| /* |
| * %W% %E% |
| * |
| * (C) Copyright IBM Corp. 2008-2010 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "OpenTypeTables.h" |
| #include "GlyphSubstitutionTables.h" |
| #include "LookupProcessor.h" |
| #include "ExtensionSubtables.h" |
| #include "GlyphIterator.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| // read a 32-bit value that might only be 16-bit-aligned in memory |
| #define READ_LONG(code) (le_uint32)((SWAPW(*(le_uint16*)&code) << 16) + SWAPW(*(((le_uint16*)&code) + 1))) |
| |
| // FIXME: should look at the format too... maybe have a sub-class for it? |
| le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType, |
| GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const |
| { |
| if (LE_FAILURE(success)) { |
| return 0; |
| } |
| |
| le_uint16 elt = SWAPW(extensionLookupType); |
| |
| if (elt != lookupType) { |
| le_uint32 extOffset = READ_LONG(extensionOffset); |
| LookupSubtable *subtable = (LookupSubtable *) ((char *) this + extOffset); |
| |
| return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance, success); |
| } |
| |
| return 0; |
| } |
| |
| U_NAMESPACE_END |
