马良AI写作初始化仓库
This commit is contained in:
邓滨杰
256
AINoval/lib/widgets/common/top_toast.dart
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256
AINoval/lib/widgets/common/top_toast.dart
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import 'package:flutter/material.dart';
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import 'package:ainoval/utils/web_theme.dart';
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/// 顶部吐司提示类型
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enum TopToastType {
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success,
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warning,
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error,
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info,
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}
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/// 顶部吐司提示组件
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/// 在屏幕顶部居中显示简洁的提示消息，与整体设计风格保持一致
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class TopToast {
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static OverlayEntry? _currentOverlay;
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/// 显示顶部提示
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///
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/// [context] - 上下文，用于获取主题和Overlay
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/// [message] - 提示消息文本
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/// [type] - 提示类型，决定图标和颜色
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/// [duration] - 显示时长，默认3秒
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static void show(
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BuildContext context, {
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required String message,
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TopToastType type = TopToastType.info,
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Duration duration = const Duration(seconds: 3),
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}) {
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// 如果有正在显示的toast，先移除它
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hide();
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final overlay = Overlay.of(context);
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if (overlay == null) return;
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_currentOverlay = OverlayEntry(
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builder: (context) => _TopToastWidget(
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message: message,
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type: type,
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onDismiss: hide,
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),
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);
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overlay.insert(_currentOverlay!);
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// 自动隐藏
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Future.delayed(duration, () {
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hide();
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});
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}
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/// 显示成功提示
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static void success(BuildContext context, String message) {
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show(context, message: message, type: TopToastType.success);
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}
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/// 显示警告提示
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static void warning(BuildContext context, String message) {
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show(context, message: message, type: TopToastType.warning);
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}
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/// 显示错误提示
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static void error(BuildContext context, String message) {
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show(context, message: message, type: TopToastType.error);
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}
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/// 显示信息提示
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static void info(BuildContext context, String message) {
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show(context, message: message, type: TopToastType.info);
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}
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/// 隐藏当前显示的提示
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static void hide() {
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_currentOverlay?.remove();
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_currentOverlay = null;
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}
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}
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/// 顶部吐司提示组件的内部实现
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class _TopToastWidget extends StatefulWidget {
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const _TopToastWidget({
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required this.message,
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required this.type,
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required this.onDismiss,
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});
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final String message;
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final TopToastType type;
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final VoidCallback onDismiss;
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@override
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State<_TopToastWidget> createState() => _TopToastWidgetState();
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}
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class _TopToastWidgetState extends State<_TopToastWidget>
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with SingleTickerProviderStateMixin {
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late AnimationController _animationController;
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late Animation<double> _slideAnimation;
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late Animation<double> _opacityAnimation;
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@override
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void initState() {
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super.initState();
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_animationController = AnimationController(
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duration: const Duration(milliseconds: 300),
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vsync: this,
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);
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_slideAnimation = Tween<double>(
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begin: -1.0,
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end: 0.0,
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).animate(CurvedAnimation(
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parent: _animationController,
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curve: Curves.easeOutCubic,
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));
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_opacityAnimation = Tween<double>(
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begin: 0.0,
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end: 1.0,
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).animate(CurvedAnimation(
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parent: _animationController,
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curve: Curves.easeOut,
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));
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// 开始动画
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_animationController.forward();
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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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/// 获取提示类型对应的配置
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_ToastConfig _getConfig(bool isDark) {
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switch (widget.type) {
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case TopToastType.success:
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return _ToastConfig(
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icon: Icons.check_circle_outline,
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backgroundColor: WebTheme.success,
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textColor: Colors.white,
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);
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case TopToastType.warning:
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return _ToastConfig(
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icon: Icons.warning_outlined,
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backgroundColor: WebTheme.warning,
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textColor: Colors.white,
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);
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case TopToastType.error:
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return _ToastConfig(
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icon: Icons.error_outline,
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backgroundColor: WebTheme.error,
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textColor: Colors.white,
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);
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case TopToastType.info:
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return _ToastConfig(
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icon: Icons.info_outline,
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backgroundColor: isDark ? WebTheme.darkGrey100 : WebTheme.white,
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textColor: isDark ? WebTheme.darkGrey800 : WebTheme.grey800,
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);
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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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final isDark = Theme.of(context).brightness == Brightness.dark;
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final config = _getConfig(isDark);
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return AnimatedBuilder(
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animation: _animationController,
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builder: (context, child) {
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return Positioned(
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top: 20 + (_slideAnimation.value * 60), // 从顶部向下滑入
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left: 0,
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right: 0,
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child: Opacity(
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opacity: _opacityAnimation.value,
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child: Center(
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child: Material(
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color: Colors.transparent,
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child: Container(
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constraints: const BoxConstraints(
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maxWidth: 400,
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minWidth: 200,
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),
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margin: const EdgeInsets.symmetric(horizontal: 16),
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padding: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 12,
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),
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decoration: BoxDecoration(
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color: config.backgroundColor,
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borderRadius: BorderRadius.circular(8),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.15),
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offset: const Offset(0, 4),
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blurRadius: 12,
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spreadRadius: 0,
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),
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],
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border: widget.type == TopToastType.info
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? Border.all(
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color: isDark
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? WebTheme.darkGrey300
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: WebTheme.grey300,
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width: 1,
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)
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: null,
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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config.icon,
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size: 18,
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color: config.textColor,
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),
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const SizedBox(width: 8),
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Flexible(
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child: Text(
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widget.message,
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style: TextStyle(
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color: config.textColor,
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fontSize: 14,
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fontWeight: FontWeight.w500,
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),
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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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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},
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);
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}
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}
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/// 提示配置类
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class _ToastConfig {
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const _ToastConfig({
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required this.icon,
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required this.backgroundColor,
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required this.textColor,
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});
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final IconData icon;
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final Color backgroundColor;
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final Color textColor;
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}
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