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Java™ Binding for the OpenGL® API
/**
* Copyright 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.newt.awt.applet;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.media.nativewindow.NativeWindow;
import javax.media.nativewindow.WindowClosingProtocol.WindowClosingMode;
import javax.media.opengl.FPSCounter;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLPipelineFactory;
import jogamp.newt.Debug;
import com.jogamp.newt.event.KeyEvent;
import com.jogamp.newt.event.KeyListener;
import com.jogamp.newt.event.MouseListener;
import com.jogamp.newt.event.WindowAdapter;
import com.jogamp.newt.event.WindowEvent;
import com.jogamp.newt.event.WindowListener;
import com.jogamp.newt.opengl.GLWindow;
import com.jogamp.opengl.util.Animator;
/** Shows how to deploy an applet using JOGL. This demo must be
referenced from a web page via an <applet> tag. */
public class JOGLNewtAppletBase implements KeyListener, GLEventListener {
public static final boolean DEBUG = Debug.debug("Applet");
String glEventListenerClazzName;
int glSwapInterval;
boolean noDefaultKeyListener;
boolean glClosable;
boolean glDebug;
boolean glTrace;
GLEventListener glEventListener = null;
GLWindow glWindow = null;
Animator glAnimator=null;
boolean isValid = false;
NativeWindow awtParent;
public JOGLNewtAppletBase(String glEventListenerClazzName,
int glSwapInterval,
boolean noDefaultKeyListener,
boolean glClosable,
boolean glDebug,
boolean glTrace) {
this.glEventListenerClazzName=glEventListenerClazzName;
this.glSwapInterval=glSwapInterval;
this.noDefaultKeyListener = noDefaultKeyListener;
this.glClosable = glClosable;
this.glDebug = glDebug;
this.glTrace = glTrace;
}
public GLEventListener getGLEventListener() { return glEventListener; }
public GLWindow getGLWindow() { return glWindow; }
public Animator getGLAnimator() { return glAnimator; }
public boolean isValid() { return isValid; }
public static boolean str2Bool(String str, boolean def) {
if(null==str) return def;
try {
return Boolean.valueOf(str).booleanValue();
} catch (Exception ex) { ex.printStackTrace(); }
return def;
}
public static int str2Int(String str, int def) {
if(null==str) return def;
try {
return Integer.parseInt(str);
} catch (Exception ex) { ex.printStackTrace(); }
return def;
}
public static GLEventListener createInstance(final String clazzName) {
Object instance = null;
try {
final Class clazz = AccessController.doPrivileged(new PrivilegedAction>() {
public Class run() {
final ClassLoader cl = Thread.currentThread().getContextClassLoader();
Class clazz = null;
try {
clazz = Class.forName(clazzName, false, cl);
} catch (Throwable t) {
t.printStackTrace();
}
return clazz;
}
});
instance = clazz.newInstance();
} catch (Throwable t) {
t.printStackTrace();
throw new RuntimeException("Error while instantiating demo: "+clazzName);
}
if( null == instance ) {
throw new RuntimeException("Null GLEventListener: "+clazzName);
}
if( !(instance instanceof GLEventListener) ) {
throw new RuntimeException("Not a GLEventListener: "+clazzName);
}
return (GLEventListener) instance;
}
public static boolean setField(Object instance, String fieldName, Object value) {
try {
Field f = instance.getClass().getField(fieldName);
if(f.getType().isInstance(value)) {
f.set(instance, value);
return true;
} else {
System.out.println(instance.getClass()+" '"+fieldName+"' field not assignable with "+value.getClass()+", it's a: "+f.getType());
}
} catch (NoSuchFieldException nsfe) {
System.out.println(instance.getClass()+" has no '"+fieldName+"' field");
} catch (Throwable t) {
t.printStackTrace();
}
return false;
}
public void init(GLWindow glWindow) {
init(Thread.currentThread().getThreadGroup(), glWindow);
}
public void init(ThreadGroup tg, final GLWindow glWindow) {
isValid = false;
this.glWindow = glWindow;
this.glWindow.addWindowListener(new WindowAdapter() {
// Closing action: back to parent!
