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font.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004 The ScummVM project
 *
 * The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/saga/font.h,v 1.8 2004/10/27 21:32:27 aquadran Exp $
 *
 */

// Font management and font drawing header file

#ifndef SAGA_FONT_H__
#define SAGA_FONT_H__

#include "saga/gfx.h"

namespace Saga {

#define FONT_SHOWUNDEFINED 1  // Define to draw undefined characters * as ?'s

// The first defined character (!) is the only one that may 
// have a valid offset of '0'
#define FONT_FIRSTCHAR 33

#define FONT_CH_SPACE 32
#define FONT_CH_QMARK 63

// Minimum font header size without font data 
// (6 + 512 + 256 + 256 + 256 )
#define FONT_DESCSIZE 1286

#define FONT_CHARCOUNT 256
#define FONT_CHARMASK 0xFFU

#define SAGA_FONT_HEADER_LEN 6

enum FONT_ID {
      SMALL_FONT_ID,
      MEDIUM_FONT_ID,
      BIG_FONT_ID
};

enum FONT_EFFECT_FLAGS {
      FONT_NORMAL = 0x00,
      FONT_OUTLINE = 0x01,
      FONT_SHADOW = 0x02,
      FONT_BOLD = 0x04,
      FONT_CENTERED = 0x08
};

struct FONT_HEADER {
      int c_height;
      int c_width;
      int row_length;
};

struct FONT_CHAR_ENTRY {
      int index;
      int byte_width;
      int width;
      int flag;
      int tracking;
};

struct FONT_STYLE {
      FONT_HEADER hdr;
      FONT_CHAR_ENTRY fce[256];
      byte *font_free_p;
      byte *font_p;
};

struct FONT {
      uint32 font_rn;
      int font_id;

      int normal_loaded;
      FONT_STYLE *normal;
      int outline_loaded;
      FONT_STYLE *outline;

      byte *res_data;
      size_t res_len;
};

class Font {
 public:
      Font(SagaEngine *vm);
      ~Font(void);
      int draw(int font_id, SURFACE *ds, const char *draw_str, size_t draw_str_len,
                          int text_x, int text_y, int color, int effect_color, int flags);
      int getStringWidth(int font_id, const char *test_str, size_t test_str_ct, int flags);
      int getHeight(int font_id);

 private:

      int loadFont(uint32 font_rn, int font_id);
      FONT_STYLE *createOutline(FONT_STYLE * src_font);
      int outFont(FONT_STYLE *font, SURFACE * ds, const char *draw_str, size_t draw_str_ct,
                         int text_x, int text_y, int color);
      int getByteLen(int num_bits);

      static const int _charMap[256];
      SagaEngine *_vm;

      bool _initialized;
      RSCFILE_CONTEXT *_fontContext;

      int _nFonts;
      FONT **_fonts;
};

} // End of namespace Saga

#endif

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