feat(渲染转换): 完善字体转换与链接动作

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/tdewolff/canvas v0.0.0-20260923214215-09804640d00c
 	github.com/tdewolff/font v0.0.0-20260913163313-54f98bb59ee6
 	github.com/xiaoqidun/jbig2 v1.1.1
-	github.com/xiaoqidun/pdfgo v0.0.0-20261002064448-3200323fdecb
+	github.com/xiaoqidun/pdfgo v0.0.0-20261002153346-125ae06f23bf
 	golang.org/x/crypto v0.57.0
 	golang.org/x/image v0.46.0
 	golang.org/x/text v0.42.0

go.sum

@@ -62,8 +62,8 @@ github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
 github.com/tdewolff/test v1.0.12/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
 github.com/xiaoqidun/jbig2 v1.1.1 h1:SjliS9ZO0e9HX5oYUfBuXrfFsXhWricrSz+XY4zORDI=
 github.com/xiaoqidun/jbig2 v1.1.1/go.mod h1:8QonVWtENmh2kc6l+leqeGl7psb79DWlHDkCpdChjfQ=
-github.com/xiaoqidun/pdfgo v0.0.0-20261002064448-3200323fdecb h1:m/ESRIQE2ssRP/bHwrJvffIz1t+QYDMzL1B2fsHI7jc=
-github.com/xiaoqidun/pdfgo v0.0.0-20261002064448-3200323fdecb/go.mod h1:4Pf0JO0BEf1uzRY+uZjlMjN/OPn3PYa0YMi6cqPPTLQ=
+github.com/xiaoqidun/pdfgo v0.0.0-20261002153346-125ae06f23bf h1:AjfoqpGGjeyWFH1ikxmZJ9n+hG1Qaqolaqlv9kGX91w=
+github.com/xiaoqidun/pdfgo v0.0.0-20261002153346-125ae06f23bf/go.mod h1:4Pf0JO0BEf1uzRY+uZjlMjN/OPn3PYa0YMi6cqPPTLQ=
 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=

internal/webui/wasm.go

@@ -834,6 +834,7 @@ func renderPage(args []js.Value) (any, error) {
 	for i, link := range page.Links {
 		item := map[string]any{
 			"uri":    link.URI,
+			"target": link.Target,
 			"path":   link.Path,
 			"group":  link.Group,
 			"x":      link.Box.X,
@@ -1447,6 +1448,7 @@ func readAnnotation(args []js.Value) (any, error) {
 		link, err := currentEditor.AnnotationLink(args[0].Int(), annotation.ID)
 		if err == nil && link.URI != nil {
 			info["linkKind"], info["linkURI"], info["linkBase"] = "uri", link.URI.URI, link.URI.Base
+			info["linkTarget"] = link.URI.Target
 		} else if err == nil && link.Goto != nil && link.Goto.Dest != nil {
 			for i, page := range currentSession.doc.Pages.Page {
 				if page.ID == link.Goto.Dest.PageID {
@@ -1516,6 +1518,15 @@ func writeAnnotation(args []js.Value) (any, error) {
 			target = ofdgo.AnnotationLink{Dest: &ofdgo.Dest{Type: "Fit", PageID: page.ID}}
 		}
 		if options.Kind == "link" && options.ID != "" {
+			if target.URI != nil {
+				previous, err := currentEditor.AnnotationLink(page, options.ID)
+				if err != nil {
+					return err
+				}
+				if previous.URI != nil {
+					target.URI.Target = previous.URI.Target
+				}
+			}
 			return currentEditor.UpdateAnnotationLink(page, options.ID, target)
 		}
 		if options.Width <= 0 || options.Height <= 0 || options.Alpha < 0 || options.Alpha > 255 {

ofdgo_action.go

@@ -57,19 +57,24 @@ type GotoBookmark struct {
 }
 
 // URI URI动作
+// Target保留Schema属性，不推断窗口语义
 type URI struct {
-	URI  string `xml:"URI,attr"`
-	Base string `xml:"Base,attr"`
+	URI    string `xml:"URI,attr"`
+	Base   string `xml:"Base,attr"`
+	Target string `xml:"Target,attr,omitempty"`
 }
 
