/
pdffont.c
1091 lines (926 loc) · 29.3 KB
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pdffont.c
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/* This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2002-2021 by Jin-Hwan Cho, Matthias Franz, and Shunsaku Hirata,
the dvipdfmx project team.
Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include "system.h"
#include "error.h"
#include "mem.h"
#include "dpxconf.h"
#include "dpxfile.h"
#include "dpxutil.h"
#include "pdfobj.h"
#include "agl.h"
#include "pdfencoding.h"
#include "cmap.h"
#include "unicode.h"
#include "type1.h"
#include "type1c.h"
#include "truetype.h"
#include "pkfont.h"
#include "cidtype0.h"
#include "type0.h"
#include "tt_cmap.h"
#include "pdffont.h"
#define MREC_HAS_TOUNICODE(m) ((m) && (m)->opt.tounicode)
void
pdf_font_set_dpi (int font_dpi)
{
PKFont_set_dpi(font_dpi);
}
void
pdf_font_make_uniqueTag (char *tag)
{
int i;
char ch;
for (i = 0; i < 6; i++) {
ch = rand() % 26;
tag[i] = ch + 'A';
}
tag[6] = '\0';
}
static void
init_CIDSysInfo (CIDSysInfo *csi) {
csi->registry = NULL;
csi->ordering = NULL;
csi->supplement = 0;
}
static void
pdf_init_font_struct (pdf_font *font)
{
ASSERT(font);
font->ident = NULL;
font->filename = NULL;
font->subtype = -1;
font->font_id = -1;
font->fontname = NULL;
memset(font->uniqueID, 0, 7);
font->index = 0;
font->encoding_id = -1;
font->reference = NULL;
font->resource = NULL;
font->descriptor = NULL;
font->point_size = 0;
font->design_size = 0;
font->usedchars = NULL;
font->flags = 0;
font->type0.descendant = -1;
font->type0.wmode = 0;
init_CIDSysInfo(&font->cid.csi);
font->cid.need_vmetrics = 0;
font->cid.usedchars_v = NULL;
font->cid.options.embed = 0;
font->cid.options.style = FONT_STYLE_NONE;
font->cid.options.stemv = 0;
init_CIDSysInfo(&font->cid.options.csi);
return;
}
static void
pdf_flush_font (pdf_font *font)
{
char *fontname, *uniqueTag;
if (!font)
return;
if ((font->flags & PDF_FONT_FLAG_IS_ALIAS) || (font->flags & PDF_FONT_FLAG_IS_REENCODE)) {
return;
}
if (font->resource && font->reference) {
switch (font->subtype) {
case PDF_FONT_FONTTYPE_TYPE3:
case PDF_FONT_FONTTYPE_TYPE0:
break;
case PDF_FONT_FONTTYPE_CIDTYPE0:
case PDF_FONT_FONTTYPE_CIDTYPE2:
break;
default:
if (font->flags & PDF_FONT_FLAG_NOEMBED) {
pdf_add_dict(font->resource, pdf_new_name("BaseFont"), pdf_new_name(font->fontname));
if (font->descriptor) {
pdf_add_dict(font->descriptor, pdf_new_name("FontName"), pdf_new_name(font->fontname));
}
} else {
ASSERT(font->fontname);
fontname = NEW(7+strlen(font->fontname)+1, char);
uniqueTag = pdf_font_get_uniqueTag(font);
sprintf(fontname, "%6s+%s", uniqueTag, font->fontname);
pdf_add_dict(font->resource, pdf_new_name("BaseFont"), pdf_new_name(fontname));
if (font->descriptor) {
pdf_add_dict(font->descriptor, pdf_new_name("FontName"), pdf_new_name(fontname));
}
RELEASE(fontname);
}
if (font->descriptor) {
pdf_add_dict(font->resource, pdf_new_name("FontDescriptor"), pdf_ref_obj(font->descriptor));
}
}
}
if (font->resource)
pdf_release_obj(font->resource);
if (font->descriptor)
pdf_release_obj(font->descriptor);
if (font->reference)
pdf_release_obj(font->reference);
font->reference = NULL;
font->resource = NULL;
font->descriptor = NULL;
return;
}
static void
pdf_clean_font_struct (pdf_font *font)
{
if (!font)
return;
if (font->resource)
WARN("font \"%s\" not properly released?", font->ident);
if (font->ident)
RELEASE(font->ident);
if (font->filename)
RELEASE(font->filename);
if (font->fontname)
RELEASE(font->fontname);
if (font->usedchars) {
if (!(font->flags & PDF_FONT_FLAG_USEDCHAR_SHARED))
RELEASE(font->usedchars);
}
if (font->cid.csi.registry)
RELEASE(font->cid.csi.registry);
