Since Xft may only be available statically without shlib deps, check for
Tue Dec 19 22:47:16 2000 Owen Taylor <otaylor@redhat.com>
* configure.in pango-config.in pangoxft.pc.in
modules/basic/Makefile.am: Since Xft may only be available
statically without shlib deps, check for FreeType libs explicitly
and include them when linking, otherwise things won't work. Also,
define FREETYPE_CFLAGS from freetype-config --cflags.
* modules/basic/basic-xft.c pango/pangoxft-font{,map}.c: Fool
Xft into not converting glyph indices by loading the
face unencoded then calling FT_Set_Charmap ourselves.
* pango/Makefile.am pango/pango-ot.h pango/opentype/* :Add start
of opentype handling - most of the actually meat of the code here
is the OpenType layout code from FreeType 1 ported to freetype2
and adapted slighlty for our purposes. Also, includes a
incomplete OpenType-table-dumping code useful for figuring
out what is going on.
* pango/pangoxft.h pango/pangoxft-font.h: Add calls for
getting FT_Face and PangoOTInfo from PangoXftFont.
* modules/arabic/{Makefile.am,arabic-ot.[ch],arabic-xft.c}:
Initial support for rendering Arabic with OpenType fonts.
This commit is contained in:
Owen Taylor
Owen Taylor
commit
80a1582913
8
src/.cvsignore
Normal file
8
src/.cvsignore
Normal file
@ -0,0 +1,8 @@
|
||||
Makefile.in
|
||||
Makefile
|
||||
makefile.mingw
|
||||
ottest
|
||||
*.lo
|
||||
*.la
|
||||
.deps
|
||||
.libs
|
||||
158
src/FT-license.txt
Normal file
158
src/FT-license.txt
Normal file
@ -0,0 +1,158 @@
|
||||
The FreeType Project LICENSE
|
||||
----------------------------
|
||||
|
||||
Copyright 1996-1999 by
|
||||
David Turner, Robert Wilhelm, and Werner Lemberg
|
||||
|
||||
|
||||
|
||||
Introduction
|
||||
============
|
||||
|
||||
The FreeType Project is distributed in several archive packages;
|
||||
some of them may contain, in addition to the FreeType font engine,
|
||||
various tools and contributions which rely on, or relate to, the
|
||||
FreeType Project.
|
||||
|
||||
This license applies to all files found in such packages, and
|
||||
which do not fall under their own explicit license. The license
|
||||
affects thus the FreeType font engine, the test programs,
|
||||
documentation and makefiles, at the very least.
|
||||
|
||||
This license was inspired by the BSD, Artistic, and IJG
|
||||
(Independent JPEG Group) licenses, which all encourage inclusion
|
||||
and use of free software in commercial and freeware products
|
||||
alike. As a consequence, its main points are that:
|
||||
|
||||
o We don't promise that this software works. However, we are be
|
||||
interested in any kind of bug reports. (`as is' distribution)
|
||||
|
||||
o You can use this software for whatever you want, in parts or
|
||||
full form, without having to pay us. (`royalty-free' usage)
|
||||
|
||||
o You may not pretend that you wrote this software. If you use
|
||||
it, or only parts of it, in a program, you must acknowledge
|
||||
somewhere in your documentation that you've used the FreeType
|
||||
code. (`credits')
|
||||
|
||||
We specifically permit and encourage the inclusion of this
|
||||
software, with or without modifications, in commercial products,
|
||||
provided that all warranty or liability claims are assumed by the
|
||||
product vendor.
|
||||
|
||||
|
||||
Legal Terms
|
||||
===========
|
||||
|
||||
0. Definitions
|
||||
--------------
|
||||
|
||||
Throughout this license, the terms `package', `FreeType Project',
|
||||
and `FreeType archive' refer to the set of files originally
|
||||
distributed by the authors (David Turner, Robert Wilhelm, and
|
||||
Werner Lemberg) as the `FreeType project', be they named as alpha,
|
||||
beta or final release.
|
||||
|
||||
`You' refers to the licensee, or person using the project, where
|
||||
`using' is a generic term including compiling the project's source
|
||||
code as well as linking it to form a `program' or `executable'.
|
||||
This program is referred to as `a program using the FreeType
|
||||
engine'.
|
||||
|
||||
This license applies to all files distributed in the original
|
||||
FreeType archive, including all source code, binaries and
|
||||
documentation, unless otherwise stated in the file in its
|
||||
original, unmodified form as distributed in the original archive.
|
||||
If you are unsure whether or not a particular file is covered by
|
||||
this license, you must contact us to verify this.
|
||||
|
||||
The FreeType project is copyright (C) 1996-1999 by David Turner,
|
||||
Robert Wilhelm, and Werner Lemberg. All rights reserved except as
|
||||
specified below.
|
||||
|
||||
1. No Warranty
|
||||
--------------
|
||||
|
||||
THE FREETYPE ARCHIVE IS PROVIDED `AS IS' WITHOUT WARRANTY OF ANY
|
||||
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
BE LIABLE FOR ANY DAMAGES CAUSED BY THE USE OR THE INABILITY TO
|
||||
USE, OF THE FREETYPE PROJECT.
|
||||
|
||||
As you have not signed this license, you are not required to
|
||||
accept it. However, as the FreeType project is copyrighted
|
||||
material, only this license, or another one contracted with the
|
||||
authors, grants you the right to use, distribute, and modify it.
|
||||
Therefore, by using, distributing, or modifying the FreeType
|
||||
project, you indicate that you understand and accept all the terms
|
||||
of this license.
|
||||
|
||||
2. Redistribution
|
||||
-----------------
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
o Redistribution of source code must retain this license file
|
||||
(`licence.txt') unaltered; any additions, deletions or changes
|
||||
to the original files must be clearly indicated in
|
||||
accompanying documentation. The copyright notices of the
|
||||
unaltered, original files must be preserved in all copies of
|
||||
source files.
|
||||
|
||||
o Redistribution in binary form must provide a disclaimer that
|
||||
states that the software is based in part of the work of the
|
||||
FreeType Team, in the distribution documentation. We also
|
||||
encourage you to put an URL to the FreeType web page in your
|
||||
documentation, though this isn't mandatory.
|
||||
|
||||
These conditions apply to any software derived from or based on
|
||||
the FreeType code, not just the unmodified files. If you use our
|
||||
work, you must acknowledge us. However, no fee need be paid to
|
||||
us.
|
||||
|
||||
3. Advertising
|
||||
--------------
|
||||
|
||||
The names of FreeType's authors and contributors may not be used
|
||||
to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
We suggest, but do not require, that you use one or more of the
|
||||
following phrases to refer to this software in your documentation
|
||||
or advertising materials: `FreeType Project', `FreeType Engine',
|
||||
`FreeType library', or `FreeType Distribution'.
|
||||
|
||||
4. Contacts
|
||||
-----------
|
||||
|
||||
There are two mailing lists related to FreeType:
|
||||
|
||||
o freetype@freetype.org
|
||||
|
||||
Discusses general use and applications of FreeType, as well as
|
||||
future and wanted additions to the library and distribution.
|
||||
If you are looking for support, start in this list if you
|
||||
haven't found anything to help you in the documentation.
|
||||
|
||||
o devel@freetype.org
|
||||
|
||||
Discusses bugs, as well as engine internals, design issues,
|
||||
specific licenses, porting, etc.
|
||||
|
||||
o http://www.freetype.org
|
||||
|
||||
Holds the current FreeType web page, which will allow you to
|
||||
download our latest development version and read online
|
||||
documentation.
|
||||
|
||||
You can also contact us individually at:
|
||||
|
||||
David Turner <david.turner@freetype.org>
|
||||
Robert Wilhelm <robert.wilhelm@freetype.org>
|
||||
Werner Lemberg <werner.lemberg@freetype.org>
|
||||
|
||||
|
||||
--- end of license.txt ---
|
||||
39
src/Makefile.am
Normal file
39
src/Makefile.am
Normal file
@ -0,0 +1,39 @@
|
||||
## Process this file with automake to produce Makefile.in
|
||||
|
||||
INCLUDES = \
|
||||
-DSYSCONFDIR=\"$(sysconfdir)\" \
|
||||
-DLIBDIR=\"$(libdir)\" \
|
||||
$(FREETYPE_CFLAGS) \
|
||||
$(X_CFLAGS) \
|
||||
-I$(top_srcdir)
|
||||
|
||||
LDADDS = @STRIP_BEGIN@ \
|
||||
@x_ldflags@ \
|
||||
@x_libs@ \
|
||||
@GLIB_LIBS@ \
|
||||
-lm \
|
||||
@STRIP_END@
|
||||
|
||||
noinst_LTLIBRARIES = libpango-ot.la
|
||||
|
||||
libpango_ot_la_SOURCES = \
|
||||
ftxopen.c \
|
||||
ftxgdef.c \
|
||||
ftxgpos.c \
|
||||
pango-ot-info.c \
|
||||
pango-ot-ruleset.c \
|
||||
ftxgsub.c
|
||||
|
||||
noinst_PROGRAMS = ottest
|
||||
|
||||
ottest_SOURCES = \
|
||||
ottest.c \
|
||||
disasm.c \
|
||||
disasm.h
|
||||
|
||||
ottest_LDADD = \
|
||||
libpango-ot.la \
|
||||
$(FREETYPE_LIBS)
|
||||
|
||||
EXTRA_DIST = \
|
||||
README
|
||||
36
src/README
Normal file
36
src/README
Normal file
@ -0,0 +1,36 @@
|
||||
This directory includes code for using OpenType Layout tables from
|
||||
OpenType fonts with FreeType and
|
||||
|
||||
The table reading code in:
|
||||
|
||||
ftxopen.[ch]
|
||||
ftxopenf.h
|
||||
ftxgdef.[ch]
|
||||
ftxgpos.[ch]
|
||||
ftxgdef.[ch]
|
||||
|
||||
Is derived from the OpenType code in FreeType-1.x, ported to FreeType2.
|
||||
(This code has been abandoned for FreeType2, but until something better
|
||||
comes along, should serve our purposes.)
|
||||
|
||||
This code should be left following the FreeType indentation style and
|
||||
coding conventions.
|
||||
|
||||
In addition to porting to FreeType-2, it has been modified to
|
||||
add support for PangoGlyphString's log_clusters, and in various
|
||||
other ways. Bug reports on these files should be sent to
|
||||
gtk-i18n-list@gtk.org, NOT to the freetype maintainers.
|
||||
|
||||
The license for these files is in the file freetype-license.txt.
|
||||
|
||||
|
||||
Most of the additional files in this directory implement a high-level
|
||||
interface to this that follows Pango conventions and integrates with
|
||||
Pango.
|
||||
|
||||
disasm.[ch] is a partial dumper for OpenType layout tables useful
|
||||
in figuring out what is going on. Please extend to cover additional
|
||||
parts of the tables as you encounter fonts using them.
|
||||
|
||||
Owen Taylor
|
||||
17 December 2000
|
||||
317
src/disasm.c
Normal file
317
src/disasm.c
Normal file
@ -0,0 +1,317 @@
|
||||
/* Pango
|
||||
* disasm.c: Dump OpenType layout tables
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#include <stdarg.h>
|
||||
|
||||
#include "disasm.h"
|
||||
|
||||
#define DUMP(args...) dump (stream, indent, args)
|
||||
#define DUMP_FINT(strct,fld) dump (stream, indent, "<" #fld ">%d</" #fld ">\n", (strct)->fld)
|
||||
#define DUMP_FUINT(strct,fld) dump (stream, indent, "<" #fld ">%u</" #fld ">\n", (strct)->fld)
|
||||
#define DUMP_FGLYPH(strct,fld) dump (stream, indent, "<" #fld ">%#4x</" #fld ">\n", (strct)->fld)
|
||||
|
||||
#define DEF_DUMP(type) static void Dump_ ## type (TTO_ ## type *type, FILE *stream, int indent, FT_Bool is_gsub)
|
||||
#define RECURSE(name, type, val) do { DUMP ("<" #name ">\n"); Dump_ ## type (val, stream, indent + 1, is_gsub); DUMP ("</" #name ">\n"); } while (0)
|
||||
|
||||
static void
|
||||
do_indent (FILE *stream, int indent)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < indent * 3; i++)
|
||||
fputc (' ', stream);
|
||||
}
|
||||
|
||||
static void
|
||||
dump (FILE *stream, int indent, const char *format, ...)
