[fix] missing border on group shape when unlocked (#2075)

This PR fixes a bug where the indicator on a locked group (or any
shape!) would not appear when the shape was unlocked. This happens
because the `memo` equality checker filtered out changes to the shape's
locked property if they did not effect any other properties.

![Kapture 2023-10-13 at 14 44
31](https://github.com/tldraw/tldraw/assets/23072548/c40442e0-8d18-4ed0-863c-c2b73da81f28)

### Change Type

- [x] `patch` — Bug fix

### Release Notes

- Fix case where indicator was not shown when unlocking groups

packages/editor/src/lib/components/ShapeIndicator.tsx

@@ -11,7 +11,11 @@ import { OptionalErrorBoundary } from './ErrorBoundary'
 class ShapeWithPropsEquality {
 	constructor(public shape: TLShape | undefined) {}
 	equals(other: ShapeWithPropsEquality) {
-		return this.shape?.props === other?.shape?.props && this.shape?.meta === other?.shape?.meta
+		return (
+			this.shape?.isLocked === other?.shape?.isLocked &&
+			this.shape?.props === other?.shape?.props &&
+			this.shape?.meta === other?.shape?.meta
+		)
 	}
 }
 

packages/editor/src/lib/editor/shapes/group/DashedOutlineBox.tsx

@@ -1,15 +1,13 @@
+import { useValue } from '@tldraw/state'
+import { useEditor } from '../../../hooks/useEditor'
 import { Box2d } from '../../../primitives/Box2d'
 import { getPerfectDashProps } from '../shared/getPerfectDashProps'
 
-export function DashedOutlineBox({
-	bounds,
-	zoomLevel,
-	className,
-}: {
-	bounds: Box2d
-	zoomLevel: number
-	className: string
-}) {
+export function DashedOutlineBox({ bounds, className }: { bounds: Box2d; className: string }) {
+	const editor = useEditor()
+
+	const zoomLevel = useValue('zoom level', () => editor.zoomLevel, [editor])
+
 	return (
 		<g className={className} pointerEvents="none" strokeLinecap="round" strokeLinejoin="round">
 			{bounds.sides.map((side, i) => {

packages/editor/src/lib/editor/shapes/group/GroupShapeUtil.tsx

@@ -49,15 +49,9 @@ export class GroupShapeUtil extends ShapeUtil<TLGroupShape> {
 	}
 
 	component(shape: TLGroupShape) {
-		// Not a class component, but eslint can't tell that :(
-		const {
-			erasingShapeIds,
-			currentPageState: { hintingShapeIds, focusedGroupId },
-			zoomLevel,
-		} = this.editor
-
-		const isErasing = erasingShapeIds.includes(shape.id)
+		const isErasing = this.editor.erasingShapeIds.includes(shape.id)
 
+		const { hintingShapeIds } = this.editor.currentPageState
 		const isHintingOtherGroup =
 			hintingShapeIds.length > 0 &&
 			hintingShapeIds.some(
@@ -66,12 +60,13 @@ export class GroupShapeUtil extends ShapeUtil<TLGroupShape> {
 					this.editor.isShapeOfType<TLGroupShape>(this.editor.getShape(id)!, 'group')
 			)
 
+		const isFocused = this.editor.currentPageState.focusedGroupId !== shape.id
+
 		if (
-			// always show the outline while we're erasing the group
-			!isErasing &&
+			!isErasing && // always show the outline while we're erasing the group
 			// show the outline while the group is focused unless something outside of the group is being hinted
 			// this happens dropping shapes from a group onto some outside group
-			(shape.id !== focusedGroupId || isHintingOtherGroup)
+			(isFocused || isHintingOtherGroup)
 		) {
 			return null
 		}
@@ -80,20 +75,15 @@ export class GroupShapeUtil extends ShapeUtil<TLGroupShape> {
 
 		return (
 			<SVGContainer id={shape.id}>
-				<DashedOutlineBox className="tl-group" bounds={bounds} zoomLevel={zoomLevel} />
+				<DashedOutlineBox className="tl-group" bounds={bounds} />
 			</SVGContainer>
 		)
 	}
 
 	indicator(shape: TLGroupShape) {
 		// Not a class component, but eslint can't tell that :(
-		const {
-			camera: { z: zoomLevel },
-		} = this.editor
-
 		const bounds = this.editor.getShapeGeometry(shape).bounds
-
-		return <DashedOutlineBox className="" bounds={bounds} zoomLevel={zoomLevel} />
+		return <DashedOutlineBox className="" bounds={bounds} />
 	}
 
 	override onChildrenChange: TLOnChildrenChangeHandler<TLGroupShape> = (group) => {