Source for gnu.java.awt.peer.gtk.GtkVolatileImage

   1: /* GtkVolatileImage.java -- a hardware-accelerated image buffer
   2:    Copyright (C) 2005  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: package gnu.java.awt.peer.gtk;
  39: 
  40: import java.awt.ImageCapabilities;
  41: import java.awt.Graphics2D;
  42: import java.awt.GraphicsConfiguration;
  43: import java.awt.image.BufferedImage;
  44: import java.awt.image.ImageObserver;
  45: import java.awt.image.VolatileImage;
  46: 
  47: public class GtkVolatileImage extends VolatileImage
  48: {
  49:   private int width;
  50:   private int height;
  51:   private ImageCapabilities caps;
  52: 
  53:   public GtkVolatileImage(int width, int height)
  54:   {
  55:     this(width, height, null);
  56:   }
  57: 
  58:   public GtkVolatileImage(int width, int height, ImageCapabilities caps)
  59:   {
  60:     this.width = width;
  61:     this.height = height;
  62:     this.caps = caps;
  63:   }
  64: 
  65:   // FIXME: should return a buffered image snapshot of the accelerated
  66:   // visual
  67:   public BufferedImage getSnapshot()
  68:   {
  69:     return null;
  70:   }
  71: 
  72:   public int getWidth()
  73:   {
  74:     return width;
  75:   }
  76: 
  77:   public int getHeight()
  78:   {
  79:     return height;
  80:   }
  81: 
  82:   // FIXME: should return a graphics wrapper around this image's
  83:   // visual
  84:   public Graphics2D createGraphics()
  85:   {
  86:     return null;
  87:   }
  88: 
  89:   public int validate(GraphicsConfiguration gc)
  90:   {
  91:     return VolatileImage.IMAGE_OK;
  92:   }
  93: 
  94:   public boolean contentsLost()
  95:   {
  96:     return false;
  97:   }
  98: 
  99:   public ImageCapabilities getCapabilities()
 100:   {
 101:     return caps;
 102:   }
 103: 
 104:   public synchronized Object getProperty (String name, ImageObserver observer)
 105:   {
 106:     return null;
 107:   }
 108: 
 109:   public synchronized int getWidth (ImageObserver observer)
 110:   {
 111:     return width;
 112:   }
 113:   
 114:   public synchronized int getHeight (ImageObserver observer)
 115:   {
 116:     return height;
 117:   }
 118: }