[news.eclipse.modeling.gmf] Re: Length of a ConnectionNodeEditPart

[addur737@xxxxxxxx (Artur Kronenberg)]

Hi,

your decoration should be referencing its source and its target. You can 
get the locations of those two and calculate the difference to get the 
length of the connection edit part.

Best,
Artur

josiaspaesjr wrote:

> Hi all,

> I have a class that extends the class ConnectionNodeEditPart. I need to 
> retrieve the size of this connection (1) to put the decorator always at 
> the center of the connection. There is a way to do or suggest another 
> solution?

> For example:

> (1)http://img16.imageshack.us/img16/8229/lenghtconnection.jpg

> Following code decorator:

> private RotatableDecoration createTargetDecoration() {
> 			PolygonDecoration df = new PolygonDecoration();
> 			PointList pl = new PointList();
> 			pl.addPoint(-1,-4);
> 			pl.addPoint(-3,-3);
> 			pl.addPoint(-4,-1);
> 			pl.addPoint(-4,1);
> 			pl.addPoint(-3,3);
> 			pl.addPoint(-1,4);
> 			df.setTemplate(pl);
> 			df.setScale(getMapMode().DPtoLP(7), getMapMode().DPtoLP(3));
> 			df.setBackgroundColor(DF_WHITE);
> 			df.setForegroundColor(DF_BLACK);
> 			return df;
> 		}

> Thanks
> Josias Paes