1 files changed, 386 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
new file mode 100644
index 000000000..4aae89bcf
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
@@ -0,0 +1,386 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2010 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:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.jogamp.opengl.impl;
+
+import java.util.*;
+import javax.media.opengl.*;
+
+/** Encapsulates the implementation of most of the GLAutoDrawable's
+    methods to be able to share it between GLCanvas and GLJPanel. */
+
+public class GLDrawableHelper {
+  protected static final boolean DEBUG = GLDrawableImpl.DEBUG;
+  private static final boolean VERBOSE = Debug.verbose();
+  private Object listenersLock = new Object();
+  private List listeners;
+  private volatile boolean listenersIter; // avoid java.util.ConcurrentModificationException
+  private Set listenersToBeInit;
+  private boolean autoSwapBufferMode;
+  private Object glRunnablesLock = new Object();
+  private ArrayList glRunnables;
+  private GLAnimatorControl animatorCtrl;
+
+  public GLDrawableHelper() {
+    reset();
+  }
+
+  public final void reset() {
+    synchronized(listenersLock) {
+        listeners = new ArrayList();
+        listenersIter = false;
+        listenersToBeInit = new HashSet();
+    }
+    autoSwapBufferMode = true;
+    synchronized(glRunnablesLock) {
+        glRunnables = new ArrayList();
+    }
+    animatorCtrl = null;
+  }
+
+  public final String toString() {
+    StringBuffer sb = new StringBuffer();
+    sb.append("GLAnimatorControl: "+animatorCtrl+", ");
+    synchronized(listenersLock) {
+        sb.append("GLEventListeners num "+listeners.size()+" [");
+        listenersIter = true;
+        for (int i=0; i < listeners.size(); i++) {
+          Object l = listeners.get(i);
+          sb.append(l);
+          sb.append("[init ");
+          sb.append( !listenersToBeInit.contains(l) );
+          sb.append("], ");
+        }
+        listenersIter = false;
+    }
+    sb.append("]");
+    return sb.toString();
+  }
+
+  public final void addGLEventListener(GLEventListener listener) {
+    addGLEventListener(-1, listener);
+  }
+
+  public final void addGLEventListener(int index, GLEventListener listener) {
+    synchronized(listenersLock) {
+        if(0>index) {
+            index = listeners.size();
+        }
+        // GLEventListener may be added after context is created,
+        // hence we earmark initialization for the next display call.
+        listenersToBeInit.add(listener);
+        if(!listenersIter) {
+            // fast path
+            listeners.add(index, listener);
+        } else {
+            // copy mode in case this is issued while iterating, eg via init, display, ..
+            List newListeners = (List) ((ArrayList) listeners).clone();
+            newListeners.add(index, listener);
+            listeners = newListeners;
+        }
+    }
+  }
+  
+  public final void removeGLEventListener(GLEventListener listener) {
+    synchronized(listenersLock) {
+        if(!listenersIter) {
+            // fast path
+            listeners.remove(listener);
+        } else {
+            // copy mode in case this is issued while iterating, eg via init, display, ..
+            List newListeners = (List) ((ArrayList) listeners).clone();
+            newListeners.remove(listener);
+            listeners = newListeners;
+        }
+        listenersToBeInit.remove(listener);
+    }
+  }
+
+  /**
+   * Issues {@link javax.media.opengl.GLEventListener#dispose(javax.media.opengl.GLAutoDrawable)}
+   * to all listeners.
+   * @param drawable
+   */
+  public final void dispose(GLAutoDrawable drawable) {
+    synchronized(listenersLock) {
+        listenersIter = true;
+        for (int i=0; i < listeners.size(); i++) {
+          GLEventListener listener = (GLEventListener) listeners.get(i) ;
+          listener.dispose(drawable);
+        }
+        listenersIter = false;
+    }
+  }
+
+  private final boolean init(GLEventListener l, GLAutoDrawable drawable, boolean sendReshape) {
+      if(listenersToBeInit.remove(l)) {
+          l.init(drawable);
+          if(sendReshape) {
+              reshape(l, drawable, 0, 0, drawable.getWidth(), drawable.getHeight(), true /* setViewport */);
+          }
+          return true;
+      }
+      return false;
+  }
+
+  public final void init(GLAutoDrawable drawable) {
+    synchronized(listenersLock) {
+        listenersIter = true;
+        for (int i=0; i < listeners.size(); i++) {
+          GLEventListener listener = (GLEventListener) listeners.get(i) ;
+
+          // If make current ctx, invoked by invokGL(..), results in a new ctx, init gets called.
