/* Copyright (c) 1996-2007 Han The Thanh, This file is part of pdfTeX. pdfTeX 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. pdfTeX 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 pdfTeX; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "ptexlib.h" static const char _svn_version[] = "$Id: writefont.c 10280 2008-08-12 17:15:53Z thanh $ $URL: http://scm.foundry.supelec.fr/svn/pdftex/branches/stable/source/src/texk/web2c/pdftexdir/writefont.c $"; /**********************************************************************/ struct avl_table *fo_tree = NULL; /* tree of font dictionaries */ struct avl_table *fd_tree = NULL; /* tree of font descriptor objects */ static int comp_fo_entry(const void *pa, const void *pb, void *p) { return strcmp(((const fo_entry *) pa)->fm->tfm_name, ((const fo_entry *) pb)->fm->tfm_name); } static int comp_fd_entry(const void *pa, const void *pb, void *p) { int i; const fd_entry *p1 = (const fd_entry *) pa, *p2 = (const fd_entry *) pb; assert(p1->fm != NULL && is_fontfile(p1->fm) && p2->fm != NULL && is_fontfile(p2->fm)); if ((i = strcmp(p1->fm->ff_name, p2->fm->ff_name)) != 0) return i; cmp_return(p1->fm->slant, p2->fm->slant); cmp_return(p1->fm->extend, p2->fm->extend); return 0; } /**********************************************************************/ /* initialize data structure for /Type /Font */ fo_entry *new_fo_entry(void) { fo_entry *fo; fo = xtalloc(1, fo_entry); fo->fo_objnum = 0; fo->tex_font = 0; fo->fm = NULL; fo->fd = NULL; fo->fe = NULL; fo->cw = NULL; fo->first_char = 1; fo->last_char = 0; fo->tounicode_objnum = 0; return fo; } /* initialize data structure for /Type /FontDescriptor */ fd_entry *new_fd_entry(void) { fd_entry *fd; int i; fd = xtalloc(1, fd_entry); fd->fd_objnum = 0; fd->fontname = NULL; fd->subset_tag = NULL; fd->ff_found = false; fd->ff_objnum = 0; fd->fn_objnum = 0; fd->all_glyphs = false; fd->write_ttf_glyph_names = false; for (i = 0; i < FONT_KEYS_NUM; i++) { fd->font_dim[i].val = 0; fd->font_dim[i].set = false; } fd->fe = NULL; fd->builtin_glyph_names = NULL; fd->fm = NULL; fd->tx_tree = NULL; fd->gl_tree = NULL; return fd; } /* initialize data structure for /Widths array object */ cw_entry *new_cw_entry(void) { cw_entry *cw; cw = xtalloc(1, cw_entry); cw->cw_objnum = 0; cw->width = NULL; return cw; } /**********************************************************************/ /* * Only fallback values of font metrics are taken from the TFM info * of f by preset_fontmetrics(). During reading of the font file, * these values are replaced by metrics from the font, if available. */ static void preset_fontmetrics(fd_entry * fd, internalfontnumber f) { int i; fd->font_dim[ITALIC_ANGLE_CODE].val = dividescaled(-atan(getslant(f) / 65536.0) * (180 / M_PI), pdffontsize[f], 3); fd->font_dim[ASCENT_CODE].val = dividescaled(getcharheight(f, 'h'), pdffontsize[f], 3); fd->font_dim[CAPHEIGHT_CODE].val = dividescaled(getcharheight(f, 'H'), pdffontsize[f], 3); i = -dividescaled(getchardepth(f, 'y'), pdffontsize[f], 3); fd->font_dim[DESCENT_CODE].val = i < 0 ? i : 