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基础epub阅读功能

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This commit is contained in:
DelLevin-Home
2026-06-27 11:20:27 +08:00
parent 02242089e8
commit 5acbc3a602
18 changed files with 980 additions and 330 deletions
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412
lib/pages/reader/epub_player.dart
View File

@@ -1,32 +1,67 @@
import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:ui';
import 'package:battery_plus/battery_plus.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:provider/provider.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:wakelock_plus/wakelock_plus.dart';
import '../../models/reader_book.dart';
import '../../providers/app_provider.dart';
import '../../service/book_server.dart';
import '../../utils/reader/book_file_helper.dart';
import '../../utils/reader/coordinates_to_part.dart';
import '../../utils/reader/reader_url_generator.dart';
/// 目录条目
class TocItem {
final String href;
final String title;
final int level;
TocItem({required this.href, required this.title});
TocItem({required this.href, required this.title, this.level = 1});
factory TocItem.fromJson(Map<String, dynamic> json) {
return TocItem(
href: json['href'] ?? '',
title: json['title'] ?? '',
title: json['label'] ?? json['title'] ?? '',
level: json['level'] as int? ?? 1,
);
}
}
/// 递归展平嵌套目录
List<TocItem> _flattenToc(List<dynamic> items, [int level = 1]) {
final result = <TocItem>[];
for (final item in items) {
if (item is Map) {
final map = Map<String, dynamic>.from(item);
result.add(TocItem(
href: map['href'] ?? '',
title: map['label'] ?? map['title'] ?? '',
level: level,
));
if (map['subitems'] is List && (map['subitems'] as List).isNotEmpty) {
result.addAll(_flattenToc(map['subitems'] as List, level + 1));
}
}
}
return result;
}
/// 翻页区域动作
enum PageTurnAction { prev, next, menu, none }
/// 默认九宫格布局（中间菜单，左右翻页）
const List<PageTurnAction> _defaultZoneActions = [
PageTurnAction.prev, PageTurnAction.menu, PageTurnAction.next,
PageTurnAction.prev, PageTurnAction.menu, PageTurnAction.next,
PageTurnAction.prev, PageTurnAction.menu, PageTurnAction.next,
];
/// 核心电子书阅读组件 — 使用 InAppWebView 渲染 foliate-js 阅读器
class EpubPlayer extends StatefulWidget {
final ReaderBook book;
@@ -51,14 +86,24 @@ class EpubPlayerState extends State<EpubPlayer> {
String cfi = '';
double percentage = 0.0;
String chapterTitle = '';
String chapterHref = '';
int chapterCurrentPage = 0;
int chapterTotalPages = 0;
Timer? _styleTimer;
// 浏览历史
bool _showHistory = false;
bool _canGoBack = false;
bool _canGoForward = false;
// 滚轮翻页
Timer? _scrollDebounceTimer;
double _accumulatedScrollDelta = 0;
static const double _scrollThreshold = 50.0;
InAppWebViewSettings get _settings => InAppWebViewSettings(
supportZoom: false,
transparentBackground: true,
isInspectable: kDebugMode,
useHybridComposition: true,
mixedContentMode: MixedContentMode.MIXED_CONTENT_ALWAYS_ALLOW,
);
@@ -93,40 +138,14 @@ class EpubPlayerState extends State<EpubPlayer> {
_controller.evaluateJavascript(source: "goToCfi('$cfi')");
}
// ─── 样式方法 ───────────────────────────────────────
// ─── 历史导航 ───────────────────────────────────────
void changeStyle({
double? fontSize,
double? lineHeight,
double? paragraphSpacing,
String? fontColor,
String? backgroundColor,
}) {
_styleTimer?.cancel();
_styleTimer = Timer(const Duration(milliseconds: 200), () {
if (!mounted) return;
final params = <String, dynamic>{};
if (fontSize != null) params['fontSize'] = (fontSize * 100).round();
if (lineHeight != null) params['spacing'] = lineHeight;
if (paragraphSpacing != null) params['paragraphSpacing'] = paragraphSpacing;
if (fontColor != null) params['fontColor'] = '#$fontColor';
