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authorMartin Schröder <martin@oneiros.de>2008-03-24 15:47:15 +0000
committerMartin Schröder <martin@oneiros.de>2008-03-24 15:47:15 +0000
commit0b5550c241229764120d133af80a0cbab5937ddd (patch)
tree81309c18d6f0deba7407813cf15b9add2db375d1 /Build/source/texk/web2c/luatexdir/font/writefont.c
parent51f55df6a36ce376952a1f2b30bdb4dd0e06548d (diff)
First step of importing luatex (up to r1121)
git-svn-id: svn://tug.org/texlive/trunk@7124 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/luatexdir/font/writefont.c')
-rw-r--r--Build/source/texk/web2c/luatexdir/font/writefont.c885
1 files changed, 885 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/luatexdir/font/writefont.c b/Build/source/texk/web2c/luatexdir/font/writefont.c
new file mode 100644
index 00000000000..05257746889
--- /dev/null
+++ b/Build/source/texk/web2c/luatexdir/font/writefont.c
@@ -0,0 +1,885 @@
+/*
+Copyright (c) 1996-2006 Han The Thanh, <thanh@pdftex.org>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: writefont.c 1112 2008-03-20 14:46:32Z taco $
+*/
+
+#include "ptexlib.h"
+
+extern void writetype0 (fd_entry * fd) ;
+extern void writetype2 (fd_entry * fd) ;
+extern unsigned long cidtogid_obj;
+
+#ifdef DO_TYPE1C
+extern void writet1c(fd_entry * fd); /* in writecff.c */
+#endif
+
+extern void writet1w (fd_entry * fd); /* in writecff.c */
+extern void writetype1w (fd_entry * fd);
+extern integer write_cid_tounicode(fo_entry * fo, internalfontnumber f); /* in tounicode.c */
+
+
+void write_cid_fontdictionary(fo_entry * fo, internalfontnumber f);
+void create_cid_fontdictionary(fm_entry * fm, integer font_objnum, internalfontnumber f);
+
+/**********************************************************************/
+
+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_objnum = 0;
+ fo->first_char = 1;
+ fo->last_char = 0;
+ fo->tx_tree = NULL;
+ 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 < INT_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;
+}
+
+/**********************************************************************/
+/*
+ * 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 =
+ divide_scaled(-atan(get_slant(f) / 65536.0) * (180 / M_PI),
+ pdf_font_size(f), 3);
+ fd->font_dim[ASCENT_CODE].val =
+ divide_scaled(char_height(f, 'h'), pdf_font_size(f), 3);
+ fd->font_dim[CAPHEIGHT_CODE].val =
+ divide_scaled(char_height(f, 'H'), pdf_font_size(f), 3);
+ i = -divide_scaled(char_depth(f, 'y'), pdf_font_size(f), 3);
+ fd->font_dim[DESCENT_CODE].val = i < 0 ? i : 0;
+ fd->font_dim[STEMV_CODE].val =
+ divide_scaled(char_width(f, '.') / 3, pdf_font_size(f), 3);
+ fd->font_dim[XHEIGHT_CODE].val =
+ divide_scaled(get_x_height(f), pdf_font_size(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 =
+ divide_scaled(get_quad(f), pdf_font_size(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 write_fontmetrics(fd_entry * fd)
+{
+ int i;
+ 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);
+ pdf_begin_obj(fd->fn_objnum, 1);
+ write_fontname(fd, NULL);
+ pdf_end_obj();
+}
+
+/**********************************************************************/
+
+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 (pdf_char_marked(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 (pdf_char_marked(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 = font_bc(f); i <= font_ec(f); i++) /* search for first_char and last_char */
+ if (pdf_char_marked(f, i))
+ break;
+ fo->first_char = i;
+ for (i = font_ec(f); i >= font_bc(f); i--)
+ if (pdf_char_marked(f, i))
+ break;
+ fo->last_char = i;
+ if ((fo->first_char > fo->last_char)
+ || !pdf_char_marked(f, fo->first_char)) { /* no character used from this font */
