1 /*
   2  * Copyright (c) 2007, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.awt.image;
  27 
  28 import java.awt.GraphicsConfiguration;
  29 import java.awt.GraphicsEnvironment;
  30 import java.awt.ImageCapabilities;
  31 import java.awt.image.BufferedImage;
  32 import sun.java2d.SurfaceData;
  33 import sun.java2d.loops.CompositeType;
  34 
  35 /**
  36  * This SurfaceManager variant manages the default (software) surface of a
  37  * BufferedImage.
  38  * All rendering to the image will use the software surface as the destination.
  39  * This is one of the more minimalist implementations of SurfaceManager.
  40  */
  41 public class BufImgSurfaceManager extends SurfaceManager {
  42     /**
  43      * A reference to the BufferedImage whose contents are being managed.
  44      */
  45     protected BufferedImage bImg;
  46 
  47     /**
  48      * The default (software) surface containing the contents of the
  49      * BufferedImage.
  50      */
  51     protected SurfaceData sdDefault;
  52 
  53     public BufImgSurfaceManager(BufferedImage bImg) {
  54         this.bImg = bImg;
  55         this.sdDefault = BufImgSurfaceData.createData(bImg);
  56     }
  57 
  58     public SurfaceData getPrimarySurfaceData() {
  59         return sdDefault;
  60     }
  61 
  62     /**
  63      * Called from platform-specific SurfaceData objects to attempt to
  64      * auto-restore the contents of an accelerated surface that has been lost.
  65      */
  66     public SurfaceData restoreContents() {
  67         return sdDefault;
  68     }
  69 }