generated from dellevin/template
97 lines
2.6 KiB
Dart
97 lines
2.6 KiB
Dart
import 'package:flutter/material.dart';
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/// 带动画的星级评分组件 — 星星依次亮起 + 数字滚动
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class AnimatedStarRating extends StatefulWidget {
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final double rating;
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final double starSize;
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final Color color;
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final bool showNumber;
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const AnimatedStarRating({
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super.key,
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required this.rating,
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this.starSize = 14,
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this.color = const Color(0xFFFFB800),
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this.showNumber = false,
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});
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@override
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State<AnimatedStarRating> createState() => _AnimatedStarRatingState();
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}
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class _AnimatedStarRatingState extends State<AnimatedStarRating>
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with SingleTickerProviderStateMixin {
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late AnimationController _controller;
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late List<Animation<double>> _animations;
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late Animation<double> _numberAnim;
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@override
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void initState() {
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super.initState();
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_controller = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 600),
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);
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_animations = List.generate(5, (i) {
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return CurvedAnimation(
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parent: _controller,
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curve: Interval(i * 0.12, (i * 0.12) + 0.35, curve: Curves.easeOutBack),
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);
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});
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_numberAnim = Tween<double>(begin: 0, end: widget.rating).animate(
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CurvedAnimation(
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parent: _controller,
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curve: const Interval(0.1, 0.8, curve: Curves.easeOut),
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),
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);
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_controller.forward();
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}
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@override
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void dispose() {
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_controller.dispose();
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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 starValue = widget.rating / 2;
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return Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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...List.generate(5, (index) {
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final starIndex = index + 1;
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IconData iconData;
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if (starValue >= starIndex) {
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iconData = Icons.star;
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} else if (starValue >= starIndex - 0.5) {
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iconData = Icons.star_half;
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} else {
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iconData = Icons.star_border;
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}
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return ScaleTransition(
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scale: _animations[index],
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child: Icon(iconData, size: widget.starSize, color: widget.color),
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);
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}),
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if (widget.showNumber) ...[
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const SizedBox(width: 4),
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AnimatedBuilder(
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animation: _numberAnim,
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builder: (context, child) {
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return Text(
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_numberAnim.value.toStringAsFixed(1),
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style: TextStyle(
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fontSize: widget.starSize,
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fontWeight: FontWeight.w600,
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color: const Color(0xFF666666),
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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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