if (font->cid.csi.ordering)
RELEASE(font->cid.csi.ordering);
if (font->cid.options.csi.registry)
RELEASE(font->cid.options.csi.registry);
if (font->cid.options.csi.ordering)
RELEASE(font->cid.options.csi.ordering);
if (font->cid.usedchars_v)
RELEASE(font->cid.usedchars_v);
font->ident = NULL;
font->filename = NULL;
font->fontname = NULL;
font->usedchars = NULL;
font->cid.csi.registry = NULL;
font->cid.csi.ordering = NULL;
font->cid.options.csi.registry = NULL;
font->cid.options.csi.ordering = NULL;
font->cid.usedchars_v = NULL;
return;
}
#define CACHE_ALLOC_SIZE 16u
static struct {
int count;
int capacity;
pdf_font *fonts;
} font_cache = {
0, 0, NULL
};
void
pdf_init_fonts (void)
{
ASSERT(font_cache.fonts == NULL);
agl_init_map();
CMap_cache_init();
pdf_init_encodings();
font_cache.count = 0;
font_cache.capacity = CACHE_ALLOC_SIZE;
font_cache.fonts = NEW(font_cache.capacity, pdf_font);
{
time_t current_time;
current_time = dpx_util_get_unique_time_if_given();
if (current_time == INVALID_EPOCH_VALUE)
current_time = time(NULL);
srand(current_time);
}
}
#define CHECK_ID(n) do {\
if ((n) < 0 || (n) >= font_cache.count) {\
ERROR("Invalid font ID: %d", (n));\
}\
} while (0)
static pdf_font *
GET_FONT (int font_id)
{
pdf_font *font = NULL;
if (font_id >= 0 && font_id < font_cache.count) {
font = &font_cache.fonts[font_id];
if (font->flags & PDF_FONT_FLAG_IS_ALIAS) {
font = &font_cache.fonts[font->font_id];
}
}
return font;
}
pdf_font *
pdf_get_font_data (int font_id)
{
CHECK_ID(font_id);
return &font_cache.fonts[font_id];
}
char *
pdf_get_font_ident (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = &font_cache.fonts[font_id];
return font->ident;
}
pdf_obj *
pdf_get_font_reference (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font = GET_FONT(font->font_id);
}
if (!font->reference) {
font->reference = pdf_ref_obj(pdf_font_get_resource(font));
}
if (font->subtype == PDF_FONT_FONTTYPE_TYPE0) {
if (!pdf_lookup_dict(font->resource, "DescendantFonts")) {
pdf_obj *array;
array = pdf_new_array();
pdf_add_array(array, pdf_get_font_reference(font->type0.descendant));
pdf_add_dict(font->resource, pdf_new_name("DescendantFonts"), array);
}
}
return pdf_link_obj(font->reference);
}
pdf_obj *
pdf_get_font_resource (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font = GET_FONT(font->font_id);
}
if (!font->resource)
font->resource = pdf_new_dict();
return font->resource; /* FIXME */
}
char *
pdf_get_font_usedchars (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font = GET_FONT(font->font_id);
}
if (font->subtype != PDF_FONT_FONTTYPE_TYPE0) {
if (!font->usedchars) {
font->usedchars = NEW(256, char);
memset(font->usedchars, 0, 256 * sizeof(char));
}
}
return font->usedchars;
}
int
pdf_get_font_wmode (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font = GET_FONT(font->font_id);
}
if (font->subtype == PDF_FONT_FONTTYPE_TYPE0) {
return font->type0.wmode;
} else {
return 0;
}
}
int
pdf_get_font_subtype (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font = GET_FONT(font->font_id);
}
return font->subtype;
}
int
pdf_get_font_encoding (int font_id)
{
pdf_font *font;
CHECK_ID(font_id);
font = GET_FONT(font_id);
return font->encoding_id;
}
int
pdf_font_resource_name (int font_id, char *buff)
{
int len;
pdf_font *font;
CHECK_ID(font_id);
font = &font_cache.fonts[font_id];
if (font->flags & PDF_FONT_FLAG_IS_ALIAS) {
font_id = font->font_id;
}
font = GET_FONT(font_id);
if (font->flags & PDF_FONT_FLAG_IS_REENCODE) {
font_id = font->font_id;
}
len = sprintf(buff, "F%d", font_id);
return len;
}
/* The rule for ToUnicode creation is:
*
* If "tounicode" option is specified in fontmap, use that.
* If there is ToUnicode CMap with same name as TFM, use that.
* If no "tounicode" option is used and no ToUnicode CMap with
* same name as TFM is found, create ToUnicode CMap from glyph
* names and AGL file.
*/
static int
try_load_ToUnicode_CMap (pdf_font *font)
{
pdf_obj *tounicode;
const char *cmap_name = NULL;
fontmap_rec *mrec = NULL; /* Be sure fontmap is still alive here */
ASSERT(font);
/* We are using different encoding for Type0 font.
* This feature is unavailable for them.
*/
if (font->subtype == PDF_FONT_FONTTYPE_TYPE0)
return 0;
ASSERT(font->ident);
mrec = pdf_lookup_fontmap_record(font->ident);
if (MREC_HAS_TOUNICODE(mrec)) {
cmap_name = mrec->opt.tounicode;
} else {
cmap_name = font->ident;
}
tounicode = pdf_load_ToUnicode_stream(cmap_name);
if (!tounicode) {
if (MREC_HAS_TOUNICODE(mrec)) {
WARN("Failed to read ToUnicode mapping \"%s\"...", mrec->opt.tounicode);
}
} else {
if (pdf_obj_typeof(tounicode) != PDF_STREAM) {
ERROR("Object returned by pdf_load_ToUnicode_stream() not stream object! (This must be bug)");
} else if (pdf_stream_length(tounicode) > 0) {
pdf_obj *fontdict = pdf_font_get_resource(font);
pdf_add_dict(fontdict,
pdf_new_name("ToUnicode"),
pdf_ref_obj (tounicode)); /* _FIXME_ */
if (dpx_conf.verbose_level > 0)
MESG("pdf_font>> ToUnicode CMap \"%s\" attached to font id=\"%s\".\n",
cmap_name, font->ident);
}
pdf_release_obj(tounicode);
}
return 0;
}
void
pdf_close_fonts (void)
{
int font_id;
for (font_id = 0; font_id < font_cache.count; font_id++) {
pdf_font *font;
font = &font_cache.fonts[font_id];
if ((font->flags & PDF_FONT_FLAG_IS_ALIAS) ||
(font->flags & PDF_FONT_FLAG_IS_REENCODE) ||
!font->reference) {
continue;
}
if (font->subtype == PDF_FONT_FONTTYPE_CIDTYPE0 ||
font->subtype == PDF_FONT_FONTTYPE_CIDTYPE2) {
continue;
}
if (dpx_conf.verbose_level > 0) {
if (font->subtype != PDF_FONT_FONTTYPE_TYPE0) {
MESG("(%s", font->filename);
if (dpx_conf.verbose_level > 2 &&
!(font->flags & PDF_FONT_FLAG_NOEMBED)) {
MESG("[%s+%s]", pdf_font_get_uniqueTag(font), font->fontname);
} else if (dpx_conf.verbose_level > 1) {
MESG("[%s]", font->fontname);
}
if (dpx_conf.verbose_level > 1) {
if (font->encoding_id >= 0) {
MESG("[%s]", pdf_encoding_get_name(font->encoding_id));
} else {
MESG("[built-in]");
}
}
}
}
/* Must come before load_xxx */
try_load_ToUnicode_CMap(font);
switch (font->subtype) {
case PDF_FONT_FONTTYPE_TYPE1:
if (dpx_conf.verbose_level > 0)
MESG("[Type1]");
if (!(font->flags & PDF_FONT_FLAG_BASEFONT))
pdf_font_load_type1(font);
break;
case PDF_FONT_FONTTYPE_TYPE1C:
if (dpx_conf.verbose_level > 0)
MESG("[Type1C]");
pdf_font_load_type1c(font);
break;
case PDF_FONT_FONTTYPE_TRUETYPE:
if (dpx_conf.verbose_level > 0)
MESG("[TrueType]");
pdf_font_load_truetype(font);
break;
case PDF_FONT_FONTTYPE_TYPE3:
if (dpx_conf.verbose_level > 0)
MESG("[Type3/PK]");
pdf_font_load_pkfont (font);
break;
case PDF_FONT_FONTTYPE_TYPE0:
if (dpx_conf.verbose_level > 0)
MESG("[Type0]");
