generated from dellevin/template
594 lines
22 KiB
Dart
594 lines
22 KiB
Dart
import 'dart:io' show Platform;
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import 'package:flutter/material.dart';
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import 'package:file_picker/file_picker.dart';
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import '../../data/epub/reader_dao.dart';
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import '../../services/epub/epub_service.dart';
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import '../../utils/user_prefs.dart';
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import '../../utils/toast_util.dart';
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import '../../utils/responsive.dart';
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import '../../widgets/fade_in_local_image.dart';
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import '../../widgets/shimmer_skeleton.dart';
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import 'epub_detail_page.dart';
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import 'widgets/book_grid_item.dart';
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/// EPUB 书架页面
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class EpubLibraryPage extends StatefulWidget {
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const EpubLibraryPage({super.key});
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@override
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State<EpubLibraryPage> createState() => _EpubLibraryPageState();
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}
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class _EpubLibraryPageState extends State<EpubLibraryPage> {
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final ReaderDao _dao = ReaderDao();
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final EpubService _service = EpubService();
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List<Map<String, dynamic>> _books = [];
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List<Map<String, dynamic>> _filteredBooks = [];
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bool _isLoading = true;
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bool _isSearching = false;
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final TextEditingController _searchCtrl = TextEditingController();
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int _sortMode = UserPrefs().epubSortMode;
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int _viewMode = UserPrefs().epubViewMode; // 0=列表 1=网格
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@override
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void initState() {
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super.initState();
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_loadBooks();
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}
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Future<void> _loadBooks() async {
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if (mounted) setState(() => _isLoading = true);
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final books = await _dao.getAllReaderBooks(sortMode: _sortMode);
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if (mounted) {
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setState(() {
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_books = books;
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_isLoading = false;
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_applyFilter();
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});
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}
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}
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void _applyFilter() {
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final query = _searchCtrl.text.trim().toLowerCase();
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if (query.isEmpty) {
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_filteredBooks = _books;
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} else {
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_filteredBooks = _books.where((b) {
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final title = (b['title'] as String? ?? '').toLowerCase();
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final author = (b['author'] as String? ?? '').toLowerCase();
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return title.contains(query) || author.contains(query);
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}).toList();
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}
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}
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void _onSearchChanged() {
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setState(() => _applyFilter());
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}
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void _toggleSearch() {
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setState(() {
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_isSearching = !_isSearching;
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if (!_isSearching) {
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_searchCtrl.clear();
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_applyFilter();
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}
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});
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}
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Future<void> _pickAndImport() async {
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final result = await FilePicker.platform.pickFiles(
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type: FileType.custom,
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allowedExtensions: ['epub'],
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);
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if (result == null || result.files.isEmpty) return;
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final path = result.files.single.path;
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if (path == null) return;
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if (!path.toLowerCase().endsWith('.epub')) {
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if (mounted) {
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ToastUtil.show(context, '\u4EC5\u652F\u6301\u5BFC\u5165 .epub \u683C\u5F0F\u7684\u6587\u4EF6');
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}
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return;
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}
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if (!mounted) return;
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showDialog(
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context: context,
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barrierDismissible: false,
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builder: (_) => const Center(child: CircularProgressIndicator()),
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);
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final imported = await _service.importBook(path);
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if (mounted) Navigator.pop(context);
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if (imported != null) {
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await _loadBooks();
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} else if (mounted) {
