overlay method

Widget overlay(
  1. Widget overlay,
  2. [Alignment alignment = Alignment.center]
)

Creates a Stack where this overlay will be shown on top of this widget.

Implementation

Widget overlay(
  Widget overlay, [
  Alignment alignment = Alignment.center,
]) {
  return Stack(
    alignment: alignment,
    children: <Widget>[
      this,
      overlay,
    ],
  );
}