getClip method
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()
..moveTo(size.width, 0) // Start at the top-right corner
..lineTo(0, size.height) // Draw to the bottom-left corner
..lineTo(size.width, size.height) // Draw to the bottom-right corner
..close(); // Close the path
return path;
}