) to back (beginning of the array)
+  // because array is ordered from lower z-index to highest and we want element z-index
+  // with higher z-index
+  for (let index = elements.length - 1; index >= 0; --index) {
+    const element = elements[index];
+
+    invariant(
+      !element.isDeleted,
+      "Elements in the function parameter for getAllElementsAtPositionForBinding() should not contain deleted elements",
+    );
+
+    if (
+      isBindableElement(element, false) &&
+      bindingBorderTest(element, point, elementsMap, toleranceFn?.(element))
+    ) {
+      candidateElements.push(element);
+
+      if (!isTransparent(element.backgroundColor)) {
+        break;
+      }
+    }
+  }
+
+  return candidateElements;
+};
+
+export const getHoveredElementForBinding = (
+  point: Readonly<GlobalPoint>,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  toleranceFn?: (element: ExcalidrawBindableElement) => number,
+): NonDeleted<ExcalidrawBindableElement> | null => {
+  const candidateElements = getAllHoveredElementAtPoint(
+    point,
+    elements,
+    elementsMap,
+    toleranceFn,
+  );
+
+  if (!candidateElements || candidateElements.length === 0) {
+    return null;
+  }
+
+  if (candidateElements.length === 1) {
+    return candidateElements[0];
+  }
+
+  // Prefer smaller shapes
+  return candidateElements
+    .sort(
+      (a, b) => b.width ** 2 + b.height ** 2 - (a.width ** 2 + a.height ** 2),
+    )
+    .pop() as NonDeleted<ExcalidrawBindableElement>;
+};
+
 /**
  * Intersect a line with an element for binding test
  *
@@ -554,3 +676,61 @@ export const isPointInElement = (
 
   return intersections.length % 2 === 1;
 };
+
+export const isBindableElementInsideOtherBindable = (
+  innerElement: ExcalidrawBindableElement,
+  outerElement: ExcalidrawBindableElement,
+  elementsMap: ElementsMap,
+): boolean => {
+  // Get corner points of the inner element based on its type
+  const getCornerPoints = (
+    element: ExcalidrawElement,
+    offset: number,
+  ): GlobalPoint[] => {
+    const { x, y, width, height, angle } = element;
+    const center = elementCenterPoint(element, elementsMap);
+
+    if (element.type === "diamond") {
+      // Diamond has 4 corner points at the middle of each side
+      const [topX, topY, rightX, rightY, bottomX, bottomY, leftX, leftY] =
+        getDiamondPoints(element);
+      const corners: GlobalPoint[] = [
+        pointFrom(x + topX, y + topY - offset), // top
+        pointFrom(x + rightX + offset, y + rightY), // right
+        pointFrom(x + bottomX, y + bottomY + offset), // bottom
+        pointFrom(x + leftX - offset, y + leftY), // left
+      ];
+      return corners.map((corner) => pointRotateRads(corner, center, angle));
+    }
+    if (element.type === "ellipse") {
+      // For ellipse, test points at the extremes (top, right, bottom, left)
+      const cx = x + width / 2;
+      const cy = y + height / 2;
+      const rx = width / 2;
+      const ry = height / 2;
+      const corners: GlobalPoint[] = [
+        pointFrom(cx, cy - ry - offset), // top
+        pointFrom(cx + rx + offset, cy), // right
+        pointFrom(cx, cy + ry + offset), // bottom
+        pointFrom(cx - rx - offset, cy), // left
+      ];
+      return corners.map((corner) => pointRotateRads(corner, center, angle));
+    }
+    // Rectangle and other rectangular shapes (image, text, etc.)
+    const corners: GlobalPoint[] = [
+      pointFrom(x - offset, y - offset), // top-left
+      pointFrom(x + width + offset, y - offset), // top-right
+      pointFrom(x + width + offset, y + height + offset), // bottom-right
+      pointFrom(x - offset, y + height + offset), // bottom-left
+    ];
+    return corners.map((corner) => pointRotateRads(corner, center, angle));
+  };
+
+  const offset = (-1 * Math.max(innerElement.width, innerElement.height)) / 20; // 5% offset
+  const innerCorners = getCornerPoints(innerElement, offset);
+
+  // Check if all corner points of the inner element are inside the outer element
+  return innerCorners.every((corner) =>
+    isPointInElement(corner, outerElement, elementsMap),
+  );
+};

packages/element/src/comparisons.ts

@@ -16,7 +16,8 @@ export const hasStrokeColor = (type: ElementOrToolType) =>
   type === "freedraw" ||
   type === "arrow" ||
   type === "line" ||
-  type === "text";
+  type === "text" ||
+  type === "embeddable";
 
 export const hasStrokeWidth = (type: ElementOrToolType) =>
   type === "rectangle" ||

packages/element/src/dragElements.ts

@@ -1,7 +1,9 @@
 import {
+  type Bounds,
   TEXT_AUTOWRAP_THRESHOLD,
   getGridPoint,
   getFontString,
+  DRAGGING_THRESHOLD,
 } from "@excalidraw/common";
 
 import type {
@@ -13,7 +15,7 @@ import type {
 
 import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
 
-import { updateBoundElements } from "./binding";
+import { unbindBindingElement, updateBoundElements } from "./binding";
 import { getCommonBounds } from "./bounds";
 import { getPerfectElementSize } from "./sizeHelpers";
 import { getBoundTextElement } from "./textElement";
@@ -28,7 +30,6 @@ import {
 
 import type { Scene } from "./Scene";
 
-import type { Bounds } from "./bounds";
 import type { ExcalidrawElement } from "./types";
 
 export const dragSelectedElements = (
@@ -102,9 +103,26 @@ export const dragSelectedElements = (
     gridSize,
   );
 
+  const elementsToUpdateIds = new Set(
+    Array.from(elementsToUpdate, (el) => el.id),
+  );
+
   elementsToUpdate.forEach((element) => {
-    updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+    const isArrow = !isArrowElement(element);
+    const isStartBoundElementSelected =
+      isArrow ||
+      (element.startBinding
+        ? elementsToUpdateIds.has(element.startBinding.elementId)
+        : false);
+    const isEndBoundElementSelected =
+      isArrow ||
+      (element.endBinding
+        ? elementsToUpdateIds.has(element.endBinding.elementId)
+        : false);
+
     if (!isArrowElement(element)) {
+      updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+
       // skip arrow labels since we calculate its position during render
       const textElement = getBoundTextElement(
         element,
@@ -121,6 +139,33 @@ export const dragSelectedElements = (
       updateBoundElements(element, scene, {
         simultaneouslyUpdated: Array.from(elementsToUpdate),
       });
+    } else if (
+      // NOTE: Add a little initial drag to the arrow dragging when the arrow
+      // is the single element being dragged to avoid accidentally unbinding
+      // the arrow when the user just wants to select it.
+
+      elementsToUpdate.size > 1 ||
+      Math.max(Math.abs(adjustedOffset.x), Math.abs(adjustedOffset.y)) >
+        DRAGGING_THRESHOLD ||
+      (!element.startBinding && !element.endBinding)
+    ) {
+      updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+
+      const shouldUnbindStart =
+        element.startBinding && !isStartBoundElementSelected;
+      const shouldUnbindEnd = element.endBinding && !isEndBoundElementSelected;
+      if (shouldUnbindStart || shouldUnbindEnd) {
+        // NOTE: Moving the bound arrow should unbind it, otherwise we would
+        // have weird situations, like 0 lenght arrow when the user moves
+        // the arrow outside a filled shape suddenly forcing the arrow start
+        // and end point to jump "outside" the shape.
+        if (shouldUnbindStart) {
+          unbindBindingElement(element, "start", scene);
+        }
+        if (shouldUnbindEnd) {
+          unbindBindingElement(element, "end", scene);
+        }
+      }
     }
   });
 };

packages/element/src/elbowArrow.ts

@@ -14,10 +14,10 @@ import {
 } from "@excalidraw/math";
 
 import {
+  type Bounds,
   BinaryHeap,
   invariant,
   isAnyTrue,
-  tupleToCoors,
   getSizeFromPoints,
   isDevEnv,
   arrayToMap,
@@ -27,10 +27,11 @@ import type { AppState } from "@excalidraw/excalidraw/types";
 
 import {
   bindPointToSnapToElementOutline,
-  FIXED_BINDING_DISTANCE,
   getHeadingForElbowArrowSnap,
   getGlobalFixedPointForBindableElement,
-  getHoveredElementForBinding,
+  getBindingGap,
+  maxBindingDistance_simple,
+  BASE_BINDING_GAP_ELBOW,
 } from "./binding";
 import { distanceToElement } from "./distance";
 import {
@@ -51,10 +52,9 @@ import {
   type ExcalidrawElbowArrowElement,
   type NonDeletedSceneElementsMap,
 } from "./types";
-
 import { aabbForElement, pointInsideBounds } from "./bounds";
+import { getHoveredElementForBinding } from "./collision";
 
-import type { Bounds } from "./bounds";
 import type { Heading } from "./heading";
 import type {
   Arrowhead,
@@ -63,6 +63,7 @@ import type {
   FixedPointBinding,
   FixedSegment,
   NonDeletedExcalidrawElement,
+  Ordered,
 } from "./types";
 
 type GridAddress = [number, number] & { _brand: "gridaddress" };
@@ -1243,6 +1244,7 @@ const getElbowArrowData = (
   const startGlobalPoint = getGlobalPoint(
     {
       ...arrow,
+      angle: 0,
       type: "arrow",
       elbowed: true,
       points: nextPoints,
@@ -1257,6 +1259,7 @@ const getElbowArrowData = (
   const endGlobalPoint = getGlobalPoint(
     {
       ...arrow,
+      angle: 0,
       type: "arrow",
       elbowed: true,
       points: nextPoints,
@@ -1274,6 +1277,7 @@ const getElbowArrowData = (
     hoveredStartElement,
     origStartGlobalPoint,
     elementsMap,
+    options?.zoom,
   );
   const endHeading = getBindPointHeading(
     endGlobalPoint,
@@ -1281,6 +1285,7 @@ const getElbowArrowData = (
     hoveredEndElement,
     origEndGlobalPoint,
     elementsMap,
+    options?.zoom,
   );
   const startPointBounds = [
     startGlobalPoint[0] - 2,
@@ -1301,8 +1306,8 @@ const getElbowArrowData = (
         offsetFromHeading(
           startHeading,
           arrow.startArrowhead
-            ? FIXED_BINDING_DISTANCE * 6
-            : FIXED_BINDING_DISTANCE * 2,
+            ? getBindingGap(hoveredStartElement, { elbowed: true }) * 6
+            : getBindingGap(hoveredStartElement, { elbowed: true }) * 2,
           1,
         ),
       )
@@ -1314,8 +1319,8 @@ const getElbowArrowData = (
         offsetFromHeading(
           endHeading,
           arrow.endArrowhead
-            ? FIXED_BINDING_DISTANCE * 6
-            : FIXED_BINDING_DISTANCE * 2,
+            ? getBindingGap(hoveredEndElement, { elbowed: true }) * 6
+            : getBindingGap(hoveredEndElement, { elbowed: true }) * 2,
           1,
         ),
       )
@@ -1362,8 +1367,8 @@ const getElbowArrowData = (
             ? 0
             : BASE_PADDING -
                 (arrow.startArrowhead
-                  ? FIXED_BINDING_DISTANCE * 6
-                  : FIXED_BINDING_DISTANCE * 2),
+                  ? BASE_BINDING_GAP_ELBOW * 6
+                  : BASE_BINDING_GAP_ELBOW * 2),
           BASE_PADDING,
         ),
     boundsOverlap
@@ -1378,8 +1383,8 @@ const getElbowArrowData = (
             ? 0
             : BASE_PADDING -
                 (arrow.endArrowhead
-                  ? FIXED_BINDING_DISTANCE * 6
-                  : FIXED_BINDING_DISTANCE * 2),
+                  ? BASE_BINDING_GAP_ELBOW * 6
+                  : BASE_BINDING_GAP_ELBOW * 2),
           BASE_PADDING,
         ),
     boundsOverlap,
@@ -2239,6 +2244,7 @@ const getBindPointHeading = (
   hoveredElement: ExcalidrawBindableElement | null | undefined,
   origPoint: GlobalPoint,
   elementsMap: ElementsMap,
+  zoom?: AppState["zoom"],
 ): Heading =>
   getHeadingForElbowArrowSnap(
     p,
@@ -2257,21 +2263,20 @@ const getBindPointHeading = (
       ),
     origPoint,
     elementsMap,
+    zoom,
   );
 
 const getHoveredElement = (
   origPoint: GlobalPoint,
   elementsMap: NonDeletedSceneElementsMap,
-  elements: readonly NonDeletedExcalidrawElement[],
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
   zoom?: AppState["zoom"],
 ) => {
   return getHoveredElementForBinding(
-    tupleToCoors(origPoint),
+    origPoint,
     elements,
     elementsMap,
-    zoom,
-    true,
-    true,
+    (element) => maxBindingDistance_simple(zoom),
   );
 };
 

packages/element/src/flowchart.ts

@@ -7,7 +7,7 @@ import type {
   PendingExcalidrawElements,
 } from "@excalidraw/excalidraw/types";
 
-import { bindLinearElement } from "./binding";
+import { bindBindingElement } from "./binding";
 import { updateElbowArrowPoints } from "./elbowArrow";
 import {
   HEADING_DOWN,
@@ -446,8 +446,14 @@ const createBindingArrow = (
 
   const elementsMap = scene.getNonDeletedElementsMap();
 
-  bindLinearElement(bindingArrow, startBindingElement, "start", scene);
-  bindLinearElement(bindingArrow, endBindingElement, "end", scene);
+  bindBindingElement(
+    bindingArrow,
+    startBindingElement,
+    "orbit",
+    "start",
+    scene,
+  );
+  bindBindingElement(bindingArrow, endBindingElement, "orbit", "end", scene);
 
   const changedElements = new Map<string, OrderedExcalidrawElement>();
   changedElements.set(

