fix ts

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

excalidraw-app/components/DebugCanvas.tsx

@@ -3,24 +3,41 @@ import {
   CloseIcon,
   TrashIcon,
 } from "@excalidraw/excalidraw/components/icons";
+import { useExcalidrawAPI } from "@excalidraw/excalidraw/index";
 import {
   bootstrapCanvas,
+  fillCircle,
   getNormalizedCanvasDimensions,
 } from "@excalidraw/excalidraw/renderer/helpers";
 import { type AppState } from "@excalidraw/excalidraw/types";
-import { arrayToMap, throttleRAF } from "@excalidraw/common";
+import {
-import { useCallback } from "react";
+  arrayToMap,
+  sceneCoordsToViewportCoords,
+  throttleRAF,
+  viewportCoordsToSceneCoords,
+} from "@excalidraw/common";
+import { useCallback, useEffect, useRef, useState } from "react";
 
 import {
+  CaptureUpdateAction,
+  clearSimpleArrowTangentOverride,
   getGlobalFixedPointForBindableElement,
+  getElementAbsoluteCoords,
+  getSimpleArrowCurveDebugData,
   isArrowElement,
   isBindableElement,
+  setSimpleArrowTangentOverride,
+  ShapeCache,
 } from "@excalidraw/element";
 
 import {
   isLineSegment,
+  pointFrom,
+  pointRotateRads,
   type GlobalPoint,
+  type LocalPoint,
   type LineSegment,
+  type Radians,
 } from "@excalidraw/math";
 import { isCurve } from "@excalidraw/math/curve";
 
@@ -36,11 +53,260 @@ import type {
   ExcalidrawArrowElement,
   ExcalidrawBindableElement,
   FixedPointBinding,
+  Ordered,
   OrderedExcalidrawElement,
 } from "@excalidraw/element/types";
+import type { SimpleArrowCurveDebugData } from "@excalidraw/element";
 
 import { STORAGE_KEYS } from "../app_constants";
 
+type DebugCanvasOverlayState = Pick<
+  AppState,
+  | "width"
+  | "height"
+  | "zoom"
+  | "scrollX"
+  | "scrollY"
+  | "offsetLeft"
+  | "offsetTop"
+  | "selectedElementIds"
+>;
+
+type SimpleArrowHandleDirection = "incoming" | "outgoing";
+
+type SimpleArrowHandleDescriptor = {
+  key: string;
+  elementId: string;
+  pointIndex: number;
+  direction: SimpleArrowHandleDirection;
+  point: GlobalPoint;
+  handle: GlobalPoint;
+  isOverridden: boolean;
+  title: string;
+};
+
+type SelectedSimpleArrowDebugState = {
+  element: ExcalidrawArrowElement;
+  debugData: SimpleArrowCurveDebugData<GlobalPoint>;
+  handles: SimpleArrowHandleDescriptor[];
+};
+
+const areSimpleArrowTangentHandlesEnabled = () =>
+  window.EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENTS !== false;
+
+const pickOverlayState = (appState: AppState): DebugCanvasOverlayState => ({
+  width: appState.width,
+  height: appState.height,
+  zoom: appState.zoom,
+  scrollX: appState.scrollX,
+  scrollY: appState.scrollY,
+  offsetLeft: appState.offsetLeft,
+  offsetTop: appState.offsetTop,
+  selectedElementIds: appState.selectedElementIds,
+});
+
+const getSimpleArrowTransform = (
+  element: ExcalidrawArrowElement,
+  elementsMap: ElementsMap,
+) => {
+  const [, , , , cx, cy] = getElementAbsoluteCoords(element, elementsMap);
+  const center = pointFrom<GlobalPoint>(cx, cy);
+
+  return {
+    pointToGlobal: (point: LocalPoint): GlobalPoint => {
+      const rotated = pointRotateRads(
+        pointFrom<GlobalPoint>(element.x + point[0], element.y + point[1]),
+        center,
+        element.angle,
+      );
+
+      return pointFrom<GlobalPoint>(rotated[0], rotated[1]);
+    },
+    vectorToGlobal: (vector: [number, number]): [number, number] => {
+      const rotated = pointRotateRads(
+        pointFrom<GlobalPoint>(vector[0], vector[1]),
+        pointFrom<GlobalPoint>(0, 0),
+        element.angle,
+      );
+
+      return [rotated[0], rotated[1]];
+    },
+    vectorToLocal: (vector: [number, number]): [number, number] => {
+      const rotated = pointRotateRads(
+        pointFrom<GlobalPoint>(vector[0], vector[1]),
+        pointFrom<GlobalPoint>(0, 0),
+        -element.angle as Radians,
+      );
+
+      return [rotated[0], rotated[1]];
+    },
+  };
+};
+
+const getSimpleArrowDebugStateForElement = (
+  elements: readonly OrderedExcalidrawElement[],
+  elementId: string,
+): SelectedSimpleArrowDebugState | null => {
+  const element = elements.find(
+    (candidate): candidate is Ordered<ExcalidrawArrowElement> =>
+      candidate.id === elementId &&
+      !candidate.isDeleted &&
+      isArrowElement(candidate) &&
+      !!candidate.roundness &&
+      !candidate.elbowed,
+  );
+
+  if (!element) {
+    return null;
+  }
+
+  const elementsMap = arrayToMap(elements);
+  const transform = getSimpleArrowTransform(element, elementsMap);
+  const localDebugData = getSimpleArrowCurveDebugData(element.points, 0.5, {
+    elementId: element.id,
+  });
+  const debugData: SimpleArrowCurveDebugData<GlobalPoint> = {
+    ...localDebugData,
+    tangents: localDebugData.tangents.map((tangent) => ({
+      ...tangent,
+      point: transform.pointToGlobal(tangent.point as LocalPoint),
+      base: transform.vectorToGlobal(tangent.base),
+      autoScaled: transform.vectorToGlobal(tangent.autoScaled),
+      scaled: transform.vectorToGlobal(tangent.scaled),
+    })),
+    segments: localDebugData.segments.map((segment) => ({
+      ...segment,
+      start: transform.pointToGlobal(segment.start as LocalPoint),
+      end: transform.pointToGlobal(segment.end as LocalPoint),
+      baseCp1: transform.pointToGlobal(segment.baseCp1 as LocalPoint),
+      baseCp2: transform.pointToGlobal(segment.baseCp2 as LocalPoint),
+      cp1: transform.pointToGlobal(segment.cp1 as LocalPoint),
+      cp2: transform.pointToGlobal(segment.cp2 as LocalPoint),
+    })),
+  };
+  const handles = debugData.tangents.flatMap((tangent, pointIndex) => {
+    const descriptors: SimpleArrowHandleDescriptor[] = [];
+    const lengthRatio =
+      tangent.normalized.finalLengthVsMinNeighbor === null
+        ? "n/a"
+        : tangent.normalized.finalLengthVsMinNeighbor.toFixed(3);
+    const angleDelta = tangent.normalized.angleDelta.toFixed(3);
+    const title = `point ${pointIndex} · len/min ${lengthRatio} · dAngle ${angleDelta} · dblclick resets`;
+
+    if (pointIndex < debugData.tangents.length - 1) {
+      descriptors.push({
+        key: `${element.id}:${pointIndex}:out`,
+        elementId: element.id,
+        pointIndex,
+        direction: "outgoing",
+        point: tangent.point,
+        handle: pointFrom<GlobalPoint>(
+          tangent.point[0] + tangent.scaled[0] / 3,
+          tangent.point[1] + tangent.scaled[1] / 3,
+        ),
+        isOverridden: tangent.isOverridden,
+        title,
+      });
+    }
+
+    if (pointIndex > 0) {
+      descriptors.push({
+        key: `${element.id}:${pointIndex}:in`,
+        elementId: element.id,
+        pointIndex,
+        direction: "incoming",
+        point: tangent.point,
+        handle: pointFrom<GlobalPoint>(
+          tangent.point[0] - tangent.scaled[0] / 3,
+          tangent.point[1] - tangent.scaled[1] / 3,
+        ),
+        isOverridden: tangent.isOverridden,
+        title,
+      });
+    }
+
+    return descriptors;
+  });
+
+  return {
+    element,
+    debugData,
+    handles,
+  };
+};
+
+const getSelectedSimpleArrowDebugState = (
+  elements: readonly OrderedExcalidrawElement[],
+  appState: Pick<AppState, "selectedElementIds">,
+) => {
+  const selectedIds = Object.keys(appState.selectedElementIds);
+
+  if (selectedIds.length !== 1) {
+    return null;
+  }
+
+  return getSimpleArrowDebugStateForElement(elements, selectedIds[0]);
+};
+
+const renderSelectedSimpleArrowTangentOverlay = (
+  context: CanvasRenderingContext2D,
+  zoom: number,
+  debugState: SelectedSimpleArrowDebugState,
+) => {
+  context.save();
+  context.lineWidth = 1;
+
+  context.setLineDash([6, 4]);
+  context.strokeStyle = "rgba(134, 142, 150, 0.75)";
+
+  for (const segment of debugState.debugData.segments) {
+    context.beginPath();
+    context.moveTo(segment.start[0] * zoom, segment.start[1] * zoom);
+    context.lineTo(segment.baseCp1[0] * zoom, segment.baseCp1[1] * zoom);
+    context.lineTo(segment.baseCp2[0] * zoom, segment.baseCp2[1] * zoom);
+    context.lineTo(segment.end[0] * zoom, segment.end[1] * zoom);
+    context.stroke();
+  }
+
+  context.setLineDash([]);
+
+  for (const segment of debugState.debugData.segments) {
+    context.strokeStyle = segment.overshootsBaseline
+      ? "rgba(245, 159, 0, 0.9)"
+      : "rgba(94, 90, 216, 0.85)";
+
+    context.beginPath();
+    context.moveTo(segment.start[0] * zoom, segment.start[1] * zoom);
+    context.lineTo(segment.cp1[0] * zoom, segment.cp1[1] * zoom);
+    context.lineTo(segment.cp2[0] * zoom, segment.cp2[1] * zoom);
+    context.lineTo(segment.end[0] * zoom, segment.end[1] * zoom);
+    context.stroke();
+  }
+
+  for (const tangent of debugState.debugData.tangents) {
+    if (!tangent.isAdjusted) {
+      continue;
+    }
+
+    context.strokeStyle = tangent.isOverridden
+      ? "rgba(230, 73, 128, 0.95)"
+      : "rgba(201, 42, 42, 0.85)";
+    context.fillStyle = tangent.isOverridden
+      ? "rgba(230, 73, 128, 0.95)"
+      : "rgba(201, 42, 42, 0.95)";
+
+    fillCircle(
+      context,
+      tangent.point[0] * zoom,
+      tangent.point[1] * zoom,
+      3,
+      true,
+    );
+  }
+
+  context.restore();
+};
+
 const renderLine = (
   context: CanvasRenderingContext2D,
   zoom: number,
@@ -359,6 +625,13 @@ const _debugRenderer = (
   renderOrigin(context, appState.zoom.value);
   renderBindings(context, elements, appState.zoom.value);
 
