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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
* 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 javax.media.opengl;
import java.lang.reflect.*;
import java.security.*;
import com.sun.opengl.impl.*;
public class NativeWindowFactory {
private static Constructor awtFactory = null;
/** Initializes the sole NativeWindowFactory instance . */
private static void initializeAWTFactory() throws GLException {
if (awtFactory == null) {
// Use the desktop OpenGL as the fallback always
try {
String osName = System.getProperty("os.name");
String osNameLowerCase = osName.toLowerCase();
String factoryClassName = null;
// Because there are some complications with generating all
// platforms' Java glue code on all platforms (among them that we
// would have to include jawt.h and jawt_md.h in the jogl
// sources, which we currently don't have to do) we break the only
// static dependencies with platform-specific code here using reflection.
if (osNameLowerCase.startsWith("wind")) {
factoryClassName = "com.sun.opengl.impl.jawt.windows.WindowsJAWTWindow";
} else if (osNameLowerCase.startsWith("mac os x")) {
factoryClassName = "com.sun.opengl.impl.jawt.macosx.MacOSXJAWTWindow";
} else {
// Assume Linux, Solaris, etc. Should probably test for these explicitly.
factoryClassName = "com.sun.opengl.impl.jawt.x11.X11JAWTWindow";
}
if (factoryClassName == null) {
throw new GLException("OS " + osName + " not yet supported");
}
awtFactory = GLReflection.getConstructor(factoryClassName, new Class[] { Object.class });
} catch (Exception e) {
throw new GLException(e);
}
}
}
/**
* Returns true, if the given object is an instance of java.awt.Component.
* This check is performed on a Class.getName() basis,
* hence the independency to the java.awt.* package.
*/
public static boolean isAWTComponent(Object target) {
return GLReflection.instanceOf(target, "java.awt.Component");
}
/**
* Returns a NativeWindow.
*
* @throws IllegalArgumentException if the passed target is null
* @throws GLException if any window system-specific errors caused
* the creation of the GLDrawable to fail.
*/
public static NativeWindow getNativeWindow(Object target)
throws IllegalArgumentException, GLException
{
if(null==target) {
throw new IllegalArgumentException("target is null");
}
if(target instanceof NativeWindow) {
return (NativeWindow)target;
}
if (isAWTComponent(target)) {
initializeAWTFactory();
if(awtFactory == null) {
throw new GLException("Could not determine an AWT-NativeWindow constructor");
}
try {
return (NativeWindow) awtFactory.newInstance(new Object[] { target });
} catch (Exception ie) {
ie.printStackTrace();
}
}
throw new IllegalArgumentException("Target type is unsupported. Currently supported: \n"+
"\tjavax.media.opengl.NativeWindow\n"+
"\tjava.awt.Component\n");
}
}
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