feat:增加菜单栏模块
This commit is contained in:
254
lib/main.dart
254
lib/main.dart
@@ -1,130 +1,200 @@
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import 'package:blog_app/test.dart';
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import 'package:flutter/material.dart';
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import 'package:markdown_widget/markdown_widget.dart';
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void main() {
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runApp(const MyApp());
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runApp(MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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appBar: AppBar(
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title: const Text('Markdown导航'),
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title: Text('博客卡片Demo'),
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backgroundColor: Colors.blue,
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foregroundColor: Colors.white,
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),
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body: const MarkdownWithToc(),
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body: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [Colors.blue.shade50, Colors.purple.shade50],
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),
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),
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child: SingleChildScrollView(
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padding: EdgeInsets.all(16),
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child: Column(
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children: [
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BlogCard(
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title: 'Flutter开发实战',
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description: '本文详细介绍了如何使用Flutter开发高性能的跨平台应用，包含最佳实践和性能优化技巧。通过实际案例演示了状态管理、路由导航、网络请求等核心功能的实现方式，帮助开发者快速掌握Flutter开发精髓。',
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labels: [
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BlogLabel('精品', Icons.star, Colors.amber),
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BlogLabel('置顶', Icons.push_pin, Colors.red),
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BlogLabel('技术', Icons.category, Colors.blue),
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BlogLabel('2024-01-15', Icons.calendar_today, Colors.green),
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BlogLabel('2024-01-20', Icons.update, Colors.orange),
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BlogLabel('2.3k', Icons.remove_red_eye, Colors.purple),
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BlogLabel('3.2k字', Icons.text_fields, Colors.indigo),
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BlogLabel('8分钟', Icons.access_time, Colors.brown),
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BlogLabel('24', Icons.comment, Colors.teal),
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],
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),
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SizedBox(height: 20),
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BlogCard(
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title: 'Dart语言特性深入解析',
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description: '深入探讨Dart语言的现代特性，包括空安全、异步编程、扩展方法等高级功能。结合实例讲解如何利用Dart的特性编写更安全、更高效的代码，提升开发效率和代码质量。',
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labels: [
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BlogLabel('推荐', Icons.thumb_up, Colors.pink),
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BlogLabel('编程', Icons.code, Colors.blue),
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BlogLabel('2024-01-10', Icons.calendar_today, Colors.green),
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BlogLabel('2024-01-18', Icons.update, Colors.orange),
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BlogLabel('1.5k', Icons.remove_red_eye, Colors.purple),
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BlogLabel('2.1k字', Icons.text_fields, Colors.indigo),
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BlogLabel('6分钟', Icons.access_time, Colors.brown),
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BlogLabel('18', Icons.comment, Colors.teal),
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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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theme: ThemeData(
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fontFamily: 'CustomFont'
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),
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);
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}
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}
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class MarkdownWithToc extends StatefulWidget {
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const MarkdownWithToc({super.key});
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class BlogLabel {
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final String text;
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final IconData icon;
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final Color color;
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@override
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State<MarkdownWithToc> createState() => _MarkdownWithTocState();
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BlogLabel(this.text, this.icon, this.color);
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}
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class _MarkdownWithTocState extends State<MarkdownWithToc> {
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final tocController = TocController();
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bool _showToc = false;
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class BlogCard extends StatelessWidget {
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final String title;
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final String description;
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final List<BlogLabel> labels;
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// ... markdownData 同上
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const BlogCard({
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super.key,
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required this.title,
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required this.description,
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required this.labels,
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});
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Widget _buildTocPanel() => AnimatedOpacity(
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opacity: _showToc ? 1.0 : 0.0,
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duration: const Duration(milliseconds: 300),
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child: Visibility(
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visible: _showToc,
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child: Align(
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alignment: Alignment.bottomRight,
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child: Container(
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width: 250,
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height: 400,
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margin: const EdgeInsets.only(bottom: 60, right: 60), // 调整位置在按钮左侧
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(12),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.2),
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blurRadius: 8,
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offset: const Offset(0, 4),
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),
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],
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border: Border.all(color: Colors.grey[300]!),
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@override
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Widget build(BuildContext context) {
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return Card(
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elevation: 4,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(16),
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),
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child: Container(
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width: double.infinity, // 确保宽度对齐
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(16),
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gradient: LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [Colors.white, Colors.grey.shade50],
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),
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),
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child: Padding(
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padding: EdgeInsets.all(20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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// 标题栏
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: Colors.grey[100],
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borderRadius: const BorderRadius.only(
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topLeft: Radius.circular(12),
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topRight: Radius.circular(12),
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),
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// 标题 - 居中
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Text(
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title,
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style: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.bold,
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color: Colors.blue.shade800,
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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const Text(
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'目录',
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 16,
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textAlign: TextAlign.center,
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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),
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SizedBox(height: 16),
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// 单行标签 - 居中，更小的尺寸
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Container(
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width: double.infinity,
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child: Wrap(
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spacing: 6,
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runSpacing: 6,
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alignment: WrapAlignment.center,
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children: labels.map((label) {
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return Container(
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padding: EdgeInsets.symmetric(horizontal: 8, vertical: 4),
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decoration: BoxDecoration(
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color: label.color.withAlpha(30),
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borderRadius: BorderRadius.circular(8),
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border: Border.all(
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color: label.color.withAlpha(20),
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width: 1,
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),
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),
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),
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IconButton(
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icon: const Icon(Icons.close, size: 20),
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onPressed: () => setState(() => _showToc = false),
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),
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],
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(label.icon, size: 12, color: label.color),
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SizedBox(width: 4),
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Text(
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label.text,
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style: TextStyle(
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fontSize: 10,
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color: label.color,
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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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}).toList(),
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),
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),
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Expanded(
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child: TocWidget(
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controller: tocController,
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SizedBox(height: 16),
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// 分隔线
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Container(
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height: 1,
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width: 80,
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color: Colors.blue.shade200,
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),
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SizedBox(height: 16),
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// 描述 - 放在下面，大约100字
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Container(
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width: double.infinity,
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child: Text(
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description,
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style: TextStyle(
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fontSize: 14,
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color: Colors.grey.shade700,
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height: 1.6,
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),
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textAlign: TextAlign.justify,
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maxLines: 4,
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overflow: TextOverflow.ellipsis,
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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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Widget buildMarkdown() => MarkdownWidget(
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data: markdownData,
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tocController: tocController,
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);
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('文档'),
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),
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body: Stack(
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children: [
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// 主内容
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buildMarkdown(),
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// 悬浮TOC面板
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_buildTocPanel(),
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],
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),
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floatingActionButton: FloatingActionButton(
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onPressed: () => setState(() => _showToc = !_showToc),
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child: Icon(_showToc ? Icons.close : Icons.list),
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mini: true,
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backgroundColor: _showToc ? Colors.grey : Theme.of(context).primaryColor,
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),
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);
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}
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}
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