fix: handle missing schemaState in migration

Co-authored-by: Anvi <anvikudaraya417@gmail.com>
Co-authored-by: Chris Tangonan <ctangonan123@gmail.com>

.env.development

@@ -1,3 +1,5 @@
+MODE="development"
+
 VITE_APP_BACKEND_V2_GET_URL=https://json-dev.excalidraw.com/api/v2/
 VITE_APP_BACKEND_V2_POST_URL=https://json-dev.excalidraw.com/api/v2/post/
 
@@ -10,7 +12,7 @@ VITE_APP_WS_SERVER_URL=http://localhost:3002
 VITE_APP_PLUS_LP=https://plus.excalidraw.com
 VITE_APP_PLUS_APP=http://localhost:3000
 
-VITE_APP_AI_BACKEND=http://localhost:3015
+VITE_APP_AI_BACKEND=http://localhost:3016
 
 VITE_APP_FIREBASE_CONFIG='{"apiKey":"AIzaSyCMkxA60XIW8KbqMYL7edC4qT5l4qHX2h8","authDomain":"excalidraw-oss-dev.firebaseapp.com","projectId":"excalidraw-oss-dev","storageBucket":"excalidraw-oss-dev.appspot.com","messagingSenderId":"664559512677","appId":"1:664559512677:web:a385181f2928d328a7aa8c"}'
 
@@ -25,7 +27,7 @@ VITE_APP_ENABLE_TRACKING=true
 FAST_REFRESH=false
 
 # The port the run the dev server
-VITE_APP_PORT=3000
+VITE_APP_PORT=3001
 
 #Debug flags
 

.env.production

@@ -1,3 +1,5 @@
+MODE="production"
+
 VITE_APP_BACKEND_V2_GET_URL=https://json.excalidraw.com/api/v2/
 VITE_APP_BACKEND_V2_POST_URL=https://json.excalidraw.com/api/v2/post/
 

.github/copilot-instructions.md

@@ -0,0 +1,45 @@
+# Project coding standards
+
+## Generic Communication Guidelines
+
+- Be succint and be aware that expansive generative AI answers are costly and slow
+- Avoid providing explanations, trying to teach unless asked for, your chat partner is an expert
+- Stop apologising if corrected, just provide the correct information or code
+- Prefer code unless asked for explanation
+- Stop summarizing what you've changed after modifications unless asked for
+
+## TypeScript Guidelines
+
+- Use TypeScript for all new code
+- Where possible, prefer implementations without allocation
+- When there is an option, opt for more performant solutions and trade RAM usage for less CPU cycles
+- Prefer immutable data (const, readonly)
+- Use optional chaining (?.) and nullish coalescing (??) operators
+
+## React Guidelines
+
+- Use functional components with hooks
+- Follow the React hooks rules (no conditional hooks)
+- Keep components small and focused
+- Use CSS modules for component styling
+
+## Naming Conventions
+
+- Use PascalCase for component names, interfaces, and type aliases
+- Use camelCase for variables, functions, and methods
+- Use ALL_CAPS for constants
+
+## Error Handling
+
+- Use try/catch blocks for async operations
+- Implement proper error boundaries in React components
+- Always log errors with contextual information
+
+## Testing
+
+- Always attempt to fix #problems
+- Always offer to run `yarn test:app` in the project root after modifications are complete and attempt fixing the issues reported
+
+## Types
+
+- Always include `packages/math/src/types.ts` in the context when your write math related code and always use the Point type instead of { x, y}

.github/workflows/autorelease-excalidraw.yml

@@ -12,10 +12,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 2
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Set up publish access
         run: |
           npm config set //registry.npmjs.org/:_authToken ${NPM_TOKEN}
@@ -24,4 +24,4 @@ jobs:
       - name: Auto release
         run: |
           yarn add @actions/core -W
-          yarn autorelease
+          yarn release --tag=next --non-interactive

.github/workflows/autorelease-preview.yml

@@ -1,55 +0,0 @@
-name: Auto release excalidraw preview
-on:
-  issue_comment:
-    types: [created, edited]
-
-jobs:
-  Auto-release-excalidraw-preview:
-    name: Auto release preview
-    if: github.event.comment.body == '@excalibot trigger release' && github.event.issue.pull_request
-    runs-on: ubuntu-latest
-    steps:
-      - name: React to release comment
-        uses: peter-evans/create-or-update-comment@v1
-        with:
-          token: ${{ secrets.PUSH_TRANSLATIONS_COVERAGE_PAT }}
-          comment-id: ${{ github.event.comment.id }}
-          reactions: "+1"
-      - name: Get PR SHA
-        id: sha
-        uses: actions/github-script@v4
-        with:
-          result-encoding: string
-          script: |
-            const { owner, repo, number } = context.issue;
-            const pr = await github.pulls.get({
-              owner,
-              repo,
-              pull_number: number,
-            });
-            return pr.data.head.sha
-      - uses: actions/checkout@v2
-        with:
-          ref: ${{ steps.sha.outputs.result }}
-          fetch-depth: 2
-      - name: Setup Node.js 18.x
-        uses: actions/setup-node@v2
-        with:
-          node-version: 18.x
-      - name: Set up publish access
-        run: |
-          npm config set //registry.npmjs.org/:_authToken ${NPM_TOKEN}
-        env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-      - name: Auto release preview
-        id: "autorelease"
-        run: |
-          yarn add @actions/core -W
-          yarn autorelease preview ${{ github.event.issue.number }}
-      - name: Post comment post release
-        if: always()
-        uses: peter-evans/create-or-update-comment@v1
-        with:
-          token: ${{ secrets.PUSH_TRANSLATIONS_COVERAGE_PAT }}
-          issue-number: ${{ github.event.issue.number }}
-          body: "@${{ github.event.comment.user.login }} ${{ steps.autorelease.outputs.result }}"

.github/workflows/lint.yml

@@ -9,10 +9,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Install and lint
         run: |

.github/workflows/locales-coverage.yml

@@ -14,10 +14,10 @@ jobs:
         with:
           token: ${{ secrets.PUSH_TRANSLATIONS_COVERAGE_PAT }}
 
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Create report file
         run: |

.github/workflows/publish-docker.yml

@@ -17,9 +17,14 @@ jobs:
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Build and push
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v5
         with:
           context: .
           push: true
           tags: excalidraw/excalidraw:latest
+          platforms: linux/amd64, linux/arm64, linux/arm/v7

.github/workflows/sentry-production.yml

@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Install and build
         run: |
           yarn --frozen-lockfile
@@ -28,7 +28,7 @@ jobs:
           export SENTRY_RELEASE=$(sentry-cli releases propose-version)
           sentry-cli releases new $SENTRY_RELEASE --project $SENTRY_PROJECT
           sentry-cli releases set-commits --auto $SENTRY_RELEASE
-          sentry-cli releases files $SENTRY_RELEASE upload-sourcemaps --no-rewrite ./build/static/js/ --url-prefix "~/static/js"
+          sentry-cli sourcemaps upload --release $SENTRY_RELEASE --no-rewrite ./build/static/js/ --url-prefix "~/static/js"
           sentry-cli releases finalize $SENTRY_RELEASE
           sentry-cli releases deploys $SENTRY_RELEASE new -e production
         env:

.github/workflows/size-limit.yml

@@ -11,10 +11,10 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Install in packages/excalidraw
         run: yarn
         working-directory: packages/excalidraw

.github/workflows/test-coverage-pr.yml

@@ -14,7 +14,7 @@ jobs:
       - name: "Install Node"
         uses: actions/setup-node@v2
         with:
-          node-version: "18.x"
+          node-version: "20.x"
       - name: "Install Deps"
         run: yarn install
       - name: "Test Coverage"

.github/workflows/test.yml

@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Setup Node.js 18.x
+      - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Install and test
         run: |
           yarn install

.gitignore

@@ -25,4 +25,5 @@ packages/excalidraw/types
 coverage
 dev-dist
 html
-meta*.json
+meta*.json
+.claude

.nvmrc

@@ -1 +0,0 @@
-18

CLAUDE.md

@@ -0,0 +1,34 @@
+# CLAUDE.md
+
+## Project Structure
+
+Excalidraw is a **monorepo** with a clear separation between the core library and the application:
+
+- **`packages/excalidraw/`** - Main React component library published to npm as `@excalidraw/excalidraw`
+- **`excalidraw-app/`** - Full-featured web application (excalidraw.com) that uses the library
+- **`packages/`** - Core packages: `@excalidraw/common`, `@excalidraw/element`, `@excalidraw/math`, `@excalidraw/utils`
+- **`examples/`** - Integration examples (NextJS, browser script)
+
+## Development Workflow
+
+1. **Package Development**: Work in `packages/*` for editor features
+2. **App Development**: Work in `excalidraw-app/` for app-specific features
+3. **Testing**: Always run `yarn test:update` before committing
+4. **Type Safety**: Use `yarn test:typecheck` to verify TypeScript
+
+## Development Commands
+
+```bash
+yarn test:typecheck  # TypeScript type checking
+yarn test:update     # Run all tests (with snapshot updates)
+yarn fix             # Auto-fix formatting and linting issues
+```
+
+## Architecture Notes
+
+### Package System
+
+- Uses Yarn workspaces for monorepo management
+- Internal packages use path aliases (see `vitest.config.mts`)
+- Build system uses esbuild for packages, Vite for the app
+- TypeScript throughout with strict configuration

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:18 AS build
+FROM --platform=${BUILDPLATFORM} node:18 AS build
 
 WORKDIR /opt/node_app
 
@@ -6,13 +6,14 @@ COPY . .
 
 # do not ignore optional dependencies:
 # Error: Cannot find module @rollup/rollup-linux-x64-gnu
-RUN yarn --network-timeout 600000
+RUN --mount=type=cache,target=/root/.cache/yarn \
+    npm_config_target_arch=${TARGETARCH} yarn --network-timeout 600000
 
 ARG NODE_ENV=production
 
-RUN yarn build:app:docker
+RUN npm_config_target_arch=${TARGETARCH} yarn build:app:docker
 
-FROM nginx:1.27-alpine
+FROM --platform=${TARGETPLATFORM} nginx:1.27-alpine
 
 COPY --from=build /opt/node_app/excalidraw-app/build /usr/share/nginx/html
 

README.md

@@ -23,23 +23,17 @@
 <br />
 <p align="center">
   <a href="https://github.com/excalidraw/excalidraw/blob/master/LICENSE">
-    <img alt="Excalidraw is released under the MIT license." src="https://img.shields.io/badge/license-MIT-blue.svg"  />
+    <img alt="Excalidraw is released under the MIT license." src="https://img.shields.io/badge/license-MIT-blue.svg"  /></a>
-  </a>
   <a href="https://www.npmjs.com/package/@excalidraw/excalidraw">
-    <img alt="npm downloads/month" src="https://img.shields.io/npm/dm/@excalidraw/excalidraw"  />
+    <img alt="npm downloads/month" src="https://img.shields.io/npm/dm/@excalidraw/excalidraw"  /></a>
-  </a>
   <a href="https://docs.excalidraw.com/docs/introduction/contributing">
-    <img alt="PRs welcome!" src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat"  />
+    <img alt="PRs welcome!" src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat"  /></a>
-  </a>
   <a href="https://discord.gg/UexuTaE">
-    <img alt="Chat on Discord" src="https://img.shields.io/discord/723672430744174682?color=738ad6&label=Chat%20on%20Discord&logo=discord&logoColor=ffffff&widge=false"/>
+    <img alt="Chat on Discord" src="https://img.shields.io/discord/723672430744174682?color=738ad6&label=Chat%20on%20Discord&logo=discord&logoColor=ffffff&widge=false"/></a>
-  </a>
   <a href="https://deepwiki.com/excalidraw/excalidraw">
-    <img alt="Ask DeepWiki" src="https://deepwiki.com/badge.svg" />
+    <img alt="Ask DeepWiki" src="https://deepwiki.com/badge.svg" /></a>
-  </a>
   <a href="https://twitter.com/excalidraw">
-    <img alt="Follow Excalidraw on Twitter" src="https://img.shields.io/twitter/follow/excalidraw.svg?label=follow+@excalidraw&style=social&logo=twitter"/>
+    <img alt="Follow Excalidraw on Twitter" src="https://img.shields.io/twitter/follow/excalidraw.svg?label=follow+@excalidraw&style=social&logo=twitter"/></a>
-  </a>
 </p>
 
 <div align="center">

dev-docs/docs/@excalidraw/excalidraw/api/children-components/footer.mdx

@@ -9,7 +9,7 @@ You will need to import the `Footer` component from the package and wrap your co
 ```jsx live
 function App() {
   return (
-    <div style={{ height: "500px"}}>
+    <div style={{ height: "500px" }}>
       <Excalidraw>
         <Footer>
           <button
@@ -27,19 +27,19 @@ function App() {
 
 This will only work for `Desktop` devices.
 
-For `mobile` you will need to render it inside the [MainMenu](#mainmenu). You can use the [`useDevice`](#useDevice) hook to check the type of device, this will be available only inside the `children` of `Excalidraw` component.
+For `mobile` you will need to render it inside the [MainMenu](#mainmenu). You can use the [`useEditorInterface`](#useEditorInterface) hook to check the type of device, this will be available only inside the `children` of `Excalidraw` component.
 
 Open the `Menu` in the below playground and you will see the `custom footer` rendered.
 
 ```jsx live noInline
 const MobileFooter = ({}) => {
-  const device = useDevice();
+  const editorInterface = useEditorInterface();
-  if (device.editor.isMobile) {
+  if (editorInterface.formFactor === "phone") {
     return (
       <Footer>
         <button
           className="custom-footer"
-          style= {{ marginLeft: '20px', height: '2rem'}}
+          style={{ marginLeft: "20px", height: "2rem" }}
           onClick={() => alert("This is custom footer in mobile menu")}
         >
           custom footer

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

@@ -363,13 +363,7 @@ This API has the below signature. It sets the `tool` passed in param as the acti
 ```ts
 (
   tool: (
-    | (
+    | { type: ToolType }
-        | { type: Exclude<ToolType, "image"> }
-        | {
-            type: Extract<ToolType, "image">;
-            insertOnCanvasDirectly?: boolean;
-          }
-      )
     | { type: "custom"; customType: string }
   ) & { locked?: boolean },
 ) => {};
@@ -377,7 +371,7 @@ This API has the below signature. It sets the `tool` passed in param as the acti
 
 | Name | Type | Default | Description |
 | --- | --- | --- | --- |
-| `type` | [ToolType](https://github.com/excalidraw/excalidraw/blob/master/packages/excalidraw/types.ts#L91) | `selection` | The tool type which should be set as active tool. When setting `image` as active tool, the insertion onto canvas when using image tool is disabled by default, so you can enable it by setting `insertOnCanvasDirectly` to `true` |
+| `type` | [ToolType](https://github.com/excalidraw/excalidraw/blob/master/packages/excalidraw/types.ts#L91) | `selection` | The tool type which should be set as active tool |
 | `locked` | `boolean` | `false` | Indicates whether the the active tool should be locked. It behaves the same way when using the `lock` tool in the editor interface |
 
 ## setCursor

dev-docs/docs/@excalidraw/excalidraw/api/utils/utils-intro.md

@@ -292,7 +292,7 @@ viewportCoordsToSceneCoords(&#123; clientX: number, clientY: number },<br/>&nbsp
   appState: <a href="https://github.com/excalidraw/excalidraw/blob/master/packages/excalidraw/types.ts#L95">AppState</a><br/>): &#123;x: number, y: number}
 </pre>
 
-### useDevice
+### useEditorInterface
 
 This hook can be used to check the type of device which is being used. It can only be used inside the `children` of `Excalidraw` component.
 
@@ -300,8 +300,8 @@ Open the `main menu` in the below example to view the footer.
 
 ```jsx live noInline
 const MobileFooter = ({}) => {
-  const device = useDevice();
+  const editorInterface = useEditorInterface();
-  if (device.editor.isMobile) {
+  if (editorInterface.formFactor === "phone") {
     return (
       <Footer>
         <button
@@ -336,12 +336,20 @@ render(<App />);
 The `device` has the following `attributes`, some grouped into `viewport` and `editor` objects, per context.
 
 | Name | Type | Description |
-| --- | --- | --- |
+| ---- | ---- | ----------- |
-| `viewport.isMobile` | `boolean` | Set to `true` when viewport is in `mobile` breakpoint |
+
-| `viewport.isLandscape` | `boolean` | Set to `true` when the viewport is in `landscape` mode |
+The `EditorInterface` object has the following properties:
-| `editor.canFitSidebar` | `boolean` | Set to `true` if there's enough space to fit the `sidebar` |
+
-| `editor.isMobile` | `boolean` | Set to `true` when editor container is in `mobile` breakpoint |
+| Name | Type | Description |
-| `isTouchScreen` | `boolean` | Set to `true` for `touch` when touch event detected |
+| --- | --- | --- | --- | --- | --- |
+| `formFactor` | `'phone' | 'tablet' | 'desktop'` | Indicates the device type based on screen size |
+| `desktopUIMode` | `'compact' | 'full'` | UI mode for desktop form factor |
+| `userAgent.raw` | `string` | Raw user agent string |
+| `userAgent.isMobileDevice` | `boolean` | True if device is mobile |
+| `userAgent.platform` | `'ios' | 'android' | 'other' | 'unknown'` | Device platform |
+| `isTouchScreen` | `boolean` | True if touch events are detected |
+| `canFitSidebar` | `boolean` | True if sidebar can fit in the viewport |
+| `isLandscape` | `boolean` | True if viewport is in landscape mode |
 
 ### i18n
 

dev-docs/docs/@excalidraw/excalidraw/development.mdx

@@ -28,32 +28,12 @@ To start the example app using the `@excalidraw/excalidraw` package, follow the
 
 ## Releasing
 
-### Create a test release
-
-You can create a test release by posting the below comment in your pull request:
-
-```bash
-@excalibot trigger release
-```
-
-Once the version is released `@excalibot` will post a comment with the release version.
-
 ### Creating a production release
 
 To release the next stable version follow the below steps:
 
 ```bash
-yarn prerelease:excalidraw
+yarn release --tag=latest --version=0.19.0
 ```
 
-You need to pass the `version` for which you want to create the release. This will make the changes needed before making the release like updating `package.json`, `changelog` and more.
+You will need to pass the `latest` tag with `version` for which you want to create the release. This will make the changes needed before publishing the packages into NPM, like updating dependencies of all `@excalidraw/*` packages, generating new entries in `CHANGELOG.md` and more.
-
-The next step is to run the `release` script:
-
-```bash
-yarn release:excalidraw
-```
-
-This will publish the package.
-
-Right now there are two steps to create a production release but once this works fine these scripts will be combined and more automation will be done.

