优化编辑新增界面

lib/pages/epub_reader/reader_renderer.dart

@@ -77,11 +77,17 @@ class ReaderRendererController {
         .toList();
     final propertiesParam = encodedPropertiesList.map((p) => '"$p"').join(',');
     final propertiesJson = '[$propertiesParam]';
+
+    if (Platform.isWindows) {
+      final result = await _rendererState?._readHtmlForUrl(url);
+      if (result != null) {
+        return await webViewController?.loadFrameSrcdoc(
+          'curr', result.$1, result.$2, anchorsJson, propertiesJson,
+        );
+      }
+    }
     return await webViewController?.loadFrame(
-      'curr',
-      url,
-      anchorsJson,
-      propertiesJson,
+      'curr', url, anchorsJson, propertiesJson,
     );
   }
 
@@ -98,11 +104,17 @@ class ReaderRendererController {
         .toList();
     final propertiesParam = encodedPropertiesList.map((p) => '"$p"').join(',');
     final propertiesJson = '[$propertiesParam]';
+
+    if (Platform.isWindows) {
+      final result = await _rendererState?._readHtmlForUrl(url);
+      if (result != null) {
+        return await webViewController?.loadFrameSrcdoc(
+          'next', result.$1, result.$2, anchorsJson, propertiesJson,
+        );
+      }
+    }
     return await webViewController?.loadFrame(
-      'next',
-      url,
-      anchorsJson,
-      propertiesJson,
+      'next', url, anchorsJson, propertiesJson,
     );
   }
 
@@ -119,11 +131,17 @@ class ReaderRendererController {
         .toList();
     final propertiesParam = encodedPropertiesList.map((p) => '"$p"').join(',');
     final propertiesJson = '[$propertiesParam]';
+
+    if (Platform.isWindows) {
+      final result = await _rendererState?._readHtmlForUrl(url);
+      if (result != null) {
+        return await webViewController?.loadFrameSrcdoc(
+          'prev', result.$1, result.$2, anchorsJson, propertiesJson,
+        );
+      }
+    }
     return await webViewController?.loadFrame(
-      'prev',
-      url,
-      anchorsJson,
-      propertiesJson,
+      'prev', url, anchorsJson, propertiesJson,
     );
   }
 
@@ -237,6 +255,16 @@ class _ReaderRendererState extends State<ReaderRenderer>
     );
   }
 
+  /// Read HTML content from EPUB for a given virtual URL (Windows srcdoc approach).
+  /// Returns (htmlContent, baseUrl) or null.
+  Future<(String, String)?> _readHtmlForUrl(String url) async {
+    return await widget.webViewHandler.readHtmlContentWithBaseUrl(
+      epubPath: widget.bookSession.book['file_path'] as String,
+      fileHash: widget.fileHash,
+      url: url,
+    );
+  }
+
   @override
   void initState() {
     super.initState();

lib/pages/epub_reader/reader_screen.dart

@@ -200,7 +200,18 @@ class _ReaderScreenState extends State<ReaderScreen>
       final route = ModalRoute.of(context);
       if (route != null && route.animation != null) {
         routeAnimation = route.animation!;
-        routeAnimation?.addStatusListener(handleRouteAnimationStatus);
+        if (routeAnimation!.isCompleted) {
+          shouldShowWebView = true;
+        } else {
+          routeAnimation?.addStatusListener(handleRouteAnimationStatus);
+          // 安全超时：桌面端路由动画可能不触发 completed，500ms后强制显示
+          Future.delayed(const Duration(milliseconds: 500), () {
+            if (mounted && !shouldShowWebView) {
+              debugPrint('[EPUB-Reader] animation timeout, forcing WebView visible');
+              setState(() { shouldShowWebView = true; });
+            }
+          });
+        }
       } else {
         shouldShowWebView = true;
       }
@@ -268,6 +279,7 @@ class _ReaderScreenState extends State<ReaderScreen>
   }
 
   void handleRouteAnimationStatus(AnimationStatus status) {
+    debugPrint('[EPUB-Reader] animation status: $status');
     if (status == AnimationStatus.completed) {
       setState(() {
         shouldShowWebView = true;

lib/pages/epub_reader/reader_webview.dart

@@ -5,6 +5,7 @@ import 'dart:ui' as ui;
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import '../../main.dart';
 import '../../services/epub/epub_theme.dart';
 import 'book_session.dart';
 import '../../services/epub/epub_webview_handler.dart';
@@ -44,6 +45,16 @@ class ReaderWebViewController {
     return await _webViewState?._loadFrame(frame, url, anchors, properties);
   }
 
+  Future<int?> loadFrameSrcdoc(
+    String frame,
+    String htmlContent,
+    String baseUrl,
+    String anchors,
+    String properties,
+  ) async {
+    return await _webViewState?._loadFrameSrcdoc(frame, htmlContent, baseUrl, anchors, properties);
+  }
+
   Future<void> jumpToPage(int pageIndex) async {
     await _webViewState?._jumpToPage(pageIndex);
   }
@@ -327,6 +338,7 @@ class _ReaderWebViewState extends State<ReaderWebView> {
     if (_isHeadlessInitialized) return;
 
     _headlessWebView = HeadlessInAppWebView(
+      webViewEnvironment: windowsWebViewEnvironment,
       initialData: _generateInitialData(width, height),
       initialSettings: defaultSettings,
       shouldInterceptRequest: _shouldInterceptRequest,
@@ -364,6 +376,14 @@ class _ReaderWebViewState extends State<ReaderWebView> {
     String properties,
   ) => _api.loadFrame(frame, url, anchors, properties);
 
+  Future<int> _loadFrameSrcdoc(
+    String frame,
+    String htmlContent,
+    String baseUrl,
+    String anchors,
+    String properties,
+  ) => _api.loadFrameSrcdoc(frame, htmlContent, baseUrl, anchors, properties);
+
   Future<void> _jumpToPage(int pageIndex) => _api.jumpToPage(pageIndex);
 
   Future<void> _restoreScrollPosition(double ratio) =>
@@ -1113,6 +1133,7 @@ class _ReaderWebViewState extends State<ReaderWebView> {
               child: AbsorbPointer(
                 child: widget.shouldShowWebView
                     ? InAppWebView(
+                        webViewEnvironment: windowsWebViewEnvironment,
                         headlessWebView: _headlessWebView,
                         initialData: _generateInitialData(width, height),
                         initialSettings: defaultSettings,