libjava/classpath/gnu/java/awt/peer/x/XImage.java

   1 /* XImage.java -- Image impl for X Pixmaps
   2    Copyright (C) 2006 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.java.awt.peer.x;
  40
  41 import gnu.x11.Pixmap;
  42 import gnu.x11.image.ZPixmap;
  43
  44 import java.awt.Graphics;
  45 import java.awt.GraphicsEnvironment;
  46 import java.awt.Image;
  47
  48 import java.awt.image.ColorModel;
  49 import java.awt.image.ImageConsumer;
  50 import java.awt.image.ImageObserver;
  51 import java.awt.image.ImageProducer;
  52
  53 import java.util.Hashtable;
  54 import java.util.Vector;
  55
  56 public class XImage
  57   extends Image
  58 {
  59
  60   Pixmap pixmap;
  61
  62   private Hashtable properties;
  63
  64   XImage(int w, int h)
  65   {
  66     GraphicsEnvironment env =
  67       GraphicsEnvironment.getLocalGraphicsEnvironment();
  68     XGraphicsDevice dev = (XGraphicsDevice) env.getDefaultScreenDevice();
  69     pixmap = new Pixmap(dev.getDisplay(), w, h);
  70   }
  71
  72   public int getWidth(ImageObserver observer)
  73   {
  74     return pixmap.width;
  75   }
  76
  77   public int getHeight(ImageObserver observer)
  78   {
  79     return pixmap.height;
  80   }
  81
  82   public ImageProducer getSource()
  83   {
  84     return new XImageProducer();
  85   }
  86
  87   /**
  88    * Creates an XGraphics for drawing on this XImage.
  89    *
  90    * @return an XGraphics for drawing on this XImage
  91    */
  92   public Graphics getGraphics()
  93   {
  94     XGraphics2D g = new XGraphics2D(pixmap);
  95     return g;
  96   }
  97
  98   public Object getProperty(String name, ImageObserver observer)
  99   {
 100     Object val = null;
 101     if (properties != null)
 102       val = properties.get(val);
 103     return val;
 104   }
 105
 106   public void flush()
 107   {
 108     // TODO: Implement this.
 109     throw new UnsupportedOperationException("Not yet implemented.");
 110   }
 111
 112   protected void finalize()
 113   {
 114     pixmap.free();
 115   }
 116
 117   protected class XImageProducer implements ImageProducer
 118   {
 119     private Vector<ImageConsumer> consumers = new Vector<ImageConsumer>();
 120
 121     public void addConsumer(ImageConsumer ic)
 122     {
 123       if (ic != null && !isConsumer(ic))
 124         this.consumers.add(ic);
 125     }
 126
 127     public boolean isConsumer(ImageConsumer ic)
 128     {
 129       return this.consumers.contains(ic);
 130     }
 131
 132     public void removeConsumer(ImageConsumer ic)
 133     {
 134       if (ic != null)
 135         this.consumers.remove(ic);
 136     }
 137
 138     public void requestTopDownLeftRightResend(ImageConsumer ic)
 139     {
 140       /* just ignore the call */
 141     }
 142
 143     public void startProduction(ImageConsumer ic)
 144     {
 145       this.addConsumer(ic);
 146
 147       for (ImageConsumer consumer : this.consumers)
 148         {
 149           int width = XImage.this.getWidth(null);
 150           int height = XImage.this.getHeight(null);
 151
 152           XGraphics2D graphics = (XGraphics2D) getGraphics();
 153           ColorModel model = graphics.getColorModel();
 154           graphics.dispose();
 155
 156           ZPixmap zpixmap = (ZPixmap)
 157             XImage.this.pixmap.image(0, 0, width, height,
 158                                      0xffffffff,
 159                                      gnu.x11.image.Image.Format.ZPIXMAP);
 160
 161           int size = zpixmap.get_data_length();
 162           System.out.println("size: " + size + ", w = " + width + ", h = " + height);
 163
 164           int [] pixel = new int[size];
 165           for (int i = 0; i < size; i++)
 166             pixel[i] = zpixmap.get_data_element(i);
 167
 168           consumer.setHints(ImageConsumer.SINGLEPASS);
 169
 170           consumer.setDimensions(width, height);
 171           consumer.setPixels(0, 0, width, height, model, pixel, 0, width);
 172           consumer.imageComplete(ImageConsumer.STATICIMAGEDONE);
 173         }
 174
 175       System.out.println("done!");
 176     }
 177   }
 178 }