|
||||
{
|
||||
va_list list;
|
||||
|
||||
do_indent (stream, indent);
|
||||
|
||||
va_start (list, format);
|
||||
vfprintf (stream, format, list);
|
||||
va_end (list);
|
||||
}
|
||||
|
||||
static void
|
||||
Print_Tag (FT_ULong tag, FILE *stream)
|
||||
{
|
||||
fprintf (stream, "%c%c%c%c",
|
||||
(unsigned char)(tag >> 24),
|
||||
(unsigned char)((tag & 0xff0000) >> 16),
|
||||
(unsigned char)((tag & 0xff00) >> 8),
|
||||
(unsigned char)(tag & 0xff));
|
||||
}
|
||||
|
||||
DEF_DUMP (LangSys)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (LangSys, LookupOrderOffset);
|
||||
DUMP_FUINT (LangSys, ReqFeatureIndex);
|
||||
DUMP_FUINT (LangSys, FeatureCount);
|
||||
|
||||
for (i=0; i < LangSys->FeatureCount; i++)
|
||||
DUMP("<FeatureIndex>%d</FeatureIndex>\n", LangSys->FeatureIndex[i]);
|
||||
}
|
||||
|
||||
DEF_DUMP (Script)
|
||||
{
|
||||
int i;
|
||||
|
||||
RECURSE (DefaultLangSys, LangSys, &Script->DefaultLangSys);
|
||||
|
||||
DUMP_FUINT (Script, LangSysCount);
|
||||
|
||||
for (i=0; i < Script->LangSysCount; i++)
|
||||
{
|
||||
do_indent (stream, indent);
|
||||
fprintf (stream, "<LangSysTag>");
|
||||
Print_Tag (Script->LangSysRecord[i].LangSysTag, stream);
|
||||
fprintf (stream, "</LangSysTag>\n");
|
||||
RECURSE (LangSys, LangSys, &Script->LangSysRecord[i].LangSys);
|
||||
}
|
||||
}
|
||||
|
||||
DEF_DUMP (ScriptList)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (ScriptList, ScriptCount);
|
||||
|
||||
for (i=0; i < ScriptList->ScriptCount; i++)
|
||||
{
|
||||
do_indent (stream, indent);
|
||||
fprintf (stream, "<ScriptTag>");
|
||||
Print_Tag (ScriptList->ScriptRecord[i].ScriptTag, stream);
|
||||
fprintf (stream, "</ScriptTag>\n");
|
||||
RECURSE (Script, Script, &ScriptList->ScriptRecord[i].Script);
|
||||
}
|
||||
}
|
||||
|
||||
DEF_DUMP (Feature)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (Feature, FeatureParams);
|
||||
DUMP_FUINT (Feature, LookupListCount);
|
||||
|
||||
for (i=0; i < Feature->LookupListCount; i++)
|
||||
DUMP("<LookupIndex>%d</LookupIndex>\n", Feature->LookupListIndex[i]);
|
||||
}
|
||||
|
||||
DEF_DUMP (FeatureList)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (FeatureList, FeatureCount);
|
||||
|
||||
for (i=0; i < FeatureList->FeatureCount; i++)
|
||||
{
|
||||
do_indent (stream, indent);
|
||||
fprintf (stream, "<FeatureTag>");
|
||||
Print_Tag (FeatureList->FeatureRecord[i].FeatureTag, stream);
|
||||
fprintf (stream, "</FeatureTag>\n");
|
||||
RECURSE (Feature, Feature, &FeatureList->FeatureRecord[i].Feature);
|
||||
}
|
||||
}
|
||||
|
||||
DEF_DUMP (Coverage)
|
||||
{
|
||||
DUMP_FUINT (Coverage, CoverageFormat);
|
||||
|
||||
if (Coverage->CoverageFormat == 1)
|
||||
{
|
||||
int i;
|
||||
DUMP_FUINT (&Coverage->cf.cf1, GlyphCount);
|
||||
|
||||
for (i = 0; i < Coverage->cf.cf1.GlyphCount; i++)
|
||||
DUMP("<Glyph>%#4x</Glyph> <!-- %d -->\n", Coverage->cf.cf1.GlyphArray[i], i);
|
||||
}
|
||||
else
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
Dump_GSUB_Lookup_Single (TTO_SubTable *subtable, FILE *stream, int indent, FT_Bool is_gsub)
|
||||
{
|
||||
TTO_SingleSubst *SingleSubst = &subtable->st.gsub.single;
|
||||
|
||||
DUMP_FUINT (SingleSubst, SubstFormat);
|
||||
RECURSE (Coverage, Coverage, &SingleSubst->Coverage);
|
||||
|
||||
if (SingleSubst->SubstFormat == 1)
|
||||
{
|
||||
DUMP_FINT (&SingleSubst->ssf.ssf1, DeltaGlyphID);
|
||||
}
|
||||
else
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FINT (&SingleSubst->ssf.ssf2, GlyphCount);
|
||||
for (i=0; i < SingleSubst->ssf.ssf2.GlyphCount; i++)
|
||||
DUMP("<Substitute>%#4x</Substitute> <!-- %d -->\n", SingleSubst->ssf.ssf2.Substitute[i], i);
|
||||
}
|
||||
}
|
||||
|
||||
DEF_DUMP (Ligature)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FGLYPH (Ligature, LigGlyph);
|
||||
DUMP_FUINT (Ligature, ComponentCount);
|
||||
|
||||
for (i=0; i < Ligature->ComponentCount - 1; i++)
|
||||
DUMP("<Component>%#4x</Component>\n", Ligature->Component[i]);
|
||||
}
|
||||
|
||||
DEF_DUMP (LigatureSet)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (LigatureSet, LigatureCount);
|
||||
|
||||
for (i=0; i < LigatureSet->LigatureCount; i++)
|
||||
RECURSE (Ligature, Ligature, &LigatureSet->Ligature[i]);
|
||||
}
|
||||
|
||||
static void
|
||||
Dump_GSUB_Lookup_Ligature (TTO_SubTable *subtable, FILE *stream, int indent, FT_Bool is_gsub)
|
||||
{
|
||||
int i;
|
||||
TTO_LigatureSubst *LigatureSubst = &subtable->st.gsub.ligature;
|
||||
|
||||
DUMP_FUINT (LigatureSubst, SubstFormat);
|
||||
RECURSE (Coverage, Coverage, &LigatureSubst->Coverage);
|
||||
|
||||
DUMP_FUINT (LigatureSubst, LigatureSetCount);
|
||||
|
||||
for (i=0; i < LigatureSubst->LigatureSetCount; i++)
|
||||
RECURSE (LigatureSet, LigatureSet, &LigatureSubst->LigatureSet[i]);
|
||||
}
|
||||
|
||||
DEF_DUMP (Lookup)
|
||||
{
|
||||
int i;
|
||||
const char *lookup_name = NULL;
|
||||
void (*lookup_func) (TTO_SubTable *subtable, FILE *stream, int indent, FT_Bool is_gsub) = NULL;
|
||||
|
||||
if (is_gsub)
|
||||
{
|
||||
switch (Lookup->LookupType)
|
||||
{
|
||||
case GSUB_LOOKUP_SINGLE:
|
||||
lookup_name = "SINGLE";
|
||||
lookup_func = Dump_GSUB_Lookup_Single;
|
||||
break;
|
||||
case GSUB_LOOKUP_MULTIPLE:
|
||||
lookup_name = "MULTIPLE";
|
||||
break;
|
||||
case GSUB_LOOKUP_ALTERNATE:
|
||||
lookup_name = "ALTERNATE";
|
||||
break;
|
||||
case GSUB_LOOKUP_LIGATURE:
|
||||
lookup_name = "LIGATURE";
|
||||
lookup_func = Dump_GSUB_Lookup_Ligature;
|
||||
break;
|
||||
case GSUB_LOOKUP_CONTEXT:
|
||||
lookup_name = "CONTEXT";
|
||||
break;
|
||||
case GSUB_LOOKUP_CHAIN:
|
||||
lookup_name = "CHAIN";
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (Lookup->LookupType)
|
||||
{
|
||||
case GPOS_LOOKUP_SINGLE:
|
||||
lookup_name = "SINGLE";
|
||||
break;
|
||||
case GPOS_LOOKUP_PAIR:
|
||||
lookup_name = "PAIR";
|
||||
break;
|
||||
case GPOS_LOOKUP_CURSIVE:
|
||||
lookup_name = "CURSIVE";
|
||||
break;
|
||||
case GPOS_LOOKUP_MARKBASE:
|
||||
lookup_name = "MARKBASE";
|
||||
break;
|
||||
case GPOS_LOOKUP_MARKLIG:
|
||||
lookup_name = "MARKLIG";
|
||||
break;
|
||||
case GPOS_LOOKUP_MARKMARK:
|
||||
lookup_name = "MARKMARK";
|
||||
break;
|
||||
case GPOS_LOOKUP_CONTEXT:
|
||||
lookup_name = "CONTEXT";
|
||||
break;
|
||||
case GPOS_LOOKUP_CHAIN:
|
||||
lookup_name = "CHAIN";
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
DUMP("<LookupType>%s</LookupType>\n", lookup_name);
|
||||
|
||||
for (i=0; i < Lookup->SubTableCount; i++)
|
||||
{
|
||||
DUMP ("<Subtable>\n");
|
||||
if (lookup_func)
|
||||
(*lookup_func) (&Lookup->SubTable[i], stream, indent + 1, is_gsub);
|
||||
DUMP ("</Subtable>\n");
|
||||
}
|
||||
}
|
||||
|
||||
DEF_DUMP (LookupList)
|
||||
{
|
||||
int i;
|
||||
|
||||
DUMP_FUINT (LookupList, LookupCount);
|
||||
|
||||
for (i=0; i < LookupList->LookupCount; i++)
|
||||
RECURSE (Lookup, Lookup, &LookupList->Lookup[i]);
|
||||
}
|
||||
|
||||
void
|
||||
TT_Dump_GSUB_Table (TTO_GSUB gsub, FILE *stream)
|
||||
{
|
||||
int indent = 0;
|
||||
FT_Bool is_gsub = 1;
|
||||
|
||||
RECURSE (ScriptList, ScriptList, &gsub->ScriptList);
|
||||
RECURSE (FeatureList, FeatureList, &gsub->FeatureList);
|
||||
RECURSE (LookupList, LookupList, &gsub->LookupList);
|
||||
}
|
||||
|
||||
void
|
||||
TT_Dump_GPOS_Table (TTO_GPOS gpos, FILE *stream)
|
||||
{
|
||||
int indent = 0;
|
||||
FT_Bool is_gsub = 0;
|
||||
|
||||
RECURSE (ScriptList, ScriptList, &gpos->ScriptList);
|
||||
RECURSE (FeatureList, FeatureList, &gpos->FeatureList);
|
||||
RECURSE (LookupList, LookupList, &gpos->LookupList);
|
||||
}
|
||||
26
src/disasm.h
Normal file
26
src/disasm.h
Normal file
@ -0,0 +1,26 @@
|
||||
/* Pango
|
||||
* disasm.h: Dump OpenType layout tables
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include "ftxopen.h"
|
||||
|
||||
void TT_Dump_GSUB_Table (TTO_GSUB gsub, FILE *stream);
|
||||
void TT_Dump_GPOS_Table (TTO_GPOS gpos, FILE *stream);
|
||||
1155
src/ftxgdef.c
Normal file
1155
src/ftxgdef.c
Normal file
File diff suppressed because it is too large
Load Diff
220
src/ftxgdef.h
Normal file
220
src/ftxgdef.h
Normal file
@ -0,0 +1,220 @@
|
||||
/*******************************************************************
|
||||
*
|
||||
* ftxgdef.h
|
||||
*
|
||||
* TrueType Open GDEF table support
|
||||
*
|
||||
* Copyright 1996-2000 by
|
||||
* David Turner, Robert Wilhelm, and Werner Lemberg.
|
||||
*
|
||||
* This file is part of the FreeType project, and may only be used
|
||||
* modified and distributed under the terms of the FreeType project
|
||||
* license, LICENSE.TXT. By continuing to use, modify, or distribute
|
||||
* this file you indicate that you have read the license and
|
||||
* understand and accept it fully.
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
#ifndef FTXOPEN_H
|
||||
#error "Don't include this file! Use ftxopen.h instead."
|
||||
#endif
|
||||
|
||||
#ifndef FTXGDEF_H
|
||||
#define FTXGDEF_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define TTO_Err_Invalid_GDEF_SubTable_Format 0x1030
|
||||
#define TTO_Err_Invalid_GDEF_SubTable 0x1031
|
||||
|
||||
|
||||
/* GDEF glyph classes */
|
||||
|
||||
#define UNCLASSIFIED_GLYPH 0
|
||||
#define SIMPLE_GLYPH 1
|
||||
#define LIGATURE_GLYPH 2
|
||||
#define MARK_GLYPH 3
|
||||
#define COMPONENT_GLYPH 4
|
||||
|
||||
/* GDEF glyph properties, corresponding to class values 1-4. Note that
|
||||
TTO_COMPONENT has no corresponding flag in the LookupFlag field. */
|
||||
|
||||
#define TTO_BASE_GLYPH 0x0002
|
||||
#define TTO_LIGATURE 0x0004
|
||||
#define TTO_MARK 0x0008
|
||||
#define TTO_COMPONENT 0x0010
|
||||
|
||||
|
||||
/* Attachment related structures */
|
||||
|
||||
struct TTO_AttachPoint_
|
||||
{
|
||||
FT_UShort PointCount; /* size of the PointIndex array */
|
||||
FT_UShort* PointIndex; /* array of contour points */
|
||||
};
|
||||
|
||||
typedef struct TTO_AttachPoint_ TTO_AttachPoint;
|
||||
|
||||
|
||||
struct TTO_AttachList_
|
||||
{
|
||||
FT_Bool loaded;
|
||||
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort GlyphCount; /* number of glyphs with
|
||||
attachments */
|
||||
TTO_AttachPoint* AttachPoint; /* array of AttachPoint tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_AttachList_ TTO_AttachList;
|
||||
|
||||
|
||||
/* Ligature Caret related structures */
|
||||
|
||||
struct TTO_CaretValueFormat1_
|
||||
{
|
||||
FT_Short Coordinate; /* x or y value (in design units) */
|
||||
};
|
||||
|
||||
typedef struct TTO_CaretValueFormat1_ TTO_CaretValueFormat1;
|
||||
|
||||
|
||||
struct TTO_CaretValueFormat2_
|
||||
{
|
||||
FT_UShort CaretValuePoint; /* contour point index on glyph */
|
||||
};
|
||||
|
||||
typedef struct TTO_CaretValueFormat2_ TTO_CaretValueFormat2;
|
||||
|
||||
|
||||
struct TTO_CaretValueFormat3_
|
||||
{
|
||||
FT_Short Coordinate; /* x or y value (in design units) */
|
||||
TTO_Device Device; /* Device table for x or y value */
|
||||
};
|
||||
|
||||
typedef struct TTO_CaretValueFormat3_ TTO_CaretValueFormat3;
|
||||
|
||||
|
||||
struct TTO_CaretValueFormat4_
|
||||
{
|
||||
FT_UShort IdCaretValue; /* metric ID */
|
||||
};
|
||||
|
||||
typedef struct TTO_CaretValueFormat4_ TTO_CaretValueFormat4;
|
||||
|
||||
|
||||
struct TTO_CaretValue_
|
||||
{
|
||||
FT_UShort CaretValueFormat; /* 1, 2, 3, or 4 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_CaretValueFormat1 cvf1;
|
||||
TTO_CaretValueFormat2 cvf2;
|
||||
TTO_CaretValueFormat3 cvf3;
|
||||
TTO_CaretValueFormat4 cvf4;
|
||||
} cvf;
|
||||
};
|
||||
|
||||
typedef struct TTO_CaretValue_ TTO_CaretValue;
|
||||
|
||||
|
||||
struct TTO_LigGlyph_
|
||||
{
|
||||
FT_Bool loaded;
|
||||
|
||||
FT_UShort CaretCount; /* number of caret values */
|
||||
TTO_CaretValue* CaretValue; /* array of caret values */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigGlyph_ TTO_LigGlyph;
|
||||
|
||||
|
||||
struct TTO_LigCaretList_
|
||||
{
|
||||
FT_Bool loaded;
|
||||
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort LigGlyphCount; /* number of ligature glyphs */
|
||||
TTO_LigGlyph* LigGlyph; /* array of LigGlyph tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigCaretList_ TTO_LigCaretList;
|
||||
|
||||
|
||||
/* The `NewGlyphClasses' field is not defined in the TTO specification.
|
||||
We use it for fonts with a constructed `GlyphClassDef' structure
|
||||
(i.e., which don't have a GDEF table) to collect glyph classes
|
||||
assigned during the lookup process. The number of arrays in this
|
||||
pointer array is GlyphClassDef->cd.cd2.ClassRangeCount+1; the nth
|
||||
array then contains the glyph class values of the glyphs not covered
|
||||
by the ClassRangeRecords structures with index n-1 and n. We store
|
||||
glyph class values for four glyphs in a single array element.
|
||||
|
||||
`LastGlyph' is identical to the number of glyphs minus one in the
|
||||
font; we need it only if `NewGlyphClasses' is not NULL (to have an
|
||||
upper bound for the last array).
|
||||
|
||||
Note that we first store the file offset to the `MarkAttachClassDef'
|
||||
field (which has been introduced in OpenType 1.2) -- since the
|
||||
`Version' field value hasn't been increased to indicate that we have
|
||||
one more field for some obscure reason, we must parse the GSUB table
|
||||
to find out whether class values refer to this table. Only then we
|
||||
can finally load the MarkAttachClassDef structure if necessary. */
|
||||
|
||||
struct TTO_GDEFHeader_
|
||||
{
|
||||
FT_Memory memory;
|
||||
FT_ULong offset;
|
||||
|
||||
FT_Fixed Version;
|
||||
|
||||
TTO_ClassDefinition GlyphClassDef;
|
||||
TTO_AttachList AttachList;
|
||||
TTO_LigCaretList LigCaretList;
|
||||
FT_ULong MarkAttachClassDef_offset;
|
||||
TTO_ClassDefinition MarkAttachClassDef; /* new in OT 1.2 */
|
||||
|
||||
FT_UShort LastGlyph;
|
||||
FT_UShort** NewGlyphClasses;
|
||||
};
|
||||
|
||||
typedef struct TTO_GDEFHeader_ TTO_GDEFHeader;
|
||||
typedef struct TTO_GDEFHeader_* TTO_GDEF;
|
||||
|
||||
|
||||
/* finally, the GDEF API */
|
||||
|
||||
/* EXPORT_DEF
|
||||
FT_Error TT_Init_GDEF_Extension( TT_Engine engine ); */
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Load_GDEF_Table( FT_Face face,
|
||||
TTO_GDEFHeader** gdef );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Done_GDEF_Table ( TTO_GDEFHeader* gdef );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GDEF_Get_Glyph_Property( TTO_GDEFHeader* gdef,
|
||||
FT_UShort glyphID,
|
||||
FT_UShort* property );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GDEF_Build_ClassDefinition( TTO_GDEFHeader* gdef,
|
||||
FT_UShort num_glyphs,
|
||||
FT_UShort glyph_count,
|
||||
FT_UShort* glyph_array,
|
||||
FT_UShort* class_array );
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* FTXGDEF_H */
|
||||
|
||||
|
||||
/* END */
|
||||
6222
src/ftxgpos.c
Normal file
6222
src/ftxgpos.c
Normal file
File diff suppressed because it is too large
Load Diff
858
src/ftxgpos.h
Normal file
858
src/ftxgpos.h
Normal file
@ -0,0 +1,858 @@
|
||||
/*******************************************************************
|
||||
*
|
||||
* ftxgpos.h
|
||||
*
|
||||
* TrueType Open GPOS table support
|
||||
*
|
||||
* Copyright 1996-2000 by
|
||||
* David Turner, Robert Wilhelm, and Werner Lemberg.
|
||||
*
|
||||
* This file is part of the FreeType project, and may only be used
|
||||
* modified and distributed under the terms of the FreeType project
|
||||
* license, LICENSE.TXT. By continuing to use, modify, or distribute
|
||||
* this file you indicate that you have read the license and
|
||||
* understand and accept it fully.
