paint method Null safety

  1. @override
void paint(
  1. Context context
)
override

Draw itself and its children, according to the calculated box.offset

Implementation

@override
void paint(Context context) {
  super.paint(context);

  if (_child != null) {
    final mat = Matrix4.identity();
    mat.translate(box!.x, box!.y);
    context.canvas
      ..saveContext()
      ..setTransform(mat);
    _child!.paint(context);
    context.canvas.restoreContext();
  }
}