ap_fonts.c

(绝对原创)Linux写的GB2312字库程序

/*
 * linux/drivers/video/fonts.c -- `Soft' font definitions
 *
 *    Created 1995 by Geert Uytterhoeven
 *    Rewritten 1998 by Martin Mares <[e-mail]>
 *
 *	2001 - Documented with DocBook
 *	- Brad Douglas <[e-mail]>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

//#include <linux/types.h>
#include <linux/string.h>
//#include <string.h>

#include "ap_font.h"

//#define NO_FONTS

/*static*/ const struct ap_font_desc *ap_fonts[] = {
	&ap_font_gb2312_16x16,
	//&ap_font_sun_8x16,
};

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#define num_fonts ARRAY_SIZE(ap_fonts)

//#ifdef NO_FONTS
//#error No fonts configured.
//#endif


/**
 *	find_font - find a font
 *	@name: string name of a font
 *
 *	Find a specified font with string name @name.
 *
 *	Returns %NULL if no font found, or a pointer to the
 *	specified font.
 *
 :*/

//const struct ap_font_desc *ap_find_font(const char *name);
const struct ap_font_desc *ap_find_font(const char *name)
/*void ap_find_font(void)*/
{
/**/
   unsigned int i;
//   unsigned char *name;

   for (i = 0; i < num_fonts; i++)
      if (!strcmp(ap_fonts[i]->name, name))
	  return ap_fonts[i];
   return NULL;

}


/**
 *	get_default_font - get default font
 *	@xres: screen size of X
 *	@yres: screen size of Y
 *
 *	Get the default font for a specified screen size.
 *	Dimensions are in pixels.
 *
 *	Returns %NULL if no font is found, or a pointer to the
 *	chosen font.
 *
 */

const struct ap_font_desc *ap_get_default_font(int xres, int yres)
{
    int i, c, cc;
    const struct ap_font_desc *f, *g;

    g = NULL;
    cc = -10000;
    for(i=0; i<num_fonts; i++) {
	f = ap_fonts[i];
	c = f->pref;

/*
#if defined(__mc68000__) || defined(CONFIG_APUS)
#ifdef CONFIG_FONT_PEARL_8x8
	if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
	    c = 100;
#endif
#ifdef CONFIG_FONT_6x11
	if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
	    c = 100;
#endif
#endif
*/
	if ((yres < 400) == (f->high <= 8))
	    c += 1000;
	if (c > cc) {
	    cc = c;
	    g = f;
	}
    }
    return g;
}