void OnPointerDown(PointerDownEvent e)
{
if (m_Active)
{
e.StopImmediatePropagation();
return;
}
if (CanStartManipulation(e))
{
var ve = (e.currentTarget as VisualElement);
m_Header = ve.GetFirstAncestorOfType <MultiColumnCollectionHeader>();
preview = m_Column.collection.resizePreview;
if (preview)
{
if (m_PreviewElement == null)
{
m_PreviewElement = new MultiColumnHeaderColumnResizePreview();
}
VisualElement previewParent = m_Header.GetFirstAncestorOfType <ScrollView>()?.parent ?? m_Header.parent;
previewParent.hierarchy.Add(m_PreviewElement);
}
columnLayout = m_Header.columnLayout;
m_Start = ve.ChangeCoordinatesTo(m_Header, e.localPosition);
BeginDragResize(m_Start.x);
m_Active = true;
target.CaptureMouse();
e.StopPropagation();
}
}
void OnPointerDown(PointerDownEvent evt)
{
if (CanStartManipulation(evt))
{
m_Panning = true;
m_ActivatingButton = evt.button;
target.CaptureMouse();
evt.StopImmediatePropagation();
}
}
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();
}
}
}
protected void OnPointerDown(PointerDownEvent e)
{
if (m_Active)
{
e.StopImmediatePropagation();
return;
}
if (CanStartManipulation(e))
{
m_Start = e.localPosition;
m_Active = true;
target.CapturePointer(e.pointerId);
e.StopPropagation();
}
}