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
#ifndef FTXOPEN_H
|
||||
#error "Don't include this file! Use ftxopen.h instead."
|
||||
#endif
|
||||
|
||||
#ifndef FTXGPOS_H
|
||||
#define FTXGPOS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define TTO_Err_Invalid_GPOS_SubTable_Format 0x1020
|
||||
#define TTO_Err_Invalid_GPOS_SubTable 0x1021
|
||||
|
||||
|
||||
/* Lookup types for glyph positioning */
|
||||
|
||||
#define GPOS_LOOKUP_SINGLE 1
|
||||
#define GPOS_LOOKUP_PAIR 2
|
||||
#define GPOS_LOOKUP_CURSIVE 3
|
||||
#define GPOS_LOOKUP_MARKBASE 4
|
||||
#define GPOS_LOOKUP_MARKLIG 5
|
||||
#define GPOS_LOOKUP_MARKMARK 6
|
||||
#define GPOS_LOOKUP_CONTEXT 7
|
||||
#define GPOS_LOOKUP_CHAIN 8
|
||||
|
||||
|
||||
/* A pointer to a function which loads a glyph. Its parameters are
|
||||
the same as in a call to TT_Load_Glyph() -- if no glyph loading
|
||||
function will be registered with TTO_GPOS_Register_Glyph_Function(),
|
||||
TT_Load_Glyph() will be called indeed. The purpose of this function
|
||||
pointer is to provide a hook for caching glyph outlines and sbits
|
||||
(using the instance's generic pointer to hold the data).
|
||||
|
||||
If for some reason no outline data is available (e.g. for an
|
||||
embedded bitmap glyph), _glyph->outline.n_points should be set to
|
||||
zero. _glyph can be computed with
|
||||
|
||||
_glyph = HANDLE_Glyph( glyph ) */
|
||||
|
||||
typedef FT_Error (*TTO_GlyphFunction)(FT_Face face,
|
||||
FT_UInt glyphIndex,
|
||||
FT_Int loadFlags );
|
||||
|
||||
|
||||
/* A pointer to a function which accesses the PostScript interpreter.
|
||||
Multiple Master fonts need this interface to convert a metric ID
|
||||
(as stored in an OpenType font version 1.2 or higher) `metric_id'
|
||||
into a metric value (returned in `metric_value').
|
||||
|
||||
`data' points to the user-defined structure specified during a
|
||||
call to TT_GPOS_Register_MM_Function().
|
||||
|
||||
`metric_value' must be returned as a scaled value (but shouldn't
|
||||
be rounded). */
|
||||
|
||||
typedef FT_Error (*TTO_MMFunction)(FT_Face face,
|
||||
FT_UShort metric_id,
|
||||
FT_Pos* metric_value,
|
||||
void* data );
|
||||
|
||||
|
||||
struct TTO_GPOSHeader_
|
||||
{
|
||||
FT_Memory memory;
|
||||
|
||||
FT_Fixed Version;
|
||||
|
||||
TTO_ScriptList ScriptList;
|
||||
TTO_FeatureList FeatureList;
|
||||
TTO_LookupList LookupList;
|
||||
|
||||
TTO_GDEFHeader* gdef;
|
||||
|
||||
/* the next field is used for a callback function to get the
|
||||
glyph outline. */
|
||||
|
||||
TTO_GlyphFunction gfunc;
|
||||
|
||||
/* this is OpenType 1.2 -- Multiple Master fonts need this
|
||||
callback function to get various metric values from the
|
||||
PostScript interpreter. */
|
||||
|
||||
TTO_MMFunction mmfunc;
|
||||
void* data;
|
||||
};
|
||||
|
||||
typedef struct TTO_GPOSHeader_ TTO_GPOSHeader;
|
||||
typedef struct TTO_GPOSHeader_* TTO_GPOS;
|
||||
|
||||
|
||||
/* shared tables */
|
||||
|
||||
struct TTO_ValueRecord_
|
||||
{
|
||||
FT_Short XPlacement; /* horizontal adjustment for
|
||||
placement */
|
||||
FT_Short YPlacement; /* vertical adjustment for
|
||||
placement */
|
||||
FT_Short XAdvance; /* horizontal adjustment for
|
||||
advance */
|
||||
FT_Short YAdvance; /* vertical adjustment for
|
||||
advance */
|
||||
TTO_Device XPlacementDevice; /* device table for horizontal
|
||||
placement */
|
||||
TTO_Device YPlacementDevice; /* device table for vertical
|
||||
placement */
|
||||
TTO_Device XAdvanceDevice; /* device table for horizontal
|
||||
advance */
|
||||
TTO_Device YAdvanceDevice; /* device table for vertical
|
||||
advance */
|
||||
FT_UShort XIdPlacement; /* horizontal placement metric ID */
|
||||
FT_UShort YIdPlacement; /* vertical placement metric ID */
|
||||
FT_UShort XIdAdvance; /* horizontal advance metric ID */
|
||||
FT_UShort YIdAdvance; /* vertical advance metric ID */
|
||||
};
|
||||
|
||||
typedef struct TTO_ValueRecord_ TTO_ValueRecord;
|
||||
|
||||
|
||||
/* Mask values to scan the value format of the ValueRecord structure.
|
||||
We always expand compressed ValueRecords of the font. */
|
||||
|
||||
#define HAVE_X_PLACEMENT 0x0001
|
||||
#define HAVE_Y_PLACEMENT 0x0002
|
||||
#define HAVE_X_ADVANCE 0x0004
|
||||
#define HAVE_Y_ADVANCE 0x0008
|
||||
#define HAVE_X_PLACEMENT_DEVICE 0x0010
|
||||
#define HAVE_Y_PLACEMENT_DEVICE 0x0020
|
||||
#define HAVE_X_ADVANCE_DEVICE 0x0040
|
||||
#define HAVE_Y_ADVANCE_DEVICE 0x0080
|
||||
#define HAVE_X_ID_PLACEMENT 0x0100
|
||||
#define HAVE_Y_ID_PLACEMENT 0x0200
|
||||
#define HAVE_X_ID_ADVANCE 0x0400
|
||||
#define HAVE_Y_ID_ADVANCE 0x0800
|
||||
|
||||
|
||||
struct TTO_AnchorFormat1_
|
||||
{
|
||||
FT_Short XCoordinate; /* horizontal value */
|
||||
FT_Short YCoordinate; /* vertical value */
|
||||
};
|
||||
|
||||
typedef struct TTO_AnchorFormat1_ TTO_AnchorFormat1;
|
||||
|
||||
|
||||
struct TTO_AnchorFormat2_
|
||||
{
|
||||
FT_Short XCoordinate; /* horizontal value */
|
||||
FT_Short YCoordinate; /* vertical value */
|
||||
FT_UShort AnchorPoint; /* index to glyph contour point */
|
||||
};
|
||||
|
||||
typedef struct TTO_AnchorFormat2_ TTO_AnchorFormat2;
|
||||
|
||||
|
||||
struct TTO_AnchorFormat3_
|
||||
{
|
||||
FT_Short XCoordinate; /* horizontal value */
|
||||
FT_Short YCoordinate; /* vertical value */
|
||||
TTO_Device XDeviceTable; /* device table for X coordinate */
|
||||
TTO_Device YDeviceTable; /* device table for Y coordinate */
|
||||
};
|
||||
|
||||
typedef struct TTO_AnchorFormat3_ TTO_AnchorFormat3;
|
||||
|
||||
|
||||
struct TTO_AnchorFormat4_
|
||||
{
|
||||
FT_UShort XIdAnchor; /* horizontal metric ID */
|
||||
FT_UShort YIdAnchor; /* vertical metric ID */
|
||||
};
|
||||
|
||||
typedef struct TTO_AnchorFormat4_ TTO_AnchorFormat4;
|
||||
|
||||
|
||||
struct TTO_Anchor_
|
||||
{
|
||||
FT_UShort PosFormat; /* 1, 2, 3, or 4 -- 0 indicates
|
||||
that there is no Anchor table */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_AnchorFormat1 af1;
|
||||
TTO_AnchorFormat2 af2;
|
||||
TTO_AnchorFormat3 af3;
|
||||
TTO_AnchorFormat4 af4;
|
||||
} af;
|
||||
};
|
||||
|
||||
typedef struct TTO_Anchor_ TTO_Anchor;
|
||||
|
||||
|
||||
struct TTO_MarkRecord_
|
||||
{
|
||||
FT_UShort Class; /* mark class */
|
||||
TTO_Anchor MarkAnchor; /* anchor table */
|
||||
};
|
||||
|
||||
typedef struct TTO_MarkRecord_ TTO_MarkRecord;
|
||||
|
||||
|
||||
struct TTO_MarkArray_
|
||||
{
|
||||
FT_UShort MarkCount; /* number of MarkRecord tables */
|
||||
TTO_MarkRecord* MarkRecord; /* array of MarkRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_MarkArray_ TTO_MarkArray;
|
||||
|
||||
|
||||
/* LookupType 1 */
|
||||
|
||||
struct TTO_SinglePosFormat1_
|
||||
{
|
||||
TTO_ValueRecord Value; /* ValueRecord for all covered
|
||||
glyphs */
|
||||
};
|
||||
|
||||
typedef struct TTO_SinglePosFormat1_ TTO_SinglePosFormat1;
|
||||
|
||||
|
||||
struct TTO_SinglePosFormat2_
|
||||
{
|
||||
FT_UShort ValueCount; /* number of ValueRecord tables */
|
||||
TTO_ValueRecord* Value; /* array of ValueRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_SinglePosFormat2_ TTO_SinglePosFormat2;
|
||||
|
||||
|
||||
struct TTO_SinglePos_
|
||||
{
|
||||
FT_UShort PosFormat; /* 1 or 2 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
|
||||
FT_UShort ValueFormat; /* format of ValueRecord table */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_SinglePosFormat1 spf1;
|
||||
TTO_SinglePosFormat2 spf2;
|
||||
} spf;
|
||||
};
|
||||
|
||||
typedef struct TTO_SinglePos_ TTO_SinglePos;
|
||||
|
||||
|
||||
/* LookupType 2 */
|
||||
|
||||
struct TTO_PairValueRecord_
|
||||
{
|
||||
FT_UShort SecondGlyph; /* glyph ID for second glyph */
|
||||
TTO_ValueRecord Value1; /* pos. data for first glyph */
|
||||
TTO_ValueRecord Value2; /* pos. data for second glyph */
|
||||
};
|
||||
|
||||
typedef struct TTO_PairValueRecord_ TTO_PairValueRecord;
|
||||
|
||||
|
||||
struct TTO_PairSet_
|
||||
{
|
||||
FT_UShort PairValueCount;
|
||||
/* number of PairValueRecord tables */
|
||||
TTO_PairValueRecord* PairValueRecord;
|
||||
/* array of PairValueRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PairSet_ TTO_PairSet;
|
||||
|
||||
|
||||
struct TTO_PairPosFormat1_
|
||||
{
|
||||
FT_UShort PairSetCount; /* number of PairSet tables */
|
||||
TTO_PairSet* PairSet; /* array of PairSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PairPosFormat1_ TTO_PairPosFormat1;
|
||||
|
||||
|
||||
struct TTO_Class2Record_
|
||||
{
|
||||
TTO_ValueRecord Value1; /* pos. data for first glyph */
|
||||
TTO_ValueRecord Value2; /* pos. data for second glyph */
|
||||
};
|
||||
|
||||
typedef struct TTO_Class2Record_ TTO_Class2Record;
|
||||
|
||||
|
||||
struct TTO_Class1Record_
|
||||
{
|
||||
TTO_Class2Record* Class2Record; /* array of Class2Record tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_Class1Record_ TTO_Class1Record;
|
||||
|
||||
|
||||
struct TTO_PairPosFormat2_
|
||||
{
|
||||
TTO_ClassDefinition ClassDef1; /* class def. for first glyph */
|
||||
TTO_ClassDefinition ClassDef2; /* class def. for second glyph */
|
||||
FT_UShort Class1Count; /* number of classes in ClassDef1
|
||||
table */
|
||||
FT_UShort Class2Count; /* number of classes in ClassDef2
|
||||
table */
|
||||
TTO_Class1Record* Class1Record; /* array of Class1Record tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PairPosFormat2_ TTO_PairPosFormat2;
|
||||
|
||||
|
||||
struct TTO_PairPos_
|
||||
{
|
||||
FT_UShort PosFormat; /* 1 or 2 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort ValueFormat1; /* format of ValueRecord table
|
||||
for first glyph */
|
||||
FT_UShort ValueFormat2; /* format of ValueRecord table
|
||||
for second glyph */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_PairPosFormat1 ppf1;
|
||||
TTO_PairPosFormat2 ppf2;
|
||||
} ppf;
|
||||
};
|
||||
|
||||
typedef struct TTO_PairPos_ TTO_PairPos;
|
||||
|
||||
|
||||
/* LookupType 3 */
|
||||
|
||||
struct TTO_EntryExitRecord_
|
||||
{
|
||||
TTO_Anchor EntryAnchor; /* entry Anchor table */
|
||||
TTO_Anchor ExitAnchor; /* exit Anchor table */
|
||||
};
|
||||
|
||||
|
||||
typedef struct TTO_EntryExitRecord_ TTO_EntryExitRecord;
|
||||
|
||||
struct TTO_CursivePos_
|
||||
{
|
||||
FT_UShort PosFormat; /* always 1 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort EntryExitCount;
|
||||
/* number of EntryExitRecord tables */
|
||||
TTO_EntryExitRecord* EntryExitRecord;
|
||||
/* array of EntryExitRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_CursivePos_ TTO_CursivePos;
|
||||
|
||||
|
||||
/* LookupType 4 */
|
||||
|
||||
struct TTO_BaseRecord_
|
||||
{
|
||||
TTO_Anchor* BaseAnchor; /* array of base glyph anchor
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_BaseRecord_ TTO_BaseRecord;
|
||||
|
||||
|
||||
struct TTO_BaseArray_
|
||||
{
|
||||
FT_UShort BaseCount; /* number of BaseRecord tables */
|
||||
TTO_BaseRecord* BaseRecord; /* array of BaseRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_BaseArray_ TTO_BaseArray;
|
||||
|
||||
|
||||
struct TTO_MarkBasePos_
|
||||
{
|
||||
FT_UShort PosFormat; /* always 1 */
|
||||
TTO_Coverage MarkCoverage; /* mark glyph coverage table */
|
||||
TTO_Coverage BaseCoverage; /* base glyph coverage table */
|
||||
FT_UShort ClassCount; /* number of mark classes */
|
||||
TTO_MarkArray MarkArray; /* mark array table */
|
||||
TTO_BaseArray BaseArray; /* base array table */
|
||||
};
|
||||
|
||||
typedef struct TTO_MarkBasePos_ TTO_MarkBasePos;
|
||||
|
||||
|
||||
/* LookupType 5 */
|
||||
|
||||
struct TTO_ComponentRecord_
|
||||
{
|
||||
TTO_Anchor* LigatureAnchor; /* array of ligature glyph anchor
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ComponentRecord_ TTO_ComponentRecord;
|
||||
|
||||
|
||||
struct TTO_LigatureAttach_
|
||||
{
|
||||
FT_UShort ComponentCount;
|
||||
/* number of ComponentRecord tables */
|
||||
TTO_ComponentRecord* ComponentRecord;
|
||||
/* array of ComponentRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigatureAttach_ TTO_LigatureAttach;
|
||||
|
||||
|
||||
struct TTO_LigatureArray_
|
||||
{
|
||||
FT_UShort LigatureCount; /* number of LigatureAttach tables */
|
||||
TTO_LigatureAttach* LigatureAttach;
|
||||
/* array of LigatureAttach tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigatureArray_ TTO_LigatureArray;
|
||||
|
||||
|
||||
struct TTO_MarkLigPos_
|
||||
{
|
||||
FT_UShort PosFormat; /* always 1 */
|
||||
TTO_Coverage MarkCoverage; /* mark glyph coverage table */
|
||||
TTO_Coverage LigatureCoverage;
|
||||
/* ligature glyph coverage table */
|
||||
FT_UShort ClassCount; /* number of mark classes */
|
||||
TTO_MarkArray MarkArray; /* mark array table */
|
||||
TTO_LigatureArray LigatureArray; /* ligature array table */
|
||||
};
|
||||
|
||||
typedef struct TTO_MarkLigPos_ TTO_MarkLigPos;
|
||||
|
||||
|
||||
/* LookupType 6 */
|
||||
|
||||
struct TTO_Mark2Record_
|
||||
{
|
||||
TTO_Anchor* Mark2Anchor; /* array of mark glyph anchor
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_Mark2Record_ TTO_Mark2Record;
|
||||
|
||||
|
||||
struct TTO_Mark2Array_
|
||||
{
|
||||
FT_UShort Mark2Count; /* number of Mark2Record tables */
