feat(字体处理): 优化字体与文案，修复文档隔离

assets/webui/index.html

@@ -57,7 +57,7 @@
 					<option value="300" selected>300 dpi</option>
 					<option value="600">600 dpi</option>
 				</select><span id="dpiValue" aria-hidden="true">300</span></label>
-				<label class="toolbar-select"><select id="outputCompression" class="format-select" title="压缩模式" aria-label="压缩模式" disabled><option value="0">默认</option><option value="1">无损</option><option value="2">轻压</option><option value="3">均衡</option><option value="4">强压</option></select><span id="compressionValue" data-short="默" aria-hidden="true">默认</span></label>
+				<label class="toolbar-select"><select id="outputCompression" class="format-select" title="压缩模式" aria-label="压缩模式" disabled><option value="0">原始</option><option value="1">无损</option><option value="2">轻压</option><option value="3">均衡</option><option value="4">强压</option></select><span id="compressionValue" data-short="原" aria-hidden="true">原始</span></label>
 				<button id="exportPageButton" class="button" type="button" data-short="单" title="导出单页" aria-label="导出单页" disabled>单页</button>
 				<button id="exportButton" class="button" type="button" data-short="多" title="导出文档" aria-label="导出文档" aria-haspopup="dialog" aria-controls="exportPanel" disabled>文档</button>
 			</div>
@@ -184,7 +184,7 @@
 					<button id="convertAdd" class="button" type="button">添加</button><button id="convertClear" class="button" type="button">清空</button>
 					<div class="convert-options">
 						<div class="form-row"><label for="convertFormat">格式</label><select id="convertFormat" required></select></div>
-						<div class="form-row"><label for="convertCompression">压缩</label><select id="convertCompression"><option value="0">默认</option><option value="1">无损</option><option value="2">轻压</option><option value="3">均衡</option><option value="4">强压</option></select></div>
+						<div class="form-row"><label for="convertCompression">压缩</label><select id="convertCompression"><option value="0">原始</option><option value="1">无损</option><option value="2">轻压</option><option value="3">均衡</option><option value="4">强压</option></select></div>
 						<div id="convertFontRow" class="form-row" hidden><label for="convertFontMode">字体</label><select id="convertFontMode"><option value="0">保持</option><option value="1">内嵌</option><option value="2">外部</option></select></div>
 						<div id="convertDPIRow" class="form-row" hidden><label for="convertDPI">精度</label><select id="convertDPI"><option value="96">96 dpi</option><option value="150">150 dpi</option><option value="300" selected>300 dpi</option><option value="600">600 dpi</option></select></div>
 						<div class="form-row"><label for="convertDestination">保存</label><select id="convertDestination"><option value="directory">目录</option><option value="archive">打包</option></select></div>

assets/webui/ofdgo.js

@@ -1381,7 +1381,7 @@ document.addEventListener("selectionchange", syncSelection);
 el.exportFormat.addEventListener("change", () => updateDPIControl());
 el.outputCompression.addEventListener("change", () => {
 	el.compressionValue.textContent = el.outputCompression.selectedOptions[0].textContent;
-	el.compressionValue.dataset.short = ["默", "无", "轻", "均", "强"][Number(el.outputCompression.value)];
+	el.compressionValue.dataset.short = ["原", "无", "轻", "均", "强"][Number(el.outputCompression.value)];
 });
 el.exportPageButton.addEventListener("click", () => exportFile(false));
 el.exportButton.addEventListener("click", () => openExportPanel());