+  const selectedSimpleArrowDebugState = areSimpleArrowTangentHandlesEnabled()
+    ? getSelectedSimpleArrowDebugState(elements, appState)
+    : null;
+
+  window.EXCALIDRAW_DEBUG_SELECTED_LINEAR_ARROW =
+    selectedSimpleArrowDebugState?.debugData;
+
   if (
     window.visualDebug?.currentFrame &&
     window.visualDebug?.data &&
@@ -375,6 +648,14 @@ const _debugRenderer = (
     });
   }
 
+  if (selectedSimpleArrowDebugState) {
+    renderSelectedSimpleArrowTangentOverlay(
+      context,
+      appState.zoom.value,
+      selectedSimpleArrowDebugState,
+    );
+  }
+
   if (window.visualDebug) {
     window.visualDebug!.data =
       window.visualDebug?.data.map((frame) =>
@@ -542,23 +823,324 @@ interface DebugCanvasProps {
 
 const DebugCanvas = React.forwardRef<HTMLCanvasElement, DebugCanvasProps>(
   ({ appState, scale }, ref) => {
-    const { width, height } = appState;
+    const excalidrawAPI = useExcalidrawAPI();
+    const [overlayState, setOverlayState] = useState<DebugCanvasOverlayState>(
+      () => pickOverlayState(appState),
+    );
+    const [selectedSimpleArrowDebugState, setSelectedSimpleArrowDebugState] =
+      useState<SelectedSimpleArrowDebugState | null>(null);
+    const dragStateRef = useRef<{
+      elementId: string;
+      pointIndex: number;
+      direction: SimpleArrowHandleDirection;
+    } | null>(null);
+
+    const syncSelectedSimpleArrowDebugState = useCallback(
+      (
+        nextAppState: AppState,
+        nextElements?: readonly OrderedExcalidrawElement[],
+      ) => {
+        if (!excalidrawAPI || excalidrawAPI.isDestroyed) {
+          return;
+        }
+
+        const elements =
+          nextElements ??
+          (excalidrawAPI.getSceneElements() as OrderedExcalidrawElement[]);
+
+        setOverlayState(pickOverlayState(nextAppState));
+
+        const nextDebugState = areSimpleArrowTangentHandlesEnabled()
+          ? getSelectedSimpleArrowDebugState(elements, nextAppState)
+          : null;
+
+        window.EXCALIDRAW_DEBUG_SELECTED_LINEAR_ARROW =
+          nextDebugState?.debugData;
+        setSelectedSimpleArrowDebugState(nextDebugState);
+      },
+      [excalidrawAPI],
+    );
+
+    useEffect(() => {
+      if (!excalidrawAPI || excalidrawAPI.isDestroyed) {
+        return;
+      }
+
+      syncSelectedSimpleArrowDebugState(excalidrawAPI.getAppState());
+
+      const unsubscribeChange = excalidrawAPI.onChange(
+        (elements, nextAppState) =>
+          syncSelectedSimpleArrowDebugState(
+            nextAppState,
+            elements as readonly OrderedExcalidrawElement[],
+          ),
+      );
+      const unsubscribeState = excalidrawAPI.onStateChange(
+        [
+          "selectedElementIds",
+          "zoom",
+          "scrollX",
+          "scrollY",
+          "offsetLeft",
+          "offsetTop",
+          "width",
+          "height",
+        ],
+        (_value, nextAppState) =>
+          syncSelectedSimpleArrowDebugState(nextAppState),
+      );
+
+      return () => {
+        unsubscribeChange();
+        unsubscribeState();
+      };
+    }, [excalidrawAPI, syncSelectedSimpleArrowDebugState]);
+
+    const rerenderSceneForSimpleArrowOverride = useCallback(() => {
+      if (!excalidrawAPI || excalidrawAPI.isDestroyed) {
+        return;
+      }
+
+      excalidrawAPI.updateScene({
+        elements: excalidrawAPI.getSceneElementsIncludingDeleted(),
+        captureUpdate: CaptureUpdateAction.NEVER,
+      });
+    }, [excalidrawAPI]);
+
+    const commitOverrideForHandle = useCallback(
+      (
+        handle: Pick<
+          SimpleArrowHandleDescriptor,
+          "elementId" | "pointIndex" | "direction"
+        >,
+        clientX: number,
+        clientY: number,
+      ) => {
+        if (!excalidrawAPI || excalidrawAPI.isDestroyed) {
+          return;
+        }
+
+        const nextAppState = excalidrawAPI.getAppState();
+        const nextElements =
+          excalidrawAPI.getSceneElements() as OrderedExcalidrawElement[];
+        const debugState = getSimpleArrowDebugStateForElement(
+          nextElements,
+          handle.elementId,
+        );
+
+        if (!debugState) {
+          return;
+        }
+
+        const scenePoint = viewportCoordsToSceneCoords(
+          { clientX, clientY },
+          nextAppState,
+        );
+        const tangent =
+          handle.direction === "outgoing"
+            ? ([
+                (scenePoint.x -
+                  debugState.debugData.tangents[handle.pointIndex].point[0]) *
+                  3,
+                (scenePoint.y -
+                  debugState.debugData.tangents[handle.pointIndex].point[1]) *
+                  3,
+              ] as [number, number])
+            : ([
+                (debugState.debugData.tangents[handle.pointIndex].point[0] -
+                  scenePoint.x) *
+                  3,
+                (debugState.debugData.tangents[handle.pointIndex].point[1] -
+                  scenePoint.y) *
+                  3,
+              ] as [number, number]);
+        const localTangent = getSimpleArrowTransform(
+          debugState.element,
+          arrayToMap(nextElements),
+        ).vectorToLocal(tangent);
+
+        setSimpleArrowTangentOverride(
+          debugState.element.id,
+          handle.pointIndex,
+          localTangent,
+        );
+        ShapeCache.delete(debugState.element);
+        rerenderSceneForSimpleArrowOverride();
+        syncSelectedSimpleArrowDebugState(nextAppState, nextElements);
+      },
+      [
+        excalidrawAPI,
+        rerenderSceneForSimpleArrowOverride,
+        syncSelectedSimpleArrowDebugState,
+      ],
+    );
+
+    const onPointerMove = useCallback(
+      (event: PointerEvent) => {
+        if (!dragStateRef.current) {
+          return;
+        }
+
+        event.preventDefault();
+        commitOverrideForHandle(
+          dragStateRef.current,
+          event.clientX,
+          event.clientY,
+        );
+      },
+      [commitOverrideForHandle],
+    );
+
+    const onPointerUp = useCallback(
+      (event: PointerEvent) => {
+        if (!dragStateRef.current) {
+          return;
+        }
+
+        event.preventDefault();
+        dragStateRef.current = null;
+        window.removeEventListener("pointermove", onPointerMove);
+        window.removeEventListener("pointerup", onPointerUp);
+        window.removeEventListener("pointercancel", onPointerUp);
+      },
+      [onPointerMove],
+    );
+
+    useEffect(() => {
+      return () => {
+        dragStateRef.current = null;
+        window.removeEventListener("pointermove", onPointerMove);
+        window.removeEventListener("pointerup", onPointerUp);
+        window.removeEventListener("pointercancel", onPointerUp);
+      };
+    }, [onPointerMove, onPointerUp]);
+
+    const handlePointerDown = useCallback(
+      (
+        handle: SimpleArrowHandleDescriptor,
+        event: React.PointerEvent<HTMLDivElement>,
+      ) => {
+        event.preventDefault();
+        event.stopPropagation();
+
+        dragStateRef.current = {
+          elementId: handle.elementId,
+          pointIndex: handle.pointIndex,
+          direction: handle.direction,
+        };
+
+        window.addEventListener("pointermove", onPointerMove, {
+          passive: false,
+        });
+        window.addEventListener("pointerup", onPointerUp, {
+          passive: false,
+        });
+        window.addEventListener("pointercancel", onPointerUp, {
+          passive: false,
+        });
+
+        commitOverrideForHandle(handle, event.clientX, event.clientY);
+      },
+      [commitOverrideForHandle, onPointerMove, onPointerUp],
+    );
+
+    const resetHandleOverride = useCallback(
+      (
+        handle: SimpleArrowHandleDescriptor,
+        event: React.MouseEvent<HTMLDivElement>,
+      ) => {
+        event.preventDefault();
+        event.stopPropagation();
+
+        if (!excalidrawAPI || excalidrawAPI.isDestroyed) {
+          return;
+        }
+
+        clearSimpleArrowTangentOverride(handle.elementId, handle.pointIndex);
+
+        const nextElements =
+          excalidrawAPI.getSceneElements() as OrderedExcalidrawElement[];
+        const element = nextElements.find(
+          (candidate): candidate is Ordered<ExcalidrawArrowElement> =>
+            candidate.id === handle.elementId &&
+            !candidate.isDeleted &&
+            isArrowElement(candidate),
+        );
+
+        if (element) {
+          ShapeCache.delete(element);
+          rerenderSceneForSimpleArrowOverride();
+        }
+
+        syncSelectedSimpleArrowDebugState(
+          excalidrawAPI.getAppState(),
+          nextElements,
+        );
+      },
+      [
+        excalidrawAPI,
+        rerenderSceneForSimpleArrowOverride,
+        syncSelectedSimpleArrowDebugState,
+      ],
+    );
+
+    const { width, height } = overlayState;
 
