feat(新增平台): 新增linux amd64桌面支持

assets/webui/ofdgo.js

@@ -4304,12 +4304,7 @@ async function boot() {
 				}).catch((err) => showError(err, !state.doc));
 			});
 		}
-		if (nativeHost) await nativeHost.start(files => {
-			if (document.body.hasAttribute("data-busy")) { setStatus("请等待当前操作完成"); return; }
-			if (batchElements.Panel.open) addBatchFiles(files);
-			else if (files.length === 1) openOFD(files[0]);
-			else if (files.length) setStatus("请选择一个文档");
-		}, error => showError(error, !state.doc));
+		if (nativeHost) await nativeHost.start(openNativeFiles, error => showError(error, !state.doc));
 		try {
 			const remote = remoteDocumentOptions(window.location.hash);
 			if (remote && openSeq === state.openSeq) await openOFD({ name: remote.name }, remote);
@@ -4326,6 +4321,21 @@ async function boot() {
 	}
 }
 
+async function openNativeFiles(files) {
+	let retained = [];
+	try {
+		if (document.body.hasAttribute("data-busy") || batchElements.Panel.open && batch.running) { setStatus("请等待当前操作完成"); return; }
+		if (batchElements.Panel.open) {
+			retained = files.filter(isDocumentFile);
+			addBatchFiles(files);
+		} else if (files.length === 1) {
+			if (await openOFD(files[0])) retained = files;
+		} else if (files.length) setStatus("请选择一个文档");
+	} finally {
+		await nativeHost.discardFiles(files.filter(file => !retained.includes(file)));
+	}
+}
+
 async function registerOffline() {
 	const scope = new URL("./", location.href).href;
 	let registration = await navigator.serviceWorker.getRegistration(scope);
@@ -4804,6 +4814,7 @@ async function openOFD(file, remote = null, handle = file?.handle) {
 	state.wasmRecoveries = 0;
 	const openSeq = ++state.openSeq;
 	setBusy(true, "正在读取文档", 10, STATUS.opening);
+	let accepted = false;
 	try {
 		const downloaded = remote ? await downloadRemoteDocument(remote) : null;
 		if (openSeq !== state.openSeq) return;
@@ -4843,6 +4854,7 @@ async function openOFD(file, remote = null, handle = file?.handle) {
 		if (openSeq !== state.openSeq) return;
 		state.ofdBytes = bytes;
 		state.saveHandle = format === "ofd" && !remote ? handle || null : null;
+		accepted = true;
 		state.saveStamp = state.saveHandle && !nativeHost ? {size: file.size, modified: file.lastModified} : null;
 		state.conversionWarnings = warnings;
 		state.fileName = (name || "ofdgo.ofd").replace(/\.pdf$/i, ".ofd");
@@ -4893,6 +4905,7 @@ async function openOFD(file, remote = null, handle = file?.handle) {
 			setBusy(false);
 		}
 	}
+	return accepted;
 }
 
 function isDocumentFile(file) {
@@ -12186,10 +12199,11 @@ function fitPageScale(page, mode) {
 	}
 	const layoutWidth = state.pageLayout > 1 ? Math.max(width, contentWidth) : width;
 	const scrollbar = scrollbarWidth();
+	const viewport = el.viewerPanel.getBoundingClientRect();
 	let vertical = false, horizontal = false, scale = 1;
 	for (let pass = 0; pass < 3; pass++) {
-		const availableWidth = Math.max(1, el.viewerPanel.offsetWidth - (vertical ? scrollbar : 0));
-		const availableHeight = Math.max(1, el.viewerPanel.offsetHeight - (horizontal ? scrollbar : 0));
+		const availableWidth = Math.max(1, viewport.width - (vertical ? scrollbar : 0));
+		const availableHeight = Math.max(1, viewport.height - (horizontal ? scrollbar : 0));
 		scale = Math.min(4, Math.max(1, availableWidth - space * 2 - gap) / layoutWidth);
 		if (mode === "height") scale = Math.min(scale, Math.max(1, availableHeight - space * 2) / height);
 		const blockSpace = state.continuous ? 0 : Math.max(space, (availableHeight - height * scale) / 2);

assets/webui/ofdgo_host.js

@@ -529,13 +529,20 @@ class NativeHost {
 	}
 
 	async start(onFiles, onError) {
-		this.bridge.on("ofdgo.files", values => onFiles(values.map(value => new NativeFile(value))));
+		this.bridge.on("ofdgo.files", async values => {
+			try { await onFiles(values.map(value => new NativeFile(value))); }
+			catch (error) { onError(error); }
+		});
 		this.bridge.on("ofdgo.error", message => onError(new Error(message)));
 		const title = document.querySelector("title");
 		if (title) new MutationObserver(() => this.call("title", {title:document.title}).catch(onError)).observe(title, {childList:true});
 		await this.call("ready", {});
 	}
 
