VitNX_DockGroup.EnsureVisible Method

public void EnsureVisible()
 {
     if (DockArea != VitNX_DockArea.Document)
         return;
     if (VisibleContent == null)
         return;
     var width = ClientRectangle.Width - Padding.Horizontal - _tabArea.DropdownRectangle.Width;
     var offsetArea = new Rectangle(Padding.Left, 0, width, 0);
     var tab = _tabs[VisibleContent];
     if (tab.ClientRectangle.IsEmpty)
         return;
     if (RectangleToTabArea(tab.ClientRectangle).Left < offsetArea.Left)
         _tabArea.Offset = tab.ClientRectangle.Left;
     else if (RectangleToTabArea(tab.ClientRectangle).Right > offsetArea.Right)
         _tabArea.Offset = tab.ClientRectangle.Right - width;
     if (_tabArea.TotalTabSize < offsetArea.Width)
         _tabArea.Offset = 0;
     if (_tabArea.TotalTabSize > offsetArea.Width)
     {
         var orderedContent = _contents.OrderBy(x => x.Order);
         var lastTab = _tabs[orderedContent.Last()];
         if (lastTab != null)
         {
             if (RectangleToTabArea(lastTab.ClientRectangle).Right < offsetArea.Right)
                 _tabArea.Offset = lastTab.ClientRectangle.Right - width;
         }
     }
     Invalidate();
 }