private Rectangle GetContainerDragDrawRectangle(DockControlContainer container, Point pointInScreen)
{
Point pointInControl = container.PointToClient(pointInScreen);
Rectangle clientRectangle = container.ClientRectangle;
Rectangle rectangleToDraw = Rectangle.Empty;
Rectangle containerRectangle = container.RectangleToScreen(container.ClientRectangle);
switch (container.Dock)
{
case DockStyle.Top:
case DockStyle.Bottom:
if (pointInControl.Y > clientRectangle.Y && pointInControl.Y < clientRectangle.Y + DockingBarSize)
{
rectangleToDraw = containerRectangle;
rectangleToDraw.Height = DockingBarSize;
}
else if (pointInControl.Y < clientRectangle.Bottom && pointInControl.Y > clientRectangle.Bottom - DockingBarSize)
{
rectangleToDraw = containerRectangle;
rectangleToDraw.Y = containerRectangle.Bottom - DockingBarSize;
rectangleToDraw.Height = DockingBarSize;
}
break;
case DockStyle.Left:
case DockStyle.Right:
if (pointInControl.X > clientRectangle.X && pointInControl.X < clientRectangle.X + DockingBarSize)
{
rectangleToDraw = containerRectangle;
rectangleToDraw.Width = DockingBarSize;
}
else if (pointInControl.X < clientRectangle.Right && pointInControl.X > clientRectangle.Right - DockingBarSize)
{
rectangleToDraw = containerRectangle;
rectangleToDraw.X = containerRectangle.Right - DockingBarSize;
rectangleToDraw.Width = DockingBarSize;
}
break;
default:
break;
}
return(rectangleToDraw);
}
private void _toolStripCaption_CaptionDrag(object sender, MouseEventArgs e)
{
Point pointInScreen = this.PointToScreen(e.Location);
DockControlContainer container = _manager.GetContainerAtPoint(_manager.PointToClient(pointInScreen));
if (container == null)
{
Rectangle dragRectangle = DockControlHelpers.GetDropXorDragRect(_manager, pointInScreen, DockingBarSize);
if (!dragRectangle.IsEmpty)
{
_dragger.SetRectangle(_manager.RectangleToScreen(dragRectangle));
return;
}
}
else
{
Rectangle rectangleToDraw = GetContainerDragDrawRectangle(container, pointInScreen);
if (!rectangleToDraw.IsEmpty)
{
_dragger.SetRectangle(rectangleToDraw);
return;
}
if (container.Tabbed)
{
_dragger.SetRectangle(container.RectangleToScreen(container.ClientRectangle));
return;
}
else
{
DockingControl control = container.GetDockingControlAtPoint(container.PointToClient(pointInScreen));
if (control != null)
{
Point pointInControl = control.PointToClient(pointInScreen);
rectangleToDraw = GetContolDragDrawRectangle(container, control, pointInControl);
_dragger.SetRectangle(control.RectangleToScreen(rectangleToDraw));
return;
}
}
}
_dragger.MoveTo(e.Location);
}
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);
}
