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@@ -53,6 +53,146 @@ func (e *Editor) PasteCompositeSelection(page int, selection *CompositeSelection
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return result, err
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}
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// CaptureCompositeObjects 捕获内部选区，不修改文档或分配资源
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// 入参: page 页面索引, path 父复合路径, indexes 同一容器的成员序号
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// 返回: *CompositeSelection 独立快照, error 错误信息
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func (e *Editor) CaptureCompositeObjects(page int, path ObjectPath, indexes []int) (*CompositeSelection, error) {
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reader, _, root, nodes, err := e.compositeScope(page, path)
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if err != nil {
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return nil, err
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}
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defer reader.Close()
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if len(indexes) == 0 {
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return nil, fmt.Errorf("composite selection is empty")
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}
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indexes = slices.Clone(indexes)
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slices.Sort(indexes)
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var owner *editorCompositeNode
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var container *editorXML
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selection := &CompositeSelection{editor: e, page: e.pages[page].ID, path: ObjectPath{ID: path.ID, Annotation: path.Annotation, Children: slices.Clone(path.Children)}}
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if path.Annotation == "" {
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selection.source = e.objectOrigin(path.ID).page
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} else if e.source != nil {
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selection.source = e.source.pages[e.pages[page].ID]
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}
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for j, i := range indexes {
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if i < 0 || i >= len(nodes) || j > 0 && indexes[j-1] == i {
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return nil, fmt.Errorf("invalid composite copy selection")
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}
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node := nodes[i]
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if !node.transformable() || !editorXMLCopyable(node.node) {
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return nil, fmt.Errorf("composite member cannot be copied")
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}
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if j == 0 {
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owner, container = node.owner, node.span.parent
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} else if node.span.parent != container {
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return nil, fmt.Errorf("copy requires members in the same container")
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}
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copy := *node
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copy.owner, copy.span = nil, nil
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selection.nodes = append(selection.nodes, ©)
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}
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scope := root.loadedScope(path.Children)
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for scope != owner {
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scope = scope.ref
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selection.references++
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}
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for node := container; node != owner.node; node = node.parent {
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containers := compositeContainers(node.parent)
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selection.containers = append(selection.containers, slices.Index(containers, node))
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}
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slices.Reverse(selection.containers)
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return selection, nil
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}
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// PasteCompositeObjects 将快照粘贴至内部范围末尾，不依赖源成员当前的序号或存在性
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// 同范围沿用原容器和当前继承样式，跨范围固定对象的源外观，位移使用页面毫米
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// 目标范围的父透明度及裁剪仍作用于新成员，全部成员提交一次撤销记录
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// 入参: page 页面索引, path 父复合路径, selection 捕获的快照, dx、dy 页面位移
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// 返回: []int 新成员序号, error 错误信息
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func (e *Editor) PasteCompositeObjects(page int, path ObjectPath, selection *CompositeSelection, dx, dy float64) ([]int, error) {
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if selection == nil || selection.editor != e {
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return nil, fmt.Errorf("composite selection belongs to another editor")
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}
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if !finite(dx) || !finite(dy) {
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return nil, fmt.Errorf("paste requires finite offsets")
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}
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if _, err := e.page(page); err != nil {
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return nil, err
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}
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if e.pages[page].ID != selection.page || path.ID != selection.path.ID || path.Annotation != selection.path.Annotation || !slices.Equal(path.Children, selection.path.Children) {
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var result []int
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err := e.pasteCompositeSelection(selection, func(objects []GraphicObject) error {
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var err error
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result, err = e.CopyObjectsToComposite(page, path, objects, dx, dy)
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return err
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})
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return result, err
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}
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var result []int
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err := e.editCompositeScope(page, path, func(renderer *Renderer, root *editorCompositeNode, _ []*editorCompositeNode) error {
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scope := root.loadedScope(path.Children)
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owner := scope
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for i := 0; i < selection.references; i++ {
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owner = owner.ref
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if owner == nil {
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return fmt.Errorf("composite resource container no longer exists")
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}
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}
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container := owner.node
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for _, index := range selection.containers {
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containers := compositeContainers(container)
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if index >= len(containers) {
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return fmt.Errorf("composite page block no longer exists")
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}
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container = containers[index]
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}
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box, _ := ParseBox(owner.object.CompositeGraphicUnit.Boundary)
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parent := owner.parent.Multiply(TranslationMatrix(box.X, box.Y)).Multiply(NewMatrix(owner.object.CompositeGraphicUnit.CTM))
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nodes := make([]*editorCompositeNode, len(selection.nodes))
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for i, node := range selection.nodes {
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copy := *node
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copy.parent, copy.boundaryInCTM = parent, owner.boundaryInCTM
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nodes[i] = ©
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}
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data, states, err := e.copyCompositeNodes(renderer, nodes, dx, dy)
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if err != nil {
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return err
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}
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maps.Copy(owner.states, states)
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next, reached := 0, false
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var count func(*editorCompositeNode)
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count = func(node *editorCompositeNode) {
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if node.ref != nil {
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count(node.ref)
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}
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if reached {
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return
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}
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for _, child := range node.children {
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if node != owner || child.span.start < container.close {
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next++
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}
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}
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reached = node == owner
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}
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count(scope)
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patch := editorXMLPatch{container.close, container.close, data}
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if container.open == container.end {
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patch = editorXMLContent(owner.data, container, data)
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}
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owner.patches = append(owner.patches, patch)
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for i := range nodes {
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result = append(result, next+i)
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return result, nil
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}
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// pasteCompositeSelection 固定内部快照的页面几何和外观，粘贴失败时回收新增绘制资源
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// 入参: selection 独立内部快照, paste 目标范围粘贴操作
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// 返回: error 错误信息