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6
 	github.com/xiaoqidun/j2kgo v0.0.0-20261009063910-4865a21ef893
 	github.com/xiaoqidun/jbig2 v1.1.4
-	github.com/xiaoqidun/pdfgo v0.0.0-20261010014421-57af90cea2c6
+	github.com/xiaoqidun/pdfgo v0.0.0-20261010042215-c8c66c83f031
 	golang.org/x/crypto v0.58.0
 	golang.org/x/image v0.47.0
 	golang.org/x/text v0.43.0

go.sum

@@ -62,8 +62,8 @@ github.com/xiaoqidun/j2kgo v0.0.0-20261009063910-4865a21ef893 h1:jmQlBO7R+bcimOM
 github.com/xiaoqidun/j2kgo v0.0.0-20261009063910-4865a21ef893/go.mod h1:DCwAfuDzCDYqUiAlZ7BDwigTjaXw7o9L1FtEma/D1aA=
 github.com/xiaoqidun/jbig2 v1.1.4 h1:LF6J1si4JY+TszTh9+m4KAg9/ba0JjfXoGtQTQC2S8c=
 github.com/xiaoqidun/jbig2 v1.1.4/go.mod h1:9jromqVwMqlptUDEt6Yip8vqYA5I1YjhG7FgMl/Z2dA=
-github.com/xiaoqidun/pdfgo v0.0.0-20261010014421-57af90cea2c6 h1:APuDHlsRUfDMkV7+ONj2FwRFRGkO+KzbHqBoWh2aG54=
-github.com/xiaoqidun/pdfgo v0.0.0-20261010014421-57af90cea2c6/go.mod h1:fXz1emtF1YCpcIv+fglDZstjkHxjS2l3G4DVMgUzVnk=
+github.com/xiaoqidun/pdfgo v0.0.0-20261010042215-c8c66c83f031 h1:FV9MPGAQ08+AGYMPKesJWl42eLL5TPU+4niOlY1sVTY=
+github.com/xiaoqidun/pdfgo v0.0.0-20261010042215-c8c66c83f031/go.mod h1:fXz1emtF1YCpcIv+fglDZstjkHxjS2l3G4DVMgUzVnk=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/yuin/goldmark v1.8.5 h1:r6N5afV5qj/5S4UTch8agZHJ8UxNCMwX7WjkkJam2NA=

ofdgo_compression.go

@@ -46,13 +46,13 @@ const (
 // outputOptimizationBufferLimit 限制压缩时的单个输出缓冲，单位为字节
 const outputOptimizationBufferLimit = 64 << 20
 
-// CompressionMode 选择默认、无损或有损输出策略
+// CompressionMode 选择原始、无损或有损输出策略
 type CompressionMode = pdfgo.CompressionMode
 
 // CompressionLevel 选择轻压、均衡或强压，仅用于有损模式
 type CompressionLevel = pdfgo.CompressionLevel
 
-// CompressionOptions 配置输出压缩，默认模式沿用现有输出策略，不额外优化
+// CompressionOptions 配置输出压缩，原始模式沿用现有输出策略，不额外优化
 // Quality和MaxDPI为零时按Level使用预设，不改变页面尺寸或整页导出精度
 // 无损表示不引入额外损失，不保证跨格式转换可逆；有损不栅格化文字和矢量
 type CompressionOptions = pdfgo.CompressionOptions

ofdgo_convert.go

@@ -108,7 +108,7 @@ func OutputFormats() []OutputFormat {
 }
 
 // Convert 将PDF或OFD转换为指定格式，不关闭调用方的输入和输出
-// 默认模式完整OFD另存保持源字节；选页和跨格式输出重新生成文档，压缩仅作用于输出副本
+// 原始模式完整OFD另存保持源字节；选页和跨格式输出重新生成文档，压缩仅作用于输出副本
 // 输入按需随机读取，输出分块写出；解析对象及后端可能缓存资源，不保证恒定内存
 // 出错时报告保留已有诊断，调用方应丢弃未完成输出；只有返回nil才表示转换成功
 // 入参: ctx 取消上下文, source 源数据, size 源字节数, output 输出流, options 转换选项

