projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f | 1 | /* |
| b75a7d8f | 2 | * |
| 374ca955 | 3 | * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved |
| b75a7d8f A |
4 | * |
| 5 | */ | |
| 6 | ||
| 7 | #include "LETypes.h" | |
| 8 | #include "LEGlyphFilter.h" | |
| 9 | #include "OpenTypeTables.h" | |
| 10 | #include "GlyphSubstitutionTables.h" | |
| 11 | #include "AlternateSubstSubtables.h" | |
| 12 | #include "GlyphIterator.h" | |
| 13 | #include "LESwaps.h" | |
| 14 | ||
| 15 | U_NAMESPACE_BEGIN | |
| 16 | ||
| 17 | le_uint32 AlternateSubstitutionSubtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const | |
| 18 | { | |
| 19 | // NOTE: For now, we'll just pick the first alternative... | |
| 20 | LEGlyphID glyph = glyphIterator->getCurrGlyphID(); | |
| 21 | le_int32 coverageIndex = getGlyphCoverage(glyph); | |
| 22 | ||
| 23 | if (coverageIndex >= 0) { | |
| 24 | le_uint16 altSetCount = SWAPW(alternateSetCount); | |
| 25 | ||
| 26 | if (coverageIndex < altSetCount) { | |
| 27 | Offset alternateSetTableOffset = SWAPW(alternateSetTableOffsetArray[coverageIndex]); | |
| 28 | const AlternateSetTable *alternateSetTable = | |
| 29 | (const AlternateSetTable *) ((char *) this + alternateSetTableOffset); | |
| 30 | TTGlyphID alternate = SWAPW(alternateSetTable->alternateArray[0]); | |
| 31 | ||
| 32 | if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, alternate))) { | |
| 33 | glyphIterator->setCurrGlyphID(SWAPW(alternateSetTable->alternateArray[0])); | |
| 34 | } | |
| 35 | ||
| 36 | return 1; | |
| 37 | } | |
| 38 | ||
| 39 | // XXXX If we get here, the table's mal-formed... | |
| 40 | } | |
| 41 | ||
| 42 | return 0; | |
| 43 | } | |
| 44 | ||
| 45 | U_NAMESPACE_END |