DelegatedTransitionBuilder typedef
Signature for a builder used to control a page's exit transition.
When a new route enters the stack, the animation argument is typically
used to control the entery and exit transition of the topmost route. The exit
transition of the route just below the new route is controlled with the
secondaryAnimation, which also controls the transition of the old route
when the topmost route is popped off the stack.
Typically used as the argument for ModalRoute.delegatedTransition.
Implementation
typedef DelegatedTransitionBuilder = Widget? Function(BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation, bool allowSnapshotting, Widget? child);