fix(test): attempt to fix test flake in collision.test.tsx

Co-authored-by: Jawahar <jawahars_16@live.in>
Co-authored-by: Andrew Aquino <dawneraq@gmail.com>

dev-docs/docs/@excalidraw/excalidraw/api/excalidraw-element-skeleton.mdx

@@ -172,7 +172,7 @@ convertToExcalidrawElements([
     type: "arrow",
     x: 450,
     y: 20,
-    startArrowhead: "dot",
+    startArrowhead: "circle",
     endArrowhead: "triangle",
     strokeColor: "#1971c2",
     strokeWidth: 2,

examples/with-script-in-browser/initialData.tsx

@@ -1,4 +1,4 @@
-import type { ExcalidrawElementSkeleton } from "@excalidraw/excalidraw/data/transform";
+import type { ExcalidrawElementSkeleton } from "@excalidraw/excalidraw/element/transform";
 import type { FileId } from "@excalidraw/excalidraw/element/types";
 
 const elements: ExcalidrawElementSkeleton[] = [

packages/element/src/arrowheads.ts

@@ -0,0 +1,32 @@
+import type { Arrowhead, AnyArrowhead } from "./types";
+
+export const normalizeArrowhead = (
+  arrowhead: AnyArrowhead | null | undefined,
+): Arrowhead | null => {
+  switch (arrowhead) {
+    case undefined:
+    case null:
+      return null;
+    case "dot":
+      return "circle";
+    case "crowfoot_one":
+      return "cardinality_one";
+    case "crowfoot_many":
+      return "cardinality_many";
+    case "crowfoot_one_or_many":
+      return "cardinality_one_or_many";
+    default:
+      return arrowhead;
+  }
+};
+
+export const getArrowheadForPicker = (
+  arrowhead: AnyArrowhead | null | undefined,
+): Arrowhead | null => {
+  const normalizedArrowhead = normalizeArrowhead(arrowhead);
+  if (normalizedArrowhead === null) {
+    return null;
+  }
+
+  return normalizedArrowhead;
+};

packages/element/src/bounds.ts

@@ -709,6 +709,9 @@ const getFreeDrawElementAbsoluteCoords = (
   return [x1, y1, x2, y2, (x1 + x2) / 2, (y1 + y2) / 2];
 };
 
+const CARDINALITY_MARKER_SIZE = 20;
+const CROWFOOT_ARROWHEAD_SIZE = 15;
+
 /** @returns number in pixels */
 export const getArrowheadSize = (arrowhead: Arrowhead): number => {
   switch (arrowhead) {
@@ -717,10 +720,14 @@ export const getArrowheadSize = (arrowhead: Arrowhead): number => {
     case "diamond":
     case "diamond_outline":
       return 12;
-    case "crowfoot_many":
+    case "cardinality_many":
-    case "crowfoot_one":
+    case "cardinality_one_or_many":
-    case "crowfoot_one_or_many":
+    case "cardinality_zero_or_many":
-      return 20;
+      return CROWFOOT_ARROWHEAD_SIZE;
+    case "cardinality_one":
+    case "cardinality_exactly_one":
+    case "cardinality_zero_or_one":
+      return CARDINALITY_MARKER_SIZE;
     default:
       return 15;
   }
@@ -743,7 +750,12 @@ export const getArrowheadPoints = (
   shape: Drawable[],
   position: "start" | "end",
   arrowhead: Arrowhead,
+  offsetMultiplier = 0,
 ) => {
+  if (arrowhead === null) {
+    return null;
+  }
+
   if (shape.length < 1) {
     return null;
   }
@@ -824,29 +836,30 @@ export const getArrowheadPoints = (
   const lengthMultiplier =
     arrowhead === "diamond" || arrowhead === "diamond_outline" ? 0.25 : 0.5;
   const minSize = Math.min(size, length * lengthMultiplier);
-  const xs = x2 - nx * minSize;
+  const tx = x2 - nx * minSize * offsetMultiplier;
-  const ys = y2 - ny * minSize;
+  const ty = y2 - ny * minSize * offsetMultiplier;
+  const xs = tx - nx * minSize;
+  const ys = ty - ny * minSize;
 
-  if (
+  if (arrowhead === "circle" || arrowhead === "circle_outline") {
-    arrowhead === "dot" ||
+    const diameter = Math.hypot(ys - ty, xs - tx) + element.strokeWidth - 2;
-    arrowhead === "circle" ||
+    return [tx, ty, diameter];
-    arrowhead === "circle_outline"
-  ) {
-    const diameter = Math.hypot(ys - y2, xs - x2) + element.strokeWidth - 2;
-    return [x2, y2, diameter];
   }
 
   const angle = getArrowheadAngle(arrowhead);
 
-  if (arrowhead === "crowfoot_many" || arrowhead === "crowfoot_one_or_many") {
+  if (
+    arrowhead === "cardinality_many" ||
+    arrowhead === "cardinality_one_or_many"
+  ) {
     // swap (xs, ys) with (x2, y2)
     const [x3, y3] = pointRotateRads(
-      pointFrom(x2, y2),
+      pointFrom(tx, ty),
       pointFrom(xs, ys),
       degreesToRadians(-angle as Degrees),
     );
     const [x4, y4] = pointRotateRads(
-      pointFrom(x2, y2),
+      pointFrom(tx, ty),
       pointFrom(xs, ys),
       degreesToRadians(angle),
     );
@@ -856,12 +869,12 @@ export const getArrowheadPoints = (
   // Return points
   const [x3, y3] = pointRotateRads(
     pointFrom(xs, ys),
-    pointFrom(x2, y2),
+    pointFrom(tx, ty),
     ((-angle * Math.PI) / 180) as Radians,
   );
   const [x4, y4] = pointRotateRads(
     pointFrom(xs, ys),
-    pointFrom(x2, y2),
+    pointFrom(tx, ty),
     degreesToRadians(angle),
   );
 
@@ -874,9 +887,9 @@ export const getArrowheadPoints = (
       const [px, py] = element.points.length > 1 ? element.points[1] : [0, 0];
 
       [ox, oy] = pointRotateRads(
-        pointFrom(x2 + minSize * 2, y2),
+        pointFrom(tx + minSize * 2, ty),
-        pointFrom(x2, y2),
+        pointFrom(tx, ty),
-        Math.atan2(py - y2, px - x2) as Radians,
+        Math.atan2(py - ty, px - tx) as Radians,
       );
     } else {
       const [px, py] =
@@ -885,16 +898,16 @@ export const getArrowheadPoints = (
           : [0, 0];
 
       [ox, oy] = pointRotateRads(
-        pointFrom(x2 - minSize * 2, y2),
+        pointFrom(tx - minSize * 2, ty),
-        pointFrom(x2, y2),
+        pointFrom(tx, ty),
-        Math.atan2(y2 - py, x2 - px) as Radians,
+        Math.atan2(ty - py, tx - px) as Radians,
       );
     }
 
-    return [x2, y2, x3, y3, ox, oy, x4, y4];
+    return [tx, ty, x3, y3, ox, oy, x4, y4];
   }
 
-  return [x2, y2, x3, y3, x4, y4];
+  return [tx, ty, x3, y3, x4, y4];
 };
 
 // TODO reuse shape.ts

packages/element/src/collision.ts

@@ -465,7 +465,12 @@ export const intersectElementWithLineSegment = (
     case "line":
     case "freedraw":
     case "arrow":
-      return intersectLinearOrFreeDrawWithLineSegment(element, line, onlyFirst);
+      return intersectLinearOrFreeDrawWithLineSegment(
+        element,
+        line,
+        elementsMap,
+        onlyFirst,
+      );
   }
 };
 
@@ -532,11 +537,15 @@ const lineIntersections = (
 const intersectLinearOrFreeDrawWithLineSegment = (
   element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
   segment: LineSegment<GlobalPoint>,
+  elementsMap: ElementsMap,
   onlyFirst = false,
 ): GlobalPoint[] => {
   // NOTE: This is the only one which return the decomposed elements
   // rotated! This is due to taking advantage of roughjs definitions.
-  const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+  const [lines, curves] = deconstructLinearOrFreeDrawElement(
+    element,
+    elementsMap,
+  );
   const intersections: GlobalPoint[] = [];
 
   for (const l of lines) {

packages/element/src/distance.ts

@@ -48,7 +48,7 @@ export const distanceToElement = (
     case "line":
     case "arrow":
     case "freedraw":
-      return distanceToLinearOrFreeDraElement(element, p);
+      return distanceToLinearOrFreeDraElement(element, elementsMap, p);
   }
 };
 
@@ -133,9 +133,13 @@ const distanceToEllipseElement = (
 
 const distanceToLinearOrFreeDraElement = (
   element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
+  elementsMap: ElementsMap,
   p: GlobalPoint,
 ) => {
-  const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+  const [lines, curves] = deconstructLinearOrFreeDrawElement(
+    element,
+    elementsMap,
+  );
   return Math.min(
     ...lines.map((s) => distanceToLineSegment(p, s)),
     ...curves.map((a) => curvePointDistance(a, p)),

packages/element/src/index.ts

@@ -99,3 +99,4 @@ export * from "./typeChecks";
 export * from "./utils";
 export * from "./zindex";
 export * from "./arrows/helpers";
+export * from "./arrowheads";

packages/element/src/linearElementEditor.ts

@@ -476,16 +476,22 @@ export class LinearElementEditor {
       });
     }
 
-    invariant(
+    if (
-      lastClickedPoint > -1 &&
+      lastClickedPoint < 0 ||
-        selectedPointsIndices.includes(lastClickedPoint) &&
+      !selectedPointsIndices.includes(lastClickedPoint) ||
-        element.points[lastClickedPoint],
+      !element.points[lastClickedPoint]
-      `There must be a valid lastClickedPoint in order to drag it. selectedPointsIndices(${JSON.stringify(
+    ) {
-        selectedPointsIndices,
+      console.error(
-      )}) points(0..${
+        `There must be a valid lastClickedPoint in order to drag it. selectedPointsIndices(${JSON.stringify(
-        element.points.length - 1
+          selectedPointsIndices,
-      }) lastClickedPoint(${lastClickedPoint})`,
+        )}) points(0..${
-    );
+          element.points.length - 1
+        }) lastClickedPoint(${lastClickedPoint})`,
+      );
+
+      // Fall back to the actual last point as a last resort.
+      lastClickedPoint = element.points.length - 1;
+    }
 
     // point that's being dragged (out of all selected points)
     const draggingPoint = element.points[lastClickedPoint];
@@ -794,6 +800,7 @@ export class LinearElementEditor {
           element.points[index + 1],
           index,
           appState.zoom,
+          elementsMap,
         )
       ) {
         midpoints.push(null);
@@ -803,6 +810,7 @@ export class LinearElementEditor {
       const segmentMidPoint = LinearElementEditor.getSegmentMidPoint(
         element,
         index + 1,
+        elementsMap,
       );
       midpoints.push(segmentMidPoint);
       index++;
@@ -890,6 +898,7 @@ export class LinearElementEditor {
     endPoint: P,
     index: number,
     zoom: Zoom,
+    elementsMap: ElementsMap,
   ) {
     if (isElbowArrow(element)) {
       if (index >= 0 && index < element.points.length) {
@@ -904,7 +913,10 @@ export class LinearElementEditor {
 
     let distance = pointDistance(startPoint, endPoint);
     if (element.points.length > 2 && element.roundness) {
-      const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+      const [lines, curves] = deconstructLinearOrFreeDrawElement(
+        element,
+        elementsMap,
+      );
 
       invariant(
         lines.length === 0 && curves.length > 0,
@@ -924,6 +936,7 @@ export class LinearElementEditor {
   static getSegmentMidPoint(
     element: NonDeleted<ExcalidrawLinearElement>,
     index: number,
+    elementsMap: ElementsMap,
   ): GlobalPoint {
     if (isElbowArrow(element)) {
       invariant(
@@ -936,7 +949,10 @@ export class LinearElementEditor {
       return pointFrom<GlobalPoint>(element.x + p[0], element.y + p[1]);
     }
 
-    const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+    const [lines, curves] = deconstructLinearOrFreeDrawElement(
+      element,
+      elementsMap,
+    );
 
     invariant(
       (lines.length === 0 && curves.length > 0) ||
@@ -1851,6 +1867,7 @@ export class LinearElementEditor {
       const midSegmentMidpoint = LinearElementEditor.getSegmentMidPoint(
         element,
         index + 1,
+        elementsMap,
       );
 
       x = midSegmentMidpoint[0] - boundTextElement.width / 2;
@@ -2400,7 +2417,7 @@ const pointDraggingUpdates = (
     ? nextArrow.points[0]
     : endBindable
     ? updateBoundPoint(
-        element,
+        nextArrow,
         "endBinding",
         nextArrow.endBinding,
         endBindable,
@@ -2431,7 +2448,7 @@ const pointDraggingUpdates = (
       ? endLocalPoint
       : startBindable
       ? updateBoundPoint(
-          element,
+          nextArrow,
           "startBinding",
           nextArrow.startBinding,
           startBindable,

packages/element/src/selection.ts

@@ -11,6 +11,7 @@ import {
   isBoundToContainer,
   isFrameLikeElement,
   isLinearElement,
+  isTextElement,
 } from "./typeChecks";
 import {
   elementOverlapsWithFrame,
@@ -25,6 +26,7 @@ import type {
   ElementsMap,
   ElementsMapOrArray,
   ExcalidrawElement,
+  NonDeleted,
   NonDeletedExcalidrawElement,
 } from "./types";
 
@@ -288,3 +290,19 @@ export const getSelectionStateForElements = (
     ),
   };
 };
+
+/**
+ * Returns editing or single-selected text element, if any.
+ */
+export const getActiveTextElement = (
+  selectedElements: readonly NonDeleted<ExcalidrawElement>[],
+  appState: Pick<AppState, "editingTextElement">,
+) => {
+  const activeTextElement =
+    appState.editingTextElement ||
+    (selectedElements.length === 1 &&
+      isTextElement(selectedElements[0]) &&
+      selectedElements[0]);
+
+  return activeTextElement || null;
+};

packages/element/src/shape.ts

@@ -57,8 +57,8 @@ import { headingForPointIsHorizontal } from "./heading";
 
 import { canChangeRoundness } from "./comparisons";
 import {
+  elementCenterPoint,
   getArrowheadPoints,
-  getCenterForBounds,
   getDiamondPoints,
   getElementAbsoluteCoords,
 } from "./bounds";
@@ -69,10 +69,10 @@ import type {
   NonDeletedExcalidrawElement,
   ExcalidrawSelectionElement,
   ExcalidrawLinearElement,
-  Arrowhead,
   ExcalidrawFreeDrawElement,
   ElementsMap,
   ExcalidrawLineElement,
+  Arrowhead,
 } from "./types";
 
 import type { Drawable, Options } from "roughjs/bin/core";
@@ -296,6 +296,82 @@ const modifyIframeLikeForRoughOptions = (
   return element;
 };
 
+const generateArrowheadCardinalityOne = (
+  generator: RoughGenerator,
+  arrowheadPoints: number[] | null,
+  lineOptions: Options,
+) => {
+  if (arrowheadPoints === null) {
+    return [];
+  }
+
+  const [, , x3, y3, x4, y4] = arrowheadPoints;
+
+  return [generator.line(x3, y3, x4, y4, lineOptions)];
+};
+
+const generateArrowheadLinesToTip = (
+  generator: RoughGenerator,
+  arrowheadPoints: number[] | null,
+  lineOptions: Options,
+) => {
+  if (arrowheadPoints === null) {
+    return [];
+  }
+
+  const [x2, y2, x3, y3, x4, y4] = arrowheadPoints;
+
+  return [
+    generator.line(x3, y3, x2, y2, lineOptions),
+    generator.line(x4, y4, x2, y2, lineOptions),
+  ];
+};
+
+const getArrowheadLineOptions = (
+  element: ExcalidrawLinearElement,
+  options: Options,
+) => {
+  const lineOptions = { ...options };
+
+  if (element.strokeStyle === "dotted") {
+    // for dotted arrows caps, reduce gap to make it more legible
+    const dash = getDashArrayDotted(element.strokeWidth - 1);
+    lineOptions.strokeLineDash = [dash[0], dash[1] - 1];
+  } else {
+    // for solid/dashed, keep solid arrow cap
+    delete lineOptions.strokeLineDash;
+  }
+  lineOptions.roughness = Math.min(1, lineOptions.roughness || 0);
+
+  return lineOptions;
+};
+
+const generateArrowheadOutlineCircle = (
+  generator: RoughGenerator,
+  options: Options,
+  strokeColor: string,
+  arrowheadPoints: number[] | null,
+  fill: string,
+  diameterScale = 1,
+) => {
+  if (arrowheadPoints === null) {
+    return [];
+  }
+
+  const [x, y, diameter] = arrowheadPoints;
+  const circleOptions = {
+    ...options,
+    fill,
+    fillStyle: "solid" as const,
+    stroke: strokeColor,
+    roughness: Math.min(0.5, options.roughness || 0),
+  };
+
+  delete circleOptions.strokeLineDash;
+
+  return [generator.circle(x, y, diameter * diameterScale, circleOptions)];
+};
+
 const getArrowheadShapes = (
   element: ExcalidrawLinearElement,
   shape: Drawable[],
@@ -306,63 +382,54 @@ const getArrowheadShapes = (
   canvasBackgroundColor: string,
   isDarkMode: boolean,
 ) => {
-  const arrowheadPoints = getArrowheadPoints(
+  if (arrowhead === null) {
-    element,
-    shape,
-    position,
-    arrowhead,
-  );
-
-  if (arrowheadPoints === null) {
     return [];
   }
 
-  const generateCrowfootOne = (
-    arrowheadPoints: number[] | null,
-    options: Options,
-  ) => {
-    if (arrowheadPoints === null) {
-      return [];
-    }
-
-    const [, , x3, y3, x4, y4] = arrowheadPoints;
-
-    return [generator.line(x3, y3, x4, y4, options)];
-  };
-
   const strokeColor = isDarkMode
     ? applyDarkModeFilter(element.strokeColor)
     : element.strokeColor;
+  const backgroundFillColor = isDarkMode
+    ? applyDarkModeFilter(canvasBackgroundColor)
+    : canvasBackgroundColor;
+  const cardinalityOneOrManyOffset = -0.25;
+  const cardinalityZeroCircleScale = 0.8;
 
   switch (arrowhead) {
-    case "dot":
     case "circle":
     case "circle_outline": {
-      const [x, y, diameter] = arrowheadPoints;
+      return generateArrowheadOutlineCircle(
-
+        generator,
-      // always use solid stroke for arrowhead
+        options,
-      delete options.strokeLineDash;
+        strokeColor,
-
+        getArrowheadPoints(element, shape, position, arrowhead),
-      return [
+        arrowhead === "circle_outline" ? backgroundFillColor : strokeColor,
-        generator.circle(x, y, diameter, {
+      );
-          ...options,
-          fill:
-            arrowhead === "circle_outline"
-              ? canvasBackgroundColor
-              : strokeColor,
-
-          fillStyle: "solid",
-          stroke: strokeColor,
-          roughness: Math.min(0.5, options.roughness || 0),
-        }),
-      ];
     }
     case "triangle":
     case "triangle_outline": {
+      const arrowheadPoints = getArrowheadPoints(
+        element,
+        shape,
+        position,
+        arrowhead,
+      );
+
+      if (arrowheadPoints === null) {
+        return [];
+      }
+
       const [x, y, x2, y2, x3, y3] = arrowheadPoints;
+      const triangleOptions = {
+        ...options,
+        fill:
+          arrowhead === "triangle_outline" ? backgroundFillColor : strokeColor,
+        fillStyle: "solid" as const,
+        roughness: Math.min(1, options.roughness || 0),
+      };
 
       // always use solid stroke for arrowhead
-      delete options.strokeLineDash;
+      delete triangleOptions.strokeLineDash;
 
       return [
         generator.polygon(
@@ -372,24 +439,34 @@ const getArrowheadShapes = (
             [x3, y3],
             [x, y],
           ],
-          {
+          triangleOptions,
-            ...options,
-            fill:
-              arrowhead === "triangle_outline"
-                ? canvasBackgroundColor
-                : strokeColor,
-            fillStyle: "solid",
-            roughness: Math.min(1, options.roughness || 0),
-          },
         ),
       ];
     }
     case "diamond":
     case "diamond_outline": {
+      const arrowheadPoints = getArrowheadPoints(
+        element,
+        shape,
+        position,
+        arrowhead,
+      );
+
+      if (arrowheadPoints === null) {
+        return [];
+      }
+
       const [x, y, x2, y2, x3, y3, x4, y4] = arrowheadPoints;
+      const diamondOptions = {
+        ...options,
+        fill:
+          arrowhead === "diamond_outline" ? backgroundFillColor : strokeColor,
+        fillStyle: "solid" as const,
+        roughness: Math.min(1, options.roughness || 0),
+      };
 
       // always use solid stroke for arrowhead
-      delete options.strokeLineDash;
+      delete diamondOptions.strokeLineDash;
 
       return [
         generator.polygon(
@@ -400,53 +477,117 @@ const getArrowheadShapes = (
             [x4, y4],
             [x, y],
           ],
-          {
+          diamondOptions,
-            ...options,
+        ),
-            fill:
+      ];
-              arrowhead === "diamond_outline"
+    }
-                ? canvasBackgroundColor
+    case "cardinality_one":
-                : strokeColor,
+      return generateArrowheadCardinalityOne(
-            fillStyle: "solid",
+        generator,
-            roughness: Math.min(1, options.roughness || 0),
+        getArrowheadPoints(element, shape, position, arrowhead),
-          },
+        getArrowheadLineOptions(element, options),
+      );
+    case "cardinality_many":
+      return generateArrowheadLinesToTip(
+        generator,
+        getArrowheadPoints(element, shape, position, arrowhead),
+        getArrowheadLineOptions(element, options),
+      );
+    case "cardinality_one_or_many": {
+      const lineOptions = getArrowheadLineOptions(element, options);
+
+      return [
+        ...generateArrowheadLinesToTip(
+          generator,
+          getArrowheadPoints(element, shape, position, "cardinality_many"),
+          lineOptions,
+        ),
+        ...generateArrowheadCardinalityOne(
+          generator,
+          getArrowheadPoints(
+            element,
+            shape,
+            position,
+            "cardinality_one",
+            cardinalityOneOrManyOffset,
+          ),
+          lineOptions,
+        ),
+      ];
+    }
+    case "cardinality_exactly_one": {
+      const lineOptions = getArrowheadLineOptions(element, options);
+
+      return [
+        ...generateArrowheadCardinalityOne(
+          generator,
+          getArrowheadPoints(element, shape, position, "cardinality_one", -0.5),
+          lineOptions,
+        ),
+        ...generateArrowheadCardinalityOne(
+          generator,
+          getArrowheadPoints(element, shape, position, "cardinality_one"),
+          lineOptions,
+        ),
+      ];
+    }
+    case "cardinality_zero_or_one": {
+      const lineOptions = getArrowheadLineOptions(element, options);
+
+      return [
+        ...generateArrowheadOutlineCircle(
+          generator,
+          options,
+          strokeColor,
+          getArrowheadPoints(element, shape, position, "circle_outline", 1.5),
+          backgroundFillColor,
+          cardinalityZeroCircleScale,
+        ),
+        ...generateArrowheadCardinalityOne(
+          generator,
+          getArrowheadPoints(element, shape, position, "cardinality_one", -0.5),
+          lineOptions,
+        ),
+      ];
+    }
+    case "cardinality_zero_or_many": {
+      const lineOptions = getArrowheadLineOptions(element, options);
+
+      return [
+        ...generateArrowheadLinesToTip(
+          generator,
+          getArrowheadPoints(element, shape, position, "cardinality_many"),
+          lineOptions,
+        ),
+        ...generateArrowheadOutlineCircle(
+          generator,
+          options,
+          strokeColor,
+          getArrowheadPoints(element, shape, position, "circle_outline", 1.5),
+          backgroundFillColor,
+          cardinalityZeroCircleScale,
         ),
       ];
     }
-    case "crowfoot_one":
-      return generateCrowfootOne(arrowheadPoints, options);
     case "bar":
     case "arrow":
-    case "crowfoot_many":
-    case "crowfoot_one_or_many":
     default: {
-      const [x2, y2, x3, y3, x4, y4] = arrowheadPoints;
+      return generateArrowheadLinesToTip(
-
+        generator,
-      if (element.strokeStyle === "dotted") {
+        getArrowheadPoints(element, shape, position, arrowhead),
-        // for dotted arrows caps, reduce gap to make it more legible
+        getArrowheadLineOptions(element, options),
-        const dash = getDashArrayDotted(element.strokeWidth - 1);
+      );
-        options.strokeLineDash = [dash[0], dash[1] - 1];
-      } else {
-        // for solid/dashed, keep solid arrow cap
-        delete options.strokeLineDash;
-      }
-      options.roughness = Math.min(1, options.roughness || 0);
-      return [
-        generator.line(x3, y3, x2, y2, options),
-        generator.line(x4, y4, x2, y2, options),
-        ...(arrowhead === "crowfoot_one_or_many"
-          ? generateCrowfootOne(
-              getArrowheadPoints(element, shape, position, "crowfoot_one"),
-              options,
-            )
-          : []),
-      ];
     }
   }
 };
 
 export const generateLinearCollisionShape = (
   element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
-) => {
+  elementsMap: ElementsMap,
+): {
+  op: string;
+  data: number[];
+}[] => {
   const generator = new RoughGenerator();
   const options: Options = {
     seed: element.seed,
@@ -455,20 +596,7 @@ export const generateLinearCollisionShape = (
     roughness: 0,
     preserveVertices: true,
   };
-  const center = getCenterForBounds(
+  const center = elementCenterPoint(element, elementsMap);
-    // Need a non-rotated center point
-    element.points.reduce(
-      (acc, point) => {
-        return [
-          Math.min(element.x + point[0], acc[0]),
-          Math.min(element.y + point[1], acc[1]),
-          Math.max(element.x + point[0], acc[2]),
-          Math.max(element.y + point[1], acc[3]),
-        ];
-      },
-      [Infinity, Infinity, -Infinity, -Infinity],
-    ),
-  );
 
   switch (element.type) {
     case "line":

packages/element/src/textElement.ts

@@ -347,6 +347,7 @@ export const getContainerCenter = (
     midSegmentMidpoint = LinearElementEditor.getSegmentMidPoint(
       container,
       index + 1,
+      elementsMap,
     );
   }
   return { x: midSegmentMidpoint[0], y: midSegmentMidpoint[1] };
@@ -441,7 +442,8 @@ const VALID_CONTAINER_TYPES = new Set([
 
 export const isValidTextContainer = (element: {
   type: ExcalidrawElementType;
-}) => VALID_CONTAINER_TYPES.has(element.type);
+}): element is ExcalidrawTextContainer =>
+  VALID_CONTAINER_TYPES.has(element.type);
 
 export const computeContainerDimensionForBoundText = (
   dimension: number,

packages/element/src/textWrapping.ts

@@ -4,6 +4,22 @@ import { charWidth, getLineWidth } from "./textMeasurements";
 
 import type { FontString } from "./types";
 
