DtCharacterEncodingMap.h

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/******************************************************************************
** Copyright (c) 2022 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once
#include <vrvGraphics/vrvGraphics.h>
#include <unordered_map>

namespace makVrv
{
   class DtFreeTypeFace;

   class DT_DLL_VRVGRAPHICS DtCharacterEncodingMap
   {
   public:
      // CTOR
      DtCharacterEncodingMap(DtFreeTypeFace* face);
      ~DtCharacterEncodingMap();

      unsigned int encoding() const;

      bool setEncoding(unsigned int  encoding);

      unsigned int indexOfGlyph(const unsigned int characterCode) const;

      unsigned int indexInFont(unsigned int characterCode) const;

      void setGlyphIndex(const unsigned int characterCode, const size_t glyphIndex);

   protected:

      typedef std::unordered_map<unsigned int, unsigned int> CharacterMap;

      DtFreeTypeFace* myFace;
      CharacterMap myGlyphMap;

      unsigned int myEncoding;
      static const unsigned int TheCacheSize = 128;
      unsigned int myIndexCache[TheCacheSize];
   };
}