291 lines
8.5 KiB
JavaScript
291 lines
8.5 KiB
JavaScript
import { useEffect, useRef, useState } from 'react'
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import Svg from '../draft/svg'
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import Defs from '../draft/defs'
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import Path from '../draft/path'
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import Point from '../draft/point'
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import Snippet from '../draft/snippet'
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import { getProps } from '../draft/utils'
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import { drag } from 'd3-drag'
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import { select } from 'd3-selection'
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import { event } from 'd3-dispatch'
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const Buttons = ({ transform, flip, rotate, setRotate, resetPart }) => {
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const letter = 'F'
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const style = { style: {fill: 'white', fontSize: 18, fontWeight: 'bold', textAnchor: 'middle'} }
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return (
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<g transform={transform}>
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{rotate
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? <circle cx="0" cy="0" r="50" className='stroke-2xl muted' />
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: <path d="M -50, 0 l 100,0 M 0,-50 l 0,100" className="stroke-2xl muted" />
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}
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<g className="svg-layout-button" onClick={resetPart}>
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<rect x="-10" y="-10" width="20" height="20" />
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<text x="0" y="10" {...style}>{letter}</text>
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</g>
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<g className="svg-layout-button" onClick={() => flip('y')}>
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<rect x="10" y="-10" width="20" height="20" className="button" />
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<text x="20" y="10" {...style} transform="scale(1,-1)">{letter}</text>
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</g>
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<g className="svg-layout-button" onClick={() => flip('x')}>
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<rect x="-30" y="-10" width="20" height="20" className="button" />
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<text x="20" y="10" {...style} transform="scale(-1,1)">{letter}</text>
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</g>
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</g>
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)
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}
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const dx = (pointA, pointB) => pointB.x - pointA.x
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const dy = (pointA, pointB) => pointB.y - pointA.y
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const rad2deg = radians => radians * 57.29577951308232
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const angle = (pointA, pointB) => {
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let rad = Math.atan2(-1 * dy(pointA, pointB), dx(pointA, pointB))
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while (rad < 0) rad += 2 * Math.PI
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return rad2deg(rad)
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}
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const generateTransform = (x, y, rot, flipX, flipY, part) => {
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const anchor = {
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x: 0,
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y: 0
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}
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const center = {
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x: part.topLeft.x + (part.bottomRight.x - part.topLeft.x)/2,
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y: part.topLeft.y + (part.bottomRight.y - part.topLeft.y)/2,
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}
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const dx = part.topLeft.x - center.x
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const dy = part.topLeft.y - center.y
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const transforms = [`translate(${x},${y})`]
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if (flipX) transforms.push(
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`translate(${center.x * -1}, ${center.y * -1})`,
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'scale(-1, 1)',
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`translate(${center.x * -1 + 2 * dx}, ${center.y})`
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)
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if (flipX) transforms.push(
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`translate(${center.x * -1}, ${center.y * -1})`,
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'scale(1, -1)',
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`translate(${center.x}, ${center.y * -1 + 2 * dy})`,
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)
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if (rot) transforms.push(
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`rotate(${rot}, ${center.x - anchor.x}, ${center.y - anchor.y})`
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)
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return transforms.join(' ')
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}
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const Part = props => {
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console.log('rendering draft')
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const { layout, gist, updateGist, name, part } = props
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const partLayout= layout.parts[name]
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// Don't just assume this makes sense
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if (typeof layout?.parts?.[name]?.move?.x === 'undefined') return null
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// Use a ref for direct DOM manipulation
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const partRef = useRef(null)
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const centerRef = useRef(null)
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// State variable to switch between moving or rotating the part
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const [rotate, setRotate] = useState(false)
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// Initialize drag handler
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useEffect(() => {
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handleDrag(select(partRef.current))
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}, [rotate])
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// These are kepts as vars because re-rendering on drag would kill performance
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// Managing the difference between re-render and direct DOM updates makes this
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// whole thing a bit tricky to wrap your head around
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let translateX = partLayout.move.x
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let translateY = partLayout.move.y
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let rotation = partLayout.rotate || 0
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let flipX = partLayout.flipX ? true : false
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let flipY = partLayout.flipY ? true : false
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let rotStart = { x: 0, y: 0 }
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const center = {
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x: part.topLeft.x + (part.bottomRight.x - part.topLeft.x)/2,
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y: part.topLeft.y + (part.bottomRight.y - part.topLeft.y)/2,
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}
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const handleDrag = drag()
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.subject(function() {
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const me = select(this);
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return { x: translateX, y: translateY }
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})
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.on('start', function(event) {
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rotStart = { x: event.x, y: event.y }
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})
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.on('drag', function(event) {
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if (rotate) {
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rotation = angle(rotStart, { x:event.x, y: event.y }) * -1
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} else {
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translateX = event.x
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translateY = event.y
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}
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const me = select(this);
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me.attr('transform', generateTransform(translateX, translateY, rotation, flipX, flipY, part))
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})
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.on('end', updateLayout)
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const resetPart = () => {
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rotation = 0
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flipX = 0
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flipY = 0
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updateLayout()
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}
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const toggleDragRotate = () => {
