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