private Rectangle FindMovementRect(KryptonDockingDockspace dockspaceElement, Rectangle moveRect)
{
// Find the available inner rectangle of our containing control
Rectangle innerRect = DockingHelper.InnerRectangle(Control);
// How much can we reduce the width/height of the dockspace to reach the minimum
Size dockspaceMinimum = dockspaceElement.DockspaceControl.MinimumSize;
int reduceWidth = Math.Max(dockspaceElement.DockspaceControl.Width - dockspaceMinimum.Width, 0);
int reduceHeight = Math.Max(dockspaceElement.DockspaceControl.Height - dockspaceMinimum.Height, 0);
// Get the minimum size requested for the inner area of the control
Size innerMinimum = Size.Empty;
KryptonDockingControl dockingControl = GetParentType(typeof(KryptonDockingControl)) as KryptonDockingControl;
if (dockingControl != null)
{
innerMinimum = dockingControl.InnerMinimum;
}
// How much can we expand the width/height of the dockspace to reach the inner minimum
int expandWidth = Math.Max(innerRect.Width - innerMinimum.Width, 0);
int expandHeight = Math.Max(innerRect.Height - innerMinimum.Height, 0);
// Limit check we are not growing bigger than the maximum allowed
Size dockspaceMaximum = dockspaceElement.DockspaceControl.MaximumSize;
if (dockspaceMaximum.Width > 0)
{
expandWidth = Math.Min(expandWidth, dockspaceMaximum.Width);
}
if (dockspaceMaximum.Height > 0)
{
expandHeight = Math.Min(expandHeight, dockspaceMaximum.Height);
}
// Allow movement rectangle to extend inwards according to inner rectangle and outwards according to dockspace size
Rectangle retRect = Rectangle.Empty;
switch (Edge)
{
case DockingEdge.Left:
retRect = new Rectangle(moveRect.X - reduceWidth, moveRect.Y, moveRect.Width + reduceWidth + expandWidth, moveRect.Height);
break;
case DockingEdge.Right:
retRect = new Rectangle(moveRect.X - expandWidth, moveRect.Y, moveRect.Width + reduceWidth + expandWidth, moveRect.Height);
break;
case DockingEdge.Top:
retRect = new Rectangle(moveRect.X, moveRect.Y - reduceHeight, moveRect.Width, moveRect.Height + reduceHeight + expandHeight);
break;
case DockingEdge.Bottom:
retRect = new Rectangle(moveRect.X, moveRect.Y - expandHeight, moveRect.Width, moveRect.Height + reduceHeight + expandHeight);
break;
}
// We do not allow negative width/height
retRect.Width = Math.Max(retRect.Width, 0);
retRect.Height = Math.Max(retRect.Height, 0);
return(retRect);
}