ofdgo_editor_annot_ops.go

@@ -25,6 +25,7 @@ import (
 // 来源修改或删除不影响快照，不用于跨文档传输
 type AnnotationSelection struct {
 	editor    *Editor
+	document  editorDocumentIdentity
 	data      [][]byte
 	resources []string
 	states    map[string]map[string]editorCompositeState
@@ -38,7 +39,7 @@ func (e *Editor) CaptureAnnotations(page int, ids []string) (*AnnotationSelectio
 	if err != nil {
 		return nil, err
 	}
-	selection := &AnnotationSelection{editor: e, states: make(map[string]map[string]editorCompositeState)}
+	selection := &AnnotationSelection{editor: e, document: e.documentIdentity(), states: make(map[string]map[string]editorCompositeState)}
 	seen := make(map[string]bool)
 	for _, id := range ids {
 		if seen[id] {
@@ -73,7 +74,7 @@ func (e *Editor) CaptureAnnotations(page int, ids []string) (*AnnotationSelectio
 // 入参: page 目标页面索引, selection 当前编辑器快照, dx 横向位移，单位为毫米, dy 纵向位移，单位为毫米
 // 返回: []string 新注解标识, error 错误信息
 func (e *Editor) PasteAnnotations(page int, selection *AnnotationSelection, dx, dy float64) ([]string, error) {
-	if selection == nil || selection.editor != e || !finite(dx) || !finite(dy) {
+	if selection == nil || selection.editor != e || !e.documentIdentity().matches(selection.document) || !finite(dx) || !finite(dy) {
 		return nil, fmt.Errorf("invalid annotation selection or offset")
 	}
 	var result []string

ofdgo_editor_composite_copy.go

@@ -27,6 +27,7 @@ import (
 // 父路径的祖先成员增删或排序后需重新捕获，避免使用已失效的序号路径
 type CompositeSelection struct {
 	editor     *Editor
+	document   editorDocumentIdentity
 	page       string
 	path       ObjectPath
 	references int
@@ -70,7 +71,7 @@ func (e *Editor) CaptureCompositeObjects(page int, path ObjectPath, indexes []in
 	slices.Sort(indexes)
 	var owner *editorCompositeNode
 	var container *editorXML
-	selection := &CompositeSelection{editor: e, page: e.pages[page].ID, path: ObjectPath{ID: path.ID, Annotation: path.Annotation, Children: slices.Clone(path.Children)}}
+	selection := &CompositeSelection{editor: e, document: e.documentIdentity(), page: e.pages[page].ID, path: ObjectPath{ID: path.ID, Annotation: path.Annotation, Children: slices.Clone(path.Children)}}
 	if path.Annotation == "" {
 		selection.source = e.objectOrigin(path.ID).page
 	} else if e.source != nil {
@@ -112,8 +113,8 @@ func (e *Editor) CaptureCompositeObjects(page int, path ObjectPath, indexes []in
 // 入参: page 页面索引, path 父复合路径, selection 捕获的快照, dx 页面横向位移, dy 页面纵向位移
 // 返回: []int 新成员序号, error 错误信息
 func (e *Editor) PasteCompositeObjects(page int, path ObjectPath, selection *CompositeSelection, dx, dy float64) ([]int, error) {
-	if selection == nil || selection.editor != e {
-		return nil, fmt.Errorf("composite selection belongs to another editor")
+	if selection == nil || selection.editor != e || !e.documentIdentity().matches(selection.document) {
+		return nil, fmt.Errorf("composite selection belongs to another document or editor")
 	}
 	if !finite(dx) || !finite(dy) {
 		return nil, fmt.Errorf("paste requires finite offsets")
@@ -198,8 +199,8 @@ func (e *Editor) PasteCompositeObjects(page int, path ObjectPath, selection *Com
 // 入参: selection 独立内部快照, paste 目标范围粘贴操作
 // 返回: error 错误信息
 func (e *Editor) pasteCompositeSelection(selection *CompositeSelection, paste func([]GraphicObject) error) (err error) {
-	if selection == nil || selection.editor != e {
-		return fmt.Errorf("composite selection belongs to another editor")
+	if selection == nil || selection.editor != e || !e.documentIdentity().matches(selection.document) {
+		return fmt.Errorf("composite selection belongs to another document or editor")
 	}
 	count, maximum := len(e.resources), e.maxID
 	ready := e.source != nil && e.source.idsReady
@@ -324,7 +325,7 @@ func (e *Editor) pasteCompositeSelection(selection *CompositeSelection, paste fu
 			object.CompositeGraphicUnit.states = maps.Clone(copy.states)
 			copy.object.CompositeGraphicUnit.states = object.CompositeGraphicUnit.states
 		}
-		object.origin = &editorObjectOrigin{editor: e, page: selection.source, data: copy.data, node: copy.node, object: copy.object}
+		object.origin = &editorObjectOrigin{editor: e, document: e.documentIdentity(), page: selection.source, data: copy.data, node: copy.node, object: copy.object}
 		objects = append(objects, object)
 	}
 	return paste(objects)

