122 lines
2.9 KiB
Dart
122 lines
2.9 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:food_hub_app/widgets/common/index.dart';
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class YearSelector extends StatefulWidget {
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final int initialYear;
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final int? minYear;
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final int? maxYear;
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final Function(int) onYearChanged;
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const YearSelector({
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super.key,
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required this.initialYear,
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required this.onYearChanged,
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this.minYear,
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this.maxYear,
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});
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@override
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State<YearSelector> createState() => _YearSelectorState();
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}
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// SingleTickerProviderStateMixin 动画控制器
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class _YearSelectorState extends State<YearSelector>
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with SingleTickerProviderStateMixin {
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late int _currentYear;
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// 用于动画效果
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late AnimationController _animationController;
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late Animation<double> _scaleAnimation;
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@override
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void initState() {
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super.initState();
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_currentYear = widget.initialYear;
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// 初始化动画控制器
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_animationController = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 200),
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);
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// 缩放动画
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_scaleAnimation = Tween<double>(begin: 1.0, end: 1.1).animate(
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CurvedAnimation(parent: _animationController, curve: Curves.easeInOut),
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);
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}
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@override
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void dispose() {
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_animationController.dispose();
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super.dispose();
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}
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/// 切换到上一年
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void _previousYear() {
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if (widget.minYear == null || _currentYear > widget.minYear!) {
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_animateYearChange(() {
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setState(() {
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_currentYear--;
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});
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widget.onYearChanged(_currentYear);
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});
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}
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}
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/// 切换到下一年
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void _nextYear() {
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if (widget.maxYear == null || _currentYear < widget.maxYear!) {
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_animateYearChange(() {
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setState(() {
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_currentYear++;
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});
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widget.onYearChanged(_currentYear);
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});
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}
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}
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/// 年份变化时的动画效果
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void _animateYearChange(VoidCallback onComplete) {
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_animationController.forward().then((_) {
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onComplete();
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_animationController.reverse();
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});
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}
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@override
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Widget build(BuildContext context) {
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return Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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circleIconButton(
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context: context,
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icon: Icons.chevron_left,
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onPressed: () => _previousYear(),
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),
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SizedBox(width: 5),
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// 年份显示
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AnimatedBuilder(
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animation: _scaleAnimation,
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builder: (context, child) {
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return Transform.scale(scale: _scaleAnimation.value, child: child);
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},
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child: Text(
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'$_currentYear',
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.bold,
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color: Theme.of(context).primaryColor,
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),
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),
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),
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SizedBox(width: 5),
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circleIconButton(
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context: context,
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icon: Icons.chevron_right,
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onPressed: () => _nextYear(),
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)
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],
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);
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}
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}
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