build(deps): bump ejs from 3.1.9 to 3.1.10

Bumps [ejs](https://github.com/mde/ejs) from 3.1.9 to 3.1.10.
- [Release notes](https://github.com/mde/ejs/releases)
- [Commits](https://github.com/mde/ejs/compare/v3.1.9...v3.1.10)

---
updated-dependencies:
- dependency-name: ejs
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

dev-docs/docs/@excalidraw/excalidraw/api/props/excalidraw-api.mdx

@@ -115,7 +115,7 @@ function App() {
       <button className="custom-button" onClick={updateScene}>
         Update Scene
       </button>
-      <Excalidraw ref={(api) => setExcalidrawAPI(api)} />
+      <Excalidraw excalidrawAPI={(api) => setExcalidrawAPI(api)} />
     </div>
   );
 }
@@ -188,7 +188,7 @@ function App() {
         Update Library
       </button>
       <Excalidraw
-        ref={(api) => setExcalidrawAPI(api)}
+        excalidrawAPI={(api) => setExcalidrawAPI(api)}
         // initial data retrieved from https://github.com/excalidraw/excalidraw/blob/master/dev-docs/packages/excalidraw/initialData.js
         initialData={{
           libraryItems: initialData.libraryItems,

excalidraw-app/App.tsx

@@ -26,7 +26,9 @@ import {
   LiveCollaborationTrigger,
   TTDDialog,
   TTDDialogTrigger,
-} from "../packages/excalidraw/index";
+  StoreAction,
+  reconcileElements,
+} from "../packages/excalidraw";
 import {
   AppState,
   ExcalidrawImperativeAPI,
@@ -106,10 +108,7 @@ import { OverwriteConfirmDialog } from "../packages/excalidraw/components/Overwr
 import Trans from "../packages/excalidraw/components/Trans";
 import { ShareDialog, shareDialogStateAtom } from "./share/ShareDialog";
 import CollabError, { collabErrorIndicatorAtom } from "./collab/CollabError";
-import {
-  RemoteExcalidrawElement,
-  reconcileElements,
-} from "../packages/excalidraw/data/reconcile";
+import type { RemoteExcalidrawElement } from "../packages/excalidraw/data/reconcile";
 import {
   CommandPalette,
   DEFAULT_CATEGORIES,
@@ -438,7 +437,7 @@ const ExcalidrawWrapper = () => {
             excalidrawAPI.updateScene({
               ...data.scene,
               ...restore(data.scene, null, null, { repairBindings: true }),
-              commitToStore: true,
+              storeAction: StoreAction.CAPTURE,
             });
           }
         });
@@ -469,6 +468,7 @@ const ExcalidrawWrapper = () => {
           setLangCode(langCode);
           excalidrawAPI.updateScene({
             ...localDataState,
+            storeAction: StoreAction.UPDATE,
           });
           LibraryIndexedDBAdapter.load().then((data) => {
             if (data) {
@@ -604,6 +604,7 @@ const ExcalidrawWrapper = () => {
           if (didChange) {
             excalidrawAPI.updateScene({
               elements,
+              storeAction: StoreAction.UPDATE,
             });
           }
         }

excalidraw-app/collab/Collab.tsx

@@ -13,10 +13,12 @@ import {
   OrderedExcalidrawElement,
 } from "../../packages/excalidraw/element/types";
 import {
+  StoreAction,
   getSceneVersion,
   restoreElements,
   zoomToFitBounds,
-} from "../../packages/excalidraw/index";
+  reconcileElements,
+} from "../../packages/excalidraw";
 import { Collaborator, Gesture } from "../../packages/excalidraw/types";
 import {
   assertNever,
@@ -79,10 +81,9 @@ import { Mutable, ValueOf } from "../../packages/excalidraw/utility-types";
 import { getVisibleSceneBounds } from "../../packages/excalidraw/element/bounds";
 import { withBatchedUpdates } from "../../packages/excalidraw/reactUtils";
 import { collabErrorIndicatorAtom } from "./CollabError";
-import {
+import type {
   ReconciledExcalidrawElement,
   RemoteExcalidrawElement,
-  reconcileElements,
 } from "../../packages/excalidraw/data/reconcile";
 
 export const collabAPIAtom = atom<CollabAPI | null>(null);
@@ -356,6 +357,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
 
       this.excalidrawAPI.updateScene({
         elements,
+        storeAction: StoreAction.UPDATE,
       });
     }
   };
@@ -506,6 +508,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       // to database even if deleted before creating the room.
       this.excalidrawAPI.updateScene({
         elements,
+        storeAction: StoreAction.UPDATE,
       });
 
       this.saveCollabRoomToFirebase(getSyncableElements(elements));
@@ -743,6 +746,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   ) => {
     this.excalidrawAPI.updateScene({
       elements,
+      storeAction: StoreAction.UPDATE,
     });
 
     this.loadImageFiles();

excalidraw-app/collab/Portal.tsx

@@ -19,6 +19,7 @@ import throttle from "lodash.throttle";
 import { newElementWith } from "../../packages/excalidraw/element/mutateElement";
 import { encryptData } from "../../packages/excalidraw/data/encryption";
 import type { Socket } from "socket.io-client";
+import { StoreAction } from "../../packages/excalidraw";
 
 class Portal {
   collab: TCollabClass;
@@ -127,6 +128,7 @@ class Portal {
           }
           return element;
         }),
+      storeAction: StoreAction.UPDATE,
     });
   }, FILE_UPLOAD_TIMEOUT);
 

excalidraw-app/data/FileManager.ts

@@ -1,3 +1,4 @@
+import { StoreAction } from "../../packages/excalidraw";
 import { compressData } from "../../packages/excalidraw/data/encode";
 import { newElementWith } from "../../packages/excalidraw/element/mutateElement";
 import { isInitializedImageElement } from "../../packages/excalidraw/element/typeChecks";
@@ -238,5 +239,6 @@ export const updateStaleImageStatuses = (params: {
         }
         return element;
       }),
+    storeAction: StoreAction.UPDATE,
   });
 };

excalidraw-app/data/firebase.ts

@@ -1,3 +1,4 @@
+import { reconcileElements } from "../../packages/excalidraw";
 import {
   ExcalidrawElement,
   FileId,
@@ -22,10 +23,7 @@ import { MIME_TYPES } from "../../packages/excalidraw/constants";
 import { getSyncableElements, SyncableExcalidrawElement } from ".";
 import { ResolutionType } from "../../packages/excalidraw/utility-types";
 import type { Socket } from "socket.io-client";
-import {
-  RemoteExcalidrawElement,
-  reconcileElements,
-} from "../../packages/excalidraw/data/reconcile";
+import type { RemoteExcalidrawElement } from "../../packages/excalidraw/data/reconcile";
 
 // private
 // -----------------------------------------------------------------------------

excalidraw-app/data/index.ts

@@ -269,7 +269,6 @@ export const loadScene = async (
     // in the scene database/localStorage, and instead fetch them async
     // from a different database
     files: data.files,
-    commitToStore: false,
   };
 };
 

excalidraw-app/tests/collab.test.tsx

@@ -12,7 +12,7 @@ import {
   createRedoAction,
   createUndoAction,
 } from "../../packages/excalidraw/actions/actionHistory";
-import { newElementWith } from "../../packages/excalidraw";
+import { StoreAction, newElementWith } from "../../packages/excalidraw";
 
 const { h } = window;
 
@@ -90,7 +90,7 @@ describe("collaboration", () => {
 
     updateSceneData({
       elements: syncInvalidIndices([rect1, rect2]),
-      commitToStore: true,
+      storeAction: StoreAction.CAPTURE,
     });
 
     updateSceneData({
@@ -98,7 +98,7 @@ describe("collaboration", () => {
         rect1,
         newElementWith(h.elements[1], { isDeleted: true }),
       ]),
-      commitToStore: true,
+      storeAction: StoreAction.CAPTURE,
     });
 
     await waitFor(() => {
@@ -145,6 +145,7 @@ describe("collaboration", () => {
     // simulate force deleting the element remotely
     updateSceneData({
       elements: syncInvalidIndices([rect1]),
+      storeAction: StoreAction.UPDATE,
     });
 
     await waitFor(() => {
@@ -182,7 +183,7 @@ describe("collaboration", () => {
         h.elements[0],
         newElementWith(h.elements[1], { x: 100 }),
       ]),
-      commitToStore: true,
+      storeAction: StoreAction.CAPTURE,
     });
 
     await waitFor(() => {
@@ -217,6 +218,7 @@ describe("collaboration", () => {
     // simulate force deleting the element remotely
     updateSceneData({
       elements: syncInvalidIndices([rect1]),
+      storeAction: StoreAction.UPDATE,
     });
 
     // snapshot was correctly updated and marked the element as deleted

package.json

@@ -26,8 +26,8 @@
     "@types/chai": "4.3.0",
     "@types/jest": "27.4.0",
     "@types/lodash.throttle": "4.1.7",
-    "@types/react": "18.0.15",
-    "@types/react-dom": "18.0.6",
+    "@types/react": "18.2.0",
+    "@types/react-dom": "18.2.0",
     "@types/socket.io-client": "3.0.0",
     "@vitejs/plugin-react": "3.1.0",
     "@vitest/coverage-v8": "0.33.0",
@@ -50,7 +50,7 @@
     "vite-plugin-ejs": "1.7.0",
     "vite-plugin-pwa": "0.17.4",
     "vite-plugin-svgr": "2.4.0",
-    "vitest": "1.0.1",
+    "vitest": "1.5.3",
     "vitest-canvas-mock": "0.3.2"
   },
   "engines": {

packages/excalidraw/CHANGELOG.md

@@ -35,9 +35,13 @@ Please add the latest change on the top under the correct section.
 
 ### Breaking Changes
 
-- Renamed required `updatedScene` parameter from `commitToHistory` into `commitToStore` [#7348](https://github.com/excalidraw/excalidraw/pull/7348).
+- `updateScene` API has changed due to the added `Store` component as part of the multiplayer undo / redo initiative. Specifically, `sceneData` property `commitToHistory: boolean` was replaced with `storeAction: StoreActionType`. Make sure to update all instances of `updateScene` according to the _before / after_ table below. [#7898](https://github.com/excalidraw/excalidraw/pull/7898)
 
-### Breaking Changes
+|  | Before `commitToHistory` | After `storeAction` | Notes |
+| --- | --- | --- | --- |
+| _Immediately undoable_ | `true` | `"capture"` | As before, use for all updates which should be recorded by the store & history. Should be used for the most of the local updates. These updates will _immediately_ make it to the local undo / redo stacks. |
+| _Eventually undoable_ | `false` | `"none"` | Similar to before, use for all updates which should not be recorded immediately (likely exceptions which are part of some async multi-step process) or those not meant to be recorded at all (i.e. updates to `collaborators` object, parts of `AppState` which are not observed by the store & history - not `ObservedAppState`).<br/><br/>**IMPORTANT** It's likely you should switch to `"update"` in all the other cases. Otherwise, all such updates would end up being recorded with the next `"capture"` - triggered either by the next `updateScene` or internally by the editor. These updates will _eventually_ make it to the local undo / redo stacks. |
+| _Never undoable_ | n/a | `"update"` | **NEW**: previously there was no equivalent for this value. Now, it's recommended to use `"update"` for all remote updates (from the other clients), scene initialization, or those updates, which should not be locally "undoable". These updates will _never_ make it to the local undo / redo stacks. |
 
 - `ExcalidrawEmbeddableElement.validated` was removed and moved to private editor state. This should largely not affect your apps unless you were reading from this attribute. We keep validating embeddable urls internally, and the public [`props.validateEmbeddable`](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/api/props#validateembeddable) still applies. [#7539](https://github.com/excalidraw/excalidraw/pull/7539)
 

packages/excalidraw/actions/actionFlip.ts

@@ -119,6 +119,7 @@ const flipElements = (
     elementsMap,
     "nw",
     true,
+    true,
     flipDirection === "horizontal" ? maxX : minX,
     flipDirection === "horizontal" ? minY : maxY,
   );

packages/excalidraw/actions/actionHistory.tsx

@@ -8,7 +8,7 @@ import { KEYS } from "../keys";
 import { arrayToMap } from "../utils";
 import { isWindows } from "../constants";
 import { SceneElementsMap } from "../element/types";
-import { IStore, StoreAction } from "../store";
+import { Store, StoreAction } from "../store";
 import { useEmitter } from "../hooks/useEmitter";
 
 const writeData = (
@@ -40,7 +40,7 @@ const writeData = (
   return { storeAction: StoreAction.NONE };
 };
 