+/**
+ * This module approximates browser-like soft wrapping for Excalidraw text.
+ *
+ * The flow is:
+ * 1. `parseTokens()` splits a hard line into breakable tokens using a unicode-aware regex.
+ * 2. `getWrappedTextLines()` reflows each hard line into one or more visual lines and
+ *    records where each visual line came from in the source text.
+ * 3. `wrapLine()` assembles tokens into lines, and `wrapWord()` handles a single token
+ *    that is wider than the available width.
+ * 4. `trimLine()` / `trimLineEndAtSoftBreak()` mirror browser behavior around trailing
+ *    whitespace so the rendered text stays consistent with what users see on canvas.
+ *
+ * Mostly, you'll want to use wrapText(). getWrappedTextLines() is for callers
+ * that need metadata such as mapping visual lines back to `originalText`
+ * for caret placement or future editor features.
+ */
 let cachedCjkRegex: RegExp | undefined;
 let cachedLineBreakRegex: RegExp | undefined;
 let cachedEmojiRegex: RegExp | undefined;
@@ -358,6 +374,10 @@ const Break = {
 
 /**
  * Breaks the line into the tokens based on the found line break opporutnities.
+ *
+ * Note: tokenization normalizes to NFC first so decomposed graphemes are treated as
+ * their composed variants for wrapping. Any code that needs exact source offsets should
+ * keep in mind that this assumes the input text is already NFC-normalized.
  */
 export const parseTokens = (line: string) => {
   const breakLineRegex = getLineBreakRegex();
@@ -370,56 +390,120 @@ export const parseTokens = (line: string) => {
 
 /**
  * Wraps the original text into the lines based on the given width.
+ *
+ * This is a convenience adapter over `getWrappedTextLines()` for call sites
+ * that only need the rendered wrapped string and not the source offsets.
  */
 export const wrapText = (
   text: string,
   font: FontString,
   maxWidth: number,
 ): string => {
+  return getWrappedTextLines(text, font, maxWidth)
+    .map((line) => line.text)
+    .join("\n");
+};
+
+/**
+ * A single rendered visual line produced from the original text.
+ *
+ * `start` and `end` are end-exclusive code-unit offsets into the original text, and do
+ * not include synthetic soft line breaks inserted by this module. If trailing whitespace
+ * was trimmed away at a wrap boundary, `end` points to the last rendered character.
+ */
+export type WrappedTextLine = {
+  text: string;
+  start: number;
+  end: number;
+};
+
+/**
+ * Splits only on existing hard line breaks and preserves original offsets.
+ */
+const getHardLineBreaks = (text: string): WrappedTextLine[] => {
+  let offset = 0;
+
+  return text.split("\n").map((line) => {
+    const start = offset;
+    const end = start + line.length;
+
+    offset = end + 1;
+
+    return {
+      text: line,
+      start,
+      end,
+    };
+  });
+};
+
+/**
+ * Returns the rendered visual lines together with their source offsets.
+ *
+ * This is the source-of-truth wrapping pipeline for callers that need more than the
+ * final wrapped string, for example caret placement or future editor/rich-text mapping.
+ */
+export const getWrappedTextLines = (
+  text: string,
+  font: FontString,
+  maxWidth: number,
+): WrappedTextLine[] => {
   // if maxWidth is not finite or NaN which can happen in case of bugs in
   // computation, we need to make sure we don't continue as we'll end up
   // in an infinite loop
   if (!Number.isFinite(maxWidth) || maxWidth < 0) {
-    return text;
+    return getHardLineBreaks(text);
   }
 
-  const lines: Array<string> = [];
+  const lines: WrappedTextLine[] = [];
-  const originalLines = text.split("\n");
+  let offset = 0;
 
-  for (const originalLine of originalLines) {
+  for (const originalLine of text.split("\n")) {
-    const currentLineWidth = getLineWidth(originalLine, font);
+    const originalLineWidth = getLineWidth(originalLine, font);
 
-    if (currentLineWidth <= maxWidth) {
+    if (originalLineWidth <= maxWidth) {
-      lines.push(originalLine);
+      lines.push({
-      continue;
+        text: originalLine,
+        start: offset,
+        end: offset + originalLine.length,
+      });
+    } else {
+      lines.push(...wrapLine(originalLine, font, maxWidth, offset));
     }
 
-    const wrappedLine = wrapLine(originalLine, font, maxWidth);
+    offset += originalLine.length + 1;
-    lines.push(...wrappedLine);
   }
 
-  return lines.join("\n");
+  return lines;
 };
 
 /**
- * Wraps the original line into the lines based on the given width.
+ * Wraps a single hard line into one or more visual lines.
+ *
+ * The line-local offsets are tracked in original-text code units so
+ * we can map the visual line back to the source.
  */
 const wrapLine = (
   line: string,
   font: FontString,
   maxWidth: number,
-): string[] => {
+  lineStart: number,
-  const lines: Array<string> = [];
+): WrappedTextLine[] => {
+  const lines: WrappedTextLine[] = [];
   const tokens = parseTokens(line);
-  const tokenIterator = tokens[Symbol.iterator]();
 
   let currentLine = "";
+  let currentLineStart = lineStart;
+  let currentLineEnd = lineStart;
   let currentLineWidth = 0;
+  // Tracks the next token's code-unit position in the original source string.
+  let tokenOffset = lineStart;
+  let tokenIndex = 0;
 
-  let iterator = tokenIterator.next();
+  while (tokenIndex < tokens.length) {
-
+    const token = tokens[tokenIndex];
-  while (!iterator.done) {
+    const tokenStart = tokenOffset;
-    const token = iterator.value;
+    const tokenEnd = tokenStart + token.length;
     const testLine = currentLine + token;
 
     // cache single codepoint whitespace, CJK or emoji width calc. as kerning should not apply here
@@ -429,37 +513,59 @@ const wrapLine = (
 
     // build up the current line, skipping length check for possibly trailing whitespaces
     if (/\s/.test(token) || testLineWidth <= maxWidth) {
+      if (!currentLine) {
+        currentLineStart = tokenStart;
+      }
       currentLine = testLine;
+      currentLineEnd = tokenEnd;
       currentLineWidth = testLineWidth;
-      iterator = tokenIterator.next();
+      tokenOffset = tokenEnd;
+      tokenIndex++;
       continue;
     }
 
     // current line is empty => just the token (word) is longer than `maxWidth` and needs to be wrapped
     if (!currentLine) {
-      const wrappedWord = wrapWord(token, font, maxWidth);
+      const wrappedWord = wrapWord(token, font, maxWidth, tokenStart);
-      const trailingLine = wrappedWord[wrappedWord.length - 1] ?? "";
+      const trailingLine = wrappedWord[wrappedWord.length - 1] ?? {
+        text: "",
+        start: tokenStart,
+        end: tokenStart,
+      };
       const precedingLines = wrappedWord.slice(0, -1);
 
       lines.push(...precedingLines);
 
       // trailing line of the wrapped word might still be joined with next token/s
-      currentLine = trailingLine;
+      currentLine = trailingLine.text;
-      currentLineWidth = getLineWidth(trailingLine, font);
+      currentLineStart = trailingLine.start;
-      iterator = tokenIterator.next();
+      currentLineEnd = trailingLine.end;
+      currentLineWidth = getLineWidth(trailingLine.text, font);
+      tokenOffset = tokenEnd;
+      tokenIndex++;
     } else {
       // push & reset, but don't iterate on the next token, as we didn't use it yet!
-      lines.push(currentLine.trimEnd());
+      lines.push(
+        trimLineEndAtSoftBreak(currentLine, currentLineStart, currentLineEnd),
+      );
 
       // purposefully not iterating and not setting `currentLine` to `token`, so that we could use a simple !currentLine check above
       currentLine = "";
+      currentLineStart = tokenStart;
+      currentLineEnd = tokenStart;
       currentLineWidth = 0;
     }
   }
 
   // iterator done, push the trailing line if exists
   if (currentLine) {
-    const trailingLine = trimLine(currentLine, font, maxWidth);
+    const trailingLine = trimLine(
+      currentLine,
+      currentLineStart,
+      currentLineEnd,
+      font,
+      maxWidth,
+    );
     lines.push(trailingLine);
   }
 
@@ -467,59 +573,100 @@ const wrapLine = (
 };
 
 /**
- * Wraps the word into the lines based on the given width.
+ * Wraps a single word that could not be placed on an empty line as-is.
  */
 const wrapWord = (
   word: string,
   font: FontString,
   maxWidth: number,
-): Array<string> => {
+  wordStart: number,
+): WrappedTextLine[] => {
   // multi-codepoint emojis are already broken apart and shouldn't be broken further
   if (getEmojiRegex().test(word)) {
-    return [word];
+    return [
+      {
+        text: word,
+        start: wordStart,
+        end: wordStart + word.length,
+      },
+    ];
   }
 
   satisfiesWordInvariant(word);
 
-  const lines: Array<string> = [];
+  const lines: WrappedTextLine[] = [];
   const chars = Array.from(word);
 
   let currentLine = "";
+  let currentLineStart = wordStart;
+  let currentLineEnd = wordStart;
   let currentLineWidth = 0;
+  let offset = wordStart;
 
   for (const char of chars) {
+    const charStart = offset;
+    const charEnd = charStart + char.length;
     const _charWidth = charWidth.calculate(char, font);
     const testLineWidth = currentLineWidth + _charWidth;
 
     if (testLineWidth <= maxWidth) {
+      if (!currentLine) {
+        currentLineStart = charStart;
+      }
       currentLine = currentLine + char;
+      currentLineEnd = charEnd;
       currentLineWidth = testLineWidth;
+      offset = charEnd;
       continue;
     }
 
     if (currentLine) {
-      lines.push(currentLine);
+      lines.push({
+        text: currentLine,
+        start: currentLineStart,
+        end: currentLineEnd,
+      });
     }
 
     currentLine = char;
+    currentLineStart = charStart;
+    currentLineEnd = charEnd;
     currentLineWidth = _charWidth;
+    offset = charEnd;
   }
 
   if (currentLine) {
-    lines.push(currentLine);
+    lines.push({
+      text: currentLine,
+      start: currentLineStart,
+      end: currentLineEnd,
+    });
   }
 
   return lines;
 };
 
 /**
- * Similarly to browsers, does not trim all trailing whitespaces, but only those exceeding the `maxWidth`.
+ * Trims trailing whitespace that is exceeding the `maxWidth`.
+ *
+ * Used for the trailing visual line of a hard line, where some trailing
+ * whitespace may still be visible if it fits into the available width.
  */
-const trimLine = (line: string, font: FontString, maxWidth: number) => {
+const trimLine = (
+  line: string,
+  start: number,
+  end: number,
+  font: FontString,
+  maxWidth: number,
+): WrappedTextLine => {
   const shouldTrimWhitespaces = getLineWidth(line, font) > maxWidth;
 
   if (!shouldTrimWhitespaces) {
-    return line;
+    return {
+      text: line,
+      start,
+      end,
+    };
   }
 
   // defensively default to `trimeEnd` in case the regex does not match
@@ -543,7 +690,30 @@ const trimLine = (line: string, font: FontString, maxWidth: number) => {
     trimmedLineWidth = testLineWidth;
   }
 
-  return trimmedLine;
+  return {
+    text: trimmedLine,
+    start,
+    end: end - (line.length - trimmedLine.length),
+  };
+};
+
+/**
+ * Used for internal soft-wrap boundaries, where trailing whitespace should not
+ * survive into the rendered line even though it still exists in the original
+ * text.
+ */
+const trimLineEndAtSoftBreak = (
+  line: string,
+  start: number,
+  end: number,
+): WrappedTextLine => {
+  const trimmedLine = line.trimEnd();
+
+  return {
+    text: trimmedLine,
+    start,
+    end: end - (line.length - trimmedLine.length),
+  };
 };
 
 /**

packages/element/src/types.ts

@@ -303,19 +303,32 @@ export type PointsPositionUpdates = Map<
   { point: LocalPoint; isDragging?: boolean }
 >;
 
+export type CardinalityArrowhead =
+  | "cardinality_one"
+  | "cardinality_many"
+  | "cardinality_one_or_many"
+  | "cardinality_exactly_one"
+  | "cardinality_zero_or_one"
+  | "cardinality_zero_or_many";
+
+export type ArrowheadLegacy =
+  | "dot"
+  | "crowfoot_one"
+  | "crowfoot_many"
+  | "crowfoot_one_or_many";
+
 export type Arrowhead =
   | "arrow"
   | "bar"
-  | "dot" // legacy. Do not use for new elements.
   | "circle"
   | "circle_outline"
   | "triangle"
   | "triangle_outline"
   | "diamond"
   | "diamond_outline"
-  | "crowfoot_one"
+  | CardinalityArrowhead;
-  | "crowfoot_many"
+
-  | "crowfoot_one_or_many";
+export type AnyArrowhead = Arrowhead | ArrowheadLegacy;
 
 export type ExcalidrawLinearElement = _ExcalidrawElementBase &
   Readonly<{

packages/element/src/utils.ts

@@ -124,6 +124,7 @@ const setElementShapesCacheEntry = <T extends ExcalidrawElement>(
  */
 export function deconstructLinearOrFreeDrawElement(
   element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
+  elementsMap: ElementsMap,
 ): [LineSegment<GlobalPoint>[], Curve<GlobalPoint>[]] {
   const cachedShape = getElementShapesCacheEntry(element, 0);
 
@@ -131,10 +132,7 @@ export function deconstructLinearOrFreeDrawElement(
     return cachedShape;
   }
 
-  const ops = generateLinearCollisionShape(element) as {
+  const ops = generateLinearCollisionShape(element, elementsMap);
-    op: string;
-    data: number[];
-  }[];
   const lines = [];
   const curves = [];
 

packages/element/tests/collision.test.tsx

@@ -1,8 +1,7 @@
-import { arrayToMap } from "@excalidraw/common";
+import { arrayToMap, ROUNDNESS } from "@excalidraw/common";
 import { type GlobalPoint, type LocalPoint, pointFrom } from "@excalidraw/math";
 import { Excalidraw } from "@excalidraw/excalidraw";
 import { API } from "@excalidraw/excalidraw/tests/helpers/api";
-import { UI } from "@excalidraw/excalidraw/tests/helpers/ui";
 import "@excalidraw/utils/test-utils";
 import { render } from "@excalidraw/excalidraw/tests/test-utils";
 
@@ -10,29 +9,29 @@ import * as distance from "../src/distance";
 import { hitElementItself } from "../src/collision";
 
 describe("check rotated elements can be hit:", () => {
-  beforeEach(async () => {
-    localStorage.clear();
-    await render(<Excalidraw handleKeyboardGlobally={true} />);
-  });
-
   it("arrow", () => {
-    UI.createElement("arrow", {
+    const element = API.createElement({
+      type: "arrow",
       x: 0,
       y: 0,
       width: 124,
       height: 302,
       angle: 1.8700426423973724,
+      roundness: { type: ROUNDNESS.PROPORTIONAL_RADIUS },
+      endArrowhead: "arrow",
       points: [
         [0, 0],
         [120, -198],
         [-4, -302],
       ] as LocalPoint[],
     });
+    const elementsMap = arrayToMap([element]);
+
     const hit = hitElementItself({
       point: pointFrom<GlobalPoint>(88, -68),
-      element: window.h.elements[0],
+      element,
       threshold: 10,
-      elementsMap: window.h.scene.getNonDeletedElementsMap(),
+      elementsMap,
     });
     expect(hit).toBe(true);
   });

packages/element/tests/textWrapping.test.ts

@@ -1,4 +1,8 @@
-import { wrapText, parseTokens } from "../src/textWrapping";
+import {
+  getWrappedTextLines,
+  parseTokens,
+  wrapText,
+} from "../src/textWrapping";
 
 import type { FontString } from "../src/types";
 
@@ -102,6 +106,71 @@ describe("Test wrapText", () => {
     expect(res2).toBe(`\tA)\none\ntab\n- two\ntabs\n- 8\nspace\ns`);
   });
 
+  it("should retain original text offsets for wrapped lines", () => {
+    expect(getWrappedTextLines("Hello World!", font, 60)).toEqual([
+      {
+        text: "Hello",
+        start: 0,
+        end: 5,
+      },
+      {
+        text: "World!",
+        start: 6,
+        end: 12,
+      },
+    ]);
+  });
+
+  it("should exclude whitespace trimmed away at soft-wrap boundaries from line offsets", () => {
+    expect(getWrappedTextLines("  Hello  World", font, 90)).toEqual([
+      {
+        text: "  Hello",
+        start: 0,
+        end: 7,
+      },
+      {
+        text: "World",
+        start: 9,
+        end: 14,
+      },
+    ]);
+  });
+
+  it("should retain offsets when wrapping a single long token", () => {
+    expect(getWrappedTextLines("Excalidraw", font, 50)).toEqual([
+      {
+        text: "Excal",
+        start: 0,
+        end: 5,
+      },
+      {
+        text: "idraw",
+        start: 5,
+        end: 10,
+      },
+    ]);
+  });
+
+  it("should preserve empty hard lines in metadata", () => {
+    expect(getWrappedTextLines("A\n\nB", font, 100)).toEqual([
+      {
+        text: "A",
+        start: 0,
+        end: 1,
+      },
+      {
+        text: "",
+        start: 2,
+        end: 2,
+      },
+      {
+        text: "B",
+        start: 3,
+        end: 4,
+      },
+    ]);
+  });
+
   describe("When text is CJK", () => {
     it("should break each CJK character when width is very small", () => {
       // "안녕하세요" (Hangul) + "こんにちは世界" (Hiragana, Kanji) + "ｺﾝﾆﾁハ" (Katakana) + "你好" (Han) = "Hello Hello World Hello Hi"

packages/excalidraw/CHANGELOG.md

@@ -18,22 +18,13 @@ Please add the latest change on the top under the correct section.
 ### Breaking changes
 
 - Renamed the `excalidrawAPI` prop to `onExcalidrawAPI`.
+  - `onExcalidrawAPI` is now called on mount (instead of during constructor), and later on unmount (with `null` value). The API may be removed altogether in the future (you can use `onMount` & `onUmount` to manage the `ExcalidrawAPI` object (e.g. to cache it to a global state), already).
 
 ### Features
 
-- Added `onMount` and `onInitialize` props. `onMount` receives `{ excalidrawAPI, container }` once the editor root is mounted, and `onInitialize` fires once the initial scene has loaded.
+- Added `ExcalidrawAPI.isDestroyed` flag. Set to `true` once the editor unmounts. Calling any `get*` method, `onStateChange`, or `onEvent` on a destroyed API instance will throw in development and `console.error` in production. The `ExcalidrawAPI` will be reset to `null` on umount, but to be extra safe, you should check `ExcalidrawAPI.isDestroyed` before calling these methods to guard against subtle race conditions in your code.
 
-  ```tsx
+- Added `onMount`, `onInitialize`, and `onUnmount` props. `onMount` receives `{ excalidrawAPI, container }` once the editor root is mounted. `onInitialize` fires once the initial scene has loaded. `onUnmount` fires just before unmounting.
-  <Excalidraw
-    onMount={({ excalidrawAPI, container }) => {
-      console.log(container);
-      excalidrawAPI.scrollToContent();
-    }}
-    onInitialize={(api) => {
-      api.refresh();
-    }}
-  />
-  ```
 
 - Same events are also accessible imperatively through `api.onEvent(...)`.
 
@@ -41,7 +32,6 @@ Please add the latest change on the top under the correct section.
   <Excalidraw
     onExcalidrawAPI={(api) => {
       api.onEvent("editor:mount", ({ excalidrawAPI, container }) => {
-        excalidrawAPI.scrollToContent();
         console.log(container);
       });
 
@@ -54,7 +44,9 @@ Please add the latest change on the top under the correct section.
 
   Note that in future releases, most, if not all, `excalidrawAPI.on*` subscriptions will be removed in favor of `excalidrawAPI.onEvent(name)`.
 
-- Exported `ExcalidrawAPIProvider`, `useExcalidrawAPI`, and `useAppStateValue` from the package entrypoint. The imperative API also now exposes `onStateChange`.
+- Also added `"editor:unmount"` lifecycle event, only accessible via `api.onEvent("editor:unmount")`.
+
+- Exported `<ExcalidrawAPIProvider/>`, `useExcalidrawAPI()`, `useAppStateValue(prop | props | selectorFunction)`, and `useOnExcalidrawStateChange(prop | props | selectorFunction, callback)` from the package. The imperative API also now exposes `onStateChange(prop | props | selectorFunction, callback?)`, and `onEvent(name, callback)`.
 
   ```tsx
   <ExcalidrawAPIProvider>
@@ -63,6 +55,9 @@ Please add the latest change on the top under the correct section.
   </ExcalidrawAPIProvider>;
 
   function Logger() {
+    // initially null before the ExcalidrawAPIProvider initializes ater
+    // <Excalidraw/> renders
+    // When <Excalidraw/> unmounts, is reset back to null
     const api = useExcalidrawAPI();
 
     useAppStateValue("viewModeEnabled", (viewModeEnabled) => {

packages/excalidraw/README.md

@@ -1,10 +1,10 @@
 # Excalidraw
 
-**Excalidraw** is exported as a component to be directly embedded in your project.
+**Excalidraw** is exported as a React component that you can embed directly in your app.
 
 ## Installation
 
-Use `npm` or `yarn` to install the package.
+Install the package together with its React peer dependencies.
 
 ```bash
 npm install react react-dom @excalidraw/excalidraw
@@ -12,34 +12,131 @@ npm install react react-dom @excalidraw/excalidraw
 yarn add react react-dom @excalidraw/excalidraw
 ```
 
-> **Note**: If you don't want to wait for the next stable release and try out the unreleased changes, use `@excalidraw/excalidraw@next`.
+> **Note**: If you want to try unreleased changes, use `@excalidraw/excalidraw@next`.
 
-#### Self-hosting fonts
+## Quick start
 
-By default, Excalidraw will try to download all the used fonts from the [CDN](https://esm.run/@excalidraw/excalidraw/dist/prod).
+The minimum working setup has two easy-to-miss requirements:
 
-For self-hosting purposes, you'll have to copy the content of the folder `node_modules/@excalidraw/excalidraw/dist/prod/fonts` to the path where your assets should be served from (i.e. `public/` directory in your project). In that case, you should also set `window.EXCALIDRAW_ASSET_PATH` to the very same path, i.e. `/` in case it's in the root:
+1. Import the package CSS:
 
-```js
+```ts
-<script>window.EXCALIDRAW_ASSET_PATH = "/";</script>
+import "@excalidraw/excalidraw/index.css";
 ```
 
-### Dimensions of Excalidraw
+2. Render Excalidraw inside a container with a non-zero height.
 
-Excalidraw takes _100%_ of `width` and `height` of the containing block so make sure the container in which you render Excalidraw has non zero dimensions.
+```tsx
+import { Excalidraw } from "@excalidraw/excalidraw";
+import "@excalidraw/excalidraw/index.css";
+
+export default function App() {
+  return (
+    <div style={{ height: "100vh" }}>
+      <Excalidraw />
+    </div>
+  );
+}
+```
+
+Excalidraw fills `100%` of the width and height of its parent. If the parent has no height, the canvas will not be visible.
+
+## Next.js / SSR frameworks
+
+Excalidraw should be rendered on the client. In SSR frameworks such as Next.js, use a client component and load it dynamically with SSR disabled.
+
+```tsx
+// app/components/ExcalidrawClient.tsx
+"use client";
+
+import { Excalidraw } from "@excalidraw/excalidraw";
+import "@excalidraw/excalidraw/index.css";
+
+export default function ExcalidrawClient() {
+  return (
+    <div style={{ height: "100vh" }}>
+      <Excalidraw />
+    </div>
+  );
+}
+```
+
+```tsx
+// app/page.tsx
+import dynamic from "next/dynamic";
+
+const ExcalidrawClient = dynamic(
+  () => import("./components/ExcalidrawClient"),
+  { ssr: false },
+);
+
+export default function Page() {
+  return <ExcalidrawClient />;
+}
+```
+
+See the local examples for complete setups:
+
+- [examples/with-nextjs](https://github.com/excalidraw/excalidraw/tree/master/examples/with-nextjs)
+- [examples/with-script-in-browser](https://github.com/excalidraw/excalidraw/tree/master/examples/with-script-in-browser)
+
+## LLM / agent tips
+
+If an LLM or coding agent is setting up Excalidraw, these shortcuts usually save more time than re-prompting:
+
+- Start with a plain `<Excalidraw />` in a `100vh` container. Add refs, `initialData`, persistence, or custom UI only after the base embed works.
+- If the canvas is blank, check the CSS import and parent height first. Those are the two most common integration failures.
+- In Next.js or other SSR frameworks, assume client-only rendering first. Use `"use client"` and `dynamic(..., { ssr: false })` before debugging hydration or `window is not defined` errors.
+- If imports or entrypoints are unclear, inspect `node_modules/@excalidraw/excalidraw/package.json`. The installed package exports are the source of truth.
+- Do not set `window.EXCALIDRAW_ASSET_PATH` unless you are intentionally self-hosting fonts/assets.
+- When docs and generated code drift, copy the nearest working example from this repo, especially `examples/with-nextjs` or `examples/with-script-in-browser`.
+
+## Migrating to `@excalidraw/excalidraw@0.18.x`
+
+Version `0.18.x` removes the old `types/`-prefixed deep import paths. If you were importing types from `@excalidraw/excalidraw/types/...`, switch to the new type-only subpaths below.
+
+| Old path | New path |
+| --- | --- |
+| `@excalidraw/excalidraw/types/data/transform.js` | `@excalidraw/excalidraw/element/transform` |
+| `@excalidraw/excalidraw/types/data/types.js` | `@excalidraw/excalidraw/data/types` |
+| `@excalidraw/excalidraw/types/element/types.js` | `@excalidraw/excalidraw/element/types` |
+| `@excalidraw/excalidraw/types/utility-types.js` | `@excalidraw/excalidraw/common/utility-types` |
+| `@excalidraw/excalidraw/types/types.js` | `@excalidraw/excalidraw/types` |
+
+Drop the `.js` extension. The new package `exports` map resolves these paths without it.
+
+These deep subpaths are for `import type` only. Runtime imports should come from the package root, plus `@excalidraw/excalidraw/index.css` for styles.
+
+For example:
+
+```ts
+import { exportToSvg } from "@excalidraw/excalidraw";
+```
+
+## Self-hosting fonts
+
+By default, Excalidraw downloads the fonts it needs from the [CDN](https://esm.run/@excalidraw/excalidraw/dist/prod).
+
+For self-hosting, copy the contents of `node_modules/@excalidraw/excalidraw/dist/prod/fonts` into the path where your app serves static assets, for example `public/`. Then set `window.EXCALIDRAW_ASSET_PATH` to that same path:
+
+```html
+<script>
+  window.EXCALIDRAW_ASSET_PATH = "/";
+</script>
+```
 
 ## Demo
 
-Go to [CodeSandbox](https://codesandbox.io/p/sandbox/github/excalidraw/excalidraw/tree/master/examples/with-script-in-browser) example.
+Try the [CodeSandbox example](https://codesandbox.io/p/sandbox/github/excalidraw/excalidraw/tree/master/examples/with-script-in-browser).
 