 // PageLink 页面点击动作，包含外链、跳转、附件和音视频播放
 // Box使用页面毫米坐标，Path为可选的页面坐标SVG路径，存在时作为精确点击区域
 // 同一来源的多个动作共享非零Group，组内按返回顺序执行
+// NewWindow用于附件动作，为空时采用OFD默认的新窗口
 type PageLink struct {
 	URI        string
+	Target     string
 	Box        Box
 	Dest       *Dest
 	Attachment string
+	NewWindow  *bool
 	Path       string
 	Group      int
 	Sound      *Sound

ofdgo_editor_link.go

@@ -229,7 +229,7 @@ func (e *Editor) UpdateAnnotationLink(page int, id string, target AnnotationLink
 			} else {
 				var check func(*editorXML) bool
 				check = func(node *editorXML) bool {
-					allowed := map[string]string{"URI": "URI Base", "Goto": "", "Dest": "Type PageID Left Right Top Bottom Zoom", "Bookmark": "Name"}
+					allowed := map[string]string{"URI": "URI Base Target", "Goto": "", "Dest": "Type PageID Left Right Top Bottom Zoom", "Bookmark": "Name"}
 					attrs, known := allowed[node.name.Local]
 					if !known || node.name.Space != root.name.Space || !editorXMLAttributes(node, attrs) {
 						return false
@@ -387,6 +387,7 @@ func annotationLinkXML(target AnnotationLink) ([]byte, error) {
 	if target.URI != nil {
 		attrs := ofdAttrs{{Name: xml.Name{Local: "URI"}, Value: target.URI.URI}}
 		attrs.add("Base", target.URI.Base)
+		attrs.add("Target", target.URI.Target)
 		data, err = editorXMLContainer("URI", attrs, nil)
 	} else {
 		dest := target.Dest

ofdgo_font_type1.go

@@ -147,6 +147,10 @@ func parseType1Program(data []byte) (type1Program, error) {
 			section = "subrs"
 		case "/CharStrings":
 			section = "glyphs"
+		case "def", "ND", "|-":
+			if section == "subrs" {
+				section = ""
+			}
 		case "dup":
 			if section != "subrs" {
 				continue

ofdgo_image_metadata.go

@@ -114,7 +114,6 @@ func imagePageMetadata(data []byte, format string, dpi float64) (imagePageInfo,
 			return info, err
 		}
 		info.orientation = orientation
-		// PNG的物理尺寸由pHYs定义，EXIF只用于方向。
 		if format == "jpeg" && x > 0 && y > 0 {
 			info.xdpi, info.ydpi = x, y
 		}

ofdgo_pdf.go

@@ -70,13 +70,14 @@ type pdfImporter struct {
 	fontIDs          map[*pdfgo.Font]string
 	fonts            map[*pdfgo.Font]*pdfImportedFont
 	fontWarnings     map[string]bool
-	clipTexts        map[*pdfgo.TextClip]TextObject
+	clipTexts        map[*pdfgo.TextClip][]TextObject
 	cmykSpace        string
 	objects          []GraphicObject
 	pages            map[pdfgo.Reference]*pdfgo.Page
 	pageIDs          map[pdfgo.Reference]string
 	pageIndexes      map[pdfgo.Reference]int
 	imageIDs         map[pdfImageKey]string
+	attachmentIDs    map[pdfAttachmentKey]string
 	maskClips        map[*pdfgo.SoftMask]pdfgo.Path
 	pageBox          pdfgo.Rectangle
 	pageWidth        float64
@@ -187,7 +188,7 @@ func ImportPDF(ctx context.Context, source io.ReaderAt, size int64, options PDFI
 		importer.compositeCache = nil
 		importer.compositeNodes = nil
 		importer.compositeSpace = nil
-		importer.clipTexts = make(map[*pdfgo.TextClip]TextObject)
+		importer.clipTexts = make(map[*pdfgo.TextClip][]TextObject)
 		importer.annotationData = nil
 		if err := importer.compositePage(nil, func(visitor pdfgo.Visitor) error { return reader.WalkPage(ctx, page, visitor) }); err != nil {
 			return fmt.Errorf("import PDF page %d: %w", index+1, err)
@@ -387,25 +388,28 @@ func (p *pdfImporter) clips(paths []pdfgo.Path, origin Box) (*Clips, error) {
 			area.Path = append(area.Path, PathObject{Boundary: pdfBoundary(Box{box.X - origin.X, box.Y - origin.Y, box.W, box.H}), AbbreviatedData: p.pathData(path, box), Rule: rule})
 		}
 		for _, mark := range path.Text {
-			object, ok := p.clipTexts[mark]
+			objects, ok := p.clipTexts[mark]
 			if !ok {
 				if err := p.flushPath(); err != nil {
 					return nil, err
 				}
 				count := len(p.objects)
+				textCount := p.report.TextObjects
 				if err := p.text(pdfgo.TextMark{Font: mark.Font, Glyphs: mark.Glyphs, Positions: mark.Positions, Matrix: mark.Matrix, Size: mark.Size, HorizontalScale: mark.HorizontalScale, Mode: 7, Clip: mark, Style: pdfgo.Style{Fill: pdfgo.Paint{Alpha: 1}}}); err != nil {
 					return nil, err
 				}
 				p.objects = p.objects[:count]
-				p.report.TextObjects--
-				object = p.clipTexts[mark]
+				p.report.TextObjects = textCount
+				objects = p.clipTexts[mark]
 			}
-			box, err := ParseBox(object.Boundary)
-			if err != nil {
-				return nil, err
+			for _, object := range objects {
+				box, err := ParseBox(object.Boundary)
+				if err != nil {
+					return nil, err
+				}
+				object.Boundary = pdfBoundary(Box{box.X - origin.X, box.Y - origin.Y, box.W, box.H})
+				area.Text = append(area.Text, object)
 			}
-			object.Boundary = pdfBoundary(Box{box.X - origin.X, box.Y - origin.Y, box.W, box.H})
-			area.Text = append(area.Text, object)
 		}
 		clips.Clip = append(clips.Clip, Clip{Area: []ClipArea{area}})
 	}

