sl@0: /*
sl@0:  *
sl@0:  * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include "LETypes.h"
sl@0: #include "LEGlyphFilter.h"
sl@0: #include "OpenTypeTables.h"
sl@0: #include "GlyphSubstitutionTables.h"
sl@0: #include "SingleSubstitutionSubtables.h"
sl@0: #include "GlyphIterator.h"
sl@0: #include "LESwaps.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: le_uint32 SingleSubstitutionSubtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const
sl@0: {
sl@0:     switch(SWAPW(subtableFormat))
sl@0:     {
sl@0:     case 0:
sl@0:         return 0;
sl@0: 
sl@0:     case 1:
sl@0:     {
sl@0:         const SingleSubstitutionFormat1Subtable *subtable = (const SingleSubstitutionFormat1Subtable *) this;
sl@0: 
sl@0:         return subtable->process(glyphIterator, filter);
sl@0:     }
sl@0: 
sl@0:     case 2:
sl@0:     {
sl@0:         const SingleSubstitutionFormat2Subtable *subtable = (const SingleSubstitutionFormat2Subtable *) this;
sl@0: 
sl@0:         return subtable->process(glyphIterator, filter);
sl@0:     }
sl@0: 
sl@0:     default:
sl@0:         return 0;
sl@0:     }
sl@0: }
sl@0: 
sl@0: le_uint32 SingleSubstitutionFormat1Subtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const
sl@0: {
sl@0:     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
sl@0:     le_int32 coverageIndex = getGlyphCoverage(glyph);
sl@0: 
sl@0:     if (coverageIndex >= 0) {
sl@0:         TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID);
sl@0: 
sl@0:         if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
sl@0:             glyphIterator->setCurrGlyphID(substitute);
sl@0:         }
sl@0: 
sl@0:         return 1;
sl@0:     }
sl@0: 
sl@0:     return 0;
sl@0: }
sl@0: 
sl@0: le_uint32 SingleSubstitutionFormat2Subtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const
sl@0: {
sl@0:     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
sl@0:     le_int32 coverageIndex = getGlyphCoverage(glyph);
sl@0: 
sl@0:     if (coverageIndex >= 0) {
sl@0:         TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]);
sl@0: 
sl@0:         if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
sl@0:             glyphIterator->setCurrGlyphID(substitute);
sl@0:         }
sl@0: 
sl@0:         return 1;
sl@0:     }
sl@0: 
sl@0:     return 0;
sl@0: }
sl@0: 
sl@0: U_NAMESPACE_END