dev-docs/docs/@excalidraw/excalidraw/integration.mdx

@@ -38,6 +38,8 @@ If you want to only import `Excalidraw` component you can do :point_down:
 
 ```jsx showLineNumbers
 import dynamic from "next/dynamic";
+import "@excalidraw/excalidraw/index.css";
+
 const Excalidraw = dynamic(
   async () => (await import("@excalidraw/excalidraw")).Excalidraw,
   {

dev-docs/src/theme/ReactLiveScope/index.js

@@ -33,6 +33,7 @@ const ExcalidrawScope = {
   initialData,
   useI18n: ExcalidrawComp.useI18n,
   convertToExcalidrawElements: ExcalidrawComp.convertToExcalidrawElements,
+  CaptureUpdateAction: ExcalidrawComp.CaptureUpdateAction,
 };
 
 export default ExcalidrawScope;

docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 services:
   excalidraw:
     build:

examples/with-nextjs/package.json

@@ -3,7 +3,8 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "build:workspace": "yarn workspace @excalidraw/excalidraw run build:esm && yarn copy:assets",
+    "build:packages": "yarn --cwd ../../ build:packages",
+    "build:workspace": "yarn build:packages && yarn copy:assets",
     "copy:assets": "cp -r ../../packages/excalidraw/dist/prod/fonts ./public",
     "dev": "yarn build:workspace && next dev -p 3005",
     "build": "yarn build:workspace && next build",

examples/with-script-in-browser/components/MobileFooter.tsx

@@ -12,10 +12,10 @@ const MobileFooter = ({
   excalidrawAPI: ExcalidrawImperativeAPI;
   excalidrawLib: typeof TExcalidraw;
 }) => {
-  const { useDevice, Footer } = excalidrawLib;
+  const { useEditorInterface, Footer } = excalidrawLib;
 
-  const device = useDevice();
+  const editorInterface = useEditorInterface();
-  if (device.editor.isMobile) {
+  if (editorInterface.formFactor === "phone") {
     return (
       <Footer>
         <CustomFooter

examples/with-script-in-browser/package.json

@@ -17,6 +17,6 @@
     "build": "vite build",
     "preview": "vite preview --port 5002",
     "build:preview": "yarn build && yarn preview",
-    "build:package": "yarn workspace @excalidraw/excalidraw run build:esm"
+    "build:packages": "yarn --cwd ../../ build:packages"
   }
 }

examples/with-script-in-browser/vercel.json

@@ -1,5 +1,5 @@
 {
   "outputDirectory": "dist",
   "installCommand": "yarn install",
-  "buildCommand": "yarn build:package && yarn build"
+  "buildCommand": "yarn build:packages && yarn build"
 }

excalidraw-app/App.tsx

@@ -4,6 +4,7 @@ import {
   TTDDialogTrigger,
   CaptureUpdateAction,
   reconcileElements,
+  useEditorInterface,
 } from "@excalidraw/excalidraw";
 import { trackEvent } from "@excalidraw/excalidraw/analytics";
 import { getDefaultAppState } from "@excalidraw/excalidraw/appState";
@@ -20,7 +21,6 @@ import {
   APP_NAME,
   EVENT,
   THEME,
-  TITLE_TIMEOUT,
   VERSION_TIMEOUT,
   debounce,
   getVersion,
@@ -48,7 +48,11 @@ import {
   youtubeIcon,
 } from "@excalidraw/excalidraw/components/icons";
 import { isElementLink } from "@excalidraw/element";
-import { restore, restoreAppState } from "@excalidraw/excalidraw/data/restore";
+import {
+  bumpElementVersions,
+  restoreAppState,
+  restoreElements,
+} from "@excalidraw/excalidraw/data/restore";
 import { newElementWith } from "@excalidraw/element";
 import { isInitializedImageElement } from "@excalidraw/element";
 import clsx from "clsx";
@@ -105,8 +109,8 @@ import { TopErrorBoundary } from "./components/TopErrorBoundary";
 import {
   exportToBackend,
   getCollaborationLinkData,
+  importFromBackend,
   isCollaborationLink,
-  loadScene,
 } from "./data";
 
 import { updateStaleImageStatuses } from "./data/FileManager";
@@ -120,6 +124,7 @@ import {
   LibraryIndexedDBAdapter,
   LibraryLocalStorageMigrationAdapter,
   LocalData,
+  localStorageQuotaExceededAtom,
 } from "./data/LocalData";
 import { isBrowserStorageStateNewer } from "./data/tabSync";
 import { ShareDialog, shareDialogStateAtom } from "./share/ShareDialog";
@@ -137,6 +142,9 @@ import { ExcalidrawPlusIframeExport } from "./ExcalidrawPlusIframeExport";
 
 import "./index.scss";
 
+import { ExcalidrawPlusPromoBanner } from "./components/ExcalidrawPlusPromoBanner";
+import { AppSidebar } from "./components/AppSidebar";
+
 import type { CollabAPI } from "./collab/Collab";
 
 polyfill();
@@ -220,9 +228,20 @@ const initializeScene = async (opts: {
 
   const localDataState = importFromLocalStorage();
 
-  let scene: RestoredDataState & {
+  let scene: Omit<
+    RestoredDataState,
+    // we're not storing files in the scene database/localStorage, and instead
+    // fetch them async from a different store
+    "files"
+  > & {
     scrollToContent?: boolean;
-  } = await loadScene(null, null, localDataState);
+  } = {
+    elements: restoreElements(localDataState?.elements, null, {
+      repairBindings: true,
+      deleteInvisibleElements: true,
+    }),
+    appState: restoreAppState(localDataState?.appState, null),
+  };
 
   let roomLinkData = getCollaborationLinkData(window.location.href);
   const isExternalScene = !!(id || jsonBackendMatch || roomLinkData);
@@ -236,11 +255,26 @@ const initializeScene = async (opts: {
       (await openConfirmModal(shareableLinkConfirmDialog))
     ) {
       if (jsonBackendMatch) {
-        scene = await loadScene(
+        const imported = await importFromBackend(
           jsonBackendMatch[1],
           jsonBackendMatch[2],
-          localDataState,
         );
+
+        scene = {
+          elements: bumpElementVersions(
+            restoreElements(imported.elements, null, {
+              repairBindings: true,
+              deleteInvisibleElements: true,
+            }),
+            scene.elements,
+          ),
+          appState: restoreAppState(
+            imported.appState,
+            // local appState when importing from backend to ensure we restore
+            // localStorage user settings which we do not persist on server.
+            localDataState?.appState,
+          ),
+        };
       }
       scene.scrollToContent = true;
       if (!roomLinkData) {
@@ -342,6 +376,8 @@ const ExcalidrawWrapper = () => {
 
   const [langCode, setLangCode] = useAppLangCode();
 
+  const editorInterface = useEditorInterface();
+
   // initial state
   // ---------------------------------------------------------------------------
 
@@ -490,8 +526,10 @@ const ExcalidrawWrapper = () => {
           loadImages(data);
           if (data.scene) {
             excalidrawAPI.updateScene({
-              ...data.scene,
+              elements: restoreElements(data.scene.elements, null, {
-              ...restore(data.scene, null, null, { repairBindings: true }),
+                repairBindings: true,
+              }),
+              appState: restoreAppState(data.scene.appState, null),
               captureUpdate: CaptureUpdateAction.IMMEDIATELY,
             });
           }
@@ -499,11 +537,6 @@ const ExcalidrawWrapper = () => {
       }
     };
 
-    const titleTimeout = setTimeout(
-      () => (document.title = APP_NAME),
-      TITLE_TIMEOUT,
-    );
-
     const syncData = debounce(() => {
       if (isTestEnv()) {
         return;
@@ -518,7 +551,11 @@ const ExcalidrawWrapper = () => {
           const username = importUsernameFromLocalStorage();
           setLangCode(getPreferredLanguage());
           excalidrawAPI.updateScene({
-            ...localDataState,
+            elements: restoreElements(localDataState?.elements, null, {
+              repairBindings: true,
+              deleteInvisibleElements: true,
+            }),
+            appState: restoreAppState(localDataState?.appState, null),
             captureUpdate: CaptureUpdateAction.NEVER,
           });
           LibraryIndexedDBAdapter.load().then((data) => {
@@ -594,7 +631,6 @@ const ExcalidrawWrapper = () => {
         visibilityChange,
         false,
       );
-      clearTimeout(titleTimeout);
     };
   }, [isCollabDisabled, collabAPI, excalidrawAPI, setLangCode]);
 
@@ -669,8 +705,8 @@ const ExcalidrawWrapper = () => {
       debugRenderer(
         debugCanvasRef.current,
         appState,
+        elements,
         window.devicePixelRatio,
-        () => forceRefresh((prev) => !prev),
       );
     }
   };
@@ -734,6 +770,8 @@ const ExcalidrawWrapper = () => {
 
   const isOffline = useAtomValue(isOfflineAtom);
 
+  const localStorageQuotaExceeded = useAtomValue(localStorageQuotaExceededAtom);
+
   const onCollabDialogOpen = useCallback(
     () => setShareDialogState({ isOpen: true, type: "collaborationOnly" }),
     [setShareDialogState],
@@ -852,14 +890,22 @@ const ExcalidrawWrapper = () => {
           if (isMobile || !collabAPI || isCollabDisabled) {
             return null;
           }
+
           return (
-            <div className="top-right-ui">
+            <div className="excalidraw-ui-top-right">
+              {excalidrawAPI?.getEditorInterface().formFactor === "desktop" && (
+                <ExcalidrawPlusPromoBanner
+                  isSignedIn={isExcalidrawPlusSignedUser}
+                />
+              )}
+
               {collabError.message && <CollabError collabError={collabError} />}
               <LiveCollaborationTrigger
                 isCollaborating={isCollaborating}
                 onSelect={() =>
                   setShareDialogState({ isOpen: true, type: "share" })
                 }
+                editorInterface={editorInterface}
               />
             </div>
           );
@@ -908,10 +954,15 @@ const ExcalidrawWrapper = () => {
 
         <TTDDialogTrigger />
         {isCollaborating && isOffline && (
-          <div className="collab-offline-warning">
+          <div className="alertalert--warning">
             {t("alerts.collabOfflineWarning")}
           </div>
         )}
+        {localStorageQuotaExceeded && (
+          <div className="alert alert--danger">
+            {t("alerts.localStorageQuotaExceeded")}
+          </div>
+        )}
         {latestShareableLink && (
           <ShareableLinkDialog
             link={latestShareableLink}
@@ -940,6 +991,8 @@ const ExcalidrawWrapper = () => {
           }}
         />
 
+        <AppSidebar />
+
         {errorMessage && (
           <ErrorDialog onClose={() => setErrorMessage("")}>
             {errorMessage}

excalidraw-app/app_constants.ts

@@ -8,7 +8,8 @@ export const SYNC_BROWSER_TABS_TIMEOUT = 50;
 export const CURSOR_SYNC_TIMEOUT = 33; // ~30fps
 export const DELETED_ELEMENT_TIMEOUT = 24 * 60 * 60 * 1000; // 1 day
 
-export const FILE_UPLOAD_MAX_BYTES = 3 * 1024 * 1024; // 3 MiB
+// should be aligned with MAX_ALLOWED_FILE_BYTES
+export const FILE_UPLOAD_MAX_BYTES = 4 * 1024 * 1024; // 4 MiB
 // 1 year (https://stackoverflow.com/a/25201898/927631)
 export const FILE_CACHE_MAX_AGE_SEC = 31536000;
 
@@ -45,6 +46,7 @@ export const STORAGE_KEYS = {
   VERSION_FILES: "version-files",
 
   IDB_LIBRARY: "excalidraw-library",
+  IDB_TTD_CHATS: "excalidraw-ttd-chats",
 
   // do not use apart from migrations
   __LEGACY_LOCAL_STORAGE_LIBRARY: "excalidraw-library",

excalidraw-app/collab/Collab.tsx

@@ -6,7 +6,7 @@ import {
   reconcileElements,
 } from "@excalidraw/excalidraw";
 import { ErrorDialog } from "@excalidraw/excalidraw/components/ErrorDialog";
-import { APP_NAME, EVENT } from "@excalidraw/common";
+import { APP_NAME, cloneJSON, EVENT, toBrandedType } from "@excalidraw/common";
 import {
   IDLE_THRESHOLD,
   ACTIVE_THRESHOLD,
@@ -29,6 +29,8 @@ import { withBatchedUpdates } from "@excalidraw/excalidraw/reactUtils";
 import throttle from "lodash.throttle";
 import { PureComponent } from "react";
 
+import { bumpElementVersions } from "@excalidraw/excalidraw/data/restore";
+
 import type {
   ReconciledExcalidrawElement,
   RemoteExcalidrawElement,
@@ -311,6 +313,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   saveCollabRoomToFirebase = async (
     syncableElements: readonly SyncableExcalidrawElement[],
   ) => {
+    syncableElements = cloneJSON(syncableElements);
     try {
       const storedElements = await saveToFirebase(
         this.portal,
@@ -441,7 +444,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   };
 
   private decryptPayload = async (
-    iv: Uint8Array,
+    iv: Uint8Array<ArrayBuffer>,
     encryptedData: ArrayBuffer,
     decryptionKey: string,
   ): Promise<ValueOf<SocketUpdateDataSource>> => {
@@ -530,7 +533,10 @@ class Collab extends PureComponent<CollabProps, CollabState> {
       return null;
     }
 
-    if (!existingRoomLinkData) {
+    if (existingRoomLinkData) {
+      // when joining existing room, don't merge it with current scene data
+      this.excalidrawAPI.resetScene();
+    } else {
       const elements = this.excalidrawAPI.getSceneElements().map((element) => {
         if (isImageElement(element) && element.status === "saved") {
           return newElementWith(element, { status: "pending" });
@@ -559,7 +565,7 @@ class Collab extends PureComponent<CollabProps, CollabState> {
     // All socket listeners are moving to Portal
     this.portal.socket.on(
       "client-broadcast",
-      async (encryptedData: ArrayBuffer, iv: Uint8Array) => {
+      async (encryptedData: ArrayBuffer, iv: Uint8Array<ArrayBuffer>) => {
         if (!this.portal.roomKey) {
           return;
         }
@@ -576,7 +582,9 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           case WS_SUBTYPES.INIT: {
             if (!this.portal.socketInitialized) {
               this.initializeRoom({ fetchScene: false });
-              const remoteElements = decryptedData.payload.elements;
+              const remoteElements = toBrandedType<
+                readonly RemoteExcalidrawElement[]
+              >(decryptedData.payload.elements);
               const reconciledElements =
                 this._reconcileElements(remoteElements);
               this.handleRemoteSceneUpdate(reconciledElements);
@@ -590,7 +598,11 @@ class Collab extends PureComponent<CollabProps, CollabState> {
           }
           case WS_SUBTYPES.UPDATE:
             this.handleRemoteSceneUpdate(
-              this._reconcileElements(decryptedData.payload.elements),
+              this._reconcileElements(
+                toBrandedType<readonly RemoteExcalidrawElement[]>(
+                  decryptedData.payload.elements,
+                ),
+              ),
             );
             break;
           case WS_SUBTYPES.MOUSE_LOCATION: {
@@ -739,17 +751,28 @@ class Collab extends PureComponent<CollabProps, CollabState> {
   };
 
   private _reconcileElements = (
-    remoteElements: readonly ExcalidrawElement[],
+    remoteElements: readonly RemoteExcalidrawElement[],
   ): ReconciledExcalidrawElement[] => {
-    const localElements = this.getSceneElementsIncludingDeleted();
     const appState = this.excalidrawAPI.getAppState();
-    const restoredRemoteElements = restoreElements(remoteElements, null);
+
-    const reconciledElements = reconcileElements(
+    const existingElements = this.getSceneElementsIncludingDeleted();
-      localElements,
+
-      restoredRemoteElements as RemoteExcalidrawElement[],
+    // NOTE ideally we restore _after_ reconciliation but we can't do that
+    // as we'd regenerate even elements such as appState.newElement which would
+    // break the state
+    remoteElements = restoreElements(remoteElements, existingElements);
+
+    let reconciledElements = reconcileElements(
+      existingElements,
+      remoteElements,
       appState,
     );
 
+    reconciledElements = bumpElementVersions(
+      reconciledElements,
+      existingElements,
+    );
+
     // Avoid broadcasting to the rest of the collaborators the scene
     // we just received!
     // Note: this needs to be set before updating the scene as it

excalidraw-app/components/AI.tsx

@@ -4,12 +4,15 @@ import {
   getTextFromElements,
   MIME_TYPES,
   TTDDialog,
+  TTDStreamFetch,
 } from "@excalidraw/excalidraw";
 import { getDataURL } from "@excalidraw/excalidraw/data/blob";
 import { safelyParseJSON } from "@excalidraw/common";
 
 import type { ExcalidrawImperativeAPI } from "@excalidraw/excalidraw/types";
 
+import { TTDIndexedDBAdapter } from "../data/TTDStorage";
+
 export const AIComponents = ({
   excalidrawAPI,
 }: {
@@ -99,61 +102,23 @@ export const AIComponents = ({
       />
 
       <TTDDialog
-        onTextSubmit={async (input) => {
+        onTextSubmit={async (props) => {
-          try {
+          const { onChunk, onStreamCreated, signal, messages } = props;
-            const response = await fetch(
-              `${
-                import.meta.env.VITE_APP_AI_BACKEND
-              }/v1/ai/text-to-diagram/generate`,
-              {
-                method: "POST",
-                headers: {
-                  Accept: "application/json",
-                  "Content-Type": "application/json",
-                },
-                body: JSON.stringify({ prompt: input }),
-              },
-            );
 
-            const rateLimit = response.headers.has("X-Ratelimit-Limit")
+          const result = await TTDStreamFetch({
-              ? parseInt(response.headers.get("X-Ratelimit-Limit") || "0", 10)
+            url: `${
-              : undefined;
+              import.meta.env.VITE_APP_AI_BACKEND
+            }/v1/ai/text-to-diagram/chat-streaming`,
+            messages,
+            onChunk,
+            onStreamCreated,
+            extractRateLimits: true,
+            signal,
+          });
 
-            const rateLimitRemaining = response.headers.has(
+          return result;
-              "X-Ratelimit-Remaining",
-            )
-              ? parseInt(
-                  response.headers.get("X-Ratelimit-Remaining") || "0",
-                  10,
-                )
-              : undefined;
-
-            const json = await response.json();
-
-            if (!response.ok) {
-              if (response.status === 429) {
-                return {
-                  rateLimit,
-                  rateLimitRemaining,
-                  error: new Error(
-                    "Too many requests today, please try again tomorrow!",
-                  ),
-                };
-              }
-
-              throw new Error(json.message || "Generation failed...");
-            }
-
-            const generatedResponse = json.generatedResponse;
-            if (!generatedResponse) {
-              throw new Error("Generation failed...");
-            }
-
-            return { generatedResponse, rateLimit, rateLimitRemaining };
-          } catch (err: any) {
-            throw new Error("Request failed");
-          }
         }}
+        persistenceAdapter={TTDIndexedDBAdapter}
       />
     </>
   );

excalidraw-app/components/AppFooter.tsx

@@ -5,7 +5,6 @@ import { isExcalidrawPlusSignedUser } from "../app_constants";
 
 import { DebugFooter, isVisualDebuggerEnabled } from "./DebugCanvas";
 import { EncryptedIcon } from "./EncryptedIcon";
-import { ExcalidrawPlusAppLink } from "./ExcalidrawPlusAppLink";
 
 export const AppFooter = React.memo(
   ({ onChange }: { onChange: () => void }) => {
@@ -19,11 +18,7 @@ export const AppFooter = React.memo(
           }}
         >
           {isVisualDebuggerEnabled() && <DebugFooter onChange={onChange} />}
-          {isExcalidrawPlusSignedUser ? (
+          {!isExcalidrawPlusSignedUser && <EncryptedIcon />}
-            <ExcalidrawPlusAppLink />
-          ) : (
-            <EncryptedIcon />
-          )}
         </div>
       </Footer>
     );

excalidraw-app/components/AppMainMenu.tsx

@@ -62,7 +62,7 @@ export const AppMainMenu: React.FC<{
       {isDevEnv() && (
         <MainMenu.Item
           icon={eyeIcon}
-          onClick={() => {
+          onSelect={() => {
             if (window.visualDebug) {
               delete window.visualDebug;
               saveDebugState({ enabled: false });
@@ -77,6 +77,7 @@ export const AppMainMenu: React.FC<{
         </MainMenu.Item>
       )}
       <MainMenu.Separator />
+      <MainMenu.DefaultItems.Preferences />
       <MainMenu.DefaultItems.ToggleTheme
         allowSystemTheme
         theme={props.theme}

excalidraw-app/components/AppSidebar.scss

@@ -0,0 +1,36 @@
+.excalidraw {
+  .app-sidebar-promo-container {
+    padding: 0.75rem;
+    display: flex;
+    flex-direction: column;
+    text-align: center;
+    gap: 1rem;
+    flex: 1 1 auto;
+  }
+
+  .app-sidebar-promo-image {
+    margin: 1rem 0;
+
+    height: 16.25rem;
+    background-size: contain;
+    background-position: center;
+    background-repeat: no-repeat;
+
+    background-image: radial-gradient(
+        circle,
+        transparent 60%,
+        var(--sidebar-bg-color) 100%
+      ),
+      var(--image-source);
+
+    display: flex;
+  }
+
+  .app-sidebar-promo-text {
+    padding: 0 2rem;
+  }
+
+  .link-button {
+    margin: 0 auto;
+  }
+}

excalidraw-app/components/AppSidebar.tsx

@@ -0,0 +1,79 @@
+import { DefaultSidebar, Sidebar, THEME } from "@excalidraw/excalidraw";
+import {
+  messageCircleIcon,
+  presentationIcon,
+} from "@excalidraw/excalidraw/components/icons";
+import { LinkButton } from "@excalidraw/excalidraw/components/LinkButton";
+import { useUIAppState } from "@excalidraw/excalidraw/context/ui-appState";
+
+import "./AppSidebar.scss";
+
+export const AppSidebar = () => {
+  const { theme, openSidebar } = useUIAppState();
+
+  return (
+    <DefaultSidebar>
+      <DefaultSidebar.TabTriggers>
+        <Sidebar.TabTrigger
+          tab="comments"
+          style={{ opacity: openSidebar?.tab === "comments" ? 1 : 0.4 }}
+        >
+          {messageCircleIcon}
+        </Sidebar.TabTrigger>
+        <Sidebar.TabTrigger
+          tab="presentation"
+          style={{ opacity: openSidebar?.tab === "presentation" ? 1 : 0.4 }}
+        >
+          {presentationIcon}
+        </Sidebar.TabTrigger>
+      </DefaultSidebar.TabTriggers>
+      <Sidebar.Tab tab="comments">
+        <div className="app-sidebar-promo-container">
+          <div
+            className="app-sidebar-promo-image"
+            style={{
+              ["--image-source" as any]: `url(/oss_promo_comments_${
+                theme === THEME.DARK ? "dark" : "light"
+              }.jpg)`,
+              opacity: 0.7,
+            }}
+          />
+          <div className="app-sidebar-promo-text">
+            Make comments with Excalidraw+
+          </div>
+          <LinkButton
+            href={`${
+              import.meta.env.VITE_APP_PLUS_LP
+            }/plus?utm_source=excalidraw&utm_medium=app&utm_content=comments_promo#excalidraw-redirect`}
+          >
+            Sign up now
+          </LinkButton>
+        </div>
+      </Sidebar.Tab>
+      <Sidebar.Tab tab="presentation" className="px-3">
+        <div className="app-sidebar-promo-container">
+          <div
+            className="app-sidebar-promo-image"
+            style={{
+              ["--image-source" as any]: `url(/oss_promo_presentations_${
+                theme === THEME.DARK ? "dark" : "light"
+              }.svg)`,
+              backgroundSize: "60%",
+              opacity: 0.4,
+            }}
+          />
+          <div className="app-sidebar-promo-text">
+            Create presentations with Excalidraw+
+          </div>
+          <LinkButton
+            href={`${
+              import.meta.env.VITE_APP_PLUS_LP
+            }/plus?utm_source=excalidraw&utm_medium=app&utm_content=presentations_promo#excalidraw-redirect`}
+          >
+            Sign up now
+          </LinkButton>
+        </div>
+      </Sidebar.Tab>
+    </DefaultSidebar>
+  );
+};

excalidraw-app/components/AppWelcomeScreen.tsx

@@ -33,7 +33,15 @@ export const AppWelcomeScreen: React.FC<{
         return bit;
       });
   } else {
-    headingContent = t("welcomeScreen.app.center_heading");
+    headingContent = (
+      <>
+        {t("welcomeScreen.app.center_heading")}
+        <br />
+        {t("welcomeScreen.app.center_heading_line2")}
+        <br />
+        {t("welcomeScreen.app.center_heading_line3")}
+      </>
+    );
   }
 
   return (

excalidraw-app/components/DebugCanvas.tsx

@@ -8,8 +8,14 @@ import {
   getNormalizedCanvasDimensions,
 } from "@excalidraw/excalidraw/renderer/helpers";
 import { type AppState } from "@excalidraw/excalidraw/types";
-import { throttleRAF } from "@excalidraw/common";
+import { arrayToMap, throttleRAF } from "@excalidraw/common";
-import { useCallback, useImperativeHandle, useRef } from "react";
+import { useCallback } from "react";
+
+import {
+  getGlobalFixedPointForBindableElement,
+  isArrowElement,
+  isBindableElement,
+} from "@excalidraw/element";
 
 import {
   isLineSegment,
@@ -18,9 +24,20 @@ import {
 } from "@excalidraw/math";
 import { isCurve } from "@excalidraw/math/curve";
 
-import type { DebugElement } from "@excalidraw/excalidraw/visualdebug";
+import React from "react";
 
 import type { Curve } from "@excalidraw/math";
+import type {
+  DebugElement,
+  DebugPolygon,
+} from "@excalidraw/element/visualdebug";
+import type {
+  ElementsMap,
+  ExcalidrawArrowElement,
+  ExcalidrawBindableElement,
+  FixedPointBinding,
+  OrderedExcalidrawElement,
+} from "@excalidraw/element/types";
 
 import { STORAGE_KEYS } from "../app_constants";
 
@@ -61,6 +78,44 @@ const renderCubicBezier = (
   context.restore();
 };
 
+const renderPolygon = (
+  context: CanvasRenderingContext2D,
+  zoom: number,
+  polygon: DebugPolygon,
+  color: string,
+) => {
+  const { points, fill, close } = polygon;
+
+  if (points.length < 2) {
+    return;
+  }
+
+  context.save();
+  context.beginPath();
+  context.moveTo(points[0][0] * zoom, points[0][1] * zoom);
+  for (let i = 1; i < points.length; i += 1) {
+    context.lineTo(points[i][0] * zoom, points[i][1] * zoom);
+  }
+  if (close !== false) {
+    context.closePath();
+  }
+
+  if (fill) {
+    context.save();
+    context.globalAlpha = 0.15;
+    context.fillStyle = color;
+    context.fill();
+    context.restore();
+  }
+
+  context.strokeStyle = color;
+  context.stroke();
+  context.restore();
+};
+
+const isDebugPolygon = (data: DebugElement["data"]): data is DebugPolygon =>
+  (data as DebugPolygon).type === "polygon";
+
 const renderOrigin = (context: CanvasRenderingContext2D, zoom: number) => {
   context.strokeStyle = "#888";
   context.save();
@@ -73,6 +128,176 @@ const renderOrigin = (context: CanvasRenderingContext2D, zoom: number) => {
   context.save();
 };
 
+const _renderBinding = (
+  context: CanvasRenderingContext2D,
+  binding: FixedPointBinding,
+  elementsMap: ElementsMap,
+  zoom: number,
+  width: number,
+  height: number,
+  color: string,
+) => {
+  if (!binding.fixedPoint) {
+    console.warn("Binding must have a fixedPoint");
+    return;
+  }
+
+  const bindable = elementsMap.get(
+    binding.elementId,
+  ) as ExcalidrawBindableElement;
+  const [x, y] = getGlobalFixedPointForBindableElement(
+    binding.fixedPoint,
+    bindable,
+    elementsMap,
+  );
+
+  context.save();
+  context.strokeStyle = color;
+  context.lineWidth = 1;
+  context.beginPath();
+  context.moveTo(x * zoom, y * zoom);
+  context.bezierCurveTo(
+    x * zoom - width,
+    y * zoom - height,
+    x * zoom - width,
+    y * zoom + height,
+    x * zoom,
+    y * zoom,
+  );
+  context.stroke();
+  context.restore();
+};
+
+const _renderBindableBinding = (
+  binding: FixedPointBinding,
+  context: CanvasRenderingContext2D,
+  elementsMap: ElementsMap,
+  zoom: number,
+  width: number,
+  height: number,
+  color: string,
+) => {
+  const bindable = elementsMap.get(
+    binding.elementId,
+  ) as ExcalidrawBindableElement;
+  if (!binding.fixedPoint) {
+    console.warn("Binding must have a fixedPoint");
+    return;
+  }
+
+  const [x, y] = getGlobalFixedPointForBindableElement(
+    binding.fixedPoint,
+    bindable,
+    elementsMap,
+  );
+
+  context.save();
+  context.strokeStyle = color;
+  context.lineWidth = 1;
+  context.beginPath();
+  context.moveTo(x * zoom, y * zoom);
+  context.bezierCurveTo(
+    x * zoom + width,
+    y * zoom + height,
+    x * zoom + width,
+    y * zoom - height,
+    x * zoom,
+    y * zoom,
+  );
+  context.stroke();
+  context.restore();
+};
+
+const renderBindings = (
+  context: CanvasRenderingContext2D,
+  elements: readonly OrderedExcalidrawElement[],
+  zoom: number,
+) => {
+  const elementsMap = arrayToMap(elements);
+  const dim = 16;
+  elements.forEach((element) => {
+    if (element.isDeleted) {
+      return;
+    }
+
+    if (isArrowElement(element)) {
+      if (element.startBinding) {
+        if (
+          !elementsMap
+            .get(element.startBinding.elementId)
+            ?.boundElements?.find((e) => e.id === element.id)
+        ) {
+          return;
+        }
+
+        _renderBinding(
+          context,
+          element.startBinding,
+          elementsMap,
+          zoom,
+          dim,
+          dim,
+          element.startBinding?.mode === "orbit" ? "red" : "black",
+        );
+      }
+
+      if (element.endBinding) {
+        if (
+          !elementsMap
+            .get(element.endBinding.elementId)
+            ?.boundElements?.find((e) => e.id === element.id)
+        ) {
+          return;
+        }
+        _renderBinding(
+          context,
+          element.endBinding,
+          elementsMap,
+          zoom,
+          dim,
+          dim,
+          element.endBinding?.mode === "orbit" ? "red" : "black",
+        );
+      }
+    }
+
+    if (isBindableElement(element) && element.boundElements?.length) {
+      element.boundElements.forEach((boundElement) => {
+        if (boundElement.type !== "arrow") {
+          return;
+        }
+
+        const arrow = elementsMap.get(
+          boundElement.id,
+        ) as ExcalidrawArrowElement;
+
+        if (arrow && arrow.startBinding?.elementId === element.id) {
+          _renderBindableBinding(
+            arrow.startBinding,
+            context,
+            elementsMap,
+            zoom,
+            dim,
+            dim,
+            "green",
+          );
+        }
+        if (arrow && arrow.endBinding?.elementId === element.id) {
+          _renderBindableBinding(
+            arrow.endBinding,
+            context,
+            elementsMap,
+            zoom,
+            dim,
+            dim,
+            "green",
+          );
+        }
+      });
+    }
+  });
+};
+
 const render = (
   frame: DebugElement[],
   context: CanvasRenderingContext2D,
@@ -96,6 +321,9 @@ const render = (
           el.color,
         );
         break;
+      case isDebugPolygon(el.data):
+        renderPolygon(context, appState.zoom.value, el.data, el.color);
+        break;
       default:
         throw new Error(`Unknown element type ${JSON.stringify(el)}`);
     }
@@ -105,18 +333,14 @@ const render = (
 const _debugRenderer = (
   canvas: HTMLCanvasElement,
   appState: AppState,
+  elements: readonly OrderedExcalidrawElement[],
   scale: number,
-  refresh: () => void,
 ) => {
   const [normalizedWidth, normalizedHeight] = getNormalizedCanvasDimensions(
     canvas,
     scale,
   );
 
-  if (appState.height !== canvas.height || appState.width !== canvas.width) {
-    refresh();
-  }
-
   const context = bootstrapCanvas({
     canvas,
     scale,
@@ -133,6 +357,7 @@ const _debugRenderer = (
   );
 
   renderOrigin(context, appState.zoom.value);
+  renderBindings(context, elements, appState.zoom.value);
 
   if (
     window.visualDebug?.currentFrame &&
@@ -184,10 +409,10 @@ export const debugRenderer = throttleRAF(
   (
     canvas: HTMLCanvasElement,
     appState: AppState,
+    elements: readonly OrderedExcalidrawElement[],
     scale: number,
-    refresh: () => void,
   ) => {
-    _debugRenderer(canvas, appState, scale, refresh);
+    _debugRenderer(canvas, appState, elements, scale);
   },
   { trailing: true },
 );
@@ -314,35 +539,29 @@ export const DebugFooter = ({ onChange }: { onChange: () => void }) => {
 interface DebugCanvasProps {
   appState: AppState;
   scale: number;
-  ref?: React.Ref<HTMLCanvasElement>;
 }
 
-const DebugCanvas = ({ appState, scale, ref }: DebugCanvasProps) => {
+const DebugCanvas = React.forwardRef<HTMLCanvasElement, DebugCanvasProps>(
-  const { width, height } = appState;
+  ({ appState, scale }, ref) => {
+    const { width, height } = appState;
 
-  const canvasRef = useRef<HTMLCanvasElement>(null);
+    return (
-  useImperativeHandle<HTMLCanvasElement | null, HTMLCanvasElement | null>(
+      <canvas
-    ref,
+        style={{
-    () => canvasRef.current,
+          width,
-    [canvasRef],
+          height,
-  );
+          position: "absolute",
-
+          zIndex: 2,
-  return (
+          pointerEvents: "none",
-    <canvas
+        }}
-      style={{
+        width={width * scale}
-        width,
+        height={height * scale}
-        height,
+        ref={ref}
-        position: "absolute",
+      >
-        zIndex: 2,
+        Debug Canvas
-        pointerEvents: "none",
+      </canvas>
-      }}
+    );
-      width={width * scale}
+  },
-      height={height * scale}
+);
-      ref={canvasRef}
-    >
-      Debug Canvas
-    </canvas>
-  );
-};
 
 export default DebugCanvas;

excalidraw-app/components/ExcalidrawPlusAppLink.tsx

@@ -1,19 +0,0 @@
-import { isExcalidrawPlusSignedUser } from "../app_constants";
-
-export const ExcalidrawPlusAppLink = () => {
-  if (!isExcalidrawPlusSignedUser) {
-    return null;
-  }
-  return (
-    <a
-      href={`${
-        import.meta.env.VITE_APP_PLUS_APP
-      }?utm_source=excalidraw&utm_medium=app&utm_content=signedInUserRedirectButton#excalidraw-redirect`}
-      target="_blank"
-      rel="noopener"
-      className="plus-button"
-    >
-      Go to Excalidraw+
-    </a>
-  );
-};

excalidraw-app/components/ExcalidrawPlusPromoBanner.tsx

@@ -0,0 +1,22 @@
+export const ExcalidrawPlusPromoBanner = ({
+  isSignedIn,
+}: {
+  isSignedIn: boolean;
+}) => {
+  return (
+    <a
+      href={
+        isSignedIn
+          ? import.meta.env.VITE_APP_PLUS_APP
+          : `${
+              import.meta.env.VITE_APP_PLUS_LP
+            }/plus?utm_source=excalidraw&utm_medium=app&utm_content=guestBanner#excalidraw-redirect`
+      }
+      target="_blank"
+      rel="noopener"
+      className="plus-banner"
+    >
+      Excalidraw+
+    </a>
+  );
+};

excalidraw-app/components/GitHubCorner.tsx

@@ -1,46 +0,0 @@
-import { THEME } from "@excalidraw/common";
-import oc from "open-color";
-import React from "react";
-
-import type { Theme } from "@excalidraw/element/types";
-
-// https://github.com/tholman/github-corners
-export const GitHubCorner = React.memo(
-  ({ theme, dir }: { theme: Theme; dir: string }) => (
-    <svg
-      xmlns="http://www.w3.org/2000/svg"
-      width="40"
-      height="40"
-      viewBox="0 0 250 250"
-      className="rtl-mirror"
-      style={{
-        marginTop: "calc(var(--space-factor) * -1)",
-        [dir === "rtl" ? "marginLeft" : "marginRight"]:
-          "calc(var(--space-factor) * -1)",
-      }}
-    >
-      <a
-        href="https://github.com/excalidraw/excalidraw"
-        target="_blank"
-        rel="noopener noreferrer"
-        aria-label="GitHub repository"
-      >
-        <path
-          d="M0 0l115 115h15l12 27 108 108V0z"
-          fill={theme === THEME.LIGHT ? oc.gray[6] : oc.gray[7]}
-        />
-        <path
-          className="octo-arm"
-          d="M128 109c-15-9-9-19-9-19 3-7 2-11 2-11-1-7 3-2 3-2 4 5 2 11 2 11-3 10 5 15 9 16"
-          style={{ transformOrigin: "130px 106px" }}
-          fill={theme === THEME.LIGHT ? oc.white : "var(--default-bg-color)"}
-        />
-        <path
-          className="octo-body"
-          d="M115 115s4 2 5 0l14-14c3-2 6-3 8-3-8-11-15-24 2-41 5-5 10-7 16-7 1-2 3-7 12-11 0 0 5 3 7 16 4 2 8 5 12 9s7 8 9 12c14 3 17 7 17 7-4 8-9 11-11 11 0 6-2 11-7 16-16 16-30 10-41 2 0 3-1 7-5 11l-12 11c-1 1 1 5 1 5z"
-          fill={theme === THEME.LIGHT ? oc.white : "var(--default-bg-color)"}
-        />
-      </a>
-    </svg>
-  ),
-);

excalidraw-app/data/LocalData.ts

@@ -16,7 +16,6 @@ import {
   DEFAULT_SIDEBAR,
   debounce,
 } from "@excalidraw/common";
-import { clearElementsForLocalStorage } from "@excalidraw/element";
 import {
   createStore,
   entries,
@@ -27,6 +26,9 @@ import {
   get,
 } from "idb-keyval";
 
+import { appJotaiStore, atom } from "excalidraw-app/app-jotai";
+import { getNonDeletedElements } from "@excalidraw/element";
+
 import type { LibraryPersistedData } from "@excalidraw/excalidraw/data/library";
 import type { ImportedDataState } from "@excalidraw/excalidraw/data/types";
 import type { ExcalidrawElement, FileId } from "@excalidraw/element/types";
@@ -45,6 +47,8 @@ import { updateBrowserStateVersion } from "./tabSync";
 
 const filesStore = createStore("files-db", "files-store");
 
+export const localStorageQuotaExceededAtom = atom(false);
+
 class LocalFileManager extends FileManager {
   clearObsoleteFiles = async (opts: { currentFileIds: FileId[] }) => {
     await entries(filesStore).then((entries) => {
@@ -69,6 +73,9 @@ const saveDataStateToLocalStorage = (
   elements: readonly ExcalidrawElement[],
   appState: AppState,
 ) => {
+  const localStorageQuotaExceeded = appJotaiStore.get(
+    localStorageQuotaExceededAtom,
+  );
   try {