0; fd->font_dim[STEMV_CODE].val = dividescaled(getcharwidth(f, '.') / 3, pdffontsize[f], 3); fd->font_dim[XHEIGHT_CODE].val = dividescaled(getxheight(f), pdffontsize[f], 3); fd->font_dim[FONTBBOX1_CODE].val = 0; fd->font_dim[FONTBBOX2_CODE].val = fd->font_dim[DESCENT_CODE].val; fd->font_dim[FONTBBOX3_CODE].val = dividescaled(getquad(f), pdffontsize[f], 3); fd->font_dim[FONTBBOX4_CODE].val = fd->font_dim[CAPHEIGHT_CODE].val > fd->font_dim[ASCENT_CODE].val ? fd->font_dim[CAPHEIGHT_CODE].val : fd->font_dim[ASCENT_CODE].val; for (i = 0; i < INT_KEYS_NUM; i++) fd->font_dim[i].set = true; } static void fix_fontmetrics(fd_entry * fd) { intparm *p = (intparm *) fd->font_dim; if (!p[FONTBBOX1_CODE].set || !p[FONTBBOX2_CODE].set || !p[FONTBBOX3_CODE].set || !p[FONTBBOX4_CODE].set) { pdftex_warn("font `%s' doesn't have a BoundingBox", fd->fm->ff_name); return; } if (!p[ASCENT_CODE].set) { p[ASCENT_CODE].val = p[FONTBBOX4_CODE].val; p[ASCENT_CODE].set = true; } if (!p[DESCENT_CODE].set) { p[DESCENT_CODE].val = p[FONTBBOX2_CODE].val; p[DESCENT_CODE].set = true; } if (!p[CAPHEIGHT_CODE].set) { p[CAPHEIGHT_CODE].val = p[FONTBBOX4_CODE].val; p[CAPHEIGHT_CODE].set = true; } } static void write_fontmetrics(fd_entry * fd) { int i; fix_fontmetrics(fd); if (fd->font_dim[FONTBBOX1_CODE].set && fd->font_dim[FONTBBOX2_CODE].set && fd->font_dim[FONTBBOX3_CODE].set && fd->font_dim[FONTBBOX4_CODE].set) pdf_printf("/%s [%i %i %i %i]\n", font_key[FONTBBOX1_CODE].pdfname, (int) fd->font_dim[FONTBBOX1_CODE].val, (int) fd->font_dim[FONTBBOX2_CODE].val, (int) fd->font_dim[FONTBBOX3_CODE].val, (int) fd->font_dim[FONTBBOX4_CODE].val); for (i = 0; i < GEN_KEY_NUM; i++) if (fd->font_dim[i].set) pdf_printf("/%s %i\n", font_key[i].pdfname, fd->font_dim[i].val); } /**********************************************************************/ static void preset_fontname(fo_entry * fo) { if (fo->fm->ps_name != NULL) fo->fd->fontname = xstrdup(fo->fm->ps_name); /* just fallback */ else fo->fd->fontname = xstrdup(fo->fm->tfm_name); } static void write_fontname(fd_entry * fd, char *key) { assert(fd->fontname != NULL); pdf_puts("/"); if (key != NULL) pdf_printf("%s /", key); if (fd->subset_tag != NULL) pdf_printf("%s+", fd->subset_tag); pdf_printf("%s\n", fd->fontname); } static void write_fontname_object(fd_entry * fd) { assert(fd->fn_objnum != 0); pdfbeginobj(fd->fn_objnum, 1); write_fontname(fd, NULL); pdfendobj(); } /**********************************************************************/ fd_entry *lookup_fd_entry(char *s, integer slant, integer extend) { fd_entry fd; fm_entry fm; assert(s != NULL); fm.ff_name = s; fm.slant = slant; fm.extend = extend; fd.fm = &fm; if (fd_tree == NULL) { fd_tree = avl_create(comp_fd_entry, NULL, &avl_xallocator); assert(fd_tree != NULL); } return (fd_entry *) avl_find(fd_tree, &fd); } fd_entry *lookup_fontdescriptor(fo_entry * fo) { assert(fo != NULL); assert(fo->fm != NULL); assert(is_fontfile(fo->fm)); return lookup_fd_entry(fo->fm->ff_name, fo->fm->slant, fo->fm->extend); } void register_fd_entry(fd_entry * fd) { void **aa; if (fd_tree == NULL) { fd_tree = avl_create(comp_fd_entry, NULL, &avl_xallocator); assert(fd_tree != NULL); } assert(fd != NULL && fd->fm != NULL && is_fontfile(fd->fm)); assert(lookup_fd_entry(fd->fm->ff_name, fd->fm->slant, fd->fm->extend) == NULL); /* font descriptor not yet registered */ aa = avl_probe(fd_tree, fd); assert(aa != NULL); } void create_fontdescriptor(fo_entry * fo, internalfontnumber f) { assert(fo != NULL); assert(fo->fm != NULL); assert(fo->fd == NULL); fo->fd = new_fd_entry(); preset_fontname(fo); preset_fontmetrics(fo->fd, f); fo->fd->fe = fo->fe; /* encoding needed by TrueType writing */ fo->fd->fm = fo->fm; /* map entry needed by TrueType writing */ fo->fd->gl_tree = avl_create(comp_string_entry, NULL, &avl_xallocator); assert(fo->fd->gl_tree != NULL); } /**********************************************************************/ /* * For all used characters of TeX font f, get corresponding glyph names * from external reencoding (.enc) file and collect these in the glyph * tree gl_tree of font descriptor fd referenced by font dictionary fo. */ void mark_reenc_glyphs(fo_entry * fo, internalfontnumber f) { int i; char **g; void **aa; assert(fo->fe != NULL); if (is_subsetted(fo->fm)) { assert(is_included(fo->fm)); /* mark glyphs from TeX (externally reencoded characters) */ g = fo->fe->glyph_names; for (i = fo->first_char; i <= fo->last_char; i++) { if (pdfcharmarked(f, i) && g[i] != notdef && (char *) avl_find(fo->fd->gl_tree, g[i]) == NULL) { aa = avl_probe(fo->fd->gl_tree, xstrdup(g[i])); assert(aa != NULL); } } } } /* * Function mark_chars() has 2 uses: * 1. Mark characters as chars on TeX level. * 2. Mark encoding pairs used by TeX to optimize encoding vector. */ struct avl_table *mark_chars(fo_entry * fo, struct avl_table *tx_tree, internalfontnumber f) { int i, *j; void **aa; if (tx_tree == NULL) { tx_tree = avl_create(comp_int_entry, NULL, &avl_xallocator); assert(tx_tree != NULL); } for (i = fo->first_char; i <= fo->last_char; i++) { if (pdfcharmarked(f, i) && (int *) avl_find(tx_tree, &i) == NULL) { j = xtalloc(1, int); *j = i; aa = avl_probe(tx_tree, j); assert(aa != NULL); } } return tx_tree; } /**********************************************************************/ void get_char_range(fo_entry * fo, internalfontnumber f) { int i; assert(fo != NULL); for (i = fontbc[f]; i <= fontec[f]; i++) /* search for first_char and last_char */ if (pdfcharmarked(f, i)) break; fo->first_char = i; for (i = fontec[f]; i >= fontbc[f]; i--) if (pdfcharmarked(f, i)) break; fo->last_char = i; if ((fo->first_char > fo->last_char) || !pdfcharmarked(f, fo->first_char)) { /* no character used from this font */ fo->last_char = 0; fo->first_char = fo->last_char + 1; } } void create_charwidth_array(fo_entry * fo, internalfontnumber f) { int i; assert(fo != NULL); assert(fo->cw == NULL); fo->cw = new_cw_entry(); fo->cw->width = xtalloc(256, integer); for (i = 0; i < fo->first_char; i++) fo->cw->width[i] = 0; for (i = fo->first_char; i <= fo->last_char; i++) fo->cw->width[i] = dividescaled(getcharwidth(f, i), pdffontsize[f], 4); for (i = fo->last_char + 1; i < 256; i++) fo->cw->width[i] = 0; } static void write_charwidth_array(fo_entry * fo) { int i, j; assert(fo->cw != NULL); assert(fo->cw->cw_objnum == 0); fo->cw->cw_objnum = pdfnewobjnum(); pdfbeginobj(fo->cw->cw_objnum, 1); pdf_puts("["); for (i = fo->first_char; i <= fo->last_char; i++) { pdf_printf("%i", (int) fo->cw->width[i] / 10); /* see adv_char_width() in pdftex.web */ if ((j = fo->cw->width[i] % 10) != 0) pdf_printf(".