feat: text wrapping (#7999)

* resize single elements from the side

* fix lint

* do not resize texts from the sides (for we want to wrap/unwrap)

* omit side handles for frames too

* upgrade types

* enable resizing from the sides for multiple elements as well

* fix lint

* maintain aspect ratio when elements are not of the same angle

* lint

* always resize proportionally for multiple elements

* increase side resizing padding

* code cleanup

* adaptive handles

* do not resize for linear elements with only two points

* prioritize point dragging over edge resizing

* lint

* allow free resizing for multiple elements at degree 0

* always resize from the sides

* reduce hit threshold

* make small multiple elements movable

* lint

* show side handles on touch screen and mobile devices

* differentiate touchscreens

* keep proportional with text in multi-element resizing

* update snapshot

* update multi elements resizing logic

* lint

* reduce side resizing padding

* bound texts do not scale in normal cases

* lint

* test sides for texts

* wrap text

* do not update text size when changing its alignment

* keep text wrapped/unwrapped when editing

* change wrapped size to auto size from context menu

* fix test

* lint

* increase min width for wrapped texts

* wrap wrapped text in container

* unwrap when binding text to container

* rename `wrapped` to `autoResize`

* fix lint

* revert: use `center` align when wrapping text in container

* update snaps

* fix lint

* simplify logic on autoResize

* lint and test

* snapshots

* remove unnecessary code

* snapshots

* fix: defaults not set correctly

* tests for wrapping texts when resized

* tests for text wrapping when edited

* fix autoResize refactor

* include autoResize flag check

* refactor

* feat: rename action label & change contextmenu position

* fix: update version on `autoResize` action

* fix infinite loop when editing text in a container

* simplify

* always maintain `width` if `!autoResize`

* maintain `x` if `!autoResize`

* maintain `y` pos after fontSize change if `!autoResize`

* refactor

* when editing, do not wrap text in textWysiwyg

* simplify text editor

* make test more readable

* comment

* rename action to match file name

* revert function signature change

* only update  in app

---------

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

packages/excalidraw/actions/actionBoundText.tsx

@@ -1,8 +1,8 @@
 import {
   BOUND_TEXT_PADDING,
   ROUNDNESS,
-  VERTICAL_ALIGN,
   TEXT_ALIGN,
+  VERTICAL_ALIGN,
 } from "../constants";
 import { isTextElement, newElement } from "../element";
 import { mutateElement } from "../element/mutateElement";
@@ -142,6 +142,7 @@ export const actionBindText = register({
       containerId: container.id,
       verticalAlign: VERTICAL_ALIGN.MIDDLE,
       textAlign: TEXT_ALIGN.CENTER,
+      autoResize: true,
     });
     mutateElement(container, {
       boundElements: (container.boundElements || []).concat({
@@ -296,6 +297,7 @@ export const actionWrapTextInContainer = register({
             verticalAlign: VERTICAL_ALIGN.MIDDLE,
             boundElements: null,
             textAlign: TEXT_ALIGN.CENTER,
+            autoResize: true,
           },
           false,
         );

packages/excalidraw/actions/actionProperties.tsx

@@ -167,7 +167,7 @@ const offsetElementAfterFontResize = (
   prevElement: ExcalidrawTextElement,
   nextElement: ExcalidrawTextElement,
 ) => {
-  if (isBoundToContainer(nextElement)) {
+  if (isBoundToContainer(nextElement) || !nextElement.autoResize) {
     return nextElement;
   }
   return mutateElement(

packages/excalidraw/actions/actionTextAutoResize.ts

@@ -0,0 +1,48 @@
+import { isTextElement } from "../element";
+import { newElementWith } from "../element/mutateElement";
+import { measureText } from "../element/textElement";
+import { getSelectedElements } from "../scene";
+import { StoreAction } from "../store";
+import type { AppClassProperties } from "../types";
+import { getFontString } from "../utils";
+import { register } from "./register";
+
+export const actionTextAutoResize = register({
+  name: "autoResize",
+  label: "labels.autoResize",
+  icon: null,
+  trackEvent: { category: "element" },
+  predicate: (elements, appState, _: unknown, app: AppClassProperties) => {
+    const selectedElements = getSelectedElements(elements, appState);
+    return (
+      selectedElements.length === 1 &&
+      isTextElement(selectedElements[0]) &&
+      !selectedElements[0].autoResize
+    );
+  },
+  perform: (elements, appState, _, app) => {
+    const selectedElements = getSelectedElements(elements, appState);
+
+    return {
+      appState,
+      elements: elements.map((element) => {
+        if (element.id === selectedElements[0].id && isTextElement(element)) {
+          const metrics = measureText(
+            element.originalText,
+            getFontString(element),
+            element.lineHeight,
+          );
+
+          return newElementWith(element, {
+            autoResize: true,
+            width: metrics.width,
+            height: metrics.height,
+            text: element.originalText,
+          });
+        }
+        return element;
+      }),
+      storeAction: StoreAction.CAPTURE,
+    };
+  },
+});

packages/excalidraw/actions/types.ts

@@ -134,7 +134,8 @@ export type ActionName =
   | "setEmbeddableAsActiveTool"
   | "createContainerFromText"
   | "wrapTextInContainer"
-  | "commandPalette";
+  | "commandPalette"
+  | "autoResize";
 
 export type PanelComponentProps = {
   elements: readonly ExcalidrawElement[];