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    <p>Here is how to popup a menu after right-clicking on a node in JUNG2 and later choose to center to this node:</p> <pre><code>graphMouse.add(new MyPopupGraphMousePlugin()); /** * a GraphMousePlugin that offers popup * menu support */ protected class MyPopupGraphMousePlugin extends AbstractPopupGraphMousePlugin implements MouseListener { public MyPopupGraphMousePlugin() { this(MouseEvent.BUTTON3_MASK); } public MyPopupGraphMousePlugin(int modifiers) { super(modifiers); } /** * If this event is over a node, pop up a menu to * allow the user to center view to the node * * @param e */ protected void handlePopup(MouseEvent e) { final VisualizationViewer&lt;Node,Link&gt; vv = (VisualizationViewer&lt;Node,Link&gt;)e.getSource(); final Point2D p = e.getPoint(); GraphElementAccessor&lt;Node,Link&gt; pickSupport = vv.getPickSupport(); if(pickSupport != null) { final Node station = pickSupport.getVertex(vv.getGraphLayout(), p.getX(), p.getY()); if(station != null) { JPopupMenu popup = new JPopupMenu(); String center = "Center to Node"; popup.add(new AbstractAction("&lt;html&gt;&lt;center&gt;" + center) { public void actionPerformed(ActionEvent e) { MutableTransformer view = vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.VIEW); MutableTransformer layout = vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.LAYOUT); Point2D ctr = vv.getCenter(); Point2D pnt = view.inverseTransform(ctr); double scale = vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.VIEW).getScale(); double deltaX = (ctr.getX() - p.getX())*1/scale; double deltaY = (ctr.getY() - p.getY())*1/scale; Point2D delta = new Point2D.Double(deltaX, deltaY); layout.translate(deltaX, deltaY); } }); popup.show(vv, e.getX(), e.getY()); } else { } } } } </code></pre> <p><strong>Edited:</strong> Finally! the correct node-to-center-view with scale factor calculation...</p>
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    1. POHow to programatically pan a VisualizationViewer with Jung (the java library)?
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    1. COActually, this code has a problem too. Managing the scale is not enough, when dezooming the computation of the center of the view in the space of the layout is not correct... The true solution is still missing...
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    2. COClarification: when zooming and dezooming with the mouse wheel and a GraphZoomPane, there is an implicit translation of the view, the problem is here i think.
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    3. COWhen I provided this solution, I tested it on a `StaticLayout` which is used in JUNG2 **WorldMapGraphDemo.class** sample. It was really easy to validate the target position with this layout. To double-check view position, you may refer to http://stackoverflow.com/questions/5663897/how-to-get-a-vertex-coordinate-in-jung/5665969#5665969
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