-type ActionCreator = (history: History, store: IStore) => Action;
+type ActionCreator = (history: History, store: Store) => Action;
 
 export const createUndoAction: ActionCreator = (history, store) => ({
   name: "undo",

packages/excalidraw/actions/types.ts

@@ -8,7 +8,7 @@ import {
   UIAppState,
 } from "../types";
 import { MarkOptional } from "../utility-types";
-import { StoreAction } from "../store";
+import { StoreActionType } from "../store";
 
 export type ActionSource =
   | "ui"
@@ -26,7 +26,7 @@ export type ActionResult =
         "offsetTop" | "offsetLeft" | "width" | "height"
       > | null;
       files?: BinaryFiles | null;
-      storeAction: keyof typeof StoreAction;
+      storeAction: StoreActionType;
       replaceFiles?: boolean;
     }
   | false;

packages/excalidraw/components/App.tsx

@@ -90,6 +90,7 @@ import {
   EDITOR_LS_KEYS,
   isIOS,
   supportsResizeObserver,
+  DEFAULT_COLLISION_THRESHOLD,
 } from "../constants";
 import { ExportedElements, exportCanvas, loadFromBlob } from "../data";
 import Library, { distributeLibraryItemsOnSquareGrid } from "../data/library";
@@ -183,7 +184,6 @@ import {
   ExcalidrawIframeElement,
   ExcalidrawEmbeddableElement,
   Ordered,
-  OrderedExcalidrawElement,
 } from "../element/types";
 import { getCenter, getDistance } from "../gesture";
 import {
@@ -412,7 +412,7 @@ import { ElementCanvasButton } from "./MagicButton";
 import { MagicIcon, copyIcon, fullscreenIcon } from "./icons";
 import { EditorLocalStorage } from "../data/EditorLocalStorage";
 import FollowMode from "./FollowMode/FollowMode";
-import { IStore, Store, StoreAction } from "../store";
+import { Store, StoreAction } from "../store";
 import { AnimationFrameHandler } from "../animation-frame-handler";
 import { AnimatedTrail } from "../animated-trail";
 import { LaserTrails } from "../laser-trails";
@@ -543,7 +543,7 @@ class App extends React.Component<AppProps, AppState> {
   public library: AppClassProperties["library"];
   public libraryItemsFromStorage: LibraryItems | undefined;
   public id: string;
-  private store: IStore;
+  private store: Store;
   private history: History;
   private excalidrawContainerValue: {
     container: HTMLDivElement | null;
@@ -1704,6 +1704,7 @@ class App extends React.Component<AppProps, AppState> {
                           }
                           scale={window.devicePixelRatio}
                           appState={this.state}
+                          device={this.device}
                           renderInteractiveSceneCallback={
                             this.renderInteractiveSceneCallback
                           }
@@ -2123,7 +2124,7 @@ class App extends React.Component<AppProps, AppState> {
               }
               return el;
             }),
-            commitToStore: true,
+            storeAction: StoreAction.CAPTURE,
           });
         }
       },
@@ -2810,7 +2811,7 @@ class App extends React.Component<AppProps, AppState> {
       );
     }
 
-    this.store.capture(elementsMap, this.state);
+    this.store.commit(elementsMap, this.state);
 
     // Do not notify consumers if we're still loading the scene. Among other
     // potential issues, this fixes a case where the tab isn't focused during
@@ -3683,51 +3684,39 @@ class App extends React.Component<AppProps, AppState> {
       elements?: SceneData["elements"];
       appState?: Pick<AppState, K> | null;
       collaborators?: SceneData["collaborators"];
-      commitToStore?: SceneData["commitToStore"];
+      /** @default StoreAction.CAPTURE */
+      storeAction?: SceneData["storeAction"];
     }) => {
       const nextElements = syncInvalidIndices(sceneData.elements ?? []);
 
-      if (sceneData.commitToStore) {
-        this.store.shouldCaptureIncrement();
-      }
+      if (sceneData.storeAction && sceneData.storeAction !== StoreAction.NONE) {
+        const prevCommittedAppState = this.store.snapshot.appState;
+        const prevCommittedElements = this.store.snapshot.elements;
 
-      if (sceneData.elements || sceneData.appState) {
-        let nextCommittedAppState = this.state;
-        let nextCommittedElements: Map<string, OrderedExcalidrawElement>;
+        const nextCommittedAppState = sceneData.appState
+          ? Object.assign({}, prevCommittedAppState, sceneData.appState) // new instance, with partial appstate applied to previously captured one, including hidden prop inside `prevCommittedAppState`
+          : prevCommittedAppState;
 
-        if (sceneData.appState) {
-          nextCommittedAppState = {
-            ...this.state,
-            ...sceneData.appState, // Here we expect just partial appState
-          };
-        }
+        const nextCommittedElements = sceneData.elements
+          ? this.store.filterUncomittedElements(
+              this.scene.getElementsMapIncludingDeleted(), // Only used to detect uncomitted local elements
+              arrayToMap(nextElements), // We expect all (already reconciled) elements
+            )
+          : prevCommittedElements;
 
-        const prevElements = this.scene.getElementsIncludingDeleted();
-
-        if (sceneData.elements) {
-          /**
-           * We need to schedule a snapshot update, as in case `commitToStore` is false  (i.e. remote update),
-           * as it's essential for computing local changes after the async action is completed (i.e. not to include remote changes in the diff).
-           *
-           * This is also a breaking change for all local `updateScene` calls without set `commitToStore` to true,
-           * as it makes such updates impossible to undo (previously they were undone coincidentally with the switch to the whole snapshot captured by the history).
-           *
-           * WARN: be careful here as moving it elsewhere could break the history for remote client without noticing
-           * - we need to find a way to test two concurrent client updates simultaneously, while having access to both stores & histories.
-           */
-          this.store.shouldUpdateSnapshot();
-
-          // TODO#7348: deprecate once exchanging just store increments between clients
-          nextCommittedElements = this.store.ignoreUncomittedElements(
-            arrayToMap(prevElements),
-            arrayToMap(nextElements),
+        // WARN: store action always performs deep clone of changed elements, for ephemeral remote updates (i.e. remote dragging, resizing, drawing) we might consider doing something smarter
+        // do NOT schedule store actions (execute after re-render), as it might cause unexpected concurrency issues if not handled well
+        if (sceneData.storeAction === StoreAction.CAPTURE) {
+          this.store.captureIncrement(
+            nextCommittedElements,
+            nextCommittedAppState,
+          );
+        } else if (sceneData.storeAction === StoreAction.UPDATE) {
+          this.store.updateSnapshot(
+            nextCommittedElements,
+            nextCommittedAppState,
           );
-        } else {
-          nextCommittedElements = arrayToMap(prevElements);
         }
-
-        // WARN: Performs deep clone of changed elements, for ephemeral remote updates (i.e. remote dragging, resizing, drawing) we might consider doing something smarter
-        this.store.capture(nextCommittedElements, nextCommittedAppState);
       }
 
       if (sceneData.appState) {
@@ -4179,6 +4168,11 @@ class App extends React.Component<AppProps, AppState> {
         originSnapOffset: null,
         activeEmbeddable: null,
       } as const;
+
+      if (nextActiveTool.type === "freedraw") {
+        this.store.shouldCaptureIncrement();
+      }
+
       if (nextActiveTool.type !== "selection") {
         return {
           ...prevState,
@@ -4536,7 +4530,7 @@ class App extends React.Component<AppProps, AppState> {
         shape: this.getElementShape(elementWithHighestZIndex),
         // when overlapping, we would like to be more precise
         // this also avoids the need to update past tests
-        threshold: this.getHitThreshold() / 2,
+        threshold: this.getElementHitThreshold() / 2,
         frameNameBound: isFrameLikeElement(elementWithHighestZIndex)
           ? this.frameNameBoundsCache.get(elementWithHighestZIndex)
           : null,
@@ -4599,8 +4593,8 @@ class App extends React.Component<AppProps, AppState> {
     return elements;
   }
 
-  private getHitThreshold() {
-    return 10 / this.state.zoom.value;
+  private getElementHitThreshold() {
+    return DEFAULT_COLLISION_THRESHOLD / this.state.zoom.value;
   }
 
   private hitElement(
@@ -4618,7 +4612,7 @@ class App extends React.Component<AppProps, AppState> {
       const selectionShape = getSelectionBoxShape(
         element,
         this.scene.getNonDeletedElementsMap(),
-        this.getHitThreshold(),
+        this.getElementHitThreshold(),
       );
 
       return isPointInShape([x, y], selectionShape);
@@ -4639,7 +4633,7 @@ class App extends React.Component<AppProps, AppState> {
       y,
       element,
       shape: this.getElementShape(element),
-      threshold: this.getHitThreshold(),
+      threshold: this.getElementHitThreshold(),
       frameNameBound: isFrameLikeElement(element)
         ? this.frameNameBoundsCache.get(element)
         : null,
@@ -4671,7 +4665,7 @@ class App extends React.Component<AppProps, AppState> {
           y,
           element: elements[index],
           shape: this.getElementShape(elements[index]),
-          threshold: this.getHitThreshold(),
+          threshold: this.getElementHitThreshold(),
         })
       ) {
         hitElement = elements[index];
@@ -4924,7 +4918,7 @@ class App extends React.Component<AppProps, AppState> {
             y: sceneY,
             element: container,
             shape: this.getElementShape(container),
-            threshold: this.getHitThreshold(),
+            threshold: this.getElementHitThreshold(),
           })
         ) {
           const midPoint = getContainerCenter(
@@ -5339,24 +5333,41 @@ class App extends React.Component<AppProps, AppState> {
       !isOverScrollBar &&
       !this.state.editingLinearElement
     ) {
-      const elementWithTransformHandleType = getElementWithTransformHandleType(
-        elements,
-        this.state,
-        scenePointerX,
-        scenePointerY,
-        this.state.zoom,
-        event.pointerType,
-        this.scene.getNonDeletedElementsMap(),
-      );
-      if (
-        elementWithTransformHandleType &&
-        elementWithTransformHandleType.transformHandleType
-      ) {
-        setCursor(
-          this.interactiveCanvas,
-          getCursorForResizingElement(elementWithTransformHandleType),
+      // for linear elements, we'd like to prioritize point dragging over edge resizing
+      // therefore, we update and check hovered point index first
+      if (this.state.selectedLinearElement) {
+        this.handleHoverSelectedLinearElement(
+          this.state.selectedLinearElement,
+          scenePointerX,
+          scenePointerY,
         );
-        return;
+      }
+
+      if (
+        !this.state.selectedLinearElement ||
+        this.state.selectedLinearElement.hoverPointIndex === -1
+      ) {
+        const elementWithTransformHandleType =
+          getElementWithTransformHandleType(
+            elements,
+            this.state,
+            scenePointerX,
+            scenePointerY,
+            this.state.zoom,
+            event.pointerType,
+            this.scene.getNonDeletedElementsMap(),
+            this.device,
+          );
+        if (
+          elementWithTransformHandleType &&
+          elementWithTransformHandleType.transformHandleType
+        ) {
+          setCursor(
+            this.interactiveCanvas,
+            getCursorForResizingElement(elementWithTransformHandleType),
+          );
+          return;
+        }
       }
     } else if (selectedElements.length > 1 && !isOverScrollBar) {
       const transformHandleType = getTransformHandleTypeFromCoords(
@@ -5365,6 +5376,7 @@ class App extends React.Component<AppProps, AppState> {
         scenePointerY,
         this.state.zoom,
         event.pointerType,
+        this.device,
       );
       if (transformHandleType) {
         setCursor(
@@ -5517,7 +5529,7 @@ class App extends React.Component<AppProps, AppState> {
       scenePointer.x,
       scenePointer.y,
     );
-    const threshold = this.getHitThreshold();
+    const threshold = this.getElementHitThreshold();
     const point = { ...pointerDownState.lastCoords };
     let samplingInterval = 0;
     while (samplingInterval <= distance) {
@@ -5614,7 +5626,7 @@ class App extends React.Component<AppProps, AppState> {
 
         if (hoverPointIndex >= 0 || segmentMidPointHoveredCoords) {
           setCursor(this.interactiveCanvas, CURSOR_TYPE.POINTER);
-        } else {
+        } else if (this.hitElement(scenePointerX, scenePointerY, element)) {
           setCursor(this.interactiveCanvas, CURSOR_TYPE.MOVE);
         }
       } else if (this.hitElement(scenePointerX, scenePointerY, element)) {
@@ -5704,6 +5716,7 @@ class App extends React.Component<AppProps, AppState> {
             this.state,
           ),
         },
+        storeAction: StoreAction.UPDATE,
       });
       return;
     }
@@ -6313,7 +6326,14 @@ class App extends React.Component<AppProps, AppState> {
       const elementsMap = this.scene.getNonDeletedElementsMap();
       const selectedElements = this.scene.getSelectedElements(this.state);
 
-      if (selectedElements.length === 1 && !this.state.editingLinearElement) {
+      if (
+        selectedElements.length === 1 &&
+        !this.state.editingLinearElement &&
+        !(
+          this.state.selectedLinearElement &&
+          this.state.selectedLinearElement.hoverPointIndex !== -1
+        )
+      ) {
         const elementWithTransformHandleType =
           getElementWithTransformHandleType(
             elements,
@@ -6323,6 +6343,7 @@ class App extends React.Component<AppProps, AppState> {
             this.state.zoom,
             event.pointerType,
             this.scene.getNonDeletedElementsMap(),
+            this.device,
           );
         if (elementWithTransformHandleType != null) {
           this.setState({
@@ -6338,6 +6359,7 @@ class App extends React.Component<AppProps, AppState> {
           pointerDownState.origin.y,
           this.state.zoom,
           event.pointerType,
+          this.device,
         );
       }
       if (pointerDownState.resize.handleType) {
@@ -6594,7 +6616,7 @@ class App extends React.Component<AppProps, AppState> {
     }
 
     // How many pixels off the shape boundary we still consider a hit
-    const threshold = this.getHitThreshold();
+    const threshold = this.getElementHitThreshold();
     const [x1, y1, x2, y2] = getCommonBounds(selectedElements);
     return (
       point.x > x1 - threshold &&
@@ -7993,6 +8015,7 @@ class App extends React.Component<AppProps, AppState> {
           appState: {
             draggingElement: null,
           },
+          storeAction: StoreAction.UPDATE,
         });
 
         return;
@@ -8165,6 +8188,7 @@ class App extends React.Component<AppProps, AppState> {
           elements: this.scene
             .getElementsIncludingDeleted()
             .filter((el) => el.id !== resizingElement.id),
+          storeAction: StoreAction.UPDATE,
         });
       }
 
