icuSources/layout/ExtensionSubtables.cpp

   1 /*
   2  * %W% %E%
   3  *
   4  * (C) Copyright IBM Corp. 2002 - All Rights Reserved
   5  *
   6  */
   7
   8 #include "LETypes.h"
   9 #include "OpenTypeTables.h"
  10 #include "GlyphSubstitutionTables.h"
  11 #include "LookupProcessor.h"
  12 #include "ExtensionSubtables.h"
  13 #include "GlyphIterator.h"
  14 #include "LESwaps.h"
  15
  16 U_NAMESPACE_BEGIN
  17
  18
  19 // FIXME: should look at the format too... maybe have a sub-class for it?
  20 le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType,
  21                                       GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
  22 {
  23     le_uint16 elt = SWAPW(extensionLookupType);
  24
  25     if (elt != lookupType) {
  26         le_uint32 extOffset = SWAPL(extensionOffset);
  27         LookupSubtable *subtable = (LookupSubtable *) ((char *) this + extOffset);
  28
  29         return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance);
  30     }
  31
  32     return 0;
  33 }
  34
  35 U_NAMESPACE_END