tldraw/components/canvas/shape.tsx
2021-06-02 12:50:34 +01:00

128 lines
3 KiB
TypeScript

import React, { useRef, memo } from 'react'
import { useSelector } from 'state'
import styled from 'styles'
import { getShapeUtils } from 'lib/shape-utils'
import { getPage } from 'utils/utils'
import { DashStyle, ShapeStyles } from 'types'
import useShapeEvents from 'hooks/useShapeEvents'
import { getShapeStyle } from 'lib/shape-styles'
function Shape({ id, isSelecting }: { id: string; isSelecting: boolean }) {
const isSelected = useSelector((s) => s.values.selectedIds.has(id))
const shape = useSelector(({ data }) => getPage(data).shapes[id])
const rGroup = useRef<SVGGElement>(null)
const events = useShapeEvents(id, rGroup)
// This is a problem with deleted shapes. The hooks in this component
// may sometimes run before the hook in the Page component, which means
// a deleted shape will still be pulled here before the page component
// detects the change and pulls this component.
if (!shape) return null
const center = getShapeUtils(shape).getCenter(shape)
const transform = `
rotate(${shape.rotation * (180 / Math.PI)}, ${center})
translate(${shape.point})
`
const style = getShapeStyle(shape.style)
return (
<StyledGroup ref={rGroup} isSelected={isSelected} transform={transform}>
{isSelecting && (
<HoverIndicator
as="use"
href={'#' + id}
strokeWidth={+style.strokeWidth + 4}
variant={getShapeUtils(shape).canStyleFill ? 'filled' : 'hollow'}
{...events}
/>
)}
{!shape.isHidden && <RealShape id={id} style={style} />}
</StyledGroup>
)
}
const RealShape = memo(
({ id, style }: { id: string; style: ReturnType<typeof getShapeStyle> }) => {
return <StyledShape as="use" href={'#' + id} {...style} />
}
)
const StyledShape = styled('path', {
strokeLinecap: 'round',
strokeLinejoin: 'round',
pointerEvents: 'none',
})
const HoverIndicator = styled('path', {
stroke: '$selected',
strokeLinecap: 'round',
strokeLinejoin: 'round',
transform: 'all .2s',
fill: 'transparent',
filter: 'url(#expand)',
variants: {
variant: {
hollow: {
pointerEvents: 'stroke',
},
filled: {
pointerEvents: 'all',
},
},
},
})
const StyledGroup = styled('g', {
[`& ${HoverIndicator}`]: {
opacity: '0',
},
variants: {
isSelected: {
true: {
[`& ${HoverIndicator}`]: {
opacity: '0.2',
},
[`&:hover ${HoverIndicator}`]: {
opacity: '0.3',
},
[`&:active ${HoverIndicator}`]: {
opacity: '0.3',
},
},
false: {
[`& ${HoverIndicator}`]: {
opacity: '0',
},
[`&:hover ${HoverIndicator}`]: {
opacity: '0.16',
},
},
},
},
})
function Label({ text }: { text: string }) {
return (
<text
y={4}
x={4}
fontSize={18}
fill="black"
stroke="none"
alignmentBaseline="text-before-edge"
pointerEvents="none"
>
{text}
</text>
)
}
export { HoverIndicator }
export default memo(Shape)