@@ -8417,7 +8441,7 @@ class App extends React.Component<AppProps, AppState> {
               y: pointerDownState.origin.y,
               element: hitElement,
               shape: this.getElementShape(hitElement),
-              threshold: this.getHitThreshold(),
+              threshold: this.getElementHitThreshold(),
               frameNameBound: isFrameLikeElement(hitElement)
                 ? this.frameNameBoundsCache.get(hitElement)
                 : null,
@@ -8482,7 +8506,7 @@ class App extends React.Component<AppProps, AppState> {
               this,
             )
           : unbindLinearElements(
-              this.scene.getNonDeletedElements(),
+              this.scene.getSelectedElements(this.state),
               elementsMap,
             );
       }
@@ -9228,13 +9252,12 @@ class App extends React.Component<AppProps, AppState> {
       }
 
       if (ret.type === MIME_TYPES.excalidraw) {
-        // Restore the fractional indices by mutating elements and update the
-        // store snapshot, otherwise we would end up with duplicate indices
+        // restore the fractional indices by mutating elements
         syncInvalidIndices(elements.concat(ret.data.elements));
-        this.store.snapshot = this.store.snapshot.clone(
-          arrayToMap(elements),
-          this.state,
-        );
+
+        // update the store snapshot for old elements, otherwise we would end up with duplicated fractional indices on undo
+        this.store.updateSnapshot(arrayToMap(elements), this.state);
+
         this.setState({ isLoading: true });
         this.syncActionResult({
           ...ret.data,
@@ -9531,7 +9554,7 @@ class App extends React.Component<AppProps, AppState> {
         this.scene.getElementsMapIncludingDeleted(),
         shouldRotateWithDiscreteAngle(event),
         shouldResizeFromCenter(event),
-        selectedElements.length === 1 && isImageElement(selectedElements[0])
+        selectedElements.some((element) => isImageElement(element))
           ? !shouldMaintainAspectRatio(event)
           : shouldMaintainAspectRatio(event),
         resizeX,

packages/excalidraw/components/SVGLayer.scss

@@ -1,3 +1,5 @@
+@import "../css/variables.module.scss";
+
 .excalidraw {
   .SVGLayer {
     pointer-events: none;
@@ -7,7 +9,7 @@
     top: 0;
     left: 0;
 
-    z-index: 2;
+    z-index: var(--zIndex-svgLayer);
 
     & svg {
       image-rendering: auto;

packages/excalidraw/components/canvases/InteractiveCanvas.tsx

@@ -3,7 +3,7 @@ import { isShallowEqual, sceneCoordsToViewportCoords } from "../../utils";
 import { CURSOR_TYPE } from "../../constants";
 import { t } from "../../i18n";
 import type { DOMAttributes } from "react";
-import type { AppState, InteractiveCanvasAppState } from "../../types";
+import type { AppState, Device, InteractiveCanvasAppState } from "../../types";
 import type {
   InteractiveCanvasRenderConfig,
   RenderableElementsMap,
@@ -23,6 +23,7 @@ type InteractiveCanvasProps = {
   selectionNonce: number | undefined;
   scale: number;
   appState: InteractiveCanvasAppState;
+  device: Device;
   renderInteractiveSceneCallback: (
     data: RenderInteractiveSceneCallback,
   ) => void;
@@ -132,6 +133,7 @@ const InteractiveCanvas = (props: InteractiveCanvasProps) => {
           selectionColor,
           renderScrollbars: false,
         },
+        device: props.device,
         callback: props.renderInteractiveSceneCallback,
       },
       isRenderThrottlingEnabled(),

packages/excalidraw/constants.ts

@@ -148,6 +148,13 @@ export const DEFAULT_VERTICAL_ALIGN = "top";
 export const DEFAULT_VERSION = "{version}";
 export const DEFAULT_TRANSFORM_HANDLE_SPACING = 2;
 
+export const SIDE_RESIZING_THRESHOLD = 2 * DEFAULT_TRANSFORM_HANDLE_SPACING;
+// a small epsilon to make side resizing always take precedence
+// (avoids an increase in renders and changes to tests)
+const EPSILON = 0.00001;
+export const DEFAULT_COLLISION_THRESHOLD =
+  2 * SIDE_RESIZING_THRESHOLD - EPSILON;
+
 export const COLOR_WHITE = "#ffffff";
 export const COLOR_CHARCOAL_BLACK = "#1e1e1e";
 // keep this in sync with CSS

packages/excalidraw/css/styles.scss

@@ -4,6 +4,7 @@
 :root {
   --zIndex-canvas: 1;
   --zIndex-interactiveCanvas: 2;
+  --zIndex-svgLayer: 3;
   --zIndex-wysiwyg: 3;
   --zIndex-canvasButtons: 3;
   --zIndex-layerUI: 4;

packages/excalidraw/element/binding.ts

@@ -293,7 +293,16 @@ export const unbindLinearElements = (
 ): void => {
   elements.forEach((element) => {
     if (isBindingElement(element)) {
-      bindOrUnbindLinearElement(element, null, null, elementsMap);
+      if (element.startBinding !== null && element.endBinding !== null) {
+        bindOrUnbindLinearElement(element, null, null, elementsMap);
+      } else {
+        bindOrUnbindLinearElement(
+          element,
+          element.startBinding ? "keep" : null,
+          element.endBinding ? "keep" : null,
+          elementsMap,
+        );
+      }
     }
   });
 };

packages/excalidraw/element/linearElementEditor.ts

@@ -49,7 +49,7 @@ import { getBoundTextElement, handleBindTextResize } from "./textElement";
 import { DRAGGING_THRESHOLD } from "../constants";
 import { Mutable } from "../utility-types";
 import { ShapeCache } from "../scene/ShapeCache";
-import { IStore } from "../store";
+import { Store } from "../store";
 
 const editorMidPointsCache: {
   version: number | null;
@@ -642,7 +642,7 @@ export class LinearElementEditor {
   static handlePointerDown(
     event: React.PointerEvent<HTMLElement>,
     appState: AppState,
-    store: IStore,
+    store: Store,
     scenePointer: { x: number; y: number },
     linearElementEditor: LinearElementEditor,
     app: AppClassProperties,

packages/excalidraw/element/resizeElements.ts

@@ -1,12 +1,7 @@
 import { MIN_FONT_SIZE, SHIFT_LOCKING_ANGLE } from "../constants";
 import { rescalePoints } from "../points";
 
-import {
-  rotate,
-  adjustXYWithRotation,
-  centerPoint,
-  rotatePoint,
-} from "../math";
+import { rotate, centerPoint, rotatePoint } from "../math";
 import {
   ExcalidrawLinearElement,
   ExcalidrawTextElement,
@@ -23,7 +18,6 @@ import {
   getCommonBounds,
   getResizedElementAbsoluteCoords,
   getCommonBoundingBox,
-  getElementPointsCoords,
 } from "./bounds";
 import {
   isArrowElement,
@@ -38,7 +32,6 @@ import { mutateElement } from "./mutateElement";
 import { getFontString } from "../utils";
 import { updateBoundElements } from "./binding";
 import {
-  TransformHandleType,
   MaybeTransformHandleType,
   TransformHandleDirection,
 } from "./transformHandles";
@@ -54,6 +47,7 @@ import {
   getApproxMinLineHeight,
 } from "./textElement";
 import { LinearElementEditor } from "./linearElementEditor";
+import { isInGroup } from "../groups";
 
 export const normalizeAngle = (angle: number): number => {
   if (angle < 0) {
@@ -133,18 +127,14 @@ export const transformElements = (
         centerY,
       );
       return true;
-    } else if (
-      transformHandleType === "nw" ||
-      transformHandleType === "ne" ||
-      transformHandleType === "sw" ||
-      transformHandleType === "se"
-    ) {
+    } else if (transformHandleType) {
       resizeMultipleElements(
         originalElements,
         selectedElements,
         elementsMap,
         transformHandleType,
         shouldResizeFromCenter,
+        shouldMaintainAspectRatio,
         pointerX,
         pointerY,
       );
@@ -232,26 +222,6 @@ const measureFontSizeFromWidth = (
   };
 };
 
-const getSidesForTransformHandle = (
-  transformHandleType: TransformHandleType,
-  shouldResizeFromCenter: boolean,
-) => {
-  return {
-    n:
-      /^(n|ne|nw)$/.test(transformHandleType) ||
-      (shouldResizeFromCenter && /^(s|se|sw)$/.test(transformHandleType)),
-    s:
-      /^(s|se|sw)$/.test(transformHandleType) ||
-      (shouldResizeFromCenter && /^(n|ne|nw)$/.test(transformHandleType)),
-    w:
-      /^(w|nw|sw)$/.test(transformHandleType) ||
-      (shouldResizeFromCenter && /^(e|ne|se)$/.test(transformHandleType)),
-    e:
-      /^(e|ne|se)$/.test(transformHandleType) ||
-      (shouldResizeFromCenter && /^(w|nw|sw)$/.test(transformHandleType)),
-  };
-};
-
 const resizeSingleTextElement = (
   element: NonDeleted<ExcalidrawTextElement>,
   elementsMap: ElementsMap,
@@ -260,9 +230,10 @@ const resizeSingleTextElement = (
   pointerX: number,
   pointerY: number,
 ) => {
-  const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
-  const cx = (x1 + x2) / 2;
-  const cy = (y1 + y2) / 2;
+  const [x1, y1, x2, y2, cx, cy] = getElementAbsoluteCoords(
+    element,
+    elementsMap,
+  );
   // rotation pointer with reverse angle
   const [rotatedX, rotatedY] = rotate(
     pointerX,
@@ -271,33 +242,24 @@ const resizeSingleTextElement = (
     cy,
     -element.angle,
   );
-  let scale: number;
-  switch (transformHandleType) {
-    case "se":
-      scale = Math.max(
-        (rotatedX - x1) / (x2 - x1),
-        (rotatedY - y1) / (y2 - y1),
-      );
-      break;
-    case "nw":
-      scale = Math.max(
-        (x2 - rotatedX) / (x2 - x1),
-        (y2 - rotatedY) / (y2 - y1),
-      );
-      break;
-    case "ne":
-      scale = Math.max(
-        (rotatedX - x1) / (x2 - x1),
-        (y2 - rotatedY) / (y2 - y1),
-      );
-      break;
-    case "sw":
-      scale = Math.max(
-        (x2 - rotatedX) / (x2 - x1),
-        (rotatedY - y1) / (y2 - y1),
-      );
-      break;
+  let scaleX = 0;
+  let scaleY = 0;
+
+  if (transformHandleType.includes("e")) {
+    scaleX = (rotatedX - x1) / (x2 - x1);
   }
+  if (transformHandleType.includes("w")) {
+    scaleX = (x2 - rotatedX) / (x2 - x1);
+  }
+  if (transformHandleType.includes("n")) {
+    scaleY = (y2 - rotatedY) / (y2 - y1);
+  }
+  if (transformHandleType.includes("s")) {
+    scaleY = (rotatedY - y1) / (y2 - y1);
+  }
+
+  const scale = Math.max(scaleX, scaleY);
+
   if (scale > 0) {
     const nextWidth = element.width * scale;
     const nextHeight = element.height * scale;
@@ -305,32 +267,55 @@ const resizeSingleTextElement = (
     if (metrics === null) {
       return;
     }
-    const [nextX1, nextY1, nextX2, nextY2] = getResizedElementAbsoluteCoords(
-      element,
-      nextWidth,
-      nextHeight,
-      false,
-    );
-    const deltaX1 = (x1 - nextX1) / 2;
-    const deltaY1 = (y1 - nextY1) / 2;
-    const deltaX2 = (x2 - nextX2) / 2;
-    const deltaY2 = (y2 - nextY2) / 2;
-    const [nextElementX, nextElementY] = adjustXYWithRotation(
-      getSidesForTransformHandle(transformHandleType, shouldResizeFromCenter),
-      element.x,
-      element.y,
-      element.angle,
-      deltaX1,
-      deltaY1,
-      deltaX2,
-      deltaY2,
-    );
+
+    const startTopLeft = [x1, y1];
+    const startBottomRight = [x2, y2];
+    const startCenter = [cx, cy];
+
+    let newTopLeft = [x1, y1] as [number, number];
+    if (["n", "w", "nw"].includes(transformHandleType)) {
+      newTopLeft = [
+        startBottomRight[0] - Math.abs(nextWidth),
+        startBottomRight[1] - Math.abs(nextHeight),
+      ];
+    }
+    if (transformHandleType === "ne") {
+      const bottomLeft = [startTopLeft[0], startBottomRight[1]];
+      newTopLeft = [bottomLeft[0], bottomLeft[1] - Math.abs(nextHeight)];
+    }
+    if (transformHandleType === "sw") {
+      const topRight = [startBottomRight[0], startTopLeft[1]];
+      newTopLeft = [topRight[0] - Math.abs(nextWidth), topRight[1]];
+    }
+
+    if (["s", "n"].includes(transformHandleType)) {
+      newTopLeft[0] = startCenter[0] - nextWidth / 2;
+    }
+    if (["e", "w"].includes(transformHandleType)) {
+      newTopLeft[1] = startCenter[1] - nextHeight / 2;
+    }
+
+    if (shouldResizeFromCenter) {
+      newTopLeft[0] = startCenter[0] - Math.abs(nextWidth) / 2;
+      newTopLeft[1] = startCenter[1] - Math.abs(nextHeight) / 2;
+    }
+
+    const angle = element.angle;
+    const rotatedTopLeft = rotatePoint(newTopLeft, [cx, cy], angle);
+    const newCenter: Point = [
+      newTopLeft[0] + Math.abs(nextWidth) / 2,
+      newTopLeft[1] + Math.abs(nextHeight) / 2,
+    ];
+    const rotatedNewCenter = rotatePoint(newCenter, [cx, cy], angle);
+    newTopLeft = rotatePoint(rotatedTopLeft, rotatedNewCenter, -angle);
+    const [nextX, nextY] = newTopLeft;
+
     mutateElement(element, {
       fontSize: metrics.size,
       width: nextWidth,
       height: nextHeight,
-      x: nextElementX,
-      y: nextElementY,
+      x: nextX,
+      y: nextY,
     });
   }
 };
@@ -636,8 +621,9 @@ export const resizeMultipleElements = (
   originalElements: PointerDownState["originalElements"],
   selectedElements: readonly NonDeletedExcalidrawElement[],
   elementsMap: ElementsMap,
-  transformHandleType: "nw" | "ne" | "sw" | "se",
+  transformHandleType: TransformHandleDirection,
   shouldResizeFromCenter: boolean,
+  shouldMaintainAspectRatio: boolean,
   pointerX: number,
   pointerY: number,
 ) => {
@@ -691,43 +677,80 @@ export const resizeMultipleElements = (
   const { minX, minY, maxX, maxY, midX, midY } = getCommonBoundingBox(
     targetElements.map(({ orig }) => orig).concat(boundTextElements),
   );
-
-  // const originalHeight = maxY - minY;
-  // const originalWidth = maxX - minX;
+  const width = maxX - minX;
+  const height = maxY - minY;
 
   const direction = transformHandleType;
 
