[firefox] Fix the pointer getting stuck down when you press the control key (#1390)

This PR fixes a bug in firefox where the pointer can get stuck down
while pressing the control key.

It achieves this by taking a previous fix (specifically for
`useShapeEvents`), and it applies the fix at a deeper level (within
`app.dispatch`).

## Before
![2023-05-16 at 15 33 02 - Crimson
Coyote](https://github.com/tldraw/tldraw/assets/15892272/7d4b5bb1-a2e5-400c-9935-fddcc9645e52)

## After
![2023-05-16 at 15 34 03 - Purple
Panda](https://github.com/tldraw/tldraw/assets/15892272/34a598b2-bf6d-4847-8ce9-a3d52c418174)

### Change Type

- [x] `patch` — Bug Fix

### Test Plan

1. Use firefox.
2. On the canvas... pointer down (to start a selection box).
3. Control key down.
4. Pointer up.
5. Make sure that that the selection box is gone.

^ Repeat the above for:
Pointer down on a shape.
Pointer down on a handle.

### Release Notes

- [Firefox] Fixed a bug where the pointer could get stuck down when the
control key is held down.

packages/editor/api-report.md

@@ -156,6 +156,8 @@ export class App extends EventEmitter<TLEventMap> {
     set canMoveCamera(canMove: boolean);
     get canRedo(): boolean;
     get canUndo(): boolean;
+    // @internal (undocumented)
+    capturedPointerId: null | number;
     centerOnPoint(x: number, y: number, opts?: AnimationOptions): this;
     // @internal
     protected _clickManager: ClickManager;

packages/editor/src/lib/app/App.ts

@@ -3527,6 +3527,9 @@ export class App extends EventEmitter<TLEventMap> {
 	/** @internal */
 	private _selectedIdsAtPointerDown: TLShapeId[] = []
 
+	/** @internal */
+	capturedPointerId: number | null = null
+
 	/**
 	 * Dispatch an event to the app.
 	 *
@@ -3742,6 +3745,12 @@ export class App extends EventEmitter<TLEventMap> {
 						case 'pointer_down': {
 							this._selectedIdsAtPointerDown = this.selectedIds.slice()
 
+							// Firefox bug fix...
+							// If it's a left-mouse-click, we store the pointer id for later user
+							if (info.button === 0) {
+								this.capturedPointerId = info.pointerId
+							}
+
 							// Add the button from the buttons set
 							inputs.buttons.add(info.button)
 
@@ -3833,6 +3842,14 @@ export class App extends EventEmitter<TLEventMap> {
 								return
 							}
 
+							// Firefox bug fix...
+							// If it's the same pointer that we stored earlier...
+							// ... then it's probably still a left-mouse-click!
+							if (this.capturedPointerId === info.pointerId) {
+								this.capturedPointerId = null
+								info.button = 0
+							}
+
 							if (inputs.isPanning) {
 								if (info.button === 1) {
 									if (!this.inputs.keys.has(' ')) {

packages/editor/src/lib/hooks/useCanvasEvents.ts

@@ -43,7 +43,7 @@ export function useCanvasEvents() {
 
 			function onPointerUp(e: React.PointerEvent) {
 				if ((e as any).isKilled) return
-				if (e.button !== 0 && e.button !== 1 && e.button !== 5) return
+				if (e.button !== 0 && e.button !== 1 && e.button !== 2 && e.button !== 5) return
 				lastX = e.clientX
 				lastY = e.clientY
 

packages/editor/src/lib/hooks/useShapeEvents.ts

@@ -6,38 +6,18 @@ import { preventDefault, releasePointerCapture, setPointerCapture } from '../uti
 import { getPointerInfo } from '../utils/svg'
 import { useApp } from './useApp'
 
-const pointerEventHandler = (
+const pointerEventHandler = (app: App, shapeId: TLShapeId, name: TLPointerEventName) => {
-	app: App,
-	shapeId: TLShapeId,
-	name: TLPointerEventName,
-	capturedPointerIdLookup: Set<string>
-) => {
 	return (e: React.PointerEvent) => {
 		if (name !== 'pointer_move' && app.pageState.editingId === shapeId) (e as any).isKilled = true
 		if ((e as any).isKilled) return
 
-		let pointerInfo = getPointerInfo(e, app.getContainer())
-
 		switch (name) {
 			case 'pointer_down': {
 				if (e.button !== 0 && e.button !== 1 && e.button !== 2) return
 				setPointerCapture(e.currentTarget, e)
-				if (e.button === 0) {
-					capturedPointerIdLookup.add(`pointer_down:${e.pointerId}:0`)
-				}
 				break
 			}
 			case 'pointer_up': {
-				const key = `pointer_down:${e.pointerId}:0`
-				// Due to an issue with how firefox handles click events, see <https://linear.app/tldraw/issue/TLD-1056/firefox-pointer-events-do-not-fire-when-control-clicking>
-				if (capturedPointerIdLookup.has(key)) {
-					// Because we've tracked the pointer event as a pointer_down with button 0, we can assume this is the invalid right click FF issue.
-					pointerInfo = {
-						...pointerInfo,
-						button: 0,
-					}
-					capturedPointerIdLookup.delete(key)
-				}
 				releasePointerCapture(e.currentTarget, e)
 				break
 			}
@@ -55,7 +35,7 @@ const pointerEventHandler = (
 			target: 'shape',
 			shape,
 			name,
-			...pointerInfo,
+			...getPointerInfo(e, app.getContainer()),
 		})
 	}
 }
@@ -64,7 +44,6 @@ export function useShapeEvents(id: TLShapeId) {
 	const app = useApp()
 
 	return React.useMemo(() => {
-		const capturedPointerIdLookup = new Set<string>()
 		function onTouchStart(e: React.TouchEvent) {
 			;(e as any).isKilled = true
 			preventDefault(e)
@@ -75,7 +54,7 @@ export function useShapeEvents(id: TLShapeId) {
 			preventDefault(e)
 		}
 
-		const handlePointerMove = pointerEventHandler(app, id, 'pointer_move', capturedPointerIdLookup)
+		const handlePointerMove = pointerEventHandler(app, id, 'pointer_move')
 
 		// Track the last screen point
 		let lastX: number, lastY: number
@@ -90,10 +69,10 @@ export function useShapeEvents(id: TLShapeId) {
 		}
 
 		return {
-			onPointerDown: pointerEventHandler(app, id, 'pointer_down', capturedPointerIdLookup),
+			onPointerDown: pointerEventHandler(app, id, 'pointer_down'),
-			onPointerUp: pointerEventHandler(app, id, 'pointer_up', capturedPointerIdLookup),
+			onPointerUp: pointerEventHandler(app, id, 'pointer_up'),
-			onPointerEnter: pointerEventHandler(app, id, 'pointer_enter', capturedPointerIdLookup),
+			onPointerEnter: pointerEventHandler(app, id, 'pointer_enter'),
-			onPointerLeave: pointerEventHandler(app, id, 'pointer_leave', capturedPointerIdLookup),
+			onPointerLeave: pointerEventHandler(app, id, 'pointer_leave'),
 			onPointerMove,
 			onTouchStart,
 			onTouchEnd,