Tldraw/packages/editor/src/lib/components/default-components/DefaultShapeIndicator.tsx

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2.4 KiB
TypeScript

import { useQuickReactor, useStateTracking, useValue } from '@tldraw/state'
import { TLShape, TLShapeId } from '@tldraw/tlschema'
import classNames from 'classnames'
import { memo, useLayoutEffect, useRef } from 'react'
import type { Editor } from '../../editor/Editor'
import { ShapeUtil } from '../../editor/shapes/ShapeUtil'
import { useEditor } from '../../hooks/useEditor'
import { useEditorComponents } from '../../hooks/useEditorComponents'
import { OptionalErrorBoundary } from '../ErrorBoundary'
// need an extra layer of indirection here to allow hooks to be used inside the indicator render
const EvenInnererIndicator = ({ shape, util }: { shape: TLShape; util: ShapeUtil<any> }) => {
return useStateTracking('Indicator: ' + shape.type, () => util.indicator(shape))
}
const InnerIndicator = ({ editor, id }: { editor: Editor; id: TLShapeId }) => {
const shape = useValue('shape for indicator', () => editor.store.get(id), [editor, id])
const { ShapeIndicatorErrorFallback } = useEditorComponents()
if (!shape || shape.isLocked) return null
return (
<OptionalErrorBoundary
fallback={ShapeIndicatorErrorFallback}
onError={(error) =>
editor.annotateError(error, { origin: 'react.shapeIndicator', willCrashApp: false })
}
>
<EvenInnererIndicator key={shape.id} shape={shape} util={editor.getShapeUtil(shape)} />
</OptionalErrorBoundary>
)
}
/** @public */
export type TLShapeIndicatorProps = {
shapeId: TLShapeId
color?: string | undefined
opacity?: number
className?: string
hidden?: boolean
}
/** @public */
export const DefaultShapeIndicator = memo(function DefaultShapeIndicator({
shapeId,
className,
color,
hidden,
opacity,
}: TLShapeIndicatorProps) {
const editor = useEditor()
const rIndicator = useRef<SVGSVGElement>(null)
useQuickReactor(
'indicator transform',
() => {
const elm = rIndicator.current
if (!elm) return
const pageTransform = editor.getShapePageTransform(shapeId)
if (!pageTransform) return
elm.style.setProperty('transform', pageTransform.toCssString())
},
[editor, shapeId]
)
useLayoutEffect(() => {
const elm = rIndicator.current
if (!elm) return
elm.style.setProperty('display', hidden ? 'none' : 'block')
}, [hidden])
return (
<svg ref={rIndicator} className={classNames('tl-overlays__item', className)}>
<g className="tl-shape-indicator" stroke={color ?? 'var(--color-selected)'} opacity={opacity}>
<InnerIndicator editor={editor} id={shapeId} />
</g>
</svg>
)
})