-  const mapDirectionsToAnchors: Record<typeof direction, Point> = {
+  const anchorsMap: Record<TransformHandleDirection, Point> = {
     ne: [minX, maxY],
     se: [minX, minY],
     sw: [maxX, minY],
     nw: [maxX, maxY],
+    e: [minX, minY + height / 2],
+    w: [maxX, minY + height / 2],
+    n: [minX + width / 2, maxY],
+    s: [minX + width / 2, minY],
   };
 
   // anchor point must be on the opposite side of the dragged selection handle
   // or be the center of the selection if shouldResizeFromCenter
   const [anchorX, anchorY]: Point = shouldResizeFromCenter
     ? [midX, midY]
-    : mapDirectionsToAnchors[direction];
+    : anchorsMap[direction];
+
+  const resizeFromCenterScale = shouldResizeFromCenter ? 2 : 1;
 
   const scale =
     Math.max(
-      Math.abs(pointerX - anchorX) / (maxX - minX) || 0,
-      Math.abs(pointerY - anchorY) / (maxY - minY) || 0,
-    ) * (shouldResizeFromCenter ? 2 : 1);
+      Math.abs(pointerX - anchorX) / width || 0,
+      Math.abs(pointerY - anchorY) / height || 0,
+    ) * resizeFromCenterScale;
 
   if (scale === 0) {
     return;
   }
 
-  const mapDirectionsToPointerPositions: Record<
-    typeof direction,
+  let scaleX =
+    direction.includes("e") || direction.includes("w")
+      ? (Math.abs(pointerX - anchorX) / width) * resizeFromCenterScale
+      : 1;
+  let scaleY =
+    direction.includes("n") || direction.includes("s")
+      ? (Math.abs(pointerY - anchorY) / height) * resizeFromCenterScale
+      : 1;
+
+  const keepAspectRatio =
+    shouldMaintainAspectRatio ||
+    targetElements.some(
+      (item) =>
+        item.latest.angle !== 0 ||
+        isTextElement(item.latest) ||
+        isInGroup(item.latest),
+    );
+
+  if (keepAspectRatio) {
+    scaleX = scale;
+    scaleY = scale;
+  }
+
+  const flipConditionsMap: Record<
+    TransformHandleDirection,
+    // Condition for which we should flip or not flip the selected elements
+    // - when evaluated to `true`, we flip
+    // - therefore, setting it to always `false` means we do not flip (in that direction) at all
     [x: boolean, y: boolean]
   > = {
-    ne: [pointerX >= anchorX, pointerY <= anchorY],
-    se: [pointerX >= anchorX, pointerY >= anchorY],
-    sw: [pointerX <= anchorX, pointerY >= anchorY],
-    nw: [pointerX <= anchorX, pointerY <= anchorY],
+    ne: [pointerX < anchorX, pointerY > anchorY],
+    se: [pointerX < anchorX, pointerY < anchorY],
+    sw: [pointerX > anchorX, pointerY < anchorY],
+    nw: [pointerX > anchorX, pointerY > anchorY],
+    // e.g. when resizing from the "e" side, we do not need to consider changes in the `y` direction
+    //      and therefore, we do not need to flip in the `y` direction at all
+    e: [pointerX < anchorX, false],
+    w: [pointerX > anchorX, false],
+    n: [false, pointerY > anchorY],
+    s: [false, pointerY < anchorY],
   };
 
   /**
@@ -738,9 +761,9 @@ export const resizeMultipleElements = (
    *    mirror points in the case of linear & freedraw elemenets
    * 3. adjust element angle
    */
-  const [flipFactorX, flipFactorY] = mapDirectionsToPointerPositions[
-    direction
-  ].map((condition) => (condition ? 1 : -1));
+  const [flipFactorX, flipFactorY] = flipConditionsMap[direction].map(
+    (condition) => (condition ? -1 : 1),
+  );
   const isFlippedByX = flipFactorX < 0;
   const isFlippedByY = flipFactorY < 0;
 
@@ -762,8 +785,8 @@ export const resizeMultipleElements = (
       continue;
     }
 
-    const width = orig.width * scale;
-    const height = orig.height * scale;
+    const width = orig.width * scaleX;
+    const height = orig.height * scaleY;
     const angle = normalizeAngle(orig.angle * flipFactorX * flipFactorY);
 
     const isLinearOrFreeDraw = isLinearElement(orig) || isFreeDrawElement(orig);
@@ -771,8 +794,8 @@ export const resizeMultipleElements = (
     const offsetY = orig.y - anchorY;
     const shiftX = isFlippedByX && !isLinearOrFreeDraw ? width : 0;
     const shiftY = isFlippedByY && !isLinearOrFreeDraw ? height : 0;
-    const x = anchorX + flipFactorX * (offsetX * scale + shiftX);
-    const y = anchorY + flipFactorY * (offsetY * scale + shiftY);
+    const x = anchorX + flipFactorX * (offsetX * scaleX + shiftX);
+    const y = anchorY + flipFactorY * (offsetY * scaleY + shiftY);
 
     const rescaledPoints = rescalePointsInElement(
       orig,
@@ -790,40 +813,10 @@ export const resizeMultipleElements = (
       ...rescaledPoints,
     };
 
-    if (isImageElement(orig) && targetElements.length === 1) {
+    if (isImageElement(orig)) {
       update.scale = [orig.scale[0] * flipFactorX, orig.scale[1] * flipFactorY];
     }
 
-    if (isLinearElement(orig) && (isFlippedByX || isFlippedByY)) {
-      const origBounds = getElementPointsCoords(orig, orig.points);
-      const newBounds = getElementPointsCoords(
-        { ...orig, x, y },
-        rescaledPoints.points!,
-      );
-      const origXY = [orig.x, orig.y];
-      const newXY = [x, y];
-
-      const linearShift = (axis: "x" | "y") => {
-        const i = axis === "x" ? 0 : 1;
-        return (
-          (newBounds[i + 2] -
-            newXY[i] -
-            (origXY[i] - origBounds[i]) * scale +
-            (origBounds[i + 2] - origXY[i]) * scale -
-            (newXY[i] - newBounds[i])) /
-          2
-        );
-      };
-
-      if (isFlippedByX) {
-        update.x -= linearShift("x");
-      }
-
-      if (isFlippedByY) {
-        update.y -= linearShift("y");
-      }
-    }
-
     if (isTextElement(orig)) {
       const metrics = measureFontSizeFromWidth(orig, elementsMap, width);
       if (!metrics) {
@@ -837,11 +830,15 @@ export const resizeMultipleElements = (
     ) as ExcalidrawTextElementWithContainer | undefined;
 
     if (boundTextElement) {
-      const newFontSize = boundTextElement.fontSize * scale;
-      if (newFontSize < MIN_FONT_SIZE) {
-        return;
+      if (keepAspectRatio) {
+        const newFontSize = boundTextElement.fontSize * scale;
+        if (newFontSize < MIN_FONT_SIZE) {
+          return;
+        }
+        update.boundTextFontSize = newFontSize;
+      } else {
+        update.boundTextFontSize = boundTextElement.fontSize;
       }
-      update.boundTextFontSize = newFontSize;
     }
 
     elementsAndUpdates.push({

packages/excalidraw/element/resizeTest.ts

@@ -6,15 +6,24 @@ import {
 } from "./types";
 
 import {
-  OMIT_SIDES_FOR_MULTIPLE_ELEMENTS,
   getTransformHandlesFromCoords,
   getTransformHandles,
   TransformHandleType,
   TransformHandle,
   MaybeTransformHandleType,
+  getOmitSidesForDevice,
+  canResizeFromSides,
 } from "./transformHandles";
-import { AppState, Zoom } from "../types";
-import { Bounds } from "./bounds";
+import { AppState, Device, Zoom } from "../types";
+import { Bounds, getElementAbsoluteCoords } from "./bounds";
+import { SIDE_RESIZING_THRESHOLD } from "../constants";
+import {
+  angleToDegrees,
+  pointOnLine,
+  pointRotate,
+} from "../../utils/geometry/geometry";
+import { Line, Point } from "../../utils/geometry/shape";
+import { isLinearElement } from "./typeChecks";
 
 const isInsideTransformHandle = (
   transformHandle: TransformHandle,
@@ -34,13 +43,20 @@ export const resizeTest = (
   y: number,
   zoom: Zoom,
   pointerType: PointerType,
+  device: Device,
 ): MaybeTransformHandleType => {
   if (!appState.selectedElementIds[element.id]) {
     return false;
   }
 
   const { rotation: rotationTransformHandle, ...transformHandles } =
-    getTransformHandles(element, zoom, elementsMap, pointerType);
+    getTransformHandles(
+      element,
+      zoom,
+      elementsMap,
+      pointerType,
+      getOmitSidesForDevice(device),
+    );
 
   if (
     rotationTransformHandle &&
@@ -62,6 +78,35 @@ export const resizeTest = (
     return filter[0] as TransformHandleType;
   }
 
+  if (canResizeFromSides(device)) {
+    const [x1, y1, x2, y2, cx, cy] = getElementAbsoluteCoords(
+      element,
+      elementsMap,
+    );
+
+    // Note that for a text element, when "resized" from the side
+    // we should make it wrap/unwrap
+    if (
+      element.type !== "text" &&
+      !(isLinearElement(element) && element.points.length <= 2)
+    ) {
+      const SPACING = SIDE_RESIZING_THRESHOLD / zoom.value;
+      const sides = getSelectionBorders(
+        [x1 - SPACING, y1 - SPACING],
+        [x2 + SPACING, y2 + SPACING],
+        [cx, cy],
+        angleToDegrees(element.angle),
+      );
+
+      for (const [dir, side] of Object.entries(sides)) {
+        // test to see if x, y are on the line segment
+        if (pointOnLine([x, y], side as Line, SPACING)) {
+          return dir as TransformHandleType;
+        }
+      }
+    }
+  }
+
   return false;
 };
 
@@ -73,6 +118,7 @@ export const getElementWithTransformHandleType = (
   zoom: Zoom,
   pointerType: PointerType,
   elementsMap: ElementsMap,
+  device: Device,
 ) => {
   return elements.reduce((result, element) => {
     if (result) {
@@ -86,6 +132,7 @@ export const getElementWithTransformHandleType = (
       scenePointerY,
       zoom,
       pointerType,
+      device,
     );
     return transformHandleType ? { element, transformHandleType } : null;
   }, null as { element: NonDeletedExcalidrawElement; transformHandleType: MaybeTransformHandleType } | null);
@@ -97,13 +144,14 @@ export const getTransformHandleTypeFromCoords = (
   scenePointerY: number,
   zoom: Zoom,
   pointerType: PointerType,
+  device: Device,
 ): MaybeTransformHandleType => {
   const transformHandles = getTransformHandlesFromCoords(
     [x1, y1, x2, y2, (x1 + x2) / 2, (y1 + y2) / 2],
     0,
     zoom,
     pointerType,
-    OMIT_SIDES_FOR_MULTIPLE_ELEMENTS,
+    getOmitSidesForDevice(device),
   );
 
   const found = Object.keys(transformHandles).find((key) => {
@@ -114,7 +162,33 @@ export const getTransformHandleTypeFromCoords = (
       isInsideTransformHandle(transformHandle, scenePointerX, scenePointerY)
     );
   });
-  return (found || false) as MaybeTransformHandleType;
+
+  if (found) {
+    return found as MaybeTransformHandleType;
+  }
+
+  if (canResizeFromSides(device)) {
+    const cx = (x1 + x2) / 2;
+    const cy = (y1 + y2) / 2;
+
+    const SPACING = SIDE_RESIZING_THRESHOLD / zoom.value;
+
+    const sides = getSelectionBorders(
+      [x1 - SPACING, y1 - SPACING],
+      [x2 + SPACING, y2 + SPACING],
+      [cx, cy],
+      angleToDegrees(0),
+    );
+
+    for (const [dir, side] of Object.entries(sides)) {
+      // test to see if x, y are on the line segment
+      if (pointOnLine([scenePointerX, scenePointerY], side as Line, SPACING)) {
+        return dir as TransformHandleType;
+      }
+    }
+  }
+
+  return false;
 };
 
 const RESIZE_CURSORS = ["ns", "nesw", "ew", "nwse"];
@@ -174,3 +248,22 @@ export const getCursorForResizingElement = (resizingElement: {
 
   return cursor ? `${cursor}-resize` : "";
 };
+
+const getSelectionBorders = (
+  [x1, y1]: Point,
+  [x2, y2]: Point,
+  center: Point,
+  angleInDegrees: number,
+) => {
+  const topLeft = pointRotate([x1, y1], angleInDegrees, center);
+  const topRight = pointRotate([x2, y1], angleInDegrees, center);
+  const bottomLeft = pointRotate([x1, y2], angleInDegrees, center);
+  const bottomRight = pointRotate([x2, y2], angleInDegrees, center);
+
+  return {
+    n: [topLeft, topRight],
+    e: [topRight, bottomRight],
+    s: [bottomRight, bottomLeft],
+    w: [bottomLeft, topLeft],
+  };
+};

packages/excalidraw/element/transformHandles.ts

@@ -7,10 +7,14 @@ import {
 
 import { Bounds, getElementAbsoluteCoords } from "./bounds";
 import { rotate } from "../math";
-import { InteractiveCanvasAppState, Zoom } from "../types";
+import { Device, InteractiveCanvasAppState, Zoom } from "../types";
 import { isTextElement } from ".";
 import { isFrameLikeElement, isLinearElement } from "./typeChecks";
-import { DEFAULT_TRANSFORM_HANDLE_SPACING } from "../constants";
+import {
+  DEFAULT_TRANSFORM_HANDLE_SPACING,
+  isAndroid,
+  isIOS,
+} from "../constants";
 
 export type TransformHandleDirection =
   | "n"
@@ -38,6 +42,13 @@ const transformHandleSizes: { [k in PointerType]: number } = {
 
 const ROTATION_RESIZE_HANDLE_GAP = 16;
 