 ## Integration
 
-Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/integration).
+Read the [integration docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/integration).
 
 ## API
 
-Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/api).
+Read the [API docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/api).
 
 ## Contributing
 
-Head over to the [docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/contributing).
+Read the [contributing docs](https://docs.excalidraw.com/docs/@excalidraw/excalidraw/contributing).

packages/excalidraw/actions/actionDeselect.ts

@@ -0,0 +1,145 @@
+import {
+  getElementsInGroup,
+  isSomeElementSelected,
+  makeNextSelectedElementIds,
+  selectGroupsForSelectedElements,
+} from "@excalidraw/element";
+import { CaptureUpdateAction } from "@excalidraw/element";
+import { KEYS, isWritableElement, updateActiveTool } from "@excalidraw/common";
+
+import type { GroupId } from "@excalidraw/element/types";
+
+import { register } from "./register";
+
+import type { AppClassProperties, AppState } from "../types";
+
+const getNextActiveTool = (
+  appState: Readonly<AppState>,
+  app: AppClassProperties,
+) => {
+  if (appState.activeTool.type === "eraser") {
+    return updateActiveTool(appState, {
+      ...(appState.activeTool.lastActiveTool || {
+        type: app.state.preferredSelectionTool.type,
+      }),
+      lastActiveToolBeforeEraser: null,
+    });
+  }
+
+  return updateActiveTool(appState, {
+    type: app.state.preferredSelectionTool.type,
+  });
+};
+
+const getParentEditingGroupId = (
+  appState: Readonly<AppState>,
+  app: AppClassProperties,
+  selectedElementIds: AppState["selectedElementIds"],
+): GroupId | null => {
+  if (!appState.editingGroupId) {
+    return null;
+  }
+
+  const nonDeletedElements = app.scene.getNonDeletedElements();
+  const selectedElements = app.scene.getSelectedElements({
+    selectedElementIds,
+    elements: nonDeletedElements,
+  });
+  const candidateElements = selectedElements.length
+    ? selectedElements
+    : getElementsInGroup(nonDeletedElements, appState.editingGroupId);
+
+  for (const element of candidateElements) {
+    const editingGroupIndex = element.groupIds.indexOf(appState.editingGroupId);
+    if (editingGroupIndex !== -1 && element.groupIds[editingGroupIndex + 1]) {
+      return element.groupIds[editingGroupIndex + 1] as GroupId;
+    }
+  }
+
+  return null;
+};
+
+export const actionDeselect = register({
+  name: "deselect",
+  label: "",
+  trackEvent: false,
+  perform: (_elements, appState, _, app) => {
+    const activeTool = getNextActiveTool(appState, app);
+
+    if (appState.editingGroupId) {
+      const nonDeletedElements = app.scene.getNonDeletedElements();
+      const selectedElementIds =
+        Object.keys(appState.selectedElementIds).length > 0
+          ? appState.selectedElementIds
+          : getElementsInGroup(
+              nonDeletedElements,
+              appState.editingGroupId,
+            ).reduce((acc, element) => {
+              acc[element.id] = true;
+              return acc;
+            }, {} as Record<string, true>);
+
+      return {
+        appState: {
+          ...appState,
+          ...selectGroupsForSelectedElements(
+            {
+              editingGroupId: getParentEditingGroupId(
+                appState,
+                app,
+                selectedElementIds,
+              ),
+              selectedElementIds,
+            },
+            nonDeletedElements,
+            appState,
+            app,
+          ),
+          activeEmbeddable: null,
+          activeTool,
+          selectedLinearElement: null,
+          selectionElement: null,
+          showHyperlinkPopup: false,
+          suggestedBinding: null,
+        },
+        captureUpdate: CaptureUpdateAction.IMMEDIATELY,
+      };
+    }
+
+    return {
+      appState: {
+        ...appState,
+        activeEmbeddable: null,
+        activeTool,
+        editingGroupId: null,
+        selectedElementIds: makeNextSelectedElementIds({}, appState),
+        selectedGroupIds: {},
+        selectedLinearElement: null,
+        selectionElement: null,
+        showHyperlinkPopup: false,
+        suggestedBinding: null,
+      },
+      captureUpdate: CaptureUpdateAction.IMMEDIATELY,
+    };
+  },
+  keyTest: (event, appState, _, app) => {
+    if (event.key !== KEYS.ESCAPE) {
+      return false;
+    }
+
+    if (isWritableElement(event.target)) {
+      return false;
+    }
+
+    return (
+      !appState.newElement &&
+      appState.multiElement === null &&
+      !appState.selectedLinearElement?.isEditing &&
+      (appState.activeEmbeddable !== null ||
+        appState.activeTool.type !== app.state.preferredSelectionTool.type ||
+        !!appState.editingGroupId ||
+        !!appState.selectedLinearElement ||
+        isSomeElementSelected(app.scene.getNonDeletedElements(), appState))
+    );
+  },
+});

packages/excalidraw/actions/actionExport.tsx

@@ -399,7 +399,7 @@ export const actionSaveFileToDisk = register({
         appState: {
           openDialog: null,
           fileHandle: savedFileHandle,
-          toast: { message: t("toast.fileSaved") },
+          toast: { message: t("toast.fileSaved"), duration: 3000 },
         },
       };
     } catch (error: any) {

packages/excalidraw/actions/actionFinalize.tsx

@@ -348,9 +348,7 @@ export const actionFinalize = register<FormData>({
     };
   },
   keyTest: (event, appState) =>
-    (event.key === KEYS.ESCAPE &&
+    (event.key === KEYS.ESCAPE && appState.selectedLinearElement?.isEditing) ||
-      (appState.selectedLinearElement?.isEditing ||
-        (!appState.newElement && appState.multiElement === null))) ||
     ((event.key === KEYS.ESCAPE || event.key === KEYS.ENTER) &&
       appState.multiElement !== null),
   PanelComponent: ({ appState, updateData, data }) => (

packages/excalidraw/actions/actionProperties.tsx

@@ -36,6 +36,7 @@ import {
 import { LinearElementEditor } from "@excalidraw/element";
 
 import { newElementWith } from "@excalidraw/element";
+import { getArrowheadForPicker } from "@excalidraw/element";
 
 import {
   getBoundTextElement,
@@ -124,9 +125,12 @@ import {
   sharpArrowIcon,
   roundArrowIcon,
   elbowArrowIcon,
-  ArrowheadCrowfootIcon,
+  ArrowheadCardinalityExactlyOneIcon,
-  ArrowheadCrowfootOneIcon,
+  ArrowheadCardinalityManyIcon,
-  ArrowheadCrowfootOneOrManyIcon,
+  ArrowheadCardinalityOneIcon,
+  ArrowheadCardinalityOneOrManyIcon,
+  ArrowheadCardinalityZeroOrManyIcon,
+  ArrowheadCardinalityZeroOrOneIcon,
 } from "../components/icons";
 
 import { Fonts } from "../fonts";
@@ -187,7 +191,7 @@ export const getFormValue = function <T extends Primitive>(
   elements: readonly ExcalidrawElement[],
   app: AppClassProperties,
   getAttribute: (element: ExcalidrawElement) => T,
-  isRelevantElement: true | ((element: ExcalidrawElement) => boolean),
+  elementPredicate: true | ((element: ExcalidrawElement) => boolean),
   defaultValue: T | ((isSomeElementSelected: boolean) => T),
 ): T {
   const editingTextElement = app.state.editingTextElement;
@@ -205,9 +209,9 @@ export const getFormValue = function <T extends Primitive>(
     if (hasSelection) {
       const selectedElements = app.scene.getSelectedElements(app.state);
       const targetElements =
-        isRelevantElement === true
+        elementPredicate === true
           ? selectedElements
-          : selectedElements.filter((el) => isRelevantElement(el));
+          : selectedElements.filter((el) => elementPredicate(el));
 
       ret =
         reduceToCommonValue(targetElements, getAttribute) ??
@@ -726,9 +730,28 @@ export const actionChangeOpacity = register<ExcalidrawElement["opacity"]>({
       captureUpdate: CaptureUpdateAction.IMMEDIATELY,
     };
   },
-  PanelComponent: ({ app, updateData }) => (
+  PanelComponent: ({ elements, appState, app, updateData }) => {
-    <Range updateData={updateData} app={app} testId="opacity" />
+    const opacity = getFormValue(
-  ),
+      elements,
+      app,
+      (element) => element.opacity,
+      true,
+      (hasSelection) => (hasSelection ? null : appState.currentItemOpacity),
+    );
+
+    return (
+      <Range
+        label={t("labels.opacity")}
+        value={opacity ?? appState.currentItemOpacity}
+        hasCommonValue={opacity !== null}
+        onChange={updateData}
+        min={0}
+        max={100}
+        step={10}
+        testId="opacity"
+      />
+    );
+  },
 });
 
 export const actionChangeFontSize = register<ExcalidrawTextElement["fontSize"]>(
@@ -1550,80 +1573,117 @@ export const actionChangeRoundness = register<"sharp" | "round">({
 });
 
 const getArrowheadOptions = (flip: boolean) => {
-  return [
+  return {
-    {
+    visibleSections: [
-      value: null,
+      {
-      text: t("labels.arrowhead_none"),
+        name: "default",
-      keyBinding: "q",
+        options: [
-      icon: <ArrowheadNoneIcon flip={flip} />,
+          {
-    },
+            value: null,
-    {
+            text: t("labels.arrowhead_none"),
-      value: "arrow",
+            keyBinding: "q",
-      text: t("labels.arrowhead_arrow"),
+            icon: <ArrowheadNoneIcon flip={flip} />,
-      keyBinding: "w",
+          },
-      icon: <ArrowheadArrowIcon flip={flip} />,
+          {
-    },
+            value: "arrow",
-    {
+            text: t("labels.arrowhead_arrow"),
-      value: "triangle",
+            keyBinding: "w",
-      text: t("labels.arrowhead_triangle"),
+            icon: <ArrowheadArrowIcon flip={flip} />,
-      icon: <ArrowheadTriangleIcon flip={flip} />,
+          },
-      keyBinding: "e",
+          {
-    },
+            value: "triangle",
-    {
+            text: t("labels.arrowhead_triangle"),
-      value: "triangle_outline",
+            icon: <ArrowheadTriangleIcon flip={flip} />,
-      text: t("labels.arrowhead_triangle_outline"),
+            keyBinding: "e",
-      icon: <ArrowheadTriangleOutlineIcon flip={flip} />,
+          },
-      keyBinding: "r",
+          {
-    },
+            value: "triangle_outline",
-    {
+            text: t("labels.arrowhead_triangle_outline"),
-      value: "circle",
+            icon: <ArrowheadTriangleOutlineIcon flip={flip} />,
-      text: t("labels.arrowhead_circle"),
+            keyBinding: "r",
-      keyBinding: "a",
+          },
-      icon: <ArrowheadCircleIcon flip={flip} />,
+        ],
-    },
+      },
-    {
+    ],
-      value: "circle_outline",
+    hiddenSections: [
-      text: t("labels.arrowhead_circle_outline"),
+      {
-      keyBinding: "s",
+        name: "default",
-      icon: <ArrowheadCircleOutlineIcon flip={flip} />,
+        options: [
-    },
+          {
-    {
+            value: "circle",
-      value: "diamond",
+            text: t("labels.arrowhead_circle"),
-      text: t("labels.arrowhead_diamond"),
+            keyBinding: "a",
-      icon: <ArrowheadDiamondIcon flip={flip} />,
+            icon: <ArrowheadCircleIcon flip={flip} />,
-      keyBinding: "d",
+          },
-    },
+          {
-    {
+            value: "circle_outline",
-      value: "diamond_outline",
+            text: t("labels.arrowhead_circle_outline"),
-      text: t("labels.arrowhead_diamond_outline"),
+            keyBinding: "s",
-      icon: <ArrowheadDiamondOutlineIcon flip={flip} />,
+            icon: <ArrowheadCircleOutlineIcon flip={flip} />,
-      keyBinding: "f",
+          },
-    },
+          {
-    {
+            value: "diamond",
-      value: "bar",
+            text: t("labels.arrowhead_diamond"),
-      text: t("labels.arrowhead_bar"),
+            icon: <ArrowheadDiamondIcon flip={flip} />,
-      keyBinding: "z",
+            keyBinding: "d",
-      icon: <ArrowheadBarIcon flip={flip} />,
+          },
-    },
+          {
-    {
+            value: "diamond_outline",
-      value: "crowfoot_one",
+            text: t("labels.arrowhead_diamond_outline"),
-      text: t("labels.arrowhead_crowfoot_one"),
+            icon: <ArrowheadDiamondOutlineIcon flip={flip} />,
-      icon: <ArrowheadCrowfootOneIcon flip={flip} />,
+            keyBinding: "f",
-      keyBinding: "x",
+          },
-    },
+          {
-    {
+            value: "bar",
-      value: "crowfoot_many",
+            text: t("labels.arrowhead_bar"),
-      text: t("labels.arrowhead_crowfoot_many"),
+            keyBinding: "z",
-      icon: <ArrowheadCrowfootIcon flip={flip} />,
+            icon: <ArrowheadBarIcon flip={flip} />,
-      keyBinding: "c",
+          },
-    },
+        ],
-    {
+      },
-      value: "crowfoot_one_or_many",
+      {
-      text: t("labels.arrowhead_crowfoot_one_or_many"),
+        name: t("labels.cardinality"),
-      icon: <ArrowheadCrowfootOneOrManyIcon flip={flip} />,
+        options: [
-      keyBinding: "v",
+          {
-    },
+            value: "cardinality_one",
-  ] as const;
+            text: t("labels.arrowhead_cardinality_one"),
+            icon: <ArrowheadCardinalityOneIcon flip={flip} />,
+            keyBinding: "x",
+          },
+          {
+            value: "cardinality_many",
+            text: t("labels.arrowhead_cardinality_many"),
+            icon: <ArrowheadCardinalityManyIcon flip={flip} />,
+            keyBinding: "c",
+          },
+          {
+            value: "cardinality_one_or_many",
+            text: t("labels.arrowhead_cardinality_one_or_many"),
+            icon: <ArrowheadCardinalityOneOrManyIcon flip={flip} />,
+            keyBinding: "v",
+          },
+          {
+            value: "cardinality_exactly_one",
+            text: t("labels.arrowhead_cardinality_exactly_one"),
+            icon: <ArrowheadCardinalityExactlyOneIcon flip={flip} />,
+            keyBinding: null,
+          },
+          {
+            value: "cardinality_zero_or_one",
+            text: t("labels.arrowhead_cardinality_zero_or_one"),
+            icon: <ArrowheadCardinalityZeroOrOneIcon flip={flip} />,
+            keyBinding: null,
+          },
+          {
+            value: "cardinality_zero_or_many",
+            text: t("labels.arrowhead_cardinality_zero_or_many"),
+            icon: <ArrowheadCardinalityZeroOrManyIcon flip={flip} />,
+            keyBinding: null,
+          },
+        ],
+      },
+    ],
+  } as const;
 };
 
 export const actionChangeArrowhead = register<{
@@ -1667,45 +1727,52 @@ export const actionChangeArrowhead = register<{
   },
   PanelComponent: ({ elements, appState, updateData, app }) => {
     const isRTL = getLanguage().rtl;
+    const startArrowheadOptions = useMemo(
+      () => getArrowheadOptions(!isRTL),
+      [isRTL],
+    );
+    const endArrowheadOptions = useMemo(
+      () => getArrowheadOptions(!!isRTL),
+      [isRTL],
+    );
 
     return (
       <fieldset>
         <legend>{t("labels.arrowheads")}</legend>
         <div className="iconSelectList buttonList">
           <IconPicker
+            visibleSections={startArrowheadOptions.visibleSections}
+            hiddenSections={startArrowheadOptions.hiddenSections}
             label="arrowhead_start"
-            options={getArrowheadOptions(!isRTL)}
             value={getFormValue<Arrowhead | null>(
               elements,
               app,
               (element) =>
                 isLinearElement(element) && canHaveArrowheads(element.type)
-                  ? element.startArrowhead
+                  ? getArrowheadForPicker(element.startArrowhead)
                   : appState.currentItemStartArrowhead,
               true,
               (hasSelection) =>
                 hasSelection ? null : appState.currentItemStartArrowhead,
             )}
             onChange={(value) => updateData({ position: "start", type: value })}
-            numberOfOptionsToAlwaysShow={4}
           />
           <IconPicker
+            visibleSections={endArrowheadOptions.visibleSections}
+            hiddenSections={endArrowheadOptions.hiddenSections}
             label="arrowhead_end"
-            group="arrowheads"
-            options={getArrowheadOptions(!!isRTL)}
             value={getFormValue<Arrowhead | null>(
               elements,
               app,
               (element) =>
                 isLinearElement(element) && canHaveArrowheads(element.type)
-                  ? element.endArrowhead
+                  ? getArrowheadForPicker(element.endArrowhead)
                   : appState.currentItemEndArrowhead,
               true,
               (hasSelection) =>
                 hasSelection ? null : appState.currentItemEndArrowhead,
             )}
             onChange={(value) => updateData({ position: "end", type: value })}
-            numberOfOptionsToAlwaysShow={4}
           />
         </div>
       </fieldset>

packages/excalidraw/actions/actionTextAutoResize.ts

@@ -1,24 +1,24 @@
 import { getFontString } from "@excalidraw/common";
 
-import { newElementWith } from "@excalidraw/element";
+import { isExcalidrawElement, newElementWith } from "@excalidraw/element";
 import { measureText } from "@excalidraw/element";
 
 import { isTextElement } from "@excalidraw/element";
 
 import { CaptureUpdateAction } from "@excalidraw/element";
 
+import type { ExcalidrawElement } from "@excalidraw/element/types";
+
 import { getSelectedElements } from "../scene";
 
 import { register } from "./register";
 
-import type { AppClassProperties } from "../types";
-
 export const actionTextAutoResize = register({
   name: "autoResize",
   label: "labels.autoResize",
   icon: null,
   trackEvent: { category: "element" },
-  predicate: (elements, appState, _: unknown, app: AppClassProperties) => {
+  predicate: (elements, appState, _: unknown) => {
     const selectedElements = getSelectedElements(elements, appState);
     return (
       selectedElements.length === 1 &&
@@ -26,13 +26,18 @@ export const actionTextAutoResize = register({
       !selectedElements[0].autoResize
     );
   },
-  perform: (elements, appState, _, app) => {
+  perform: (elements, appState, targetElement) => {
     const selectedElements = getSelectedElements(elements, appState);
 
+    const targetTextElement =
+      isExcalidrawElement(targetElement) && isTextElement(targetElement)
+        ? targetElement
+        : (selectedElements[0] as ExcalidrawElement | undefined);
+
     return {
       appState,
       elements: elements.map((element) => {
-        if (element.id === selectedElements[0].id && isTextElement(element)) {
+        if (element.id === targetTextElement?.id && isTextElement(element)) {
           const metrics = measureText(
             element.originalText,
             getFontString(element),

packages/excalidraw/actions/index.ts

@@ -34,6 +34,7 @@ export {
 export { actionSetEmbeddableAsActiveTool } from "./actionEmbeddable";
 
 export { actionFinalize } from "./actionFinalize";
+export { actionDeselect } from "./actionDeselect";
 
 export {
   actionChangeProjectName,

packages/excalidraw/actions/types.ts

@@ -114,6 +114,7 @@ export type ActionName =
   | "distributeVertically"
   | "flipHorizontal"
   | "flipVertical"
+  | "deselect"
   | "viewMode"
   | "exportWithDarkMode"
   | "toggleTheme"

packages/excalidraw/components/App.tsx

@@ -257,6 +257,7 @@ import {
   handleFocusPointPointerUp,
   maybeHandleArrowPointlikeDrag,
   getUncroppedWidthAndHeight,
+  getActiveTextElement,
 } from "@excalidraw/element";
 
 import type { GlobalPoint, LocalPoint, Radians } from "@excalidraw/math";
@@ -416,6 +417,7 @@ import {
 import { ElementCanvasButtons } from "../components/ElementCanvasButtons";
 import { LaserTrails } from "../laser-trails";
 import { withBatchedUpdates, withBatchedUpdatesThrottled } from "../reactUtils";
+import { isPointHittingTextAutoResizeHandle } from "../textAutoResizeHandle";
 import { textWysiwyg } from "../wysiwyg/textWysiwyg";
 import { isOverScrollBars } from "../scene/scrollbars";
 
@@ -517,6 +519,7 @@ EditorInterfaceContext.displayName = "EditorInterfaceContext";
 const editorLifecycleEventBehavior = {
   "editor:mount": { cardinality: "once", replay: "last" },
   "editor:initialize": { cardinality: "once", replay: "last" },
+  "editor:unmount": { cardinality: "once", replay: "last" },
 } as const;
 
 export const ExcalidrawContainerContext = React.createContext<{
@@ -556,7 +559,7 @@ export const ExcalidrawAPIContext =
 ExcalidrawAPIContext.displayName = "ExcalidrawAPIContext";
 
 export const ExcalidrawAPISetContext = React.createContext<
-  ((api: ExcalidrawImperativeAPI) => void) | null
+  ((api: ExcalidrawImperativeAPI | null) => void) | null
 >(null);
 ExcalidrawAPISetContext.displayName = "ExcalidrawAPISetContext";
 
@@ -683,9 +686,15 @@ class App extends React.Component<AppProps, AppState> {
   lastPointerDownEvent: React.PointerEvent<HTMLElement> | null = null;
   lastPointerUpEvent: React.PointerEvent<HTMLElement> | PointerEvent | null =
     null;
+  // TODO this is a hack and we should ideally unify touch and pointer events
+  // and implement our own double click handling end-to-end (currently we're
+  // using a mix of native browser for click events and manual for touch -
+  // and browser doubleClick sucks to begin with)
+  lastPointerUpIsDoubleClick: boolean = false;
   lastPointerMoveEvent: PointerEvent | null = null;
   /** current frame pointer cords */
   lastPointerMoveCoords: { x: number; y: number } | null = null;
+  private lastCompletedCanvasClicks: { x: number; y: number }[] = [];
   /** previous frame pointer coords */
   previousPointerMoveCoords: { x: number; y: number } | null = null;
   lastViewportPosition = { x: 0, y: 0 };
@@ -731,6 +740,50 @@ class App extends React.Component<AppProps, AppState> {
 
   api: ExcalidrawImperativeAPI;
 
+  private createExcalidrawAPI(): ExcalidrawImperativeAPI {
+    const api: ExcalidrawImperativeAPI = {
+      isDestroyed: false,
+      updateScene: this.updateScene,
+      applyDeltas: this.applyDeltas,
+      mutateElement: this.mutateElement,
+      updateLibrary: this.library.updateLibrary,
+      addFiles: this.addFiles,
+      resetScene: this.resetScene,
+      getSceneElementsIncludingDeleted: this.getSceneElementsIncludingDeleted,
+      getSceneElementsMapIncludingDeleted:
+        this.getSceneElementsMapIncludingDeleted,
+      history: {
+        clear: this.resetHistory,
+      },
+      scrollToContent: this.scrollToContent,
+      getSceneElements: this.getSceneElements,
+      getAppState: () => this.state,
+      getFiles: () => this.files,
+      getName: this.getName,
+      registerAction: (action: Action) => {
+        this.actionManager.registerAction(action);
+      },
+      refresh: this.refresh,
+      setToast: this.setToast,
+      id: this.id,
+      setActiveTool: this.setActiveTool,
+      setCursor: this.setCursor,
+      resetCursor: this.resetCursor,
+      getEditorInterface: () => this.editorInterface,
+      updateFrameRendering: this.updateFrameRendering,
+      toggleSidebar: this.toggleSidebar,
+      onChange: (cb) => this.onChangeEmitter.on(cb),
+      onIncrement: (cb) => this.store.onStoreIncrementEmitter.on(cb),
+      onPointerDown: (cb) => this.onPointerDownEmitter.on(cb),
+      onPointerUp: (cb) => this.onPointerUpEmitter.on(cb),
+      onScrollChange: (cb) => this.onScrollChangeEmitter.on(cb),
+      onUserFollow: (cb) => this.onUserFollowEmitter.on(cb),
+      onStateChange: this.onStateChange,
+      onEvent: this.onEvent,
+    };
+    return api;
+  }
+
   constructor(props: AppProps) {
     super(props);
     const defaultAppState = getDefaultAppState();
@@ -791,47 +844,11 @@ class App extends React.Component<AppProps, AppState> {
     this.actionManager.registerAction(createUndoAction(this.history));
     this.actionManager.registerAction(createRedoAction(this.history));
 
-    this.api = {
+    // in case internal editor APIs call this early, otherwise we need
-      updateScene: this.updateScene,
+    // to construct this in componentDidMount because componentWillUnmount
-      applyDeltas: this.applyDeltas,
+    // will invalidate it (so in StrictMode, doing this in constructor alone
-      mutateElement: this.mutateElement,
+    // would be a problem)
-      updateLibrary: this.library.updateLibrary,
+    this.api = this.createExcalidrawAPI();
-      addFiles: this.addFiles,
-      resetScene: this.resetScene,
-      getSceneElementsIncludingDeleted: this.getSceneElementsIncludingDeleted,
-      getSceneElementsMapIncludingDeleted:
-        this.getSceneElementsMapIncludingDeleted,
-      history: {
-        clear: this.resetHistory,
-      },
-      scrollToContent: this.scrollToContent,
-      getSceneElements: this.getSceneElements,
-      getAppState: () => this.state,
-      getFiles: () => this.files,
-      getName: this.getName,
-      registerAction: (action: Action) => {
-        this.actionManager.registerAction(action);
-      },
-      refresh: this.refresh,
-      setToast: this.setToast,
-      id: this.id,
-      setActiveTool: this.setActiveTool,
-      setCursor: this.setCursor,
-      resetCursor: this.resetCursor,
-      getEditorInterface: () => this.editorInterface,
-      updateFrameRendering: this.updateFrameRendering,
-      toggleSidebar: this.toggleSidebar,
-      onChange: (cb) => this.onChangeEmitter.on(cb),
-      onIncrement: (cb) => this.store.onStoreIncrementEmitter.on(cb),
-      onPointerDown: (cb) => this.onPointerDownEmitter.on(cb),
-      onPointerUp: (cb) => this.onPointerUpEmitter.on(cb),
-      onScrollChange: (cb) => this.onScrollChangeEmitter.on(cb),
-      onUserFollow: (cb) => this.onUserFollowEmitter.on(cb),
-      onStateChange: this.onStateChange,
-      onEvent: this.onEvent,
-    } as const;
-
-    props.onExcalidrawAPI?.(this.api);
   }
 
   updateEditorAtom = <Value, Args extends unknown[], Result>(
@@ -1239,6 +1256,26 @@ class App extends React.Component<AppProps, AppState> {
     ) as NullableGridSize;
   };
 
