fix(label): selected path add point
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5168f53_polygon_brush_point_edit_fix.md
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5168f53_polygon_brush_point_edit_fix.md
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# 5168f53 回归分析与修复记录
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## 问题描述
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- 提交:`5168f539e0dbf84d6a1625d10ef98149fb21ffe6`
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- 现象:`polygon` / `brush` / `point` 类型对象在被选中后,无法通过鼠标悬浮边触发边高亮,也无法通过双击边新增点。
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## usePaperStore 关键链路梳理
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1. 选中对象
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- 入口主要在 `components/label/usePaperStore.ts` 的 `initPanTool -> panTool.onMouseDown`
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- 通过 `resolvePanHitResult()` 命中对象、辅助边(`pathBuff`)或辅助点(`pathCircle`)
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- 选中后会调用:
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- `usePaperSupportStore.handleBufferPaths()` 生成可 hover / 可双击的辅助边
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- `usePaperSupportStore.handleCircles()` 生成可拖拽节点
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- `usePaperSupportStore.handleMask()` / `handleText()` 生成刷子/点类型附加辅助层
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2. 悬浮边高亮
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- `usePaperSupportStore.handleBufferPaths()` 会遍历 path 的 segment,调用 `usePaperStore.getBuffPath()` 为每条边创建 `pathBuff`
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- `getBuffPath()` 中给 `bufferPath` 绑定 `onMouseEnter / onMouseLeave`
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- 悬浮时通过额外创建 `pathBuffHover` 白色描边来实现高亮
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- 同时把当前 hover 信息记入 `hoveredBufferPathInfo`
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3. 双击边新增点
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- 仍然在 `panTool.onMouseDown`
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- 双击判定由 `isPaperDoubleClick()` 完成
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- 命中 `pathBuff` 或存在 `hoveredBufferPathInfo` 时,会走 `stroke` 分支或 `hoveredBufferInfo` 分支
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- 最终通过 `path.insert(hitIndex + 1, point)` 新增节点
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4. 右侧/外部选择对象后的恢复链路
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- `components/label/utils/objectVisibility.ts` 的 `syncSelectedObjectsVisualState()` 负责根据 `selectedPath` 重新恢复画布上的选中态
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- 该链路也必须正确恢复:
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- 选中的实际可编辑 path
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- 辅助边 `pathBuff`
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- 辅助点 `pathCircle`
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- 否则对象虽“被选中”,但无法进入边 hover / 双击增点链路
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## 回归根因
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### 根因 1:辅助边被改成完全透明,导致命中/hover 链路失效
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- 在 `getBuffPath()` 中,`pathBuff.strokeColor` 被改成了完全透明的颜色
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- 这会导致 `pathBuff` 在某些情况下不再稳定触发 hover / hit 行为
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- 后果:
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- `hoveredBufferPathInfo` 无法建立
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- 边高亮不出现
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- 双击新增点依赖的 `pathBuff` 命中链路失效
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### 根因 2:选中态恢复时,没有稳定选中“真正可编辑的 path”
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- `polygon` / `brush` / `point` 可能存在 `CompoundPath + child Path` 的结构
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- 之前恢复选中态时,更多是“对象被选中”,但没有保证“某个可编辑 child path 被明确选中并生成辅助边/辅助点”
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- 后果:
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- 外部选中/恢复选中后,缺少 `pathBuff`
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- 即使对象看起来是选中状态,也无法 hover 边、双击增点
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## 修复方案
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### 已做
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- [x] 在 `components/label/usePaperStore.ts` 中新增 `ensureEditablePaperPathSelected()`
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- 统一从同一对象 id 下挑出一个真实可编辑的 `paper.Path`
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- 排除 `isHollowPolygon`
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- 保证只有该可编辑 path 维持 `selected = true`
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- [x] 修复 `applyPaperSelectedPath()`
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- 对 `polygon` / `brush` / `point` 不再只依赖当前 item 是否刚好是 `paper.Path`
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- 改为统一拿到可编辑 path 后恢复:
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- `handleBufferPaths`
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- `handleCircles`
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- `handleMask`
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- `handleText`
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- [x] 修复 `components/label/utils/objectVisibility.ts` 中的 `applySelectedItemVisual()`
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- 保证右侧面板/隐藏恢复/重绘恢复时,同样能恢复到真实可编辑 path 的辅助编辑态
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- [x] 修复 `getBuffPath()` 的命中可用性
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- 不再使用 alpha 为 `0` 的完全透明描边
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- 改为极低透明度(`alpha = 0.001`)以保留 hover/hit 能力,同时视觉上保持不可见
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- [x] 完成静态校验
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- 执行 `pnpm exec tsc --noEmit`
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- 当前补丁未引入新的 TypeScript 类型错误
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## 待验证
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- [ ] 直接点击已存在 `polygon` 对象后,悬浮边是否出现高亮
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- [ ] 直接点击已存在 `polygon` 对象后,双击边是否成功新增点
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- [ ] 直接点击已存在 `brush` 对象后,悬浮边是否出现高亮
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- [ ] 直接点击已存在 `brush` 对象后,双击边是否成功新增点
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- [ ] 直接点击已存在 `point` 对象后,悬浮边是否出现高亮
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- [ ] 直接点击已存在 `point` 对象后,双击边是否成功新增点
