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) {
  return Path()
    // Circle (円)
    ..addOval(
      Rect.fromCircle(
        center: center ?? Offset(size.width / 2, size.height / 2),
        radius: radius ?? size.width * 0.25,
      ),
    )
    // Overall drawing (全体描画)
    ..addRect(Rect.fromLTWH(0.0, 0.0, size.width, size.height))
    // Hollow out a circle (くり抜き)
    ..fillType = PathFillType.evenOdd;
}