packages/element/src/freedraw.ts

@@ -0,0 +1,546 @@
+import {
+  pointFrom,
+  pointDistance,
+  type LocalPoint,
+  vectorFromPoint,
+  vectorNormalize,
+  lineSegment,
+  type GlobalPoint,
+  type Polygon,
+  polygonFromPoints,
+} from "@excalidraw/math";
+import { debugDrawLine, debugDrawPolygon } from "@excalidraw/common";
+
+import type { ExcalidrawFreeDrawElement } from "./types";
+
+// Number of segments to approximate each semicircular cap
+const CAP_SEGMENTS = 20;
+
+// Minimum radius to avoid degenerate shapes
+const MIN_RADIUS = 0.05;
+
+// Pressure to radius multiplier (scaled by strokeWidth)
+const PRESSURE_RADIUS_MULTIPLIER = 2.0;
+
+// Minimum distance between points to avoid numerical instability
+const MIN_POINT_DISTANCE = 0.001;
+
+// Epsilon for filtering near-duplicate points in polygons
+const EPSILON = 0.01;
+
+// Simple union implementation taking advantage of the following facts:
+// - The ovoids are generated in sequence along the stroke path
+// - Each ovoid overlaps only with its immediate neighbors
+// - The ovoids are convex shapes
+
+// Therefore, we can simply stitch together the outer edges of the ovoids
+// by taking the first half of the first ovoid and the second half of the last ovoid,
+// and connecting them with the outer edges of the intermediate ovoids. The overlapping
+// ovoid caps are always the same radius at the shared points, so they align perfectly.
+// It should be easy to find the closest point to the side of the previous side segment and
+// one of the closest points on the next ovoid's start cap.
+function chainOvoidsIntoSinglePolygon<P extends LocalPoint | GlobalPoint>(
+  records: {
+    polygon: Polygon<P>;
+    firstPoint: P;
+    secondPoint: P;
+  }[],
+): Polygon<P> | null {
+  if (records.length === 0) {
+    return null;
+  }
+
+  if (records.length === 1) {
+    return records[0].polygon;
+  }
+
+  const capPointCount = CAP_SEGMENTS + 1;
+
+  const isClosedPolygon = (points: P[]) => {
+    if (points.length < 2) {
+      return false;
+    }
+    const first = points[0];
+    const last = points[points.length - 1];
+    return first[0] === last[0] && first[1] === last[1];
+  };
+
+  const openPolygon = (points: P[]) =>
+    isClosedPolygon(points) ? points.slice(0, -1) : points.slice();
+
+  const distanceSq = (a: P, b: P) => {
+    const dx = a[0] - b[0];
+    const dy = a[1] - b[1];
+    return dx * dx + dy * dy;
+  };
+
+  const distanceToSegmentSq = (p: P, a: P, b: P) => {
+    const abx = b[0] - a[0];
+    const aby = b[1] - a[1];
+    const apx = p[0] - a[0];
+    const apy = p[1] - a[1];
+    const abLenSq = abx * abx + aby * aby;
+
+    if (abLenSq === 0) {
+      return distanceSq(p, a);
+    }
+
+    const t = Math.max(0, Math.min(1, (apx * abx + apy * aby) / abLenSq));
+    const closest = pointFrom<P>(a[0] + abx * t, a[1] + aby * t);
+    return distanceSq(p, closest);
+  };
+
+  const closestIndexToSegment = (points: P[], a: P, b: P) => {
+    let bestIndex = 0;
+    let bestDistance = Number.POSITIVE_INFINITY;
+
+    for (let i = 0; i < points.length; i++) {
+      const dist = distanceToSegmentSq(points[i], a, b);
+      if (dist < bestDistance) {
+        bestDistance = dist;
+        bestIndex = i;
+      }
+    }
+
+    return bestIndex;
+  };
+
+  const pushIfDistinct = (points: P[], point: P) => {
+    if (points.length === 0) {
+      points.push(point);
+      return;
+    }
+    if (distanceSq(points[points.length - 1], point) > EPSILON * EPSILON) {
+      points.push(point);
+    }
+  };
+
+  const ovoids = records.map((record) => {
+    const open = openPolygon(record.polygon);
+
+    if (open.length < capPointCount * 2) {
+      return {
+        cap1: open,
+        cap2: [] as P[],
+        p1Right: open[0],
+        p1Left: open[open.length - 1],
+        p2Left: open[0],
+        p2Right: open[open.length - 1],
+      };
+    }
+
+    const cap1 = open.slice(0, capPointCount);
+    const cap2 = open.slice(capPointCount, capPointCount * 2);
+
+    return {
+      cap1,
+      cap2,
+      p1Right: cap1[0],
+      p1Left: cap1[cap1.length - 1],
+      p2Left: cap2[0],
+      p2Right: cap2[cap2.length - 1],
+    };
+  });
+
+  const leftChain: P[] = [];
+  const rightChain: P[] = [];
+
+  ovoids[0].cap1.forEach((point) => pushIfDistinct(leftChain, point));
+  pushIfDistinct(rightChain, ovoids[0].p1Right);
+
+  for (let i = 0; i < ovoids.length; i++) {
+    const current = ovoids[i];
+
+    pushIfDistinct(leftChain, current.p2Left);
+    pushIfDistinct(rightChain, current.p2Right);
+
+    if (i + 1 >= ovoids.length) {
+      continue;
+    }
+
+    const next = ovoids[i + 1];
+
+    const leftIndex = closestIndexToSegment(
+      next.cap1,
+      current.p1Left,
+      current.p2Left,
+    );
+
+    for (let j = leftIndex; j < next.cap1.length; j++) {
+      pushIfDistinct(leftChain, next.cap1[j]);
+    }
+
+    const rightIndex = closestIndexToSegment(
+      next.cap1,
+      current.p1Right,
+      current.p2Right,
+    );
+
+    for (let j = rightIndex; j >= 0; j--) {
+      pushIfDistinct(rightChain, next.cap1[j]);
+    }
+  }
+
+  const lastOvoid = ovoids[ovoids.length - 1];
+  lastOvoid.cap2.forEach((point) => pushIfDistinct(leftChain, point));
+
+  const rightChainReversed = rightChain.slice(0, -1).reverse();
+  const outline = filterNearDuplicates<P>([
+    ...leftChain,
+    ...rightChainReversed,
+  ]);
+
+  return polygonFromPoints<P>(outline);
+}
+
+/**
+ * Compute the radius for a point based on pressure and strokeWidth.
+ * Pressure is typically in [0, 1] range, default to 0.5 if simulating.
+ */
+function getRadiusForPressure(pressure: number, strokeWidth: number): number {
+  return Math.max(
+    MIN_RADIUS,
+    pressure * strokeWidth * PRESSURE_RADIUS_MULTIPLIER,
+  );
+}
+
+/**
+ * Generate points along a semicircular arc (dome/cap).
+ * The arc goes from startAngle to endAngle (counterclockwise).
+ *
+ * @param center - Center point of the arc
+ * @param radius - Radius of the arc
+ * @param startAngle - Start angle in radians
+ * @param endAngle - End angle in radians (counterclockwise from start)
+ * @param segments - Number of segments to divide the arc into
+ * @returns Array of points along the arc
+ */
+function generateArcPoints<P extends LocalPoint | GlobalPoint>(
+  center: LocalPoint,
+  radius: number,
+  startAngle: number,
+  endAngle: number,
+  segments: number,
+): P[] {
+  const points: P[] = [];
+  const angleStep = (endAngle - startAngle) / segments;
+
+  for (let i = 0; i <= segments; i++) {
+    const angle = startAngle + i * angleStep;
+    points.push(
+      pointFrom<P>(
+        center[0] + radius * Math.cos(angle),
+        center[1] + radius * Math.sin(angle),
+      ),
+    );
+  }
+
+  return points;
+}
+
+/**
+ * Create an ovoid shape between two consecutive points.
+ * The ovoid consists of:
+ * - A semicircular cap at the first point (facing away from point 2)
+ * - A semicircular cap at the second point (facing away from point 1)
+ * - Connecting lines (tangent lines between the two circles)
+ *
+ * @param p1 - First point
+ * @param r1 - Radius at first point (from pressure)
+ * @param p2 - Second point
+ * @param r2 - Radius at second point (from pressure)
+ * @param forcePerpendicularCap1 - Force cap1 to be perpendicular (for stroke start)
+ * @param forcePerpendicularCap2 - Force cap2 to be perpendicular (for stroke end)
+ * @returns Array of points forming the ovoid polygon
+ */
+function createOvoid<P extends LocalPoint | GlobalPoint>(
+  p1: LocalPoint,
+  r1: number,
+  p2: LocalPoint,
+  r2: number,
+  forcePerpendicularCap1: boolean = false,
+  forcePerpendicularCap2: boolean = false,
+): Polygon<P> {
+  const dist = pointDistance(p1, p2);
+
+  // If points are too close, create a circle at the midpoint
+  if (dist < MIN_POINT_DISTANCE) {
+    const avgRadius = (r1 + r2) / 2;
+    return polygonFromPoints<P>(
+      generateArcPoints(p1, avgRadius, 0, Math.PI * 2, CAP_SEGMENTS * 2),
+    );
+  }
+
+  // Direction vector from p1 to p2
+  const dirVec = vectorFromPoint(p2, p1);
+  const normalizedDir = vectorNormalize(dirVec);
+
+  // Calculate the angle of the direction vector
+  const baseAngle = Math.atan2(normalizedDir[1], normalizedDir[0]);
+
+  // For connecting the circles with tangent lines when radii differ,
+  // we need to compute the tangent points
+  // When r1 != r2, the tangent lines are not perpendicular to the center line
+
+  // Tangent angle offset (when radii differ)
+  const radiusDiff = r1 - r2;
+  const tangentAngleOffset =
+    dist > Math.abs(radiusDiff) ? Math.asin(radiusDiff / dist) : 0;
+
+  // Compute tangent points on each circle
+  // The perpendicular offset needs to be adjusted for the tangent angle
+  const tangentPerpAngle = baseAngle + Math.PI / 2 + tangentAngleOffset;
+  const purePerpAngle = baseAngle + Math.PI / 2;
+
+  // Cap at p1 (semicircle facing AWAY from p2, i.e., toward baseAngle + PI)
+  // Use perpendicular cap for stroke start, otherwise use tangent-adjusted
+  const p1PerpAngle = forcePerpendicularCap1 ? purePerpAngle : tangentPerpAngle;
+  const p1RightAngle = p1PerpAngle;
+  const p1LeftAngle = p1PerpAngle + Math.PI;
+  const cap1Points = generateArcPoints<P>(
+    p1,
+    r1,
+    p1RightAngle,
+    p1LeftAngle,
+    CAP_SEGMENTS,
+  );
+
+  // Cap at p2 (semicircle facing AWAY from p1, i.e., toward baseAngle)
+  // Use perpendicular cap for stroke end, otherwise use tangent-adjusted
+  const p2PerpAngle = forcePerpendicularCap2 ? purePerpAngle : tangentPerpAngle;
+  const p2LeftAngle = p2PerpAngle + Math.PI;
+  const p2RightAngle = p2LeftAngle + Math.PI;
+  const cap2Points = generateArcPoints<P>(
+    p2,
+    r2,
+    p2LeftAngle,
+    p2RightAngle,
+    CAP_SEGMENTS,
+  );
+
+  // Assemble the ovoid polygon:
+  // cap1 goes around the back of p1, cap2 goes around the front of p2
+  // The arc endpoints naturally connect with the tangent lines
+  const ovoidPoints: P[] = [
+    ...cap1Points, // p1's back cap
+    ...cap2Points, // p2's front cap
+  ];
+
+  // Filter out near-duplicate consecutive points to avoid numerical issues
+  return polygonFromPoints<P>(filterNearDuplicates<P>(ovoidPoints));
+}
+
+/**
+ * Filter out consecutive points that are too close together.
+ * This prevents numerical instability in polygon boolean operations.
+ */
+function filterNearDuplicates<P extends LocalPoint | GlobalPoint>(
+  points: P[],
+): P[] {
+  if (points.length < 2) {
+    return points;
+  }
+
+  const filtered: P[] = [points[0]];
+
+  for (let i = 1; i < points.length; i++) {
+    const prev = filtered[filtered.length - 1];
+    const curr = points[i];
+    const dx = curr[0] - prev[0];
+    const dy = curr[1] - prev[1];
+    const distSq = dx * dx + dy * dy;
+
+    // Only add if far enough from previous point
+    if (distSq > EPSILON * EPSILON) {
+      filtered.push(curr);
+    }
+  }
+
+  // Also check if last point is too close to first point
+  if (filtered.length > 2) {
+    const first = filtered[0];
+    const last = filtered[filtered.length - 1];
+    const dx = last[0] - first[0];
+    const dy = last[1] - first[1];
+    const distSq = dx * dx + dy * dy;
+
+    if (distSq < EPSILON * EPSILON) {
+      filtered.pop();
+    }
+  }
+
+  return filtered.length >= 3 ? filtered : points;
+}
+
+/**
+ * Generate the outline of a freedraw element using the ovoid-union approach.
+ *
+ * This creates ovoid shapes between each consecutive pair of points,
+ * where each ovoid is defined by:
+ * - Semicircular caps at each point (radius based on pressure)
+ * - Connecting tangent lines between the caps
+ *
+ * All ovoids are then unioned together to form the final outline.
+ *
+ * @param element - The freedraw element to generate outline for
+ * @returns Array of [x, y] points representing the outline polygon
+ */
+export function generateFreeDrawOvoidOutline(
+  element: ExcalidrawFreeDrawElement,
+): [number, number][] {
+  const { x, y, points, pressures, simulatePressure, strokeWidth } = element;
+
+  // Debug draw the raw segments from the freedraw element points
+  const colors = ["red", "green", "blue", "orange", "purple"];
+
+  points.forEach((pt, i) => {
+    if (i === points.length - 1) {
+      return;
+    }
+    debugDrawLine(
+      lineSegment(
+        pointFrom<GlobalPoint>(x + pt[0], y + pt[1]),
+        pointFrom<GlobalPoint>(x + points[i + 1][0], y + points[i + 1][1]),
+      ),
+      {
+        color: colors[i % colors.length],
+        permanent: true,
+      },
+    );
+  });
+
+  if (points.length === 0) {
+    return [];
+  }
+
+  // Single point: just return a circle
+  if (points.length === 1) {
+    const pressure = simulatePressure ? 0.5 : pressures[0] ?? 0.5;
+    const radius = getRadiusForPressure(pressure, strokeWidth);
+    const circlePoints = generateArcPoints(
+      points[0] as LocalPoint,
+      radius,
+      0,
+      Math.PI * 2,
+      CAP_SEGMENTS * 2,
+    );
+    return circlePoints.map((p) => [p[0], p[1]]);
+  }
+
+  // Generate ovoids for each consecutive pair of points
+  const ovoids: Polygon<LocalPoint>[] = [];
+
+  for (let i = 0; i < points.length - 1; i++) {
+    const p1 = points[i] as LocalPoint;
+    const p2 = points[i + 1] as LocalPoint;
+
+    // Get pressures (use 0.5 as default when simulating)
+    const pressure1 = simulatePressure ? 0.5 : pressures[i] ?? 0.5;
+    const pressure2 = simulatePressure ? 0.5 : pressures[i + 1] ?? 0.5;
+
+    const r1 = getRadiusForPressure(pressure1, strokeWidth);
+    const r2 = getRadiusForPressure(pressure2, strokeWidth);
+
+    // Force perpendicular caps at stroke endpoints
+    const isFirstSegment = i === 0;
+    const isLastSegment = i === points.length - 2;
+
+    const ovoidPoints = createOvoid<LocalPoint>(
+      p1,
+      r1,
+      p2,
+      r2,
+      isFirstSegment, // Force perpendicular cap at stroke start
+      isLastSegment, // Force perpendicular cap at stroke end
+    );
+
+    // Draw the ovoid with different colors for debugging
+    debugDrawPolygon(
+      ovoidPoints.map((p) => pointFrom<GlobalPoint>(x + p[0], y + p[1])),
+      {
+        color: colors[i % colors.length],
+        permanent: true,
+      },
+    );
+
+    if (ovoidPoints.length >= 3) {
+      ovoids.push(ovoidPoints);
+    }
+  }
+
+  if (ovoids.length === 0) {
+    return [];
+  }
+
+  // Union all ovoids together
+  const result = chainOvoidsIntoSinglePolygon<LocalPoint>(
+    ovoids.map((poly, i) => ({
+      polygon: poly,
+      firstPoint: points[i],
+      secondPoint: points[i + 1],
+    })),
+  );
+
+  if (result === null) {
+    return [];
+  }
+
+  if (result === null) {
+    return [];
+  }
+
+  // Return the first (outer) polygon
+  return result;
+}
+
+/**
+ * Convert the ovoid outline to an SVG path string. Uses quadratic curves
+ * for smoothing.
+ */
+export function generateFreeDrawOvoidSvgPath(
+  element: ExcalidrawFreeDrawElement,
+): string {
+  const points = generateFreeDrawOvoidOutline(element);
+
+  if (points.length === 0) {
+    console.warn("No outline points generated for freedraw element");
+    return "";
+  }
+
+  if (points.length < 3) {
+    console.warn("Not enough outline points to form a closed path");
+    return "";
+  }
+
+  // Use a similar approach to the original getSvgPathFromStroke
+  // but with the ovoid-generated points
+  const med = (a: number[], b: number[]) => [
+    (a[0] + b[0]) / 2,
+    (a[1] + b[1]) / 2,
+  ];
+
+  const pathData = points
+    // Build a closed, smoothed SVG path from the outline polygon
+    .reduce(
+      (acc: (string | number[])[], point, i, arr) => {
+        if (i === points.length - 1) {
+          // For the last point, add a line-to ("L") back to the first point and close
+          // ("Z").
+          acc.push(point, med(point, arr[0]), "L", arr[0], "Z");
+        } else {
+          // Use a single quadratic command ("Q") and then emit point + midpoint pairs
+          // so each segment curves through the current point toward the midpoint of
+          // the next segment.
+          acc.push(point, med(point, arr[i + 1]));
+        }
+        return acc;
+      },
+      // Start with a move-to ("M") to the first point.
+      ["M", points[0], "Q"],
+    )
+    .join(" ")
+    // Trim excessive float precision to keep the path string compact/stable.
+    .replace(/(\s?[A-Z]?,?-?[0-9]*\.[0-9]{0,2})(([0-9]|e|-)*)/g, "$1");
+
+  return pathData;
+}

packages/element/src/heading.ts

@@ -1,4 +1,9 @@
-import { invariant, isDevEnv, isTestEnv } from "@excalidraw/common";
+import {
+  invariant,
+  isDevEnv,
+  isTestEnv,
+  type Bounds,
+} from "@excalidraw/common";
 
 import {
   pointFrom,
@@ -19,7 +24,7 @@ import type {
   Vector,
 } from "@excalidraw/math";
 
-import { getCenterForBounds, type Bounds } from "./bounds";
+import { getCenterForBounds } from "./bounds";
 
 import type { ExcalidrawBindableElement } from "./types";
 

packages/element/src/index.ts

@@ -1,7 +1,6 @@
 import { toIterable } from "@excalidraw/common";
 
 import { isInvisiblySmallElement } from "./sizeHelpers";
-import { isLinearElementType } from "./typeChecks";
 
 import type {
   ExcalidrawElement,
@@ -55,27 +54,6 @@ 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";
@@ -114,6 +92,7 @@ export * from "./store";
 export * from "./textElement";
 export * from "./textMeasurements";
 export * from "./textWrapping";
+export * from "./transform";
 export * from "./transformHandles";
 export * from "./typeChecks";
 export * from "./utils";

packages/element/src/mutateElement.ts

@@ -46,16 +46,13 @@ export const mutateElement = <TElement extends Mutable<ExcalidrawElement>>(
 
   // 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;
+  const { points, fixedSegments, 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
+      typeof fixedSegments !== "undefined") // segment fixing
   ) {
     updates = {
       ...updates,

packages/element/src/newElement.ts

@@ -452,7 +452,6 @@ export const newFreeDrawElement = (
     points: opts.points || [],
     pressures: opts.pressures || [],
     simulatePressure: opts.simulatePressure,
-    lastCommittedPoint: null,
   };
 };
 
@@ -466,7 +465,7 @@ export const newLinearElement = (
   const element = {
     ..._newElementBase<ExcalidrawLinearElement>(opts.type, opts),
     points: opts.points || [],
-    lastCommittedPoint: null,
+
     startBinding: null,
     endBinding: null,
     startArrowhead: null,
@@ -501,7 +500,6 @@ export const newArrowElement = <T extends boolean>(
     return {
       ..._newElementBase<ExcalidrawElbowArrowElement>(opts.type, opts),
       points: opts.points || [],
-      lastCommittedPoint: null,
       startBinding: null,
       endBinding: null,
       startArrowhead: opts.startArrowhead || null,
@@ -516,7 +514,6 @@ export const newArrowElement = <T extends boolean>(
   return {
     ..._newElementBase<ExcalidrawArrowElement>(opts.type, opts),
     points: opts.points || [],
-    lastCommittedPoint: null,
     startBinding: null,
     endBinding: null,
     startArrowhead: opts.startArrowhead || null,

packages/element/src/renderElement.ts

@@ -1,5 +1,4 @@
 import rough from "roughjs/bin/rough";
-import { getStroke } from "perfect-freehand";
 
 import {
   type GlobalPoint,
@@ -22,6 +21,7 @@ import {
   isRTL,
   getVerticalOffset,
   invariant,
+  applyDarkModeFilter,
 } from "@excalidraw/common";
 
 import type {
@@ -78,16 +78,8 @@ import type {
   ElementsMap,
 } from "./types";
 
-import type { StrokeOptions } from "perfect-freehand";
 import type { RoughCanvas } from "roughjs/bin/canvas";
 
-// using a stronger invert (100% vs our regular 93%) and saturate
-// as a temp hack to make images in dark theme look closer to original
-// color scheme (it's still not quite there and the colors look slightly
-// desatured, alas...)
-export const IMAGE_INVERT_FILTER =
-  "invert(100%) hue-rotate(180deg) saturate(1.25)";
-
 const isPendingImageElement = (
   element: ExcalidrawElement,
   renderConfig: StaticCanvasRenderConfig,
@@ -95,19 +87,6 @@ const isPendingImageElement = (
   isInitializedImageElement(element) &&
   !renderConfig.imageCache.has(element.fileId);
 
-const shouldResetImageFilter = (
-  element: ExcalidrawElement,
-  renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
-) => {
-  return (
-    appState.theme === THEME.DARK &&
-    isInitializedImageElement(element) &&
-    !isPendingImageElement(element, renderConfig) &&
-    renderConfig.imageCache.get(element.fileId)?.mimeType !== MIME_TYPES.svg
-  );
-};
-
 const getCanvasPadding = (element: ExcalidrawElement) => {
   switch (element.type) {
     case "freedraw":
@@ -225,7 +204,7 @@ const generateElementCanvas = (
   elementsMap: NonDeletedSceneElementsMap,
   zoom: Zoom,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ): ExcalidrawElementWithCanvas | null => {
   const canvas = document.createElement("canvas");
   const context = canvas.getContext("2d")!;
@@ -272,12 +251,7 @@ const generateElementCanvas = (
 
   const rc = rough.canvas(canvas);
 
-  // in dark theme, revert the image color filter
-  if (shouldResetImageFilter(element, renderConfig, appState)) {
-    context.filter = IMAGE_INVERT_FILTER;
-  }
-
-  drawElementOnCanvas(element, rc, context, renderConfig, appState);
+  drawElementOnCanvas(element, rc, context, renderConfig);
 
   context.restore();
 
@@ -412,7 +386,6 @@ const drawElementOnCanvas = (
   rc: RoughCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
 ) => {
   switch (element.type) {
     case "rectangle":
@@ -422,7 +395,8 @@ const drawElementOnCanvas = (
     case "ellipse": {
       context.lineJoin = "round";
       context.lineCap = "round";
-      rc.draw(ShapeCache.get(element)!);
+
+      rc.draw(ShapeCache.generateElementShape(element, renderConfig));
       break;
     }
     case "arrow":
@@ -430,26 +404,31 @@ const drawElementOnCanvas = (
       context.lineJoin = "round";
       context.lineCap = "round";
 
-      ShapeCache.get(element)!.forEach((shape) => {
-        rc.draw(shape);
-      });
+      ShapeCache.generateElementShape(element, renderConfig).forEach(
+        (shape) => {
+          rc.draw(shape);
+        },
+      );
       break;
     }
     case "freedraw": {
       // Draw directly to canvas
       context.save();
-      context.fillStyle = element.strokeColor;
 
-      const path = getFreeDrawPath2D(element) as Path2D;
-      const fillShape = ShapeCache.get(element);
+      const shapes = ShapeCache.generateElementShape(element, renderConfig);
 
-      if (fillShape) {
-        rc.draw(fillShape);
+      for (const shape of shapes) {
+        if (typeof shape === "string") {
+          context.fillStyle =
+            renderConfig.theme === THEME.DARK
+              ? applyDarkModeFilter(element.strokeColor)
+              : element.strokeColor;
+          context.fill(new Path2D(shape));
+        } else {
+          rc.draw(shape);
+        }
       }
 
-      context.fillStyle = element.strokeColor;
-      context.fill(path);
-
       context.restore();
       break;
     }
@@ -507,7 +486,10 @@ const drawElementOnCanvas = (
         context.canvas.setAttribute("dir", rtl ? "rtl" : "ltr");
         context.save();
         context.font = getFontString(element);
-        context.fillStyle = element.strokeColor;
+        context.fillStyle =
+          renderConfig.theme === THEME.DARK
+            ? applyDarkModeFilter(element.strokeColor)
+            : element.strokeColor;
         context.textAlign = element.textAlign as CanvasTextAlign;
 
         // Canvas does not support multiline text by default
@@ -558,7 +540,7 @@ const generateElementWithCanvas = (
   element: NonDeletedExcalidrawElement,
   elementsMap: NonDeletedSceneElementsMap,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ) => {
   const zoom: Zoom = renderConfig
     ? appState.zoom
@@ -615,7 +597,7 @@ const drawElementFromCanvas = (
   elementWithCanvas: ExcalidrawElementWithCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
   allElementsMap: NonDeletedSceneElementsMap,
 ) => {
   const element = elementWithCanvas.element;
@@ -733,7 +715,7 @@ export const renderElement = (
   rc: RoughCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ) => {
   const reduceAlphaForSelection =
     appState.openDialog?.name === "elementLinkSelector" &&
@@ -760,12 +742,17 @@ export const renderElement = (
         context.fillStyle = "rgba(0, 0, 200, 0.04)";
 
         context.lineWidth = FRAME_STYLE.strokeWidth / appState.zoom.value;
-        context.strokeStyle = FRAME_STYLE.strokeColor;
+        context.strokeStyle =
+          appState.theme === THEME.DARK
+            ? applyDarkModeFilter(FRAME_STYLE.strokeColor)
+            : FRAME_STYLE.strokeColor;
 
         // TODO change later to only affect AI frames
         if (isMagicFrameElement(element)) {
           context.strokeStyle =
-            appState.theme === THEME.LIGHT ? "#7affd7" : "#1d8264";
+            appState.theme === THEME.LIGHT
+              ? "#7affd7"
+              : applyDarkModeFilter("#1d8264");
         }
 
         if (FRAME_STYLE.radius && context.roundRect) {
@@ -788,11 +775,6 @@ export const renderElement = (
       break;
     }
     case "freedraw": {
-      // TODO investigate if we can do this in situ. Right now we need to call
-      // beforehand because math helpers (such as getElementAbsoluteCoords)
-      // rely on existing shapes
-      ShapeCache.generateElementShape(element, null);
-
       if (renderConfig.isExporting) {
         const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
         const cx = (x1 + x2) / 2 + appState.scrollX;
@@ -803,7 +785,7 @@ export const renderElement = (
         context.translate(cx, cy);
         context.rotate(element.angle);
         context.translate(-shiftX, -shiftY);
-        drawElementOnCanvas(element, rc, context, renderConfig, appState);
+        drawElementOnCanvas(element, rc, context, renderConfig);
         context.restore();
       } else {
         const elementWithCanvas = generateElementWithCanvas(
@@ -836,10 +818,6 @@ export const renderElement = (
     case "text":
     case "iframe":
     case "embeddable": {
-      // TODO investigate if we can do this in situ. Right now we need to call
-      // beforehand because math helpers (such as getElementAbsoluteCoords)
-      // rely on existing shapes
-      ShapeCache.generateElementShape(element, renderConfig);
       if (renderConfig.isExporting) {
         const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
         const cx = (x1 + x2) / 2 + appState.scrollX;
@@ -862,9 +840,6 @@ export const renderElement = (
         context.save();
         context.translate(cx, cy);
 
-        if (shouldResetImageFilter(element, renderConfig, appState)) {
-          context.filter = "none";
-        }
         const boundTextElement = getBoundTextElement(element, elementsMap);
 
         if (isArrowElement(element) && boundTextElement) {
@@ -896,13 +871,7 @@ export const renderElement = (
 
           tempCanvasContext.translate(-shiftX, -shiftY);
 
-          drawElementOnCanvas(
-            element,
-            tempRc,
-            tempCanvasContext,
-            renderConfig,
-            appState,
-          );
+          drawElementOnCanvas(element, tempRc, tempCanvasContext, renderConfig);
 
           tempCanvasContext.translate(shiftX, shiftY);
 
@@ -941,7 +910,7 @@ export const renderElement = (
           }
 
           context.translate(-shiftX, -shiftY);
-          drawElementOnCanvas(element, rc, context, renderConfig, appState);
+          drawElementOnCanvas(element, rc, context, renderConfig);
         }
 
         context.restore();
@@ -1033,23 +1002,6 @@ export const renderElement = (
   context.globalAlpha = 1;
 };
 
