[news.eclipse.tools.gef] Re: draw2d: label follows figure

[Christophe Alexandre <alexandre@xxxxxxxxxxxx>]

Hi all,
I've been using the first proposed technique to add Labels following 
connectors. Works great.
My problem is now that when I want to move the connectors, the 
constraint I get in the method :
createChangeConstraintCommand(EditPart child, Object constraint);
is computed from the figure bounds and not from the HandleBounds bounds.

The position of the constraint I get is the bounding box of all the 
figure and not the Rectangle getHandleBounds().

I use the position of the new bounds to see if it's a legal position, my 
connectors are able to move around their owner.

Does someone know if there is a way to get the HandleBounds bounds of 
the moved object from the createChangeConstraintCommand method ?

Regards.
Christophe




Nhu Le a écrit :
> If you want a label that is always at the same location wrt the figure, 
> then you have to create your own figure with some transparent border to 
> put the label (to create the illusion that the label is outside the 
> figure).  Look into getHandleBounds() of interface HandleBounds.
>
> If you want a label that can be moved anywhere on the screen (like in 
> the case of a label of a port for a component) then you may want to 
> create another layer for your labels and create a label locator class 
> (extends AbstractLocator).  The parent-child figure relationship will 
> obviously not like usual but since the label should be the leaf of the 
> relationship tree, you can probably create a simple (like getOwner()???) 
> just so that you can get to the figure from the label (to replace 
> getParent()).
>
> Nhu
>
> Aleksandr Kravets wrote:
> > Hello,
> >
> > In my GEF application I have a figure which is basically an 
> > ImageFigure. I am looking for a way to create a label that follows 
> > that figure. I tried using DelegatingLayout on my figure, but of 
> > course the label is positioned in the figure, may be there is a way to 
> > offset the positioning of the label so it's outside the figure?
> >
> > Thanks for your help,
> > Alex