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

// class RoundedRectIndicator extends Decoration {
//   final BoxPainter _painter;

//   RoundedRectIndicator({
//     required Color color,
//     required double radius,
//     double padding = 0.0,
//     double weight = 3.0,
//   }) : _painter = _RectPainter(color, radius, padding, weight);
  
//   @override
//   BoxPainter createBoxPainter([VoidCallback onChanged]) {
//     // TODO: implement createBoxPainter
//     throw UnimplementedError();
//   }

//   // @override
//   // BoxPainter createBoxPainter([onChanged]) {
//   //   return _painter;
//   // }
// }

// class _RectPainter extends BoxPainter {
//   final Paint _paint;
//   final double radius;
//   final double padding;
//   final double weight;
//   final indicatorPaddingBottom = 4.0;

//   _RectPainter(Color color, this.radius, this.padding, this.weight)
//       : _paint = Paint()
//           ..color = color
//           ..isAntiAlias = true;

//   @override
//   void paint(Canvas canvas, Offset offset, ImageConfiguration cfg) {
//     var width = cfg.size.width;
//     var height = cfg.size.height;

//     var left = 0.0;
//     var top = height - indicatorPaddingBottom;
//     var right = width;
//     var bottom = height - weight - indicatorPaddingBottom;

//     //calculate offset
//     left = left + offset.dx + padding;
//     right = right + offset.dx - padding;

//     var rect = RRect.fromLTRBAndCorners(left, top, right, bottom,
//         topLeft: Radius.circular(radius),
//         bottomLeft: Radius.circular(radius),
//         bottomRight: Radius.circular(radius),
//         topRight: Radius.circular(radius));
//     canvas.drawRRect(rect, _paint);
//   }
// }