feat(编辑能力): 修复字体编辑错配，优化来源标识

assets/webui/ofdgo.css

@@ -265,12 +265,26 @@ a:focus-visible {
 }
 
 .font-listbox [role="option"] {
+	display: flex;
+	align-items: baseline;
+	justify-content: space-between;
+	gap: 12px;
 	padding: 6px 8px;
 	line-height: 1.4;
 	overflow-wrap: anywhere;
 	cursor: pointer;
 }
 
+.font-listbox [role="option"] > span:first-child {
+	min-width: 0;
+}
+
+.font-option-source {
+	flex: none;
+	color: var(--text-muted);
+	font-size: 12px;
+}
+
 .font-listbox [role="option"]:hover,
 .font-listbox [aria-selected="true"] {
 	background: var(--accent-soft);

assets/webui/ofdgo_font.js

@@ -26,6 +26,11 @@ export class FontPicker {
 	setFonts(fonts, selected) {
 		this.close();
 		this.fonts = fonts;
+		this.names = new Map();
+		for (const font of fonts) {
+			const name = (font.fullName || font.name).normalize("NFKC").toLocaleLowerCase();
+			this.names.set(name, (this.names.get(name) || 0) + 1);
+		}
 		const key = font => font?.id || font?.postscriptName;
 		this.value = fonts.length ? String(Math.max(0, fonts.findIndex(font => key(font) === key(selected)))) : "";
 		this.restore();
@@ -39,10 +44,17 @@ export class FontPicker {
 	restore() {
 		const font = this.fonts[Number(this.value)];
 		this.input.value = font?.fullName || font?.name || "";
+		this.input.title = font ? [this.input.value, this.sourceLabel(font)].filter(Boolean).join(" · ") : "";
 		this.input.setAttribute("aria-expanded", String(this.open));
 		this.input.removeAttribute("aria-activedescendant");
 	}
 
+	sourceLabel(font) {
+		const name = (font.fullName || font.name).normalize("NFKC").toLocaleLowerCase();
+		if (this.names.get(name) < 2) return "";
+		return font.embedded ? "内嵌" : font.file || ["stored", "upload"].includes(font.source) ? "上传" : "系统";
+	}
+
 	show(query = "") {
 		if (this.input.disabled) return;
 		const normalize = value => value.normalize("NFKC").toLocaleLowerCase().replace(/\s+/g, " ").trim();
@@ -58,7 +70,17 @@ export class FontPicker {
 			option.dataset.index = String(index);
 			option.setAttribute("role", "option");
 			option.setAttribute("aria-disabled", String(Boolean(font.disabled)));
-			option.textContent = font.fullName || font.name;
+			const name = document.createElement("span");
+			name.textContent = font.fullName || font.name;
+			option.append(name);
+			const source = this.sourceLabel(font);
+			if (source) {
+				const label = document.createElement("span");
+				label.className = "font-option-source";
+				label.textContent = source;
+				option.append(label);
+			}
+			option.title = font.name || font.fullName;
 			this.list.append(option);
 		}
 		if (!this.matches.length) {

internal/webui/wasm.go

@@ -758,27 +758,18 @@ func editorObjects(index int, text *ofdgo.PageText) ([]any, error) {
 	return objects, nil
 }
 
-// editorFont 读取创作对象的完整内嵌字体，供画布输入使用
+// editorFont 读取对象实际使用的内嵌字体，供画布输入使用
 // 入参: args 字体资源标识
 // 返回: any 字体数据, error 错误信息
 func editorFont(args []js.Value) (any, error) {
 	if currentEditor == nil {
 		return nil, fmt.Errorf("no document is being edited")
 	}
-	fonts, err := currentSession.Reader.Fonts()
+	data, err := currentSession.Reader.FontData(args[0].String())
 	if err != nil {
 		return nil, err
 	}
-	for _, font := range fonts {
-		if font.ID == args[0].String() {
-			data, err := currentSession.Reader.ResData(font.FontFile)
-			if err != nil {
-				return nil, err
-			}
-			return successResult(map[string]any{"bytes": bytesToJS(data)}), nil
-		}
-	}
-	return nil, fmt.Errorf("font resource %q not found", args[0].String())
+	return successResult(map[string]any{"bytes": bytesToJS(data)}), nil
 }
 
