icuSources/layout/SinglePositioningSubtables.cpp

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
   4  *
   5  */
   6
   7 #include "LETypes.h"
   8 #include "LEFontInstance.h"
   9 #include "OpenTypeTables.h"
  10 #include "GlyphPositioningTables.h"
  11 #include "SinglePositioningSubtables.h"
  12 #include "ValueRecords.h"
  13 #include "GlyphIterator.h"
  14 #include "LESwaps.h"
  15
  16 U_NAMESPACE_BEGIN
  17
  18 le_uint32 SinglePositioningSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  19 {
  20     switch(SWAPW(subtableFormat))
  21     {
  22     case 0:
  23         return 0;
  24
  25     case 1:
  26     {
  27         const SinglePositioningFormat1Subtable *subtable = (const SinglePositioningFormat1Subtable *) this;
  28
  29         return subtable->process(glyphIterator, fontInstance);
  30     }
  31
  32     case 2:
  33     {
  34         const SinglePositioningFormat2Subtable *subtable = (const SinglePositioningFormat2Subtable *) this;
  35
  36         return subtable->process(glyphIterator, fontInstance);
  37     }
  38
  39     default:
  40         return 0;
  41     }
  42 }
  43
  44 le_uint32 SinglePositioningFormat1Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  45 {
  46     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
  47     le_int32 coverageIndex = getGlyphCoverage(glyph);
  48
  49     if (coverageIndex >= 0) {
  50         valueRecord.adjustPosition(SWAPW(valueFormat), (const char *) this, *glyphIterator, fontInstance);
  51
  52         return 1;
  53     }
  54
  55     return 0;
  56 }
  57
  58 le_uint32 SinglePositioningFormat2Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  59 {
  60     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
  61     le_int16 coverageIndex = (le_int16) getGlyphCoverage(glyph);
  62
  63     if (coverageIndex >= 0) {
  64         valueRecordArray[0].adjustPosition(coverageIndex, SWAPW(valueFormat), (const char *) this, *glyphIterator, fontInstance);
  65
  66         return 1;
  67     }
  68
  69     return 0;
  70 }
  71
  72 U_NAMESPACE_END