|
||||
TTO_Mark2Record* Mark2Record; /* array of Mark2Record tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_Mark2Array_ TTO_Mark2Array;
|
||||
|
||||
|
||||
struct TTO_MarkMarkPos_
|
||||
{
|
||||
FT_UShort PosFormat; /* always 1 */
|
||||
TTO_Coverage Mark1Coverage; /* first mark glyph coverage table */
|
||||
TTO_Coverage Mark2Coverage; /* second mark glyph coverave table */
|
||||
FT_UShort ClassCount; /* number of combining mark classes */
|
||||
TTO_MarkArray Mark1Array; /* MarkArray table for first mark */
|
||||
TTO_Mark2Array Mark2Array; /* MarkArray table for second mark */
|
||||
};
|
||||
|
||||
typedef struct TTO_MarkMarkPos_ TTO_MarkMarkPos;
|
||||
|
||||
|
||||
/* needed by both lookup type 7 and 8 */
|
||||
|
||||
struct TTO_PosLookupRecord_
|
||||
{
|
||||
FT_UShort SequenceIndex; /* index into current
|
||||
glyph sequence */
|
||||
FT_UShort LookupListIndex; /* Lookup to apply to that pos. */
|
||||
};
|
||||
|
||||
typedef struct TTO_PosLookupRecord_ TTO_PosLookupRecord;
|
||||
|
||||
|
||||
/* LookupType 7 */
|
||||
|
||||
struct TTO_PosRule_
|
||||
{
|
||||
FT_UShort GlyphCount; /* total number of input glyphs */
|
||||
FT_UShort PosCount; /* number of PosLookupRecord tables */
|
||||
FT_UShort* Input; /* array of input glyph IDs */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of PosLookupRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PosRule_ TTO_PosRule;
|
||||
|
||||
|
||||
struct TTO_PosRuleSet_
|
||||
{
|
||||
FT_UShort PosRuleCount; /* number of PosRule tables */
|
||||
TTO_PosRule* PosRule; /* array of PosRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PosRuleSet_ TTO_PosRuleSet;
|
||||
|
||||
|
||||
struct TTO_ContextPosFormat1_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort PosRuleSetCount; /* number of PosRuleSet tables */
|
||||
TTO_PosRuleSet* PosRuleSet; /* array of PosRuleSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextPosFormat1_ TTO_ContextPosFormat1;
|
||||
|
||||
|
||||
struct TTO_PosClassRule_
|
||||
{
|
||||
FT_UShort GlyphCount; /* total number of context classes */
|
||||
FT_UShort PosCount; /* number of PosLookupRecord tables */
|
||||
FT_UShort* Class; /* array of classes */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of PosLookupRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PosClassRule_ TTO_PosClassRule;
|
||||
|
||||
|
||||
struct TTO_PosClassSet_
|
||||
{
|
||||
FT_UShort PosClassRuleCount;
|
||||
/* number of PosClassRule tables */
|
||||
TTO_PosClassRule* PosClassRule; /* array of PosClassRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_PosClassSet_ TTO_PosClassSet;
|
||||
|
||||
|
||||
/* The `MaxContextLength' field is not defined in the TTO specification
|
||||
but simplifies the implementation of this format. It holds the
|
||||
maximal context length used in the context rules. */
|
||||
|
||||
struct TTO_ContextPosFormat2_
|
||||
{
|
||||
FT_UShort MaxContextLength;
|
||||
/* maximal context length */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
TTO_ClassDefinition ClassDef; /* ClassDef table */
|
||||
FT_UShort PosClassSetCount;
|
||||
/* number of PosClassSet tables */
|
||||
TTO_PosClassSet* PosClassSet; /* array of PosClassSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextPosFormat2_ TTO_ContextPosFormat2;
|
||||
|
||||
|
||||
struct TTO_ContextPosFormat3_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of input glyphs */
|
||||
FT_UShort PosCount; /* number of PosLookupRecord tables */
|
||||
TTO_Coverage* Coverage; /* array of Coverage tables */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of PosLookupRecord tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextPosFormat3_ TTO_ContextPosFormat3;
|
||||
|
||||
|
||||
struct TTO_ContextPos_
|
||||
{
|
||||
FT_UShort PosFormat; /* 1, 2, or 3 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_ContextPosFormat1 cpf1;
|
||||
TTO_ContextPosFormat2 cpf2;
|
||||
TTO_ContextPosFormat3 cpf3;
|
||||
} cpf;
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextPos_ TTO_ContextPos;
|
||||
|
||||
|
||||
/* LookupType 8 */
|
||||
|
||||
struct TTO_ChainPosRule_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* total number of backtrack glyphs */
|
||||
FT_UShort* Backtrack; /* array of backtrack glyph IDs */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* total number of input glyphs */
|
||||
FT_UShort* Input; /* array of input glyph IDs */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* total number of lookahead glyphs */
|
||||
FT_UShort* Lookahead; /* array of lookahead glyph IDs */
|
||||
FT_UShort PosCount; /* number of PosLookupRecords */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of PosLookupRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainPosRule_ TTO_ChainPosRule;
|
||||
|
||||
|
||||
struct TTO_ChainPosRuleSet_
|
||||
{
|
||||
FT_UShort ChainPosRuleCount;
|
||||
/* number of ChainPosRule tables */
|
||||
TTO_ChainPosRule* ChainPosRule; /* array of ChainPosRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainPosRuleSet_ TTO_ChainPosRuleSet;
|
||||
|
||||
|
||||
struct TTO_ChainContextPosFormat1_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort ChainPosRuleSetCount;
|
||||
/* number of ChainPosRuleSet tables */
|
||||
TTO_ChainPosRuleSet* ChainPosRuleSet;
|
||||
/* array of ChainPosRuleSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextPosFormat1_ TTO_ChainContextPosFormat1;
|
||||
|
||||
|
||||
struct TTO_ChainPosClassRule_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* total number of backtrack
|
||||
classes */
|
||||
FT_UShort* Backtrack; /* array of backtrack classes */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* total number of context classes */
|
||||
FT_UShort* Input; /* array of context classes */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* total number of lookahead
|
||||
classes */
|
||||
FT_UShort* Lookahead; /* array of lookahead classes */
|
||||
FT_UShort PosCount; /* number of PosLookupRecords */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of substitution lookups */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainPosClassRule_ TTO_ChainPosClassRule;
|
||||
|
||||
|
||||
struct TTO_ChainPosClassSet_
|
||||
{
|
||||
FT_UShort ChainPosClassRuleCount;
|
||||
/* number of ChainPosClassRule
|
||||
tables */
|
||||
TTO_ChainPosClassRule* ChainPosClassRule;
|
||||
/* array of ChainPosClassRule
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainPosClassSet_ TTO_ChainPosClassSet;
|
||||
|
||||
|
||||
/* The `MaxXXXLength' fields are not defined in the TTO specification
|
||||
but simplifies the implementation of this format. It holds the
|
||||
maximal context length used in the specific context rules. */
|
||||
|
||||
struct TTO_ChainContextPosFormat2_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
|
||||
FT_UShort MaxBacktrackLength;
|
||||
/* maximal backtrack length */
|
||||
TTO_ClassDefinition BacktrackClassDef;
|
||||
/* BacktrackClassDef table */
|
||||
FT_UShort MaxInputLength;
|
||||
/* maximal input length */
|
||||
TTO_ClassDefinition InputClassDef;
|
||||
/* InputClassDef table */
|
||||
FT_UShort MaxLookaheadLength;
|
||||
/* maximal lookahead length */
|
||||
TTO_ClassDefinition LookaheadClassDef;
|
||||
/* LookaheadClassDef table */
|
||||
|
||||
FT_UShort ChainPosClassSetCount;
|
||||
/* number of ChainPosClassSet
|
||||
tables */
|
||||
TTO_ChainPosClassSet* ChainPosClassSet;
|
||||
/* array of ChainPosClassSet
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextPosFormat2_ TTO_ChainContextPosFormat2;
|
||||
|
||||
|
||||
struct TTO_ChainContextPosFormat3_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* number of backtrack glyphs */
|
||||
TTO_Coverage* BacktrackCoverage;
|
||||
/* array of backtrack Coverage
|
||||
tables */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* number of input glyphs */
|
||||
TTO_Coverage* InputCoverage;
|
||||
/* array of input coverage
|
||||
tables */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* number of lookahead glyphs */
|
||||
TTO_Coverage* LookaheadCoverage;
|
||||
/* array of lookahead coverage
|
||||
tables */
|
||||
FT_UShort PosCount; /* number of PosLookupRecords */
|
||||
TTO_PosLookupRecord* PosLookupRecord;
|
||||
/* array of substitution lookups */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextPosFormat3_ TTO_ChainContextPosFormat3;
|
||||
|
||||
|
||||
struct TTO_ChainContextPos_
|
||||
{
|
||||
FT_UShort PosFormat; /* 1, 2, or 3 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_ChainContextPosFormat1 ccpf1;
|
||||
TTO_ChainContextPosFormat2 ccpf2;
|
||||
TTO_ChainContextPosFormat3 ccpf3;
|
||||
} ccpf;
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextPos_ TTO_ChainContextPos;
|
||||
|
||||
|
||||
union TTO_GPOS_SubTable_
|
||||
{
|
||||
TTO_SinglePos single;
|
||||
TTO_PairPos pair;
|
||||
TTO_CursivePos cursive;
|
||||
TTO_MarkBasePos markbase;
|
||||
TTO_MarkLigPos marklig;
|
||||
TTO_MarkMarkPos markmark;
|
||||
TTO_ContextPos context;
|
||||
TTO_ChainContextPos chain;
|
||||
};
|
||||
|
||||
typedef union TTO_GPOS_SubTable_ TTO_GPOS_SubTable;
|
||||
|
||||
|
||||
/* This `string object' is much simpler compared to TTO_GSUB_String.
|
||||
A call to TTO_GPOS_Apply_String() will allocate it. */
|
||||
|
||||
struct TTO_GPOS_Data_
|
||||
{
|
||||
FT_Pos x_pos;
|
||||
FT_Pos y_pos;
|
||||
FT_Pos x_advance;
|
||||
FT_Pos y_advance;
|
||||
FT_UShort back; /* number of glyphs to go back
|
||||
for drawing current glyph */
|
||||
FT_Bool new_advance; /* if set, the advance width values are
|
||||
absolute, i.e., they won't be
|
||||
added to the original glyph's value
|
||||
but rather replace them. */
|
||||
};
|
||||
|
||||
typedef struct TTO_GPOS_Data_ TTO_GPOS_Data;
|
||||
|
||||
|
||||
/* finally, the GPOS API */
|
||||
|
||||
/* EXPORT_DEF
|
||||
FT_Export ( FT_Error ) TT_Init_GPOS_Extension( TT_Engine engine ); */
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Load_GPOS_Table( FT_Face face,
|
||||
TTO_GPOSHeader** gpos,
|
||||
TTO_GDEFHeader* gdef );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Done_GPOS_Table( TTO_GPOSHeader* gpos );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Select_Script( TTO_GPOSHeader* gpos,
|
||||
FT_ULong script_tag,
|
||||
FT_UShort* script_index );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Select_Language( TTO_GPOSHeader* gpos,
|
||||
FT_ULong language_tag,
|
||||
FT_UShort script_index,
|
||||
FT_UShort* language_index,
|
||||
FT_UShort* req_feature_index );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Select_Feature( TTO_GPOSHeader* gpos,
|
||||
FT_ULong feature_tag,
|
||||
FT_UShort script_index,
|
||||
FT_UShort language_index,
|
||||
FT_UShort* feature_index );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Query_Scripts( TTO_GPOSHeader* gpos,
|
||||
FT_ULong** script_tag_list );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Query_Languages( TTO_GPOSHeader* gpos,
|
||||
FT_UShort script_index,
|
||||
FT_ULong** language_tag_list );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Query_Features( TTO_GPOSHeader* gpos,
|
||||
FT_UShort script_index,
|
||||
FT_UShort language_index,
|
||||
FT_ULong** feature_tag_list );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Add_Feature( TTO_GPOSHeader* gpos,
|
||||
FT_UShort feature_index,
|
||||
FT_UShort property );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Clear_Features( TTO_GPOSHeader* gpos );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Register_Glyph_Function( TTO_GPOSHeader* gpos,
|
||||
TTO_GlyphFunction gfunc );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Register_MM_Function( TTO_GPOSHeader* gpos,
|
||||
TTO_MMFunction mmfunc,
|
||||
void* data );
|
||||
|
||||
/* If `dvi' is TRUE, glyph contour points for anchor points and device
|
||||
tables are ignored -- you will get device independent values. */
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GPOS_Apply_String( FT_Face face,
|
||||
TTO_GPOSHeader* gpos,
|
||||
FT_UShort load_flags,
|
||||
TTO_GSUB_String* in,
|
||||
TTO_GPOS_Data** out,
|
||||
FT_Bool dvi,
|
||||
FT_Bool r2l );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* FTXGPOS_H */
|
||||
|
||||
|
||||
/* END */
|
||||
4531
src/ftxgsub.c
Normal file
4531
src/ftxgsub.c
Normal file
File diff suppressed because it is too large
Load Diff
612
src/ftxgsub.h
Normal file
612
src/ftxgsub.h
Normal file
@ -0,0 +1,612 @@
|
||||
/*******************************************************************
|
||||
*
|
||||
* ftxgsub.h
|
||||
*
|
||||
* TrueType Open GSUB table support
|
||||
*
|
||||
* Copyright 1996-2000 by
|
||||
* David Turner, Robert Wilhelm, and Werner Lemberg.
|
||||
*
|
||||
* This file is part of the FreeType project, and may only be used
|
||||
* modified and distributed under the terms of the FreeType project
|
||||
* license, LICENSE.TXT. By continuing to use, modify, or distribute
|
||||
* this file you indicate that you have read the license and
|
||||
* understand and accept it fully.
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
#ifndef FTXOPEN_H
|
||||
#error "Don't include this file! Use ftxopen.h instead."