if (backgroundColor != null) params['backgroundColor'] = '#$backgroundColor';
if (params.isEmpty) return;
final jsonParams = jsonEncode(params);
_controller.evaluateJavascript(source: 'changeStyle($jsonParams)');
});
void backHistory() {
_controller.evaluateJavascript(source: 'back()');
}
void changeTheme(String bgColor, String textColor) {
_controller.evaluateJavascript(source: '''
changeStyle({
backgroundColor: '#$bgColor',
fontColor: '#$textColor',
})
''');
void forwardHistory() {
_controller.evaluateJavascript(source: 'forward()');
}
// ─── 保存进度 ───────────────────────────────────────
@@ -142,71 +161,168 @@ class EpubPlayerState extends State<EpubPlayer> {
await provider.updateReaderBook(updated);
}
// ─── 翻页区域处理 ──────────────────────────────────
void _onClick(Map<String, dynamic> location) {
final x = (location['x'] as num).toDouble();
final y = (location['y'] as num).toDouble();
final part = coordinatesToPart(x, y);
final action = _defaultZoneActions[part];
switch (action) {
case PageTurnAction.prev:
prevPage();
break;
case PageTurnAction.next:
nextPage();
break;
case PageTurnAction.menu:
widget.showOrHideToolbar();
break;
case PageTurnAction.none:
break;
}
}
// ─── 滚轮翻页 ──────────────────────────────────────
Future<void> _handlePointerEvents(PointerEvent event) async {
if (event is! PointerScrollEvent) return;
_accumulatedScrollDelta += event.scrollDelta.dy;
_scrollDebounceTimer?.cancel();
_scrollDebounceTimer = Timer(const Duration(milliseconds: 80), () {
if (_accumulatedScrollDelta.abs() >= _scrollThreshold) {
if (_accumulatedScrollDelta > 0) {
nextPage();
} else {
prevPage();
}
}
_accumulatedScrollDelta = 0;
});
}
// ─── 外部链接处理 ──────────────────────────────────
Future<void> _handleExternalLink(dynamic rawLink) async {
String? link;
if (rawLink is String && rawLink.trim().isNotEmpty) {
link = rawLink.trim();
} else if (rawLink is Map && rawLink['href'] is String) {
link = (rawLink['href'] as String).trim();
}
if (!mounted || link == null || link.isEmpty) return;
final uri = Uri.tryParse(link);
if (uri == null || uri.scheme.isEmpty || uri.scheme == 'javascript') return;
final shouldOpen = await showDialog<bool>(
context: context,
builder: (ctx) => AlertDialog(
title: const Text('打开外部链接'),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text('是否在浏览器中打开以下链接？'),
const SizedBox(height: 8),
SelectableText(link!, style: const TextStyle(fontSize: 13)),
],
),
actions: [
TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')),
TextButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('打开')),
],
),
);
if (shouldOpen == true) {
await launchUrl(uri, mode: LaunchMode.externalApplication);
}
}
// ─── WebView 回调 ───────────────────────────────────
Future<void> _onWebViewCreated(InAppWebViewController controller) async {
if (Platform.isAndroid) {
await InAppWebViewController.setWebContentsDebuggingEnabled(true);
}
_controller = controller;
_setHandlers(controller);
// 开启常亮
WakelockPlus.enable();
}
void _setHandlers(InAppWebViewController controller) {
// 阅读位置变化
controller.addJavaScriptHandler(
handlerName: 'onLoadEnd',
callback: (args) {},
);
controller.addJavaScriptHandler(
handlerName: 'onRelocated',
callback: (args) {
final location = args[0] as Map<String, dynamic>;
if (cfi == location['cfi']) return;
setState(() {
cfi = location['cfi'] ?? '';
percentage = double.tryParse(location['percentage']?.toString() ?? '0') ?? 0.0;
chapterTitle = location['chapterTitle'] ?? '';
chapterHref = location['chapterHref'] ?? '';
chapterCurrentPage = location['chapterCurrentPage'] ?? 0;
chapterTotalPages = location['chapterTotalPages'] ?? 0;
});
saveReadingProgress();
},
);
// 点击事件（控制翻页和工具栏）
controller.addJavaScriptHandler(
handlerName: 'onClick',