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- [ ] 从右侧对象列表切换选中后,上述三类对象是否仍可编辑
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- [ ] 多区域/CompoundPath 对象时,是否总能命中当前可编辑子路径
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## 涉及文件
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- `components/label/usePaperStore.ts`
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- `components/label/utils/objectVisibility.ts`
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- `5168f53_polygon_brush_point_edit_fix.md`
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@@ -899,6 +899,28 @@ const isPaperObjectType = (type: unknown) =>
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typeof type === "string" &&
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PAPER_OBJECT_TYPES.includes(type as (typeof PAPER_OBJECT_TYPES)[number])
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export const ensureEditablePaperPathSelected = (objectId: number) => {
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const objectPaths = usePaperStore
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.getState()
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.getItemsById(objectId)
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.filter(
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(item): item is paper.Path =>
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item instanceof paper.Path && isPaperObjectType(item.data?.type)
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)
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if (!objectPaths.length) return null
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const editablePaths = objectPaths.filter((item) => !item.data?.isHollowPolygon)
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const activePath =
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editablePaths.find((item) => item.data?.selected) || editablePaths[0] || null
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objectPaths.forEach((item) => {
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item.data.selected = item === activePath
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})
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return activePath
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}
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const isPaperContextHitType = (type: unknown) =>
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typeof type === "string" &&
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PAPER_CONTEXT_HIT_TYPES.includes(
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@@ -1001,6 +1023,13 @@ const resetPaperShapeFillColor = (item: paper.Item) => {
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}
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const applyPaperSelectedPath = (item: paper.Path | paper.CompoundPath) => {
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const objectId = Number(item.data?.id)
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const editablePath = Number.isFinite(objectId)
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? ensureEditablePaperPathSelected(objectId)
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: item instanceof paper.Path && !item.data?.isHollowPolygon
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? item
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: null
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if (item.data.type === "rectangle" && item instanceof paper.Path) {
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item.data.selected = true
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usePaperSupportStore.getState().handleBufferPaths(item)
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@@ -1008,19 +1037,25 @@ const applyPaperSelectedPath = (item: paper.Path | paper.CompoundPath) => {
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item.fillColor = item.data.fillColor || item.fillColor || null
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} else if (item.data.type === "brush") {
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item.data.selected = true
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if (item instanceof paper.Path) {
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usePaperSupportStore.getState().handleMask(item)
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usePaperSupportStore.getState().handleBufferPaths(item)
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usePaperSupportStore.getState().handleCircles(item)
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if (editablePath) {
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usePaperSupportStore.getState().handleMask(editablePath)
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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} else if (item.data.type === "point" && item instanceof paper.Path) {
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} else if (item.data.type === "point") {
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item.data.selected = true
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usePaperSupportStore.getState().handleMask(item)
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usePaperSupportStore.getState().handleText(item)
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usePaperSupportStore.getState().handleBufferPaths(item)
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usePaperSupportStore.getState().handleCircles(item)
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if (editablePath) {
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usePaperSupportStore.getState().handleMask(editablePath)
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usePaperSupportStore.getState().handleText(editablePath)
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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} else if (item.data.type === "polygon") {
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item.data.selected = true
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if (editablePath) {
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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if (!(item instanceof paper.Path) || !item.data?.isHollowPolygon) {
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item.fillColor = item.data.fillColor || item.fillColor || null
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}
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@@ -6653,15 +6688,17 @@ export const usePaperStore = create<PaperState>((set) => ({
