createShader method

Shader createShader(Rect bounds)

Creates a shader that tiles this pattern.

Implementation

Shader createShader(Rect bounds) {
  final recorder = ui.PictureRecorder();
  final canvas = Canvas(recorder);
  final size = Size(width, height);

  // Draw background
  if (backgroundColor.a > 0) {
    canvas.drawRect(
      Rect.fromLTWH(0, 0, width, height),
      Paint()..color = backgroundColor,
    );
  }

  // Draw pattern
  drawPattern(canvas, size);

  final picture = recorder.endRecording();
  final image = picture.toImageSync(width.ceil(), height.ceil());

  return ImageShader(
    image,
    TileMode.repeated,
    TileMode.repeated,
    Matrix4.identity().storage,
  );
}