ofdgo_pdf_annot.go

@@ -75,7 +75,7 @@ func (p *pdfImporter) appearanceAnnotation(ctx context.Context, page *pdfgo.Page
 	stamp.pendingPath = nil
 	stamp.report = PDFImportReport{}
 	stamp.compositeCache = nil
-	stamp.clipTexts = make(map[*pdfgo.TextClip]TextObject)
+	stamp.clipTexts = make(map[*pdfgo.TextClip][]TextObject)
 	stamp.pageWidth, stamp.pageHeight = box.W, box.H
 	nodes, err := p.collectCompositeNodes(func(visitor pdfgo.Visitor) error {
 		if annotation.Subtype == "Widget" {

ofdgo_pdf_link.go

@@ -120,27 +120,15 @@ func (p *pdfImporter) annotations(ctx context.Context, page *pdfgo.Page, strict
 			if err != nil {
 				return err
 			}
-			var data []byte
-			format := "WAV"
-			if sound.File != nil {
-				var available bool
-				data, available, err = p.mediaData(ctx, *sound.File)
-				if err == nil && !available {
-					if err := p.appearanceAnnotation(ctx, page, annotation); err != nil {
-						return err
-					}
-					continue
+			id, err := p.soundResource(ctx, sound)
+			if err != nil {
+				return err
+			}
+			if id == "" {
+				if err := p.appearanceAnnotation(ctx, page, annotation); err != nil {
+					return err
 				}
-				format = pdfMediaFormat(*sound.File)
-			} else {
-				data, err = pdfSoundWAV(sound)
-			}
-			if err != nil {
-				return err
-			}
-			id, err := p.editor.AddMedia("Audio", format, data)
-			if err != nil {
-				return err
+				continue
 			}
 			if err := p.appearanceAnnotation(ctx, page, annotation, Action{Event: "CLICK", Sound: &Sound{ResourceID: id}}); err != nil {
 				return err
@@ -180,7 +168,7 @@ func (p *pdfImporter) annotations(ctx context.Context, page *pdfgo.Page, strict
 				}
 				continue
 			}
-			id, err := p.editor.AddAttachment(file.Name, data)
+			id, err := p.attachmentFile(file.Name, data)
 			if err != nil {
 				return err
 			}
@@ -340,14 +328,31 @@ func (p *pdfImporter) linkAction(annotation pdfgo.Annotation, strict bool, curre
 		if !ok {
 			return nil, fmt.Errorf("invalid PDF link action")
 		}
-		switch a["S"] {
+		kind, err := p.reader.Resolve(a["S"])
+		if err != nil {
+			return nil, err
+		}
+		switch kind {
 		case pdfgo.Name("GoTo"):
 			target = a["D"]
+		case pdfgo.Name("GoToR"):
+			return p.remoteLinkAction(a, strict)
+		case pdfgo.Name("Sound"):
+			return p.soundLinkAction(a, strict)
+		case pdfgo.Name("GoToE"):
+			converted, local, err := p.embeddedLinkAction(a, strict)
+			if err != nil || local == nil {
+				return converted, err
+			}
+			target = local
 		case pdfgo.Name("Named"):
 			value, err := p.reader.Resolve(a["N"])
 			if err != nil {
 				return nil, err
 			}
+			if _, ok := value.(pdfgo.Name); !ok {
+				return nil, fmt.Errorf("invalid PDF named action")
+			}
 			index := *currentPage
 			switch value {
 			case pdfgo.Name("FirstPage"):
@@ -359,7 +364,7 @@ func (p *pdfImporter) linkAction(annotation pdfgo.Annotation, strict bool, curre
 			case pdfgo.Name("PrevPage"):
 				index = max(index-1, 0)
 			default:
-				return nil, &pdfgo.UnsupportedError{Feature: "named link action"}
+				return nil, nil
 			}
 			action.Goto = &Goto{Dest: &Dest{Type: "XYZ", PageID: p.editor.pages[index].ID, OmitLeft: true, OmitTop: true, OmitZoom: true}}
 			*currentPage = index

