1 /*
   2  * Copyright (c) 2010, 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.java2d.xr;
  27 
  28 import java.awt.Color;
  29 import java.awt.Transparency;
  30 import sun.java2d.SurfaceData;
  31 import sun.java2d.SurfaceDataProxy;
  32 import sun.java2d.loops.CompositeType;
  33 
  34 /**
  35  * The proxy class contains the logic if to replace a SurfaceData with a
  36  * cached X11 Pixmap and the code to create the accelerated surfaces.
  37  */
  38 public class XRSurfaceDataProxy extends SurfaceDataProxy implements Transparency {
  39 
  40     public static SurfaceDataProxy createProxy(SurfaceData srcData,
  41             XRGraphicsConfig dstConfig) {
  42 
  43         /*Don't cache already native surfaces*/
  44         if (srcData instanceof XRSurfaceData) {
  45             return UNCACHED;
  46         }
  47 
  48         return new XRSurfaceDataProxy(dstConfig, srcData.getTransparency());
  49     }
  50 
  51     XRGraphicsConfig xrgc;
  52     int transparency;
  53 
  54     public XRSurfaceDataProxy(XRGraphicsConfig x11gc) {
  55         this.xrgc = x11gc;
  56     }
  57 
  58     @Override
  59     public SurfaceData validateSurfaceData(SurfaceData srcData,
  60             SurfaceData cachedData, int w, int h) {
  61         if (cachedData == null) {
  62             cachedData = XRSurfaceData.createData(xrgc, w, h, xrgc
  63                     .getColorModel(), null, 0, getTransparency());
  64         }
  65         return cachedData;
  66     }
  67 
  68     public XRSurfaceDataProxy(XRGraphicsConfig x11gc, int transparency) {
  69         this.xrgc = x11gc;
  70         this.transparency = transparency;
  71     }
  72 
  73     //TODO: Is that really ok?
  74     @Override
  75     public boolean isSupportedOperation(SurfaceData srcData, int txtype,
  76             CompositeType comp, Color bgColor) {
  77         return (bgColor == null || transparency == Transparency.TRANSLUCENT);
  78     }
  79 
  80     public int getTransparency() {
  81         return transparency;
  82     }
  83 }