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