private Rect PreviewDockSameOrientation(DockDirection dockDirection, SplitterPanel panel, ViewElement viewElement, SplitterLength itemLength, Orientation orientation, int originalIndex)
{
List <UIElement> list = new List <UIElement>();
Point point1 = new Point(0.0, 0.0);
SplitterItem splitterItem1 = new SplitterItem();
Size availableSize = new Size();
availableSize.Width = panel.ActualWidth;
availableSize.Height = panel.ActualHeight;
SplitterItem splitterItem2 = (SplitterItem)null;
foreach (SplitterItem splitterItem3 in panel.Children)
{
list.Add((UIElement)splitterItem3);
if (splitterItem3.Content == viewElement)
{
splitterItem2 = splitterItem3;
panel.Children.IndexOf((UIElement)splitterItem2);
}
}
int index = splitterItem2 != null?list.IndexOf((UIElement)splitterItem2) : originalIndex;
if (dockDirection == DockDirection.Right || dockDirection == DockDirection.Bottom)
{
++index;
}
list.Insert(index, (UIElement)splitterItem1);
SplitterPanel.SetSplitterLength((UIElement)splitterItem1, itemLength);
Point point2 = DpiHelper.DeviceToLogicalUnits(panel.PointToScreen(new Point(0.0, 0.0)));
Rect[] elementBounds;
SplitterPanel.Measure(availableSize, orientation, (IEnumerable)list, false, out elementBounds, panel);
Rect rect = elementBounds[index];
rect.Offset(point2.X, point2.Y);
return(rect);
}