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Diffstat (limited to 'gfx/graphite2/src/inc/Face.h')
| -rw-r--r-- | gfx/graphite2/src/inc/Face.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/gfx/graphite2/src/inc/Face.h b/gfx/graphite2/src/inc/Face.h new file mode 100644 index 000000000..43ea43196 --- /dev/null +++ b/gfx/graphite2/src/inc/Face.h @@ -0,0 +1,225 @@ +/* GRAPHITE2 LICENSING + + Copyright 2010, SIL International + All rights reserved. + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should also have received a copy of the GNU Lesser General Public + License along with this library in the file named "LICENSE". + If not, write to the Free Software Foundation, 51 Franklin Street, + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the + internet at http://www.fsf.org/licenses/lgpl.html. + +Alternatively, the contents of this file may be used under the terms of the +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public +License, as published by the Free Software Foundation, either version 2 +of the License or (at your option) any later version. +*/ +#pragma once + +#include <cstdio> + +#include "graphite2/Font.h" + +#include "inc/Main.h" +#include "inc/FeatureMap.h" +#include "inc/TtfUtil.h" +#include "inc/Silf.h" +#include "inc/Error.h" + +namespace graphite2 { + +class Cmap; +class FileFace; +class GlyphCache; +class NameTable; +class json; +class Font; + + +using TtfUtil::Tag; + +// These are the actual tags, as distinct from the consecutive IDs in TtfUtil.h + +class Face +{ + // Prevent any kind of copying + Face(const Face&); + Face& operator=(const Face&); + +public: + class Table; + static float default_glyph_advance(const void* face_ptr, gr_uint16 glyphid); + + Face(const void* appFaceHandle/*non-NULL*/, const gr_face_ops & ops); + virtual ~Face(); + + virtual bool runGraphite(Segment *seg, const Silf *silf) const; + +public: + bool readGlyphs(uint32 faceOptions); + bool readGraphite(const Table & silf); + bool readFeatures(); + void takeFileFace(FileFace* pFileFace/*takes ownership*/); + + const SillMap & theSill() const; + const GlyphCache & glyphs() const; + Cmap & cmap() const; + NameTable * nameTable() const; + void setLogger(FILE *log_file); + json * logger() const throw(); + + const Silf * chooseSilf(uint32 script) const; + uint16 languageForLocale(const char * locale) const; + + // Features + uint16 numFeatures() const; + const FeatureRef * featureById(uint32 id) const; + const FeatureRef * feature(uint16 index) const; + + // Glyph related + int32 getGlyphMetric(uint16 gid, uint8 metric) const; + uint16 findPseudo(uint32 uid) const; + + // Errors + unsigned int error() const { return m_error; } + bool error(Error e) { m_error = e.error(); return false; } + unsigned int error_context() const { return m_error; } + void error_context(unsigned int errcntxt) { m_errcntxt = errcntxt; } + + CLASS_NEW_DELETE; +private: + SillMap m_Sill; + gr_face_ops m_ops; + const void * m_appFaceHandle; // non-NULL + FileFace * m_pFileFace; //owned + mutable GlyphCache * m_pGlyphFaceCache; // owned - never NULL + mutable Cmap * m_cmap; // cmap cache if available + mutable NameTable * m_pNames; + mutable json * m_logger; + unsigned int m_error; + unsigned int m_errcntxt; +protected: + Silf * m_silfs; // silf subtables. + uint16 m_numSilf; // num silf subtables in the silf table +private: + uint16 m_ascent, + m_descent; +#ifdef GRAPHITE2_TELEMETRY +public: + mutable telemetry tele; +#endif +}; + + + +inline +const SillMap & Face::theSill() const +{ + return m_Sill; +} + +inline +uint16 Face::numFeatures() const +{ + return m_Sill.theFeatureMap().numFeats(); +} + +inline +const FeatureRef * Face::featureById(uint32 id) const +{ + return m_Sill.theFeatureMap().findFeatureRef(id); +} + +inline +const FeatureRef *Face::feature(uint16 index) const +{ + return m_Sill.theFeatureMap().feature(index); +} + +inline +const GlyphCache & Face::glyphs() const +{ + return *m_pGlyphFaceCache; +} + +inline +Cmap & Face::cmap() const +{ + return *m_cmap; +}; + +inline +json * Face::logger() const throw() +{ + return m_logger; +} + + + +class Face::Table +{ + const Face * _f; + mutable const byte * _p; + uint32 _sz; + bool _compressed; + + Error decompress(); + + void releaseBuffers(); + +public: + Table() throw(); + Table(const Face & face, const Tag n, uint32 version=0xffffffff) throw(); + Table(const Table & rhs) throw(); + ~Table() throw(); + + operator const byte * () const throw(); + + Table & operator = (const Table & rhs) throw(); + size_t size() const throw(); +}; + +inline +Face::Table::Table() throw() +: _f(0), _p(0), _sz(0), _compressed(false) +{ +} + +inline +Face::Table::Table(const Table & rhs) throw() +: _f(rhs._f), _p(rhs._p), _sz(rhs._sz), _compressed(rhs._compressed) +{ + rhs._p = 0; +} + +inline +Face::Table::~Table() throw() +{ + releaseBuffers(); +} + +inline +Face::Table::operator const byte * () const throw() +{ + return _p; +} + +inline +size_t Face::Table::size() const throw() +{ + return _sz; +} + +} // namespace graphite2 + +struct gr_face : public graphite2::Face {}; |