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 h = size.height;
  var w = size.width;
  Path path = Path();

  // Left or Horizontal
  path.moveTo(0, 0);
  double x = 0;
  double y = 0;
  double c = w - depth;
  double i = h / points;

  if (edge == Edge.left || edge == Edge.horizontal || edge == Edge.all) {
    while (y < h) {
      path.quadraticBezierTo(depth, y + i / 2, 0, y + i);
      y += i;
    }
  }

  // Bottom or Vertical
  path.lineTo(0, h);
  x = 0;
  y = h;
  c = h - depth;
  i = w / points;

  if (edge == Edge.bottom || edge == Edge.vertical || edge == Edge.all) {
    while (x < w) {
      path.quadraticBezierTo(x + i / 2, c, x + i, y);
      x += i;
    }
  }

  // Right or Horizontal
  path.lineTo(w, h);
  x = w;
  y = h;
  c = w - depth;
  i = h / points;

  if (edge == Edge.right || edge == Edge.horizontal || edge == Edge.all) {
    while (y > 0) {
      path.quadraticBezierTo(c, y - i / 2, w, y - i);
      y -= i;
    }
  }

  // Top or Vertical
  path.lineTo(w, 0);
  x = w;
  y = 0;
  c = h - depth;
  i = w / points;

  if (edge == Edge.top || edge == Edge.vertical || edge == Edge.all) {
    while (x > 0) {
      path.quadraticBezierTo(x - i / 2, depth, x - i, 0);
      x -= i;
    }
  }

  path.close();
  return path;
}