feat(字体选择): 默认字体优先中文

assets/webui/ofdgo.js

@@ -113,6 +113,8 @@ function createDocumentState() {
 		outlineExpanded: new Map(),
 		textFonts: [],
 		textFontID: null,
+		textFontInitialized: false,
+		textFontInitializing: null,
 		textDefaults: { type: "TextObject", size: 16 * 25.4 / 72, color: "#000000", wrap: true, align: "left", paragraphHeight: 0, letterSpacing: 0 },
 		ofdBytes: null,
 		sourcePDF: false,
@@ -4363,13 +4365,12 @@ function editorFonts(item) {
 	return [...embedded.values(), ...fonts];
 }
 
-async function loadEditorFonts(requestPermission = true) {
-	const tab = documentTab(), target = tab.state;
-	const tasks = [];
-	if (!state.fontCatalogLoading && fontManager.canReadLocal() && !fontManager.catalogLoaded && fontManager.permission !== "denied"
+async function loadEditorFonts(requestPermission = true, tab = documentTab(), waitPending = false) {
+	const target = tab.state;
+	const tasks = waitPending ? [target.fontCatalogLoading, target.fontFacesLoading].filter(Boolean) : [];
+	if (!target.fontCatalogLoading && fontManager.canReadLocal() && !fontManager.catalogLoaded && fontManager.permission !== "denied"
 		&& (requestPermission || fontManager.permission === "granted")) {
-		target.fontCatalogLoading = true;
-		tasks.push((async () => {
+		target.fontCatalogLoading = (async () => {
 			try {
 				await fontManager.queryLocal();
 				refreshEditorFonts();
@@ -4378,13 +4379,13 @@ async function loadEditorFonts(requestPermission = true) {
 			} finally {
 				target.fontCatalogLoading = false;
 			}
-		})());
+		})();
+		tasks.push(target.fontCatalogLoading);
 	}
-	if (!state.fontFacesLoading && fontManager.userFonts.some(font => font.enabled && !font.faces)) {
-		target.fontFacesLoading = true;
+	if (!target.fontFacesLoading && fontManager.userFonts.some(font => font.enabled && !font.faces)) {
 		const wasmSeq = target.wasmSeq;
 		const current = () => !tab.closed && !target.wasmExited && target.wasmSeq === wasmSeq;
-		tasks.push((async () => {
+		target.fontFacesLoading = (async () => {
 			try {
 				await fontManager.loadFaces(data => callTabWASM(tab, "ofdgoFontFaces", data), current);
 				refreshEditorFonts();
@@ -4392,11 +4393,33 @@ async function loadEditorFonts(requestPermission = true) {
 				target.fontFacesLoading = false;
 				if (!current() && state.ready) loadEditorFonts(false);
 			}
-		})());
+		})();
+		tasks.push(target.fontFacesLoading);
 	}
 	await Promise.all(tasks);
 }
 
+async function initializeTextFont(tab) {
+	const target = tab.state;
+	if (target.textFontInitialized) return;
+	if (target.textFontInitializing) return target.textFontInitializing;
+	const wasmSeq = target.wasmSeq;
+	const current = () => !tab.closed && !target.wasmExited && target.wasmSeq === wasmSeq;
+	target.textFontInitializing = (async () => {
+		await loadEditorFonts(false, tab, true);
+		if (!current()) return;
+		const font = await fontManager.defaultFont((faces, families) => callTabWASM(tab, "ofdgoFontPreferenceOrder", JSON.stringify({
+			faces: faces.map(({ family, fullName, postscriptName, style, names }) => ({ family, fullName, postscriptName, style, names })), families
+		})), async (font, text) => callTabWASM(tab, "ofdgoCheckTextFont", await readTextFont(font, tab), text), current);
+		if (!current()) return;
+		target.textDefaults.fontChoice = font || (fontManager.editorFonts().length ? null : undefined);
+		target.textFontInitialized = true;
+		if (isForegroundDocument(tab)) refreshEditorFonts();
+	})();
+	try { await target.textFontInitializing; }
+	finally { target.textFontInitializing = null; }
+}
+
 function refreshEditorFonts() {
 	updateTextFonts(canvasEditor.selected, true, true);
 }
@@ -4446,9 +4469,9 @@ function updateTextFonts(item, refresh = false, preserve = false) {
 			state.textFonts.unshift(selected);
 		}
 		const mixed = (item?.items || item?.richText) && !id;
-		fontPicker.setFonts(state.textFonts, mixed ? null : selected || state.textFonts[0], preserve);
+		fontPicker.setFonts(state.textFonts, mixed ? null : selected || (state.textDefaults.fontChoice === null ? null : state.textFonts[0]), preserve);
 		el.textFont.placeholder = mixed ? "混合" : "";
-		if (!id && !item?.items && !item?.richText) state.textDefaults.fontChoice = state.textFonts[Number(fontPicker.value)];
+		if (!id && !item?.items && !item?.richText) state.textDefaults.fontChoice = state.textFonts[Number(fontPicker.value)] || (state.textDefaults.fontChoice === null ? null : undefined);
 	}
 }
 