+          // This may happen not just for initial setup, but for ctx recreation due to resource change (drawable/window),
+          // hence the must always be initialized unconditional.
+          listenersToBeInit.add(listener);
+
+          if ( ! init( listener, drawable, false ) ) {
+            throw new GLException("GLEventListener "+listener+" already initialized: "+drawable);
+          }
+        }
+        listenersIter = false;
+    }
+  }
+
+  public final void display(GLAutoDrawable drawable) {
+    synchronized(listenersLock) {
+        listenersIter = true;
+        for (int i=0; i < listeners.size(); i++) {
+          GLEventListener listener = (GLEventListener) listeners.get(i) ;
+          // GLEventListener may need to be init, 
+          // in case this one is added after the realization of the GLAutoDrawable
+          init( listener, drawable, true ) ; 
+          listener.display(drawable);
+        }
+        listenersIter = false;
+    }
+    execGLRunnables(drawable);
+  }
+
+  private final void reshape(GLEventListener listener, GLAutoDrawable drawable,
+                             int x, int y, int width, int height, boolean setViewport) {
+    if(setViewport) {
+        drawable.getGL().glViewport(x, y, width, height);
+    }
+    listener.reshape(drawable, x, y, width, height);
+  }
+
+  public final void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+    synchronized(listenersLock) {
+        listenersIter = true;
+        for (int i=0; i < listeners.size(); i++) {
+          reshape((GLEventListener) listeners.get(i), drawable, x, y, width, height, 0==i);
+        }
+        listenersIter = false;
+    }
+  }
+
+  private final void execGLRunnables(GLAutoDrawable drawable) {
+    if(glRunnables.size()>0) {
+        // swap one-shot list asap
+        ArrayList _glRunnables = null;
+        synchronized(glRunnablesLock) {
+            if(glRunnables.size()>0) {
+                _glRunnables = glRunnables;
+                glRunnables = new ArrayList();
+            }
+        }
+        if(null!=_glRunnables) {
+            for (int i=0; i < _glRunnables.size(); i++) {
+              ((GLRunnable) _glRunnables.get(i)).run(drawable);
+            }
+        }
+    }
+  }
+
+  public final void setAnimator(GLAnimatorControl animator) throws GLException {
+    synchronized(glRunnablesLock) {
+        if(animatorCtrl!=animator && null!=animator && null!=animatorCtrl) {
+            throw new GLException("Trying to register GLAnimatorControl "+animator+", where "+animatorCtrl+" is already registered. Unregister first.");
+        }
+        animatorCtrl = animator;
+    }
+  }
+
+  public final GLAnimatorControl getAnimator() {
+    synchronized(glRunnablesLock) {
+        return animatorCtrl;
+    }
+  }
+
+  public final boolean isExternalAnimatorRunning() {
+    return ( null != animatorCtrl ) ? animatorCtrl.isStarted() && animatorCtrl.getThread() != Thread.currentThread() : false ;
+  }
+
+  public final boolean isExternalAnimatorAnimating() {
+    return ( null != animatorCtrl ) ? animatorCtrl.isAnimating() && animatorCtrl.getThread() != Thread.currentThread() : false ;
+  }
+
+  public final void invoke(GLAutoDrawable drawable, boolean wait, GLRunnable glRunnable) {
+    if( null == drawable || null == glRunnable ) {
+        return;
+    }
+    Throwable throwable = null;
+    GLRunnableTask rTask = null;
+    Object rTaskLock = new Object();
+    synchronized(rTaskLock) {
+        boolean deferred;
+        synchronized(glRunnablesLock) {
+            deferred = isExternalAnimatorAnimating();
+            if(!deferred) {
+                wait = false; // don't wait if exec immediatly
+            }
+            rTask = new GLRunnableTask(glRunnable,
+                                       wait ? rTaskLock : null,
+                                       wait  /* catch Exceptions if waiting for result */);
