D:/Uni/8.Semester/InfoVis/Demo/source/Graphics/TextureManager.h

#ifndef __TEXTUREMANAGER__H__
#define __TEXTUREMANAGER__H__

#include <string>
#include <map>

#include "../Util/Singleton.h"

class TextureManager : public Singleton<TextureManager>
{
        friend class Singleton<TextureManager>;

public:
        enum FilterMethod
        {
                FILTER_NONE = 0,
                FILTER_NEAREST,
                FILTER_LINEAR
        };
        TextureManager(void);
        ~TextureManager(void);

        unsigned int LoadTexture(const char* filename, bool mipMaps=true, bool compressed=true, bool isSkyBoxTexture=false);

        unsigned int LoadCubeMap(const char* filename[6], bool mipMaps);

        void ReleaseTexture(const unsigned int& idx);

        void DeleteAllTextures(void);

        unsigned int GetTextureSize(const unsigned int& idx);

        unsigned int GetTotalTextureSize(void);

        void ChangeFilterMethod(const FilterMethod& method);

        void ChangeMipMapMethod(const FilterMethod& method);

        const FilterMethod GetFilterMethod(void) const { return (FilterMethod)filterMethod; }

        const FilterMethod GetMipMapMethod(void) const { return (FilterMethod)mipMapMethod; }

private:
        struct TextureReference {
                unsigned int idx;
                unsigned int ref;
                unsigned int size;
                unsigned int numMipMaps;

                TextureReference(unsigned id_, unsigned sz, unsigned mm) : idx(id_), ref(1), size(sz), numMipMaps(mm) {}
                TextureReference() : idx(0), ref(0), size(0), numMipMaps(0) {}
                TextureReference(const TextureReference& tr) : idx(tr.idx), ref(tr.ref), size(tr.size), numMipMaps(tr.numMipMaps) {}
        };

        unsigned int CreateTexture(const unsigned int& Format, unsigned char** pixels, const unsigned int& width, const unsigned int& height, const unsigned int& numMipMaps, const bool& compressed, const bool& isSkyBoxTexture);

        unsigned int CreateCubeMap(unsigned char** pixels[6], const unsigned int& width, const unsigned int& height, const unsigned int& numMipMaps);

        std::map<std::string, TextureReference> textures;
        std::map<std::string, TextureReference>::iterator iter;

        unsigned int filterMethod;

        unsigned int mipMapMethod;
};

#endif

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