     return (
-      <canvas
+      <>
-        style={{
+        <canvas
-          width,
+          style={{
-          height,
+            width,
-          position: "absolute",
+            height,
-          zIndex: 2,
+            position: "absolute",
-          pointerEvents: "none",
+            inset: 0,
-        }}
+            zIndex: 2,
-        width={width * scale}
+            pointerEvents: "none",
-        height={height * scale}
+          }}
-        ref={ref}
+          width={width * scale}
-      >
+          height={height * scale}
-        Debug Canvas
+          ref={ref}
-      </canvas>
+        >
+          Debug Canvas
+        </canvas>
+        {selectedSimpleArrowDebugState?.handles.map((handle) => {
+          const { x, y } = sceneCoordsToViewportCoords(
+            {
+              sceneX: handle.handle[0],
+              sceneY: handle.handle[1],
+            },
+            overlayState,
+          );
+
+          return (
+            <div
+              key={handle.key}
+              title={handle.title}
+              onPointerDown={(event) => handlePointerDown(handle, event)}
+              onDoubleClick={(event) => resetHandleOverride(handle, event)}
+              style={{
+                position: "absolute",
+                left: x - overlayState.offsetLeft,
+                top: y - overlayState.offsetTop,
+                width: 12,
+                height: 12,
+                zIndex: 3,
+                borderRadius: handle.direction === "outgoing" ? "999px" : 3,
+                transform: "translate(-50%, -50%)",
+                background: handle.isOverridden
+                  ? "rgba(230, 73, 128, 0.95)"
+                  : handle.direction === "outgoing"
+                  ? "rgba(94, 90, 216, 0.95)"
+                  : "rgba(245, 159, 0, 0.95)",
+                border: "2px solid rgba(255,255,255,0.95)",
+                boxShadow: "0 0 0 1px rgba(0, 0, 0, 0.18)",
+                pointerEvents: "auto",
+                cursor: "grab",
+              }}
+            />
+          );
+        })}
+      </>
     );
   },
 );

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

@@ -1822,7 +1822,7 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "versionNonce": Any<Number>,
   "verticalAlign": "middle",
   "width": 120,
-  "x": 187.75450000000004,
+  "x": 187.7545,
   "y": 44.5,
 }
 `;

packages/element/src/bounds.ts

@@ -789,27 +789,41 @@ export const getArrowheadPoints = (
     p0 = pointFrom(prevOp.data[4], prevOp.data[5]);
   }
 
-  // B(t) = p0 * (1-t)^3 + 3p1 * t * (1-t)^2 + 3p2 * t^2 * (1-t) + p3 * t^3
+  // We know the last point of the arrow (or the first, if start arrowhead).
-  const equation = (t: number, idx: number) =>
-    Math.pow(1 - t, 3) * p3[idx] +
-    3 * t * Math.pow(1 - t, 2) * p2[idx] +
-    3 * Math.pow(t, 2) * (1 - t) * p1[idx] +
-    p0[idx] * Math.pow(t, 3);
-
-  // Ee know the last point of the arrow (or the first, if start arrowhead).
   const [x2, y2] = position === "start" ? p0 : p3;
 
-  // By using cubic bezier equation (B(t)) and the given parameters,
+  // Use the analytic tangent at the Bézier endpoint for a precise arrowhead
-  // we calculate a point that is closer to the last point.
+  // direction. For a cubic Bézier B(t) with control points p0p3:
-  // The value 0.3 is chosen arbitrarily and it works best for all
+  //   B'(1): (p3 − p2) tangent at the end
-  // the tested cases.
+  //   B'(0): (p1 − p0) for start arrowhead, arrow points away: (p0 − p1)
-  const [x1, y1] = [equation(0.3, 0), equation(0.3, 1)];
+  let dx: number;
-
+  let dy: number;
-  // Find the normalized direction vector based on the
+  if (position === "end") {
-  // previously calculated points.
+    dx = p3[0] - p2[0];
-  const distance = Math.hypot(x2 - x1, y2 - y1);
+    dy = p3[1] - p2[1];
-  const nx = (x2 - x1) / distance;
+    if (Math.hypot(dx, dy) < 1e-6) {
-  const ny = (y2 - y1) / distance;
+      dx = p3[0] - p1[0];
+      dy = p3[1] - p1[1];
+    }
+    if (Math.hypot(dx, dy) < 1e-6) {
+      dx = p3[0] - p0[0];
+      dy = p3[1] - p0[1];
+    }
+  } else {
+    dx = p0[0] - p1[0];
+    dy = p0[1] - p1[1];
+    if (Math.hypot(dx, dy) < 1e-6) {
+      dx = p0[0] - p2[0];
+      dy = p0[1] - p2[1];
+    }
+    if (Math.hypot(dx, dy) < 1e-6) {
+      dx = p0[0] - p3[0];
+      dy = p0[1] - p3[1];
+    }
+  }
+  const distance = Math.hypot(dx, dy);
+  const nx = dx / distance;
+  const ny = dy / distance;
 
   const size = getArrowheadSize(arrowhead);
 

packages/element/src/linearElementEditor.ts

@@ -784,9 +784,20 @@ export class LinearElementEditor {
       elementsMap,
     );
 
+    // For curved (non-elbow) arrows the quadratic spline produces N-2 arcs
+    // for N anchor points. Cap the loop to the actual segment count so we
+    // don't request a midpoint for a segment that doesn't exist.
+    const [lines, segCurves] = deconstructLinearOrFreeDrawElement(element);
+    const segmentCount = lines.length + segCurves.length;
+
     let index = 0;
     const midpoints: (GlobalPoint | null)[] = [];
     while (index < points.length - 1) {
+      if (segmentCount > 0 && index >= segmentCount) {
+        midpoints.push(null);
+        index++;
+        continue;
+      }
       if (
         LinearElementEditor.isSegmentTooShort(
           element,