-export const pathsCache = new WeakMap<ExcalidrawFreeDrawElement, Path2D>([]);
-
-export function generateFreeDrawShape(element: ExcalidrawFreeDrawElement) {
-  const svgPathData = getFreeDrawSvgPath(element);
-  const path = new Path2D(svgPathData);
-  pathsCache.set(element, path);
-  return path;
-}
-
-export function getFreeDrawPath2D(element: ExcalidrawFreeDrawElement) {
-  return pathsCache.get(element);
-}
-
-export function getFreeDrawSvgPath(element: ExcalidrawFreeDrawElement) {
-  return getSvgPathFromStroke(getFreedrawOutlinePoints(element));
-}
-
 export function getFreedrawOutlineAsSegments(
   element: ExcalidrawFreeDrawElement,
   points: [number, number][],
@@ -1105,57 +1057,3 @@ export function getFreedrawOutlineAsSegments(
     ],
   );
 }
-
-export function getFreedrawOutlinePoints(element: ExcalidrawFreeDrawElement) {
-  // If input points are empty (should they ever be?) return a dot
-  const inputPoints = element.simulatePressure
-    ? element.points
-    : element.points.length
-    ? element.points.map(([x, y], i) => [x, y, element.pressures[i]])
-    : [[0, 0, 0.5]];
-
-  // Consider changing the options for simulated pressure vs real pressure
-  const options: StrokeOptions = {
-    simulatePressure: element.simulatePressure,
-    size: element.strokeWidth * 4.25,
-    thinning: 0.6,
-    smoothing: 0.5,
-    streamline: 0.5,
-    easing: (t) => Math.sin((t * Math.PI) / 2), // https://easings.net/#easeOutSine
-    last: !!element.lastCommittedPoint, // LastCommittedPoint is added on pointerup
-  };
-
-  return getStroke(inputPoints as number[][], options) as [number, number][];
-}
-
-function med(A: number[], B: number[]) {
-  return [(A[0] + B[0]) / 2, (A[1] + B[1]) / 2];
-}
-
-// Trim SVG path data so number are each two decimal points. This
-// improves SVG exports, and prevents rendering errors on points
-// with long decimals.
-const TO_FIXED_PRECISION = /(\s?[A-Z]?,?-?[0-9]*\.[0-9]{0,2})(([0-9]|e|-)*)/g;
-
-function getSvgPathFromStroke(points: number[][]): string {
-  if (!points.length) {
-    return "";
-  }
-
-  const max = points.length - 1;
-
-  return points
-    .reduce(
-      (acc, point, i, arr) => {
-        if (i === max) {
-          acc.push(point, med(point, arr[0]), "L", arr[0], "Z");
-        } else {
-          acc.push(point, med(point, arr[i + 1]));
-        }
-        return acc;
-      },
-      ["M", points[0], "Q"],
-    )
-    .join(" ")
-    .replace(TO_FIXED_PRECISION, "$1");
-}

packages/element/src/resizeElements.ts

@@ -20,7 +20,11 @@ import type { PointerDownState } from "@excalidraw/excalidraw/types";
 
 import type { Mutable } from "@excalidraw/common/utility-types";
 
-import { getArrowLocalFixedPoints, updateBoundElements } from "./binding";
+import {
+  getArrowLocalFixedPoints,
+  unbindBindingElement,
+  updateBoundElements,
+} from "./binding";
 import {
   getElementAbsoluteCoords,
   getCommonBounds,
@@ -46,6 +50,7 @@ import {
 import { wrapText } from "./textWrapping";
 import {
   isArrowElement,
+  isBindingElement,
   isBoundToContainer,
   isElbowArrow,
   isFrameLikeElement,
@@ -74,7 +79,9 @@ import type {
   ExcalidrawImageElement,
   ElementsMap,
   ExcalidrawElbowArrowElement,
+  ExcalidrawArrowElement,
 } from "./types";
+import type { ElementUpdate } from "./mutateElement";
 
 // Returns true when transform (resizing/rotation) happened
 export const transformElements = (
@@ -220,7 +227,25 @@ const rotateSingleElement = (
   }
   const boundTextElementId = getBoundTextElementId(element);
 
-  scene.mutateElement(element, { angle });
+  let update: ElementUpdate<NonDeletedExcalidrawElement> = {
+    angle,
+  };
+
+  if (isBindingElement(element)) {
+    update = {
+      ...update,
+    } as ElementUpdate<ExcalidrawArrowElement>;
+
+    if (element.startBinding) {
+      unbindBindingElement(element, "start", scene);
+    }
+    if (element.endBinding) {
+      unbindBindingElement(element, "end", scene);
+    }
+  }
+
+  scene.mutateElement(element, update);
+
   if (boundTextElementId) {
     const textElement =
       scene.getElement<ExcalidrawTextElementWithContainer>(boundTextElementId);
@@ -394,6 +419,11 @@ const rotateMultipleElements = (
     centerAngle -= centerAngle % SHIFT_LOCKING_ANGLE;
   }
 
+  const rotatedElementsMap = new Map<
+    ExcalidrawElement["id"],
+    NonDeletedExcalidrawElement
+  >(elements.map((element) => [element.id, element]));
+
   for (const element of elements) {
     if (!isFrameLikeElement(element)) {
       const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
@@ -424,6 +454,19 @@ const rotateMultipleElements = (
         simultaneouslyUpdated: elements,
       });
 
+      if (isBindingElement(element)) {
+        if (element.startBinding) {
+          if (!rotatedElementsMap.has(element.startBinding.elementId)) {
+            unbindBindingElement(element, "start", scene);
+          }
+        }
+        if (element.endBinding) {
+          if (!rotatedElementsMap.has(element.endBinding.elementId)) {
+            unbindBindingElement(element, "end", scene);
+          }
+        }
+      }
+
       const boundText = getBoundTextElement(element, elementsMap);
       if (boundText && !isArrowElement(element)) {
         const { x, y } = computeBoundTextPosition(
@@ -835,13 +878,32 @@ export const resizeSingleElement = (
     Number.isFinite(newOrigin.x) &&
     Number.isFinite(newOrigin.y)
   ) {
-    const updates = {
+    let updates: ElementUpdate<ExcalidrawElement> = {
       ...newOrigin,
       width: Math.abs(nextWidth),
       height: Math.abs(nextHeight),
       ...rescaledPoints,
     };
 
+    if (isBindingElement(latestElement)) {
+      if (latestElement.startBinding) {
+        updates = {
+          ...updates,
+        } as ElementUpdate<ExcalidrawArrowElement>;
+
+        if (latestElement.startBinding) {
+          unbindBindingElement(latestElement, "start", scene);
+        }
+      }
+
+      if (latestElement.endBinding) {
+        updates = {
+          ...updates,
+          endBinding: null,
+        } as ElementUpdate<ExcalidrawArrowElement>;
+      }
+    }
+
     scene.mutateElement(latestElement, updates, {
       informMutation: shouldInformMutation,
       isDragging: false,
@@ -859,10 +921,7 @@ export const resizeSingleElement = (
       shouldMaintainAspectRatio,
     );
 
-    updateBoundElements(latestElement, scene, {
-      // TODO: confirm with MARK if this actually makes sense
-      newSize: { width: nextWidth, height: nextHeight },
-    });
+    updateBoundElements(latestElement, scene);
   }
 };
 
@@ -1396,20 +1455,36 @@ export const resizeMultipleElements = (
     }
 
     const elementsToUpdate = elementsAndUpdates.map(({ element }) => element);
+    const resizedElementsMap = new Map<
+      ExcalidrawElement["id"],
+      NonDeletedExcalidrawElement
+    >(elementsAndUpdates.map(({ element }) => [element.id, element]));
 
     for (const {
       element,
       update: { boundTextFontSize, ...update },
     } of elementsAndUpdates) {
-      const { width, height, angle } = update;
+      const { angle } = update;
 
       scene.mutateElement(element, update);
 
       updateBoundElements(element, scene, {
         simultaneouslyUpdated: elementsToUpdate,
-        newSize: { width, height },
       });
 
+      if (isBindingElement(element)) {
+        if (element.startBinding) {
+          if (!resizedElementsMap.has(element.startBinding.elementId)) {
+            unbindBindingElement(element, "start", scene);
+          }
+        }
+        if (element.endBinding) {
+          if (!resizedElementsMap.has(element.endBinding.elementId)) {
+            unbindBindingElement(element, "end", scene);
+          }
+        }
+      }
+
       const boundTextElement = getBoundTextElement(element, elementsMap);
       if (boundTextElement && boundTextFontSize) {
         scene.mutateElement(boundTextElement, {

packages/element/src/resizeTest.ts

@@ -13,6 +13,7 @@ import {
 import type { GlobalPoint, LineSegment, LocalPoint } from "@excalidraw/math";
 
 import type { AppState, Zoom } from "@excalidraw/excalidraw/types";
+import type { Bounds } from "@excalidraw/common";
 
 import { getElementAbsoluteCoords } from "./bounds";
 import {
@@ -23,7 +24,6 @@ import {
 } from "./transformHandles";
 import { isImageElement, isLinearElement } from "./typeChecks";
 
-import type { Bounds } from "./bounds";
 import type {
   TransformHandleType,
   TransformHandle,

packages/element/src/shape.ts

@@ -1,4 +1,5 @@
 import { simplify } from "points-on-curve";
+import { getStroke } from "perfect-freehand";
 
 import {
   type GeometricShape,
@@ -17,10 +18,12 @@ import {
 } from "@excalidraw/math";
 import {
   ROUGHNESS,
+  THEME,
   isTransparent,
   assertNever,
   COLOR_PALETTE,
   LINE_POLYGON_POINT_MERGE_DISTANCE,
+  applyDarkModeFilter,
 } from "@excalidraw/common";
 
 import { RoughGenerator } from "roughjs/bin/generator";
@@ -36,6 +39,7 @@ import type {
 import type {
   ElementShape,
   ElementShapes,
+  SVGPathString,
 } from "@excalidraw/excalidraw/scene/types";
 
 import { elementWithCanvasCache } from "./renderElement";
@@ -52,7 +56,6 @@ import { getCornerRadius, isPathALoop } from "./utils";
 import { headingForPointIsHorizontal } from "./heading";
 
 import { canChangeRoundness } from "./comparisons";
-import { generateFreeDrawShape } from "./renderElement";
 import {
   getArrowheadPoints,
   getCenterForBounds,
@@ -60,6 +63,7 @@ import {
   getElementAbsoluteCoords,
 } from "./bounds";
 import { shouldTestInside } from "./collision";
+import { generateFreeDrawOvoidSvgPath } from "./freedraw";
 
 import type {
   ExcalidrawElement,
@@ -75,31 +79,38 @@ import type {
 import type { Drawable, Options } from "roughjs/bin/core";
 import type { Point as RoughPoint } from "roughjs/bin/geometry";
 
+// Toggle between old (perfect-freehand) and new (ovoid-union) freedraw rendering
+// Set to true to use the new ovoid-based implementation
+export const USE_NEW_FREEDRAW_RENDERER = true;
+
 export class ShapeCache {
   private static rg = new RoughGenerator();
-  private static cache = new WeakMap<ExcalidrawElement, ElementShape>();
+  private static cache = new WeakMap<
+    ExcalidrawElement,
+    { shape: ElementShape; theme: AppState["theme"] }
+  >();
 
   /**
    * Retrieves shape from cache if available. Use this only if shape
    * is optional and you have a fallback in case it's not cached.
    */
-  public static get = <T extends ExcalidrawElement>(element: T) => {
-    return ShapeCache.cache.get(
-      element,
-    ) as T["type"] extends keyof ElementShapes
-      ? ElementShapes[T["type"]] | undefined
-      : ElementShape | undefined;
+  public static get = <T extends ExcalidrawElement>(
+    element: T,
+    theme: AppState["theme"] | null,
+  ) => {
+    const cached = ShapeCache.cache.get(element);
+    if (cached && (theme === null || cached.theme === theme)) {
+      return cached.shape as T["type"] extends keyof ElementShapes
+        ? ElementShapes[T["type"]] | undefined
+        : ElementShape | undefined;
+    }
+    return undefined;
   };
 
-  public static set = <T extends ExcalidrawElement>(
-    element: T,
-    shape: T["type"] extends keyof ElementShapes
-      ? ElementShapes[T["type"]]
-      : Drawable,
-  ) => ShapeCache.cache.set(element, shape);
-
-  public static delete = (element: ExcalidrawElement) =>
+  public static delete = (element: ExcalidrawElement) => {
     ShapeCache.cache.delete(element);
+    elementWithCanvasCache.delete(element);
+  };
 
   public static destroy = () => {
     ShapeCache.cache = new WeakMap();
@@ -117,12 +128,13 @@ export class ShapeCache {
       isExporting: boolean;
       canvasBackgroundColor: AppState["viewBackgroundColor"];
       embedsValidationStatus: EmbedsValidationStatus;
+      theme: AppState["theme"];
     } | null,
   ) => {
     // when exporting, always regenerated to guarantee the latest shape
     const cachedShape = renderConfig?.isExporting
       ? undefined
-      : ShapeCache.get(element);
+      : ShapeCache.get(element, renderConfig ? renderConfig.theme : null);
 
     // `null` indicates no rc shape applicable for this element type,
     // but it's considered a valid cache value (= do not regenerate)
@@ -132,19 +144,25 @@ export class ShapeCache {
 
     elementWithCanvasCache.delete(element);
 
-    const shape = generateElementShape(
+    const shape = _generateElementShape(
       element,
       ShapeCache.rg,
       renderConfig || {
         isExporting: false,
         canvasBackgroundColor: COLOR_PALETTE.white,
         embedsValidationStatus: null,
+        theme: THEME.LIGHT,
       },
     ) as T["type"] extends keyof ElementShapes
       ? ElementShapes[T["type"]]
       : Drawable | null;
 
-    ShapeCache.cache.set(element, shape);
+    if (!renderConfig?.isExporting) {
+      ShapeCache.cache.set(element, {
+        shape,
+        theme: renderConfig?.theme || THEME.LIGHT,
+      });
+    }
 
     return shape;
   };
@@ -180,6 +198,7 @@ function adjustRoughness(element: ExcalidrawElement): number {
 export const generateRoughOptions = (
   element: ExcalidrawElement,
   continuousPath = false,
+  isDarkMode: boolean = false,
 ): Options => {
   const options: Options = {
     seed: element.seed,
@@ -204,7 +223,9 @@ export const generateRoughOptions = (
     fillWeight: element.strokeWidth / 2,
     hachureGap: element.strokeWidth * 4,
     roughness: adjustRoughness(element),
-    stroke: element.strokeColor,
+    stroke: isDarkMode
+      ? applyDarkModeFilter(element.strokeColor)
+      : element.strokeColor,
     preserveVertices:
       continuousPath || element.roughness < ROUGHNESS.cartoonist,
   };
@@ -218,6 +239,8 @@ export const generateRoughOptions = (
       options.fillStyle = element.fillStyle;
       options.fill = isTransparent(element.backgroundColor)
         ? undefined
+        : isDarkMode
+        ? applyDarkModeFilter(element.backgroundColor)
         : element.backgroundColor;
       if (element.type === "ellipse") {
         options.curveFitting = 1;
@@ -231,6 +254,8 @@ export const generateRoughOptions = (
         options.fill =
           element.backgroundColor === "transparent"
             ? undefined
+            : isDarkMode
+            ? applyDarkModeFilter(element.backgroundColor)
             : element.backgroundColor;
       }
       return options;
@@ -284,6 +309,7 @@ const getArrowheadShapes = (
   generator: RoughGenerator,
   options: Options,
   canvasBackgroundColor: string,
+  isDarkMode: boolean,
 ) => {
   const arrowheadPoints = getArrowheadPoints(
     element,
@@ -309,6 +335,10 @@ const getArrowheadShapes = (
     return [generator.line(x3, y3, x4, y4, options)];
   };
 
+  const strokeColor = isDarkMode
+    ? applyDarkModeFilter(element.strokeColor)
+    : element.strokeColor;
+
   switch (arrowhead) {
     case "dot":
     case "circle":
@@ -324,10 +354,10 @@ const getArrowheadShapes = (
           fill:
             arrowhead === "circle_outline"
               ? canvasBackgroundColor
-              : element.strokeColor,
+              : strokeColor,
 
           fillStyle: "solid",
-          stroke: element.strokeColor,
+          stroke: strokeColor,
           roughness: Math.min(0.5, options.roughness || 0),
         }),
       ];
@@ -352,7 +382,7 @@ const getArrowheadShapes = (
             fill:
               arrowhead === "triangle_outline"
                 ? canvasBackgroundColor
-                : element.strokeColor,
+                : strokeColor,
             fillStyle: "solid",
             roughness: Math.min(1, options.roughness || 0),
           },
@@ -380,7 +410,7 @@ const getArrowheadShapes = (
             fill:
               arrowhead === "diamond_outline"
                 ? canvasBackgroundColor
-                : element.strokeColor,
+                : strokeColor,
             fillStyle: "solid",
             roughness: Math.min(1, options.roughness || 0),
           },
@@ -602,19 +632,22 @@ export const generateLinearCollisionShape = (
  *
  * @private
  */
-const generateElementShape = (
+const _generateElementShape = (
   element: Exclude<NonDeletedExcalidrawElement, ExcalidrawSelectionElement>,
   generator: RoughGenerator,
   {
     isExporting,
     canvasBackgroundColor,
     embedsValidationStatus,
+    theme,
   }: {
     isExporting: boolean;
     canvasBackgroundColor: string;
     embedsValidationStatus: EmbedsValidationStatus | null;
+    theme?: AppState["theme"];
   },
-): Drawable | Drawable[] | null => {
+): ElementShape => {
+  const isDarkMode = theme === THEME.DARK;
   switch (element.type) {
     case "rectangle":
     case "iframe":
@@ -640,6 +673,7 @@ const generateElementShape = (
               embedsValidationStatus,
             ),
             true,
+            isDarkMode,
           ),
         );
       } else {
@@ -655,6 +689,7 @@ const generateElementShape = (
               embedsValidationStatus,
             ),
             false,
+            isDarkMode,
           ),
         );
       }
@@ -692,7 +727,7 @@ const generateElementShape = (
             C ${topX} ${topY}, ${topX} ${topY}, ${topX + verticalRadius} ${
             topY + horizontalRadius
           }`,
-          generateRoughOptions(element, true),
+          generateRoughOptions(element, true, isDarkMode),
         );
       } else {
         shape = generator.polygon(
@@ -702,7 +737,7 @@ const generateElementShape = (
             [bottomX, bottomY],
             [leftX, leftY],
           ],
-          generateRoughOptions(element),
+          generateRoughOptions(element, false, isDarkMode),
         );
       }
       return shape;
@@ -713,14 +748,14 @@ const generateElementShape = (
         element.height / 2,
         element.width,
         element.height,
-        generateRoughOptions(element),
+        generateRoughOptions(element, false, isDarkMode),
       );
       return shape;
     }
     case "line":
     case "arrow": {
       let shape: ElementShapes[typeof element.type];
-      const options = generateRoughOptions(element);
+      const options = generateRoughOptions(element, false, isDarkMode);
 
       // points array can be empty in the beginning, so it is important to add
       // initial position to it
@@ -745,7 +780,7 @@ const generateElementShape = (
           shape = [
             generator.path(
               generateElbowArrowShape(points, 16),
-              generateRoughOptions(element, true),
+              generateRoughOptions(element, true, isDarkMode),
             ),
           ];
         }
@@ -778,6 +813,7 @@ const generateElementShape = (
             generator,
             options,
             canvasBackgroundColor,
+            isDarkMode,
           );
           shape.push(...shapes);
         }
@@ -795,6 +831,7 @@ const generateElementShape = (
             generator,
             options,
             canvasBackgroundColor,
+            isDarkMode,
           );
           shape.push(...shapes);
         }
@@ -802,23 +839,32 @@ const generateElementShape = (
       return shape;
     }
     case "freedraw": {
-      let shape: ElementShapes[typeof element.type];
-      generateFreeDrawShape(element);
+      // oredered in terms of z-index [background, stroke]
+      const shapes: ElementShapes[typeof element.type] = [];
 
+      // (1) background fill (rc shape), optional
       if (isPathALoop(element.points)) {
         // generate rough polygon to fill freedraw shape
         const simplifiedPoints = simplify(
           element.points as Mutable<LocalPoint[]>,
           0.75,
         );
-        shape = generator.curve(simplifiedPoints as [number, number][], {
-          ...generateRoughOptions(element),
-          stroke: "none",
-        });
-      } else {
-        shape = null;
+        shapes.push(
+          generator.curve(simplifiedPoints as [number, number][], {
+            ...generateRoughOptions(element, false, isDarkMode),
+            stroke: "none",
+          }),
+        );
       }
-      return shape;
+
+      // (2) stroke - use new ovoid renderer or legacy perfect-freehand
+      if (USE_NEW_FREEDRAW_RENDERER) {
+        shapes.push(generateFreeDrawOvoidSvgPath(element) as SVGPathString);
+      } else {
+        shapes.push(getFreeDrawSvgPath(element));
+      }
+
+      return shapes;
     }
     case "frame":
     case "magicframe":
@@ -925,9 +971,7 @@ export const getElementShape = <Point extends GlobalPoint | LocalPoint>(
       return getPolygonShape(element);
     case "arrow":
     case "line": {
-      const roughShape =
-        ShapeCache.get(element)?.[0] ??
-        ShapeCache.generateElementShape(element, null)[0];
+      const roughShape = ShapeCache.generateElementShape(element, null)[0];
       const [, , , , cx, cy] = getElementAbsoluteCoords(element, elementsMap);
 
       return shouldTestInside(element)
@@ -1003,3 +1047,69 @@ export const toggleLinePolygonState = (
 
   return ret;
 };
+
+// -----------------------------------------------------------------------------
+//                         freedraw shape helper
+// -----------------------------------------------------------------------------
+
+// NOTE not cached (-> for SVG export)
+const getFreeDrawSvgPath = (element: ExcalidrawFreeDrawElement) => {
+  return getSvgPathFromStroke(
+    getFreedrawOutlinePoints(element),
+  ) as SVGPathString;
+};
+
+export const getFreedrawOutlinePoints = (
+  element: ExcalidrawFreeDrawElement,
+) => {
+  // If input points are empty (should they ever be?) return a dot
+  const inputPoints = element.simulatePressure
+    ? element.points
+    : element.points.length
+    ? element.points.map(([x, y], i) => [x, y, element.pressures[i]])
+    : [[0, 0, 0.5]];
+
+  return getStroke(inputPoints as number[][], {
+    simulatePressure: element.simulatePressure,
+    size: element.strokeWidth * 4.25,
+    thinning: 0.6,
+    smoothing: 0.5,
+    streamline: 0.5,
+    easing: (t) => Math.sin((t * Math.PI) / 2), // https://easings.net/#easeOutSine
+    last: true,
+  }) as [number, number][];
+};
+
+const med = (A: number[], B: number[]) => {
+  return [(A[0] + B[0]) / 2, (A[1] + B[1]) / 2];
+};
+
+// Trim SVG path data so number are each two decimal points. This
+// improves SVG exports, and prevents rendering errors on points
+// with long decimals.
+const TO_FIXED_PRECISION = /(\s?[A-Z]?,?-?[0-9]*\.[0-9]{0,2})(([0-9]|e|-)*)/g;
+
+const getSvgPathFromStroke = (points: number[][]): string => {
+  if (!points.length) {
+    return "";
+  }
+
+  const max = points.length - 1;
+
+  return points
+    .reduce(
+      (acc, point, i, arr) => {
+        if (i === max) {
+          acc.push(point, med(point, arr[0]), "L", arr[0], "Z");
+        } else {
+          acc.push(point, med(point, arr[i + 1]));
+        }
+        return acc;
+      },
+      ["M", points[0], "Q"],
+    )
+    .join(" ")
+    .replace(TO_FIXED_PRECISION, "$1");
+};
+
+// -----------------------------------------------------------------------------

packages/element/src/transform.ts

@@ -16,7 +16,9 @@ import {
   getLineHeight,
 } from "@excalidraw/common";
 