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ToastUtil.show(context, 'EPUB \u89E3\u6790\u5931\u8D25\uFF0C\u8BF7\u68C0\u67E5\u6587\u4EF6');
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}
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}
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Future<void> _deleteBook(Map<String, dynamic> book) async {
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final colors = Theme.of(context).colorScheme;
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final confirm = await showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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backgroundColor: colors.surface,
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elevation: 0,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
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title: Text('删除书籍',
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style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: colors.onSurface)),
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content: Text('确定删除《${book['title']}》？',
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style: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.6), height: 1.5)),
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actionsPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
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actions: [
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TextButton(
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style: TextButton.styleFrom(
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foregroundColor: colors.onSurface.withValues(alpha: 0.6),
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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),
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onPressed: () => Navigator.pop(ctx, false),
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child: const Text('取消'),
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),
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ElevatedButton(
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style: ElevatedButton.styleFrom(
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backgroundColor: colors.error,
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foregroundColor: colors.onError,
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elevation: 0,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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),
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onPressed: () => Navigator.pop(ctx, true),
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child: const Text('删除'),
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),
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],
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),
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);
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if (confirm == true) {
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await _service.deleteBook(book['id']);
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await _loadBooks();
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}
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}
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void _openBook(Map<String, dynamic> book) {
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => EpubDetailPage(bookId: book['id'], book: book),
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),
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).then((_) {
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if (mounted) _loadBooks();
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});
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}
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void _showSortMenu() {
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final colors = Theme.of(context).colorScheme;
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final options = [
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(0, '按更新时间排序', Icons.update),
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(1, '按创建时间排序', Icons.calendar_today_outlined),
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(2, '按阅读进度排序', Icons.auto_stories_outlined),
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(3, '按书名排序', Icons.sort_by_alpha),
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];
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showModalBottomSheet(
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context: context,
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backgroundColor: colors.surface,
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(16))),
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builder: (ctx) => SafeArea(
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child: Column(mainAxisSize: MainAxisSize.min, children: [
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Container(width: 36, height: 4, margin: const EdgeInsets.only(top: 12, bottom: 16),
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decoration: BoxDecoration(color: colors.onSurface.withValues(alpha: 0.15), borderRadius: BorderRadius.circular(2))),
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Align(alignment: Alignment.centerLeft, child: Padding(padding: const EdgeInsets.symmetric(horizontal: 20),
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child: Text('书架排序', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: colors.onSurface)))),
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const SizedBox(height: 8),
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for (int i = 0; i < options.length; i++) ...[
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if (i > 0) Divider(height: 0.5, indent: 20, endIndent: 20, color: colors.outlineVariant),
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_sortOption(ctx, options[i].$1, options[i].$2, options[i].$3, colors),
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],
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const SizedBox(height: 12),
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]),
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),
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);
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}
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Widget _sortOption(BuildContext ctx, int value, String label, IconData icon, ColorScheme colors) {
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final selected = _sortMode == value;
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return ListTile(
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contentPadding: const EdgeInsets.symmetric(horizontal: 20),
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leading: Container(width: 36, height: 36, decoration: BoxDecoration(color: colors.surfaceContainerHighest, borderRadius: BorderRadius.circular(10)),
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child: Icon(icon, size: 20, color: selected ? colors.primary : colors.onSurface.withValues(alpha: 0.6))),
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title: Text(label, style: TextStyle(fontSize: 14, fontWeight: selected ? FontWeight.w600 : FontWeight.w400, color: colors.onSurface)),
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trailing: selected ? Icon(Icons.check, size: 20, color: colors.primary) : null,
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onTap: () {
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Navigator.pop(ctx);
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if (_sortMode != value) {
