generated from dellevin/template
324 lines
9.8 KiB
Dart
324 lines
9.8 KiB
Dart
import 'dart:io';
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:share_plus/share_plus.dart';
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import '../../models/data_models.dart';
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import '../../utils/toast_util.dart';
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import '../../widgets/fade_in_local_image.dart';
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/// 书籍分享海报页面
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class BookSharePage extends StatefulWidget {
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final Book book;
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const BookSharePage({super.key, required this.book});
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@override
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State<BookSharePage> createState() => _BookSharePageState();
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}
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class _BookSharePageState extends State<BookSharePage> {
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final GlobalKey _posterKey = GlobalKey();
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bool _isGenerating = false;
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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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return Scaffold(
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backgroundColor: colors.surfaceContainerHighest,
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appBar: AppBar(
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backgroundColor: colors.surface,
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elevation: 0,
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leading: IconButton(
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icon: Icon(Icons.close, color: colors.onSurface),
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onPressed: () => Navigator.pop(context),
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),
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title: Text(
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'分享海报',
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.w600,
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color: colors.onSurface,
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),
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),
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centerTitle: true,
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actions: [
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TextButton(
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onPressed: _isGenerating ? null : _generateAndShare,
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child: _isGenerating
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? const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(strokeWidth: 2),
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)
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: Text(
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'分享',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: colors.onSurface,
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),
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),
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),
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const SizedBox(width: 8),
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],
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),
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body: Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(24),
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child: RepaintBoundary(
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key: _posterKey,
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child: _buildPosterWidget(),
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),
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),
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),
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);
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}
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/// 构建海报 Widget
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Widget _buildPosterWidget() {
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final colors = Theme.of(context).colorScheme;
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final book = widget.book;
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final hasCover = book.coverPath != null && book.coverPath!.isNotEmpty;
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return Container(
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width: 320,
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decoration: BoxDecoration(
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color: colors.surface,
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borderRadius: BorderRadius.circular(16),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.1),
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blurRadius: 20,
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offset: const Offset(0, 10),
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),
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],
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 封面图片
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if (hasCover)
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ClipRRect(
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borderRadius: const BorderRadius.vertical(top: Radius.circular(16)),
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child: FadeInLocalImage(
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path: book.coverPath,
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width: 320,
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height: 200,
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fit: BoxFit.cover,
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),
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),
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// 内容区域
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Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 书名
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Text(
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book.title,
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style: TextStyle(
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fontSize: 22,
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fontWeight: FontWeight.bold,
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color: colors.onSurface,
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),
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),
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// 别名
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if (book.alternateTitles.isNotEmpty) ...[
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const SizedBox(height: 8),
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Text(
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book.alternateTitles.join(' / '),
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style: TextStyle(
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fontSize: 14,
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color: colors.onSurface.withValues(alpha: 0.6),
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),
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),
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],
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const SizedBox(height: 16),
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// 评分
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if (book.rating != null && book.rating! > 0) ...[
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Row(
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children: [
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const Icon(
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Icons.star,
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size: 18,
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color: Color(0xFFFFB800),
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),
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const SizedBox(width: 4),
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Text(
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book.rating!.toStringAsFixed(1),
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style: const TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: Color(0xFFFFB800),
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),
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),
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const SizedBox(width: 4),
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Text(
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'/ 10',
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style: TextStyle(
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fontSize: 12,
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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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const SizedBox(height: 12),
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],
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// 作者
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if (book.authors.isNotEmpty)
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_buildInfoRow('作者', book.authors.join(' / '), colors),
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// 出版社
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if (book.publisher != null && book.publisher!.isNotEmpty)
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_buildInfoRow('出版社', book.publisher!, colors),
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// 出版时间
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if (book.publishDate != null)
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_buildInfoRow(
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'出版',
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'${book.publishDate!.year}.${book.publishDate!.month.toString().padLeft(2, '0')}.${book.publishDate!.day.toString().padLeft(2, '0')}',
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colors,
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),
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// 类型
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if (book.genres.isNotEmpty)
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_buildInfoRow('类型', book.genres.join(' / '), colors),
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// ISBN
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if (book.isbn != null && book.isbn!.isNotEmpty)
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_buildInfoRow('ISBN', book.isbn!, colors),
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const SizedBox(height: 16),
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// 简介
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if (book.summary != null && book.summary!.isNotEmpty) ...[
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Text(
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'简介',
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style: TextStyle(
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fontSize: 12,
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color: colors.onSurface.withValues(alpha: 0.4),
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),
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),
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const SizedBox(height: 8),
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Text(
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book.summary!,
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style: TextStyle(
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fontSize: 13,
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color: colors.onSurface.withValues(alpha: 0.6),
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height: 1.6,
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),
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maxLines: 5,
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overflow: TextOverflow.ellipsis,
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),
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],
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const SizedBox(height: 20),
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// 底部标识
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Divider(height: 1, color: colors.outline),
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const SizedBox(height: 12),
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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Icons.book_outlined,
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size: 14,
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color: colors.onSurface.withValues(alpha: 0.5),
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),
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const SizedBox(width: 6),
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Text(
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'来自 MookNote',
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style: TextStyle(
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fontSize: 12,
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color: colors.onSurface.withValues(alpha: 0.5),
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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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],
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),
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);
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}
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/// 构建信息行
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Widget _buildInfoRow(String label, String value, ColorScheme colors) {
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return Padding(
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padding: const EdgeInsets.only(bottom: 8),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'$label：',
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style: TextStyle(
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fontSize: 13,
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color: colors.onSurface.withValues(alpha: 0.4),
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),
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),
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Expanded(
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child: Text(
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value,
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style: TextStyle(
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fontSize: 13,
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color: colors.onSurface.withValues(alpha: 0.75),
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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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/// 生成并分享海报
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Future<void> _generateAndShare() async {
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setState(() => _isGenerating = true);
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try {
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// 捕获海报图片
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final boundary = _posterKey.currentContext?.findRenderObject()
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as RenderRepaintBoundary?;
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if (boundary == null) {
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throw Exception('无法获取海报边界');
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}
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final image = await boundary.toImage(pixelRatio: 3.0);
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final byteData = await image.toByteData(format: ui.ImageByteFormat.png);
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if (byteData == null) {
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throw Exception('无法生成图片数据');
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}
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final bytes = byteData.buffer.asUint8List();
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// 保存到临时文件
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final tempDir = await getTemporaryDirectory();
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final fileName = 'book_poster_${DateTime.now().millisecondsSinceEpoch}.png';
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final file = File('${tempDir.path}/$fileName');
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await file.writeAsBytes(bytes);
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// 分享
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await Share.shareXFiles(
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[XFile(file.path)],
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text: '分享书籍：${widget.book.title}',
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);
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} catch (e) {
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if (mounted) {
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ToastUtil.show(context, '生成海报失败：$e');
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}
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} finally {
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if (mounted) {
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setState(() => _isGenerating = false);
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}
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}
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}
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}
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