+  private getTextCreationGridPoint = (x: number, y: number) => {
+    const effectiveGridSize = this.getEffectiveGridSize();
+
+    if (effectiveGridSize === null) {
+      return null;
+    }
+
+    const getTextCreationGridCoordinate = (coordinate: number) => {
+      const topLeftGridPoint =
+        Math.floor(coordinate / effectiveGridSize) * effectiveGridSize;
+
+      return topLeftGridPoint;
+    };
+
+    return {
+      x: getTextCreationGridCoordinate(x),
+      y: getTextCreationGridCoordinate(y),
+    };
+  };
+
   private getHTMLIFrameElement(
     element: ExcalidrawIframeLikeElement,
   ): HTMLIFrameElement | undefined {
@@ -1429,6 +1466,21 @@ class App extends React.Component<AppProps, AppState> {
     return true;
   }
 
+  private isDoubleClick = (
+    lastPointerEvent:
+      | PointerEvent
+      | React.PointerEvent<HTMLElement>
+      | undefined
+      | null,
+    currentPointerEvent: PointerEvent | React.PointerEvent<HTMLElement>,
+  ) => {
+    return (
+      lastPointerEvent != null &&
+      currentPointerEvent.timeStamp - lastPointerEvent.timeStamp <=
+        TAP_TWICE_TIMEOUT
+    );
+  };
+
   private isIframeLikeElementCenter(
     el: ExcalidrawIframeLikeElement | null,
     event: React.PointerEvent<HTMLElement> | PointerEvent,
@@ -2312,6 +2364,7 @@ class App extends React.Component<AppProps, AppState> {
                             }
                             handleCanvasRef={this.handleInteractiveCanvasRef}
                             onContextMenu={this.handleCanvasContextMenu}
+                            onClick={this.handleCanvasClick}
                             onPointerMove={this.handleCanvasPointerMove}
                             onPointerUp={this.handleCanvasPointerUp}
                             onPointerCancel={this.removePointer}
@@ -3003,6 +3056,8 @@ class App extends React.Component<AppProps, AppState> {
 
   public async componentDidMount() {
     this.unmounted = false;
+    this.api = this.createExcalidrawAPI();
+
     this.excalidrawContainerValue.container =
       this.excalidrawContainerRef.current;
 
@@ -3089,10 +3144,35 @@ class App extends React.Component<AppProps, AppState> {
 
     this.editorLifecycleEvents.emit("editor:mount", mountPayload);
     this.props.onMount?.(mountPayload);
+    this.props.onExcalidrawAPI?.(this.api);
   }
 
   public componentWillUnmount() {
+    // we're recreating the api object reference so that the
+    // <ExcalidrawAPIContext.Provider/> picks up on it
+    this.api = { ...this.api, isDestroyed: true };
+
+    for (const key of Object.keys(this.api) as (keyof typeof this.api)[]) {
+      if (
+        (key.startsWith("get") ||
+          key === "onStateChange" ||
+          key === "onEvent") &&
+        typeof this.api[key] === "function"
+      ) {
+        (this.api as any)[key] = () => {
+          throw new Error(
+            "ExcalidrawAPI is no longer usable after the editor has been unmounted and will return invalid/empty data. You should check for `ExcalidrawAPI.isDestroyed` before calling get* methods on subscribing to state/event changes.",
+          );
+        };
+      }
+    }
+
+    this.editorLifecycleEvents.emit("editor:unmount");
+    this.props.onUnmount?.();
+    this.props.onExcalidrawAPI?.(null);
+
     (window as any).launchQueue?.setConsumer(() => {});
+
     this.renderer.destroy();
     this.scene.destroy();
     this.scene = new Scene();
@@ -3538,10 +3618,14 @@ class App extends React.Component<AppProps, AppState> {
         this.lassoTrail.endPath();
         this.deselectElements();
 
-        // @ts-ignore
         this.handleCanvasDoubleClick({
           clientX: touch.clientX,
           clientY: touch.clientY,
+          type: "touch",
+          altKey: false,
+          ctrlKey: false,
+          metaKey: false,
+          shiftKey: false,
         });
       }
       didTapTwice = false;
@@ -3667,7 +3751,7 @@ class App extends React.Component<AppProps, AppState> {
     if (!isPlainPaste && isMaybeMermaidDefinition(data.text)) {
       const api = await import("@excalidraw/mermaid-to-excalidraw");
       try {
-        const { elements: skeletonElements, files } =
+        const { elements: skeletonElements, files = {} } =
           await api.parseMermaidToExcalidraw(data.text);
 
         const elements = convertToExcalidrawElements(skeletonElements, {
@@ -5581,8 +5665,14 @@ class App extends React.Component<AppProps, AppState> {
     element: ExcalidrawTextElement,
     {
       isExistingElement = false,
+      initialCaretSceneCoords = null,
     }: {
       isExistingElement?: boolean;
+      /**
+       * supply null if no caret positioning is desired, and instead
+       * text should be auto-selected
+       */
+      initialCaretSceneCoords?: { x: number; y: number } | null;
     },
   ) {
     const elementsMap = this.scene.getElementsMapIncludingDeleted();
@@ -5635,13 +5725,13 @@ class App extends React.Component<AppProps, AppState> {
         const isDeleted = !nextOriginalText.trim();
         updateElement(nextOriginalText, isDeleted);
 
-        // select the created text element only if submitting via keyboard
+        // keyboard-submit keeps focus on the edited object. For bound text, keep
-        // (when submitting via click it should act as signal to deselect)
+        // the container selected even if the text becomes empty and is deleted.
-        if (!isDeleted && viaKeyboard) {
+        const elementIdToSelect = viaKeyboard
-          const elementIdToSelect = element.containerId
+          ? element.containerId || (!isDeleted ? element.id : null)
-            ? element.containerId
+          : null;
-            : element.id;
 
+        if (elementIdToSelect) {
           // needed to ensure state is updated before "finalize" action
           // that's invoked on keyboard-submit as well
           // TODO either move this into finalize as well, or handle all state
@@ -5685,6 +5775,7 @@ class App extends React.Component<AppProps, AppState> {
       element,
       excalidrawContainer: this.excalidrawContainerRef.current,
       app: this,
+      initialCaretSceneCoords,
       // when text is selected, it's hard (at least on iOS) to re-position the
       // caret (i.e. deselect). There's not much use for always selecting
       // the text on edit anyway (and users can select-all from contextmenu
@@ -5708,6 +5799,68 @@ class App extends React.Component<AppProps, AppState> {
     });
   }
 
+  private getSelectedTextElement(
+    container?: ExcalidrawTextContainer | null,
+  ): NonDeleted<ExcalidrawTextElement> | null {
+    const selectedElements = this.scene.getSelectedElements(this.state);
+
+    if (selectedElements.length !== 1) {
+      return null;
+    }
+
+    const selectedElement = selectedElements[0]!;
+
+    if (isTextElement(selectedElement)) {
+      return selectedElement;
+    }
+
+    if (!container) {
+      return null;
+    }
+
+    return getBoundTextElement(
+      selectedElement,
+      this.scene.getNonDeletedElementsMap(),
+    );
+  }
+
+  private getSelectedTextEditingContainerAtPosition(
+    hitElement: NonDeletedExcalidrawElement | null,
+    sceneCoords: { x: number; y: number },
+  ): ExcalidrawTextContainer | null | undefined {
+    const selectedElements = this.scene.getSelectedElements(this.state);
+
+    if (
+      selectedElements.length !== 1 ||
+      !hitElement ||
+      hitElement.id !== selectedElements[0]!.id
+    ) {
+      return null;
+    }
+
+    const selectedElement = selectedElements[0]!;
+
+    if (isTextElement(selectedElement)) {
+      return null;
+    }
+
+    if (!isValidTextContainer(selectedElement)) {
+      return undefined;
+    }
+
+    const textElement = this.getSelectedTextElement(selectedElement);
+    const hitTextElement = this.getTextElementAtPosition(
+      sceneCoords.x,
+      sceneCoords.y,
+    );
+
+    if (!textElement || hitTextElement?.id !== textElement.id) {
+      return undefined;
+    }
+
+    return selectedElement;
+  }
+
   private getTextElementAtPosition(
     x: number,
     y: number,
@@ -5721,6 +5874,58 @@ class App extends React.Component<AppProps, AppState> {
     return null;
   }
 
+  private isHittingTextAutoResizeHandle = (
+    selectedElements: NonDeleted<ExcalidrawElement>[],
+    point: Readonly<{ x: number; y: number }>,
+  ): boolean => {
+    const activeTextElement = getActiveTextElement(
+      selectedElements,
+      this.state,
+    );
+
+    if (
+      activeTextElement &&
+      !activeTextElement.isDeleted &&
+      !activeTextElement.autoResize &&
+      isPointHittingTextAutoResizeHandle(
+        point,
+        activeTextElement,
+        this.state.zoom.value,
+        this.editorInterface.formFactor,
+      )
+    ) {
+      return true;
+    }
+
+    return false;
+  };
+
+  private handleTextAutoResizeHandlePointerDown = (
+    selectedElements: NonDeleted<ExcalidrawElement>[],
+    point: Readonly<{ x: number; y: number }>,
+  ) => {
+    const activeTextElement = getActiveTextElement(
+      selectedElements,
+      this.state,
+    );
+    if (
+      !activeTextElement ||
+      !this.isHittingTextAutoResizeHandle(selectedElements, point)
+    ) {
+      return false;
+    }
+
+    this.actionManager.executeAction(
+      actionTextAutoResize,
+      "ui",
+      // we need to pass down the element since it may already be deselected
+      // due to the pointerdown
+      activeTextElement,
+    );
+    this.resetCursor();
+    return true;
+  };
+
   // NOTE: Hot path for hit testing, so avoid unnecessary computations
   private getElementAtPosition(
     x: number,
@@ -5933,6 +6138,7 @@ class App extends React.Component<AppProps, AppState> {
     insertAtParentCenter = true,
     container,
     autoEdit = true,
+    initialCaretSceneCoords,
   }: {
     /** X position to insert text at */
     sceneX: number;
@@ -5942,6 +6148,7 @@ class App extends React.Component<AppProps, AppState> {
     insertAtParentCenter?: boolean;
     container?: ExcalidrawTextContainer | null;
     autoEdit?: boolean;
+    initialCaretSceneCoords?: { x: number; y: number };
   }) => {
     let shouldBindToContainer = false;
 
@@ -5962,24 +6169,9 @@ class App extends React.Component<AppProps, AppState> {
         shouldBindToContainer = true;
       }
     }
-    let existingTextElement: NonDeleted<ExcalidrawTextElement> | null = null;
+    const existingTextElement =
-
+      this.getSelectedTextElement(container) ||
-    const selectedElements = this.scene.getSelectedElements(this.state);
+      this.getTextElementAtPosition(sceneX, sceneY);
-
-    if (selectedElements.length === 1) {
-      if (isTextElement(selectedElements[0])) {
-        existingTextElement = selectedElements[0];
-      } else if (container) {
-        existingTextElement = getBoundTextElement(
-          selectedElements[0],
-          this.scene.getNonDeletedElementsMap(),
-        );
-      } else {
-        existingTextElement = this.getTextElementAtPosition(sceneX, sceneY);
-      }
-    } else {
-      existingTextElement = this.getTextElementAtPosition(sceneX, sceneY);
-    }
 
     const fontFamily =
       existingTextElement?.fontFamily || this.state.currentItemFontFamily;
@@ -6026,11 +6218,32 @@ class App extends React.Component<AppProps, AppState> {
       y: sceneY,
     });
 
+    const textCreationGridPoint = this.getTextCreationGridPoint(sceneX, sceneY);
+
+    const newTextElementPosition = parentCenterPosition
+      ? {
+          x: parentCenterPosition.elementCenterX,
+          y: parentCenterPosition.elementCenterY,
+        }
+      : !existingTextElement
+      ? {
+          x: textCreationGridPoint?.x ?? sceneX,
+          y:
+            textCreationGridPoint === null
+              ? // Free text starts from a point cursor, so center the first line box on it.
+                sceneY - getLineHeightInPx(fontSize, lineHeight) / 2
+              : textCreationGridPoint.y,
+        }
+      : {
+          x: sceneX,
+          y: sceneY,
+        };
+
     const element =
       existingTextElement ||
       newTextElement({
-        x: parentCenterPosition ? parentCenterPosition.elementCenterX : sceneX,
+        x: newTextElementPosition.x,
-        y: parentCenterPosition ? parentCenterPosition.elementCenterY : sceneY,
+        y: newTextElementPosition.y,
         strokeColor: this.state.currentItemStrokeColor,
         backgroundColor: this.state.currentItemBackgroundColor,
         fillStyle: this.state.currentItemFillStyle,
@@ -6080,6 +6293,9 @@ class App extends React.Component<AppProps, AppState> {
     if (autoEdit || existingTextElement || container) {
       this.handleTextWysiwyg(element, {
         isExistingElement: !!existingTextElement,
+        initialCaretSceneCoords: existingTextElement
+          ? initialCaretSceneCoords
+          : null,
       });
     } else {
       this.setState({
@@ -6105,9 +6321,48 @@ class App extends React.Component<AppProps, AppState> {
     }
   };
 
+  private shouldHandleBrowserCanvasDoubleClick = (type: string) => {
+    // TODO remove this once we consolidate double-click logic and handle
+    // ourselves for all event types together
+    if (type === "touch") {
+      return true;
+    }
+    if (this.lastCompletedCanvasClicks.length === 0) {
+      return true;
+    }
+
+    if (this.lastCompletedCanvasClicks.length < 2) {
+      return false;
+    }
+
+    const [firstClick, secondClick] = this.lastCompletedCanvasClicks;
+
+    return (
+      pointDistance(
+        pointFrom(firstClick.x, firstClick.y),
+        pointFrom(secondClick.x, secondClick.y),
+      ) <= DOUBLE_TAP_POSITION_THRESHOLD
+    );
+  };
+
   private handleCanvasDoubleClick = (
-    event: React.MouseEvent<HTMLCanvasElement>,
+    event: Pick<
+      React.MouseEvent<HTMLCanvasElement>,
+      | "type"
+      | "clientX"
+      | "clientY"
+      | "altKey"
+      | "ctrlKey"
+      | "metaKey"
+      | "shiftKey"
+    >,
   ) => {
+    if (
+      this.state.editingTextElement ||
+      !this.shouldHandleBrowserCanvasDoubleClick(event.type)
+    ) {
+      return;
+    }
     // case: double-clicking with arrow/line tool selected would both create
     // text and enter multiElement mode
     if (this.state.multiElement) {
@@ -6295,6 +6550,21 @@ class App extends React.Component<AppProps, AppState> {
     }
   };
 
+  private handleCanvasClick = (event: React.MouseEvent<HTMLCanvasElement>) => {
+    if (event.button !== POINTER_BUTTON.MAIN) {
+      this.lastCompletedCanvasClicks = [];
+      return;
+    }
+
+    this.lastCompletedCanvasClicks = [
+      ...this.lastCompletedCanvasClicks.slice(-1),
+      {
+        x: event.clientX,
+        y: event.clientY,
+      },
+    ];
+  };
+
   private getElementLinkAtPosition = (
     scenePointer: Readonly<{ x: number; y: number }>,
     hitElementMightBeLocked: NonDeletedExcalidrawElement | null,
@@ -6725,27 +6995,23 @@ class App extends React.Component<AppProps, AppState> {
           },
           { informMutation: false, isDragging: false },
         );
+        const newLastIdx = multiElement.points.length - 1;
         this.setState({
           selectedLinearElement: {
             ...selectedLinearElement,
-            selectedPointsIndices:
+            selectedPointsIndices: selectedLinearElement.selectedPointsIndices
-              selectedLinearElement.selectedPointsIndices?.includes(
+              ? [
-                multiElement.points.length,
+                  ...new Set(
-              )
+                    selectedLinearElement.selectedPointsIndices.map((idx) =>
-                ? [
+                      Math.min(idx, newLastIdx),
-                    ...selectedLinearElement.selectedPointsIndices.filter(
-                      (idx) =>
-                        idx !== multiElement.points.length &&
-                        idx !== multiElement.points.length - 1,
                     ),
-                    multiElement.points.length - 1,
+                  ),
-                  ]
+                ]
-                : selectedLinearElement.selectedPointsIndices,
+              : selectedLinearElement.selectedPointsIndices,
-            lastCommittedPoint:
+            lastCommittedPoint: multiElement.points[newLastIdx],
-              multiElement.points[multiElement.points.length - 1],
             initialState: {
               ...selectedLinearElement.initialState,
-              lastClickedPoint: multiElement.points.length - 1,
+              lastClickedPoint: newLastIdx,
             },
           },
         });
@@ -6831,6 +7097,12 @@ class App extends React.Component<AppProps, AppState> {
     const elements = this.scene.getNonDeletedElements();
 
     const selectedElements = this.scene.getSelectedElements(this.state);
+
+    if (this.isHittingTextAutoResizeHandle(selectedElements, scenePointer)) {
+      setCursor(this.interactiveCanvas, CURSOR_TYPE.POINTER);
+      return;
+    }
+
     if (
       selectedElements.length === 1 &&
       !isOverScrollBar &&
@@ -6975,7 +7247,9 @@ class App extends React.Component<AppProps, AppState> {
         setCursor(this.interactiveCanvas, CURSOR_TYPE.AUTO);
       } else if (
         // if using cmd/ctrl, we're not dragging
-        !event[KEYS.CTRL_OR_CMD]
+        !event[KEYS.CTRL_OR_CMD] &&
+        // editing text -> don't show move cursor when hovering over its bbox
+        hitElement?.id !== this.state.editingTextElement?.id
       ) {
         if (
           (hitElement ||
@@ -7196,6 +7470,8 @@ class App extends React.Component<AppProps, AppState> {
   private handleCanvasPointerDown = (
     event: React.PointerEvent<HTMLElement>,
   ) => {
+    const selectedElements = this.scene.getSelectedElements(this.state);
+
     // If Ctrl is not held, ensure isBindingEnabled reflects the user preference.
     if (!event.ctrlKey) {
       const preferenceEnabled = this.state.bindingPreference === "enabled";
@@ -7419,6 +7695,15 @@ class App extends React.Component<AppProps, AppState> {
       selectedElementsAreBeingDragged: false,
     });
 
+    if (
+      this.handleTextAutoResizeHandlePointerDown(
+        selectedElements,
+        pointerDownState.origin,
+      )
+    ) {
+      return;
+    }
+
     if (this.handleDraggingScrollBar(event, pointerDownState)) {
       return;
     }
@@ -7644,6 +7929,10 @@ class App extends React.Component<AppProps, AppState> {
     }
 
     this.removePointer(event);
+    this.lastPointerUpIsDoubleClick = this.isDoubleClick(
+      this.lastPointerUpEvent,
+      event,
+    );
     this.lastPointerUpEvent = event;
 
     if (!event.ctrlKey) {
@@ -8480,6 +8769,7 @@ class App extends React.Component<AppProps, AppState> {
       insertAtParentCenter: !event.altKey,
       container,
       autoEdit: false,
+      initialCaretSceneCoords: { x: sceneX, y: sceneY },
     });
 
     resetCursor(this.interactiveCanvas);
@@ -10965,6 +11255,35 @@ class App extends React.Component<AppProps, AppState> {
         return;
       }
 
+      const selectedTextEditingContainer =
+        this.getSelectedTextEditingContainerAtPosition(hitElement, sceneCoords);
+
+      if (
+        activeTool.type === this.state.preferredSelectionTool.type &&
+        !this.state.editingTextElement &&
+        !pointerDownState.drag.hasOccurred &&
+        !pointerDownState.hit.wasAddedToSelection &&
+        !childEvent.shiftKey &&
+        !childEvent[KEYS.CTRL_OR_CMD] &&
+        !childEvent.altKey &&
+        childEvent.pointerType !== "touch" &&
+        hitElement &&
+        ((isTextElement(hitElement) &&
+          this.state.selectedElementIds[hitElement.id] &&
+          this.scene.getSelectedElements(this.state).length === 1) ||
+          selectedTextEditingContainer)
+      ) {
+        this.startTextEditing({
+          sceneX: sceneCoords.x,
+          sceneY: sceneCoords.y,
+          container: selectedTextEditingContainer,
+          initialCaretSceneCoords: this.lastPointerUpIsDoubleClick
+            ? undefined
+            : sceneCoords,
+        });
+        return;
+      }
+
       if (!activeTool.locked && activeTool.type !== "freedraw" && newElement) {
         this.setState((prevState) => ({
           selectedElementIds: makeNextSelectedElementIds(

packages/excalidraw/components/FontPicker/FontPickerList.tsx

@@ -46,6 +46,7 @@ import {
 import { fontPickerKeyHandler } from "./keyboardNavHandlers";
 
 import type { JSX } from "react";
+import type { ExcalidrawFontFace } from "../../fonts/ExcalidrawFontFace";
 
 export interface FontDescriptor {
   value: number;
@@ -86,6 +87,15 @@ const getFontFamilyIcon = (fontFamily: FontFamilyValues): JSX.Element => {
   }
 };
 
+const getFontFamilyLabel = (
+  fontFamily: FontFamilyValues,
+  fontFaces: ExcalidrawFontFace[],
+) =>
+  // prefer our config as the browser resolved names may be wrapped in quotes and such
+  Object.entries(FONT_FAMILY).find(([, id]) => id === fontFamily)?.[0] ??
+  fontFaces[0]?.fontFace?.family ??
+  "Unknown";
+
 export const FontPickerList = React.memo(
   ({
     selectedFontFamily,
@@ -114,7 +124,7 @@ export const FontPickerList = React.memo(
             const fontDescriptor = {
               value: familyId,
               icon: getFontFamilyIcon(familyId),
-              text: fontFaces[0]?.fontFace?.family ?? "Unknown",
+              text: getFontFamilyLabel(familyId, fontFaces),
             };
 
             if (metadata.deprecated) {

packages/excalidraw/components/IconPicker.scss

@@ -6,14 +6,20 @@
     padding: 0.5rem;
     background: var(--popup-bg-color);
     border: 0 solid color.adjust(#fff, $alpha: -0.75);
-    box-shadow: var(--shadow-island);
+    box-shadow: var(--shadow-island-stronger);
     border-radius: 4px;
-    position: absolute;
     :root[dir="rtl"] & {
       padding: 0.4rem;
     }
   }
 
+  .picker-sections,
+  .picker-section {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+
   .picker-container button,
   .picker button {
     position: relative;
@@ -62,7 +68,13 @@
 
   .picker-collapsible {
     font-size: 0.75rem;
-    padding: 0.5rem 0;
+    padding: 0;
+    color: var(--text-primary-color);
+  }
+
+  .picker-section-label {
+    font-size: 0.75rem;
+    color: var(--text-primary-color);
   }
 
   .picker-keybinding {

packages/excalidraw/components/IconPicker.tsx

@@ -1,6 +1,6 @@
 import { Popover } from "radix-ui";
 import clsx from "clsx";
-import React, { useEffect } from "react";
+import React, { useEffect, useMemo } from "react";
 
 import { isArrowKey, KEYS } from "@excalidraw/common";
 
@@ -8,13 +8,15 @@ import { atom, useAtom } from "../editor-jotai";
 import { getLanguage, t } from "../i18n";
 
 import Collapsible from "./Stats/Collapsible";
-import { useEditorInterface, useExcalidrawContainer } from "./App";
+import { useExcalidrawContainer } from "./App";
 
 import "./IconPicker.scss";
 
 import type { JSX } from "react";
 
 const moreOptionsAtom = atom(false);
+const PICKER_COLUMNS = 4;
+const DEFAULT_SECTION_NAME = "default";
 
 type Option<T> = {
   value: T;
@@ -23,28 +25,73 @@ type Option<T> = {
   keyBinding: string | null;
 };
 
+type PickerSection<T> = {
+  name: string;
+  options: readonly Option<T>[];
+};
+
+const flattenOptions = <T,>(sections: readonly PickerSection<T>[]) =>
+  sections.flatMap((section) => section.options);
+
+const findOption = <T,>(
+  sections: readonly PickerSection<T>[],
+  predicate: (option: Option<T>) => boolean,
+) => {
+  for (const section of sections) {
+    const option = section.options.find(predicate);
+    if (option) {
+      return option;
+    }
+  }
+
+  return null;
+};
+
+const hasOption = <T,>(
+  sections: readonly PickerSection<T>[],
+  predicate: (option: Option<T>) => boolean,
+) => sections.some((section) => section.options.some(predicate));
+
+const getNavigationRows = <T,>(sections: readonly PickerSection<T>[]) =>
+  sections.flatMap((section) =>
+    Array.from(
+      { length: Math.ceil(section.options.length / PICKER_COLUMNS) },
+      (_, index) =>
+        section.options.slice(
+          index * PICKER_COLUMNS,
+          index * PICKER_COLUMNS + PICKER_COLUMNS,
+        ),
+    ),
+  );
+
 function Picker<T>({
-  options,
+  visibleSections,
+  hiddenSections = [],
   value,
   label,
   onChange,
   onClose,
-  numberOfOptionsToAlwaysShow = options.length,
 }: {
   label: string;
   value: T;
-  options: readonly Option<T>[];
+  visibleSections: readonly PickerSection<T>[];
+  hiddenSections?: readonly PickerSection<T>[];
   onChange: (value: T) => void;
   onClose: () => void;
-  numberOfOptionsToAlwaysShow?: number;
 }) {
-  const editorInterface = useEditorInterface();
   const { container } = useExcalidrawContainer();
+  const [showMoreOptions, setShowMoreOptions] = useAtom(moreOptionsAtom);
+  const allSections = [...visibleSections, ...hiddenSections];
+  const allOptions = flattenOptions(allSections);
+  const navigationRows = getNavigationRows([
+    ...visibleSections,
+    ...(showMoreOptions ? hiddenSections : []),
+  ]);
 
   const handleKeyDown = (event: React.KeyboardEvent) => {
-    const pressedOption = options.find(
+    const pressedOption = allOptions.find(
       (option) => option.keyBinding === event.key.toLowerCase(),
-    )!;
+    );
 
     if (!(event.metaKey || event.altKey || event.ctrlKey) && pressedOption) {
       // Keybinding navigation
@@ -52,17 +99,17 @@ function Picker<T>({
 
       event.preventDefault();
     } else if (event.key === KEYS.TAB) {
-      const index = options.findIndex((option) => option.value === value);
+      const index = allOptions.findIndex((option) => option.value === value);
       const nextIndex = event.shiftKey
-        ? (options.length + index - 1) % options.length
+        ? (allOptions.length + index - 1) % allOptions.length
-        : (index + 1) % options.length;
+        : (index + 1) % allOptions.length;
-      onChange(options[nextIndex].value);
+      onChange(allOptions[nextIndex].value);
     } else if (isArrowKey(event.key)) {
       // Arrow navigation
       const isRTL = getLanguage().rtl;
-      const index = options.findIndex((option) => option.value === value);
+      const index = allOptions.findIndex((option) => option.value === value);
       if (index !== -1) {
-        const length = options.length;
+        const length = allOptions.length;
         let nextIndex = index;
 
         switch (event.key) {
@@ -76,18 +123,60 @@ function Picker<T>({
             break;
           // Go the next row
           case KEYS.ARROW_DOWN: {
-            nextIndex = (index + (numberOfOptionsToAlwaysShow ?? 1)) % length;
+            const currentRowIndex = navigationRows.findIndex((row) =>
+              row.some((option) => option.value === value),
+            );
+            const currentRow = navigationRows[currentRowIndex];
+
+            if (currentRowIndex !== -1 && currentRow) {
+              const column = currentRow.findIndex(
+                (option) => option.value === value,
+              );
+              const nextRow =
+                navigationRows[(currentRowIndex + 1) % navigationRows.length];
+              const nextOption =
+                nextRow[Math.min(column, nextRow.length - 1)] ??
+                allOptions[index];
+
+              onChange(nextOption.value);
+              event.preventDefault();
+              event.nativeEvent.stopImmediatePropagation();
+              event.stopPropagation();
+              return;
+            }
             break;
           }
           // Go the previous row
           case KEYS.ARROW_UP: {
-            nextIndex =
+            const currentRowIndex = navigationRows.findIndex((row) =>
-              (length + index - (numberOfOptionsToAlwaysShow ?? 1)) % length;
+              row.some((option) => option.value === value),
+            );
+            const currentRow = navigationRows[currentRowIndex];
+
+            if (currentRowIndex !== -1 && currentRow) {
+              const column = currentRow.findIndex(
+                (option) => option.value === value,
+              );
+              const previousRow =
+                navigationRows[
+                  (navigationRows.length + currentRowIndex - 1) %
+                    navigationRows.length
+                ];
+              const previousOption =
+                previousRow[Math.min(column, previousRow.length - 1)] ??
+                allOptions[index];
+
+              onChange(previousOption.value);
+              event.preventDefault();
+              event.nativeEvent.stopImmediatePropagation();
+              event.stopPropagation();
+              return;
+            }
             break;
           }
         }
 
-        onChange(options[nextIndex].value);
+        onChange(allOptions[nextIndex].value);
       }
       event.preventDefault();
     } else if (event.key === KEYS.ESCAPE || event.key === KEYS.ENTER) {
@@ -99,38 +188,29 @@ function Picker<T>({
     event.stopPropagation();
   };
 
-  const [showMoreOptions, setShowMoreOptions] = useAtom(moreOptionsAtom);
-
-  const alwaysVisibleOptions = React.useMemo(
-    () => options.slice(0, numberOfOptionsToAlwaysShow),
-    [options, numberOfOptionsToAlwaysShow],
-  );
-  const moreOptions = React.useMemo(
-    () => options.slice(numberOfOptionsToAlwaysShow),
-    [options, numberOfOptionsToAlwaysShow],
-  );
-
   useEffect(() => {
-    if (!alwaysVisibleOptions.some((option) => option.value === value)) {
+    if (hasOption(hiddenSections, (option) => option.value === value)) {
       setShowMoreOptions(true);
     }
-  }, [value, alwaysVisibleOptions, setShowMoreOptions]);
+  }, [value, hiddenSections, setShowMoreOptions]);
 
-  const renderOptions = (options: Option<T>[]) => {
+  const renderOptions = (options: readonly Option<T>[]) => {
     return (
       <div className="picker-content">
-        {options.map((option, i) => (
+        {options.map((option) => (
           <button
             type="button"
             className={clsx("picker-option", {
               active: value === option.value,
             })}
-            onClick={(event) => {
+            onClick={() => {
               onChange(option.value);
             }}
-            title={`${option.text} ${
+            title={
-              option.keyBinding && `— ${option.keyBinding.toUpperCase()}`
+              option.keyBinding
-            }`}
+                ? `${option.text} — ${option.keyBinding.toUpperCase()}`
+                : option.text
+            }
             aria-label={option.text || "none"}
             aria-keyshortcuts={option.keyBinding || undefined}
             key={option.text}
@@ -153,26 +233,38 @@ function Picker<T>({
     );
   };
 
-  const isMobile = editorInterface.formFactor === "phone";
+  const renderSections = (sections: readonly PickerSection<T>[]) =>
+    sections.map((section, index) =>
+      section.name === DEFAULT_SECTION_NAME ? (
+        <React.Fragment key={`${section.name}-${index}`}>
+          {renderOptions(section.options)}
+        </React.Fragment>
+      ) : (
+        <div className="picker-section" key={`${section.name}-${index}`}>
+          <div className="picker-section-label">{section.name}</div>
+          {renderOptions(section.options)}
+        </div>
+      ),
+    );
 
   return (
     <Popover.Content
-      side={isMobile ? "right" : "bottom"}
+      className="picker"
+      role="dialog"
+      aria-modal="true"
+      aria-label={label}
+      side={"bottom"}
       align="start"
-      sideOffset={isMobile ? 8 : 12}
+      sideOffset={12}
+      alignOffset={12}
       style={{ zIndex: "var(--zIndex-ui-styles-popup)" }}
       onKeyDown={handleKeyDown}
       collisionBoundary={container ?? undefined}
     >
-      <div
+      <div className="picker-sections">
-        className={`picker`}
+        {renderSections(visibleSections)}
-        role="dialog"
-        aria-modal="true"
-        aria-label={label}
-      >
-        {renderOptions(alwaysVisibleOptions)}
 
-        {moreOptions.length > 0 && (
+        {hiddenSections.length > 0 && (
           <Collapsible
             label={t("labels.more_options")}
             open={showMoreOptions}
@@ -181,7 +273,9 @@ function Picker<T>({
             }}
             className="picker-collapsible"
           >
-            {renderOptions(moreOptions)}
+            <div className="picker-sections">
+              {renderSections(hiddenSections)}
+            </div>
           </Collapsible>
         )}
       </div>
@@ -192,49 +286,45 @@ function Picker<T>({
 export function IconPicker<T>({
   value,
   label,
-  options,
+  visibleSections,
+  hiddenSections,
   onChange,
-  group = "",
-  numberOfOptionsToAlwaysShow,
 }: {
   label: string;
   value: T;
-  options: readonly {
+  visibleSections: readonly PickerSection<T>[];
-    value: T;
+  hiddenSections?: readonly PickerSection<T>[];
-    text: string;
-    icon: JSX.Element;
-    keyBinding: string | null;
-  }[];
   onChange: (value: T) => void;
-  numberOfOptionsToAlwaysShow?: number;
-  group?: string;
 }) {
   const [isActive, setActive] = React.useState(false);
-  const rPickerButton = React.useRef<any>(null);
+  const selectedOption = useMemo(
+    () =>
+      findOption(visibleSections, (option) => option.value === value) ??
+      findOption(hiddenSections ?? [], (option) => option.value === value),
+    [visibleSections, hiddenSections, value],
+  );
 
   return (
     <div>
       <Popover.Root open={isActive} onOpenChange={(open) => setActive(open)}>
         <Popover.Trigger
-          name={group}
           type="button"
           aria-label={label}
           onClick={() => setActive(!isActive)}
-          ref={rPickerButton}
           className={isActive ? "active" : ""}
         >
-          {options.find((option) => option.value === value)?.icon}
+          {selectedOption?.icon}
         </Popover.Trigger>
         {isActive && (
           <Picker
-            options={options}
+            visibleSections={visibleSections}
+            hiddenSections={hiddenSections}
             value={value}
             label={label}
             onChange={onChange}
             onClose={() => {
               setActive(false);
             }}
-            numberOfOptionsToAlwaysShow={numberOfOptionsToAlwaysShow}
           />
         )}
       </Popover.Root>

packages/excalidraw/components/Range.tsx

@@ -1,74 +1,78 @@
 import React, { useEffect } from "react";
 
-import { t } from "../i18n";
-
 import "./Range.scss";
 
-import type { AppClassProperties } from "../types";
-
 export type RangeProps = {
-  updateData: (value: number) => void;
+  label: React.ReactNode;
-  app: AppClassProperties;
+  value: number;
+  onChange: (value: number) => void;
+  min?: number;
+  max?: number;
+  step?: number;
+  minLabel?: React.ReactNode;
+  hasCommonValue?: boolean;
   testId?: string;
 };
 
-export const Range = ({ updateData, app, testId }: RangeProps) => {
+export const Range = ({
+  label,
+  value,
+  onChange,
+  min = 0,
+  max = 100,
+  step = 10,
+  minLabel = min,
+  hasCommonValue = true,
+  testId,
+}: RangeProps) => {
   const rangeRef = React.useRef<HTMLInputElement>(null);
   const valueRef = React.useRef<HTMLDivElement>(null);
-  const selectedElements = app.scene.getSelectedElements(app.state);
-  let hasCommonOpacity = true;
-  const firstElement = selectedElements.at(0);
-  const leastCommonOpacity = selectedElements.reduce((acc, element) => {
-    if (acc != null && acc !== element.opacity) {
-      hasCommonOpacity = false;
-    }
-    if (acc == null || acc > element.opacity) {
-      return element.opacity;
-    }
-    return acc;
-  }, firstElement?.opacity ?? null);
-
-  const value = leastCommonOpacity ?? app.state.currentItemOpacity;
 
   useEffect(() => {
     if (rangeRef.current && valueRef.current) {
       const rangeElement = rangeRef.current;
       const valueElement = valueRef.current;
       const inputWidth = rangeElement.offsetWidth;
-      const thumbWidth = 15; // 15 is the width of the thumb
+      const thumbWidth =
+        parseFloat(
+          getComputedStyle(rangeElement).getPropertyValue(
+            "--slider-thumb-size",
+          ),
+        ) || 16;
+      const progress = ((value - min) / (max - min || 1)) * 100;
       const position =
-        (value / 100) * (inputWidth - thumbWidth) + thumbWidth / 2;
+        (progress / 100) * (inputWidth - thumbWidth) + thumbWidth / 2;
       valueElement.style.left = `${position}px`;
-      rangeElement.style.background = `linear-gradient(to right, var(--color-slider-track) 0%, var(--color-slider-track) ${value}%, var(--button-bg) ${value}%, var(--button-bg) 100%)`;
+      rangeElement.style.background = `linear-gradient(to right, var(--color-slider-track) 0%, var(--color-slider-track) ${progress}%, var(--button-bg) ${progress}%, var(--button-bg) 100%)`;
     }
-  }, [value]);
+  }, [max, min, value]);
 
   return (
     <label className="control-label">
-      {t("labels.opacity")}
+      {label}
       <div className="range-wrapper">
         <input
           style={{
-            ["--color-slider-track" as string]: hasCommonOpacity
+            ["--color-slider-track" as string]: hasCommonValue
               ? undefined
               : "var(--button-bg)",
           }}
           ref={rangeRef}
           type="range"
-          min="0"
+          min={min}
-          max="100"
+          max={max}
-          step="10"
+          step={step}
           onChange={(event) => {
-            updateData(+event.target.value);
+            onChange(+event.target.value);
           }}
           value={value}
           className="range-input"
           data-testid={testId}
         />
         <div className="value-bubble" ref={valueRef}>
-          {value !== 0 ? value : null}
+          {value !== min ? value : null}
         </div>
-        <div className="zero-label">0</div>
+        <div className="zero-label">{minLabel}</div>
       </div>
     </label>
   );

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

@@ -361,12 +361,10 @@ describe("stats for a non-generic element", () => {
     mouse.clickAt(20, 30);
     const editor = await getTextEditor();
     updateTextEditor(editor, "Hello!");
-    act(() => {
+    Keyboard.exitTextEditor(editor);
-      editor.blur();
-    });
 
     const text = h.elements[0] as ExcalidrawTextElement;
-    mouse.clickOn(text);
+    API.setSelectedElements([text]);
 
     elementStats = stats?.querySelector("#elementStats");
 

packages/excalidraw/components/TTDDialog/MermaidToExcalidraw.tsx

@@ -236,15 +236,40 @@ const MermaidToExcalidraw = ({
         <Trans
           i18nKey="mermaid.description"
           flowchartLink={(el) => (
-            <a href="https://mermaid.js.org/syntax/flowchart.html">{el}</a>
+            <a
+              href="https://mermaid.js.org/syntax/flowchart.html"
+              target="_blank"
+              rel="noreferrer"
+            >
+              {el}
+            </a>
           )}
           sequenceLink={(el) => (
-            <a href="https://mermaid.js.org/syntax/sequenceDiagram.html">
+            <a
+              href="https://mermaid.js.org/syntax/sequenceDiagram.html"
+              target="_blank"
+              rel="noreferrer"
+            >
               {el}
             </a>
           )}
           classLink={(el) => (
-            <a href="https://mermaid.js.org/syntax/classDiagram.html">{el}</a>
+            <a
+              href="https://mermaid.js.org/syntax/classDiagram.html"
+              target="_blank"
+              rel="noreferrer"
+            >
+              {el}
+            </a>
+          )}
+          erdLink={(el) => (
+            <a
+              href="https://mermaid.js.org/syntax/entityRelationshipDiagram.html"
+              target="_blank"
+              rel="noreferrer"
+            >
+              {el}
+            </a>
           )}
         />
       </div>

packages/excalidraw/components/TTDDialog/common.ts

@@ -94,7 +94,7 @@ export const convertMermaidToExcalidraw = async ({
       }
     }
 
-    const { elements, files } = ret;
+    const { elements, files = {} } = ret;
     setError(null);
 
     data.current = {

packages/excalidraw/components/canvases/InteractiveCanvas.tsx

@@ -54,6 +54,7 @@ type InteractiveCanvasProps = {
     DOMAttributes<HTMLCanvasElement | HTMLDivElement>["onContextMenu"],
     undefined
   >;
+  onClick: Exclude<DOMAttributes<HTMLCanvasElement>["onClick"], undefined>;
   onPointerMove: Exclude<
     DOMAttributes<HTMLCanvasElement>["onPointerMove"],
     undefined
@@ -213,6 +214,7 @@ const InteractiveCanvas = (props: InteractiveCanvasProps) => {
       height={props.appState.height * props.scale}
       ref={props.handleCanvasRef}
       onContextMenu={props.onContextMenu}
+      onClick={props.onClick}
       onPointerMove={props.onPointerMove}
       onPointerUp={props.onPointerUp}
       onPointerCancel={props.onPointerCancel}

packages/excalidraw/components/icons.tsx

@@ -69,6 +69,11 @@ const modifiedTablerIconProps: Opts = {
   strokeLinejoin: "round",
 } as const;
 
+const arrowheadPreviewIconProps: Opts = {
+  width: 40,
+  height: 20,
+} as const;
+
 // -----------------------------------------------------------------------------
 
 // tabler-icons: present
@@ -1291,16 +1296,17 @@ export const ArrowheadNoneIcon = React.memo(
   ({ flip = false }: { flip?: boolean }) =>
     createIcon(
       <g
-        transform={flip ? "translate(24, 0) scale(-1, 1)" : ""}
+        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
         stroke="currentColor"
         opacity={0.3}
         strokeWidth={2}
+        fill="none"
+        strokeLinecap="round"
       >
-        <path d="M12 12l-9 0" />
+        <path d="M7,11 H19" />
-        <path d="M21 9l-6 6" />
+        <path d="M25,6 L33,16 M33,6 L25,16" />
-        <path d="M21 15l-6 -6" />
       </g>,
-      tablerIconProps,
+      arrowheadPreviewIconProps,
     ),
 );
 
@@ -1312,57 +1318,12 @@ export const ArrowheadArrowIcon = React.memo(
         stroke="currentColor"
         strokeWidth={2}
         fill="none"
+        strokeLinecap="round"
+        strokeLinejoin="round"
       >
-        <path d="M34 10H6M34 10L27 5M34 10L27 15" />
+        <path d="M7,11 H33 M23,5 L33,11 L23,17" />
-        <path d="M27.5 5L34.5 10L27.5 15" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
-    ),
-);
-
-export const ArrowheadCircleIcon = React.memo(
-  ({ flip = false }: { flip?: boolean }) =>
-    createIcon(
-      <g
-        stroke="currentColor"
-        fill="currentColor"
-        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
-      >
-        <path d="M32 10L6 10" strokeWidth={2} />
-        <circle r="4" transform="matrix(-1 0 0 1 30 10)" />
-      </g>,
-      { width: 40, height: 20 },
-    ),
-);
-
-export const ArrowheadCircleOutlineIcon = React.memo(
-  ({ flip = false }: { flip?: boolean }) =>
-    createIcon(
-      <g
-        stroke="currentColor"
-        fill="none"
-        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
-        strokeWidth={2}
-      >
-        <path d="M26 10L6 10" />
-        <circle r="4" transform="matrix(-1 0 0 1 30 10)" />
-      </g>,
-      { width: 40, height: 20 },
-    ),
-);
-
-export const ArrowheadBarIcon = React.memo(
-  ({ flip = false }: { flip?: boolean }) =>
-    createIcon(
-      <g transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}>
-        <path
-          d="M34 10H5.99996M34 10L34 5M34 10L34 15"
-          stroke="currentColor"
-          strokeWidth={2}
-          fill="none"
-        />
-      </g>,
-      { width: 40, height: 20 },
     ),
 );
 
@@ -1373,11 +1334,12 @@ export const ArrowheadTriangleIcon = React.memo(
         stroke="currentColor"
         fill="currentColor"
         transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
+        strokeLinejoin="round"
       >
-        <path d="M32 10L6 10" strokeWidth={2} />
+        <path d="M7,11 H23" strokeWidth={2} strokeLinecap="round" />
-        <path d="M27.5 5.5L34.5 10L27.5 14.5L27.5 5.5" />
+        <path d="M23,5 L35,11 L23,17 Z" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
     ),
 );
 
@@ -1390,12 +1352,43 @@ export const ArrowheadTriangleOutlineIcon = React.memo(
         transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
         strokeWidth={2}
         strokeLinejoin="round"
+        strokeLinecap="round"
       >
-        <path d="M6,9.5H27" />
+        <path d="M7,11 H23" />
-        <path d="M27,5L34,10L27,14Z" fill="none" />
+        <path d="M23,5 L35,11 L23,17 Z" />
       </g>,
+      arrowheadPreviewIconProps,
+    ),
+);
 
-      { width: 40, height: 20 },
+export const ArrowheadCircleIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        stroke="currentColor"
+        fill="currentColor"
+        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
+      >
+        <path d="M7,11 H25" strokeWidth={2} strokeLinecap="round" />
+        <circle cx="29" cy="11" r="4" />
+      </g>,
+      arrowheadPreviewIconProps,
+    ),
+);
+
+export const ArrowheadCircleOutlineIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        stroke="currentColor"
+        fill="none"
+        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
+        strokeWidth={2}
+      >
+        <path d="M7,11 H25" strokeLinecap="round" />
+        <circle cx="29" cy="11" r="4" />
+      </g>,
+      arrowheadPreviewIconProps,
     ),
 );
 
@@ -1407,12 +1400,11 @@ export const ArrowheadDiamondIcon = React.memo(
         fill="currentColor"
         transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
         strokeLinejoin="round"
-        strokeWidth={2}
       >
-        <path d="M6,9.5H20" />
+        <path d="M7,11 H21" strokeWidth={2} strokeLinecap="round" />
-        <path d="M27,5L34,10L27,14L20,9.5Z" />
+        <path d="M21,11 L28,5 L35,11 L28,17 Z" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
     ),
 );
 
@@ -1425,15 +1417,32 @@ export const ArrowheadDiamondOutlineIcon = React.memo(
         transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
         strokeLinejoin="round"
         strokeWidth={2}
+        strokeLinecap="round"
       >
-        <path d="M6,9.5H20" />
+        <path d="M7,11 H21" />
-        <path d="M27,5L34,10L27,14L20,9.5Z" />
+        <path d="M21,11 L28,5 L35,11 L28,17 Z" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
     ),
 );
 
-export const ArrowheadCrowfootIcon = React.memo(
+export const ArrowheadBarIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        transform={flip ? "translate(40, 0) scale(-1, 1)" : ""}
+        stroke="currentColor"
+        strokeWidth={2}
+        fill="none"
+        strokeLinecap="round"
+      >
+        <path d="M11,11 H31 M31,5 V17" />
+      </g>,
+      arrowheadPreviewIconProps,
+    ),
+);
+
+export const ArrowheadCardinalityOneIcon = React.memo(
   ({ flip = false }: { flip?: boolean }) =>
     createIcon(
       <g
@@ -1443,13 +1452,13 @@ export const ArrowheadCrowfootIcon = React.memo(
         strokeLinejoin="round"
         strokeWidth={2}
       >
-        <path d="M34,10 H6 M15,10 L7,5 M15,10 L7,15" />
+        <path d="M35,11 H7 M15,5 V17" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
     ),
 );
 
-export const ArrowheadCrowfootOneIcon = React.memo(
+export const ArrowheadCardinalityManyIcon = React.memo(
   ({ flip = false }: { flip?: boolean }) =>
     createIcon(
       <g
@@ -1459,13 +1468,13 @@ export const ArrowheadCrowfootOneIcon = React.memo(
         strokeLinejoin="round"
         strokeWidth={2}
       >
-        <path d="M34,10 H6 M15,10 L15,15 L15,5" />
+        <path d="M35,11 H7 M15,11 L7,5 M15,11 L7,17" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
     ),
 );
 
-export const ArrowheadCrowfootOneOrManyIcon = React.memo(
+export const ArrowheadCardinalityOneOrManyIcon = React.memo(
   ({ flip = false }: { flip?: boolean }) =>
     createIcon(
       <g
@@ -1475,9 +1484,59 @@ export const ArrowheadCrowfootOneOrManyIcon = React.memo(
         strokeLinejoin="round"
         strokeWidth={2}
       >
-        <path d="M34,10 H6 M15,10 L15,16 L15,4 M15,10 L7,5 M15,10 L7,15" />
+        <path d="M35,11 H7 M23,5 V17 M15,11 L7,5 M15,11 L7,17" />
       </g>,
-      { width: 40, height: 20 },
+      arrowheadPreviewIconProps,
+    ),
+);
+
+export const ArrowheadCardinalityExactlyOneIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        stroke="currentColor"
+        fill="none"
+        transform={flip ? "" : "translate(40, 0) scale(-1, 1)"}
+        strokeLinejoin="round"
+        strokeWidth={2}
+      >
+        <path d="M35,11 H7 M15,5 V17 M7,5 V17" />
+      </g>,
+      arrowheadPreviewIconProps,
+    ),
+);
+
+export const ArrowheadCardinalityZeroOrOneIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        stroke="currentColor"
+        fill="none"
+        transform={flip ? "" : "translate(40, 0) scale(-1, 1)"}
+        strokeLinejoin="round"
+        strokeWidth={2}
+      >
+        <path d="M35,11 H19 M11,11 H7 M7,5 V17" />
+        <circle cx="15" cy="11" r="4" />
+      </g>,
+      arrowheadPreviewIconProps,
+    ),
+);
+
+export const ArrowheadCardinalityZeroOrManyIcon = React.memo(
+  ({ flip = false }: { flip?: boolean }) =>
+    createIcon(
+      <g
+        stroke="currentColor"
+        fill="none"
+        transform={flip ? "" : "translate(40, 0) scale(-1, 1)"}
+        strokeLinejoin="round"
+        strokeWidth={2}
+      >
+        <path d="M35,11 H27 M19,11 H7 M15,11 L7,5 M15,11 L7,17" />
+        <circle cx="23" cy="11" r="4" />
+      </g>,
+      arrowheadPreviewIconProps,
     ),
 );
 

packages/excalidraw/css/theme.scss

@@ -34,9 +34,10 @@
   --popup-text-color: #000;
   --popup-text-inverted-color: #fff;
   --select-highlight-color: #{$color-blue-5};
-  --shadow-island: 0px 0px 0.9310142993927002px 0px rgba(0, 0, 0, 0.17),
+  --shadow-island: 0px 0px 1px 0px rgba(0, 0, 0, 0.17),
-    0px 0px 3.1270833015441895px 0px rgba(0, 0, 0, 0.08),
+    0px 0px 3px 0px rgba(0, 0, 0, 0.08), 0px 7px 14px 0px rgba(0, 0, 0, 0.05);
-    0px 7px 14px 0px rgba(0, 0, 0, 0.05);
+  --shadow-island-stronger: 0px 0px 1px 0px rgba(0, 0, 0, 0.17),
+    0px 0px 3px 0px rgba(0, 0, 0, 0.08), 0px 7px 14px 0px rgb(0 0 0 / 18%);
 
   --button-hover-bg: var(--color-surface-high);
   --button-active-bg: var(--color-surface-high);
@@ -210,9 +211,6 @@
     --popup-text-color: #{$color-gray-4};
     --popup-text-inverted-color: #2c2c2c;
     --select-highlight-color: #{$color-blue-4};
-    --shadow-island: 0px 0px 0.9310142993927002px 0px rgba(0, 0, 0, 0.17),
-      0px 0px 3.1270833015441895px 0px rgba(0, 0, 0, 0.08),
-      0px 7px 14px 0px rgba(0, 0, 0, 0.05);
 
     --modal-shadow: 0px 100px 80px rgba(0, 0, 0, 0.07),
       0px 41.7776px 33.4221px rgba(0, 0, 0, 0.0503198),

packages/excalidraw/data/resave.ts

@@ -20,10 +20,6 @@ export const resaveAsImageWithScene = async (
 ) => {
   const fileHandleType = getFileHandleType(fileHandle);
 
-  if (Math.random() < 1) {
-    throw new Error("OLALALALA");
-  }
-
   if (!isImageFileHandleType(fileHandleType)) {
     throw new Error(
       "fileHandle should exist and should be of type svg or png when resaving",

packages/excalidraw/data/restore.ts

@@ -22,6 +22,7 @@ import {
 import {
   calculateFixedPointForNonElbowArrowBinding,
   getNonDeletedElements,
+  normalizeArrowhead,
   isPointInElement,
   isValidPolygon,
   projectFixedPointOntoDiagonal,
@@ -250,7 +251,9 @@ const repairBinding = <T extends ExcalidrawArrowElement>(
       };
     }
 
-    console.error(`could not repair binding for element`);
+    console.error(
+      `Could not repair binding for element "${boundElement?.id}" out of (${elementsMap?.size}) elements`,
+    );
   } catch (error) {
     console.error("Error repairing binding:", error);
   }
@@ -426,7 +429,8 @@ export const restoreElement = (
     // @ts-ignore LEGACY type
     // eslint-disable-next-line no-fallthrough
     case "draw":
-      const { startArrowhead = null, endArrowhead = null } = element;
+      const startArrowhead = normalizeArrowhead(element.startArrowhead);
+      const endArrowhead = normalizeArrowhead(element.endArrowhead);
       let x = element.x;
       let y = element.y;
       let points = // migrate old arrow model to new one
@@ -458,7 +462,11 @@ export const restoreElement = (
         ...getSizeFromPoints(points),
       });
     case "arrow": {
-      const { startArrowhead = null, endArrowhead = "arrow" } = element;
+      const startArrowhead = normalizeArrowhead(element.startArrowhead);
+      const endArrowhead =
+        element.endArrowhead === undefined
+          ? "arrow"
+          : normalizeArrowhead(element.endArrowhead);
       const x: number | undefined = element.x;
       const y: number | undefined = element.y;
       const points: readonly LocalPoint[] | undefined = // migrate old arrow model to new one

packages/excalidraw/hooks/useAppStateValue.ts

@@ -6,6 +6,51 @@ import { getDefaultAppState } from "../appState";
 
 import type { AppState } from "../types";
 
+type AppStateSelector =
+  | keyof AppState
+  | (keyof AppState)[]
+  | ((appState: AppState) => unknown);
+
+const getSelectedValue = (appState: AppState, selector: AppStateSelector) => {
+  if (typeof selector === "function") {
+    return selector(appState);
+  }
+  if (Array.isArray(selector)) {
+    return appState;
+  }
+  return appState[selector];
+};
+
+const getLatestValue = (
+  api: ReturnType<typeof useExcalidrawAPI>,
+  selector: AppStateSelector,
+  _internal: boolean,
+) => {
+  if (api?.isDestroyed) {
+    return;
+  }
+
+  let appState = api?.getAppState();
+  if (!appState) {
+    if (!_internal) {
+      return undefined;
+    }
+
+    console.warn(
+      "useAppStateValue: excalidrawAPI not defined yet for internal component while it should always be defined. Are you sure you're rendering inside of <Excalidraw/> component tree?",
+    );
+    // fall back in case there's a bug so we don't break the app
+    // (internal components using this internal useAppStateValue expect
+    //  non-undefined values on init)
+    appState = Object.assign(
+      { width: 0, height: 0, offsetLeft: 0, offsetTop: 0 },
+      getDefaultAppState(),
+    );
+  }
+
+  return getSelectedValue(appState, selector);
+};
+
 /**
  * Subscribes to specific appState changes. The component re-renders
  * only when the specified prop(s) change — not on every appState update.
@@ -19,92 +64,109 @@ import type { AppState } from "../types";
  *  - `(keyof AppState)[]` → whole `AppState`
  *  - selector function → selector's return type `T`
  *
- * Calls the optional callback with the latest value on every change (not called
- * on initial render).
- *
  * If excalidrawAPI is not ready yet (host apps), hook is rerendered with latest
  * value once available.
  */
 export function useAppStateValue<K extends keyof AppState>(
   prop: K,
-  callback?: (value: AppState[K], appState: AppState) => void,
   _internal?: boolean,
 ): AppState[K];
 export function useAppStateValue(
   props: (keyof AppState)[],
-  callback?: (props: AppState, appState: AppState) => void,
   _internal?: boolean,
 ): AppState;
 export function useAppStateValue<T>(
   selector: (appState: AppState) => T,
-  callback?: (value: T, appState: AppState) => void,
   _internal?: boolean,
 ): T;
 export function useAppStateValue(
-  selector:
+  selector: AppStateSelector,
-    | keyof AppState
-    | (keyof AppState)[]
-    | ((appState: AppState) => unknown),
-  callback?: (value: any, appState: AppState) => void,
   _internal: boolean = true,
 ): unknown {
   const api = useExcalidrawAPI();
+  const [, rerender] = useState(0);
 
-  const getLatestValue = () => {
+  const stateRef = useRef<{
-    let appState = api?.getAppState();
+    selector: AppStateSelector;
-    if (!appState) {
+    isInitialized: boolean;
-      if (!_internal) {
+    latestValue: unknown;
-        return undefined;
+  } | null>(null);
-      }
+  if (!stateRef.current) {
-      console.warn(
+    stateRef.current = {
-        "useAppStateValue: excalidrawAPI not defined yet for internal component in which case it should always be defined. Are you sure you're rendering inside of <Excalidraw/> component tree?",
+      selector,
-      );
+      isInitialized: !!api,
-      // fall back in case there's a bug so we don't break the app
+      latestValue: getLatestValue(api, selector, _internal),
-      // (internal components using this internal useAppStateValue expect
+    };
-      //  non-undefined values on init)
+  }
-      appState = Object.assign(
-        { width: 0, height: 0, offsetLeft: 0, offsetTop: 0 },
-        getDefaultAppState(),
-      );
-    }
-    if (typeof selector === "function") {
-      return selector(appState);
-    }
-    if (Array.isArray(selector)) {
-      return appState;
-    }
-    return appState[selector];
-  };
-
-  const [value, setValue] = useState<unknown>(getLatestValue);
-
-  const stateRef = useRef({
-    selector,
-    callback,
-    isInitialized: !!api,
-    latestValue: value,
-  });
   stateRef.current.selector = selector;
-  stateRef.current.callback = callback;
+  if (!stateRef.current.isInitialized && api && !api.isDestroyed) {
-  if (!stateRef.current.isInitialized && api) {
     stateRef.current.isInitialized = true;
-    stateRef.current.latestValue = getLatestValue();
+    stateRef.current.latestValue = getLatestValue(api, selector, _internal);
   }
 
   useEffect(() => {
-    if (!api) {
+    const currentStateRef = stateRef.current;
+    if (!api || api.isDestroyed || !currentStateRef) {
       return;
     }
 
-    return api.onStateChange(
+    return api.onStateChange(currentStateRef.selector, (newValue: any) => {
-      stateRef.current.selector,
+      currentStateRef.latestValue = newValue;
-      (newValue: any, state: AppState) => {
+      rerender((value) => value + 1);
-        stateRef.current.latestValue = newValue;
+    });
-        stateRef.current.callback?.(newValue, state);
-        setValue(newValue);
-      },
-    );
   }, [api]);
 
   return stateRef.current.latestValue;
 }
+
+/**
+ * Subscribes to specific appState changes without causing component rerenders.
+ *
+ * The callback is called on every matching change, but also on initial render
+ * so you can initialize your state.
+ */
+export function useOnAppStateChange<K extends keyof AppState>(
+  prop: K,
+  callback: (value: AppState[K], appState: AppState) => void,
+): undefined;
+export function useOnAppStateChange(
+  props: (keyof AppState)[],
+  callback: (props: AppState, appState: AppState) => void,
+): undefined;
+export function useOnAppStateChange<T>(
+  selector: (appState: AppState) => T,
+  callback: (value: T, appState: AppState) => void,
+): undefined;
+export function useOnAppStateChange(
+  selector: AppStateSelector,
+  callback: (value: any, appState: AppState) => void,
+): undefined {
+  const api = useExcalidrawAPI();
+
+  const stateRef = useRef({
+    selector,
+    callback,
+  });
+  stateRef.current.selector = selector;
+  stateRef.current.callback = callback;
+
+  useEffect(() => {
+    if (!api || api.isDestroyed) {
+      return;
+    }
+
+    stateRef.current.callback(
+      getLatestValue(api, stateRef.current.selector, true),
+      api.getAppState(),
+    );
+
+    return api.onStateChange(
+      stateRef.current.selector,
+      (newValue: any, state: AppState) => {
+        stateRef.current.callback(newValue, state);
+      },
+    );
+  }, [api]);
+
+  return undefined;
+}

packages/excalidraw/index.tsx

@@ -1,4 +1,10 @@
-import React, { useCallback, useContext, useEffect, useState } from "react";
+import React, {
+  useCallback,
+  useContext,
+  useEffect,
+  useRef,
+  useState,
+} from "react";
 
 import { DEFAULT_UI_OPTIONS, isShallowEqual } from "@excalidraw/common";
 
@@ -12,7 +18,10 @@ import LiveCollaborationTrigger from "./components/live-collaboration/LiveCollab
 import MainMenu from "./components/main-menu/MainMenu";
 import WelcomeScreen from "./components/welcome-screen/WelcomeScreen";
 import { defaultLang } from "./i18n";
-import { useAppStateValue as _useAppStateValue } from "./hooks/useAppStateValue";
+import {
+  useAppStateValue as _useAppStateValue,
+  useOnAppStateChange as _useOnAppStateChange,
+} from "./hooks/useAppStateValue";
 import { EditorJotaiProvider, editorJotaiStore } from "./editor-jotai";
 import polyfill from "./polyfill";
 
@@ -31,8 +40,8 @@ polyfill();
 
 /**
  * Stateless provider that allows `useExcalidrawAPI()` (and hooks built
- * on it, such as `useAppStateValue()`) to work outside the <Excalidraw>
+ * on it, such as `useAppStateValue()` and `useOnAppStateChange()`) to work
- * component tree.
+ * outside the <Excalidraw> component tree.
  */
 export const ExcalidrawAPIProvider = ({
   children,
@@ -57,6 +66,7 @@ const ExcalidrawBase = (props: ExcalidrawProps) => {
     initialData,
     onExcalidrawAPI,
     onMount,
+    onUnmount,
     onInitialize,
     isCollaborating = false,
     onPointerUpdate,
@@ -119,12 +129,16 @@ const ExcalidrawBase = (props: ExcalidrawProps) => {
   }
 
   const setExcalidrawAPI = useContext(ExcalidrawAPISetContext);
+
+  const onExcalidrawAPIRef = useRef(onExcalidrawAPI);
+  onExcalidrawAPIRef.current = onExcalidrawAPI;
+
   const handleExcalidrawAPI = useCallback(
-    (api: ExcalidrawImperativeAPI) => {
+    (api: ExcalidrawImperativeAPI | null) => {
       setExcalidrawAPI?.(api);
-      onExcalidrawAPI?.(api);
+      onExcalidrawAPIRef.current?.(api);
     },
-    [onExcalidrawAPI, setExcalidrawAPI],
+    [setExcalidrawAPI],
   );
 
   useEffect(() => {
@@ -162,6 +176,7 @@ const ExcalidrawBase = (props: ExcalidrawProps) => {
           initialData={initialData}
           onExcalidrawAPI={handleExcalidrawAPI}
           onMount={onMount}
+          onUnmount={onUnmount}
           onInitialize={onInitialize}
           isCollaborating={isCollaborating}
           onPointerUpdate={onPointerUpdate}
@@ -367,6 +382,8 @@ export { DiagramToCodePlugin } from "./components/DiagramToCodePlugin/DiagramToC
 export { getDataURL } from "./data/blob";
 export { isElementLink } from "@excalidraw/element";
 
+export { Fonts } from "./fonts/Fonts";
+
 export { setCustomTextMetricsProvider } from "@excalidraw/element";
 
 export { CommandPalette } from "./components/CommandPalette/CommandPalette";
@@ -378,7 +395,7 @@ export {
 } from "./charts";
 
 // -----------------------------------------------------------------------------
-// useAppStateValue() wrapper for host apps for the return type to reflect the
+// useExcalidrawStateValue() wrapper for host apps for the return type to reflect the
 // the potentially `undefined` value for initial render before the excalidrawAPI
 // is ready.
 //
@@ -388,25 +405,23 @@ export {
  * @param prop - appState prop(s) to subscribe to, or a selector function.
  * NOTE `prop/selector` is memoized and will not change after initial render
  */
-export function useAppStateValue<K extends keyof AppState>(
+export function useExcalidrawStateValue<K extends keyof AppState>(
   prop: K,
-  callback?: (value: AppState[K], appState: AppState) => void,
 ): AppState[K] | undefined;
-export function useAppStateValue<T extends keyof AppState>(
+export function useExcalidrawStateValue<T extends keyof AppState>(
   props: T[],
-  callback?: (values: AppState, appState: AppState) => void,
 ): AppState | undefined;
-export function useAppStateValue<T>(
+export function useExcalidrawStateValue<T>(
   selector: (appState: AppState) => T,
-  callback?: (value: T, appState: AppState) => void,
 ): T | undefined;
-export function useAppStateValue(
+export function useExcalidrawStateValue(
   selector:
     | keyof AppState
     | (keyof AppState)[]
     | ((appState: AppState) => unknown),
-  callback?: (value: any, appState: AppState) => void,
 ) {
-  return _useAppStateValue(selector as any, callback, false);
+  return _useAppStateValue(selector as any, false);
 }
 // -----------------------------------------------------------------------------
+
+export { _useOnAppStateChange as useOnExcalidrawStateChange };

packages/excalidraw/locales/en.json

@@ -53,7 +53,14 @@
     "arrowhead_crowfoot_many": "Crow's foot (many)",
     "arrowhead_crowfoot_one": "Crow's foot (one)",
     "arrowhead_crowfoot_one_or_many": "Crow's foot (one or many)",
+    "arrowhead_cardinality_one": "Cardinality (one)",
+    "arrowhead_cardinality_many": "Cardinality (many)",
+    "arrowhead_cardinality_one_or_many": "Cardinality (one or many)",
+    "arrowhead_cardinality_exactly_one": "Cardinality (exactly one)",
+    "arrowhead_cardinality_zero_or_one": "Cardinality (zero or one)",
+    "arrowhead_cardinality_zero_or_many": "Cardinality (zero or many)",
     "more_options": "More options",
+    "cardinality": "Cardinality",
     "arrowtypes": "Arrow type",
     "arrowtype_sharp": "Sharp arrow",
     "arrowtype_round": "Curved arrow",
@@ -624,7 +631,7 @@
   "mermaid": {
     "title": "Mermaid to Excalidraw",
     "button": "Insert",
-    "description": "Currently only <flowchartLink>Flowchart</flowchartLink>,<sequenceLink> Sequence, </sequenceLink> and <classLink>Class </classLink>Diagrams are supported. The other types will be rendered as image in Excalidraw.",
+    "description": "Currently only <flowchartLink>Flowchart</flowchartLink>, <sequenceLink>Sequence</sequenceLink>, <classLink>Class</classLink>, and <erdLink>Entity Relationship</erdLink> Diagrams are supported. The other types will be rendered as image in Excalidraw.",
     "syntax": "Mermaid Syntax",
     "preview": "Preview",
     "label": "Mermaid",
@@ -654,7 +661,7 @@
     "placeholder": {
       "title": "Let's design your diagram",
       "description": "Describe the diagram you want to create, and we'll generate it for you.",
-      "hint": "At the moment we know Flowchart, Sequence, and Class diagrams."
+      "hint": "At the moment we know Flowchart, Sequence, Class, State, and Entity Relationship diagrams."
     },
     "preview": "Preview",
     "insert": "Insert",

packages/excalidraw/package.json

@@ -88,7 +88,7 @@
     "@excalidraw/element": "0.18.0",
     "@excalidraw/laser-pointer": "1.3.1",
     "@excalidraw/math": "0.18.0",
-    "@excalidraw/mermaid-to-excalidraw": "2.0.0-rc4",
+    "@excalidraw/mermaid-to-excalidraw": "2.2.2",
     "@excalidraw/random-username": "1.1.0",
     "browser-fs-access": "0.38.0",
     "canvas-roundrect-polyfill": "0.0.1",

packages/excalidraw/renderer/interactiveScene.ts

@@ -41,6 +41,7 @@ import {
   maxBindingDistance_simple,
   isTextElement,
   LinearElementEditor,
+  getActiveTextElement,
 } from "@excalidraw/element";
 
 import { renderSelectionElement } from "@excalidraw/element";
@@ -58,6 +59,8 @@ import {
   isFocusPointVisible,
 } from "@excalidraw/element";
 
+import type { EditorInterface } from "@excalidraw/common";
+
 import type {
   TransformHandles,
   TransformHandleType,
@@ -86,6 +89,10 @@ import {
 } from "../scene/scrollbars";
 
 import { getClientColor, renderRemoteCursors } from "../clients";
+import {
+  getTextAutoResizeHandle,
+  getTextBoxPadding,
+} from "../textAutoResizeHandle";
 
 import {
   bootstrapCanvas,
@@ -1149,6 +1156,7 @@ const renderLinearPointHandles = (
           points[idx],
           idx,
           appState.zoom,
+          elementsMap,
         )
       ) {
         renderSingleLinearPoint(
@@ -1489,21 +1497,58 @@ const renderTextBox = (
   selectionColor: InteractiveCanvasRenderConfig["selectionColor"],
 ) => {
   context.save();
-  const padding = (DEFAULT_TRANSFORM_HANDLE_SPACING * 2) / appState.zoom.value;
+  const padding = getTextBoxPadding(appState.zoom.value);
   const width = text.width + padding * 2;
   const height = text.height + padding * 2;
-  const cx = text.x + width / 2;
+  const cx = text.x + text.width / 2;
-  const cy = text.y + height / 2;
+  const cy = text.y + text.height / 2;
-  const shiftX = -(width / 2 + padding);
+  const shiftX = -(text.width / 2 + padding);
-  const shiftY = -(height / 2 + padding);
+  const shiftY = -(text.height / 2 + padding);
   context.translate(cx + appState.scrollX, cy + appState.scrollY);
   context.rotate(text.angle);
   context.lineWidth = 1 / appState.zoom.value;
   context.strokeStyle = selectionColor;
+  context.globalAlpha = 0.5;
+  context.setLineDash([6 / appState.zoom.value, 4 / appState.zoom.value]);
   context.strokeRect(shiftX, shiftY, width, height);
   context.restore();
 };
 
+const renderResetAutoResizeHandle = (
+  text: NonDeleted<ExcalidrawTextElement>,
+  context: CanvasRenderingContext2D,
+  appState: InteractiveCanvasAppState,
+  selectionColor: InteractiveCanvasRenderConfig["selectionColor"],
+  formFactor: EditorInterface["formFactor"],
+) => {
+  const autoResizeHandle = getTextAutoResizeHandle(
+    text,
+    appState.zoom.value,
+    formFactor,
+  );
+
+  if (!autoResizeHandle) {
+    return;
+  }
+
+  context.save();
+  context.globalAlpha = 0.5;
+  context.lineWidth = 1.5 / appState.zoom.value;
+  context.lineCap = "round";
+  context.strokeStyle = selectionColor;
+  context.beginPath();
+  context.moveTo(
+    autoResizeHandle.start[0] + appState.scrollX,
+    autoResizeHandle.start[1] + appState.scrollY,
+  );
+  context.lineTo(
+    autoResizeHandle.end[0] + appState.scrollX,
+    autoResizeHandle.end[1] + appState.scrollY,
+  );
+  context.stroke();
+  context.restore();
+};
+
 const _renderInteractiveScene = ({
   app,
   canvas,
@@ -1584,10 +1629,19 @@ const _renderInteractiveScene = ({
     }
   }
 
-  if (
+  const activeTextElement = getActiveTextElement(selectedElements, appState);
-    appState.editingTextElement &&
+
-    isTextElement(appState.editingTextElement)
+  if (activeTextElement && !activeTextElement.autoResize) {
-  ) {
+    renderResetAutoResizeHandle(
+      activeTextElement,
+      context,
+      appState,
+      renderConfig.selectionColor,
+      editorInterface.formFactor,
+    );
+  }
+
+  if (appState.editingTextElement) {
     const textElement = allElementsMap.get(appState.editingTextElement.id) as
       | ExcalidrawTextElement
       | undefined;

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

@@ -1,6 +1,6 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`Test <MermaidToExcalidraw/> > should open mermaid popup when active tool is mermaid 1`] = `"<div class="Modal Dialog ttd-dialog" role="dialog" aria-modal="true" aria-labelledby="dialog-title"><div class="Modal__background"></div><div class="Modal__content" style="--max-width: 1520px;" tabindex="0"><div class="Island"><div class="Dialog__content"><div dir="ltr" data-orientation="horizontal" class="ttd-dialog-tabs-root"><p class="dialog-mermaid-title">Mermaid to Excalidraw</p><div data-state="active" data-orientation="horizontal" role="tabpanel" aria-labelledby="radix-:r4:-trigger-mermaid" id="radix-:r4:-content-mermaid" tabindex="0" class="ttd-dialog-content" style=""><div class="ttd-dialog-desc">Currently only <a href="https://mermaid.js.org/syntax/flowchart.html">Flowchart</a>,<a href="https://mermaid.js.org/syntax/sequenceDiagram.html"> Sequence, </a> and <a href="https://mermaid.js.org/syntax/classDiagram.html">Class </a>Diagrams are supported. The other types will be rendered as image in Excalidraw.</div><div class="ttd-dialog-panels"><div class="ttd-dialog-panel"><div class="ttd-dialog-panel-button-container invisible" style="justify-content: flex-start;"></div></div><div class="ttd-dialog-panel"><div class="ttd-dialog-output-wrapper "><div class="ttd-dialog-output-canvas-container"><div class="ttd-dialog-output-canvas-content"><canvas width="89" height="158" dir="ltr"></canvas></div></div></div><div class="ttd-dialog-panel-button-container" style="justify-content: flex-start;"><button type="button" class="excalidraw-button ttd-dialog-panel-button"><div class="">Insert<span><svg aria-hidden="true" focusable="false" role="img" viewBox="0 0 20 20" class="" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"><g stroke-width="1.25"><path d="M4.16602 10H15.8327"></path><path d="M12.5 13.3333L15.8333 10"></path><path d="M12.5 6.66666L15.8333 9.99999"></path></g></svg></span></div></button><div class="ttd-dialog-submit-shortcut"><div class="ttd-dialog-submit-shortcut__key">Ctrl</div><div class="ttd-dialog-submit-shortcut__key">Enter</div></div></div></div></div></div></div></div></div></div></div>"`;
+exports[`Test <MermaidToExcalidraw/> > should open mermaid popup when active tool is mermaid 1`] = `"<div class="Modal Dialog ttd-dialog" role="dialog" aria-modal="true" aria-labelledby="dialog-title"><div class="Modal__background"></div><div class="Modal__content" style="--max-width: 1520px;" tabindex="0"><div class="Island"><div class="Dialog__content"><div dir="ltr" data-orientation="horizontal" class="ttd-dialog-tabs-root"><p class="dialog-mermaid-title">Mermaid to Excalidraw</p><div data-state="active" data-orientation="horizontal" role="tabpanel" aria-labelledby="radix-:r4:-trigger-mermaid" id="radix-:r4:-content-mermaid" tabindex="0" class="ttd-dialog-content" style=""><div class="ttd-dialog-desc">Currently only <a href="https://mermaid.js.org/syntax/flowchart.html" target="_blank" rel="noreferrer">Flowchart</a>, <a href="https://mermaid.js.org/syntax/sequenceDiagram.html" target="_blank" rel="noreferrer">Sequence</a>, <a href="https://mermaid.js.org/syntax/classDiagram.html" target="_blank" rel="noreferrer">Class</a>, and <a href="https://mermaid.js.org/syntax/entityRelationshipDiagram.html" target="_blank" rel="noreferrer">Entity Relationship</a> Diagrams are supported. The other types will be rendered as image in Excalidraw.</div><div class="ttd-dialog-panels"><div class="ttd-dialog-panel"><div class="ttd-dialog-panel-button-container invisible" style="justify-content: flex-start;"></div></div><div class="ttd-dialog-panel"><div class="ttd-dialog-output-wrapper "><div class="ttd-dialog-output-canvas-container"><div class="ttd-dialog-output-canvas-content"><canvas width="89" height="158" dir="ltr"></canvas></div></div></div><div class="ttd-dialog-panel-button-container" style="justify-content: flex-start;"><button type="button" class="excalidraw-button ttd-dialog-panel-button"><div class="">Insert<span><svg aria-hidden="true" focusable="false" role="img" viewBox="0 0 20 20" class="" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"><g stroke-width="1.25"><path d="M4.16602 10H15.8327"></path><path d="M12.5 13.3333L15.8333 10"></path><path d="M12.5 6.66666L15.8333 9.99999"></path></g></svg></span></div></button><div class="ttd-dialog-submit-shortcut"><div class="ttd-dialog-submit-shortcut__key">Ctrl</div><div class="ttd-dialog-submit-shortcut__key">Enter</div></div></div></div></div></div></div></div></div></div></div>"`;
 
 exports[`Test <MermaidToExcalidraw/> > should show error in preview when mermaid library throws error 1`] = `
 "flowchart TD

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

@@ -224,7 +224,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 29,
+  "version": 22,
   "width": "94.00000",
   "x": 0,
   "y": 0,
@@ -350,8 +350,9 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 28,
+            "version": 21,
             "width": "88.00000",
+            "y": "7.20923",
           },
           "inserted": {
             "endBinding": {
@@ -381,8 +382,9 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 25,
+            "version": 20,
             "width": "88.00000",
+            "y": "0.01000",
           },
         },
       },
@@ -437,7 +439,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
             ],
             "startBinding": null,
-            "version": 29,
+            "version": 22,
             "width": "94.00000",
             "x": 0,
             "y": 0,
@@ -462,7 +464,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 28,
+            "version": 21,
             "width": "88.00000",
             "x": 6,
             "y": "7.20923",
@@ -1360,9 +1362,9 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 8,
+  "version": 7,
   "width": 88,
-  "x": 6,
+  "x": "6.00000",
   "y": "2.00947",
 }
 `;
@@ -1537,12 +1539,12 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 8,
+            "version": 7,
           },
           "inserted": {
             "endBinding": null,
             "startBinding": null,
-            "version": 7,
+            "version": 6,
           },
         },
       },
@@ -1722,7 +1724,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
   "updated": 1,
   "version": 8,
   "width": 88,
-  "x": 6,
+  "x": "6.00000",
   "y": "38.80379",
 }
 `;
@@ -1867,7 +1869,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
             "type": "arrow",
             "version": 8,
             "width": 88,
-            "x": 6,
+            "x": "6.00000",
             "y": "38.80379",
           },
           "inserted": {
@@ -2416,7 +2418,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 12,
+  "version": 11,
   "width": 488,
   "x": 6,
   "y": "-5.39000",
@@ -2581,7 +2583,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 12,
+            "version": 11,
             "width": 488,
             "x": 6,
             "y": "-5.39000",
@@ -11220,6 +11222,489 @@ exports[`history > multiplayer undo/redo > should redraw arrows on undo > [end o
 
 exports[`history > multiplayer undo/redo > should redraw arrows on undo > [end of test] undo stack 1`] = `[]`;
 
