/*
 * Copyright (c) 1993-1997, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED 
 * Permission to use, copy, modify, and distribute this software for 
 * any purpose and without fee is hereby granted, provided that the above
 * copyright notice appear in all copies and that both the copyright notice
 * and this permission notice appear in supporting documentation, and that 
 * the name of Silicon Graphics, Inc. not be used in advertising
 * or publicity pertaining to distribution of the software without specific,
 * written prior permission. 
 */

/*
 * Created on 25/02/2006
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/*
 *  Drawf.java
 * 
 *  Draws the bitmapped letter F on the screen (several times).
 *  This demonstrates use of the glBitmap() call.*
 * 
 * @translated to Java by Wu Shin-Ting
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.opengl.*;

public class Drawf extends JFrame implements GLEventListener, 
					     KeyListener {
    public static final Dimension PREFERRED_FRAME_SIZE = new Dimension(100, 100);

    byte rasters[] = {(byte)0xc0, (byte)0x00, (byte)0xc0, (byte)0x00, (byte)0xc0, 
		      (byte)0x00, (byte)0xc0, (byte)0x00, (byte)0xc0, (byte)0x00,
		      (byte)0xff, (byte)0x00, (byte)0xff, (byte)0x00, (byte)0xc0, (byte)0x00, 
		      (byte)0xc0, (byte)0x00, (byte)0xc0, (byte)0x00, (byte)0xff, (byte)0xc0, 
		      (byte)0xff, (byte)0xc0};

    /** Constructor.
     */
    public Drawf() {
	// init JFrame
	super ("Drawf - JMDM version ");
	System.out.println("Constructor");
    }

    /** We'd like to be 500x500, please.
     */
    public Dimension getPreferredSize(){
	return PREFERRED_FRAME_SIZE;

    }

    /*
     * METHODS DEFINED BY GLEventListener
     */

    /** Called by drawable to initiate drawing. 
     */
    public void display(GLAutoDrawable drawable) {
		
	GL gl = drawable.getGL();
	
	gl.glClear(GL.GL_COLOR_BUFFER_BIT);
	gl.glColor3f (1.0f, 1.0f, 1.0f);
	gl.glRasterPos2i (20, 20);
	gl.glBitmap (10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters, 0);
	gl.glBitmap (10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters, 0);
	gl.glBitmap (10, 12, 0.0f, 0.0f, 11.0f, 0.0f, rasters, 0);
	   
	gl.glFlush();
    }

    /** Called by drawable to indicate mode or device has changed.
     */
    public void displayChanged(GLAutoDrawable drawable, 
			       boolean modeChanged, 
			       boolean deviceChanged){}

    /** Called after OpenGL is init'ed
     */
    public void init(GLAutoDrawable drawable) {

    	System.out.println("init()");

    	GL gl = drawable.getGL();

    	System.err.println("INIT GL IS: " + gl.getClass().getName());
    	System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
    	System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
    	System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));

	gl.glPixelStorei (GL.GL_UNPACK_ALIGNMENT, 1);
	gl.glClearColor (0.0f, 0.0f, 0.0f, 0.0f);

	// add a GLEventListener, which will get called when a
        // key is pressed
	drawable.addKeyListener(this);    	
    }

    /** Called to indicate the drawing surface has been moved and/or resized.
     */
    public void reshape(GLAutoDrawable drawable, 
			int x, int y, 
			int width, int height){

    	System.out.println("reshape()");

    	GL gl = drawable.getGL();

    	gl.glViewport(0, 0, width, height); 
    	gl.glMatrixMode (GL.GL_PROJECTION);
    	gl.glLoadIdentity ();
    	gl.glOrtho (0, width, 0, height, -1.f, 1.f);
    	gl.glMatrixMode (GL.GL_MODELVIEW);
    	
    }

    /*
     * OUR HELPER METHODS
     */

    // Methods required for the implementation of KeyListener

    public void keyPressed(KeyEvent e){
	System.out.println("Key pressed");
    	if (e.getKeyChar() == 27){
	    System.exit(0);
    	}
    }

    public void keyReleased(KeyEvent e){}
    
    public void keyTyped(KeyEvent e){}
        
    /** main creates and shows a Drawf-JFrame
     */
    public static void main(String[] args){

    	Drawf g = new Drawf();    
    	//Set frame location
    	g.setLocation(100,100);
       	GLCapabilities gl_c = new GLCapabilities();
    	// Disable double buffer
    	gl_c.setDoubleBuffered(false);
     	// get a GLCanvas
    	GLCanvas canvas = new GLCanvas(gl_c);
     	// add a GLEventListener, which will get called when the
    	// canvas is resized or needs a repaint
    	canvas.addGLEventListener(g);
    	// now add the canvas to the JFrame.  Note we use BorderLayout.CENTER
    	// to make the canvas stretch to fill the container (ie, the frame)
    	g.getContentPane().add(canvas, BorderLayout.CENTER);

    	g.pack();
    	g.setVisible(true);

    }
}