-import { bindLinearElement } from "@excalidraw/element";
+import type { MarkOptional } from "@excalidraw/common/utility-types";
+
+import { bindBindingElement } from "./binding";
 import {
   newArrowElement,
   newElement,
@@ -25,21 +27,20 @@ import {
   newLinearElement,
   newMagicFrameElement,
   newTextElement,
-} from "@excalidraw/element";
-import { measureText, normalizeText } from "@excalidraw/element";
-import { isArrowElement } from "@excalidraw/element";
+  type ElementConstructorOpts,
+} from "./newElement";
+import { measureText, normalizeText } from "./textMeasurements";
+import { isArrowElement } from "./typeChecks";
 
-import { syncInvalidIndices } from "@excalidraw/element";
+import { syncInvalidIndices } from "./fractionalIndex";
 
-import { redrawTextBoundingBox } from "@excalidraw/element";
+import { redrawTextBoundingBox } from "./textElement";
 
-import { LinearElementEditor } from "@excalidraw/element";
+import { LinearElementEditor } from "./linearElementEditor";
 
-import { getCommonBounds } from "@excalidraw/element";
+import { getCommonBounds } from "./bounds";
 
-import { Scene } from "@excalidraw/element";
-
-import type { ElementConstructorOpts } from "@excalidraw/element";
+import { Scene } from "./Scene";
 
 import type {
   ExcalidrawArrowElement,
@@ -59,9 +60,7 @@ import type {
   NonDeletedSceneElementsMap,
   TextAlign,
   VerticalAlign,
-} from "@excalidraw/element/types";
-
-import type { MarkOptional } from "@excalidraw/common/utility-types";
+} from "./types";
 
 export type ValidLinearElement = {
   type: "arrow" | "line";
@@ -330,9 +329,10 @@ const bindLinearElementToElement = (
         }
       }
 
-      bindLinearElement(
+      bindBindingElement(
         linearElement,
         startBoundElement as ExcalidrawBindableElement,
+        "orbit",
         "start",
         scene,
       );
@@ -405,9 +405,10 @@ const bindLinearElementToElement = (
         }
       }
 
-      bindLinearElement(
+      bindBindingElement(
         linearElement,
         endBoundElement as ExcalidrawBindableElement,
+        "orbit",
         "end",
         scene,
       );

packages/element/src/transformHandles.ts

@@ -11,6 +11,7 @@ import type {
   InteractiveCanvasAppState,
   Zoom,
 } from "@excalidraw/excalidraw/types";
+import type { Bounds } from "@excalidraw/common";
 
 import { getElementAbsoluteCoords } from "./bounds";
 import {
@@ -20,7 +21,6 @@ import {
   isLinearElement,
 } from "./typeChecks";
 
-import type { Bounds } from "./bounds";
 import type {
   ElementsMap,
   ExcalidrawElement,
@@ -330,7 +330,10 @@ export const hasBoundingBox = (
   appState: InteractiveCanvasAppState,
   editorInterface: EditorInterface,
 ) => {
-  if (appState.selectedLinearElement?.isEditing) {
+  if (
+    appState.selectedLinearElement?.isEditing ||
+    appState.selectedLinearElement?.isDragging
+  ) {
     return false;
   }
   if (elements.length > 1) {

packages/element/src/typeChecks.ts

@@ -6,7 +6,6 @@ import type { ElementOrToolType } from "@excalidraw/excalidraw/types";
 
 import type { MarkNonNullable } from "@excalidraw/common/utility-types";
 
-import type { Bounds } from "./bounds";
 import type {
   ExcalidrawElement,
   ExcalidrawTextElement,
@@ -28,8 +27,6 @@ import type {
   ExcalidrawArrowElement,
   ExcalidrawElbowArrowElement,
   ExcalidrawLineElement,
-  PointBinding,
-  FixedPointBinding,
   ExcalidrawFlowchartNodeElement,
   ExcalidrawLinearElementSubType,
 } from "./types";
@@ -163,7 +160,7 @@ export const isLinearElementType = (
 export const isBindingElement = (
   element?: ExcalidrawElement | null,
   includeLocked = true,
-): element is ExcalidrawLinearElement => {
+): element is ExcalidrawArrowElement => {
   return (
     element != null &&
     (!element.locked || includeLocked === true) &&
@@ -358,24 +355,6 @@ export const getDefaultRoundnessTypeForElement = (
   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 => {

packages/element/src/types.ts

@@ -279,23 +279,22 @@ export type ExcalidrawTextElementWithContainer = {
 
 export type FixedPoint = [number, number];
 
-export type PointBinding = {
-  elementId: ExcalidrawBindableElement["id"];
-  focus: number;
-  gap: number;
-};
+export type BindMode = "inside" | "orbit" | "skip";
 
-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;
-  }
->;
+export type FixedPointBinding = {
+  elementId: ExcalidrawBindableElement["id"];
+
+  // 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;
+
+  // Determines whether the arrow remains outside the shape or is allowed to
+  // go all the way inside the shape up to the exact fixed point.
+  mode: BindMode;
+};
 
 type Index = number;
 
@@ -322,9 +321,8 @@ export type ExcalidrawLinearElement = _ExcalidrawElementBase &
   Readonly<{
     type: "line" | "arrow";
     points: readonly LocalPoint[];
-    lastCommittedPoint: LocalPoint | null;
-    startBinding: PointBinding | null;
-    endBinding: PointBinding | null;
+    startBinding: FixedPointBinding | null;
+    endBinding: FixedPointBinding | null;
     startArrowhead: Arrowhead | null;
     endArrowhead: Arrowhead | null;
   }>;
@@ -351,9 +349,9 @@ export type ExcalidrawElbowArrowElement = Merge<
   ExcalidrawArrowElement,
   {
     elbowed: true;
+    fixedSegments: readonly FixedSegment[] | null;
     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
@@ -379,7 +377,6 @@ export type ExcalidrawFreeDrawElement = _ExcalidrawElementBase &
     points: readonly LocalPoint[];
     pressures: readonly number[];
     simulatePressure: boolean;
-    lastCommittedPoint: LocalPoint | null;
   }>;
 
 export type FileId = string & { _brand: "FileId" };

packages/element/src/utils.ts

@@ -1,6 +1,7 @@
 import {
   DEFAULT_ADAPTIVE_RADIUS,
   DEFAULT_PROPORTIONAL_RADIUS,
+  invariant,
   LINE_CONFIRM_THRESHOLD,
   ROUNDNESS,
 } from "@excalidraw/common";
@@ -10,10 +11,17 @@ import {
   curveCatmullRomCubicApproxPoints,
   curveOffsetPoints,
   lineSegment,
+  lineSegmentIntersectionPoints,
   pointDistance,
   pointFrom,
   pointFromArray,
+  pointFromVector,
+  pointRotateRads,
+  pointTranslate,
   rectangle,
+  vectorFromPoint,
+  vectorNormalize,
+  vectorScale,
   type GlobalPoint,
 } from "@excalidraw/math";
 
@@ -21,11 +29,17 @@ import type { Curve, LineSegment, LocalPoint } from "@excalidraw/math";
 
 import type { NormalizedZoomValue, Zoom } from "@excalidraw/excalidraw/types";
 
-import { getDiamondPoints } from "./bounds";
+import { elementCenterPoint, getDiamondPoints } from "./bounds";
 
 import { generateLinearCollisionShape } from "./shape";
 
+import { isPointInElement } from "./collision";
+import { LinearElementEditor } from "./linearElementEditor";
+import { isRectangularElement } from "./typeChecks";
+
 import type {
+  ElementsMap,
+  ExcalidrawArrowElement,
   ExcalidrawDiamondElement,
   ExcalidrawElement,
   ExcalidrawFreeDrawElement,
@@ -400,20 +414,10 @@ export function deconstructDiamondElement(
     ), // TOP
   ];
 
-  const corners =
-    offset > 0
-      ? baseCorners.map(
-          (corner) =>
-            curveCatmullRomCubicApproxPoints(
-              curveOffsetPoints(corner, offset),
-            )!,
-        )
-      : [
-          [baseCorners[0]],
-          [baseCorners[1]],
-          [baseCorners[2]],
-          [baseCorners[3]],
-        ];
+  const corners = baseCorners.map(
+    (corner) =>
+      curveCatmullRomCubicApproxPoints(curveOffsetPoints(corner, offset))!,
+  );
 
   const sides = [
     lineSegment<GlobalPoint>(
@@ -481,3 +485,136 @@ export const getCornerRadius = (x: number, element: ExcalidrawElement) => {
 
   return 0;
 };
+
+const getDiagonalsForBindableElement = (
+  element: ExcalidrawElement,
+  elementsMap: ElementsMap,
+) => {
+  // for rectangles, shrink the diagonals a bit because there's something
+  // going on with the focus points around the corners. Ask Mark for details.
+  const OFFSET_PX = element.type === "rectangle" ? 15 : 0;
+  const shrinkSegment = (seg: LineSegment<GlobalPoint>) => {
+    const v = vectorNormalize(vectorFromPoint(seg[1], seg[0]));
+    const offset = vectorScale(v, OFFSET_PX);
+    return lineSegment<GlobalPoint>(
+      pointTranslate(seg[0], offset),
+      pointTranslate(seg[1], vectorScale(offset, -1)),
+    );
+  };
+
+  const center = elementCenterPoint(element, elementsMap);
+  const diagonalOne = shrinkSegment(
+    isRectangularElement(element)
+      ? lineSegment<GlobalPoint>(
+          pointRotateRads(
+            pointFrom<GlobalPoint>(element.x, element.y),
+            center,
+            element.angle,
+          ),
+          pointRotateRads(
+            pointFrom<GlobalPoint>(
+              element.x + element.width,
+              element.y + element.height,
+            ),
+            center,
+            element.angle,
+          ),
+        )
+      : lineSegment<GlobalPoint>(
+          pointRotateRads(
+            pointFrom<GlobalPoint>(element.x + element.width / 2, element.y),
+            center,
+            element.angle,
+          ),
+          pointRotateRads(
+            pointFrom<GlobalPoint>(
+              element.x + element.width / 2,
+              element.y + element.height,
+            ),
+            center,
+            element.angle,
+          ),
+        ),
+  );
+  const diagonalTwo = shrinkSegment(
+    isRectangularElement(element)
+      ? lineSegment<GlobalPoint>(
+          pointRotateRads(
+            pointFrom<GlobalPoint>(element.x + element.width, element.y),
+            center,
+            element.angle,
+          ),
+          pointRotateRads(
+            pointFrom<GlobalPoint>(element.x, element.y + element.height),
+            center,
+            element.angle,
+          ),
+        )
+      : lineSegment<GlobalPoint>(
+          pointRotateRads(
+            pointFrom<GlobalPoint>(element.x, element.y + element.height / 2),
+            center,
+            element.angle,
+          ),
+          pointRotateRads(
+            pointFrom<GlobalPoint>(
+              element.x + element.width,
+              element.y + element.height / 2,
+            ),
+            center,
+            element.angle,
+          ),
+        ),
+  );
+
+  return [diagonalOne, diagonalTwo];
+};
+
+export const projectFixedPointOntoDiagonal = (
+  arrow: ExcalidrawArrowElement,
+  point: GlobalPoint,
+  element: ExcalidrawElement,
+  startOrEnd: "start" | "end",
+  elementsMap: ElementsMap,
+): GlobalPoint | null => {
+  invariant(arrow.points.length >= 2, "Arrow must have at least two points");
+  if (arrow.width < 3 && arrow.height < 3) {
+    return null;
+  }
+
+  const [diagonalOne, diagonalTwo] = getDiagonalsForBindableElement(
+    element,
+    elementsMap,
+  );
+
+  const a = LinearElementEditor.getPointAtIndexGlobalCoordinates(
+    arrow,
+    startOrEnd === "start" ? 1 : arrow.points.length - 2,
+    elementsMap,
+  );
+  const b = pointFromVector<GlobalPoint>(
+    vectorScale(
+      vectorFromPoint(point, a),
+      2 * pointDistance(a, point) +
+        Math.max(
+          pointDistance(diagonalOne[0], diagonalOne[1]),
+          pointDistance(diagonalTwo[0], diagonalTwo[1]),
+        ),
+    ),
+    a,
+  );
+  const intersector = lineSegment<GlobalPoint>(point, b);
+  const p1 = lineSegmentIntersectionPoints(diagonalOne, intersector);
+  const p2 = lineSegmentIntersectionPoints(diagonalTwo, intersector);
+  const d1 = p1 && pointDistance(a, p1);
+  const d2 = p2 && pointDistance(a, p2);
+
+  let p = null;
+  if (d1 != null && d2 != null) {
+    p = d1 < d2 ? p1 : p2;
+  } else {
+    p = p1 || p2 || null;
+  }
+
+  return p && isPointInElement(p, element, elementsMap) ? p : null;
+};

packages/element/src/zindex.ts

@@ -1,18 +1,25 @@
 import { arrayToMap, findIndex, findLastIndex } from "@excalidraw/common";
 
 import type { AppState } from "@excalidraw/excalidraw/types";
+import type { GlobalPoint } from "@excalidraw/math";
 
-import { isFrameLikeElement } from "./typeChecks";
-
+import { isFrameLikeElement, isTextElement } from "./typeChecks";
 import { getElementsInGroup } from "./groups";
-
 import { syncMovedIndices } from "./fractionalIndex";
-
 import { getSelectedElements } from "./selection";
+import { getBoundTextElement, getContainerElement } from "./textElement";
+import { getHoveredElementForBinding } from "./collision";
 
 import type { Scene } from "./Scene";
-
-import type { ExcalidrawElement, ExcalidrawFrameLikeElement } from "./types";
+import type {
+  ExcalidrawArrowElement,
+  ExcalidrawElement,
+  ExcalidrawFrameLikeElement,
+  NonDeletedExcalidrawElement,
+  NonDeletedSceneElementsMap,
+  Ordered,
+  OrderedExcalidrawElement,
+} from "./types";
 
 const isOfTargetFrame = (element: ExcalidrawElement, frameId: string) => {
   return element.frameId === frameId || element.id === frameId;
@@ -139,6 +146,51 @@ const getContiguousFrameRangeElements = (
   return allElements.slice(rangeStart, rangeEnd + 1);
 };
 
+/**
+ * Moves the arrow element above any bindable elements it intersects with or
+ * hovers over.
+ */
+export const moveArrowAboveBindable = (
+  point: GlobalPoint,
+  arrow: ExcalidrawArrowElement,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  scene: Scene,
+): readonly OrderedExcalidrawElement[] => {
+  const hoveredElement = getHoveredElementForBinding(
+    point,
+    elements,
+    elementsMap,
+  );
+
+  if (!hoveredElement) {
+    return elements;
+  }
+
+  const boundTextElement = getBoundTextElement(hoveredElement, elementsMap);
+  const containerElement = isTextElement(hoveredElement)
+    ? getContainerElement(hoveredElement, elementsMap)
+    : null;
+
+  const bindableIds = [
+    hoveredElement.id,
+    boundTextElement?.id,
+    containerElement?.id,
+  ].filter((id): id is NonDeletedExcalidrawElement["id"] => !!id);
+  const bindableIdx = elements.findIndex((el) => bindableIds.includes(el.id));
+  const arrowIdx = elements.findIndex((el) => el.id === arrow.id);
+
+  if (arrowIdx !== -1 && bindableIdx !== -1 && arrowIdx < bindableIdx) {
+    const updatedElements = Array.from(elements);
+    const arrow = updatedElements.splice(arrowIdx, 1)[0];
+    updatedElements.splice(bindableIdx, 0, arrow);
+
+    scene.replaceAllElements(updatedElements);
+  }
+
+  return elements;
+};
+
 /**
  * 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).

packages/element/tests/__snapshots__/linearElementEditor.test.tsx.snap

@@ -17,7 +17,7 @@ exports[`Test Linear Elements > Test bound text element > should match styles fo
   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;"
+  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; 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"
 />

packages/element/tests/bounds.test.ts

@@ -135,9 +135,9 @@ describe("getElementBounds", () => {
     } 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);
+    expect(x1).toEqual(360.9291017525165);
+    expect(y1).toEqual(185.24770129343722);
+    expect(x2).toEqual(481.4815539037601);
+    expect(y2).toEqual(319.8162855827246);
   });
 });

packages/element/tests/duplicate.test.tsx

@@ -144,9 +144,8 @@ describe("duplicating multiple elements", () => {
       id: "arrow1",
       startBinding: {
         elementId: "rectangle1",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
     });
 
@@ -155,9 +154,8 @@ describe("duplicating multiple elements", () => {
       id: "arrow2",
       endBinding: {
         elementId: "rectangle1",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
       boundElements: [{ id: "text2", type: "text" }],
     });
@@ -276,9 +274,8 @@ describe("duplicating multiple elements", () => {
       id: "arrow1",
       startBinding: {
         elementId: "rectangle1",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
     });
 
@@ -293,15 +290,13 @@ describe("duplicating multiple elements", () => {
       id: "arrow2",
       startBinding: {
         elementId: "rectangle1",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
       endBinding: {
         elementId: "rectangle-not-exists",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
     });
 
@@ -310,15 +305,13 @@ describe("duplicating multiple elements", () => {
       id: "arrow3",
       startBinding: {
         elementId: "rectangle-not-exists",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
       endBinding: {
         elementId: "rectangle1",
-        focus: 0.2,
-        gap: 7,
         fixedPoint: [0.5, 1],
+        mode: "orbit",
       },
     });
 
@@ -821,7 +814,7 @@ describe("duplication z-order", () => {
     const arrow = UI.createElement("arrow", {
       x: -100,
       y: 50,
-      width: 95,
+      width: 115,
       height: 0,
     });
 

packages/element/tests/elbowArrow.test.tsx

@@ -1,13 +1,10 @@
 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,
@@ -15,13 +12,11 @@ import {
   queryByTestId,
   render,
 } from "@excalidraw/excalidraw/tests/test-utils";
-
 import "@excalidraw/utils/test-utils";
+import { bindBindingElement } from "@excalidraw/element";
 
 import type { LocalPoint } from "@excalidraw/math";
 
-import { bindLinearElement } from "../src/binding";
-
 import { Scene } from "../src/Scene";
 
 import type {
@@ -136,6 +131,11 @@ describe("elbow arrow segment move", () => {
 });
 
 describe("elbow arrow routing", () => {
+  beforeEach(async () => {
+    localStorage.clear();
+    await render(<Excalidraw handleKeyboardGlobally={true} />);
+  });
+
   it("can properly generate orthogonal arrow points", () => {
     const scene = new Scene();
     const arrow = API.createElement({
@@ -160,8 +160,8 @@ describe("elbow arrow routing", () => {
     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,
@@ -185,25 +185,23 @@ describe("elbow arrow routing", () => {
       height: 200,
       points: [pointFrom(0, 0), pointFrom(90, 200)],
     }) as ExcalidrawElbowArrowElement;
-    scene.insertElement(rectangle1);
-    scene.insertElement(rectangle2);
-    scene.insertElement(arrow);
+    API.setElements([rectangle1, rectangle2, arrow]);
 
-    bindLinearElement(arrow, rectangle1, "start", scene);
-    bindLinearElement(arrow, rectangle2, "end", scene);
+    bindBindingElement(arrow, rectangle1, "orbit", "start", h.scene);
+    bindBindingElement(arrow, rectangle2, "orbit", "end", h.scene);
 
     expect(arrow.startBinding).not.toBe(null);
     expect(arrow.endBinding).not.toBe(null);
 
-    h.app.scene.mutateElement(arrow, {
+    h.scene.mutateElement(arrow, {
       points: [pointFrom<LocalPoint>(0, 0), pointFrom<LocalPoint>(90, 200)],
     });
 