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

@@ -634,60 +634,34 @@ export const generateLinearCollisionShape = (
         });
       }
 
-      return generator
+      // Rotate the same cubic ops used for rendering so hit-testing matches the
-        .curve(points as unknown as RoughPoint[], options)
+      // visible arrow path.
-        .sets[0].ops.slice(0, element.points.length)
+      const rotateLocal = (lx: number, ly: number): LocalPoint => {
-        .map((op, i) => {
+        const g = pointRotateRads<GlobalPoint>(
-          if (i === 0) {
+          pointFrom<GlobalPoint>(element.x + lx, element.y + ly),
-            const p = pointRotateRads<GlobalPoint>(
+          center,
-              pointFrom<GlobalPoint>(
+          element.angle,
-                element.x + op.data[0],
+        );
-                element.y + op.data[1],
+        return pointFrom<LocalPoint>(g[0] - element.x, g[1] - element.y);
-              ),
+      };
-              center,
-              element.angle,
-            );
 
-            return {
+      return generateSimpleArrowPathOps(points, 0.5, element.id).map((op) => {
-              op: "move",
+        if (op.op === "bcurveTo") {
-              data: pointFrom<LocalPoint>(p[0] - element.x, p[1] - element.y),
+          const rcp1 = rotateLocal(op.data[0], op.data[1]);
-            };
+          const rcp2 = rotateLocal(op.data[2], op.data[3]);
-          }
+          const rend = rotateLocal(op.data[4], op.data[5]);
 
           return {
             op: "bcurveTo",
-            data: [
+            data: [rcp1[0], rcp1[1], rcp2[0], rcp2[1], rend[0], rend[1]],
-              pointRotateRads(
-                pointFrom<GlobalPoint>(
-                  element.x + op.data[0],
-                  element.y + op.data[1],
-                ),
-                center,
-                element.angle,
-              ),
-              pointRotateRads(
-                pointFrom<GlobalPoint>(
-                  element.x + op.data[2],
-                  element.y + op.data[3],
-                ),
-                center,
-                element.angle,
-              ),
-              pointRotateRads(
-                pointFrom<GlobalPoint>(
-                  element.x + op.data[4],
-                  element.y + op.data[5],
-                ),
-                center,
-                element.angle,
-              ),
-            ]
-              .map((p) =>
-                pointFrom<LocalPoint>(p[0] - element.x, p[1] - element.y),
-              )
-              .flat(),
           };
-        });
+        }
+
+        return {
+          op: op.op,
+          data: rotateLocal(op.data[0], op.data[1]),
+        };
+      });
     }
     case "freedraw": {
       if (element.points.length < 2) {
@@ -929,7 +903,12 @@ const _generateElementShape = (
           ];
         }
       } else {
-        shape = [generator.curve(points as unknown as RoughPoint[], options)];
+        shape = [
+          generator.path(
+            generateSimpleArrowShape(points, 0.5, element.id),
+            generateRoughOptions(element, true, isDarkMode),
+          ),
+        ];
       }
 
       // add lines only in arrow
@@ -1013,10 +992,754 @@ const _generateElementShape = (
   }
 };
 
