public Point ConstrainLocation(DockItemsControl requestor, Size measureBounds, Point itemCurrentLocation, Size itemCurrentSize,
Point itemDesiredLocation, Size itemDesiredSize)
{
var fixedItems = requestor.FixedItemCount;
var lowerBound = fixedItems == 0
? -1d
: GetLocationInfo(requestor.DockItems()
.Take(fixedItems)
.Last()).End + _itemOffset - 1;
return(new Point(
_orientation == Orientation.Vertical
? 0
: Math.Min(Math.Max(lowerBound, itemDesiredLocation.X), (measureBounds.Width) + 1),
_orientation == Orientation.Horizontal
? 0
: Math.Min(Math.Max(lowerBound, itemDesiredLocation.Y), (measureBounds.Height) + 1)
));
}
private bool IsMyItem(DockItem item)
{
return(_dockItemsControl != null && _dockItemsControl.DockItems().Contains(item));
}