-    expect(arrow.points).toEqual([
+    expect(arrow.points).toCloselyEqualPoints([
       [0, 0],
-      [45, 0],
-      [45, 200],
-      [90, 200],
+      [39, 0],
+      [39, 200],
+      [78, 200],
     ]);
   });
 });
@@ -242,9 +240,9 @@ describe("elbow arrow ui", () => {
     expect(h.state.currentItemArrowType).toBe(ARROW_TYPE.elbow);
 
     mouse.reset();
-    mouse.moveTo(-43, -99);
+    mouse.moveTo(-53, -99);
     mouse.click();
-    mouse.moveTo(43, 99);
+    mouse.moveTo(53, 99);
     mouse.click();
 
     const arrow = h.scene.getSelectedElements(
@@ -253,11 +251,11 @@ describe("elbow arrow ui", () => {
 
     expect(arrow.type).toBe("arrow");
     expect(arrow.elbowed).toBe(true);
-    expect(arrow.points).toEqual([
+    expect(arrow.points).toCloselyEqualPoints([
       [0, 0],
-      [45, 0],
-      [45, 200],
-      [90, 200],
+      [39, 0],
+      [39, 200],
+      [78, 200],
     ]);
   });
 
@@ -279,9 +277,9 @@ describe("elbow arrow ui", () => {
     UI.clickOnTestId("elbow-arrow");
 
     mouse.reset();
-    mouse.moveTo(-43, -99);
+    mouse.moveTo(-53, -99);
     mouse.click();
-    mouse.moveTo(43, 99);
+    mouse.moveTo(53, 99);
     mouse.click();
 
     const arrow = h.scene.getSelectedElements(
@@ -297,9 +295,11 @@ describe("elbow arrow ui", () => {
 
     expect(arrow.points.map((point) => point.map(Math.round))).toEqual([
       [0, 0],
-      [35, 0],
-      [35, 165],
-      [103, 165],
+      [36, 0],
+      [36, 90],
+      [28, 90],
+      [28, 164],
+      [101, 164],
     ]);
   });
 
@@ -321,9 +321,9 @@ describe("elbow arrow ui", () => {
     UI.clickOnTestId("elbow-arrow");
 
     mouse.reset();
-    mouse.moveTo(-43, -99);
+    mouse.moveTo(-53, -99);
     mouse.click();
-    mouse.moveTo(43, 99);
+    mouse.moveTo(53, 99);
     mouse.click();
 
     const arrow = h.scene.getSelectedElements(
@@ -351,11 +351,11 @@ describe("elbow arrow ui", () => {
     expect(duplicatedArrow.id).not.toBe(originalArrowId);
     expect(duplicatedArrow.type).toBe("arrow");
     expect(duplicatedArrow.elbowed).toBe(true);
-    expect(duplicatedArrow.points).toEqual([
+    expect(duplicatedArrow.points).toCloselyEqualPoints([
       [0, 0],
-      [45, 0],
-      [45, 200],
-      [90, 200],
+      [39, 0],
+      [39, 200],
+      [78, 200],
     ]);
     expect(arrow.startBinding).not.toBe(null);
     expect(arrow.endBinding).not.toBe(null);
@@ -379,9 +379,9 @@ describe("elbow arrow ui", () => {
     UI.clickOnTestId("elbow-arrow");
 
     mouse.reset();
-    mouse.moveTo(-43, -99);
+    mouse.moveTo(-53, -99);
     mouse.click();
-    mouse.moveTo(43, 99);
+    mouse.moveTo(53, 99);
     mouse.click();
 
     const arrow = h.scene.getSelectedElements(
@@ -405,11 +405,11 @@ describe("elbow arrow ui", () => {
     expect(duplicatedArrow.id).not.toBe(originalArrowId);
     expect(duplicatedArrow.type).toBe("arrow");
     expect(duplicatedArrow.elbowed).toBe(true);
-    expect(duplicatedArrow.points).toEqual([
+    expect(duplicatedArrow.points).toCloselyEqualPoints([
       [0, 0],
       [0, 100],
-      [90, 100],
-      [90, 200],
+      [78, 100],
+      [78, 200],
     ]);
   });
 });

packages/element/tests/linearElementEditor.test.tsx

@@ -217,7 +217,7 @@ describe("Test Linear Elements", () => {
 
     // drag line from midpoint
     drag(midpoint, pointFrom(midpoint[0] + delta, midpoint[1] + delta));
-    expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(`9`);
+    expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(`8`);
     expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
     expect(line.points.length).toEqual(3);
     expect(line.points).toMatchInlineSnapshot(`
@@ -329,7 +329,7 @@ describe("Test Linear Elements", () => {
     expect(h.state.selectedLinearElement?.isEditing).toBe(false);
 
     mouse.doubleClick();
-    expect(h.state.selectedLinearElement).toBe(null);
+    expect(h.state.selectedLinearElement?.isEditing).toBe(false);
     await getTextEditor();
   });
 
@@ -357,6 +357,7 @@ describe("Test Linear Elements", () => {
       const originalY = line.y;
       enterLineEditingMode(line);
 
+      expect(h.state.selectedLinearElement?.isEditing).toBe(true);
       expect(line.points.length).toEqual(2);
 
       mouse.clickAt(midpoint[0], midpoint[1]);
@@ -379,7 +380,7 @@ describe("Test Linear Elements", () => {
       expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
         `11`,
       );
-      expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`6`);
+      expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
 
       expect(line.points.length).toEqual(3);
       expect(line.points).toMatchInlineSnapshot(`
@@ -549,7 +550,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `14`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`9`);
 
         expect(line.points.length).toEqual(5);
 
@@ -600,7 +601,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `11`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`6`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
 
         const newPoints = LinearElementEditor.getPointsGlobalCoordinates(
           line,
@@ -641,7 +642,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `11`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`6`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
 
         const newPoints = LinearElementEditor.getPointsGlobalCoordinates(
           line,
@@ -689,7 +690,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `17`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`10`);
 
         const newMidPoints = LinearElementEditor.getEditorMidPoints(
           line,
@@ -747,7 +748,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `14`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`9`);
         expect(line.points.length).toEqual(5);
 
         expect((h.elements[0] as ExcalidrawLinearElement).points)
@@ -845,7 +846,7 @@ describe("Test Linear Elements", () => {
         expect(renderInteractiveScene.mock.calls.length).toMatchInlineSnapshot(
           `11`,
         );
-        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`6`);
+        expect(renderStaticScene.mock.calls.length).toMatchInlineSnapshot(`7`);
 
         const newPoints = LinearElementEditor.getPointsGlobalCoordinates(
           line,
@@ -1303,7 +1304,7 @@ describe("Test Linear Elements", () => {
       const arrow = UI.createElement("arrow", {
         x: -10,
         y: 250,
-        width: 400,
+        width: 410,
         height: 1,
       });
 
@@ -1316,7 +1317,7 @@ describe("Test Linear Elements", () => {
       const textElement = h.elements[2] as ExcalidrawTextElementWithContainer;
 
       expect(arrow.endBinding?.elementId).toBe(rect.id);
-      expect(arrow.width).toBe(400);
+      expect(arrow.width).toBeCloseTo(399);
       expect(rect.x).toBe(400);
       expect(rect.y).toBe(0);
       expect(
@@ -1335,7 +1336,7 @@ describe("Test Linear Elements", () => {
       mouse.downAt(rect.x, rect.y);
       mouse.moveTo(200, 0);
       mouse.upAt(200, 0);
-      expect(arrow.width).toBeCloseTo(200, 0);
+      expect(arrow.width).toBeCloseTo(199);
       expect(rect.x).toBe(200);
       expect(rect.y).toBe(0);
       expect(handleBindTextResizeSpy).toHaveBeenCalledWith(

packages/element/tests/resize.test.tsx

@@ -2,6 +2,7 @@ import { pointFrom } from "@excalidraw/math";
 
 import { Excalidraw } from "@excalidraw/excalidraw";
 import {
+  type Bounds,
   KEYS,
   getSizeFromPoints,
   reseed,
@@ -22,7 +23,6 @@ import { resizeSingleElement } from "../src/resizeElements";
 import { LinearElementEditor } from "../src/linearElementEditor";
 import { getElementPointsCoords } from "../src/bounds";
 
-import type { Bounds } from "../src/bounds";
 import type {
   ExcalidrawElbowArrowElement,
   ExcalidrawFreeDrawElement,
@@ -174,29 +174,29 @@ describe("generic element", () => {
     expect(rectangle.angle).toBeCloseTo(0);
   });
 
-  it("resizes with bound arrow", async () => {
-    const rectangle = UI.createElement("rectangle", {
-      width: 200,
-      height: 100,
-    });
-    const arrow = UI.createElement("arrow", {
-      x: -30,
-      y: 50,
-      width: 28,
-      height: 5,
-    });
+  // it("resizes with bound arrow", async () => {
+  //   const rectangle = UI.createElement("rectangle", {
+  //     width: 200,
+  //     height: 100,
+  //   });
+  //   const arrow = UI.createElement("arrow", {
+  //     x: -30,
+  //     y: 50,
+  //     width: 28,
+  //     height: 5,
+  //   });
 
-    expect(arrow.endBinding?.elementId).toEqual(rectangle.id);
+  //   expect(arrow.endBinding?.elementId).toEqual(rectangle.id);
 
-    UI.resize(rectangle, "e", [40, 0]);
+  //   UI.resize(rectangle, "e", [40, 0]);
 
-    expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(30, 0);
+  //   expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(30, 0);
 
-    UI.resize(rectangle, "w", [50, 0]);
+  //   UI.resize(rectangle, "w", [50, 0]);
 
-    expect(arrow.endBinding?.elementId).toEqual(rectangle.id);
-    expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(80, 0);
-  });
+  //   expect(arrow.endBinding?.elementId).toEqual(rectangle.id);
+  //   expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(80, 0);
+  // });
 
   it("resizes with a label", async () => {
     const rectangle = UI.createElement("rectangle", {
@@ -510,12 +510,12 @@ describe("arrow element", () => {
       h.state,
     )[0] as ExcalidrawElbowArrowElement;
 
-    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.05);
+    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.06);
     expect(arrow.startBinding?.fixedPoint?.[1]).toBeCloseTo(0.75);
 
     UI.resize(rectangle, "se", [-200, -150]);
 
-    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.05);
+    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.06);
     expect(arrow.startBinding?.fixedPoint?.[1]).toBeCloseTo(0.75);
   });
 
@@ -538,11 +538,11 @@ describe("arrow element", () => {
       h.state,
     )[0] as ExcalidrawElbowArrowElement;
 
-    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.05);
+    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(1.06);
     expect(arrow.startBinding?.fixedPoint?.[1]).toBeCloseTo(0.75);
 
     UI.resize([rectangle, arrow], "nw", [300, 350]);
-    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(-0.05);
+    expect(arrow.startBinding?.fixedPoint?.[0]).toBeCloseTo(-0.06);
     expect(arrow.startBinding?.fixedPoint?.[1]).toBeCloseTo(0.25);
   });
 });
@@ -595,31 +595,31 @@ describe("text element", () => {
     expect(text.fontSize).toBeCloseTo(fontSize * scale);
   });
 
-  it("resizes with bound arrow", async () => {
-    const text = UI.createElement("text");
-    await UI.editText(text, "hello\nworld");
-    const boundArrow = UI.createElement("arrow", {
-      x: -30,
-      y: 25,
-      width: 28,
-      height: 5,
-    });
+  // it("resizes with bound arrow", async () => {
+  //   const text = UI.createElement("text");
+  //   await UI.editText(text, "hello\nworld");
+  //   const boundArrow = UI.createElement("arrow", {
+  //     x: -30,
+  //     y: 25,
+  //     width: 28,
+  //     height: 5,
+  //   });
 
-    expect(boundArrow.endBinding?.elementId).toEqual(text.id);
+  //   expect(boundArrow.endBinding?.elementId).toEqual(text.id);
 
-    UI.resize(text, "ne", [40, 0]);
+  //   UI.resize(text, "ne", [40, 0]);
 
-    expect(boundArrow.width + boundArrow.endBinding!.gap).toBeCloseTo(30);
+  //   expect(boundArrow.width + boundArrow.endBinding!.gap).toBeCloseTo(30);
 
-    const textWidth = text.width;
-    const scale = 20 / text.height;
-    UI.resize(text, "nw", [50, 20]);
+  //   const textWidth = text.width;
+  //   const scale = 20 / text.height;
+  //   UI.resize(text, "nw", [50, 20]);
 
-    expect(boundArrow.endBinding?.elementId).toEqual(text.id);
-    expect(boundArrow.width + boundArrow.endBinding!.gap).toBeCloseTo(
-      30 + textWidth * scale,
-    );
-  });
+  //   expect(boundArrow.endBinding?.elementId).toEqual(text.id);
+  //   expect(boundArrow.width + boundArrow.endBinding!.gap).toBeCloseTo(
+  //     30 + textWidth * scale,
+  //   );
+  // });
 
   it("updates font size via keyboard", async () => {
     const text = UI.createElement("text");
@@ -801,36 +801,36 @@ describe("image element", () => {
     expect(image.scale).toEqual([1, 1]);
   });
 
-  it("resizes with bound arrow", async () => {
-    const image = API.createElement({
-      type: "image",
-      width: 100,
-      height: 100,
-    });
-    API.setElements([image]);
-    const arrow = UI.createElement("arrow", {
-      x: -30,
-      y: 50,
-      width: 28,
-      height: 5,
-    });
+  // it("resizes with bound arrow", async () => {
+  //   const image = API.createElement({
+  //     type: "image",
+  //     width: 100,
+  //     height: 100,
+  //   });
+  //   API.setElements([image]);
+  //   const arrow = UI.createElement("arrow", {
+  //     x: -30,
+  //     y: 50,
+  //     width: 28,
+  //     height: 5,
+  //   });
 
-    expect(arrow.endBinding?.elementId).toEqual(image.id);
+  //   expect(arrow.endBinding?.elementId).toEqual(image.id);
 
-    UI.resize(image, "ne", [40, 0]);
+  //   UI.resize(image, "ne", [40, 0]);
 
-    expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(30, 0);
+  //   expect(arrow.width + arrow.endBinding!.gap).toBeCloseTo(30, 0);
 
-    const imageWidth = image.width;
-    const scale = 20 / image.height;
-    UI.resize(image, "nw", [50, 20]);
+  //   const imageWidth = image.width;
+  //   const scale = 20 / image.height;
+  //   UI.resize(image, "nw", [50, 20]);
 
-    expect(arrow.endBinding?.elementId).toEqual(image.id);
-    expect(Math.floor(arrow.width + arrow.endBinding!.gap)).toBeCloseTo(
-      30 + imageWidth * scale,
-      0,
-    );
-  });
+  //   expect(arrow.endBinding?.elementId).toEqual(image.id);
+  //   expect(Math.floor(arrow.width + arrow.endBinding!.gap)).toBeCloseTo(
+  //     30 + imageWidth * scale,
+  //     0,
+  //   );
+  // });
 });
 
 describe("multiple selection", () => {
@@ -997,68 +997,80 @@ describe("multiple selection", () => {
     expect(diagLine.angle).toEqual(0);
   });
 
-  it("resizes with bound arrows", async () => {
-    const rectangle = UI.createElement("rectangle", {
-      position: 0,
-      size: 100,
-    });
-    const leftBoundArrow = UI.createElement("arrow", {
-      x: -110,
-      y: 50,
-      width: 100,
-      height: 0,
-    });
+  // it("resizes with bound arrows", async () => {
+  //   const rectangle = UI.createElement("rectangle", {
+  //     position: 0,
+  //     size: 100,
+  //   });
+  //   const leftBoundArrow = UI.createElement("arrow", {
+  //     x: -110,
+  //     y: 50,
+  //     width: 100,
+  //     height: 0,
+  //   });
 
-    const rightBoundArrow = UI.createElement("arrow", {
-      x: 210,
-      y: 50,
-      width: -100,
-      height: 0,
-    });
+  //   const rightBoundArrow = UI.createElement("arrow", {
+  //     x: 210,
+  //     y: 50,
+  //     width: -100,
+  //     height: 0,
+  //   });
 
-    const selectionWidth = 210;
-    const selectionHeight = 100;
-    const move = [40, 40] as [number, number];
-    const scale = Math.max(
-      1 - move[0] / selectionWidth,
-      1 - move[1] / selectionHeight,
-    );
-    const leftArrowBinding = { ...leftBoundArrow.endBinding };
-    const rightArrowBinding = { ...rightBoundArrow.endBinding };
-    delete rightArrowBinding.gap;
+  //   const selectionWidth = 210;
+  //   const selectionHeight = 100;
+  //   const move = [40, 40] as [number, number];
+  //   const scale = Math.max(
+  //     1 - move[0] / selectionWidth,
+  //     1 - move[1] / selectionHeight,
+  //   );
+  //   const leftArrowBinding: {
+  //     elementId: string;
+  //     gap?: number;
+  //     focus?: number;
+  //   } = {
+  //     ...leftBoundArrow.endBinding,
+  //   } as PointBinding;
+  //   const rightArrowBinding: {
+  //     elementId: string;
+  //     gap?: number;
+  //     focus?: number;
+  //   } = {
+  //     ...rightBoundArrow.endBinding,
+  //   } as PointBinding;
+  //   delete rightArrowBinding.gap;
 
-    UI.resize([rectangle, rightBoundArrow], "nw", move, {
-      shift: true,
-    });
+  //   UI.resize([rectangle, rightBoundArrow], "nw", move, {
+  //     shift: true,
+  //   });
 
-    expect(leftBoundArrow.x).toBeCloseTo(-110);
-    expect(leftBoundArrow.y).toBeCloseTo(50);
-    expect(leftBoundArrow.width).toBeCloseTo(140, 0);
-    expect(leftBoundArrow.height).toBeCloseTo(7, 0);
-    expect(leftBoundArrow.angle).toEqual(0);
-    expect(leftBoundArrow.startBinding).toBeNull();
-    expect(leftBoundArrow.endBinding?.gap).toBeCloseTo(10);
-    expect(leftBoundArrow.endBinding?.elementId).toBe(
-      leftArrowBinding.elementId,
-    );
-    expect(leftBoundArrow.endBinding?.focus).toBe(leftArrowBinding.focus);
+  //   expect(leftBoundArrow.x).toBeCloseTo(-110);
+  //   expect(leftBoundArrow.y).toBeCloseTo(50);
+  //   expect(leftBoundArrow.width).toBeCloseTo(140, 0);
+  //   expect(leftBoundArrow.height).toBeCloseTo(7, 0);
+  //   expect(leftBoundArrow.angle).toEqual(0);
+  //   expect(leftBoundArrow.startBinding).toBeNull();
+  //   expect(leftBoundArrow.endBinding?.gap).toBeCloseTo(10);
+  //   expect(leftBoundArrow.endBinding?.elementId).toBe(
+  //     leftArrowBinding.elementId,
+  //   );
+  //   expect(leftBoundArrow.endBinding?.focus).toBe(leftArrowBinding.focus);
 
-    expect(rightBoundArrow.x).toBeCloseTo(210);
-    expect(rightBoundArrow.y).toBeCloseTo(
-      (selectionHeight - 50) * (1 - scale) + 50,
-    );
-    expect(rightBoundArrow.width).toBeCloseTo(100 * scale);
-    expect(rightBoundArrow.height).toBeCloseTo(0);
-    expect(rightBoundArrow.angle).toEqual(0);
-    expect(rightBoundArrow.startBinding).toBeNull();
-    expect(rightBoundArrow.endBinding?.gap).toBeCloseTo(8.0952);
-    expect(rightBoundArrow.endBinding?.elementId).toBe(
-      rightArrowBinding.elementId,
-    );
-    expect(rightBoundArrow.endBinding?.focus).toBeCloseTo(
-      rightArrowBinding.focus!,
-    );
-  });
+  //   expect(rightBoundArrow.x).toBeCloseTo(210);
+  //   expect(rightBoundArrow.y).toBeCloseTo(
+  //     (selectionHeight - 50) * (1 - scale) + 50,
+  //   );
+  //   expect(rightBoundArrow.width).toBeCloseTo(100 * scale);
+  //   expect(rightBoundArrow.height).toBeCloseTo(0);
+  //   expect(rightBoundArrow.angle).toEqual(0);
+  //   expect(rightBoundArrow.startBinding).toBeNull();
+  //   expect(rightBoundArrow.endBinding?.gap).toBeCloseTo(8.0952);
+  //   expect(rightBoundArrow.endBinding?.elementId).toBe(
+  //     rightArrowBinding.elementId,
+  //   );
+  //   expect(rightBoundArrow.endBinding?.focus).toBeCloseTo(
+  //     rightArrowBinding.focus!,
+  //   );
+  // });
 
   it("resizes with labeled arrows", async () => {
     const topArrow = UI.createElement("arrow", {
@@ -1338,8 +1350,8 @@ describe("multiple selection", () => {
 
     expect(boundArrow.x).toBeCloseTo(380 * scaleX);
     expect(boundArrow.y).toBeCloseTo(240 * scaleY);
-    expect(boundArrow.points[1][0]).toBeCloseTo(-60 * scaleX);
-    expect(boundArrow.points[1][1]).toBeCloseTo(-80 * scaleY);
+    expect(boundArrow.points[1][0]).toBeCloseTo(59.7979);
+    expect(boundArrow.points[1][1]).toBeCloseTo(-79.7305);
 
     expect(arrowLabelPos.x + arrowLabel.width / 2).toBeCloseTo(
       boundArrow.x + boundArrow.points[1][0] / 2,

packages/excalidraw/actions/actionCanvas.tsx

@@ -51,7 +51,7 @@ import { register } from "./register";
 
 import type { AppState, Offsets } from "../types";
 
-export const actionChangeViewBackgroundColor = register({
+export const actionChangeViewBackgroundColor = register<Partial<AppState>>({
   name: "changeViewBackgroundColor",
   label: "labels.canvasBackground",
   trackEvent: false,
@@ -64,7 +64,7 @@ export const actionChangeViewBackgroundColor = register({
   perform: (_, appState, value) => {
     return {
       appState: { ...appState, ...value },
-      captureUpdate: !!value.viewBackgroundColor
+      captureUpdate: !!value?.viewBackgroundColor
         ? CaptureUpdateAction.IMMEDIATELY
         : CaptureUpdateAction.EVENTUALLY,
     };
@@ -466,7 +466,7 @@ export const actionZoomToFit = register({
     !event[KEYS.CTRL_OR_CMD],
 });
 