+type SimpleArrowPathOp =
+  | { op: "move" | "lineTo"; data: LocalPoint }
+  | { op: "bcurveTo"; data: [number, number, number, number, number, number] };
+
+const SIMPLE_ARROW_OVERSHOOT_EPSILON = 0.5;
+const SIMPLE_ARROW_SCALE_EPSILON = 1e-4;
+const SIMPLE_ARROW_SCALE_SEARCH_STEPS = 24;
+const SIMPLE_ARROW_SCALE_PASSES = 8;
+
+type SimpleArrowVector = [number, number];
+
+type SimpleArrowTangentOverrides = Record<
+  string,
+  Record<number, SimpleArrowVector>
+>;
+
+declare global {
+  interface Window {
+    EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENT_OVERRIDES?:
+      | SimpleArrowTangentOverrides
+      | undefined;
+  }
+}
+
+type SimpleArrowCurveDebugDataOptions = {
+  elementId?: string;
+};
+
+export type SimpleArrowCurveDebugData<
+  Point extends GlobalPoint | LocalPoint = LocalPoint,
+> = {
+  elementId?: string;
+  tangents: Array<{
+    point: Point;
+    base: SimpleArrowVector;
+    autoScaled: SimpleArrowVector;
+    scale: number;
+    autoScale: number;
+    scaled: SimpleArrowVector;
+    isAdjusted: boolean;
+    isOverridden: boolean;
+    normalized: {
+      baseLength: number;
+      autoLength: number;
+      finalLength: number;
+      prevSegmentLength: number | null;
+      nextSegmentLength: number | null;
+      minNeighborLength: number | null;
+      finalLengthVsMinNeighbor: number | null;
+      autoLengthVsMinNeighbor: number | null;
+      angleDelta: number;
+      turnAngle: number | null;
+    };
+  }>;
+  segments: Array<{
+    start: Point;
+    end: Point;
+    baseCp1: Point;
+    baseCp2: Point;
+    cp1: Point;
+    cp2: Point;
+    overshootsBaseline: boolean;
+    overshootsResolved: boolean;
+    metrics: {
+      chordLength: number;
+      baseStartProjection: number;
+      baseEndProjection: number;
+      finalStartProjection: number;
+      finalEndProjection: number;
+    };
+  }>;
+  inference: {
+    overriddenPointIndices: number[];
+  };
+};
+
+const SIMPLE_ARROW_ADJUSTMENT_EPSILON = 1e-3;
+
+const getSimpleArrowTangentOverrideStore = () => {
+  if (typeof window === "undefined") {
+    return null;
+  }
+
+  window.EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENT_OVERRIDES ??= {};
+  return window.EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENT_OVERRIDES;
+};
+
+export const setSimpleArrowTangentOverride = (
+  elementId: string,
+  pointIndex: number,
+  tangent: SimpleArrowVector,
+) => {
+  const store = getSimpleArrowTangentOverrideStore();
+
+  if (!store) {
+    return;
+  }
+
+  store[elementId] = {
+    ...(store[elementId] ?? {}),
+    [pointIndex]: [tangent[0], tangent[1]],
+  };
+};
+
+export const clearSimpleArrowTangentOverride = (
+  elementId: string,
+  pointIndex?: number,
+) => {
+  const store = getSimpleArrowTangentOverrideStore();
+
+  if (!store?.[elementId]) {
+    return;
+  }
+
+  if (typeof pointIndex === "number") {
+    delete store[elementId][pointIndex];
+
+    if (Object.keys(store[elementId]).length === 0) {
+      delete store[elementId];
+    }
+    return;
+  }
+
+  delete store[elementId];
+};
+
+const getSimpleArrowTangentOverrides = (elementId?: string) => {
+  if (!elementId) {
+    return null;
+  }
+
+  return getSimpleArrowTangentOverrideStore()?.[elementId] ?? null;
+};
+
+const getSimpleArrowVectorLength = ([x, y]: SimpleArrowVector) =>
+  Math.hypot(x, y);
+
+const normalizeSimpleArrowAngle = (angle: number) => {
+  let normalized = angle;
+
+  while (normalized <= -Math.PI) {
+    normalized += Math.PI * 2;
+  }
+  while (normalized > Math.PI) {
+    normalized -= Math.PI * 2;
+  }
+
+  return normalized;
+};
+
+const getSimpleArrowBezierValue = (
+  p0: number,
+  p1: number,
+  p2: number,
+  p3: number,
+  t: number,
+) => {
+  const mt = 1 - t;
+
+  return (
+    mt * mt * mt * p0 +
+    3 * mt * mt * t * p1 +
+    3 * mt * t * t * p2 +
+    t * t * t * p3
+  );
+};
+
+const doesSimpleArrowSegmentOvershoot = (
+  startProjection: number,
+  endProjection: number,
+  segmentLength: number,
+) => {
+  const a = -3 * startProjection + 3 * endProjection + segmentLength;
+  const b = 2 * (segmentLength - 2 * endProjection + startProjection);
+  const c = startProjection;
+  const candidateTs = [0, 1];
+
+  if (Math.abs(a) < 1e-8) {
+    if (Math.abs(b) >= 1e-8) {
+      candidateTs.push(-c / b);
+    }
+  } else {
+    const discriminant = b * b - 4 * a * c;
+
+    if (discriminant >= 0) {
+      const discriminantRoot = Math.sqrt(discriminant);
+      candidateTs.push((-b + discriminantRoot) / (2 * a));
+      candidateTs.push((-b - discriminantRoot) / (2 * a));
+    }
+  }
+
+  let minProjection = Infinity;
+  let maxProjection = -Infinity;
+
+  for (const t of candidateTs) {
+    if (t < 0 || t > 1) {
+      continue;
+    }
+
+    const projection = getSimpleArrowBezierValue(
+      0,
+      startProjection,
+      endProjection,
+      segmentLength,
+      t,
+    );
+
+    minProjection = Math.min(minProjection, projection);
+    maxProjection = Math.max(maxProjection, projection);
+  }
+
+  return (
+    minProjection < -SIMPLE_ARROW_OVERSHOOT_EPSILON ||
+    maxProjection > segmentLength + SIMPLE_ARROW_OVERSHOOT_EPSILON
+  );
+};
+
+const getSimpleArrowBaseTangents = <Point extends GlobalPoint | LocalPoint>(
+  points: readonly Point[],
+  tension: number,
+): [Float64Array, Float64Array] => {
+  const tx = new Float64Array(points.length);
+  const ty = new Float64Array(points.length);
+
+  for (let i = 0; i < points.length; i++) {
+    if (i === 0) {
+      const pbx = 3 * points[0][0] - 3 * points[1][0] + points[2][0];
+      const pby = 3 * points[0][1] - 3 * points[1][1] + points[2][1];
+      tx[i] = tension * (points[1][0] - pbx);
+      ty[i] = tension * (points[1][1] - pby);
+    } else if (i === points.length - 1) {
+      const pax =
+        3 * points[points.length - 1][0] -
+        3 * points[points.length - 2][0] +
+        points[points.length - 3][0];
+      const pay =
+        3 * points[points.length - 1][1] -
+        3 * points[points.length - 2][1] +
+        points[points.length - 3][1];
+      tx[i] = tension * (pax - points[points.length - 2][0]);
+      ty[i] = tension * (pay - points[points.length - 2][1]);
+    } else {
+      tx[i] = tension * (points[i + 1][0] - points[i - 1][0]);
+      ty[i] = tension * (points[i + 1][1] - points[i - 1][1]);
+    }
+  }
+
+  return [tx, ty];
+};
+
+const getSimpleArrowSegmentProjections = <
+  Point extends GlobalPoint | LocalPoint,
+>(
+  points: readonly Point[],
+  tangentX: Float64Array,
+  tangentY: Float64Array,
+  scales: Float64Array | undefined,
+  segmentIndex: number,
+  segmentScale = 1,
+) => {
+  const start = points[segmentIndex];
+  const end = points[segmentIndex + 1];
+  const segmentDx = end[0] - start[0];
+  const segmentDy = end[1] - start[1];
+  const segmentLength = Math.hypot(segmentDx, segmentDy);
+
+  if (!segmentLength) {
+    return {
+      segmentLength,
+      startProjection: 0,
+      endProjection: 0,
+    };
+  }
+
+  const segmentUx = segmentDx / segmentLength;
+  const segmentUy = segmentDy / segmentLength;
+  const startScale = scales?.[segmentIndex] ?? 1;
+  const endScale = scales?.[segmentIndex + 1] ?? 1;
+  const startProjection =
+    startScale *
+    segmentScale *
+    ((tangentX[segmentIndex] * segmentUx + tangentY[segmentIndex] * segmentUy) /
+      3);
+  const endProjection =
+    segmentLength -
+    endScale *
+      segmentScale *
+      ((tangentX[segmentIndex + 1] * segmentUx +
+        tangentY[segmentIndex + 1] * segmentUy) /
+        3);
+
+  return {
+    segmentLength,
+    startProjection,
+    endProjection,
+  };
+};
+
+const isSimpleArrowSegmentOvershooting = <
+  Point extends GlobalPoint | LocalPoint,
+>(
+  points: readonly Point[],
+  tangentX: Float64Array,
+  tangentY: Float64Array,
+  scales: Float64Array | undefined,
+  segmentIndex: number,
+  segmentScale = 1,
+) => {
+  const { segmentLength, startProjection, endProjection } =
+    getSimpleArrowSegmentProjections(
+      points,
+      tangentX,
+      tangentY,
+      scales,
+      segmentIndex,
+      segmentScale,
+    );
+
+  if (!segmentLength) {
+    return false;
+  }
+
+  return doesSimpleArrowSegmentOvershoot(
+    startProjection,
+    endProjection,
+    segmentLength,
+  );
+};
+
+const getSimpleArrowSegmentScale = <Point extends GlobalPoint | LocalPoint>(
+  points: readonly Point[],
+  tx: Float64Array,
+  ty: Float64Array,
+  scales: Float64Array,
+  segmentIndex: number,
+) => {
+  if (
+    !isSimpleArrowSegmentOvershooting(points, tx, ty, scales, segmentIndex, 1)
+  ) {
+    return 1;
+  }
+
+  let low = 0;
+  let high = 1;
+
+  for (let i = 0; i < SIMPLE_ARROW_SCALE_SEARCH_STEPS; i++) {
+    const mid = (low + high) / 2;
+    if (
+      isSimpleArrowSegmentOvershooting(
+        points,
+        tx,
+        ty,
+        scales,
+        segmentIndex,
+        mid,
+      )
+    ) {
+      high = mid;
+    } else {
+      low = mid;
+    }
+  }
+
+  return low;
+};
+
+const getSimpleArrowTangentScales = <Point extends GlobalPoint | LocalPoint>(
+  points: readonly Point[],
+  tx: Float64Array,
+  ty: Float64Array,
+) => {
+  const scales = new Float64Array(points.length);
+  scales.fill(1);
+
+  for (let pass = 0; pass < SIMPLE_ARROW_SCALE_PASSES; pass++) {
+    const nextScales = new Float64Array(scales);
+    let didChange = false;
+
+    for (
+      let segmentIndex = 0;
+      segmentIndex < points.length - 1;
+      segmentIndex++
+    ) {
+      if (
+        !isSimpleArrowSegmentOvershooting(points, tx, ty, scales, segmentIndex)
+      ) {
+        continue;
+      }
+
+      const segmentScale = getSimpleArrowSegmentScale(
+        points,
+        tx,
+        ty,
+        scales,
+        segmentIndex,
+      );
+