pdf_font_load_type0(font);
break;
}
if (font->encoding_id >= 0) {
if (font->subtype != PDF_FONT_FONTTYPE_TYPE0) {
pdf_encoding_add_usedchars(font->encoding_id, font->usedchars);
}
}
if (dpx_conf.verbose_level > 0) {
if (font->subtype != PDF_FONT_FONTTYPE_TYPE0) {
MESG(")");
}
}
}
pdf_encoding_complete();
/* Order is important... */
for (font_id = 0; font_id < font_cache.count; font_id++) {
pdf_font *font = &font_cache.fonts[font_id];
if ((font->flags & PDF_FONT_FLAG_IS_ALIAS) ||
(font->flags & PDF_FONT_FLAG_IS_REENCODE) ||
!font->reference) {
continue;
}
switch (font->subtype) {
case PDF_FONT_FONTTYPE_CIDTYPE0:
case PDF_FONT_FONTTYPE_CIDTYPE2:
pdf_font_load_cidfont(font);
break;
}
}
for (font_id = 0; font_id < font_cache.count; font_id++) {
pdf_font *font;
font = &font_cache.fonts[font_id];
if ((font->flags & PDF_FONT_FLAG_IS_ALIAS) ||
(font->flags & PDF_FONT_FLAG_IS_REENCODE) ||
!font->reference) {
pdf_clean_font_struct(font);
continue;
}
if (font->encoding_id >= 0 &&
font->subtype != PDF_FONT_FONTTYPE_TYPE0 &&
font->subtype != PDF_FONT_FONTTYPE_CIDTYPE0 &&
font->subtype != PDF_FONT_FONTTYPE_CIDTYPE2) {
pdf_obj *enc_obj = pdf_get_encoding_obj(font->encoding_id);
pdf_obj *tounicode;
/* Predefined encodings (and those simplified to them) are embedded
* as direct objects, but this is purely a matter of taste.
*/
if (enc_obj) {
if (font->subtype == PDF_FONT_FONTTYPE_TRUETYPE) {
if (pdf_encoding_is_predefined(font->encoding_id) && PDF_OBJ_NAMETYPE(enc_obj)) {
pdf_add_dict(font->resource,
pdf_new_name("Encoding"), pdf_link_obj(enc_obj));
}
} else {
pdf_add_dict(font->resource,
pdf_new_name("Encoding"),
PDF_OBJ_NAMETYPE(enc_obj) ? pdf_link_obj(enc_obj) : pdf_ref_obj(enc_obj));
}
}
/* For built-in encoding, each font loader create ToUnicode CMap. */
if (!pdf_lookup_dict(font->resource, "ToUnicode")) {
tounicode = pdf_encoding_get_tounicode(font->encoding_id);
if (tounicode) {
pdf_add_dict(font->resource,
pdf_new_name("ToUnicode"), pdf_ref_obj(tounicode));
}
}
} else if (font->subtype == PDF_FONT_FONTTYPE_TRUETYPE) {
/* encoding_id < 0 means MacRoman here (but not really)
* We use MacRoman as "default" encoding. */
pdf_add_dict(font->resource,
pdf_new_name("Encoding"),
pdf_new_name("MacRomanEncoding"));
}
pdf_flush_font(font);
pdf_clean_font_struct(font);
}
RELEASE(font_cache.fonts);
font_cache.fonts = NULL;
font_cache.count = 0;
font_cache.capacity = 0;
CMap_cache_close();
pdf_close_encodings();
agl_close_map (); /* After encoding */
return;
}
int
pdf_font_findresource (const char *ident, double scale)
{
int font_id, found = 0;
for (font_id = 0; font_id < font_cache.count; font_id++) {
pdf_font *font;
font = &font_cache.fonts[font_id];
switch (font->subtype) {
case PDF_FONT_FONTTYPE_TYPE1:
case PDF_FONT_FONTTYPE_TYPE1C:
case PDF_FONT_FONTTYPE_TRUETYPE:
case PDF_FONT_FONTTYPE_TYPE0:
if (!strcmp(ident, font->ident)) {
found = 1;
}
break;
case PDF_FONT_FONTTYPE_TYPE3:
/* There shouldn't be any encoding specified for PK font.
