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.geom.AffineTransform;
  32 import java.awt.image.BufferedImage;
  33 import sun.java2d.SurfaceData;
  34 import sun.java2d.loops.CompositeType;
  35 
  36 /**
  37  * This SurfaceManager variant manages the default (software) surface of a
  38  * BufferedImage.
  39  * All rendering to the image will use the software surface as the destination.
  40  * This is one of the more minimalist implementations of SurfaceManager.
  41  */
  42 public class BufImgSurfaceManager extends SurfaceManager {
  43     /**
  44      * A reference to the BufferedImage whose contents are being managed.
  45      */
  46     protected BufferedImage bImg;
  47 
  48     /**
  49      * The default (software) surface containing the contents of the
  50      * BufferedImage.
  51      */
  52     protected SurfaceData sdDefault;
  53 
  54     public BufImgSurfaceManager(BufferedImage bImg) {
  55         this.bImg = bImg;
  56         GraphicsConfiguration graphicsConfiguration = bImg.getGraphicsConfig();
  57         if (graphicsConfiguration != null) {
  58             this.sdDefault = BufImgSurfaceData.createData(bImg,
  59                     graphicsConfiguration.getDefaultTransform().getScaleX()
  60                     , graphicsConfiguration.getDefaultTransform().getScaleY());
  61         } else {
  62             this.sdDefault = BufImgSurfaceData.createData(bImg);
  63         }
  64     }
  65 
  66     public SurfaceData getPrimarySurfaceData() {
  67         return sdDefault;
  68     }
  69 
  70     /**
  71      * Called from platform-specific SurfaceData objects to attempt to
  72      * auto-restore the contents of an accelerated surface that has been lost.
  73      */
  74     public SurfaceData restoreContents() {
  75         return sdDefault;
  76     }
  77 }