tldraw/components/canvas/shape.tsx
2021-05-15 18:11:08 +01:00

155 lines
3.5 KiB
TypeScript

import React, { useCallback, useRef, memo } from "react"
import state, { useSelector } from "state"
import inputs from "state/inputs"
import { getShapeUtils } from "lib/shapes"
import styled from "styles"
function Shape({ id }: { id: string }) {
const rGroup = useRef<SVGGElement>(null)
const isHovered = useSelector((state) => state.data.hoveredId === id)
const isSelected = useSelector((state) => state.values.selectedIds.has(id))
const shape = useSelector(
({ data }) => data.document.pages[data.currentPageId].shapes[id]
)
const handlePointerDown = useCallback(
(e: React.PointerEvent) => {
e.stopPropagation()
rGroup.current.setPointerCapture(e.pointerId)
state.send("POINTED_SHAPE", inputs.pointerDown(e, id))
},
[id]
)
const handlePointerUp = useCallback(
(e: React.PointerEvent) => {
e.stopPropagation()
rGroup.current.releasePointerCapture(e.pointerId)
state.send("STOPPED_POINTING", inputs.pointerUp(e))
},
[id]
)
const handlePointerEnter = useCallback(
(e: React.PointerEvent) => {
state.send("HOVERED_SHAPE", inputs.pointerEnter(e, id))
},
[id, shape]
)
const handlePointerMove = useCallback(
(e: React.PointerEvent) => {
state.send("MOVED_OVER_SHAPE", inputs.pointerEnter(e, id))
},
[id, shape]
)
const handlePointerLeave = useCallback(
() => state.send("UNHOVERED_SHAPE", { target: id }),
[id]
)
return (
<StyledGroup
ref={rGroup}
isHovered={isHovered}
isSelected={isSelected}
transform={`translate(${shape.point})`}
onPointerDown={handlePointerDown}
onPointerUp={handlePointerUp}
onPointerEnter={handlePointerEnter}
onPointerLeave={handlePointerLeave}
onPointerMove={handlePointerMove}
>
<defs>{getShapeUtils(shape).render(shape)}</defs>
<HoverIndicator as="use" xlinkHref={"#" + id} />
<MainShape as="use" xlinkHref={"#" + id} {...shape.style} />
<Indicator as="use" xlinkHref={"#" + id} />
</StyledGroup>
)
}
const MainShape = styled("use", {
zStrokeWidth: 1,
})
const Indicator = styled("path", {
fill: "none",
stroke: "transparent",
zStrokeWidth: 1,
pointerEvents: "none",
strokeLineCap: "round",
strokeLinejoin: "round",
})
const HoverIndicator = styled("path", {
fill: "none",
stroke: "transparent",
zStrokeWidth: [8, 4],
pointerEvents: "all",
strokeLinecap: "round",
strokeLinejoin: "round",
transform: "all .2s",
})
const StyledGroup = styled("g", {
[`& ${HoverIndicator}`]: {
opacity: "0",
},
variants: {
isSelected: {
true: {
[`& ${Indicator}`]: {
stroke: "$selected",
},
},
false: {},
},
isHovered: {
true: {},
false: {},
},
},
compoundVariants: [
{
isSelected: true,
isHovered: true,
css: {
[`& ${HoverIndicator}`]: {
opacity: "1",
stroke: "$hint",
zStrokeWidth: [8, 4],
},
},
},
{
isSelected: true,
isHovered: false,
css: {
[`& ${HoverIndicator}`]: {
opacity: "1",
stroke: "$hint",
zStrokeWidth: [6, 3],
},
},
},
{
isSelected: false,
isHovered: true,
css: {
[`& ${HoverIndicator}`]: {
opacity: "1",
stroke: "$hint",
zStrokeWidth: [8, 4],
},
},
},
],
})
export { Indicator, HoverIndicator }
export default memo(Shape)