getClip method

Implementation

@override
Path getClip(Size containerSize) {
  if (hole == null || hole!.size.isEmpty) {
    return Path()
      ..addRect(
          Rect.fromLTWH(0, 0, containerSize.width, containerSize.height));
  }

  final holeRect = Rect.fromLTWH(
    hole!.offset.dx - (hole!.padding?.left ?? 0),
    hole!.offset.dy - (hole!.padding?.top ?? 0),
    hole!.size.width + (hole!.padding?.horizontal ?? 0),
    hole!.size.height + (hole!.padding?.vertical ?? 0),
  );

  final clampedHoleRect = Rect.fromLTRB(
    holeRect.left.clamp(0, containerSize.width),
    holeRect.top.clamp(0, containerSize.height),
    holeRect.right.clamp(0, containerSize.width),
    holeRect.bottom.clamp(0, containerSize.height),
  );

  final path = Path()
    ..addRect(Rect.fromLTWH(0, 0, containerSize.width, containerSize.height));

  final holePath = Path()
    ..addRRect(
      RRect.fromRectAndRadius(
        clampedHoleRect,
        Radius.circular(hole!.radius ?? 0),
      ),
    );

  return Path.combine(PathOperation.difference, path, holePath);
}