feat: 实现导航页基础功能
- 添加导航条目和分类数据模型 - 实现导航卡片网格展示 - 支持点击卡片打开链接 - 添加主题样式（渐变色、卡片阴影） - 区分系统默认和自定义条目 - 添加分类统计信息"
This commit is contained in:
@@ -1,5 +1,10 @@
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import 'package:flutter/material.dart';
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import 'models/nav_item.dart';
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import 'models/category.dart';
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import 'data/mock_data.dart';
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import 'package:web/web.dart' as web;
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import 'data/nav_data.dart';
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import 'theme/app_theme.dart';
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void main() {
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runApp(const MyApp());
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}
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@@ -7,115 +12,233 @@ void main() {
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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// This widget is the root of your application.
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Flutter Demo',
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theme: ThemeData(
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// This is the theme of your application.
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//
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// TRY THIS: Try running your application with "flutter run". You'll see
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// the application has a purple toolbar. Then, without quitting the app,
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// try changing the seedColor in the colorScheme below to Colors.green
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// and then invoke "hot reload" (save your changes or press the "hot
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// reload" button in a Flutter-supported IDE, or press "r" if you used
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// the command line to start the app).
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//
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// Notice that the counter didn't reset back to zero; the application
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// state is not lost during the reload. To reset the state, use hot
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// restart instead.
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//
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// This works for code too, not just values: Most code changes can be
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// tested with just a hot reload.
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colorScheme: .fromSeed(seedColor: Colors.deepPurple),
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),
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home: const MyHomePage(title: 'Flutter Demo Home Page'),
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title: 'Navius 导航',
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theme: AppTheme.lightTheme,
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home: NaviusHomePage(),
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);
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}
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}
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class MyHomePage extends StatefulWidget {
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const MyHomePage({super.key, required this.title});
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// This widget is the home page of your application. It is stateful, meaning
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// that it has a State object (defined below) that contains fields that affect
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// how it looks.
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// This class is the configuration for the state. It holds the values (in this
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// case the title) provided by the parent (in this case the App widget) and
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// used by the build method of the State. Fields in a Widget subclass are
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// always marked "final".
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final String title;
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@override
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State<MyHomePage> createState() => _MyHomePageState();
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}
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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void _incrementCounter() {
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setState(() {
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// This call to setState tells the Flutter framework that something has
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// changed in this State, which causes it to rerun the build method below
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// so that the display can reflect the updated values. If we changed
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// _counter without calling setState(), then the build method would not be
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// called again, and so nothing would appear to happen.
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_counter++;
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});
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}
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class NaviusHomePage extends StatelessWidget {
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const NaviusHomePage({super.key});
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@override
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Widget build(BuildContext context) {
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// This method is rerun every time setState is called, for instance as done
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// by the _incrementCounter method above.
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//
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// The Flutter framework has been optimized to make rerunning build methods
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// fast, so that you can just rebuild anything that needs updating rather
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// than having to individually change instances of widgets.
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// 获取分类数据
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final categories = MockData.getCategories();
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return Scaffold(
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appBar: AppBar(
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// TRY THIS: Try changing the color here to a specific color (to
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// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
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// change color while the other colors stay the same.
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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// Here we take the value from the MyHomePage object that was created by
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// the App.build method, and use it to set our appbar title.
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title: Text(widget.title),
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),
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body: Center(
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// Center is a layout widget. It takes a single child and positions it
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// in the middle of the parent.
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child: Column(
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// Column is also a layout widget. It takes a list of children and
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// arranges them vertically. By default, it sizes itself to fit its
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// children horizontally, and tries to be as tall as its parent.
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//
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// Column has various properties to control how it sizes itself and
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// how it positions its children. Here we use mainAxisAlignment to
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// center the children vertically; the main axis here is the vertical
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// axis because Columns are vertical (the cross axis would be
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// horizontal).
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//
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// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
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// action in the IDE, or press "p" in the console), to see the
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// wireframe for each widget.
