getClip method

@override Path getClip(Size size)

Returns a description of the clip given that the render object being clipped is of the given size.

Implementation

@override
Path getClip(Size size) {
  final path = Path()
    // draw rect
    ..addRRect(RRect.fromRectAndRadius(
      Rect.fromLTWH(0, 0, size.width, size.height),
      Radius.circular(borderRadius!),
    ));

  // draw small clip circles
  final clipContainerSize = size.height - smallClipRadius!;
  final smallClipSize = smallClipRadius! * 2;
  final smallClipBoxSize = clipContainerSize / numberOfSmallClips!;
  final smallClipPadding = (smallClipBoxSize - smallClipSize) / 2;
  final smallClipStart = smallClipRadius! / 2;

  final clipPath = Path();

  List.generate(numberOfSmallClips!, (index) {
    final boxX = smallClipStart + smallClipBoxSize * index;
    final centerX = boxX + smallClipPadding + smallClipRadius!;

    return Offset(0, centerX);
    // ignore: avoid_function_literals_in_foreach_calls
  }).forEach((centerOffset) {
    clipPath.addOval(Rect.fromCircle(
      center: centerOffset,
      radius: smallClipRadius!,
    ));
  });

  // combine two path together
  final ticketPath = Path.combine(
    PathOperation.reverseDifference,
    clipPath,
    path,
  );

  return ticketPath;
}