ofdgo_editor_composite_group.go

@@ -201,7 +201,7 @@ func (e *Editor) ungroupCompositeNode(renderer *Renderer, node *editorCompositeN
 			return fmt.Errorf("group member cannot be expanded")
 		}
 	}
-	return e.pasteCompositeSelection(&CompositeSelection{editor: e, nodes: members}, func(objects []GraphicObject) error {
+	return e.pasteCompositeSelection(&CompositeSelection{editor: e, document: e.documentIdentity(), nodes: members}, func(objects []GraphicObject) error {
 		ids := make(map[string]string)
 		if copy.ref != nil {
 			for _, object := range objects {
@@ -244,7 +244,7 @@ func (e *Editor) ungroupCompositeNode(renderer *Renderer, node *editorCompositeN
 			member.object.state = states[editorObjectID(member.object)]
 			member.object.TextObject.layout = member.object.state.layout
 			member.object.CompositeGraphicUnit.states = states
-			member.object.origin = &editorObjectOrigin{editor: e, data: member.data, node: member.node, object: member.object}
+			member.object.origin = &editorObjectOrigin{editor: e, document: e.documentIdentity(), data: member.data, node: member.node, object: member.object}
 			objects[i] = member.object
 		}
 		return replace(objects)

ofdgo_editor_copy.go

@@ -37,7 +37,7 @@ func (e *Editor) copiedObjectStyle(object GraphicObject, layer string) (GraphicO
 // 返回: *editorObjectOrigin 原文来源
 func (e *Editor) snapshotOrigin(object GraphicObject) *editorObjectOrigin {
 	if object.origin != nil {
-		if object.origin.editor == e || object.origin.page != nil && e.source != nil && e.source.pages[object.origin.page.ref.ID] == object.origin.page {
+		if object.origin.editor == e && e.documentIdentity().matches(object.origin.document) || object.origin.page != nil && e.source != nil && e.source.pages[object.origin.page.ref.ID] == object.origin.page {
 			return object.origin
 		}
 		return nil

ofdgo_editor_documents.go

@@ -27,6 +27,15 @@ import (
 	"strings"
 )
 