ofdgo_pdf_link_file.go

@@ -0,0 +1,198 @@
+// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ofdgo
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"errors"
+	"fmt"
+
+	"github.com/xiaoqidun/pdfgo"
+)
+
+// pdfAttachmentKey 按显示名与原始数据复用PDF附件，不合并名称不同的附件
+type pdfAttachmentKey struct {
+	name   string
+	digest [32]byte
+}
+
+// pdfEmbeddedFile 保存目标路径的容器与原始文件，阅读器按需打开
+type pdfEmbeddedFile struct {
+	reader *pdfgo.Reader
+	file   *pdfgo.FileSpecification
+	data   []byte
+}
+
+// remoteLinkAction 保留调用方提供的远程文件，不生成OFD无法表达的文件内目标
+// 入参: object 远程跳转动作, strict 是否禁止目标语义损失
+// 返回: *Action 附件动作, error 结构、取消或转换错误
+func (p *pdfImporter) remoteLinkAction(object pdfgo.Object, strict bool) (*Action, error) {
+	action, err := p.reader.ReadExternalGoToAction(p.ctx, object)
+	if err != nil {
+		return nil, err
+	}
+	if strict {
+		return nil, &pdfgo.UnsupportedError{Feature: "remote document destination conversion"}
+	}
+	if p.resolveFile == nil {
+		p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF remote link file unavailable: " + action.File.Name + "; appearance retained, remote destination not transferred to OFD"})
+		return nil, nil
+	}
+	data, err := p.reader.ReadFileData(p.ctx, *action.File, p.resolveFile)
+	if err != nil {
+		return nil, err
+	}
+	id, err := p.attachmentFile(action.File.Name, data)
+	if err != nil {
+		return nil, err
+	}
+	message := "PDF remote link target retained as attachment; destination inside attached PDF not transferred to OFD"
+	if action.NewWindow == nil {
+		message += "; reader window preference not transferred"
+	}
+	p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: message})
+	return &Action{Event: "CLICK", GotoA: &GotoA{AttachID: id, NewWindow: action.NewWindow}}, nil
+}
+
+// embeddedLinkAction 按目标路径定位附件，回到源文档时保留页内目标
+// 入参: object 嵌入文件动作, strict 是否禁止附件内目标语义损失
+// 返回: *Action 附件动作, pdfgo.Object 源文档目标, error 目标或转换错误
+func (p *pdfImporter) embeddedLinkAction(object pdfgo.Object, strict bool) (*Action, pdfgo.Object, error) {
+	action, err := p.reader.ReadExternalGoToAction(p.ctx, object)
+	if err != nil {
+		return nil, nil, err
+	}
+	stack := []pdfEmbeddedFile{{reader: p.reader}}
+	if action.File != nil {
+		data, available, err := p.mediaData(p.ctx, *action.File)
+		if err != nil || !available {
+			return nil, nil, err
+		}
+		stack[0] = pdfEmbeddedFile{file: action.File, data: data}
+	}
+	var opened []*pdfgo.Reader
+	defer func() {
+		for _, reader := range opened {
+			reader.Close()
+		}
+	}()
+	open := func(file *pdfEmbeddedFile) error {
+		if file.reader != nil {
+			return nil
+		}
+		if err := p.ctx.Err(); err != nil {
+			return err
+		}
+		if file.data == nil {
+			var err error
+			file.data, err = p.reader.ReadFileData(p.ctx, *file.file, p.resolveFile)
+			if err != nil {
+				return err
+			}
+		}
+		reader, err := pdfgo.NewReaderWithOptions(bytes.NewReader(file.data), int64(len(file.data)), pdfgo.ReaderOptions{Warning: p.warning})
+		if err != nil {
+			return err
+		}
+		file.reader = reader
+		opened = append(opened, reader)
+		return p.ctx.Err()
+	}
+	for _, target := range action.Target {
