/// <summary>
/// Called when the user or program code tries to move or resize the shape, and when the shape is initially created.
/// In this case, we restrict the ComponentTerminal to be at a fixed position on the shape, with a fixed size.
/// </summary>
/// <param name="shape">The shape that is being moved or created.</param>
/// <param name="proposedBounds">What the user or code would like.</param>
/// <returns>The permitted bounds that are closest to the proposedBounds.</returns>
public override RectangleD GetCompliantBounds(ShapeElement shape, RectangleD proposedBounds)
{
ComponentTerminal terminal = shape.ModelElement as ComponentTerminal;
if (terminal == null)
{
return(proposedBounds);
}
ComponentTerminalShape terminalShape = shape as ComponentTerminalShape;
ComponentShape componentShape = terminalShape.ParentShape as ComponentShape;
if (componentShape == null)
{
return(proposedBounds);
}
// Location depends on which terminal it is, of which type of shape.
PointD relativeLocation = componentShape.GetTerminalLocation(terminal);
if (relativeLocation.X > 0 || relativeLocation.Y > 0)
{
return(new RectangleD(relativeLocation.X - 0.025, relativeLocation.Y - 0.025, proposedBounds.Width, proposedBounds.Height));
}
else
{
return(proposedBounds);
}
}
public override void OnDoubleClick(DiagramPointEventArgs e)
{
base.OnDoubleClick(e);
ComponentShape shape = e.HitDiagramItem.Shape as ComponentShape;
if (ClickReceiverEvent != null && shape != null)
{
ClickReceiverEvent(shape);
e.Handled = true; // else it will be passed to parent shape too.
}
}
/// <summary>
/// Called when the decorator is to be displayed on a particular shape instance.
/// Called whenever the diagram is refreshed.
/// </summary>
/// <param name="parentShape">The shape on which the image is to be displayed.</param>
/// <returns></returns>
public override Image GetDisplayImage(ShapeElement parentShape)
{
ComponentShape componentShape = parentShape as ComponentShape;
RotateFlipType rotateFlip = rotateFlips[componentShape.RotateFlip];
if (cachedImage[componentShape.RotateFlip] == null)
{
Image image = base.GetDisplayImage(parentShape).Clone() as Image;
if (image != null)
{
image.RotateFlip(rotateFlip);
cachedImage[componentShape.RotateFlip] = image;
}
}
return(cachedImage[componentShape.RotateFlip]);
}