 // replaceImage 替换图片资源并更新预览

ofdgo_editor_open.go

@@ -410,23 +410,16 @@ func (e *Editor) editorFont(id string) (*font.SFNT, error) {
 		return sfnt, nil
 	}
 	if e.source != nil {
-		reader := e.source.reader
-		if f := reader.fontCache[id]; f != nil && f.FontFile != "" {
-			data, err := reader.ResData(f.FontFile)
-			if err != nil {
-				return nil, err
-			}
-			data, err = font.ToSFNT(data)
-			if err != nil {
-				return nil, err
-			}
-			sfnt, err := font.ParseSFNT(data, 0)
-			if err != nil {
-				return nil, err
-			}
-			e.fonts[id] = sfnt
-			return sfnt, nil
+		data, err := e.source.reader.FontData(id)
+		if err != nil {
+			return nil, err
 		}
+		sfnt, err := font.ParseSFNT(data, 0)
+		if err != nil {
+			return nil, err
+		}
+		e.fonts[id] = sfnt
+		return sfnt, nil
 	}
 	return nil, fmt.Errorf("embedded font %q not found", id)
 }

ofdgo_font_fs.go

@@ -189,7 +189,7 @@ func (fsys *FontFS) matchStyle(names []string, bold, italic bool) []fontFileMatc
 // 返回: []fontFileMatch 按优先级排列的字体匹配
 func fontFileMatches(candidates []fontFileCandidate, names []string, bold, italic bool) []fontFileMatch {
 	matches := make([]fontFileMatch, 0, len(candidates))
-	seen := make(map[string]int, len(candidates))
+	seen := make(map[fontFileKey]int, len(candidates))
 	if len(names) == 0 {
 		for _, name := range fontDefaultSystemNames() {
 			matches = append(matches, fontFileMatches(candidates, []string{name}, bold, italic)...)
@@ -199,7 +199,7 @@ func fontFileMatches(candidates []fontFileCandidate, names []string, bold, itali
 		})
 		unique := matches[:0]
 		for _, match := range matches {
-			key := strings.ToLower(match.name)
+			key := fontFileKey{strings.ToLower(match.name), match.face}
 			if _, ok := seen[key]; !ok {
 				seen[key] = len(unique)
 				unique = append(unique, match)
@@ -278,6 +278,7 @@ func cleanFontName(name string) string {
 // fontFileCandidate 字体文件候选
 type fontFileCandidate struct {
 	name       string
+	face       int
 	base       string
 	lowerBase  string
 	normalized string
@@ -421,15 +422,22 @@ func (m fontPatternMatcher) styleSuffixNormalized(name string) string {
 // fontFileMatch 字体文件匹配结果
 type fontFileMatch struct {
 	name      string
+	face      int
 	priority  int
 	rank      int
 	styleRank int
 	sortName  string
 }
 
