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/*
* 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
* MIDROSYSTEMS, 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 net.java.games.jogl;
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import net.java.games.jogl.impl.*;
// FIXME: Subclasses need to call resetGLFunctionAvailability() on their
// context whenever the displayChanged() function is called on our
// GLEventListeners
/** A heavyweight AWT component which provides OpenGL rendering
support. This is the primary implementation of {@link GLDrawable};
{@link GLJPanel} is provided for compatibility with Swing user
interfaces when adding a heavyweight doesn't work either because
of Z-ordering or LayoutManager problems. This class can not be
instantiated directly; use {@link GLDrawableFactory} to construct
them. */
public final class GLCanvas extends Canvas implements GLDrawable {
private GLDrawableHelper drawableHelper = new GLDrawableHelper();
private GLContext context;
// FIXME: Temporary workaround for JAWT bug in Panther developer release.
// This workaround makes things quite a bit slower
private static final boolean isOSX = System.getProperty("os.name").equals("Mac OS X");
GLCanvas(GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GLDrawable shareWith) {
super();
context = GLContextFactory.getFactory().createGLContext(this, capabilities, chooser,
GLContextHelper.getContext(shareWith));
}
GLCanvas(GraphicsConfiguration config,
GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GLDrawable shareWith) {
super(config);
context = GLContextFactory.getFactory().createGLContext(this, capabilities, chooser,
GLContextHelper.getContext(shareWith));
}
public void display() {
if (isOSX) {
// Temporary workaround for JAWT bug in Panther developer release.
// All OpenGL rendering must occur on the AWT event thread.
repaint();
} else {
displayImpl();
}
}
/** Overridden from Canvas; calls {@link #display}. Should not be
invoked by applications directly. */
public void paint(Graphics g) {
if (isOSX) {
displayImpl();
} else {
if (!context.getNoAutoRedrawMode()) {
display();
}
}
}
/** Overridden from Canvas; causes {@link GLDrawableHelper#reshape}
to be called on all registered {@link GLEventListener}s. Called
automatically by the AWT; should not be invoked by applications
directly. */
public void reshape(int x, int y, int width, int height) {
super.reshape(x, y, width, height);
// Note: we ignore the given x and y within the parent component
// since we are drawing directly into this heavyweight component.
final int fx = 0;
final int fy = 0;
final int fwidth = width;
final int fheight = height;
context.invokeGL(new Runnable() {
public void run() {
getGL().glViewport(fx, fy, fwidth, fheight);
drawableHelper.reshape(GLCanvas.this, fx, fy, fwidth, fheight);
}
}, true, initAction);
}
/** Overridden from Canvas to prevent Java2D's clearing of the
canvas from interfering with the OpenGL rendering. */
public void update(Graphics g) {
paint(g);
}
public void addGLEventListener(GLEventListener listener) {
drawableHelper.addGLEventListener(listener);
}
public void removeGLEventListener(GLEventListener listener) {
drawableHelper.removeGLEventListener(listener);
}
public GL getGL() {
return context.getGL();
}
public void setGL(GL gl) {
context.setGL(gl);
}
public GLU getGLU() {
return context.getGLU();
}
public void setGLU(GLU glu) {
context.setGLU(glu);
}
void willSetRenderingThread() {
context.willSetRenderingThread();
}
public void setRenderingThread(Thread currentThreadOrNull) throws GLException {
context.setRenderingThread(currentThreadOrNull, initAction);
}
public Thread getRenderingThread() {
return context.getRenderingThread();
}
public void setNoAutoRedrawMode(boolean noAutoRedraw) {
context.setNoAutoRedrawMode(noAutoRedraw);
}
public boolean getNoAutoRedrawMode() {
return context.getNoAutoRedrawMode();
}
public boolean canCreateOffscreenDrawable() {
return context.canCreatePbufferContext();
}
public GLPbuffer createOffscreenDrawable(GLCapabilities capabilities,
int initialWidth,
int initialHeight) {
return new GLPbufferImpl(context.createPbufferContext(capabilities, initialWidth, initialHeight));
}
GLContext getContext() {
return context;
}
//----------------------------------------------------------------------
// Internals only below this point
//
private void displayImpl() {
context.invokeGL(displayAction, false, initAction);
}
class InitAction implements Runnable {
public void run() {
drawableHelper.init(GLCanvas.this);
}
}
private InitAction initAction = new InitAction();
class DisplayAction implements Runnable {
public void run() {
drawableHelper.display(GLCanvas.this);
}
}
private DisplayAction displayAction = new DisplayAction();
}
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