+	async discardFiles(files) {
+		await Promise.all(files.filter(file => file.drop && file.nativeFile).map(file => this.call("drop.release", {file:file.nativeFile})));
+	}
+
 	installFileInputs(onError) {
 		document.addEventListener("click", async event => {
 			const input = event.target;

cmd/webview/webview_linux_amd64.go

@@ -0,0 +1,35 @@
+// 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.
+
+//go:build linux && amd64
+
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/xiaoqidun/ofdgo/internal/webview"
+)
+
+func main() {
+	dataDir := flag.String("data-dir", "", "browser data directory")
+	flag.Parse()
+	if err := webview.Run(context.Background(), flag.Args(), *dataDir); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}

cmd/webview/webview_unsupported.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !windows || !amd64
+//go:build (!windows && !linux) || !amd64
 
 package main
 

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/go-text/typesetting v0.3.5
 	github.com/tdewolff/canvas v0.0.0-20260923214215-09804640d00c
 	github.com/tdewolff/font v0.0.0-20261010204837-88a7f6b56918
-	github.com/xiaoqidun/guigo v0.0.0-20261019033038-6971953317bb
+	github.com/xiaoqidun/guigo v0.0.0-20261020023410-769328036c38
 	github.com/xiaoqidun/j2kgo v1.0.2
 	github.com/xiaoqidun/jbig2 v1.1.8
 	github.com/xiaoqidun/pdfgo v0.0.0-20261018110224-069b0fe96ea8
@@ -26,6 +26,7 @@ require (
 	github.com/ByteArena/poly2tri-go v0.0.0-20170716161910-d102ad91854f // indirect
 	github.com/benoitkugler/textlayout v0.3.2 // indirect
 	github.com/benoitkugler/textprocessing v0.0.6 // indirect
+	github.com/ebitengine/purego v0.11.2 // indirect
 	github.com/go-fonts/latin-modern v0.3.3 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
 	github.com/srwiley/rasterx v0.0.0-20220730225603-2ab79fcdd4ef // indirect