+// fontFileKey 字体文件与集合索引的去重键
+type fontFileKey struct {
+	name string
+	face int
+}
+
 // appendFontFileMatch 追加字体文件匹配结果
 // 入参: matches 匹配结果, seen 已匹配文件, matcher 匹配器, file 字体文件候选, rank 匹配等级, bold 是否粗体, italic 是否斜体
-func appendFontFileMatch(matches *[]fontFileMatch, seen map[string]int, matcher fontPatternMatcher, file fontFileCandidate, rank int, bold, italic bool) {
+func appendFontFileMatch(matches *[]fontFileMatch, seen map[fontFileKey]int, matcher fontPatternMatcher, file fontFileCandidate, rank int, bold, italic bool) {
 	if rank == fontMatchNone {
 		return
 	}
@@ -439,18 +447,20 @@ func appendFontFileMatch(matches *[]fontFileMatch, seen map[string]int, matcher
 	}
 	next := fontFileMatch{
 		name:      file.name,
+		face:      file.face,
 		priority:  matcher.priority,
 		rank:      rank,
 		styleRank: fontFileStyleRank(suffix, bold, italic),
 		sortName:  file.lowerBase,
 	}
-	if index, ok := seen[file.fold]; ok {
+	key := fontFileKey{file.fold, file.face}
+	if index, ok := seen[key]; ok {
 		if fontFileMatchLess(next, (*matches)[index]) {
 			(*matches)[index] = next
 		}
 		return
 	}
-	seen[file.fold] = len(*matches)
+	seen[key] = len(*matches)
 	*matches = append(*matches, next)
 }
 
@@ -483,8 +493,13 @@ func fontFileMatchLess(left, right fontFileMatch) bool {
 // 返回: []string 字体文件列表
 func fontFileMatchNames(matches []fontFileMatch) []string {
 	names := make([]string, 0, len(matches))
+	seen := make(map[string]bool, len(matches))
 	for _, match := range matches {
-		names = append(names, match.name)
+		key := strings.ToLower(match.name)
+		if !seen[key] {
+			seen[key] = true
+			names = append(names, match.name)
+		}
 	}
 	return names
 }

ofdgo_font_info.go

@@ -15,6 +15,7 @@
 package ofdgo
 
 import (
+	"bytes"
 	"encoding/xml"
 	"fmt"
 	"io"
@@ -75,6 +76,30 @@ func (r *Reader) Fonts() ([]Font, error) {
 	return fonts, nil
 }
 
+// FontData 读取内嵌字体，集合按声明名称和样式提取为独立字体，其他格式保留原始字节
+// 入参: id 字体资源标识
+// 返回: []byte 字体数据, error 资源缺失或集合解析错误
+func (r *Reader) FontData(id string) ([]byte, error) {
+	if r.fontCache[id] == nil {
+		if _, err := r.Fonts(); err != nil {
+			return nil, err
+		}
+	}
+	f := r.fontCache[id]
+	if f == nil || f.FontFile == "" {
+		return nil, fmt.Errorf("embedded font %q not found", id)
+	}
+	data, err := r.ResData(f.FontFile)
+	if err != nil {
+		return nil, err
+	}
+	if bytes.HasPrefix(data, []byte("ttcf")) {
+		index := fontCollectionIndex(data, []string{f.FontName, f.FamilyName}, f.Bold, f.Italic)
+		return extractCollectionFont(data, index)
+	}
+	return data, nil
+}
+
 // FontInfos 获取OFD字体诊断信息
 // 返回: []FontInfo 字体诊断列表, error 错误信息
 func (r *Renderer) FontInfos() ([]FontInfo, error) {

ofdgo_font_loader.go

@@ -40,6 +40,7 @@ const (
 type fontSource struct {
 	kind     fontSourceKind
 	index    int
+	face     int
 	name     string
 	exact    bool
 	priority int
@@ -49,6 +50,7 @@ type fontSource struct {
 type fontSourceKey struct {
 	kind  fontSourceKind
 	index int
+	face  int
 	name  string
 }
 
