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

   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: }