handleThumbPress method
Handler called when a press on the scrollbar thumb has been recognized.
Cancels the Timer associated with the fade animation of the scrollbar.
Implementation
@protected
@mustCallSuper
void handleThumbPress() {
assert(_debugCheckHasValidScrollPosition());
_cachedController = _effectiveScrollController;
if (getScrollbarDirection() == null) {
return;
}
_fadeoutTimer?.cancel();
_thumbHold = _cachedController!.position.hold(_disposeThumbHold);
}