     const _appState = clearAppStateForLocalStorage(appState);
 
@@ -79,21 +86,33 @@ const saveDataStateToLocalStorage = (
       _appState.openSidebar = null;
     }
 
+    const persistedElements = getNonDeletedElements(elements);
+
     localStorage.setItem(
       STORAGE_KEYS.LOCAL_STORAGE_ELEMENTS,
-      JSON.stringify(clearElementsForLocalStorage(elements)),
+      JSON.stringify(persistedElements),
     );
     localStorage.setItem(
       STORAGE_KEYS.LOCAL_STORAGE_APP_STATE,
       JSON.stringify(_appState),
     );
     updateBrowserStateVersion(STORAGE_KEYS.VERSION_DATA_STATE);
+    if (localStorageQuotaExceeded) {
+      appJotaiStore.set(localStorageQuotaExceededAtom, false);
+    }
   } catch (error: any) {
     // Unable to access window.localStorage
     console.error(error);
+    if (isQuotaExceededError(error) && !localStorageQuotaExceeded) {
+      appJotaiStore.set(localStorageQuotaExceededAtom, true);
+    }
   }
 };
 
+const isQuotaExceededError = (error: any) => {
+  return error instanceof DOMException && error.name === "QuotaExceededError";
+};
+
 type SavingLockTypes = "collaboration";
 
 export class LocalData {

excalidraw-app/data/TTDStorage.ts

@@ -0,0 +1,51 @@
+import { createStore, get, set } from "idb-keyval";
+
+import type { SavedChats } from "@excalidraw/excalidraw/components/TTDDialog/types";
+
+import { STORAGE_KEYS } from "../app_constants";
+
+/**
+ * IndexedDB adapter for TTD chat storage.
+ * Implements TTDPersistenceAdapter interface.
+ */
+export class TTDIndexedDBAdapter {
+  /** IndexedDB database name */
+  private static idb_name = STORAGE_KEYS.IDB_TTD_CHATS;
+  /** Store key for chat data */
+  private static key = "ttdChats";
+
+  private static store = createStore(
+    `${TTDIndexedDBAdapter.idb_name}-db`,
+    `${TTDIndexedDBAdapter.idb_name}-store`,
+  );
+
+  /**
+   * Load saved chats from IndexedDB.
+   * @returns Promise resolving to saved chats array (empty if none found)
+   */
+  static async loadChats(): Promise<SavedChats> {
+    try {
+      const data = await get<SavedChats>(
+        TTDIndexedDBAdapter.key,
+        TTDIndexedDBAdapter.store,
+      );
+      return data || [];
+    } catch (error) {
+      console.warn("Failed to load TTD chats from IndexedDB:", error);
+      return [];
+    }
+  }
+
+  /**
+   * Save chats to IndexedDB.
+   * @param chats - The chats array to persist
+   */
+  static async saveChats(chats: SavedChats): Promise<void> {
+    try {
+      await set(TTDIndexedDBAdapter.key, chats, TTDIndexedDBAdapter.store);
+    } catch (error) {
+      console.warn("Failed to save TTD chats to IndexedDB:", error);
+      throw error;
+    }
+  }
+}

excalidraw-app/data/firebase.ts

@@ -1,5 +1,5 @@
 import { reconcileElements } from "@excalidraw/excalidraw";
-import { MIME_TYPES } from "@excalidraw/common";
+import { MIME_TYPES, toBrandedType } from "@excalidraw/common";
 import { decompressData } from "@excalidraw/excalidraw/data/encode";
 import {
   encryptData,
@@ -105,8 +105,8 @@ const decryptElements = async (
   data: FirebaseStoredScene,
   roomKey: string,
 ): Promise<readonly ExcalidrawElement[]> => {
-  const ciphertext = data.ciphertext.toUint8Array();
+  const ciphertext = data.ciphertext.toUint8Array() as Uint8Array<ArrayBuffer>;
-  const iv = data.iv.toUint8Array();
+  const iv = data.iv.toUint8Array() as Uint8Array<ArrayBuffer>;
 
   const decrypted = await decryptData(iv, ciphertext, roomKey);
   const decodedData = new TextDecoder("utf-8").decode(
@@ -243,7 +243,7 @@ export const saveToFirebase = async (
 
   FirebaseSceneVersionCache.set(socket, storedElements);
 
-  return storedElements;
+  return toBrandedType<RemoteExcalidrawElement[]>(storedElements);
 };
 
 export const loadFromFirebase = async (
@@ -259,7 +259,9 @@ export const loadFromFirebase = async (
   }
   const storedScene = docSnap.data() as FirebaseStoredScene;
   const elements = getSyncableElements(
-    restoreElements(await decryptElements(storedScene, roomKey), null),
+    restoreElements(await decryptElements(storedScene, roomKey), null, {
+      deleteInvisibleElements: true,
+    }),
   );
 
   if (socket) {

excalidraw-app/data/index.ts

@@ -8,7 +8,6 @@ import {
   IV_LENGTH_BYTES,
 } from "@excalidraw/excalidraw/data/encryption";
 import { serializeAsJSON } from "@excalidraw/excalidraw/data/json";
-import { restore } from "@excalidraw/excalidraw/data/restore";
 import { isInvisiblySmallElement } from "@excalidraw/element";
 import { isInitializedImageElement } from "@excalidraw/element";
 import { t } from "@excalidraw/excalidraw/i18n";
@@ -84,13 +83,13 @@ export type SocketUpdateDataSource = {
   SCENE_INIT: {
     type: WS_SUBTYPES.INIT;
     payload: {
-      elements: readonly ExcalidrawElement[];
+      elements: readonly OrderedExcalidrawElement[];
     };
   };
   SCENE_UPDATE: {
     type: WS_SUBTYPES.UPDATE;
     payload: {
-      elements: readonly ExcalidrawElement[];
+      elements: readonly OrderedExcalidrawElement[];
     };
   };
   MOUSE_LOCATION: {
@@ -200,7 +199,7 @@ const legacy_decodeFromBackend = async ({
   };
 };
 
-const importFromBackend = async (
+export const importFromBackend = async (
   id: string,
   decryptionKey: string,
 ): Promise<ImportedDataState> => {
@@ -242,40 +241,6 @@ const importFromBackend = async (
   }
 };
 
-export const loadScene = async (
-  id: string | null,
-  privateKey: string | null,
-  // Supply local state even if importing from backend to ensure we restore
-  // localStorage user settings which we do not persist on server.
-  // Non-optional so we don't forget to pass it even if `undefined`.
-  localDataState: ImportedDataState | undefined | null,
-) => {
-  let data;
-  if (id != null && privateKey != null) {
-    // the private key is used to decrypt the content from the server, take
-    // extra care not to leak it
-    data = restore(
-      await importFromBackend(id, privateKey),
-      localDataState?.appState,
-      localDataState?.elements,
-      { repairBindings: true, refreshDimensions: false },
-    );
-  } else {
-    data = restore(localDataState || null, null, null, {
-      repairBindings: true,
-    });
-  }
-
-  return {
-    elements: data.elements,
-    appState: data.appState,
-    // note: this will always be empty because we're not storing files
-    // in the scene database/localStorage, and instead fetch them async
-    // from a different database
-    files: data.files,
-  };
-};
-
 type ExportToBackendResult =
   | { url: null; errorMessage: string }
   | { url: string; errorMessage: null };

excalidraw-app/data/localStorage.ts

@@ -2,7 +2,6 @@ import {
   clearAppStateForLocalStorage,
   getDefaultAppState,
 } from "@excalidraw/excalidraw/appState";
-import { clearElementsForLocalStorage } from "@excalidraw/element";
 
 import type { ExcalidrawElement } from "@excalidraw/element/types";
 import type { AppState } from "@excalidraw/excalidraw/types";
@@ -50,7 +49,7 @@ export const importFromLocalStorage = () => {
   let elements: ExcalidrawElement[] = [];
   if (savedElements) {
     try {
-      elements = clearElementsForLocalStorage(JSON.parse(savedElements));
+      elements = JSON.parse(savedElements);
     } catch (error: any) {
       console.error(error);
       // Do nothing because elements array is already empty

excalidraw-app/debug.ts

@@ -10,8 +10,6 @@ const lessPrecise = (num: number, precision = 5) =>
 const getAvgFrameTime = (times: number[]) =>
   lessPrecise(times.reduce((a, b) => a + b) / times.length);
 
-const getFps = (frametime: number) => lessPrecise(1000 / frametime);
-
 export class Debug {
   public static DEBUG_LOG_TIMES = true;
 
@@ -24,34 +22,35 @@ export class Debug {
   private static LAST_DEBUG_LOG_CALL = 0;
   private static DEBUG_LOG_INTERVAL_ID: null | number = null;
 
+  private static LAST_FRAME_TIMESTAMP = 0;
+  private static FRAME_COUNT = 0;
+  private static ANIMATION_FRAME_ID: null | number = null;
+
+  private static scheduleAnimationFrame = () => {
+    if (Debug.DEBUG_LOG_INTERVAL_ID !== null) {
+      Debug.ANIMATION_FRAME_ID = requestAnimationFrame((timestamp) => {
+        if (Debug.LAST_FRAME_TIMESTAMP !== timestamp) {
+          Debug.LAST_FRAME_TIMESTAMP = timestamp;
+          Debug.FRAME_COUNT++;
+        }
+
+        if (Debug.DEBUG_LOG_INTERVAL_ID !== null) {
+          Debug.scheduleAnimationFrame();
+        }
+      });
+    }
+  };
+
   private static setupInterval = () => {
     if (Debug.DEBUG_LOG_INTERVAL_ID === null) {
       console.info("%c(starting perf recording)", "color: lime");
       Debug.DEBUG_LOG_INTERVAL_ID = window.setInterval(Debug.debugLogger, 1000);
+      Debug.scheduleAnimationFrame();
     }
     Debug.LAST_DEBUG_LOG_CALL = Date.now();
   };
 
   private static debugLogger = () => {
-    if (
-      Date.now() - Debug.LAST_DEBUG_LOG_CALL > 600 &&
-      Debug.DEBUG_LOG_INTERVAL_ID !== null
-    ) {
-      window.clearInterval(Debug.DEBUG_LOG_INTERVAL_ID);
-      Debug.DEBUG_LOG_INTERVAL_ID = null;
-      for (const [name, { avg }] of Object.entries(Debug.TIMES_AVG)) {
-        if (avg != null) {
-          console.info(
-            `%c${name} run avg: ${avg}ms (${getFps(avg)} fps)`,
-            "color: blue",
-          );
-        }
-      }
-      console.info("%c(stopping perf recording)", "color: red");
-      Debug.TIMES_AGGR = {};
-      Debug.TIMES_AVG = {};
-      return;
-    }
     if (Debug.DEBUG_LOG_TIMES) {
       for (const [name, { t, times }] of Object.entries(Debug.TIMES_AGGR)) {
         if (times.length) {
@@ -65,8 +64,18 @@ export class Debug {
       }
       for (const [name, { t, times, avg }] of Object.entries(Debug.TIMES_AVG)) {
         if (times.length) {
-          const avgFrameTime = getAvgFrameTime(times);
+          // const avgFrameTime = getAvgFrameTime(times);
-          console.info(name, `${avgFrameTime}ms (${getFps(avgFrameTime)} fps)`);
+          const totalTime = times.reduce((a, b) => a + b);
+          const avgFrameTime = lessPrecise(totalTime / Debug.FRAME_COUNT);
+          console.info(
+            name,
+            `- ${times.length} calls - ${avgFrameTime}ms/frame across ${
+              Debug.FRAME_COUNT
+            } frames (${lessPrecise(
+              (avgFrameTime / 16.67) * 100,
+              1,
+            )}% of frame budget)`,
+          );
           Debug.TIMES_AVG[name] = {
             t,
             times: [],
@@ -76,6 +85,24 @@ export class Debug {
         }
       }
     }
+    Debug.FRAME_COUNT = 0;
+
+    // Check for stop condition after logging
+    if (
+      Date.now() - Debug.LAST_DEBUG_LOG_CALL > 600 &&
+      Debug.DEBUG_LOG_INTERVAL_ID !== null
+    ) {
+      console.info("%c(stopping perf recording)", "color: red");
+      window.clearInterval(Debug.DEBUG_LOG_INTERVAL_ID);
+      window.cancelAnimationFrame(Debug.ANIMATION_FRAME_ID!);
+      Debug.ANIMATION_FRAME_ID = null;
+      Debug.FRAME_COUNT = 0;
+      Debug.LAST_FRAME_TIMESTAMP = 0;
+
+      Debug.DEBUG_LOG_INTERVAL_ID = null;
+      Debug.TIMES_AGGR = {};
+      Debug.TIMES_AVG = {};
+    }
   };
 
   public static logTime = (time?: number, name = "default") => {
@@ -109,7 +136,7 @@ export class Debug {
       return (...args: T) => {
         const t0 = performance.now();
         const ret = fn(...args);
-        Debug.logTime(performance.now() - t0, name);
+        Debug[type](performance.now() - t0, name);
         return ret;
       };
     };

excalidraw-app/index.html

@@ -2,7 +2,7 @@
 <html lang="en">
   <head>
     <meta charset="utf-8" />
-    <title>Excalidraw | Hand-drawn look & feel • Collaborative • Secure</title>
+    <title>Excalidraw Whiteboard</title>
     <meta
       name="viewport"
       content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover, shrink-to-fit=no"
@@ -14,7 +14,7 @@
     <!-- Primary Meta Tags -->
     <meta
       name="title"
-      content="Excalidraw — Collaborative whiteboarding made easy"
+      content="Free, collaborative whiteboard • Hand-drawn look & feel | Excalidraw"
     />
     <meta
       name="description"

excalidraw-app/index.scss

@@ -1,3 +1,5 @@
+@import "../packages/excalidraw/css/variables.module.scss";
+
 .excalidraw {
   --color-primary-contrast-offset: #625ee0; // to offset Chubb illusion
 
@@ -5,12 +7,6 @@
     --color-primary-contrast-offset: #726dff; // to offset Chubb illusion
   }
 
-  .top-right-ui {
-    display: flex;
-    justify-content: center;
-    align-items: flex-start;
-  }
-
   .footer-center {
     justify-content: flex-end;
     margin-top: auto;
@@ -58,7 +54,7 @@
     }
   }
 
-  .collab-offline-warning {
+  .alert {
     pointer-events: none;
     position: absolute;
     top: 6.5rem;
@@ -69,10 +65,18 @@
     text-align: center;
     line-height: 1.5;
     border-radius: var(--border-radius-md);
-    background-color: var(--color-warning);
-    color: var(--color-text-warning);
     z-index: 6;
     white-space: pre;
+
+    &--warning {
+      background-color: var(--color-warning);
+      color: var(--color-text-warning);
+    }
+
+    &--danger {
+      background-color: var(--color-danger-dark);
+      color: var(--color-danger-text);
+    }
   }
 }
 
@@ -82,22 +86,31 @@
   }
 }
 
-.plus-button {
+.plus-banner {
   display: flex;
   justify-content: center;
   cursor: pointer;
   align-items: center;
   border: 1px solid var(--color-primary);
-  padding: 0.5rem 0.75rem;
+  padding: 0.5rem 0.875rem;
   border-radius: var(--border-radius-lg);
   background-color: var(--island-bg-color);
-  color: var(--color-primary) !important;
   text-decoration: none !important;
 
-  font-size: 0.75rem;
+  font-family: var(--ui-font);
+  font-size: 0.8333rem;
   box-sizing: border-box;
   height: var(--lg-button-size);
 
+  border: none;
+  box-shadow: 0 0 0 1px var(--color-surface-lowest);
+  background-color: var(--color-surface-low);
+  color: var(--button-color, var(--color-on-surface)) !important;
+
+  &:active {
+    box-shadow: 0 0 0 1px var(--color-brand-active);
+  }
+
   &:hover {
     background-color: var(--color-primary);
     color: white !important;
@@ -109,7 +122,7 @@
 }
 
 .theme--dark {
-  .plus-button {
+  .plus-banner {
     &:hover {
       color: black !important;
     }

excalidraw-app/package.json

@@ -23,7 +23,7 @@
     ]
   },
   "engines": {
-    "node": "18.0.0 - 22.x.x"
+    "node": ">=18.0.0"
   },
   "dependencies": {
     "@excalidraw/random-username": "1.0.0",
@@ -36,6 +36,7 @@
     "react": "19.0.0",
     "react-dom": "19.0.0",
     "socket.io-client": "4.7.2",
+    "uqr": "0.1.2",
     "vite-plugin-html": "3.2.2"
   },
   "prettier": "@excalidraw/prettier-config",

excalidraw-app/sentry.ts

@@ -1,3 +1,4 @@
+import { getFeatureFlag } from "@excalidraw/common";
 import * as Sentry from "@sentry/browser";
 import callsites from "callsites";
 
@@ -33,6 +34,7 @@ Sentry.init({
     Sentry.captureConsoleIntegration({
       levels: ["error"],
     }),
+    Sentry.featureFlagsIntegration(),
   ],
   beforeSend(event) {
     if (event.request?.url) {
@@ -79,3 +81,14 @@ Sentry.init({
     return event;
   },
 });
+
+const flagsIntegration =
+  Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>(
+    "FeatureFlags",
+  );
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag(
+    "COMPLEX_BINDINGS",
+    getFeatureFlag("COMPLEX_BINDINGS"),
+  );
+}

excalidraw-app/share/QRCode.tsx

@@ -0,0 +1,56 @@
+import { useEffect, useState } from "react";
+import Spinner from "@excalidraw/excalidraw/components/Spinner";
+
+interface QRCodeProps {
+  value: string;
+}
+
+export const QRCode = ({ value }: QRCodeProps) => {
+  const [svgData, setSvgData] = useState<string | null>(null);
+  const [error, setError] = useState<boolean>(false);
+
+  useEffect(() => {
+    let mounted = true;
+
+    import("./qrcode.chunk")
+      .then(({ generateQRCodeSVG }) => {
+        if (mounted) {
+          try {
+            setSvgData(generateQRCodeSVG(value));
+          } catch {
+            setError(true);
+          }
+        }
+      })
+      .catch(() => {
+        if (mounted) {
+          setError(true);
+        }
+      });
+
+    return () => {
+      mounted = false;
+    };
+  }, [value]);
+
+  if (error) {
+    return null;
+  }
+
+  if (!svgData) {
+    return (
+      <div className="ShareDialog__active__qrcode ShareDialog__active__qrcode--loading">
+        <Spinner />
+      </div>
+    );
+  }
+
+  return (
+    <div
+      className="ShareDialog__active__qrcode"
+      role="img"
+      aria-label="QR code for collaboration link"
+      dangerouslySetInnerHTML={{ __html: svgData }}
+    />
+  );
+};

excalidraw-app/share/ShareDialog.scss

@@ -140,6 +140,31 @@
         gap: 0.75rem;
       }
 
+      &__qrcode {
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        align-self: center;
+        padding: 1rem;
+        background: #fff;
+        border-radius: 0.5rem;
+        border: 1px solid #e0e0e0;
+
+        $size: 150px;
+        width: $size;
+        height: $size;
+
+        & svg {
+          width: $size;
+          height: $size;
+        }
+
+        &--loading {
+          background: var(--island-bg-color);
+          border: 1px solid var(--dialog-border-color);
+        }
+      }
+
       &__description {
         border-top: 1px solid var(--color-gray-20);
 

excalidraw-app/share/ShareDialog.tsx

@@ -22,6 +22,7 @@ import { atom, useAtom, useAtomValue } from "../app-jotai";
 import { activeRoomLinkAtom } from "../collab/Collab";
 
 import "./ShareDialog.scss";
+import { QRCode } from "./QRCode";
 
 import type { CollabAPI } from "../collab/Collab";
 
@@ -142,6 +143,7 @@ const ActiveRoomDialog = ({
           }}
         />
       </div>
+      <QRCode value={activeRoomLink} />
       <div className="ShareDialog__active__description">
         <p>
           <span

excalidraw-app/share/qrcode.chunk.ts

@@ -0,0 +1,5 @@
+import { renderSVG } from "uqr";
+
+export const generateQRCodeSVG = (text: string): string => {
+  return renderSVG(text);
+};

excalidraw-app/tests/MobileMenu.test.tsx

@@ -17,30 +17,15 @@ describe("Test MobileMenu", () => {
 
   beforeEach(async () => {
     await render(<ExcalidrawApp />);
-    // @ts-ignore
+    h.app.refreshEditorInterface();
-    h.app.refreshViewportBreakpoints();
-    // @ts-ignore
-    h.app.refreshEditorBreakpoints();
   });
 
   afterAll(() => {
     restoreOriginalGetBoundingClientRect();
   });
 
-  it("should set device correctly", () => {
+  it("should set editor interface correctly", () => {
-    expect(h.app.device).toMatchInlineSnapshot(`
+    expect(h.app.editorInterface.formFactor).toBe("phone");
-      {
-        "editor": {
-          "canFitSidebar": false,
-          "isMobile": true,
-        },
-        "isTouchScreen": false,
-        "viewport": {
-          "isLandscape": false,
-          "isMobile": true,
-        },
-      }
-    `);
   });
 
   it("should initialize with welcome screen and hide once user interacts", async () => {

excalidraw-app/tests/__snapshots__/MobileMenu.test.tsx.snap

@@ -50,7 +50,11 @@ exports[`Test MobileMenu > should initialize with welcome screen and hide once u
   <div
     class="welcome-screen-center__heading welcome-screen-decor excalifont"
   >
-    All your data is saved locally in your browser.
+    Your drawings are saved in your browser's storage.
+    <br />
+    Browser storage can be cleared unexpectedly.
+    <br />
+    Save your work to a file regularly to avoid losing it.
   </div>
   <div
     class="welcome-screen-menu"

excalidraw-app/tests/collab.test.tsx

@@ -69,6 +69,114 @@ vi.mock("socket.io-client", () => {
  * i.e. multiplayer history tests could be a good first candidate, as we could test both history stacks simultaneously.
  */
 describe("collaboration", () => {
+  it("should preserve future element fields across collab reconciliation", async () => {
+    await render(<ExcalidrawApp />);
+
+    const frame = API.createElement({
+      type: "frame",
+      id: "A",
+      width: 100,
+      height: 100,
+      x: 0,
+      y: 0,
+      backgroundColor: "#ff0000",
+    });
+
+    const frameWithFutureFields = {
+      ...frame,
+      schemaState: {
+        tracks: {
+          ...frame.schemaState.tracks,
+          "host.myapp.frame": 1,
+        },
+      },
+      futureField: "keep-me",
+    } as typeof frame & {
+      schemaState: { tracks: Record<string, number> };
+      futureField: string;
+    };
+
+    API.updateScene({
+      elements: [frameWithFutureFields],
+      captureUpdate: CaptureUpdateAction.IMMEDIATELY,
+    });
+
+    await waitFor(() => {
+      expect((h.elements[0] as any).futureField).toBe("keep-me");
+      expect((h.elements[0] as any).schemaState).toEqual(
+        frameWithFutureFields.schemaState,
+      );
+      expect(h.elements[0].backgroundColor).toBe("#ff0000");
+    });
+
+    const remoteMovedFrame = newElementWith(h.elements[0] as any, {
+      x: 120,
+      y: 80,
+    });
+
+    const reconciled = (window.collab as any)._reconcileElements([
+      remoteMovedFrame,
+    ]);
+
+    expect(reconciled[0]).toEqual(
+      expect.objectContaining({
+        x: 120,
+        y: 80,
+        backgroundColor: "#ff0000",
+      }),
+    );
+    expect((reconciled[0] as any).futureField).toBe("keep-me");
+    expect((reconciled[0] as any).schemaState).toEqual(
+      frameWithFutureFields.schemaState,
+    );
+  });
+
+  it("should preserve future element fields on local edits before broadcast", async () => {
+    await render(<ExcalidrawApp />);
+
+    const rect = API.createElement({
+      type: "rectangle",
+      id: "A",
+      width: 100,
+      height: 100,
+      x: 0,
+      y: 0,
+    });
+
+    const rectWithFutureFields = {
+      ...rect,
+      schemaState: {
+        tracks: {
+          ...rect.schemaState.tracks,
+          "host.myapp.rect": 1,
+        },
+      },
+      futureField: { value: "keep-me" },
+    } as typeof rect & {
+      schemaState: { tracks: Record<string, number> };
+      futureField: { value: string };
+    };
+
+    API.updateScene({
+      elements: [rectWithFutureFields],
+      captureUpdate: CaptureUpdateAction.IMMEDIATELY,
+    });
+
+    const locallyEdited = newElementWith(h.elements[0] as any, { x: 200 });
+    API.updateScene({
+      elements: [locallyEdited],
+      captureUpdate: CaptureUpdateAction.NEVER,
+    });
+
+    await waitFor(() => {
+      expect((h.elements[0] as any).futureField).toEqual({ value: "keep-me" });
+      expect((h.elements[0] as any).schemaState).toEqual(
+        rectWithFutureFields.schemaState,
+      );
+      expect(h.elements[0]).toEqual(expect.objectContaining({ x: 200 }));
+    });
+  });
+
   it("should emit two ephemeral increments even though updates get batched", async () => {
     const durableIncrements: DurableIncrement[] = [];
     const ephemeralIncrements: EphemeralIncrement[] = [];
@@ -83,14 +191,18 @@ describe("collaboration", () => {
       }
     });
 
-    // eslint-disable-next-line dot-notation
+    // Ensure this test starts from a deterministic scene regardless of previous
-    expect(h.store["scheduledMicroActions"].length).toBe(0);
+    // test state restored from persistence.
-    expect(durableIncrements.length).toBe(0);
+    API.updateScene({
-    expect(ephemeralIncrements.length).toBe(0);
+      elements: [],
+      captureUpdate: CaptureUpdateAction.NEVER,
+    });
+
+    const durableBaseline = durableIncrements.length;
+    const ephemeralBaseline = ephemeralIncrements.length;
 
     const rectProps = {
       type: "rectangle",
-      id: "A",
       height: 200,
       width: 100,
       x: 0,
@@ -105,8 +217,7 @@ describe("collaboration", () => {
     });
 
     await waitFor(() => {
-      // expect(commitSpy).toHaveBeenCalledTimes(1);
+      expect(durableIncrements.length).toBe(durableBaseline + 1);
-      expect(durableIncrements.length).toBe(1);
     });
 
     // simulate two batched remote updates
@@ -130,13 +241,13 @@ describe("collaboration", () => {
       // altough the updates get batched,
       // we expect two ephemeral increments for each update,
       // and each such update should have the expected change
-      expect(ephemeralIncrements.length).toBe(2);
+      expect(ephemeralIncrements.length).toBe(ephemeralBaseline + 2);
-      expect(ephemeralIncrements[0].change.elements.A).toEqual(
+      expect(
-        expect.objectContaining({ x: 100 }),
+        ephemeralIncrements[ephemeralBaseline].change.elements[rect.id],
-      );
+      ).toEqual(expect.objectContaining({ x: 100 }));
-      expect(ephemeralIncrements[1].change.elements.A).toEqual(
+      expect(
-        expect.objectContaining({ x: 200 }),
+        ephemeralIncrements[ephemeralBaseline + 1].change.elements[rect.id],
-      );
+      ).toEqual(expect.objectContaining({ x: 200 }));
       // eslint-disable-next-line dot-notation
       expect(h.store["scheduledMicroActions"].length).toBe(0);
     });
@@ -205,6 +316,7 @@ describe("collaboration", () => {
     // with explicit undo (as addition) we expect our item to be restored from the snapshot!
     await waitFor(() => {
       expect(API.getUndoStack().length).toBe(1);
+      expect(API.getRedoStack().length).toBe(1);
       expect(API.getSnapshot()).toEqual([
         expect.objectContaining(rect1Props),
         expect.objectContaining({ ...rect2Props, isDeleted: false }),
@@ -247,79 +359,5 @@ describe("collaboration", () => {
         expect.objectContaining({ ...rect2Props, isDeleted: true }),
       ]);
     });
-
-    act(() => h.app.actionManager.executeAction(undoAction));
-
-    // simulate local update
-    API.updateScene({
-      elements: syncInvalidIndices([
-        h.elements[0],
-        newElementWith(h.elements[1], { x: 100 }),
-      ]),
-      captureUpdate: CaptureUpdateAction.IMMEDIATELY,
-    });
-
-    await waitFor(() => {
-      expect(API.getUndoStack().length).toBe(2);
-      expect(API.getRedoStack().length).toBe(0);
-      expect(API.getSnapshot()).toEqual([
-        expect.objectContaining(rect1Props),
-        expect.objectContaining({ ...rect2Props, isDeleted: false, x: 100 }),
-      ]);
-      expect(h.elements).toEqual([
-        expect.objectContaining(rect1Props),
-        expect.objectContaining({ ...rect2Props, isDeleted: false, x: 100 }),
-      ]);
-    });
-
-    act(() => h.app.actionManager.executeAction(undoAction));
-
-    // we expect to iterate the stack to the first visible change
-    await waitFor(() => {
-      expect(API.getUndoStack().length).toBe(1);
-      expect(API.getRedoStack().length).toBe(1);
-      expect(API.getSnapshot()).toEqual([
-        expect.objectContaining(rect1Props),
-        expect.objectContaining({ ...rect2Props, isDeleted: false, x: 0 }),
-      ]);
-      expect(h.elements).toEqual([
-        expect.objectContaining(rect1Props),
-        expect.objectContaining({ ...rect2Props, isDeleted: false, x: 0 }),
-      ]);
-    });
-
-    // simulate force deleting the element remotely
-    API.updateScene({
-      elements: syncInvalidIndices([rect1]),
-      captureUpdate: CaptureUpdateAction.NEVER,
-    });
-
-    // snapshot was correctly updated and marked the element as deleted
-    await waitFor(() => {
-      expect(API.getUndoStack().length).toBe(1);
-      expect(API.getRedoStack().length).toBe(1);
-      expect(API.getSnapshot()).toEqual([
-        expect.objectContaining(rect1Props),
-        expect.objectContaining({ ...rect2Props, isDeleted: true, x: 0 }),
-      ]);
-      expect(h.elements).toEqual([expect.objectContaining(rect1Props)]);
-    });
-
-    act(() => h.app.actionManager.executeAction(redoAction));
-
-    // with explicit redo (as update) we again restored the element from the snapshot!
-    await waitFor(() => {
-      expect(API.getUndoStack().length).toBe(2);
-      expect(API.getRedoStack().length).toBe(0);
-      expect(API.getSnapshot()).toEqual([
-        expect.objectContaining({ id: "A", isDeleted: false }),
-        expect.objectContaining({ id: "B", isDeleted: true, x: 100 }),
-      ]);
-      expect(h.history.isRedoStackEmpty).toBeTruthy();
-      expect(h.elements).toEqual([
-        expect.objectContaining({ id: "A", isDeleted: false }),
-        expect.objectContaining({ id: "B", isDeleted: true, x: 100 }),
-      ]);
-    });
   });
 });

excalidraw-app/vite.config.mts

@@ -102,6 +102,10 @@ export default defineConfig(({ mode }) => {
               // Taking the substring after "locales/"
               return `locales/${id.substring(index + 8)}`;
             }
+
+            if (id.includes("@excalidraw/mermaid-to-excalidraw")) {
+              return "mermaid-to-excalidraw";
+            }
           },
         },
       },
@@ -196,6 +200,7 @@ export default defineConfig(({ mode }) => {
               },
             },
           ],
+          maximumFileSizeToCacheInBytes: 2.3 * 1024 ** 2, // 2.3MB
         },
         manifest: {
           short_name: "Excalidraw",

package.json

@@ -34,7 +34,7 @@
     "prettier": "2.6.2",
     "rewire": "6.0.0",
     "rimraf": "^5.0.0",
-    "typescript": "4.9.4",
+    "typescript": "5.9.3",
     "vite": "5.0.12",
     "vite-plugin-checker": "0.7.2",
     "vite-plugin-ejs": "1.7.0",
@@ -44,7 +44,7 @@
     "vitest-canvas-mock": "0.3.3"
   },
   "engines": {
-    "node": "18.0.0 - 22.x.x"
+    "node": ">=18.0.0"
   },
   "homepage": ".",
   "prettier": "@excalidraw/prettier-config",
@@ -52,13 +52,17 @@
     "build-node": "node ./scripts/build-node.js",
     "build:app:docker": "yarn --cwd ./excalidraw-app build:app:docker",
     "build:app": "yarn --cwd ./excalidraw-app build:app",
-    "build:package": "yarn --cwd ./packages/excalidraw build:esm",
+    "build:common": "yarn --cwd ./packages/common build:esm",
+    "build:element": "yarn --cwd ./packages/element build:esm",
+    "build:excalidraw": "yarn --cwd ./packages/excalidraw build:esm",
+    "build:math": "yarn --cwd ./packages/math build:esm",
+    "build:packages": "yarn build:common && yarn build:math && yarn build:element && yarn build:excalidraw",
     "build:version": "yarn --cwd ./excalidraw-app build:version",
     "build": "yarn --cwd ./excalidraw-app build",
     "build:preview": "yarn --cwd ./excalidraw-app build:preview",
     "start": "yarn --cwd ./excalidraw-app start",
     "start:production": "yarn --cwd ./excalidraw-app start:production",
-    "start:example": "yarn build:package && yarn --cwd ./examples/with-script-in-browser start",
+    "start:example": "yarn build:packages && yarn --cwd ./examples/with-script-in-browser start",
     "test:all": "yarn test:typecheck && yarn test:code && yarn test:other && yarn test:app --watch=false",
     "test:app": "vitest",
     "test:code": "eslint --max-warnings=0 --ext .js,.ts,.tsx .",
@@ -76,9 +80,10 @@
     "locales-coverage:description": "node scripts/locales-coverage-description.js",
     "prepare": "husky install",
     "prettier": "prettier \"**/*.{css,scss,json,md,html,yml}\" --ignore-path=.eslintignore",
-    "autorelease": "node scripts/autorelease.js",
+    "release": "node scripts/release.js",
-    "prerelease:excalidraw": "node scripts/prerelease.js",
+    "release:test": "node scripts/release.js --tag=test",
-    "release:excalidraw": "node scripts/release.js",
+    "release:next": "node scripts/release.js --tag=next",
+    "release:latest": "node scripts/release.js --tag=latest",
     "rm:build": "rimraf --glob excalidraw-app/build excalidraw-app/dist excalidraw-app/dev-dist packages/*/dist packages/*/build examples/*/build examples/*/dist",
     "rm:node_modules": "rimraf --glob node_modules excalidraw-app/node_modules packages/*/node_modules",
     "clean-install": "yarn rm:node_modules && yarn install"

packages/common/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@excalidraw/common",
-  "version": "0.1.0",
+  "version": "0.18.0",
   "type": "module",
   "types": "./dist/types/common/src/index.d.ts",
   "main": "./dist/prod/index.js",
@@ -13,7 +13,10 @@
       "default": "./dist/prod/index.js"
     },
     "./*": {
-      "types": "./dist/types/common/src/*.d.ts"
+      "types": "./dist/types/common/src/*.d.ts",
+      "development": "./dist/dev/index.js",
+      "production": "./dist/prod/index.js",
+      "default": "./dist/prod/index.js"
     }
   },
   "files": [
@@ -52,5 +55,11 @@
   "scripts": {
     "gen:types": "rimraf types && tsc",
     "build:esm": "rimraf dist && node ../../scripts/buildBase.js && yarn gen:types"
+  },
+  "dependencies": {
+    "tinycolor2": "1.6.0"
+  },
+  "devDependencies": {
+    "@types/tinycolor2": "1.4.6"
   }
 }

packages/common/src/__snapshots__/colors.test.ts.snap

@@ -0,0 +1,185 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`COLOR_PALETTE > color palette doesn't regress 1`] = `
+{
+  "black": "#1e1e1e",
+  "blue": [
+    "#e7f5ff",
+    "#a5d8ff",
+    "#4dabf7",
+    "#228be6",
+    "#1971c2",
+  ],
+  "bronze": [
+    "#f8f1ee",
+    "#eaddd7",
+    "#d2bab0",
+    "#a18072",
+    "#846358",
+  ],
+  "cyan": [
+    "#e3fafc",
+    "#99e9f2",
+    "#3bc9db",
+    "#15aabf",
+    "#0c8599",
+  ],
+  "grape": [
+    "#f8f0fc",
+    "#eebefa",
+    "#da77f2",
+    "#be4bdb",
+    "#9c36b5",
+  ],
+  "gray": [
+    "#f8f9fa",
+    "#e9ecef",
+    "#ced4da",
+    "#868e96",
+    "#343a40",
+  ],
+  "green": [
+    "#ebfbee",
+    "#b2f2bb",
+    "#69db7c",
+    "#40c057",
+    "#2f9e44",
+  ],
+  "orange": [
+    "#fff4e6",
+    "#ffd8a8",
+    "#ffa94d",
+    "#fd7e14",
+    "#e8590c",
+  ],
+  "pink": [
+    "#fff0f6",
+    "#fcc2d7",
+    "#f783ac",
+    "#e64980",
+    "#c2255c",
+  ],
+  "red": [
+    "#fff5f5",
+    "#ffc9c9",
+    "#ff8787",
+    "#fa5252",
+    "#e03131",
+  ],
+  "teal": [
+    "#e6fcf5",
+    "#96f2d7",
+    "#38d9a9",
+    "#12b886",
+    "#099268",
+  ],
+  "transparent": "transparent",
+  "violet": [
+    "#f3f0ff",
+    "#d0bfff",
+    "#9775fa",
+    "#7950f2",
+    "#6741d9",
+  ],
+  "white": "#ffffff",
+  "yellow": [
+    "#fff9db",
+    "#ffec99",
+    "#ffd43b",
+    "#fab005",
+    "#f08c00",
+  ],
+}
+`;
+
+exports[`applyDarkModeFilter > COLOR_PALETTE regression tests > matches snapshot for all palette colors 1`] = `
+{
+  "black": "#d3d3d3",
+  "blue": [
+    "#121e26",
+    "#154162",
+    "#2273b4",
+    "#3791e0",
+    "#56a2e8",
+  ],
+  "bronze": [
+    "#221c1a",
+    "#362b26",
+    "#5a463d",
+    "#917569",
+    "#a98d84",
+  ],
+  "cyan": [
+    "#0a1e20",
+    "#004149",
+    "#007281",
+    "#0f8fa1",
+    "#3da5b6",
+  ],
+  "grape": [
+    "#211a25",
+    "#5b3165",
+    "#a954be",
+    "#d471ed",
+    "#e28af8",
+  ],
+  "gray": [
+    "#161718",
+    "#202325",
+    "#33383d",
+    "#6e757c",
+    "#b7bcc1",
+  ],
+  "green": [
+    "#0f1d12",
+    "#043b0c",
+    "#056715",
+    "#16842a",
+    "#39994b",
+  ],
+  "orange": [
+    "#22190d",
+    "#4c2b01",
+    "#924800",
+    "#cd6005",
+    "#f17634",
+  ],
+  "pink": [
+    "#26191e",
+    "#602e40",
+    "#b04d70",
+    "#f56e9d",
+    "#ff8dbc",
+  ],
+  "red": [
+    "#1f1717",
+    "#5a2c2c",
+    "#b44d4d",
+    "#fa6969",
+    "#ff8383",
+  ],
+  "teal": [
+    "#0a1d17",
+    "#00422b",
+    "#00744b",
+    "#039267",
+    "#32a783",
+  ],
+  "transparent": "#ededed00",
+  "violet": [
+    "#1f1c29",
+    "#4a3b72",
+    "#8a6cdf",
+    "#a885ff",
+    "#b595ff",
+  ],
+  "white": "#121212",
+  "yellow": [
+    "#1e1900",
+    "#362600",
+    "#5f3a00",
+    "#905000",
+    "#b86200",
+  ],
+}
+`;

packages/common/src/binary-heap.ts

@@ -5,17 +5,18 @@ export class BinaryHeap<T> {
 
   sinkDown(idx: number) {
     const node = this.content[idx];
+    const nodeScore = this.scoreFunction(node);
     while (idx > 0) {
       const parentN = ((idx + 1) >> 1) - 1;
       const parent = this.content[parentN];
-      if (this.scoreFunction(node) < this.scoreFunction(parent)) {
+      if (nodeScore < this.scoreFunction(parent)) {
-        this.content[parentN] = node;
         this.content[idx] = parent;
         idx = parentN; // TODO: Optimize
       } else {
         break;
       }
     }
+    this.content[idx] = node;
   }
 
   bubbleUp(idx: number) {
@@ -24,35 +25,39 @@ export class BinaryHeap<T> {
     const score = this.scoreFunction(node);
 
     while (true) {
-      const child2N = (idx + 1) << 1;
+      const child1N = ((idx + 1) << 1) - 1;
-      const child1N = child2N - 1;
+      const child2N = child1N + 1;
-      let swap = null;
+      let smallestIdx = idx;
-      let child1Score = 0;
+      let smallestScore = score;
 
+      // Check left child
       if (child1N < length) {
-        const child1 = this.content[child1N];
+        const child1Score = this.scoreFunction(this.content[child1N]);
-        child1Score = this.scoreFunction(child1);
+        if (child1Score < smallestScore) {
-        if (child1Score < score) {
+          smallestIdx = child1N;
-          swap = child1N;
+          smallestScore = child1Score;
         }
       }
 
+      // Check right child
       if (child2N < length) {
-        const child2 = this.content[child2N];
+        const child2Score = this.scoreFunction(this.content[child2N]);
-        const child2Score = this.scoreFunction(child2);
+        if (child2Score < smallestScore) {