|
||||
#endif
|
||||
|
||||
#ifndef FTXGSUB_H
|
||||
#define FTXGSUB_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define TTO_Err_Invalid_GSUB_SubTable_Format 0x1010
|
||||
#define TTO_Err_Invalid_GSUB_SubTable 0x1011
|
||||
|
||||
|
||||
/* Lookup types for glyph substitution */
|
||||
|
||||
#define GSUB_LOOKUP_SINGLE 1
|
||||
#define GSUB_LOOKUP_MULTIPLE 2
|
||||
#define GSUB_LOOKUP_ALTERNATE 3
|
||||
#define GSUB_LOOKUP_LIGATURE 4
|
||||
#define GSUB_LOOKUP_CONTEXT 5
|
||||
#define GSUB_LOOKUP_CHAIN 6
|
||||
|
||||
|
||||
/* Use this if a feature applies to all glyphs */
|
||||
|
||||
#define ALL_GLYPHS 0xFFFF
|
||||
|
||||
|
||||
/* A pointer to a function which selects the alternate glyph. `pos' is
|
||||
the position of the glyph with index `glyphID', `num_alternates'
|
||||
gives the number of alternates in the `alternates' array. `data'
|
||||
points to the user-defined structure specified during a call to
|
||||
TT_GSUB_Register_Alternate_Function(). The function must return an
|
||||
index into the `alternates' array. */
|
||||
|
||||
typedef FT_UShort (*TTO_AltFunction)(FT_ULong pos,
|
||||
FT_UShort glyphID,
|
||||
FT_UShort num_alternates,
|
||||
FT_UShort* alternates,
|
||||
void* data );
|
||||
|
||||
|
||||
struct TTO_GSUBHeader_
|
||||
{
|
||||
FT_Memory memory;
|
||||
|
||||
FT_ULong offset;
|
||||
|
||||
FT_Fixed Version;
|
||||
|
||||
TTO_ScriptList ScriptList;
|
||||
TTO_FeatureList FeatureList;
|
||||
TTO_LookupList LookupList;
|
||||
|
||||
TTO_GDEFHeader* gdef;
|
||||
|
||||
/* the next two fields are used for an alternate substitution callback
|
||||
function to select the proper alternate glyph. */
|
||||
|
||||
TTO_AltFunction altfunc;
|
||||
void* data;
|
||||
};
|
||||
|
||||
typedef struct TTO_GSUBHeader_ TTO_GSUBHeader;
|
||||
typedef struct TTO_GSUBHeader_* TTO_GSUB;
|
||||
|
||||
|
||||
/* LookupType 1 */
|
||||
|
||||
struct TTO_SingleSubstFormat1_
|
||||
{
|
||||
FT_Short DeltaGlyphID; /* constant added to get
|
||||
substitution glyph index */
|
||||
};
|
||||
|
||||
typedef struct TTO_SingleSubstFormat1_ TTO_SingleSubstFormat1;
|
||||
|
||||
|
||||
struct TTO_SingleSubstFormat2_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of glyph IDs in
|
||||
Substitute array */
|
||||
FT_UShort* Substitute; /* array of substitute glyph IDs */
|
||||
};
|
||||
|
||||
typedef struct TTO_SingleSubstFormat2_ TTO_SingleSubstFormat2;
|
||||
|
||||
|
||||
struct TTO_SingleSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* 1 or 2 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_SingleSubstFormat1 ssf1;
|
||||
TTO_SingleSubstFormat2 ssf2;
|
||||
} ssf;
|
||||
};
|
||||
|
||||
typedef struct TTO_SingleSubst_ TTO_SingleSubst;
|
||||
|
||||
|
||||
/* LookupType 2 */
|
||||
|
||||
struct TTO_Sequence_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of glyph IDs in the
|
||||
Substitute array */
|
||||
FT_UShort* Substitute; /* string of glyph IDs to
|
||||
substitute */
|
||||
};
|
||||
|
||||
typedef struct TTO_Sequence_ TTO_Sequence;
|
||||
|
||||
|
||||
struct TTO_MultipleSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* always 1 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort SequenceCount; /* number of Sequence tables */
|
||||
TTO_Sequence* Sequence; /* array of Sequence tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_MultipleSubst_ TTO_MultipleSubst;
|
||||
|
||||
|
||||
/* LookupType 3 */
|
||||
|
||||
struct TTO_AlternateSet_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of glyph IDs in the
|
||||
Alternate array */
|
||||
FT_UShort* Alternate; /* array of alternate glyph IDs */
|
||||
};
|
||||
|
||||
typedef struct TTO_AlternateSet_ TTO_AlternateSet;
|
||||
|
||||
|
||||
struct TTO_AlternateSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* always 1 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort AlternateSetCount;
|
||||
/* number of AlternateSet tables */
|
||||
TTO_AlternateSet* AlternateSet; /* array of AlternateSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_AlternateSubst_ TTO_AlternateSubst;
|
||||
|
||||
|
||||
/* LookupType 4 */
|
||||
|
||||
struct TTO_Ligature_
|
||||
{
|
||||
FT_UShort LigGlyph; /* glyphID of ligature
|
||||
to substitute */
|
||||
FT_UShort ComponentCount; /* number of components in ligature */
|
||||
FT_UShort* Component; /* array of component glyph IDs */
|
||||
};
|
||||
|
||||
typedef struct TTO_Ligature_ TTO_Ligature;
|
||||
|
||||
|
||||
struct TTO_LigatureSet_
|
||||
{
|
||||
FT_UShort LigatureCount; /* number of Ligature tables */
|
||||
TTO_Ligature* Ligature; /* array of Ligature tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigatureSet_ TTO_LigatureSet;
|
||||
|
||||
|
||||
struct TTO_LigatureSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* always 1 */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort LigatureSetCount; /* number of LigatureSet tables */
|
||||
TTO_LigatureSet* LigatureSet; /* array of LigatureSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_LigatureSubst_ TTO_LigatureSubst;
|
||||
|
||||
|
||||
/* needed by both lookup type 5 and 6 */
|
||||
|
||||
struct TTO_SubstLookupRecord_
|
||||
{
|
||||
FT_UShort SequenceIndex; /* index into current
|
||||
glyph sequence */
|
||||
FT_UShort LookupListIndex; /* Lookup to apply to that pos. */
|
||||
};
|
||||
|
||||
typedef struct TTO_SubstLookupRecord_ TTO_SubstLookupRecord;
|
||||
|
||||
|
||||
/* LookupType 5 */
|
||||
|
||||
struct TTO_SubRule_
|
||||
{
|
||||
FT_UShort GlyphCount; /* total number of input glyphs */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecord
|
||||
tables */
|
||||
FT_UShort* Input; /* array of input glyph IDs */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of SubstLookupRecord
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_SubRule_ TTO_SubRule;
|
||||
|
||||
|
||||
struct TTO_SubRuleSet_
|
||||
{
|
||||
FT_UShort SubRuleCount; /* number of SubRule tables */
|
||||
TTO_SubRule* SubRule; /* array of SubRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_SubRuleSet_ TTO_SubRuleSet;
|
||||
|
||||
|
||||
struct TTO_ContextSubstFormat1_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort SubRuleSetCount; /* number of SubRuleSet tables */
|
||||
TTO_SubRuleSet* SubRuleSet; /* array of SubRuleSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextSubstFormat1_ TTO_ContextSubstFormat1;
|
||||
|
||||
|
||||
struct TTO_SubClassRule_
|
||||
{
|
||||
FT_UShort GlyphCount; /* total number of context classes */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecord
|
||||
tables */
|
||||
FT_UShort* Class; /* array of classes */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of SubstLookupRecord
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_SubClassRule_ TTO_SubClassRule;
|
||||
|
||||
|
||||
struct TTO_SubClassSet_
|
||||
{
|
||||
FT_UShort SubClassRuleCount;
|
||||
/* number of SubClassRule tables */
|
||||
TTO_SubClassRule* SubClassRule; /* array of SubClassRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_SubClassSet_ TTO_SubClassSet;
|
||||
|
||||
|
||||
/* The `MaxContextLength' field is not defined in the TTO specification
|
||||
but simplifies the implementation of this format. It holds the
|
||||
maximal context length used in the context rules. */
|
||||
|
||||
struct TTO_ContextSubstFormat2_
|
||||
{
|
||||
FT_UShort MaxContextLength;
|
||||
/* maximal context length */
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
TTO_ClassDefinition ClassDef; /* ClassDef table */
|
||||
FT_UShort SubClassSetCount;
|
||||
/* number of SubClassSet tables */
|
||||
TTO_SubClassSet* SubClassSet; /* array of SubClassSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextSubstFormat2_ TTO_ContextSubstFormat2;
|
||||
|
||||
|
||||
struct TTO_ContextSubstFormat3_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of input glyphs */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecords */
|
||||
TTO_Coverage* Coverage; /* array of Coverage tables */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of substitution lookups */
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextSubstFormat3_ TTO_ContextSubstFormat3;
|
||||
|
||||
|
||||
struct TTO_ContextSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* 1, 2, or 3 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_ContextSubstFormat1 csf1;
|
||||
TTO_ContextSubstFormat2 csf2;
|
||||
TTO_ContextSubstFormat3 csf3;
|
||||
} csf;
|
||||
};
|
||||
|
||||
typedef struct TTO_ContextSubst_ TTO_ContextSubst;
|
||||
|
||||
|
||||
/* LookupType 6 */
|
||||
|
||||
struct TTO_ChainSubRule_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* total number of backtrack glyphs */
|
||||
FT_UShort* Backtrack; /* array of backtrack glyph IDs */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* total number of input glyphs */
|
||||
FT_UShort* Input; /* array of input glyph IDs */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* total number of lookahead glyphs */
|
||||
FT_UShort* Lookahead; /* array of lookahead glyph IDs */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecords */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of SubstLookupRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainSubRule_ TTO_ChainSubRule;
|
||||
|
||||
|
||||
struct TTO_ChainSubRuleSet_
|
||||
{
|
||||
FT_UShort ChainSubRuleCount;
|
||||
/* number of ChainSubRule tables */
|
||||
TTO_ChainSubRule* ChainSubRule; /* array of ChainSubRule tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainSubRuleSet_ TTO_ChainSubRuleSet;
|
||||
|
||||
|
||||
struct TTO_ChainContextSubstFormat1_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
FT_UShort ChainSubRuleSetCount;
|
||||
/* number of ChainSubRuleSet tables */
|
||||
TTO_ChainSubRuleSet* ChainSubRuleSet;
|
||||
/* array of ChainSubRuleSet tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextSubstFormat1_ TTO_ChainContextSubstFormat1;
|
||||
|
||||
|
||||
struct TTO_ChainSubClassRule_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* total number of backtrack
|
||||
classes */
|
||||
FT_UShort* Backtrack; /* array of backtrack classes */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* total number of context classes */
|
||||
FT_UShort* Input; /* array of context classes */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* total number of lookahead
|
||||
classes */
|
||||
FT_UShort* Lookahead; /* array of lookahead classes */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecords */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of substitution lookups */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainSubClassRule_ TTO_ChainSubClassRule;
|
||||
|
||||
|
||||
struct TTO_ChainSubClassSet_
|
||||
{
|
||||
FT_UShort ChainSubClassRuleCount;
|
||||
/* number of ChainSubClassRule
|
||||
tables */
|
||||
TTO_ChainSubClassRule* ChainSubClassRule;
|
||||
/* array of ChainSubClassRule
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainSubClassSet_ TTO_ChainSubClassSet;
|
||||
|
||||
|
||||
/* The `MaxXXXLength' fields are not defined in the TTO specification
|
||||
but simplifies the implementation of this format. It holds the
|
||||
maximal context length used in the specific context rules. */
|
||||
|
||||
struct TTO_ChainContextSubstFormat2_
|
||||
{
|
||||
TTO_Coverage Coverage; /* Coverage table */
|
||||
|
||||
FT_UShort MaxBacktrackLength;
|
||||
/* maximal backtrack length */
|
||||
TTO_ClassDefinition BacktrackClassDef;
|
||||
/* BacktrackClassDef table */
|
||||
FT_UShort MaxInputLength;
|
||||
/* maximal input length */
|
||||
TTO_ClassDefinition InputClassDef;
|
||||
/* InputClassDef table */
|
||||
FT_UShort MaxLookaheadLength;
|
||||
/* maximal lookahead length */
|
||||
TTO_ClassDefinition LookaheadClassDef;
|
||||
/* LookaheadClassDef table */
|
||||
|
||||
FT_UShort ChainSubClassSetCount;
|
||||
/* number of ChainSubClassSet
|
||||
tables */
|
||||
TTO_ChainSubClassSet* ChainSubClassSet;
|
||||
/* array of ChainSubClassSet
|
||||
tables */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextSubstFormat2_ TTO_ChainContextSubstFormat2;
|
||||
|
||||
|
||||
struct TTO_ChainContextSubstFormat3_
|
||||
{
|
||||
FT_UShort BacktrackGlyphCount;
|
||||
/* number of backtrack glyphs */
|
||||
TTO_Coverage* BacktrackCoverage;
|
||||
/* array of backtrack Coverage
|
||||
tables */
|
||||
FT_UShort InputGlyphCount;
|
||||
/* number of input glyphs */
|
||||
TTO_Coverage* InputCoverage;
|
||||
/* array of input coverage
|
||||
tables */
|
||||
FT_UShort LookaheadGlyphCount;
|
||||
/* number of lookahead glyphs */
|
||||
TTO_Coverage* LookaheadCoverage;
|
||||
/* array of lookahead coverage
|
||||
tables */
|
||||
FT_UShort SubstCount; /* number of SubstLookupRecords */
|
||||
TTO_SubstLookupRecord* SubstLookupRecord;
|
||||
/* array of substitution lookups */
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextSubstFormat3_ TTO_ChainContextSubstFormat3;
|
||||
|
||||
|
||||
struct TTO_ChainContextSubst_
|
||||
{
|
||||
FT_UShort SubstFormat; /* 1, 2, or 3 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_ChainContextSubstFormat1 ccsf1;
|
||||
TTO_ChainContextSubstFormat2 ccsf2;
|
||||
TTO_ChainContextSubstFormat3 ccsf3;
|
||||
} ccsf;
|
||||
};
|
||||
|
||||
typedef struct TTO_ChainContextSubst_ TTO_ChainContextSubst;
|
||||
|
||||
|
||||
union TTO_GSUB_SubTable_
|
||||
{
|
||||
TTO_SingleSubst single;
|
||||
TTO_MultipleSubst multiple;
|
||||
TTO_AlternateSubst alternate;
|
||||
TTO_LigatureSubst ligature;
|
||||
TTO_ContextSubst context;
|
||||
TTO_ChainContextSubst chain;
|
||||
};
|
||||
|
||||
typedef union TTO_GSUB_SubTable_ TTO_GSUB_SubTable;
|
||||
|
||||
|
||||
/* A simple string object. It can both `send' and `receive' data.
|
||||
In case of sending, `length' and `pos' will be used. In case of
|
||||
receiving, `pos' points to the first free slot, and `allocated'
|
||||
specifies the amount of allocated memory (and the `length' field
|
||||
will be ignored). The routine TT_Add_String() will increase the
|
||||
amount of memory if necessary. After end of receive, `length'
|
||||
should be set to the value of `pos', and `pos' will be set to zero.
|
||||
|
||||
`properties' (which is treated as a bit field) gives the glyph's
|
||||
properties: If a certain bit is set for a glyph, the feature which
|
||||
has the same bit set in its property value is applied.
|
||||
|
||||
`components' is an internal array which tracks components of
|
||||
ligatures. We need this for MarkToLigature Attachment Positioning
|
||||
Subtables (in GPOS) together with `ligIDs' (which is used to mark
|
||||
ligatures and the skipped glyphs during a ligature lookup).
|
||||
`max_ligID' is increased after a successful ligature lookup.
|
||||
|
||||
NEVER modify any elements of the structure! You should rather copy
|
||||
its contents if necessary.
|
||||
|
||||
TT_Add_String() will also handle allocation; you should use
|
||||
free() in case you want to destroy the arrays in the object. */
|
||||
|
||||
struct TTO_GSUB_String_
|
||||
{
|
||||
FT_Memory memory;
|
||||
|
||||
FT_ULong length;
|
||||
FT_ULong pos;
|
||||
FT_ULong allocated;
|
||||
FT_UShort* string;
|
||||
FT_UShort* properties;
|
||||
FT_UShort* components;
|
||||
FT_UShort max_ligID;
|
||||
FT_UShort* ligIDs;
|
||||
FT_Int* logClusters;
|
||||
};
|
||||
|
||||
typedef struct TTO_GSUB_String_ TTO_GSUB_String;
|
||||
|
||||
|
||||
/* finally, the GSUB API */
|
||||
|
||||
/* EXPORT_DEF
|
||||
TT_Error TT_Init_GSUB_Extension( TT_Engine engine ); */
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Load_GSUB_Table( FT_Face face,
|
||||
TTO_GSUBHeader** gsub,
|
||||
TTO_GDEFHeader* gdef );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_Done_GSUB_Table( TTO_GSUBHeader* gsub );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Select_Script( TTO_GSUBHeader* gsub,
|
||||
FT_ULong script_tag,
|
||||
FT_UShort* script_index );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Select_Language( TTO_GSUBHeader* gsub,
|
||||
FT_ULong language_tag,
|
||||
FT_UShort script_index,
|
||||
FT_UShort* language_index,
|
||||
FT_UShort* req_feature_index );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Select_Feature( TTO_GSUBHeader* gsub,
|
||||
FT_ULong feature_tag,
|
||||
FT_UShort script_index,
|
||||
FT_UShort language_index,
|
||||
FT_UShort* feature_index );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Query_Scripts( TTO_GSUBHeader* gsub,
|
||||
FT_ULong** script_tag_list );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Query_Languages( TTO_GSUBHeader* gsub,
|
||||
FT_UShort script_index,
|
||||
FT_ULong** language_tag_list );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Query_Features( TTO_GSUBHeader* gsub,
|
||||
FT_UShort script_index,
|
||||
FT_UShort language_index,
|
||||
FT_ULong** feature_tag_list );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Add_Feature( TTO_GSUBHeader* gsub,
|
||||
FT_UShort feature_index,
|
||||
FT_UShort property );
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Clear_Features( TTO_GSUBHeader* gsub );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Register_Alternate_Function( TTO_GSUBHeader* gsub,
|
||||
TTO_AltFunction altfunc,
|
||||
void* data );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_String_New( FT_Memory memory,
|
||||
TTO_GSUB_String **result );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_String_Set_Length( TTO_GSUB_String *str,
|
||||
FT_ULong new_length);
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_String_Done( TTO_GSUB_String *str );
|
||||
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Apply_String( TTO_GSUBHeader* gsub,
|
||||
TTO_GSUB_String* in,
|
||||
TTO_GSUB_String* out );
|
||||
|
||||
EXPORT_DEF
|
||||
FT_Error TT_GSUB_Add_String( TTO_GSUB_String* in,
|
||||
FT_UShort num_in,
|
||||
TTO_GSUB_String* out,
|
||||
FT_UShort num_out,
|
||||
FT_UShort* glyph_data,
|
||||
FT_UShort component,
|
||||
FT_UShort ligID );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* FTXGSUB_H */
|
||||
|
||||
|
||||
/* END */
|
||||
1467
src/ftxopen.c
Normal file
1467
src/ftxopen.c
Normal file
File diff suppressed because it is too large
Load Diff
308
src/ftxopen.h
Normal file
308
src/ftxopen.h
Normal file
@ -0,0 +1,308 @@
|
||||
/*******************************************************************
|
||||
*
|
||||
* ftxopen.h
|
||||
*
|
||||
* TrueType Open support.
|
||||
*
|
||||
* Copyright 1996-2000 by
|
||||
* David Turner, Robert Wilhelm, and Werner Lemberg.
|
||||
*
|
||||
* This file is part of the FreeType project, and may only be used
|
||||
* modified and distributed under the terms of the FreeType project
|
||||
* license, LICENSE.TXT. By continuing to use, modify, or distribute
|
||||
* this file you indicate that you have read the license and
|
||||
* understand and accept it fully.
|
||||
*
|
||||
* This file should be included by the application. Nevertheless,
|
||||
* the table specific APIs (and structures) are located in files like
|
||||
* ftxgsub.h or ftxgpos.h; these header files are read by ftxopen.h .
