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

   1 /* GLGraphics.java -- Graphics2D impl on top of GLX
   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 package gnu.java.awt.peer.x;
  39
  40 import java.awt.Color;
  41 import java.awt.GraphicsConfiguration;
  42 import java.awt.Rectangle;
  43 import java.awt.image.ColorModel;
  44 import java.util.Map;
  45
  46 import gnu.java.awt.java2d.AbstractGraphics2D;
  47 import gnu.x11.extension.glx.GL;
  48
  49 /**
  50  * An implementation of Graphics2D on top of the GLX extension of X.
  51  *
  52  * @author Roman Kennke (kennke@aicas.com)
  53  */
  54 public class GLGraphics extends AbstractGraphics2D
  55 {
  56
  57   /**
  58    * The rendering context.
  59    */
  60   private GL gl;
  61
  62   /**
  63    * Creates a new GLGraphics that paints on the specified GL context.
  64    *
  65    * @param g the GL context to paint to
  66    */
  67   GLGraphics(GL g)
  68   {
  69     gl = g;
  70   }
  71
  72   public void setBackground(Color b)
  73   {
  74     super.setBackground(b);
  75
  76     gl.clearColor(b.getRed() / 255.F, b.getGreen() / 255.F,
  77                    b.getBlue() / 255.F, b.getAlpha() / 255.F);
  78   }
  79
  80   public void clearRect(int x, int y, int w, int h)
  81   {
  82     // TODO: Maybe use fillRect().
  83     gl.clear(GL.COLOR_BUFFER_BIT);
  84   }
  85
  86   public void drawLine(int x1, int y1, int x2, int y2)
  87   {
  88     gl.begin(GL.LINES);
  89     gl.vertex2i(x1, y1);
  90     gl.vertex2i(x2, y2);
  91     gl.end();
  92     // TODO: Maybe do:
  93     // gl.flush();
  94   }
  95
  96   public void drawRect(int x, int y, int w, int h)
  97   {
  98     gl.polygon_mode(GL.FRONT_AND_BACK, GL.LINE);
  99     gl.begin(GL.POLYGON);
 100     gl.recti(x, y, x + w, y + h);
 101     gl.end();
 102     // TODO: Maybe do:
 103     // gl.flush();
 104   }
 105
 106   public void fillRect(int x, int y, int w, int h)
 107   {
 108     gl.polygon_mode(GL.FRONT_AND_BACK, GL.FILL);
 109     gl.recti(x, y, x + w, y + h);
 110     // TODO: Maybe do:
 111     // gl.flush();
 112   }
 113
 114   protected ColorModel getColorModel()
 115   {
 116     // FIXME: Implement this.
 117     throw new UnsupportedOperationException("Not yet implemented");
 118   }
 119
 120   public GraphicsConfiguration getDeviceConfiguration()
 121   {
 122     // FIXME: Implement this.
 123     throw new UnsupportedOperationException("Not yet implemented");
 124   }
 125
 126   @Override
 127   protected Rectangle getDeviceBounds()
 128   {
 129     // FIXME: not sure it's correct
 130     return new Rectangle(0, 0,
 131                          gl.display.default_screen.width,
 132                          gl.display.default_screen.height);
 133   }
 134 }