1 /*

     2  * Copyright 2000-2005 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.GraphicsConfiguration;

    29 import java.awt.Image;

    30 import java.awt.Transparency;

    31 import java.awt.image.ColorModel;

    32 import sun.awt.Win32GraphicsDevice;

    33 import sun.java2d.loops.SurfaceType;

    34 

    35 public class WinBackBufferSurfaceData extends Win32OffScreenSurfaceData {

    36 

    37     private Win32SurfaceData parentData;

    38 

    39     /**

    40      * Private constructor.  Use createData() to create an object.

    41      */

    42     private WinBackBufferSurfaceData(int width, int height,

    43                                      SurfaceType sType, ColorModel cm,

    44                                      GraphicsConfiguration gc,

    45                                      Image image, int screen,

    46                                      Win32SurfaceData parentData)

    47     {

    48         super(width, height, sType, cm, gc, image, Transparency.OPAQUE);

    49         this.parentData = parentData;

    50         initSurface(cm.getPixelSize(), width, height, screen, parentData);

    51     }

    52 

    53     private native void initSurface(int depth, int width, int height,

    54                                     int screen, Win32SurfaceData parentData);

    55 

    56     public void restoreSurface() {

    57         parentData.restoreSurface();

    58     }

    59 

    60     public static WinBackBufferSurfaceData

    61         createData(int width, int height,

    62                    ColorModel cm, GraphicsConfiguration gc, Image image,

    63                    Win32SurfaceData parentData)

    64     {

    65         Win32GraphicsDevice gd = (Win32GraphicsDevice)gc.getDevice();

    66         SurfaceType sType = getSurfaceType(cm, Transparency.OPAQUE);

    67         return new WinBackBufferSurfaceData(width, height, sType,

    68                                             cm, gc, image,

    69                                             gd.getScreen(), parentData);

    70     }

    71 }