%i", j); if (i != fo->last_char) pdf_puts(" "); } pdf_puts("]\n"); pdfendobj(); } /**********************************************************************/ /* * Remark: Font objects from embedded PDF files are never registered * into fo_tree; they are individually written out. */ fo_entry *lookup_fo_entry(char *s) { fo_entry fo; fm_entry fm; assert(s != NULL); fm.tfm_name = s; fo.fm = &fm; if (fo_tree == NULL) { fo_tree = avl_create(comp_fo_entry, NULL, &avl_xallocator); assert(fo_tree != NULL); } return (fo_entry *) avl_find(fo_tree, &fo); } void register_fo_entry(fo_entry * fo) { void **aa; if (fo_tree == NULL) { fo_tree = avl_create(comp_fo_entry, NULL, &avl_xallocator); assert(fo_tree != NULL); } assert(fo != NULL); assert(fo->fm != NULL); assert(fo->fm->tfm_name != NULL); assert(lookup_fo_entry(fo->fm->tfm_name) == NULL); aa = avl_probe(fo_tree, fo); assert(aa != NULL); } /**********************************************************************/ static void write_fontfile(fd_entry * fd) { assert(is_included(fd->fm)); if (is_type1(fd->fm)) writet1(fd); else if (is_truetype(fd->fm)) writettf(fd); else if (is_opentype(fd->fm)) writeotf(fd); else assert(0); if (!fd->ff_found) return; assert(fd->ff_objnum == 0); fd->ff_objnum = pdfnewobjnum(); pdfbegindict(fd->ff_objnum, 0); /* font file stream */ if (is_type1(fd->fm)) pdf_printf("/Length1 %i\n/Length2 %i\n/Length3 %i\n", (int) t1_length1, (int) t1_length2, (int) t1_length3); else if (is_truetype(fd->fm)) pdf_printf("/Length1 %i\n", (int) ttf_length); else if (is_opentype(fd->fm)) pdf_puts("/Subtype /Type1C\n"); else assert(0); pdfbeginstream(); fb_flush(); pdfendstream(); } /**********************************************************************/ static void write_fontdescriptor(fd_entry * fd) { static const int std_flags[] = { /* indices for << start with 0, but bits start with 1, so the numbers * for << are 1 lower than the bits in table 5.20 */ /* *INDENT-OFF* */ 1 + 2 + (1 << 5), /* Courier */ 1 + 2 + (1 << 5) + (1 << 18),/* Courier-Bold */ 1 + 2 + (1 << 5) + (1 << 6), /* Courier-Oblique */ 1 + 2 + (1 << 5) + (1 << 6) + (1 << 18),/* Courier-BoldOblique */ (1 << 5), /* Helvetica */ (1 << 5) + (1 << 18),/* Helvetica-Bold */ (1 << 5) + (1 << 6), /* Helvetica-Oblique */ (1 << 5) + (1 << 6) + (1 << 18),/* Helvetica-BoldOblique */ 4, /* Symbol */ 2 + (1 << 5), /* Times-Roman */ 2 + (1 << 5) + (1 << 18),/* Times-Bold */ 2 + (1 << 5) + (1 << 6), /* Times-Italic */ 2 + (1 << 5) + (1 << 6) + (1 << 18),/* Times-BoldItalic */ 4 /* ZapfDingbats */ /* *INDENT-ON* */ }; char *glyph; struct avl_traverser t; int fd_flags; assert(fd != NULL && fd->fm != NULL); if (is_fontfile(fd->fm)) write_fontfile(fd); /* this will set fd->ff_found if font file is found */ if (fd->fn_objnum != 0) write_fontname_object(fd); if (fd->fd_objnum == 0) fd->fd_objnum = pdfnewobjnum(); pdfbegindict(fd->fd_objnum, 1); pdf_puts("/Type /FontDescriptor\n"); write_fontname(fd, "FontName"); if (fd->fm->fd_flags != FD_FLAGS_NOT_SET_IN_MAPLINE) fd_flags = (int) fd->fm->fd_flags; else if (fd->ff_found) fd_flags = FD_FLAGS_DEFAULT_EMBED; else { fd_flags = is_std_t1font(fd->fm) ? std_flags[check_std_t1font(fd->fm->ps_name)] : FD_FLAGS_DEFAULT_NON_EMBED; pdftex_warn ("No flags specified for non-embedded font `%s' (%s) (I'm using %i): " "fix your map entry.", fd->fm->ps_name != NULL ? fd->fm->ps_name : "No name given", fd->fm->tfm_name, fd_flags); } pdf_printf("/Flags %i\n", fd_flags); write_fontmetrics(fd); if (fd->ff_found) { if (is_subsetted(fd->fm) && is_type1(fd->fm)) { /* /CharSet is optional; names may appear in any order */ assert(fd->gl_tree != NULL); avl_t_init(&t, fd->gl_tree); pdf_puts("/CharSet ("); for (glyph = (char *) avl_t_first(&t, fd->gl_tree); glyph != NULL; glyph = (char *) avl_t_next(&t)) pdf_printf("/%s", glyph); pdf_puts(")\n"); } if (is_type1(fd->fm)) pdf_printf("/FontFile %i 0 R\n", (int) fd->ff_objnum); else if (is_truetype(fd->fm)) pdf_printf("/FontFile2 %i 0 R\n", (int) fd->ff_objnum); else if (is_opentype(fd->fm)) pdf_printf("/FontFile3 %i 0 R\n", (int) fd->ff_objnum); else assert(0); } pdfenddict(); } void write_fontdescriptors() { fd_entry *fd; struct avl_traverser t; if (fd_tree == NULL) return; avl_t_init(&t, fd_tree); for (fd = (fd_entry *) avl_t_first(&t, fd_tree); fd != NULL; fd = (fd_entry *) avl_t_next(&t)) write_fontdescriptor(fd); } /**********************************************************************/ void write_fontdictionary(fo_entry * fo) { assert(fo != NULL); assert(fo->fm != NULL); assert(fo->fo_objnum != 0); /* reserved as pdf_font_num[f] in pdftex.web */ /* write ToUnicode entry if needed */ if (fixedgentounicode > 0 && fo->fd != NULL) { if (fo->fe != NULL) { fo->tounicode_objnum = write_tounicode(fo->fe->glyph_names, fo->fe->name); } else if (is_type1(fo->fm)) { assert(fo->fd->builtin_glyph_names != NULL); fo->tounicode_objnum = write_tounicode(fo->fd->builtin_glyph_names, fo->fm->tfm_name); } } pdfbegindict(fo->fo_objnum, 1); pdf_puts("/Type /Font\n"); pdf_puts("/Subtype /"); if (is_type1(fo->fm)) pdf_printf("%s\n", "Type1"); else if (is_truetype(fo->fm)) pdf_printf("%s\n", "TrueType"); else if (is_opentype(fo->fm)) pdf_printf("%s\n", "Type1"); else assert(0); assert(fo->fd != NULL && fo->fd->fd_objnum != 0); write_fontname(fo->fd, "BaseFont"); pdf_printf("/FontDescriptor %i 0 R\n", (int) fo->fd->fd_objnum); assert(fo->cw != NULL); pdf_printf("/FirstChar %i\n/LastChar %i\n/Widths %i 0 R\n", (int) fo->first_char, (int) fo->last_char, (int) fo->cw->cw_objnum); if ((is_type1(fo->fm) || is_opentype(fo->fm)) && fo->fe != NULL && fo->fe->fe_objnum != 0) pdf_printf("/Encoding %i 0 R\n", (int) fo->fe->fe_objnum); if (fo->tounicode_objnum != 0) pdf_printf("/ToUnicode %i 0 