+            glRunnables.add(rTask);
+        }
+        if( !deferred ) {
+            drawable.display();
+        } else if( wait ) {
+            try {
+                rTaskLock.wait(); // free lock, allow execution of rTask
+            } catch (InterruptedException ie) {
+                throwable = ie;
+            }
+            if(null==throwable) {
+                throwable = rTask.getThrowable();
+            }
+            if(null!=throwable) {
+                throw new RuntimeException(throwable);
+            }
+        }
+    }
+  }
+
+  public final void setAutoSwapBufferMode(boolean onOrOff) {
+    autoSwapBufferMode = onOrOff;
+  }
+
+  public final boolean getAutoSwapBufferMode() {
+    return autoSwapBufferMode;
+  }
+
+  private static final ThreadLocal perThreadInitAction = new ThreadLocal();
+
+  /** Principal helper method which runs a Runnable with the context
+      made current. This could have been made part of GLContext, but a
+      desired goal is to be able to implement GLAutoDrawable's in terms of
+      the GLContext's public APIs, and putting it into a separate
+      class helps ensure that we don't inadvertently use private
+      methods of the GLContext or its implementing classes.<br>
+   * <br>
+   * Remark: In case this method is called to dispose the GLDrawable/GLAutoDrawable,
+   * <code>initAction</code> shall be <code>null</code> to mark this cause.<br>
+   *
+   * @param drawable
+   * @param context
+   * @param runnable
+   * @param initAction
+   */
+  public final void invokeGL(GLDrawable drawable,
+                             GLContext context,
+                             Runnable  runnable,
+                             Runnable  initAction) {
+    if(null==context) {
+        if (DEBUG) {
+            Exception e = new GLException(Thread.currentThread().getName()+" Info: GLDrawableHelper " + this + ".invokeGL(): NULL GLContext");
+            e.printStackTrace();
+        }
+        return;
+    }
+
+    if(null==initAction) {
+        // disposal case
+        if(!context.isCreated()) {
+            throw new GLException(Thread.currentThread().getName()+" GLDrawableHelper " + this + ".invokeGL(): Dispose case (no init action given): Native context is not created: "+context);
+        }
+    }
+
+    // Support for recursive makeCurrent() calls as well as calling
+    // other drawables' display() methods from within another one's
+    GLContext lastContext    = GLContext.getCurrent();
+    Runnable  lastInitAction = (Runnable) perThreadInitAction.get();
+    if (lastContext != null) {
+      lastContext.release();
+    }
+  
+    int res = 0;
+    try {
+      res = context.makeCurrent();
+      if (res != GLContext.CONTEXT_NOT_CURRENT) {
+        if(null!=initAction) {
+            perThreadInitAction.set(initAction);
+            if (res == GLContext.CONTEXT_CURRENT_NEW) {
+              if (DEBUG) {
+                System.err.println("GLDrawableHelper " + this + ".invokeGL(): Running initAction");
+              }
+              initAction.run();
+            }
+        }
+        if(null!=runnable) {
+            if (DEBUG && VERBOSE) {
+              System.err.println("GLDrawableHelper " + this + ".invokeGL(): Running runnable");
+            }
+            runnable.run();
+            if (autoSwapBufferMode && null != initAction) {
+              if (drawable != null) {
+                drawable.swapBuffers();
+              }
+            }
+        }
+      }
+    } finally {
+      try {
+        if (res != GLContext.CONTEXT_NOT_CURRENT) {
+          context.release();
+        }
+      } catch (Exception e) {
+      }
+      if (lastContext != null) {
+        int res2 = lastContext.makeCurrent();
+        if (res2 == GLContext.CONTEXT_CURRENT_NEW) {
+          lastInitAction.run();
+        }
+      }
+    }
+  }
+
+}