diff options
Diffstat (limited to 'dvi/mdvi-lib/tfm.c')
| -rw-r--r-- | dvi/mdvi-lib/tfm.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/dvi/mdvi-lib/tfm.c b/dvi/mdvi-lib/tfm.c deleted file mode 100644 index 3779c6b..0000000 --- a/dvi/mdvi-lib/tfm.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Copyright (C) 2000, Matias Atria - * - * 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 - */ - -#include <stdlib.h> -#include <stdarg.h> -#include <string.h> -#include <sys/stat.h> -#include <unistd.h> - -#include "mdvi.h" -#include "private.h" - -static int tfm_load_font __PROTO((DviParams *, DviFont *)); -static int tfm_font_get_glyph __PROTO((DviParams *, DviFont *, int)); - -DviFontInfo tfm_font_info = { - "TFM", - 0, /* scaling not supported by format */ - tfm_load_font, - tfm_font_get_glyph, - mdvi_shrink_box, - mdvi_shrink_box, - NULL, /* free */ - NULL, /* reset */ - NULL, /* lookup */ - kpse_tfm_format, - NULL -}; - -DviFontInfo ofm_font_info = { - "OFM", - 0, /* scaling not supported by format */ - tfm_load_font, - tfm_font_get_glyph, - mdvi_shrink_box, - mdvi_shrink_box, - NULL, /* free */ - NULL, /* reset */ - NULL, /* lookup */ - kpse_ofm_format, - NULL -}; - -DviFontInfo afm_font_info = { - "AFM", - 0, /* scaling not supported by format */ - tfm_load_font, - tfm_font_get_glyph, - mdvi_shrink_box, - mdvi_shrink_box, - NULL, /* free */ - NULL, /* reset */ - NULL, /* lookup */ - kpse_afm_format, - NULL -}; - -#define TYPENAME(font) \ - ((font)->search.info ? (font)->search.info : "none") - -/* - * Although it does not seem that way, this conversion is independent of the - * shrinking factors, within roundoff (that's because `conv' and `vconv' - * have already been scaled by hshrink and vshrink, repsectively). We - * should really use `dviconv' and `dvivconv', but I'm not so sure those - * should be moved to the DviParams structure. - */ -#define XCONV(x) FROUND(params->conv * (x) * params->hshrink) -#define YCONV(y) FROUND(params->vconv * (y) * params->vshrink) - -/* this is used quite often in several places, so I made it standalone */ -int get_tfm_chars(DviParams *params, DviFont *font, TFMInfo *info, int loaded) -{ - 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; -} - -/* - * We use this function as a last resort to find the character widths in a - * font The DVI rendering code can correctly skip over a glyph if it knows - * its TFM width, which is what we try to find here. - */ -static int tfm_load_font(DviParams *params, DviFont *font) -{ - 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) { - 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; -} - -static int tfm_font_get_glyph(DviParams *params, DviFont *font, int code) -{ - 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; -} |