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] appState 1`] = `
+{
+  "activeEmbeddable": null,
+  "activeLockedId": null,
+  "activeTool": {
+    "customType": null,
+    "fromSelection": false,
+    "lastActiveTool": null,
+    "locked": false,
+    "type": "selection",
+  },
+  "bindMode": "orbit",
+  "bindingPreference": "enabled",
+  "collaborators": Map {},
+  "contextMenu": null,
+  "croppingElementId": null,
+  "currentHoveredFontFamily": null,
+  "currentItemArrowType": "round",
+  "currentItemBackgroundColor": "transparent",
+  "currentItemEndArrowhead": "arrow",
+  "currentItemFillStyle": "solid",
+  "currentItemFontFamily": 5,
+  "currentItemFontSize": 20,
+  "currentItemOpacity": 100,
+  "currentItemRoughness": 1,
+  "currentItemRoundness": "sharp",
+  "currentItemStartArrowhead": null,
+  "currentItemStrokeColor": "#1e1e1e",
+  "currentItemStrokeStyle": "solid",
+  "currentItemStrokeWidth": 2,
+  "currentItemTextAlign": "left",
+  "cursorButton": "up",
+  "defaultSidebarDockedPreference": false,
+  "editingFrame": null,
+  "editingGroupId": null,
+  "editingTextElement": null,
+  "elementsToHighlight": null,
+  "errorMessage": null,
+  "exportBackground": true,
+  "exportEmbedScene": false,
+  "exportScale": 1,
+  "exportWithDarkMode": false,
+  "fileHandle": null,
+  "followedBy": Set {},
+  "frameRendering": {
+    "clip": true,
+    "enabled": true,
+    "name": true,
+    "outline": true,
+  },
+  "frameToHighlight": null,
+  "gridModeEnabled": false,
+  "gridSize": 20,
+  "gridStep": 5,
+  "height": 0,
+  "hoveredElementIds": {},
+  "isBindingEnabled": true,
+  "isCropping": false,
+  "isLoading": false,
+  "isMidpointSnappingEnabled": true,
+  "isResizing": false,
+  "isRotating": false,
+  "lastPointerDownWith": "mouse",
+  "lockedMultiSelections": {},
+  "multiElement": null,
+  "newElement": null,
+  "objectsSnapModeEnabled": false,
+  "offsetLeft": 0,
+  "offsetTop": 0,
+  "openDialog": null,
+  "openMenu": null,
+  "openPopup": null,
+  "openSidebar": null,
+  "originSnapOffset": null,
+  "penDetected": false,
+  "penMode": false,
+  "preferredSelectionTool": {
+    "initialized": true,
+    "type": "selection",
+  },
+  "previousSelectedElementIds": {},
+  "resizingElement": null,
+  "scrollX": 0,
+  "scrollY": 0,
+  "searchMatches": null,
+  "selectedElementIds": {},
+  "selectedElementsAreBeingDragged": false,
+  "selectedGroupIds": {},
+  "selectionElement": null,
+  "shouldCacheIgnoreZoom": false,
+  "showHyperlinkPopup": false,
+  "showWelcomeScreen": true,
+  "snapLines": [],
+  "startBoundElement": null,
+  "stats": {
+    "open": false,
+    "panels": 3,
+  },
+  "suggestedBinding": null,
+  "theme": "light",
+  "toast": null,
+  "userToFollow": null,
+  "viewBackgroundColor": "#ffffff",
+  "viewModeEnabled": false,
+  "width": 0,
+  "zenModeEnabled": false,
+  "zoom": {
+    "value": 1,
+  },
+}
+`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] element 0 1`] = `
+{
+  "angle": 0,
+  "backgroundColor": "transparent",
+  "boundElements": null,
+  "customData": undefined,
+  "fillStyle": "solid",
+  "frameId": null,
+  "groupIds": [
+    "inner",
+    "outer",
+  ],
+  "height": 100,
+  "id": "id0",
+  "index": "a0",
+  "isDeleted": false,
+  "link": null,
+  "locked": false,
+  "opacity": 100,
+  "roughness": 1,
+  "roundness": null,
+  "strokeColor": "#1e1e1e",
+  "strokeStyle": "solid",
+  "strokeWidth": 2,
+  "type": "rectangle",
+  "updated": 1,
+  "version": 2,
+  "width": 100,
+  "x": 0,
+  "y": 0,
+}
+`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] element 1 1`] = `
+{
+  "angle": 0,
+  "backgroundColor": "transparent",
+  "boundElements": null,
+  "customData": undefined,
+  "fillStyle": "solid",
+  "frameId": null,
+  "groupIds": [
+    "outer",
+  ],
+  "height": 100,
+  "id": "id1",
+  "index": "a1",
+  "isDeleted": false,
+  "link": null,
+  "locked": false,
+  "opacity": 100,
+  "roughness": 1,
+  "roundness": null,
+  "strokeColor": "#1e1e1e",
+  "strokeStyle": "solid",
+  "strokeWidth": 2,
+  "type": "rectangle",
+  "updated": 1,
+  "version": 2,
+  "width": 100,
+  "x": 100,
+  "y": 100,
+}
+`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] element 2 1`] = `
+{
+  "angle": 0,
+  "backgroundColor": "transparent",
+  "boundElements": null,
+  "customData": undefined,
+  "fillStyle": "solid",
+  "frameId": null,
+  "groupIds": [
+    "inner",
+    "outer",
+  ],
+  "height": 100,
+  "id": "id2",
+  "index": "a2",
+  "isDeleted": false,
+  "link": null,
+  "locked": false,
+  "opacity": 100,
+  "roughness": 1,
+  "roundness": null,
+  "strokeColor": "#1e1e1e",
+  "strokeStyle": "solid",
+  "strokeWidth": 2,
+  "type": "rectangle",
+  "updated": 1,
+  "version": 2,
+  "width": 100,
+  "x": 200,
+  "y": 200,
+}
+`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] number of elements 1`] = `3`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] number of renders 1`] = `16`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] redo stack 1`] = `[]`;
+
+exports[`history > multiplayer undo/redo > should support undo and redo when escape unwinds nested group editing > [end of test] undo stack 1`] = `
+[
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "selectedElementIds": {
+            "id0": true,
+            "id1": true,
+            "id2": true,
+          },
+          "selectedGroupIds": {
+            "outer": true,
+          },
+        },
+        "inserted": {
+          "selectedElementIds": {},
+          "selectedGroupIds": {},
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {
+        "id0": {
+          "deleted": {
+            "angle": 0,
+            "backgroundColor": "transparent",
+            "boundElements": null,
+            "customData": undefined,
+            "fillStyle": "solid",
+            "frameId": null,
+            "groupIds": [
+              "inner",
+              "outer",
+            ],
+            "height": 100,
+            "index": "a0",
+            "isDeleted": false,
+            "link": null,
+            "locked": false,
+            "opacity": 100,
+            "roughness": 1,
+            "roundness": null,
+            "strokeColor": "#1e1e1e",
+            "strokeStyle": "solid",
+            "strokeWidth": 2,
+            "type": "rectangle",
+            "version": 2,
+            "width": 100,
+            "x": 0,
+            "y": 0,
+          },
+          "inserted": {
+            "isDeleted": true,
+            "version": 1,
+          },
+        },
+        "id1": {
+          "deleted": {
+            "angle": 0,
+            "backgroundColor": "transparent",
+            "boundElements": null,
+            "customData": undefined,
+            "fillStyle": "solid",
+            "frameId": null,
+            "groupIds": [
+              "outer",
+            ],
+            "height": 100,
+            "index": "a1",
+            "isDeleted": false,
+            "link": null,
+            "locked": false,
+            "opacity": 100,
+            "roughness": 1,
+            "roundness": null,
+            "strokeColor": "#1e1e1e",
+            "strokeStyle": "solid",
+            "strokeWidth": 2,
+            "type": "rectangle",
+            "version": 2,
+            "width": 100,
+            "x": 100,
+            "y": 100,
+          },
+          "inserted": {
+            "isDeleted": true,
+            "version": 1,
+          },
+        },
+        "id2": {
+          "deleted": {
+            "angle": 0,
+            "backgroundColor": "transparent",
+            "boundElements": null,
+            "customData": undefined,
+            "fillStyle": "solid",
+            "frameId": null,
+            "groupIds": [
+              "inner",
+              "outer",
+            ],
+            "height": 100,
+            "index": "a2",
+            "isDeleted": false,
+            "link": null,
+            "locked": false,
+            "opacity": 100,
+            "roughness": 1,
+            "roundness": null,
+            "strokeColor": "#1e1e1e",
+            "strokeStyle": "solid",
+            "strokeWidth": 2,
+            "type": "rectangle",
+            "version": 2,
+            "width": 100,
+            "x": 200,
+            "y": 200,
+          },
+          "inserted": {
+            "isDeleted": true,
+            "version": 1,
+          },
+        },
+      },
+      "updated": {},
+    },
+    "id": "id5",
+  },
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "editingGroupId": "outer",
+          "selectedElementIds": {},
+          "selectedGroupIds": {
+            "inner": true,
+          },
+        },
+        "inserted": {
+          "editingGroupId": null,
+          "selectedElementIds": {
+            "id1": true,
+          },
+          "selectedGroupIds": {
+            "outer": true,
+          },
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {},
+      "updated": {},
+    },
+    "id": "id7",
+  },
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "editingGroupId": "inner",
+          "selectedElementIds": {},
+          "selectedGroupIds": {},
+        },
+        "inserted": {
+          "editingGroupId": "outer",
+          "selectedElementIds": {
+            "id2": true,
+          },
+          "selectedGroupIds": {
+            "inner": true,
+          },
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {},
+      "updated": {},
+    },
+    "id": "id9",
+  },
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "editingGroupId": "outer",
+          "selectedElementIds": {
+            "id2": true,
+          },
+          "selectedGroupIds": {
+            "inner": true,
+          },
+        },
+        "inserted": {
+          "editingGroupId": "inner",
+          "selectedElementIds": {},
+          "selectedGroupIds": {},
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {},
+      "updated": {},
+    },
+    "id": "id19",
+  },
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "editingGroupId": null,
+          "selectedElementIds": {
+            "id1": true,
+          },
+          "selectedGroupIds": {
+            "outer": true,
+          },
+        },
+        "inserted": {
+          "editingGroupId": "outer",
+          "selectedElementIds": {},
+          "selectedGroupIds": {
+            "inner": true,
+          },
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {},
+      "updated": {},
+    },
+    "id": "id20",
+  },
+  {
+    "appState": AppStateDelta {
+      "delta": Delta {
+        "deleted": {
+          "selectedElementIds": {},
+          "selectedGroupIds": {},
+        },
+        "inserted": {
+          "selectedElementIds": {
+            "id0": true,
+            "id1": true,
+            "id2": true,
+          },
+          "selectedGroupIds": {
+            "outer": true,
+          },
+        },
+      },
+    },
+    "elements": {
+      "added": {},
+      "removed": {},
+      "updated": {},
+    },
+    "id": "id21",
+  },
+]
+`;
+
 exports[`history > multiplayer undo/redo > should update history entries after remote changes on the same properties > [end of test] appState 1`] = `
 {
   "activeEmbeddable": null,
@@ -16636,7 +17121,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "fillStyle": "solid",
             "frameId": null,
             "groupIds": [],
-            "height": "0.00120",
+            "height": 0,
             "index": "a3",
             "isDeleted": false,
             "link": null,
@@ -16649,7 +17134,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               [
                 "88.00000",
-                "0.00120",
+                0,
               ],
             ],
             "roughness": 1,
@@ -16672,7 +17157,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "version": 7,
             "width": "88.00000",
             "x": 6,
-            "y": "0.00880",
+            "y": "0.01000",
           },
           "inserted": {
             "isDeleted": true,
@@ -18650,7 +19135,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "fillStyle": "solid",
             "frameId": null,
             "groupIds": [],
-            "height": "0.00120",
+            "height": 0,
             "index": "a3",
             "isDeleted": false,
             "link": null,
@@ -18663,7 +19148,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               [
                 "88.00000",
-                "0.00120",
+                0,
               ],
             ],
             "roughness": 1,
@@ -18686,7 +19171,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "version": 7,
             "width": "88.00000",
             "x": 6,
-            "y": "0.00880",
+            "y": "0.01000",
           },
           "inserted": {
             "isDeleted": true,
@@ -19398,7 +19883,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "fillStyle": "solid",
             "frameId": null,
             "groupIds": [],
-            "height": "0.00120",
+            "height": 0,
             "index": "a3",
             "isDeleted": false,
             "link": null,
@@ -19411,7 +19896,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               [
                 "88.00000",
-                "0.00120",
+                0,
               ],
             ],
             "roughness": 1,
@@ -19434,7 +19919,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "version": 7,
             "width": "88.00000",
             "x": 6,
-            "y": "0.00880",
+            "y": "0.01000",
           },
           "inserted": {
             "isDeleted": true,

packages/excalidraw/tests/appStateHooks.test.tsx

@@ -0,0 +1,111 @@
+import { act, cleanup, render, screen } from "@testing-library/react";
+import { vi } from "vitest";
+
+import { getDefaultAppState } from "../appState";
+import { ExcalidrawAPIContext } from "../components/App";
+import { AppStateObserver } from "../components/AppStateObserver";
+import {
+  useAppStateValue,
+  useOnAppStateChange,
+} from "../hooks/useAppStateValue";
+
+import type { AppState, ExcalidrawImperativeAPI } from "../types";
+
+const createAppState = (): AppState => ({
+  ...getDefaultAppState(),
+  width: 0,
+  height: 0,
+  offsetLeft: 0,
+  offsetTop: 0,
+});
+
+const createMockAPI = (initialState: AppState) => {
+  let state = initialState;
+  const observer = new AppStateObserver(() => state);
+
+  return {
+    api: {
+      isDestroyed: false,
+      getAppState: () => state,
+      onStateChange: observer.onStateChange,
+    } as Pick<
+      ExcalidrawImperativeAPI,
+      "isDestroyed" | "getAppState" | "onStateChange"
+    > as ExcalidrawImperativeAPI,
+    updateAppState: (partial: Partial<AppState>) => {
+      const prevState = state;
+      state = { ...state, ...partial };
+      observer.flush(prevState);
+    },
+  };
+};
+
+describe("app state hooks", () => {
+  afterEach(() => {
+    cleanup();
+  });
+
+  it("useAppStateValue rerenders when the selected value changes", () => {
+    const renderSpy = vi.fn();
+    const { api, updateAppState } = createMockAPI(createAppState());
+
+    const ValueConsumer = () => {
+      const value = useAppStateValue("viewModeEnabled");
+      renderSpy(value);
+      return <div data-testid="value">{String(value)}</div>;
+    };
+
+    render(
+      <ExcalidrawAPIContext.Provider value={api}>
+        <ValueConsumer />
+      </ExcalidrawAPIContext.Provider>,
+    );
+
+    expect(screen.getByTestId("value").textContent).toBe("false");
+    expect(renderSpy).toHaveBeenCalledTimes(1);
+
+    act(() => {
+      updateAppState({ viewModeEnabled: true });
+    });
+
+    expect(screen.getByTestId("value").textContent).toBe("true");
+    expect(renderSpy).toHaveBeenCalledTimes(2);
+  });
+
+  it("useOnAppStateChange notifies without rerendering", () => {
+    const renderSpy = vi.fn();
+    const callback = vi.fn();
+    const { api, updateAppState } = createMockAPI(createAppState());
+
+    const ChangeConsumer = () => {
+      const value = useOnAppStateChange("viewModeEnabled", callback);
+      renderSpy(value);
+      return <div data-testid="value">{String(value)}</div>;
+    };
+
+    render(
+      <ExcalidrawAPIContext.Provider value={api}>
+        <ChangeConsumer />
+      </ExcalidrawAPIContext.Provider>,
+    );
+
+    expect(screen.getByTestId("value").textContent).toBe("undefined");
+    expect(renderSpy).toHaveBeenCalledTimes(1);
+    expect(callback).toHaveBeenCalledTimes(1);
+    expect(callback).toHaveBeenCalledWith(
+      false,
+      expect.objectContaining({ viewModeEnabled: false }),
+    );
+
+    act(() => {
+      updateAppState({ viewModeEnabled: true });
+    });
+
+    expect(renderSpy).toHaveBeenCalledTimes(1);
+    expect(callback).toHaveBeenCalledTimes(2);
+    expect(callback).toHaveBeenLastCalledWith(
+      true,
+      expect.objectContaining({ viewModeEnabled: true }),
+    );
+  });
+});

packages/excalidraw/tests/data/restore.test.ts

@@ -200,6 +200,26 @@ describe("restoreElements", () => {
     });
   });
 
+  it("should normalize legacy crowfoot arrowheads on restore", () => {
+    const arrowElement = API.createElement({
+      type: "arrow",
+    });
+
+    const restoredArrow = restore.restoreElements(
+      [
+        {
+          ...arrowElement,
+          startArrowhead: "crowfoot_one",
+          endArrowhead: "crowfoot_one_or_many",
+        } as any,
+      ],
+      null,
+    )[0] as ExcalidrawLinearElement;
+
+    expect(restoredArrow.startArrowhead).toBe("cardinality_one");
+    expect(restoredArrow.endArrowhead).toBe("cardinality_one_or_many");
+  });
+
   it("should strip element if restore fails", () => {
     const rect1 = API.createElement({
       type: "rectangle",

packages/excalidraw/tests/helpers/ui.ts

@@ -4,6 +4,7 @@ import {
   elementCenterPoint,
   getCommonBounds,
   getElementPointsCoords,
+  getLineHeightInPx,
 } from "@excalidraw/element";
 import { cropElement } from "@excalidraw/element";
 import {
@@ -20,7 +21,7 @@ import {
   isTextElement,
   isFrameLikeElement,
 } from "@excalidraw/element";
-import { KEYS, arrayToMap } from "@excalidraw/common";
+import { KEYS, arrayToMap, getLineHeight } from "@excalidraw/common";
 
 import type { GlobalPoint, LocalPoint, Radians } from "@excalidraw/math";
 
@@ -516,8 +517,17 @@ export class UI {
     UI.clickTool(type);
 
     if (type === "text") {
+      const clickY = h.state.gridModeEnabled
+        ? y
+        : y +
+          getLineHeightInPx(
+            h.state.currentItemFontSize,
+            getLineHeight(h.state.currentItemFontFamily),
+          ) /
+            2;
+
       mouse.reset();
-      mouse.click(x, y);
+      mouse.click(x, clickY);
     } else if ((type === "line" || type === "arrow") && points.length > 2) {
       points.forEach((point) => {
         mouse.reset();

packages/excalidraw/tests/history.test.tsx

@@ -2971,6 +2971,82 @@ describe("history", () => {
       expect(h.state.editingGroupId).toBeNull();
     });
 
+    // TODO mark with "noncritical" tag once we migrate to vitest 4
+    it.skip("should support undo and redo when escape unwinds nested group editing", async () => {
+      const rectA = API.createElement({
+        type: "rectangle",
+        groupIds: ["inner", "outer"],
+        x: 0,
+      });
+      const rectB = API.createElement({
+        type: "rectangle",
+        groupIds: ["outer"],
+        x: 100,
+      });
+      const rectC = API.createElement({
+        type: "rectangle",
+        groupIds: ["inner", "outer"],
+        x: 200,
+      });
+
+      API.setElements([rectA, rectB, rectC]);
+      mouse.select(rectA);
+      mouse.doubleClickOn(rectA);
+      mouse.doubleClickOn(rectA);
+
+      assertSelectedElements([rectA]);
+      expect(h.state.editingGroupId).toBe("inner");
+      expect(API.getUndoStack().length).toBe(3);
+      expect(API.getRedoStack().length).toBe(0);
+
+      Keyboard.keyPress(KEYS.ESCAPE);
+      assertSelectedElements([rectA, rectC]);
+      expect(h.state.editingGroupId).toBe("outer");
+      expect(API.getUndoStack().length).toBe(4);
+      expect(API.getRedoStack().length).toBe(0);
+
+      Keyboard.keyPress(KEYS.ESCAPE);
+      assertSelectedElements([rectA, rectB, rectC]);
+      expect(h.state.editingGroupId).toBeNull();
+      expect(h.state.selectedGroupIds).toEqual({ outer: true });
+      expect(API.getUndoStack().length).toBe(5);
+      expect(API.getRedoStack().length).toBe(0);
+
+      Keyboard.keyPress(KEYS.ESCAPE);
+      expect(API.getSelectedElements()).toEqual([]);
+      expect(h.state.editingGroupId).toBeNull();
+      expect(h.state.selectedGroupIds).toEqual({});
+      expect(API.getUndoStack().length).toBe(6);
+      expect(API.getRedoStack().length).toBe(0);
+
+      Keyboard.undo();
+      assertSelectedElements([rectA, rectB, rectC]);
+      expect(h.state.editingGroupId).toBeNull();
+      expect(h.state.selectedGroupIds).toEqual({ outer: true });
+
+      Keyboard.undo();
+      assertSelectedElements([rectA, rectC]);
+      expect(h.state.editingGroupId).toBe("outer");
+
+      Keyboard.undo();
+      assertSelectedElements([rectA]);
+      expect(h.state.editingGroupId).toBe("inner");
+
+      Keyboard.redo();
+      assertSelectedElements([rectA, rectC]);
+      expect(h.state.editingGroupId).toBe("outer");
+
+      Keyboard.redo();
+      assertSelectedElements([rectA, rectB, rectC]);
+      expect(h.state.editingGroupId).toBeNull();
+      expect(h.state.selectedGroupIds).toEqual({ outer: true });
+
+      Keyboard.redo();
+      expect(API.getSelectedElements()).toEqual([]);
+      expect(h.state.editingGroupId).toBeNull();
+      expect(h.state.selectedGroupIds).toEqual({});
+    });
+
     it("should iterate through the history when selected or editing linear element was remotely deleted", async () => {
       // create three point arrow
       UI.clickTool("arrow");

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

@@ -41,13 +41,15 @@ describe("event callbacks", () => {
 
     await render(
       <Excalidraw
-        onExcalidrawAPI={(api) =>
+        onExcalidrawAPI={(api) => {
-          lifecyclePromise.resolve({
+          if (api) {
-            api: api as ExcalidrawImperativeAPI,
+            lifecyclePromise.resolve({
-            mount: api.onEvent("editor:mount"),
+              api,
-            initialize: api.onEvent("editor:initialize"),
+              mount: api.onEvent("editor:mount"),
-          })
+              initialize: api.onEvent("editor:initialize"),
-        }
+            });
+          }
+        }}
       />,
     );
 

packages/excalidraw/tests/selection.test.tsx

@@ -326,7 +326,7 @@ describe("select single element on the scene", () => {
     fireEvent.pointerUp(canvas);
 
     expect(renderInteractiveScene).toHaveBeenCalledTimes(8);
-    expect(renderStaticScene).toHaveBeenCalledTimes(6);
+    expect(renderStaticScene).toHaveBeenCalledTimes(7);
     expect(h.state.selectionElement).toBeNull();
     expect(h.elements.length).toEqual(1);
     expect(h.state.selectedElementIds[h.elements[0].id]).toBeTruthy();
@@ -359,7 +359,7 @@ describe("select single element on the scene", () => {
     fireEvent.pointerUp(canvas);
 
     expect(renderInteractiveScene).toHaveBeenCalledTimes(8);
-    expect(renderStaticScene).toHaveBeenCalledTimes(6);
+    expect(renderStaticScene).toHaveBeenCalledTimes(7);
     expect(h.state.selectionElement).toBeNull();
     expect(h.elements.length).toEqual(1);
     expect(h.state.selectedElementIds[h.elements[0].id]).toBeTruthy();
@@ -392,7 +392,7 @@ describe("select single element on the scene", () => {
     fireEvent.pointerUp(canvas);
 
     expect(renderInteractiveScene).toHaveBeenCalledTimes(8);
-    expect(renderStaticScene).toHaveBeenCalledTimes(6);
+    expect(renderStaticScene).toHaveBeenCalledTimes(7);
     expect(h.state.selectionElement).toBeNull();
     expect(h.elements.length).toEqual(1);
     expect(h.state.selectedElementIds[h.elements[0].id]).toBeTruthy();
@@ -438,7 +438,7 @@ describe("select single element on the scene", () => {
     fireEvent.pointerUp(canvas);
 
     expect(renderInteractiveScene).toHaveBeenCalledTimes(10);
-    expect(renderStaticScene).toHaveBeenCalledTimes(8);
+    expect(renderStaticScene).toHaveBeenCalledTimes(9);
     expect(h.state.selectionElement).toBeNull();
     expect(h.elements.length).toEqual(1);
     expect(h.state.selectedElementIds[h.elements[0].id]).toBeTruthy();
@@ -483,7 +483,7 @@ describe("select single element on the scene", () => {
     fireEvent.pointerUp(canvas);
 
