sfont.h

用于LINUX摄像头的相关程序

/*  SFont: a simple font-library that uses special bitmaps as fonts
    Copyright (C) 2003 Karl Bartel

    License: GPL or LGPL (at your choice)
    WWW: http://www.linux-games.com/sfont/

    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   
                                                                                
    Karl Bartel
    Cecilienstr. 14                                                    
    12307 Berlin
    GERMANY
    [e-mail]                                                      
*/                                                                            

/************************************************************************ 
*    SFONT - SDL Font Library by Karl Bartel <[e-mail]>		*
*                                                                       *
*  All functions are explained below. There are two versions of each    *
*  funtction. The first is the normal one, the function with the        *
*  2 at the end can be used when you want to handle more than one font  *
*  in your program.                                                     *
*                                                                       *
************************************************************************/
#ifndef SFONT_H
#define SFONT_H

#include <SDL.h>

#ifdef __cplusplus 
extern "C" {
#endif

// Delcare one variable of this type for each font you are using.
// To load the fonts, load the font image into YourFont->Surface
// and call InitFont( YourFont );
typedef struct {
	SDL_Surface *Surface;	
	int CharPos[512];
	int MaxPos;
} SFont_Font;

// Initializes the font
// Font: this contains the suface with the font.
//       The font must be loaded before using this function.
SFont_Font* SFont_InitFont (SDL_Surface *Font);
void SFont_FreeFont(SFont_Font* Font);

// Blits a string to a surface
// Destination: the suface you want to blit to
// text: a string containing the text you want to blit.
void SFont_Write(SDL_Surface *Surface, const SFont_Font *Font, int x, int y,
				 const char *text);

// Returns the width of "text" in pixels
int SFont_TextWidth(const SFont_Font* Font, const char *text);
// Returns the height of "text" in pixels (which is always equal to Font->Surface->h)
int SFont_TextHeight(const SFont_Font* Font);

// Blits a string to Surface with centered x position
void SFont_WriteCenter(SDL_Surface *Surface, const SFont_Font* Font, int y,
					   const char *text);

#ifdef __cplusplus
}
#endif

#endif /* SFONT_H */