+      const nextStartScale = scales[segmentIndex] * segmentScale;
+      const nextEndScale = scales[segmentIndex + 1] * segmentScale;
+
+      if (
+        nextStartScale <
+        nextScales[segmentIndex] - SIMPLE_ARROW_SCALE_EPSILON
+      ) {
+        nextScales[segmentIndex] = nextStartScale;
+        didChange = true;
+      }
+
+      if (
+        nextEndScale <
+        nextScales[segmentIndex + 1] - SIMPLE_ARROW_SCALE_EPSILON
+      ) {
+        nextScales[segmentIndex + 1] = nextEndScale;
+        didChange = true;
+      }
+    }
+
+    if (!didChange) {
+      return scales;
+    }
+
+    scales.set(nextScales);
+  }
+
+  return scales;
+};
+
+const getSimpleArrowFinalTangents = (
+  tx: Float64Array,
+  ty: Float64Array,
+  scales: Float64Array,
+  elementId?: string,
+) => {
+  const finalX = new Float64Array(tx.length);
+  const finalY = new Float64Array(ty.length);
+
+  for (let i = 0; i < tx.length; i++) {
+    finalX[i] = tx[i] * scales[i];
+    finalY[i] = ty[i] * scales[i];
+  }
+
+  const overrides = getSimpleArrowTangentOverrides(elementId);
+
+  if (!overrides) {
+    return {
+      finalX,
+      finalY,
+      overriddenPointIndices: [] as number[],
+    };
+  }
+
+  const overriddenPointIndices: number[] = [];
+
+  for (const [indexKey, tangent] of Object.entries(overrides)) {
+    const index = Number(indexKey);
+
+    if (!Number.isInteger(index) || index < 0 || index >= finalX.length) {
+      continue;
+    }
+
+    finalX[index] = tangent[0];
+    finalY[index] = tangent[1];
+    overriddenPointIndices.push(index);
+  }
+
+  overriddenPointIndices.sort((a, b) => a - b);
+
+  return {
+    finalX,
+    finalY,
+    overriddenPointIndices,
+  };
+};
+
+export const getSimpleArrowCurveDebugData = <
+  Point extends GlobalPoint | LocalPoint,
+>(
+  points: readonly Point[],
+  tension = 0.5,
+  options?: SimpleArrowCurveDebugDataOptions,
+): SimpleArrowCurveDebugData<Point> => {
+  if (points.length < 2) {
+    return {
+      elementId: options?.elementId,
+      tangents: [],
+      segments: [],
+      inference: {
+        overriddenPointIndices: [],
+      },
+    };
+  }
+
+  if (points.length === 2) {
+    return {
+      elementId: options?.elementId,
+      tangents: points.map((point) => ({
+        point,
+        base: [0, 0],
+        autoScaled: [0, 0],
+        scale: 1,
+        autoScale: 1,
+        scaled: [0, 0],
+        isAdjusted: false,
+        isOverridden: false,
+        normalized: {
+          baseLength: 0,
+          autoLength: 0,
+          finalLength: 0,
+          prevSegmentLength: null,
+          nextSegmentLength: null,
+          minNeighborLength: null,
+          finalLengthVsMinNeighbor: null,
+          autoLengthVsMinNeighbor: null,
+          angleDelta: 0,
+          turnAngle: null,
+        },
+      })),
+      segments: [],
+      inference: {
+        overriddenPointIndices: [],
+      },
+    };
+  }
+
+  const [tx, ty] = getSimpleArrowBaseTangents(points, tension);
+  const scales = getSimpleArrowTangentScales(points, tx, ty);
+  const baselineScales = new Float64Array(points.length);
+  baselineScales.fill(1);
+  const { finalX, finalY, overriddenPointIndices } =
+    getSimpleArrowFinalTangents(tx, ty, scales, options?.elementId);
+
+  return {
+    elementId: options?.elementId,
+    tangents: points.map((point, index) => ({
+      point,
+      base: [tx[index], ty[index]],
+      autoScaled: [tx[index] * scales[index], ty[index] * scales[index]],
+      scale:
+        getSimpleArrowVectorLength([tx[index], ty[index]]) > 0
+          ? getSimpleArrowVectorLength([finalX[index], finalY[index]]) /
+            getSimpleArrowVectorLength([tx[index], ty[index]])
+          : 1,
+      autoScale: scales[index],
+      scaled: [finalX[index], finalY[index]],
+      isAdjusted:
+        Math.abs(scales[index] - 1) > SIMPLE_ARROW_ADJUSTMENT_EPSILON ||
+        Math.abs(
+          normalizeSimpleArrowAngle(
+            Math.atan2(finalY[index], finalX[index]) -
+              Math.atan2(ty[index], tx[index]),
+          ),
+        ) > SIMPLE_ARROW_ADJUSTMENT_EPSILON,
+      isOverridden: overriddenPointIndices.includes(index),
+      normalized: (() => {
+        const base = [tx[index], ty[index]] as SimpleArrowVector;
+        const autoScaled = [
+          tx[index] * scales[index],
+          ty[index] * scales[index],
+        ] as SimpleArrowVector;
+        const scaled = [finalX[index], finalY[index]] as SimpleArrowVector;
+        const baseLength = getSimpleArrowVectorLength(base);
+        const autoLength = getSimpleArrowVectorLength(autoScaled);
+        const finalLength = getSimpleArrowVectorLength(scaled);
+        const prevSegmentLength =
+          index > 0 ? pointDistance(points[index - 1], point) : null;
+        const nextSegmentLength =
+          index < points.length - 1
+            ? pointDistance(point, points[index + 1])
+            : null;
+        const minNeighborLength =
+          prevSegmentLength === null
+            ? nextSegmentLength
+            : nextSegmentLength === null
+            ? prevSegmentLength
+            : Math.min(prevSegmentLength, nextSegmentLength);
+        const turnAngle =
+          prevSegmentLength !== null && nextSegmentLength !== null
+            ? normalizeSimpleArrowAngle(
+                Math.atan2(
+                  points[index + 1][1] - point[1],
+                  points[index + 1][0] - point[0],
+                ) -
+                  Math.atan2(
+                    point[1] - points[index - 1][1],
+                    point[0] - points[index - 1][0],
+                  ),
+              )
+            : null;
+
+        return {
+          baseLength,
+          autoLength,
+          finalLength,
+          prevSegmentLength,
+          nextSegmentLength,
+          minNeighborLength,
+          finalLengthVsMinNeighbor:
+            minNeighborLength && minNeighborLength > 0
+              ? finalLength / minNeighborLength
+              : null,
+          autoLengthVsMinNeighbor:
+            minNeighborLength && minNeighborLength > 0
+              ? autoLength / minNeighborLength
+              : null,
+          angleDelta: normalizeSimpleArrowAngle(
+            Math.atan2(finalY[index], finalX[index]) -
+              Math.atan2(ty[index], tx[index]),
+          ),
+          turnAngle,
+        };
+      })(),
+    })),
+    segments: points.slice(0, -1).map((start, index) => {
+      const end = points[index + 1];
+      const {
+        segmentLength: chordLength,
+        startProjection: baseStartProjection,
+        endProjection: baseEndProjection,
+      } = getSimpleArrowSegmentProjections(
+        points,
+        tx,
+        ty,
+        baselineScales,
+        index,
+      );
+      const {
+        startProjection: finalStartProjection,
+        endProjection: finalEndProjection,
+      } = getSimpleArrowSegmentProjections(
+        points,
+        finalX,
+        finalY,
+        undefined,
+        index,
+      );
+      const baseCp1 = pointFrom<Point>(
+        start[0] + tx[index] / 3,
+        start[1] + ty[index] / 3,
+      );
+      const baseCp2 = pointFrom<Point>(
+        end[0] - tx[index + 1] / 3,
+        end[1] - ty[index + 1] / 3,
+      );
+      const cp1 = pointFrom<Point>(
+        start[0] + finalX[index] / 3,
+        start[1] + finalY[index] / 3,
+      );
+      const cp2 = pointFrom<Point>(
+        end[0] - finalX[index + 1] / 3,
+        end[1] - finalY[index + 1] / 3,
+      );
+
+      return {
+        start,
+        end,
+        baseCp1,
+        baseCp2,
+        cp1,
+        cp2,
+        overshootsBaseline: isSimpleArrowSegmentOvershooting(
+          points,
+          tx,
+          ty,
+          baselineScales,
+          index,
+        ),
+        overshootsResolved: isSimpleArrowSegmentOvershooting(
+          points,
+          finalX,
+          finalY,
+          undefined,
+          index,
+        ),
+        metrics: {
+          chordLength,
+          baseStartProjection,
+          baseEndProjection,
+          finalStartProjection,
+          finalEndProjection,
+        },
+      };
+    }),
+    inference: {
+      overriddenPointIndices,
+    },
+  };
+};
+
+const generateSimpleArrowPathOps = (
+  points: readonly LocalPoint[],
+  tension = 0.5,
+  elementId?: string,
+): SimpleArrowPathOp[] => {
+  if (points.length < 2) {
+    return [];
+  }
+
+  const ops: SimpleArrowPathOp[] = [
+    {
+      op: "move",
+      data: pointFrom<LocalPoint>(points[0][0], points[0][1]),
+    },
+  ];
+
+  if (points.length === 2) {
+    ops.push({
+      op: "lineTo",
+      data: pointFrom<LocalPoint>(points[1][0], points[1][1]),
+    });
+
+    return ops;
+  }
+  const debugData = getSimpleArrowCurveDebugData(points, tension, {
+    elementId,
+  });
+
+  for (const segment of debugData.segments) {
+    const { cp1, cp2, end } = segment;
+
+    ops.push({
+      op: "bcurveTo",
+      data: [cp1[0], cp1[1], cp2[0], cp2[1], end[0], end[1]],
+    });
+  }
+
+  return ops;
+};
+
+const generateSimpleArrowShape = (
+  points: readonly LocalPoint[],
+  tension = 0.5,
+  elementId?: string,
+): string => {
+  return generateSimpleArrowPathOps(points, tension, elementId)
+    .map((op) => {
+      if (op.op === "bcurveTo") {
+        return `C ${op.data[0]} ${op.data[1]} ${op.data[2]} ${op.data[3]} ${op.data[4]} ${op.data[5]}`;
+      }
+
+      return `${op.op === "move" ? "M" : "L"} ${op.data[0]} ${op.data[1]}`;
+    })
+    .join(" ");
+};
+
 const generateElbowArrowShape = (
   points: readonly LocalPoint[],
   radius: number,
-) => {
+): string => {
   const subpoints = [] as [number, number][];
   for (let i = 1; i < points.length - 1; i += 1) {
     const prev = points[i - 1];