+export const DEFAULT_OMIT_SIDES = {
+  e: true,
+  s: true,
+  n: true,
+  w: true,
+};
+
 export const OMIT_SIDES_FOR_MULTIPLE_ELEMENTS = {
   e: true,
   s: true,
@@ -89,6 +100,26 @@ const generateTransformHandle = (
   return [xx - width / 2, yy - height / 2, width, height];
 };
 
+export const canResizeFromSides = (device: Device) => {
+  if (device.viewport.isMobile) {
+    return false;
+  }
+
+  if (device.isTouchScreen && (isAndroid || isIOS)) {
+    return false;
+  }
+
+  return true;
+};
+
+export const getOmitSidesForDevice = (device: Device) => {
+  if (canResizeFromSides(device)) {
+    return DEFAULT_OMIT_SIDES;
+  }
+
+  return {};
+};
+
 export const getTransformHandlesFromCoords = (
   [x1, y1, x2, y2, cx, cy]: [number, number, number, number, number, number],
   angle: number,
@@ -232,8 +263,8 @@ export const getTransformHandles = (
   element: ExcalidrawElement,
   zoom: Zoom,
   elementsMap: ElementsMap,
-
   pointerType: PointerType = "mouse",
+  omitSides: { [T in TransformHandleType]?: boolean } = DEFAULT_OMIT_SIDES,
 ): TransformHandles => {
   // so that when locked element is selected (especially when you toggle lock
   // via keyboard) the locked element is visually distinct, indicating
@@ -242,7 +273,6 @@ export const getTransformHandles = (
     return {};
   }
 
-  let omitSides: { [T in TransformHandleType]?: boolean } = {};
   if (element.type === "freedraw" || isLinearElement(element)) {
     if (element.points.length === 2) {
       // only check the last point because starting point is always (0,0)
@@ -263,6 +293,7 @@ export const getTransformHandles = (
     omitSides = OMIT_SIDES_FOR_TEXT_ELEMENT;
   } else if (isFrameLikeElement(element)) {
     omitSides = {
+      ...omitSides,
       rotation: true,
     };
   }

packages/excalidraw/groups.ts

@@ -387,3 +387,7 @@ export const elementsAreInSameGroup = (elements: ExcalidrawElement[]) => {
 
   return maxGroup === elements.length;
 };
+
+export const isInGroup = (element: NonDeletedExcalidrawElement) => {
+  return element.groupIds.length > 0;
+};

packages/excalidraw/index.tsx

@@ -220,6 +220,8 @@ export {
   restoreLibraryItems,
 } from "./data/restore";
 
+export { reconcileElements } from "./data/reconcile";
+
 export {
   exportToCanvas,
   exportToBlob,
@@ -251,6 +253,8 @@ export {
   bumpVersion,
 } from "./element/mutateElement";
 
+export { StoreAction } from "./store";
+
 export { parseLibraryTokensFromUrl, useHandleLibrary } from "./data/library";
 
 export {

packages/excalidraw/renderer/interactiveScene.ts

@@ -1,6 +1,5 @@
 import {
   getElementAbsoluteCoords,
-  OMIT_SIDES_FOR_MULTIPLE_ELEMENTS,
   getTransformHandlesFromCoords,
   getTransformHandles,
   getCommonBounds,
@@ -23,7 +22,7 @@ import {
   selectGroupsFromGivenElements,
 } from "../groups";
 import {
-  OMIT_SIDES_FOR_FRAME,
+  getOmitSidesForDevice,
   shouldShowBoundingBox,
   TransformHandles,
   TransformHandleType,
@@ -577,6 +576,7 @@ const _renderInteractiveScene = ({
   scale,
   appState,
   renderConfig,
+  device,
 }: InteractiveSceneRenderConfig) => {
   if (canvas === null) {
     return { atLeastOneVisibleElement: false, elementsMap };
@@ -806,6 +806,7 @@ const _renderInteractiveScene = ({
         appState.zoom,
         elementsMap,
         "mouse", // when we render we don't know which pointer type so use mouse,
+        getOmitSidesForDevice(device),
       );
       if (!appState.viewModeEnabled && showBoundingBox) {
         renderTransformHandles(
@@ -844,8 +845,8 @@ const _renderInteractiveScene = ({
         appState.zoom,
         "mouse",
         isFrameSelected
-          ? OMIT_SIDES_FOR_FRAME
-          : OMIT_SIDES_FOR_MULTIPLE_ELEMENTS,
+          ? { ...getOmitSidesForDevice(device), rotation: true }
+          : getOmitSidesForDevice(device),
       );
       if (selectedElements.some((element) => !element.locked)) {
         renderTransformHandles(

packages/excalidraw/scene/types.ts

@@ -16,6 +16,7 @@ import {
   StaticCanvasAppState,
   SocketId,
   UserIdleState,
+  Device,
 } from "../types";
 import { MakeBrand } from "../utility-types";
 
@@ -85,6 +86,7 @@ export type InteractiveSceneRenderConfig = {
   scale: number;
   appState: InteractiveCanvasAppState;
   renderConfig: InteractiveCanvasRenderConfig;
+  device: Device;
   callback: (data: RenderInteractiveSceneCallback) => void;
 };
 

packages/excalidraw/store.ts

@@ -1,5 +1,6 @@
 import { getDefaultAppState } from "./appState";
 import { AppStateChange, ElementsChange } from "./change";
+import { ENV } from "./constants";
 import { newElementWith } from "./element/mutateElement";
 import { deepCopyElement } from "./element/newElement";
 import { OrderedExcalidrawElement } from "./element/types";
@@ -7,8 +8,11 @@ import { Emitter } from "./emitter";
 import { AppState, ObservedAppState } from "./types";
 import { isShallowEqual } from "./utils";
 
+// hidden non-enumerable property for runtime checks
+const hiddenObservedAppStateProp = "__observedAppState";
+
 export const getObservedAppState = (appState: AppState): ObservedAppState => {
-  return {
+  const observedAppState = {
     name: appState.name,
     editingGroupId: appState.editingGroupId,
     viewBackgroundColor: appState.viewBackgroundColor,
@@ -17,14 +21,40 @@ export const getObservedAppState = (appState: AppState): ObservedAppState => {
     editingLinearElementId: appState.editingLinearElement?.elementId || null,
     selectedLinearElementId: appState.selectedLinearElement?.elementId || null,
   };
+
+  Reflect.defineProperty(observedAppState, hiddenObservedAppStateProp, {
+    value: true,
+    enumerable: false,
+  });
+
+  return observedAppState;
 };
 
-export const StoreAction = {
-  NONE: "NONE",
-  UPDATE: "UPDATE",
-  CAPTURE: "CAPTURE",
+const isObservedAppState = (
+  appState: AppState | ObservedAppState,
+): appState is ObservedAppState =>
+  !!Reflect.get(appState, hiddenObservedAppStateProp);
+
+export type StoreActionType = "capture" | "update" | "none";
+
+export const StoreAction: {
+  [K in Uppercase<StoreActionType>]: StoreActionType;
+} = {
+  CAPTURE: "capture",
+  UPDATE: "update",
+  NONE: "none",
 } as const;
 
+/**
+ * Represent an increment to the Store.
+ */
+class StoreIncrementEvent {
+  constructor(
+    public readonly elementsChange: ElementsChange,
+    public readonly appStateChange: AppStateChange,
+  ) {}
+}
+
 /**
  * Store which captures the observed changes and emits them as `StoreIncrementEvent` events.
  *
@@ -41,18 +71,18 @@ export interface IStore {
   shouldUpdateSnapshot(): void;
 
   /**
-   * Use to schedule calculation of a store increment on a next component update.
+   * Use to schedule calculation of a store increment.
    */
   shouldCaptureIncrement(): void;
 
   /**
-   * Capture changes to the `elements` and `appState` by calculating changes (based on a snapshot) and emitting resulting changes as a store increment.
+   * Based on the scheduled operation, either only updates store snapshot or also calculates increment and emits the result as a `StoreIncrementEvent`.
    *
-   * @emits StoreIncrementEvent
+   * @emits StoreIncrementEvent when increment is calculated.
    */
-  capture(
-    elements: Map<string, OrderedExcalidrawElement>,
-    appState: AppState,
+  commit(
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+    appState: AppState | ObservedAppState | undefined,
   ): void;
 
   /**
@@ -64,33 +94,19 @@ export interface IStore {
    * Filters out yet uncomitted elements from `nextElements`, which are part of in-progress local async actions (ephemerals) and thus were not yet commited to the snapshot.
    *
    * This is necessary in updates in which we receive reconciled elements, already containing elements which were not yet captured by the local store (i.e. collab).
-   *
-   * Once we will be exchanging just store increments for all ephemerals, this could be deprecated.
    */
-  ignoreUncomittedElements(
+  filterUncomittedElements(
     prevElements: Map<string, OrderedExcalidrawElement>,
     nextElements: Map<string, OrderedExcalidrawElement>,
   ): Map<string, OrderedExcalidrawElement>;
 }
 
-/**
- * Represent an increment to the Store.
- */
-class StoreIncrementEvent {
-  constructor(
-    public readonly elementsChange: ElementsChange,
-    public readonly appStateChange: AppStateChange,
-  ) {}
-}
-
 export class Store implements IStore {
   public readonly onStoreIncrementEmitter = new Emitter<
     [StoreIncrementEvent]
   >();
 
-  private calculatingIncrement: boolean = false;
-  private updatingSnapshot: boolean = false;
-
+  private scheduledActions: Set<StoreActionType> = new Set();
   private _snapshot = Snapshot.empty();
 
   public get snapshot() {
@@ -101,64 +117,81 @@ export class Store implements IStore {
     this._snapshot = snapshot;
   }
 
-  public shouldUpdateSnapshot = () => {
-    this.updatingSnapshot = true;
-  };
-
-  // Suspicious that this is called so many places. Seems error-prone.
+  // TODO: Suspicious that this is called so many places. Seems error-prone.
   public shouldCaptureIncrement = () => {
-    this.calculatingIncrement = true;
+    this.scheduleAction(StoreAction.CAPTURE);
   };
 
-  public capture = (
-    elements: Map<string, OrderedExcalidrawElement>,
-    appState: AppState,
+  public shouldUpdateSnapshot = () => {
+    this.scheduleAction(StoreAction.UPDATE);
+  };
+
+  private scheduleAction = (action: StoreActionType) => {
+    this.scheduledActions.add(action);
+    this.satisfiesScheduledActionsInvariant();
+  };
+
+  public commit = (
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+    appState: AppState | ObservedAppState | undefined,
   ): void => {
-    // Quick exit for irrelevant changes
-    if (!this.calculatingIncrement && !this.updatingSnapshot) {
-      return;
-    }
-
     try {
-      const nextSnapshot = this._snapshot.clone(elements, appState);
-
-      // Optimisation, don't continue if nothing has changed
-      if (this._snapshot !== nextSnapshot) {
-        // Calculate and record the changes based on the previous and next snapshot
-        if (this.calculatingIncrement) {
-          const elementsChange = nextSnapshot.meta.didElementsChange
-            ? ElementsChange.calculate(
-                this._snapshot.elements,
-                nextSnapshot.elements,
-              )
-            : ElementsChange.empty();
-
-          const appStateChange = nextSnapshot.meta.didAppStateChange
-            ? AppStateChange.calculate(
-                this._snapshot.appState,
-                nextSnapshot.appState,
-              )
-            : AppStateChange.empty();
-
-          if (!elementsChange.isEmpty() || !appStateChange.isEmpty()) {
-            // Notify listeners with the increment
-            this.onStoreIncrementEmitter.trigger(
-              new StoreIncrementEvent(elementsChange, appStateChange),
-            );
-          }
-        }
-
-        // Update the snapshot
-        this._snapshot = nextSnapshot;
+      // Capture has precedence since it also performs update
+      if (this.scheduledActions.has(StoreAction.CAPTURE)) {
+        this.captureIncrement(elements, appState);
+      } else if (this.scheduledActions.has(StoreAction.UPDATE)) {
+        this.updateSnapshot(elements, appState);
       }
     } finally {
-      // Reset props
-      this.updatingSnapshot = false;
-      this.calculatingIncrement = false;
+      this.satisfiesScheduledActionsInvariant();
+      // Defensively reset all scheduled actions, potentially cleans up other runtime garbage
+      this.scheduledActions = new Set();
     }
   };
 
