122 lines
3.5 KiB
Dart
122 lines
3.5 KiB
Dart
import 'package:flutter/material.dart';
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import '../../app/theme/app_colors.dart';
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import '../../app/theme/app_spacing.dart';
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/// 骨架屏加载组件
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///
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/// 列表加载、详情加载的骨架占位
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class SkeletonLoader extends StatefulWidget {
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final double width;
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final double height;
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final double borderRadius;
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const SkeletonLoader({
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super.key,
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this.width = double.infinity,
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required this.height,
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this.borderRadius = 8,
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});
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@override
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State<SkeletonLoader> createState() => _SkeletonLoaderState();
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}
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class _SkeletonLoaderState extends State<SkeletonLoader>
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with SingleTickerProviderStateMixin {
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late AnimationController _controller;
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late Animation<double> _animation;
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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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duration: const Duration(milliseconds: 1500),
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vsync: this,
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)..repeat();
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_animation = Tween<double>(begin: -1.0, end: 2.0).animate(
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CurvedAnimation(parent: _controller, 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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_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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return AnimatedBuilder(
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animation: _animation,
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builder: (context, child) {
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return Container(
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width: widget.width,
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height: widget.height,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(widget.borderRadius),
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gradient: LinearGradient(
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begin: Alignment.centerLeft,
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end: Alignment.centerRight,
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stops: [
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(_animation.value - 0.3).clamp(0.0, 1.0),
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_animation.value.clamp(0.0, 1.0),
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(_animation.value + 0.3).clamp(0.0, 1.0),
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],
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colors: const [
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AppColors.gray100,
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AppColors.gray50,
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AppColors.gray100,
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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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/// 券卡片骨架屏
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class CouponCardSkeleton extends StatelessWidget {
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const CouponCardSkeleton({super.key});
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@override
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Widget build(BuildContext context) {
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return Container(
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height: AppSpacing.couponCardHeight,
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decoration: BoxDecoration(
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color: AppColors.surface,
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borderRadius: AppSpacing.borderRadiusMd,
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border: Border.all(color: AppColors.borderLight),
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),
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child: Row(
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children: [
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const SkeletonLoader(width: 110, height: double.infinity, borderRadius: 12),
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const SizedBox(width: 16),
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Expanded(
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child: Padding(
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padding: const EdgeInsets.symmetric(vertical: 12),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SkeletonLoader(width: 60, height: 10, borderRadius: 4),
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const SizedBox(height: 6),
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SkeletonLoader(width: 140, height: 14, borderRadius: 4),
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],
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),
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SkeletonLoader(width: 100, height: 16, borderRadius: 4),
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SkeletonLoader(width: 80, height: 10, borderRadius: 4),
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],
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),
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),
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),
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const SizedBox(width: 12),
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],
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),
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);
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}
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}
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