diff options
Diffstat (limited to 'Build/source/libs/icu/icu-xetex/layout/GXLayoutEngine.cpp')
-rw-r--r-- | Build/source/libs/icu/icu-xetex/layout/GXLayoutEngine.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-xetex/layout/GXLayoutEngine.cpp b/Build/source/libs/icu/icu-xetex/layout/GXLayoutEngine.cpp new file mode 100644 index 00000000000..4d596bb0f3d --- /dev/null +++ b/Build/source/libs/icu/icu-xetex/layout/GXLayoutEngine.cpp @@ -0,0 +1,69 @@ + +/* + * + * (C) Copyright IBM Corp. 1998-2007 - All Rights Reserved + * + */ + +#include "LETypes.h" +#include "LayoutEngine.h" +#include "GXLayoutEngine.h" +#include "LEGlyphStorage.h" + +#include "MorphTables.h" + +U_NAMESPACE_BEGIN + +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine) + +GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const MorphTableHeader *morphTable) + : LayoutEngine(fontInstance, scriptCode, languageCode, 0), fMorphTable(morphTable) +{ + // nothing else to do? +} + +GXLayoutEngine::~GXLayoutEngine() +{ + reset(); +} + +// apply 'mort' table +le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success) +{ + if (LE_FAILURE(success)) { + return 0; + } + + if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { + success = LE_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success); + + if (LE_FAILURE(success)) { + return 0; + } + + fMorphTable->process(glyphStorage); + + return count; +} + +// apply positional tables +void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, + LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success) +{ + if (LE_FAILURE(success)) { + return; + } + + if (chars == NULL || offset < 0 || count < 0) { + success = LE_ILLEGAL_ARGUMENT_ERROR; + return; + } + + // FIXME: no positional processing yet... +} + +U_NAMESPACE_END |