-  public ignoreUncomittedElements = (
+  public captureIncrement = (
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+    appState: AppState | ObservedAppState | undefined,
+  ) => {
+    const prevSnapshot = this.snapshot;
+    const nextSnapshot = this.snapshot.maybeClone(elements, appState);
+
+    // Optimisation, don't continue if nothing has changed
+    if (prevSnapshot !== nextSnapshot) {
+      // Calculate and record the changes based on the previous and next snapshot
+      const elementsChange = nextSnapshot.meta.didElementsChange
+        ? ElementsChange.calculate(prevSnapshot.elements, nextSnapshot.elements)
+        : ElementsChange.empty();
+
+      const appStateChange = nextSnapshot.meta.didAppStateChange
+        ? AppStateChange.calculate(prevSnapshot.appState, nextSnapshot.appState)
+        : AppStateChange.empty();
+
+      if (!elementsChange.isEmpty() || !appStateChange.isEmpty()) {
+        // Notify listeners with the increment
+        this.onStoreIncrementEmitter.trigger(
+          new StoreIncrementEvent(elementsChange, appStateChange),
+        );
+      }
+
+      // Update snapshot
+      this.snapshot = nextSnapshot;
+    }
+  };
+
+  public updateSnapshot = (
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+    appState: AppState | ObservedAppState | undefined,
+  ) => {
+    const nextSnapshot = this.snapshot.maybeClone(elements, appState);
+
+    if (this.snapshot !== nextSnapshot) {
+      // Update snapshot
+      this.snapshot = nextSnapshot;
+    }
+  };
+
+  public filterUncomittedElements = (
     prevElements: Map<string, OrderedExcalidrawElement>,
     nextElements: Map<string, OrderedExcalidrawElement>,
   ) => {
@@ -170,7 +203,7 @@ export class Store implements IStore {
         continue;
       }
 
-      const elementSnapshot = this._snapshot.elements.get(id);
+      const elementSnapshot = this.snapshot.elements.get(id);
 
       // Checks for in progress async user action
       if (!elementSnapshot) {
@@ -186,7 +219,19 @@ export class Store implements IStore {
   };
 
   public clear = (): void => {
-    this._snapshot = Snapshot.empty();
+    this.snapshot = Snapshot.empty();
+    this.scheduledActions = new Set();
+  };
+
+  private satisfiesScheduledActionsInvariant = () => {
+    if (!(this.scheduledActions.size >= 0 && this.scheduledActions.size <= 3)) {
+      const message = `There can be at most three store actions scheduled at the same time, but there are "${this.scheduledActions.size}".`;
+      console.error(message, this.scheduledActions.values());
+
+      if (import.meta.env.DEV || import.meta.env.MODE === ENV.TEST) {
+        throw new Error(message);
+      }
+    }
   };
 }
 
@@ -218,29 +263,30 @@ export class Snapshot {
   }
 
   /**
-   * Efficiently clone the existing snapshot.
+   * Efficiently clone the existing snapshot, only if we detected changes.
    *
    * @returns same instance if there are no changes detected, new instance otherwise.
    */
-  public clone(
-    elements: Map<string, OrderedExcalidrawElement>,
-    appState: AppState,
+  public maybeClone(
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+    appState: AppState | ObservedAppState | undefined,
   ) {
-    const didElementsChange = this.detectChangedElements(elements);
+    const nextElementsSnapshot = this.maybeCreateElementsSnapshot(elements);
+    const nextAppStateSnapshot = this.maybeCreateAppStateSnapshot(appState);
 
-    // Not watching over everything from app state, just the relevant props
-    const nextAppStateSnapshot = getObservedAppState(appState);
-    const didAppStateChange = this.detectChangedAppState(nextAppStateSnapshot);
+    let didElementsChange = false;
+    let didAppStateChange = false;
 
-    // Nothing has changed, so there is no point of continuing further
-    if (!didElementsChange && !didAppStateChange) {
-      return this;
+    if (this.elements !== nextElementsSnapshot) {
+      didElementsChange = true;
     }
 
-    // Clone only if there was really a change
-    let nextElementsSnapshot = this.elements;
-    if (didElementsChange) {
-      nextElementsSnapshot = this.createElementsSnapshot(elements);
+    if (this.appState !== nextAppStateSnapshot) {
+      didAppStateChange = true;
+    }
+
+    if (!didElementsChange && !didAppStateChange) {
+      return this;
     }
 
     const snapshot = new Snapshot(nextElementsSnapshot, nextAppStateSnapshot, {
@@ -251,10 +297,55 @@ export class Snapshot {
     return snapshot;
   }
 
+  private maybeCreateAppStateSnapshot(
+    appState: AppState | ObservedAppState | undefined,
+  ) {
+    if (!appState) {
+      return this.appState;
+    }
+
+    // Not watching over everything from the app state, just the relevant props
+    const nextAppStateSnapshot = !isObservedAppState(appState)
+      ? getObservedAppState(appState)
+      : appState;
+
+    const didAppStateChange = this.detectChangedAppState(nextAppStateSnapshot);
+
+    if (!didAppStateChange) {
+      return this.appState;
+    }
+
+    return nextAppStateSnapshot;
+  }
+
+  private detectChangedAppState(nextObservedAppState: ObservedAppState) {
+    return !isShallowEqual(this.appState, nextObservedAppState, {
+      selectedElementIds: isShallowEqual,
+      selectedGroupIds: isShallowEqual,
+    });
+  }
+
+  private maybeCreateElementsSnapshot(
+    elements: Map<string, OrderedExcalidrawElement> | undefined,
+  ) {
+    if (!elements) {
+      return this.elements;
+    }
+
+    const didElementsChange = this.detectChangedElements(elements);
+
+    if (!didElementsChange) {
+      return this.elements;
+    }
+
+    const elementsSnapshot = this.createElementsSnapshot(elements);
+    return elementsSnapshot;
+  }
+
   /**
    * Detect if there any changed elements.
    *
-   * NOTE: we shouldn't use `sceneVersionNonce` instead, as we need to call this before the scene updates.
+   * NOTE: we shouldn't just use `sceneVersionNonce` instead, as we need to call this before the scene updates.
    */
   private detectChangedElements(
     nextElements: Map<string, OrderedExcalidrawElement>,
@@ -286,13 +377,6 @@ export class Snapshot {
     return false;
   }
 
-  private detectChangedAppState(observedAppState: ObservedAppState) {
-    return !isShallowEqual(this.appState, observedAppState, {
-      selectedElementIds: isShallowEqual,
-      selectedGroupIds: isShallowEqual,
-    });
-  }
-
   /**
    * Perform structural clone, cloning only elements that changed.
    */

packages/excalidraw/tests/__snapshots__/contextmenu.test.tsx.snap

@@ -2170,14 +2170,14 @@ exports[`contextMenu element > selecting 'Delete' in context menu deletes elemen
   "roundness": {
     "type": 3,
   },
-  "seed": 1278240551,
+  "seed": 449462985,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 1150084233,
+  "versionNonce": 1014066025,
   "width": 20,
   "x": -10,
   "y": 0,
@@ -2404,14 +2404,14 @@ exports[`contextMenu element > selecting 'Duplicate' in context menu duplicates
   "roundness": {
     "type": 3,
   },
-  "seed": 1278240551,
+  "seed": 449462985,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 3,
-  "versionNonce": 401146281,
+  "versionNonce": 1150084233,
   "width": 20,
   "x": -10,
   "y": 0,
@@ -2438,14 +2438,14 @@ exports[`contextMenu element > selecting 'Duplicate' in context menu duplicates
   "roundness": {
     "type": 3,
   },
-  "seed": 1150084233,
+  "seed": 1014066025,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 1116226695,
+  "versionNonce": 238820263,
   "width": 20,
   "x": 0,
   "y": 10,
@@ -2704,14 +2704,14 @@ exports[`contextMenu element > selecting 'Group selection' in context menu group
   "roundness": {
     "type": 3,
   },
-  "seed": 1278240551,
+  "seed": 449462985,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 1505387817,
+  "versionNonce": 493213705,
   "width": 20,
   "x": -10,
   "y": 0,
@@ -2740,14 +2740,14 @@ exports[`contextMenu element > selecting 'Group selection' in context menu group
   "roundness": {
     "type": 3,
   },
-  "seed": 1150084233,
+  "seed": 1014066025,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 23633383,
+  "versionNonce": 915032327,
   "width": 20,
   "x": 20,
   "y": 30,
@@ -3060,14 +3060,14 @@ exports[`contextMenu element > selecting 'Paste styles' in context menu pastes s
   "roundness": {
     "type": 3,
   },
-  "seed": 1278240551,
+  "seed": 449462985,
   "strokeColor": "#e03131",
   "strokeStyle": "dotted",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 640725609,
+  "versionNonce": 941653321,
   "width": 20,
   "x": -10,
   "y": 0,
@@ -3094,14 +3094,14 @@ exports[`contextMenu element > selecting 'Paste styles' in context menu pastes s
   "roundness": {
     "type": 3,
   },
-  "seed": 760410951,
+  "seed": 289600103,
   "strokeColor": "#e03131",
   "strokeStyle": "dotted",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 9,
-  "versionNonce": 1315507081,
+  "versionNonce": 640725609,
   "width": 20,
   "x": 20,
   "y": 30,
@@ -3840,14 +3840,14 @@ exports[`contextMenu element > selecting 'Send to back' in context menu sends el
   "roundness": {
     "type": 3,
   },
-  "seed": 1150084233,
+  "seed": 1014066025,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 4,
-  "versionNonce": 1604849351,
+  "versionNonce": 23633383,
   "width": 20,
   "x": 20,
   "y": 30,
@@ -3874,14 +3874,14 @@ exports[`contextMenu element > selecting 'Send to back' in context menu sends el
   "roundness": {
     "type": 3,
   },
-  "seed": 1278240551,
+  "seed": 449462985,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 3,
-  "versionNonce": 401146281,
+  "versionNonce": 1150084233,
   "width": 20,
   "x": -10,
   "y": 0,
@@ -5224,8 +5224,8 @@ exports[`contextMenu element > shows 'Group selection' in context menu for multi
         },
       },
     ],
-    "left": -19,
-    "top": -9,
+    "left": -17,
+    "top": -7,
   },
   "currentChartType": "bar",
   "currentItemBackgroundColor": "transparent",
@@ -5342,14 +5342,14 @@ exports[`contextMenu element > shows 'Group selection' in context menu for multi
   "roundness": {
     "type": 3,
   },
-  "seed": 449462985,
+  "seed": 453191,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 3,
-  "versionNonce": 1150084233,
+  "versionNonce": 1014066025,
   "width": 10,
   "x": -10,
   "y": 0,
@@ -5376,16 +5376,16 @@ exports[`contextMenu element > shows 'Group selection' in context menu for multi
   "roundness": {
     "type": 3,
   },
-  "seed": 1014066025,
+  "seed": 400692809,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
   "strokeWidth": 2,
   "type": "rectangle",
   "updated": 1,
   "version": 3,
-  "versionNonce": 1604849351,
+  "versionNonce": 23633383,
   "width": 10,
-  "x": 10,
+  "x": 12,
   "y": 0,
 }
 `;
@@ -5493,7 +5493,7 @@ History {
               "strokeWidth": 2,
               "type": "rectangle",
               "width": 10,
-              "x": 10,
+              "x": 12,
               "y": 0,
             },
             "inserted": {
@@ -6349,8 +6349,8 @@ exports[`contextMenu element > shows 'Ungroup selection' in context menu for gro
         },
       },
     ],
-    "left": -19,
-    "top": -9,
+    "left": -17,
+    "top": -7,
   },
   "currentChartType": "bar",
   "currentItemBackgroundColor": "transparent",
@@ -6516,7 +6516,7 @@ exports[`contextMenu element > shows 'Ungroup selection' in context menu for gro
   "version": 4,
   "versionNonce": 747212839,
   "width": 10,
-  "x": 10,
+  "x": 12,
   "y": 0,
 }
 `;
@@ -6624,7 +6624,7 @@ History {
               "strokeWidth": 2,
               "type": "rectangle",
               "width": 10,
-              "x": 10,
+              "x": 12,
               "y": 0,
             },
             "inserted": {
@@ -8181,8 +8181,8 @@ exports[`contextMenu element > shows context menu for element > [end of test] ap
         },
       },
     ],
-    "left": -19,
-    "top": -9,
+    "left": -17,
+    "top": -7,
   },
   "currentChartType": "bar",
   "currentItemBackgroundColor": "transparent",

packages/excalidraw/tests/__snapshots__/regressionTests.test.tsx.snap

@@ -1400,9 +1400,7 @@ exports[`regression tests > Drags selected element when hitting only bounding bo
   "penDetected": false,
   "penMode": false,
   "pendingImageElementId": null,
-  "previousSelectedElementIds": {
-    "id0": true,
-  },
+  "previousSelectedElementIds": {},
   "resizingElement": null,
   "scrollX": 0,
   "scrollY": 0,
@@ -1522,7 +1520,7 @@ History {
 
 exports[`regression tests > Drags selected element when hitting only bounding box and keeps element selected > [end of test] number of elements 1`] = `0`;
 
