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FlowLayout & resizing figures? [message #529091]

Thu, 22 April 2010 22:09

Alain

Messages: 20
Registered: March 2010

Junior Member

In a GEF project, when I installed a FlowLayoutEditPolicy on an EditPart whose figures use FlowLayout as Layoutmanager.
I can't resize my figures. I tried to solve the problem by installing another editpolicy : resizableeditpolicy, then I remark that I can move and resize figures, but they don't stay in place and return to their original place.
Do you have any Idea how to resize figures in this case?
Thank you in advance.

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Re: FlowLayout & resizing figures? [message #535570 is a reply to message #529091]

Mon, 24 May 2010 15:53

Alain

Messages: 20
Registered: March 2010

Junior Member

I finally find a way to resize figures with FlowLayout:
the idea is that, on the concerned editpart (which inherits from FlowLayoutEditPolicy) I override this method this way:

protected EditPolicy createChildEditPolicy(EditPart child) {

FlowResizableEditPolicy policy = new FlowResizableEditPolicy();
policy.setResizeDirections(PositionConstants.WEST
| PositionConstants.EAST
| PositionConstants.NORTH
| PositionConstants.SOUTH
);
return policy;
}

then, inside the FlowResizableEditPolicy class I overrided this method this way:

protected Command getResizeCommand(ChangeBoundsRequest request){

ChangeConstraintCommand cmd= new ChangeConstraintCommand();
//this is just for setting the model whose constaints will change
cmd.setPageElement((PageElement)getHost().getModel());
// this is just for setting new constraint of the passed model element
cmd.setConstraint(new Rectangle(
getHostFigure().getBounds().x,
getHostFigure().getBounds().y,
getHostFigure().getBounds().width+request.getSizeDelta().wid th,
getHostFigure().getBounds().height+request.getSizeDelta().he ight));
return cmd;
}

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