virtual_image_proxy.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef STRUCTURAL_PROXY_VIRTUAL_IMAGE_PROXY_H_
#define STRUCTURAL_PROXY_VIRTUAL_IMAGE_PROXY_H_

#include "image.h"

namespace structural
{
namespace proxy
{
class VirtualImageProxy
{
    public:
    explicit VirtualImageProxy(const std::string& imageFile);
    virtual ~VirtualImageProxy();

    virtual Image *operator->();
    virtual Image &operator*();

    private:
    Image *LoadImage();
    Image* image_;
    std::string image_file_;
};
}
}

#endif