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
#ifndef FTXOPEN_H
|
||||
#define FTXOPEN_H
|
||||
|
||||
#include <freetype/freetype.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define EXPORT_DEF
|
||||
#define EXPORT_FUNC
|
||||
|
||||
#define TTO_MAX_NESTING_LEVEL 100
|
||||
|
||||
#define TTO_Err_Invalid_SubTable_Format 0x1000
|
||||
#define TTO_Err_Invalid_SubTable 0x1001
|
||||
#define TTO_Err_Not_Covered 0x1002
|
||||
#define TTO_Err_Too_Many_Nested_Contexts 0x1003
|
||||
#define TTO_Err_No_MM_Interpreter 0x1004
|
||||
|
||||
|
||||
/* Script list related structures */
|
||||
|
||||
struct TTO_LangSys_
|
||||
{
|
||||
FT_UShort LookupOrderOffset; /* always 0 for TT Open 1.0 */
|
||||
FT_UShort ReqFeatureIndex; /* required FeatureIndex */
|
||||
FT_UShort FeatureCount; /* number of Feature indices */
|
||||
FT_UShort* FeatureIndex; /* array of Feature indices */
|
||||
};
|
||||
|
||||
typedef struct TTO_LangSys_ TTO_LangSys;
|
||||
|
||||
|
||||
struct TTO_LangSysRecord_
|
||||
{
|
||||
FT_ULong LangSysTag; /* LangSysTag identifier */
|
||||
TTO_LangSys LangSys; /* LangSys table */
|
||||
};
|
||||
|
||||
typedef struct TTO_LangSysRecord_ TTO_LangSysRecord;
|
||||
|
||||
|
||||
struct TTO_Script_
|
||||
{
|
||||
TTO_LangSys DefaultLangSys; /* DefaultLangSys table */
|
||||
FT_UShort LangSysCount; /* number of LangSysRecords */
|
||||
TTO_LangSysRecord* LangSysRecord; /* array of LangSysRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_Script_ TTO_Script;
|
||||
|
||||
|
||||
struct TTO_ScriptRecord_
|
||||
{
|
||||
FT_ULong ScriptTag; /* ScriptTag identifier */
|
||||
TTO_Script Script; /* Script table */
|
||||
};
|
||||
|
||||
typedef struct TTO_ScriptRecord_ TTO_ScriptRecord;
|
||||
|
||||
|
||||
struct TTO_ScriptList_
|
||||
{
|
||||
FT_UShort ScriptCount; /* number of ScriptRecords */
|
||||
TTO_ScriptRecord* ScriptRecord; /* array of ScriptRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_ScriptList_ TTO_ScriptList;
|
||||
|
||||
|
||||
/* Feature list related structures */
|
||||
|
||||
struct TTO_Feature_
|
||||
{
|
||||
FT_UShort FeatureParams; /* always 0 for TT Open 1.0 */
|
||||
FT_UShort LookupListCount; /* number of LookupList indices */
|
||||
FT_UShort* LookupListIndex; /* array of LookupList indices */
|
||||
};
|
||||
|
||||
typedef struct TTO_Feature_ TTO_Feature;
|
||||
|
||||
|
||||
struct TTO_FeatureRecord_
|
||||
{
|
||||
FT_ULong FeatureTag; /* FeatureTag identifier */
|
||||
TTO_Feature Feature; /* Feature table */
|
||||
};
|
||||
|
||||
typedef struct TTO_FeatureRecord_ TTO_FeatureRecord;
|
||||
|
||||
|
||||
struct TTO_FeatureList_
|
||||
{
|
||||
FT_UShort FeatureCount; /* number of FeatureRecords */
|
||||
TTO_FeatureRecord* FeatureRecord; /* array of FeatureRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_FeatureList_ TTO_FeatureList;
|
||||
|
||||
|
||||
/* Lookup list related structures */
|
||||
|
||||
struct TTO_SubTable_; /* defined below after inclusion
|
||||
of ftxgsub.h and ftxgpos.h */
|
||||
typedef struct TTO_SubTable_ TTO_SubTable;
|
||||
|
||||
|
||||
struct TTO_Lookup_
|
||||
{
|
||||
FT_UShort LookupType; /* Lookup type */
|
||||
FT_UShort LookupFlag; /* Lookup qualifiers */
|
||||
FT_UShort SubTableCount; /* number of SubTables */
|
||||
TTO_SubTable* SubTable; /* array of SubTables */
|
||||
};
|
||||
|
||||
typedef struct TTO_Lookup_ TTO_Lookup;
|
||||
|
||||
|
||||
/* The `Properties' field is not defined in the TTO specification but
|
||||
is needed for processing lookups. If properties[n] is > 0, the
|
||||
functions TT_GSUB_Apply_String() resp. TT_GPOS_Apply_String() will
|
||||
process Lookup[n] for glyphs which have the specific bit not set in
|
||||
the `properties' field of the input string object. */
|
||||
|
||||
struct TTO_LookupList_
|
||||
{
|
||||
FT_UShort LookupCount; /* number of Lookups */
|
||||
TTO_Lookup* Lookup; /* array of Lookup records */
|
||||
FT_UShort* Properties; /* array of flags */
|
||||
};
|
||||
|
||||
typedef struct TTO_LookupList_ TTO_LookupList;
|
||||
|
||||
|
||||
/* Possible LookupFlag bit masks. `IGNORE_SPECIAL_MARKS' comes from the
|
||||
OpenType 1.2 specification. */
|
||||
|
||||
#define IGNORE_BASE_GLYPHS 0x0002
|
||||
#define IGNORE_LIGATURES 0x0004
|
||||
#define IGNORE_MARKS 0x0008
|
||||
#define IGNORE_SPECIAL_MARKS 0xFF00
|
||||
|
||||
|
||||
struct TTO_CoverageFormat1_
|
||||
{
|
||||
FT_UShort GlyphCount; /* number of glyphs in GlyphArray */
|
||||
FT_UShort* GlyphArray; /* array of glyph IDs */
|
||||
};
|
||||
|
||||
typedef struct TTO_CoverageFormat1_ TTO_CoverageFormat1;
|
||||
|
||||
|
||||
struct TTO_RangeRecord_
|
||||
{
|
||||
FT_UShort Start; /* first glyph ID in the range */
|
||||
FT_UShort End; /* last glyph ID in the range */
|
||||
FT_UShort StartCoverageIndex; /* coverage index of first
|
||||
glyph ID in the range */
|
||||
};
|
||||
|
||||
typedef struct TTO_RangeRecord_ TTO_RangeRecord;
|
||||
|
||||
|
||||
struct TTO_CoverageFormat2_
|
||||
{
|
||||
FT_UShort RangeCount; /* number of RangeRecords */
|
||||
TTO_RangeRecord* RangeRecord; /* array of RangeRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_CoverageFormat2_ TTO_CoverageFormat2;
|
||||
|
||||
|
||||
struct TTO_Coverage_
|
||||
{
|
||||
FT_UShort CoverageFormat; /* 1 or 2 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_CoverageFormat1 cf1;
|
||||
TTO_CoverageFormat2 cf2;
|
||||
} cf;
|
||||
};
|
||||
|
||||
typedef struct TTO_Coverage_ TTO_Coverage;
|
||||
|
||||
|
||||
struct TTO_ClassDefFormat1_
|
||||
{
|
||||
FT_UShort StartGlyph; /* first glyph ID of the
|
||||
ClassValueArray */
|
||||
FT_UShort GlyphCount; /* size of the ClassValueArray */
|
||||
FT_UShort* ClassValueArray; /* array of class values */
|
||||
};
|
||||
|
||||
typedef struct TTO_ClassDefFormat1_ TTO_ClassDefFormat1;
|
||||
|
||||
|
||||
struct TTO_ClassRangeRecord_
|
||||
{
|
||||
FT_UShort Start; /* first glyph ID in the range */
|
||||
FT_UShort End; /* last glyph ID in the range */
|
||||
FT_UShort Class; /* applied to all glyphs in range */
|
||||
};
|
||||
|
||||
typedef struct TTO_ClassRangeRecord_ TTO_ClassRangeRecord;
|
||||
|
||||
|
||||
struct TTO_ClassDefFormat2_
|
||||
{
|
||||
FT_UShort ClassRangeCount;
|
||||
/* number of ClassRangeRecords */
|
||||
TTO_ClassRangeRecord* ClassRangeRecord;
|
||||
/* array of ClassRangeRecords */
|
||||
};
|
||||
|
||||
typedef struct TTO_ClassDefFormat2_ TTO_ClassDefFormat2;
|
||||
|
||||
|
||||
/* The `Defined' field is not defined in the TTO specification but
|
||||
apparently needed for processing fonts like trado.ttf: This font
|
||||
refers to a class which contains not a single element. We map such
|
||||
classes to class 0. */
|
||||
|
||||
struct TTO_ClassDefinition_
|
||||
{
|
||||
FT_Bool loaded;
|
||||
|
||||
FT_Bool* Defined; /* array of Booleans.
|
||||
If Defined[n] is FALSE,
|
||||
class n contains no glyphs. */
|
||||
FT_UShort ClassFormat; /* 1 or 2 */
|
||||
|
||||
union
|
||||
{
|
||||
TTO_ClassDefFormat1 cd1;
|
||||
TTO_ClassDefFormat2 cd2;
|
||||
} cd;
|
||||
};
|
||||
|
||||
typedef struct TTO_ClassDefinition_ TTO_ClassDefinition;
|
||||
|
||||
|
||||
struct TTO_Device_
|
||||
{
|
||||
FT_UShort StartSize; /* smallest size to correct */
|
||||
FT_UShort EndSize; /* largest size to correct */
|
||||
FT_UShort DeltaFormat; /* DeltaValue array data format:
|
||||
1, 2, or 3 */
|
||||
FT_UShort* DeltaValue; /* array of compressed data */
|
||||
};
|
||||
|
||||
typedef struct TTO_Device_ TTO_Device;
|
||||
|
||||
|
||||
#include "ftxgdef.h"
|
||||
#include "ftxgsub.h"
|
||||
#include "ftxgpos.h"
|
||||
|
||||
|
||||
struct TTO_SubTable_
|
||||
{
|
||||
union
|
||||
{
|
||||
TTO_GSUB_SubTable gsub;
|
||||
TTO_GPOS_SubTable gpos;
|
||||
} st;
|
||||
};
|
||||
|
||||
|
||||
enum TTO_Type_
|
||||
{
|
||||
GSUB,
|
||||
GPOS
|
||||
};
|
||||
|
||||
typedef enum TTO_Type_ TTO_Type;
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* FTXOPEN_H */
|
||||
|
||||
|
||||
/* END */
|
||||
161
src/ftxopenf.h
Normal file
161
src/ftxopenf.h
Normal file
@ -0,0 +1,161 @@
|
||||
/*******************************************************************
|
||||
*
|
||||
* ftxopenf.h
|
||||
*
|
||||
* internal TrueType Open functions
|
||||
*
|
||||
* Copyright 1996-2000 by
|
||||
* David Turner, Robert Wilhelm, and Werner Lemberg.
|
||||
*
|
||||
* This file is part of the FreeType project, and may only be used
|
||||
* modified and distributed under the terms of the FreeType project
|
||||
* license, LICENSE.TXT. By continuing to use, modify, or distribute
|
||||
* this file you indicate that you have read the license and
|
||||
* understand and accept it fully.
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
#ifndef FTXOPENF_H
|
||||
#define FTXOPENF_H
|
||||
|
||||
#include "ftxopen.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* functions from ftxopen.c */
|
||||
|
||||
FT_Error Load_ScriptList( TTO_ScriptList* sl,
|
||||
FT_Stream stream );
|
||||
FT_Error Load_FeatureList( TTO_FeatureList* fl,
|
||||
FT_Stream input );
|
||||
FT_Error Load_LookupList( TTO_LookupList* ll,
|
||||
FT_Stream input,
|
||||
TTO_Type type );
|
||||
|
||||
FT_Error Load_Coverage( TTO_Coverage* c,
|
||||
FT_Stream input );
|
||||
FT_Error Load_ClassDefinition( TTO_ClassDefinition* cd,
|
||||
FT_UShort limit,
|
||||
FT_Stream input );
|
||||
FT_Error Load_Device( TTO_Device* d,
|
||||
FT_Stream input );
|
||||
|
||||
void Free_ScriptList( TTO_ScriptList* sl,
|
||||
FT_Memory memory );
|
||||
void Free_FeatureList( TTO_FeatureList* fl,
|
||||
FT_Memory memory );
|
||||
void Free_LookupList( TTO_LookupList* ll,
|
||||
TTO_Type type,
|
||||
FT_Memory memory );
|
||||
|
||||
void Free_Coverage( TTO_Coverage* c,
|
||||
FT_Memory memory );
|
||||
void Free_ClassDefinition( TTO_ClassDefinition* cd,
|
||||
FT_Memory memory );
|
||||
void Free_Device( TTO_Device* d,
|
||||
FT_Memory memory );
|
||||
|
||||
|
||||
/* functions from ftxgsub.c */
|
||||
|
||||
FT_Error Load_SingleSubst( TTO_SingleSubst* ss,
|
||||
FT_Stream input );
|
||||
FT_Error Load_MultipleSubst( TTO_MultipleSubst* ms,
|
||||
FT_Stream input );
|
||||
FT_Error Load_AlternateSubst( TTO_AlternateSubst* as,
|
||||
FT_Stream input );
|
||||
FT_Error Load_LigatureSubst( TTO_LigatureSubst* ls,
|
||||
FT_Stream input );
|
||||
FT_Error Load_ContextSubst( TTO_ContextSubst* cs,
|
||||
FT_Stream input );
|
||||
FT_Error Load_ChainContextSubst( TTO_ChainContextSubst* ccs,
|
||||
FT_Stream input );
|
||||
|
||||
void Free_SingleSubst( TTO_SingleSubst* ss,
|
||||
FT_Memory memory );
|
||||
void Free_MultipleSubst( TTO_MultipleSubst* ms,
|
||||
FT_Memory memory );
|
||||
void Free_AlternateSubst( TTO_AlternateSubst* as,
|
||||
FT_Memory memory );
|
||||
void Free_LigatureSubst( TTO_LigatureSubst* ls,
|
||||
FT_Memory memory );
|
||||
void Free_ContextSubst( TTO_ContextSubst* cs,
|
||||
FT_Memory memory );
|
||||
void Free_ChainContextSubst( TTO_ChainContextSubst* ccs,
|
||||
FT_Memory memory );
|
||||
|
||||
|
||||
/* functions from ftxgpos.c */
|
||||
|
||||
FT_Error Load_SinglePos( TTO_SinglePos* sp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_PairPos( TTO_PairPos* pp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_CursivePos( TTO_CursivePos* cp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_MarkBasePos( TTO_MarkBasePos* mbp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_MarkLigPos( TTO_MarkLigPos* mlp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_MarkMarkPos( TTO_MarkMarkPos* mmp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_ContextPos( TTO_ContextPos* cp,
|
||||
FT_Stream input );
|
||||
FT_Error Load_ChainContextPos( TTO_ChainContextPos* ccp,
|
||||
FT_Stream input );
|
||||
|
||||
void Free_SinglePos( TTO_SinglePos* sp,
|
||||
FT_Memory memory );
|
||||
void Free_PairPos( TTO_PairPos* pp,
|
||||
FT_Memory memory );
|
||||
void Free_CursivePos( TTO_CursivePos* cp,
|
||||
FT_Memory memory );
|
||||
void Free_MarkBasePos( TTO_MarkBasePos* mbp,
|
||||
FT_Memory memory );
|
||||
void Free_MarkLigPos( TTO_MarkLigPos* mlp,
|
||||
FT_Memory memory );
|
||||
void Free_MarkMarkPos( TTO_MarkMarkPos* mmp,
|
||||
FT_Memory memory );
|
||||
void Free_ContextPos( TTO_ContextPos* cp,
|
||||
FT_Memory memory );
|
||||
void Free_ChainContextPos( TTO_ChainContextPos* ccp,
|
||||
FT_Memory memory );
|
||||
/* query functions */
|
||||
|
||||
FT_Error Coverage_Index( TTO_Coverage* c,
|
||||
FT_UShort glyphID,
|
||||
FT_UShort* index );
|
||||
FT_Error Get_Class( TTO_ClassDefinition* cd,
|
||||
FT_UShort glyphID,
|
||||
FT_UShort* class,
|
||||
FT_UShort* index );
|
||||
FT_Error Get_Device( TTO_Device* d,
|
||||
FT_UShort size,
|
||||
FT_Short* value );
|
||||
|
||||
|
||||
/* functions from ftxgdef.c */
|
||||
|
||||
FT_Error Add_Glyph_Property( TTO_GDEFHeader* gdef,
|
||||
FT_UShort glyphID,
|
||||
FT_UShort property );
|
||||
|
||||
FT_Error Check_Property( TTO_GDEFHeader* gdef,
|
||||
FT_UShort index,
|
||||
FT_UShort flags,
|
||||
FT_UShort* property );
|
||||
|
||||
#define CHECK_Property( gdef, index, flags, property ) \
|
||||
( ( error = Check_Property( (gdef), (index), (flags), \
|
||||
(property) ) ) != TT_Err_Ok )
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* FTXOPENF_H */
