icuSources/layout/LigatureSubstProc.h

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
   4  *
   5  */
   6
   7 #ifndef __LIGATURESUBSTITUTIONPROCESSOR_H
   8 #define __LIGATURESUBSTITUTIONPROCESSOR_H
   9
  10 /**
  11  * \file
  12  * \internal
  13  */
  14
  15 #include "LETypes.h"
  16 #include "MorphTables.h"
  17 #include "SubtableProcessor.h"
  18 #include "StateTableProcessor.h"
  19 #include "LigatureSubstitution.h"
  20
  21 U_NAMESPACE_BEGIN
  22
  23 class LEGlyphStorage;
  24
  25 #define nComponents 16
  26
  27 class LigatureSubstitutionProcessor : public StateTableProcessor
  28 {
  29 public:
  30     virtual void beginStateTable();
  31
  32     virtual ByteOffset processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index);
  33
  34     virtual void endStateTable();
  35
  36     LigatureSubstitutionProcessor(const MorphSubtableHeader *morphSubtableHeader);
  37     virtual ~LigatureSubstitutionProcessor();
  38
  39     /**
  40      * ICU "poor man's RTTI", returns a UClassID for the actual class.
  41      *
  42      * @stable ICU 2.8
  43      */
  44     virtual UClassID getDynamicClassID() const;
  45
  46     /**
  47      * ICU "poor man's RTTI", returns a UClassID for this class.
  48      *
  49      * @stable ICU 2.8
  50      */
  51     static UClassID getStaticClassID();
  52
  53 private:
  54     LigatureSubstitutionProcessor();
  55
  56 protected:
  57     ByteOffset ligatureActionTableOffset;
  58     ByteOffset componentTableOffset;
  59     ByteOffset ligatureTableOffset;
  60
  61     const LigatureSubstitutionStateEntry *entryTable;
  62
  63     le_int32 componentStack[nComponents];
  64     le_int16 m;
  65
  66     const LigatureSubstitutionHeader *ligatureSubstitutionHeader;
  67
  68 };
  69
  70 U_NAMESPACE_END
  71 #endif