tldraw/lib/shape-utils/rectangle.tsx
2021-06-02 12:50:34 +01:00

155 lines
3.6 KiB
TypeScript

import { v4 as uuid } from 'uuid'
import * as vec from 'utils/vec'
import { RectangleShape, ShapeType } from 'types'
import { registerShapeUtils } from './index'
import { boundsCollidePolygon, boundsContainPolygon } from 'utils/bounds'
import {
getBoundsFromPoints,
getRotatedCorners,
translateBounds,
} from 'utils/utils'
import { defaultStyle, getShapeStyle } from 'lib/shape-styles'
const rectangle = registerShapeUtils<RectangleShape>({
boundsCache: new WeakMap([]),
create(props) {
return {
id: uuid(),
type: ShapeType.Rectangle,
isGenerated: false,
name: 'Rectangle',
parentId: 'page0',
childIndex: 0,
point: [0, 0],
size: [1, 1],
radius: 2,
rotation: 0,
isAspectRatioLocked: false,
isLocked: false,
isHidden: false,
style: defaultStyle,
...props,
}
},
render({ id, size, radius, style }) {
const styles = getShapeStyle(style)
return (
<g id={id}>
<rect
id={id}
rx={radius}
ry={radius}
width={Math.max(0, size[0] - Number(styles.strokeWidth) / 2)}
height={Math.max(0, size[1] - Number(styles.strokeWidth) / 2)}
/>
</g>
)
},
applyStyles(shape, style) {
Object.assign(shape.style, style)
return this
},
getBounds(shape) {
if (!this.boundsCache.has(shape)) {
const [width, height] = shape.size
const bounds = {
minX: 0,
maxX: width,
minY: 0,
maxY: height,
width,
height,
}
this.boundsCache.set(shape, bounds)
}
return translateBounds(this.boundsCache.get(shape), shape.point)
},
getRotatedBounds(shape) {
return getBoundsFromPoints(
getRotatedCorners(this.getBounds(shape), shape.rotation)
)
},
getCenter(shape) {
const bounds = this.getRotatedBounds(shape)
return [bounds.minX + bounds.width / 2, bounds.minY + bounds.height / 2]
},
hitTest(shape) {
return true
},
hitTestBounds(shape, brushBounds) {
const rotatedCorners = getRotatedCorners(
this.getBounds(shape),
shape.rotation
)
return (
boundsContainPolygon(brushBounds, rotatedCorners) ||
boundsCollidePolygon(brushBounds, rotatedCorners)
)
},
rotateTo(shape, rotation) {
shape.rotation = rotation
return this
},
translateTo(shape, point) {
shape.point = vec.toPrecision(point)
return this
},
transform(shape, bounds, { initialShape, transformOrigin, scaleX, scaleY }) {
if (shape.rotation === 0 && !shape.isAspectRatioLocked) {
shape.size = [bounds.width, bounds.height]
shape.point = [bounds.minX, bounds.minY]
} else {
shape.size = vec.mul(
initialShape.size,
Math.min(Math.abs(scaleX), Math.abs(scaleY))
)
shape.point = [
bounds.minX +
(bounds.width - shape.size[0]) *
(scaleX < 0 ? 1 - transformOrigin[0] : transformOrigin[0]),
bounds.minY +
(bounds.height - shape.size[1]) *
(scaleY < 0 ? 1 - transformOrigin[1] : transformOrigin[1]),
]
shape.rotation =
(scaleX < 0 && scaleY >= 0) || (scaleY < 0 && scaleX >= 0)
? -initialShape.rotation
: initialShape.rotation
}
return this
},
transformSingle(shape, bounds) {
shape.size = [bounds.width, bounds.height]
shape.point = [bounds.minX, bounds.minY]
return this
},
setProperty(shape, prop, value) {
shape[prop] = value
return this
},
canTransform: true,
canChangeAspectRatio: true,
canStyleFill: true,
})
export default rectangle