@Override
public void windowDestroyNotify(WindowEvent e) {
if( isValid() && WindowClosingMode.DO_NOTHING_ON_CLOSE == glWindow.getDefaultCloseOperation() ) {
if(null == glWindow.getParent()) {
// we may be called directly by the native EDT
new Thread(new Runnable() {
public void run() {
if( glWindow.isNativeValid() ) {
glWindow.reparentWindow(awtParent);
}
}
}).start();
}
}
} } );
glEventListener = createInstance(glEventListenerClazzName);
if(null == glEventListener) {
return;
}
try {
if(!setField(glEventListener, "window", glWindow)) {
setField(glEventListener, "glWindow", glWindow);
}
glWindow.addGLEventListener(this);
glWindow.addGLEventListener(glEventListener);
if(glEventListener instanceof WindowListener) {
glWindow.addWindowListener((WindowListener)glEventListener);
}
if(glEventListener instanceof MouseListener) {
glWindow.addMouseListener((MouseListener)glEventListener);
}
if(glEventListener instanceof KeyListener) {
glWindow.addKeyListener((KeyListener)glEventListener);
}
if(!noDefaultKeyListener) {
glWindow.addKeyListener(this);
}
glWindow.setUpdateFPSFrames(FPSCounter.DEFAULT_FRAMES_PER_INTERVAL, System.err);
// glAnimator = new FPSAnimator(canvas, 60);
glAnimator = new Animator();
glAnimator.setModeBits(false, Animator.MODE_EXPECT_AWT_RENDERING_THREAD); // No AWT thread involved!
glAnimator.setThreadGroup(tg);
glAnimator.add(glWindow);
glAnimator.setUpdateFPSFrames(FPSCounter.DEFAULT_FRAMES_PER_INTERVAL, null);
} catch (Throwable t) {
throw new RuntimeException(t);
}
isValid = true;
}
public void start() {
if(isValid) {
glWindow.setVisible(true);
glWindow.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED);
glAnimator.start();
awtParent = glWindow.getParent();
}
}
public void stop() {
if(null!=glAnimator) {
glAnimator.stop();
glWindow.setVisible(false);
}
}
public void destroy() {
isValid = false;
if(null!=glAnimator) {
glAnimator.stop();
glAnimator.remove(glWindow);
glAnimator=null;
}
if(null!=glWindow) {
glWindow.destroy();
glWindow=null;
}
}
// ***********************************************************************************
// ***********************************************************************************
// ***********************************************************************************
public void init(GLAutoDrawable drawable) {
GL _gl = drawable.getGL();
if(glDebug) {
try {
_gl = _gl.getContext().setGL( GLPipelineFactory.create("javax.media.opengl.Debug", null, _gl, null) );
} catch (Exception e) {e.printStackTrace();}
}
if(glTrace) {
try {
// Trace ..
_gl = _gl.getContext().setGL( GLPipelineFactory.create("javax.media.opengl.Trace", null, _gl, new Object[] { System.err } ) );
} catch (Exception e) {e.printStackTrace();}
}
if(glSwapInterval>=0) {
_gl.setSwapInterval(glSwapInterval);
}
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
}
public void display(GLAutoDrawable drawable) {
}
public void dispose(GLAutoDrawable drawable) {
}
// ***********************************************************************************
// ***********************************************************************************
// ***********************************************************************************
@Override
public void keyPressed(KeyEvent e) {
if( !e.isPrintableKey() || e.isAutoRepeat() ) {
return;
}
if(e.getKeyChar()=='d') {
glWindow.setUndecorated(!glWindow.isUndecorated());
} if(e.getKeyChar()=='f') {
glWindow.setFullscreen(!glWindow.isFullscreen());
} else if(e.getKeyChar()=='a') {
glWindow.setAlwaysOnTop(!glWindow.isAlwaysOnTop());
} else if(e.getKeyChar()=='r' && null!=awtParent) {
if(null == glWindow.getParent()) {
glWindow.reparentWindow(awtParent);
} else {
glWindow.reparentWindow(null);
glWindow.setDefaultCloseOperation( glClosable ? WindowClosingMode.DISPOSE_ON_CLOSE : WindowClosingMode.DO_NOTHING_ON_CLOSE );
}
}
}
@Override
public void keyReleased(KeyEvent e) {
}
}