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Maintaing a list of BoxRelativeAnchors in a Shape [message #931788]

Wed, 03 October 2012 14:26

Surya Kathayat

Messages: 44
Registered: July 2012

Member

Hi,

I am trying to have incoming links to end at the middle of top line of a node(e.g. rectangle) and all outgoing links to start at the middle of the buttom line of a graphical node. See in the figure, incoming links should end on A and outgoing links on B.

index.php/fa/11705/0/

How this could be done? I though of using BoxRelativeAnchors. I created two box relative anchors and added to the pictorial element of a graphical node, as below.

But I am not sure how can I set proper anchors at the start and end of a connection in the add method of add link feature i.e. in connection.setStart(??); connection.setEnd(??); ??.


@Override
public PictogramElement add(IAddContext context) {
...
...
		final BoxRelativeAnchor boxAnchorIn = peCreateService.createBoxRelativeAnchor(containerShape);
		boxAnchorIn.setRelativeWidth(0.5);
		boxAnchorIn.setRelativeHeight(0.0); 
		boxAnchorIn.setReferencedGraphicsAlgorithm(roundedRectangle);
	      final Rectangle rectangle = gaService.createRectangle(boxAnchorIn);      
	      rectangle.setForeground(manageColor(IdmColors.TASK_BORDER_COLOR));
	      rectangle.setBackground(manageColor(IdmColors.TASK_FILL_COLOR));
	      rectangle.setLineWidth(2);
	      gaService.setLocationAndSize(rectangle, 0, 0, 5, 5);

		
		final BoxRelativeAnchor boxAnchorOut = peCreateService.createBoxRelativeAnchor(containerShape);
		boxAnchorOut.setRelativeWidth(0.5);
		boxAnchorOut.setRelativeHeight(1.0);  
		boxAnchorOut.setReferencedGraphicsAlgorithm(roundedRectangle);
	      final Rectangle rectangleOut = gaService.createRectangle(boxAnchorOut);      
	      rectangleOut.setForeground(manageColor(IdmColors.TASK_BORDER_COLOR));
	      rectangleOut.setBackground(manageColor(IdmColors.TASK_FILL_COLOR));
	      rectangleOut.setLineWidth(2);
	      gaService.setLocationAndSize(rectangleOut, -5, -5, 5, 5);
...
...
}

Attachment: anchors.gif
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[Updated on: Wed, 03 October 2012 15:29]

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Re: Maintaing a list of BoxRelativeAnchors in a Shape [message #933065 is a reply to message #931788]

Thu, 04 October 2012 17:45

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Hi Surja,

You would do that in the add method of your add connection feature. There you can navigate from your chopbox anchor or your shape to the right box relative anchor and set that as anchor for the new connection. This is possible for both source and target anchor.

Michael

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Re: Maintaing a list of BoxRelativeAnchors in a Shape [message #933869 is a reply to message #933065]

Fri, 05 October 2012 12:14

Surya Kathayat

Messages: 44
Registered: July 2012

Member

Thanks Michael.

Again, how to use/attach custom properties(for example assign Id to each BoxRelativeAnchor in a ContainerShape) to the anchors when creating them?
I don't find any useful information on this in Javadoc for BoxRelativeAnchor.

Best Regards
Surya

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