go.sum

@@ -28,6 +28,8 @@ github.com/benoitkugler/textlayout v0.3.2/go.mod h1:o+1hFV+JSHBC9qNLIuwVoLedERU7
 github.com/benoitkugler/textlayout-testdata v0.1.1/go.mod h1:i/qZl09BbUOtd7Bu/W1CAubRwTWrEXWq6JwMkw8wYxo=
 github.com/benoitkugler/textprocessing v0.0.6 h1:obkMyj62GEPg3xUVYqROlCN22z1OleuZm6ULqX9Om1g=
 github.com/benoitkugler/textprocessing v0.0.6/go.mod h1:Io0gN08/PXEzrSOWFa88xHx2Xv3VjvLMY7H76YoI23A=
+github.com/ebitengine/purego v0.11.2 h1:WWiTx8rD8zYdOwSj8O/NiNbsOvSAgJMTlyV1XlbUSeU=
+github.com/ebitengine/purego v0.11.2/go.mod h1:DCHPP08djqhNSoTfImcnHYQRZmd0qhakvrozqaEYhGQ=
 github.com/emmansun/gmsm v0.45.0 h1:PU/6ObyR3g05YN3jn1L5GZDowzyAi8Xhkq4svzYNyiA=
 github.com/emmansun/gmsm v0.45.0/go.mod h1:HgLSvmdePGLo+Fo2PNgdTQU6lqAepSyriSQJRpECY6w=
 github.com/go-fonts/latin-modern v0.3.3 h1:g2xNgI8yzdNzIVm+qvbMryB6yGPe0pSMss8QT3QwlJ0=
@@ -58,8 +60,8 @@ github.com/tdewolff/parse/v2 v2.8.16 h1:bLk5svUOQRkW/Y2SJ+DeENSIkZBcTIkq+Atyv5D8
 github.com/tdewolff/parse/v2 v2.8.16/go.mod h1:XdsoSFThlVIRIajAuqz1evNY7bagZS8LBOPA3aVopwQ=
 github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
 github.com/tdewolff/test v1.0.12/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
-github.com/xiaoqidun/guigo v0.0.0-20261019033038-6971953317bb h1:MvkeDfZFJvEM5SG+3KM/gOak2sO7WE541ZoKghhcCEY=
-github.com/xiaoqidun/guigo v0.0.0-20261019033038-6971953317bb/go.mod h1:QAHK2Sa/KvY6dO+6dtvVUeOXVQO4Zh8R5oSSU+av7kE=
+github.com/xiaoqidun/guigo v0.0.0-20261020023410-769328036c38 h1:8DQijibcXKHB8EZvGlQ1AfscgH5hThCeIprmPjH6QKc=
+github.com/xiaoqidun/guigo v0.0.0-20261020023410-769328036c38/go.mod h1:xJF8xE6Bjw+NcOZNvWJEVX/XXIkngs3ltc9F6vNcLls=
 github.com/xiaoqidun/j2kgo v1.0.2 h1:OAjjEOfaBaQzBNcj9wx+eM68UI5pewR6SzNZa1R1DIw=
 github.com/xiaoqidun/j2kgo v1.0.2/go.mod h1:DCwAfuDzCDYqUiAlZ7BDwigTjaXw7o9L1FtEma/D1aA=
 github.com/xiaoqidun/jbig2 v1.1.8 h1:dERPW7F8gs18a/DOD9gXHR3fP1Vl6KhCNsLnq5l3BIo=

internal/webview/webview.go

@@ -92,7 +92,7 @@ func Run(ctx context.Context, paths []string, dataDir string) error {
 	h.conversionPool = h.resources.ConversionPool()
 	defer h.close()
 	bindings := make(map[string]guigo.HandlerFunc)
-	for _, name := range []string{"engine.open", "engine.close", "engine.call", "engine.start", "engine.cancel", "engine.finish", "batch", "open", "save", "directory", "file", "release", "child", "remove", "write.begin", "write.data", "write.commit", "write.abort", "fonts", "ready", "title"} {
+	for _, name := range []string{"engine.open", "engine.close", "engine.call", "engine.start", "engine.cancel", "engine.finish", "batch", "open", "save", "directory", "file", "release", "drop.release", "child", "remove", "write.begin", "write.data", "write.commit", "write.abort", "fonts", "ready", "title"} {
 		bindings["ofdgo.host."+name] = func(ctx context.Context, args any) (any, error) { return h.call(ctx, name, args) }
 	}
 	static := http.FileServerFS(webuiassets.NativeFS)
@@ -248,17 +248,22 @@ func (h *Host) emit(name string, value any) {
 func (h *Host) openPaths(names []string) {
 	files := make([]any, 0, len(names))
 	for _, name := range names {
-		handle, err := h.files.add(name, false)
+		file, err := h.files.addDrop(name)
 		if err != nil {
 			h.emit("ofdgo.error", err.Error())
 			continue
 		}
-		file, err := h.files.file(handle["nativeHandle"].(string))
-		if err == nil {
 		files = append(files, file)
 	}
+	h.mu.Lock()
+	w := h.window
+	h.mu.Unlock()
+	if w != nil && w.Emit("ofdgo.files", files) == nil {
+		return
+	}
+	for _, file := range files {
+		h.files.discardDrop(file.(map[string]any)["nativeFile"].(string))
 	}
-	h.emit("ofdgo.files", files)
 }
 