* It must be always font's build-in encoding.
*
* TODO: a PK font with two encodings makes no sense. Change?
*/
if (!strcmp(ident, font->ident) && scale == font->point_size) {
found = 1;
}
break;
}
if (found) {
if (dpx_conf.verbose_level > 0) {
MESG("\npdf_font>> Font \"%s\" (enc_id=%d) found at id=%d.\n", font->ident, font->encoding_id, font_id);
}
break;
}
}
return found ? font_id : -1;
}
static int
create_font_alias (const char *ident, int font_id)
{
int this_id;
pdf_font *font, *src;
if (font_id < 0 || font_id >= font_cache.count)
return -1;
src = &font_cache.fonts[font_id];
this_id = font_cache.count;
if (font_cache.count >= font_cache.capacity) {
font_cache.capacity += CACHE_ALLOC_SIZE;
font_cache.fonts = RENEW(font_cache.fonts, font_cache.capacity, pdf_font);
}
font = &font_cache.fonts[this_id];
pdf_init_font_struct(font);
font->ident = NEW(strlen(ident) + 1, char);
strcpy(font->ident, ident);
font->font_id = font_id;
font->subtype = src->subtype;
font->encoding_id = src->encoding_id;
font->flags |= PDF_FONT_FLAG_IS_ALIAS;
font_cache.count++;
return this_id;
}
static int
create_font_reencoded (const char *ident, int font_id, int cmap_id)
{
int this_id;
pdf_font *font;
if (font_cache.count + 1 >= font_cache.capacity) {
font_cache.capacity += CACHE_ALLOC_SIZE;
font_cache.fonts = RENEW(font_cache.fonts, font_cache.capacity, pdf_font);
}
this_id = font_cache.count;
font = &font_cache.fonts[this_id];
pdf_init_font_struct(font);
font->ident = NEW(strlen(ident) + 1, char);
strcpy(font->ident, ident);
font->font_id = font_id;
font->subtype = PDF_FONT_FONTTYPE_TYPE0;
font->encoding_id = cmap_id;
font->flags |= PDF_FONT_FLAG_IS_REENCODE;
font->flags |= PDF_FONT_FLAG_USEDCHAR_SHARED;
font_cache.count++;
return this_id;
}
int
pdf_font_load_font (const char *ident, double font_scale, const fontmap_rec *mrec)
{
int font_id = -1;
pdf_font *font;
int encoding_id = -1, cmap_id = -1;
const char *fontname;
/*
* Get appropriate info from map file. (PK fonts at two different
* point sizes would be looked up twice unecessarily.)
*/
fontname = mrec ? mrec->font_name : ident;
/* XeTeX specific...
* First try loading GID-to-CID mapping from CFF CID-keyed OpenType font.
* There was a serious bug in xdv support... It was implemented with the wrong
* assumption that CID always equals to GID.
* TODO: There is a possibility that GID-to-CID mapping is not one-to-one.
* Use internal glyph ordering rather than map GID to CIDs.
*/
if (mrec && mrec->opt.use_glyph_encoding) {
int wmode = 0;
/* Should be always Identity-H or Identity-V for XeTeX output. */
if (mrec->enc_name) {
if (!strcmp(mrec->enc_name, "Identity-V"))
wmode = 1;
else if (!strcmp(mrec->enc_name, "Identity-H"))
wmode = 0;
else {
WARN("Unexpected encoding specified for xdv: %s", mrec->enc_name);
}
/* cmap_id < 0 is returned if ...
* Font is not a CFF font
* GID to CID mapping is identity mapping
*
* TODO: fontmap record still has Identity CMap assigned but actually different CMap
* can be attached to the font here. Should we fix mrec->enc_name here?