-        if (child2Score < (swap === null ? score : child1Score)) {
+          smallestIdx = child2N;
-          swap = child2N;
         }
       }
 
-      if (swap !== null) {
+      if (smallestIdx === idx) {
-        this.content[idx] = this.content[swap];
-        this.content[swap] = node;
-        idx = swap; // TODO: Optimize
-      } else {
         break;
       }
+
+      // Move the smaller child up, continue finding position for node
+      this.content[idx] = this.content[smallestIdx];
+      idx = smallestIdx;
     }
+
+    // Place node in its final position
+    this.content[idx] = node;
   }
 
   push(node: T) {

packages/common/src/bounds.ts

@@ -0,0 +1,17 @@
+/**
+ * x and y position of top left corner, x and y position of bottom right corner
+ */
+export type Bounds = readonly [
+  minX: number,
+  minY: number,
+  maxX: number,
+  maxY: number,
+];
+
+export const isBounds = (box: unknown): box is Bounds =>
+  Array.isArray(box) &&
+  box.length === 4 &&
+  typeof box[0] === "number" &&
+  typeof box[1] === "number" &&
+  typeof box[2] === "number" &&
+  typeof box[3] === "number";

packages/common/src/colors.test.ts

@@ -0,0 +1,286 @@
+import {
+  applyDarkModeFilter,
+  COLOR_PALETTE,
+  rgbToHex,
+} from "@excalidraw/common";
+
+describe("COLOR_PALETTE", () => {
+  it("color palette doesn't regress", () => {
+    expect(COLOR_PALETTE).toMatchSnapshot();
+  });
+});
+
+describe("applyDarkModeFilter", () => {
+  describe("basic transformations", () => {
+    it("transforms black to near-white", () => {
+      const result = applyDarkModeFilter("#000000");
+      // Black inverted 93% + hue rotate should be near white/light gray
+      expect(result).toBe("#ededed");
+    });
+
+    it("transforms white to near-black", () => {
+      const result = applyDarkModeFilter("#ffffff");
+      // White inverted 93% should be near black/dark gray
+      expect(result).toBe("#121212");
+    });
+
+    it("transforms pure red", () => {
+      const result = applyDarkModeFilter("#ff0000");
+      // Invert 93% + hue rotate 180deg produces a cyan-ish tint
+      expect(result).toBe("#ff9090");
+    });
+
+    it("transforms pure green", () => {
+      const result = applyDarkModeFilter("#00ff00");
+      // Invert 93% + hue rotate 180deg
+      expect(result).toBe("#008f00");
+    });
+
+    it("transforms pure blue", () => {
+      const result = applyDarkModeFilter("#0000ff");
+      // Invert 93% + hue rotate 180deg produces a light purple
+      expect(result).toBe("#cdcdff");
+    });
+  });
+
+  describe("color formats", () => {
+    it("handles hex with hash", () => {
+      const result = applyDarkModeFilter("#ff0000");
+      // Fully opaque colors return 6-char hex
+      expect(result).toMatch(/^#[0-9a-f]{6}$/);
+    });
+
+    it("handles named colors", () => {
+      const result = applyDarkModeFilter("red");
+      // "red" = #ff0000, fully opaque
+      expect(result).toBe("#ff9090");
+    });
+
+    it("handles rgb format", () => {
+      const result = applyDarkModeFilter("rgb(255, 0, 0)");
+      expect(result).toBe("#ff9090");
+    });
+
+    it("handles rgba format and preserves alpha", () => {
+      const result = applyDarkModeFilter("rgba(255, 0, 0, 0.5)");
+      expect(result).toMatch(/^#[0-9a-f]{8}$/);
+      // Alpha 0.5 = 128 in hex = 80
+      expect(result).toBe("#ff909080");
+    });
+
+    it("handles transparent", () => {
+      const result = applyDarkModeFilter("transparent");
+      // transparent = rgba(0,0,0,0), inverted should still have 0 alpha
+      expect(result).toBe("#ededed00");
+    });
+
+    it("handles shorthand hex", () => {
+      const result = applyDarkModeFilter("#f00");
+      expect(result).toBe("#ff9090");
+    });
+  });
+
+  describe("alpha preservation", () => {
+    it("omits alpha for full opacity", () => {
+      const result = applyDarkModeFilter("#ff0000ff");
+      // Full opacity returns 6-char hex (no alpha suffix)
+      expect(result).toBe("#ff9090");
+    });
+
+    it("preserves 50% opacity", () => {
+      const result = applyDarkModeFilter("#ff000080");
+      expect(result.slice(-2)).toBe("80");
+    });
+
+    it("preserves 0% opacity", () => {
+      const result = applyDarkModeFilter("#ff000000");
+      expect(result.slice(-2)).toBe("00");
+    });
+  });
+
+  describe("COLOR_PALETTE regression tests", () => {
+    it("transforms black from palette", () => {
+      // COLOR_PALETTE.black is #1e1e1e (not pure black)
+      const result = applyDarkModeFilter(COLOR_PALETTE.black);
+      expect(result).toBe("#d3d3d3");
+    });
+
+    it("transforms white from palette", () => {
+      const result = applyDarkModeFilter(COLOR_PALETTE.white);
+      expect(result).toBe("#121212");
+    });
+
+    it("transforms transparent from palette", () => {
+      const result = applyDarkModeFilter(COLOR_PALETTE.transparent);
+      expect(result).toBe("#ededed00");
+    });
+
+    // Test each color family from the palette (all opaque, so 6-char hex)
+    describe("red shades", () => {
+      const redShades = COLOR_PALETTE.red;
+      it.each(redShades.map((color, i) => [color, i]))(
+        "transforms red shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("blue shades", () => {
+      const blueShades = COLOR_PALETTE.blue;
+      it.each(blueShades.map((color, i) => [color, i]))(
+        "transforms blue shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("green shades", () => {
+      const greenShades = COLOR_PALETTE.green;
+      it.each(greenShades.map((color, i) => [color, i]))(
+        "transforms green shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("gray shades", () => {
+      const grayShades = COLOR_PALETTE.gray;
+      it.each(grayShades.map((color, i) => [color, i]))(
+        "transforms gray shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    describe("bronze shades", () => {
+      const bronzeShades = COLOR_PALETTE.bronze;
+      it.each(bronzeShades.map((color, i) => [color, i]))(
+        "transforms bronze shade %s (index %d)",
+        (color) => {
+          const result = applyDarkModeFilter(color as string);
+          expect(result).toMatch(/^#[0-9a-f]{6}$/);
+        },
+      );
+    });
+
+    // Snapshot test for full palette to catch any regressions
+    it("matches snapshot for all palette colors", () => {
+      const transformedPalette: Record<string, string | string[]> = {};
+
+      transformedPalette.black = applyDarkModeFilter(COLOR_PALETTE.black);
+      transformedPalette.white = applyDarkModeFilter(COLOR_PALETTE.white);
+      transformedPalette.transparent = applyDarkModeFilter(
+        COLOR_PALETTE.transparent,
+      );
+
+      // Transform color arrays
+      for (const colorName of [
+        "gray",
+        "red",
+        "pink",
+        "grape",
+        "violet",
+        "blue",
+        "cyan",
+        "teal",
+        "green",
+        "yellow",
+        "orange",
+        "bronze",
+      ] as const) {
+        const shades = COLOR_PALETTE[colorName];
+        transformedPalette[colorName] = shades.map((shade) =>
+          applyDarkModeFilter(shade),
+        );
+      }
+
+      expect(transformedPalette).toMatchSnapshot();
+    });
+  });
+
+  describe("caching", () => {
+    it("returns same result for same input (cached)", () => {
+      const result1 = applyDarkModeFilter("#ff0000");
+      const result2 = applyDarkModeFilter("#ff0000");
+      expect(result1).toBe(result2);
+    });
+  });
+});
+
+describe("rgbToHex", () => {
+  describe("basic RGB conversion", () => {
+    it("converts black (0,0,0)", () => {
+      expect(rgbToHex(0, 0, 0)).toBe("#000000");
+    });
+
+    it("converts white (255,255,255)", () => {
+      expect(rgbToHex(255, 255, 255)).toBe("#ffffff");
+    });
+
+    it("converts red (255,0,0)", () => {
+      expect(rgbToHex(255, 0, 0)).toBe("#ff0000");
+    });
+
+    it("converts green (0,255,0)", () => {
+      expect(rgbToHex(0, 255, 0)).toBe("#00ff00");
+    });
+
+    it("converts blue (0,0,255)", () => {
+      expect(rgbToHex(0, 0, 255)).toBe("#0000ff");
+    });
+
+    it("converts arbitrary color", () => {
+      expect(rgbToHex(30, 30, 30)).toBe("#1e1e1e");
+    });
+  });
+
+  describe("leading zeros preservation", () => {
+    it("preserves leading zeros for low values", () => {
+      expect(rgbToHex(0, 0, 1)).toBe("#000001");
+      expect(rgbToHex(0, 1, 0)).toBe("#000100");
+      expect(rgbToHex(1, 0, 0)).toBe("#010000");
+    });
+
+    it("preserves zeros for single-digit hex values", () => {
+      expect(rgbToHex(15, 15, 15)).toBe("#0f0f0f");
+    });
+  });
+
+  describe("alpha handling", () => {
+    it("omits alpha when undefined", () => {
+      expect(rgbToHex(255, 0, 0)).toBe("#ff0000");
+      expect(rgbToHex(255, 0, 0, undefined)).toBe("#ff0000");
+    });
+
+    it("omits alpha when fully opaque (1)", () => {
+      expect(rgbToHex(255, 0, 0, 1)).toBe("#ff0000");
+    });
+
+    it("includes alpha for semi-transparent (0.5)", () => {
+      // 0.5 * 255 = 127.5 -> rounds to 128 = 0x80
+      expect(rgbToHex(255, 0, 0, 0.5)).toBe("#ff000080");
+    });
+
+    it("includes alpha for fully transparent (0)", () => {
+      expect(rgbToHex(255, 0, 0, 0)).toBe("#ff000000");
+    });
+
+    it("includes alpha for near-opaque (0.99)", () => {
+      // 0.99 * 255 = 252.45 -> rounds to 252 = 0xfc
+      expect(rgbToHex(255, 0, 0, 0.99)).toBe("#ff0000fc");
+    });
+
+    it("pads alpha with leading zero when needed", () => {
+      // 0.05 * 255 = 12.75 -> rounds to 13 = 0x0d
+      expect(rgbToHex(255, 0, 0, 0.05)).toBe("#ff00000d");
+    });
+  });
+});

packages/common/src/colors.ts

@@ -1,8 +1,117 @@
-import oc from "open-color";
+import tinycolor from "tinycolor2";
 
-import type { Merge } from "./utility-types";
+import { clamp } from "@excalidraw/math";
+import { degreesToRadians } from "@excalidraw/math";
 
-export const COLOR_OUTLINE_CONTRAST_THRESHOLD = 240;
+import type { Degrees } from "@excalidraw/math";
+
+// ---------------------------------------------------------------------------
+// Dark mode color transformation
+// ---------------------------------------------------------------------------
+
+// Browser-only cache to avoid memory leaks on server
+const DARK_MODE_COLORS_CACHE: Map<string, string> | null =
+  typeof window !== "undefined" ? new Map() : null;
+
+function cssHueRotate(
+  red: number,
+  green: number,
+  blue: number,
+  degrees: Degrees,
+): { r: number; g: number; b: number } {
+  // normalize
+  const r = red / 255;
+  const g = green / 255;
+  const b = blue / 255;
+
+  // Convert degrees to radians
+  const a = degreesToRadians(degrees);
+
+  const c = Math.cos(a);
+  const s = Math.sin(a);
+
+  // rotation matrix
+  const matrix = [
+    0.213 + c * 0.787 - s * 0.213,
+    0.715 - c * 0.715 - s * 0.715,
+    0.072 - c * 0.072 + s * 0.928,
+    0.213 - c * 0.213 + s * 0.143,
+    0.715 + c * 0.285 + s * 0.14,
+    0.072 - c * 0.072 - s * 0.283,
+    0.213 - c * 0.213 - s * 0.787,
+    0.715 - c * 0.715 + s * 0.715,
+    0.072 + c * 0.928 + s * 0.072,
+  ];
+
+  // transform
+  const newR = r * matrix[0] + g * matrix[1] + b * matrix[2];
+  const newG = r * matrix[3] + g * matrix[4] + b * matrix[5];
+  const newB = r * matrix[6] + g * matrix[7] + b * matrix[8];
+
+  // clamp the values to [0, 1] range and convert back to [0, 255]
+  return {
+    r: Math.round(Math.max(0, Math.min(1, newR)) * 255),
+    g: Math.round(Math.max(0, Math.min(1, newG)) * 255),
+    b: Math.round(Math.max(0, Math.min(1, newB)) * 255),
+  };
+}
+
+const cssInvert = (
+  r: number,
+  g: number,
+  b: number,
+  percent: number,
+): { r: number; g: number; b: number } => {
+  const p = clamp(percent, 0, 100) / 100;
+
+  // Function to invert a single color component
+  const invertComponent = (color: number): number => {
+    // Apply the invert formula
+    const inverted = color * (1 - p) + (255 - color) * p;
+    // Round to the nearest integer and clamp to [0, 255]
+    return Math.round(clamp(inverted, 0, 255));
+  };
+
+  // Calculate the inverted RGB components
+  const invertedR = invertComponent(r);
+  const invertedG = invertComponent(g);
+  const invertedB = invertComponent(b);
+
+  return { r: invertedR, g: invertedG, b: invertedB };
+};
+
+export const applyDarkModeFilter = (color: string): string => {
+  const cached = DARK_MODE_COLORS_CACHE?.get(color);
+  if (cached) {
+    return cached;
+  }
+
+  const tc = tinycolor(color);
+  const alpha = tc.getAlpha();
+
+  // order of operations matters
+  // (corresponds to "filter: invert(invertPercent) hue-rotate(hueDegrees)" in css)
+  const rgb = tc.toRgb();
+  const inverted = cssInvert(rgb.r, rgb.g, rgb.b, 93);
+  const rotated = cssHueRotate(
+    inverted.r,
+    inverted.g,
+    inverted.b,
+    180 as Degrees,
+  );
+
+  const result = rgbToHex(rotated.r, rotated.g, rotated.b, alpha);
+
+  if (DARK_MODE_COLORS_CACHE) {
+    DARK_MODE_COLORS_CACHE.set(color, result);
+  }
+
+  return result;
+};
+
+// ---------------------------------------------------------------------------
+// Color palette
+// ---------------------------------------------------------------------------
 
 // FIXME can't put to utils.ts rn because of circular dependency
 const pick = <R extends Record<string, any>, K extends readonly (keyof R)[]>(
@@ -17,15 +126,7 @@ const pick = <R extends Record<string, any>, K extends readonly (keyof R)[]>(
   }, {} as Pick<R, K[number]>) as Pick<R, K[number]>;
 };
 
-export type ColorPickerColor =
-  | Exclude<keyof oc, "indigo" | "lime">
-  | "transparent"
-  | "bronze";
 export type ColorTuple = readonly [string, string, string, string, string];
-export type ColorPalette = Merge<
-  Record<ColorPickerColor, ColorTuple>,
-  { black: "#1e1e1e"; white: "#ffffff"; transparent: "transparent" }
->;
 
 // used general type instead of specific type (ColorPalette) to support custom colors
 export type ColorPaletteCustom = { [key: string]: ColorTuple | string };
@@ -38,38 +139,30 @@ export const DEFAULT_CHART_COLOR_INDEX = 4;
 
 export const DEFAULT_ELEMENT_STROKE_COLOR_INDEX = 4;
 export const DEFAULT_ELEMENT_BACKGROUND_COLOR_INDEX = 1;
-export const ELEMENTS_PALETTE_SHADE_INDEXES = [0, 2, 4, 6, 8] as const;
-export const CANVAS_PALETTE_SHADE_INDEXES = [0, 1, 2, 3, 4] as const;
-
-export const getSpecificColorShades = (
-  color: Exclude<
-    ColorPickerColor,
-    "transparent" | "white" | "black" | "bronze"
-  >,
-  indexArr: Readonly<ColorShadesIndexes>,
-) => {
-  return indexArr.map((index) => oc[color][index]) as any as ColorTuple;
-};
 
 export const COLOR_PALETTE = {
   transparent: "transparent",
   black: "#1e1e1e",
   white: "#ffffff",
-  // open-colors
+  // open-color from https://github.com/yeun/open-color/blob/master/open-color.js
-  gray: getSpecificColorShades("gray", ELEMENTS_PALETTE_SHADE_INDEXES),
+  // corresponds to indexes [0,2,4,6,8] (weights: 50, 200, 400, 600, 800)
-  red: getSpecificColorShades("red", ELEMENTS_PALETTE_SHADE_INDEXES),
+  gray: ["#f8f9fa", "#e9ecef", "#ced4da", "#868e96", "#343a40"],
-  pink: getSpecificColorShades("pink", ELEMENTS_PALETTE_SHADE_INDEXES),
+  red: ["#fff5f5", "#ffc9c9", "#ff8787", "#fa5252", "#e03131"],
-  grape: getSpecificColorShades("grape", ELEMENTS_PALETTE_SHADE_INDEXES),
+  pink: ["#fff0f6", "#fcc2d7", "#f783ac", "#e64980", "#c2255c"],
-  violet: getSpecificColorShades("violet", ELEMENTS_PALETTE_SHADE_INDEXES),
+  grape: ["#f8f0fc", "#eebefa", "#da77f2", "#be4bdb", "#9c36b5"],
-  blue: getSpecificColorShades("blue", ELEMENTS_PALETTE_SHADE_INDEXES),
+  violet: ["#f3f0ff", "#d0bfff", "#9775fa", "#7950f2", "#6741d9"],
-  cyan: getSpecificColorShades("cyan", ELEMENTS_PALETTE_SHADE_INDEXES),
+  blue: ["#e7f5ff", "#a5d8ff", "#4dabf7", "#228be6", "#1971c2"],
-  teal: getSpecificColorShades("teal", ELEMENTS_PALETTE_SHADE_INDEXES),
+  cyan: ["#e3fafc", "#99e9f2", "#3bc9db", "#15aabf", "#0c8599"],
-  green: getSpecificColorShades("green", ELEMENTS_PALETTE_SHADE_INDEXES),
+  teal: ["#e6fcf5", "#96f2d7", "#38d9a9", "#12b886", "#099268"],
-  yellow: getSpecificColorShades("yellow", ELEMENTS_PALETTE_SHADE_INDEXES),
+  green: ["#ebfbee", "#b2f2bb", "#69db7c", "#40c057", "#2f9e44"],
-  orange: getSpecificColorShades("orange", ELEMENTS_PALETTE_SHADE_INDEXES),
+  yellow: ["#fff9db", "#ffec99", "#ffd43b", "#fab005", "#f08c00"],
-  // radix bronze shades 3,5,7,9,11
+  orange: ["#fff4e6", "#ffd8a8", "#ffa94d", "#fd7e14", "#e8590c"],
+  // radix bronze shades [3,5,7,9,11]
   bronze: ["#f8f1ee", "#eaddd7", "#d2bab0", "#a18072", "#846358"],
-} as ColorPalette;
+} as const;
+
+export type ColorPalette = typeof COLOR_PALETTE;
+export type ColorPickerColor = keyof typeof COLOR_PALETTE;
 
 const COMMON_ELEMENT_SHADES = pick(COLOR_PALETTE, [
   "cyan",
@@ -84,7 +177,6 @@ const COMMON_ELEMENT_SHADES = pick(COLOR_PALETTE, [
   "red",
 ]);
 
-// -----------------------------------------------------------------------------
 // quick picks defaults
 // -----------------------------------------------------------------------------
 
@@ -119,7 +211,6 @@ export const DEFAULT_CANVAS_BACKGROUND_PICKS = [
   "#fdf8f6",
 ] as ColorTuple;
 
-// -----------------------------------------------------------------------------
 // palette defaults
 // -----------------------------------------------------------------------------
 
@@ -145,8 +236,7 @@ export const DEFAULT_ELEMENT_BACKGROUND_COLOR_PALETTE = {
   ...COMMON_ELEMENT_SHADES,
 } as const;
 
-// -----------------------------------------------------------------------------
+// color palette helpers
-// helpers
 // -----------------------------------------------------------------------------
 
 // !!!MUST BE WITHOUT GRAY, TRANSPARENT AND BLACK!!!
@@ -167,7 +257,100 @@ export const getAllColorsSpecificShade = (index: 0 | 1 | 2 | 3 | 4) =>
     COLOR_PALETTE.red[index],
   ] as const;
 
-export const rgbToHex = (r: number, g: number, b: number) =>
+// -----------------------------------------------------------------------------
-  `#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`;
+// other helpers
+// -----------------------------------------------------------------------------
+
+export const rgbToHex = (r: number, g: number, b: number, a?: number) => {
+  // (1 << 24) adds 0x1000000 to ensure the hex string is always 7 chars,
+  // then slice(1) removes the leading "1" to get exactly 6 hex digits
+  // e.g. rgb(0,0,0) -> 0x1000000 -> "1000000" -> "000000"
+  const hex6 = `#${((1 << 24) + (r << 16) + (g << 8) + b)
+    .toString(16)
+    .slice(1)}`;
+  if (a !== undefined && a < 1) {
+    // convert alpha from 0-1 float to 0-255 int, then to 2-digit hex
+    // e.g. 0.5 -> 128 -> "80"
+    const alphaHex = Math.round(a * 255)
+      .toString(16)
+      .padStart(2, "0");
+    return `${hex6}${alphaHex}`;
+  }
+  return hex6;
+};
+
+/**
+ * @returns #RRGGBB or #RRGGBBAA based on color containing non-opaque alpha,
+ *  null if not valid color
+ */
+export const colorToHex = (color: string): string | null => {
+  const tc = tinycolor(color);
+  if (!tc.isValid()) {
+    return null;
+  }
+  const { r, g, b, a } = tc.toRgb();
+  return rgbToHex(r, g, b, a);
+};
+
+export const isTransparent = (color: string) => {
+  return tinycolor(color).getAlpha() === 0;
+};
 
 // -----------------------------------------------------------------------------
+// color contract helpers
+// -----------------------------------------------------------------------------
+
+export const COLOR_OUTLINE_CONTRAST_THRESHOLD = 240;
+
+const calculateContrast = (r: number, g: number, b: number): number => {
+  const yiq = (r * 299 + g * 587 + b * 114) / 1000;
+  return yiq;
+};
+
+// YIQ algo, inspiration from https://stackoverflow.com/a/11868398
+export const isColorDark = (color: string, threshold = 160): boolean => {
+  // no color ("") -> assume it default to black
+  if (!color) {
+    return true;
+  }
+
+  if (isTransparent(color)) {
+    return false;
+  }
+
+  const tc = tinycolor(color);
+  if (!tc.isValid()) {
+    // invalid color -> assume it defaults to black
+    return true;
+  }
+
+  const { r, g, b } = tc.toRgb();
+  return calculateContrast(r, g, b) < threshold;
+};
+
+// -----------------------------------------------------------------------------
+// normalization
+// -----------------------------------------------------------------------------
+
+/**
+ * tries to keep the input color as-is if it's valid, making minimal adjustments
+ * (trimming whitespace or adding `#` to hex colors)
+ */
+export const normalizeInputColor = (color: string): string | null => {
+  color = color.trim();
+  if (isTransparent(color)) {
+    return color;
+  }
+
+  const tc = tinycolor(color);
+  if (tc.isValid()) {
+    // testing for `#` first fixes a bug on Electron (more specfically, an
+    // Obsidian popout window), where a hex color without `#` is considered valid
+    if (["hex", "hex8"].includes(tc.getFormat()) && !color.startsWith("#")) {
+      return `#${color}`;
+    }
+    return color;
+  }
+
+  return null;
+};

packages/common/src/constants.ts

@@ -6,25 +6,6 @@ import type { AppProps, AppState } from "@excalidraw/excalidraw/types";
 
 import { COLOR_PALETTE } from "./colors";
 
-export const isDarwin = /Mac|iPod|iPhone|iPad/.test(navigator.platform);
-export const isWindows = /^Win/.test(navigator.platform);
-export const isAndroid = /\b(android)\b/i.test(navigator.userAgent);
-export const isFirefox =
-  typeof window !== "undefined" &&
-  "netscape" in window &&
-  navigator.userAgent.indexOf("rv:") > 1 &&
-  navigator.userAgent.indexOf("Gecko") > 1;
-export const isChrome = navigator.userAgent.indexOf("Chrome") !== -1;
-export const isSafari =
-  !isChrome && navigator.userAgent.indexOf("Safari") !== -1;
-export const isIOS =
-  /iPad|iPhone/.test(navigator.platform) ||
-  // iPadOS 13+
-  (navigator.userAgent.includes("Mac") && "ontouchend" in document);
-// keeping function so it can be mocked in test
-export const isBrave = () =>
-  (navigator as any).brave?.isBrave?.name === "isBrave";
-
 export const supportsResizeObserver =
   typeof window !== "undefined" && "ResizeObserver" in window;
 
@@ -36,6 +17,7 @@ export const APP_NAME = "Excalidraw";
 // (happens a lot with fast clicks with the text tool)
 export const TEXT_AUTOWRAP_THRESHOLD = 36; // px
 export const DRAGGING_THRESHOLD = 10; // px
+export const MINIMUM_ARROW_SIZE = 20; // px
 export const LINE_CONFIRM_THRESHOLD = 8; // px
 export const ELEMENT_SHIFT_TRANSLATE_AMOUNT = 5;
 export const ELEMENT_TRANSLATE_AMOUNT = 1;
@@ -117,12 +99,23 @@ export const ENV = {
 };
 
 export const CLASSES = {
+  SIDEBAR: "sidebar",
   SHAPE_ACTIONS_MENU: "App-menu__left",
   ZOOM_ACTIONS: "zoom-actions",
   SEARCH_MENU_INPUT_WRAPPER: "layer-ui__search-inputWrapper",
   CONVERT_ELEMENT_TYPE_POPUP: "ConvertElementTypePopup",
+  SHAPE_ACTIONS_THEME_SCOPE: "shape-actions-theme-scope",
+  FRAME_NAME: "frame-name",
+  DROPDOWN_MENU_EVENT_WRAPPER: "dropdown-menu-event-wrapper",
 };
 
+export const FONT_SIZES = {
+  sm: 16,
+  md: 20,
+  lg: 28,
+  xl: 36,
+} as const;
+
 export const CJK_HAND_DRAWN_FALLBACK_FONT = "Xiaolai";
 export const WINDOWS_EMOJI_FALLBACK_FONT = "Segoe UI Emoji";
 
@@ -147,19 +140,49 @@ export const FONT_FAMILY = {
   Assistant: 10,
 };
 
+// Segoe UI Emoji fails to properly fallback for some glyphs: ∞, ∫, ≠
+// so we need to have generic font fallback before it
+export const SANS_SERIF_GENERIC_FONT = "sans-serif";
+export const MONOSPACE_GENERIC_FONT = "monospace";
+
+export const FONT_FAMILY_GENERIC_FALLBACKS = {
+  [SANS_SERIF_GENERIC_FONT]: 998,
+  [MONOSPACE_GENERIC_FONT]: 999,
+};
+
 export const FONT_FAMILY_FALLBACKS = {
   [CJK_HAND_DRAWN_FALLBACK_FONT]: 100,
+  ...FONT_FAMILY_GENERIC_FALLBACKS,
   [WINDOWS_EMOJI_FALLBACK_FONT]: 1000,
 };
 
+export function getGenericFontFamilyFallback(
+  fontFamily: number,
+): keyof typeof FONT_FAMILY_GENERIC_FALLBACKS {
+  switch (fontFamily) {
+    case FONT_FAMILY.Cascadia:
+    case FONT_FAMILY["Comic Shanns"]:
+      return MONOSPACE_GENERIC_FONT;
+
+    default:
+      return SANS_SERIF_GENERIC_FONT;
+  }
+}
+
 export const getFontFamilyFallbacks = (
   fontFamily: number,
 ): Array<keyof typeof FONT_FAMILY_FALLBACKS> => {
+  const genericFallbackFont = getGenericFontFamilyFallback(fontFamily);
+
   switch (fontFamily) {
     case FONT_FAMILY.Excalifont:
-      return [CJK_HAND_DRAWN_FALLBACK_FONT, WINDOWS_EMOJI_FALLBACK_FONT];
+      return [
+        CJK_HAND_DRAWN_FALLBACK_FONT,
+        genericFallbackFont,
+        WINDOWS_EMOJI_FALLBACK_FONT,
+      ];
     default:
-      return [WINDOWS_EMOJI_FALLBACK_FONT];
+      return [genericFallbackFont, WINDOWS_EMOJI_FALLBACK_FONT];
   }
 };
 
@@ -168,6 +191,8 @@ export const THEME = {
   DARK: "dark",
 } as const;
 
+export const DARK_THEME_FILTER = "invert(93%) hue-rotate(180deg)";
+
 export const FRAME_STYLE = {
   strokeColor: "#bbb" as ExcalidrawElement["strokeColor"],
   strokeWidth: 2 as ExcalidrawElement["strokeWidth"],
@@ -221,13 +246,21 @@ export const IMAGE_MIME_TYPES = {
   jfif: "image/jfif",
 } as const;
 
-export const MIME_TYPES = {
+export const STRING_MIME_TYPES = {
   text: "text/plain",
   html: "text/html",
   json: "application/json",
   // excalidraw data
   excalidraw: "application/vnd.excalidraw+json",
+  excalidrawClipboard: "application/vnd.excalidraw.clipboard+json",
+  // LEGACY: fully-qualified library JSON data
   excalidrawlib: "application/vnd.excalidrawlib+json",
+  // list of excalidraw library item ids
+  excalidrawlibIds: "application/vnd.excalidrawlib.ids+json",
+} as const;
+
+export const MIME_TYPES = {
+  ...STRING_MIME_TYPES,
   // image-encoded excalidraw data
   "excalidraw.svg": "image/svg+xml",
   "excalidraw.png": "image/png",
@@ -276,9 +309,6 @@ export const IDLE_THRESHOLD = 60_000;
 // Report a user active each ACTIVE_THRESHOLD milliseconds
 export const ACTIVE_THRESHOLD = 3_000;
 
-// duplicates --theme-filter, should be removed soon
-export const THEME_FILTER = "invert(93%) hue-rotate(180deg)";
-
 export const URL_QUERY_KEYS = {
   addLibrary: "addLibrary",
 } as const;
@@ -302,16 +332,6 @@ export const DEFAULT_UI_OPTIONS: AppProps["UIOptions"] = {
   },
 };
 
-// breakpoints
-// -----------------------------------------------------------------------------
-// md screen
-export const MQ_MAX_WIDTH_PORTRAIT = 730;
-export const MQ_MAX_WIDTH_LANDSCAPE = 1000;
-export const MQ_MAX_HEIGHT_LANDSCAPE = 500;
-// sidebar
-export const MQ_RIGHT_SIDEBAR_MIN_WIDTH = 1229;
-// -----------------------------------------------------------------------------
-
 export const MAX_DECIMALS_FOR_SVG_EXPORT = 2;
 
 export const EXPORT_SCALES = [1, 2, 3];
@@ -477,3 +497,19 @@ export enum UserIdleState {
   AWAY = "away",
   IDLE = "idle",
 }
+
+/**
+ * distance at which we merge points instead of adding a new merge-point
+ * when converting a line to a polygon (merge currently means overlaping
+ * the start and end points)
+ */
+export const LINE_POLYGON_POINT_MERGE_DISTANCE = 20;
+
+export const DOUBLE_TAP_POSITION_THRESHOLD = 35;
+
+export const BIND_MODE_TIMEOUT = 700; // ms
+
+// glass background for mobile action buttons
+export const MOBILE_ACTION_BUTTON_BG = {
+  background: "var(--mobile-action-button-bg)",
+} as const;

packages/common/src/editorInterface.ts

@@ -0,0 +1,222 @@
+export type StylesPanelMode = "compact" | "full" | "mobile";
+
+export type EditorInterface = Readonly<{
+  formFactor: "phone" | "tablet" | "desktop";
+  desktopUIMode: "compact" | "full";
+  userAgent: Readonly<{
+    isMobileDevice: boolean;
+    platform: "ios" | "android" | "other" | "unknown";
+  }>;
+  isTouchScreen: boolean;
+  canFitSidebar: boolean;
+  isLandscape: boolean;
+}>;
+
+// storage key
+const DESKTOP_UI_MODE_STORAGE_KEY = "excalidraw.desktopUIMode";
+
+// breakpoints
+export const MQ_MAX_MOBILE = 599;
+
+export const MQ_MAX_WIDTH_LANDSCAPE = 1000;
+export const MQ_MAX_HEIGHT_LANDSCAPE = 500;
+
+// tablets
+export const MQ_MIN_TABLET = MQ_MAX_MOBILE + 1; // lower bound (excludes phones)
+export const MQ_MAX_TABLET = 1180; // ipad air
+
+// desktop/laptop (NOTE: not used for form factor detection)
+export const MQ_MIN_WIDTH_DESKTOP = 1440;
+
+// sidebar
+export const MQ_RIGHT_SIDEBAR_MIN_WIDTH = 1229;
+
+// -----------------------------------------------------------------------------
+
+// user agent detections
+export const isDarwin = /Mac|iPod|iPhone|iPad/.test(navigator.platform);
+export const isWindows = /^Win/.test(navigator.platform);
+export const isAndroid = /\b(android)\b/i.test(navigator.userAgent);
+export const isFirefox =
+  typeof window !== "undefined" &&
+  "netscape" in window &&
+  navigator.userAgent.indexOf("rv:") > 1 &&
+  navigator.userAgent.indexOf("Gecko") > 1;
+export const isChrome = navigator.userAgent.indexOf("Chrome") !== -1;
+export const isSafari =
+  !isChrome && navigator.userAgent.indexOf("Safari") !== -1;
+export const isIOS =
+  /iPad|iPhone/i.test(navigator.platform) ||
+  // iPadOS 13+
+  (navigator.userAgent.includes("Mac") && "ontouchend" in document);
+// keeping function so it can be mocked in test
+export const isBrave = () =>
+  (navigator as any).brave?.isBrave?.name === "isBrave";
+
+// export const isMobile =
+//   isIOS ||
+//   /android|webos|ipod|blackberry|iemobile|opera mini/i.test(
+//     navigator.userAgent,
+//   ) ||
+//   /android|ios|ipod|blackberry|windows phone/i.test(navigator.platform);
+
+// utilities
+export const isMobileBreakpoint = (width: number, height: number) => {
+  return (
+    width <= MQ_MAX_MOBILE ||
+    (height < MQ_MAX_HEIGHT_LANDSCAPE && width < MQ_MAX_WIDTH_LANDSCAPE)
+  );
+};
+
+export const isTabletBreakpoint = (
+  editorWidth: number,
+  editorHeight: number,
+) => {
+  const minSide = Math.min(editorWidth, editorHeight);
+  const maxSide = Math.max(editorWidth, editorHeight);
+
+  return minSide >= MQ_MIN_TABLET && maxSide <= MQ_MAX_TABLET;
+};
+
+const isMobileOrTablet = (): boolean => {
+  const ua = navigator.userAgent || "";
+  const platform = navigator.platform || "";
+  const uaData = (navigator as any).userAgentData as
+    | { mobile?: boolean; platform?: string }
+    | undefined;
+
+  // --- 1) chromium: prefer ua client hints -------------------------------
+  if (uaData) {
+    const plat = (uaData.platform || "").toLowerCase();
+    const isDesktopOS =
+      plat === "windows" ||
+      plat === "macos" ||
+      plat === "linux" ||
+      plat === "chrome os";
+    if (uaData.mobile === true) {
+      return true;
+    }
+    if (uaData.mobile === false && plat === "android") {
+      const looksTouchTablet =
+        matchMedia?.("(hover: none)").matches &&
+        matchMedia?.("(pointer: coarse)").matches;
+      return looksTouchTablet;
+    }
+    if (isDesktopOS) {
+      return false;
+    }
+  }
+
+  // --- 2) ios (includes ipad) --------------------------------------------
+  if (isIOS) {
+    return true;
+  }
+
+  // --- 3) android legacy ua fallback -------------------------------------
+  if (isAndroid) {
+    const isAndroidPhone = /Mobile/i.test(ua);
+    const isAndroidTablet = !isAndroidPhone;
+    if (isAndroidPhone || isAndroidTablet) {
+      const looksTouchTablet =
+        matchMedia?.("(hover: none)").matches &&
+        matchMedia?.("(pointer: coarse)").matches;
+      return looksTouchTablet;
+    }
+  }
+
+  // --- 4) last resort desktop exclusion ----------------------------------
+  const looksDesktopPlatform =
+    /Win|Linux|CrOS|Mac/.test(platform) ||
+    /Windows NT|X11|CrOS|Macintosh/.test(ua);
+  if (looksDesktopPlatform) {
+    return false;
+  }
+  return false;
+};
+
+export const getFormFactor = (
+  editorWidth: number,
+  editorHeight: number,
+): EditorInterface["formFactor"] => {
+  if (isMobileBreakpoint(editorWidth, editorHeight)) {
+    return "phone";
+  }
+
+  if (isTabletBreakpoint(editorWidth, editorHeight)) {
+    return "tablet";
+  }
+
+  return "desktop";
+};
+
+export const deriveStylesPanelMode = (
+  editorInterface: EditorInterface,
+): StylesPanelMode => {
+  if (editorInterface.formFactor === "phone") {
+    return "mobile";
+  }
+
+  if (editorInterface.formFactor === "tablet") {
+    return "compact";
+  }
+
+  return editorInterface.desktopUIMode;
+};
+
+export const createUserAgentDescriptor = (
+  userAgentString: string,
+): EditorInterface["userAgent"] => {
+  const normalizedUA = userAgentString ?? "";
+  let platform: EditorInterface["userAgent"]["platform"] = "unknown";
+
+  if (isIOS) {
+    platform = "ios";
+  } else if (isAndroid) {
+    platform = "android";
+  } else if (normalizedUA) {
+    platform = "other";
+  }
+
+  return {
+    isMobileDevice: isMobileOrTablet(),
+    platform,
+  } as const;
+};
+
+export const loadDesktopUIModePreference = () => {
+  if (typeof window === "undefined") {
+    return null;
+  }
+
+  try {
+    const stored = window.localStorage.getItem(DESKTOP_UI_MODE_STORAGE_KEY);
+    if (stored === "compact" || stored === "full") {
+      return stored as EditorInterface["desktopUIMode"];
+    }
+  } catch (error) {
+    // ignore storage access issues (e.g., Safari private mode)
+  }
+
+  return null;
+};
+
+const persistDesktopUIMode = (mode: EditorInterface["desktopUIMode"]) => {
+  if (typeof window === "undefined") {
+    return;
+  }
+  try {
+    window.localStorage.setItem(DESKTOP_UI_MODE_STORAGE_KEY, mode);
+  } catch (error) {
+    // ignore storage access issues (e.g., Safari private mode)
+  }
+};
+
+export const setDesktopUIMode = (mode: EditorInterface["desktopUIMode"]) => {
+  if (mode !== "compact" && mode !== "full") {
+    return;
+  }
+
+  persistDesktopUIMode(mode);
+
+  return mode;
+};

packages/common/src/index.ts

@@ -1,4 +1,5 @@
 export * from "./binary-heap";
+export * from "./bounds";
 export * from "./colors";
 export * from "./constants";
 export * from "./font-metadata";
@@ -10,3 +11,4 @@ export * from "./random";
 export * from "./url";
 export * from "./utils";
 export * from "./emitter";
+export * from "./editorInterface";

packages/common/src/keys.ts

@@ -1,4 +1,4 @@
-import { isDarwin } from "./constants";
+import { isDarwin } from "./editorInterface";
 
 import type { ValueOf } from "./utility-types";
 

packages/common/src/utils.ts

@@ -1,11 +1,6 @@
-import { average, pointFrom, type GlobalPoint } from "@excalidraw/math";
+import { average } from "@excalidraw/math";
 
-import type {
+import type { FontFamilyValues, FontString } from "@excalidraw/element/types";
-  ExcalidrawBindableElement,
-  FontFamilyValues,
-  FontString,
-  ExcalidrawElement,
-} from "@excalidraw/element/types";
 
 import type {
   ActiveTool,
@@ -15,13 +10,11 @@ import type {
   Zoom,
 } from "@excalidraw/excalidraw/types";
 
-import { COLOR_PALETTE } from "./colors";
 import {
   DEFAULT_VERSION,
   ENV,
   FONT_FAMILY,
   getFontFamilyFallbacks,
-  isDarwin,
   WINDOWS_EMOJI_FALLBACK_FONT,
 } from "./constants";
 
@@ -92,7 +85,8 @@ export const isWritableElement = (
   (target instanceof HTMLInputElement &&
     (target.type === "text" ||
       target.type === "number" ||
-      target.type === "password"));
+      target.type === "password" ||
+      target.type === "search"));
 
 export const getFontFamilyString = ({
   fontFamily,
@@ -101,7 +95,6 @@ export const getFontFamilyString = ({
 }) => {
   for (const [fontFamilyString, id] of Object.entries(FONT_FAMILY)) {
     if (id === fontFamily) {
-      // TODO: we should fallback first to generic family names first
       return `${fontFamilyString}${getFontFamilyFallbacks(id)
         .map((x) => `, ${x}`)
         .join("")}`;
@@ -121,6 +114,11 @@ export const getFontString = ({
   return `${fontSize}px ${getFontFamilyString({ fontFamily })}` as FontString;
 };
 
+/** executes callback in the frame that's after the current one */
+export const nextAnimationFrame = async (cb: () => any) => {
+  requestAnimationFrame(() => requestAnimationFrame(cb));
+};
+
 export const debounce = <T extends any[]>(
   fn: (...args: T) => void,
   timeout: number,
@@ -379,6 +377,10 @@ export const removeSelection = () => {
 
 export const distance = (x: number, y: number) => Math.abs(x - y);
 
+export const isSelectionLikeTool = (type: ToolType | "custom") => {
+  return type === "selection" || type === "lasso";
+};
+
 export const updateActiveTool = (
   appState: Pick<AppState, "activeTool">,
   data: ((
@@ -420,19 +422,6 @@ export const allowFullScreen = () =>
 
 export const exitFullScreen = () => document.exitFullscreen();
 
-export const getShortcutKey = (shortcut: string): string => {
-  shortcut = shortcut
-    .replace(/\bAlt\b/i, "Alt")
-    .replace(/\bShift\b/i, "Shift")
-    .replace(/\b(Enter|Return)\b/i, "Enter");
-  if (isDarwin) {
-    return shortcut
-      .replace(/\bCtrlOrCmd\b/gi, "Cmd")
-      .replace(/\bAlt\b/i, "Option");
-  }
-  return shortcut.replace(/\bCtrlOrCmd\b/gi, "Ctrl");
-};
-
 export const viewportCoordsToSceneCoords = (
   { clientX, clientY }: { clientX: number; clientY: number },
   {
@@ -558,19 +547,6 @@ export const mapFind = <T, K>(
   return undefined;
 };
 
-export const isTransparent = (color: string) => {
-  const isRGBTransparent = color.length === 5 && color.substr(4, 1) === "0";
