private void OnFingerDown(PointerDownEvent evt)
{
if (evt.pointerType == PointerType.touch && evt.currentTarget == evt.target)
{
var ve = evt.target as VisualElement;
OnDown(ve);
// Prevent compatibility mouse events from being fired for this pointer.
evt.PreventDefault();
}
}
private void UpdateValueOnPointerDown(PointerDownEvent evt)
{
if (CanStartDrag(evt.button, evt.localPosition))
{
if (evt.pointerId != PointerId.mousePointerId)
{
evt.PreventDefault();
m_DragElement.CapturePointer(evt.pointerId);
ProcessDownEvent(evt);
}
else
{
evt.StopImmediatePropagation();
}
}
}