SizeTransition constructor
Creates a size transition.
The axis argument defaults to Axis.vertical. The axisAlignment defaults to zero, which centers the child along the main axis during the transition.
Implementation
const SizeTransition({
super.key,
this.axis = Axis.vertical,
required Animation<double> sizeFactor,
this.axisAlignment = 0.0,
this.fixedCrossAxisSizeFactor,
this.child,
}) : assert(fixedCrossAxisSizeFactor == null || fixedCrossAxisSizeFactor >= 0.0),
super(listenable: sizeFactor);