+		if err := p.ctx.Err(); err != nil {
+			return nil, nil, err
+		}
+		if target.Relation == "P" {
+			if len(stack) == 1 {
+				if strict {
+					return nil, nil, &pdfgo.UnsupportedError{Feature: "embedded link parent document unavailable"}
+				}
+				p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF embedded link parent document unavailable; link omitted"})
+				return nil, nil, nil
+			}
+			stack = stack[:len(stack)-1]
+			continue
+		}
+		current := &stack[len(stack)-1]
+		if err := open(current); err != nil {
+			return nil, nil, err
+		}
+		file, err := current.reader.ReadEmbeddedTargetFile(p.ctx, target)
+		if err != nil {
+			if !strict && errors.Is(err, pdfgo.ErrDestinationNotFound) {
+				p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: fmt.Sprintf("%v; link omitted", err)})
+				return nil, nil, nil
+			}
+			return nil, nil, err
+		}
+		stack = append(stack, pdfEmbeddedFile{file: &file})
+	}
+	current := &stack[len(stack)-1]
+	if current.file == nil {
+		destination, err := current.reader.ResolveRemoteDestination(p.ctx, action.Destination)
+		if err != nil {
+			if !strict && errors.Is(err, pdfgo.ErrDestinationNotFound) {
+				p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: fmt.Sprintf("%v; link omitted", err)})
+				return nil, nil, nil
+			}
+			return nil, nil, err
+		}
+		if action.NewWindow != nil && *action.NewWindow {
+			if strict {
+				return nil, nil, &pdfgo.UnsupportedError{Feature: "embedded link to source document in new window"}
+			}
+			p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF embedded link new window not transferred to OFD; source document destination retained"})
+		}
+		return nil, append(pdfgo.Array{destination.Page, destination.Mode}, destination.Parameters...), nil
+	}
+	if strict {
+		return nil, nil, &pdfgo.UnsupportedError{Feature: "destination inside attached PDF"}
+	}
+	if current.data == nil {
+		current.data, err = p.reader.ReadFileData(p.ctx, *current.file, p.resolveFile)
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+	id, err := p.attachmentFile(current.file.Name, current.data)
+	if err != nil {
+		return nil, nil, err
+	}
+	p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF embedded link target retained as attachment; destination inside attached PDF not transferred to OFD"})
+	return &Action{Event: "CLICK", GotoA: &GotoA{AttachID: id, NewWindow: action.NewWindow}}, nil, nil
+}
+
+// attachmentFile 添加或复用PDF附件，缺少显示名时使用固定名称，不改原始文件内容
+// 入参: name 附件显示名, data 原始文件数据
+// 返回: string 附件标识, error 附件写入错误
+func (p *pdfImporter) attachmentFile(name string, data []byte) (string, error) {
+	if name == "" {
+		name = "Attachment"
+	}
+	key := pdfAttachmentKey{name: name, digest: sha256.Sum256(data)}
+	if id, ok := p.attachmentIDs[key]; ok {
+		return id, nil
+	}
+	id, err := p.editor.AddAttachment(name, data)
+	if err != nil {
+		return "", err
+	}
+	if p.attachmentIDs == nil {
+		p.attachmentIDs = make(map[pdfAttachmentKey]string)
+	}
+	p.attachmentIDs[key] = id
+	return id, nil
+}

ofdgo_pdf_media.go

@@ -27,6 +27,68 @@ import (
 	"github.com/xiaoqidun/pdfgo"
 )
 
