MyGUI_TSize.h

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/*
 * This source file is part of MyGUI. For the latest info, see http://mygui.info/
 * Distributed under the MIT License
 * (See accompanying file COPYING.MIT or copy at http://opensource.org/licenses/MIT)
 */
 
#ifndef MYGUI_TSIZE_H_
#define MYGUI_TSIZE_H_
 
#include "MyGUI_Prerequest.h"
#include "MyGUI_StringUtility.h"
 
namespace MyGUI::types
{
 
    template<typename T>
    struct TSize
    {
        T width{};
        T height{};
 
        TSize() = default;
 
        TSize(T const& _width, T const& _height) :
            width(_width),
            height(_height)
        {
        }
 
        TSize& operator-=(TSize const& _obj)
        {
            width -= _obj.width;
            height -= _obj.height;
            return *this;
        }
 
        TSize& operator+=(TSize const& _obj)
        {
            width += _obj.width;
            height += _obj.height;
            return *this;
        }
 
        TSize operator-(TSize const& _obj) const
        {
            return TSize(width - _obj.width, height - _obj.height);
        }
 
        TSize operator+(TSize const& _obj) const
        {
            return TSize(width + _obj.width, height + _obj.height);
        }
 
        template<typename U>
        TSize& operator=(TSize<U> const& _obj)
        {
            width = _obj.width;
            height = _obj.height;
            return *this;
        }
 
        bool operator==(TSize const& _obj) const
        {
            return ((width == _obj.width) && (height == _obj.height));
        }
 
        bool operator!=(TSize const& _obj) const
        {
            return !((width == _obj.width) && (height == _obj.height));
        }
 
        void clear()
        {
            width = height = 0;
        }
 
        void set(T const& _width, T const& _height)
        {
            width = _width;
            height = _height;
        }
 
        void swap(TSize& _value)
        {
            TSize tmp = _value;
            _value = *this;
            *this = tmp;
        }
 
        bool empty() const
        {
            return ((width == 0) && (height == 0));
        }
 
        std::string print() const
        {
            std::ostringstream stream;
            stream << *this;
            return stream.str();
        }
 
        static TSize<T> parse(std::string_view _value)
        {
            return utility::parseValue<TSize<T>>(_value);
        }
 
        friend std::ostream& operator<<(std::ostream& _stream, const TSize<T>& _value)
        {
            _stream << _value.width << " " << _value.height;
            return _stream;
        }
 
        friend std::istream& operator>>(std::istream& _stream, TSize<T>& _value)
        {
            _stream >> _value.width >> _value.height;
            if (_stream.fail())
                _value.clear();
            return _stream;
        }
    };
 
} // namespace MyGUI
 
#endif // MYGUI_TSIZE_H_