feat(编辑能力): 完善内部对象编辑，修复文字重框与复制异常

ofdgo_editor_erase.go

@@ -41,13 +41,25 @@ func (e *Editor) EraseObjects(page int, ids []string, box Box) error {
 // 入参: page 页面索引, ids 对象标识, points 页面毫米坐标，至少三个点
 // 返回: error 错误信息
 func (e *Editor) EraseObjectsPath(page int, ids []string, points []Point) error {
+	region, err := editorEraseRegion(points)
+	if err != nil || region.Empty() {
+		return err
+	}
+	bounds := region.FastBounds()
+	return e.eraseObjects(page, ids, Box{X: bounds.X0, Y: bounds.Y0, W: bounds.W(), H: bounds.H()}, points, region)
+}
+
+// editorEraseRegion 校验闭合折线并按奇偶规则构建擦除区域
+// 入参: points 页面毫米坐标
+// 返回: *canvas.Path 擦除区域, error 错误信息
+func editorEraseRegion(points []Point) (*canvas.Path, error) {
 	if len(points) < 3 {
-		return fmt.Errorf("erase path requires at least three points")
+		return nil, fmt.Errorf("erase path requires at least three points")
 	}
 	region := &canvas.Path{}
 	for i, point := range points {
 		if !finite(point.X) || !finite(point.Y) {
-			return fmt.Errorf("invalid erase path point %d", i)
+			return nil, fmt.Errorf("invalid erase path point %d", i)
 		}
 		if i == 0 {
 			region.MoveTo(point.X, point.Y)
@@ -56,12 +68,62 @@ func (e *Editor) EraseObjectsPath(page int, ids []string, points []Point) error
 		}
 	}
 	region.Close()
-	region = region.Settle(canvas.EvenOdd)
-	if region.Empty() {
-		return nil
+	return region.Settle(canvas.EvenOdd), nil
+}
+
+// EraseCompositeObjects 擦除内部成员与矩形相交的部分，保留原始属性及共享资源
+// 全部覆盖时删除成员，部分覆盖追加标准裁剪，不用于敏感信息脱敏
+// 入参: page 页面索引, path 父路径, indexes 成员序号, box 页面毫米范围
+// 返回: error 错误信息
+func (e *Editor) EraseCompositeObjects(page int, path ObjectPath, indexes []int, box Box) error {
+	if _, err := creationBox(editorBoxString(box)); err != nil {
+		return err
 	}
-	bounds := region.FastBounds()
-	return e.eraseObjects(page, ids, Box{X: bounds.X0, Y: bounds.Y0, W: bounds.W(), H: bounds.H()}, points, region)
+	return e.eraseCompositeObjects(page, path, indexes, canvas.Rectangle(box.W, box.H).Translate(box.X, box.Y))
+}
+
+// EraseCompositeObjectsPath 按闭合折线擦除内部成员，末点自动连接起点
+// 与矩形擦除共用原子提交和撤销逻辑，不用于敏感信息脱敏
+// 入参: page 页面索引, path 父路径, indexes 成员序号, points 页面毫米坐标
+// 返回: error 错误信息
+func (e *Editor) EraseCompositeObjectsPath(page int, path ObjectPath, indexes []int, points []Point) error {
+	region, err := editorEraseRegion(points)
+	if err != nil || region.Empty() {
+		return err
+	}
+	return e.eraseCompositeObjects(page, path, indexes, region)
+}
+
+// eraseCompositeObjects 按页面区域裁剪内部成员，全部成功后提交一次历史
+// 入参: page 页面索引, path 父路径, indexes 成员序号, region 擦除区域
+// 返回: error 错误信息
+func (e *Editor) eraseCompositeObjects(page int, path ObjectPath, indexes []int, region *canvas.Path) error {
+	return e.editCompositeObjects(page, path, indexes, func(_ *Renderer, nodes []*editorCompositeNode, members []CompositeMember) error {
+		for i, node := range nodes {
+			box := members[i].Bounds
+			bounds := canvas.Rectangle(box.W, box.H).Translate(box.X, box.Y)
+			if box.W <= 0 || box.H <= 0 || bounds.And(region).Empty() {
+				continue
+			}
+			if bounds.Not(region).Empty() {
+				node.owner.patches = append(node.owner.patches, editorXMLPatch{node.span.start, node.span.end, nil})
+				continue
+			}
+			if !members[i].Capabilities.Arrange {
+				return fmt.Errorf("composite member cannot be erased")
+			}
+			clips := *editorObjectClips(&node.object)
+			inverse, ok := node.matrix(clips == nil || clips.TransFlag == nil || *clips.TransFlag).Invert()
+			if !ok {
+				return fmt.Errorf("composite clip transform is not invertible")
+			}
+			outer := canvas.Rectangle(box.W+2, box.H+2).Translate(box.X-1, box.Y-1)
+			if err := appendCompositeClip(node, editorClipPath(outer.Not(region)), inverse, false); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
 }
 
 // eraseObjects 按矩形或闭合路径裁剪对象，只在全部对象处理成功后提交修改