paint method

@override void paint(Canvas canvas, Size size)

Method to set roundness

Implementation

@override
void paint(Canvas canvas, Size size) {
  canvas.translate(contextSize.width, 0.0);

  void drawBar(double x, double width) {
    final Paint paint = Paint()
      ..color = backgroundColor
      ..style = PaintingStyle.fill
      ..strokeCap = StrokeCap.round;

    if (width <= 0) {
      return;
    }
    Rect rect = Rect.fromLTWH(x, 0.0, width, size.height);
    switch (circleData ?? CircleData.none) {
      case CircleData.none:
        canvas.drawRRect(
          ///　rounded right corner
          RRect.fromLTRBAndCorners(
            rect.right,
            rect.top,
            rect.left,
            rect.bottom,
            bottomRight: const Radius.circular(10),
            topRight: const Radius.circular(10),
          ),
          paint,
        );
        break;
      case CircleData.leftCircle:
        canvas.drawRRect(
          ///　rounded left corner
          RRect.fromLTRBAndCorners(
            rect.right,
            rect.top,
            rect.left,
            rect.bottom,
            bottomLeft: const Radius.circular(10),
            topLeft: const Radius.circular(10),
          ),
          paint,
        );
        break;
      case CircleData.rightCircle:
        canvas.drawRRect(
          ///　rounded right corner
          RRect.fromLTRBAndCorners(
            rect.right,
            rect.top,
            rect.left,
            rect.bottom,
            bottomRight: const Radius.circular(10),
            topRight: const Radius.circular(10),
          ),
          paint,
        );
        break;
      case CircleData.allCircle:
        canvas.drawRRect(
          ///　rounded all corner
          RRect.fromLTRBAndCorners(
            rect.right,
            rect.top,
            rect.left,
            rect.bottom,
            bottomLeft: const Radius.circular(10),
            topLeft: const Radius.circular(10),
            bottomRight: const Radius.circular(10),
            topRight: const Radius.circular(10),
          ),
          paint,
        );
        break;
    }
    paintBar(size, canvas, textSpan);
  }

  /// 0.0 ~ 1.0 * size.width　Range specification.
  if (value != null) {
    drawBar(0.0, (value?.clamp(0.0, 1.0) ?? 0.0) * size.width);
  } else {
    drawBar(0.0, size.width);
  }
}