     expect(renderInteractiveScene).toHaveBeenCalledTimes(10);
-    expect(renderStaticScene).toHaveBeenCalledTimes(8);
+    expect(renderStaticScene).toHaveBeenCalledTimes(9);
     expect(h.state.selectionElement).toBeNull();
     expect(h.elements.length).toEqual(1);
     expect(h.state.selectedElementIds[h.elements[0].id]).toBeTruthy();
@@ -558,3 +558,58 @@ describe("selectedElementIds stability", () => {
     expect(h.state.selectedElementIds).toBe(selectedElementIds_2);
   });
 });
+
+describe("deselecting", () => {
+  beforeEach(async () => {
+    await render(<Excalidraw handleKeyboardGlobally={true} />);
+  });
+
+  it("esc unwinds nested group editing before deselecting", () => {
+    const rectA = API.createElement({
+      type: "rectangle",
+      x: 0,
+      y: 0,
+      groupIds: ["inner", "outer"],
+    });
+    const rectB = API.createElement({
+      type: "rectangle",
+      x: 100,
+      y: 0,
+      groupIds: ["outer"],
+    });
+    const rectC = API.createElement({
+      type: "rectangle",
+      x: 200,
+      y: 0,
+      groupIds: ["inner", "outer"],
+    });
+
+    API.setElements([rectA, rectB, rectC]);
+
+    mouse.select(rectA);
+    assertSelectedElements(rectA, rectB, rectC);
+    expect(h.state.editingGroupId).toBeNull();
+
+    mouse.doubleClickOn(rectA);
+    assertSelectedElements(rectA, rectC);
+    expect(h.state.editingGroupId).toBe("outer");
+
+    mouse.doubleClickOn(rectA);
+    assertSelectedElements(rectA);
+    expect(h.state.editingGroupId).toBe("inner");
+
+    Keyboard.keyPress(KEYS.ESCAPE);
+    assertSelectedElements(rectA, rectC);
+    expect(h.state.editingGroupId).toBe("outer");
+
+    Keyboard.keyPress(KEYS.ESCAPE);
+    assertSelectedElements(rectA, rectB, rectC);
+    expect(h.state.editingGroupId).toBeNull();
+    expect(h.state.selectedGroupIds).toEqual({ outer: true });
+
+    Keyboard.keyPress(KEYS.ESCAPE);
+    expect(API.getSelectedElements()).toEqual([]);
+    expect(h.state.editingGroupId).toBeNull();
+    expect(h.state.selectedGroupIds).toEqual({});
+  });
+});

packages/excalidraw/textAutoResizeHandle.ts

@@ -0,0 +1,88 @@
+import { DEFAULT_TRANSFORM_HANDLE_SPACING } from "@excalidraw/common";
+import {
+  pointFrom,
+  pointRotateRads,
+  type GlobalPoint,
+  type Radians,
+} from "@excalidraw/math";
+
+import type { EditorInterface } from "@excalidraw/common";
+
+import type { ExcalidrawTextElement } from "@excalidraw/element/types";
+
+const TEXT_AUTO_RESIZE_HANDLE_GAP = 12;
+const TEXT_AUTO_RESIZE_HANDLE_LENGTH = 16;
+const TEXT_AUTO_RESIZE_HANDLE_HITBOX_WIDTH = 10;
+const TEXT_AUTO_RESIZE_HANDLE_HITBOX_HEIGHT =
+  TEXT_AUTO_RESIZE_HANDLE_LENGTH + 2;
+const MAX_HANDLE_HEIGHT_RATIO = 0.8;
+
+export const getTextBoxPadding = (zoomValue: number) =>
+  (DEFAULT_TRANSFORM_HANDLE_SPACING * 2) / zoomValue;
+
+export const getTextAutoResizeHandle = (
+  textElement: ExcalidrawTextElement,
+  zoomValue: number,
+  formFactor: EditorInterface["formFactor"],
+) => {
+  if (
+    formFactor !== "desktop" ||
+    TEXT_AUTO_RESIZE_HANDLE_LENGTH >
+      textElement.height * zoomValue * MAX_HANDLE_HEIGHT_RATIO
+  ) {
+    return null;
+  }
+
+  const padding = getTextBoxPadding(zoomValue);
+  const gap = TEXT_AUTO_RESIZE_HANDLE_GAP / zoomValue;
+  const length = TEXT_AUTO_RESIZE_HANDLE_LENGTH / zoomValue;
+  const center = pointFrom(
+    textElement.x + textElement.width / 2,
+    textElement.y + textElement.height / 2,
+  );
+  const handleCenter = pointRotateRads(
+    pointFrom(center[0] + textElement.width / 2 + padding + gap, center[1]),
+    center,
+    textElement.angle,
+  );
+
+  return {
+    center: handleCenter,
+    start: pointRotateRads(
+      pointFrom(handleCenter[0], handleCenter[1] - length / 2),
+      handleCenter,
+      textElement.angle,
+    ) as GlobalPoint,
+    end: pointRotateRads(
+      pointFrom(handleCenter[0], handleCenter[1] + length / 2),
+      handleCenter,
+      textElement.angle,
+    ) as GlobalPoint,
+    hitboxWidth: TEXT_AUTO_RESIZE_HANDLE_HITBOX_WIDTH / zoomValue,
+    hitboxHeight: TEXT_AUTO_RESIZE_HANDLE_HITBOX_HEIGHT / zoomValue,
+  };
+};
+
+export const isPointHittingTextAutoResizeHandle = (
+  point: Readonly<{ x: number; y: number }>,
+  textElement: ExcalidrawTextElement,
+  zoomValue: number,
+  formFactor: EditorInterface["formFactor"],
+) => {
+  const handle = getTextAutoResizeHandle(textElement, zoomValue, formFactor);
+
+  if (!handle) {
+    return false;
+  }
+
+  const unrotatedPoint = pointRotateRads(
+    pointFrom(point.x, point.y),
+    handle.center,
+    -textElement.angle as Radians,
+  );
+
+  return (
+    Math.abs(unrotatedPoint[0] - handle.center[0]) <= handle.hitboxWidth / 2 &&
+    Math.abs(unrotatedPoint[1] - handle.center[1]) <= handle.hitboxHeight / 2
+  );
+};

packages/excalidraw/types.ts

@@ -32,6 +32,7 @@ import type {
   OrderedExcalidrawElement,
   ExcalidrawNonSelectionElement,
   BindMode,
+  ExcalidrawTextElement,
 } from "@excalidraw/element/types";
 
 import type {
@@ -327,7 +328,7 @@ export interface AppState {
   /**
    * set when a new text is created or when an existing text is being edited
    */
-  editingTextElement: NonDeletedExcalidrawElement | null;
+  editingTextElement: ExcalidrawTextElement | null;
   activeTool: {
     /**
      * indicates a previous tool we should revert back to if we deselect the
@@ -573,11 +574,15 @@ export interface ExcalidrawProps {
    * Invoked as soon as the Excalidraw API is available
    * NOTE editor is not yet mounted, and state is not yet initialized
    */
-  onExcalidrawAPI?: (api: ExcalidrawImperativeAPI) => void;
+  onExcalidrawAPI?: (api: ExcalidrawImperativeAPI | null) => void;
   /**
    * Invoked once the editor root is mounted.
    */
   onMount?: (payload: ExcalidrawMountPayload) => void;
+  /**
+   * Invoked when the editor root is unmounted.
+   */
+  onUnmount?: () => void;
   /**
    * Invoked once the initial scene is loaded.
    */
@@ -872,9 +877,8 @@ export type PointerDownState = Readonly<{
     // by default same as PointerDownState.origin. On alt-duplication, reset
     // to current pointer position at time of duplication.
     origin: { x: number; y: number };
-    // Whether to block drag after lasso selection
+    // explicit flag for specific scenarios such as:
-    // this is meant to be used to block dragging after lasso selection on PCs
+    // - after lasso selection until the next pointer down
-    // until the next pointer down
     blockDragging: boolean;
   };
   // We need to have these in the state so that we can unsubscribe them
@@ -907,9 +911,12 @@ export type ExcalidrawMountPayload = {
 export type ExcalidrawImperativeAPIEventMap = {
   "editor:mount": [payload: ExcalidrawMountPayload];
   "editor:initialize": [api: ExcalidrawImperativeAPI];
+  "editor:unmount": [];
 };
 
 export interface ExcalidrawImperativeAPI {
+  /** Whether the editor has been unmounted and the API is no longer usable. */
+  isDestroyed: boolean;
   updateScene: InstanceType<typeof App>["updateScene"];
   applyDeltas: InstanceType<typeof App>["applyDeltas"];
   mutateElement: InstanceType<typeof App>["mutateElement"];

packages/excalidraw/wysiwyg/textWysiwyg.test.tsx

@@ -1,7 +1,10 @@
 import { queryByText } from "@testing-library/react";
 
 import { pointFrom } from "@excalidraw/math";
-import { getOriginalContainerHeightFromCache } from "@excalidraw/element";
+import {
+  getLineHeightInPx,
+  getOriginalContainerHeightFromCache,
+} from "@excalidraw/element";
 
 import {
   CODES,
@@ -42,6 +45,28 @@ unmountComponent();
 const tab = "    ";
 const mouse = new Pointer("mouse");
 
+const exitTextEditorAndAssertSelection = async ({
+  editor,
+  selectedIds,
+  nextText,
+}: {
+  editor: HTMLTextAreaElement;
+  selectedIds: string[];
+  nextText?: string;
+}) => {
+  if (nextText !== undefined) {
+    updateTextEditor(editor, nextText);
+  }
+
+  Keyboard.exitTextEditor(editor);
+
+  expect(await getTextEditor({ waitForEditor: false })).toBe(null);
+  expect(window.h.state.editingTextElement).toBeNull();
+  expect(API.getSelectedElements().map((element) => element.id)).toEqual(
+    selectedIds,
+  );
+};
+
 describe("textWysiwyg", () => {
   describe("start text editing", () => {
     const { h } = window;
@@ -210,6 +235,42 @@ describe("textWysiwyg", () => {
       expect(h.elements.length).toBe(1);
     });
 
+    it("should vertically center newly created text on the cursor when clicked with text tool", async () => {
+      API.setAppState({
+        currentItemFontFamily: FONT_FAMILY.Cascadia,
+        currentItemFontSize: 40,
+      });
+      UI.clickTool("text");
+
+      mouse.clickAt(120, 80);
+
+      const editor = await getTextEditor();
+      const text = h.elements[0] as ExcalidrawTextElement;
+      const lineHeightPx = getLineHeightInPx(text.fontSize, text.lineHeight);
+
+      expect(editor).not.toBe(null);
+      expect(text.y + lineHeightPx / 2).toBe(80);
+    });
+
+    it("should snap newly created text top-left to the current grid cell when clicked with text tool in grid mode", async () => {
+      API.setAppState({
+        currentItemFontFamily: FONT_FAMILY.Cascadia,
+        currentItemFontSize: 40,
+        gridModeEnabled: true,
+        gridSize: 24,
+      });
+      UI.clickTool("text");
+
+      mouse.clickAt(113, 86);
+
+      const editor = await getTextEditor();
+      const text = h.elements[0] as ExcalidrawTextElement;
+
+      expect(editor).not.toBe(null);
+      expect(text.x).toBe(96);
+      expect(text.y).toBe(72);
+    });
+
     it("should edit text under cursor when double-clicked with selection tool", async () => {
       const text = API.createElement({
         type: "text",
@@ -232,6 +293,94 @@ describe("textWysiwyg", () => {
       expect(h.elements.length).toBe(1);
     });
 
+    it("should reselect text after exiting wysiwyg with escape", async () => {
+      const text = API.createElement({
+        type: "text",
+        text: "ola",
+        x: 60,
+        y: 0,
+        width: 100,
+        height: 100,
+      });
+
+      API.setElements([text]);
+      API.setSelectedElements([text]);
+      UI.clickTool("selection");
+
+      Keyboard.keyPress(KEYS.ENTER);
+
+      const editor = await getTextEditor();
+
+      expect(editor).not.toBe(null);
+      expect(h.state.editingTextElement?.id).toBe(text.id);
+
+      await exitTextEditorAndAssertSelection({
+        editor,
+        selectedIds: [text.id],
+      });
+    });
+
+    it("should edit selected bound text on single click", async () => {
+      const container = API.createElement({
+        type: "rectangle",
+        width: 160,
+        height: 70,
+        boundElements: [],
+      });
+      const text = API.createElement({
+        type: "text",
+        text: "Hello World!",
+        x: container.x + 20,
+        y: container.y + 20,
+        width: 120,
+        height: 25,
+        containerId: container.id,
+      });
+
+      API.setElements([container, text]);
+      API.updateElement(container, {
+        boundElements: [{ type: "text", id: text.id }],
+      });
+      API.setSelectedElements([container]);
+      UI.clickTool("selection");
+
+      mouse.clickAt(text.x + 26, text.y + 10);
+
+      const editor = await getTextEditor();
+
+      expect(editor).not.toBe(null);
+    });
+
+    it("should not edit selected bound text container when only the container was single-clicked", async () => {
+      const container = API.createElement({
+        type: "rectangle",
+        width: 160,
+        height: 70,
+        boundElements: [],
+      });
+      const text = API.createElement({
+        type: "text",
+        text: "Hello World!",
+        x: container.x + 20,
+        y: container.y + 20,
+        width: 120,
+        height: 25,
+        containerId: container.id,
+      });
+
+      API.setElements([container, text]);
+      API.updateElement(container, {
+        boundElements: [{ type: "text", id: text.id }],
+      });
+      API.setSelectedElements([container]);
+      UI.clickTool("selection");
+
+      mouse.clickAt(container.x + 5, container.y + 10);
+
+      expect(h.state.editingTextElement).toBe(null);
+      expect(await getTextEditor({ waitForEditor: false })).toBe(null);
+    });
+
     // FIXME too flaky. No one knows why.
     it.skip("should bump the version of a labeled arrow when the label is updated", async () => {
       const arrow = UI.createElement("arrow", {
@@ -1205,6 +1354,40 @@ describe("textWysiwyg", () => {
       );
     });
 
+    it.each([
+      {
+        label: "container",
+        createElements: () => API.createTextContainer(),
+      },
+      {
+        label: "arrow",
+        createElements: () => API.createLabeledArrow(),
+      },
+    ])(
+      "should reselect $label after deleting bound text with escape",
+      async ({ createElements }) => {
+        const [selectedElement, text] = createElements();
+        API.setElements([selectedElement, text]);
+        API.setSelectedElements([selectedElement]);
+
+        Keyboard.keyPress(KEYS.ENTER);
+        const editor = await getTextEditor();
+
+        await exitTextEditorAndAssertSelection({
+          editor,
+          nextText: "",
+          selectedIds: [selectedElement.id],
+        });
+
+        expect(selectedElement.boundElements).toStrictEqual([]);
+        expect(h.elements[1]).toEqual(
+          expect.objectContaining({
+            isDeleted: true,
+          }),
+        );
+      },
+    );
+
     it("should restore original container height and clear cache once text is unbind", async () => {
       const container = API.createElement({
         type: "rectangle",
@@ -1511,7 +1694,7 @@ describe("textWysiwyg", () => {
           version: 2,
           width: 610,
           x: 15,
-          y: 25,
+          y: 12.5,
         }),
       );
       expect(h.elements[2] as ExcalidrawTextElement).toEqual(

packages/excalidraw/wysiwyg/textWysiwyg.tsx

@@ -10,7 +10,9 @@ import {
   isTestEnv,
   MIME_TYPES,
   applyDarkModeFilter,
+  isRTL,
 } from "@excalidraw/common";
+import { pointFrom, pointRotateRads, type Radians } from "@excalidraw/math";
 
 import {
   getTextFromElements,
@@ -33,8 +35,11 @@ import {
   getBoundTextElement,
 } from "@excalidraw/element";
 import { getTextWidth } from "@excalidraw/element";
+import { getLineHeightInPx } from "@excalidraw/element";
+import { getLineWidth } from "@excalidraw/element";
 import { normalizeText } from "@excalidraw/element";
 import { wrapText } from "@excalidraw/element";
+import { getWrappedTextLines } from "@excalidraw/element";
 import {
   isArrowElement,
   isBoundToContainer,
@@ -91,6 +96,103 @@ const getTransform = (
   return `translate(${translateX}px, ${translateY}px) scale(${zoom.value}) rotate(${degree}deg)`;
 };
 
+const getLineDirection = (text: string, offset: number) => {
+  const hardLineStart = text.lastIndexOf("\n", Math.max(0, offset - 1)) + 1;
+  const hardLineEnd = text.indexOf("\n", offset);
+  const hardLineText = text.slice(
+    hardLineStart,
+    hardLineEnd === -1 ? text.length : hardLineEnd,
+  );
+
+  return isRTL(hardLineText) ? "rtl" : "ltr";
+};
+
+const getCaretBoundaryOffsets = (text: string) => {
+  const offsets = [0];
+  let offset = 0;
+
+  for (const char of Array.from(text)) {
+    offset += char.length;
+    offsets.push(offset);
+  }
+
+  return offsets;
+};
+
+const getLineCaretOffsetFromNativeLayout = ({
+  text,
+  font,
+  lineHeightPx,
+  direction,
+  targetX,
+}: {
+  text: string;
+  font: ReturnType<typeof getFontString>;
+  lineHeightPx: number;
+  direction: "ltr" | "rtl";
+  targetX: number;
+}) => {
+  if (!text || !document.body || typeof document.createRange !== "function") {
+    return null;
+  }
+
+  const offsets = getCaretBoundaryOffsets(text);
+  const mirror = document.createElement("div");
+  const textNode = document.createTextNode(text);
+  const range = document.createRange();
+  const positions: number[] = [];
+
+  mirror.dir = direction;
+  Object.assign(mirror.style, {
+    position: "fixed",
+    top: "0",
+    left: "0",
+    margin: 0,
+    padding: 0,
+    border: 0,
+    opacity: "0",
+    pointerEvents: "none",
+    whiteSpace: "pre",
+    font,
+    lineHeight: `${lineHeightPx}px`,
+  });
+  mirror.append(textNode);
+  document.body.append(mirror);
+
+  try {
+    for (const offset of offsets) {
+      range.setStart(textNode, offset);
+      range.setEnd(textNode, offset);
+      const caretRect = range.getBoundingClientRect();
+
+      if (!Number.isFinite(caretRect.left)) {
+        return null;
+      }
+
+      positions.push(caretRect.left);
+    }
+  } catch {
+    return null;
+  } finally {
+    mirror.remove();
+  }
+
+  const leftEdge = Math.min(...positions);
+  let closestOffset = offsets[0];
+  let closestDistance = Infinity;
+
+  for (let index = 0; index < offsets.length; index++) {
+    const distance = Math.abs(positions[index] - leftEdge - targetX);
+
+    if (distance < closestDistance) {
+      closestDistance = distance;
+      closestOffset = offsets[index];
+    }
+  }
+
+  return closestOffset;
+};
+
 type SubmitHandler = () => void;
 
 export const textWysiwyg = ({
@@ -103,6 +205,7 @@ export const textWysiwyg = ({
   excalidrawContainer,
   app,
   autoSelect = true,
+  initialCaretSceneCoords = null,
 }: {
   id: ExcalidrawElement["id"];
   /**
@@ -119,7 +222,19 @@ export const textWysiwyg = ({
   excalidrawContainer: HTMLDivElement | null;
   app: App;
   autoSelect?: boolean;
+  initialCaretSceneCoords?: { x: number; y: number } | null;
 }): SubmitHandler => {
+  let currentTextLayout: {
+    angle: Radians;
+    font: ReturnType<typeof getFontString>;
+    height: number;
+    lineHeightPx: number;
+    textAlign: ExcalidrawTextElement["textAlign"];
+    width: number;
+    x: number;
+    y: number;
+  } | null = null;
+
   const textPropertiesUpdated = (
     updatedTextElement: ExcalidrawTextElement,
     editable: HTMLTextAreaElement,
@@ -254,6 +369,7 @@ export const textWysiwyg = ({
       height *= 1.05;
 
       const font = getFontString(updatedTextElement);
+      const angle = getTextElementAngle(updatedTextElement, container);
 
       // Make sure text editor height doesn't go beyond viewport
       const editorMaxHeight =
@@ -269,7 +385,7 @@ export const textWysiwyg = ({
         transform: getTransform(
           width,
           height,
-          getTextElementAngle(updatedTextElement, container),
+          angle,
           appState,
           maxWidth,
           editorMaxHeight,
@@ -283,6 +399,19 @@ export const textWysiwyg = ({
         opacity: updatedTextElement.opacity / 100,
         maxHeight: `${editorMaxHeight}px`,
       });
+      currentTextLayout = {
+        angle: angle as Radians,
+        font,
+        height: updatedTextElement.height,
+        lineHeightPx: getLineHeightInPx(
+          updatedTextElement.fontSize,
+          updatedTextElement.lineHeight,
+        ),
+        textAlign,
+        width: updatedTextElement.width,
+        x: coordX,
+        y: coordY,
+      };
       editable.scrollTop = 0;
       // For some reason updating font attribute doesn't set font family
       // hence updating font family explicitly for test environment
@@ -333,6 +462,71 @@ export const textWysiwyg = ({
   editable.value = element.originalText;
   updateWysiwygStyle();
 
+  const getCaretIndexFromInitialSceneCoords = () => {
+    if (!initialCaretSceneCoords || !currentTextLayout) {
+      return null;
+    }
+
+    const layout = currentTextLayout;
+    const center = pointFrom(
+      layout.x + layout.width / 2,
+      layout.y + layout.height / 2,
+    );
+    const [unrotatedX, unrotatedY] = pointRotateRads(
+      pointFrom(initialCaretSceneCoords.x, initialCaretSceneCoords.y),
+      center,
+      -layout.angle as Radians,
+    );
+    const localX = unrotatedX - layout.x;
+    const localY = unrotatedY - layout.y;
+    const lines = getWrappedTextLines(
+      editable.value,
+      layout.font,
+      whiteSpace === "pre-wrap" ? layout.width : Infinity,
+    );
+    const lineIndex = Math.max(
+      0,
+      Math.min(lines.length - 1, Math.floor(localY / layout.lineHeightPx)),
+    );
+    const line = lines[lineIndex];
+    const direction = getLineDirection(editable.value, line.start);
+    const lineWidth = getLineWidth(line.text, layout.font);
+    const lineStartX =
+      layout.textAlign === "center"
+        ? (layout.width - lineWidth) / 2
+        : layout.textAlign === "right"
+        ? layout.width - lineWidth
+        : 0;
+    const relativeX = localX - lineStartX;
+
+    if (!line.text) {
+      return line.start;
+    }
+
+    const lineCaretOffset = getLineCaretOffsetFromNativeLayout({
+      text: line.text,
+      font: layout.font,
+      lineHeightPx: layout.lineHeightPx,
+      direction,
+      targetX: relativeX,
+    });
+
+    return line.start + (lineCaretOffset || 0);
+  };
+
+  let pendingInitialSelection = (() => {
+    const caretIndex = getCaretIndexFromInitialSceneCoords();
+
+    if (caretIndex === null) {
+      return null;
+    }
+
+    return {
+      start: caretIndex,
+      end: caretIndex,
+    };
+  })();
+
   if (onChange) {
     editable.onpaste = async (event) => {
       // we need to synchronously get the MIME types so we can preventDefault()
@@ -696,6 +890,13 @@ export const textWysiwyg = ({
       // Otherwise, re-enable submit on blur and refocus the editor.
       editable.onblur = handleSubmit;
       editable.focus();
+      if (pendingInitialSelection) {
+        editable.setSelectionRange(
+          pendingInitialSelection.start,
+          pendingInitialSelection.end,
+        );
+        pendingInitialSelection = null;
+      }
     });
   };
 
@@ -786,7 +987,7 @@ export const textWysiwyg = ({
 
   let isDestroyed = false;
 
-  if (autoSelect) {
+  if (autoSelect && !pendingInitialSelection) {
     // select on init (focusing is done separately inside the bindBlurEvent()
     // because we need it to happen *after* the blur event from `pointerdown`)
     editable.select();

packages/math/src/point.ts

@@ -123,10 +123,15 @@ export function pointsEqual<Point extends GlobalPoint | LocalPoint>(
  * @returns The rotated point
  */
 export function pointRotateRads<Point extends GlobalPoint | LocalPoint>(
-  [x, y]: Point,
+  point: Point,
-  [cx, cy]: Point,
+  center: Point,
   angle: Radians,
 ): Point {
+  if (!angle) {
+    return point;
+  }
+  const [x, y] = point;
+  const [cx, cy] = center;
   return pointFrom(
     (x - cx) * Math.cos(angle) - (y - cy) * Math.sin(angle) + cx,
     (x - cx) * Math.sin(angle) + (y - cy) * Math.cos(angle) + cy,

packages/math/src/segment.ts

@@ -40,7 +40,7 @@ export const isLineSegment = <Point extends GlobalPoint | LocalPoint>(
   Array.isArray(segment) &&
   segment.length === 2 &&
   isPoint(segment[0]) &&
-  isPoint(segment[0]);
+  isPoint(segment[1]);
 
 /**
  * Return the coordinates resulting from rotating the given line about an origin by an angle in radians

packages/math/tests/segment.test.ts

@@ -1,5 +1,9 @@
 import { pointFrom } from "../src/point";
-import { lineSegment, lineSegmentIntersectionPoints } from "../src/segment";
+import {
+  lineSegment,
+  lineSegmentIntersectionPoints,
+  isLineSegment,
+} from "../src/segment";
 
 describe("line-segment intersections", () => {
   it("should correctly detect intersection", () => {
@@ -19,3 +23,23 @@ describe("line-segment intersections", () => {
     ).toEqual(null);
   });
 });
+describe("isLineSegment validation", () => {
+  it("should return true for a valid segment", () => {
+    expect(
+      isLineSegment([
+        [0, 0],
+        [1, 1],
+      ]),
+    ).toBe(true);
+  });
+
+  it("should return false if second element is not a point", () => {
+    const invalidSegment = [[0, 0], "not-a-point"] as any;
+
+    expect(isLineSegment(invalidSegment)).toBe(false);
+  });
+
+  it("should return false for wrong length", () => {
+    expect(isLineSegment([[0, 0]])).toBe(false);
+  });
+});

yarn.lock

@@ -1531,10 +1531,10 @@
   resolved "https://registry.yarnpkg.com/@excalidraw/markdown-to-text/-/markdown-to-text-0.1.2.tgz#1703705e7da608cf478f17bfe96fb295f55a23eb"
   integrity sha512-1nDXBNAojfi3oSFwJswKREkFm5wrSjqay81QlyRv2pkITG/XYB5v+oChENVBQLcxQwX4IUATWvXM5BcaNhPiIg==
 
-"@excalidraw/mermaid-to-excalidraw@2.0.0-rc4":
+"@excalidraw/mermaid-to-excalidraw@2.2.2":
-  version "2.0.0-rc4"
+  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/@excalidraw/mermaid-to-excalidraw/-/mermaid-to-excalidraw-2.0.0-rc4.tgz#9d38568de8e403fefb6a162efa71e024ea1f7e03"
+  resolved "https://registry.yarnpkg.com/@excalidraw/mermaid-to-excalidraw/-/mermaid-to-excalidraw-2.2.2.tgz#ee6b597a0d95b9a76f7ae41ce0e3733a9b96e4a0"
-  integrity sha512-92efu7VTYF6appGKgbDJAZEM/YXICpYPYOfl+j1E9SVilIFCJEAg7xH2lt/c44WFtffG+rWKrYwf9KUrPYy1Qw==
+  integrity sha512-5VKQq5CdRocC82vOIUpQ5ufJOVV9FpBTdHGA+ULqazeIVV+cr299877omQCibsdS3Bpitz2fsnTwnIXEmLVDSg==
   dependencies:
     "@excalidraw/markdown-to-text" "0.1.2"
     "@mermaid-js/parser" "^0.6.3"