 // call 执行宿主协议并保留业务结果结构
@@ -455,6 +460,9 @@ func (h *Host) call(ctx context.Context, name string, value any) (any, error) {
 	case "release":
 		h.files.release(text("file"))
 		return nil, nil
+	case "drop.release":
+		h.files.discardDrop(text("file"))
+		return nil, nil
 	case "child":
 		value, err := h.files.child(text("handle"), text("name"), flag("directory"), flag("create"))
 		if errors.Is(err, os.ErrNotExist) {
@@ -819,7 +827,11 @@ func windowOptions(dataDir string) (guigo.Options, error) {
 		if err != nil {
 			return guigo.Options{}, err
 		}
-		dataDir = filepath.Join(cache, "OFDGo")
+		name := "ofdgo"
+		if runtime.GOOS == "windows" {
+			name = "OFDGo"
+		}
+		dataDir = filepath.Join(cache, name)
 	}
 	dataDir, err := filepath.Abs(dataDir)
 	if err != nil {

internal/webview/webview_files.go

@@ -47,6 +47,7 @@ type fileEntry struct {
 	saveTarget ofdgo.Output
 	readers    int
 	retired    bool
+	dropHandle string
 }
 
 // fileStore 管理窗口范围内的文件授权和临时数据
@@ -137,6 +138,59 @@ func (s *fileStore) add(name string, directory bool) (map[string]any, error) {
 	return s.descriptor(id), nil
 }
 
+// addDrop 登记拖放文件及读取快照，失败时撤销本次授权
+// 入参: name 拖放文件路径
+// 返回: map[string]any 文件描述, error 登记错误
+func (s *fileStore) addDrop(name string) (map[string]any, error) {
+	handle, err := s.add(name, false)
+	if err != nil {
+		return nil, err
+	}
+	id := handle["nativeHandle"].(string)
+	file, err := s.file(id)
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if err == nil && !s.closed {
+		if entry := s.entries[file["nativeFile"].(string)]; entry != nil && s.entries[id] != nil {
+			entry.dropHandle = id
+			file["drop"] = true
+			return file, nil
+		}
+		err = os.ErrNotExist
+	}
+	delete(s.entries, id)
+	if file != nil {
+		key := file["nativeFile"].(string)
+		if entry := s.entries[key]; entry != nil {
+			delete(s.entries, key)
+			if entry.file != nil {
+				entry.file.Close()
+			}
+		}
+	}
+	if err == nil {
+		err = os.ErrClosed
+	}
+	return nil, err
+}
+
+// discardDrop 撤销未接收的拖放文件及其授权，不删除源文件
+// 入参: id 拖放读取快照标识
+func (s *fileStore) discardDrop(id string) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	entry := s.entries[id]
+	if entry == nil || entry.dropHandle == "" {
+		return
+	}
+	delete(s.entries, entry.dropHandle)
+	delete(s.entries, id)
+	entry.retired = true
+	if entry.file != nil && entry.readers == 0 {
+		entry.file.Close()
+	}
+}
+
 // save 登记用户选择的输出路径
 // 入参: name 输出文件路径
 // 返回: map[string]any 句柄描述

internal/webview/webview_linux.go

@@ -0,0 +1,56 @@
+// 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 webview
+
+import (
+	"os"
+	"strings"
+)
+
+// conversionMemory 未提供系统内存探测时仅按并行数调度
+var conversionMemory func() int64
+
+// fontNameLanguage 获取Linux区域设置对应的OpenType名称表标识
+// 返回: uint16 名称表平台标识, uint16 显示语言标识
+func fontNameLanguage() (uint16, uint16) {
+	locale := ""
+	for _, name := range []string{"LC_ALL", "LC_MESSAGES", "LANG"} {
+		if locale = os.Getenv(name); locale != "" {
+			break
+		}
+	}
+	locale = strings.ToLower(strings.ReplaceAll(locale, "-", "_"))
+	locale, _, _ = strings.Cut(locale, ".")
+	locale, _, _ = strings.Cut(locale, "@")
+	switch locale {
+	case "zh", "zh_cn", "zh_hans":
+		return 3, 0x0804
+	case "zh_hk":
+		return 3, 0x0c04
+	case "zh_mo":
+		return 3, 0x1404
+	case "zh_tw", "zh_hant":
+		return 3, 0x0404
+	case "zh_sg":
+		return 3, 0x1004
+	case "ja", "ja_jp":
+		return 3, 0x0411
+	case "ko", "ko_kr":
+		return 3, 0x0412
+	case "c", "posix", "en", "en_us":
+		return 3, 0x0409
+	}
+	return 0xffff, 0xffff
+}

internal/webview/webview_other.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !windows
+//go:build !windows && !linux
 
 package webview