1 /*

     2  *

     3  * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved

     4  *

     5  */

     6 

     7 #include "LETypes.h"

     8 #include "MorphTables.h"

     9 #include "SubtableProcessor.h"

    10 #include "NonContextualGlyphSubst.h"

    11 #include "NonContextualGlyphSubstProc.h"

    12 #include "SegmentArrayProcessor.h"

    13 #include "LEGlyphStorage.h"

    14 #include "LESwaps.h"

    15 

    16 U_NAMESPACE_BEGIN

    17 

    18 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor)

    19 

    20 SegmentArrayProcessor::SegmentArrayProcessor()

    21 {

    22 }

    23 

    24 SegmentArrayProcessor::SegmentArrayProcessor(const MorphSubtableHeader *morphSubtableHeader)

    25   : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader)

    26 {

    27     const NonContextualGlyphSubstitutionHeader *header = (const NonContextualGlyphSubstitutionHeader *) morphSubtableHeader;

    28 

    29     segmentArrayLookupTable = (const SegmentArrayLookupTable *) &header->table;

    30 }

    31 

    32 SegmentArrayProcessor::~SegmentArrayProcessor()

    33 {

    34 }

    35 

    36 void SegmentArrayProcessor::process(LEGlyphStorage &glyphStorage)

    37 {

    38     const LookupSegment *segments = segmentArrayLookupTable->segments;

    39     le_int32 glyphCount = glyphStorage.getGlyphCount();

    40     le_int32 glyph;

    41 

    42     for (glyph = 0; glyph < glyphCount; glyph += 1) {

    43         LEGlyphID thisGlyph = glyphStorage[glyph];

    44         const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segments, thisGlyph);

    45 

    46         if (lookupSegment != NULL)  {

    47             TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);

    48             le_int16  offset = SWAPW(lookupSegment->value);

    49 

    50             if (offset != 0) {

    51                 TTGlyphID  *glyphArray = (TTGlyphID *) ((char *) subtableHeader + offset);

    52                 TTGlyphID   newGlyph   = SWAPW(glyphArray[LE_GET_GLYPH(thisGlyph) - firstGlyph]);

    53                 

    54                 glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);

    55             } 

    56         }

    57     }

    58 }

    59  

    60 U_NAMESPACE_END