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#ifndef QT3DRENDER_RENDER_TEXTUREIMAGE_H
#define QT3DRENDER_RENDER_TEXTUREIMAGE_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <Qt3DRender/private/backendnode_p.h>
#include <Qt3DRender/private/handle_types_p.h>
#include <Qt3DRender/qabstracttexture.h>
#include <Qt3DRender/qtextureimage.h>
#include <Qt3DRender/qabstracttextureimage.h>
#include <qglobal.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {

namespace Render {

class TextureManager;
class TextureImageManager;
class TextureDataManager;

typedef quint64 TextureImageDNA;

class TextureImage : public BackendNode
{
public:
    TextureImage();
    void cleanup();
    void sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e) Q_DECL_OVERRIDE;

    int m_layer;
    int m_mipLevel;
    QAbstractTexture::CubeMapFace m_face;
    bool m_dirty;
    inline TextureImageDNA dna() const { return m_dna; }

    inline int layer() const { return m_layer; }
    inline int mipLevel() const { return m_mipLevel; }
    inline QAbstractTexture::CubeMapFace face() const { return m_face; }

    void setTextureManager(TextureManager *manager);
    void setTextureImageManager(TextureImageManager *manager);
    void setTextureDataManager(TextureDataManager *manager);
    void setStatus(QTextureImage::Status status);
    void unsetDirty();

    inline bool isDirty() const { return m_dirty; }
    void setTextureDataHandle(HTextureData handle);

    inline HTextureData textureDataHandle() const { return m_textureDataHandle; }
    inline QTextureImageDataGeneratorPtr dataGenerator() const { return m_generator; }

    void updateDNA(quint32 dataHash);
private:
    void initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change) Q_DECL_FINAL;


    QTextureImageDataGeneratorPtr m_generator;
    HTextureData m_textureDataHandle;
    TextureManager *m_textureManager;
    TextureImageManager *m_textureImageManager;
    TextureDataManager *m_textureDataManager;
    QVector<Qt3DCore::QNodeId> m_referencedTextures;
    HTexture m_textureProvider;
    Qt3DCore::QNodeId m_textureProviderId;
    TextureImageDNA m_dna;
};

class TextureImageFunctor : public Qt3DCore::QBackendNodeMapper
{
public:
    explicit TextureImageFunctor(AbstractRenderer *renderer,
                                 TextureManager *textureManager,
                                 TextureImageManager *textureImageManager,
                                 TextureDataManager *textureDataManager);

    Qt3DCore::QBackendNode *create(const Qt3DCore::QNodeCreatedChangeBasePtr &change) const Q_DECL_FINAL;
    Qt3DCore::QBackendNode *get(Qt3DCore::QNodeId id) const Q_DECL_FINAL;
    void destroy(Qt3DCore::QNodeId id) const Q_DECL_FINAL;

private:
    TextureManager *m_textureManager;
    TextureImageManager *m_textureImageManager;
    TextureDataManager *m_textureDataManager;
    AbstractRenderer *m_renderer;
};


} // namespace Render

} // namespace Qt3DRender

QT_END_NAMESPACE

#endif // QT3DRENDER_RENDER_TEXTUREIMAGE_H