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