Array2D.h

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/*******************************************************************************
 
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#pragma once
 
#include "Zivid/Detail/CoreExport.h"
 
#include <memory>
#include <string>
#include <type_traits>
 
namespace Zivid
{
#ifndef NO_DOC
    namespace Detail
    {
        ZIVID_CORE_EXPORT std::string array2DToString(std::size_t width, std::size_t height);
    } // namespace Detail
#endif
 
    template<typename DataFormat>
    class Array2D
    {
    public:
        using ValueType = DataFormat;
 
        using ConstIterator = DataFormat const *;
 
        Array2D()
            : m_width{ 0 }
            , m_height{ 0 }
        {}
 
        size_t width() const
        {
            return m_width;
        }
 
        size_t height() const
        {
            return m_height;
        }
 
        size_t size() const
        {
            return width() * height();
        }
 
        bool isEmpty() const
        {
            return size() == 0;
        }
 
        const DataFormat *data() const
        {
            return m_data.get();
        }
 
        const DataFormat &operator()(size_t idx) const
        {
            return *(data() + idx);
        }
 
        const DataFormat &operator()(size_t i, size_t j) const
        {
            return operator()(width() * i + j);
        }
 
        ConstIterator begin() const
        {
            return data();
        }
 
        ConstIterator end() const
        {
            return data() + size();
        }
 
        ConstIterator cbegin() const
        {
            return data();
        }
 
        ConstIterator cend() const
        {
            return data() + size();
        }
 
        std::string toString() const
        {
            return Detail::array2DToString(width(), height());
        }
 
    private:
        friend class Array2DFactory;
 
        Array2D(std::size_t width, std::size_t height, std::unique_ptr<DataFormat[]> data)
            : m_width{ width }
            , m_height{ height }
            , m_data{ // Due to poor support for shared_ptr array types in C++11 the data
                      // ownership is transferred from the std::unique_ptr to a std::shared_ptr
                      // of non-array type with a specified array deleter.
                      data.release(),
                      std::default_delete<DataFormat[]>()
            }
        {}
 
        std::size_t m_width;
        std::size_t m_height;
        std::shared_ptr<DataFormat> m_data;
    };
 
    template<typename T>
    std::ostream &operator<<(std::ostream &stream, const Array2D<T> &array)
    {
        return stream << array.toString();
    }
} // namespace Zivid