import 'dart:ui';
import 'package:flutter/material.dart';

class FrostedDialog extends StatelessWidget {
  final Widget child;
  final double blurSigma;
  final Color barrierColor;

  const FrostedDialog({
    super.key,
    required this.child,
    this.blurSigma = 5.0,
    this.barrierColor = const Color.fromRGBO(0, 0, 0, 0.5),
  });

  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        // 毛玻璃背景
        BackdropFilter(
          filter: ImageFilter.blur(sigmaX: blurSigma, sigmaY: blurSigma),
          child: Container(
            color: Colors.transparent,
          ),
        ),
        Dialog(
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(20.0),
          ),
          backgroundColor: Colors.transparent, // 背景透明，由 child 自己决定
          child: child,
        ),
      ],
    );
  }
}