icuSources/layout/SinglePositioningSubtables.cpp

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2004 - 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 "GlyphPositionAdjustments.h"
  15 #include "LESwaps.h"
  16
  17 U_NAMESPACE_BEGIN
  18
  19 le_uint32 SinglePositioningSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  20 {
  21     switch(SWAPW(subtableFormat))
  22     {
  23     case 0:
  24         return 0;
  25
  26     case 1:
  27     {
  28         const SinglePositioningFormat1Subtable *subtable = (const SinglePositioningFormat1Subtable *) this;
  29
  30         return subtable->process(glyphIterator, fontInstance);
  31     }
  32
  33     case 2:
  34     {
  35         const SinglePositioningFormat2Subtable *subtable = (const SinglePositioningFormat2Subtable *) this;
  36
  37         return subtable->process(glyphIterator, fontInstance);
  38     }
  39
  40     default:
  41         return 0;
  42     }
  43 }
  44
  45 le_uint32 SinglePositioningFormat1Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  46 {
  47     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
  48     le_int32 coverageIndex = getGlyphCoverage(glyph);
  49
  50     if (coverageIndex >= 0) {
  51         GlyphPositionAdjustment adjustment;
  52
  53         glyphIterator->getCurrGlyphPositionAdjustment(adjustment);
  54
  55         valueRecord.adjustPosition(SWAPW(valueFormat), (const char *) this, adjustment, fontInstance);
  56
  57         glyphIterator->setCurrGlyphPositionAdjustment(&adjustment);
  58
  59         return 1;
  60     }
  61
  62     return 0;
  63 }
  64
  65 le_uint32 SinglePositioningFormat2Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  66 {
  67     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
  68     le_int16 coverageIndex = (le_int16) getGlyphCoverage(glyph);
  69
  70     if (coverageIndex >= 0) {
  71         GlyphPositionAdjustment adjustment;
  72
  73         glyphIterator->getCurrGlyphPositionAdjustment(adjustment);
  74
  75         valueRecordArray[0].adjustPosition(coverageIndex, SWAPW(valueFormat), (const char *) this, adjustment, fontInstance);
  76
  77         glyphIterator->setCurrGlyphPositionAdjustment(&adjustment);
  78
  79         return 1;
  80     }
  81
  82     return 0;
  83 }
  84
  85 U_NAMESPACE_END