public void SetTarget(OverlayDropZoneBase target)
{
if (m_Target == target)
{
return;
}
if (m_Target != null)
{
foreach (var c in m_DropZoneClasses)
{
RemoveFromClassList(c);
}
}
m_Target = target;
m_DropZoneClasses.Clear();
if (m_Target != null)
{
m_Target.PopulateDestMarkerClassList(m_DropZoneClasses);
SetBounds(m_Target.GetTargetWorldBounds());
style.display = DisplayStyle.Flex;
foreach (var c in m_DropZoneClasses)
{
AddToClassList(c);
}
}
else
{
style.display = DisplayStyle.None;
}
}
OverlayDropZoneBase GetOverlayDropZone(Vector2 mousePosition, Overlay ignoreTarget)
{
//keep mouse position within bounds for picking, mathf.epsilon is too small
mousePosition.x = Mathf.Clamp(mousePosition.x, canvasRoot.worldBound.xMin + k_Epsilon,
canvasRoot.worldBound.xMax - k_Epsilon);
mousePosition.y = Mathf.Clamp(mousePosition.y, canvasRoot.worldBound.yMin + k_Epsilon,
canvasRoot.worldBound.yMax - k_Epsilon);
//get list of items under mouse
s_PickingBuffer.Clear();
canvasRoot.panel.PickAll(mousePosition, s_PickingBuffer);
OverlayDropZoneBase result = null;
foreach (var visualElement in s_PickingBuffer)
{
if (visualElement.parent is OverlayDropZoneBase dropZone &&
dropZone.CanAcceptTarget(ignoreTarget) &&
(result == null || dropZone.priority > result.priority))
{
result = dropZone;
}
}
return(result);
}
public ToolbarOverlayContainer()
{
AddToClassList(k_ToolbarClassName);
m_NoElementDropZone = new HiddenToolbarDropZone(this)
{
name = "NoElementToolbarDropZone"
};
Add(m_NoElementDropZone);
}