transform method

@override Widget transform(Widget item, TransformInfo info)

Return a transformed widget, based on child and TransformInfo

Implementation

@override
Widget transform(Widget item, TransformInfo info) {
  var position = info.position;
  var child = item;
  if (scale != null) {
    var scaleFactor = (1 - position.abs()) * (1 - scale!);
    var rawScale = scale! + scaleFactor;

    child = Transform.scale(
      scale: rawScale,
      child: item,
    );
  }

  if (fade != null) {
    var fadeFactor = (1 - position.abs()) * (1 - fade!);
    var opacity = fade! + fadeFactor;
    child = Opacity(
      opacity: opacity,
      child: child,
    );
  }
  if (margin != null) {
    child = Container(
      margin: EdgeInsets.only(left: margin!, right: margin!),
      child: child,
    );
  }
  return child;
}