icuSources/layout/ContextualGlyphSubstProc.h

   1 /*
   2  * @(#)ContextualGlyphSubstProc.h       1.6 00/03/15
   3  *
   4  * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved
   5  *
   6  */
   7
   8 #ifndef __CONTEXTUALGLYPHSUBSTITUTIONPROCESSOR_H
   9 #define __CONTEXTUALGLYPHSUBSTITUTIONPROCESSOR_H
  10
  11 /**
  12  * \file
  13  * \internal
  14  */
  15
  16 #include "LETypes.h"
  17 #include "MorphTables.h"
  18 #include "SubtableProcessor.h"
  19 #include "StateTableProcessor.h"
  20 #include "ContextualGlyphSubstitution.h"
  21
  22 U_NAMESPACE_BEGIN
  23
  24 class ContextualGlyphSubstitutionProcessor : public StateTableProcessor
  25 {
  26 public:
  27     virtual void beginStateTable();
  28
  29     virtual ByteOffset processStateEntry(LEGlyphID *glyphs, le_int32 *charIndices, le_int32 &currGlyph,
  30         le_int32 glyphCount, EntryTableIndex index);
  31
  32     virtual void endStateTable();
  33
  34     ContextualGlyphSubstitutionProcessor(const MorphSubtableHeader *morphSubtableHeader);
  35     virtual ~ContextualGlyphSubstitutionProcessor();
  36
  37     /**
  38      * ICU "poor man's RTTI", returns a UClassID for the actual class.
  39      *
  40      * @draft ICU 2.2
  41      */
  42     virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
  43
  44     /**
  45      * ICU "poor man's RTTI", returns a UClassID for this class.
  46      *
  47      * @draft ICU 2.2
  48      */
  49     static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
  50
  51 private:
  52     ContextualGlyphSubstitutionProcessor();
  53
  54 protected:
  55     ByteOffset substitutionTableOffset;
  56     const ContextualGlyphSubstitutionStateEntry *entryTable;
  57
  58     le_int32 markGlyph;
  59
  60     const ContextualGlyphSubstitutionHeader *contextualGlyphSubstitutionHeader;
  61
  62 private:
  63
  64     /**
  65      * The address of this static class variable serves as this class's ID
  66      * for ICU "poor man's RTTI".
  67      */
  68     static const char fgClassID;
  69 };
  70
  71 U_NAMESPACE_END
  72 #endif