handleThumbPressVertical method
Handler called when a press on the vertical scrollbar thumb has been recognized.
Cancels the Timer associated with the fade animation of the scrollbar.
Implementation
@override
void handleThumbPressVertical() {
super.handleThumbPressVertical();
_thicknessAnimationControllerV.forward().then<void>(
(_) => HapticFeedback.mediumImpact(),
);
}