#include <config.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "mdvi.h"
#include "private.h"

Include dependency graph for tfm.c:

Macros
#define	TYPENAME(font) ((font)->search.info ? (font)->search.info : "none")

#define	XCONV(x) FROUND(params->conv * (x) * params->hshrink)

#define	YCONV(y) FROUND(params->vconv * (y) * params->vshrink)

Functions
static int tfm_load_font	__PROTO ((DviParams , DviFont ))

static int tfm_font_get_glyph	__PROTO ((DviParams , DviFont , int))

int	get_tfm_chars (DviParams params, DviFont font, TFMInfo *info, int loaded)

static int	tfm_load_font (DviParams params, DviFont font)

static int	tfm_font_get_glyph (DviParams params, DviFont font, int code)

Variables
DviFontInfo	tfm_font_info

DviFontInfo	ofm_font_info

DviFontInfo	afm_font_info

Macro Definition Documentation

#define TYPENAME ( font) ((font)->search.info ? (font)->search.info : "none")

Definition at line 74 of file tfm.c.

#define XCONV ( x) FROUND(params->conv * (x) * params->hshrink)

Definition at line 84 of file tfm.c.

#define YCONV ( y) FROUND(params->vconv * (y) * params->vshrink)

Definition at line 85 of file tfm.c.

Function Documentation

static int tfm_load_font __PROTO ( (DviParams *, DviFont *) )

static

static int tfm_font_get_glyph __PROTO ( (DviParams *, DviFont *, int) )

static

int get_tfm_chars	(	DviParams *	params,
		DviFont *	font,
		TFMInfo *	info,
		int	loaded
	)

Definition at line 88 of file tfm.c.

 {
     Int32   z, alpha, beta;
     int n;
     DviFontChar *ch;
     TFMChar *ptr;
     
     n = info->hic - info->loc + 1;
     if(n != FONT_GLYPH_COUNT(font)) {
         font->chars = mdvi_realloc(font->chars,
             n * sizeof(DviFontChar));
     }
     font->loc = info->loc;
     font->hic = info->hic;  
     ch = font->chars;
     ptr = info->chars;
 
     /* Prepare z, alpha and beta for TFM width computation */
     TFMPREPARE(font->scale, z, alpha, beta);
 
     /* get the character metrics */
     for(n = info->loc; n <= info->hic; ch++, ptr++, n++) {
         int a, b, c, d;
 
         ch->offset = ptr->present;
         if(ch->offset == 0)
             continue;
         /* this is what we came here for */
         ch->tfmwidth    = TFMSCALE(z, ptr->advance, alpha, beta);
         /* scale all other TFM units (so they are in DVI units) */
         a = TFMSCALE(z, ptr->left, alpha, beta);
         b = TFMSCALE(z, ptr->right, alpha, beta);
         c = TFMSCALE(z, ptr->height, alpha, beta);
         d = TFMSCALE(z, ptr->depth, alpha, beta);
 
         /* now convert to unscaled pixels */        
         ch->width = XCONV(b - a);
         ch->height = YCONV(c - d);
         if(ch->height < 0) ch->height = -ch->height;
         ch->x = XCONV(a);
         ch->y = YCONV(c);
         /*
          * the offset is not used, but we might as well set it to 
          * something meaningful (and it MUST be non-zero)
          */
         ch->flags       = 0;
         ch->code        = n;
         ch->glyph.data  = NULL;
         ch->grey.data   = NULL;
         ch->shrunk.data = NULL;
         ch->loaded      = loaded;
     }
 
     return 0;
 }

Here is the caller graph for this function:

static int tfm_font_get_glyph	(	DviParams *	params,
		DviFont *	font,
		int	code
	)

static

Definition at line 195 of file tfm.c.

 {
     DviFontChar *ch;
     
     ch = FONTCHAR(font, code);
     if(!glyph_present(ch))
         return -1;
     ch->glyph.x = ch->x;
     ch->glyph.y = ch->y;
     ch->glyph.w = ch->width;
     ch->glyph.h = ch->height;
     /* 
      * This has two purposes: (1) avoid unnecessary calls to this function,
      * and (2) detect when the glyph data for a TFM font is actually used 
      * (we'll get a SEGV). Any occurrence of that is a bug.
      */
     ch->glyph.data = MDVI_GLYPH_EMPTY;
 
     return 0;
 }

static int tfm_load_font	(	DviParams *	params,
		DviFont *	font
	)

static

Definition at line 149 of file tfm.c.

 {
     TFMInfo *tfm;
     int type;
 
     switch(font->search.info->kpse_type) {
     case kpse_tfm_format:
         type = DviFontTFM;
         break;
     case kpse_afm_format:
         type = DviFontAFM;
         break;
     case kpse_ofm_format:
         type = DviFontOFM;
         break;
     default:
         return -1;
     }
 
     /* we don't need this */
     if(font->in) {
         fclose(font->in);
         font->in = NULL;
     }
     tfm = get_font_metrics(font->fontname, type, font->filename);
     if(tfm == NULL)
         return -1;
             
     if(tfm->checksum && font->checksum && tfm->checksum != font->checksum) {
         mdvi_warning(_("%s: Checksum mismatch (got %u, expected %u)\n"),
                  font->fontname, (unsigned)tfm->checksum, 
                  (unsigned)font->checksum);
     }
     font->checksum = tfm->checksum;
     font->design = tfm->design;
     font->loc = 0;
     font->hic = 0;
     font->chars = NULL;
     get_tfm_chars(params, font, tfm, 1);
     
     /* free everything */
     free_font_metrics(tfm);
     
     return 0;
 }

Variable Documentation

DviFontInfo afm_font_info

Initial value:

= {
    "AFM",
    0, 
    tfm_load_font,
    tfm_font_get_glyph,
    mdvi_shrink_box,
    mdvi_shrink_box,
    NULL,   
    NULL,   
    NULL,   
    kpse_afm_format,
    NULL
}

Definition at line 60 of file tfm.c.

DviFontInfo ofm_font_info

Initial value:

= {
    "OFM",
    0, 
    tfm_load_font,
    tfm_font_get_glyph,
    mdvi_shrink_box,
    mdvi_shrink_box,
    NULL,   
    NULL,   
    NULL,   
    kpse_ofm_format,
    NULL
}

Definition at line 46 of file tfm.c.

DviFontInfo tfm_font_info

Initial value:

= {
    "TFM",
    0, 
    tfm_load_font,
    tfm_font_get_glyph,
    mdvi_shrink_box,
    mdvi_shrink_box,
    NULL,   
    NULL,   
    NULL,   
    kpse_tfm_format,
    NULL
}

Definition at line 32 of file tfm.c.

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation