kopia lustrzana https://github.com/Tldraw/Tldraw
70 wiersze
2.0 KiB
TypeScript
70 wiersze
2.0 KiB
TypeScript
import { intersectPolygonBounds } from '@tldraw/intersect'
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import * as React from 'react'
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import type { TLBounds, TLComponentProps, TLForwardedRef, TLShape, TLUser } from '~types'
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import Utils from '~utils'
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export abstract class TLShapeUtil<T extends TLShape, E extends Element = any, M = any> {
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refMap = new Map<string, React.RefObject<E>>()
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boundsCache = new WeakMap<TLShape, TLBounds>()
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showCloneHandles = false
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hideBounds = false
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isStateful = false
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abstract Component: React.ForwardRefExoticComponent<TLComponentProps<T, E, M>>
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abstract Indicator: (props: {
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shape: T
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meta: M
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user?: TLUser<T>
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bounds: TLBounds
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isHovered: boolean
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isSelected: boolean
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}) => React.ReactElement | null
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abstract getBounds: (shape: T) => TLBounds
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shouldRender = (prev: T, next: T): boolean => true
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getRef = (shape: T): React.RefObject<E> => {
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if (!this.refMap.has(shape.id)) {
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this.refMap.set(shape.id, React.createRef<E>())
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}
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return this.refMap.get(shape.id)!
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}
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hitTestBounds = (shape: T, bounds: TLBounds) => {
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const shapeBounds = this.getBounds(shape)
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const corners = Utils.getRotatedCorners(shapeBounds, shape.rotation)
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return (
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corners.every((point) => Utils.pointInBounds(point, bounds)) ||
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intersectPolygonBounds(corners, bounds).length > 0
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)
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}
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getRotatedBounds: (shape: T) => TLBounds = (shape) => {
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return Utils.getBoundsFromPoints(Utils.getRotatedCorners(this.getBounds(shape), shape.rotation))
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}
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/* --------------------- Static --------------------- */
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static Component = <T extends TLShape, E extends Element = any, M = any>(
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component: (props: TLComponentProps<T, E, M>, ref: TLForwardedRef<E>) => React.ReactElement
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) => {
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return React.forwardRef(component)
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}
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static Indicator = <T extends TLShape, M = any>(
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component: (props: {
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shape: T
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meta: M
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isHovered: boolean
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isSelected: boolean
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bounds: TLBounds
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}) => React.ReactElement
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) => component
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}
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