-  const isRRGGBBTransparent = color.length === 9 && color.substr(7, 2) === "00";
-  return (
-    isRGBTransparent ||
-    isRRGGBBTransparent ||
-    color === COLOR_PALETTE.transparent
-  );
-};
-
-export const isBindingFallthroughEnabled = (el: ExcalidrawBindableElement) =>
-  el.fillStyle !== "solid" || isTransparent(el.backgroundColor);
-
 export type ResolvablePromise<T> = Promise<T> & {
   resolve: [T] extends [undefined]
     ? (value?: MaybePromise<Awaited<T>>) => void
@@ -712,8 +688,8 @@ export const arrayToObject = <T>(
   array: readonly T[],
   groupBy?: (value: T) => string | number,
 ) =>
-  array.reduce((acc, value) => {
+  array.reduce((acc, value, idx) => {
-    acc[groupBy ? groupBy(value) : String(value)] = value;
+    acc[groupBy ? groupBy(value) : idx] = value;
     return acc;
   }, {} as { [key: string]: T });
 
@@ -1170,39 +1146,69 @@ export const normalizeEOL = (str: string) => {
 };
 
 // -----------------------------------------------------------------------------
-type HasBrand<T> = {
+export type HasBrand<T> = {
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
-  [K in keyof T]: K extends `~brand${infer _}` ? true : never;
+  [K in keyof T]: K extends `~brand${infer _}` | "_brand" ? true : never;
 }[keyof T];
 
 type RemoveAllBrands<T> = HasBrand<T> extends true
   ? {
       // eslint-disable-next-line @typescript-eslint/no-unused-vars
-      [K in keyof T as K extends `~brand~${infer _}` ? never : K]: T[K];
+      [K in keyof T as K extends `~brand~${infer _}` | "_brand"
+        ? never
+        : K]: T[K];
     }
-  : never;
+  : T;
 
-// adapted from https://github.com/colinhacks/zod/discussions/1994#discussioncomment-6068940
+// For accepting values - uses loose matching for branded types
-// currently does not cover all types (e.g. tuples, promises...)
+// Preserves readonly modifier: mutable array requires mutable input
-type Unbrand<T> = T extends Map<infer E, infer F>
+type UnbrandForValue<T> = T extends Map<infer E, infer F>
-  ? Map<E, F>
+  ? Map<UnbrandForValue<E>, UnbrandForValue<F>>
   : T extends Set<infer E>
-  ? Set<E>
+  ? Set<UnbrandForValue<E>>
-  : T extends Array<infer E>
+  : T extends readonly any[]
-  ? Array<E>
+  ? T extends any[]
+    ? unknown[] // mutable array - require mutable input
+    : readonly unknown[] // readonly array - accept readonly input
   : RemoveAllBrands<T>;
 
+// For return types - preserves array element unbranding
+export type Unbrand<T> = T extends Map<infer E, infer F>
+  ? Map<Unbrand<E>, Unbrand<F>>
+  : T extends Set<infer E>
+  ? Set<Unbrand<E>>
+  : T extends readonly (infer E)[]
+  ? Array<Unbrand<E>>
+  : RemoveAllBrands<T>;
+
+export type CombineBrands<BrandedType, CurrentType> =
+  BrandedType extends readonly (infer BE)[]
+    ? CurrentType extends readonly (infer CE)[]
+      ? Array<CE & BE>
+      : CurrentType & BrandedType
+    : CurrentType & BrandedType;
+
+export type CombineBrandsIfNeeded<T, Required> = [T] extends [Required]
+  ? T[]
+  : HasBrand<T> extends true
+  ? CombineBrands<T, Required>[]
+  : Required[];
+
 /**
  * Makes type into a branded type, ensuring that value is assignable to
- * the base ubranded type. Optionally you can explicitly supply current value
+ * the base unbranded type. Optionally you can explicitly supply current value
  * type to combine both (useful for composite branded types. Make sure you
  * compose branded types which are not composite themselves.)
  */
-export const toBrandedType = <BrandedType, CurrentType = BrandedType>(
+export function toBrandedType<BrandedType>(
-  value: Unbrand<BrandedType>,
+  value: UnbrandForValue<BrandedType>,
-) => {
+): BrandedType;
-  return value as CurrentType & BrandedType;
+export function toBrandedType<BrandedType, CurrentType>(
-};
+  value: CurrentType,
+): CombineBrands<BrandedType, CurrentType>;
+export function toBrandedType(value: unknown) {
+  return value;
+}
 
 // -----------------------------------------------------------------------------
 
@@ -1238,20 +1244,6 @@ export const escapeDoubleQuotes = (str: string) => {
 export const castArray = <T>(value: T | T[]): T[] =>
   Array.isArray(value) ? value : [value];
 
-export const elementCenterPoint = (
-  element: ExcalidrawElement,
-  xOffset: number = 0,
-  yOffset: number = 0,
-) => {
-  const { x, y, width, height } = element;
-
-  const centerXPoint = x + width / 2 + xOffset;
-
-  const centerYPoint = y + height / 2 + yOffset;
-
-  return pointFrom<GlobalPoint>(centerXPoint, centerYPoint);
-};
-
 /** hack for Array.isArray type guard not working with readonly value[] */
 export const isReadonlyArray = (value?: any): value is readonly any[] => {
   return Array.isArray(value);
@@ -1294,3 +1286,47 @@ export const reduceToCommonValue = <T, R = T>(
 
   return commonValue;
 };
+
+type FEATURE_FLAGS = {
+  COMPLEX_BINDINGS: boolean;
+};
+
+const FEATURE_FLAGS_STORAGE_KEY = "excalidraw-feature-flags";
+const DEFAULT_FEATURE_FLAGS: FEATURE_FLAGS = {
+  COMPLEX_BINDINGS: false,
+};
+let featureFlags: FEATURE_FLAGS | null = null;
+
+export const getFeatureFlag = <F extends keyof FEATURE_FLAGS>(
+  flag: F,
+): FEATURE_FLAGS[F] => {
+  if (!featureFlags) {
+    try {
+      const serializedFlags = localStorage.getItem(FEATURE_FLAGS_STORAGE_KEY);
+      if (serializedFlags) {
+        const flags = JSON.parse(serializedFlags);
+        featureFlags = flags ?? DEFAULT_FEATURE_FLAGS;
+      }
+    } catch {}
+  }
+
+  return (featureFlags || DEFAULT_FEATURE_FLAGS)[flag];
+};
+
+export const setFeatureFlag = <F extends keyof FEATURE_FLAGS>(
+  flag: F,
+  value: FEATURE_FLAGS[F],
+) => {
+  try {
+    featureFlags = {
+      ...(featureFlags || DEFAULT_FEATURE_FLAGS),
+      [flag]: value,
+    };
+    localStorage.setItem(
+      FEATURE_FLAGS_STORAGE_KEY,
+      JSON.stringify(featureFlags),
+    );
+  } catch (e) {
+    console.error("unable to set feature flag", e);
+  }
+};

packages/element/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@excalidraw/element",
-  "version": "0.1.0",
+  "version": "0.18.0",
   "type": "module",
   "types": "./dist/types/element/src/index.d.ts",
   "main": "./dist/prod/index.js",
@@ -13,7 +13,16 @@
       "default": "./dist/prod/index.js"
     },
     "./*": {
-      "types": "./dist/types/element/src/*.d.ts"
+      "types": "./dist/types/element/src/*.d.ts",
+      "development": "./dist/dev/index.js",
+      "production": "./dist/prod/index.js",
+      "default": "./dist/prod/index.js"
+    },
+    "./visualdebug": {
+      "types": "./dist/types/element/src/visualdebug.d.ts",
+      "development": "./dist/dev/visualdebug.js",
+      "production": "./dist/prod/visualdebug.js",
+      "default": "./dist/prod/visualdebug.js"
     }
   },
   "files": [
@@ -52,5 +61,9 @@
   "scripts": {
     "gen:types": "rimraf types && tsc",
     "build:esm": "rimraf dist && node ../../scripts/buildBase.js && yarn gen:types"
+  },
+  "dependencies": {
+    "@excalidraw/common": "0.18.0",
+    "@excalidraw/math": "0.18.0"
   }
 }

packages/element/src/Scene.ts

@@ -164,9 +164,14 @@ export class Scene {
     return this.frames;
   }
 
-  constructor(elements: ElementsMapOrArray | null = null) {
+  constructor(
+    elements: ElementsMapOrArray | null = null,
+    options?: {
+      skipValidation?: true;
+    },
+  ) {
     if (elements) {
-      this.replaceAllElements(elements);
+      this.replaceAllElements(elements, options);
     }
   }
 
@@ -263,12 +268,19 @@ export class Scene {
     return didChange;
   }
 
-  replaceAllElements(nextElements: ElementsMapOrArray) {
+  replaceAllElements(
+    nextElements: ElementsMapOrArray,
+    options?: {
+      skipValidation?: true;
+    },
+  ) {
     // we do trust the insertion order on the map, though maybe we shouldn't and should prefer order defined by fractional indices
     const _nextElements = toArray(nextElements);
     const nextFrameLikes: ExcalidrawFrameLikeElement[] = [];
 
-    validateIndicesThrottled(_nextElements);
+    if (!options?.skipValidation) {
+      validateIndicesThrottled(_nextElements);
+    }
 
     this.elements = syncInvalidIndices(_nextElements);
     this.elementsMap.clear();

packages/element/src/ShapeCache.ts

@@ -1,95 +0,0 @@
-import { RoughGenerator } from "roughjs/bin/generator";
-
-import { COLOR_PALETTE } from "@excalidraw/common";
-
-import type {
-  AppState,
-  EmbedsValidationStatus,
-} from "@excalidraw/excalidraw/types";
-import type {
-  ElementShape,
-  ElementShapes,
-} from "@excalidraw/excalidraw/scene/types";
-
-import { _generateElementShape } from "./Shape";
-
-import { elementWithCanvasCache } from "./renderElement";
-
-import type { ExcalidrawElement, ExcalidrawSelectionElement } from "./types";
-
-import type { Drawable } from "roughjs/bin/core";
-
-export class ShapeCache {
-  private static rg = new RoughGenerator();
-  private static cache = new WeakMap<ExcalidrawElement, ElementShape>();
-
-  /**
-   * Retrieves shape from cache if available. Use this only if shape
-   * is optional and you have a fallback in case it's not cached.
-   */
-  public static get = <T extends ExcalidrawElement>(element: T) => {
-    return ShapeCache.cache.get(
-      element,
-    ) as T["type"] extends keyof ElementShapes
-      ? ElementShapes[T["type"]] | undefined
-      : ElementShape | undefined;
-  };
-
-  public static set = <T extends ExcalidrawElement>(
-    element: T,
-    shape: T["type"] extends keyof ElementShapes
-      ? ElementShapes[T["type"]]
-      : Drawable,
-  ) => ShapeCache.cache.set(element, shape);
-
-  public static delete = (element: ExcalidrawElement) =>
-    ShapeCache.cache.delete(element);
-
-  public static destroy = () => {
-    ShapeCache.cache = new WeakMap();
-  };
-
-  /**
-   * Generates & caches shape for element if not already cached, otherwise
-   * returns cached shape.
-   */
-  public static generateElementShape = <
-    T extends Exclude<ExcalidrawElement, ExcalidrawSelectionElement>,
-  >(
-    element: T,
-    renderConfig: {
-      isExporting: boolean;
-      canvasBackgroundColor: AppState["viewBackgroundColor"];
-      embedsValidationStatus: EmbedsValidationStatus;
-    } | null,
-  ) => {
-    // when exporting, always regenerated to guarantee the latest shape
-    const cachedShape = renderConfig?.isExporting
-      ? undefined
-      : ShapeCache.get(element);
-
-    // `null` indicates no rc shape applicable for this element type,
-    // but it's considered a valid cache value (= do not regenerate)
-    if (cachedShape !== undefined) {
-      return cachedShape;
-    }
-
-    elementWithCanvasCache.delete(element);
-
-    const shape = _generateElementShape(
-      element,
-      ShapeCache.rg,
-      renderConfig || {
-        isExporting: false,
-        canvasBackgroundColor: COLOR_PALETTE.white,
-        embedsValidationStatus: null,
-      },
-    ) as T["type"] extends keyof ElementShapes
-      ? ElementShapes[T["type"]]
-      : Drawable | null;
-
-    ShapeCache.cache.set(element, shape);
-
-    return shape;
-  };
-}

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

@@ -27,6 +27,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#66a80f",
   "strokeStyle": "solid",
@@ -64,6 +67,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#9c36b5",
   "strokeStyle": "solid",
@@ -88,8 +94,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "ellipse-1",
-    "focus": -0.007519379844961235,
+    "fixedPoint": [
-    "gap": 11.562288374879595,
+      0.04,
+      0.4633333333333333,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -98,7 +107,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -114,12 +122,18 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id49",
-    "focus": -0.0813953488372095,
+    "fixedPoint": [
-    "gap": 1,
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1864ab",
   "strokeStyle": "solid",
@@ -144,8 +158,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "ellipse-1",
-    "focus": 0.10666666666666667,
+    "fixedPoint": [
-    "gap": 3.8343264684446097,
+      -0.01,
+      0.44666666666666666,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -154,7 +171,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -170,12 +186,18 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "diamond-1",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 4.545343408287929,
+      0.9357142857142857,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#e67700",
   "strokeStyle": "solid",
@@ -213,6 +235,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing s
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -256,6 +281,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "originalText": "HEYYYYY",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#c2255c",
   "strokeStyle": "solid",
@@ -302,6 +330,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "originalText": "Whats up ?",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -334,8 +365,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "text-2",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 14,
+      -2.05,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -344,7 +378,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -360,12 +393,18 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "text-1",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 1,
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -404,6 +443,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to existing t
   "originalText": "HELLO WORLD!!",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -436,8 +478,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "id42",
-    "focus": -0,
+    "fixedPoint": [
-    "gap": 1,
+      0,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -446,7 +491,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -462,12 +506,18 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id41",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 1,
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -506,6 +556,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "originalText": "HELLO WORLD!!",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -546,6 +599,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -583,6 +639,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to shapes whe
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -612,8 +671,11 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "id46",
-    "focus": -0,
+    "fixedPoint": [
-    "gap": 1,
+      0,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -622,7 +684,6 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -638,12 +699,18 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "id45",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 1,
+      1,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -682,6 +749,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "originalText": "HELLO WORLD!!",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -728,6 +798,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "originalText": "HEYYYYY",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -774,6 +847,9 @@ exports[`Test Transform > Test arrow bindings > should bind arrows to text when
   "originalText": "WHATS UP ?",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -809,6 +885,9 @@ exports[`Test Transform > should not allow duplicate ids 1`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -839,7 +918,6 @@ exports[`Test Transform > should transform linear elements 1`] = `
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -855,6 +933,9 @@ exports[`Test Transform > should transform linear elements 1`] = `
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -887,7 +968,6 @@ exports[`Test Transform > should transform linear elements 2`] = `
   "id": Any<String>,
   "index": "a1",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -903,6 +983,9 @@ exports[`Test Transform > should transform linear elements 2`] = `
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": "dot",
   "startBinding": null,
@@ -934,7 +1017,6 @@ exports[`Test Transform > should transform linear elements 3`] = `
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -948,8 +1030,12 @@ exports[`Test Transform > should transform linear elements 3`] = `
       0,
     ],
   ],
+  "polygon": false,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -981,7 +1067,6 @@ exports[`Test Transform > should transform linear elements 4`] = `
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -995,8 +1080,12 @@ exports[`Test Transform > should transform linear elements 4`] = `
       0,
     ],
   ],
+  "polygon": false,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -1031,6 +1120,9 @@ exports[`Test Transform > should transform regular shapes 1`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1063,6 +1155,9 @@ exports[`Test Transform > should transform regular shapes 2`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1095,6 +1190,9 @@ exports[`Test Transform > should transform regular shapes 3`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1127,6 +1225,9 @@ exports[`Test Transform > should transform regular shapes 4`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1159,6 +1260,9 @@ exports[`Test Transform > should transform regular shapes 5`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "dotted",
@@ -1191,6 +1295,9 @@ exports[`Test Transform > should transform regular shapes 6`] = `
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1971c2",
   "strokeStyle": "dashed",
@@ -1229,6 +1336,9 @@ exports[`Test Transform > should transform text element 1`] = `
   "originalText": "HELLO WORLD!",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1270,6 +1380,9 @@ exports[`Test Transform > should transform text element 2`] = `
   "originalText": "STYLED HELLO WORLD!",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#5f3dc4",
   "strokeStyle": "solid",
@@ -1316,6 +1429,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1355,6 +1471,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1398,6 +1517,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1445,6 +1567,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1474,8 +1599,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "Alice",
-    "focus": -0,
+    "fixedPoint": [
-    "gap": 5.299874999999986,
+      -0.07542628418945944,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -1484,7 +1612,6 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "id": Any<String>,
   "index": "a4",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1502,12 +1629,18 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "roundness": {
     "type": 2,
   },
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "Bob",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 1,
+      1.000004978564514,
+      0.5001,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1537,8 +1670,11 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "endArrowhead": "arrow",
   "endBinding": {
     "elementId": "B",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 14,
+      0.46387050630528887,
+      0.48466257668711654,
+    ],
+    "mode": "orbit",
   },
   "fillStyle": "solid",
   "frameId": null,
@@ -1547,7 +1683,6 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "id": Any<String>,
   "index": "a5",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1561,12 +1696,18 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "roundness": {
     "type": 2,
   },
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": {
     "elementId": "Bob",
-    "focus": 0,
+    "fixedPoint": [
-    "gap": 1,
+      0.39381496335223337,
+      1,
+    ],
+    "mode": "orbit",
   },
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1607,6 +1748,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "B",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1650,6 +1794,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "A",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1693,6 +1840,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "Alice",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1736,6 +1886,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "Bob",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1777,6 +1930,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "How are you?",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1789,7 +1945,7 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "versionNonce": Any<Number>,
   "verticalAlign": "middle",
   "width": 120,
-  "x": 187.7545,
+  "x": 187.75450000000004,
   "y": 44.5,
 }
 `;
@@ -1818,6 +1974,9 @@ exports[`Test Transform > should transform the elements correctly when linear el
   "originalText": "Friendship",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -1856,7 +2015,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a0",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1872,6 +2030,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -1909,7 +2070,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a1",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1925,6 +2085,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -1962,7 +2125,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a2",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -1978,6 +2140,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -2015,7 +2180,6 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "id": Any<String>,
   "index": "a3",
   "isDeleted": false,
-  "lastCommittedPoint": null,
   "link": null,
   "locked": false,
   "opacity": 100,
@@ -2031,6 +2195,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   ],
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "startArrowhead": null,
   "startBinding": null,
@@ -2071,6 +2238,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "originalText": "LABELED ARROW",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2112,6 +2282,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "originalText": "STYLED LABELED ARROW",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#099268",
   "strokeStyle": "solid",
@@ -2153,6 +2326,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "originalText": "ANOTHER STYLED LABELLED ARROW",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1098ad",
   "strokeStyle": "solid",
@@ -2195,6 +2371,9 @@ exports[`Test Transform > should transform to labelled arrows when label provide
   "originalText": "ANOTHER STYLED LABELLED ARROW",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#099268",
   "strokeStyle": "solid",
@@ -2236,6 +2415,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2273,6 +2455,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2310,6 +2495,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2347,6 +2535,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2384,6 +2575,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#c2255c",
   "strokeStyle": "solid",
@@ -2421,6 +2615,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "opacity": 100,
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#f08c00",
   "strokeStyle": "solid",
@@ -2459,6 +2656,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "originalText": "RECTANGLE TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2500,6 +2700,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "originalText": "ELLIPSE TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2543,6 +2746,9 @@ exports[`Test Transform > should transform to text containers when label provide
 TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#1e1e1e",
   "strokeStyle": "solid",
@@ -2586,6 +2792,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "originalText": "STYLED DIAMOND TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#099268",
   "strokeStyle": "solid",
@@ -2628,6 +2837,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "originalText": "TOP LEFT ALIGNED RECTANGLE TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#c2255c",
   "strokeStyle": "solid",
@@ -2671,6 +2883,9 @@ exports[`Test Transform > should transform to text containers when label provide
   "originalText": "STYLED ELLIPSE TEXT CONTAINER",
   "roughness": 1,
   "roundness": null,
+  "schemaState": {
+    "tracks": {},
+  },
   "seed": Any<Number>,
   "strokeColor": "#c2255c",
   "strokeStyle": "solid",

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

@@ -1,11 +1,12 @@
 import { pointFrom } from "@excalidraw/math";
 import { vi } from "vitest";
 
-import type { ExcalidrawArrowElement } from "@excalidraw/element/types";
+import {
+  convertToExcalidrawElements,
+  type ExcalidrawElementSkeleton,
+} from "../transform";
 
-import { convertToExcalidrawElements } from "./transform";
+import type { ExcalidrawArrowElement } from "../types";
-
-import type { ExcalidrawElementSkeleton } from "./transform";
 
 const opts = { regenerateIds: false };
 
@@ -432,12 +433,9 @@ describe("Test Transform", () => {
         boundElements: [{ id: text.id, type: "text" }],
         startBinding: {
           elementId: rectangle.id,
-          focus: 0,
-          gap: 1,
         },
         endBinding: {
           elementId: ellipse.id,
-          focus: -0,
         },
       });
 
@@ -517,12 +515,9 @@ describe("Test Transform", () => {
         boundElements: [{ id: text1.id, type: "text" }],
         startBinding: {
           elementId: text2.id,
-          focus: 0,
-          gap: 1,
         },
         endBinding: {
           elementId: text3.id,
-          focus: -0,
         },
       });
 
@@ -780,8 +775,8 @@ describe("Test Transform", () => {
       const [arrow, rect] = excalidrawElements;
       expect((arrow as ExcalidrawArrowElement).endBinding).toStrictEqual({
         elementId: "rect-1",
-        focus: -0,
+        fixedPoint: [-2.05, 0.5001],
-        gap: 14,
+        mode: "orbit",
       });
       expect(rect.boundElements).toStrictEqual([
         {

packages/element/src/align.ts

@@ -1,6 +1,8 @@
+import type { AppState } from "@excalidraw/excalidraw/types";
+
 import { updateBoundElements } from "./binding";
 import { getCommonBoundingBox } from "./bounds";
-import { getMaximumGroups } from "./groups";
+import { getSelectedElementsByGroup } from "./groups";
 
 import type { Scene } from "./Scene";
 
@@ -16,11 +18,12 @@ export const alignElements = (
   selectedElements: ExcalidrawElement[],
   alignment: Alignment,
   scene: Scene,
+  appState: Readonly<AppState>,
 ): ExcalidrawElement[] => {
-  const elementsMap = scene.getNonDeletedElementsMap();
+  const groups: ExcalidrawElement[][] = getSelectedElementsByGroup(
-  const groups: ExcalidrawElement[][] = getMaximumGroups(
     selectedElements,
-    elementsMap,
+    scene.getNonDeletedElementsMap(),
+    appState,
   );
   const selectionBoundingBox = getCommonBoundingBox(selectedElements);
 

packages/element/src/arrows/focus.ts

@@ -0,0 +1,558 @@
+import { pointDistance, pointFrom, type GlobalPoint } from "@excalidraw/math";
+import { invariant } from "@excalidraw/common";
+
+import type { AppState, NullableGridSize } from "@excalidraw/excalidraw/types";
+
+import {
+  bindBindingElement,
+  calculateFixedPointForNonElbowArrowBinding,
+  FOCUS_POINT_SIZE,
+  getBindingGap,
+  getGlobalFixedPointForBindableElement,
+  isBindingEnabled,
+  maxBindingDistance_simple,
+  unbindBindingElement,
+  updateBoundPoint,
+} from "../binding";
+import {
+  isBindableElement,
+  isBindingElement,
+  isElbowArrow,
+} from "../typeChecks";
+import { LinearElementEditor } from "../linearElementEditor";
+import { getHoveredElementForFocusPoint, hitElementItself } from "../collision";
+import { moveArrowAboveBindable } from "../zindex";
+
+import type {
+  ElementsMap,
+  ExcalidrawArrowElement,
+  ExcalidrawBindableElement,
+  NonDeletedSceneElementsMap,
+  PointsPositionUpdates,
+} from "../types";
+
+import type { Scene } from "../Scene";
+
+export const isFocusPointVisible = (
+  focusPoint: GlobalPoint,
+  arrow: ExcalidrawArrowElement,
+  bindableElement: ExcalidrawBindableElement,
+  elementsMap: ElementsMap,
+  appState: {
+    isBindingEnabled: AppState["isBindingEnabled"];
+    zoom: AppState["zoom"];
+  },
+  startOrEnd: "start" | "end",
+  ignoreOverlap = false,
+): boolean => {
+  // No focus point management for elbow arrows, because elbow arrows
+  // always have their focus point at the arrow point itself
+  if (
+    isElbowArrow(arrow) ||
+    !isBindingEnabled(appState) ||
+    arrow.points.length !== 2
+  ) {
+    return false;
+  }
+
+  // Avoid showing the focus point indicator if the focus point is essentially
+  // on top of the arrow point it belongs to itself, if not ignoring specifically
+  if (!ignoreOverlap) {
+    const associatedPointIdx =
+      arrow.startBinding?.elementId === bindableElement.id
+        ? 0
+        : arrow.points.length - 1;
+    const associatedArrowPoint =
+      LinearElementEditor.getPointAtIndexGlobalCoordinates(
+        arrow,
+        associatedPointIdx,
+        elementsMap,
+      );
+
+    if (
+      pointDistance(focusPoint, associatedArrowPoint) <
+      (FOCUS_POINT_SIZE * 1.5) / appState.zoom.value
+    ) {
+      return false;
+    }
+  }
+
+  const arrowPoint = LinearElementEditor.getPointAtIndexGlobalCoordinates(
+    arrow,
+    startOrEnd === "end" ? arrow.points.length - 1 : 0,
+    elementsMap,
+  );
+
+  // Check if the focus point is within the element's shape bounds
+  // Endpoint dragging takes precedence
+  return (
+    pointDistance(focusPoint, arrowPoint) >=
+      (FOCUS_POINT_SIZE * 1.5) / appState.zoom.value &&
+    hitElementItself({
+      element: bindableElement,
+      elementsMap,
+      point: focusPoint,
+      threshold: getBindingGap(bindableElement, arrow),
+      overrideShouldTestInside: true,
+    })
+  );
+};
+
+// Updates the arrow endpoints in "orbit" configuration
+const focusPointUpdate = (
+  arrow: ExcalidrawArrowElement,
+  bindableElement: ExcalidrawBindableElement | null,
+  isStartBinding: boolean,
+  elementsMap: NonDeletedSceneElementsMap,
+  scene: Scene,
+  appState: AppState,
+  switchToInsideBinding: boolean,
+) => {
+  const pointUpdates = new Map();
+
+  const bindingField = isStartBinding ? "startBinding" : "endBinding";
+  const adjacentBindingField = isStartBinding ? "endBinding" : "startBinding";
+  let currentBinding = arrow[bindingField];
+  let adjacentBinding = arrow[adjacentBindingField];
+
+  // Update the dragged focus point related end
+  if (currentBinding && bindableElement) {
+    // Update the targeted bindings
+    const boundToSameElement =
+      bindableElement &&
+      adjacentBinding &&
+      currentBinding.elementId === adjacentBinding.elementId;
+    if (switchToInsideBinding || boundToSameElement) {
+      currentBinding = {
+        ...currentBinding,
+        mode: "inside",
+      };
+    } else {
+      currentBinding = {
+        ...currentBinding,
+        mode: "orbit",
+      };
+    }
+
+    const pointIndex = isStartBinding ? 0 : arrow.points.length - 1;
+    const newPoint = updateBoundPoint(
+      arrow,
+      bindingField as "startBinding" | "endBinding",
+      currentBinding,
+      bindableElement,
+      elementsMap,
+      true,
+    );
+
+    if (newPoint) {
+      pointUpdates.set(pointIndex, { point: newPoint });
+    }
+  }
+
+  // Also update the adjacent end if it has a binding
+  if (adjacentBinding && adjacentBinding.mode === "orbit") {
+    const adjacentBindableElement = elementsMap.get(
+      adjacentBinding.elementId,
+    ) as ExcalidrawBindableElement;
+
+    if (
+      adjacentBindableElement &&
+      isBindableElement(adjacentBindableElement) &&
+      isBindingEnabled(appState)
+    ) {
+      // Same shape bound on both ends
+      const boundToSameElementAfterUpdate =
+        bindableElement && adjacentBinding.elementId === bindableElement.id;
+      if (switchToInsideBinding || boundToSameElementAfterUpdate) {
+        adjacentBinding = {
+          ...adjacentBinding,
+          mode: "inside",
+        };
+      } else {
+        adjacentBinding = {
+          ...adjacentBinding,
+          mode: "orbit",
+        };
+      }
+
+      const adjacentPointIndex = isStartBinding ? arrow.points.length - 1 : 0;
+      const adjacentNewPoint = updateBoundPoint(
+        arrow,
+        adjacentBindingField,
+        adjacentBinding,
+        adjacentBindableElement,
+        elementsMap,
+      );
+
+      if (adjacentNewPoint) {
+        pointUpdates.set(adjacentPointIndex, {
+          point: adjacentNewPoint,
+        });
+      }
+    }
+  }
+
+  if (pointUpdates.size > 0) {
+    LinearElementEditor.movePoints(arrow, scene, pointUpdates, {
+      [bindingField]: currentBinding,
+      [adjacentBindingField]: adjacentBinding,
+    });
+  }
+};
+
+export const handleFocusPointDrag = (
+  linearElementEditor: LinearElementEditor,
+  elementsMap: NonDeletedSceneElementsMap,
+  pointerCoords: { x: number; y: number },
+  scene: Scene,
+  appState: AppState,
+  gridSize: NullableGridSize,
+  switchToInsideBinding: boolean,
+) => {
+  const arrow = LinearElementEditor.getElement(
+    linearElementEditor.elementId,
+    elementsMap,
+  ) as any;
+
+  // Sanity checks
+  if (
+    !arrow ||
+    !isBindingElement(arrow) ||
+    isElbowArrow(arrow) ||
+    !linearElementEditor.hoveredFocusPointBinding ||
+    !linearElementEditor.draggedFocusPointBinding
+  ) {
+    return;
+  }
+
+  const isStartBinding =
+    linearElementEditor.draggedFocusPointBinding === "start";
+  const binding = isStartBinding ? arrow.startBinding : arrow.endBinding;
+  const { x: offsetX, y: offsetY } = linearElementEditor.pointerOffset;
+  const point = pointFrom<GlobalPoint>(
+    pointerCoords.x - offsetX,
+    pointerCoords.y - offsetY,
+  );
+  const bindingField = isStartBinding ? "startBinding" : "endBinding";
+  const hit = getHoveredElementForFocusPoint(
+    point,
+    arrow,
+    scene.getNonDeletedElements(),
+    elementsMap,
+    maxBindingDistance_simple(appState.zoom),
+  );
+
+  // Hovering a bindable element
+  if (hit && isBindingEnabled(appState)) {
+    // Break existing binding if bound to another shape or if binding is disabled
+    if (arrow[bindingField] && hit.id !== binding?.elementId) {
+      unbindBindingElement(
+        arrow,
+        linearElementEditor.draggedFocusPointBinding,
+        scene,
+      );
+    }
+
+    // Handle binding mode switch
+    const newMode =
+      switchToInsideBinding && arrow[bindingField]?.mode === "orbit"
+        ? "inside"
+        : !switchToInsideBinding && arrow[bindingField]?.mode === "inside"
+        ? "orbit"
+        : null;
+
+    // If no existing binding, create it
+    if (!arrow[bindingField] || newMode) {
+      // Create a new binding if none exists
+      bindBindingElement(
+        arrow,
+        hit,
+        newMode || "orbit",
+        linearElementEditor.draggedFocusPointBinding,
+        scene,
+        point,
+      );
+    }
+
+    // Update the binding's fixed point
+    scene.mutateElement(arrow, {
+      [bindingField]: {
+        ...arrow[bindingField],
+        elementId: hit.id,
+        mode: newMode || arrow[bindingField]?.mode || "orbit",
+        ...calculateFixedPointForNonElbowArrowBinding(
+          arrow,
+          hit,
+          linearElementEditor.draggedFocusPointBinding,
+          elementsMap,
+          point,
+        ),
+      },
+    });
+  } else {
+    // Not hovering any bindable element, move the arrow endpoint
+    const pointUpdates: PointsPositionUpdates = new Map();
+    const pointIndex = isStartBinding ? 0 : arrow.points.length - 1;
+    pointUpdates.set(pointIndex, {
+      point: LinearElementEditor.createPointAt(
+        arrow,
+        elementsMap,
+        point[0],
+        point[1],
+        gridSize,
+      ),
+    });
+    LinearElementEditor.movePoints(arrow, scene, pointUpdates);
+    if (arrow[bindingField]) {
+      unbindBindingElement(arrow, isStartBinding ? "start" : "end", scene);
+    }
+  }
+
+  // Update the arrow endpoints
+  focusPointUpdate(
+    arrow,
+    hit,
+    isStartBinding,
+    elementsMap,
+    scene,
+    appState,
+    switchToInsideBinding,
+  );
+
+  if (hit && isBindingEnabled(appState)) {
+    moveArrowAboveBindable(
+      point,
+      arrow,
+      scene.getElementsIncludingDeleted(),
+      elementsMap,
+      scene,
+      hit,
+    );
+  }
+};
+
+export const handleFocusPointPointerDown = (
+  arrow: ExcalidrawArrowElement,
+  pointerDownState: { origin: { x: number; y: number } },
+  elementsMap: NonDeletedSceneElementsMap,
+  appState: AppState,
+): {
+  hitFocusPoint: "start" | "end" | null;
+  pointerOffset: { x: number; y: number };
+} => {
+  const pointerPos = pointFrom(
+    pointerDownState.origin.x,
+    pointerDownState.origin.y,
+  );
+  const hitThreshold = (FOCUS_POINT_SIZE * 1.5) / appState.zoom.value;
+
+  // Check start binding focus point
+  if (arrow.startBinding?.elementId) {
+    const bindableElement = elementsMap.get(arrow.startBinding.elementId);
+    if (
+      bindableElement &&
+      isBindableElement(bindableElement) &&
+      !bindableElement.isDeleted
+    ) {
+      const focusPoint = getGlobalFixedPointForBindableElement(
+        arrow.startBinding.fixedPoint,
+        bindableElement,
+        elementsMap,
+      );
+      if (
+        isFocusPointVisible(
+          focusPoint,
+          arrow,
+          bindableElement,
+          elementsMap,
+          appState,
+          "start",
+        ) &&
+        pointDistance(pointerPos, focusPoint) <= hitThreshold
+      ) {
+        return {
+          hitFocusPoint: "start",
+          pointerOffset: {
+            x: pointerPos[0] - focusPoint[0],
+            y: pointerPos[1] - focusPoint[1],
+          },
+        };
+      }
+    }
+  }
+
+  // Check end binding focus point (only if start not already hit)
+  if (arrow.endBinding?.elementId) {
+    const bindableElement = elementsMap.get(arrow.endBinding.elementId);
+    if (
+      bindableElement &&
+      isBindableElement(bindableElement) &&
+      !bindableElement.isDeleted
+    ) {
+      const focusPoint = getGlobalFixedPointForBindableElement(
+        arrow.endBinding.fixedPoint,
+        bindableElement,
+        elementsMap,
+      );
+      if (
+        isFocusPointVisible(
+          focusPoint,
+          arrow,
+          bindableElement,
+          elementsMap,
+          appState,
+          "end",
+        ) &&
+        pointDistance(pointerPos, focusPoint) <= hitThreshold
+      ) {
+        return {
+          hitFocusPoint: "end",
+          pointerOffset: {
+            x: pointerPos[0] - focusPoint[0],
+            y: pointerPos[1] - focusPoint[1],
+          },
+        };
+      }
+    }
+  }
+
+  return {
+    hitFocusPoint: null,
+    pointerOffset: { x: 0, y: 0 },
+  };
+};
+
+export const handleFocusPointPointerUp = (
+  linearElementEditor: LinearElementEditor,
+  scene: Scene,
+) => {
+  invariant(
+    linearElementEditor.draggedFocusPointBinding,
+    "Must have a dragged focus point at pointer release",
+  );
+
+  const arrow = LinearElementEditor.getElement<ExcalidrawArrowElement>(
+    linearElementEditor.elementId,
+    scene.getNonDeletedElementsMap(),
+  );
+  invariant(arrow, "Arrow must be in the scene");
+
+  // Clean up
+  const bindingKey =
+    linearElementEditor.draggedFocusPointBinding === "start"
+      ? "startBinding"
+      : "endBinding";
+  const otherBindingKey =
+    linearElementEditor.draggedFocusPointBinding === "start"
+      ? "endBinding"
+      : "startBinding";
+  const boundElementId = arrow[bindingKey]?.elementId;
+  const otherBoundElementId = arrow[otherBindingKey]?.elementId;
+  const oldBoundElement =
+    boundElementId &&
+    scene
+      .getNonDeletedElements()
+      .find(
+        (element) =>
+          element.id !== boundElementId &&
+          element.id !== otherBoundElementId &&
+          isBindableElement(element) &&
+          element.boundElements?.find(({ id }) => id === arrow.id),
+      );
+  if (oldBoundElement) {
+    scene.mutateElement(oldBoundElement, {
+      boundElements: oldBoundElement.boundElements?.filter(
+        ({ id }) => id !== arrow.id,
+      ),
+    });
+  }
+
+  // Record the new bound element
+  const boundElement =
+    boundElementId && scene.getNonDeletedElementsMap().get(boundElementId);
+  if (boundElement) {
+    scene.mutateElement(boundElement, {
+      boundElements: [
+        ...(boundElement.boundElements || [])?.filter(
+          ({ id }) => id !== arrow.id,
+        ),
+        {
+          id: arrow.id,
+          type: "arrow",
+        },
+      ],
+    });
+  }
+};
+
+export const handleFocusPointHover = (
+  arrow: ExcalidrawArrowElement,
+  scenePointerX: number,
+  scenePointerY: number,
+  scene: Scene,
+  appState: AppState,
+): "start" | "end" | null => {
+  const elementsMap = scene.getNonDeletedElementsMap();
+  const pointerPos = pointFrom(scenePointerX, scenePointerY);
+  const hitThreshold = (FOCUS_POINT_SIZE * 1.5) / appState.zoom.value;
+
+  // Check start binding focus point
+  if (arrow.startBinding?.elementId) {
+    const bindableElement = elementsMap.get(arrow.startBinding.elementId);
+    if (
+      bindableElement &&
+      isBindableElement(bindableElement) &&
+      !bindableElement.isDeleted
+    ) {
+      const focusPoint = getGlobalFixedPointForBindableElement(
+        arrow.startBinding.fixedPoint,
+        bindableElement,
+        elementsMap,
+      );
+      if (
+        isFocusPointVisible(
+          focusPoint,
+          arrow,
+          bindableElement,
+          elementsMap,
+          appState,
+          "start",
+        ) &&
+        pointDistance(pointerPos, focusPoint) <= hitThreshold
+      ) {
+        return "start";
+      }
+    }
+  }
+
+  // Check end binding focus point (only if start not already hovered)
+  if (arrow.endBinding?.elementId) {
+    const bindableElement = elementsMap.get(arrow.endBinding.elementId);
+    if (
+      bindableElement &&
+      isBindableElement(bindableElement) &&
+      !bindableElement.isDeleted
+    ) {
+      const focusPoint = getGlobalFixedPointForBindableElement(
+        arrow.endBinding.fixedPoint,
+        bindableElement,
+        elementsMap,
+      );
+      if (
+        isFocusPointVisible(
+          focusPoint,
+          arrow,
+          bindableElement,
+          elementsMap,
+          appState,
+          "end",
+        ) &&
+        pointDistance(pointerPos, focusPoint) <= hitThreshold
+      ) {
+        return "end";
+      }
+    }
+  }
+
+  return null;
+};

packages/element/src/arrows/helpers.ts

@@ -0,0 +1,45 @@
+import type { App } from "@excalidraw/excalidraw/types";
+
+import { LinearElementEditor } from "../linearElementEditor";
+
+import { handleFocusPointDrag } from "./focus";
+
+export const maybeHandleArrowPointlikeDrag = ({
+  app,
+  event,
+}: {
+  app: App;
+  event: KeyboardEvent | React.KeyboardEvent<Element> | PointerEvent;
+}): boolean => {
+  const appState = app.state;
+  if (appState.selectedLinearElement && app.lastPointerMoveCoords) {
+    // Update focus point status if the binding mode is changing
+    if (appState.selectedLinearElement.draggedFocusPointBinding) {
+      handleFocusPointDrag(
+        appState.selectedLinearElement,
+        app.scene.getNonDeletedElementsMap(),
+        app.lastPointerMoveCoords,
+        app.scene,
+        appState,
+        app.getEffectiveGridSize(),
+        event.altKey,
+      );
+      return true;
+    } else if (
+      appState.selectedLinearElement.hoverPointIndex !== null &&
+      app.lastPointerMoveEvent &&
+      appState.selectedLinearElement.initialState.lastClickedPoint >= 0 &&
+      appState.selectedLinearElement.isDragging
+    ) {
+      LinearElementEditor.handlePointDragging(
+        app.lastPointerMoveEvent,
+        app,
+        app.lastPointerMoveCoords.x,
+        app.lastPointerMoveCoords.y,
+        appState.selectedLinearElement,
+      );
+      return true;
+    }
+  }
+  return false;
+};

packages/element/src/bounds.ts

@@ -2,6 +2,7 @@ import rough from "roughjs/bin/rough";
 
 import {
   arrayToMap,
+  type Bounds,
   invariant,
   rescalePoints,
   sizeOf,
@@ -33,8 +34,8 @@ import type { AppState } from "@excalidraw/excalidraw/types";
 
 import type { Mutable } from "@excalidraw/common/utility-types";
 
-import { generateRoughOptions } from "./Shape";
+import { generateRoughOptions } from "./shape";
-import { ShapeCache } from "./ShapeCache";
+import { ShapeCache } from "./shape";
 import { LinearElementEditor } from "./linearElementEditor";
 import { getBoundTextElement, getContainerElement } from "./textElement";
 import {
@@ -42,10 +43,11 @@ import {
   isBoundToContainer,
   isFreeDrawElement,
   isLinearElement,
+  isLineElement,
   isTextElement,
 } from "./typeChecks";
 
-import { getElementShape } from "./shapes";
+import { getElementShape } from "./shape";
 
 import {
   deconstructDiamondElement,
@@ -77,16 +79,6 @@ export type RectangleBox = {
 
 type MaybeQuadraticSolution = [number | null, number | null] | false;
 
-/**
- * x and y position of top left corner, x and y position of bottom right corner
- */
-export type Bounds = readonly [
-  minX: number,
-  minY: number,
-  maxX: number,
-  maxY: number,
-];
-
 export type SceneBounds = readonly [
   sceneX: number,
   sceneY: number,
@@ -102,9 +94,23 @@ export class ElementBounds {
       version: ExcalidrawElement["version"];
     }
   >();
+  private static nonRotatedBoundsCache = new WeakMap<
+    ExcalidrawElement,
+    {
+      bounds: Bounds;
+      version: ExcalidrawElement["version"];
+    }
+  >();
 
-  static getBounds(element: ExcalidrawElement, elementsMap: ElementsMap) {
+  static getBounds(
-    const cachedBounds = ElementBounds.boundsCache.get(element);
+    element: ExcalidrawElement,
+    elementsMap: ElementsMap,
+    nonRotated: boolean = false,
+  ) {
+    const cachedBounds =
+      nonRotated && element.angle !== 0
+        ? ElementBounds.nonRotatedBoundsCache.get(element)
+        : ElementBounds.boundsCache.get(element);
 
     if (
       cachedBounds?.version &&
@@ -115,6 +121,23 @@ export class ElementBounds {
     ) {
       return cachedBounds.bounds;
     }
+
+    if (nonRotated && element.angle !== 0) {
+      const nonRotatedBounds = ElementBounds.calculateBounds(
+        {
+          ...element,
+          angle: 0 as Radians,
+        },
+        elementsMap,
+      );
+      ElementBounds.nonRotatedBoundsCache.set(element, {
+        version: element.version,
+        bounds: nonRotatedBounds,
+      });
+
+      return nonRotatedBounds;
+    }
+
     const bounds = ElementBounds.calculateBounds(element, elementsMap);
 
     ElementBounds.boundsCache.set(element, {
@@ -290,19 +313,42 @@ export const getElementLineSegments = (
 
   if (shape.type === "polycurve") {
     const curves = shape.data;
-    const points = curves
+    const pointsOnCurves = curves.map((curve) =>
-      .map((curve) => pointsOnBezierCurves(curve, 10))
+      pointsOnBezierCurves(curve, 10),
-      .flat();
+    );
-    let i = 0;
+
     const segments: LineSegment<GlobalPoint>[] = [];
-    while (i < points.length - 1) {
+
-      segments.push(
+    if (
-        lineSegment(
+      (isLineElement(element) && !element.polygon) ||
-          pointFrom(points[i][0], points[i][1]),
+      isArrowElement(element)
-          pointFrom(points[i + 1][0], points[i + 1][1]),
+    ) {
-        ),
+      for (const points of pointsOnCurves) {
-      );
+        let i = 0;
-      i++;
+
+        while (i < points.length - 1) {
+          segments.push(
+            lineSegment(
+              pointFrom(points[i][0], points[i][1]),
+              pointFrom(points[i + 1][0], points[i + 1][1]),
+            ),
+          );
+          i++;
+        }
+      }
+    } else {
+      const points = pointsOnCurves.flat();
+      let i = 0;
+
+      while (i < points.length - 1) {
+        segments.push(
+          lineSegment(
+            pointFrom(points[i][0], points[i][1]),
+            pointFrom(points[i + 1][0], points[i + 1][1]),
+          ),
+        );
+        i++;
+      }
     }
 
     return segments;
@@ -553,7 +599,7 @@ const solveQuadratic = (
   return [s1, s2];
 };
 
-const getCubicBezierCurveBound = (
+export const getCubicBezierCurveBound = (
   p0: GlobalPoint,
   p1: GlobalPoint,
   p2: GlobalPoint,
@@ -851,6 +897,7 @@ export const getArrowheadPoints = (
   return [x2, y2, x3, y3, x4, y4];
 };
 
+// TODO reuse shape.ts
 const generateLinearElementShape = (
   element: ExcalidrawLinearElement,
 ): Drawable => {
@@ -908,7 +955,7 @@ const getLinearElementRotatedBounds = (
   }
 
   // first element is always the curve
-  const cachedShape = ShapeCache.get(element)?.[0];
+  const cachedShape = ShapeCache.get(element, null)?.[0];
   const shape = cachedShape ?? generateLinearElementShape(element);
   const ops = getCurvePathOps(shape);
   const transformXY = ([x, y]: GlobalPoint) =>
@@ -939,8 +986,9 @@ const getLinearElementRotatedBounds = (
 export const getElementBounds = (
   element: ExcalidrawElement,
   elementsMap: ElementsMap,
+  nonRotated: boolean = false,
 ): Bounds => {
-  return ElementBounds.getBounds(element, elementsMap);
+  return ElementBounds.getBounds(element, elementsMap, nonRotated);
 };
 
 export const getCommonBounds = (
@@ -1094,7 +1142,9 @@ export interface BoundingBox {
 }
 
 export const getCommonBoundingBox = (
-  elements: ExcalidrawElement[] | readonly NonDeleted<ExcalidrawElement>[],
+  elements:
+    | readonly ExcalidrawElement[]
+    | readonly NonDeleted<ExcalidrawElement>[],
 ): BoundingBox => {
   const [minX, minY, maxX, maxY] = getCommonBounds(elements);
   return {
@@ -1133,6 +1183,71 @@ export const getCenterForBounds = (bounds: Bounds): GlobalPoint =>
     bounds[1] + (bounds[3] - bounds[1]) / 2,
   );
 
+/**
+ * Get the axis-aligned bounding box for a given element
+ */
+export const aabbForElement = (
+  element: Readonly<ExcalidrawElement>,
+  elementsMap: ElementsMap,
+  offset?: [number, number, number, number],
+) => {
+  const bbox = {
+    minX: element.x,
+    minY: element.y,
+    maxX: element.x + element.width,
+    maxY: element.y + element.height,
+    midX: element.x + element.width / 2,
+    midY: element.y + element.height / 2,
+  };
+
+  const center = elementCenterPoint(element, elementsMap);
+  const [topLeftX, topLeftY] = pointRotateRads(
+    pointFrom(bbox.minX, bbox.minY),
+    center,
+    element.angle,
+  );
+  const [topRightX, topRightY] = pointRotateRads(
+    pointFrom(bbox.maxX, bbox.minY),
+    center,
+    element.angle,
+  );
+  const [bottomRightX, bottomRightY] = pointRotateRads(
+    pointFrom(bbox.maxX, bbox.maxY),
+    center,
+    element.angle,
+  );
+  const [bottomLeftX, bottomLeftY] = pointRotateRads(
+    pointFrom(bbox.minX, bbox.maxY),
+    center,
+    element.angle,
+  );
+
+  const bounds = [
+    Math.min(topLeftX, topRightX, bottomRightX, bottomLeftX),
+    Math.min(topLeftY, topRightY, bottomRightY, bottomLeftY),
+    Math.max(topLeftX, topRightX, bottomRightX, bottomLeftX),
+    Math.max(topLeftY, topRightY, bottomRightY, bottomLeftY),
+  ] as Bounds;
+
+  if (offset) {
+    const [topOffset, rightOffset, downOffset, leftOffset] = offset;
+    return [
+      bounds[0] - leftOffset,
+      bounds[1] - topOffset,
+      bounds[2] + rightOffset,
+      bounds[3] + downOffset,
+    ] as Bounds;
+  }
+
+  return bounds;
+};
+
+export const pointInsideBounds = <P extends GlobalPoint | LocalPoint>(
+  p: P,
+  bounds: Bounds,
+): boolean =>
+  p[0] > bounds[0] && p[0] < bounds[2] && p[1] > bounds[1] && p[1] < bounds[3];
+
 export const doBoundsIntersect = (
   bounds1: Bounds | null,
   bounds2: Bounds | null,
@@ -1146,3 +1261,21 @@ export const doBoundsIntersect = (
 
   return minX1 < maxX2 && maxX1 > minX2 && minY1 < maxY2 && maxY1 > minY2;
 };
+
+export const elementCenterPoint = (
+  element: ExcalidrawElement,
+  elementsMap: ElementsMap,
+  xOffset: number = 0,
+  yOffset: number = 0,
+) => {
+  if (isLinearElement(element)) {
+    const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
+    const [x, y] = pointFrom<GlobalPoint>((x1 + x2) / 2, (y1 + y2) / 2);
+
+    return pointFrom<GlobalPoint>(x + xOffset, y + yOffset);
+  }
+
+  const [x, y] = getCenterForBounds(getElementBounds(element, elementsMap));
+
+  return pointFrom<GlobalPoint>(x + xOffset, y + yOffset);
+};

packages/element/src/collision.ts

@@ -1,57 +1,89 @@
-import { isTransparent, elementCenterPoint } from "@excalidraw/common";
+import { invariant, isTransparent, type Bounds } from "@excalidraw/common";
 import {
   curveIntersectLineSegment,
   isPointWithinBounds,
-  line,
   lineSegment,
   lineSegmentIntersectionPoints,
   pointFrom,
+  pointFromVector,
   pointRotateRads,
   pointsEqual,
+  vectorFromPoint,
+  vectorNormalize,
+  vectorScale,
 } from "@excalidraw/math";
 
 import {
   ellipse,
-  ellipseLineIntersectionPoints,
+  ellipseSegmentInterceptPoints,
 } from "@excalidraw/math/ellipse";
 
-import { isPointInShape, isPointOnShape } from "@excalidraw/utils/collision";
-import { type GeometricShape, getPolygonShape } from "@excalidraw/utils/shape";
-
 import type {
+  Curve,
   GlobalPoint,
   LineSegment,
-  LocalPoint,
-  Polygon,
   Radians,
 } from "@excalidraw/math";
 
 import type { FrameNameBounds } from "@excalidraw/excalidraw/types";
 
-import { getBoundTextShape, isPathALoop } from "./shapes";
+import { isPathALoop } from "./utils";
-import { getElementBounds } from "./bounds";
+import {
+  doBoundsIntersect,
+  elementCenterPoint,
+  getCenterForBounds,
+  getCubicBezierCurveBound,
+  getDiamondPoints,
+  getElementBounds,
+  pointInsideBounds,
+} from "./bounds";
 import {
   hasBoundTextElement,
+  isBindableElement,
+  isFrameLikeElement,
+  isFreeDrawElement,
   isIframeLikeElement,
   isImageElement,
+  isLinearElement,
   isTextElement,
 } from "./typeChecks";
 import {
   deconstructDiamondElement,
+  deconstructLinearOrFreeDrawElement,
   deconstructRectanguloidElement,
 } from "./utils";
 
+import { getBoundTextElement } from "./textElement";
+
+import { LinearElementEditor } from "./linearElementEditor";
+
+import { distanceToElement } from "./distance";
+
+import { getBindingGap } from "./binding";
+
 import type {
   ElementsMap,
+  ExcalidrawArrowElement,
+  ExcalidrawBindableElement,
   ExcalidrawDiamondElement,
   ExcalidrawElement,
   ExcalidrawEllipseElement,
-  ExcalidrawRectangleElement,
+  ExcalidrawFreeDrawElement,
+  ExcalidrawLinearElement,
   ExcalidrawRectanguloidElement,
+  NonDeleted,
+  NonDeletedExcalidrawElement,
+  NonDeletedSceneElementsMap,
+  Ordered,
 } from "./types";
 
 export const shouldTestInside = (element: ExcalidrawElement) => {
-  if (element.type === "arrow") {
+  if (
+    element.type === "arrow" ||
+    // frame elements should ignore inside hit test even if background is not
+    // transparent, so we can select children easily
+    isFrameLikeElement(element)
+  ) {
     return false;
   }
 
@@ -72,45 +104,101 @@ export const shouldTestInside = (element: ExcalidrawElement) => {
   return isDraggableFromInside || isImageElement(element);
 };
 
-export type HitTestArgs<Point extends GlobalPoint | LocalPoint> = {
+export type HitTestArgs = {
-  x: number;
+  point: GlobalPoint;
-  y: number;
   element: ExcalidrawElement;
-  shape: GeometricShape<Point>;
+  threshold: number;
-  threshold?: number;
+  elementsMap: ElementsMap;
   frameNameBound?: FrameNameBounds | null;
+  overrideShouldTestInside?: boolean;
 };
 
-export const hitElementItself = <Point extends GlobalPoint | LocalPoint>({
+let cachedPoint: GlobalPoint | null = null;
-  x,
+let cachedElement: WeakRef<ExcalidrawElement> | null = null;
-  y,
+let cachedThreshold: number = Infinity;
-  element,
+let cachedHit: boolean = false;
-  shape,
+let cachedOverrideShouldTestInside = false;
-  threshold = 10,
-  frameNameBound = null,
-}: HitTestArgs<Point>) => {
-  let hit = shouldTestInside(element)
-    ? // Since `inShape` tests STRICTLY againt the insides of a shape
-      // we would need `onShape` as well to include the "borders"
-      isPointInShape(pointFrom(x, y), shape) ||
-      isPointOnShape(pointFrom(x, y), shape, threshold)
-    : isPointOnShape(pointFrom(x, y), shape, threshold);
 
-  // hit test against a frame's name
+export const hitElementItself = ({
-  if (!hit && frameNameBound) {
+  point,
-    hit = isPointInShape(pointFrom(x, y), {
+  element,
-      type: "polygon",
+  threshold,
-      data: getPolygonShape(frameNameBound as ExcalidrawRectangleElement)
+  elementsMap,
-        .data as Polygon<Point>,
+  frameNameBound = null,
-    });
+  overrideShouldTestInside = false,
+}: HitTestArgs) => {
+  // Return cached result if the same point and element version is tested again
+  if (
+    cachedPoint &&
+    pointsEqual(point, cachedPoint) &&
+    cachedThreshold <= threshold &&
+    overrideShouldTestInside === cachedOverrideShouldTestInside
+  ) {
+    const derefElement = cachedElement?.deref();
+    if (
+      derefElement &&
+      derefElement.id === element.id &&
+      derefElement.version === element.version &&
+      derefElement.versionNonce === element.versionNonce
+    ) {
+      return cachedHit;
+    }
   }
 
-  return hit;
+  // Hit test against a frame's name
+  const hitFrameName = frameNameBound
+    ? isPointWithinBounds(
+        pointFrom(frameNameBound.x - threshold, frameNameBound.y - threshold),
+        point,
+        pointFrom(
+          frameNameBound.x + frameNameBound.width + threshold,
+          frameNameBound.y + frameNameBound.height + threshold,
+        ),
+      )
+    : false;
+
+  // Hit test against the extended, rotated bounding box of the element first
+  const bounds = getElementBounds(element, elementsMap, true);
+  const hitBounds = isPointWithinBounds(
+    pointFrom(bounds[0] - threshold, bounds[1] - threshold),
+    pointRotateRads(
+      point,
+      getCenterForBounds(bounds),
+      -element.angle as Radians,
+    ),
+    pointFrom(bounds[2] + threshold, bounds[3] + threshold),
+  );
+
+  // PERF: Bail out early if the point is not even in the
+  // rotated bounding box or not hitting the frame name (saves 99%)
+  if (!hitBounds && !hitFrameName) {
+    return false;
+  }
+
+  // Do the precise (and relatively costly) hit test
+  const hitElement = (
+    overrideShouldTestInside ? true : shouldTestInside(element)
+  )
+    ? // Since `inShape` tests STRICTLY againt the insides of a shape
+      // we would need `onShape` as well to include the "borders"
+      isPointInElement(point, element, elementsMap) ||
+      isPointOnElementOutline(point, element, elementsMap, threshold)
+    : isPointOnElementOutline(point, element, elementsMap, threshold);
+
+  const result = hitElement || hitFrameName;
+
+  // Cache end result
+  cachedPoint = point;
+  cachedElement = new WeakRef(element);
+  cachedThreshold = threshold;
+  cachedOverrideShouldTestInside = overrideShouldTestInside;
+  cachedHit = result;
+
+  return result;
 };
 
 export const hitElementBoundingBox = (
-  x: number,
+  point: GlobalPoint,
-  y: number,
   element: ExcalidrawElement,
   elementsMap: ElementsMap,
   tolerance = 0,
@@ -120,37 +208,202 @@ export const hitElementBoundingBox = (
   y1 -= tolerance;
   x2 += tolerance;
   y2 += tolerance;
-  return isPointWithinBounds(
+  return isPointWithinBounds(pointFrom(x1, y1), point, pointFrom(x2, y2));
-    pointFrom(x1, y1),
-    pointFrom(x, y),
-    pointFrom(x2, y2),
-  );
 };
 
-export const hitElementBoundingBoxOnly = <
+export const hitElementBoundingBoxOnly = (
-  Point extends GlobalPoint | LocalPoint,
+  hitArgs: HitTestArgs,
->(
-  hitArgs: HitTestArgs<Point>,
   elementsMap: ElementsMap,
-) => {
+) =>
-  return (
+  !hitElementItself(hitArgs) &&
-    !hitElementItself(hitArgs) &&
+  // bound text is considered part of the element (even if it's outside the bounding box)
-    // bound text is considered part of the element (even if it's outside the bounding box)
+  !hitElementBoundText(hitArgs.point, hitArgs.element, elementsMap) &&
-    !hitElementBoundText(
+  hitElementBoundingBox(hitArgs.point, hitArgs.element, elementsMap);
-      hitArgs.x,
+
-      hitArgs.y,
+export const hitElementBoundText = (
-      getBoundTextShape(hitArgs.element, elementsMap),
+  point: GlobalPoint,
-    ) &&
+  element: ExcalidrawElement,
-    hitElementBoundingBox(hitArgs.x, hitArgs.y, hitArgs.element, elementsMap)
+  elementsMap: ElementsMap,
-  );
+): boolean => {
+  const boundTextElementCandidate = getBoundTextElement(element, elementsMap);
+
+  if (!boundTextElementCandidate) {
+    return false;
+  }
+  const boundTextElement = isLinearElement(element)
+    ? {
+        ...boundTextElementCandidate,
+        // arrow's bound text accurate position is not stored in the element's property
+        // but rather calculated and returned from the following static method
+        ...LinearElementEditor.getBoundTextElementPosition(
+          element,
+          boundTextElementCandidate,
+          elementsMap,
+        ),
+      }
+    : boundTextElementCandidate;
+
+  return isPointInElement(point, boundTextElement, elementsMap);
 };
 
-export const hitElementBoundText = <Point extends GlobalPoint | LocalPoint>(
+const bindingBorderTest = (
-  x: number,
+  element: NonDeleted<ExcalidrawBindableElement>,
-  y: number,
+  [x, y]: Readonly<GlobalPoint>,
-  textShape: GeometricShape<Point> | null,
+  elementsMap: NonDeletedSceneElementsMap,
+  tolerance: number = 0,
 ): boolean => {
-  return !!textShape && isPointInShape(pointFrom(x, y), textShape);
+  const p = pointFrom<GlobalPoint>(x, y);
+  const shouldTestInside =
+    // disable fullshape snapping for frame elements so we
+    // can bind to frame children
+    !isFrameLikeElement(element);
+
+  // PERF: Run a cheap test to see if the binding element
+  // is even close to the element
+  const t = Math.max(1, tolerance);
+  const bounds = [x - t, y - t, x + t, y + t] as Bounds;
+  const elementBounds = getElementBounds(element, elementsMap);
+  if (!doBoundsIntersect(bounds, elementBounds)) {
+    return false;
+  }
+
+  // If the element is inside a frame, we should clip the element
+  if (element.frameId) {
+    const enclosingFrame = elementsMap.get(element.frameId);
+    if (enclosingFrame && isFrameLikeElement(enclosingFrame)) {
+      const enclosingFrameBounds = getElementBounds(
+        enclosingFrame,
+        elementsMap,
+      );
+      if (!pointInsideBounds(p, enclosingFrameBounds)) {
+        return false;
+      }
+    }
+  }
+
+  // Do the intersection test against the element since it's close enough
+  const intersections = intersectElementWithLineSegment(
+    element,
+    elementsMap,
+    lineSegment(elementCenterPoint(element, elementsMap), p),
+  );
+  const distance = distanceToElement(element, elementsMap, p);
+
+  return shouldTestInside
+    ? intersections.length === 0 || distance <= tolerance
+    : intersections.length > 0 && distance <= t;
+};
+
+export const getAllHoveredElementAtPoint = (
+  point: Readonly<GlobalPoint>,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  tolerance?: number,
+): NonDeleted<ExcalidrawBindableElement>[] => {
+  const candidateElements: NonDeleted<ExcalidrawBindableElement>[] = [];
+  // We need to to hit testing from front (end of the array) to back (beginning of the array)
+  // because array is ordered from lower z-index to highest and we want element z-index
+  // with higher z-index
+  for (let index = elements.length - 1; index >= 0; --index) {
+    const element = elements[index];
+
+    invariant(
+      !element.isDeleted,
+      "Elements in the function parameter for getAllElementsAtPositionForBinding() should not contain deleted elements",
+    );
+
+    if (
+      isBindableElement(element, false) &&
+      bindingBorderTest(element, point, elementsMap, tolerance)
+    ) {
+      candidateElements.push(element);
+
+      if (!isTransparent(element.backgroundColor)) {
+        break;
+      }
+    }
+  }
+
+  return candidateElements;
+};
+
+export const getHoveredElementForBinding = (
+  point: Readonly<GlobalPoint>,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  tolerance?: number,
+): NonDeleted<ExcalidrawBindableElement> | null => {
+  const candidateElements = getAllHoveredElementAtPoint(
+    point,
+    elements,
+    elementsMap,
+    tolerance,
+  );
+
+  if (!candidateElements || candidateElements.length === 0) {
+    return null;
+  }
+
+  if (candidateElements.length === 1) {
+    return candidateElements[0];
+  }
+
+  // Prefer smaller shapes
+  return candidateElements
+    .sort(
+      (a, b) => b.width ** 2 + b.height ** 2 - (a.width ** 2 + a.height ** 2),
+    )
+    .pop() as NonDeleted<ExcalidrawBindableElement>;
+};
+
+export const getHoveredElementForFocusPoint = (
+  point: GlobalPoint,
+  arrow: ExcalidrawArrowElement,
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
+  elementsMap: NonDeletedSceneElementsMap,
+  tolerance?: number,
+): ExcalidrawBindableElement | null => {
+  const candidateElements: NonDeleted<ExcalidrawBindableElement>[] = [];
+  // We need to to hit testing from front (end of the array) to back (beginning of the array)
+  // because array is ordered from lower z-index to highest and we want element z-index
+  // with higher z-index
+  for (let index = elements.length - 1; index >= 0; --index) {
+    const element = elements[index];
+
+    invariant(
+      !element.isDeleted,
+      "Elements in the function parameter for getAllElementsAtPositionForBinding() should not contain deleted elements",
+    );
+
+    if (
+      isBindableElement(element, false) &&
+      bindingBorderTest(element, point, elementsMap, tolerance)
+    ) {
+      candidateElements.push(element);
+    }
+  }
+
+  if (!candidateElements || candidateElements.length === 0) {
+    return null;
+  }
+
+  if (candidateElements.length === 1) {
+    return candidateElements[0];
+  }
+
+  const distanceFilteredCandidateElements = candidateElements
+    // Resolve by distance
+    .filter(
+      (el) =>
+        distanceToElement(el, elementsMap, point) <= getBindingGap(el, arrow) ||
+        isPointInElement(point, el, elementsMap),
+    );
+
+  if (distanceFilteredCandidateElements.length === 0) {
+    return null;
+  }
+
+  return distanceFilteredCandidateElements[0] as NonDeleted<ExcalidrawBindableElement>;
 };
 
 /**
@@ -163,9 +416,26 @@ export const hitElementBoundText = <Point extends GlobalPoint | LocalPoint>(
  */
 export const intersectElementWithLineSegment = (
   element: ExcalidrawElement,
+  elementsMap: ElementsMap,
   line: LineSegment<GlobalPoint>,
   offset: number = 0,
+  onlyFirst = false,
 ): GlobalPoint[] => {
+  // First check if the line intersects the element's axis-aligned bounding box
+  // as it is much faster than checking intersection against the element's shape
+  const intersectorBounds = [
+    Math.min(line[0][0] - offset, line[1][0] - offset),
+    Math.min(line[0][1] - offset, line[1][1] - offset),
+    Math.max(line[0][0] + offset, line[1][0] + offset),
+    Math.max(line[0][1] + offset, line[1][1] + offset),
+  ] as Bounds;
+  const elementBounds = getElementBounds(element, elementsMap);
+
+  if (!doBoundsIntersect(intersectorBounds, elementBounds)) {
+    return [];
+  }
+
+  // Do the actual intersection test against the element's shape
   switch (element.type) {
     case "rectangle":
     case "image":
@@ -173,67 +443,196 @@ export const intersectElementWithLineSegment = (
     case "iframe":
     case "embeddable":
     case "frame":
+    case "selection":
     case "magicframe":
-      return intersectRectanguloidWithLineSegment(element, line, offset);
+      return intersectRectanguloidWithLineSegment(
+        element,
+        elementsMap,
+        line,
+        offset,
+        onlyFirst,
+      );
     case "diamond":
-      return intersectDiamondWithLineSegment(element, line, offset);
+      return intersectDiamondWithLineSegment(
+        element,
+        elementsMap,
+        line,
+        offset,
+        onlyFirst,
+      );
     case "ellipse":
-      return intersectEllipseWithLineSegment(element, line, offset);
+      return intersectEllipseWithLineSegment(
-    default:
+        element,
-      throw new Error(`Unimplemented element type '${element.type}'`);
+        elementsMap,
+        line,
+        offset,
+      );
+    case "line":
+    case "freedraw":
+    case "arrow":
+      return intersectLinearOrFreeDrawWithLineSegment(element, line, onlyFirst);
   }
 };
 
+const curveIntersections = (
+  curves: Curve<GlobalPoint>[],
+  segment: LineSegment<GlobalPoint>,
+  intersections: GlobalPoint[],
+  center: GlobalPoint,
+  angle: Radians,
+  onlyFirst = false,
+) => {
+  for (const c of curves) {
+    // Optimize by doing a cheap bounding box check first
+    const b1 = getCubicBezierCurveBound(c[0], c[1], c[2], c[3]);
+    const b2 = [
+      Math.min(segment[0][0], segment[1][0]),
+      Math.min(segment[0][1], segment[1][1]),
+      Math.max(segment[0][0], segment[1][0]),
+      Math.max(segment[0][1], segment[1][1]),
+    ] as Bounds;
+
+    if (!doBoundsIntersect(b1, b2)) {
+      continue;
+    }
+
+    const hits = curveIntersectLineSegment(c, segment);
+
+    if (hits.length > 0) {
+      for (const j of hits) {
+        intersections.push(pointRotateRads(j, center, angle));
+      }
+
+      if (onlyFirst) {
+        return intersections;
+      }
+    }
+  }
+
+  return intersections;
+};
+
+const lineIntersections = (
+  lines: LineSegment<GlobalPoint>[],
+  segment: LineSegment<GlobalPoint>,
+  intersections: GlobalPoint[],
+  center: GlobalPoint,
+  angle: Radians,
+  onlyFirst = false,
+) => {
+  for (const l of lines) {
+    const intersection = lineSegmentIntersectionPoints(l, segment);
+    if (intersection) {
+      intersections.push(pointRotateRads(intersection, center, angle));
+
+      if (onlyFirst) {
+        return intersections;
+      }
+    }
+  }
+
+  return intersections;
+};
+
+const intersectLinearOrFreeDrawWithLineSegment = (
+  element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
+  segment: LineSegment<GlobalPoint>,
+  onlyFirst = false,
+): GlobalPoint[] => {
+  // NOTE: This is the only one which return the decomposed elements
+  // rotated! This is due to taking advantage of roughjs definitions.
+  const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+  const intersections: GlobalPoint[] = [];
+
+  for (const l of lines) {
+    const intersection = lineSegmentIntersectionPoints(l, segment);
+    if (intersection) {
+      intersections.push(intersection);
+
+      if (onlyFirst) {
+        return intersections;
+      }
+    }
+  }
+
+  for (const c of curves) {
+    // Optimize by doing a cheap bounding box check first
+    const b1 = getCubicBezierCurveBound(c[0], c[1], c[2], c[3]);
+    const b2 = [
+      Math.min(segment[0][0], segment[1][0]),
+      Math.min(segment[0][1], segment[1][1]),
+      Math.max(segment[0][0], segment[1][0]),
+      Math.max(segment[0][1], segment[1][1]),
+    ] as Bounds;
+
+    if (!doBoundsIntersect(b1, b2)) {
+      continue;
+    }
+
+    const hits = curveIntersectLineSegment(c, segment);
+
+    if (hits.length > 0) {
+      intersections.push(...hits);
+
+      if (onlyFirst) {
+        return intersections;
+      }
+    }
+  }
+
+  return intersections;
+};
+
 const intersectRectanguloidWithLineSegment = (
   element: ExcalidrawRectanguloidElement,
-  l: LineSegment<GlobalPoint>,
+  elementsMap: ElementsMap,
+  segment: LineSegment<GlobalPoint>,
   offset: number = 0,
+  onlyFirst = false,
 ): GlobalPoint[] => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
   // To emulate a rotated rectangle we rotate the point in the inverse angle
   // instead. It's all the same distance-wise.
   const rotatedA = pointRotateRads<GlobalPoint>(
-    l[0],
+    segment[0],
     center,
     -element.angle as Radians,
   );
   const rotatedB = pointRotateRads<GlobalPoint>(
-    l[1],
+    segment[1],
     center,
     -element.angle as Radians,
   );
+  const rotatedIntersector = lineSegment(rotatedA, rotatedB);
 
   // Get the element's building components we can test against
   const [sides, corners] = deconstructRectanguloidElement(element, offset);
 
-  return (
+  const intersections: GlobalPoint[] = [];
-    // Test intersection against the sides, keep only the valid
+
-    // intersection points and rotate them back to scene space
+  lineIntersections(
-    sides
+    sides,
-      .map((s) =>
+    rotatedIntersector,
-        lineSegmentIntersectionPoints(
+    intersections,
-          lineSegment<GlobalPoint>(rotatedA, rotatedB),
+    center,
-          s,
+    element.angle,
-        ),
+    onlyFirst,
-      )
-      .filter((x) => x != null)
-      .map((j) => pointRotateRads<GlobalPoint>(j!, center, element.angle))
-      // Test intersection against the corners which are cubic bezier curves,
-      // keep only the valid intersection points and rotate them back to scene
-      // space
-      .concat(
-        corners
-          .flatMap((t) =>
-            curveIntersectLineSegment(t, lineSegment(rotatedA, rotatedB)),
-          )
-          .filter((i) => i != null)
-          .map((j) => pointRotateRads(j, center, element.angle)),
-      )
-      // Remove duplicates
-      .filter(
-        (p, idx, points) => points.findIndex((d) => pointsEqual(p, d)) === idx,
-      )
   );
+
+  if (onlyFirst && intersections.length > 0) {
+    return intersections;
+  }
+
+  curveIntersections(
+    corners,
+    rotatedIntersector,
+    intersections,
+    center,
+    element.angle,
+    onlyFirst,
+  );
+
+  return intersections;
 };
 
 /**
@@ -245,43 +644,45 @@ const intersectRectanguloidWithLineSegment = (
  */
 const intersectDiamondWithLineSegment = (
   element: ExcalidrawDiamondElement,
+  elementsMap: ElementsMap,
   l: LineSegment<GlobalPoint>,
   offset: number = 0,
+  onlyFirst = false,
 ): GlobalPoint[] => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
 
   // Rotate the point to the inverse direction to simulate the rotated diamond
   // points. It's all the same distance-wise.
   const rotatedA = pointRotateRads(l[0], center, -element.angle as Radians);
   const rotatedB = pointRotateRads(l[1], center, -element.angle as Radians);
+  const rotatedIntersector = lineSegment(rotatedA, rotatedB);
 
