/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT OWNER OR
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*/
package org.lwjgl.opengl;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.Canvas;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import org.lwjgl.LWJGLException;
import org.lwjgl.LWJGLUtil;
/**
*
* @author elias_naur <elias_naur@users.sourceforge.net>
* @version $Revision: 3418 $
* $Id: LinuxCanvasImplementation.java 3418 2010-09-28 21:11:35Z spasi $
*/
final class LinuxCanvasImplementation implements AWTCanvasImplementation {
static int getScreenFromDevice(final GraphicsDevice device) throws LWJGLException {
try {
Method getScreen_method = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() {
public Method run() throws Exception {
return device.getClass().getMethod("getScreen");
}
});
Integer screen = (Integer)getScreen_method.invoke(device);
return screen;
} catch (Exception e) {
throw new LWJGLException(e);
}
}
private static int getVisualIDFromConfiguration(final GraphicsConfiguration configuration) throws LWJGLException {
try {
Method getVisual_method = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() {
public Method run() throws Exception {
return configuration.getClass().getMethod("getVisual");
}
});
Integer visual = (Integer)getVisual_method.invoke(configuration);
return visual;
} catch (Exception e) {
throw new LWJGLException(e);
}
}
public PeerInfo createPeerInfo(Canvas component, PixelFormat pixel_format) throws LWJGLException {
return new LinuxAWTGLCanvasPeerInfo(component);
}
/**
* Find a proper GraphicsConfiguration from the given GraphicsDevice and PixelFormat.
*
* @return The GraphicsConfiguration corresponding to a visual that matches the pixel format.
*/
public GraphicsConfiguration findConfiguration(GraphicsDevice device, PixelFormat pixel_format) throws LWJGLException {
try {
int screen = getScreenFromDevice(device);
int visual_id_matching_format = findVisualIDFromFormat(screen, pixel_format);
GraphicsConfiguration[] configurations = device.getConfigurations();
for ( GraphicsConfiguration configuration : configurations ) {
int visual_id = getVisualIDFromConfiguration(configuration);
if ( visual_id == visual_id_matching_format )
return configuration;
}
} catch (LWJGLException e) {
LWJGLUtil.log("Got exception while trying to determine configuration: " + e);
}
return null; // In case we failed to locate the visual, or if we're not on a SUN JDK
}
private static int findVisualIDFromFormat(int screen, PixelFormat pixel_format) throws LWJGLException {
try {
LinuxDisplay.lockAWT();
try {
GLContext.loadOpenGLLibrary();
try {
LinuxDisplay.incDisplay();
return nFindVisualIDFromFormat(LinuxDisplay.getDisplay(), screen, pixel_format);
} finally {
LinuxDisplay.decDisplay();
}
} finally {
GLContext.unloadOpenGLLibrary();
}
} finally {
LinuxDisplay.unlockAWT();
}
}
private static native int nFindVisualIDFromFormat(long display, int screen, PixelFormat pixel_format) throws LWJGLException;
}