@@ -76,7 +78,7 @@ func (r *Renderer) loadFont(fontID string) *canvas.FontFamily {
 	fontStyle := canvasFontStyle(of)
 	ff := canvas.NewFontFamily(of.FontName)
 	if of.FontFile != "" {
-		if fontData, err := r.Reader.ResData(of.FontFile); err == nil {
+		if fontData, err := r.Reader.FontData(fontID); err == nil {
 			if cidMap := getCFFCIDRuneMap(fontData); len(cidMap) > 0 {
 				r.fontCIDMap[fontID] = cidMap
 			}
@@ -144,12 +146,12 @@ func (r *Renderer) fontSources(fontID string, font *Font, style canvas.FontStyle
 	seen := make(map[fontSourceKey]bool)
 	for _, dir := range r.fontDirs {
 		for _, match := range r.matchFontFiles(dir, names, bold, italic) {
-			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: match.name, exact: true, priority: min(match.priority, 0)})
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: match.name, face: match.face, exact: true, priority: min(match.priority, 0)})
 		}
 	}
 	for index := range r.fontFS {
 		for _, match := range r.matchFontFS(index, names, bold, italic) {
-			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: match.name, exact: true, priority: min(match.priority, 0)})
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: match.name, face: match.face, exact: true, priority: min(match.priority, 0)})
 		}
 	}
 	sortFontSources(sources)
@@ -157,7 +159,7 @@ func (r *Renderer) fontSources(fontID string, font *Font, style canvas.FontStyle
 	if canLoadSystemFonts() {
 		for _, dir := range systemFontDirs() {
 			for _, match := range r.matchFontFiles(dir, names, bold, italic) {
-				sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: match.name, exact: true, priority: min(match.priority, 0)})
+				sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: match.name, face: match.face, exact: true, priority: min(match.priority, 0)})
 			}
 		}
 		for _, name := range fontSystemNames(names...) {
@@ -174,7 +176,7 @@ func (r *Renderer) fontSources(fontID string, font *Font, style canvas.FontStyle
 	sortFontSources(sources[systemStart:])
 	for index := range r.fontFS {
 		for _, match := range r.matchFontFS(index, nil, bold, italic) {
-			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: match.name})
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: match.name, face: match.face})
 		}
 	}
 	for index, fsys := range r.fontFS {
@@ -202,7 +204,7 @@ func appendFontSource(sources []fontSource, seen map[fontSourceKey]bool, source
 	if source.name == "" {
 		return sources
 	}
-	key := fontSourceKey{kind: source.kind, index: source.index, name: source.name}
+	key := fontSourceKey{kind: source.kind, index: source.index, name: source.name, face: source.face}
 	if seen[key] {
 		return sources
 	}
@@ -219,7 +221,7 @@ func (r *Renderer) fontSourceMatch(fontID string, font *Font) (fontSource, bool)
 	}
 	style := canvasFontStyle(font)
 	for _, source := range r.fontSources(fontID, font, style) {
-		key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name}, style: style}
+		key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name, face: source.face}, style: style}
 		if cached, ok := r.fontCache[key]; ok {
 			if cached != nil {
 				return source, true
@@ -238,22 +240,27 @@ func (r *Renderer) fontSourceMatch(fontID string, font *Font) (fontSource, bool)
 // 入参: family 字体族, source 字体来源, style Canvas字体样式
 // 返回: *canvas.FontFamily 字体族
 func (r *Renderer) loadFontSource(family *canvas.FontFamily, source fontSource, style canvas.FontStyle) *canvas.FontFamily {
-	key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name}, style: style}
+	key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name, face: source.face}, style: style}
 	if cached, ok := r.fontCache[key]; ok {
 		return cached
 	}
 	var err error
+	var data []byte
 	switch source.kind {
 	case fontSourceFile:
-		err = family.LoadFontFile(source.name, style)
+		data, err = os.ReadFile(source.name)
 	case fontSourceFS:
-		var data []byte
 		data, err = fs.ReadFile(r.fontFS[source.index], source.name)
+	case fontSourceSystem:
+		err = family.LoadSystemFont(source.name, style)
+	}
+	if err == nil && source.kind != fontSourceSystem {
+		if bytes.HasPrefix(data, []byte("ttcf")) {
+			data, err = extractCollectionFont(data, source.face)
+		}
 		if err == nil {
 			err = family.LoadFont(data, 0, style)
 		}
-	case fontSourceSystem:
-		err = family.LoadSystemFont(source.name, style)
 	}
 	if err != nil {
 		r.fontCache[key] = nil