*/
cmap_id = otf_try_load_GID_to_CID_map(mrec->font_name, mrec->opt.index, wmode);
}
}
if (cmap_id < 0 && mrec && mrec->enc_name) {
if (!strcmp(mrec->enc_name, "unicode")) {
cmap_id = otf_load_Unicode_CMap(mrec->font_name,
mrec->opt.index, mrec->opt.otl_tags,
((mrec->opt.flags & FONTMAP_OPT_VERT) ? 1 : 0));
if (cmap_id < 0) {
cmap_id = t1_load_UnicodeCMap(mrec->font_name, mrec->opt.otl_tags,
((mrec->opt.flags & FONTMAP_OPT_VERT) ? 1 : 0));
}
} else if (!strstr(mrec->enc_name, ".enc") || strstr(mrec->enc_name, ".cmap")) {
cmap_id = CMap_cache_find(mrec->enc_name);
}
if (cmap_id < 0) {
encoding_id = pdf_encoding_findresource(mrec->enc_name);
}
}
if (mrec && mrec->enc_name) {
if (cmap_id < 0 && encoding_id < 0) {
WARN("Could not read encoding file: %s", mrec->enc_name);
return -1;
}
}
if (mrec && cmap_id >= 0) {
/* Composite font */
CMap *cmap;
CIDSysInfo *csi;
int wmode, cid_id;
cmap = CMap_cache_get(cmap_id);
csi = CMap_is_Identity(cmap) ? NULL : CMap_get_CIDSysInfo(cmap);
wmode = CMap_get_wmode(cmap);
cid_id = pdf_font_cidfont_lookup_cache(font_cache.fonts, font_cache.count, mrec->font_name, csi, &mrec->opt);
if (cid_id >= 0) {
for (font_id = 0; font_id < font_cache.count; font_id++) {
font = &font_cache.fonts[font_id];
if (font->subtype != PDF_FONT_FONTTYPE_TYPE0)
continue;
if (font->type0.wmode == wmode && font->type0.descendant == cid_id) {
break;
}
}
if (font_id >= 0 && font_id < font_cache.count) {
font = &font_cache.fonts[font_id];
if (font->encoding_id == cmap_id) {
if (dpx_conf.verbose_level > 0) {
MESG("\npdf_font>> Type0 font \"%s\" cmap_id=<%s,%d> found at font_id=<%s,%d>.\n",
mrec->font_name, mrec->enc_name, cmap_id, pdf_get_font_ident(font_id), font_id);
}
if (!strcmp(ident, font->ident)) {
return font_id;
} else {
return create_font_alias(ident, font_id);
}
} else {
if (dpx_conf.verbose_level > 0) {
MESG("\npdf_font>> Type0 font \"%s\" cmap_id=<%s,%d> found at font_id=<%s,%d>. (re-encoded)\n",
mrec->font_name, mrec->enc_name, cmap_id, pdf_get_font_ident(font_id), font_id);
}
return create_font_reencoded(ident, font_id, cmap_id);
}
}
}
/* plus one for CIDFont */
if (font_cache.count + 1 >= font_cache.capacity) {
font_cache.capacity += CACHE_ALLOC_SIZE;
font_cache.fonts = RENEW(font_cache.fonts, font_cache.capacity, pdf_font);
}
if (cid_id < 0) {
pdf_font *cidfont;
cid_id = font_cache.count;
cidfont = &font_cache.fonts[cid_id];
pdf_init_font_struct(cidfont);
if (pdf_font_open_cidfont(cidfont, fontname, csi, &mrec->opt) < 0) {
pdf_clean_font_struct(cidfont);
return -1;
}
font_cache.count++;
}
font_id = font_cache.count;
font = &font_cache.fonts[font_id];
pdf_init_font_struct(font);
if (pdf_font_open_type0(font, cid_id, wmode) < 0) {
pdf_clean_font_struct(font);
return -1;
}
font->ident = NEW(strlen(ident) + 1, char);
strcpy(font->ident, ident);
font->subtype = PDF_FONT_FONTTYPE_TYPE0;
font->encoding_id = cmap_id;
font_cache.count++;
if (dpx_conf.verbose_level > 0) {
MESG("\n");
MESG("pdf_font>> Type0 font \"%s\" ", fontname);
MESG("cmap_id=<%s,%d> ", mrec->enc_name, font->encoding_id);
MESG("font_id=<%s,%d>.", ident, font_id);
MESG("\n");
}
} else {
/* Simple Font - always embed. */
for (font_id = 0; font_id < font_cache.count; font_id++) {
font = &font_cache.fonts[font_id];
if (font->flags & PDF_FONT_FLAG_IS_ALIAS)
continue;
switch (font->subtype) {
case PDF_FONT_FONTTYPE_TYPE1:
case PDF_FONT_FONTTYPE_TYPE1C:
case PDF_FONT_FONTTYPE_TRUETYPE:
/* fontname here is font file name.
