feat: switch between basic shapes (#9270)

* feat: switch between basic shapes

* add tab for testing

* style tweaks

* only show hint when a new node is created

* fix panel state

* refactor

* combine captures into one

* keep original font size

* switch multi

* switch different types altogether

* use tab only

* fix font size atom

* do not switch from active tool change

* prefer generic when mixed

* provide an optional direction when shape switching

* adjust panel bg & shadow

* redraw to correctly position text

* remove redundant code

* only tab to switch if focusing on app container

* limit which linear elements can be switched

* add shape switch to command palette

* remove hint

* cache initial panel position

* bend line to elbow if needed

* remove debug logic

* clean switch of arrows using app state

* safe conversion between line, sharp, curved, and elbow

* cache linear when panel shows up

* type safe element conversion

* rename type

* respect initial type when switching between linears

* fix elbow segment indexing

* use latest linear

* merge converted elbow points if too close

* focus on panel after click

* set roudness to null to fix drag points offset for elbows

* remove Mutable

* add arrowBoundToElement check

* make it dependent on one signle state

* unmount when not showing

* simpler types, tidy up code

* can change linear when it's linear + non-generic

* fix popup component lifecycle

* move constant to CLASSES

* DRY out type detection

* file & variable renaming

* refactor

* throw in not-prod instead

* simplify

* semi-fix bindings on `generic` type conversion

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/actions/actionToggleShapeSwitch.tsx

@@ -0,0 +1,34 @@
+import type { ExcalidrawElement } from "@excalidraw/element/types";
+
+import {
+  getConversionTypeFromElements,
+  convertElementTypePopupAtom,
+} from "../components/ConvertElementTypePopup";
+import { editorJotaiStore } from "../editor-jotai";
+import { CaptureUpdateAction } from "../store";
+
+import { register } from "./register";
+
+export const actionToggleShapeSwitch = register({
+  name: "toggleShapeSwitch",
+  label: "labels.shapeSwitch",
+  icon: () => null,
+  viewMode: true,
+  trackEvent: {
+    category: "shape_switch",
+    action: "toggle",
+  },
+  keywords: ["change", "switch", "swap"],
+  perform(elements, appState, _, app) {
+    editorJotaiStore.set(convertElementTypePopupAtom, {
+      type: "panel",
+    });
+
+    return {
+      captureUpdate: CaptureUpdateAction.NEVER,
+    };
+  },
+  checked: (appState) => appState.gridModeEnabled,
+  predicate: (elements, appState, props) =>
+    getConversionTypeFromElements(elements as ExcalidrawElement[]) !== null,
+});

packages/excalidraw/actions/types.ts

@@ -140,7 +140,8 @@ export type ActionName =
   | "linkToElement"
   | "cropEditor"
   | "wrapSelectionInFrame"
-  | "toggleLassoTool";
+  | "toggleLassoTool"
+  | "toggleShapeSwitch";
 
 export type PanelComponentProps = {
   elements: readonly ExcalidrawElement[];
@@ -195,7 +196,8 @@ export interface Action {
           | "menu"
           | "collab"
           | "hyperlink"
-          | "search_menu";
+          | "search_menu"
+          | "shape_switch";
         action?: string;
         predicate?: (
           appState: Readonly<AppState>,