66 lines
2.1 KiB
Dart
66 lines
2.1 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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/// ============================================================
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/// 【CenterToast】居中轻量提示 —— 对标 uni.showToast(icon: 'none')
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///
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/// 一、适用场景：
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/// 表单校验失败（"请填写账号"/"请填写密码"）、轻量成功提示等
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/// 不需要用户确认、1.2s 自动消失、不阻塞交互（IgnorePointer）。
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///
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/// 二、与 SnackBar / ConfirmBox 的分工：
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/// CenterToast → 短暂轻量提示，自动消失，中间弹出
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/// SnackBar → 底部提示（信息可能较长），可手动关闭
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/// ConfirmBox → 需要用户决策的确认框，双按钮
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///
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/// 三、用法：
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/// CenterToast.show(context, '请填写账号');
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/// ============================================================
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class CenterToast {
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CenterToast._();
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static OverlayEntry? _current;
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static void show(
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BuildContext context,
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String msg, {
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Duration duration = const Duration(milliseconds: 1200),
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}) {
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// 连续调用时先移除上一个，避免叠加
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_current?.remove();
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late final OverlayEntry entry;
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entry = OverlayEntry(
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builder: (_) => Positioned.fill(
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child: IgnorePointer(
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child: Center(
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child: Container(
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padding: EdgeInsets.symmetric(horizontal: 20.w, vertical: 14.h),
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decoration: BoxDecoration(
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color: Colors.black.withValues(alpha: 0.75),
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borderRadius: BorderRadius.circular(12.r),
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),
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child: Text(
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msg,
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style: TextStyle(
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fontSize: 14.sp,
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color: Colors.white,
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decoration: TextDecoration.none,
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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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_current = entry;
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Overlay.of(context).insert(entry);
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Future<void>.delayed(duration, () {
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if (entry.mounted && _current == entry) {
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entry.remove();
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_current = null;
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}
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});
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}
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}
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