310 lines
13 KiB
TypeScript
310 lines
13 KiB
TypeScript
import React, { useCallback, useMemo, useRef, useState } from 'react'
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import Moveable from 'react-moveable'
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import type { Frame, WObject } from '@/lib/wysiwyg/schema'
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import { snapAngle as snapAngleUtil } from '@/lib/wysiwyg/snap'
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function snap8(v: number) {
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return Math.round(v / 8) * 8
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}
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// Shift 키 타입 가드: unknown 입력에서 shiftKey 존재 여부를 안전하게 판별
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function isShiftEvent(ev: unknown): ev is { shiftKey?: boolean } {
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return typeof ev === 'object' && ev !== null && 'shiftKey' in (ev as Record<string, unknown>)
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}
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// 테스트 환경(jsdom)에서 react-moveable이 사용하는 elementFromPoint가 없을 수 있어 안전한 폴리필을 추가
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type DocWithEFP = Document & { elementFromPoint?: (x: number, y: number) => Element | null }
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if (typeof document !== 'undefined') {
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const d = document as DocWithEFP
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if (typeof d.elementFromPoint !== 'function') {
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d.elementFromPoint = (_x: number, _y: number) => null
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}
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}
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export type CanvasProps = {
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frame: Frame
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onChange?: (next: Frame) => void
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}
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export function Canvas({ frame, onChange }: CanvasProps) {
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const [model, setModel] = useState<Frame>(frame)
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const [selectedId, setSelectedId] = useState<string | null>(model.layers[0]?.objects[0]?.id ?? null)
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const draggingRef = useRef<{ id: string; startX: number; startY: number; origX: number; origY: number } | null>(null)
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const resizingRef = useRef<{ id: string; startX: number; startY: number; origW: number; origH: number } | null>(null)
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const rotatingRef = useRef<{ id: string; startX: number; startY: number; origDeg: number } | null>(null)
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const [showGuides, setShowGuides] = useState(false)
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const [guidePos, setGuidePos] = useState<{ x: number; y: number }>({ x: 0, y: 0 })
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// 선택된 객체 DOM을 식별하기 위한 ref(선택자 기반 target으로 전환)
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const selectedElRef = useRef<HTMLDivElement | null>(null)
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const selected = useMemo(() => {
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for (const layer of model.layers) {
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const obj = layer.objects.find((o) => o.id === selectedId)
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if (obj) return obj
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}
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return null
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}, [model, selectedId])
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const updateObject = useCallback((id: string, updater: (o: WObject) => WObject) => {
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setModel((prev) => {
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const next: Frame = { ...prev, layers: prev.layers.map((ly) => ({ ...ly, objects: ly.objects.map((o) => (o.id === id ? updater(o) : o)) })) }
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onChange?.(next)
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return next
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})
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}, [onChange])
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const onKeyDown = useCallback((e: React.KeyboardEvent) => {
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if (!selected) return
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let dx = 0, dy = 0
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let step = 1
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let useSnap = true
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// Shift: 미세 이동(1px, 스냅 없음), Alt: 가속 이동(16px, 스냅 적용)
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if (e.shiftKey) { step = 1; useSnap = false }
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else if (e.altKey) { step = 16; useSnap = true }
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if (e.key === 'ArrowLeft') dx = -step
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else if (e.key === 'ArrowRight') dx = step
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else if (e.key === 'ArrowUp') dy = -step
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else if (e.key === 'ArrowDown') dy = step
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else return
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e.preventDefault()
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updateObject(selected.id, (o) => {
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const tx = o.x + dx
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const ty = o.y + dy
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const nx = useSnap ? snap8(tx) : tx
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const ny = useSnap ? snap8(ty) : ty
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return { ...o, x: nx, y: ny }
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})
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}, [selected, updateObject])
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const onMouseDownObj = useCallback((e: React.MouseEvent, o: WObject) => {
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setSelectedId(o.id)
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draggingRef.current = { id: o.id, startX: e.clientX, startY: e.clientY, origX: o.x, origY: o.y }
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setShowGuides(true)
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setGuidePos({ x: snap8(o.x), y: snap8(o.y) })
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}, [])
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const onMouseMoveCanvas = useCallback((e: React.MouseEvent) => {
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const rot = rotatingRef.current
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if (rot) {
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const dx = e.clientX - rot.startX
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let next = rot.origDeg + dx
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if (!e.shiftKey) {
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next = Math.round(next / 15) * 15
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}
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updateObject(rot.id, (o) => ({ ...o, rotate: next }))
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return
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}
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const r = resizingRef.current
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if (r) {
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const dx = e.clientX - r.startX
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const dy = e.clientY - r.startY
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const nw = Math.max(8, snap8(r.origW + dx))
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const nh = Math.max(8, snap8(r.origH + dy))
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updateObject(r.id, (o) => ({ ...o, width: nw, height: nh }))