+// soundResource 注册采样音频或调用方提供的外部音频，不自动访问文件
+// 入参: ctx 取消上下文, sound 音频对象
+// 返回: string 资源标识，不可用时为空, error 读取或封装错误
+func (p *pdfImporter) soundResource(ctx context.Context, sound pdfgo.Sound) (string, error) {
+	if err := ctx.Err(); err != nil {
+		return "", err
+	}
+	var data []byte
+	var err error
+	format := "WAV"
+	if sound.File != nil {
+		var available bool
+		data, available, err = p.mediaData(ctx, *sound.File)
+		if err != nil || !available {
+			return "", err
+		}
+		format = pdfMediaFormat(*sound.File)
+	} else {
+		data, err = pdfSoundWAV(sound)
+	}
+	if err != nil {
+		return "", err
+	}
+	if err := ctx.Err(); err != nil {
+		return "", err
+	}
+	return p.editor.AddMedia("Audio", format, data)
+}
+
+// soundLinkAction 保留音频点击动作，混音、交互限制及音量损失按策略报告
+// 入参: object 音频动作, strict 是否禁止播放参数损失
+// 返回: *Action 音频动作, error 结构、参数或资源错误
+func (p *pdfImporter) soundLinkAction(object pdfgo.Object, strict bool) (*Action, error) {
+	source, err := p.reader.ReadSoundAction(p.ctx, object)
+	if err != nil {
+		return nil, err
+	}
+	if source.Volume < 0 {
+		return nil, &pdfgo.UnsupportedError{Feature: "negative sound action volume conversion"}
+	}
+	if strict {
+		return nil, &pdfgo.UnsupportedError{Feature: "sound action playback policy conversion"}
+	}
+	volume := int(math.Round(source.Volume * 100))
+	if source.Mix {
+		p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF sound action mixing policy not transferred to OFD"})
+	} else {
+		p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF sound action exclusive playback policy not transferred to OFD"})
+	}
+	if source.Synchronous {
+		p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF sound action interaction restriction not transferred to OFD; action waiting retained"})
+	}
+	if float64(volume)/100 != source.Volume {
+		p.warning(pdfgo.Diagnostic{Page: p.page + 1, Message: "PDF sound action volume rounded to OFD integer volume"})
+	}
+	id, err := p.soundResource(p.ctx, source.Sound)
+	if err != nil || id == "" {
+		return nil, err
+	}
+	return &Action{Event: "CLICK", Sound: &Sound{ResourceID: id, Volume: &volume, Repeat: source.Repeat, Synchronous: source.Synchronous}}, nil
+}
+
 // movieAnnotation 转换内嵌视频及其点击播放动作，保留独立海报外观
 // 入参: ctx 取消上下文, page PDF页面, annotation 视频注解
 // 返回: error 媒体资源或播放参数无法表示时返回错误