@@ -6567,6 +6590,7 @@ async function openDocument(options = {}) {
 			return;
 		}
 		const pageFonts = state.sourcePDF && !nativeHost && !state.editorInfo ? await fontManager.files(fontManager.records()) : fonts;
+		if (state.editing) await initializeTextFont(tab);
 		if (openSeq !== state.openSeq) return;
 		tab.worker.configurePages?.(!state.editorInfo && !doc.encrypted && state.ofdBytes ? {
 			file: state.ofdBytes, fonts: pageFonts, pdf: state.sourcePDF, fontNames: state.sourcePDF ? [...fontManager.localEntries().keys()] : [], annotations: state.renderAnnotations, document: doc.documentIndex, version: doc.documentVersion

assets/webui/ofdgo_font.js

@@ -335,6 +335,25 @@ export class FontManager {
 		}
 	}
 
+	async defaultFont(order, inspect, current = () => true) {
+		const fonts = this.editorFonts().filter(font => !font.disabled);
+		if (!fonts.length) return;
+		const families = [["DengXian", "等线"], ["Microsoft YaHei", "微软雅黑"], ["PingFang SC", "苹方-简", "苹方 简体"],
+			["Noto Sans SC", "Noto Sans CJK SC"], ["Source Han Sans SC", "Source Han Sans CN", "思源黑体", "思源黑体 CN"]];
+		const indices = await order(fonts, families);
+		let fallback = fonts.length;
+		for (const index of indices) {
+			if (!current()) return;
+			try {
+				await inspect(fonts[index], "中文汉字编辑水印，。！？");
+				if (current()) return fonts[index];
+			} catch (error) {
+				if (error.missingGlyphs) fallback = Math.min(fallback, index);
+			}
+		}
+		if (current()) return fonts[fallback];
+	}
+
 	async add(fonts) {
 		let saved = true;
 		try {

internal/webui/webui.go

@@ -3175,6 +3175,20 @@ func (e *businessEngine) fontFaces(args []platformValue) (any, error) {
 	return (ofdgo.FontFile{Data: data}).Faces()
 }
 
+// fontPreferenceOrder 按字体族偏好排列编辑字体候选索引
+// 入参: args 候选字体和字体族别名组的JSON数据
+// 返回: any 候选索引列表, error 错误信息
+func (e *businessEngine) fontPreferenceOrder(args []platformValue) (any, error) {
+	var request struct {
+		Faces    []ofdgo.FontFace `json:"faces"`
+		Families [][]string       `json:"families"`
+	}
+	if err := json.Unmarshal([]byte(args[0].String()), &request); err != nil {
+		return nil, err
+	}
+	return ofdgo.FontPreferenceOrder(request.Faces, request.Families), nil
+}
+
 // fontFace 提取编辑时选定的字体，供输入预览和保存共用
 // 入参: args 字体数据和零起始索引
 // 返回: any 独立字体数据, error 错误信息
@@ -8053,6 +8067,7 @@ func (e *businessEngine) businessCommands() map[string]func([]platformValue) (an
 		"ofdgoSaveRichText":           e.saveRichText,
 		"ofdgoPreviewRichText":        e.previewRichText,
 		"ofdgoCheckTextFont":          e.checkTextFont,
+		"ofdgoFontPreferenceOrder":    e.fontPreferenceOrder,
 		"ofdgoInsertImage":            e.insertImage,
 		"ofdgoInsertShape":            e.insertShape,
 		"ofdgoUpdatePathStyle":        e.updatePathStyle,

ofdgo_font.go

@@ -17,6 +17,7 @@ package ofdgo
 import (
 	"fmt"
 	"path"
+	"sort"
 	"unicode/utf8"
 
 	basefont "github.com/xiaoqidun/ofdgo/internal/base/font"
@@ -25,6 +26,40 @@ import (
 // FontFace 字体文件中的字体名称与零起始索引，不依赖文件名
 type FontFace = basefont.Face
 
+// FontPreferenceOrder 按字体族偏好排列候选索引，同族优先常规样式，其余保持原顺序
+// 入参: faces 候选字体, families 按优先级排列的字体族别名组
+// 返回: []int 候选字体的零起始索引，不修改输入列表
+func FontPreferenceOrder(faces []FontFace, families [][]string) []int {
+	priorities := make(map[string]int)
+	for priority, names := range families {
+		for _, name := range names {
+			key := FontNormalizeName(name)
+			if _, exists := priorities[key]; key != "" && !exists {
+				priorities[key] = priority
+			}
+		}
+	}
+	order, ranks := make([]int, len(faces)), make([]int, len(faces))
+	for i, face := range faces {
+		order[i], ranks[i] = i, len(families)*2
+		names := append([]string{face.Family, face.FullName, face.PostScriptName}, face.Names...)
+		for _, name := range names {
+			if priority, exists := priorities[FontNormalizeName(name)]; exists && priority*2 < ranks[i] {
+				ranks[i] = priority * 2
+			}
+		}
+		if ranks[i] < len(families)*2 {
+			switch FontNormalizeName(face.Style) {
+			case "", "regular", "normal", "roman", "常规", "正常", "标准":
+			default:
+				ranks[i]++
+			}
+		}
+	}
+	sort.SliceStable(order, func(i, j int) bool { return ranks[order[i]] < ranks[order[j]] })
+	return order
+}
+
 // FixFontDataAggressive 激进修复字体数据
 // 尝试修复缺失表(OS/2, cmap等)的TrueType字体或包装CFF裸数据
 // 对显式字形映射补充私有字符cmap，便于按glyph id渲染