Embedding a Processing Application in a Swing GUI

Contributed Library Questions

miasma

Embedding a Processing Application in a Swing GUI

in Contributed Library Questions • 2 years ago

Hi,

I've got a view "Views", which extend JScrollPane. My Processing application does the same:

**
* <h1>SunburstView</h1>
* <p>Main sunburst class.</p>
*
* @author Johannes Lichtenberger, University of Konstanz
*
*/
public final class SunburstView extends JScrollPane implements IView {

    /** {@link SunburstGUI} which represents the GUI interface of the Sunburst view. */
    private SunburstGUI mGUI;

    /** {@link ViewNotifier} to notify views of changes. */
    private final ViewNotifier mNotifier;

    /** {@link ReadDB} instance to interact with Treetank. */
    private transient ReadDB mDB;

    /** Processing {@link PApplet} reference. */
    private transient PApplet mEmbed;

    /**
     * Constructor.
     *
     * @param paramNotifier
     *            {@link ViewNotifier} instance.
     */
    public SunburstView(final ViewNotifier paramNotifier) {
        mNotifier = paramNotifier;

        // Add view to notifier.
        mNotifier.add(this);
    }

    @Override
    public boolean isVisible() {
        return GUIProp.EShowViews.SHOWSUNBURST.getValue();
    }

    @Override
    public void refreshInit() {
        mDB = mNotifier.getGUI().getReadDB();
        mEmbed = new Embedded();
        setViewportView(mEmbed);
    }

    @Override
    public void refreshUpdate() {
        /*
         * Important to call this whenever embedding a PApplet.
         * It ensures that the animation thread is started and
         * that other internal variables are properly set.
         */
        mEmbed.init();
    }

    @Override
    public void dispose() { }

    /** Embedded processing view. */
    private final class Embedded extends PApplet {

        @Override
        public void setup() {
            final SunburstController<SunburstModel, SunburstGUI> controller =
                new SunburstController<SunburstModel, SunburstGUI>();
            mGUI = SunburstGUI.createGUI(this, controller);
            final SunburstModel model = new SunburstModel(this, mDB, controller);
            model.traverseTree();

            controller.addView(mGUI);
            controller.addModel(model);

            frame.setTitle("press 'o' to select an input folder!");

            mGUI.setupGUI();

            // Prevent thread from starving everything else.
            noLoop();
        }
        ...

I'm going to add it with:

        final SunburstView sunburstView = new SunburstView(mNotifier);
        sunburstView.setPreferredSize(new Dimension(WIDTH, HEIGHT));
        top.add(sunburstView, BorderLayout.CENTER);
        getContentPane().add(top);

whereas top is a simple JPane.

But my MenuBar, as I open a Menu with several menu items gets hidden behind the jscrollpane :-/

regards,
johannes

Replies(3)

PhiLho

Re: Embedding a Processing Application in a Swing GUI

2 years ago

Mmm, that's a quite specialized setting...
But I think you experiment a well known conflict between heavyweight components (AWT, PApplet is one of them I think) and lightweight ones (Swing, the menu).
I believe this problem have been resolved on the latest versions of Java, but you will have to search a bit the Net for a solution.

miasma

Re: Embedding a Processing Application in a Swing GUI

2 years ago

I think it boils down to Applet in a JScrollPane or JPane, but I've already read, that Applets are in the Foreground and do hide any other components :-/

So, I'm already thinking about porting the whole Processing application to pure Swing/Java2D :-/

miasma

Re: Embedding a Processing Application in a Swing GUI

2 years ago

I'm Using Java SE 6 update 22:

johannes@luna:~$ java -version
java version "1.6.0_22"
Java(TM) SE Runtime Environment (build 1.6.0_22-b04)
Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03, mixed mode)
johannes@luna:~$

Maybe I need the workaround meantioned in http://java.sun.com/developer/technicalArticles/GUI/mixing_components/index.html

Another thing now is that

        @Override
        public void draw() {
            mGUI.draw();
        }

throws a NullPointerException

but mGUI shouldn't be null... It seems setup() somehow isn't called, shouldn't it get called from embed.init()?

    @Override
    public void refreshInit() {
        mDB = mNotifier.getGUI().getReadDB();
        mEmbed = new Embedded();
        setViewportView(mEmbed);

        /*
         * Important to call this whenever embedding a PApplet.
         * It ensures that the animation thread is started and
         * that other internal variables are properly set.
         */
        mEmbed.init();
    }

    @Override
    public void refreshUpdate() {
        mEmbed.draw();
    }

Maybe mEmbed.draw() is called before the setup() method is going to be invoked, but that's strange since in the Eclipse Debugger I can spot that refreshInit() is called before refreshUpdate().

regards,
Johannes

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