icuSources/layout/TrimmedArrayProcessor.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 "TrimmedArrayProcessor.h"
  13 #include "LEGlyphStorage.h"
  14 #include "LESwaps.h"
  15
  16 U_NAMESPACE_BEGIN
  17
  18 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TrimmedArrayProcessor)
  19
  20 TrimmedArrayProcessor::TrimmedArrayProcessor()
  21 {
  22 }
  23
  24 TrimmedArrayProcessor::TrimmedArrayProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
  25   : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader, success), firstGlyph(0), lastGlyph(0)
  26 {
  27   LEReferenceTo<NonContextualGlyphSubstitutionHeader> header(morphSubtableHeader, success);
  28
  29   if(LE_FAILURE(success)) return;
  30
  31   trimmedArrayLookupTable = LEReferenceTo<TrimmedArrayLookupTable>(morphSubtableHeader, success, (const TrimmedArrayLookupTable*)&header->table);
  32
  33   if(LE_FAILURE(success)) return;
  34
  35   firstGlyph = SWAPW(trimmedArrayLookupTable->firstGlyph);
  36   lastGlyph = firstGlyph + SWAPW(trimmedArrayLookupTable->glyphCount);
  37 }
  38
  39 TrimmedArrayProcessor::~TrimmedArrayProcessor()
  40 {
  41 }
  42
  43 void TrimmedArrayProcessor::process(LEGlyphStorage &glyphStorage, LEErrorCode &success)
  44 {
  45   if(LE_FAILURE(success)) return;
  46     le_int32 glyphCount = glyphStorage.getGlyphCount();
  47     le_int32 glyph;
  48
  49     for (glyph = 0; glyph < glyphCount; glyph += 1) {
  50         LEGlyphID thisGlyph = glyphStorage[glyph];
  51         TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(thisGlyph);
  52
  53         if ((ttGlyph > firstGlyph) && (ttGlyph < lastGlyph)) {
  54             TTGlyphID newGlyph = SWAPW(trimmedArrayLookupTable->valueArray[ttGlyph - firstGlyph]);
  55
  56             glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
  57         }
  58     }
  59 }
  60
  61 U_NAMESPACE_END