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item: paper.Segment,
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index: number,
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id: number,
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_color: any
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color: any
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) => {
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if (!item.next) return null
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const hitStrokeColor = clonePaperColor(color) || new paper.Color("#fff")
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hitStrokeColor.alpha = 0.001
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let bufferPath: paper.Path = new paper.Path(
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Object.assign(
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{
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parent: usePaperStore.getState().group!,
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segments: [item.point, item.next],
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strokeColor: new paper.Color(0, 0, 0, 0), // 保留 hit 区域,但本体不可见
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strokeColor: hitStrokeColor, // 透明度不能为 0,否则部分命中/hover 事件会失效
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strokeScaling: false,
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strokeWidth: 6, // 适度放宽 hover 区域,但避免干扰对象外默认点击
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strokeCap: "round",
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@@ -1,7 +1,7 @@
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import paper from "paper"
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import { useLabelStore, useObjectStore } from "../store"
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import { useOtherToolsStore } from "../useOtherToolsStore"
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import { usePaperStore } from "../usePaperStore"
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import { ensureEditablePaperPathSelected, usePaperStore } from "../usePaperStore"
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import { usePaperSupportStore } from "../usePaperSupportStore"
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import { useTopToolsStore } from "../useTopToolsStore"
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@@ -93,6 +93,13 @@ const applySelectedItemVisual = (item: paper.Item) => {
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if (!["rectangle", "polygon", "brush", "point"].includes(itemType || ""))
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return
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const objectId = Number(item.data?.id)
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const editablePath = Number.isFinite(objectId)
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? ensureEditablePaperPathSelected(objectId)
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: item instanceof paper.Path && !item.data?.isHollowPolygon
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? item
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: null
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if (itemType === "rectangle" && item instanceof paper.Path) {
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item.data.selected = true
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usePaperSupportStore.getState().handleBufferPaths(item)
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@@ -100,19 +107,25 @@ const applySelectedItemVisual = (item: paper.Item) => {
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item.fillColor = item.data.fillColor || item.fillColor || null
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} else if (itemType === "brush") {
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item.data.selected = true
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if (item instanceof paper.Path) {
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usePaperSupportStore.getState().handleMask(item)
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usePaperSupportStore.getState().handleBufferPaths(item)
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usePaperSupportStore.getState().handleCircles(item)
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if (editablePath) {
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usePaperSupportStore.getState().handleMask(editablePath)
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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} else if (itemType === "point" && item instanceof paper.Path) {
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} else if (itemType === "point") {
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item.data.selected = true
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usePaperSupportStore.getState().handleMask(item)
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usePaperSupportStore.getState().handleText(item)
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usePaperSupportStore.getState().handleBufferPaths(item)
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usePaperSupportStore.getState().handleCircles(item)
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if (editablePath) {
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usePaperSupportStore.getState().handleMask(editablePath)
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usePaperSupportStore.getState().handleText(editablePath)
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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} else if (itemType === "polygon") {
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item.data.selected = true
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if (editablePath) {
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usePaperSupportStore.getState().handleBufferPaths(editablePath)
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usePaperSupportStore.getState().handleCircles(editablePath)
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}
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if (!(item instanceof paper.Path) || !item.data?.isHollowPolygon) {
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item.fillColor = item.data.fillColor || item.fillColor || null
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}
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