// Author: fengshengxiong
// Date: 2024/6/2
// Description: 自定义RoundRectSliderThumbShape

import 'package:flutter/material.dart';

class RoundRectSliderThumbShape extends SliderComponentShape {
  final double thumbHeight;
  final double thumbWidth;
  final double thumbRadius;
  final Color thumbColor;

  const RoundRectSliderThumbShape({
    this.thumbHeight = 20.0,
    this.thumbWidth = 20.0,
    this.thumbRadius = 6.0,
    this.thumbColor = Colors.black,
  });

  @override
  Size getPreferredSize(bool isEnabled, bool isDiscrete) {
    return Size(thumbWidth, thumbHeight);
  }

  @override
  void paint(PaintingContext context, Offset center,
      {required Animation<double> activationAnimation,
      required Animation<double> enableAnimation,
      required bool isDiscrete,
      required TextPainter labelPainter,
      required RenderBox parentBox,
      required SliderThemeData sliderTheme,
      required TextDirection textDirection,
      required double value,
      required double textScaleFactor,
      required Size sizeWithOverflow}) {

    final Paint thumbPaint = Paint()
      ..color = thumbColor
      ..style = PaintingStyle.fill;

    final Rect thumbRect = Rect.fromCenter(
      center: center,
      width: thumbWidth,
      height: thumbHeight,
    );

    final RRect thumbRRect = RRect.fromRectAndRadius(
      thumbRect,
      Radius.circular(thumbRadius),
    );

    context.canvas.drawRRect(thumbRRect, thumbPaint);
  }
}