text: /***************************************************************************
   *   Copyright (C) 2008 by Sindre Aamås                                    *
   *   aamas@stud.ntnu.no                                                    *
   *                                                                         *
   *   This program is free software; you can redistribute it and/or modify  *
   *   it under the terms of the GNU General Public License version 2 as     *
   *   published by the Free Software Foundation.                            *
   *                                                                         *
   *   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 version 2 for more details.                *
   *                                                                         *
   *   You should have received a copy of the GNU General Public License     *
   *   version 2 along with this program; if not, write to the               *
   *   Free Software Foundation, Inc.,                                       *
   *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
   ***************************************************************************/
  #ifndef BITMAP_FONT_H
  #define BITMAP_FONT_H
  
  #include "gbint.h"
  
  namespace bitmapfont {
  enum Char {
  	NUL,
  	N0, N1, N2, N3, N4, N5, N6, N7, N8, N9,
  	A, B, C, D, E, F, G, H, I, J, K, L, M,
  	N, O, P, Q, R, S, T, U, V, W, X, Y, Z,
  	a, b, c, d, e, f, g, h, i, j, k, l, m,
  	n, o, p, q, r, s, t, u, v, w, x, y, z,
  	SPC
  };
  
  enum { HEIGHT = 10 };
  enum { MAX_WIDTH = 9 };
  enum { NUMBER_WIDTH = 6 };
  
  unsigned getWidth(const char *chars);
  
  // struct Fill { void operator()(RandomAccessIterator dest, unsigned pitch) { fill pixels at dest } }
  template<class RandomAccessIterator, class Fill>
  void print(RandomAccessIterator dest, unsigned pitch, Fill fill, const char *chars);
  
  void print(gambatte::uint_least32_t *dest, unsigned pitch, unsigned long color, const char *chars);
  void utoa(unsigned u, char *a);
  
  // --- INTERFACE END ---
  
  
  
  extern const unsigned char *const font[];
  
  template<class RandomAccessIterator, class Fill>
  void print(RandomAccessIterator dest, const unsigned pitch, Fill fill, const char *chars) {
  	while (const int character = *chars++) {
  		RandomAccessIterator dst = dest;
  		const unsigned char *s = font[character];
  		
  		const unsigned width = *s >> 4;
  		unsigned h = *s++ & 0xF;
  		
  		while (h--) {
  			RandomAccessIterator d = dst;
  			
  			unsigned line = *s++;
  			
  			if (width > 8)
  				line |= *s++ << 8;
  			
  			while (line) {
  				if (line & 1)
  					fill(d, pitch);
  				
  				line >>= 1;
  				++d;
  			}
  			
  			dst += pitch;
  		}
  		
  		dest += width;
  	}
  }
  }
  
  #endif
  