Source for gnu.java.awt.peer.x.XImage

   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: 
  43: import java.awt.Graphics;
  44: import java.awt.GraphicsEnvironment;
  45: import java.awt.Image;
  46: import java.awt.image.ImageObserver;
  47: import java.awt.image.ImageProducer;
  48: import java.util.Hashtable;
  49: 
  50: public class XImage
  51:   extends Image
  52: {
  53: 
  54:   Pixmap pixmap;
  55: 
  56:   private Hashtable properties;
  57: 
  58:   XImage(int w, int h)
  59:   {
  60:     GraphicsEnvironment env =
  61:       GraphicsEnvironment.getLocalGraphicsEnvironment();
  62:     XGraphicsDevice dev = (XGraphicsDevice) env.getDefaultScreenDevice();
  63:     pixmap = new Pixmap(dev.getDisplay(), w, h);
  64:   }
  65: 
  66:   public int getWidth(ImageObserver observer)
  67:   {
  68:     return pixmap.width;
  69:   }
  70: 
  71:   public int getHeight(ImageObserver observer)
  72:   {
  73:     return pixmap.height;
  74:   }
  75: 
  76:   public ImageProducer getSource()
  77:   {
  78:     // TODO: Implement this.
  79:     throw new UnsupportedOperationException("Not yet implemented.");
  80:   }
  81: 
  82:   /**
  83:    * Creates an XGraphics for drawing on this XImage.
  84:    *
  85:    * @return an XGraphics for drawing on this XImage
  86:    */
  87:   public Graphics getGraphics()
  88:   {
  89:     XGraphics2D g = new XGraphics2D(pixmap);
  90:     return g;
  91:   }
  92: 
  93:   public Object getProperty(String name, ImageObserver observer)
  94:   {
  95:     Object val = null;
  96:     if (properties != null)
  97:       val = properties.get(val);
  98:     return val;
  99:   }
 100: 
 101:   public void flush()
 102:   {
 103:     // TODO: Implement this.
 104:     throw new UnsupportedOperationException("Not yet implemented.");
 105:   }
 106: 
 107:   protected void finalize()
 108:   {
 109:     pixmap.free();
 110:   }
 111: }