tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Silf.h (4331B)

      1 /*  GRAPHITE2 LICENSING
      2 
      3    Copyright 2010, SIL International
      4    All rights reserved.
      5 
      6    This library is free software; you can redistribute it and/or modify
      7    it under the terms of the GNU Lesser General Public License as published
      8    by the Free Software Foundation; either version 2.1 of License, or
      9    (at your option) any later version.
     10 
     11    This program is distributed in the hope that it will be useful,
     12    but WITHOUT ANY WARRANTY; without even the implied warranty of
     13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14    Lesser General Public License for more details.
     15 
     16    You should also have received a copy of the GNU Lesser General Public
     17    License along with this library in the file named "LICENSE".
     18    If not, write to the Free Software Foundation, 51 Franklin Street,
     19    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
     20    internet at http://www.fsf.org/licenses/lgpl.html.
     21 
     22 Alternatively, the contents of this file may be used under the terms of the
     23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
     24 License, as published by the Free Software Foundation, either version 2
     25 of the License or (at your option) any later version.
     26 */
     27 #pragma once
     28 
     29 #include "graphite2/Font.h"
     30 #include "inc/Main.h"
     31 #include "inc/Pass.h"
     32 
     33 namespace graphite2 {
     34 
     35 class Face;
     36 class Segment;
     37 class FeatureVal;
     38 class VMScratch;
     39 class Error;
     40 
     41 class Pseudo
     42 {
     43 public:
     44    uint32 uid;
     45    uint32 gid;
     46    CLASS_NEW_DELETE;
     47 };
     48 
     49 class Justinfo
     50 {
     51 public:
     52    Justinfo(uint8 stretch, uint8 shrink, uint8 step, uint8 weight) :
     53        m_astretch(stretch), m_ashrink(shrink), m_astep(step),
     54        m_aweight(weight) {};
     55    uint8 attrStretch() const { return m_astretch; }
     56    uint8 attrShrink() const { return m_ashrink; }
     57    uint8 attrStep() const { return m_astep; }
     58    uint8 attrWeight() const { return m_aweight; }
     59 
     60 private:
     61    uint8   m_astretch;
     62    uint8   m_ashrink;
     63    uint8   m_astep;
     64    uint8   m_aweight;
     65 };
     66 
     67 class Silf
     68 {
     69    // Prevent copying
     70    Silf(const Silf&);
     71    Silf& operator=(const Silf&);
     72 
     73 public:
     74    Silf() throw();
     75    ~Silf() throw();
     76 
     77    bool readGraphite(const byte * const pSilf, size_t lSilf, Face &face, uint32 version);
     78    bool runGraphite(Segment *seg, uint8 firstPass=0, uint8 lastPass=0, int dobidi = 0) const;
     79    uint16 findClassIndex(uint16 cid, uint16 gid) const;
     80    uint16 getClassGlyph(uint16 cid, unsigned int index) const;
     81    uint16 findPseudo(uint32 uid) const;
     82    uint8 numUser() const { return m_aUser; }
     83    uint8 aPseudo() const { return m_aPseudo; }
     84    uint8 aBreak() const { return m_aBreak; }
     85    uint8 aMirror() const {return m_aMirror; }
     86    uint8 aPassBits() const { return m_aPassBits; }
     87    uint8 aBidi() const { return m_aBidi; }
     88    uint8 aCollision() const { return m_aCollision; }
     89    uint8 substitutionPass() const { return m_sPass; }
     90    uint8 positionPass() const { return m_pPass; }
     91    uint8 justificationPass() const { return m_jPass; }
     92    uint8 bidiPass() const { return m_bPass; }
     93    uint8 numPasses() const { return m_numPasses; }
     94    uint8 maxCompPerLig() const { return m_iMaxComp; }
     95    uint16 numClasses() const { return m_nClass; }
     96    byte  flags() const { return m_flags; }
     97    byte  dir() const { return m_dir; }
     98    uint8 numJustLevels() const { return m_numJusts; }
     99    Justinfo *justAttrs() const { return m_justs; }
    100    uint16 endLineGlyphid() const { return m_gEndLine; }
    101    const gr_faceinfo *silfInfo() const { return &m_silfinfo; }
    102 
    103    CLASS_NEW_DELETE;
    104 
    105 private:
    106    size_t readClassMap(const byte *p, size_t data_len, uint32 version, Error &e);
    107    template<typename T> inline uint32 readClassOffsets(const byte *&p, size_t data_len, Error &e);
    108 
    109    Pass          * m_passes;
    110    Pseudo        * m_pseudos;
    111    uint32        * m_classOffsets;
    112    uint16        * m_classData;
    113    Justinfo      * m_justs;
    114    uint8           m_numPasses;
    115    uint8           m_numJusts;
    116    uint8           m_sPass, m_pPass, m_jPass, m_bPass,
    117                    m_flags, m_dir;
    118 
    119    uint8       m_aPseudo, m_aBreak, m_aUser, m_aBidi, m_aMirror, m_aPassBits,
    120                m_iMaxComp, m_aCollision;
    121    uint16      m_aLig, m_numPseudo, m_nClass, m_nLinear,
    122                m_gEndLine;
    123    gr_faceinfo m_silfinfo;
    124 
    125    void releaseBuffers() throw();
    126 };
    127 
    128 } // namespace graphite2