callback: (args) {
final location = args[0] as Map<String, dynamic>;
final x = location['x'] as num?;
final y = location['y'] as num?;
if (x == null || y == null) return;
final pageWidth = MediaQuery.of(context).size.width;
final clickX = x.toDouble() * pageWidth;
final oneThird = pageWidth / 3;
final twoThird = pageWidth * 2 / 3;
if (clickX < oneThird) {
prevPage();
} else if (clickX > twoThird) {
nextPage();
} else {
widget.showOrHideToolbar();
}
_onClick(location);
},
);
controller.addJavaScriptHandler(
handlerName: 'onExternalLink',
callback: (args) async {
await _handleExternalLink(args.isNotEmpty ? args.first : null);
},
);
// 目录数据
controller.addJavaScriptHandler(
handlerName: 'onSetToc',
callback: (args) {
final List<dynamic> rawToc = args[0];
final toc = rawToc.map((item) {
if (item is Map) {
return TocItem.fromJson(Map<String, dynamic>.from(item));
}
return TocItem(href: '', title: item.toString());
}).toList();
final toc = _flattenToc(rawToc);
widget.onTocReady?.call(toc);
},
);
// 翻页上拉手势
// 以下 handler 保留注册以避免 JS 端报错，但不做处理
controller.addJavaScriptHandler(handlerName: 'onSelectionEnd', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'onSelectionCleared', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'onAnnotationClick', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'onSearch', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'renderAnnotations', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'onImageClick', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'onFootnoteClose', callback: (args) {});
controller.addJavaScriptHandler(handlerName: 'handleBookmark', callback: (args) {});
controller.addJavaScriptHandler(
handlerName: 'onPushState',
callback: (args) {
final state = args[0] as Map<String, dynamic>;
if (!mounted) return;
setState(() {
_canGoBack = state['canGoBack'] ?? false;
_canGoForward = state['canGoForward'] ?? false;
_showHistory = _canGoBack || _canGoForward;
});
},
);
controller.addJavaScriptHandler(
handlerName: 'onPullUp',
callback: (args) {
@@ -217,45 +333,169 @@ class EpubPlayerState extends State<EpubPlayer> {
@override
void dispose() {
_styleTimer?.cancel();
_scrollDebounceTimer?.cancel();
saveReadingProgress();
WakelockPlus.disable();
super.dispose();
}
// ─── 阅读信息浮层 ──────────────────────────────────
Widget _buildReadingInfo() {
if (chapterCurrentPage == 0 && percentage == 0.0) {
return const SizedBox.shrink();
}
final isDark = Theme.of(context).brightness == Brightness.dark;
final infoColor = isDark ? Colors.white.withAlpha(130) : Colors.black.withAlpha(130);
final infoStyle = TextStyle(color: infoColor, fontSize: 10);
return IgnorePointer(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.only(top: 50, left: 16, right: 16),
child: Text(
chapterTitle.isNotEmpty ? chapterTitle : widget.book.title,
style: infoStyle,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
),
const Spacer(),
Padding(
padding: const EdgeInsets.only(bottom: 24, left: 16, right: 16),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text('$chapterCurrentPage/$chapterTotalPages', style: infoStyle),
Text('${(percentage * 100).toStringAsFixed(1)}%', style: infoStyle),
_buildBatteryWidget(infoColor),
_buildClockWidget(infoStyle),
],
),
),
],
),
);
}
Widget _buildBatteryWidget(Color color) {
return FutureBuilder<int>(
future: Battery().batteryLevel,
builder: (context, snapshot) {
if (!snapshot.hasData) return const SizedBox.shrink();
return Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(Icons.battery_std, size: 12, color: color),
const SizedBox(width: 2),
Text('${snapshot.data}%', style: TextStyle(color: color, fontSize: 10)),
],
);
},
);
}
Widget _buildClockWidget(TextStyle style) {