|
||||
|
||||
|
||||
/* END */
|
||||
265
src/ottest.c
Normal file
265
src/ottest.c
Normal file
@ -0,0 +1,265 @@
|
||||
/* Pango
|
||||
* otttest.c: Test program for OpenType
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "ftxopen.h"
|
||||
#include <freetype/internal/ftmemory.h>
|
||||
|
||||
#include "disasm.h"
|
||||
|
||||
#define N_ELEMENTS(arr) (sizeof(arr)/ sizeof((arr)[0]))
|
||||
|
||||
int
|
||||
croak (const char *situation, FT_Error error)
|
||||
{
|
||||
fprintf (stderr, "%s: Error %d\n", situation, error);
|
||||
|
||||
exit (1);
|
||||
}
|
||||
|
||||
enum {
|
||||
I = 1 << 0,
|
||||
M = 1 << 1,
|
||||
F = 1 << 2,
|
||||
L = 1 << 3
|
||||
};
|
||||
|
||||
void
|
||||
print_tag (FT_ULong tag)
|
||||
{
|
||||
fprintf (stderr, "%c%c%c%c",
|
||||
(unsigned char)(tag >> 24),
|
||||
(unsigned char)((tag & 0xff0000) >> 16),
|
||||
(unsigned char)((tag & 0xff00) >> 8),
|
||||
(unsigned char)(tag & 0xff));
|
||||
}
|
||||
|
||||
void
|
||||
maybe_add_feature (TTO_GSUB gsub,
|
||||
FT_UShort script_index,
|
||||
FT_ULong tag,
|
||||
FT_UShort property)
|
||||
{
|
||||
FT_Error error;
|
||||
FT_UShort feature_index;
|
||||
|
||||
/* 0xffff == default language system */
|
||||
error = TT_GSUB_Select_Feature (gsub, tag, script_index, 0xffff, &feature_index);
|
||||
|
||||
if (error)
|
||||
{
|
||||
if (error == TTO_Err_Not_Covered)
|
||||
{
|
||||
print_tag (tag);
|
||||
fprintf (stderr, " not covered, ignored\n");
|
||||
return;
|
||||
}
|
||||
|
||||
croak ("TT_GSUB_Select_Feature", error);
|
||||
}
|
||||
|
||||
if ((error = TT_GSUB_Add_Feature (gsub, feature_index, property)))
|
||||
croak ("TT_GSUB_Add_Feature", error);
|
||||
}
|
||||
|
||||
void
|
||||
select_cmap (FT_Face face)
|
||||
{
|
||||
FT_UShort i;
|
||||
FT_CharMap cmap = NULL;
|
||||
|
||||
for (i = 0; i < face->num_charmaps; i++)
|
||||
{
|
||||
if (face->charmaps[i]->platform_id == 3 && face->charmaps[i]->encoding_id == 1)
|
||||
{
|
||||
cmap = face->charmaps[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* we try only pid/eid (0,0) if no (3,1) map is found -- many Windows
|
||||
fonts have only rudimentary (0,0) support. */
|
||||
|
||||
if (!cmap)
|
||||
for (i = 0; i < face->num_charmaps; i++)
|
||||
{
|
||||
if (face->charmaps[i]->platform_id == 3 && face->charmaps[i]->encoding_id == 1)
|
||||
{
|
||||
cmap = face->charmaps[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (cmap)
|
||||
FT_Set_Charmap (face, cmap);
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "Sorry, but this font doesn't contain"
|
||||
" any Unicode mapping table.\n");
|
||||
exit (1);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
add_features (TTO_GSUB gsub)
|
||||
{
|
||||
FT_Error error;
|
||||
FT_ULong tag = FT_MAKE_TAG ('a', 'r', 'a', 'b');
|
||||
FT_UShort script_index;
|
||||
|
||||
error = TT_GSUB_Select_Script (gsub, tag, &script_index);
|
||||
|
||||
if (error)
|
||||
{
|
||||
if (error == TTO_Err_Not_Covered)
|
||||
{
|
||||
fprintf (stderr, "Arabic not covered, no features used\n");
|
||||
return;
|
||||
}
|
||||
|
||||
croak ("TT_GSUB_Select_Script", error);
|
||||
}
|
||||
|
||||
maybe_add_feature (gsub, script_index, FT_MAKE_TAG ('i', 'n', 'i', 't'), I);
|
||||
maybe_add_feature (gsub, script_index, FT_MAKE_TAG ('m', 'e', 'd', 'i'), M);
|
||||
maybe_add_feature (gsub, script_index, FT_MAKE_TAG ('f', 'i', 'n', 'a'), F);
|
||||
maybe_add_feature (gsub, script_index, FT_MAKE_TAG ('l', 'i', 'g', 'a'), L);
|
||||
}
|
||||
|
||||
void
|
||||
dump_string (TTO_GSUB_String *str)
|
||||
{
|
||||
int i;
|
||||
|
||||
fprintf (stderr, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
|
||||
for (i = 0; i < str->length; i++)
|
||||
{
|
||||
fprintf (stderr, "%2d: %#06x %#06x %4d %4d\n",
|
||||
i,
|
||||
str->string[i],
|
||||
str->properties[i],
|
||||
str->components[i],
|
||||
str->ligIDs[i]);
|
||||
}
|
||||
fprintf (stderr, "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n");
|
||||
}
|
||||
|
||||
FT_UShort arabic_str[] = { 0x645, 0x643, 0x64a, 0x644, 0x639, 0x20, 0x645, 0x627, 0x644, 0x633, 0x644, 0x627 };
|
||||
FT_UShort arabic_props[] = { I|L, M|L, M|L, M|L, M|L, F|L, I|L, M|L, M|L, M|L, M|L, F|L };
|
||||
|
||||
void
|
||||
try_string (FT_Library library,
|
||||
FT_Face face,
|
||||
TTO_GSUB gsub)
|
||||
{
|
||||
FT_Error error;
|
||||
TTO_GSUB_String *in_str;
|
||||
TTO_GSUB_String *out_str;
|
||||
int i;
|
||||
|
||||
if ((error = TT_GSUB_String_New (face->memory, &in_str)))
|
||||
croak ("TT_GSUB_String_New", error);
|
||||
if ((error = TT_GSUB_String_New (face->memory, &out_str)))
|
||||
croak ("TT_GSUB_String_New", error);
|
||||
|
||||
if ((error = TT_GSUB_String_Set_Length (in_str, N_ELEMENTS (arabic_str))))
|
||||
croak ("TT_GSUB_String_Set_Length", error);
|
||||
|
||||
for (i=0; i < N_ELEMENTS (arabic_str); i++)
|
||||
{
|
||||
in_str->string[i] = FT_Get_Char_Index (face, arabic_str[i]);
|
||||
in_str->properties[i] = arabic_props[i];
|
||||
in_str->components[i] = i;
|
||||
in_str->ligIDs[i] = i;
|
||||
}
|
||||
|
||||
if ((error = TT_GSUB_Apply_String (gsub, in_str, out_str)))
|
||||
croak ("TT_GSUB_Apply_String", error);
|
||||
|
||||
dump_string (in_str);
|
||||
dump_string (out_str);
|
||||
|
||||
if ((error = TT_GSUB_String_Done (in_str)))
|
||||
croak ("TT_GSUB_String_New", error);
|
||||
if ((error = TT_GSUB_String_Done (out_str)))
|
||||
croak ("TT_GSUB_String_New", error);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
FT_Error error;
|
||||
FT_Library library;
|
||||
FT_Face face;
|
||||
TTO_GSUB gsub;
|
||||
TTO_GPOS gpos;
|
||||
|
||||
if (argc != 2)
|
||||
{
|
||||
fprintf (stderr, "Usage: ottest MYFONT.TTF\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if ((error = FT_Init_FreeType (&library)))
|
||||
croak ("FT_Init_FreeType", error);
|
||||
|
||||
if ((error = FT_New_Face (library, argv[1], 0, &face)))
|
||||
croak ("FT_New_Face", error);
|
||||
|
||||
if (!(error = TT_Load_GSUB_Table (face, &gsub, NULL)))
|
||||
{
|
||||
TT_Dump_GSUB_Table (gsub, stdout);
|
||||
|
||||
if ((error = TT_Done_GSUB_Table (gsub)))
|
||||
croak ("FT_Done_GSUB_Table", error);
|
||||
}
|
||||
else
|
||||
fprintf (stderr, "TT_Load_GSUB_Table %d\n", error);
|
||||
|
||||
if (!(error = TT_Load_GPOS_Table (face, &gpos, NULL)))
|
||||
{
|
||||
TT_Dump_GPOS_Table (gpos, stdout);
|
||||
|
||||
if ((error = TT_Done_GPOS_Table (gpos)))
|
||||
croak ("FT_Done_GPOS_Table", error);
|
||||
}
|
||||
else
|
||||
fprintf (stderr, "TT_Load_GPOS_Table %d\n", error);
|
||||
|
||||
#if 0
|
||||
select_cmap (face);
|
||||
|
||||
add_features (gsub);
|
||||
try_string (library, face, gsub);
|
||||
#endif
|
||||
|
||||
|
||||
if ((error = FT_Done_Face (face)))
|
||||
croak ("FT_Done_Face", error);
|
||||
|
||||
if ((error = FT_Done_FreeType (library)))
|
||||
croak ("FT_Done_FreeType", error);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
438
src/pango-ot-info.c
Normal file
438
src/pango-ot-info.c
Normal file
@ -0,0 +1,438 @@
|
||||
/* Pango
|
||||
* pango-ot-info.c: Store tables for OpenType
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#include "pango-ot-private.h"
|
||||
#include <freetype/internal/tterrors.h>
|
||||
#include <freetype/internal/ftobjs.h>
|
||||
#include <freetype/ftmodule.h>
|
||||
|
||||
static void pango_ot_info_class_init (GObjectClass *object_class);
|
||||
static void pango_ot_info_finalize (GObject *object);
|
||||
|
||||
static GObjectClass *parent_class;
|
||||
|
||||
enum
|
||||
{
|
||||
INFO_LOADED_GDEF = 1 << 0,
|
||||
INFO_LOADED_GSUB = 1 << 1,
|
||||
INFO_LOADED_GPOS = 1 << 2
|
||||
};
|
||||
|
||||
GType
|
||||
pango_ot_info_get_type (void)
|
||||
{
|
||||
static GType object_type = 0;
|
||||
|
||||
if (!object_type)
|
||||
{
|
||||
static const GTypeInfo object_info =
|
||||
{
|
||||
sizeof (PangoOTInfoClass),
|
||||
(GBaseInitFunc) NULL,
|
||||
(GBaseFinalizeFunc) NULL,
|
||||
(GClassInitFunc)pango_ot_info_class_init,
|
||||
NULL, /* class_finalize */
|
||||
NULL, /* class_data */
|
||||
sizeof (PangoOTInfo),
|
||||
0, /* n_preallocs */
|
||||
NULL /* init */
|
||||
};
|
||||
|
||||
object_type = g_type_register_static (G_TYPE_OBJECT,
|
||||
"PangoOTInfo",
|
||||
&object_info, 0);
|
||||
}
|
||||
|
||||
return object_type;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_ot_info_class_init (GObjectClass *object_class)
|
||||
{
|
||||
parent_class = g_type_class_peek_parent (object_class);
|
||||
|
||||
object_class->finalize = pango_ot_info_finalize;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_ot_info_finalize (GObject *object)
|
||||
{
|
||||
PangoOTInfo *info = PANGO_OT_INFO (object);
|
||||
|
||||
if (info->gdef)
|
||||
{
|
||||
TT_Done_GDEF_Table (info->gdef);
|
||||
info->gdef = NULL;
|
||||
}
|
||||
if (info->gsub)
|
||||
{
|
||||
TT_Done_GSUB_Table (info->gsub);
|
||||
info->gsub = NULL;
|
||||
}
|
||||
if (info->gpos)
|
||||
{
|
||||
TT_Done_GPOS_Table (info->gpos);
|
||||
info->gpos = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
PangoOTInfo *
|
||||
pango_ot_info_new (FT_Face face)
|
||||
{
|
||||
PangoOTInfo *info;
|
||||
|
||||
info = g_object_new (PANGO_TYPE_OT_INFO, NULL);
|
||||
|
||||
info->face = face;
|
||||
|
||||
return info;
|
||||
}
|
||||
|
||||
/* There must be be a better way to do this
|
||||
*/
|
||||
static gboolean
|
||||
is_truetype (FT_Face face)
|
||||
{
|
||||
return strcmp (FT_MODULE_CLASS (face->driver)->module_name, "truetype") == 0;
|
||||
}
|
||||
|
||||
TTO_GDEF
|
||||
pango_ot_info_get_gdef (PangoOTInfo *info)
|
||||
{
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!(info->loaded & INFO_LOADED_GDEF))
|
||||
{
|
||||
FT_Error error;
|
||||
|
||||
info->loaded |= INFO_LOADED_GDEF;
|
||||
|
||||
if (is_truetype (info->face))
|
||||
{
|
||||
error = TT_Load_GDEF_Table (info->face, &info->gdef);
|
||||
|
||||
if (error && error != TT_Err_Table_Missing)
|
||||
g_warning ("Error loading GDEF table %d", error);
|
||||
}
|
||||
}
|
||||
|
||||
return info->gdef;
|
||||
}
|
||||
|
||||
TTO_GSUB
|
||||
pango_ot_info_get_gsub (PangoOTInfo *info)
|
||||
{
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!(info->loaded & INFO_LOADED_GSUB))
|
||||
{
|
||||
FT_Error error;
|
||||
TTO_GDEF gdef = pango_ot_info_get_gdef (info);
|
||||
|
||||
info->loaded |= INFO_LOADED_GSUB;
|
||||
|
||||
if (is_truetype (info->face))
|
||||
{
|
||||
error = TT_Load_GSUB_Table (info->face, &info->gsub, gdef);
|
||||
|
||||
if (error && error != TT_Err_Table_Missing)
|
||||
g_warning ("Error loading GSUB table %d", error);
|
||||
}
|
||||
}
|
||||
|
||||
return info->gsub;
|
||||
}
|
||||
|
||||
TTO_GPOS
|
||||
pango_ot_info_get_gpos (PangoOTInfo *info)
|
||||
{
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!(info->loaded & INFO_LOADED_GPOS))
|
||||
{
|
||||
FT_Error error;
|
||||
TTO_GDEF gdef = pango_ot_info_get_gdef (info);
|
||||
|
||||
info->loaded |= INFO_LOADED_GPOS;
|
||||
|
||||
if (is_truetype (info->face))
|
||||
{
|
||||
error = TT_Load_GPOS_Table (info->face, &info->gpos, gdef);
|
||||
|
||||
if (error && error != TT_Err_Table_Missing)
|
||||
g_warning ("Error loading GPOS table %d", error);
|
||||
}
|
||||
}
|
||||
|
||||
return info->gpos;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
get_tables (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
TTO_ScriptList **script_list,
|
||||
TTO_FeatureList **feature_list)
|
||||
{
|
||||
if (table_type == PANGO_OT_TABLE_GSUB)
|
||||
{
|
||||
TTO_GSUB gsub = pango_ot_info_get_gsub (info);
|
||||
|
||||
if (!gsub)
|
||||
return FALSE;
|
||||
else
|
||||
{
|
||||
if (script_list)
|
||||
*script_list = &gsub->ScriptList;
|
||||
if (feature_list)
|
||||
*feature_list = &gsub->FeatureList;
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
TTO_GPOS gpos = pango_ot_info_get_gpos (info);
|
||||
|
||||
if (!gpos)
|
||||
return FALSE;
|
||||
else
|
||||
{
|
||||
if (script_list)
|
||||
*script_list = &gpos->ScriptList;
|
||||
if (feature_list)
|
||||
*feature_list = &gpos->FeatureList;
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
gboolean
|
||||
pango_ot_info_find_script (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
PangoOTTag script_tag,
|
||||
guint *script_index)
|
||||
{
|
||||
TTO_ScriptList *script_list;
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), FALSE);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, NULL))
|
||||
return FALSE;
|
||||
|
||||
for (i=0; i < script_list->ScriptCount; i++)
|
||||
{
|
||||
if (script_list->ScriptRecord[i].ScriptTag == script_tag)
|
||||
{
|
||||
if (script_index)
|
||||
*script_index = i;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
gboolean
|
||||
pango_ot_info_find_language (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
guint script_index,
|
||||
PangoOTTag language_tag,
|
||||
guint *language_index,
|
||||
guint *required_feature_index)
|
||||
{
|
||||
TTO_ScriptList *script_list;
|
||||
TTO_Script *script;
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), FALSE);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, NULL))
|
||||
return FALSE;
|
||||
|
||||
g_return_val_if_fail (script_index < script_list->ScriptCount, FALSE);
|
||||
|
||||
script = &script_list->ScriptRecord[script_index].Script;
|
||||
|
||||