-export const actionToggleTheme = register({
+export const actionToggleTheme = register<AppState["theme"]>({
   name: "toggleTheme",
   label: (_, appState) => {
     return appState.theme === THEME.DARK
@@ -474,7 +474,8 @@ export const actionToggleTheme = register({
       : "buttons.darkMode";
   },
   keywords: ["toggle", "dark", "light", "mode", "theme"],
-  icon: (appState) => (appState.theme === THEME.LIGHT ? MoonIcon : SunIcon),
+  icon: (appState, elements) =>
+    appState.theme === THEME.LIGHT ? MoonIcon : SunIcon,
   viewMode: true,
   trackEvent: { category: "canvas" },
   perform: (_, appState, value) => {

packages/excalidraw/actions/actionClipboard.tsx

@@ -20,12 +20,12 @@ import { t } from "../i18n";
 import { actionDeleteSelected } from "./actionDeleteSelected";
 import { register } from "./register";
 
-export const actionCopy = register({
+export const actionCopy = register<ClipboardEvent | null>({
   name: "copy",
   label: "labels.copy",
   icon: DuplicateIcon,
   trackEvent: { category: "element" },
-  perform: async (elements, appState, event: ClipboardEvent | null, app) => {
+  perform: async (elements, appState, event, app) => {
     const elementsToCopy = app.scene.getSelectedElements({
       selectedElementIds: appState.selectedElementIds,
       includeBoundTextElement: true,
@@ -109,12 +109,12 @@ export const actionPaste = register({
   keyTest: undefined,
 });
 
-export const actionCut = register({
+export const actionCut = register<ClipboardEvent | null>({
   name: "cut",
   label: "labels.cut",
   icon: cutIcon,
   trackEvent: { category: "element" },
-  perform: (elements, appState, event: ClipboardEvent | null, app) => {
+  perform: (elements, appState, event, app) => {
     actionCopy.perform(elements, appState, event, app);
     return actionDeleteSelected.perform(elements, appState, null, app);
   },

packages/excalidraw/actions/actionDeleteSelected.tsx

@@ -212,12 +212,8 @@ export const actionDeleteSelected = register({
   trackEvent: { category: "element", action: "delete" },
   perform: (elements, appState, formData, app) => {
     if (appState.selectedLinearElement?.isEditing) {
-      const {
-        elementId,
-        selectedPointsIndices,
-        startBindingElement,
-        endBindingElement,
-      } = appState.selectedLinearElement;
+      const { elementId, selectedPointsIndices } =
+        appState.selectedLinearElement;
       const elementsMap = app.scene.getNonDeletedElementsMap();
       const linearElement = LinearElementEditor.getElement(
         elementId,
@@ -254,19 +250,6 @@ export const actionDeleteSelected = register({
         };
       }
 
-      // We cannot do this inside `movePoint` because it is also called
-      // when deleting the uncommitted point (which hasn't caused any binding)
-      const binding = {
-        startBindingElement: selectedPointsIndices?.includes(0)
-          ? null
-          : startBindingElement,
-        endBindingElement: selectedPointsIndices?.includes(
-          linearElement.points.length - 1,
-        )
-          ? null
-          : endBindingElement,
-      };
-
       LinearElementEditor.deletePoints(
         linearElement,
         app,
@@ -279,7 +262,6 @@ export const actionDeleteSelected = register({
           ...appState,
           selectedLinearElement: {
             ...appState.selectedLinearElement,
-            ...binding,
             selectedPointsIndices:
               selectedPointsIndices?.[0] > 0
                 ? [selectedPointsIndices[0] - 1]
@@ -308,6 +290,7 @@ export const actionDeleteSelected = register({
           type: app.state.preferredSelectionTool.type,
         }),
         multiElement: null,
+        newElement: null,
         activeEmbeddable: null,
         selectedLinearElement: null,
       },

packages/excalidraw/actions/actionExport.tsx

@@ -31,7 +31,9 @@ import "../components/ToolIcon.scss";
 
 import { register } from "./register";
 
-export const actionChangeProjectName = register({
+import type { AppState } from "../types";
+
+export const actionChangeProjectName = register<AppState["name"]>({
   name: "changeProjectName",
   label: "labels.fileTitle",
   trackEvent: false,
@@ -51,7 +53,7 @@ export const actionChangeProjectName = register({
   ),
 });
 
-export const actionChangeExportScale = register({
+export const actionChangeExportScale = register<AppState["exportScale"]>({
   name: "changeExportScale",
   label: "imageExportDialog.scale",
   trackEvent: { category: "export", action: "scale" },
@@ -101,7 +103,9 @@ export const actionChangeExportScale = register({
   },
 });
 
-export const actionChangeExportBackground = register({
+export const actionChangeExportBackground = register<
+  AppState["exportBackground"]
+>({
   name: "changeExportBackground",
   label: "imageExportDialog.label.withBackground",
   trackEvent: { category: "export", action: "toggleBackground" },
@@ -121,7 +125,9 @@ export const actionChangeExportBackground = register({
   ),
 });
 
-export const actionChangeExportEmbedScene = register({
+export const actionChangeExportEmbedScene = register<
+  AppState["exportEmbedScene"]
+>({
   name: "changeExportEmbedScene",
   label: "imageExportDialog.tooltip.embedScene",
   trackEvent: { category: "export", action: "embedScene" },
@@ -288,7 +294,9 @@ export const actionLoadScene = register({
   keyTest: (event) => event[KEYS.CTRL_OR_CMD] && event.key === KEYS.O,
 });
 
-export const actionExportWithDarkMode = register({
+export const actionExportWithDarkMode = register<
+  AppState["exportWithDarkMode"]
+>({
   name: "exportWithDarkMode",
   label: "imageExportDialog.label.darkMode",
   trackEvent: { category: "export", action: "toggleTheme" },

packages/excalidraw/actions/actionFinalize.tsx

@@ -1,10 +1,6 @@
 import { pointFrom } from "@excalidraw/math";
 
-import {
-  maybeBindLinearElement,
-  bindOrUnbindLinearElement,
-  isBindingEnabled,
-} from "@excalidraw/element/binding";
+import { bindOrUnbindBindingElement } from "@excalidraw/element/binding";
 import {
   isValidPolygon,
   LinearElementEditor,
@@ -21,7 +17,8 @@ import {
 import {
   KEYS,
   arrayToMap,
-  tupleToCoors,
+  invariant,
+  shouldRotateWithDiscreteAngle,
   updateActiveTool,
 } from "@excalidraw/common";
 import { isPathALoop } from "@excalidraw/element";
@@ -30,11 +27,12 @@ import { isInvisiblySmallElement } from "@excalidraw/element";
 
 import { CaptureUpdateAction } from "@excalidraw/element";
 
-import type { LocalPoint } from "@excalidraw/math";
+import type { GlobalPoint, LocalPoint } from "@excalidraw/math";
 import type {
   ExcalidrawElement,
   ExcalidrawLinearElement,
   NonDeleted,
+  PointsPositionUpdates,
 } from "@excalidraw/element/types";
 
 import { t } from "../i18n";
@@ -46,20 +44,37 @@ import { register } from "./register";
 
 import type { AppState } from "../types";
 
-export const actionFinalize = register({
+type FormData = {
+  event: PointerEvent;
+  sceneCoords: { x: number; y: number };
+};
+
+export const actionFinalize = register<FormData>({
   name: "finalize",
   label: "",
   trackEvent: false,
   perform: (elements, appState, data, app) => {
+    let newElements = elements;
     const { interactiveCanvas, focusContainer, scene } = app;
-    const { event, sceneCoords } =
-      (data as {
-        event?: PointerEvent;
-        sceneCoords?: { x: number; y: number };
-      }) ?? {};
     const elementsMap = scene.getNonDeletedElementsMap();
 
-    if (event && appState.selectedLinearElement) {
+    if (data && appState.selectedLinearElement) {
+      const { event, sceneCoords } = data;
+      const element = LinearElementEditor.getElement(
+        appState.selectedLinearElement.elementId,
+        elementsMap,
+      );
+
+      invariant(
+        element,
+        "Arrow element should exist if selectedLinearElement is set",
+      );
+
+      invariant(
+        sceneCoords,
+        "sceneCoords should be defined if actionFinalize is called with event",
+      );
+
       const linearElementEditor = LinearElementEditor.handlePointerUp(
         event,
         appState.selectedLinearElement,
@@ -67,19 +82,57 @@ export const actionFinalize = register({
         app.scene,
       );
 
-      const { startBindingElement, endBindingElement } = linearElementEditor;
-      const element = app.scene.getElement(linearElementEditor.elementId);
       if (isBindingElement(element)) {
-        bindOrUnbindLinearElement(
+        const newArrow = !!appState.newElement;
+
+        const selectedPointsIndices =
+          newArrow || !appState.selectedLinearElement.selectedPointsIndices
+            ? [element.points.length - 1] // New arrow creation
+            : appState.selectedLinearElement.selectedPointsIndices;
+
+        const draggedPoints: PointsPositionUpdates =
+          selectedPointsIndices.reduce((map, index) => {
+            map.set(index, {
+              point: LinearElementEditor.pointFromAbsoluteCoords(
+                element,
+                pointFrom<GlobalPoint>(sceneCoords.x, sceneCoords.y),
+                elementsMap,
+              ),
+            });
+
+            return map;
+          }, new Map()) ?? new Map();
+
+        bindOrUnbindBindingElement(
           element,
-          startBindingElement,
-          endBindingElement,
-          app.scene,
+          draggedPoints,
+          sceneCoords.x,
+          sceneCoords.y,
+          scene,
+          appState,
+          {
+            newArrow,
+            altKey: event.altKey,
+            angleLocked: shouldRotateWithDiscreteAngle(event),
+          },
         );
+      } else if (isLineElement(element)) {
+        if (
+          appState.selectedLinearElement?.isEditing &&
+          !appState.newElement &&
+          !isValidPolygon(element.points)
+        ) {
+          scene.mutateElement(element, {
+            polygon: false,
+          });
+        }
       }
 
       if (linearElementEditor !== appState.selectedLinearElement) {
-        let newElements = elements;
+        // `handlePointerUp()` updated the linear element instance,
+        // so filter out this element if it is too small,
+        // but do an update to all new elements anyway for undo/redo purposes.
+
         if (element && isInvisiblySmallElement(element)) {
           // TODO: #7348 in theory this gets recorded by the store, so the invisible elements could be restored by the undo/redo, which might be not what we would want
           newElements = newElements.map((el) => {
@@ -91,39 +144,8 @@ export const actionFinalize = register({
             return el;
           });
         }
-        return {
-          elements: newElements,
-          appState: {
-            selectedLinearElement: {
-              ...linearElementEditor,
-              selectedPointsIndices: null,
-            },
-            suggestedBindings: [],
-          },
-          captureUpdate: CaptureUpdateAction.IMMEDIATELY,
-        };
-      }
-    }
 
-    if (appState.selectedLinearElement?.isEditing) {
-      const { elementId, startBindingElement, endBindingElement } =
-        appState.selectedLinearElement;
-      const element = LinearElementEditor.getElement(elementId, elementsMap);
-
-      if (element) {
-        if (isBindingElement(element)) {
-          bindOrUnbindLinearElement(
-            element,
-            startBindingElement,
-            endBindingElement,
-            scene,
-          );
-        }
-        if (isLineElement(element) && !isValidPolygon(element.points)) {
-          scene.mutateElement(element, {
-            polygon: false,
-          });
-        }
+        const activeToolLocked = appState.activeTool?.locked;
 
         return {
           elements:
@@ -134,23 +156,31 @@ export const actionFinalize = register({
                   }
                   return el;
                 })
-              : undefined,
+              : newElements,
           appState: {
             ...appState,
             cursorButton: "up",
-            selectedLinearElement: new LinearElementEditor(
-              element,
-              arrayToMap(elementsMap),
-              false, // exit editing mode
-            ),
+            selectedLinearElement: activeToolLocked
+              ? null
+              : {
+                  ...linearElementEditor,
+                  selectedPointsIndices: null,
+                  isEditing: false,
+                  initialState: {
+                    ...linearElementEditor.initialState,
+                    lastClickedPoint: -1,
+                  },
+                },
+            selectionElement: null,
+            suggestedBinding: null,
+            newElement: null,
+            multiElement: null,
           },
           captureUpdate: CaptureUpdateAction.IMMEDIATELY,
         };
       }
     }
 
-    let newElements = elements;
-
     if (window.document.activeElement instanceof HTMLElement) {
       focusContainer();
     }
@@ -174,8 +204,14 @@ export const actionFinalize = register({
 
     if (element) {
       // pen and mouse have hover
-      if (appState.multiElement && element.type !== "freedraw") {
-        const { points, lastCommittedPoint } = element;
+      if (
+        appState.selectedLinearElement &&
+        appState.multiElement &&
+        element.type !== "freedraw" &&
+        appState.lastPointerDownWith !== "touch"
+      ) {
+        const { points } = element;
+        const { lastCommittedPoint } = appState.selectedLinearElement;
         if (
           !lastCommittedPoint ||
           points[points.length - 1] !== lastCommittedPoint
@@ -227,25 +263,6 @@ export const actionFinalize = register({
             polygon: false,
           });
         }
-
-        if (
-          isBindingElement(element) &&
-          !isLoop &&
-          element.points.length > 1 &&
-          isBindingEnabled(appState)
-        ) {
-          const coords =
-            sceneCoords ??
-            tupleToCoors(
-              LinearElementEditor.getPointAtIndexGlobalCoordinates(
-                element,
-                -1,
-                arrayToMap(elements),
-              ),
-            );
-
-          maybeBindLinearElement(element, appState, coords, scene);
-        }
       }
     }
 
@@ -271,6 +288,25 @@ export const actionFinalize = register({
       });
     }
 
+    let selectedLinearElement =
+      element && isLinearElement(element)
+        ? new LinearElementEditor(element, arrayToMap(newElements)) // To select the linear element when user has finished mutipoint editing
+        : appState.selectedLinearElement;
+
+    selectedLinearElement = selectedLinearElement
+      ? {
+          ...selectedLinearElement,
+          isEditing: appState.newElement
+            ? false
+            : selectedLinearElement.isEditing,
+          initialState: {
+            ...selectedLinearElement.initialState,
+            lastClickedPoint: -1,
+            origin: null,
+          },
+        }
+      : selectedLinearElement;
+
     return {
       elements: newElements,
       appState: {
@@ -288,7 +324,7 @@ export const actionFinalize = register({
         multiElement: null,
         editingTextElement: null,
         startBoundElement: null,
-        suggestedBindings: [],
+        suggestedBinding: null,
         selectedElementIds:
           element &&
           !appState.activeTool.locked &&
@@ -298,11 +334,8 @@ export const actionFinalize = register({
                 [element.id]: true,
               }
             : appState.selectedElementIds,
-        // To select the linear element when user has finished mutipoint editing
-        selectedLinearElement:
-          element && isLinearElement(element)
-            ? new LinearElementEditor(element, arrayToMap(newElements))
-            : appState.selectedLinearElement,
+
+        selectedLinearElement,
       },
       // TODO: #7348 we should not capture everything, but if we don't, it leads to incosistencies -> revisit
       captureUpdate: CaptureUpdateAction.IMMEDIATELY,

packages/excalidraw/actions/actionFlip.test.tsx

@@ -38,15 +38,13 @@ describe("flipping re-centers selection", () => {
         height: 239.9,
         startBinding: {
           elementId: "rec1",
-          focus: 0,
-          gap: 5,
           fixedPoint: [0.49, -0.05],
+          mode: "orbit",
         },
         endBinding: {
           elementId: "rec2",
-          focus: 0,
-          gap: 5,
           fixedPoint: [-0.05, 0.49],
+          mode: "orbit",
         },
         startArrowhead: null,
         endArrowhead: "arrow",
@@ -74,11 +72,11 @@ describe("flipping re-centers selection", () => {
 
     const rec1 = h.elements.find((el) => el.id === "rec1")!;
     expect(rec1.x).toBeCloseTo(100, 0);
-    expect(rec1.y).toBeCloseTo(100, 0);
+    expect(rec1.y).toBeCloseTo(101, 0);
 
     const rec2 = h.elements.find((el) => el.id === "rec2")!;
     expect(rec2.x).toBeCloseTo(220, 0);
-    expect(rec2.y).toBeCloseTo(250, 0);
+    expect(rec2.y).toBeCloseTo(251, 0);
   });
 });
 
@@ -99,8 +97,8 @@ describe("flipping arrowheads", () => {
       endArrowhead: null,
       endBinding: {
         elementId: rect.id,
-        focus: 0.5,
-        gap: 5,
+        fixedPoint: [0.5, 0.5],
+        mode: "orbit",
       },
     });
 
@@ -139,13 +137,13 @@ describe("flipping arrowheads", () => {
       endArrowhead: "circle",
       startBinding: {
         elementId: rect.id,
-        focus: 0.5,
-        gap: 5,
+        fixedPoint: [0.5, 0.5],
+        mode: "orbit",
       },
       endBinding: {
         elementId: rect2.id,
-        focus: 0.5,
-        gap: 5,
+        fixedPoint: [0.5, 0.5],
+        mode: "orbit",
       },
     });
 
@@ -195,8 +193,8 @@ describe("flipping arrowheads", () => {
       endArrowhead: null,
       endBinding: {
         elementId: rect.id,
-        focus: 0.5,
-        gap: 5,
+        fixedPoint: [0.5, 0.5],
+        mode: "orbit",
       },
     });
 

packages/excalidraw/actions/actionFlip.ts

@@ -1,17 +1,10 @@
 import { getNonDeletedElements } from "@excalidraw/element";
-import {
-  bindOrUnbindLinearElements,
-  isBindingEnabled,
-} from "@excalidraw/element";
+import { bindOrUnbindBindingElements } from "@excalidraw/element";
 import { getCommonBoundingBox } from "@excalidraw/element";
 import { newElementWith } from "@excalidraw/element";
 import { deepCopyElement } from "@excalidraw/element";
 import { resizeMultipleElements } from "@excalidraw/element";
-import {
-  isArrowElement,
-  isElbowArrow,
-  isLinearElement,
-} from "@excalidraw/element";
+import { isArrowElement, isElbowArrow } from "@excalidraw/element";
 import { updateFrameMembershipOfSelectedElements } from "@excalidraw/element";
 import { CODES, KEYS, arrayToMap } from "@excalidraw/common";
 
@@ -103,7 +96,6 @@ const flipSelectedElements = (
   const updatedElements = flipElements(
     selectedElements,
     elementsMap,
-    appState,
     flipDirection,
     app,
   );
@@ -118,7 +110,6 @@ const flipSelectedElements = (
 const flipElements = (
   selectedElements: NonDeleted<ExcalidrawElement>[],
   elementsMap: NonDeletedSceneElementsMap,
-  appState: AppState,
   flipDirection: "horizontal" | "vertical",
   app: AppClassProperties,
 ): ExcalidrawElement[] => {
@@ -158,12 +149,10 @@ const flipElements = (
     },
   );
 
-  bindOrUnbindLinearElements(
-    selectedElements.filter(isLinearElement),
-    isBindingEnabled(appState),
-    [],
+  bindOrUnbindBindingElements(
+    selectedElements.filter(isArrowElement),
     app.scene,
-    appState.zoom,
+    app.state,
   );
 
   // ---------------------------------------------------------------------------

packages/excalidraw/actions/actionNavigate.tsx

@@ -2,6 +2,8 @@ import clsx from "clsx";
 
 import { CaptureUpdateAction } from "@excalidraw/element";
 
+import { invariant } from "@excalidraw/common";
+
 import { getClientColor } from "../clients";
 import { Avatar } from "../components/Avatar";
 import {
@@ -16,12 +18,17 @@ import { register } from "./register";
 import type { GoToCollaboratorComponentProps } from "../components/UserList";
 import type { Collaborator } from "../types";
 
-export const actionGoToCollaborator = register({
+export const actionGoToCollaborator = register<Collaborator>({
   name: "goToCollaborator",
   label: "Go to a collaborator",
   viewMode: true,
   trackEvent: { category: "collab" },
-  perform: (_elements, appState, collaborator: Collaborator) => {
+  perform: (_elements, appState, collaborator) => {
+    invariant(
+      collaborator,
+      "actionGoToCollaborator: collaborator should be defined when actionGoToCollaborator is called",
+    );
+
     if (
       !collaborator.socketId ||
       appState.userToFollow?.socketId === collaborator.socketId ||

packages/excalidraw/actions/actionProperties.tsx

@@ -1,4 +1,5 @@
 import { pointFrom } from "@excalidraw/math";
+
 import { useEffect, useMemo, useRef, useState } from "react";
 
 import {
@@ -20,12 +21,14 @@ import {
   getLineHeight,
   isTransparent,
   reduceToCommonValue,
+  invariant,
+  FONT_SIZES,
 } from "@excalidraw/common";
 
 import { canBecomePolygon, getNonDeletedElements } from "@excalidraw/element";
 
 import {
-  bindLinearElement,
+  bindBindingElement,
   calculateFixedPointForElbowArrowBinding,
   updateBoundElements,
 } from "@excalidraw/element";
@@ -59,7 +62,7 @@ import {
 
 import { deriveStylesPanelMode } from "@excalidraw/common";
 
-import type { LocalPoint } from "@excalidraw/math";
+import type { LocalPoint, Radians } from "@excalidraw/math";
 
 import type {
   Arrowhead,
@@ -306,13 +309,15 @@ const changeFontSize = (
 
 // -----------------------------------------------------------------------------
 
-export const actionChangeStrokeColor = register({
+export const actionChangeStrokeColor = register<
+  Pick<AppState, "currentItemStrokeColor">
+>({
   name: "changeStrokeColor",
   label: "labels.stroke",
   trackEvent: false,
   perform: (elements, appState, value) => {
     return {
-      ...(value.currentItemStrokeColor && {
+      ...(value?.currentItemStrokeColor && {
         elements: changeProperty(
           elements,
           appState,
@@ -330,7 +335,7 @@ export const actionChangeStrokeColor = register({
         ...appState,
         ...value,
       },
-      captureUpdate: !!value.currentItemStrokeColor
+      captureUpdate: !!value?.currentItemStrokeColor
         ? CaptureUpdateAction.IMMEDIATELY
         : CaptureUpdateAction.EVENTUALLY,
     };
@@ -366,12 +371,14 @@ export const actionChangeStrokeColor = register({
   },
 });
 
