reactionFocusFade property Null safety
Controls the radial reaction's opacity animation for focus changes.
Some controls have a radial ink reaction to focus. This animation controls these ink reaction fade-ins and fade-outs.
To paint the actual radial reaction, ToggleablePainter.paintRadialReaction may be used.
Implementation
Animation<double> get reactionFocusFade => _reactionFocusFade;