bool TryToPickInCanvas(Vector2 mousePosition)
{
var localMouse = m_Canvas.WorldToLocal(mousePosition);
if (!m_Canvas.ContainsPoint(localMouse))
{
m_ParentTracker.Deactivate();
return(false);
}
var pickedElement = Panel.PickAllWithoutValidatingLayout(m_Canvas, mousePosition);
// Don't allow selection of elements inside template instances.
pickedElement = pickedElement.GetClosestElementPartOfCurrentDocument();
// Get Closest valid element.
pickedElement = pickedElement.GetClosestElementThatIsValid(IsPickedElementValid);
if (pickedElement == null)
{
m_ParentTracker.Deactivate();
return(false);
}
m_LastHoverElement = pickedElement;
m_ParentTracker.Activate(pickedElement);
return(true);
}
bool TryToPickInCanvas(Vector2 mousePosition)
{
if (viewport == null)
{
return(false);
}
var localMouse = m_Canvas.WorldToLocal(mousePosition);
if (!m_Canvas.ContainsPoint(localMouse))
{
m_ParentTracker?.Deactivate();
m_PlacementIndicator?.Deactivate();
return(false);
}
var pickedElement = Panel.PickAllWithoutValidatingLayout(m_Canvas, mousePosition);
// Don't allow selection of elements inside template instances or outside current active document.
pickedElement = pickedElement.GetClosestElementPartOfCurrentDocument();
if (pickedElement != null && !pickedElement.IsPartOfActiveVisualTreeAsset(m_PaneWindow.document))
{
pickedElement = null;
}
// Get Closest valid element.
pickedElement = pickedElement.GetClosestElementThatIsValid(IsPickedElementValid);
if (pickedElement == null)
{
m_ParentTracker?.Deactivate();
m_PlacementIndicator?.Deactivate();
m_LastHoverElement = null;
return(false);
}
// The placement indicator might decide to change the parent.
if (SupportsPlacementIndicator() && m_PlacementIndicator != null)
{
m_PlacementIndicator.Activate(pickedElement, mousePosition);
pickedElement = m_PlacementIndicator.parentElement;
}
m_ParentTracker.Activate(pickedElement);
m_LastHoverElement = pickedElement;
if (SupportsPlacementIndicator() && m_PlacementIndicator != null)
{
m_LastHoverElementChildIndex = m_PlacementIndicator.indexWithinParent;
}
return(true);
}
void EndDragInner()
{
EndDrag();
m_LastRowHoverElement?.RemoveFromClassList(s_TreeItemHoverHoverClassName);
m_LastRowHoverElement?.RemoveFromClassList(s_TreeItemHoverWithDragBetweenElementsSupportClassName);
m_DraggedElement.RemoveFromClassList(s_DraggedPreviewClassName);
m_ParentTracker?.Deactivate();
}
