1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/graphite2/src/inc/Face.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,220 @@
1.4 +/* GRAPHITE2 LICENSING
1.5 +
1.6 + Copyright 2010, SIL International
1.7 + All rights reserved.
1.8 +
1.9 + This library is free software; you can redistribute it and/or modify
1.10 + it under the terms of the GNU Lesser General Public License as published
1.11 + by the Free Software Foundation; either version 2.1 of License, or
1.12 + (at your option) any later version.
1.13 +
1.14 + This program is distributed in the hope that it will be useful,
1.15 + but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.17 + Lesser General Public License for more details.
1.18 +
1.19 + You should also have received a copy of the GNU Lesser General Public
1.20 + License along with this library in the file named "LICENSE".
1.21 + If not, write to the Free Software Foundation, 51 Franklin Street,
1.22 + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
1.23 + internet at http://www.fsf.org/licenses/lgpl.html.
1.24 +
1.25 +Alternatively, the contents of this file may be used under the terms of the
1.26 +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
1.27 +License, as published by the Free Software Foundation, either version 2
1.28 +of the License or (at your option) any later version.
1.29 +*/
1.30 +#pragma once
1.31 +
1.32 +#include <stdio.h>
1.33 +
1.34 +#include "graphite2/Font.h"
1.35 +
1.36 +#include "inc/Main.h"
1.37 +#include "inc/FeatureMap.h"
1.38 +#include "inc/TtfUtil.h"
1.39 +#include "inc/Silf.h"
1.40 +#include "inc/Error.h"
1.41 +
1.42 +namespace graphite2 {
1.43 +
1.44 +class Cmap;
1.45 +class FileFace;
1.46 +class GlyphCache;
1.47 +class NameTable;
1.48 +class json;
1.49 +
1.50 +
1.51 +using TtfUtil::Tag;
1.52 +
1.53 +// These are the actual tags, as distinct from the consecutive IDs in TtfUtil.h
1.54 +
1.55 +class Face
1.56 +{
1.57 + // Prevent any kind of copying
1.58 + Face(const Face&);
1.59 + Face& operator=(const Face&);
1.60 +
1.61 +public:
1.62 + class Table;
1.63 + static float default_glyph_advance(const void* face_ptr, gr_uint16 glyphid);
1.64 +
1.65 + Face(const void* appFaceHandle/*non-NULL*/, const gr_face_ops & ops);
1.66 + virtual ~Face();
1.67 +
1.68 + virtual bool runGraphite(Segment *seg, const Silf *silf) const;
1.69 +
1.70 +public:
1.71 + bool readGlyphs(uint32 faceOptions);
1.72 + bool readGraphite(const Table & silf);
1.73 + bool readFeatures();
1.74 + void takeFileFace(FileFace* pFileFace/*takes ownership*/);
1.75 +
1.76 + const SillMap & theSill() const;
1.77 + const GlyphCache & glyphs() const;
1.78 + Cmap & cmap() const;
1.79 + NameTable * nameTable() const;
1.80 + void setLogger(FILE *log_file);
1.81 + json * logger() const throw();
1.82 +
1.83 + const Silf * chooseSilf(uint32 script) const;
1.84 + uint16 languageForLocale(const char * locale) const;
1.85 +
1.86 + // Features
1.87 + uint16 numFeatures() const;
1.88 + const FeatureRef * featureById(uint32 id) const;
1.89 + const FeatureRef * feature(uint16 index) const;
1.90 +
1.91 + // Glyph related
1.92 + uint16 getGlyphMetric(uint16 gid, uint8 metric) const;
1.93 + uint16 findPseudo(uint32 uid) const;
1.94 +
1.95 + // Errors
1.96 + unsigned int error() const { return m_error; }
1.97 + bool error(Error e) { m_error = e.error(); return false; }
1.98 + unsigned int error_context() const { return m_error; }
1.99 + void error_context(unsigned int errcntxt) { m_errcntxt = errcntxt; }
1.100 +
1.101 + CLASS_NEW_DELETE;
1.102 +private:
1.103 + SillMap m_Sill;
1.104 + gr_face_ops m_ops;
1.105 + const void * m_appFaceHandle; // non-NULL
1.106 + FileFace * m_pFileFace; //owned
1.107 + mutable GlyphCache * m_pGlyphFaceCache; // owned - never NULL
1.108 + mutable Cmap * m_cmap; // cmap cache if available
1.109 + mutable NameTable * m_pNames;
1.110 + mutable json * m_logger;
1.111 + unsigned int m_error;
1.112 + unsigned int m_errcntxt;
1.113 +protected:
1.114 + Silf * m_silfs; // silf subtables.