-  const [sides, curves] = deconstructDiamondElement(element, offset);
+  const [sides, corners] = deconstructDiamondElement(element, offset);
+  const intersections: GlobalPoint[] = [];
 
-  return (
+  lineIntersections(
-    sides
+    sides,
-      .map((s) =>
+    rotatedIntersector,
-        lineSegmentIntersectionPoints(
+    intersections,
-          lineSegment<GlobalPoint>(rotatedA, rotatedB),
+    center,
-          s,
+    element.angle,
-        ),
+    onlyFirst,
-      )
-      .filter((p): p is GlobalPoint => p != null)
-      // Rotate back intersection points
-      .map((p) => pointRotateRads<GlobalPoint>(p!, center, element.angle))
-      .concat(
-        curves
-          .flatMap((p) =>
-            curveIntersectLineSegment(p, lineSegment(rotatedA, rotatedB)),
-          )
-          .filter((p) => p != null)
-          // Rotate back intersection points
-          .map((p) => pointRotateRads(p, center, element.angle)),
-      )
-      // Remove duplicates
-      .filter(
-        (p, idx, points) => points.findIndex((d) => pointsEqual(p, d)) === idx,
-      )
   );
+
+  if (onlyFirst && intersections.length > 0) {
+    return intersections;
+  }
+
+  curveIntersections(
+    corners,
+    rotatedIntersector,
+    intersections,
+    center,
+    element.angle,
+    onlyFirst,
+  );
+
+  return intersections;
 };
 
 /**
@@ -293,16 +694,134 @@ const intersectDiamondWithLineSegment = (
  */
 const intersectEllipseWithLineSegment = (
   element: ExcalidrawEllipseElement,
+  elementsMap: ElementsMap,
   l: LineSegment<GlobalPoint>,
   offset: number = 0,
 ): GlobalPoint[] => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
 
   const rotatedA = pointRotateRads(l[0], center, -element.angle as Radians);
   const rotatedB = pointRotateRads(l[1], center, -element.angle as Radians);
 
-  return ellipseLineIntersectionPoints(
+  return ellipseSegmentInterceptPoints(
     ellipse(center, element.width / 2 + offset, element.height / 2 + offset),
-    line(rotatedA, rotatedB),
+    lineSegment(rotatedA, rotatedB),
   ).map((p) => pointRotateRads(p, center, element.angle));
 };
+
+/**
+ * Check if the given point is considered on the given shape's border
+ *
+ * @param point
+ * @param element
+ * @param tolerance
+ * @returns
+ */
+const isPointOnElementOutline = (
+  point: GlobalPoint,
+  element: ExcalidrawElement,
+  elementsMap: ElementsMap,
+  tolerance = 1,
+) => distanceToElement(element, elementsMap, point) <= tolerance;
+
+/**
+ * Check if the given point is considered inside the element's border
+ *
+ * @param point
+ * @param element
+ * @returns
+ */
+export const isPointInElement = (
+  point: GlobalPoint,
+  element: ExcalidrawElement,
+  elementsMap: ElementsMap,
+) => {
+  if (
+    (isLinearElement(element) || isFreeDrawElement(element)) &&
+    !isPathALoop(element.points)
+  ) {
+    // There isn't any "inside" for a non-looping path
+    return false;
+  }
+
+  const [x1, y1, x2, y2] = getElementBounds(element, elementsMap);
+
+  if (!isPointWithinBounds(pointFrom(x1, y1), point, pointFrom(x2, y2))) {
+    return false;
+  }
+
+  const center = pointFrom<GlobalPoint>((x1 + x2) / 2, (y1 + y2) / 2);
+  const otherPoint = pointFromVector(
+    vectorScale(
+      vectorNormalize(vectorFromPoint(point, center, 0.1)),
+      Math.max(element.width, element.height) * 2,
+    ),
+    center,
+  );
+  const intersector = lineSegment(point, otherPoint);
+  const intersections = intersectElementWithLineSegment(
+    element,
+    elementsMap,
+    intersector,
+  ).filter((p, pos, arr) => arr.findIndex((q) => pointsEqual(q, p)) === pos);
+
+  return intersections.length % 2 === 1;
+};
+
+export const isBindableElementInsideOtherBindable = (
+  innerElement: ExcalidrawBindableElement,
+  outerElement: ExcalidrawBindableElement,
+  elementsMap: ElementsMap,
+): boolean => {
+  // Get corner points of the inner element based on its type
+  const getCornerPoints = (
+    element: ExcalidrawElement,
+    offset: number,
+  ): GlobalPoint[] => {
+    const { x, y, width, height, angle } = element;
+    const center = elementCenterPoint(element, elementsMap);
+
+    if (element.type === "diamond") {
+      // Diamond has 4 corner points at the middle of each side
+      const [topX, topY, rightX, rightY, bottomX, bottomY, leftX, leftY] =
+        getDiamondPoints(element);
+      const corners: GlobalPoint[] = [
+        pointFrom(x + topX, y + topY - offset), // top
+        pointFrom(x + rightX + offset, y + rightY), // right
+        pointFrom(x + bottomX, y + bottomY + offset), // bottom
+        pointFrom(x + leftX - offset, y + leftY), // left
+      ];
+      return corners.map((corner) => pointRotateRads(corner, center, angle));
+    }
+    if (element.type === "ellipse") {
+      // For ellipse, test points at the extremes (top, right, bottom, left)
+      const cx = x + width / 2;
+      const cy = y + height / 2;
+      const rx = width / 2;
+      const ry = height / 2;
+      const corners: GlobalPoint[] = [
+        pointFrom(cx, cy - ry - offset), // top
+        pointFrom(cx + rx + offset, cy), // right
+        pointFrom(cx, cy + ry + offset), // bottom
+        pointFrom(cx - rx - offset, cy), // left
+      ];
+      return corners.map((corner) => pointRotateRads(corner, center, angle));
+    }
+    // Rectangle and other rectangular shapes (image, text, etc.)
+    const corners: GlobalPoint[] = [
+      pointFrom(x - offset, y - offset), // top-left
+      pointFrom(x + width + offset, y - offset), // top-right
+      pointFrom(x + width + offset, y + height + offset), // bottom-right
+      pointFrom(x - offset, y + height + offset), // bottom-left
+    ];
+    return corners.map((corner) => pointRotateRads(corner, center, angle));
+  };
+
+  const offset = (-1 * Math.max(innerElement.width, innerElement.height)) / 20; // 5% offset
+  const innerCorners = getCornerPoints(innerElement, offset);
+
+  // Check if all corner points of the inner element are inside the outer element
+  return innerCorners.every((corner) =>
+    isPointInElement(corner, outerElement, elementsMap),
+  );
+};

packages/element/src/comparisons.ts

@@ -10,7 +10,14 @@ export const hasBackground = (type: ElementOrToolType) =>
   type === "freedraw";
 
 export const hasStrokeColor = (type: ElementOrToolType) =>
-  type !== "image" && type !== "frame" && type !== "magicframe";
+  type === "rectangle" ||
+  type === "ellipse" ||
+  type === "diamond" ||
+  type === "freedraw" ||
+  type === "arrow" ||
+  type === "line" ||
+  type === "text" ||
+  type === "embeddable";
 
 export const hasStrokeWidth = (type: ElementOrToolType) =>
   type === "rectangle" ||

packages/element/src/cropElement.ts

@@ -14,9 +14,8 @@ import {
 } from "@excalidraw/math";
 import { type Point } from "points-on-curve";
 
-import { elementCenterPoint } from "@excalidraw/common";
-
 import {
+  elementCenterPoint,
   getElementAbsoluteCoords,
   getResizedElementAbsoluteCoords,
 } from "./bounds";
@@ -34,6 +33,7 @@ export const MINIMAL_CROP_SIZE = 10;
 
 export const cropElement = (
   element: ExcalidrawImageElement,
+  elementsMap: ElementsMap,
   transformHandle: TransformHandleType,
   naturalWidth: number,
   naturalHeight: number,
@@ -63,7 +63,7 @@ export const cropElement = (
 
   const rotatedPointer = pointRotateRads(
     pointFrom(pointerX, pointerY),
-    elementCenterPoint(element),
+    elementCenterPoint(element, elementsMap),
     -element.angle as Radians,
   );
 

packages/element/src/distance.ts

@@ -6,27 +6,33 @@ import {
 
 import { ellipse, ellipseDistanceFromPoint } from "@excalidraw/math/ellipse";
 
-import { elementCenterPoint } from "@excalidraw/common";
-
 import type { GlobalPoint, Radians } from "@excalidraw/math";
 
 import {
   deconstructDiamondElement,
+  deconstructLinearOrFreeDrawElement,
   deconstructRectanguloidElement,
 } from "./utils";
 
+import { elementCenterPoint } from "./bounds";
+
 import type {
-  ExcalidrawBindableElement,
+  ElementsMap,
   ExcalidrawDiamondElement,
+  ExcalidrawElement,
   ExcalidrawEllipseElement,
+  ExcalidrawFreeDrawElement,
+  ExcalidrawLinearElement,
   ExcalidrawRectanguloidElement,
 } from "./types";
 
-export const distanceToBindableElement = (
+export const distanceToElement = (
-  element: ExcalidrawBindableElement,
+  element: ExcalidrawElement,
+  elementsMap: ElementsMap,
   p: GlobalPoint,
 ): number => {
   switch (element.type) {
+    case "selection":
     case "rectangle":
     case "image":
     case "text":
@@ -34,11 +40,15 @@ export const distanceToBindableElement = (
     case "embeddable":
     case "frame":
     case "magicframe":
-      return distanceToRectanguloidElement(element, p);
+      return distanceToRectanguloidElement(element, elementsMap, p);
     case "diamond":
-      return distanceToDiamondElement(element, p);
+      return distanceToDiamondElement(element, elementsMap, p);
     case "ellipse":
-      return distanceToEllipseElement(element, p);
+      return distanceToEllipseElement(element, elementsMap, p);
+    case "line":
+    case "arrow":
+    case "freedraw":
+      return distanceToLinearOrFreeDraElement(element, p);
   }
 };
 
@@ -52,9 +62,10 @@ export const distanceToBindableElement = (
  */
 const distanceToRectanguloidElement = (
   element: ExcalidrawRectanguloidElement,
+  elementsMap: ElementsMap,
   p: GlobalPoint,
 ) => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
   // To emulate a rotated rectangle we rotate the point in the inverse angle
   // instead. It's all the same distance-wise.
   const rotatedPoint = pointRotateRads(p, center, -element.angle as Radians);
@@ -80,9 +91,10 @@ const distanceToRectanguloidElement = (
  */
 const distanceToDiamondElement = (
   element: ExcalidrawDiamondElement,
+  elementsMap: ElementsMap,
   p: GlobalPoint,
 ): number => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
 
   // Rotate the point to the inverse direction to simulate the rotated diamond
   // points. It's all the same distance-wise.
@@ -108,12 +120,24 @@ const distanceToDiamondElement = (
  */
 const distanceToEllipseElement = (
   element: ExcalidrawEllipseElement,
+  elementsMap: ElementsMap,
   p: GlobalPoint,
 ): number => {
-  const center = elementCenterPoint(element);
+  const center = elementCenterPoint(element, elementsMap);
   return ellipseDistanceFromPoint(
     // Instead of rotating the ellipse, rotate the point to the inverse angle
     pointRotateRads(p, center, -element.angle as Radians),
     ellipse(center, element.width / 2, element.height / 2),
   );
 };
+
+const distanceToLinearOrFreeDraElement = (
+  element: ExcalidrawLinearElement | ExcalidrawFreeDrawElement,
+  p: GlobalPoint,
+) => {
+  const [lines, curves] = deconstructLinearOrFreeDrawElement(element);
+  return Math.min(
+    ...lines.map((s) => distanceToLineSegment(p, s)),
+    ...curves.map((a) => curvePointDistance(a, p)),
+  );
+};

packages/element/src/distribute.ts

@@ -1,7 +1,11 @@
-import { getCommonBoundingBox } from "./bounds";
+import type { AppState } from "@excalidraw/excalidraw/types";
-import { newElementWith } from "./mutateElement";
 
-import { getMaximumGroups } from "./groups";
+import { updateBoundElements } from "./binding";
+import { getCommonBoundingBox } from "./bounds";
+
+import { getSelectedElementsByGroup } from "./groups";
+
+import type { Scene } from "./Scene";
 
 import type { ElementsMap, ExcalidrawElement } from "./types";
 
@@ -14,6 +18,8 @@ export const distributeElements = (
   selectedElements: ExcalidrawElement[],
   elementsMap: ElementsMap,
   distribution: Distribution,
+  appState: Readonly<AppState>,
+  scene: Scene,
 ): ExcalidrawElement[] => {
   const [start, mid, end, extent] =
     distribution.axis === "x"
@@ -21,7 +27,11 @@ export const distributeElements = (
       : (["minY", "midY", "maxY", "height"] as const);
 
   const bounds = getCommonBoundingBox(selectedElements);
-  const groups = getMaximumGroups(selectedElements, elementsMap)
+  const groups = getSelectedElementsByGroup(
+    selectedElements,
+    elementsMap,
+    appState,
+  )
     .map((group) => [group, getCommonBoundingBox(group)] as const)
     .sort((a, b) => a[1][mid] - b[1][mid]);
 
@@ -59,12 +69,16 @@ export const distributeElements = (
         translation[distribution.axis] = pos - box[mid];
       }
 
-      return group.map((element) =>
+      return group.map((element) => {
-        newElementWith(element, {
+        const updatedElement = scene.mutateElement(element, {
           x: element.x + translation.x,
           y: element.y + translation.y,
-        }),
+        });
-      );
+        updateBoundElements(element, scene, {
+          simultaneouslyUpdated: group,
+        });
+        return updatedElement;
+      });
     });
   }
 
@@ -83,11 +97,15 @@ export const distributeElements = (
     pos += step;
     pos += box[extent];
 
-    return group.map((element) =>
+    return group.map((element) => {
-      newElementWith(element, {
+      const updatedElement = scene.mutateElement(element, {
         x: element.x + translation.x,
         y: element.y + translation.y,
-      }),
+      });
-    );
+      updateBoundElements(element, scene, {
+        simultaneouslyUpdated: group,
+      });
+      return updatedElement;
+    });
   });
 };

packages/element/src/dragElements.ts

@@ -1,7 +1,9 @@
 import {
+  type Bounds,
   TEXT_AUTOWRAP_THRESHOLD,
   getGridPoint,
   getFontString,
+  DRAGGING_THRESHOLD,
 } from "@excalidraw/common";
 
 import type {
@@ -13,7 +15,7 @@ import type {
 
 import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
 
-import { updateBoundElements } from "./binding";
+import { unbindBindingElement, updateBoundElements } from "./binding";
 import { getCommonBounds } from "./bounds";
 import { getPerfectElementSize } from "./sizeHelpers";
 import { getBoundTextElement } from "./textElement";
@@ -28,7 +30,6 @@ import {
 
 import type { Scene } from "./Scene";
 
-import type { Bounds } from "./bounds";
 import type { ExcalidrawElement } from "./types";
 
 export const dragSelectedElements = (
@@ -102,9 +103,26 @@ export const dragSelectedElements = (
     gridSize,
   );
 
+  const elementsToUpdateIds = new Set(
+    Array.from(elementsToUpdate, (el) => el.id),
+  );
+
   elementsToUpdate.forEach((element) => {
-    updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+    const isArrow = !isArrowElement(element);
+    const isStartBoundElementSelected =
+      isArrow ||
+      (element.startBinding
+        ? elementsToUpdateIds.has(element.startBinding.elementId)
+        : false);
+    const isEndBoundElementSelected =
+      isArrow ||
+      (element.endBinding
+        ? elementsToUpdateIds.has(element.endBinding.elementId)
+        : false);
+
     if (!isArrowElement(element)) {
+      updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+
       // skip arrow labels since we calculate its position during render
       const textElement = getBoundTextElement(
         element,
@@ -121,6 +139,33 @@ export const dragSelectedElements = (
       updateBoundElements(element, scene, {
         simultaneouslyUpdated: Array.from(elementsToUpdate),
       });
+    } else if (
+      // NOTE: Add a little initial drag to the arrow dragging when the arrow
+      // is the single element being dragged to avoid accidentally unbinding
+      // the arrow when the user just wants to select it.
+
+      elementsToUpdate.size > 1 ||
+      Math.max(Math.abs(adjustedOffset.x), Math.abs(adjustedOffset.y)) >
+        DRAGGING_THRESHOLD ||
+      (!element.startBinding && !element.endBinding)
+    ) {
+      updateElementCoords(pointerDownState, element, scene, adjustedOffset);
+
+      const shouldUnbindStart =
+        element.startBinding && !isStartBoundElementSelected;
+      const shouldUnbindEnd = element.endBinding && !isEndBoundElementSelected;
+      if (shouldUnbindStart || shouldUnbindEnd) {
+        // NOTE: Moving the bound arrow should unbind it, otherwise we would
+        // have weird situations, like 0 lenght arrow when the user moves
+        // the arrow outside a filled shape suddenly forcing the arrow start
+        // and end point to jump "outside" the shape.
+        if (shouldUnbindStart) {
+          unbindBindingElement(element, "start", scene);
+        }
+        if (shouldUnbindEnd) {
+          unbindBindingElement(element, "end", scene);
+        }
+      }
     }
   });
 };

packages/element/src/elbowArrow.ts

@@ -14,25 +14,26 @@ import {
 } from "@excalidraw/math";
 
 import {
+  type Bounds,
   BinaryHeap,
   invariant,
   isAnyTrue,
-  tupleToCoors,
   getSizeFromPoints,
   isDevEnv,
+  arrayToMap,
 } from "@excalidraw/common";
 
 import type { AppState } from "@excalidraw/excalidraw/types";
 
 import {
   bindPointToSnapToElementOutline,
-  FIXED_BINDING_DISTANCE,
   getHeadingForElbowArrowSnap,
   getGlobalFixedPointForBindableElement,
-  snapToMid,
+  getBindingGap,
-  getHoveredElementForBinding,
+  maxBindingDistance_simple,
+  BASE_BINDING_GAP_ELBOW,
 } from "./binding";
-import { distanceToBindableElement } from "./distance";
+import { distanceToElement } from "./distance";
 import {
   compareHeading,
   flipHeading,
@@ -51,10 +52,9 @@ import {
   type ExcalidrawElbowArrowElement,
   type NonDeletedSceneElementsMap,
 } from "./types";
+import { aabbForElement, pointInsideBounds } from "./bounds";
+import { getHoveredElementForBinding } from "./collision";
 
-import { aabbForElement, pointInsideBounds } from "./shapes";
-
-import type { Bounds } from "./bounds";
 import type { Heading } from "./heading";
 import type {
   Arrowhead,
@@ -63,6 +63,7 @@ import type {
   FixedPointBinding,
   FixedSegment,
   NonDeletedExcalidrawElement,
+  Ordered,
 } from "./types";
 
 type GridAddress = [number, number] & { _brand: "gridaddress" };
@@ -359,6 +360,12 @@ const handleSegmentRelease = (
     null,
   );
 
+  if (!restoredPoints || restoredPoints.length < 2) {
+    throw new Error(
+      "Property 'points' is required in the update returned by normalizeArrowElementUpdate()",
+    );
+  }
+
   const nextPoints: GlobalPoint[] = [];
 
   // First part of the arrow are the old points
@@ -706,7 +713,7 @@ const handleEndpointDrag = (
   endGlobalPoint: GlobalPoint,
   hoveredStartElement: ExcalidrawBindableElement | null,
   hoveredEndElement: ExcalidrawBindableElement | null,
-) => {
+): ElementUpdate<ExcalidrawElbowArrowElement> => {
   let startIsSpecial = arrow.startIsSpecial ?? null;
   let endIsSpecial = arrow.endIsSpecial ?? null;
   const globalUpdatedPoints = updatedPoints.map((p, i) =>
@@ -741,8 +748,15 @@ const handleEndpointDrag = (
 
   // Calculate the moving second point connection and add the start point
   {
-    const secondPoint = globalUpdatedPoints[startIsSpecial ? 2 : 1];
+    const secondPoint = globalUpdatedPoints.at(startIsSpecial ? 2 : 1);
-    const thirdPoint = globalUpdatedPoints[startIsSpecial ? 3 : 2];
+    const thirdPoint = globalUpdatedPoints.at(startIsSpecial ? 3 : 2);
+
+    if (!secondPoint || !thirdPoint) {
+      throw new Error(
+        `Second and third points must exist when handling endpoint drag (${startIsSpecial})`,
+      );
+    }
+
     const startIsHorizontal = headingIsHorizontal(startHeading);
     const secondIsHorizontal = headingIsHorizontal(
       vectorToHeading(vectorFromPoint(secondPoint, thirdPoint)),
@@ -801,10 +815,19 @@ const handleEndpointDrag = (
 
   // Calculate the moving second to last point connection
   {
-    const secondToLastPoint =
+    const secondToLastPoint = globalUpdatedPoints.at(
-      globalUpdatedPoints[globalUpdatedPoints.length - (endIsSpecial ? 3 : 2)];
+      globalUpdatedPoints.length - (endIsSpecial ? 3 : 2),
-    const thirdToLastPoint =
+    );
-      globalUpdatedPoints[globalUpdatedPoints.length - (endIsSpecial ? 4 : 3)];
+    const thirdToLastPoint = globalUpdatedPoints.at(
+      globalUpdatedPoints.length - (endIsSpecial ? 4 : 3),
+    );
+
+    if (!secondToLastPoint || !thirdToLastPoint) {
+      throw new Error(
+        `Second and third to last points must exist when handling endpoint drag (${endIsSpecial})`,
+      );
+    }
+
     const endIsHorizontal = headingIsHorizontal(endHeading);
     const secondIsHorizontal = headingForPointIsHorizontal(
       thirdToLastPoint,
@@ -898,50 +921,6 @@ export const updateElbowArrowPoints = (
     return { points: updates.points ?? arrow.points };
   }
 
-  // NOTE (mtolmacs): This is a temporary check to ensure that the incoming elbow
-  // arrow size is valid. This check will be removed once the issue is identified
-  if (
-    arrow.x < -MAX_POS ||
-    arrow.x > MAX_POS ||
-    arrow.y < -MAX_POS ||
-    arrow.y > MAX_POS ||
-    arrow.x + (updates?.points?.[updates?.points?.length - 1]?.[0] ?? 0) <
-      -MAX_POS ||
-    arrow.x + (updates?.points?.[updates?.points?.length - 1]?.[0] ?? 0) >
-      MAX_POS ||
-    arrow.y + (updates?.points?.[updates?.points?.length - 1]?.[1] ?? 0) <
-      -MAX_POS ||
-    arrow.y + (updates?.points?.[updates?.points?.length - 1]?.[1] ?? 0) >
-      MAX_POS ||
-    arrow.x + (arrow?.points?.[arrow?.points?.length - 1]?.[0] ?? 0) <
-      -MAX_POS ||
-    arrow.x + (arrow?.points?.[arrow?.points?.length - 1]?.[0] ?? 0) >
-      MAX_POS ||
-    arrow.y + (arrow?.points?.[arrow?.points?.length - 1]?.[1] ?? 0) <
-      -MAX_POS ||
-    arrow.y + (arrow?.points?.[arrow?.points?.length - 1]?.[1] ?? 0) > MAX_POS
-  ) {
-    console.error(
-      "Elbow arrow (or update) is outside reasonable bounds (> 1e6)",
-      {
-        arrow,
-        updates,
-      },
-    );
-  }
-  // @ts-ignore See above note
-  arrow.x = clamp(arrow.x, -MAX_POS, MAX_POS);
-  // @ts-ignore See above note
-  arrow.y = clamp(arrow.y, -MAX_POS, MAX_POS);
-  if (updates.points) {
-    updates.points = updates.points.map(([x, y]) =>
-      pointFrom<LocalPoint>(
-        clamp(x, -MAX_POS, MAX_POS),
-        clamp(y, -MAX_POS, MAX_POS),
-      ),
-    );
-  }
-
   if (!import.meta.env.PROD) {
     invariant(
       !updates.points || updates.points.length >= 2,
@@ -1265,6 +1244,7 @@ const getElbowArrowData = (
   const startGlobalPoint = getGlobalPoint(
     {
       ...arrow,
+      angle: 0,
       type: "arrow",
       elbowed: true,
       points: nextPoints,
@@ -1273,11 +1253,13 @@ const getElbowArrowData = (
     arrow.startBinding?.fixedPoint,
     origStartGlobalPoint,
     hoveredStartElement,
+    elementsMap,
     options?.isDragging,
   );
   const endGlobalPoint = getGlobalPoint(
     {
       ...arrow,
+      angle: 0,
       type: "arrow",
       elbowed: true,
       points: nextPoints,
@@ -1286,6 +1268,7 @@ const getElbowArrowData = (
     arrow.endBinding?.fixedPoint,
     origEndGlobalPoint,
     hoveredEndElement,
+    elementsMap,
     options?.isDragging,
   );
   const startHeading = getBindPointHeading(
@@ -1293,12 +1276,16 @@ const getElbowArrowData = (
     endGlobalPoint,
     hoveredStartElement,
     origStartGlobalPoint,
+    elementsMap,
+    options?.zoom,
   );
   const endHeading = getBindPointHeading(
     endGlobalPoint,
     startGlobalPoint,
     hoveredEndElement,
     origEndGlobalPoint,
+    elementsMap,
+    options?.zoom,
   );
   const startPointBounds = [
     startGlobalPoint[0] - 2,
@@ -1315,11 +1302,12 @@ const getElbowArrowData = (
   const startElementBounds = hoveredStartElement
     ? aabbForElement(
         hoveredStartElement,
+        elementsMap,
         offsetFromHeading(
           startHeading,
           arrow.startArrowhead
-            ? FIXED_BINDING_DISTANCE * 6
+            ? getBindingGap(hoveredStartElement, { elbowed: true }) * 6
-            : FIXED_BINDING_DISTANCE * 2,
+            : getBindingGap(hoveredStartElement, { elbowed: true }) * 2,
           1,
         ),
       )
@@ -1327,11 +1315,12 @@ const getElbowArrowData = (
   const endElementBounds = hoveredEndElement
     ? aabbForElement(
         hoveredEndElement,
+        elementsMap,
         offsetFromHeading(
           endHeading,
           arrow.endArrowhead
-            ? FIXED_BINDING_DISTANCE * 6
+            ? getBindingGap(hoveredEndElement, { elbowed: true }) * 6
-            : FIXED_BINDING_DISTANCE * 2,
+            : getBindingGap(hoveredEndElement, { elbowed: true }) * 2,
           1,
         ),
       )
@@ -1342,6 +1331,7 @@ const getElbowArrowData = (
       hoveredEndElement
         ? aabbForElement(
             hoveredEndElement,
+            elementsMap,
             offsetFromHeading(endHeading, BASE_PADDING, BASE_PADDING),
           )
         : endPointBounds,
@@ -1351,6 +1341,7 @@ const getElbowArrowData = (
       hoveredStartElement
         ? aabbForElement(
             hoveredStartElement,
+            elementsMap,
             offsetFromHeading(startHeading, BASE_PADDING, BASE_PADDING),
           )
         : startPointBounds,
@@ -1376,8 +1367,8 @@ const getElbowArrowData = (
             ? 0
             : BASE_PADDING -
                 (arrow.startArrowhead
-                  ? FIXED_BINDING_DISTANCE * 6
+                  ? BASE_BINDING_GAP_ELBOW * 6
-                  : FIXED_BINDING_DISTANCE * 2),
+                  : BASE_BINDING_GAP_ELBOW * 2),
           BASE_PADDING,
         ),
     boundsOverlap
@@ -1392,13 +1383,13 @@ const getElbowArrowData = (
             ? 0
             : BASE_PADDING -
                 (arrow.endArrowhead
-                  ? FIXED_BINDING_DISTANCE * 6
+                  ? BASE_BINDING_GAP_ELBOW * 6
-                  : FIXED_BINDING_DISTANCE * 2),
+                  : BASE_BINDING_GAP_ELBOW * 2),
           BASE_PADDING,
         ),
     boundsOverlap,
-    hoveredStartElement && aabbForElement(hoveredStartElement),
+    hoveredStartElement && aabbForElement(hoveredStartElement, elementsMap),
-    hoveredEndElement && aabbForElement(hoveredEndElement),
+    hoveredEndElement && aabbForElement(hoveredEndElement, elementsMap),
   );
   const startDonglePosition = getDonglePosition(
     dynamicAABBs[0],
@@ -2107,16 +2098,7 @@ const normalizeArrowElementUpdate = (
   nextFixedSegments: readonly FixedSegment[] | null,
   startIsSpecial?: ExcalidrawElbowArrowElement["startIsSpecial"],
   endIsSpecial?: ExcalidrawElbowArrowElement["startIsSpecial"],
-): {
+): ElementUpdate<ExcalidrawElbowArrowElement> => {
-  points: LocalPoint[];
-  x: number;
-  y: number;
-  width: number;
-  height: number;
-  fixedSegments: readonly FixedSegment[] | null;
-  startIsSpecial?: ExcalidrawElbowArrowElement["startIsSpecial"];
-  endIsSpecial?: ExcalidrawElbowArrowElement["startIsSpecial"];
-} => {
   const offsetX = global[0][0];
   const offsetY = global[0][1];
   let points = global.map((p) =>
@@ -2229,35 +2211,28 @@ const getGlobalPoint = (
   fixedPointRatio: [number, number] | undefined | null,
   initialPoint: GlobalPoint,
   element?: ExcalidrawBindableElement | null,
+  elementsMap?: ElementsMap,
   isDragging?: boolean,
 ): GlobalPoint => {
   if (isDragging) {
-    if (element) {
+    if (element && elementsMap) {
-      const snapPoint = bindPointToSnapToElementOutline(
+      return bindPointToSnapToElementOutline(
         arrow,
         element,
         startOrEnd,
+        elementsMap,
       );
-
-      return snapToMid(element, snapPoint);
     }
 
     return initialPoint;
   }
 
   if (element) {
-    const fixedGlobalPoint = getGlobalFixedPointForBindableElement(
+    return getGlobalFixedPointForBindableElement(
       fixedPointRatio || [0, 0],
       element,
+      elementsMap ?? arrayToMap([element]),
     );
-
-    // NOTE: Resize scales the binding position point too, so we need to update it
-    return Math.abs(
-      distanceToBindableElement(element, fixedGlobalPoint) -
-        FIXED_BINDING_DISTANCE,
-    ) > 0.01
-      ? bindPointToSnapToElementOutline(arrow, element, startOrEnd)
-      : fixedGlobalPoint;
   }
 
   return initialPoint;
@@ -2268,6 +2243,8 @@ const getBindPointHeading = (
   otherPoint: GlobalPoint,
   hoveredElement: ExcalidrawBindableElement | null | undefined,
   origPoint: GlobalPoint,
+  elementsMap: ElementsMap,
+  zoom?: AppState["zoom"],
 ): Heading =>
   getHeadingForElbowArrowSnap(
     p,
@@ -2276,7 +2253,8 @@ const getBindPointHeading = (
     hoveredElement &&
       aabbForElement(
         hoveredElement,
-        Array(4).fill(distanceToBindableElement(hoveredElement, p)) as [
+        elementsMap,
+        Array(4).fill(distanceToElement(hoveredElement, elementsMap, p)) as [
           number,
           number,
           number,
@@ -2284,21 +2262,21 @@ const getBindPointHeading = (
         ],
       ),
     origPoint,
+    elementsMap,
+    zoom,
   );
 
 const getHoveredElement = (
   origPoint: GlobalPoint,
   elementsMap: NonDeletedSceneElementsMap,
-  elements: readonly NonDeletedExcalidrawElement[],
+  elements: readonly Ordered<NonDeletedExcalidrawElement>[],
   zoom?: AppState["zoom"],
 ) => {
   return getHoveredElementForBinding(
-    tupleToCoors(origPoint),
+    origPoint,
     elements,
     elementsMap,
-    zoom,
+    maxBindingDistance_simple(zoom),
-    true,
-    true,
   );
 };
 

packages/element/src/embeddable.ts

@@ -23,7 +23,7 @@ type IframeDataWithSandbox = MarkRequired<IframeData, "sandbox">;
 const embeddedLinkCache = new Map<string, IframeDataWithSandbox>();
 
 const RE_YOUTUBE =
-  /^(?:http(?:s)?:\/\/)?(?:www\.)?youtu(?:be\.com|\.be)\/(embed\/|watch\?v=|shorts\/|playlist\?list=|embed\/videoseries\?list=)?([a-zA-Z0-9_-]+)(?:\?t=|&t=|\?start=|&start=)?([a-zA-Z0-9_-]+)?[^\s]*$/;
+  /^(?:http(?:s)?:\/\/)?(?:www\.)?youtu(?:be\.com|\.be)\/(embed\/|watch\?v=|shorts\/|playlist\?list=|embed\/videoseries\?list=)?([a-zA-Z0-9_-]+)/;
 
 const RE_VIMEO =
   /^(?:http(?:s)?:\/\/)?(?:(?:w){3}\.)?(?:player\.)?vimeo\.com\/(?:video\/)?([^?\s]+)(?:\?.*)?$/;
@@ -56,11 +56,86 @@ const RE_REDDIT =
 const RE_REDDIT_EMBED =
   /^<blockquote[\s\S]*?\shref=["'](https?:\/\/(?:www\.)?reddit\.com\/[^"']*)/i;
 
+const parseYouTubeLikeTimestamp = (url: string): number => {
+  let timeParam: string | null | undefined;
+
+  try {
+    const urlObj = new URL(url.startsWith("http") ? url : `https://${url}`);
+    timeParam =
+      urlObj.searchParams.get("t") || urlObj.searchParams.get("start");
+  } catch (error) {
+    const timeMatch = url.match(/[?&#](?:t|start)=([^&#\s]+)/);
+    timeParam = timeMatch?.[1];
+  }
+
+  if (!timeParam) {
+    return 0;
+  }
+
+  if (/^\d+$/.test(timeParam)) {
+    return parseInt(timeParam, 10);
+  }
+
+  const timeMatch = timeParam.match(/^(?:(\d+)h)?(?:(\d+)m)?(?:(\d+)s)?$/);
+  if (!timeMatch) {
+    return 0;
+  }
+
+  const [, hours = "0", minutes = "0", seconds = "0"] = timeMatch;
+  return parseInt(hours) * 3600 + parseInt(minutes) * 60 + parseInt(seconds);
+};
+
+const parseGoogleDriveVideoLink = (
+  url: string,
+): { fileId: string; resourceKey?: string; timestamp?: number } | null => {
+  try {
+    const urlObj = new URL(url.startsWith("http") ? url : `https://${url}`);
+    const hostname = urlObj.hostname.replace(/^www\./, "");
+    if (hostname !== "drive.google.com") {
+      return null;
+    }
+
+    let fileId: string | null = null;
+    const pathMatch = urlObj.pathname.match(/^\/file\/d\/([^/]+)(?:\/|$)/);
+    if (pathMatch?.[1]) {
+      fileId = pathMatch[1];
+    } else if (urlObj.pathname === "/open" || urlObj.pathname === "/uc") {
+      // Shared Drive links can be emitted as:
+      // - /open?id=<fileId> (common "open in Drive" format)
+      // - /uc?...&id=<fileId> (download/export endpoint often seen in copied links)
+      fileId = urlObj.searchParams.get("id");
+    }
+
+    if (!fileId || !/^[a-zA-Z0-9_-]+$/.test(fileId)) {
+      return null;
+    }
+
+    // Some Drive share links include `resourcekey` for access to link-shared
+    // files; preserve it in the preview URL so embeds keep working.
+    const resourceKey = urlObj.searchParams.get("resourcekey");
+    const timestamp = parseYouTubeLikeTimestamp(urlObj.toString());
+
+    return {
+      fileId,
+      resourceKey:
+        resourceKey && /^[a-zA-Z0-9_-]+$/.test(resourceKey)
+          ? resourceKey
+          : undefined,
+      // Drive accepts YouTube-like `t` formats (e.g. `t=90`, `t=1m30s`);
+      // normalize to seconds for a stable preview URL.
+      timestamp: timestamp > 0 ? timestamp : undefined,
+    };
+  } catch (error) {
+    return null;
+  }
+};
+
 const ALLOWED_DOMAINS = new Set([
   "youtube.com",
   "youtu.be",
   "vimeo.com",
   "player.vimeo.com",
+  "drive.google.com",
   "figma.com",
   "link.excalidraw.com",
   "gist.github.com",
@@ -79,6 +154,7 @@ const ALLOW_SAME_ORIGIN = new Set([
   "youtu.be",
   "vimeo.com",
   "player.vimeo.com",
+  "drive.google.com",
   "figma.com",
   "twitter.com",
   "x.com",
@@ -113,7 +189,8 @@ export const getEmbedLink = (
   let aspectRatio = { w: 560, h: 840 };
   const ytLink = link.match(RE_YOUTUBE);
   if (ytLink?.[2]) {
-    const time = ytLink[3] ? `&start=${ytLink[3]}` : ``;
+    const startTime = parseYouTubeLikeTimestamp(originalLink);
+    const time = startTime > 0 ? `&start=${startTime}` : ``;
     const isPortrait = link.includes("shorts");
     type = "video";
     switch (ytLink[1]) {
@@ -171,6 +248,36 @@ export const getEmbedLink = (
     };
   }
 
+  const googleDriveVideo = parseGoogleDriveVideoLink(link);
+  if (googleDriveVideo) {
+    type = "video";
+    const searchParams = new URLSearchParams();
+    if (googleDriveVideo.resourceKey) {
+      searchParams.set("resourcekey", googleDriveVideo.resourceKey);
+    }
+    if (googleDriveVideo.timestamp) {
+      searchParams.set("t", `${googleDriveVideo.timestamp}`);
+    }
+
+    const search = searchParams.toString();
+    link = `https://drive.google.com/file/d/${googleDriveVideo.fileId}/preview${
+      search ? `?${search}` : ""
+    }`;
+    aspectRatio = { w: 560, h: 315 };
+    embeddedLinkCache.set(originalLink, {
+      link,
+      intrinsicSize: aspectRatio,
+      type,
+      sandbox: { allowSameOrigin },
+    });
+    return {
+      link,
+      intrinsicSize: aspectRatio,
+      type,
+      sandbox: { allowSameOrigin },
+    };
+  }
+
   const figmaLink = link.match(RE_FIGMA);
   if (figmaLink) {
     type = "generic";

packages/element/src/flowchart.ts

@@ -7,7 +7,7 @@ import type {
   PendingExcalidrawElements,
 } from "@excalidraw/excalidraw/types";
 
-import { bindLinearElement } from "./binding";
+import { bindBindingElement } from "./binding";
 import { updateElbowArrowPoints } from "./elbowArrow";
 import {
   HEADING_DOWN,
@@ -21,7 +21,7 @@ import {
 import { LinearElementEditor } from "./linearElementEditor";
 import { mutateElement } from "./mutateElement";
 import { newArrowElement, newElement } from "./newElement";
-import { aabbForElement } from "./shapes";
+import { aabbForElement } from "./bounds";
 import { elementsAreInFrameBounds, elementOverlapsWithFrame } from "./frame";
 import {
   isBindableElement,
@@ -95,10 +95,11 @@ const getNodeRelatives = (
           type === "predecessors" ? el.points[el.points.length - 1] : [0, 0]
         ) as Readonly<LocalPoint>;
 
-        const heading = headingForPointFromElement(node, aabbForElement(node), [
+        const heading = headingForPointFromElement(
-          edgePoint[0] + el.x,
+          node,
-          edgePoint[1] + el.y,
+          aabbForElement(node, elementsMap),
-        ] as Readonly<GlobalPoint>);
+          [edgePoint[0] + el.x, edgePoint[1] + el.y] as Readonly<GlobalPoint>,
+        );
 
         acc.push({
           relative,
@@ -445,8 +446,14 @@ const createBindingArrow = (
 
   const elementsMap = scene.getNonDeletedElementsMap();
 
-  bindLinearElement(bindingArrow, startBindingElement, "start", scene);
+  bindBindingElement(
-  bindLinearElement(bindingArrow, endBindingElement, "end", scene);
+    bindingArrow,
+    startBindingElement,
+    "orbit",
+    "start",
+    scene,
+  );
+  bindBindingElement(bindingArrow, endBindingElement, "orbit", "end", scene);
 
   const changedElements = new Map<string, OrderedExcalidrawElement>();
   changedElements.set(

packages/element/src/fractionalIndex.ts

@@ -2,7 +2,7 @@ import { generateNKeysBetween } from "fractional-indexing";
 
 import { arrayToMap } from "@excalidraw/common";
 
-import { mutateElement } from "./mutateElement";
+import { mutateElement, newElementWith } from "./mutateElement";
 import { getBoundTextElement } from "./textElement";
 import { hasBoundTextElement } from "./typeChecks";
 
@@ -11,6 +11,7 @@ import type {
   ExcalidrawElement,
   FractionalIndex,
   OrderedExcalidrawElement,
+  SceneElementsMap,
 } from "./types";
 
 export class InvalidFractionalIndexError extends Error {
@@ -161,9 +162,15 @@ export const syncMovedIndices = (
 
     // try generatating indices, throws on invalid movedElements
     const elementsUpdates = generateIndices(elements, indicesGroups);
-    const elementsCandidates = elements.map((x) =>
+    const elementsCandidates = elements.map((x) => {
-      elementsUpdates.has(x) ? { ...x, ...elementsUpdates.get(x) } : x,
+      const elementUpdates = elementsUpdates.get(x);
-    );
+
+      if (elementUpdates) {
+        return { ...x, index: elementUpdates.index };