+ fo->last_char = 0;
+ fo->first_char = fo->last_char + 1;
+ }
+}
+
+static void write_charwidth_array(fo_entry * fo, internalfontnumber f)
+{
+ int i, j, *ip, *fip, width;
+ struct avl_traverser t;
+ assert(fo->tx_tree != NULL);
+ assert(fo->cw_objnum == 0);
+ fo->cw_objnum = pdf_new_objnum();
+ pdf_begin_obj(fo->cw_objnum, 1);
+ avl_t_init(&t, fo->tx_tree);
+ fip = (int *) avl_t_first(&t, fo->tx_tree);
+ assert(fip != NULL);
+ pdf_puts("[");
+ for (ip = fip, j = *ip; ip != NULL; ip = (int *) avl_t_next(&t)) {
+ if (ip != fip)
+ pdf_puts(" ");
+ i = *ip;
+ while (j < i - 1) {
+ pdf_puts("0 ");
+ j++;
+ }
+ j = i;
+ width = divide_scaled(char_width(f, i), pdf_font_size(f), 4);
+ pdf_printf("%i", (int) width / 10); /* see adv_char_width() in pdftex.web */
+ if ((width = width % 10) != 0)
+ pdf_printf(".%i", width);
+ }
+ pdf_puts("]\n");
+ pdf_end_obj();
+}
+
+/**********************************************************************/
+/*
+ * 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_cidkeyed(fd->fm)) {
+ if (is_opentype(fd->fm))
+ writetype0(fd);
+ else if (is_truetype(fd->fm))
+ writetype2(fd);
+ else if (is_type1(fd->fm))
+ writetype1w(fd);
+ else
+ assert(0);
+ } else {
+ if (is_type1(fd->fm))
+#ifdef DO_TYPE1C
+ writet1c(fd);
+#else
+ writet1(fd);
+#endif
+ 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 = pdf_new_objnum();
+ pdf_begin_dict(fd->ff_objnum, 0); /* font file stream */
+ if (is_cidkeyed(fd->fm)) {
+ /* No subtype is used for TrueType-based OpenType fonts */
+ if (is_opentype(fd->fm) || is_type1(fd->fm))
+ pdf_puts("/Subtype /CIDFontType0C\n");
+ /* else
+ pdf_puts("/Subtype /OpenType\n");*/
+ } else {
+ 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);
+ }
+ pdf_begin_stream();
+ fb_flush();
+ pdf_end_stream();
+}
+
+/**********************************************************************/
+
+static void write_fontdescriptor(fd_entry * fd)
+{
+ char *glyph;
+ struct avl_traverser t;
+ 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 = pdf_new_objnum();
+ pdf_begin_dict(fd->fd_objnum, 1);
+ pdf_puts("/Type /FontDescriptor\n");
+ write_fontname(fd, "FontName");
+ if (!fd->ff_found && fd->fm->fd_flags == 4)
+ pdf_puts("/Flags 34\n"); /* assumes a roman sans serif font */
+ else
+ pdf_printf("/Flags %i\n", (int) fd->fm->fd_flags);
+ write_fontmetrics(fd);
+ if (is_cidkeyed(fd->fm)) {
+ if (is_type1(fd->fm))
+ pdf_printf("/FontFile3 %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);
+ } else {
+ 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);
+ }
+ }
+ /* TODO: Optional keys for CID fonts.
+
+ The most interesting ones are
+ /Style << /Panose <12-byte string>>>
+ and
+ /CIDSET <stream>
+ the latter can be used in subsets, to give the included CIDs
+ as a bitmap on the whole list.
+ */
+ pdf_end_dict();
+}
+
+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 (fixed_gen_tounicode > 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);
+ }
+ }
+
+ pdf_begin_dict(fo->fo_objnum, 1);
+ pdf_puts("/Type /Font\n");
+ pdf_puts("/Subtype /");
+ if (is_type1(fo->fm))
+#ifdef DO_TYPE1C
+ pdf_printf("%s\n", "Type1C");
+#else
+ pdf_printf("%s\n", "Type1");
+#endif
+ 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_objnum != 0);
+ pdf_printf("/FirstChar %i\n/LastChar %i\n/Widths %i 0 R\n",
+ (int) fo->first_char, (int) fo->last_char,
+ (int) fo->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 (pdf_font_attr(fo->tex_font) != get_nullstr()) {
+ pdf_print(pdf_font_attr(fo->tex_font));
+ pdf_puts("\n");
+ }
+ pdf_end_dict();
+}
+
+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
+ * @<Output fonts definition@>= in pdftex.web.
