startScroll method
Implementation
bool startScroll(DateTime scrollStartDateTime) {
/// When [ScrollStart] called firstly we look at the [lastScrolledDateTime]
/// If it is null that mean this is first scrolling
/// so we dont controll any sequence and directly yield ScrollState
if (lastScrolledDateTime == null) {
lastScrolledDateTime = scrollStartDateTime;
return true;
} else {
/// If [lastScrolledDateTime] not null thats mean
/// We have to controll difference [lastScrolledDateTime] and [event.scrollStartDateTime]
/// Because [ScrollStart] is calling every Listener [PointerScrollEvent]
/// We are controlling in there about
/// is this event calling from current scrolling sequence or new scroll
/// if difference shorter than 1 second it is meaning we are still in sequence
Duration differenceDuration =
lastScrolledDateTime!.difference(scrollStartDateTime);
if (-differenceDuration.inSeconds > 1) {
lastScrolledDateTime = DateTime.now();
return true;
}
}
return false;
}