ofdgo_font_name.go

@@ -34,42 +34,70 @@ type fontNameRecord struct {
 }
 
 // appendFontFileNames 使用字体内部名称匹配，缺失时保留文件名
-// 入参: candidates 字体候选, index 文件候选索引, names 字体内部名称
+// 入参: candidates 字体候选, index 文件候选索引, faces 各字体内部名称
 // 返回: []fontFileCandidate 字体候选列表
-func appendFontFileNames(candidates []fontFileCandidate, index int, names []string) []fontFileCandidate {
+func appendFontFileNames(candidates []fontFileCandidate, index int, faces [][]string) []fontFileCandidate {
 	file := candidates[index]
-	for i, name := range names {
-		file.normalized = fontNormalizeName(name)
-		if i == 0 {
-			candidates[index] = file
-		} else {
-			candidates = append(candidates, file)
+	replaced := false
+	for face, names := range faces {
+		file.face = face
+		for _, name := range names {
+			file.normalized = fontNormalizeName(name)
+			if !replaced {
+				candidates[index] = file
+				replaced = true
+			} else {
+				candidates = append(candidates, file)
+			}
 		}
 	}
 	return candidates
 }
 
-// fontFileNames 读取字体或集合首项的名称
+// fontFileNames 按字体索引读取字体或集合中各项的名称
 // 入参: file 字体数据
-// 返回: []string 字体名称及带样式的字体族名称
-func fontFileNames(file io.ReaderAt) []string {
+// 返回: [][]string 各字体名称及带样式的字体族名称
+func fontFileNames(file io.ReaderAt) [][]string {
 	var header [12]byte
 	if _, err := file.ReadAt(header[:], 0); err != nil {
 		return nil
 	}
-	var offset int64
-	if string(header[:4]) == "ttcf" {
-		if binary.BigEndian.Uint32(header[8:]) == 0 {
-			return nil
-		}
+	if string(header[:4]) != "ttcf" {
+		return [][]string{fontFaceNames(file, 0)}
+	}
+	version := binary.BigEndian.Uint32(header[4:])
+	if version != 0x00010000 && version != 0x00020000 {
+		return nil
+	}
+	var faces [][]string
+	for i, count := uint32(0), binary.BigEndian.Uint32(header[8:]); i < count; i++ {
 		var entry [4]byte
-		if _, err := file.ReadAt(entry[:], 12); err != nil {
-			return nil
-		}
-		offset = int64(binary.BigEndian.Uint32(entry[:]))
-		if _, err := file.ReadAt(header[:], offset); err != nil {
+		if _, err := file.ReadAt(entry[:], 12+int64(i)*4); err != nil {
 			return nil
 		}
+		faces = append(faces, fontFaceNames(file, int64(binary.BigEndian.Uint32(entry[:]))))
+	}
+	return faces
+}
+
+// fontCollectionIndex 按内部名称与样式选择集合项，未匹配时保留首项
+// 入参: data 集合数据, names 字体名称, bold 是否粗体, italic 是否斜体
+// 返回: int 零起始字体索引
+func fontCollectionIndex(data []byte, names []string, bold, italic bool) int {
+	candidates := appendFontFileNames([]fontFileCandidate{{}}, 0, fontFileNames(bytes.NewReader(data)))
+	if matches := fontFileMatches(candidates, names, bold, italic); len(matches) > 0 {
+		return matches[0].face
+	}
+	return 0
+}
+
+// fontFaceNames 读取指定字体表目录中的名称
+// 入参: file 字体数据, offset 字体表目录偏移
+// 返回: []string 字体名称及带样式的字体族名称
+func fontFaceNames(file io.ReaderAt, offset int64) []string {
+	var header [12]byte
+	if _, err := file.ReadAt(header[:], offset); err != nil {
+		return nil
 	}
 	switch string(header[:4]) {
 	case "\x00\x01\x00\x00", "OTTO", "true":