source/layout/SegmentSingleProcessor.cpp

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2013 - 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 "SegmentSingleProcessor.h"
  13 #include "LEGlyphStorage.h"
  14 #include "LESwaps.h"
  15
  16 U_NAMESPACE_BEGIN
  17
  18 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentSingleProcessor)
  19
  20 SegmentSingleProcessor::SegmentSingleProcessor()
  21 {
  22 }
  23
  24 SegmentSingleProcessor::SegmentSingleProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
  25   : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader, success)
  26 {
  27   LEReferenceTo<NonContextualGlyphSubstitutionHeader> header(morphSubtableHeader, success);
  28   segmentSingleLookupTable = LEReferenceTo<SegmentSingleLookupTable>(morphSubtableHeader, success, (const SegmentSingleLookupTable*)&header->table);
  29 }
  30
  31 SegmentSingleProcessor::~SegmentSingleProcessor()
  32 {
  33 }
  34
  35 void SegmentSingleProcessor::process(LEGlyphStorage &glyphStorage, LEErrorCode &success)
  36 {
  37     const LookupSegment *segments = segmentSingleLookupTable->segments;
  38     le_int32 glyphCount = glyphStorage.getGlyphCount();
  39     le_int32 glyph;
  40
  41     for (glyph = 0; glyph < glyphCount && LE_SUCCESS(success); glyph += 1) {
  42         LEGlyphID thisGlyph = glyphStorage[glyph];
  43         const LookupSegment *lookupSegment = segmentSingleLookupTable->lookupSegment(segmentSingleLookupTable, segments, thisGlyph, success);
  44
  45         if (lookupSegment != NULL && LE_SUCCESS(success)) {
  46             TTGlyphID   newGlyph  = (TTGlyphID) LE_GET_GLYPH(thisGlyph) + SWAPW(lookupSegment->value);
  47
  48             glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
  49         }
  50     }
  51 }
  52
  53 U_NAMESPACE_END