packages/element/src/textElement.ts

@@ -441,7 +441,8 @@ 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/tests/bounds.test.ts

@@ -135,9 +135,9 @@ describe("getElementBounds", () => {
     } as ExcalidrawLinearElement;
 
     const [x1, y1, x2, y2] = getElementBounds(element, arrayToMap([element]));
-    expect(x1).toEqual(360.9291017525165);
+    expect(x1).toEqual(360.3176068760539);
-    expect(y1).toEqual(185.24770129343722);
+    expect(y1).toEqual(185.90654264413516);
-    expect(x2).toEqual(481.4815539037601);
+    expect(x2).toEqual(486.6924560404731);
-    expect(y2).toEqual(319.8162855827246);
+    expect(y2).toEqual(320.391865303557);
   });
 });

packages/element/tests/linearElementEditor.test.tsx

@@ -434,12 +434,12 @@ describe("Test Linear Elements", () => {
       expect(midPointsWithRoundEdge).toMatchInlineSnapshot(`
         [
           [
-            "54.27552",
+            "53.63967",
-            "46.16120",
+            "47.15774",
           ],
           [
-            "76.95494",
+            "78.65236",
-            "44.56052",
+            "44.31886",
           ],
         ]
       `);
@@ -499,12 +499,12 @@ describe("Test Linear Elements", () => {
       expect(newMidPoints).toMatchInlineSnapshot(`
         [
           [
-            "104.27552",
+            "103.63967",
-            "66.16120",
+            "67.15774",
           ],
           [
-            "126.95494",
+            "128.65236",
-            "64.56052",
+            "64.31886",
           ],
         ]
       `);
@@ -815,12 +815,12 @@ describe("Test Linear Elements", () => {
         expect(newMidPoints).toMatchInlineSnapshot(`
           [
             [
-              "29.28349",
+              "28.64089",
-              "20.91105",
+              "21.69997",
             ],
             [
-              "78.86048",
+              "82.34322",
-              "46.12277",
+              "47.57759",
             ],
           ]
         `);
@@ -904,12 +904,12 @@ describe("Test Linear Elements", () => {
         expect(newMidPoints).toMatchInlineSnapshot(`
           [
             [
-              "54.27552",
+              "53.63967",
-              "46.16120",
+              "47.15774",
             ],
             [
-              "76.95494",
+              "78.65236",
-              "44.56052",
+              "44.31886",
             ],
           ]
         `);
@@ -1191,7 +1191,7 @@ describe("Test Linear Elements", () => {
           20,
           105,
           80,
-          "55.45894",
+          "56.00000",
           45,
         ]
       `);
@@ -1202,7 +1202,7 @@ describe("Test Linear Elements", () => {
         .toMatchInlineSnapshot(`
           {
             "height": 130,
-            "width": "366.11716",
+            "width": "367.18528",
           }
         `);
 
@@ -1214,7 +1214,7 @@ describe("Test Linear Elements", () => {
         ),
       ).toMatchInlineSnapshot(`
         {
-          "x": "271.11716",
+          "x": "272.18528",
           "y": 45,
         }
       `);
@@ -1231,9 +1231,9 @@ describe("Test Linear Elements", () => {
         [
           20,
           35,
-          "501.11716",
+          "502.18528",
           95,
-          "205.45894",
+          "208.69244",
           "52.50000",
         ]
       `);

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/actions/actionProperties.tsx

@@ -191,7 +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;
@@ -209,9 +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) ??
@@ -730,9 +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"]>(

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/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";
 
@@ -684,9 +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 };
@@ -1248,6 +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 {
@@ -1438,6 +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,
@@ -2321,6 +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}
@@ -3574,10 +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;
@@ -5617,8 +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();
@@ -5721,6 +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
@@ -5744,6 +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,
@@ -5757,6 +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,
@@ -5969,6 +6138,7 @@ class App extends React.Component<AppProps, AppState> {
     insertAtParentCenter = true,
     container,
     autoEdit = true,
+    initialCaretSceneCoords,
   }: {
     /** X position to insert text at */
     sceneX: number;
@@ -5978,6 +6148,7 @@ class App extends React.Component<AppProps, AppState> {
     insertAtParentCenter?: boolean;
     container?: ExcalidrawTextContainer | null;
     autoEdit?: boolean;
+    initialCaretSceneCoords?: { x: number; y: number };
   }) => {
     let shouldBindToContainer = false;
 
@@ -5998,24 +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;
@@ -6062,11 +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,
@@ -6116,6 +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({
@@ -6141,9 +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) {
@@ -6331,6 +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,
@@ -6867,6 +7101,12 @@ 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 &&
@@ -7011,7 +7251,9 @@ 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 ||
@@ -7232,6 +7474,8 @@ 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";
@@ -7455,6 +7699,15 @@ class App extends React.Component<AppProps, AppState> {
       selectedElementsAreBeingDragged: false,
     });
 
+    if (
+      this.handleTextAutoResizeHandlePointerDown(
+        selectedElements,
+        pointerDownState.origin,
+      )
+    ) {
+      return;
+    }
+
     if (this.handleDraggingScrollBar(event, pointerDownState)) {
       return;
     }
@@ -7680,6 +7933,10 @@ class App extends React.Component<AppProps, AppState> {
     }
 
     this.removePointer(event);
+    this.lastPointerUpIsDoubleClick = this.isDoubleClick(
+      this.lastPointerUpEvent,
+      event,
+    );
     this.lastPointerUpEvent = event;
 
     if (!event.ctrlKey) {
@@ -8516,6 +8773,7 @@ class App extends React.Component<AppProps, AppState> {
       insertAtParentCenter: !event.altKey,
       container,
       autoEdit: false,
+      initialCaretSceneCoords: { x: sceneX, y: sceneY },
     });
 
     resetCursor(this.interactiveCanvas);
@@ -11001,6 +11259,35 @@ 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/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/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/global.d.ts

@@ -4,6 +4,8 @@ interface Window {
   EXCALIDRAW_ASSET_PATH: string | string[] | undefined;
   EXCALIDRAW_THROTTLE_RENDER: boolean | undefined;
   DEBUG_FRACTIONAL_INDICES: boolean | undefined;
+  EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENTS: boolean | undefined;
+  EXCALIDRAW_DEBUG_SELECTED_LINEAR_ARROW: unknown;
   EXCALIDRAW_EXPORT_SOURCE: string;
   gtag: Function;
   sa_event: Function;

packages/excalidraw/renderer/interactiveScene.ts

@@ -41,6 +41,8 @@ import {
   maxBindingDistance_simple,
   isTextElement,
   LinearElementEditor,
+  getActiveTextElement,
+  getSimpleArrowCurveDebugData,
 } from "@excalidraw/element";
 
 import { renderSelectionElement } from "@excalidraw/element";
@@ -58,6 +60,8 @@ import {
   isFocusPointVisible,
 } from "@excalidraw/element";
 
+import type { EditorInterface } from "@excalidraw/common";
+
 import type {
   TransformHandles,
   TransformHandleType,
@@ -86,6 +90,10 @@ import {
 } from "../scene/scrollbars";
 
 import { getClientColor, renderRemoteCursors } from "../clients";
+import {
+  getTextAutoResizeHandle,
+  getTextBoxPadding,
+} from "../textAutoResizeHandle";
 
 import {
   bootstrapCanvas,
@@ -1194,6 +1202,105 @@ const renderLinearPointHandles = (
   context.restore();
 };
 
+const isSimpleArrowTangentDebugEnabled = () =>
+  window.EXCALIDRAW_DEBUG_LINEAR_ARROW_TANGENTS === true;
+
+const renderSimpleArrowTangentOverlay = (
+  context: CanvasRenderingContext2D,
+  appState: InteractiveCanvasAppState,
+  element: NonDeleted<ExcalidrawArrowElement>,
+  elementsMap: RenderableElementsMap,
+) => {
+  const points = LinearElementEditor.getPointsGlobalCoordinates(
+    element,
+    elementsMap,
+  );
+  const debugData = getSimpleArrowCurveDebugData(points);
+
+  window.EXCALIDRAW_DEBUG_SELECTED_LINEAR_ARROW = debugData;
+
+  context.save();
+  context.translate(appState.scrollX, appState.scrollY);
+  context.lineWidth = 1 / appState.zoom.value;
+
+  context.setLineDash([6 / appState.zoom.value, 4 / appState.zoom.value]);
+  context.strokeStyle = "rgba(134, 142, 150, 0.75)";
+
+  for (const segment of debugData.segments) {
+    context.beginPath();
+    context.moveTo(segment.start[0], segment.start[1]);
+    context.lineTo(segment.baseCp1[0], segment.baseCp1[1]);
+    context.lineTo(segment.baseCp2[0], segment.baseCp2[1]);
+    context.lineTo(segment.end[0], segment.end[1]);
+    context.stroke();
+  }
+
+  context.setLineDash([]);
+
+  for (const segment of debugData.segments) {
+    const strokeStyle = segment.overshootsBaseline
+      ? "rgba(245, 159, 0, 0.9)"
+      : "rgba(94, 90, 216, 0.85)";
+
+    context.strokeStyle = strokeStyle;
+    context.fillStyle = "rgba(255, 255, 255, 0.95)";
+
+    context.beginPath();
+    context.moveTo(segment.start[0], segment.start[1]);
+    context.lineTo(segment.cp1[0], segment.cp1[1]);
+    context.lineTo(segment.cp2[0], segment.cp2[1]);
+    context.lineTo(segment.end[0], segment.end[1]);
+    context.stroke();
+
+    fillCircle(
+      context,
+      segment.cp1[0],
+      segment.cp1[1],
+      4 / appState.zoom.value,
+      true,
+      true,
+    );
+    fillCircle(
+      context,
+      segment.cp2[0],
+      segment.cp2[1],
+      4 / appState.zoom.value,
+      true,
+      true,
+    );
+  }
+
+  context.strokeStyle = "rgba(201, 42, 42, 0.85)";
+  context.fillStyle = "rgba(201, 42, 42, 0.95)";
+
+  for (const tangent of debugData.tangents) {
+    if (!tangent.isAdjusted) {
+      continue;
+    }
+
+    const handle = pointFrom<GlobalPoint>(
+      tangent.point[0] + tangent.scaled[0] / 3,
+      tangent.point[1] + tangent.scaled[1] / 3,
+    );
+
+    context.beginPath();
+    context.moveTo(tangent.point[0], tangent.point[1]);
+    context.lineTo(handle[0], handle[1]);
+    context.stroke();
+
+    fillCircle(
+      context,
+      tangent.point[0],
+      tangent.point[1],
+      3 / appState.zoom.value,
+      true,
+      true,
+    );
+  }
+
+  context.restore();
+};
+
 const renderFocusPointConnectionLine = (
   context: CanvasRenderingContext2D,
   appState: InteractiveCanvasAppState,
@@ -1489,21 +1596,58 @@ 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 +1728,19 @@ 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;
@@ -1669,6 +1822,13 @@ const _renderInteractiveScene = ({
   const selectedLinearElement =
     linearState &&
     LinearElementEditor.getElement(linearState.elementId, allElementsMap);
+  const selectedRoundedArrow =
+    selectedElements.length === 1 &&
+    isArrowElement(selectedElements[0]) &&
+    !isElbowArrow(selectedElements[0]) &&
+    !!selectedElements[0].roundness
+      ? (selectedElements[0] as NonDeleted<ExcalidrawArrowElement>)
+      : null;
   // Arrows have a different highlight behavior when
   // they are the only selected element
   if (selectedLinearElement) {
@@ -1705,6 +1865,17 @@ const _renderInteractiveScene = ({
     }
   }
 