-exports[`regression tests > Drags selected element when hitting only bounding box and keeps element selected > [end of test] number of renders 1`] = `9`;
+exports[`regression tests > Drags selected element when hitting only bounding box and keeps element selected > [end of test] number of renders 1`] = `11`;
 
 exports[`regression tests > adjusts z order when grouping > [end of test] appState 1`] = `
 {
@@ -6570,12 +6568,27 @@ History {
         "delta": Delta {
           "deleted": {
             "selectedElementIds": {},
-            "selectedLinearElementId": null,
           },
           "inserted": {
             "selectedElementIds": {
               "id6": true,
             },
+          },
+        },
+      },
+      "elementsChange": ElementsChange {
+        "added": Map {},
+        "removed": Map {},
+        "updated": Map {},
+      },
+    },
+    HistoryEntry {
+      "appStateChange": AppStateChange {
+        "delta": Delta {
+          "deleted": {
+            "selectedLinearElementId": null,
+          },
+          "inserted": {
             "selectedLinearElementId": "id6",
           },
         },

packages/excalidraw/tests/binding.test.tsx

@@ -45,6 +45,7 @@ describe("element binding", () => {
     mouse.downAt(100, 0);
     mouse.moveTo(55, 0);
     mouse.up(0, 0);
+    expect(API.getSelectedElements()).toEqual([arrow]);
     expect(arrow.startBinding).toEqual({
       elementId: rect.id,
       focus: expect.toBeNonNaNNumber(),
@@ -369,4 +370,44 @@ describe("element binding", () => {
     expect(arrow2.startBinding?.elementId).toBe(container.id);
     expect(arrow2.endBinding?.elementId).toBe(rectangle1.id);
   });
+
+  // #6459
+  it("should unbind arrow only from the latest element", () => {
+    const rectLeft = UI.createElement("rectangle", {
+      x: 0,
+      width: 200,
+      height: 500,
+    });
+    const rectRight = UI.createElement("rectangle", {
+      x: 400,
+      width: 200,
+      height: 500,
+    });
+    const arrow = UI.createElement("arrow", {
+      x: 210,
+      y: 250,
+      width: 180,
+      height: 1,
+    });
+    expect(arrow.startBinding?.elementId).toBe(rectLeft.id);
+    expect(arrow.endBinding?.elementId).toBe(rectRight.id);
+
+    // Drag arrow off of bound rectangle range
+    const handles = getTransformHandles(
+      arrow,
+      h.state.zoom,
+      arrayToMap(h.elements),
+      "mouse",
+    ).se!;
+
+    Keyboard.keyDown(KEYS.CTRL_OR_CMD);
+    const elX = handles[0] + handles[2] / 2;
+    const elY = handles[1] + handles[3] / 2;
+    mouse.downAt(elX, elY);
+    mouse.moveTo(300, 400);
+    mouse.up();
+
+    expect(arrow.startBinding).not.toBe(null);
+    expect(arrow.endBinding).toBe(null);
+  });
 });

packages/excalidraw/tests/contextmenu.test.tsx

@@ -108,8 +108,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     const contextMenuOptions =
@@ -188,19 +188,19 @@ describe("contextMenu element", () => {
     mouse.up(10, 10);
 
     UI.clickTool("rectangle");
-    mouse.down(10, -10);
+    mouse.down(12, -10);
     mouse.up(10, 10);
 
     mouse.reset();
     mouse.click(10, 10);
     Keyboard.withModifierKeys({ shift: true }, () => {
-      mouse.click(20, 0);
+      mouse.click(22, 0);
     });
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
 
     const contextMenu = UI.queryContextMenu();
@@ -240,13 +240,13 @@ describe("contextMenu element", () => {
     mouse.up(10, 10);
 
     UI.clickTool("rectangle");
-    mouse.down(10, -10);
+    mouse.down(12, -10);
     mouse.up(10, 10);
 
     mouse.reset();
     mouse.click(10, 10);
     Keyboard.withModifierKeys({ shift: true }, () => {
-      mouse.click(20, 0);
+      mouse.click(22, 0);
     });
 
     Keyboard.withModifierKeys({ ctrl: true }, () => {
@@ -255,8 +255,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
 
     const contextMenu = UI.queryContextMenu();
@@ -297,8 +297,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     expect(copiedStyles).toBe("{}");
@@ -382,8 +382,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     fireEvent.click(queryAllByText(contextMenu!, "Delete")[0]);
@@ -398,8 +398,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     fireEvent.click(queryByText(contextMenu!, "Add to library")!);
@@ -417,8 +417,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     fireEvent.click(queryByText(contextMenu!, "Duplicate")!);
@@ -548,8 +548,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
     const contextMenu = UI.queryContextMenu();
     fireEvent.click(queryByText(contextMenu!, "Group selection")!);
@@ -578,8 +578,8 @@ describe("contextMenu element", () => {
 
     fireEvent.contextMenu(GlobalTestState.interactiveCanvas, {
       button: 2,
-      clientX: 1,
-      clientY: 1,
+      clientX: 3,
+      clientY: 3,
     });
 
     const contextMenu = UI.queryContextMenu();

packages/excalidraw/tests/helpers/ui.ts

@@ -315,6 +315,7 @@ const transform = (
       h.state.zoom,
       arrayToMap(h.elements),
       "mouse",
+      {},
     )[handle];
   } else {
     const [x1, y1, x2, y2] = getCommonBounds(elements);

packages/excalidraw/tests/history.test.tsx

@@ -15,7 +15,11 @@ import { createUndoAction, createRedoAction } from "../actions/actionHistory";
 import { EXPORT_DATA_TYPES, MIME_TYPES } from "../constants";
 import { AppState, ExcalidrawImperativeAPI } from "../types";
 import { arrayToMap, resolvablePromise } from "../utils";
-import { COLOR_PALETTE } from "../colors";
+import {
+  COLOR_PALETTE,
+  DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX,
+  DEFAULT_ELEMENT_STROKE_COLOR_INDEX,
+} from "../colors";
 import { KEYS } from "../keys";
 import { newElementWith } from "../element/mutateElement";
 import {
@@ -35,7 +39,7 @@ import { vi } from "vitest";
 import { queryByText } from "@testing-library/react";
 import { HistoryEntry } from "../history";
 import { AppStateChange, ElementsChange } from "../change";
-import { Snapshot } from "../store";
+import { Snapshot, StoreAction } from "../store";
 
 const { h } = window;
 
@@ -67,10 +71,11 @@ const checkpoint = (name: string) => {
 const renderStaticScene = vi.spyOn(StaticScene, "renderStaticScene");
 
 const transparent = COLOR_PALETTE.transparent;
-const red = COLOR_PALETTE.red[1];
-const blue = COLOR_PALETTE.blue[1];
-const yellow = COLOR_PALETTE.yellow[1];
-const violet = COLOR_PALETTE.violet[1];
+const black = COLOR_PALETTE.black;
+const red = COLOR_PALETTE.red[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX];
+const blue = COLOR_PALETTE.blue[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX];
+const yellow = COLOR_PALETTE.yellow[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX];
+const violet = COLOR_PALETTE.violet[DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX];
 
 describe("history", () => {
   beforeEach(() => {
@@ -176,7 +181,7 @@ describe("history", () => {
 
       excalidrawAPI.updateScene({
         elements: [rect1, rect2],
-        commitToStore: true,
+        storeAction: StoreAction.CAPTURE,
       });
 
       expect(API.getUndoStack().length).toBe(1);
@@ -188,7 +193,7 @@ describe("history", () => {
 
       excalidrawAPI.updateScene({
         elements: [rect1, rect2],
-        commitToStore: true, // even though the flag is on, same elements are passed, nothing to commit
+        storeAction: StoreAction.CAPTURE, // even though the flag is on, same elements are passed, nothing to commit
       });
       expect(API.getUndoStack().length).toBe(1);
       expect(API.getRedoStack().length).toBe(0);
@@ -556,7 +561,7 @@ describe("history", () => {
         appState: {
           name: "New name",
         },
-        commitToStore: true,
+        storeAction: StoreAction.CAPTURE,
       });
 
       expect(API.getUndoStack().length).toBe(1);
@@ -567,7 +572,7 @@ describe("history", () => {
         appState: {
           viewBackgroundColor: "#000",
         },
-        commitToStore: true,
+        storeAction: StoreAction.CAPTURE,
       });
       expect(API.getUndoStack().length).toBe(2);
       expect(API.getRedoStack().length).toBe(0);
@@ -580,7 +585,7 @@ describe("history", () => {
           name: "New name",
           viewBackgroundColor: "#000",
         },
-        commitToStore: true,
+        storeAction: StoreAction.CAPTURE,
       });
       expect(API.getUndoStack().length).toBe(2);
       expect(API.getRedoStack().length).toBe(0);
@@ -973,6 +978,69 @@ describe("history", () => {
       ]);
     });
 
+    it("should create entry when selecting freedraw", async () => {
+      await render(<Excalidraw handleKeyboardGlobally={true} />);
+
+      UI.clickTool("rectangle");
+      mouse.down(-10, -10);
+      mouse.up(10, 10);
+
+      UI.clickTool("freedraw");
+      mouse.down(40, -20);
+      mouse.up(50, 10);
+
+      const rectangle = h.elements[0];
+      const freedraw1 = h.elements[1];
+
+      expect(API.getUndoStack().length).toBe(3);
+      expect(API.getRedoStack().length).toBe(0);
+      expect(API.getSelectedElements().length).toBe(0);
+      expect(h.elements).toEqual([
+        expect.objectContaining({ id: rectangle.id }),
+        expect.objectContaining({ id: freedraw1.id, strokeColor: black }),
+      ]);
+
+      Keyboard.undo();
+      expect(API.getUndoStack().length).toBe(2);
+      expect(API.getRedoStack().length).toBe(1);
+      expect(API.getSelectedElements().length).toBe(0);
+      expect(h.elements).toEqual([
+        expect.objectContaining({ id: rectangle.id }),
+        expect.objectContaining({
+          id: freedraw1.id,
+          strokeColor: black,
+          isDeleted: true,
+        }),
+      ]);
+
+      togglePopover("Stroke");
+      UI.clickOnTestId("color-red");
+      mouse.down(40, -20);
+      mouse.up(50, 10);
+
+      const freedraw2 = h.elements[2];
+
+      expect(API.getUndoStack().length).toBe(3);
+      expect(API.getRedoStack().length).toBe(0);
+      expect(h.elements).toEqual([
+        expect.objectContaining({ id: rectangle.id }),
+        expect.objectContaining({
+          id: freedraw1.id,
+          strokeColor: black,
+          isDeleted: true,
+        }),
+        expect.objectContaining({
+          id: freedraw2.id,
+          strokeColor: COLOR_PALETTE.red[DEFAULT_ELEMENT_STROKE_COLOR_INDEX],
+        }),
+      ]);
+
+      // ensure we don't end up with duplicated entries
+      UI.clickTool("freedraw");
+      expect(API.getUndoStack().length).toBe(3);
+      expect(API.getRedoStack().length).toBe(0);
+    });
+
     it("should support duplication of groups, appstate group selection and editing group", async () => {
       await render(<Excalidraw handleKeyboardGlobally={true} />);
       const rect1 = API.createElement({
@@ -1235,7 +1303,7 @@ describe("history", () => {
 
         excalidrawAPI.updateScene({
           elements: [rect1, text, rect2],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // bind text1 to rect1
@@ -1638,6 +1706,7 @@ describe("history", () => {
         <Excalidraw
           excalidrawAPI={(api) => excalidrawAPIPromise.resolve(api as any)}
           handleKeyboardGlobally={true}
+          isCollaborating={true}
         />,
       );
       excalidrawAPI = await excalidrawAPIPromise;
@@ -1663,6 +1732,7 @@ describe("history", () => {
             strokeColor: blue,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -1700,6 +1770,7 @@ describe("history", () => {
             strokeColor: yellow,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -1747,6 +1818,7 @@ describe("history", () => {
             backgroundColor: yellow,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       // At this point our entry gets updated from `red` -> `blue` into `red` -> `yellow`
@@ -1762,6 +1834,7 @@ describe("history", () => {
             backgroundColor: violet,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       // At this point our (inversed) entry gets updated from `red` -> `yellow` into `violet` -> `yellow`
@@ -1790,6 +1863,7 @@ describe("history", () => {
       // Initialize scene
       excalidrawAPI.updateScene({
         elements: [rect1, rect2],
+        storeAction: StoreAction.UPDATE,
       });
 
       // Simulate local update
@@ -1798,7 +1872,7 @@ describe("history", () => {
           newElementWith(h.elements[0], { groupIds: ["A"] }),
           newElementWith(h.elements[1], { groupIds: ["A"] }),
         ],
-        commitToStore: true,
+        storeAction: StoreAction.CAPTURE,
       });
 
       const rect3 = API.createElement({ type: "rectangle", groupIds: ["B"] });
@@ -1812,6 +1886,7 @@ describe("history", () => {
           rect3,
           rect4,
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -1857,6 +1932,7 @@ describe("history", () => {
             ],
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo(); // undo `actionFinalize`
@@ -1951,6 +2027,7 @@ describe("history", () => {
             isDeleted: false, // undeletion might happen due to concurrency between clients
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       expect(API.getSelectedElements()).toEqual([]);
@@ -2027,6 +2104,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       expect(h.elements).toEqual([
@@ -2088,6 +2166,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2163,6 +2242,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2201,6 +2281,7 @@ describe("history", () => {
             isDeleted: false,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.redo();
@@ -2246,6 +2327,7 @@ describe("history", () => {
       // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [rect1, rect2],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.withModifierKeys({ ctrl: true }, () => {
@@ -2255,6 +2337,7 @@ describe("history", () => {
       // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [h.elements[0], h.elements[1], rect3, rect4],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.withModifierKeys({ ctrl: true }, () => {
@@ -2275,6 +2358,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2299,6 +2383,7 @@ describe("history", () => {
             isDeleted: false,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.redo();
@@ -2309,6 +2394,7 @@ describe("history", () => {
       // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [h.elements[0], h.elements[1], rect3, rect4],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.redo();
@@ -2354,6 +2440,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2374,6 +2461,7 @@ describe("history", () => {
           }),
           h.elements[1],
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2416,6 +2504,7 @@ describe("history", () => {
             isDeleted: true,
           }),
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2458,6 +2547,7 @@ describe("history", () => {
           h.elements[0],
           h.elements[1],
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       expect(API.getUndoStack().length).toBe(2);
@@ -2496,6 +2586,7 @@ describe("history", () => {
           h.elements[0],
           h.elements[1],
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       expect(API.getUndoStack().length).toBe(2);
@@ -2546,6 +2637,7 @@ describe("history", () => {
           h.elements[0], // rect2
           h.elements[1], // rect1
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2575,6 +2667,7 @@ describe("history", () => {
           h.elements[0], // rect3
           h.elements[2], // rect1
         ],
+        storeAction: StoreAction.UPDATE,
       });
 