return StreamBuilder<DateTime>(
stream: Stream.periodic(const Duration(seconds: 30), (_) => DateTime.now()),
builder: (context, snapshot) {
final now = snapshot.data ?? DateTime.now();
return Text(
'${now.hour.toString().padLeft(2, '0')}:${now.minute.toString().padLeft(2, '0')}',
style: style,
);
},
);
}
// ─── 历史导航胶囊 ──────────────────────────────────
Widget _buildHistoryCapsule() {
final colors = Theme.of(context).colorScheme;
final buttonStyle = TextButton.styleFrom(
minimumSize: const Size(0, 32),
tapTargetSize: MaterialTapTargetSize.shrinkWrap,
padding: const EdgeInsets.symmetric(horizontal: 16),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(32)),
);
Widget btn(IconData icon, String label, VoidCallback onPressed) {
return TextButton.icon(
icon: Icon(icon, size: 18, color: colors.onSurface.withAlpha(180)),
label: Text(label, style: TextStyle(color: colors.onSurface.withAlpha(180), fontSize: 14)),
onPressed: onPressed,
style: buttonStyle,
);
}
final buttons = <Widget>[];
if (_canGoBack) buttons.add(btn(Icons.arrow_back, '返回', backHistory));
buttons.add(btn(Icons.close, '关闭', () => setState(() => _showHistory = false)));
if (_canGoForward) buttons.add(btn(Icons.arrow_forward, '前进', forwardHistory));
return Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.only(bottom: 40),
child: ClipRRect(
borderRadius: BorderRadius.circular(32),
child: BackdropFilter(
filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
child: Container(
height: 32,
decoration: BoxDecoration(
color: colors.surfaceContainer.withAlpha(123),
borderRadius: BorderRadius.circular(32),
border: Border.all(color: colors.outline, width: 0.5),
),
child: Row(mainAxisSize: MainAxisSize.min, children: buttons),
),
),
),
),
);
}
@override
Widget build(BuildContext context) {
final isDark = Theme.of(context).brightness == Brightness.dark;
final fileAbsolute = BookFileHelper.instance.resolveAbsolutePath(widget.book.filePath);
final fileExists = fileAbsolute.isNotEmpty && File(fileAbsolute).existsSync();
final bookUrl = 'http://127.0.0.1:${Server().port}/book/${Uri.encodeComponent(fileAbsolute)}';
final initialCfi = widget.initialCfi ?? widget.book.lastReadCfi;
final bgColor = isDark ? 'FF1A1A1A' : 'FFFFFFFF';
final textColor = isDark ? 'FFE5E5E5' : 'FF1A1A1A';
final url = generateReaderUrl(
fileUrl: bookUrl,
cfi: initialCfi,
backgroundColor: bgColor,
textColor: textColor,
isDarkMode: isDark,
backgroundColor: 'FFFBFBF3',
textColor: 'FF343434',
);
debugPrint('[EpubPlayer] port=${Server().port} running=${Server().isRunning}');
debugPrint('[EpubPlayer] fileAbsolute=$fileAbsolute exists=$fileExists');
return InAppWebView(
initialUrlRequest: URLRequest(url: WebUri(url)),
initialSettings: _settings,
onWebViewCreated: _onWebViewCreated,
onReceivedError: (controller, request, error) {
debugPrint('[EpubPlayer] WebView error: ${error.description}');
},
onConsoleMessage: (controller, msg) {
debugPrint('[EpubPlayer] JS: ${msg.message}');
},
return Listener(
onPointerSignal: _handlePointerEvents,
child: Scaffold(
resizeToAvoidBottomInset: false,
body: Stack(
children: [
SizedBox.expand(
child: InAppWebView(
initialUrlRequest: URLRequest(url: WebUri(url)),
initialSettings: _settings,
onWebViewCreated: _onWebViewCreated,
onReceivedError: (controller, request, error) {
debugPrint('[EpubPlayer] WebView error: ${error.description}');
},
onConsoleMessage: (controller, msg) {
debugPrint('[EpubPlayer] JS: ${msg.message}');
},
),
),
_buildReadingInfo(),
if (_showHistory) _buildHistoryCapsule(),
],
),
),
);
}
}

137
lib/pages/reader/reading_page.dart
View File

@@ -4,10 +4,10 @@ import 'package:pointer_interceptor/pointer_interceptor.dart';
import '../../models/reader_book.dart';
import '../../service/book_server.dart';
