/*
 * Copyright (c) 2003 Sun Microsystems, Inc. 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 jogamp.opengl.macosx.cgl;

import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.ProxySurface;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLException;

import jogamp.opengl.GLContextImpl;

public class MacOSXOnscreenCGLContext extends MacOSXCGLContext {

  public MacOSXOnscreenCGLContext(MacOSXOnscreenCGLDrawable drawable,
                                 GLContext shareWith) {
    super(drawable, shareWith);
  }

  @Override
  protected void makeCurrentImpl() throws GLException {
      super.makeCurrentImpl();
      drawableUpdatedNotify();
  }

  @Override
  protected void drawableUpdatedNotify() throws GLException {
    final int w = drawable.getWidth();
    final int h = drawable.getHeight();    
    final boolean updateContext = ( 0!=updateHandle && CGL.updateContextNeedsUpdate(updateHandle) ) ||
                                  w != lastWidth || h != lastHeight;
    if(updateContext) {
        lastWidth = w;
        lastHeight = h;
        if (contextHandle == 0) {
          throw new GLException("Context not created");
        }
        CGL.updateContext(contextHandle);
    }
  }

  @Override
  protected boolean createImpl(GLContextImpl sharedWith) {
    boolean res = super.createImpl(sharedWith);
    lastWidth = -1;
    lastHeight = -1;
    if(res && isNSContext()) {
        if(0 != updateHandle) {
            throw new InternalError("XXX1");
        }
        final boolean incompleteView;
        final NativeSurface surface = drawable.getNativeSurface();
        if( surface instanceof ProxySurface ) {
          incompleteView = ((ProxySurface)surface).containsUpstreamOptionBits( ProxySurface.OPT_UPSTREAM_WINDOW_INVISIBLE );
        } else {
          incompleteView = false;
        }
        if(!incompleteView) {        
            updateHandle = CGL.updateContextRegister(contextHandle, drawable.getHandle());
            if(0 == updateHandle) {
                throw new InternalError("XXX2");
            }
        }
    }
    return res;
  }

  @Override
  protected void destroyImpl() throws GLException {
    if ( 0 != updateHandle ) {
        CGL.updateContextUnregister(updateHandle);
        updateHandle = 0;
    }
    super.destroyImpl();
  }

  private long updateHandle = 0;
  private int lastWidth, lastHeight;
}