Button Press, Registered twice

Troubleshooting gui
1

Hi



I am comign across a strange problem, everytime i press a button, the event handler is called twice.



        KeyInput.get().addListener( new KeyInputListener() {
            public void onKey( char character, int keyCode, boolean pressed ) {
               
               if(character == 'v' && !pressed){
                  
                  renderer.switchVertexDisplay();
                  keyChange =true;
               }
               
                System.out.println( "key: '" + (character != 0 ? ""+character : "\0") + "' (code "+keyCode+") " + (pressed?"pressed":"released") );
            }
        } );




    public void simpleUpdate() {
        InputSystem.update();
        input.update(tpf);
        mouseView.update(tpf);
       
        if(keyChange){
           renderObjects();
           keyChange = false;
        }

            if ( KeyBindingManager.getKeyBindingManager().isValidCommand("toggle_pause", false ) ) {
                System.out.println("P");
            }
    }



In my code, everytime V is pressed, i set a global boolean so my renderer knows when to repopulate the graphics nodes (In this case its calls a function to switch Vertex on or off, depending on previous state). But everytime i press the key, the input listener is called twice, i Can see the vertex removed and than redraw again.

Any suggestions ?

Thanks, Dave
2

It should be called twice, once for pressing the ke, once for releasing. But it seems you noticed that. Did you probably register that listener more than once?

3

Hi



The strange thing is that for both response, my System.out.println say they're both releases and I can't find any record of press.



I am using SimpleCanvasImpl btw and to register the initial listeners I am using




   protected Canvas getGlCanvas() {
        if (glCanvas == null) {


           DisplaySystem display = DisplaySystem.getDisplaySystem("LWJGL");
            glCanvas = display.createCanvas(width, height);
 
          
            // add a listener... if window is resized, we can do something about it.
            glCanvas.addComponentListener(new ComponentAdapter() {
                public void componentResized(ComponentEvent ce) {
                    doResize();
                }
            });
           
            if(model == null)
               return null;
           
            input = new InputHandler();

           
            glCanvas.addFocusListener(new FocusListener() {

                public void focusGained(FocusEvent arg0) {
                    ((AWTKeyInput) KeyInput.get()).setEnabled(true);
                    ((AWTMouseInput) MouseInput.get()).setEnabled(true);
                }

                public void focusLost(FocusEvent arg0) {
                    ((AWTKeyInput) KeyInput.get()).setEnabled(false);
                    ((AWTMouseInput) MouseInput.get()).setEnabled(false);
                }


            });

            ((JMECanvas) glCanvas).setUpdateInput(true);

            KeyInput.setProvider( InputSystem.INPUT_SYSTEM_AWT );
            ((AWTKeyInput) KeyInput.get()).setEnabled(false);
            KeyListener kl = (KeyListener) KeyInput.get();

            glCanvas.addKeyListener(kl);

           
           
            MouseInput.setProvider( InputSystem.INPUT_SYSTEM_AWT );
            ((AWTMouseInput) MouseInput.get()).setEnabled(false);
            ((AWTMouseInput) MouseInput.get()).setRelativeDelta(glCanvas);
            glCanvas.addMouseListener((MouseListener) MouseInput.get());
            glCanvas.addMouseWheelListener((MouseWheelListener) MouseInput.get());
            glCanvas.addMouseMotionListener((MouseMotionListener) MouseInput.get());
           
          
            Vector3f up = new Vector3f(0.0f, 0.0f, 1.0f);
           
            impl = new GeometryEngine(model, width, height,glCanvas);
           
           
            JMECanvas jmeCanvas = ( (JMECanvas) glCanvas );
            jmeCanvas.setImplementor(impl);
            jmeCanvas.setUpdateInput( true );
   
           
            //

END OF GL STUFF
        }
        return glCanvas;
    }

4

Ah, then AWTKeyInput can be the problem… lets have a look:

boolean pressed = ( e.getModifiers() & KeyEvent.KEY_PRESSED ) == 1


This will never be true!

Must be

boolean pressed = e.getID() == KeyEvent.KEY_PRESSED;



Fixed in CVS. Please check if this fixes your problem.
5

Hi



Yep, that worked beautifully.



Thanks for the help  :smiley: