[Jung-support] [jung - Open Discussion] RE: Drag and Drop from JTree to Graph

[SourceForge.net <no...@so...>]

Read and respond to this message at: 
https://sourceforge.net/forum/message.php?msg_id=4186710
By: bardack66

Yeah, I ve a look to theses examples.

In GraphEditorDemo, nothing about that. All is automatised ...

In AddNodeDemo there is : 

<i>
                layout.update();
                if (!vv.isVisRunnerRunning())
                    vv.init();
                vv.repaint();
</i>

In the example, layout is a FRLayout();

But me (I ve doing my application from the GraphEditorDemo), I ve
a SparseGraph()

The problem is: 

SparseGraph has no method : update ()

And when I pass my layout into FRLayout, the onClick on the JPanel , the vertex
appears not at the point of click, but more far ...

Don t understand

Here s my code of the using of JUNGE (method maj must update the graph)

<i>
public class Tableau extends JApplet implements DragGestureListener,
DragSourceListener,
                                    DropTargetListener {
    private static Tableau tableau = null;
    
    Graph graph;
    AbstractLayout layout;
    /**
     * the visual component and renderer for the graph
     */
    VisualizationViewer vv;
    DefaultSettableVertexLocationFunction vertexLocations;
    
    /**
     * create an instance of a simple graph with popup controls to
     * create a graph.
     * 
     */
    private Tableau() {
        // allows the precise setting of initial vertex locations
        vertexLocations = new DefaultSettableVertexLocationFunction();
        // create a simple graph for the demo
        graph = new SparseGraph();
        PluggableRenderer pr = new PluggableRenderer();
        this.layout = new StaticLayout(graph);
        layout.initialize(new Dimension(600,600), vertexLocations);
        vv =  new VisualizationViewer(layout, pr);
        vv.setBackground(Color.white);
        vv.setPickSupport(new ShapePickSupport());
        pr.setEdgeShapeFunction(new EdgeShape.QuadCurve());
        pr.setVertexStringer(new VertexStringer() {
            public String getLabel(ArchetypeVertex v) {
                return v.toString();
            }});
        vv.setToolTipFunction(new DefaultToolTipFunction());
        Container content = getContentPane();
        final GraphZoomScrollPane panel = new GraphZoomScrollPane(vv);
        content.add(panel);
        final EditingModalGraphMouse graphMouse = new EditingModalGraphMouse();
        
        // the EditingGraphMouse will pass mouse event coordinates to the
        // vertexLocations function to set the locations of the vertices as
        // they are created
        graphMouse.setVertexLocations(vertexLocations);
        vv.setGraphMouse(graphMouse);
        graphMouse.add(new EditingPopupGraphMousePlugin(vertexLocations));
        graphMouse.setMode(ModalGraphMouse.Mode.EDITING);
        
        final ScalingControl scaler = new CrossoverScalingControl();
        JButton plus = new JButton("+");
        plus.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                scaler.scale(vv, 1.1f, vv.getCenter());
            }
        });
        JButton minus = new JButton("-");
        minus.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                scaler.scale(vv, 1/1.1f, vv.getCenter());
            }
        });

        JPanel controls = new JPanel();
        controls.add(plus);
        controls.add(minus);
        JComboBox modeBox = graphMouse.getModeComboBox();
        controls.add(modeBox);
        content.add(controls, BorderLayout.SOUTH);
    }
    
    public void maj() {
       // ... ?
   
    }
    
    public void dragGestureRecognized(DragGestureEvent e) {

    }
    
    public void dragDropEnd(DragSourceDropEvent e) {
    }
    
    public void dragExit(DragSourceEvent e) {
    }
    
    public void dropActionChanged(DragSourceDragEvent e) {
    }
    
    public void dragOver(DragSourceDragEvent e) {
    }
    
    public void dragEnter(DragSourceDragEvent e) {
    }
    
    public void drop(DropTargetDropEvent e) {
        if (e.isDataFlavorSupported(Materiel.materielDataFlavor)) {
            e.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
        }
        else {
            e.rejectDrop();
            return;
        }
    }
    
    public void dragExit(DropTargetEvent e) {
    }
    
    public void dropActionChanged(DropTargetDragEvent e) {
    }
    
    public void dragOver(DropTargetDragEvent e) {
    }
    
    public void dragEnter(DropTargetDragEvent e) {
        
    }
    
    public static Tableau getInstance() {
        if (tableau == null)
            tableau = new Tableau();
        return tableau;
    }
}
</i>


______________________________________________________________________
You are receiving this email because you elected to monitor this forum.
To stop monitoring this forum, login to SourceForge.net and visit: 
https://sourceforge.net/forum/unmonitor.php?forum_id=252062