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/* GLGraphics.java -- Graphics2D impl on top of GLX

   Copyright (C) 2006 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package gnu.java.awt.peer.x;

import java.awt.Color;

import java.awt.GraphicsConfiguration;

import java.awt.Rectangle;

import java.awt.image.ColorModel;

import java.util.Map;

import gnu.java.awt.java2d.AbstractGraphics2D;

import gnu.x11.extension.glx.GL;

/**

 * An implementation of Graphics2D on top of the GLX extension of X.

 *

 * @author Roman Kennke (kennke@aicas.com)

 */

public class GLGraphics extends AbstractGraphics2D

{

  /**

   * The rendering context.

   */

  private GL gl;

  /**

   * Creates a new GLGraphics that paints on the specified GL context.

   *

   * @param g the GL context to paint to

   */

  GLGraphics(GL g)

  {

    gl = g;

  }

  public void setBackground(Color b)

  {

    super.setBackground(b);

    gl.clearColor(b.getRed() / 255.F, b.getGreen() / 255.F,

                   b.getBlue() / 255.F, b.getAlpha() / 255.F);

  }

  public void clearRect(int x, int y, int w, int h)

  {

    // TODO: Maybe use fillRect().

    gl.clear(GL.COLOR_BUFFER_BIT);

  }

  public void drawLine(int x1, int y1, int x2, int y2)

  {

    gl.begin(GL.LINES);

    gl.vertex2i(x1, y1);

    gl.vertex2i(x2, y2);

    gl.end();

    // TODO: Maybe do:

    // gl.flush();

  }

  public void drawRect(int x, int y, int w, int h)

  {

    gl.polygon_mode(GL.FRONT_AND_BACK, GL.LINE);

    gl.begin(GL.POLYGON);

    gl.recti(x, y, x + w, y + h);

    gl.end();

    // TODO: Maybe do:

    // gl.flush();

  }

  public void fillRect(int x, int y, int w, int h)

  {

    gl.polygon_mode(GL.FRONT_AND_BACK, GL.FILL);

    gl.recti(x, y, x + w, y + h);

    // TODO: Maybe do:

    // gl.flush();

  }

  protected ColorModel getColorModel()

  {

    // FIXME: Implement this.

    throw new UnsupportedOperationException("Not yet implemented");

  }

  public GraphicsConfiguration getDeviceConfiguration()

  {

    // FIXME: Implement this.

    throw new UnsupportedOperationException("Not yet implemented");

  }

  @Override

  protected Rectangle getDeviceBounds()

  {

    // FIXME: not sure it's correct

    return new Rectangle(0, 0,

                         gl.display.default_screen.width,

                         gl.display.default_screen.height);

  }

}