package telnet;

import java.io.*;
import javax.microedition.lcdui.*;

/* This file is part of "Telnet Floyd".
 *
 * (c) Radek Polak 2003-2004. All Rights Reserved.
 *
 * Please visit project homepage at http://phoenix.inf.upol.cz/~polakr
 *
 * --LICENSE NOTICE--
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * --LICENSE NOTICE--
 *
 */


/**
 * You can draw characters using this class.
 * Character size is 3x5 resp. 4x6 when taking into a count spaces between them.
 */

public class DrawFont {

  public final int width =4;
  public final int height = 6;

  public int[][] data = new int[128][];

  public DrawFont() {
    try {
      InputStream in = getClass().getResourceAsStream("font");
      for (int i = 33; i < 128; i++) {
        int b = in.read();
        int l = ( b & 3 ) + 2;  // length could be 1,2,3 or 4; this is len+1
        data[i] = new int[l];   // one more for template
        data[i][0] = (b >> 2)-32;      // draw this template
//        System.out.println("--- ascii "+i +"---" );
//        System.out.println("header "+b );
//        System.out.println("len "+(l-1) );
//        System.out.println("template "+ data[i][0] );
        for( int j=1; j<l; j++ )
        {
          data[i][j] = in.read();
//          System.out.println("data["+j+"]" + data[i][j] );
        }
      }
      in.close();
    }
    catch( Exception e )
    {
      e.printStackTrace();
    }
  }

  public void drawChars( Graphics g, char[] chars, int offset, int length, int x, int y )
  {
    for( int i=offset; i<offset+length; i++ )
    {
      drawChar(g, chars[i], x, y);
      x += width;
    }
  }

  public void drawChar( Graphics g, char c, int x, int y )
  {
    if( data[c] == null ) return;
    for( int j=1; j<data[c].length; j++ )
    {
      int x1 = data[c][j] & 3;
      int y1 = ( data[c][j] & 12 ) >> 2;
      int x2 = ( data[c][j] & 48 ) >> 4;
      int y2 = ( data[c][j] & 192 ) >> 6;

      if( x1 == 3 )
      {
        x1 = y1;
        y1 = 4;
      }

      if( x2 == 3 )
      {
        x2 = y2;
        y2 = 4;
      }

//      System.out.println( "char " + c + " x1=" + x1 + " y1="+ (4-y1) +" x2=" + x2 + " y2="+ (4-y2));

      g.drawLine( x+x1, y+y1, x+x2, y+y2 );
    }
    if( data[c][0] != 0 )
      drawChar( g, (char)(c+data[c][0]), x, y );  // draw template
  }

}