-export const actionChangeBackgroundColor = register({
+export const actionChangeBackgroundColor = register<
+  Pick<AppState, "currentItemBackgroundColor" | "viewBackgroundColor">
+>({
   name: "changeBackgroundColor",
   label: "labels.changeBackground",
   trackEvent: false,
   perform: (elements, appState, value, app) => {
-    if (!value.currentItemBackgroundColor) {
+    if (!value?.currentItemBackgroundColor) {
       return {
         appState: {
           ...appState,
@@ -451,7 +458,7 @@ export const actionChangeBackgroundColor = register({
   },
 });
 
-export const actionChangeFillStyle = register({
+export const actionChangeFillStyle = register<ExcalidrawElement["fillStyle"]>({
   name: "changeFillStyle",
   label: "labels.fill",
   trackEvent: false,
@@ -533,7 +540,9 @@ export const actionChangeFillStyle = register({
   },
 });
 
-export const actionChangeStrokeWidth = register({
+export const actionChangeStrokeWidth = register<
+  ExcalidrawElement["strokeWidth"]
+>({
   name: "changeStrokeWidth",
   label: "labels.strokeWidth",
   trackEvent: false,
@@ -589,7 +598,7 @@ export const actionChangeStrokeWidth = register({
   ),
 });
 
-export const actionChangeSloppiness = register({
+export const actionChangeSloppiness = register<ExcalidrawElement["roughness"]>({
   name: "changeSloppiness",
   label: "labels.sloppiness",
   trackEvent: false,
@@ -643,7 +652,9 @@ export const actionChangeSloppiness = register({
   ),
 });
 
-export const actionChangeStrokeStyle = register({
+export const actionChangeStrokeStyle = register<
+  ExcalidrawElement["strokeStyle"]
+>({
   name: "changeStrokeStyle",
   label: "labels.strokeStyle",
   trackEvent: false,
@@ -696,7 +707,7 @@ export const actionChangeStrokeStyle = register({
   ),
 });
 
-export const actionChangeOpacity = register({
+export const actionChangeOpacity = register<ExcalidrawElement["opacity"]>({
   name: "changeOpacity",
   label: "labels.opacity",
   trackEvent: false,
@@ -720,89 +731,100 @@ export const actionChangeOpacity = register({
   ),
 });
 
-export const actionChangeFontSize = register({
-  name: "changeFontSize",
-  label: "labels.fontSize",
-  trackEvent: false,
-  perform: (elements, appState, value, app) => {
-    return changeFontSize(elements, appState, app, () => value, value);
-  },
-  PanelComponent: ({ elements, appState, updateData, app, data }) => {
-    const { isCompact } = getStylesPanelInfo(app);
+export const actionChangeFontSize = register<ExcalidrawTextElement["fontSize"]>(
+  {
+    name: "changeFontSize",
+    label: "labels.fontSize",
+    trackEvent: false,
+    perform: (elements, appState, value, app) => {
+      return changeFontSize(
+        elements,
+        appState,
+        app,
+        () => {
+          invariant(value, "actionChangeFontSize: Expected a font size value");
+          return value;
+        },
+        value,
+      );
+    },
+    PanelComponent: ({ elements, appState, updateData, app, data }) => {
+      const { isCompact } = getStylesPanelInfo(app);
 
-    return (
-      <fieldset>
-        <legend>{t("labels.fontSize")}</legend>
-        <div className="buttonList">
-          <RadioSelection
-            group="font-size"
-            options={[
-              {
-                value: 16,
-                text: t("labels.small"),
-                icon: FontSizeSmallIcon,
-                testId: "fontSize-small",
-              },
-              {
-                value: 20,
-                text: t("labels.medium"),
-                icon: FontSizeMediumIcon,
-                testId: "fontSize-medium",
-              },
-              {
-                value: 28,
-                text: t("labels.large"),
-                icon: FontSizeLargeIcon,
-                testId: "fontSize-large",
-              },
-              {
-                value: 36,
-                text: t("labels.veryLarge"),
-                icon: FontSizeExtraLargeIcon,
-                testId: "fontSize-veryLarge",
-              },
-            ]}
-            value={getFormValue(
-              elements,
-              app,
-              (element) => {
-                if (isTextElement(element)) {
-                  return element.fontSize;
-                }
-                const boundTextElement = getBoundTextElement(
-                  element,
-                  app.scene.getNonDeletedElementsMap(),
+      return (
+        <fieldset>
+          <legend>{t("labels.fontSize")}</legend>
+          <div className="buttonList">
+            <RadioSelection
+              group="font-size"
+              options={[
+                {
+                  value: FONT_SIZES.sm,
+                  text: t("labels.small"),
+                  icon: FontSizeSmallIcon,
+                  testId: "fontSize-small",
+                },
+                {
+                  value: FONT_SIZES.md,
+                  text: t("labels.medium"),
+                  icon: FontSizeMediumIcon,
+                  testId: "fontSize-medium",
+                },
+                {
+                  value: FONT_SIZES.lg,
+                  text: t("labels.large"),
+                  icon: FontSizeLargeIcon,
+                  testId: "fontSize-large",
+                },
+                {
+                  value: FONT_SIZES.xl,
+                  text: t("labels.veryLarge"),
+                  icon: FontSizeExtraLargeIcon,
+                  testId: "fontSize-veryLarge",
+                },
+              ]}
+              value={getFormValue(
+                elements,
+                app,
+                (element) => {
+                  if (isTextElement(element)) {
+                    return element.fontSize;
+                  }
+                  const boundTextElement = getBoundTextElement(
+                    element,
+                    app.scene.getNonDeletedElementsMap(),
+                  );
+                  if (boundTextElement) {
+                    return boundTextElement.fontSize;
+                  }
+                  return null;
+                },
+                (element) =>
+                  isTextElement(element) ||
+                  getBoundTextElement(
+                    element,
+                    app.scene.getNonDeletedElementsMap(),
+                  ) !== null,
+                (hasSelection) =>
+                  hasSelection
+                    ? null
+                    : appState.currentItemFontSize || DEFAULT_FONT_SIZE,
+              )}
+              onChange={(value) => {
+                withCaretPositionPreservation(
+                  () => updateData(value),
+                  isCompact,
+                  !!appState.editingTextElement,
+                  data?.onPreventClose,
                 );
-                if (boundTextElement) {
-                  return boundTextElement.fontSize;
-                }
-                return null;
-              },
-              (element) =>
-                isTextElement(element) ||
-                getBoundTextElement(
-                  element,
-                  app.scene.getNonDeletedElementsMap(),
-                ) !== null,
-              (hasSelection) =>
-                hasSelection
-                  ? null
-                  : appState.currentItemFontSize || DEFAULT_FONT_SIZE,
-            )}
-            onChange={(value) => {
-              withCaretPositionPreservation(
-                () => updateData(value),
-                isCompact,
-                !!appState.editingTextElement,
-                data?.onPreventClose,
-              );
-            }}
-          />
-        </div>
-      </fieldset>
-    );
+              }}
+            />
+          </div>
+        </fieldset>
+      );
+    },
   },
-});
+);
 
 export const actionDecreaseFontSize = register({
   name: "decreaseFontSize",
@@ -862,7 +884,10 @@ type ChangeFontFamilyData = Partial<
   resetContainers?: true;
 };
 
-export const actionChangeFontFamily = register({
+export const actionChangeFontFamily = register<{
+  currentItemFontFamily: any;
+  currentHoveredFontFamily: any;
+}>({
   name: "changeFontFamily",
   label: "labels.fontFamily",
   trackEvent: false,
@@ -899,6 +924,8 @@ export const actionChangeFontFamily = register({
       };
     }
 
+    invariant(value, "actionChangeFontFamily: value must be defined");
+
     const { currentItemFontFamily, currentHoveredFontFamily } = value;
 
     let nextCaptureUpdateAction: CaptureUpdateActionType =
@@ -1241,7 +1268,7 @@ export const actionChangeFontFamily = register({
   },
 });
 
-export const actionChangeTextAlign = register({
+export const actionChangeTextAlign = register<TextAlign>({
   name: "changeTextAlign",
   label: "Change text alignment",
   trackEvent: false,
@@ -1342,7 +1369,7 @@ export const actionChangeTextAlign = register({
   },
 });
 
-export const actionChangeVerticalAlign = register({
+export const actionChangeVerticalAlign = register<VerticalAlign>({
   name: "changeVerticalAlign",
   label: "Change vertical alignment",
   trackEvent: { category: "element" },
@@ -1442,7 +1469,7 @@ export const actionChangeVerticalAlign = register({
   },
 });
 
-export const actionChangeRoundness = register({
+export const actionChangeRoundness = register<"sharp" | "round">({
   name: "changeRoundness",
   label: "Change edge roundness",
   trackEvent: false,
@@ -1599,15 +1626,16 @@ const getArrowheadOptions = (flip: boolean) => {
   ] as const;
 };
 
-export const actionChangeArrowhead = register({
+export const actionChangeArrowhead = register<{
+  position: "start" | "end";
+  type: Arrowhead;
+}>({
   name: "changeArrowhead",
   label: "Change arrowheads",
   trackEvent: false,
-  perform: (
-    elements,
-    appState,
-    value: { position: "start" | "end"; type: Arrowhead },
-  ) => {
+  perform: (elements, appState, value) => {
+    invariant(value, "actionChangeArrowhead: value must be defined");
+
     return {
       elements: changeProperty(elements, appState, (el) => {
         if (isLinearElement(el)) {
@@ -1702,7 +1730,7 @@ export const actionChangeArrowProperties = register({
   },
 });
 
-export const actionChangeArrowType = register({
+export const actionChangeArrowType = register<keyof typeof ARROW_TYPE>({
   name: "changeArrowType",
   label: "Change arrow types",
   trackEvent: false,
@@ -1711,7 +1739,20 @@ export const actionChangeArrowType = register({
       if (!isArrowElement(el)) {
         return el;
       }
+      const elementsMap = app.scene.getNonDeletedElementsMap();
+      const startPoint = LinearElementEditor.getPointAtIndexGlobalCoordinates(
+        el,
+        0,
+        elementsMap,
+      );
+      const endPoint = LinearElementEditor.getPointAtIndexGlobalCoordinates(
+        el,
+        -1,
+        elementsMap,
+      );
       let newElement = newElementWith(el, {
+        x: value === ARROW_TYPE.elbow ? startPoint[0] : el.x,
+        y: value === ARROW_TYPE.elbow ? startPoint[1] : el.y,
         roundness:
           value === ARROW_TYPE.round
             ? {
@@ -1719,9 +1760,31 @@ export const actionChangeArrowType = register({
               }
             : null,
         elbowed: value === ARROW_TYPE.elbow,
+        angle: value === ARROW_TYPE.elbow ? (0 as Radians) : el.angle,
         points:
           value === ARROW_TYPE.elbow || el.elbowed
-            ? [el.points[0], el.points[el.points.length - 1]]
+            ? [
+                LinearElementEditor.pointFromAbsoluteCoords(
+                  {
+                    ...el,
+                    x: startPoint[0],
+                    y: startPoint[1],
+                    angle: 0 as Radians,
+                  },
+                  startPoint,
+                  elementsMap,
+                ),
+                LinearElementEditor.pointFromAbsoluteCoords(
+                  {
+                    ...el,
+                    x: startPoint[0],
+                    y: startPoint[1],
+                    angle: 0 as Radians,
+                  },
+                  endPoint,
+                  elementsMap,
+                ),
+              ]
             : el.points,
       });
 
@@ -1803,7 +1866,13 @@ export const actionChangeArrowType = register({
             newElement.startBinding.elementId,
           ) as ExcalidrawBindableElement;
           if (startElement) {
-            bindLinearElement(newElement, startElement, "start", app.scene);
+            bindBindingElement(
+              newElement,
+              startElement,
+              appState.bindMode === "inside" ? "inside" : "orbit",
+              "start",
+              app.scene,
+            );
           }
         }
         if (newElement.endBinding) {
@@ -1811,7 +1880,13 @@ export const actionChangeArrowType = register({
             newElement.endBinding.elementId,
           ) as ExcalidrawBindableElement;
           if (endElement) {
-            bindLinearElement(newElement, endElement, "end", app.scene);
+            bindBindingElement(
+              newElement,
+              endElement,
+              appState.bindMode === "inside" ? "inside" : "orbit",
+              "end",
+              app.scene,
+            );
           }
         }
       }

packages/excalidraw/actions/register.ts

@@ -2,7 +2,12 @@ import type { Action } from "./types";
 
 export let actions: readonly Action[] = [];
 
-export const register = <T extends Action>(action: T) => {
+export const register = <
+  TData extends any,
+  T extends Action<TData> = Action<TData>,
+>(
+  action: T,
+) => {
   actions = actions.concat(action);
   return action as T & {
     keyTest?: unknown extends T["keyTest"] ? never : T["keyTest"];

packages/excalidraw/actions/types.ts

@@ -32,10 +32,10 @@ export type ActionResult =
     }
   | false;
 
-type ActionFn = (
+type ActionFn<TData = any> = (
   elements: readonly OrderedExcalidrawElement[],
   appState: Readonly<AppState>,
-  formData: any,
+  formData: TData | undefined,
   app: AppClassProperties,
 ) => ActionResult | Promise<ActionResult>;
 
@@ -157,7 +157,7 @@ export type PanelComponentProps = {
   ) => React.JSX.Element | null;
 };
 
-export interface Action {
+export interface Action<TData = any> {
   name: ActionName;
   label:
     | string
@@ -174,7 +174,7 @@ export interface Action {
         elements: readonly ExcalidrawElement[],
       ) => React.ReactNode);
   PanelComponent?: React.FC<PanelComponentProps>;
-  perform: ActionFn;
+  perform: ActionFn<TData>;
   keyPriority?: number;
   keyTest?: (
     event: React.KeyboardEvent | KeyboardEvent,

packages/excalidraw/appState.ts

@@ -100,7 +100,7 @@ export const getDefaultAppState = (): Omit<
       panels: STATS_PANELS.generalStats | STATS_PANELS.elementProperties,
     },
     startBoundElement: null,
-    suggestedBindings: [],
+    suggestedBinding: null,
     frameRendering: { enabled: true, clip: true, name: true, outline: true },
     frameToHighlight: null,
     editingFrame: null,
@@ -127,6 +127,7 @@ export const getDefaultAppState = (): Omit<
     searchMatches: null,
     lockedMultiSelections: {},
     activeLockedId: null,
+    bindMode: "orbit",
   };
 };
 
@@ -229,7 +230,7 @@ const APP_STATE_STORAGE_CONF = (<
   shouldCacheIgnoreZoom: { browser: true, export: false, server: false },
   stats: { browser: true, export: false, server: false },
   startBoundElement: { browser: false, export: false, server: false },
-  suggestedBindings: { browser: false, export: false, server: false },
+  suggestedBinding: { browser: false, export: false, server: false },
   frameRendering: { browser: false, export: false, server: false },
   frameToHighlight: { browser: false, export: false, server: false },
   editingFrame: { browser: false, export: false, server: false },
@@ -252,6 +253,7 @@ const APP_STATE_STORAGE_CONF = (<
   searchMatches: { browser: false, export: false, server: false },
   lockedMultiSelections: { browser: true, export: true, server: true },
   activeLockedId: { browser: false, export: false, server: false },
+  bindMode: { browser: true, export: false, server: false },
 });
 
 const _clearAppStateForStorage = <

packages/excalidraw/charts.ts

@@ -9,6 +9,7 @@ import {
   VERTICAL_ALIGN,
   randomId,
   isDevEnv,
+  FONT_SIZES,
 } from "@excalidraw/common";
 
 import {
@@ -213,7 +214,7 @@ const chartXLabels = (
         y: y + BAR_GAP / 2,
         width: BAR_WIDTH,
         angle: 5.87 as Radians,
-        fontSize: 16,
+        fontSize: FONT_SIZES.sm,
         textAlign: "center",
         verticalAlign: "top",
       });

packages/excalidraw/clipboard.ts

@@ -113,7 +113,6 @@ export const createPasteEvent = ({
       if (typeof value !== "string") {
         files = files || [];
         files.push(value);
-        event.clipboardData?.items.add(value);
         continue;
       }
       try {

packages/excalidraw/components/ColorPicker/ColorInput.tsx

@@ -1,7 +1,9 @@
 import clsx from "clsx";
 import { useCallback, useEffect, useRef, useState } from "react";
 
-import { KEYS } from "@excalidraw/common";
+import { isTransparent, KEYS } from "@excalidraw/common";
+
+import tinycolor from "tinycolor2";
 
 import { getShortcutKey } from "../..//shortcut";
 import { useAtom } from "../../editor-jotai";
@@ -10,18 +12,32 @@ import { useEditorInterface } from "../App";
 import { activeEyeDropperAtom } from "../EyeDropper";
 import { eyeDropperIcon } from "../icons";
 
-import { getColor } from "./ColorPicker";
 import { activeColorPickerSectionAtom } from "./colorPickerUtils";
 
 import type { ColorPickerType } from "./colorPickerUtils";
 
-interface ColorInputProps {
-  color: string;
-  onChange: (color: string) => void;
-  label: string;
-  colorPickerType: ColorPickerType;
-  placeholder?: string;
-}
+/**
+ * tries to keep the input color as-is if it's valid, making minimal adjustments
+ * (trimming whitespace or adding `#` to hex colors)
+ */
+export const normalizeInputColor = (color: string): string | null => {
+  color = color.trim();
+  if (isTransparent(color)) {
+    return color;
+  }
+
+  const tc = tinycolor(color);
+  if (tc.isValid()) {
+    // testing for `#` first fixes a bug on Electron (more specfically, an
+    // Obsidian popout window), where a hex color without `#` is considered valid
+    if (tc.getFormat() === "hex" && !color.startsWith("#")) {
+      return `#${color}`;
+    }
+    return color;
+  }
+
+  return null;
+};
 
 export const ColorInput = ({
   color,
@@ -29,7 +45,13 @@ export const ColorInput = ({
   label,
   colorPickerType,
   placeholder,
-}: ColorInputProps) => {
+}: {
+  color: string;
+  onChange: (color: string) => void;
+  label: string;
+  colorPickerType: ColorPickerType;
+  placeholder?: string;
+}) => {
   const editorInterface = useEditorInterface();
   const [innerValue, setInnerValue] = useState(color);
   const [activeSection, setActiveColorPickerSection] = useAtom(
@@ -43,7 +65,7 @@ export const ColorInput = ({
   const changeColor = useCallback(
     (inputValue: string) => {
       const value = inputValue.toLowerCase();
-      const color = getColor(value);
+      const color = normalizeInputColor(value);
 
       if (color) {
         onChange(color);

packages/excalidraw/components/ColorPicker/ColorPicker.tsx

@@ -5,7 +5,6 @@ import { useRef, useEffect } from "react";
 import {
   COLOR_OUTLINE_CONTRAST_THRESHOLD,
   COLOR_PALETTE,
-  isTransparent,
   isWritableElement,
 } from "@excalidraw/common";
 
@@ -38,27 +37,6 @@ import type { ColorPickerType } from "./colorPickerUtils";
 
 import type { AppState } from "../../types";
 
-const isValidColor = (color: string) => {
-  const style = new Option().style;
-  style.color = color;
-  return !!style.color;
-};
-
-export const getColor = (color: string): string | null => {
-  if (isTransparent(color)) {
-    return color;
-  }
-
-  // testing for `#` first fixes a bug on Electron (more specfically, an
-  // Obsidian popout window), where a hex color without `#` is (incorrectly)
-  // considered valid
-  return isValidColor(`#${color}`)
-    ? `#${color}`
-    : isValidColor(color)
-    ? color
-    : null;
-};
-
 interface ColorPickerProps {
   type: ColorPickerType;
   /**

packages/excalidraw/components/ColorPicker/colorPickerUtils.ts

@@ -1,4 +1,8 @@
-import { MAX_CUSTOM_COLORS_USED_IN_CANVAS } from "@excalidraw/common";
+import {
+  isTransparent,
+  MAX_CUSTOM_COLORS_USED_IN_CANVAS,
+  tinycolor,
+} from "@excalidraw/common";
 
 import type { ExcalidrawElement } from "@excalidraw/element/types";
 
@@ -108,48 +112,17 @@ export const isColorDark = (color: string, threshold = 160): boolean => {
     return true;
   }
 
-  if (color === "transparent") {
+  if (isTransparent(color)) {
     return false;
   }
 
-  // a string color (white etc) or any other format -> convert to rgb by way
-  // of creating a DOM node and retrieving the computeStyle
-  if (!color.startsWith("#")) {
-    const node = document.createElement("div");
-    node.style.color = color;
-
-    if (node.style.color) {
-      // making invisible so document doesn't reflow (hopefully).
-      // display=none works too, but supposedly not in all browsers
-      node.style.position = "absolute";
-      node.style.visibility = "hidden";
-      node.style.width = "0";
-      node.style.height = "0";
-
-      // needs to be in DOM else browser won't compute the style
-      document.body.appendChild(node);
-      const computedColor = getComputedStyle(node).color;
-      document.body.removeChild(node);
-      // computed style is in rgb() format
-      const rgb = computedColor
-        .replace(/^(rgb|rgba)\(/, "")
-        .replace(/\)$/, "")
-        .replace(/\s/g, "")
-        .split(",");
-      const r = parseInt(rgb[0]);
-      const g = parseInt(rgb[1]);
-      const b = parseInt(rgb[2]);
-
-      return calculateContrast(r, g, b) < threshold;
-    }
-    // invalid color -> assume it default to black
+  const tc = tinycolor(color);
+  if (!tc.isValid()) {
+    // invalid color -> assume it defaults to black
     return true;
   }
 
