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 "SingleSubstitutionSubtables.h" | |
| 12 | #include "GlyphIterator.h" | |
| 13 | #include "LESwaps.h" | |
| 14 | ||
| 15 | U_NAMESPACE_BEGIN | |
| 16 | ||
| 17 | le_uint32 SingleSubstitutionSubtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const | |
| 18 | { | |
| 19 | switch(SWAPW(subtableFormat)) | |
| 20 | { | |
| 21 | case 0: | |
| 22 | return 0; | |
| 23 | ||
| 24 | case 1: | |
| 25 | { | |
| 26 | const SingleSubstitutionFormat1Subtable *subtable = (const SingleSubstitutionFormat1Subtable *) this; | |
| 27 | ||
| 28 | return subtable->process(glyphIterator, filter); | |
| 29 | } | |
| 30 | ||
| 31 | case 2: | |
| 32 | { | |
| 33 | const SingleSubstitutionFormat2Subtable *subtable = (const SingleSubstitutionFormat2Subtable *) this; | |
| 34 | ||
| 35 | return subtable->process(glyphIterator, filter); | |
| 36 | } | |
| 37 | ||
| 38 | default: | |
| 39 | return 0; | |
| 40 | } | |
| 41 | } | |
| 42 | ||
| 43 | le_uint32 SingleSubstitutionFormat1Subtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const | |
| 44 | { | |
| 45 | LEGlyphID glyph = glyphIterator->getCurrGlyphID(); | |
| 46 | le_int32 coverageIndex = getGlyphCoverage(glyph); | |
| 47 | ||
| 48 | if (coverageIndex >= 0) { | |
| 49 | TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID); | |
| 50 | ||
| 51 | if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) { | |
| 52 | glyphIterator->setCurrGlyphID(substitute); | |
| 53 | } | |
| 54 | ||
| 55 | return 1; | |
| 56 | } | |
| 57 | ||
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | le_uint32 SingleSubstitutionFormat2Subtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const | |
| 62 | { | |
| 63 | LEGlyphID glyph = glyphIterator->getCurrGlyphID(); | |
| 64 | le_int32 coverageIndex = getGlyphCoverage(glyph); | |
| 65 | ||
| 66 | if (coverageIndex >= 0) { | |
| 67 | TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]); | |
| 68 | ||
| 69 | if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) { | |
| 70 | glyphIterator->setCurrGlyphID(substitute); | |
| 71 | } | |
| 72 | ||
| 73 | return 1; | |
| 74 | } | |
| 75 | ||
| 76 | return 0; | |
| 77 | } | |
| 78 | ||
| 79 | U_NAMESPACE_END |