private Rectangle GetContolDragDrawRectangle(DockControlContainer container, DockingControl control, Point pointInControl)
{
Rectangle rectangleToDraw = Rectangle.Empty;
Rectangle containerRectangle = control.RectangleToClient(container.RectangleToScreen(container.ClientRectangle));
Rectangle clientRectangle = control.ClientRectangle;
int index = container.DockedControlList.IndexOf(control);
DockingControl controlBefore = GetControlBefore(container, index);
DockingControl controlAfter = GetControlAfter(container, index);
Rectangle bounds = control.Bounds;
Rectangle beforeBounds = (controlBefore == null) ? Rectangle.Empty : controlBefore.Bounds;
Rectangle afterBounds = (controlAfter == null) ? Rectangle.Empty : controlAfter.Bounds;
switch (container.Dock)
{
case DockStyle.Left:
case DockStyle.Right:
if (container.Tabbed)
{
rectangleToDraw = clientRectangle;
}
else if (pointInControl.Y < clientRectangle.Y + (clientRectangle.Height / 2))
{
if (controlBefore == null)
{
rectangleToDraw = clientRectangle;
rectangleToDraw.Height /= 2;
}
else
{
rectangleToDraw = new Rectangle(
beforeBounds.Left, beforeBounds.Top + (beforeBounds.Height / 2),
beforeBounds.Right, (bounds.Top + (bounds.Height / 2)) - (beforeBounds.Top + (beforeBounds.Height / 2)));
rectangleToDraw = control.RectangleToClient(container.RectangleToScreen(rectangleToDraw));
}
}
else
{
if (controlAfter == null)
{
rectangleToDraw = clientRectangle;
rectangleToDraw.Y = clientRectangle.Bottom - (clientRectangle.Height / 2);
rectangleToDraw.Height /= 2;
}
else
{
rectangleToDraw = new Rectangle(
bounds.Left, bounds.Top + (bounds.Height / 2),
bounds.Right, (afterBounds.Top + (afterBounds.Height / 2)) - (bounds.Top + (bounds.Height / 2)));
rectangleToDraw = control.RectangleToClient(container.RectangleToScreen(rectangleToDraw));
}
}
break;
case DockStyle.Bottom:
case DockStyle.Top:
if (container.Tabbed)
{
rectangleToDraw = clientRectangle;
}
else if (pointInControl.X < clientRectangle.X + (clientRectangle.Width / 2))
{
if (controlBefore == null)
{
rectangleToDraw = clientRectangle;
rectangleToDraw.Width /= 2;
}
else
{
rectangleToDraw = new Rectangle(
beforeBounds.Left + (beforeBounds.Width / 2), beforeBounds.Top,
(bounds.Left + (bounds.Width / 2)) - (beforeBounds.Left + (beforeBounds.Width / 2)), beforeBounds.Height);
rectangleToDraw = control.RectangleToClient(container.RectangleToScreen(rectangleToDraw));
}
}
else
{
if (controlAfter == null)
{
rectangleToDraw = clientRectangle;
rectangleToDraw.X = clientRectangle.Right - (clientRectangle.Width / 2);
rectangleToDraw.Width /= 2;
}
else
{
rectangleToDraw = new Rectangle(
bounds.Left + (bounds.Width / 2), bounds.Top,
(afterBounds.Left + (afterBounds.Width / 2)) - (bounds.Left + (bounds.Width / 2)), bounds.Height);
rectangleToDraw = control.RectangleToClient(container.RectangleToScreen(rectangleToDraw));
}
}
break;
default:
break;
}
return(rectangleToDraw);
}
