KeyEvent locking up with mouse press?

OpenGL Development JOGL Development
#1

I am new to JOGL and trying to learn how it all works. I am making decent progress, but I’m having an issue with mouse clicks stopping my KeyEvents from firing off at all. I’m not entirely sure it is a JOGL issue, but similar code was working fine before I converted from Java2D to JOGL. Does the Canvas or FPSAnimator require a different type of event handling for key and mouse presses? Any help would be appreciated.

Here’s the code:

import java.awt.*;
import java.awt.event.*;

import javax.media.opengl.*;
import javax.media.opengl.glu.*;

import com.sun.opengl.util.FPSAnimator;

public class GameEngine extends Frame implements GLEventListener, KeyListener
  {
  private final GLCanvas canvas = new GLCanvas();
  private final GLU glu = new GLU();
  private FPSAnimator animator = new FPSAnimator(canvas, 60, true);
//  private Map gameMap = new Map();

  public GameEngine(String title, int width, int height)
    {
    canvas.addGLEventListener(this);
    add(canvas);
    this.setResizable(false);
    this.setUndecorated(true);
    this.setIgnoreRepaint(true);
    this.setFocusable(true);
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();
    gd.setFullScreenWindow(this);
    
    animator.start();

    addWindowListener(new WindowAdapter()
      {
        public void windowClosing(WindowEvent e)
          {
          new Thread(new Runnable()
            {
              public void run()
                {
                animator.stop();
                System.exit(0);
                }
            }).start();
          }
      });
    this.addKeyListener(this);
//    this.addMouseListener(this);
    setVisible(true);
    }

  public void display(GLAutoDrawable drawable)
    {
    final GL gl = drawable.getGL();

    gl.glMatrixMode(GL.GL_MODELVIEW);
    gl.glLoadIdentity();
    gl.glClear(GL.GL_COLOR_BUFFER_BIT);

    
    //gameMap.draw(0, 0, gl);    
    }

  public void init(GLAutoDrawable drawable)
    {
    final GL gl = drawable.getGL();

    gl.setSwapInterval(1);

    gl.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
    gl.glColor3f(0.0f, 0.0f, 0.0f);
    gl.glPointSize(1.0f);

    gl.glMatrixMode(GL.GL_PROJECTION);
    gl.glLoadIdentity();
    glu.gluOrtho2D(0.0, getWidth(), 0.0, getHeight());
    }


  public void displayChanged(GLAutoDrawable arg0, boolean arg1, boolean arg2)
    {
    }

  public void reshape(GLAutoDrawable drawable, int i, int x, int width,
      int height)
    {
    }
  
  public void mousePressed(MouseEvent e)
    {
    }
  public void mouseClicked(MouseEvent e)
    {
    }
  public void mouseEntered(MouseEvent e)
    {
    }
  public void mouseExited(MouseEvent e)
    {
    }
  public void mouseReleased(MouseEvent e)
    {
    }
  public void keyPressed(KeyEvent e)
    {
    int keyCode = e.getKeyCode();
    if ((keyCode == KeyEvent.VK_ESCAPE) || (keyCode == KeyEvent.VK_Q)
        || (keyCode == KeyEvent.VK_END)
        || ((keyCode == KeyEvent.VK_C) && e.isControlDown()))
      {
      animator.stop();
      System.exit(0);

      // setRunning(false);
      }
    }
  public void keyReleased(KeyEvent e)
    {
    }
  public void keyTyped(KeyEvent e)
    {
    }  
  }

KeyEvents work normally and quit the program unless you click the mouse at all before pressing one of the quit combos.

#2

You are probably facing a focus issue here, because your canvas gains focus when you click, so your frame gets unfocused and won’t get keyevents anymore. Try setting canvas.setFocusable(false).

#3

That fixed it. Thank you very much!

#4

Ok, now I am trying to add my mouse events and they aren’t working. I implemented MouseListener and added one to my frame just like the KeyListener. I already had the required methods overloaded. I put test code in each method to see if they work and none of them are detecting clicks. Is my canvas getting in the way again? Should I add the key and mouse listeners to the canvas instead? What is the standard here?