generated from dellevin/template
141 lines
4.1 KiB
Dart
141 lines
4.1 KiB
Dart
import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../providers/app_provider.dart';
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import 'add_sheet.dart';
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/// 自定义底部导航栏 - Dock栏悬浮设计
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class CustomBottomNavBar extends StatelessWidget {
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const CustomBottomNavBar({super.key});
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@override
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Widget build(BuildContext context) {
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final bottomPadding = MediaQuery.of(context).padding.bottom;
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return Consumer<AppProvider>(
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builder: (context, provider, child) {
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return Container(
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height: 64 + bottomPadding + 16,
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color: Colors.transparent,
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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_buildDock(context, provider: provider),
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SizedBox(height: bottomPadding + 8),
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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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/// Dock 悬浮导航条；毛玻璃模式下加真实模糊，保证可读
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Widget _buildDock(BuildContext context, {required AppProvider provider}) {
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final colors = Theme.of(context).colorScheme;
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final isDark = Theme.of(context).brightness == Brightness.dark;
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final isFrosted = provider.frostedActive;
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final dock = Container(
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height: 56,
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decoration: BoxDecoration(
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color: colors.surface,
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borderRadius: BorderRadius.circular(28),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: isDark ? 0.3 : 0.08),
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blurRadius: 20,
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offset: const Offset(0, 4),
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spreadRadius: 0,
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),
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BoxShadow(
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color: Colors.black.withValues(alpha: isDark ? 0.15 : 0.04),
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blurRadius: 8,
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offset: const Offset(0, 2),
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spreadRadius: -2,
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),
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],
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: [
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_buildNavItem(
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colors: colors,
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icon: Icons.home_outlined,
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activeIcon: Icons.home,
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isActive: provider.bottomNavIndex == 0,
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onTap: () => provider.setBottomNavIndex(0),
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),
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_buildAddButton(context, provider),
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_buildNavItem(
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colors: colors,
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icon: Icons.person_outline,
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activeIcon: Icons.person,
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isActive: provider.bottomNavIndex == 2,
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onTap: () => provider.setBottomNavIndex(2),
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),
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],
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),
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);
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// 毛玻璃模式下：裁剪 + 模糊区域与胶囊同宽（外围留白），避免整行全宽模糊
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Widget result = dock;
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if (isFrosted) {
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result = ClipRRect(
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borderRadius: BorderRadius.circular(28),
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child: BackdropFilter(
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filter: ui.ImageFilter.blur(sigmaX: 25, sigmaY: 25),
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child: dock,
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),
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);
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}
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 40),
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child: result,
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);
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}
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Widget _buildNavItem({
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required ColorScheme colors,
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required IconData icon,
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required IconData activeIcon,
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required bool isActive,
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required VoidCallback onTap,
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}) {
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return InkWell(
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onTap: onTap,
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borderRadius: BorderRadius.circular(28),
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child: Container(
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width: 56,
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height: 56,
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color: Colors.transparent,
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child: Center(
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child: Icon(
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isActive ? activeIcon : icon,
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color: isActive ? colors.primary : colors.onSurface.withValues(alpha: 0.4),
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size: 26,
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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 _buildAddButton(BuildContext context, AppProvider provider) {
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final colors = Theme.of(context).colorScheme;
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return GestureDetector(
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onTap: () => showAddSheet(context, provider),
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onLongPress: () => showQuickAddSheet(context, provider),
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child: Container(
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width: 44,
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height: 44,
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decoration: BoxDecoration(
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color: colors.primary,
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borderRadius: BorderRadius.circular(12),
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),
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child: Icon(
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Icons.add,
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color: colors.onPrimary,
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size: 24,
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),
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),
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);
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}
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} |