public void AnchorPanel(IPanelGroupElement source, IPanelGroupElement anchor, Direction anchorDirection)
{
PanelGroup group = anchor.Group;
if (group is UnanchoredPanelGroup)
{
Debug.LogError("Can not anchor to an unanchored panel!");
return;
}
Vector2 size;
Panel panel = source as Panel;
if (panel != null)
{
size = panel.IsDocked ? panel.FloatingSize : panel.Size;
}
else
{
((PanelGroup)source).Internal.UpdateLayout();
size = source.Size;
}
// Fill the whole anchored area in order not to break other elements' sizes on layout update
if (anchorDirection == Direction.Left || anchorDirection == Direction.Right)
{
if (anchor.Size.y > 0f)
{
size.y = anchor.Size.y;
}
}
else
{
if (anchor.Size.x > 0f)
{
size.x = anchor.Size.x;
}
}
if (panel != null)
{
panel.RectTransform.sizeDelta = size;
}
else
{
((PanelGroup)source).Internal.UpdateBounds(source.Position, size);
}
bool addElementAfter = anchorDirection == Direction.Right || anchorDirection == Direction.Top;
if (group.IsInSameDirection(anchorDirection))
{
if (addElementAfter)
{
group.AddElementAfter(anchor, source);
}
else
{
group.AddElementBefore(anchor, source);
}
}
else
{
IPanelGroupElement element1, element2;
if (addElementAfter)
{
element1 = anchor;
element2 = source;
}
else
{
element1 = source;
element2 = anchor;
}
PanelGroup newGroup = new PanelGroup(anchor.Canvas, anchorDirection);
newGroup.AddElement(element1);
newGroup.AddElement(element2);
group.Internal.ReplaceElement(anchor, newGroup);
}
if (panel != null)
{
if (draggedPanel == panel)
{
draggedPanel = null;
}
panel.RectTransform.SetAsFirstSibling();
if (panel.Internal.ContentScrollRect != null)
{
panel.Internal.ContentScrollRect.OnDrag(nullPointerEventData);
}
}
}
