1 /*

     2  * Copyright 2000-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.java2d.windows;

    27 

    28 import java.awt.Component;

    29 import java.awt.GraphicsConfiguration;

    30 import java.awt.ImageCapabilities;

    31 import java.awt.image.ColorModel;

    32 import java.awt.image.VolatileImage;

    33 import sun.awt.image.SurfaceManager;

    34 import sun.awt.image.SunVolatileImage;

    35 import sun.awt.image.VolatileSurfaceManager;

    36 import sun.java2d.SurfaceData;

    37 

    38 import sun.java2d.d3d.D3DBackBufferSurfaceData;

    39 

    40 public class WinBackBuffer extends SunVolatileImage {

    41 

    42     /**

    43      * Create an image for an attached surface

    44      */

    45     public WinBackBuffer(Component c, Win32SurfaceData parentData) {

    46         super(c, c.getWidth(), c.getHeight(), parentData);

    47     }

    48 

    49     @Override

    50     protected VolatileSurfaceManager createSurfaceManager(Object context,

    51                                                           ImageCapabilities caps)

    52     {

    53         return new WinBackBufferSurfaceManager(this, context);

    54     }

    55 

    56     public Win32OffScreenSurfaceData getHWSurfaceData() {

    57         SurfaceData sd = SurfaceData.getPrimarySurfaceData(this);

    58         return (sd instanceof Win32OffScreenSurfaceData) ?

    59             (Win32OffScreenSurfaceData)sd : null;

    60     }

    61 

    62     private class WinBackBufferSurfaceManager

    63         extends WinVolatileSurfaceManager

    64     {

    65         public WinBackBufferSurfaceManager(SunVolatileImage vImg,

    66                                            Object context)

    67         {

    68             super(vImg, context);

    69         }

    70 

    71         protected Win32OffScreenSurfaceData createAccelSurface() {

    72             GraphicsConfiguration gc = vImg.getGraphicsConfig();

    73             ColorModel cm = getDeviceColorModel();

    74             Win32SurfaceData parent = (Win32SurfaceData)context;

    75 

    76             Win32OffScreenSurfaceData ret =

    77                 D3DBackBufferSurfaceData.createData(vImg.getWidth(),

    78                                                     vImg.getHeight(),

    79                                                     cm, gc, vImg, parent);

    80             if (ret == null) {

    81                 ret = WinBackBufferSurfaceData.createData(vImg.getWidth(),

    82                                                           vImg.getHeight(),

    83                                                           cm, gc, vImg, parent);

    84             }

    85             return ret;

    86         }

    87 

    88         /**

    89          * Removes this surface manager from the display change listeners.

    90          * Since the user don't have access to the VolatileImage

    91          * representing the backbuffer, we know that nobody but us

    92          * can call it. And we do it when the backbuffer is replaced.

    93          */

    94         public void flush() {

    95             sun.awt.Win32GraphicsEnvironment ge =

    96                     (sun.awt.Win32GraphicsEnvironment)

    97                     java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment();

    98             ge.removeDisplayChangedListener(this);

    99         }

   100     }

   101 }