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) {
  var path = Path();
  var firstControlPoint;
  var firstEndPoint;
  var secondControlPoint;
  var secondEndPoint;
  if (verticalPosition == VerticalPosition.BOTTOM &&
      horizontalPosition == HorizontalPosition.LEFT) {
    firstEndPoint = Offset(size.width * .5, size.height - 20);
    firstControlPoint = Offset(size.width * .25, size.height - 30);
    secondEndPoint = Offset(size.width, size.height - 50);
    secondControlPoint = Offset(size.width * .75, size.height - 10);

    path
      ..lineTo(0.0, size.height)
      ..quadraticBezierTo(firstControlPoint.dx, firstControlPoint.dy,
          firstEndPoint.dx, firstEndPoint.dy)
      ..quadraticBezierTo(secondControlPoint.dx, secondControlPoint.dy,
          secondEndPoint.dx, secondEndPoint.dy)
      ..lineTo(size.width, 0.0)
      ..close();
  } else if (verticalPosition == VerticalPosition.BOTTOM &&
      horizontalPosition == HorizontalPosition.RIGHT) {
    firstEndPoint = Offset(size.width * .5, size.height - 20);
    firstControlPoint = Offset(size.width * .25, size.height - 10);
    secondEndPoint = Offset(size.width, size.height);
    secondControlPoint = Offset(size.width * .75, size.height - 30);

    path
      ..lineTo(0.0, size.height - 30)
      ..quadraticBezierTo(firstControlPoint.dx, firstControlPoint.dy,
          firstEndPoint.dx, firstEndPoint.dy)
      ..quadraticBezierTo(secondControlPoint.dx, secondControlPoint.dy,
          secondEndPoint.dx, secondEndPoint.dy)
      ..lineTo(size.width, 0.0)
      ..close();
  } else if (verticalPosition == VerticalPosition.TOP &&
      horizontalPosition == HorizontalPosition.RIGHT) {
    firstEndPoint = Offset(size.width * .5, 20);
    firstControlPoint = Offset(size.width * .25, 10);
    secondEndPoint = Offset(size.width, 0);
    secondControlPoint = Offset(size.width * .75, 30);

    path
      ..lineTo(0, 30)
      ..quadraticBezierTo(firstControlPoint.dx, firstControlPoint.dy,
          firstEndPoint.dx, firstEndPoint.dy)
      ..quadraticBezierTo(secondControlPoint.dx, secondControlPoint.dy,
          secondEndPoint.dx, secondEndPoint.dy)
      ..lineTo(size.width, size.height)
      ..lineTo(0.0, size.height)
      ..close();
  } else {
    firstEndPoint = Offset(size.width * .5, 20);
    firstControlPoint = Offset(size.width * .25, 30);
    secondEndPoint = Offset(size.width, 50);
    secondControlPoint = Offset(size.width * .75, 10);

    path
      ..quadraticBezierTo(firstControlPoint.dx, firstControlPoint.dy,
          firstEndPoint.dx, firstEndPoint.dy)
      ..quadraticBezierTo(secondControlPoint.dx, secondControlPoint.dy,
          secondEndPoint.dx, secondEndPoint.dy)
      ..lineTo(size.width, size.height)
      ..lineTo(0.0, size.height)
      ..close();
  }

  return path;
}