ofdgo_pdf_object.go

@@ -199,6 +199,19 @@ func (p *pdfImporter) text(mark pdfgo.TextMark) error {
 		}
 		return p.flushPath()
 	}
+	if mark.Size == 0 || mark.HorizontalScale == 0 {
+		return p.degenerateText(mark)
+	}
+	if mark.Size < 0 || mark.HorizontalScale < 0 {
+		x, y := math.Copysign(1, mark.Size*mark.HorizontalScale), math.Copysign(1, mark.Size)
+		mark.Matrix = mark.Matrix.Mul(pdfgo.Matrix{x, 0, 0, y, 0, 0})
+		mark.Size, mark.HorizontalScale = math.Abs(mark.Size), math.Abs(mark.HorizontalScale)
+		positions := make([]pdfgo.Point, len(mark.Positions))
+		for index, position := range mark.Positions {
+			positions[index] = pdfgo.Point{X: position.X * x, Y: position.Y * y}
+		}
+		mark.Positions = positions
+	}
 	if err := p.flushPath(); err != nil {
 		return err
 	}
@@ -291,11 +304,7 @@ func (p *pdfImporter) text(mark pdfgo.TextMark) error {
 		}
 		gid := glyph.ID
 		if embedded && font.ProgramType == "FontFile" {
-			var found bool
-			gid, found = imported.type1Glyphs[glyph.Name]
-			if !found {
-				return fmt.Errorf("missing Type1 glyph %q in PDF font %s", glyph.Name, font.Name)
-			}
+			gid = imported.type1Glyphs[glyph.Name]
 			glyph.HasID = true
 		}
 		if glyph.Text == "" && glyph.HasID {
@@ -433,9 +442,9 @@ func (p *pdfImporter) text(mark pdfgo.TextMark) error {
 		*clipObject.Stroke = false
 		clipObject.Visible = nil
 		if p.clipTexts == nil {
-			p.clipTexts = make(map[*pdfgo.TextClip]TextObject)
+			p.clipTexts = make(map[*pdfgo.TextClip][]TextObject)
 		}
-		p.clipTexts[mark.Clip] = clipObject
+		p.clipTexts[mark.Clip] = []TextObject{clipObject}
 	}
 	if outlineStroke {
 		for _, path := range glyphPaths {
@@ -460,3 +469,42 @@ func (p *pdfImporter) text(mark pdfgo.TextMark) error {
 	p.report.TextObjects++
 	return nil
 }
+
+// degenerateText 保留零字号或零水平缩放的逐字位置与退化字形
+// 入参: mark PDF文字绘制信息
+// 返回: error 转换错误
+func (p *pdfImporter) degenerateText(mark pdfgo.TextMark) error {
+	x, y := math.Copysign(1, mark.Size*mark.HorizontalScale), math.Copysign(1, mark.Size)
+	size, scale := math.Abs(mark.Size), math.Abs(mark.HorizontalScale)
+	if size == 0 {
+		size, x, y = 1, 0, 0
+	}
+	if scale == 0 {
+		scale, x = 1, 0
+	}
+	var clips []TextObject
+	for index, position := range mark.Positions {
+		glyph := mark
+		glyph.Size, glyph.HorizontalScale = size, scale
+		glyph.Matrix = mark.Matrix.Mul(pdfgo.Matrix{1, 0, 0, 1, position.X, position.Y}).Mul(pdfgo.Matrix{x, 0, 0, y, 0, 0})
+		glyph.Positions = []pdfgo.Point{{}}
+		glyph.Glyphs = mark.Glyphs[index : index+1]
+		if mark.Clip != nil {
+			glyph.Clip = new(pdfgo.TextClip)
+		}
+		if err := p.text(glyph); err != nil {
+			return err
+		}
+		if glyph.Clip != nil {
+			clips = append(clips, p.clipTexts[glyph.Clip]...)
+			delete(p.clipTexts, glyph.Clip)
+		}
+	}
+	if mark.Clip != nil {
+		if p.clipTexts == nil {
+			p.clipTexts = make(map[*pdfgo.TextClip][]TextObject)
+		}
+		p.clipTexts[mark.Clip] = clips
+	}
+	return nil
+}

ofdgo_render.go

@@ -88,9 +88,14 @@ func (r *Renderer) PageLinks(page *PageContent) ([]PageLink, error) {
 				}
 			} else if action.URI != nil && action.URI.URI != "" {
 				link.URI = resolveActionURI(*action.URI)
+				link.Target = action.URI.Target
 				links = append(links, link)
 			} else if action.GotoA != nil {
 				link.Attachment = action.GotoA.AttachID
+				if action.GotoA.NewWindow != nil {
+					window := *action.GotoA.NewWindow
+					link.NewWindow = &window
+				}
 				links = append(links, link)
 			} else if action.Sound != nil {
 				value := *action.Sound

ofdgo_renderer_svg_canvas.go

@@ -114,7 +114,6 @@ func (s *svgResourceRenderer) RenderImage(img image.Image, m canvas.Matrix) {
 	_, height := s.Size()
 	size := img.Bounds().Size()
 	m = m.Translate(0, float64(size.Y))
-	// 直接写出换轴后的矩阵，原坐标平移为零时仍需保留页面高度补偿。
 	matrix := Matrix{a: m[0][0], b: -m[1][0], c: -m[0][1], d: m[1][1], e: m[0][2], f: height - m[1][2]}
 	fmt.Fprintf(s.writer, `<image transform="matrix(%s)" width="%d" height="%d" xlink:href="`, matrix.String(), size.X, size.Y)
 	if s.imageNames != nil {
@@ -187,7 +186,6 @@ func (r *Renderer) renderSVGResources(page *PageContent, writer io.Writer, image
 		seen:     make(map[string]bool),
 	}
 	io.WriteString(buffer, svgCreatorMetadata)
-	// 图片方向由文档变换决定，不再由浏览器应用EXIF方向。
 	io.WriteString(buffer, `<g style="image-orientation:none">`)
 	if images {
 		s.imageNames = make(map[svgImageKey]string)