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/*
Copyright 1996-2014 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ptexlib.h"
/**********************************************************************/
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 */
static 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 */
static 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, const 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);
}
static 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);
}
static 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.
*/
static 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.
*/
static 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;
}
/**********************************************************************/
static 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;
}
}
static 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.
*/
static 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);
}
static 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();
}
static void write_fontdescriptors(void)
{
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);
}
/**********************************************************************/
static 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 */
assert(fo->tex_font != 0);
/* write ToUnicode entry if needed */
if ((fixedgentounicode > 0 && fo->fd != NULL
&& !pdffontnobuiltintounicode[fo->tex_font])
|| (fo->fd != NULL && fo->fm->tfm_name != NULL
&& strcmp(fo->fm->tfm_name, "dummy-space")) == 0) {
if (fo->fe != NULL) {
fo->tounicode_objnum =
write_tounicode(fo->fe->glyph_names, fo->fm->tfm_name, 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, NULL);
}
}
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();
}
static void write_fontdictionaries(void)
{
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 writefontstuff(void)
{
write_fontdescriptors();
write_fontencodings(); /* see writeenc.c */
write_fontdictionaries();
}
/**********************************************************************/
static 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
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