michael@0: /*  GRAPHITE2 LICENSING
michael@0: 
michael@0:     Copyright 2010, SIL International
michael@0:     All rights reserved.
michael@0: 
michael@0:     This library is free software; you can redistribute it and/or modify
michael@0:     it under the terms of the GNU Lesser General Public License as published
michael@0:     by the Free Software Foundation; either version 2.1 of License, or
michael@0:     (at your option) any later version.
michael@0: 
michael@0:     This program is distributed in the hope that it will be useful,
michael@0:     but WITHOUT ANY WARRANTY; without even the implied warranty of
michael@0:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
michael@0:     Lesser General Public License for more details.
michael@0: 
michael@0:     You should also have received a copy of the GNU Lesser General Public
michael@0:     License along with this library in the file named "LICENSE".
michael@0:     If not, write to the Free Software Foundation, 51 Franklin Street, 
michael@0:     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the 
michael@0:     internet at http://www.fsf.org/licenses/lgpl.html.
michael@0: 
michael@0: Alternatively, the contents of this file may be used under the terms of the
michael@0: Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
michael@0: License, as published by the Free Software Foundation, either version 2
michael@0: of the License or (at your option) any later version.
michael@0: */
michael@0: #pragma once
michael@0: 
michael@0: #include "graphite2/Font.h"
michael@0: #include "inc/Main.h"
michael@0: #include "inc/Pass.h"
michael@0: 
michael@0: namespace graphite2 {
michael@0: 
michael@0: class Face;
michael@0: class Segment;
michael@0: class FeatureVal;
michael@0: class VMScratch;
michael@0: class Error;
michael@0: 
michael@0: class Pseudo
michael@0: {
michael@0: public:
michael@0:     uint32 uid;
michael@0:     uint32 gid;
michael@0:     CLASS_NEW_DELETE;
michael@0: };
michael@0: 
michael@0: class Justinfo
michael@0: {
michael@0: public:
michael@0:     Justinfo(uint8 stretch, uint8 shrink, uint8 step, uint8 weight) :
michael@0:         m_astretch(stretch), m_ashrink(shrink), m_astep(step),
michael@0:         m_aweight(weight) {};
michael@0:     uint8 attrStretch() const { return m_astretch; }
michael@0:     uint8 attrShrink() const { return m_ashrink; }
michael@0:     uint8 attrStep() const { return m_astep; }
michael@0:     uint8 attrWeight() const { return m_aweight; }
michael@0: 
michael@0: private:
michael@0:     uint8   m_astretch;
michael@0:     uint8   m_ashrink;
michael@0:     uint8   m_astep;
michael@0:     uint8   m_aweight;
michael@0: };
michael@0: 
michael@0: class Silf
michael@0: {
michael@0:     // Prevent copying
michael@0:     Silf(const Silf&);
michael@0:     Silf& operator=(const Silf&);
michael@0: 
michael@0: public:
michael@0:     Silf() throw();
michael@0:     ~Silf() throw();
michael@0:     
michael@0:     bool readGraphite(const byte * const pSilf, size_t lSilf, Face &face, uint32 version);
michael@0:     bool runGraphite(Segment *seg, uint8 firstPass=0, uint8 lastPass=0, int dobidi = 0) const;
michael@0:     uint16 findClassIndex(uint16 cid, uint16 gid) const;
michael@0:     uint16 getClassGlyph(uint16 cid, unsigned int index) const;
michael@0:     uint16 findPseudo(uint32 uid) const;
michael@0:     uint8 numUser() const { return m_aUser; }
michael@0:     uint8 aPseudo() const { return m_aPseudo; }
michael@0:     uint8 aBreak() const { return m_aBreak; }
michael@0:     uint8 aMirror() const {return m_aMirror; }
michael@0:     uint8 aPassBits() const { return m_aPassBits; }
michael@0:     uint8 aBidi() const { return m_aBidi; }
michael@0:     uint8 substitutionPass() const { return m_sPass; }
michael@0:     uint8 positionPass() const { return m_pPass; }
michael@0:     uint8 justificationPass() const { return m_jPass; }
michael@0:     uint8 bidiPass() const { return m_bPass; }
michael@0:     uint8 numPasses() const { return m_numPasses; }
michael@0:     uint8 maxCompPerLig() const { return m_iMaxComp; }
michael@0:     uint16 numClasses() const { return m_nClass; }
michael@0:     byte  flags() const { return m_flags; }
michael@0:     uint8 numJustLevels() const { return m_numJusts; }
michael@0:     Justinfo *justAttrs() const { return m_justs; }
michael@0:     uint16 endLineGlyphid() const { return m_gEndLine; }
michael@0:     const gr_faceinfo *silfInfo() const { return &m_silfinfo; }
michael@0: 
michael@0:     CLASS_NEW_DELETE;
michael@0: 
michael@0: private:
michael@0:     size_t readClassMap(const byte *p, size_t data_len, uint32 version, Error &e);
michael@0:     template<typename T> inline uint32 readClassOffsets(const byte *&p, size_t data_len, Error &e);
michael@0: 
michael@0:     Pass          * m_passes;
michael@0:     Pseudo        * m_pseudos;
michael@0:     uint32        * m_classOffsets;
michael@0:     uint16        * m_classData;
michael@0:     Justinfo      * m_justs;
michael@0:     uint8           m_numPasses;
michael@0:     uint8           m_numJusts;
michael@0:     uint8           m_sPass, m_pPass, m_jPass, m_bPass,
michael@0:                     m_flags;
michael@0: 
michael@0:     uint8   m_aPseudo, m_aBreak, m_aUser, m_aBidi, m_aMirror, m_aPassBits,
michael@0:             m_iMaxComp;
michael@0:     uint16  m_aLig,
michael@0:             m_numPseudo,
michael@0:             m_nClass,
michael@0:             m_nLinear,
michael@0:             m_gEndLine;
michael@0:     gr_faceinfo m_silfinfo;
michael@0:     
michael@0:     void releaseBuffers() throw();
michael@0: };
michael@0: 
michael@0: } // namespace graphite2