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return
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}
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const d = draggingRef.current
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if (d) {
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const dx = e.clientX - d.startX
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const dy = e.clientY - d.startY
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const nx = snap8(d.origX + dx)
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const ny = snap8(d.origY + dy)
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setGuidePos({ x: nx, y: ny })
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updateObject(d.id, (o) => ({ ...o, x: nx, y: ny }))
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}
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}, [updateObject])
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const onMouseUpCanvas = useCallback(() => {
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draggingRef.current = null
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resizingRef.current = null
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rotatingRef.current = null
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setShowGuides(false)
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}, [])
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const onMouseDownResize = useCallback((e: React.MouseEvent, o: WObject) => {
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e.stopPropagation()
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resizingRef.current = { id: o.id, startX: e.clientX, startY: e.clientY, origW: o.width, origH: o.height }
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}, [])
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const onMouseDownRotate = useCallback((e: React.MouseEvent, o: WObject) => {
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e.stopPropagation()
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rotatingRef.current = { id: o.id, startX: e.clientX, startY: e.clientY, origDeg: o.rotate }
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}, [])
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return (
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<div
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role="application"
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aria-label="WYSIWYG Canvas"
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tabIndex={0}
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onKeyDown={onKeyDown}
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onMouseMove={onMouseMoveCanvas}
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onMouseUp={onMouseUpCanvas}
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style={{ position: 'relative', width: model.width, height: model.height, outline: '0' }}
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data-testid="wysiwyg-canvas"
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>
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{showGuides && (
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<>
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<div data-testid="guide-x" style={{ position: 'absolute', left: guidePos.x, top: 0, bottom: 0, width: 1, background: '#0ea5e9' }} />
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<div data-testid="guide-y" style={{ position: 'absolute', top: guidePos.y, left: 0, right: 0, height: 1, background: '#0ea5e9' }} />
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</>
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)}
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{model.layers.map((layer) => layer.visible !== false && layer.objects.map((o) => (
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<div
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key={o.id}
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data-testid={`obj-${o.id}`}
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aria-label={`object ${o.id}`}
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onMouseDown={(e) => onMouseDownObj(e, o)}
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ref={selectedId === o.id ? (el) => { selectedElRef.current = el } : undefined}
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style={{ position: 'absolute', left: o.x, top: o.y, width: o.width, height: o.height, transform: `rotate(${o.rotate}deg)`, outline: selectedId===o.id? '2px solid #0ea5e9':'none' }}
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>
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{selectedId === o.id && (
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<div
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data-testid={`resize-handle-${o.id}`}
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onMouseDown={(e) => onMouseDownResize(e, o)}
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style={{ position: 'absolute', right: 0, bottom: 0, width: 10, height: 10, background: '#0ea5e9', cursor: 'nwse-resize' }}
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/>
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)}
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{selectedId === o.id && (
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<div
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data-testid={`rotate-handle-${o.id}`}
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onMouseDown={(e) => onMouseDownRotate(e, o)}
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style={{ position: 'absolute', left: '50%', top: -16, width: 10, height: 10, marginLeft: -5, background: '#0ea5e9', borderRadius: 5, cursor: 'grab' }}
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/>
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)}
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</div>
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)))}
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{/* Moveable 최소 통합: 드래그/리사이즈/회전 + 8px 스냅 그리드 활성화 */}
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<Moveable
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target={selectedId ? `[data-testid="obj-${selectedId}"]` : undefined}
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draggable
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resizable
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rotatable
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snappable
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snapGridWidth={8}
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snapGridHeight={8}
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onDragStart={() => {
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// 드래그 시작 시 가이드 표시
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setShowGuides(true)
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}}
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onDrag={({ left, top }) => {
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if (!selected) return
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const rawLeft = typeof left === 'number' ? left : 0
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const rawTop = typeof top === 'number' ? top : 0
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let nx = snap8(rawLeft)
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let ny = snap8(rawTop)
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// 객체-객체 스냅(수직/수평 중심 + 에지): 임계 8px
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const threshold = 8
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let snappedCenterX: number | undefined
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let snappedCenterY: number | undefined
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// 에지 스냅 후보(nx, ny로 바로 설정 가능한 값) 및 가이드 좌표
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let edgeNx: number | undefined
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let edgeNy: number | undefined
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let guideEdgeX: number | undefined
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let guideEdgeY: number | undefined
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let minDistX = Number.POSITIVE_INFINITY
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let minDistY = Number.POSITIVE_INFINITY
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outer: for (const layer of model.layers) {