-  const r = parseInt(color.slice(1, 3), 16);
-  const g = parseInt(color.slice(3, 5), 16);
-  const b = parseInt(color.slice(5, 7), 16);
-
+  const { r, g, b } = tc.toRgb();
   return calculateContrast(r, g, b) < threshold;
 };
 

packages/excalidraw/components/CommandPalette/CommandPalette.tsx

@@ -1034,7 +1034,7 @@ const CommandItem = ({
             size="var(--icon-size, 1rem)"
             icon={
               typeof command.icon === "function"
-                ? command.icon(appState)
+                ? command.icon(appState, [])
                 : command.icon
             }
           />

packages/excalidraw/components/CommandPalette/types.ts

@@ -1,6 +1,5 @@
 import type { ActionManager } from "../../actions/manager";
 import type { Action } from "../../actions/types";
-import type { UIAppState } from "../../types";
 
 export type CommandPaletteItem = {
   label: string;
@@ -12,7 +11,7 @@ export type CommandPaletteItem = {
    * (deburred name + keywords)
    */
   haystack?: string;
-  icon?: React.ReactNode | ((appState: UIAppState) => React.ReactNode);
+  icon?: Action["icon"];
   category: string;
   order?: number;
   predicate?: boolean | Action["predicate"];

packages/excalidraw/components/ConvertElementTypePopup.tsx

@@ -844,7 +844,7 @@ const convertElementType = <
       }),
     ) as typeof element;
 
-    updateBindings(nextElement, app.scene);
+    updateBindings(nextElement, app.scene, app.state);
 
     return nextElement;
   }

packages/excalidraw/components/HintViewer.tsx

@@ -62,6 +62,20 @@ const getHints = ({
       shortcut: getTaggedShortcutKey("Alt"),
     });
   }
+
+  const selectedElements = app.scene.getSelectedElements(appState);
+
+  // creating or dragging arrow point
+  if (
+    appState.selectedLinearElement?.isDragging &&
+    selectedElements[0]?.type === "arrow"
+  ) {
+    return t("hints.arrowBindModifiers", {
+      shortcut_1: getTaggedShortcutKey("Ctrl"),
+      shortcut_2: getTaggedShortcutKey("Alt"),
+    });
+  }
+
   if (activeTool.type === "arrow" || activeTool.type === "line") {
     if (multiMode) {
       return t("hints.linearElementMulti", {
@@ -89,8 +103,6 @@ const getHints = ({
     return t("hints.embeddable");
   }
 
-  const selectedElements = app.scene.getSelectedElements(appState);
-
   if (
     isResizing &&
     lastPointerDownWith === "mouse" &&

packages/excalidraw/components/ImageExportDialog.tsx

@@ -40,9 +40,6 @@ import type { ActionManager } from "../actions/manager";
 
 import type { AppClassProperties, BinaryFiles, UIAppState } from "../types";
 
-const supportsContextFilters =
-  "filter" in document.createElement("canvas").getContext("2d")!;
-
 export const ErrorCanvasPreview = () => {
   return (
     <div>
@@ -230,25 +227,23 @@ const ImageExportModal = ({
             }}
           />
         </ExportSetting>
-        {supportsContextFilters && (
-          <ExportSetting
-            label={t("imageExportDialog.label.darkMode")}
+        <ExportSetting
+          label={t("imageExportDialog.label.darkMode")}
+          name="exportDarkModeSwitch"
+        >
+          <Switch
             name="exportDarkModeSwitch"
-          >
-            <Switch
-              name="exportDarkModeSwitch"
-              checked={exportDarkMode}
-              onChange={(checked) => {
-                setExportDarkMode(checked);
-                actionManager.executeAction(
-                  actionExportWithDarkMode,
-                  "ui",
-                  checked,
-                );
-              }}
-            />
-          </ExportSetting>
-        )}
+            checked={exportDarkMode}
+            onChange={(checked) => {
+              setExportDarkMode(checked);
+              actionManager.executeAction(
+                actionExportWithDarkMode,
+                "ui",
+                checked,
+              );
+            }}
+          />
+        </ExportSetting>
         <ExportSetting
           label={t("imageExportDialog.label.embedScene")}
           tooltip={t("imageExportDialog.tooltip.embedScene")}

packages/excalidraw/components/LayerUI.tsx

@@ -646,14 +646,8 @@ const LayerUI = ({
 };
 
 const stripIrrelevantAppStateProps = (appState: AppState): UIAppState => {
-  const {
-    suggestedBindings,
-    startBoundElement,
-    cursorButton,
-    scrollX,
-    scrollY,
-    ...ret
-  } = appState;
+  const { startBoundElement, cursorButton, scrollX, scrollY, ...ret } =
+    appState;
   return ret;
 };
 

packages/excalidraw/components/Stats/Angle.tsx

@@ -34,6 +34,7 @@ const handleDegreeChange: DragInputCallbackType<AngleProps["property"]> = ({
   shouldChangeByStepSize,
   nextValue,
   scene,
+  app,
 }) => {
   const elementsMap = scene.getNonDeletedElementsMap();
   const origElement = originalElements[0];
@@ -48,7 +49,7 @@ const handleDegreeChange: DragInputCallbackType<AngleProps["property"]> = ({
       scene.mutateElement(latestElement, {
         angle: nextAngle,
       });
-      updateBindings(latestElement, scene);
+      updateBindings(latestElement, scene, app.state);
 
       const boundTextElement = getBoundTextElement(latestElement, elementsMap);
       if (boundTextElement && !isArrowElement(latestElement)) {
@@ -74,7 +75,7 @@ const handleDegreeChange: DragInputCallbackType<AngleProps["property"]> = ({
     scene.mutateElement(latestElement, {
       angle: nextAngle,
     });
-    updateBindings(latestElement, scene);
+    updateBindings(latestElement, scene, app.state);
 
     const boundTextElement = getBoundTextElement(latestElement, elementsMap);
     if (boundTextElement && !isArrowElement(latestElement)) {

packages/excalidraw/components/Stats/MultiDimension.tsx

@@ -94,9 +94,7 @@ const resizeElementInGroup = (
   );
   if (boundTextElement) {
     const newFontSize = boundTextElement.fontSize * scale;
-    updateBoundElements(latestElement, scene, {
-      newSize: { width: updates.width, height: updates.height },
-    });
+    updateBoundElements(latestElement, scene);
     const latestBoundTextElement = elementsMap.get(boundTextElement.id);
     if (latestBoundTextElement && isTextElement(latestBoundTextElement)) {
       scene.mutateElement(latestBoundTextElement, {

packages/excalidraw/components/Stats/MultiPosition.tsx

@@ -38,6 +38,7 @@ const moveElements = (
   originalElements: readonly ExcalidrawElement[],
   originalElementsMap: ElementsMap,
   scene: Scene,
+  appState: AppState,
 ) => {
   for (let i = 0; i < originalElements.length; i++) {
     const origElement = originalElements[i];
@@ -63,6 +64,7 @@ const moveElements = (
       newTopLeftY,
       origElement,
       scene,
+      appState,
       originalElementsMap,
       false,
     );
@@ -75,6 +77,7 @@ const moveGroupTo = (
   originalElements: ExcalidrawElement[],
   originalElementsMap: ElementsMap,
   scene: Scene,
+  appState: AppState,
 ) => {
   const elementsMap = scene.getNonDeletedElementsMap();
   const [x1, y1, ,] = getCommonBounds(originalElements);
@@ -107,6 +110,7 @@ const moveGroupTo = (
         topLeftY + offsetY,
         origElement,
         scene,
+        appState,
         originalElementsMap,
         false,
       );
@@ -125,6 +129,7 @@ const handlePositionChange: DragInputCallbackType<
   property,
   scene,
   originalAppState,
+  app,
 }) => {
   const elementsMap = scene.getNonDeletedElementsMap();
 
@@ -152,6 +157,7 @@ const handlePositionChange: DragInputCallbackType<
           elementsInUnit.map((el) => el.original),
           originalElementsMap,
           scene,
+          app.state,
         );
       } else {
         const origElement = elementsInUnit[0]?.original;
@@ -178,6 +184,7 @@ const handlePositionChange: DragInputCallbackType<
             newTopLeftY,
             origElement,
             scene,
+            app.state,
             originalElementsMap,
             false,
           );
@@ -203,6 +210,7 @@ const handlePositionChange: DragInputCallbackType<
     originalElements,
     originalElementsMap,
     scene,
+    app.state,
   );
 
   scene.triggerUpdate();

packages/excalidraw/components/Stats/Position.tsx

@@ -34,6 +34,7 @@ const handlePositionChange: DragInputCallbackType<"x" | "y"> = ({
   property,
   scene,
   originalAppState,
+  app,
 }) => {
   const elementsMap = scene.getNonDeletedElementsMap();
   const origElement = originalElements[0];
@@ -131,6 +132,7 @@ const handlePositionChange: DragInputCallbackType<"x" | "y"> = ({
       newTopLeftY,
       origElement,
       scene,
+      app.state,
       originalElementsMap,
     );
     return;
@@ -162,6 +164,7 @@ const handlePositionChange: DragInputCallbackType<"x" | "y"> = ({
     newTopLeftY,
     origElement,
     scene,
+    app.state,
     originalElementsMap,
   );
 };

packages/excalidraw/components/Stats/index.tsx

@@ -6,7 +6,7 @@ import { useEffect, useMemo, useState, memo } from "react";
 import { STATS_PANELS } from "@excalidraw/common";
 import { getCommonBounds } from "@excalidraw/element";
 import { getUncroppedWidthAndHeight } from "@excalidraw/element";
-import { isElbowArrow, isImageElement } from "@excalidraw/element";
+import { isImageElement } from "@excalidraw/element";
 
 import { frameAndChildrenSelectedTogether } from "@excalidraw/element";
 
@@ -333,16 +333,14 @@ export const StatsInner = memo(
                           appState={appState}
                         />
                       </StatsRow>
-                      {!isElbowArrow(singleElement) && (
-                        <StatsRow>
-                          <Angle
-                            property="angle"
-                            element={singleElement}
-                            scene={scene}
-                            appState={appState}
-                          />
-                        </StatsRow>
-                      )}
+                      <StatsRow>
+                        <Angle
+                          property="angle"
+                          element={singleElement}
+                          scene={scene}
+                          appState={appState}
+                        />
+                      </StatsRow>
                       <StatsRow>
                         <FontSize
                           property="fontSize"

packages/excalidraw/components/Stats/stats.test.tsx

@@ -114,7 +114,7 @@ describe("binding with linear elements", () => {
     mouse.up(200, 100);
 
     UI.clickTool("arrow");
-    mouse.down(5, 0);
+    mouse.down(-5, 0);
     mouse.up(300, 50);
 
     elementStats = stats?.querySelector("#elementStats");
@@ -135,18 +135,7 @@ describe("binding with linear elements", () => {
     ) as HTMLInputElement;
     expect(linear.startBinding).not.toBe(null);
     expect(inputX).not.toBeNull();
-    UI.updateInput(inputX, String("204"));
-    expect(linear.startBinding).not.toBe(null);
-  });
-
-  it("should remain bound to linear element on small angle change", async () => {
-    const linear = h.elements[1] as ExcalidrawLinearElement;
-    const inputAngle = UI.queryStatsProperty("A")?.querySelector(
-      ".drag-input",
-    ) as HTMLInputElement;
-
-    expect(linear.startBinding).not.toBe(null);
-    UI.updateInput(inputAngle, String("1"));
+    UI.updateInput(inputX, String("186"));
     expect(linear.startBinding).not.toBe(null);
   });
 
@@ -161,17 +150,6 @@ describe("binding with linear elements", () => {
     UI.updateInput(inputX, String("254"));
     expect(linear.startBinding).toBe(null);
   });
-
-  it("should remain bound to linear element on small angle change", async () => {
-    const linear = h.elements[1] as ExcalidrawLinearElement;
-    const inputAngle = UI.queryStatsProperty("A")?.querySelector(
-      ".drag-input",
-    ) as HTMLInputElement;
-
-    expect(linear.startBinding).not.toBe(null);
-    UI.updateInput(inputAngle, String("45"));
-    expect(linear.startBinding).toBe(null);
-  });
 });
 
 // single element

packages/excalidraw/components/Stats/utils.ts

@@ -1,6 +1,10 @@
 import { pointFrom, pointRotateRads } from "@excalidraw/math";
 
-import { getBoundTextElement } from "@excalidraw/element";
+import {
+  getBoundTextElement,
+  isBindingElement,
+  unbindBindingElement,
+} from "@excalidraw/element";
 import { isFrameLikeElement } from "@excalidraw/element";
 
 import {
@@ -12,6 +16,7 @@ import {
 import { getFrameChildren } from "@excalidraw/element";
 
 import { updateBindings } from "@excalidraw/element";
+import { DRAGGING_THRESHOLD } from "@excalidraw/common";
 
 import type { Radians } from "@excalidraw/math";
 
@@ -110,9 +115,25 @@ export const moveElement = (
   newTopLeftY: number,
   originalElement: ExcalidrawElement,
   scene: Scene,
+  appState: AppState,
   originalElementsMap: ElementsMap,
   shouldInformMutation = true,
 ) => {
+  if (
+    isBindingElement(originalElement) &&
+    (originalElement.startBinding || originalElement.endBinding)
+  ) {
+    if (
+      Math.abs(newTopLeftX - originalElement.x) < DRAGGING_THRESHOLD &&
+      Math.abs(newTopLeftY - originalElement.y) < DRAGGING_THRESHOLD
+    ) {
+      return;
+    }
+
+    unbindBindingElement(originalElement, "start", scene);
+    unbindBindingElement(originalElement, "end", scene);
+  }
+
   const elementsMap = scene.getNonDeletedElementsMap();
   const latestElement = elementsMap.get(originalElement.id);
   if (!latestElement) {
@@ -145,7 +166,7 @@ export const moveElement = (
     },
     { informMutation: shouldInformMutation, isDragging: false },
   );
-  updateBindings(latestElement, scene);
+  updateBindings(latestElement, scene, appState);
 
   const boundTextElement = getBoundTextElement(
     originalElement,
@@ -203,7 +224,7 @@ export const moveElement = (
         },
         { informMutation: shouldInformMutation, isDragging: false },
       );
-      updateBindings(latestChildElement, scene, {
+      updateBindings(latestChildElement, scene, appState, {
         simultaneouslyUpdated: originalChildren,
       });
     });

packages/excalidraw/components/TTDDialog/common.ts

@@ -101,6 +101,12 @@ export const convertMermaidToExcalidraw = async ({
       maxWidthOrHeight:
         Math.max(parent.offsetWidth, parent.offsetHeight) *
         window.devicePixelRatio,
+      appState: {
+        // TODO hack (will be refactored in TTD v2)
+        exportWithDarkMode: document
+          .querySelector(".excalidraw-container")
+          ?.classList.contains("theme--dark"),
+      },
     });
     // if converting to blob fails, there's some problem that will
     // likely prevent preview and export (e.g. canvas too big)

packages/excalidraw/components/canvases/InteractiveCanvas.tsx

@@ -157,6 +157,8 @@ const InteractiveCanvas = (props: InteractiveCanvasProps) => {
         remotePointerUserStates,
         selectionColor,
         renderScrollbars: props.renderScrollbars,
+        // NOTE not memoized on so we don't rerender on cursor move
+        lastViewportPosition: props.app.lastViewportPosition,
       },
       editorInterface: props.editorInterface,
       callback: props.renderInteractiveSceneCallback,
@@ -242,8 +244,9 @@ const getRelevantAppStateProps = (
   selectedGroupIds: appState.selectedGroupIds,
   selectedLinearElement: appState.selectedLinearElement,
   multiElement: appState.multiElement,
+  newElement: appState.newElement,
   isBindingEnabled: appState.isBindingEnabled,
-  suggestedBindings: appState.suggestedBindings,
+  suggestedBinding: appState.suggestedBinding,
   isRotating: appState.isRotating,
   elementsToHighlight: appState.elementsToHighlight,
   collaborators: appState.collaborators, // Necessary for collab. sessions
@@ -255,6 +258,10 @@ const getRelevantAppStateProps = (
   croppingElementId: appState.croppingElementId,
   searchMatches: appState.searchMatches,
   activeLockedId: appState.activeLockedId,
+  hoveredElementIds: appState.hoveredElementIds,
+  frameRendering: appState.frameRendering,
+  shouldCacheIgnoreZoom: appState.shouldCacheIgnoreZoom,
+  exportScale: appState.exportScale,
 });
 
 const areEqual = (

packages/excalidraw/components/canvases/StaticCanvas.tsx

@@ -99,6 +99,7 @@ const getRelevantAppStateProps = (appState: AppState): StaticCanvasAppState => {
     editingGroupId: appState.editingGroupId,
     currentHoveredFontFamily: appState.currentHoveredFontFamily,
     croppingElementId: appState.croppingElementId,
+    suggestedBinding: appState.suggestedBinding,
   };
 
   return relevantAppStateProps;

packages/excalidraw/components/hyperlink/helpers.ts

@@ -6,7 +6,7 @@ import { hitElementBoundingBox } from "@excalidraw/element";
 
 import type { GlobalPoint, Radians } from "@excalidraw/math";
 
-import type { Bounds } from "@excalidraw/element";
+import type { Bounds } from "@excalidraw/common";
 import type {
   ElementsMap,
   NonDeletedExcalidrawElement,

packages/excalidraw/css/styles.scss

@@ -106,6 +106,9 @@ body.excalidraw-cursor-resize * {
 
     &.interactive {
       z-index: var(--zIndex-interactiveCanvas);
+      // Apply theme filter only to interactive canvas for UI elements
+      // (resize handles, selection boxes, etc.)
+      filter: var(--theme-filter);
     }
 
     // Remove the main canvas from document flow to avoid resizeObserver
@@ -134,16 +137,6 @@ body.excalidraw-cursor-resize * {
     pointer-events: none;
   }
 
-  &.theme--dark {
-    // The percentage is inspired by
-    // https://material.io/design/color/dark-theme.html#properties, which
-    // recommends surface color of #121212, 93% yields #111111 for #FFF
-
-    canvas {
-      filter: var(--theme-filter);
-    }
-  }
-
   .FixedSideContainer {
     padding-top: var(--sat, 0);
     padding-right: var(--sar, 0);

packages/excalidraw/data/blob.ts

@@ -7,8 +7,6 @@ import {
   isPromiseLike,
 } from "@excalidraw/common";
 
-import { clearElementsForExport } from "@excalidraw/element";
-
 import type { ValueOf } from "@excalidraw/common/utility-types";
 import type { ExcalidrawElement, FileId } from "@excalidraw/element/types";
 
@@ -21,7 +19,11 @@ import { decodeSvgBase64Payload } from "../scene/export";
 import { base64ToString, stringToBase64, toByteString } from "./encode";
 import { nativeFileSystemSupported } from "./filesystem";
 import { isValidExcalidrawData, isValidLibrary } from "./json";
-import { restore, restoreLibraryItems } from "./restore";
+import {
+  restoreAppState,
+  restoreElements,
+  restoreLibraryItems,
+} from "./restore";
 
 import type { AppState, DataURL, LibraryItem } from "../types";
 
@@ -157,10 +159,13 @@ export const loadSceneOrLibraryFromBlob = async (
     if (isValidExcalidrawData(data)) {
       return {
         type: MIME_TYPES.excalidraw,
-        data: restore(
-          {
-            elements: clearElementsForExport(data.elements || []),
-            appState: {
+        data: {
+          elements: restoreElements(data.elements, localElements, {
+            repairBindings: true,
+            deleteInvisibleElements: true,
+          }),
+          appState: restoreAppState(
+            {
               theme: localAppState?.theme,
               fileHandle: fileHandle || blob.handle || null,
               ...cleanAppStateForExport(data.appState || {}),
@@ -168,16 +173,10 @@ export const loadSceneOrLibraryFromBlob = async (
                 ? calculateScrollCenter(data.elements || [], localAppState)
                 : {}),
             },
-            files: data.files,
-          },
-          localAppState,
-          localElements,
-          {
-            repairBindings: true,
-            refreshDimensions: false,
-            deleteInvisibleElements: true,
-          },
-        ),
+            localAppState,
+          ),
+          files: data.files || {},
+        },
       };
     } else if (isValidLibrary(data)) {
       return {

packages/excalidraw/data/encode.ts

@@ -222,7 +222,7 @@ function dataView(
  *
  * @param buffers each buffer (chunk) must be at most 2^32 bits large (~4GB)
  */
-const concatBuffers = (...buffers: Uint8Array[]) => {
+const concatBuffers = (...buffers: Uint8Array[]): Uint8Array<ArrayBuffer> => {
   const bufferView = new Uint8Array(
     VERSION_DATAVIEW_BYTES +
       NEXT_CHUNK_SIZE_DATAVIEW_BYTES * buffers.length +
@@ -295,12 +295,12 @@ const splitBuffers = (concatenatedBuffer: Uint8Array) => {
 
 /** @private */
 const _encryptAndCompress = async (
-  data: Uint8Array | string,
+  data: Uint8Array<ArrayBuffer> | string,
   encryptionKey: string,
 ) => {
   const { encryptedBuffer, iv } = await encryptData(
     encryptionKey,
-    deflate(data),
+    deflate(data) as Uint8Array<ArrayBuffer>,
   );
 
   return { iv, buffer: new Uint8Array(encryptedBuffer) };
@@ -330,7 +330,7 @@ export const compressData = async <T extends Record<string, any> = never>(
     : {
         metadata: T;
       }),
-): Promise<Uint8Array> => {
+): Promise<Uint8Array<ArrayBuffer>> => {
   const fileInfo: FileEncodingInfo = {
     version: 2,
     compression: "pako@1",
@@ -355,8 +355,8 @@ export const compressData = async <T extends Record<string, any> = never>(
 
 /** @private */
 const _decryptAndDecompress = async (
-  iv: Uint8Array,
-  decryptedBuffer: Uint8Array,
+  iv: Uint8Array<ArrayBuffer>,
+  decryptedBuffer: Uint8Array<ArrayBuffer>,
   decryptionKey: string,
   isCompressed: boolean,
 ) => {