/*
* Copyright 2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.java2d.xr;
import java.awt.GraphicsConfiguration;
import java.awt.ImageCapabilities;
import java.awt.image.ColorModel;
import sun.awt.image.SunVolatileImage;
import sun.awt.image.VolatileSurfaceManager;
import sun.java2d.SurfaceData;
/**
* XRender platform implementation of the VolatileSurfaceManager class.
*/
public class XRVolatileSurfaceManager extends VolatileSurfaceManager {
public XRVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
super(vImg, context);
}
protected boolean isAccelerationEnabled() {
return true;
}
/**
* Create a pixmap-based SurfaceData object
*/
protected SurfaceData initAcceleratedSurface() {
SurfaceData sData;
try {
XRGraphicsConfig gc = (XRGraphicsConfig) vImg.getGraphicsConfig();
ColorModel cm = gc.getColorModel();
long drawable = 0;
if (context instanceof Long) {
drawable = ((Long)context).longValue();
}
sData = XRSurfaceData.createData(gc,
vImg.getWidth(),
vImg.getHeight(),
cm, vImg, drawable,
vImg.getTransparency());
} catch (NullPointerException ex) {
sData = null;
} catch (OutOfMemoryError er) {
sData = null;
}
return sData;
}
/**
* XRender should allow copies between different formats and depths.
* TODO: verify that this assumption is correct.
*/
protected boolean isConfigValid(GraphicsConfiguration gc) {
return true;
}
/**
* Need to override the default behavior because Pixmaps-based
* images are accelerated but not volatile.
*/
@Override
public ImageCapabilities getCapabilities(GraphicsConfiguration gc) {
if (isConfigValid(gc) && isAccelerationEnabled()) {
return new ImageCapabilities(true);
}
return new ImageCapabilities(false);
}
}