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setState(() => _sortMode = value);
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UserPrefs().setEpubSortMode(value);
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_loadBooks();
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}
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},
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);
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}
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@override
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void dispose() {
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_searchCtrl.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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final colors = Theme.of(context).colorScheme;
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final isWin = Platform.isWindows;
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return Scaffold(
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backgroundColor: colors.surface,
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appBar: isWin ? null : AppBar(
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backgroundColor: colors.surface,
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elevation: 0,
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title: _isSearching
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? TextField(
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controller: _searchCtrl,
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autofocus: true,
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style: TextStyle(fontSize: 16, color: colors.onSurface),
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decoration: InputDecoration(
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hintText: '搜索书名或作者',
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hintStyle: TextStyle(color: colors.onSurface.withValues(alpha: 0.35)),
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border: InputBorder.none,
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),
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onChanged: (_) => _onSearchChanged(),
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)
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: Text('EPUB 阅读',
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style: TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: colors.onSurface)),
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leading: IconButton(
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icon: Icon(_isSearching ? Icons.close : Icons.arrow_back, size: 20),
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onPressed: _isSearching ? _toggleSearch : () => Navigator.pop(context),
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),
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actions: _buildActions(colors),
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),
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body: Column(children: [
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// Windows: 自定义顶栏
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if (isWin)
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Container(
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height: 52,
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decoration: BoxDecoration(color: colors.surface,
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border: Border(bottom: BorderSide(color: colors.outlineVariant, width: 0.5))),
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child: Row(children: [
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const SizedBox(width: 8),
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IconButton(icon: Icon(_isSearching ? Icons.close : Icons.arrow_back, color: colors.onSurface, size: 18),
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onPressed: _isSearching ? _toggleSearch : () => Navigator.pop(context)),
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Expanded(child: _isSearching
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? TextField(controller: _searchCtrl, autofocus: true,
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style: TextStyle(fontSize: 14, color: colors.onSurface),
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decoration: InputDecoration(hintText: '搜索书名或作者',
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hintStyle: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.35)),
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border: InputBorder.none, isDense: true, contentPadding: EdgeInsets.zero),
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onChanged: (_) => _onSearchChanged())
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: Text('EPUB 阅读',
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style: TextStyle(fontSize: 14, fontWeight: FontWeight.w500, color: colors.onSurface.withValues(alpha: 0.6)))),
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..._buildActions(colors),
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]),
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),
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// 主体
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Expanded(child: _isLoading && _books.isEmpty
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? const BookSkeletonGrid()
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: _books.isEmpty
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? _buildEmpty(colors)
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: _filteredBooks.isEmpty
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? Center(child: Text('无搜索结果', style: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.35))))
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: RefreshIndicator(
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color: colors.primary,
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onRefresh: _loadBooks,
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child: _buildContent(colors),
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)),
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]),
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);
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}
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/// 主体内容：书架（列表/网格）
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Widget _buildContent(ColorScheme colors) {
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return CustomScrollView(
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slivers: [
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// 书架分隔标题
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SliverToBoxAdapter(child: _buildSectionHeader(colors)),
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// 书架列表/网格
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_viewMode == 0 ? _buildSliverListView(colors) : _buildSliverGrid(colors),
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],
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);
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}
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/// 书架分隔标题（带计数）
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Widget _buildSectionHeader(ColorScheme colors) {
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return Padding(
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padding: const EdgeInsets.fromLTRB(20, 16, 20, 8),
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child: Text(
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'书架 (${_filteredBooks.length})',