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@@ -224,146 +364,6 @@ func (n *editorCompositeNode) convertCoordinates(parent Matrix, inward bool) err
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return nil
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}
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// CaptureCompositeObjects 捕获内部选区，不修改文档或分配资源
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// 入参: page 页面索引, path 父复合路径, indexes 同一容器的成员序号
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// 返回: *CompositeSelection 独立快照, error 错误信息
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func (e *Editor) CaptureCompositeObjects(page int, path ObjectPath, indexes []int) (*CompositeSelection, error) {
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reader, _, root, nodes, err := e.compositeScope(page, path)
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if err != nil {
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return nil, err
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}
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defer reader.Close()
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if len(indexes) == 0 {
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return nil, fmt.Errorf("composite selection is empty")
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}
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indexes = slices.Clone(indexes)
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slices.Sort(indexes)
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var owner *editorCompositeNode
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var container *editorXML
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selection := &CompositeSelection{editor: e, page: e.pages[page].ID, path: ObjectPath{ID: path.ID, Annotation: path.Annotation, Children: slices.Clone(path.Children)}}
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if path.Annotation == "" {
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selection.source = e.objectOrigin(path.ID).page
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} else if e.source != nil {
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selection.source = e.source.pages[e.pages[page].ID]
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}
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for j, i := range indexes {
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if i < 0 || i >= len(nodes) || j > 0 && indexes[j-1] == i {
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return nil, fmt.Errorf("invalid composite copy selection")
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}
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node := nodes[i]
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if !node.transformable() || !editorXMLCopyable(node.node) {
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return nil, fmt.Errorf("composite member cannot be copied")
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}
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if j == 0 {
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owner, container = node.owner, node.span.parent
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} else if node.span.parent != container {
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return nil, fmt.Errorf("copy requires members in the same container")
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}
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copy := *node
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copy.owner, copy.span = nil, nil
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selection.nodes = append(selection.nodes, ©)
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}
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scope := root.loadedScope(path.Children)
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for scope != owner {
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scope = scope.ref
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selection.references++
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}
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for node := container; node != owner.node; node = node.parent {
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containers := compositeContainers(node.parent)
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selection.containers = append(selection.containers, slices.Index(containers, node))
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}
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slices.Reverse(selection.containers)
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return selection, nil
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}
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// PasteCompositeObjects 将快照粘贴至内部范围末尾，不依赖源成员当前的序号或存在性
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// 同范围沿用原容器和当前继承样式，跨范围固定对象的源外观，位移使用页面毫米
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// 目标范围的父透明度及裁剪仍作用于新成员，全部成员提交一次撤销记录
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// 入参: page 页面索引, path 父复合路径, selection 捕获的快照, dx、dy 页面位移
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// 返回: []int 新成员序号, error 错误信息
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func (e *Editor) PasteCompositeObjects(page int, path ObjectPath, selection *CompositeSelection, dx, dy float64) ([]int, error) {
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if selection == nil || selection.editor != e {
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return nil, fmt.Errorf("composite selection belongs to another editor")
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}
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if !finite(dx) || !finite(dy) {
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return nil, fmt.Errorf("paste requires finite offsets")
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}
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if _, err := e.page(page); err != nil {
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return nil, err
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}
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if e.pages[page].ID != selection.page || path.ID != selection.path.ID || path.Annotation != selection.path.Annotation || !slices.Equal(path.Children, selection.path.Children) {
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var result []int
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err := e.pasteCompositeSelection(selection, func(objects []GraphicObject) error {
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var err error
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result, err = e.CopyObjectsToComposite(page, path, objects, dx, dy)
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return err
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})
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return result, err
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}
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var result []int
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err := e.editCompositeScope(page, path, func(renderer *Renderer, root *editorCompositeNode, _ []*editorCompositeNode) error {
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scope := root.loadedScope(path.Children)
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owner := scope
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for i := 0; i < selection.references; i++ {
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owner = owner.ref
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if owner == nil {
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return fmt.Errorf("composite resource container no longer exists")
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}
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}
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container := owner.node
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for _, index := range selection.containers {
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containers := compositeContainers(container)
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if index >= len(containers) {
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return fmt.Errorf("composite page block no longer exists")
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}
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container = containers[index]
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}
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box, _ := ParseBox(owner.object.CompositeGraphicUnit.Boundary)
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parent := owner.parent.Multiply(TranslationMatrix(box.X, box.Y)).Multiply(NewMatrix(owner.object.CompositeGraphicUnit.CTM))
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nodes := make([]*editorCompositeNode, len(selection.nodes))
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for i, node := range selection.nodes {
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copy := *node
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copy.parent, copy.boundaryInCTM = parent, owner.boundaryInCTM
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nodes[i] = ©
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}
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data, states, err := e.copyCompositeNodes(renderer, nodes, dx, dy)
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if err != nil {
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return err
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}
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maps.Copy(owner.states, states)
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next, reached := 0, false
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var count func(*editorCompositeNode)
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count = func(node *editorCompositeNode) {
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if node.ref != nil {
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count(node.ref)
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}
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if reached {
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return
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}
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for _, child := range node.children {
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if node != owner || child.span.start < container.close {
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next++
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}
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}
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reached = node == owner
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}
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count(scope)
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patch := editorXMLPatch{container.close, container.close, data}
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if container.open == container.end {
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patch = editorXMLContent(owner.data, container, data)
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}
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owner.patches = append(owner.patches, patch)
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for i := range nodes {
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result = append(result, next+i)
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return result, nil
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}
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// loadedScope 获取已由compositeScope展开并校验的范围
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// 入参: path 逐层成员序号
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// 返回: *editorCompositeNode 范围节点
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