AnimationListenerRegistry is a class that has been added to Widget library since version 2.2.0. It holds a list of listeners that are notified when animations start and stop.
These classes register animations in the AnimationListenerRegistry (in Widget 2.4.1):
Adding a listener to this registry may be useful:
- to stop other animation that may slow down the animation,
- to stop a computation that uses a lot the CPU,
- to reduce the quality of a rendering (using nearest neighbour algorithm instead of bilinear interpolation for example),