onHorizontalDragUpdate property
GestureDragUpdateCallback?
get
onHorizontalDragUpdate
Called when the user scrolls to the left or to the right.
Implementation
GestureDragUpdateCallback? get onHorizontalDragUpdate =>
_onHorizontalDragUpdate;
set
onHorizontalDragUpdate
(GestureDragUpdateCallback? value)
Implementation
set onHorizontalDragUpdate(GestureDragUpdateCallback? value) {
if (_onHorizontalDragUpdate == value) {
return;
}
final bool hadHandler = _onHorizontalDragUpdate != null;
_onHorizontalDragUpdate = value;
if ((value != null) != hadHandler) {
markNeedsSemanticsUpdate();
}
}