+// editorDocumentIdentity 标记编辑状态所属的文档，不持有页面或资源数据
+type editorDocumentIdentity struct {
+	root    string
+	id      string
+	fresh   bool
+	single  bool
+	fromNew bool
+}
+
 // DocumentCount 获取编辑包内的文档数量，新建编辑器包含一个当前文档
 // 返回: int 文档数量
 func (e *Editor) DocumentCount() int {
@@ -329,15 +338,31 @@ func (e *Editor) documentRoot() string {
 // 入参: other 编辑快照
 // 返回: bool 是否为同一文档
 func (e *Editor) sameDocument(other *Editor) bool {
-	if e.source == nil || other.source == nil {
-		if e.source == nil && other.source == nil {
+	return e.documentIdentity().matches(other.documentIdentity())
+}
+
+// documentIdentity 获取当前文档的入口与原始标识，文档排序不改变身份
+// 返回: editorDocumentIdentity 文档身份
+func (e *Editor) documentIdentity() editorDocumentIdentity {
+	if e.source == nil {
+		return editorDocumentIdentity{id: e.Info.DocID, fresh: true}
+	}
+	return editorDocumentIdentity{root: e.documentRoot(), id: e.source.info.DocID, single: e.DocumentCount() == 1, fromNew: e.source.fromNew}
+}
+
+// matches 判断两个编辑状态是否属于同一文档，允许新文档首次建立包结构
+// 入参: other 另一编辑状态的文档身份
+// 返回: bool 是否为同一文档
+func (identity editorDocumentIdentity) matches(other editorDocumentIdentity) bool {
+	if identity.fresh || other.fresh {
+		if identity.fresh && other.fresh {
 			return true
 		}
-		fresh, packaged := e, other
-		if fresh.source != nil {
-			fresh, packaged = other, e
+		fresh, packaged := identity, other
+		if !fresh.fresh {
+			fresh, packaged = other, identity
 		}
-		return len(packaged.source.reader.OFD.DocBody) == 1 && (packaged.source.fromNew || fresh.Info.DocID != "" && fresh.Info.DocID == packaged.source.info.DocID)
+		return packaged.single && (packaged.fromNew || fresh.id != "" && fresh.id == packaged.id)
 	}
-	return e.documentRoot() == other.documentRoot() && e.source.info.DocID == other.source.info.DocID
+	return identity.root == other.root && identity.id == other.id
 }

ofdgo_editor_font_binding.go

@@ -91,6 +91,11 @@ func (e *Editor) changeFont(ctx context.Context, id string, mode FontMode, file
 	if err != nil || !changed {
 		return err
 	}
+	if mode == FontExternal {
+		if err := pruneExternalFontFiles(ctx, reader, scan.fonts[editorResourceID(id)].location); err != nil {
+			return err
+		}
+	}
 	return e.commitFontSnapshot(ctx, reader)
 }
 
@@ -133,6 +138,7 @@ func (e *Editor) ProcessFontsWithOptions(ctx context.Context, options FontProces
 		return nil, err
 	}
 	var report []FontChange
+	var externalFiles []string
 	changed := false
 	for document := range reader.DocumentCount() {
 		if err := progress("scan", document, reader.DocumentCount()); err != nil {
@@ -172,6 +178,9 @@ func (e *Editor) ProcessFontsWithOptions(ctx context.Context, options FontProces
 			}
 			if item.Changed {
 				changed = true
+				if mode == FontExternal {
+					externalFiles = append(externalFiles, declaration.location)
+				}
 				scan, err = scanEditorFonts(ctx, reader, document)
 				if err != nil {
 					return nil, err
@@ -186,6 +195,9 @@ func (e *Editor) ProcessFontsWithOptions(ctx context.Context, options FontProces
 		if err := progress("commit", 0, 1); err != nil {
 			return nil, err
 		}
+		if err := pruneExternalFontFiles(ctx, reader, externalFiles...); err != nil {
+			return nil, err
+		}
 		err = e.commitFontSnapshot(ctx, reader)
 	}
 	return report, err
@@ -343,11 +355,6 @@ func (e *Editor) changeFontSnapshot(ctx context.Context, scan *editorFontDocumen
 	if err := working.initRoot(); err != nil {
 		return false, err
 	}
-	if mode == FontExternal {
-		if err := pruneExternalFontFiles(ctx, &working, declaration.location); err != nil {
-			return false, err
-		}
-	}
 	*scan.reader = working
 	return true, nil
 }
@@ -502,6 +509,9 @@ func (e *Editor) commitFontSnapshot(ctx context.Context, reader *Reader) error {
 	if err != nil {
 		return err
 	}
+	if err := ctx.Err(); err != nil {
+		return err
+	}
 	before := e.transactionSnapshot()
 	e.restoreFontSnapshot(*next)
 	if change := e.recordChange(); change != nil {
@@ -525,11 +535,22 @@ func (e *Editor) restoreFontSnapshot(state Editor) {
 	*e = state
 }
 
