onTapDown method
Implementation
void onTapDown(TapDownDetails details) {
// debugPrint('onTapDown');
_tapNodeSet.clear();
NormalEvent motionEvent = NormalEvent(details.localPosition, null);
for (var ele in _gestureNodeSet) {
if (!ele.isInArea(motionEvent.globalPosition)) {
continue;
}
_tapNodeSet.add(ele);
ele.clickDown?.call(motionEvent);
}
}