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 void DockControl(Point dropPoint, DockControlContainer container, int dimension)
{
Point containerLocalDropPoint = container.PointToClient(PointToScreen(dropPoint));
int index = 0;
DockedControlCollection controls = container.DockedControls as DockedControlCollection;
foreach (DockingControl child in controls)
{
Rectangle bounds = child.Bounds;
switch (container.Dock)
{
case DockStyle.Top:
case DockStyle.Bottom:
if (bounds.Right >= containerLocalDropPoint.X)
{
if (containerLocalDropPoint.X < (bounds.Left + bounds.Right) / 2)
{
container.DockControl(this, index, dimension);
return;
}
}
break;
case DockStyle.Left:
case DockStyle.Right:
if (bounds.Bottom >= containerLocalDropPoint.Y)
{
if (containerLocalDropPoint.Y < (bounds.Top + bounds.Bottom) / 2)
{
container.DockControl(this, index, dimension);
return;
}
}
break;
}
index += 1;
}
container.DockControl(this, container.DockedControlList.Count, dimension);
}