+ */
+
+void write_fontstuff()
+{
+ 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 = pdf_new_objnum(); /* 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);
+ }
+ }
+ fo->tx_tree = mark_chars(fo, fo->tx_tree, f); /* for write_charwidth_array() */
+ write_charwidth_array(fo, 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);
+ 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_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 do_pdf_font(integer font_objnum, internalfontnumber f)
+{
+ fm_entry *fm;
+ /* This is not 100% true: CID is actually needed whenever (and
+ * only) there are more than 256 separate glyphs used. But for
+ * now, just assume the user knows what he is doing;
+ */
+ if (font_encodingbytes(f)==2) {
+ /* Create a virtual font map entry, as this is needed by the
+ * rest of the font inclusion mechanism.
+ */
+ fm = new_fm_entry();
+ fm->tfm_name = font_name(f); /* or whatever, not a real tfm */
+ fm->ff_name = font_filename(f); /* the actual file */
+ fm->encname = font_encodingname(f); /* for the CIDSystemInfo */
+ fm->ps_name = font_fullname(f); /* the true name */
+ fm->slant = font_slant(f); /* slant factor */
+ fm->extend = font_extend(f); /* extension factor */
+ fm->fd_flags = 4; /* can perhaps be done better */
+ fm->in_use = true;
+
+ switch (font_format(f)) {
+ case opentype_format: set_opentype(fm); break;
+ case truetype_format: set_truetype(fm); break;
+ case type1_format: set_type1(fm); break;
+ default:
+ pdftex_fail("writefont.c: The file format (%s) for font `%s' is incompatible with wide characters\n",
+ font_format_name(f),font_name(f));
+ }
+ /* This makes "unknown" default to subsetted inclusion */
+ if (font_embedding(f)!=no_embedding) {
+ set_included(fm);
+ if (font_embedding(f)!=full_embedding) {
+ set_subsetted(fm);
+ }
+ }
+ set_cidkeyed(fm);
+ create_cid_fontdictionary(fm, font_objnum, f);
+
+ } else {
+ fm = hasfmentry(f) ? (fm_entry *) font_map(f) : NULL;
+ if (fm == NULL || (fm->ps_name == NULL && fm->ff_name == NULL))
+ writet3(font_objnum, f);
+ else
+ create_fontdictionary(fm, font_objnum, f);
+ }
+}
+
+/**********************************************************************/
+
+
+/*
+ The glyph width is included in |glw_entry|, because that width
+ depends on the value it has in the font where it is actually
+ typeset from, not the font that is the 'owner' of the fd entry.
+
+ TODO: It is possible that the user messes with the metric width,
+ but handling that properly would require access to the 'hmtx' table
+ at this point in the program.
+*/
+
+int comp_glw_entry(const void *pa, const void *pb, void *p)
+{
+ unsigned short i, j;
+ i = (*(glw_entry *)pa).id;
+ j = (*(glw_entry *)pb).id;
+ cmp_return(i,j);
+ return 0;
+}
+
+void create_cid_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_glw_entry, NULL, &avl_xallocator);
+ assert(fo->fd->gl_tree != NULL);
+}
+
+/*
+ The values |font_bc()| and |font_ec()| are potentially large
+ character ids, but the strings that are written out use CID
+ indexes, and those are limited to 16-bit values.
+*/
+
+static void mark_cid_subset_glyphs(fo_entry *fo, internal_font_number f)
+{
+ int i, k;
+ glw_entry *j;
+ void *aa;
+ for (k = 1; k <= max_font_id(); k++) {
+ if ( k == f || -f == pdf_font_num(k)) {
+ for (i = font_bc(k); i <= font_ec(k); i++) {
+ if (char_exists(k,i) && char_used(k,i)) {
+ j = xtalloc(1,glw_entry);
+ j->id = char_index(k,i);
+ j->wd = divide_scaled_n(char_width(k, i), pdf_font_size(k), 10000.0);
+ if ((glw_entry *)avl_find(fo->fd->gl_tree,j) == NULL) {
+ aa = avl_probe(fo->fd->gl_tree, j);
+ assert(aa != NULL);
+ }
+ }
+ }
+ }
+ }
+}
+
+/*
+ It is possible to compress the widths array even better, by using the
+ alternate 'range' syntax and possibly even using /DW to set
+ a default value.
