0N/A/*
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0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
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0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
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0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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0N/A */
0N/A
0N/Apackage sun.awt.image;
0N/A
0N/Aimport sun.java2d.SurfaceData;
0N/A
0N/A/**
0N/A * This SurfaceManager variant manages an unaccelerated volatile surface.
0N/A * This class is created in the event that someone requested a VolatileImage
0N/A * to be created from a BufferedImageGraphicsConfig, which is not platform-
0N/A * or hardware-based, thus the resulting surface and surface manager
0N/A * are unaccelerated. All we do in this class is implement the abstract
0N/A * methods of VolatileSurfaceManager to return values that indicate that
0N/A * we cannot accelerate surfaces through this SurfaceManager, thus the
0N/A * parent class will handle things through the unaccelerated backup mechanism.
0N/A */
0N/Apublic class BufImgVolatileSurfaceManager extends VolatileSurfaceManager {
0N/A
0N/A /**
0N/A * This constructor simply defers to the superclass since all of the real
0N/A * functionality of this class is implemented in VolatileSurfaceManager.
0N/A */
0N/A public BufImgVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
0N/A super(vImg, context);
0N/A }
0N/A
0N/A /**
0N/A * Returns false to indicate that this surface manager cannot accelerate
0N/A * the image.
0N/A */
0N/A protected boolean isAccelerationEnabled() {
0N/A return false;
0N/A }
0N/A
0N/A /**
0N/A * Returns null to indicate failure in creating the accelerated surface.
0N/A * Note that this method should not ever be called since creation of
0N/A * accelerated surfaces should be preceded by calls to the above
0N/A * isAccelerationEnabled() method. But we need to override this method
0N/A * since it is abstract in our parent class.
0N/A */
0N/A protected SurfaceData initAcceleratedSurface() {
0N/A return null;
0N/A }
0N/A}