203 lines
4.4 KiB
C++
203 lines
4.4 KiB
C++
// SPDX-License-Identifier: MIT
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// Copyright 2010, SIL International, All rights reserved.
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#pragma once
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#include <cstdio>
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#include "graphite2/Font.h"
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#include "inc/Main.h"
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#include "inc/FeatureMap.h"
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#include "inc/TtfUtil.h"
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#include "inc/Silf.h"
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#include "inc/Error.h"
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namespace graphite2 {
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class Cmap;
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class FileFace;
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class GlyphCache;
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class NameTable;
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class json;
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class Font;
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using TtfUtil::Tag;
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// These are the actual tags, as distinct from the consecutive IDs in TtfUtil.h
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class Face
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{
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// Prevent any kind of copying
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Face(const Face&);
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Face& operator=(const Face&);
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public:
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class Table;
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static float default_glyph_advance(const void* face_ptr, uint16_t glyphid);
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Face(const void* appFaceHandle/*non-NULL*/, const gr_face_ops & ops);
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virtual ~Face();
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virtual bool runGraphite(Segment &seg, const Silf *silf) const;
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public:
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bool readGlyphs(uint32_t faceOptions);
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bool readGraphite(const Table & silf);
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bool readFeatures();
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void takeFileFace(FileFace* pFileFace/*takes ownership*/);
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const SillMap & theSill() const;
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const GlyphCache & glyphs() const;
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Cmap & cmap() const;
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NameTable * nameTable() const;
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void setLogger(FILE *log_file);
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json * logger() const throw();
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const Silf * chooseSilf(uint32_t script) const;
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uint16_t languageForLocale(const char * locale) const;
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// Features
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uint16_t numFeatures() const;
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const FeatureRef * featureById(uint32_t id) const;
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const FeatureRef * feature(uint16_t index) const;
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// Glyph related
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int32_t getGlyphMetric(uint16_t gid, uint8_t metric) const;
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uint16_t findPseudo(uint32_t uid) const;
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// Errors
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unsigned int error() const { return m_error; }
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bool error(Error e) { m_error = e.error(); return false; }
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unsigned int error_context() const { return m_error; }
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void error_context(unsigned int errcntxt) { m_errcntxt = errcntxt; }
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CLASS_NEW_DELETE;
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private:
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SillMap m_Sill;
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gr_face_ops m_ops;
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const void * m_appFaceHandle; // non-NULL
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FileFace * m_pFileFace; //owned
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mutable GlyphCache * m_pGlyphFaceCache; // owned - never NULL
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mutable Cmap * m_cmap; // cmap cache if available
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mutable NameTable * m_pNames;
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mutable json * m_logger;
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unsigned int m_error;
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unsigned int m_errcntxt;
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protected:
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Silf * m_silfs; // silf subtables.
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uint16_t m_numSilf; // num silf subtables in the silf table
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private:
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uint16_t m_ascent,
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m_descent;
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#ifdef GRAPHITE2_TELEMETRY
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public:
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mutable telemetry tele;
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#endif
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};
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inline
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const SillMap & Face::theSill() const
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{
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return m_Sill;
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}
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inline
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uint16_t Face::numFeatures() const
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{
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return m_Sill.theFeatureMap().numFeats();
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}
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inline
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const FeatureRef * Face::featureById(uint32_t id) const
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{
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return m_Sill.theFeatureMap().findFeatureRef(id);
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}
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inline
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const FeatureRef *Face::feature(uint16_t index) const
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{
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return m_Sill.theFeatureMap().feature(index);
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}
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inline
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const GlyphCache & Face::glyphs() const
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{
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return *m_pGlyphFaceCache;
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}
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inline
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Cmap & Face::cmap() const
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{
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return *m_cmap;
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};
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inline
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json * Face::logger() const throw()
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{
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return m_logger;
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}
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class Face::Table
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{
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const Face * _f;
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mutable const byte * _p;
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size_t _sz;
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bool _compressed;
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Error decompress();
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void release();
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public:
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Table() throw();
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Table(const Face & face, const Tag n, uint32_t version=0xffffffff) throw();
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~Table() throw();
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Table(const Table && rhs) throw();
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operator const byte * () const throw();
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size_t size() const throw();
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Table & operator = (const Table && rhs) throw();
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};
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inline
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Face::Table::Table() throw()
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: _f(0), _p(0), _sz(0), _compressed(false)
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{
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}
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inline
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Face::Table::Table(const Table && rhs) throw()
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: _f(rhs._f), _p(rhs._p), _sz(rhs._sz), _compressed(rhs._compressed)
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{
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rhs._p = 0;
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}
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inline
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Face::Table::~Table() throw()
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{
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release();
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}
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inline
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Face::Table::operator const byte * () const throw()
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{
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return _p;
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}
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inline
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size_t Face::Table::size() const throw()
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{
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return _sz;
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}
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} // namespace graphite2
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struct gr_face : public graphite2::Face {};
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