DtOsgStateComponent.h

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/****************************************************************************** 
** Copyright (c) 2012 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <osg/Referenced>
#include <osg/ref_ptr>
#include <string>

namespace osg
{
   class StateSet;
}

namespace makVrv
{
   //TODO: put this is a separate file [h/cxx] file?

   class DtDe;


   class DT_DLL_VRVOSG DtOsgStateComponentContext : public osg::Referenced
   {
     public:
        DtOsgStateComponentContext(DtDe& de);

        //todo: doc
        void setShaderFolderPath(const std::string& path);

        //todo: doc
        const std::string& getShaderFolderPath() const;

     protected:
         
        virtual ~DtOsgStateComponentContext();

        std::string myShaderFolderPath;

        DtDe& myDe;
   };

   class DtOsgShaderFilesCache;

   class DT_DLL_VRVOSG DtOsgStateComponent : public osg::Referenced
   {
   public:
      DtOsgStateComponent(DtDe& de, const DtOsgStateComponentContext* context =0L);
      
      const DtOsgStateComponentContext* getContext() const;

      virtual bool install(osg::StateSet* stateset) =0;

      virtual bool uninstall(osg::StateSet* stateset) =0;

   protected:

      virtual ~DtOsgStateComponent();

      std::string loadShaderSource(const std::string& strFileName) const;

   private:
       osg::ref_ptr<const DtOsgStateComponentContext> myContext;

       DtDe& myDe;

       DtOsgShaderFilesCache& myShaderFilesCache;
   };
}