import '../../utils/reader/book_file_helper.dart';
import '../../widgets/reader/reading_notes_panel.dart';
import 'epub_player.dart';
import 'toc_drawer.dart';
import 'progress_panel.dart';
import 'style_panel.dart';
/// 书籍阅读页面
class ReadingPage extends StatefulWidget {
@@ -22,12 +22,12 @@ class ReadingPage extends StatefulWidget {
class _ReadingPageState extends State<ReadingPage> {
final GlobalKey<EpubPlayerState> _epubPlayerKey = GlobalKey<EpubPlayerState>();
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
final FocusNode _readerFocusNode = FocusNode();
static const _empty = SizedBox.shrink();
bool _toolbarOffstage = true; // true=隐藏, false=显示
bool _toolbarOffstage = true;
Widget _currentPage = const SizedBox.shrink();
bool _serverReady = false;
List<TocItem> _toc = [];
@override
@@ -35,6 +35,9 @@ class _ReadingPageState extends State<ReadingPage> {
super.initState();
_initServer();
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
WidgetsBinding.instance.addPostFrameCallback((_) {
_readerFocusNode.requestFocus();
});
}
Future<void> _initServer() async {
@@ -47,15 +50,12 @@ class _ReadingPageState extends State<ReadingPage> {
void dispose() {
_epubPlayerKey.currentState?.saveReadingProgress();
Server().stop();
_readerFocusNode.dispose();
SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
super.dispose();
}
void _showToolbar() {
setState(() {
_toolbarOffstage = false;
});
}
void _showToolbar() => setState(() => _toolbarOffstage = false);
void _hideToolbar() {
setState(() {
@@ -64,13 +64,7 @@ class _ReadingPageState extends State<ReadingPage> {
});
}
void _toggleToolbar() {
if (_toolbarOffstage) {
_showToolbar();
} else {
_hideToolbar();
}
}
void _toggleToolbar() => _toolbarOffstage ? _showToolbar() : _hideToolbar();
void _onTocReady(List<TocItem> toc) {
if (mounted) setState(() => _toc = toc);
@@ -81,48 +75,62 @@ class _ReadingPageState extends State<ReadingPage> {
_scaffoldKey.currentState?.openDrawer();
}
// ─── 底部面板切换 ─────────────────────────────────────
void _onProgressPressed() {
setState(() {
_currentPage = ProgressPanel(epubPlayerKey: _epubPlayerKey);
});
void _setPanel(Widget panel) {
setState(() => _currentPage = panel);
}
void _onStylePressed() {
setState(() {
_currentPage = StylePanel(epubPlayerKey: _epubPlayerKey);
});
// ─── 键盘快捷键 ──────────────────────────────────
KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
if (event is! KeyDownEvent) return KeyEventResult.ignored;
final key = event.logicalKey;
if (key == LogicalKeyboardKey.arrowRight ||
key == LogicalKeyboardKey.arrowDown ||
key == LogicalKeyboardKey.pageDown ||
key == LogicalKeyboardKey.space) {
_epubPlayerKey.currentState?.nextPage();
return KeyEventResult.handled;
}
if (key == LogicalKeyboardKey.arrowLeft ||
key == LogicalKeyboardKey.arrowUp ||
key == LogicalKeyboardKey.pageUp) {
_epubPlayerKey.currentState?.prevPage();
return KeyEventResult.handled;
}
if (key == LogicalKeyboardKey.enter) {
_toggleToolbar();
return KeyEventResult.handled;
}
if (key == LogicalKeyboardKey.escape && !_toolbarOffstage) {
_hideToolbar();
return KeyEventResult.handled;
}
return KeyEventResult.ignored;
}
// ─── 构建 ──────────────────────────────────────────
@override
Widget build(BuildContext context) {
final colors = Theme.of(context).colorScheme;
// ─── 工具栏覆盖层（照抄 anx-reader 的 Offstage + PointerInterceptor 模式）
Offstage controller = Offstage(
final toolbar = Offstage(
offstage: _toolbarOffstage,
child: PointerInterceptor(
child: Stack(
children: [
// 半透明背景，点击关闭工具栏
Positioned.fill(
child: GestureDetector(
onTap: _hideToolbar,
behavior: HitTestBehavior.opaque,
onVerticalDragUpdate: (details) {},
onVerticalDragEnd: (details) {},
child: Container(
color: Colors.black.withValues(alpha: 0.15),
),
child: Container(color: Colors.black.withAlpha(38)),
),
),
// 顶部 AppBar + 底部工具栏
Column(
children: [
// 顶部 AppBar
AppBar(
backgroundColor: colors.surface.withValues(alpha: 0.94),
backgroundColor: colors.surface.withAlpha(240),
title: Text(widget.book.title, overflow: TextOverflow.ellipsis),
leading: IconButton(
icon: const Icon(Icons.arrow_back),
@@ -130,7 +138,6 @@ class _ReadingPageState extends State<ReadingPage> {
),
),
const Spacer(),
// 底部面板 + 按钮行
BottomSheet(
onClosing: () {},
enableDrag: false,
@@ -145,14 +152,10 @@ class _ReadingPageState extends State<ReadingPage> {
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
// 面板内容区域
if (hasContent)
Expanded(
child: SingleChildScrollView(
child: _currentPage,
),
child: SingleChildScrollView(child: _currentPage),
),
// 按钮行
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
@@ -162,20 +165,20 @@ class _ReadingPageState extends State<ReadingPage> {
onPressed: _openTocDrawer,
),
IconButton(
icon: const Icon(Icons.data_usage),
tooltip: '进度',
icon: const Icon(Icons.edit_note),
tooltip: '笔记',
onPressed: () {
modalSetState(() {
_onProgressPressed();
_setPanel(_buildNotesPanel());
});
},
),
IconButton(
icon: const Icon(Icons.color_lens),
tooltip: '样式',
icon: const Icon(Icons.data_usage),
tooltip: '进度',
onPressed: () {
modalSetState(() {
_onStylePressed();
_setPanel(ProgressPanel(epubPlayerKey: _epubPlayerKey));
});
},
),
@@ -213,7 +216,6 @@ class _ReadingPageState extends State<ReadingPage> {
return Scaffold(
key: _scaffoldKey,
backgroundColor: colors.surface,
// TOC 目录抽屉
drawer: PointerInterceptor(
child: Drawer(
width: MediaQuery.of(context).size.width * 0.75,
@@ -224,20 +226,33 @@ class _ReadingPageState extends State<ReadingPage> {
),
),
body: _serverReady
? Stack(
children: [
// 阅读内容（WebView）
EpubPlayer(
key: _epubPlayerKey,
book: widget.book,
showOrHideToolbar: _toggleToolbar,
onTocReady: _onTocReady,
),
// 工具栏覆盖层
controller,
],
? Focus(
focusNode: _readerFocusNode,
onKeyEvent: _handleKeyEvent,
autofocus: true,
child: Stack(
children: [
EpubPlayer(
key: _epubPlayerKey,
book: widget.book,
showOrHideToolbar: _toggleToolbar,
onTocReady: _onTocReady,
),
toolbar,
],
),
)
: const Center(child: CircularProgressIndicator()),
);
}
Widget _buildNotesPanel() {
return ReadingNotesPanel(
bookId: widget.book.id,
onNavigate: (cfi) {
_hideToolbar();
_epubPlayerKey.currentState?.goToCfi(cfi);
},
);
}
}

162
lib/pages/reader/style_panel.dart
View File

@@ -1,162 +0,0 @@
import 'package:flutter/material.dart';
import '../../utils/user_prefs.dart';
import 'epub_player.dart';
/// 预设主题
const _presetThemes = [
{'bg': 'FFFFFFFF', 'fg': 'FF1A1A1A', 'name': '默认'},
{'bg': 'FF1A1A1A', 'fg': 'FFE5E5E5', 'name': '暗黑'},
{'bg': 'FFF8F0E3', 'fg': 'FF333333', 'name': '护眼'},
{'bg': 'FF2B2B2B', 'fg': 'FFCCCCCC', 'name': '深灰'},
{'bg': 'FF2D3E50', 'fg': 'FFD4D4D4', 'name': '蓝灰'},
];
/// 样式设置面板 — 字号、行距、主题
class StylePanel extends StatefulWidget {
final GlobalKey<EpubPlayerState> epubPlayerKey;
const StylePanel({super.key, required this.epubPlayerKey});
@override
State<StylePanel> createState() => _StylePanelState();
}
class _StylePanelState extends State<StylePanel> {
double _fontSize = 1.0;
double _lineHeight = 1.6;
int _selectedTheme = 0;
@override
void initState() {
super.initState();
_loadPrefs();
}
void _loadPrefs() {
final sp = UserPrefs().prefs;
setState(() {
_fontSize = sp.getDouble('reader_font_size') ?? 1.0;
_lineHeight = sp.getDouble('reader_line_height') ?? 1.6;
_selectedTheme = sp.getInt('reader_theme_index') ?? 0;
});
}
void _savePrefs() {
final sp = UserPrefs().prefs;
sp.setDouble('reader_font_size', _fontSize);
sp.setDouble('reader_line_height', _lineHeight);