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for (const obj of layer.objects) {
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if (obj.id === selected.id) continue
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const otherCenterX = obj.x + obj.width / 2
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const selCenterX = rawLeft + selected.width / 2
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if (Math.abs(selCenterX - otherCenterX) <= threshold) {
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snappedCenterX = otherCenterX
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// 수평 중심도 동시에 체크
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const otherCenterY = obj.y + obj.height / 2
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const selCenterY = rawTop + selected.height / 2
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if (Math.abs(selCenterY - otherCenterY) <= threshold) {
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snappedCenterY = otherCenterY
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}
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break outer
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}
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const otherCenterY2 = obj.y + obj.height / 2
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const selCenterY2 = rawTop + selected.height / 2
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if (Math.abs(selCenterY2 - otherCenterY2) <= threshold) {
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snappedCenterY = otherCenterY2
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// x는 그리드, y만 스냅으로 나가고 루프 종료
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break outer
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}
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// 에지 스냅 후보 계산 (X축)
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const selLeft = rawLeft
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const selRight = rawLeft + selected.width
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const otherLeft = obj.x
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const otherRight = obj.x + obj.width
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const xPairs: Array<{dist: number; nx: number; guideX: number}> = [
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{ dist: Math.abs(selLeft - otherLeft), nx: otherLeft, guideX: otherLeft }, // L-L
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{ dist: Math.abs(selLeft - otherRight), nx: otherRight, guideX: otherRight }, // L-R
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{ dist: Math.abs(selRight - otherLeft), nx: otherLeft - selected.width, guideX: otherLeft }, // R-L
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{ dist: Math.abs(selRight - otherRight), nx: otherRight - selected.width, guideX: otherRight }, // R-R
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]
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for (const p of xPairs) {
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if (p.dist <= threshold && p.dist < minDistX) {
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minDistX = p.dist
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edgeNx = p.nx
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guideEdgeX = p.guideX
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}
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}
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// 에지 스냅 후보 계산 (Y축)
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const selTop = rawTop
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const selBottom = rawTop + selected.height
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const otherTop = obj.y
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const otherBottom = obj.y + obj.height
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const yPairs: Array<{dist: number; ny: number; guideY: number}> = [
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{ dist: Math.abs(selTop - otherTop), ny: otherTop, guideY: otherTop }, // T-T
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{ dist: Math.abs(selTop - otherBottom), ny: otherBottom, guideY: otherBottom }, // T-B
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{ dist: Math.abs(selBottom - otherTop), ny: otherTop - selected.height, guideY: otherTop }, // B-T
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{ dist: Math.abs(selBottom - otherBottom), ny: otherBottom - selected.height, guideY: otherBottom }, // B-B
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]
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for (const p of yPairs) {
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if (p.dist <= threshold && p.dist < minDistY) {
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minDistY = p.dist
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edgeNy = p.ny
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guideEdgeY = p.guideY
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}
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}
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}
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}
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// 우선순위: 에지 스냅 > 중심 스냅 > 그리드
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if (typeof edgeNx === 'number') {
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nx = edgeNx
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} else if (typeof snappedCenterX === 'number') {
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nx = snappedCenterX - selected.width / 2
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}
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if (typeof edgeNy === 'number') {
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ny = edgeNy
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} else if (typeof snappedCenterY === 'number') {
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ny = snappedCenterY - selected.height / 2
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}
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// 가이드라인 좌표 업데이트: 축별로 에지/중심/그리드 순으로 우선 표시
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const guideX = typeof guideEdgeX === 'number' ? guideEdgeX : (typeof snappedCenterX === 'number' ? snappedCenterX : nx)
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const guideY = typeof guideEdgeY === 'number' ? guideEdgeY : (typeof snappedCenterY === 'number' ? snappedCenterY : ny)
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setGuidePos({ x: guideX, y: guideY })
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updateObject(selected.id, (o) => ({ ...o, x: nx, y: ny }))
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}}
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onDragEnd={() => {
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// 드래그 종료 시 가이드 숨김
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setShowGuides(false)
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}}
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onResize={({ width, height }) => {
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if (!selected) return
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const nw = Math.max(8, snap8(typeof width === 'number' ? width : 0))
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const nh = Math.max(8, snap8(typeof height === 'number' ? height : 0))
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updateObject(selected.id, (o) => ({ ...o, width: nw, height: nh }))
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}}
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onRotate={({ rotate, inputEvent }) => {
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if (!selected) return
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const fine = isShiftEvent(inputEvent) && !!inputEvent.shiftKey
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const nd = snapAngleUtil(typeof rotate === 'number' ? rotate : 0, fine)
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updateObject(selected.id, (o) => ({ ...o, rotate: nd }))
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}}
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/>
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</div>
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)
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}
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