+
+ There is a some optimization here already: glyphs that are
+ not used do not appear in the widths array at all.
+
+ We have to make sure that we do not output an (incorrect!)
+ width for a character that exists in the font, but is not used
+ in typesetting. An enormous negative width is used as sentinel value
+*/
+
+
+static void write_cid_charwidth_array(fo_entry * fo)
+{
+ int i, j;
+ glw_entry *glyph;
+ struct avl_traverser t;
+
+ assert(fo->cw_objnum == 0);
+ fo->cw_objnum = pdf_new_objnum();
+ pdf_begin_obj(fo->cw_objnum, 1);
+ avl_t_init(&t, fo->fd->gl_tree);
+ glyph = (glw_entry *) avl_t_first(&t, fo->fd->gl_tree);
+ assert(glyph != NULL);
+ i = glyph->id;
+ pdf_printf("[ %i [", i);
+ for (; glyph != NULL; glyph = (glw_entry *) avl_t_next(&t)) {
+ j = glyph->wd;
+ if (glyph->id>(i+1)) {
+ pdf_printf("] %i [", glyph->id);
+ j = glyph->wd;
+ }
+ if (glyph->id==(i+1))
+ pdf_puts(" ");
+ pdf_printf("%i", (j/10));
+ if ((j % 10) != 0)
+ pdf_printf(".%i", (j % 10));
+ i = glyph->id;
+ }
+ pdf_puts("]]\n");
+ pdf_end_obj();
+}
+
+
+void create_cid_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;
+ create_cid_fontdescriptor (fo, f);
+ mark_cid_subset_glyphs (fo,f);
+ if (is_subsetted(fo->fm)) {
+ /*
+ this is a bit sneaky. |make_subset_tag()| actually expects the glyph tree
+ to contain strings instead of |glw_entry| items. However, all calculations
+ are done using explicit typecasts, so it works out ok.
+ */
+ make_subset_tag(fo->fd);
+ }
+ write_cid_charwidth_array(fo);
+ write_fontdescriptor(fo->fd);
+
+ write_cid_fontdictionary(fo,f);
+}
+
+void write_cid_fontdictionary(fo_entry * fo, internalfontnumber f)
+{
+ int i;
+
+ fo->tounicode_objnum = write_cid_tounicode(fo,f);
+
+ pdf_begin_dict(fo->fo_objnum, 1);
+ pdf_puts("/Type /Font\n");
+ pdf_puts("/Subtype /Type0\n");
+ pdf_puts("/Encoding /Identity-H\n");
+ write_fontname(fo->fd, "BaseFont");
+ i = pdf_new_objnum();
+ pdf_printf("/DescendantFonts [%i 0 R]\n", i);
+ /* todo: the ToUnicode CMap */
+ if (fo->tounicode_objnum != 0)
+ pdf_printf("/ToUnicode %i 0 R\n", (int) fo->tounicode_objnum);
+
+ pdf_end_dict();
+
+ pdf_begin_dict(i, 1);
+ pdf_puts("/Type /Font\n");
+ if (is_opentype(fo->fm) || is_type1(fo->fm)) {
+ pdf_puts("/Subtype /CIDFontType0\n");
+ } else {
+ pdf_puts("/Subtype /CIDFontType2\n");
+ pdf_printf("/CIDToGIDMap /Identity\n");
+ }
+ write_fontname(fo->fd, "BaseFont");
+ pdf_printf("/FontDescriptor %i 0 R\n", (int) fo->fd->fd_objnum);
+ pdf_printf("/W %i 0 R\n",(int) fo->cw_objnum);
+ pdf_printf("/CIDSystemInfo <<\n");
+ pdf_printf("/Registry (%s)\n", (font_cidregistry(f)? font_cidregistry(f): "Adobe"));
+ pdf_printf("/Ordering (%s)\n",(font_cidordering(f)? font_cidordering(f) : "Identity")) ;
+ pdf_printf("/Supplement %u\n",(unsigned int)font_cidsupplement(f));
+ pdf_printf(">>\n");
+
+ /* I doubt there is anything useful that could be written here */
+ /*
+ if (pdf_font_attr(fo->tex_font) != get_nullstr()) {
+ pdf_print(pdf_font_attr(fo->tex_font));
+ pdf_puts("\n");
+ }
+ */
+ pdf_end_dict();
+
+}
+