-// pruneExternalFontFiles 保留全包仍引用的字体，未确认的扩展引用使清理保持保守
-// 入参: ctx 取消上下文, reader 包快照, candidate 原字体路径
+// pruneExternalFontFiles 清理全包不再引用的字体文件，遇到无法识别的扩展时保留资源
+// 入参: ctx 取消上下文, reader 包快照, candidates 待清理的字体路径
 // 返回: error 取消或读取错误
-func pruneExternalFontFiles(ctx context.Context, reader *Reader, candidate string) error {
-	used := make(map[string]bool)
+func pruneExternalFontFiles(ctx context.Context, reader *Reader, candidates ...string) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	removed := make(map[string]bool, len(candidates))
+	for _, candidate := range candidates {
+		if key := strings.ToLower(cleanPackagePath(candidate)); key != "" {
+			removed[key] = true
+		}
+	}
+	if len(removed) == 0 {
+		return nil
+	}
 	for i := range reader.DocumentCount() {
 		files, err := reader.documentFiles(ctx, i)
 		if err != nil {
@@ -538,13 +559,13 @@ func pruneExternalFontFiles(ctx context.Context, reader *Reader, candidate strin
 			}
 			return nil
 		}
-		maps.Copy(used, files)
+		for name := range files {
+			delete(removed, name)
 		}
-	removed := make(map[string]bool)
-	key := strings.ToLower(cleanPackagePath(candidate))
-	if used[key] {
+		if len(removed) == 0 {
 			return nil
 		}
+	}
 	for _, name := range reader.fileNamesFold {
 		if err := ctx.Err(); err != nil {
 			return err
@@ -574,20 +595,21 @@ func pruneExternalFontFiles(ctx context.Context, reader *Reader, candidate strin
 					return true
 				}
 			}
-			if node.matchesOFD("FontFile") && strings.EqualFold(resolveResourcePath(name, base, strings.TrimSpace(editorImportText(data, node))), candidate) {
-				return true
+			if node.matchesOFD("FontFile") {
+				location := resolveResourcePath(name, base, strings.TrimSpace(editorImportText(data, node)))
+				delete(removed, strings.ToLower(cleanPackagePath(location)))
 			}
 			return slices.ContainsFunc(node.children, retains)
 		}
-		if retains(root) {
+		if retains(root) || len(removed) == 0 {
 			return nil
 		}
 	}
-	if !used[key] {
-		removed[key] = true
+	if err := ctx.Err(); err != nil {
+		return err
 	}
 	for name := range reader.files {
-		if removed[strings.ToLower(name)] {
+		if removed[strings.ToLower(cleanPackagePath(name))] {
 			delete(reader.files, name)
 		}
 	}

ofdgo_editor_import.go

@@ -216,7 +216,7 @@ func (e *Editor) ImportObjects(source *Editor, sourcePage int, ids []string, pag
 			imported[i].TextObject.layout = objects[i].TextObject.layout
 			imported[i].state = objects[i].state
 			imported[i].CompositeGraphicUnit.states = remapCompositeStates(objects[i].CompositeGraphicUnit.states, migration.ids)
-			imported[i].origin = &editorObjectOrigin{editor: editor, data: data, node: root.child("Layer").children[0], object: object}
+			imported[i].origin = &editorObjectOrigin{editor: editor, document: editor.documentIdentity(), data: data, node: root.child("Layer").children[0], object: object}
 		}
 		copied, err = editor.CopyObjects(page, imported, options.DX, options.DY)
 		return err

ofdgo_editor_open.go

@@ -48,6 +48,7 @@ type editorSource struct {
 // editorObjectOrigin 保留原对象的XML语义，供复制和局部更新复用
 type editorObjectOrigin struct {
 	editor   *Editor
+	document editorDocumentIdentity
 	page     *editorSourcePage
 	data     []byte
 	node     *editorXML
@@ -613,6 +614,7 @@ func (e *Editor) setObjectOrigin(id string, origin *editorObjectOrigin) {
 	if origin != nil && origin.page == nil && origin.editor == nil {
 		copy := *origin
 		copy.editor = e
+		copy.document = e.documentIdentity()
 		origin = &copy
 	}
 	e.origins[id] = origin

