Re: Trouble with MouseListeners

[guilhelm savin <guilhelm.savin AT gmail.com>]

Hi Éric,

Maybe you should have a look to this alternative MouseManager that handle mouse over/exited events on elements :

https://github.com/graphstream/gs-core/blob/master/src/org/graphstream/ui/view/util/MouseOverMouseManager.java

By the way, Viewer contains all views. You can retrieve a view you add in the viewer using Viewer#getView(viewId). But a "View" is a view of the whole graph, not of a single element. That is why there is usually only the default view.

Hope it helps...
Cheers

Le 4 mai 2016 4:01 PM, "Hargitt, Eric" <ehargitt AT srcinc.com> a écrit :

Hello everyone,

 

I read many things about how to attach a ViewerListener to a to the ViewerPipe, and was able to successfully retrieve button clicks. Here is that code:

 

public NetworkGraph()
{
    System.setProperty("gs.ui.renderer", "org.graphstream.ui.j2dviewer.J2DGraphRenderer");

    graph = new DefaultGraph(UUID.randomUUID().toString());
    graph.setStrict(false);

    String styleSheet = ""
            + "graph {padding: 125px;}"
            + "node {size: 250px, 50px, 0px; shape: rounded-box; text-alignment: center; text-size: 20; text-color: #78DE57;}"
            + "node.accessPoint {icon-mode: at-left; icon: url('./resources/access_point.png');}"
            + "edge {shape: line; size: 5; arrow-size: 30,10; fill-color: #55CBF2;}"
            + "";
    graph.addAttribute("ui.stylesheet", styleSheet);

    deviceMap = new HashMap<>();

    viewer = new Viewer(graph, Viewer.ThreadingModel.GRAPH_IN_GUI_THREAD);
    viewer.enableAutoLayout();

    mouseListener = new NetworkViewerListener(this);
    final ViewerPipe fromViewer = viewer.newViewerPipe();
    fromViewer.addViewerListener(mouseListener);
    fromViewer.addSink(graph);

    pumpTimer = new Timer();
    pumpTimer.scheduleAtFixedRate(new TimerTask()
    {
        @Override
        public void run()
        {
            fromViewer.pump();
        }
    }, 60, 60);

    graphView = viewer.addDefaultView(false);
}

 

My problem is that I want to act on mouseEntered and mouseExited events using a MouseInputAdapter. Currently my implementation of ViewerListener extends MouseInputAdapter. Here is the code where I try to add a MouseInputAdapter:

 

private void addComputerNode(NetworkDevice device)
{
    Node child = graph.addNode(device.getId());
    child.addAttribute("ui.label", device.getMacAddress());
    Node parent = graph.getNode(device.getParentId());
    graph.addEdge(UUID.randomUUID().toString(), parent, child);
    addListeners(child);
}

private void addListeners(final Node input)
{
    SwingUtilities.invokeLater(new Runnable()
    {
        @Override
        public void run()
        {
            View view = viewer.getView(input.getId());
            view.addMouseListener(mouseListener);
        }
    });
}

 

I expected to find the Views in the Viewer, but the Viewer only contains the DefaultView. By the time addListeners() gets called, there are already like 7 nodes and 6 edges attached to the graph. Am I doing something fundamentally wrong? All I want to do is add standard mouse listeners to my nodes. Thanks for your help on this.

 

Eric Hargitt