for (i = 0; i < script->LangSysCount; i++)
|
||||
{
|
||||
if (script->LangSysRecord[i].LangSysTag == language_tag)
|
||||
{
|
||||
if (language_index)
|
||||
*language_index = i;
|
||||
if (required_feature_index)
|
||||
*required_feature_index = script->LangSysRecord[i].LangSys.ReqFeatureIndex;
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
gboolean
|
||||
pango_ot_info_find_feature (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
PangoOTTag feature_tag,
|
||||
guint script_index,
|
||||
guint language_index,
|
||||
guint *feature_index)
|
||||
{
|
||||
TTO_ScriptList *script_list;
|
||||
TTO_FeatureList *feature_list;
|
||||
TTO_Script *script;
|
||||
TTO_LangSys *lang_sys;
|
||||
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), FALSE);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, &feature_list))
|
||||
return FALSE;
|
||||
|
||||
g_return_val_if_fail (script_index < script_list->ScriptCount, FALSE);
|
||||
|
||||
script = &script_list->ScriptRecord[script_index].Script;
|
||||
|
||||
if (language_index == 0xffff)
|
||||
lang_sys = &script->DefaultLangSys;
|
||||
else
|
||||
{
|
||||
g_return_val_if_fail (language_index < script->LangSysCount, FALSE);
|
||||
lang_sys = &script->LangSysRecord[language_index].LangSys;
|
||||
}
|
||||
|
||||
for (i = 0; i < lang_sys->FeatureCount; i++)
|
||||
{
|
||||
FT_UShort index = lang_sys->FeatureIndex[i];
|
||||
|
||||
if (feature_list->FeatureRecord[index].FeatureTag == feature_tag)
|
||||
{
|
||||
if (feature_index)
|
||||
*feature_index = index;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
PangoOTTag *
|
||||
pango_ot_info_list_scripts (PangoOTInfo *info,
|
||||
PangoOTTableType table_type)
|
||||
{
|
||||
PangoOTTag *result;
|
||||
TTO_ScriptList *script_list;
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, NULL))
|
||||
return NULL;
|
||||
|
||||
result = g_new (PangoOTTag, script_list->ScriptCount + 1);
|
||||
|
||||
for (i=0; i < script_list->ScriptCount; i++)
|
||||
result[i] = script_list->ScriptRecord[i].ScriptTag;
|
||||
|
||||
result[i] = 0;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
PangoOTTag *
|
||||
pango_ot_info_list_languages (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
guint script_index,
|
||||
PangoOTTag language_tag)
|
||||
{
|
||||
PangoOTTag *result;
|
||||
TTO_ScriptList *script_list;
|
||||
TTO_Script *script;
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, NULL))
|
||||
return NULL;
|
||||
|
||||
g_return_val_if_fail (script_index < script_list->ScriptCount, NULL);
|
||||
|
||||
script = &script_list->ScriptRecord[script_index].Script;
|
||||
|
||||
result = g_new (PangoOTTag, script->LangSysCount + 1);
|
||||
|
||||
for (i = 0; i < script->LangSysCount; i++)
|
||||
result[i] = script->LangSysRecord[i].LangSysTag;
|
||||
|
||||
result[i] = 0;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
PangoOTTag *
|
||||
pango_ot_info_list_features (PangoOTInfo *info,
|
||||
PangoOTTableType table_type,
|
||||
PangoOTTag tag,
|
||||
guint script_index,
|
||||
guint language_index)
|
||||
{
|
||||
PangoOTTag *result;
|
||||
|
||||
TTO_ScriptList *script_list;
|
||||
TTO_FeatureList *feature_list;
|
||||
TTO_Script *script;
|
||||
TTO_LangSys *lang_sys;
|
||||
|
||||
int i;
|
||||
|
||||
g_return_val_if_fail (PANGO_IS_OT_INFO (info), NULL);
|
||||
|
||||
if (!get_tables (info, table_type, &script_list, &feature_list))
|
||||
return NULL;
|
||||
|
||||
g_return_val_if_fail (script_index < script_list->ScriptCount, NULL);
|
||||
|
||||
script = &script_list->ScriptRecord[script_index].Script;
|
||||
|
||||
if (language_index == 0xffff)
|
||||
lang_sys = &script->DefaultLangSys;
|
||||
else
|
||||
{
|
||||
g_return_val_if_fail (language_index < script->LangSysCount, NULL);
|
||||
lang_sys = &script->LangSysRecord[language_index].LangSys;
|
||||
}
|
||||
|
||||
result = g_new (PangoOTTag, lang_sys->FeatureCount + 1);
|
||||
|
||||
for (i = 0; i < lang_sys->FeatureCount; i++)
|
||||
{
|
||||
FT_UShort index = lang_sys->FeatureIndex[i];
|
||||
|
||||
result[i] = feature_list->FeatureRecord[index].FeatureTag;
|
||||
}
|
||||
|
||||
result[i] = 0;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
98
src/pango-ot-private.h
Normal file
98
src/pango-ot-private.h
Normal file
@ -0,0 +1,98 @@
|
||||
/* Pango
|
||||
* pango-ot-private.h: Implementation details for Pango OpenType code
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef __PANGO_OT_PRIVATE_H__
|
||||
#define __PANGO_OT_PRIVATE_H__
|
||||
|
||||
#include <freetype/freetype.h>
|
||||
|
||||
#include <glib-object.h>
|
||||
|
||||
#include <pango/pango-ot.h>
|
||||
#include "ftxopen.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif /* __cplusplus */
|
||||
|
||||
#define PANGO_TYPE_OT_INFO (pango_ot_info_get_type ())
|
||||
#define PANGO_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_INFO, PangoOTInfo))
|
||||
#define PANGO_OT_INFO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_OT_INFO, PangoOTInfoClass))
|
||||
#define PANGO_IS_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_INFO))
|
||||
#define PANGO_IS_OT_INFO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_OT_INFO))
|
||||
#define PANGO_OT_INFO_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_OT_INFO, PangoOTInfoClass))
|
||||
|
||||
typedef struct _PangoOTInfoClass PangoOTInfoClass;
|
||||
|
||||
struct _PangoOTInfo
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
guint loaded;
|
||||
|
||||
FT_Face face;
|
||||
|
||||
TTO_GSUB gsub;
|
||||
TTO_GDEF gdef;
|
||||
TTO_GPOS gpos;
|
||||
};
|
||||
|
||||
struct _PangoOTInfoClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
};
|
||||
|
||||
#define PANGO_TYPE_OT_RULESET (pango_ot_ruleset_get_type ())
|
||||
#define PANGO_OT_RULESET(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_RULESET, PangoOTRuleset))
|
||||
#define PANGO_OT_RULESET_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_OT_RULESET, PangoOTRulesetClass))f
|
||||
#define PANGO_OT_IS_RULESET(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_RULESET))
|
||||
#define PANGO_OT_IS_RULESET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_OT_RULESET))
|
||||
#define PANGO_OT_RULESET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_OT_RULESET, PangoOTRulesetClass))
|
||||
|
||||
typedef struct _PangoOTRulesetClass PangoOTRulesetClass;
|
||||
|
||||
struct _PangoOTRuleset
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
GArray *rules;
|
||||
PangoOTInfo *info;
|
||||
};
|
||||
|
||||
struct _PangoOTRulesetClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
};
|
||||
|
||||
GType pango_ot_info_get_type (void);
|
||||
|
||||
TTO_GDEF pango_ot_info_get_gdef (PangoOTInfo *info);
|
||||
TTO_GSUB pango_ot_info_get_gsub (PangoOTInfo *info);
|
||||
TTO_GPOS pango_ot_info_get_gpos (PangoOTInfo *info);
|
||||
|
||||
GType pango_ot_ruleset_get_type (void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif /* __cplusplus */
|
||||
|
||||
|
||||
#endif /* __PANGO_OT_PRIVATE_H__ */
|
||||
232
src/pango-ot-ruleset.c
Normal file
232
src/pango-ot-ruleset.c
Normal file
@ -0,0 +1,232 @@
|
||||
/* Pango
|
||||
* pango-ot-ruleset.c: Shaping using OpenType features
|
||||
*
|
||||
* Copyright (C) 2000 Red Hat Software
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#include <freetype/internal/ftmemory.h>
|
||||
|
||||
#include <pango/pango-ot.h>
|
||||
#include "pango-ot-private.h"
|
||||
|
||||
typedef struct _PangoOTRule PangoOTRule;
|
||||
|
||||
struct _PangoOTRule
|
||||
{
|
||||
gulong property_bit;
|
||||
FT_UShort feature_index;
|
||||
guint table_type : 1;
|
||||
};
|
||||
|
||||
static void pango_ot_ruleset_class_init (GObjectClass *object_class);
|
||||
static void pango_ot_ruleset_init (PangoOTRuleset *ruleset);
|
||||
static void pango_ot_ruleset_finalize (GObject *object);
|
||||
|
||||
static GObjectClass *parent_class;
|
||||
|
||||
GType
|
||||
pango_ot_ruleset_get_type (void)
|
||||
{
|
||||
static GType object_type = 0;
|
||||
|
||||
if (!object_type)
|
||||
{
|
||||
static const GTypeInfo object_info =
|
||||
{
|
||||
sizeof (PangoOTRulesetClass),
|
||||
(GBaseInitFunc) NULL,
|
||||
(GBaseFinalizeFunc) NULL,
|
||||
(GClassInitFunc)pango_ot_ruleset_class_init,
|
||||
NULL, /* class_finalize */
|
||||
NULL, /* class_data */
|
||||
sizeof (PangoOTRuleset),
|
||||
0, /* n_preallocs */
|
||||
(GInstanceInitFunc)pango_ot_ruleset_init,
|
||||
};
|
||||
|
||||
object_type = g_type_register_static (G_TYPE_OBJECT,
|
||||
"PangoOTRuleset",
|
||||
&object_info, 0);
|
||||
}
|
||||
|
||||
return object_type;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_ot_ruleset_class_init (GObjectClass *object_class)
|
||||
{
|
||||
parent_class = g_type_class_peek_parent (object_class);
|
||||
|
||||
object_class->finalize = pango_ot_ruleset_finalize;
|
||||
}
|
||||
|
||||
static void
|
||||
pango_ot_ruleset_init (PangoOTRuleset *ruleset)
|
||||
{
|
||||
ruleset->rules = g_array_new (FALSE, FALSE, sizeof (PangoOTRule));
|
||||
}
|
||||
|
||||
static void
|
||||
pango_ot_ruleset_finalize (GObject *object)
|
||||
{
|
||||
PangoOTRuleset *ruleset = PANGO_OT_RULESET (object);
|
||||
|
||||
g_array_free (ruleset->rules, TRUE);
|
||||
g_object_unref (G_OBJECT (ruleset->info));
|
||||
}
|
||||
|
||||
PangoOTRuleset *
|
||||
pango_ot_ruleset_new (PangoOTInfo *info)
|
||||
{
|
||||
PangoOTRuleset *ruleset;
|
||||
|
||||
ruleset = g_object_new (PANGO_TYPE_OT_RULESET, NULL);
|
||||
|
||||
ruleset->info = g_object_ref (G_OBJECT (info));
|
||||
|
||||
return ruleset;
|
||||
}
|
||||
|
||||
void
|
||||
pango_ot_ruleset_add_feature (PangoOTRuleset *ruleset,
|
||||
PangoOTTableType table_type,
|
||||
guint feature_index,
|
||||
gulong property_bit)
|
||||
{
|
||||
PangoOTRule tmp_rule;
|
||||
|
||||
g_return_if_fail (PANGO_OT_IS_RULESET (ruleset));
|
||||
|
||||
tmp_rule.table_type = table_type;
|
||||
tmp_rule.feature_index = feature_index;
|
||||
tmp_rule.property_bit = property_bit;
|
||||
|
||||
g_array_append_val (ruleset->rules, tmp_rule);
|
||||
}
|
||||
|
||||
void
|
||||
pango_ot_ruleset_shape (PangoOTRuleset *ruleset,
|
||||
PangoGlyphString *glyphs,
|
||||
gulong *properties)
|
||||
{
|
||||
int i;
|
||||
int last_cluster;
|
||||
|
||||
TTO_GSUB gsub = NULL;
|
||||
TTO_GPOS gpos = NULL;
|
||||
|
||||
TTO_GSUB_String *in_string = NULL;
|
||||
TTO_GSUB_String *out_string = NULL;
|
||||
TTO_GSUB_String *result_string = NULL;
|
||||
TTO_GPOS_Data *pos_data;
|
||||
|
||||
gboolean need_gsub = FALSE;
|
||||
gboolean need_gpos = FALSE;
|
||||
|
||||
g_return_if_fail (PANGO_OT_IS_RULESET (ruleset));
|
||||
|
||||
for (i = 0; i < ruleset->rules->len; i++)
|
||||
{
|
||||
PangoOTRule *rule = &g_array_index (ruleset->rules, PangoOTRule, i);
|
||||
|
||||
if (rule->table_type == PANGO_OT_TABLE_GSUB)
|
||||
need_gsub = TRUE;
|
||||
else
|
||||
need_gpos = TRUE;
|
||||
}
|
||||
|
||||
if (need_gsub)
|
||||
{
|
||||
gsub = pango_ot_info_get_gsub (ruleset->info);
|
||||
|
||||
if (gsub)
|
||||
TT_GSUB_Clear_Features (gsub);
|
||||
}
|
||||
|
||||
if (need_gpos)
|
||||
{
|
||||
gpos = pango_ot_info_get_gpos (ruleset->info);
|
||||
|
||||
if (gpos)
|
||||
TT_GPOS_Clear_Features (gpos);
|
||||
}
|
||||
|
||||
for (i = 0; i < ruleset->rules->len; i++)
|
||||
{
|
||||
PangoOTRule *rule = &g_array_index (ruleset->rules, PangoOTRule, i);
|
||||
|
||||
if (rule->table_type == PANGO_OT_TABLE_GSUB)
|
||||
{
|
||||
if (gsub)
|
||||
TT_GSUB_Add_Feature (gsub, rule->feature_index, rule->property_bit);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (gpos)
|
||||
TT_GPOS_Add_Feature (gpos, rule->feature_index, rule->property_bit);
|
||||
}
|
||||
}
|
||||
|
||||
if (!gsub && !gpos)
|
||||
return;
|
||||
|
||||
g_assert (TT_GSUB_String_New (ruleset->info->face->memory,
|
||||
&in_string) == FT_Err_Ok);
|
||||
g_assert (TT_GSUB_String_Set_Length (in_string, glyphs->num_glyphs) == FT_Err_Ok);
|
||||
|
||||
for (i = 0; i < glyphs->num_glyphs; i++)
|
||||
{
|
||||
in_string->string[i] = glyphs->glyphs[i].glyph;
|
||||
in_string->properties[i] = properties[i];
|
||||
in_string->logClusters[i] = glyphs->log_clusters[i];
|
||||
}
|
||||
in_string->max_ligID = i;
|
||||
|
||||
if (gsub)
|
||||
{
|
||||
g_assert (TT_GSUB_String_New (ruleset->info->face->memory,
|
||||
&out_string) == FT_Err_Ok);
|
||||
result_string = out_string;
|
||||
|
||||
TT_GSUB_Apply_String (gsub, in_string, out_string);
|
||||
}
|
||||
else
|
||||
result_string = in_string;
|
||||
|
||||
pango_glyph_string_set_size (glyphs, result_string->length);
|
||||
|
||||
last_cluster = -1;
|
||||
for (i = 0; i < result_string->length; i++)
|
||||
{
|
||||
glyphs->glyphs[i].glyph = result_string->string[i];
|
||||
glyphs->glyphs[i].glyph = result_string->string[i];
|
||||
|
||||
glyphs->log_clusters[i] = result_string->logClusters[i];
|
||||
if (glyphs->log_clusters[i] != last_cluster)
|
||||
glyphs->glyphs[i].attr.is_cluster_start = 1;
|
||||
else
|
||||
glyphs->glyphs[i].attr.is_cluster_start = 0;
|
||||
|
||||
last_cluster = glyphs->log_clusters[i];
|
||||
}
|
||||
|
||||
if (in_string)
|
||||
TT_GSUB_String_Done (in_string);
|
||||
if (out_string)
|
||||
TT_GSUB_String_Done (out_string);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user