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style: TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w600,
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color: colors.onSurface.withValues(alpha: 0.4),
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),
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),
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);
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}
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List<Widget> _buildActions(ColorScheme colors) {
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return [
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if (!_isSearching)
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IconButton(
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icon: Icon(_viewMode == 0 ? Icons.grid_view_outlined : Icons.view_list_outlined, size: 20, color: colors.onSurface.withValues(alpha: 0.6)),
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tooltip: _viewMode == 0 ? '网格视图' : '列表视图',
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onPressed: () {
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setState(() => _viewMode = _viewMode == 0 ? 1 : 0);
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UserPrefs().setEpubViewMode(_viewMode);
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},
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),
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if (!_isSearching)
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IconButton(
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icon: Icon(Icons.search, size: 20, color: colors.onSurface.withValues(alpha: 0.6)),
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onPressed: _toggleSearch,
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),
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IconButton(
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icon: Icon(Icons.sort, size: 20, color: colors.onSurface.withValues(alpha: 0.6)),
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onPressed: _showSortMenu,
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),
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IconButton(
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icon: Icon(Icons.add_outlined, size: 20, color: colors.onSurface.withValues(alpha: 0.6)),
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onPressed: _pickAndImport,
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),
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const SizedBox(width: 4),
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];
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}
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Widget _buildEmpty(ColorScheme colors) {
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(40),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(
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width: 80, height: 80,
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decoration: BoxDecoration(
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color: colors.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(20),
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),
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child: Icon(Icons.auto_stories_outlined,
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size: 40, color: colors.onSurface.withValues(alpha: 0.25)),
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),
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const SizedBox(height: 24),
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Text('EPUB 阅读',
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style: TextStyle(fontSize: 20, fontWeight: FontWeight.w600, color: colors.onSurface)),
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const SizedBox(height: 8),
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Text('点击右上角导入 .epub 文件',
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style: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.4))),
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const SizedBox(height: 32),
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GestureDetector(
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onTap: _pickAndImport,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 14),
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decoration: BoxDecoration(
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color: colors.primary,
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borderRadius: BorderRadius.circular(24),
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),
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child: Text('导入 EPUB',
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style: TextStyle(fontSize: 15, color: colors.onPrimary, fontWeight: FontWeight.w500)),
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),
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),
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],
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),
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),
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);
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}
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// ─── Sliver 书架 ────────────────────────────────────────────────────
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Widget _buildSliverListView(ColorScheme colors) {
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return SliverPadding(
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padding: const EdgeInsets.fromLTRB(12, 8, 12, 100),
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sliver: SliverList(
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delegate: SliverChildBuilderDelegate(
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(context, index) => _buildListItem(colors, _filteredBooks[index]),
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childCount: _filteredBooks.length,
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),
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),
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);
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}
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Widget _buildSliverGrid(ColorScheme colors) {
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return SliverPadding(
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padding: const EdgeInsets.fromLTRB(16, 8, 16, 100),
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sliver: SliverLayoutBuilder(
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builder: (context, constraints) {
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final crossAxisCount =
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responsiveCrossAxisCount(constraints.crossAxisExtent, minItemWidth: 110);
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return SliverGrid(
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gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: crossAxisCount,
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childAspectRatio: 0.55,
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crossAxisSpacing: 12,
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mainAxisSpacing: 16,
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),
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delegate: SliverChildBuilderDelegate(
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(context, index) => BookGridItem(
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book: _filteredBooks[index],
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viewMode: ViewMode.relaxed,
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onTap: () => _openBook(_filteredBooks[index]),
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onLongPress: () => _deleteBook(_filteredBooks[index]),
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),
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childCount: _filteredBooks.length,
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),
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);
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},
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),
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);
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}
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Widget _buildListItem(ColorScheme colors, Map<String, dynamic> book) {
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final title = book['title'] as String? ?? '';
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final author = book['author'] as String? ?? '';
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final coverPath = book['cover_path'] as String?;
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final progress = (book['reading_percentage'] as num?)?.toDouble() ?? 0.0;
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final updatedAt = book['updated_at'] as String?;
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// 阅读状态推断
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final String statusLabel;
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final Color statusColor;
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if (progress >= 1.0) {
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statusLabel = '已读';
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statusColor = const Color(0xFF16A34A);
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} else if (progress > 0.0) {
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statusLabel = '在读';
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statusColor = colors.primary;
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} else {
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statusLabel = '未读';
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statusColor = const Color(0xFFDC2626);
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}
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// 最后阅读时间
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String? lastReadText;
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if (updatedAt != null && updatedAt.isNotEmpty) {
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try {
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final dt = DateTime.parse(updatedAt);
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lastReadText = _formatRelativeDate(dt);
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} catch (_) {}
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}
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return RepaintBoundary(
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child: GestureDetector(
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onTap: () => _openBook(book),
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onLongPress: () => _deleteBook(book),
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child: Container(
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margin: const EdgeInsets.only(bottom: 8),
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: colors.surfaceContainerHigh,
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borderRadius: BorderRadius.circular(12),
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),
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child: Row(
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children: [
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// 封面
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Container(
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width: 48, height: 64,
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decoration: BoxDecoration(
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color: colors.outlineVariant,
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borderRadius: BorderRadius.circular(6),
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),
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clipBehavior: Clip.antiAlias,
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child: _buildCover(coverPath, colors),
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),
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const SizedBox(width: 12),
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// 信息
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(title, maxLines: 1, overflow: TextOverflow.ellipsis,
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style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: colors.onSurface)),
|
|
if (author.isNotEmpty) ...[
|
|
const SizedBox(height: 3),
|
|
Text(author, maxLines: 1, overflow: TextOverflow.ellipsis,
|
|
style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.35))),
|
|
],
|
|
const SizedBox(height: 6),
|
|
// 状态标签 + 最后阅读时间
|
|
Row(
|
|
children: [
|
|
Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
|
|
decoration: BoxDecoration(
|
|
color: statusColor.withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(4),
|
|
),
|
|
child: Text(statusLabel,
|
|
style: TextStyle(fontSize: 11, fontWeight: FontWeight.w500, color: statusColor)),
|
|
),
|
|
if (lastReadText != null) ...[
|
|
const SizedBox(width: 8),
|
|
Text(lastReadText,
|
|
style: TextStyle(
|
|
fontSize: 11,
|
|
color: colors.onSurface.withValues(alpha: 0.3),
|
|
)),
|
|
],
|
|
],
|
|
),
|
|
// 进度条
|
|
if (progress > 0 && progress < 1.0) ...[
|
|
const SizedBox(height: 6),
|
|
Row(
|
|
children: [
|
|
Expanded(
|
|
child: ClipRRect(
|
|
borderRadius: BorderRadius.circular(2),
|
|
child: LinearProgressIndicator(
|
|
value: progress,
|
|
minHeight: 3,
|
|
backgroundColor: colors.outlineVariant,
|
|
valueColor: AlwaysStoppedAnimation<Color>(colors.primary),
|
|
),
|
|
),
|
|
),
|
|
const SizedBox(width: 8),
|
|
Text('${(progress * 100).toInt()}%',
|
|
style: TextStyle(
|
|
fontSize: 11,
|
|
fontWeight: FontWeight.w500,
|
|
color: colors.primary,
|
|
)),
|
|
],
|
|
),
|
|
],
|
|
],
|
|
),
|
|
),
|
|
const SizedBox(width: 8),
|
|
Icon(Icons.chevron_right, color: colors.onSurface.withValues(alpha: 0.2), size: 20),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildCover(String? path, ColorScheme colors) {
|
|
final placeholder = Container(
|
|
decoration: BoxDecoration(
|
|
color: colors.outlineVariant,
|
|
borderRadius: BorderRadius.circular(6),
|
|
),
|
|
child: Icon(Icons.auto_stories_outlined, size: 22,
|
|
color: colors.onSurface.withValues(alpha: 0.25)),
|
|
);
|
|
return ClipRRect(
|
|
borderRadius: BorderRadius.circular(6),
|
|
child: FadeInLocalImage(
|
|
path: path,
|
|
fit: BoxFit.cover,
|
|
width: double.infinity,
|
|
height: double.infinity,
|
|
placeholder: placeholder,
|
|
errorWidget: placeholder,
|
|
),
|
|
);
|
|
}
|
|
|
|
/// 相对时间格式化
|
|
String _formatRelativeDate(DateTime date) {
|
|
final now = DateTime.now();
|
|
final diff = now.difference(date);
|
|
if (diff.isNegative) return '${date.month}月${date.day}日';
|
|
if (diff.inDays == 0) {
|
|
if (diff.inHours == 0) {
|
|
if (diff.inMinutes == 0) return '刚刚';
|
|
return '${diff.inMinutes}分钟前';
|
|
}
|
|
return '${diff.inHours}小时前';
|
|
} else if (diff.inDays < 7) {
|
|
return '${diff.inDays}天前';
|
|
} else if (diff.inDays < 30) {
|
|
return '${(diff.inDays / 7).floor()}周前';
|
|
} else {
|
|
return '${date.month}月${date.day}日';
|
|
}
|
|
}
|
|
}
|