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IndicLayoutEngine.h

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00001 
00002 /*
00003  * @(#)IndicLayoutEngine.h      1.4 00/03/15
00004  *
00005  * (C) Copyright IBM Corp. 1998, 1999, 2000, 2001, 2002 - All Rights Reserved
00006  *
00007  */
00008 
00009 #ifndef __INDICLAYOUTENGINE_H
00010 #define __INDICLAYOUTENGINE_H
00011 
00012 #include "LETypes.h"
00013 #include "LEFontInstance.h"
00014 #include "LEGlyphFilter.h"
00015 #include "LayoutEngine.h"
00016 #include "OpenTypeLayoutEngine.h"
00017 
00018 #include "GlyphSubstitutionTables.h"
00019 #include "GlyphDefinitionTables.h"
00020 #include "GlyphPositioningTables.h"
00021 
00022 #include <string.h>
00023 
00024 U_NAMESPACE_BEGIN
00025 
00037 class IndicOpenTypeLayoutEngine : public OpenTypeLayoutEngine
00038 {
00039 public:
00057     IndicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode,
00058                             const GlyphSubstitutionTableHeader *gsubTable);
00059 
00073     IndicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode);
00074 
00080    virtual ~IndicOpenTypeLayoutEngine();
00081 
00087     virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
00088 
00094     static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
00095 
00096 protected:
00097 
00121     virtual le_int32 characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
00122             LEUnicode *&outChars, le_int32 *&charIndices, const LETag **&featureTags, LEErrorCode &success);
00123 
00153     virtual le_int32 glyphProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
00154             const LETag **featureTags, LEGlyphID *&glyphs, le_int32 *&charIndices, LEErrorCode &success);
00155 
00156 private:
00157 
00162     static const char fgClassID;
00163 };
00164 
00165 U_NAMESPACE_END
00166 #endif
00167 

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