+  if (selectedRoundedArrow && isSimpleArrowTangentDebugEnabled()) {
+    renderSimpleArrowTangentOverlay(
+      context,
+      appState,
+      selectedRoundedArrow,
+      elementsMap,
+    );
+  } else {
+    window.EXCALIDRAW_DEBUG_SELECTED_LINEAR_ARROW = undefined;
+  }
+
   // Paint selected elements
   if (
     !appState.multiElement &&

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": 28,
   "width": "94.00000",
   "x": 0,
   "y": 0,
@@ -350,7 +350,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 28,
+            "version": 27,
             "width": "88.00000",
           },
           "inserted": {
@@ -381,7 +381,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 25,
+            "version": 24,
             "width": "88.00000",
           },
         },
@@ -437,7 +437,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
             ],
             "startBinding": null,
-            "version": 29,
+            "version": 28,
             "width": "94.00000",
             "x": 0,
             "y": 0,
@@ -462,7 +462,7 @@ exports[`history > multiplayer undo/redo > conflicts in arrows and their bindabl
               ],
               "mode": "orbit",
             },
-            "version": 28,
+            "version": 27,
             "width": "88.00000",
             "x": 6,
             "y": "7.20923",
@@ -1360,9 +1360,9 @@ 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 +1537,12 @@ 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 +1722,7 @@ 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 +1867,7 @@ 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 +2416,7 @@ 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 +2581,7 @@ 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",
@@ -16254,7 +16254,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 10,
+  "version": 11,
   "width": "88.00000",
   "x": 6,
   "y": "0.01000",
@@ -16307,7 +16307,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               "mode": "orbit",
             },
-            "version": 10,
+            "version": 11,
           },
           "inserted": {
             "endBinding": {
@@ -16327,7 +16327,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               "mode": "orbit",
             },
-            "version": 8,
+            "version": 9,
           },
         },
       },
@@ -16669,14 +16669,14 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 7,
+            "version": 8,
             "width": "88.00000",
             "x": 6,
             "y": "0.00880",
           },
           "inserted": {
             "isDeleted": true,
-            "version": 6,
+            "version": 7,
           },
         },
       },
@@ -17002,7 +17002,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 10,
+  "version": 11,
   "width": "88.00000",
   "x": 6,
   "y": "0.01000",
@@ -17307,14 +17307,14 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 10,
+            "version": 11,
             "width": "88.00000",
             "x": 6,
             "y": "0.01000",
           },
           "inserted": {
             "isDeleted": true,
-            "version": 8,
+            "version": 9,
           },
         },
       },
@@ -17648,7 +17648,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 10,
+  "version": 11,
   "width": "88.00000",
   "x": 6,
   "y": "0.01000",
@@ -17953,14 +17953,14 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 10,
+            "version": 11,
             "width": "88.00000",
             "x": 6,
             "y": "0.01000",
           },
           "inserted": {
             "isDeleted": true,
-            "version": 8,
+            "version": 9,
           },
         },
       },
@@ -18292,7 +18292,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 10,
+  "version": 11,
   "width": "88.00000",
   "x": 6,
   "y": "0.01000",
@@ -18361,7 +18361,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               "mode": "orbit",
             },
-            "version": 10,
+            "version": 11,
           },
           "inserted": {
             "endBinding": {
@@ -18373,7 +18373,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               "mode": "orbit",
             },
             "startBinding": null,
-            "version": 8,
+            "version": 9,
           },
         },
         "id2": {
@@ -18683,14 +18683,14 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 7,
+            "version": 8,
             "width": "88.00000",
             "x": 6,
             "y": "0.00880",
           },
           "inserted": {
             "isDeleted": true,
-            "version": 6,
+            "version": 7,
           },
         },
       },
@@ -19044,7 +19044,7 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
   "strokeWidth": 2,
   "type": "arrow",
   "updated": 1,
-  "version": 11,
+  "version": 12,
   "width": "88.00000",
   "x": 6,
   "y": "0.01000",
@@ -19124,12 +19124,12 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
               ],
               "mode": "orbit",
             },
-            "version": 11,
+            "version": 12,
           },
           "inserted": {
             "endBinding": null,
             "startBinding": null,
-            "version": 9,
+            "version": 10,
           },
         },
       },
@@ -19431,14 +19431,14 @@ exports[`history > singleplayer undo/redo > should support bidirectional binding
             "strokeStyle": "solid",
             "strokeWidth": 2,
             "type": "arrow",
-            "version": 7,
+            "version": 8,
             "width": "88.00000",
             "x": 6,
             "y": "0.00880",
           },
           "inserted": {
             "isDeleted": true,
-            "version": 6,
+            "version": 7,
           },
         },
       },

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/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
@@ -876,9 +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

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,
@@ -210,6 +213,42 @@ 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 +271,67 @@ describe("textWysiwyg", () => {
       expect(h.elements.length).toBe(1);
     });
 
+    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", {
@@ -1511,7 +1611,7 @@ 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/utils/src/shape.ts

@@ -196,7 +196,7 @@ export const getEllipseShape = <Point extends GlobalPoint | LocalPoint>(
 
 export const getCurvePathOps = (shape: Drawable): Op[] => {
   // NOTE (mtolmacs): Temporary fix for extremely large elements
-  if (!shape) {
+  if (!shape || shape.sets.length === 0) {
     return [];
   }
 
@@ -205,6 +205,7 @@ export const getCurvePathOps = (shape: Drawable): Op[] => {
       return set.ops;
     }
   }
+
   return shape.sets[0].ops;
 };
 
@@ -316,26 +317,29 @@ export const getClosedCurveShape = <Point extends GlobalPoint | LocalPoint>(
     };
   }
 
-  const ops = getCurvePathOps(roughShape);
+  // Prefer the fillPath set
+  const fillPathSet = roughShape.sets.find((s) => s.type === "fillPath");
+  const ops = fillPathSet ? fillPathSet.ops : getCurvePathOps(roughShape);
 
   const points: Point[] = [];
   let odd = false;
   for (const operation of ops) {
     if (operation.op === "move") {
-      odd = !odd;
+      if (fillPathSet) {
-      if (odd) {
+        // fillPath is always a single run — no odd/even skipping needed
         points.push(pointFrom(operation.data[0], operation.data[1]));
+      } else {
+        odd = !odd;
+        if (odd) {
+          points.push(pointFrom(operation.data[0], operation.data[1]));
+        }
       }
     } else if (operation.op === "bcurveTo") {
-      if (odd) {
+      if (fillPathSet || odd) {
         points.push(pointFrom(operation.data[0], operation.data[1]));
         points.push(pointFrom(operation.data[2], operation.data[3]));
         points.push(pointFrom(operation.data[4], operation.data[5]));
       }
-    } else if (operation.op === "lineTo") {
-      if (odd) {
-        points.push(pointFrom(operation.data[0], operation.data[1]));
-      }
     }
   }