tldraw/components/canvas/shape.tsx
2021-05-29 14:59:11 +01:00

138 lines
3.1 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 { ShapeStyles } from 'types'
import useShapeEvents from 'hooks/useShapeEvents'
function Shape({ id, isSelecting }: { id: string; isSelecting: boolean }) {
const isHovered = useSelector((state) => state.data.hoveredId === id)
const isSelected = useSelector((state) => state.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})`
return (
<StyledGroup
ref={rGroup}
isHovered={isHovered}
isSelected={isSelected}
transform={transform}
{...events}
>
{isSelecting && (
<HoverIndicator
as="use"
href={'#' + id}
strokeWidth={+shape.style.strokeWidth + 8}
/>
)}
{!shape.isHidden && <StyledShape id={id} style={shape.style} />}
</StyledGroup>
)
}
const StyledShape = memo(
({ id, style }: { id: string; style: ShapeStyles }) => {
return <use href={'#' + id} {...style} />
}
)
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>
)
}
const HoverIndicator = styled('path', {
fill: 'none',
stroke: 'transparent',
pointerEvents: 'all',
strokeLinecap: 'round',
strokeLinejoin: 'round',
transform: 'all .2s',
})
const StyledGroup = styled('g', {
[`& ${HoverIndicator}`]: {
opacity: '0',
},
variants: {
isSelected: {
true: {},
false: {},
},
isHovered: {
true: {},
false: {},
},
},
compoundVariants: [
{
isSelected: true,
isHovered: true,
css: {
[`& ${HoverIndicator}`]: {
opacity: '1',
stroke: '$hint',
fill: '$hint',
// zStrokeWidth: [8, 4],
},
},
},
{
isSelected: true,
isHovered: false,
css: {
[`& ${HoverIndicator}`]: {
opacity: '1',
stroke: '$hint',
fill: '$hint',
// zStrokeWidth: [6, 3],
},
},
},
{
isSelected: false,
isHovered: true,
css: {
[`& ${HoverIndicator}`]: {
opacity: '1',
stroke: '$hint',
fill: '$hint',
// zStrokeWidth: [8, 4],
},
},
},
],
})
export { HoverIndicator }
export default memo(Shape)