ofdgo_editor_selection_copy.go

@@ -20,6 +20,7 @@ import "fmt"
 // 来源修改、删除或撤销不改变快照，不用于跨文档传输
 type ObjectSelection struct {
 	editor      *Editor
+	document    editorDocumentIdentity
 	objects     []GraphicObject
 	annotations *AnnotationSelection
 }
@@ -32,7 +33,7 @@ func (e *Editor) CaptureSelection(page int, objects, annotations []string) (*Obj
 	if err != nil {
 		return nil, err
 	}
-	selection := &ObjectSelection{editor: e, objects: items}
+	selection := &ObjectSelection{editor: e, document: e.documentIdentity(), objects: items}
 	if len(annotations) != 0 {
 		selection.annotations, err = e.CaptureAnnotations(page, annotations)
 		if err != nil {
@@ -46,7 +47,7 @@ func (e *Editor) CaptureSelection(page int, objects, annotations []string) (*Obj
 // 入参: page 目标页面索引, selection 当前编辑器快照, dx 横向位移，单位为毫米, dy 纵向位移，单位为毫米
 // 返回: []string 新正文标识, []string 新注解标识, error 标识、资源或编辑错误
 func (e *Editor) PasteSelection(page int, selection *ObjectSelection, dx, dy float64) ([]string, []string, error) {
-	if selection == nil || selection.editor != e || !finite(dx) || !finite(dy) {
+	if selection == nil || selection.editor != e || !e.documentIdentity().matches(selection.document) || !finite(dx) || !finite(dy) {
 		return nil, nil, fmt.Errorf("invalid object selection or offset")
 	}
 	var objects, annotations []string
@@ -68,8 +69,8 @@ func (e *Editor) PasteSelection(page int, selection *ObjectSelection, dx, dy flo
 // 入参: page 目标页面索引, path 父复合路径, selection 当前编辑器快照, dx 横向位移，单位为毫米, dy 纵向位移，单位为毫米
 // 返回: []int 新成员序号, error 选区、资源或编辑错误
 func (e *Editor) PasteSelectionToComposite(page int, path ObjectPath, selection *ObjectSelection, dx, dy float64) ([]int, error) {
-	if selection == nil || selection.editor != e {
-		return nil, fmt.Errorf("object selection belongs to another editor")
+	if selection == nil || selection.editor != e || !e.documentIdentity().matches(selection.document) {
+		return nil, fmt.Errorf("object selection belongs to another document or editor")
 	}
 	if selection.annotations != nil {
 		return nil, fmt.Errorf("annotations cannot be nested in a page object")

ofdgo_editor_style.go

@@ -207,7 +207,7 @@ func (e *Editor) SetObjectDrawParam(page int, ids []string, id string) error {
 		if err != nil {
 			return err
 		}
-		updated := &editorObjectOrigin{editor: e, data: data, node: root, object: next}
+		updated := &editorObjectOrigin{editor: e, document: e.documentIdentity(), data: data, node: root, object: next}
 		if origin != nil {
 			updated.page, root.parent = origin.page, origin.node.parent
 		} else {

ofdgo_pdf.go

@@ -37,7 +37,7 @@ var ErrPDFPassword = pdfgo.ErrPassword
 // ResolveFile读取PDF引用的外部媒体、附件和页面，默认不访问网络或本地路径
 // ResolveReference可提供已解密的引用页面，目标阅读器由调用方维护
 // Halftones提供只读设备命名网屏，所属阅读器由调用方维护，连续色调输出不网屏化
-// Compression配置转换输出，有损模式按图片实际尺寸降采样，默认及无损保持完整采样
+// Compression配置转换输出，有损模式按图片实际尺寸降采样，原始及无损模式保持完整采样
 type PDFImportOptions struct {
 	Password         []byte
 	PasswordUTF8     bool