sp.setInt('reader_theme_index', _selectedTheme);
}
void _applyStyle() {
widget.epubPlayerKey.currentState?.changeStyle(
fontSize: _fontSize,
lineHeight: _lineHeight,
);
_savePrefs();
}
void _applyTheme(int index) {
final theme = _presetThemes[index];
final bg = theme['bg']!;
final fg = theme['fg']!;
widget.epubPlayerKey.currentState?.changeTheme(bg, fg);
setState(() => _selectedTheme = index);
_savePrefs();
}
@override
Widget build(BuildContext context) {
final colors = Theme.of(context).colorScheme;
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
// 字号
Row(
children: [
Text('字号', style: TextStyle(fontSize: 13, color: colors.onSurface.withValues(alpha: 0.6))),
Expanded(
child: Slider(
value: _fontSize,
min: 0.5,
max: 3.0,
divisions: 25,
label: '${(_fontSize * 100).round()}%',
onChanged: (value) {
setState(() => _fontSize = value);
_applyStyle();
},
),
),
SizedBox(
width: 44,
child: Text('${(_fontSize * 100).round()}%',
textAlign: TextAlign.end,
style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.5))),
),
],
),
// 行距
Row(
children: [
Text('行距', style: TextStyle(fontSize: 13, color: colors.onSurface.withValues(alpha: 0.6))),
Expanded(
child: Slider(
value: _lineHeight,
min: 1.0,
max: 3.0,
divisions: 20,
label: _lineHeight.toStringAsFixed(1),
onChanged: (value) {
setState(() => _lineHeight = value);
_applyStyle();
},
),
),
SizedBox(
width: 44,
child: Text(_lineHeight.toStringAsFixed(1),
textAlign: TextAlign.end,
style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.5))),
),
],
),
const SizedBox(height: 8),
// 主题色块
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: List.generate(_presetThemes.length, (index) {
final theme = _presetThemes[index];
final bg = Color(int.parse(theme['bg']!, radix: 16));
final fg = Color(int.parse(theme['fg']!, radix: 16));
final isSelected = index == _selectedTheme;
return GestureDetector(
onTap: () => _applyTheme(index),
child: Container(
width: 42,
height: 42,
margin: const EdgeInsets.symmetric(horizontal: 6),
decoration: BoxDecoration(
color: bg,
borderRadius: BorderRadius.circular(21),
border: Border.all(
color: isSelected ? colors.primary : colors.outlineVariant,
width: isSelected ? 2.5 : 1,
),
),
child: Center(
child: Text('A', style: TextStyle(color: fg, fontSize: 16, fontWeight: FontWeight.w500)),
),
),
);
}),
),
],
),
);
}
}

12
lib/pages/reader/toc_drawer.dart
View File

@@ -28,7 +28,7 @@ class TocDrawer extends StatelessWidget {
padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
child: Row(
children: [
Icon(Icons.toc, size: 20, color: colors.onSurface.withValues(alpha: 0.6)),
Icon(Icons.toc, size: 20, color: colors.onSurfaceVariant),
const SizedBox(width: 10),
Text('目录', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: colors.onSurface)),
const Spacer(),
@@ -43,25 +43,27 @@ class TocDrawer extends StatelessWidget {
Expanded(
child: toc.isEmpty
? Center(
child: Text('暂无目录', style: TextStyle(color: colors.onSurface.withValues(alpha: 0.3))),
child: Text('暂无目录', style: TextStyle(color: colors.onSurfaceVariant)),
)
: ListView.builder(
padding: const EdgeInsets.symmetric(vertical: 8),
itemCount: toc.length,
itemBuilder: (context, index) {
final item = toc[index];
final indent = (item.level - 1) * 16.0;
return InkWell(
onTap: () {
epubPlayerKey.currentState?.goToHref(item.href);
Navigator.pop(context);
},
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
padding: EdgeInsets.only(left: 20 + indent, right: 20, top: 12, bottom: 12),
child: Text(
item.title,
style: TextStyle(
fontSize: 14,
color: colors.onSurface.withValues(alpha: 0.8),
fontSize: item.level == 1 ? 14 : 13,
fontWeight: item.level == 1 ? FontWeight.w500 : FontWeight.normal,
color: colors.onSurface.withAlpha(204),
),
),
),