1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/textandloc/fontservices/textshaperplugin/IcuSource/layout/AlternateSubstSubtables.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,45 @@
     1.4 +/*
     1.5 + *
     1.6 + * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
     1.7 + *
     1.8 + */
     1.9 +
    1.10 +#include "LETypes.h"
    1.11 +#include "LEGlyphFilter.h"
    1.12 +#include "OpenTypeTables.h"
    1.13 +#include "GlyphSubstitutionTables.h"
    1.14 +#include "AlternateSubstSubtables.h"
    1.15 +#include "GlyphIterator.h"
    1.16 +#include "LESwaps.h"
    1.17 +
    1.18 +U_NAMESPACE_BEGIN
    1.19 +
    1.20 +le_uint32 AlternateSubstitutionSubtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const
    1.21 +{
    1.22 +    // NOTE: For now, we'll just pick the first alternative...
    1.23 +    LEGlyphID glyph = glyphIterator->getCurrGlyphID();
    1.24 +    le_int32 coverageIndex = getGlyphCoverage(glyph);
    1.25 +
    1.26 +    if (coverageIndex >= 0) {
    1.27 +        le_uint16 altSetCount = SWAPW(alternateSetCount);
    1.28 +
    1.29 +        if (coverageIndex < altSetCount) {
    1.30 +            Offset alternateSetTableOffset = SWAPW(alternateSetTableOffsetArray[coverageIndex]);
    1.31 +            const AlternateSetTable *alternateSetTable =
    1.32 +                (const AlternateSetTable *) ((char *) this + alternateSetTableOffset);
    1.33 +            TTGlyphID alternate = SWAPW(alternateSetTable->alternateArray[0]);
    1.34 +
    1.35 +            if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, alternate))) {
    1.36 +                glyphIterator->setCurrGlyphID(SWAPW(alternateSetTable->alternateArray[0]));
    1.37 +            }
    1.38 +            
    1.39 +            return 1;
    1.40 +        }
    1.41 +
    1.42 +        // XXXX If we get here, the table's mal-formed...
    1.43 +    }
    1.44 +
    1.45 +    return 0;
    1.46 +}
    1.47 +
    1.48 +U_NAMESPACE_END