109 lines
3.8 KiB
Dart
109 lines
3.8 KiB
Dart
import 'package:flutter/material.dart';
|
|
import 'package:google_fonts/google_fonts.dart';
|
|
|
|
import '../../core/theme/app_colors.dart';
|
|
import '../history/history_screen.dart';
|
|
import '../home/home_screen.dart';
|
|
import '../profile/profile_screen.dart';
|
|
|
|
/// 底栏：极淡背景渐变 + 图标/标签 [Shadow]，兼顾层次与可读性。
|
|
const List<Shadow> _bottomNavItemShadows = [
|
|
Shadow(offset: Offset(0, 1), blurRadius: 3, color: Color(0x72000000)),
|
|
Shadow(offset: Offset(0, 0), blurRadius: 8, color: Color(0x40000000)),
|
|
];
|
|
|
|
/// Root shell: bottom tabs **Home**, **History**, **Profile** (English labels).
|
|
class MainScreen extends StatefulWidget {
|
|
const MainScreen({super.key});
|
|
|
|
@override
|
|
State<MainScreen> createState() => _MainScreenState();
|
|
}
|
|
|
|
class _MainScreenState extends State<MainScreen> {
|
|
int _index = 0;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final parentNav = NavigationBarTheme.of(context);
|
|
return Scaffold(
|
|
// All tabs: body extends under the bottom bar (faint gradient + [NavigationBar]).
|
|
extendBody: true,
|
|
body: IndexedStack(
|
|
index: _index,
|
|
children: [
|
|
const HomeScreen(),
|
|
HistoryScreen(isRootTab: true, isTabSelected: _index == 1),
|
|
const ProfileScreen(isRootTab: true),
|
|
],
|
|
),
|
|
bottomNavigationBar: Stack(
|
|
alignment: Alignment.bottomCenter,
|
|
children: [
|
|
Positioned.fill(
|
|
child: DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
gradient: LinearGradient(
|
|
begin: Alignment.bottomCenter,
|
|
end: Alignment.topCenter,
|
|
colors: [
|
|
AppColors.surface.withValues(alpha: 0.40),
|
|
AppColors.surface.withValues(alpha: 0.15),
|
|
AppColors.surface.withValues(alpha: 0),
|
|
],
|
|
stops: const [0.0, 0.48, 1.0],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
NavigationBarTheme(
|
|
data: parentNav.copyWith(
|
|
labelTextStyle: WidgetStateProperty.resolveWith((states) {
|
|
final selected = states.contains(WidgetState.selected);
|
|
return GoogleFonts.inter(
|
|
fontSize: 12,
|
|
fontWeight: selected ? FontWeight.w600 : FontWeight.w500,
|
|
color: selected ? AppColors.primary : AppColors.onSurface,
|
|
shadows: _bottomNavItemShadows,
|
|
);
|
|
}),
|
|
iconTheme: WidgetStateProperty.resolveWith((states) {
|
|
final selected = states.contains(WidgetState.selected);
|
|
return IconThemeData(
|
|
color: selected ? AppColors.primary : AppColors.onSurface,
|
|
shadows: _bottomNavItemShadows,
|
|
);
|
|
}),
|
|
),
|
|
child: NavigationBar(
|
|
backgroundColor: Colors.transparent,
|
|
elevation: 0,
|
|
surfaceTintColor: Colors.transparent,
|
|
shadowColor: Colors.transparent,
|
|
selectedIndex: _index,
|
|
onDestinationSelected: (i) => setState(() => _index = i),
|
|
destinations: const [
|
|
NavigationDestination(
|
|
icon: Icon(Icons.home_outlined),
|
|
selectedIcon: Icon(Icons.home_rounded),
|
|
label: 'Home',
|
|
),
|
|
NavigationDestination(
|
|
icon: Icon(Icons.history_outlined),
|
|
selectedIcon: Icon(Icons.history_rounded),
|
|
label: 'History',
|
|
),
|
|
NavigationDestination(
|
|
icon: Icon(Icons.person_outline_rounded),
|
|
selectedIcon: Icon(Icons.person_rounded),
|
|
label: 'Profile',
|
|
),
|
|
],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|