1.115 + uint16 m_numSilf; // num silf subtables in the silf table
1.116 +private:
1.117 + uint16 m_ascent,
1.118 + m_descent;
1.119 +#ifdef GRAPHITE2_TELEMETRY
1.120 +public:
1.121 + mutable telemetry tele;
1.122 +#endif
1.123 +};
1.124 +
1.125 +
1.126 +
1.127 +inline
1.128 +const SillMap & Face::theSill() const
1.129 +{
1.130 + return m_Sill;
1.131 +}
1.132 +
1.133 +inline
1.134 +uint16 Face::numFeatures() const
1.135 +{
1.136 + return m_Sill.theFeatureMap().numFeats();
1.137 +}
1.138 +
1.139 +inline
1.140 +const FeatureRef * Face::featureById(uint32 id) const
1.141 +{
1.142 + return m_Sill.theFeatureMap().findFeatureRef(id);
1.143 +}
1.144 +
1.145 +inline
1.146 +const FeatureRef *Face::feature(uint16 index) const
1.147 +{
1.148 + return m_Sill.theFeatureMap().feature(index);
1.149 +}
1.150 +
1.151 +inline
1.152 +const GlyphCache & Face::glyphs() const
1.153 +{
1.154 + return *m_pGlyphFaceCache;
1.155 +}
1.156 +
1.157 +inline
1.158 +Cmap & Face::cmap() const
1.159 +{
1.160 + return *m_cmap;
1.161 +};
1.162 +
1.163 +inline
1.164 +json * Face::logger() const throw()
1.165 +{
1.166 + return m_logger;
1.167 +}
1.168 +
1.169 +
1.170 +
1.171 +class Face::Table
1.172 +{
1.173 + const Face * _f;
1.174 + mutable const byte * _p;
1.175 + uint32 _sz;
1.176 +
1.177 +public:
1.178 + Table() throw();
1.179 + Table(const Face & face, const Tag n) throw();
1.180 + Table(const Table & rhs) throw();
1.181 + ~Table() throw();
1.182 +
1.183 + operator const byte * () const throw();
1.184 +
1.185 + Table & operator = (const Table & rhs) throw();
1.186 + size_t size() const throw();
1.187 +};
1.188 +
1.189 +inline
1.190 +Face::Table::Table() throw()
1.191 +: _f(0), _p(0), _sz(0)
1.192 +{
1.193 +}
1.194 +
1.195 +inline
1.196 +Face::Table::Table(const Table & rhs) throw()
1.197 +: _f(rhs._f), _p(rhs._p), _sz(rhs._sz)
1.198 +{
1.199 + rhs._p = 0;
1.200 +}
1.201 +
1.202 +inline
1.203 +Face::Table::~Table() throw()
1.204 +{
1.205 + if (_p && _f->m_ops.release_table)
1.206 + (*_f->m_ops.release_table)(_f->m_appFaceHandle, _p);
1.207 +}
1.208 +
1.209 +inline
1.210 +Face::Table::operator const byte * () const throw()
1.211 +{
1.212 + return _p;
1.213 +}
1.214 +
1.215 +inline
1.216 +size_t Face::Table::size() const throw()
1.217 +{
1.218 + return _sz;
1.219 +}
1.220 +
1.221 +} // namespace graphite2
1.222 +
1.223 +struct gr_face : public graphite2::Face {};