       Keyboard.undo();
@@ -2604,6 +2697,7 @@ describe("history", () => {
       // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [...h.elements, rect],
+        storeAction: StoreAction.UPDATE,
       });
 
       mouse.moveTo(60, 60);
@@ -2655,6 +2749,7 @@ describe("history", () => {
       // // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [...h.elements, rect3],
+        storeAction: StoreAction.UPDATE,
       });
 
       mouse.moveTo(100, 100);
@@ -2744,6 +2839,7 @@ describe("history", () => {
       // Simulate remote update
       excalidrawAPI.updateScene({
         elements: [...h.elements, rect3],
+        storeAction: StoreAction.UPDATE,
       });
 
       mouse.moveTo(100, 100);
@@ -2920,6 +3016,7 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [container, text],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
@@ -2932,7 +3029,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -2963,6 +3060,7 @@ describe("history", () => {
               x: h.elements[1].x + 10,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3005,6 +3103,7 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [container, text],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
@@ -3017,7 +3116,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -3051,6 +3150,7 @@ describe("history", () => {
             remoteText,
             h.elements[1],
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3106,6 +3206,7 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [container, text],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
@@ -3118,7 +3219,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -3155,6 +3256,7 @@ describe("history", () => {
               containerId: remoteContainer.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3212,7 +3314,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [container],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3223,6 +3325,7 @@ describe("history", () => {
             }),
             newElementWith(text, { containerId: container.id }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3272,7 +3375,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [text],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3283,6 +3386,7 @@ describe("history", () => {
             }),
             newElementWith(text, { containerId: container.id }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3331,7 +3435,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [container],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3344,6 +3448,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         Keyboard.undo();
@@ -3380,6 +3485,7 @@ describe("history", () => {
             // rebinding the container with a new text element!
             remoteText,
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3436,7 +3542,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [text],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3449,6 +3555,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         Keyboard.undo();
@@ -3485,6 +3592,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3540,7 +3648,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [container],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3554,6 +3662,7 @@ describe("history", () => {
               isDeleted: true,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3596,7 +3705,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [text],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate remote update
@@ -3610,6 +3719,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -3652,6 +3762,7 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [container],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
@@ -3663,7 +3774,7 @@ describe("history", () => {
               angle: 90,
             }),
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -3676,6 +3787,7 @@ describe("history", () => {
             }),
             newElementWith(text, { containerId: container.id }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         expect(h.elements).toEqual([
@@ -3768,6 +3880,7 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [text],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
@@ -3779,7 +3892,7 @@ describe("history", () => {
               angle: 90,
             }),
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -3794,6 +3907,7 @@ describe("history", () => {
               containerId: container.id,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         expect(API.getUndoStack().length).toBe(0);
@@ -3884,7 +3998,7 @@ describe("history", () => {
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [rect1, rect2],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         mouse.reset();
@@ -3962,6 +4076,7 @@ describe("history", () => {
               x: h.elements[1].x + 50,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -4082,6 +4197,7 @@ describe("history", () => {
             }),
             remoteContainer,
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -4166,6 +4282,7 @@ describe("history", () => {
               boundElements: [{ id: arrow.id, type: "arrow" }],
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -4230,7 +4347,10 @@ describe("history", () => {
         });
 
         // Simulate local update
-        excalidrawAPI.updateScene({ elements: [arrow], commitToStore: true });
+        excalidrawAPI.updateScene({
+          elements: [arrow],
+          storeAction: StoreAction.CAPTURE,
+        });
 
         // Simulate remote update
         excalidrawAPI.updateScene({
@@ -4246,6 +4366,7 @@ describe("history", () => {
               boundElements: [{ id: arrow.id, type: "arrow" }],
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         runTwice(() => {
@@ -4357,6 +4478,7 @@ describe("history", () => {
             newElementWith(h.elements[1], { x: 500, y: -500 }),
             h.elements[2],
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         Keyboard.redo();
@@ -4424,12 +4546,13 @@ describe("history", () => {
         // Initialize the scene
         excalidrawAPI.updateScene({
           elements: [frame],
+          storeAction: StoreAction.UPDATE,
         });
 
         // Simulate local update
         excalidrawAPI.updateScene({
           elements: [rect, h.elements[0]],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         // Simulate local update
@@ -4440,7 +4563,7 @@ describe("history", () => {
             }),
             h.elements[1],
           ],
-          commitToStore: true,
+          storeAction: StoreAction.CAPTURE,
         });
 
         Keyboard.undo();
@@ -4484,6 +4607,7 @@ describe("history", () => {
               isDeleted: true,
             }),
           ],
+          storeAction: StoreAction.UPDATE,
         });
 
         Keyboard.redo();

packages/excalidraw/tests/packages/events.test.tsx

@@ -1,5 +1,5 @@
 import { vi } from "vitest";
-import { Excalidraw } from "../../index";
+import { Excalidraw, StoreAction } from "../../index";
 import { ExcalidrawImperativeAPI } from "../../types";
 import { resolvablePromise } from "../../utils";
 import { render } from "../test-utils";
@@ -27,7 +27,10 @@ describe("event callbacks", () => {
 
     const origBackgroundColor = h.state.viewBackgroundColor;
     excalidrawAPI.onChange(onChange);
-    excalidrawAPI.updateScene({ appState: { viewBackgroundColor: "red" } });
+    excalidrawAPI.updateScene({
+      appState: { viewBackgroundColor: "red" },
+      storeAction: StoreAction.CAPTURE,
+    });
     expect(onChange).toHaveBeenCalledWith(
       // elements
       [],

packages/excalidraw/tests/regressionTests.test.tsx

@@ -199,7 +199,6 @@ describe("regression tests", () => {
     expect(
       h.elements.filter((element) => element.type === "rectangle").length,
     ).toBe(1);
-
     Keyboard.withModifierKeys({ alt: true }, () => {
       mouse.down(-8, -8);
       mouse.up(10, 10);
@@ -725,7 +724,7 @@ describe("regression tests", () => {
     mouse.up(10, 10);
 
     const { x: prevX, y: prevY } = API.getSelectedElement();
-
+    API.clearSelection();
     // drag element from point on bounding box that doesn't hit element
     mouse.reset();
     mouse.down(8, 8);
@@ -1015,12 +1014,22 @@ describe("regression tests", () => {
   });
 
   it("single-clicking on a subgroup of a selected group should not alter selection", () => {
-    const rect1 = UI.createElement("rectangle", { x: 10 });
-    const rect2 = UI.createElement("rectangle", { x: 50 });
+    const rect1 = UI.createElement("rectangle", {
+      x: 10,
+    });
+    const rect2 = UI.createElement("rectangle", {
+      x: 50,
+    });
     UI.group([rect1, rect2]);
 
-    const rect3 = UI.createElement("rectangle", { x: 10, y: 50 });
-    const rect4 = UI.createElement("rectangle", { x: 50, y: 50 });
+    const rect3 = UI.createElement("rectangle", {
+      x: 10,
+      y: 50,
+    });
+    const rect4 = UI.createElement("rectangle", {
+      x: 50,
+      y: 50,
+    });
     UI.group([rect3, rect4]);
 
     Keyboard.withModifierKeys({ ctrl: true }, () => {
@@ -1079,8 +1088,9 @@ describe("regression tests", () => {
     UI.group([rect1, rect3]);
     assertSelectedElements(rect1, rect2, rect3);
 
+    mouse.reset();
     Keyboard.withModifierKeys({ ctrl: true }, () => {
-      mouse.clickOn(rect1);
+      mouse.click(10, 5);
     });
     assertSelectedElements(rect1);
 

packages/excalidraw/tests/resize.test.tsx

@@ -544,7 +544,9 @@ describe("multiple selection", () => {
       1 + move[1] / selectionHeight,
     );
 
-    UI.resize([rectangle, diamond, ellipse], "se", move);
+    UI.resize([rectangle, diamond, ellipse], "se", move, {
+      shift: true,
+    });
 
     expect(rectangle.x).toBeCloseTo(0);
     expect(rectangle.y).toBeCloseTo(0);
@@ -613,7 +615,9 @@ describe("multiple selection", () => {
       1 + move[1] / selectionHeight,
     );
 
-    UI.resize([line, freedraw], "se", move);
+    UI.resize([line, freedraw], "se", move, {
+      shift: true,
+    });
 
     expect(line.x).toBeCloseTo(60 * scale);
     expect(line.y).toBeCloseTo(40 * scale);
@@ -653,7 +657,9 @@ describe("multiple selection", () => {
       1 - move[1] / selectionHeight,
     );
 
-    UI.resize([horizLine, vertLine, diagLine], "nw", move);
+    UI.resize([horizLine, vertLine, diagLine], "nw", move, {
+      shift: true,
+    });
 
     expect(horizLine.x).toBeCloseTo(selectionWidth * (1 - scale));
     expect(horizLine.y).toBeCloseTo(selectionHeight * (1 - scale));
@@ -703,7 +709,9 @@ describe("multiple selection", () => {
     const rightArrowBinding = { ...rightBoundArrow.endBinding };
     delete rightArrowBinding.gap;
 
-    UI.resize([rectangle, rightBoundArrow], "nw", move);
+    UI.resize([rectangle, rightBoundArrow], "nw", move, {
+      shift: true,
+    });
 
     expect(leftBoundArrow.x).toBeCloseTo(-110);
     expect(leftBoundArrow.y).toBeCloseTo(50);
@@ -751,7 +759,9 @@ describe("multiple selection", () => {
     const move = [80, 0] as [number, number];
     const scale = move[0] / selectionWidth + 1;
     const elementsMap = arrayToMap(h.elements);
-    UI.resize([topArrow.get(), bottomArrow.get()], "se", move);
+    UI.resize([topArrow.get(), bottomArrow.get()], "se", move, {
+      shift: true,
+    });
     const topArrowLabelPos = LinearElementEditor.getBoundTextElementPosition(
       topArrow,
       topArrowLabel,
@@ -815,7 +825,7 @@ describe("multiple selection", () => {
       1 - move[1] / selectionHeight,
     );
 
-    UI.resize([topText, bottomText], "ne", move);
+    UI.resize([topText, bottomText], "ne", move, { shift: true });
 
     expect(topText.x).toBeCloseTo(0);
     expect(topText.y).toBeCloseTo(-selectionHeight * (scale - 1));
@@ -828,7 +838,7 @@ describe("multiple selection", () => {
     expect(bottomText.angle).toEqual(0);
   });
 
-  it("resizes with images", () => {
+  it("resizes with images (proportional)", () => {
     const topImage = API.createElement({
       type: "image",
       x: 0,
@@ -891,7 +901,7 @@ describe("multiple selection", () => {
       1 + (2 * move[1]) / selectionHeight,
     );
 
-    UI.resize([rectangle, ellipse], "se", move, { alt: true });
+    UI.resize([rectangle, ellipse], "se", move, { shift: true, alt: true });
 
     expect(rectangle.x).toBeCloseTo(-200 * scale);
     expect(rectangle.y).toBeCloseTo(-140 * scale);
@@ -954,7 +964,9 @@ describe("multiple selection", () => {
     const scaleY = -scaleX;
     const lineOrigBounds = getBoundsFromPoints(line);
     const elementsMap = arrayToMap(h.elements);
-    UI.resize([line, image, rectangle, boundArrow], "se", move);
+    UI.resize([line, image, rectangle, boundArrow], "se", move, {
+      shift: true,
+    });
     const lineNewBounds = getBoundsFromPoints(line);
     const arrowLabelPos = LinearElementEditor.getBoundTextElementPosition(
       boundArrow,
@@ -979,7 +991,7 @@ describe("multiple selection", () => {
     expect(image.width).toBeCloseTo(100 * -scaleX);
     expect(image.height).toBeCloseTo(100 * scaleY);
     expect(image.angle).toBeCloseTo((Math.PI * 5) / 6);
-    expect(image.scale).toEqual([1, 1]);
+    expect(image.scale).toEqual([-1, 1]);
 
     expect(rectangle.x).toBeCloseTo((180 + 160) * scaleX);
     expect(rectangle.y).toBeCloseTo(60 * scaleY);

packages/excalidraw/types.ts

@@ -40,6 +40,7 @@ import type { IMAGE_MIME_TYPES, MIME_TYPES } from "./constants";
 import { ContextMenuItems } from "./components/ContextMenu";
 import { SnapLine } from "./snapping";
 import { Merge, MaybePromise, ValueOf } from "./utility-types";
+import { StoreActionType } from "./store";
 
 export type Point = Readonly<RoughPoint>;
 
@@ -507,7 +508,7 @@ export type SceneData = {
   elements?: ImportedDataState["elements"];
   appState?: ImportedDataState["appState"];
   collaborators?: Map<SocketId, Collaborator>;
-  commitToStore?: boolean;
+  storeAction?: StoreActionType;
 };
 
 export enum UserIdleState {