* We must compare both font file name and encoding
*
* TODO: Embed a font only once if it is used
* with two different encodings
*/
if (!strcmp(fontname, font->filename) && encoding_id == font->encoding_id &&
(!mrec || mrec->opt.index == font->index)) {
if (dpx_conf.verbose_level > 0) {
MESG("\npdf_font>> Simple font \"%s\" (enc_id=%d) found at id=%d.\n", fontname, encoding_id, font_id);
}
if (!strcmp(ident, font->ident)) {
return font_id;
} else {
return create_font_alias(ident, font_id);
}
}
break;
case PDF_FONT_FONTTYPE_TYPE3:
/* There shouldn't be any encoding specified for PK font.
* It must be always font's build-in encoding.
*
* TODO: a PK font with two encodings makes no sense. Change?
*/
if (!strcmp(fontname, font->filename) && font_scale == font->point_size) {
if (dpx_conf.verbose_level > 0) {
MESG("\npdf_font>> Simple font \"%s\" (enc_id=%d) found at id=%d.\n", fontname, encoding_id, font_id);
}
if (!strcmp(ident, font->ident)) {
return font_id;
} else {
return create_font_alias(ident, font_id);
}
}
break;
}
}
font_id = font_cache.count;
if (font_cache.count >= font_cache.capacity) {
font_cache.capacity += CACHE_ALLOC_SIZE;
font_cache.fonts = RENEW(font_cache.fonts, font_cache.capacity, pdf_font);
}
font = &font_cache.fonts[font_id];
pdf_init_font_struct(font);
font->ident = NEW(strlen(ident) + 1, char);
strcpy(font->ident, ident);
font->encoding_id = encoding_id;
font->filename = NEW(strlen(fontname) + 1, char);
font->point_size = font_scale;
strcpy(font->filename, fontname);
font->index = (mrec && mrec->opt.index) ? mrec->opt.index : 0;
font->flags |= (mrec && (mrec->opt.flags & FONTMAP_OPT_NOEMBED)) ? PDF_FONT_FLAG_NOEMBED : 0;
if (pdf_font_open_type1(font, font->filename, font->index, font->encoding_id, (font->flags & PDF_FONT_FLAG_NOEMBED) ? 0 : 1) >= 0) {
font->subtype = PDF_FONT_FONTTYPE_TYPE1;
} else if (pdf_font_open_type1c(font, font->filename, font->index, font->encoding_id, (font->flags & PDF_FONT_FLAG_NOEMBED) ? 0 : 1) >= 0) {
font->subtype = PDF_FONT_FONTTYPE_TYPE1C;
} else if (pdf_font_open_truetype(font, font->filename, font->index, font->encoding_id, (font->flags & PDF_FONT_FLAG_NOEMBED) ? 0 : 1) >= 0) {
font->subtype = PDF_FONT_FONTTYPE_TRUETYPE;
} else if (pdf_font_open_pkfont(font, font->filename, font->index, font->encoding_id, (font->flags & PDF_FONT_FLAG_NOEMBED) ? 0 : 1, font->point_size) >= 0) {
font->subtype = PDF_FONT_FONTTYPE_TYPE3;
} else {
pdf_clean_font_struct(font);
return -1;
}
font_cache.count++;
if (dpx_conf.verbose_level > 0) {
MESG("\n");
MESG("pdf_font>> Simple font \"%s\" ", fontname);
MESG("enc_id=<%s,%d> ", (mrec && mrec->enc_name) ? mrec->enc_name : "builtin", font->encoding_id);
MESG("font_id=<%s,%d>.", ident, font_id);
MESG("\n");
}
}
return font_id;
}
pdf_obj *
pdf_font_get_resource (pdf_font *font)
{
ASSERT(font);
if (!font->resource) {
font->resource = pdf_new_dict();
pdf_add_dict(font->resource, pdf_new_name("Type"), pdf_new_name("Font"));
switch (font->subtype) {
case PDF_FONT_FONTTYPE_TYPE1:
case PDF_FONT_FONTTYPE_TYPE1C: