MyGUI_TPoint.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_TPONT_H_
#define MYGUI_TPONT_H_
 
#include "MyGUI_Prerequest.h"
#include "MyGUI_StringUtility.h"
 
namespace MyGUI::types
{
 
    template<typename T>
    struct TPoint
    {
        T left{};
        T top{};
 
        TPoint() = default;
 
        TPoint(T const& _left, T const& _top) :
            left(_left),
            top(_top)
        {
        }
 
        TPoint& operator-=(TPoint const& _obj)
        {
            left -= _obj.left;
            top -= _obj.top;
            return *this;
        }
 
        TPoint& operator+=(TPoint const& _obj)
        {
            left += _obj.left;
            top += _obj.top;
            return *this;
        }
 
        TPoint operator-(TPoint const& _obj) const
        {
            return TPoint(left - _obj.left, top - _obj.top);
        }
 
        TPoint operator+(TPoint const& _obj) const
        {
            return TPoint(left + _obj.left, top + _obj.top);
        }
 
        template<typename U>
        TPoint& operator=(TPoint<U> const& _obj)
        {
            left = _obj.left;
            top = _obj.top;
            return *this;
        }
 
        bool operator==(TPoint const& _obj) const
        {
            return ((left == _obj.left) && (top == _obj.top));
        }
 
        bool operator!=(TPoint const& _obj) const
        {
            return !((left == _obj.left) && (top == _obj.top));
        }
 
        void clear()
        {
            left = top = 0;
        }
 
        void set(T const& _left, T const& _top)
        {
            left = _left;
            top = _top;
        }
 
        void swap(TPoint& _value)
        {
            TPoint tmp = _value;
            _value = *this;
            *this = tmp;
        }
 
        bool empty() const
        {
            return ((left == 0) && (top == 0));
        }
 
        std::string print() const
        {
            std::ostringstream stream;
            stream << *this;
            return stream.str();
        }
 
        static TPoint<T> parse(std::string_view _value)
        {
            return utility::parseValue<TPoint<T>>(_value);
        }
 
        friend std::ostream& operator<<(std::ostream& _stream, const TPoint<T>& _value)
        {
            _stream << _value.left << " " << _value.top;
            return _stream;
        }
 
        friend std::istream& operator>>(std::istream& _stream, TPoint<T>& _value)
        {
            _stream >> _value.left >> _value.top;
            if (_stream.fail())
                _value.clear();
            return _stream;
        }
    };
 
} // namespace MyGUI
 
#endif // MYGUI_TPONT_H_