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mainAxisAlignment: .center,
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children: [
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const Text('You have pushed the button this many times:'),
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Text(
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'$_counter',
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style: Theme.of(context).textTheme.headlineMedium,
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appBar: PreferredSize(
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preferredSize: const Size.fromHeight(120),
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child: Container(
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decoration: BoxDecoration(
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gradient: AppTheme.appBarGradient,
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borderRadius: const BorderRadius.only(
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bottomLeft: Radius.circular(30),
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bottomRight: Radius.circular(30),
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),
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],
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),
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child: SafeArea(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// 标题
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const Text(
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'Navius 导航',
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style: TextStyle(
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fontSize: 28,
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fontWeight: FontWeight.bold,
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color: Colors.white,
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letterSpacing: 1.5,
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),
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),
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const SizedBox(height: 4),
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Text(
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'${categories.length} 个分类 · ${_getTotalEntries(categories)} 个导航',
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style: const TextStyle(
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fontSize: 14,
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color: Colors.white70,
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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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floatingActionButton: FloatingActionButton(
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onPressed: _incrementCounter,
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tooltip: 'Increment',
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child: const Icon(Icons.add),
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body: ListView.builder(
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padding: const EdgeInsets.all(16),
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itemCount: categories.length,
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itemBuilder: (context, index) {
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final category = categories[index];
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return CategorySection(category: category);
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},
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),
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);
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}
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// 计算总导航数
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static int _getTotalEntries(List<Category> categories) {
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int total = 0;
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for (var category in categories) {
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total += category.entries.length;
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}
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return total;
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}
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}
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// 分类区块组件
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class CategorySection extends StatelessWidget {
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final Category category;
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const CategorySection({super.key, required this.category});
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@override
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Widget build(BuildContext context) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 分类标题（美化版）
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Padding(
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padding: const EdgeInsets.symmetric(vertical: 16),
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child: Row(
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children: [
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// 分类名称
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Text(
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category.name,
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style: const TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.w700,
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color: Color(0xFF1E293B),
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letterSpacing: 0.5,
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),
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),
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const SizedBox(width: 12),
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// 条目数量
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 2),
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decoration: BoxDecoration(
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color: AppTheme.systemTagColor,
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borderRadius: BorderRadius.circular(12),
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),
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child: Text(
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'${category.entries.length}',
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style: const TextStyle(
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fontSize: 12,
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color: AppTheme.systemTagTextColor,
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fontWeight: FontWeight.w600,
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),
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),
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),
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const Spacer(),
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// 系统标签
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if (category.isSystem)
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
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decoration: BoxDecoration(
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color: AppTheme.systemTagColor,
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borderRadius: BorderRadius.circular(12),
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),
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child: const Text(
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'系统分类',
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style: TextStyle(
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fontSize: 11,
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color: AppTheme.systemTagTextColor,
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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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),
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// 导航网格（4列）
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GridView.builder(
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 4,
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childAspectRatio: 1.0,
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crossAxisSpacing: 16,
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mainAxisSpacing: 16,
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),
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itemCount: category.entries.length,
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itemBuilder: (context, index) {
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final item = category.entries[index];
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return NavItemCard(item: item);
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},
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),
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const SizedBox(height: 8),
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],
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);
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}
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}
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// 单个导航卡片组件
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class NavItemCard extends StatelessWidget {
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final NavItem item;
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const NavItemCard({super.key, required this.item});
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@override
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Widget build(BuildContext context) {
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return Container(
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(16),
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boxShadow: AppTheme.cardShadow,
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),
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child: InkWell(
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onTap: () {
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web.window.open(item.url, '_blank');
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},
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borderRadius: BorderRadius.circular(16),
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hoverColor: AppTheme.primaryColor.withOpacity(0.05),
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splashColor: AppTheme.primaryColor.withOpacity(0.1),
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child: Padding(
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padding: const EdgeInsets.all(8),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// 图标（增大）
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Text(
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item.icon,
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style: const TextStyle(fontSize: 36),
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),
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const SizedBox(height: 10),
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// 标题
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Text(
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item.title,
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style: const TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w500,
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color: Color(0xFF1E293B),
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),
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textAlign: TextAlign.center,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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const SizedBox(height: 4),
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// 系统标签（改进样式）
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if (item.isSystem)
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
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decoration: BoxDecoration(
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color: AppTheme.systemTagColor,
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borderRadius: BorderRadius.circular(10),
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),
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child: Text(
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'默认',
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style: TextStyle(
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fontSize: 9,
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color: AppTheme.systemTagTextColor,
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fontWeight: FontWeight.w600,
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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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