R\n", (int) fo->tounicode_objnum); if (pdffontattr[fo->tex_font] != getnullstr()) { pdfprint(pdffontattr[fo->tex_font]); pdf_puts("\n"); } pdfenddict(); } void write_fontdictionaries() { fo_entry *fo; struct avl_traverser t; if (fo_tree == NULL) return; avl_t_init(&t, fo_tree); for (fo = (fo_entry *) avl_t_first(&t, fo_tree); fo != NULL; fo = (fo_entry *) avl_t_next(&t)) write_fontdictionary(fo); } /**********************************************************************/ /* * Final flush of all font related stuff by call from * @= in pdftex.web. */ void writefontstuff() { write_fontdescriptors(); write_fontencodings(); /* see writeenc.c */ write_fontdictionaries(); } /**********************************************************************/ void create_fontdictionary(fm_entry * fm, integer font_objnum, internalfontnumber f) { fo_entry *fo = new_fo_entry(); get_char_range(fo, f); /* set fo->first_char and fo->last_char from f */ assert(fo->last_char >= fo->first_char); fo->fm = fm; fo->fo_objnum = font_objnum; fo->tex_font = f; if (is_reencoded(fo->fm)) { /* at least the map entry tells so */ fo->fe = get_fe_entry(fo->fm->encname); /* returns NULL if .enc file couldn't be opened */ if (fo->fe != NULL && (is_type1(fo->fm) || is_opentype(fo->fm))) { if (fo->fe->fe_objnum == 0) fo->fe->fe_objnum = pdfnewobjnum(); /* then it will be written out */ /* mark encoding pairs used by TeX to optimize encoding vector */ fo->fe->tx_tree = mark_chars(fo, fo->fe->tx_tree, f); } } if (!is_builtin(fo->fm)) { if (is_type1(fo->fm)) { if ((fo->fd = lookup_fontdescriptor(fo)) == NULL) { create_fontdescriptor(fo, f); register_fd_entry(fo->fd); } } else create_fontdescriptor(fo, f); create_charwidth_array(fo, f); write_charwidth_array(fo); if (fo->fe != NULL) { mark_reenc_glyphs(fo, f); if (!is_type1(fo->fm)) { /* mark reencoded characters as chars on TeX level */ assert(fo->fd->tx_tree == NULL); fo->fd->tx_tree = mark_chars(fo, fo->fd->tx_tree, f); if (is_truetype(fo->fm)) fo->fd->write_ttf_glyph_names = true; } } else /* mark non-reencoded characters as chars on TeX level */ fo->fd->tx_tree = mark_chars(fo, fo->fd->tx_tree, f); if (!is_type1(fo->fm)) write_fontdescriptor(fo->fd); } else { /* builtin fonts still need the /Widths array and /FontDescriptor * (to avoid error 'font FOO contains bad /BBox') */ create_charwidth_array(fo, f); write_charwidth_array(fo); create_fontdescriptor(fo, f); write_fontdescriptor(fo->fd); if (!is_std_t1font(fo->fm)) pdftex_warn("font `%s' is not a standard font; " "I suppose it is available to your PDF viewer then", fo->fm->ps_name); } if (is_type1(fo->fm)) register_fo_entry(fo); else write_fontdictionary(fo); } /**********************************************************************/ void dopdffont(integer font_objnum, internalfontnumber f) { fm_entry *fm; fm = hasfmentry(f) ? (fm_entry *) pdffontmap[f] : NULL; if (fm == NULL || (fm->ps_name == NULL && fm->ff_name == NULL)) writet3(font_objnum, f); else create_fontdictionary(fm, font_objnum, f); } /**********************************************************************/ // vim: ts=4