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updateLayout()
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setRotate(!rotate)
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}
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const updateLayout = () => {
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console.log('updating layout')
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props.updateGist(
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['layout', 'parts', name],
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{
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move: {
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x: translateX,
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y: translateY,
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},
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rotate: rotation,
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flipX,
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flipY
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}
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)
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}
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// Method to flip (mirror) the part along the X or Y axis
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const flip = axis => {
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if (axis === 'x') flipX = !flipX
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else flipY = !flipY
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updateLayout()
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}
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const grid = gist.paperless ? (
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<rect
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x={part.topLeft.x}
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y={part.topLeft.y}
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width={part.width}
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height={part.height}
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className="grid"
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fill={'url(#grid-' + eame + ')'}
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/>
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) : null
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return (
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<g
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{...getProps(part)}
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id={`part-${name}`}
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ref={props.name === 'pages' ? null : partRef}
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onClick={toggleDragRotate}
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>
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{grid}
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{
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props.gist?._state?.xray?.enabled &&
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props.gist?._state?.xray?.reveal?.[name]
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&& <XrayPart {...props} />
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}
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{Object.keys(part.paths).map((pathName) => (
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<Path
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key={pathName}
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pathName={pathName}
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path={part.paths[pathName]}
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topLeft={props.part.topLeft}
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bottomRight={props.part.bottomRight}
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{...props}
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/>
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))}
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{Object.keys(props.part.points).map((pointName) => (
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<Point
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key={pointName}
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pointName={pointName}
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point={props.part.points[pointName]}
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topLeft={props.part.topLeft}
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bottomRight={props.part.bottomRight}
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{...props}
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/>
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))}
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{Object.keys(props.part.snippets).map((snippetName) => (
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<Snippet
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key={snippetName}
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snippetName={snippetName}
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snippet={props.part.snippets[snippetName]}
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{...props}
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/>
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))}
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<text x={center.x} y={center.y} ref={centerRef} />
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<rect
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x={part.topLeft.x}
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y={part.topLeft.y}
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width={part.width}
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height={part.height}
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className={`layout-rect ${rotate ? 'rotate' : 'move'}`}
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/>
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{props.name !== 'pages' && <Buttons
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transform={`translate(${part.topLeft.x + part.width/2}, ${part.topLeft.y + part.height/2})`}
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flip={flip}
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rotate={rotate}
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setRotate={setRotate}
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resetPart={resetPart}
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/>}
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</g>
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)
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}
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const Draft = props => {
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const { patternProps, gist, app, updateGist, unsetGist, bgProps={} } = props
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const { layout=false } = gist
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useEffect(() => {
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if (!layout) {
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// On the initial draft, core does the layout, so we set the layout to the auto-layout
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// After this, core won't handle layout anymore. It's up to the user from this point onwards
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// FIXME: Allow use the option to clear the layout again
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updateGist(['layout'], {
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...patternProps.autoLayout,
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width: patternProps.width,
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height: patternProps.height
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})
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}
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}, [layout])
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if (!patternProps || !layout) return null
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// We need to make sure the `pages` part is at the bottom of the pile
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// so we can drag-drop all parts on top of it.
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// Bottom in SVG means we need to draw it first
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const partList = Object.keys(patternProps.parts)
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return (
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<div className="my-8 w-11/12 m-auto border-2 border-dotted border-base-content shadow">
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<Svg {...patternProps} embed={gist.embed}>
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<Defs {...patternProps} />
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<style>{`:root { --pattern-scale: ${gist.scale || 1}}`}</style>
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<g>
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<rect x="0" y="0" width={patternProps.width} height={patternProps.height} {...bgProps} />
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{[
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partList.filter(name => name === 'pages'),
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partList.filter(name => name !== 'pages'),
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].map(list => list.map(name => (
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<Part {...{
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key:name,
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name,
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part: patternProps.parts[name],
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layout,
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app,
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gist,
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updateGist,
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unsetGist,
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}}/>
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)))}
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</g>
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</Svg>
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</div>
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)
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}
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export default Draft
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