+      }
+
+      return x;
+    });
 
     // ensure next indices are valid before mutation, throws on invalid ones
     validateFractionalIndices(
@@ -177,8 +184,8 @@ export const syncMovedIndices = (
     );
 
     // split mutation so we don't end up in an incosistent state
-    for (const [element, update] of elementsUpdates) {
+    for (const [element, { index }] of elementsUpdates) {
-      mutateElement(element, elementsMap, update);
+      mutateElement(element, elementsMap, { index });
     }
   } catch (e) {
     // fallback to default sync
@@ -189,7 +196,7 @@ export const syncMovedIndices = (
 };
 
 /**
- * Synchronizes all invalid fractional indices with the array order by mutating passed elements.
+ * Synchronizes all invalid fractional indices within the array order by mutating elements in the passed array.
  *
  * WARN: in edge cases it could modify the elements which were not moved, as it's impossible to guess the actually moved elements from the elements array itself.
  */
@@ -200,13 +207,32 @@ export const syncInvalidIndices = (
   const indicesGroups = getInvalidIndicesGroups(elements);
   const elementsUpdates = generateIndices(elements, indicesGroups);
 
-  for (const [element, update] of elementsUpdates) {
+  for (const [element, { index }] of elementsUpdates) {
-    mutateElement(element, elementsMap, update);
+    mutateElement(element, elementsMap, { index });
   }
 
   return elements as OrderedExcalidrawElement[];
 };
 
+/**
+ * Synchronizes all invalid fractional indices within the array order by creating new instances of elements with corrected indices.
+ *
+ * WARN: in edge cases it could modify the elements which were not moved, as it's impossible to guess the actually moved elements from the elements array itself.
+ */
+export const syncInvalidIndicesImmutable = (
+  elements: readonly ExcalidrawElement[],
+): SceneElementsMap | undefined => {
+  const syncedElements = arrayToMap(elements);
+  const indicesGroups = getInvalidIndicesGroups(elements);
+  const elementsUpdates = generateIndices(elements, indicesGroups);
+
+  for (const [element, { index }] of elementsUpdates) {
+    syncedElements.set(element.id, newElementWith(element, { index }));
+  }
+
+  return syncedElements as SceneElementsMap;
+};
+
 /**
  * Get contiguous groups of indices of passed moved elements.
  *

packages/element/src/groups.ts

@@ -7,6 +7,8 @@ import type { Mutable } from "@excalidraw/common/utility-types";
 
 import { getBoundTextElement } from "./textElement";
 
+import { isBoundToContainer } from "./typeChecks";
+
 import { makeNextSelectedElementIds, getSelectedElements } from "./selection";
 
 import type {
@@ -402,3 +404,78 @@ export const getNewGroupIdsForDuplication = (
 
   return copy;
 };
+
+// given a list of selected elements, return the element grouped by their immediate group selected state
+// in the case if only one group is selected and all elements selected are within the group, it will respect group hierarchy in accordance to their nested grouping order
+export const getSelectedElementsByGroup = (
+  selectedElements: ExcalidrawElement[],
+  elementsMap: ElementsMap,
+  appState: Readonly<AppState>,
+): ExcalidrawElement[][] => {
+  const selectedGroupIds = getSelectedGroupIds(appState);
+  const unboundElements = selectedElements.filter(
+    (element) => !isBoundToContainer(element),
+  );
+  const groups: Map<string, ExcalidrawElement[]> = new Map();
+  const elements: Map<string, ExcalidrawElement[]> = new Map();
+
+  // helper function to add an element to the elements map
+  const addToElementsMap = (element: ExcalidrawElement) => {
+    // elements
+    const currentElementMembers = elements.get(element.id) || [];
+    const boundTextElement = getBoundTextElement(element, elementsMap);
+
+    if (boundTextElement) {
+      currentElementMembers.push(boundTextElement);
+    }
+    elements.set(element.id, [...currentElementMembers, element]);
+  };
+
+  // helper function to add an element to the groups map
+  const addToGroupsMap = (element: ExcalidrawElement, groupId: string) => {
+    // groups
+    const currentGroupMembers = groups.get(groupId) || [];
+    const boundTextElement = getBoundTextElement(element, elementsMap);
+
+    if (boundTextElement) {
+      currentGroupMembers.push(boundTextElement);
+    }
+    groups.set(groupId, [...currentGroupMembers, element]);
+  };
+
+  // helper function to handle the case where a single group is selected
+  // and all elements selected are within the group, it will respect group hierarchy in accordance to
+  // their nested grouping order
+  const handleSingleSelectedGroupCase = (
+    element: ExcalidrawElement,
+    selectedGroupId: GroupId,
+  ) => {
+    const indexOfSelectedGroupId = element.groupIds.indexOf(selectedGroupId, 0);
+    const nestedGroupCount = element.groupIds.slice(
+      0,
+      indexOfSelectedGroupId,
+    ).length;
+    return nestedGroupCount > 0
+      ? addToGroupsMap(element, element.groupIds[indexOfSelectedGroupId - 1])
+      : addToElementsMap(element);
+  };
+
+  const isAllInSameGroup = selectedElements.every((element) =>
+    isSelectedViaGroup(appState, element),
+  );
+
+  unboundElements.forEach((element) => {
+    const selectedGroupId = getSelectedGroupIdForElement(
+      element,
+      appState.selectedGroupIds,
+    );
+    if (!selectedGroupId) {
+      addToElementsMap(element);
+    } else if (selectedGroupIds.length === 1 && isAllInSameGroup) {
+      handleSingleSelectedGroupCase(element, selectedGroupId);
+    } else {
+      addToGroupsMap(element, selectedGroupId);
+    }
+  });
+  return Array.from(groups.values()).concat(Array.from(elements.values()));
+};

packages/element/src/heading.ts

@@ -1,4 +1,9 @@
-import { invariant, isDevEnv, isTestEnv } from "@excalidraw/common";
+import {
+  invariant,
+  isDevEnv,
+  isTestEnv,
+  type Bounds,
+} from "@excalidraw/common";
 
 import {
   pointFrom,
@@ -19,7 +24,7 @@ import type {
   Vector,
 } from "@excalidraw/math";
 
-import { getCenterForBounds, type Bounds } from "./bounds";
+import { getCenterForBounds } from "./bounds";
 
 import type { ExcalidrawBindableElement } from "./types";
 

packages/element/src/index.ts

@@ -1,7 +1,6 @@
 import { toIterable } from "@excalidraw/common";
 
 import { isInvisiblySmallElement } from "./sizeHelpers";
-import { isLinearElementType } from "./typeChecks";
 
 import type {
   ExcalidrawElement,
@@ -29,6 +28,9 @@ export const hashElementsVersion = (elements: ElementsMapOrArray): number => {
 
 // string hash function (using djb2). Not cryptographically secure, use only
 // for versioning and such.
+// note: hashes individual code units (not code points),
+// but for hashing purposes this is fine as it iterates through every code unit
+// (as such, no need to encode to byte string first)
 export const hashString = (s: string): number => {
   let hash: number = 5381;
   for (let i = 0; i < s.length; i++) {
@@ -52,27 +54,6 @@ export const isNonDeletedElement = <T extends ExcalidrawElement>(
   element: T,
 ): element is NonDeleted<T> => !element.isDeleted;
 
-const _clearElements = (
-  elements: readonly ExcalidrawElement[],
-): ExcalidrawElement[] =>
-  getNonDeletedElements(elements).map((element) =>
-    isLinearElementType(element.type)
-      ? { ...element, lastCommittedPoint: null }
-      : element,
-  );
-
-export const clearElementsForDatabase = (
-  elements: readonly ExcalidrawElement[],
-) => _clearElements(elements);
-
-export const clearElementsForExport = (
-  elements: readonly ExcalidrawElement[],
-) => _clearElements(elements);
-
-export const clearElementsForLocalStorage = (
-  elements: readonly ExcalidrawElement[],
-) => _clearElements(elements);
-
 export * from "./align";
 export * from "./binding";
 export * from "./bounds";
@@ -89,6 +70,7 @@ export * from "./elbowArrow";
 export * from "./elementLink";
 export * from "./embeddable";
 export * from "./flowchart";
+export * from "./arrows/focus";
 export * from "./fractionalIndex";
 export * from "./frame";
 export * from "./groups";
@@ -97,14 +79,14 @@ export * from "./image";
 export * from "./linearElementEditor";
 export * from "./mutateElement";
 export * from "./newElement";
+export * from "./positionElementsOnGrid";
 export * from "./renderElement";
 export * from "./resizeElements";
 export * from "./resizeTest";
+export * from "./schema";
 export * from "./Scene";
 export * from "./selection";
-export * from "./Shape";
+export * from "./shape";
-export * from "./ShapeCache";
-export * from "./shapes";
 export * from "./showSelectedShapeActions";
 export * from "./sizeHelpers";
 export * from "./sortElements";
@@ -112,7 +94,9 @@ export * from "./store";
 export * from "./textElement";
 export * from "./textMeasurements";
 export * from "./textWrapping";
+export * from "./transform";
 export * from "./transformHandles";
 export * from "./typeChecks";
 export * from "./utils";
 export * from "./zindex";
+export * from "./arrows/helpers";

packages/element/src/mutateElement.ts

@@ -8,9 +8,10 @@ import type { Radians } from "@excalidraw/math";
 
 import type { Mutable } from "@excalidraw/common/utility-types";
 
-import { ShapeCache } from "./ShapeCache";
+import { ShapeCache } from "./shape";
 
 import { updateElbowArrowPoints } from "./elbowArrow";
+import { ensureSchemaStateForElementType } from "./schema";
 
 import { isElbowArrow } from "./typeChecks";
 
@@ -23,7 +24,7 @@ import type {
 
 export type ElementUpdate<TElement extends ExcalidrawElement> = Omit<
   Partial<TElement>,
-  "id" | "version" | "versionNonce" | "updated"
+  "id" | "updated"
 >;
 
 /**
@@ -46,16 +47,13 @@ export const mutateElement = <TElement extends Mutable<ExcalidrawElement>>(
 
   // casting to any because can't use `in` operator
   // (see https://github.com/microsoft/TypeScript/issues/21732)
-  const { points, fixedSegments, startBinding, endBinding, fileId } =
+  const { points, fixedSegments, fileId } = updates as any;
-    updates as any;
 
   if (
     isElbowArrow(element) &&
     (Object.keys(updates).length === 0 || // normalization case
       typeof points !== "undefined" || // repositioning
-      typeof fixedSegments !== "undefined" || // segment fixing
+      typeof fixedSegments !== "undefined") // segment fixing
-      typeof startBinding !== "undefined" ||
-      typeof endBinding !== "undefined") // manual binding to element
   ) {
     updates = {
       ...updates,
@@ -137,9 +135,13 @@ export const mutateElement = <TElement extends Mutable<ExcalidrawElement>>(
     ShapeCache.delete(element);
   }
 
-  element.version++;
+  element.version = updates.version ?? element.version + 1;
-  element.versionNonce = randomInteger();
+  element.versionNonce = updates.versionNonce ?? randomInteger();
   element.updated = getUpdatedTimestamp();
+  element.schemaState = ensureSchemaStateForElementType(
+    element.schemaState,
+    element.type,
+  ) as TElement["schemaState"];
 
   return element;
 };
@@ -169,12 +171,20 @@ export const newElementWith = <TElement extends ExcalidrawElement>(
     return element;
   }
 
-  return {
+  const updatedElement = {
     ...element,
     ...updates,
+    version: updates.version ?? element.version + 1,
+    versionNonce: updates.versionNonce ?? randomInteger(),
     updated: getUpdatedTimestamp(),
-    version: element.version + 1,
+  };
-    versionNonce: randomInteger(),
+
+  return {
+    ...updatedElement,
+    schemaState: ensureSchemaStateForElementType(
+      updatedElement.schemaState,
+      updatedElement.type,
+    ),
   };
 };
 

packages/element/src/newElement.ts

@@ -20,11 +20,14 @@ import {
   getElementAbsoluteCoords,
   getResizedElementAbsoluteCoords,
 } from "./bounds";
+import { ensureSchemaStateForElementType } from "./schema";
 import { newElementWith } from "./mutateElement";
 import { getBoundTextMaxWidth } from "./textElement";
 import { normalizeText, measureText } from "./textMeasurements";
 import { wrapText } from "./textWrapping";
 
+import { isLineElement } from "./typeChecks";
+
 import type {
   ExcalidrawElement,
   ExcalidrawImageElement,
@@ -45,6 +48,7 @@ import type {
   ElementsMap,
   ExcalidrawArrowElement,
   ExcalidrawElbowArrowElement,
+  ExcalidrawLineElement,
 } from "./types";
 
 export type ElementConstructorOpts = MarkOptional<
@@ -67,6 +71,7 @@ export type ElementConstructorOpts = MarkOptional<
   | "roughness"
   | "strokeWidth"
   | "roundness"
+  | "schemaState"
   | "locked"
   | "opacity"
   | "customData"
@@ -141,6 +146,7 @@ const _newElementBase = <T extends ExcalidrawElement>(
     roundness,
     seed: rest.seed ?? randomInteger(),
     version: rest.version || 1,
+    schemaState: ensureSchemaStateForElementType(rest.schemaState, type),
     versionNonce: rest.versionNonce ?? 0,
     isDeleted: false as false,
     boundElements,
@@ -449,7 +455,6 @@ export const newFreeDrawElement = (
     points: opts.points || [],
     pressures: opts.pressures || [],
     simulatePressure: opts.simulatePressure,
-    lastCommittedPoint: null,
   };
 };
 
@@ -457,17 +462,29 @@ export const newLinearElement = (
   opts: {
     type: ExcalidrawLinearElement["type"];
     points?: ExcalidrawLinearElement["points"];
+    polygon?: ExcalidrawLineElement["polygon"];
   } & ElementConstructorOpts,
 ): NonDeleted<ExcalidrawLinearElement> => {
-  return {
+  const element = {
     ..._newElementBase<ExcalidrawLinearElement>(opts.type, opts),
     points: opts.points || [],
-    lastCommittedPoint: null,
+
     startBinding: null,
     endBinding: null,
     startArrowhead: null,
     endArrowhead: null,
   };
+
+  if (isLineElement(element)) {
+    const lineElement: NonDeleted<ExcalidrawLineElement> = {
+      ...element,
+      polygon: opts.polygon ?? false,
+    };
+
+    return lineElement;
+  }
+
+  return element;
 };
 
 export const newArrowElement = <T extends boolean>(
@@ -486,7 +503,6 @@ export const newArrowElement = <T extends boolean>(
     return {
       ..._newElementBase<ExcalidrawElbowArrowElement>(opts.type, opts),
       points: opts.points || [],
-      lastCommittedPoint: null,
       startBinding: null,
       endBinding: null,
       startArrowhead: opts.startArrowhead || null,
@@ -501,7 +517,6 @@ export const newArrowElement = <T extends boolean>(
   return {
     ..._newElementBase<ExcalidrawArrowElement>(opts.type, opts),
     points: opts.points || [],
-    lastCommittedPoint: null,
     startBinding: null,
     endBinding: null,
     startArrowhead: opts.startArrowhead || null,

packages/element/src/positionElementsOnGrid.ts

@@ -0,0 +1,112 @@
+import { getCommonBounds } from "./bounds";
+import { type ElementUpdate, newElementWith } from "./mutateElement";
+
+import type { ExcalidrawElement } from "./types";
+
+// TODO rewrite (mostly vibe-coded)
+export const positionElementsOnGrid = <TElement extends ExcalidrawElement>(
+  elements: TElement[] | TElement[][],
+  centerX: number,
+  centerY: number,
+  padding = 50,
+): TElement[] => {
+  // Ensure there are elements to position
+  if (!elements || elements.length === 0) {
+    return [];
+  }
+
+  const res: TElement[] = [];
+  // Normalize input to work with atomic units (groups of elements)
+  // If elements is a flat array, treat each element as its own atomic unit
+  const atomicUnits: TElement[][] = Array.isArray(elements[0])
+    ? (elements as TElement[][])
+    : (elements as TElement[]).map((element) => [element]);
+
+  // Determine the number of columns for atomic units
+  // A common approach for a "grid-like" layout without specific column constraints
+  // is to aim for a roughly square arrangement.
+  const numUnits = atomicUnits.length;
+  const numColumns = Math.max(1, Math.ceil(Math.sqrt(numUnits)));
+
+  // Group atomic units into rows based on the calculated number of columns
+  const rows: TElement[][][] = [];
+  for (let i = 0; i < numUnits; i += numColumns) {
+    rows.push(atomicUnits.slice(i, i + numColumns));
+  }
+
+  // Calculate properties for each row (total width, max height)
+  // and the total actual height of all row content.
+  let totalGridActualHeight = 0; // Sum of max heights of rows, without inter-row padding
+  const rowProperties = rows.map((rowUnits) => {
+    let rowWidth = 0;
+    let maxUnitHeightInRow = 0;
+
+    const unitBounds = rowUnits.map((unit) => {
+      const [minX, minY, maxX, maxY] = getCommonBounds(unit);
+      return {
+        elements: unit,
+        bounds: [minX, minY, maxX, maxY] as const,
+        width: maxX - minX,
+        height: maxY - minY,
+      };
+    });
+
+    unitBounds.forEach((unitBound, index) => {
+      rowWidth += unitBound.width;
+      // Add padding between units in the same row, but not after the last one
+      if (index < unitBounds.length - 1) {
+        rowWidth += padding;
+      }
+      if (unitBound.height > maxUnitHeightInRow) {
+        maxUnitHeightInRow = unitBound.height;
+      }
+    });
+
+    totalGridActualHeight += maxUnitHeightInRow;
+    return {
+      unitBounds,
+      width: rowWidth,
+      maxHeight: maxUnitHeightInRow,
+    };
+  });
+
+  // Calculate the total height of the grid including padding between rows
+  const totalGridHeightWithPadding =
+    totalGridActualHeight + Math.max(0, rows.length - 1) * padding;
+
+  // Calculate the starting Y position to center the entire grid vertically around centerY
+  let currentY = centerY - totalGridHeightWithPadding / 2;
+
+  // Position atomic units row by row
+  rowProperties.forEach((rowProp) => {
+    const { unitBounds, width: rowWidth, maxHeight: rowMaxHeight } = rowProp;
+
+    // Calculate the starting X for the current row to center it horizontally around centerX
+    let currentX = centerX - rowWidth / 2;
+
+    unitBounds.forEach((unitBound) => {
+      // Calculate the offset needed to position this atomic unit
+      const [originalMinX, originalMinY] = unitBound.bounds;
+      const offsetX = currentX - originalMinX;
+      const offsetY = currentY - originalMinY;
+
+      // Apply the offset to all elements in this atomic unit
+      unitBound.elements.forEach((element) => {
+        res.push(
+          newElementWith(element, {
+            x: element.x + offsetX,
+            y: element.y + offsetY,
+          } as ElementUpdate<TElement>),
+        );
+      });
+
+      // Move X for the next unit in the row
+      currentX += unitBound.width + padding;
+    });
+
+    // Move Y to the starting position for the next row
+    // This accounts for the tallest unit in the current row and the inter-row padding
+    currentY += rowMaxHeight + padding;
+  });
+  return res;
+};

packages/element/src/renderElement.ts

@@ -1,19 +1,30 @@
 import rough from "roughjs/bin/rough";
-import { getStroke } from "perfect-freehand";
 
-import { isRightAngleRads } from "@excalidraw/math";
+import {
+  type GlobalPoint,
+  isRightAngleRads,
+  lineSegment,
+  pointFrom,
+  pointRotateRads,
+  type Radians,
+} from "@excalidraw/math";
 
 import {
   BOUND_TEXT_PADDING,
   DEFAULT_REDUCED_GLOBAL_ALPHA,
   ELEMENT_READY_TO_ERASE_OPACITY,
   FRAME_STYLE,
+  DARK_THEME_FILTER,
   MIME_TYPES,
   THEME,
   distance,
   getFontString,
   isRTL,
   getVerticalOffset,
+  invariant,
+  isTransparent,
+  applyDarkModeFilter,
+  isSafari,
 } from "@excalidraw/common";
 
 import type {
@@ -32,7 +43,7 @@ import type {
   InteractiveCanvasRenderConfig,
 } from "@excalidraw/excalidraw/scene/types";
 
-import { getElementAbsoluteCoords } from "./bounds";
+import { getElementAbsoluteCoords, getElementBounds } from "./bounds";
 import { getUncroppedImageElement } from "./cropElement";
 import { LinearElementEditor } from "./linearElementEditor";
 import {
@@ -54,9 +65,9 @@ import {
   isImageElement,
 } from "./typeChecks";
 import { getContainingFrame } from "./frame";
-import { getCornerRadius } from "./shapes";
+import { getCornerRadius } from "./utils";
 
-import { ShapeCache } from "./ShapeCache";
+import { ShapeCache } from "./shape";
 
 import type {
   ExcalidrawElement,
@@ -68,18 +79,11 @@ import type {
   ExcalidrawFrameLikeElement,
   NonDeletedSceneElementsMap,
   ElementsMap,
+  ExcalidrawFrameElement,
 } from "./types";
 
-import type { StrokeOptions } from "perfect-freehand";
 import type { RoughCanvas } from "roughjs/bin/canvas";
 
-// using a stronger invert (100% vs our regular 93%) and saturate
-// as a temp hack to make images in dark theme look closer to original
-// color scheme (it's still not quite there and the colors look slightly
-// desatured, alas...)
-export const IMAGE_INVERT_FILTER =
-  "invert(100%) hue-rotate(180deg) saturate(1.25)";
-
 const isPendingImageElement = (
   element: ExcalidrawElement,
   renderConfig: StaticCanvasRenderConfig,
@@ -87,25 +91,17 @@ const isPendingImageElement = (
   isInitializedImageElement(element) &&
   !renderConfig.imageCache.has(element.fileId);
 
-const shouldResetImageFilter = (
-  element: ExcalidrawElement,
-  renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
-) => {
-  return (
-    appState.theme === THEME.DARK &&
-    isInitializedImageElement(element) &&
-    !isPendingImageElement(element, renderConfig) &&
-    renderConfig.imageCache.get(element.fileId)?.mimeType !== MIME_TYPES.svg
-  );
-};
-
 const getCanvasPadding = (element: ExcalidrawElement) => {
   switch (element.type) {
     case "freedraw":
       return element.strokeWidth * 12;
     case "text":
       return element.fontSize / 2;
+    case "arrow":
+      if (element.endArrowhead || element.endArrowhead) {
+        return 40;
+      }
+      return 20;
     default:
       return 20;
   }
@@ -212,7 +208,7 @@ const generateElementCanvas = (
   elementsMap: NonDeletedSceneElementsMap,
   zoom: Zoom,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ): ExcalidrawElementWithCanvas | null => {
   const canvas = document.createElement("canvas");
   const context = canvas.getContext("2d")!;
@@ -259,12 +255,7 @@ const generateElementCanvas = (
 
   const rc = rough.canvas(canvas);
 
-  // in dark theme, revert the image color filter
+  drawElementOnCanvas(element, rc, context, renderConfig);
-  if (shouldResetImageFilter(element, renderConfig, appState)) {
-    context.filter = IMAGE_INVERT_FILTER;
-  }
-
-  drawElementOnCanvas(element, rc, context, renderConfig, appState);
 
   context.restore();
 
@@ -372,8 +363,9 @@ IMAGE_ERROR_PLACEHOLDER_IMG.src = `data:${MIME_TYPES.svg},${encodeURIComponent(
 const drawImagePlaceholder = (
   element: ExcalidrawImageElement,
   context: CanvasRenderingContext2D,
+  theme: StaticCanvasRenderConfig["theme"],
 ) => {
-  context.fillStyle = "#E7E7E7";
+  context.fillStyle = theme === THEME.DARK ? "#2E2E2E" : "#E7E7E7";
   context.fillRect(0, 0, element.width, element.height);
 
   const imageMinWidthOrHeight = Math.min(element.width, element.height);
@@ -399,7 +391,6 @@ const drawElementOnCanvas = (
   rc: RoughCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
 ) => {
   switch (element.type) {
     case "rectangle":
@@ -409,7 +400,8 @@ const drawElementOnCanvas = (
     case "ellipse": {
       context.lineJoin = "round";
       context.lineCap = "round";
-      rc.draw(ShapeCache.get(element)!);
+
+      rc.draw(ShapeCache.generateElementShape(element, renderConfig));
       break;
     }
     case "arrow":
@@ -417,33 +409,44 @@ const drawElementOnCanvas = (
       context.lineJoin = "round";
       context.lineCap = "round";
 
-      ShapeCache.get(element)!.forEach((shape) => {
+      ShapeCache.generateElementShape(element, renderConfig).forEach(
-        rc.draw(shape);
+        (shape) => {
-      });
+          rc.draw(shape);
+        },
+      );
       break;
     }
     case "freedraw": {
       // Draw directly to canvas
       context.save();
-      context.fillStyle = element.strokeColor;
 
-      const path = getFreeDrawPath2D(element) as Path2D;
+      const shapes = ShapeCache.generateElementShape(element, renderConfig);
-      const fillShape = ShapeCache.get(element);
 
-      if (fillShape) {
+      for (const shape of shapes) {
-        rc.draw(fillShape);
+        if (typeof shape === "string") {
+          context.fillStyle =
+            renderConfig.theme === THEME.DARK
+              ? applyDarkModeFilter(element.strokeColor)
+              : element.strokeColor;
+          context.fill(new Path2D(shape));
+        } else {
+          rc.draw(shape);
+        }
       }
 
-      context.fillStyle = element.strokeColor;
-      context.fill(path);
-
       context.restore();
       break;
     }
     case "image": {
+      context.save();
+      const cacheEntry =
+        element.fileId !== null
+          ? renderConfig.imageCache.get(element.fileId)
+          : null;
       const img = isInitializedImageElement(element)
-        ? renderConfig.imageCache.get(element.fileId)?.image
+        ? cacheEntry?.image
         : undefined;
+
       if (img != null && !(img instanceof Promise)) {
         if (element.roundness && context.roundRect) {
           context.beginPath();
@@ -466,20 +469,80 @@ const drawElementOnCanvas = (
               height: img.naturalHeight,
             };
 
-        context.drawImage(
+        const shouldInvertImage =
-          img,
+          renderConfig.theme === THEME.DARK &&
-          x,
+          cacheEntry?.mimeType === MIME_TYPES.svg;
-          y,
+
-          width,
+        if (shouldInvertImage && isSafari) {
-          height,
+          const devicePixelRatio = window.devicePixelRatio || 1;
-          0 /* hardcoded for the selection box*/,
+          const tempCanvas = document.createElement("canvas");
-          0,
+          tempCanvas.width = element.width * devicePixelRatio;
-          element.width,
+          tempCanvas.height = element.height * devicePixelRatio;
-          element.height,
+          const tempContext = tempCanvas.getContext("2d");
-        );
+
+          if (tempContext) {
+            tempContext.scale(devicePixelRatio, devicePixelRatio);
+            tempContext.drawImage(
+              img,
+              x,
+              y,
+              width,
+              height,
+              0,
+              0,
+              element.width,
+              element.height,
+            );
+
+            const imageData = tempContext.getImageData(
+              0,
+              0,
+              tempCanvas.width,
+              tempCanvas.height,
+            );
+
+            const data = imageData.data;
+
+            for (let i = 0; i < data.length; i += 4) {
+              data[i] = 255 - data[i];
+              data[i + 1] = 255 - data[i + 1];
+              data[i + 2] = 255 - data[i + 2];
+            }
+
+            tempContext.putImageData(imageData, 0, 0);
+            context.drawImage(
+              tempCanvas,
+              0,
+              0,
+              tempCanvas.width,
+              tempCanvas.height,
+              0,
+              0,
+              element.width,
+              element.height,
+            );
+          }
+        } else {
+          if (shouldInvertImage) {
+            context.filter = DARK_THEME_FILTER;
+          }
+
+          context.drawImage(
+            img,
+            x,
+            y,
+            width,
+            height,
+            0 /* hardcoded for the selection box*/,
+            0,
+            element.width,
+            element.height,
+          );
+        }
       } else {
-        drawImagePlaceholder(element, context);
+        drawImagePlaceholder(element, context, renderConfig.theme);
       }
+      context.restore();
       break;
     }
     default: {
@@ -494,7 +557,10 @@ const drawElementOnCanvas = (
         context.canvas.setAttribute("dir", rtl ? "rtl" : "ltr");
         context.save();
         context.font = getFontString(element);
-        context.fillStyle = element.strokeColor;
+        context.fillStyle =
+          renderConfig.theme === THEME.DARK
+            ? applyDarkModeFilter(element.strokeColor)
+            : element.strokeColor;
         context.textAlign = element.textAlign as CanvasTextAlign;
 
         // Canvas does not support multiline text by default
@@ -545,7 +611,7 @@ const generateElementWithCanvas = (
   element: NonDeletedExcalidrawElement,
   elementsMap: NonDeletedSceneElementsMap,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ) => {
   const zoom: Zoom = renderConfig
     ? appState.zoom
@@ -602,7 +668,7 @@ const drawElementFromCanvas = (
   elementWithCanvas: ExcalidrawElementWithCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
   allElementsMap: NonDeletedSceneElementsMap,
 ) => {
   const element = elementWithCanvas.element;
@@ -713,6 +779,45 @@ export const renderSelectionElement = (
   context.restore();
 };
 
+export const renderFrameBackground = (
+  frame: ExcalidrawFrameElement,
+  context: CanvasRenderingContext2D,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
+  opts?: {
+    roundCorners?: boolean;
+  },
+) => {
+  if (isTransparent(frame.backgroundColor)) {
+    return;
+  }
+
+  context.save();
+  context.translate(frame.x + appState.scrollX, frame.y + appState.scrollY);
+  context.fillStyle =
+    appState.theme === THEME.DARK
+      ? applyDarkModeFilter(frame.backgroundColor)
+      : frame.backgroundColor;
+
+  const shouldRoundCorners = opts?.roundCorners ?? true;
+
+  if (shouldRoundCorners && FRAME_STYLE.radius && context.roundRect) {
+    context.beginPath();
+    context.roundRect(
+      0,
+      0,
+      frame.width,
+      frame.height,
+      FRAME_STYLE.radius / appState.zoom.value,
+    );
+    context.fill();
+    context.closePath();
+  } else {
+    context.fillRect(0, 0, frame.width, frame.height);
+  }
+
+  context.restore();
+};
+
 export const renderElement = (
   element: NonDeletedExcalidrawElement,
   elementsMap: RenderableElementsMap,
@@ -720,7 +825,7 @@ export const renderElement = (
   rc: RoughCanvas,
   context: CanvasRenderingContext2D,
   renderConfig: StaticCanvasRenderConfig,
-  appState: StaticCanvasAppState,
+  appState: StaticCanvasAppState | InteractiveCanvasAppState,
 ) => {
   const reduceAlphaForSelection =
     appState.openDialog?.name === "elementLinkSelector" &&
@@ -744,15 +849,19 @@ export const renderElement = (
           element.x + appState.scrollX,
           element.y + appState.scrollY,
         );
-        context.fillStyle = "rgba(0, 0, 200, 0.04)";
 
         context.lineWidth = FRAME_STYLE.strokeWidth / appState.zoom.value;
-        context.strokeStyle = FRAME_STYLE.strokeColor;
+        context.strokeStyle =
+          appState.theme === THEME.DARK
+            ? applyDarkModeFilter(FRAME_STYLE.strokeColor)
+            : FRAME_STYLE.strokeColor;
 
         // TODO change later to only affect AI frames
         if (isMagicFrameElement(element)) {
           context.strokeStyle =
-            appState.theme === THEME.LIGHT ? "#7affd7" : "#1d8264";
+            appState.theme === THEME.LIGHT
+              ? "#7affd7"
+              : applyDarkModeFilter("#1d8264");
         }
 
         if (FRAME_STYLE.radius && context.roundRect) {
@@ -775,11 +884,6 @@ export const renderElement = (
       break;
     }
     case "freedraw": {
-      // TODO investigate if we can do this in situ. Right now we need to call
-      // beforehand because math helpers (such as getElementAbsoluteCoords)
-      // rely on existing shapes
-      ShapeCache.generateElementShape(element, null);
-
       if (renderConfig.isExporting) {
         const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
         const cx = (x1 + x2) / 2 + appState.scrollX;
@@ -790,7 +894,7 @@ export const renderElement = (
         context.translate(cx, cy);
         context.rotate(element.angle);
         context.translate(-shiftX, -shiftY);
-        drawElementOnCanvas(element, rc, context, renderConfig, appState);
+        drawElementOnCanvas(element, rc, context, renderConfig);
         context.restore();
       } else {
         const elementWithCanvas = generateElementWithCanvas(
@@ -823,10 +927,6 @@ export const renderElement = (
     case "text":
     case "iframe":
     case "embeddable": {
-      // TODO investigate if we can do this in situ. Right now we need to call
-      // beforehand because math helpers (such as getElementAbsoluteCoords)
-      // rely on existing shapes
-      ShapeCache.generateElementShape(element, renderConfig);
       if (renderConfig.isExporting) {
         const [x1, y1, x2, y2] = getElementAbsoluteCoords(element, elementsMap);
         const cx = (x1 + x2) / 2 + appState.scrollX;
@@ -849,9 +949,6 @@ export const renderElement = (
         context.save();
         context.translate(cx, cy);
 
-        if (shouldResetImageFilter(element, renderConfig, appState)) {
-          context.filter = "none";
-        }
         const boundTextElement = getBoundTextElement(element, elementsMap);
 
         if (isArrowElement(element) && boundTextElement) {
@@ -883,13 +980,7 @@ export const renderElement = (
 
           tempCanvasContext.translate(-shiftX, -shiftY);
 
-          drawElementOnCanvas(
+          drawElementOnCanvas(element, tempRc, tempCanvasContext, renderConfig);
-            element,
-            tempRc,
-            tempCanvasContext,
-            renderConfig,
-            appState,
-          );
 
           tempCanvasContext.translate(shiftX, shiftY);
 
@@ -928,7 +1019,7 @@ export const renderElement = (
           }
 
           context.translate(-shiftX, -shiftY);
-          drawElementOnCanvas(element, rc, context, renderConfig, appState);
+          drawElementOnCanvas(element, rc, context, renderConfig);
         }
 
         context.restore();
@@ -1020,69 +1111,58 @@ export const renderElement = (
   context.globalAlpha = 1;
 };
 
-export const pathsCache = new WeakMap<ExcalidrawFreeDrawElement, Path2D>([]);
+export function getFreedrawOutlineAsSegments(
+  element: ExcalidrawFreeDrawElement,
+  points: [number, number][],
+  elementsMap: ElementsMap,
+) {
+  const bounds = getElementBounds(
+    {
+      ...element,
+      angle: 0 as Radians,
+    },
+    elementsMap,
+  );
+  const center = pointFrom<GlobalPoint>(
+    (bounds[0] + bounds[2]) / 2,
+    (bounds[1] + bounds[3]) / 2,
+  );
 
-export function generateFreeDrawShape(element: ExcalidrawFreeDrawElement) {
+  invariant(points.length >= 2, "Freepath outline must have at least 2 points");
-  const svgPathData = getFreeDrawSvgPath(element);
+
-  const path = new Path2D(svgPathData);
+  return points.slice(2).reduce(
-  pathsCache.set(element, path);
+    (acc, curr) => {
-  return path;
+      acc.push(
-}
+        lineSegment<GlobalPoint>(
-
+          acc[acc.length - 1][1],
-export function getFreeDrawPath2D(element: ExcalidrawFreeDrawElement) {
+          pointRotateRads(
-  return pathsCache.get(element);
+            pointFrom<GlobalPoint>(curr[0] + element.x, curr[1] + element.y),
-}
+            center,
-
+            element.angle,
-export function getFreeDrawSvgPath(element: ExcalidrawFreeDrawElement) {
+          ),
-  // If input points are empty (should they ever be?) return a dot
+        ),
-  const inputPoints = element.simulatePressure
+      );
-    ? element.points
+      return acc;
-    : element.points.length
+    },
-    ? element.points.map(([x, y], i) => [x, y, element.pressures[i]])
+    [
-    : [[0, 0, 0.5]];
+      lineSegment<GlobalPoint>(
-
+        pointRotateRads(
-  // Consider changing the options for simulated pressure vs real pressure
+          pointFrom<GlobalPoint>(
-  const options: StrokeOptions = {
+            points[0][0] + element.x,
-    simulatePressure: element.simulatePressure,
+            points[0][1] + element.y,
-    size: element.strokeWidth * 4.25,
+          ),
-    thinning: 0.6,
+          center,
-    smoothing: 0.5,
+          element.angle,
-    streamline: 0.5,
+        ),
-    easing: (t) => Math.sin((t * Math.PI) / 2), // https://easings.net/#easeOutSine
+        pointRotateRads(
-    last: !!element.lastCommittedPoint, // LastCommittedPoint is added on pointerup
+          pointFrom<GlobalPoint>(
-  };
+            points[1][0] + element.x,
-
+            points[1][1] + element.y,
-  return getSvgPathFromStroke(getStroke(inputPoints as number[][], options));
+          ),
-}
+          center,
-
+          element.angle,
-function med(A: number[], B: number[]) {
+        ),
-  return [(A[0] + B[0]) / 2, (A[1] + B[1]) / 2];
+      ),
-}
+    ],
-
+  );
-// Trim SVG path data so number are each two decimal points. This
-// improves SVG exports, and prevents rendering errors on points
-// with long decimals.
-const TO_FIXED_PRECISION = /(\s?[A-Z]?,?-?[0-9]*\.[0-9]{0,2})(([0-9]|e|-)*)/g;
-
-function getSvgPathFromStroke(points: number[][]): string {
-  if (!points.length) {
-    return "";
-  }
-
-  const max = points.length - 1;
-
-  return points
-    .reduce(
-      (acc, point, i, arr) => {
-        if (i === max) {
-          acc.push(point, med(point, arr[0]), "L", arr[0], "Z");
-        } else {
-          acc.push(point, med(point, arr[i + 1]));
-        }
-        return acc;
-      },
-      ["M", points[0], "Q"],
-    )
-    .join(" ")
-    .replace(TO_FIXED_PRECISION, "$1");
 }