MyGUI_TCoord.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_TCOORD_H__
#define __MyGUI_TCOORD_H__

#include "MyGUI_Prerequest.h"
#include "MyGUI_TPoint.h"
#include "MyGUI_TSize.h"

namespace MyGUI
{
    namespace types
    {

        template<typename T>
        struct TCoord
        {
            T left;
            T top;
            T width;
            T height;

            TCoord() :
                left(0),
                top(0),
                width(0),
                height(0)
            {
            }

            TCoord(T const& _left, T const& _top, T const& _width, T const& _height) :
                left(_left),
                top(_top),
                width(_width),
                height(_height)
            {
            }

            TCoord(TCoord const& _obj) :
                left(_obj.left),
                top(_obj.top),
                width(_obj.width),
                height(_obj.height)
            {
            }

            TCoord(TPoint<T> const& _point, TSize<T> const& _size) :
                left(_point.left),
                top(_point.top),
                width(_size.width),
                height(_size.height)
            {
            }

            TCoord& operator -= (TCoord const& _obj)
            {
                left -= _obj.left;
                top -= _obj.top;
                width -= _obj.width;
                height -= _obj.height;
                return *this;
            }

            TCoord& operator += (TCoord const& _obj)
            {
                left += _obj.left;
                top += _obj.top;
                width += _obj.width;
                height += _obj.height;
                return *this;
            }

            TCoord operator - (TCoord const& _obj) const
            {
                return TCoord(left - _obj.left, top - _obj.top, width - _obj.width, height - _obj.height);
            }

            TCoord operator - (TPoint<T> const& _obj) const
            {
                return TCoord(left - _obj.left, top - _obj.top, width, height);
            }

            TCoord operator - (TSize<T> const& _obj) const
            {
                return TCoord(left, top, width - _obj.width, height - _obj.height);
            }

            TCoord operator + (TCoord const& _obj) const
            {
                return TCoord(left + _obj.left, top + _obj.top, width + _obj.width, height + _obj.height);
            }

            TCoord operator + (TPoint<T> const& _obj) const
            {
                return TCoord(left + _obj.left, top + _obj.top, width, height);
            }

            TCoord operator + (TSize<T> const& _obj) const
            {
                return TCoord(left, top, width + _obj.width, height + _obj.height);
            }

            TCoord& operator = (TCoord const& _obj)
            {
                left = _obj.left;
                top = _obj.top;
                width = _obj.width;
                height = _obj.height;
                return *this;
            }

            template< typename U >
            TCoord& operator = (TCoord<U> const& _obj)
            {
                left = _obj.left;
                top = _obj.top;
                width = _obj.width;
                height = _obj.height;
                return *this;
            }

            TCoord& operator = (TPoint<T> const& _obj)
            {
                left = _obj.left;
                top = _obj.top;
                return *this;
            }

            TCoord& operator = (TSize<T> const& _obj)
            {
                width = _obj.width;
                height = _obj.height;
                return *this;
            }

            bool operator == (TCoord const& _obj) const
            {
                return ((left == _obj.left) && (top == _obj.top) && (width == _obj.width) && (height == _obj.height));
            }

            bool operator != (TCoord const& _obj) const
            {
                return !((left == _obj.left) && (top == _obj.top) && (width == _obj.width) && (height == _obj.height));
            }

            T right() const
            {
                return left + width;
            }

            T bottom() const
            {
                return top + height;
            }

            void clear()
            {
                left = top = width = height = 0;
            }

            void set(T const& _left, T const& _top, T const& _width, T const& _height)
            {
                left = _left;
                top = _top;
                width = _width;
                height = _height;
            }

            void swap(TCoord& _value)
            {
                TCoord tmp = _value;
                _value = *this;
                *this = tmp;
            }

            bool empty() const
            {
                return ((left == 0) && (top == 0) && (width == 0) && (height == 0));
            }

            TPoint<T> point() const
            {
                return TPoint<T>(left, top);
            }

            TSize<T> size() const
            {
                return TSize<T>(width, height);
            }

            bool inside(const TPoint<T>&  _value) const
            {
                return ((_value.left >= left) && (_value.left <= right()) && (_value.top >= top) && (_value.top <= bottom()));
            }

            std::string print() const
            {
                std::ostringstream stream;
                stream << *this;
                return stream.str();
            }

            static TCoord<T> parse(const std::string& _value)
            {
                TCoord<T> result;
                std::istringstream stream(_value);
                stream >> result.left >> result.top >> result.width >> result.height;
                if (stream.fail())
                {
                    return TCoord<T>();
                }
                else
                {
                    int item = stream.get();
                    while (item != -1)
                    {
                        if (item != ' ' && item != '\t')
                            return TCoord<T>();
                        item = stream.get();
                    }
                }
                return result;
            }

            friend std::ostream& operator << (std::ostream& _stream, const TCoord<T>&  _value)
            {
                _stream << _value.left << " " << _value.top << " " << _value.width << " " << _value.height;
                return _stream;
            }

            friend std::istream& operator >> (std::istream& _stream, TCoord<T>&  _value)
            {
                _stream >> _value.left >> _value.top >> _value.width >> _value.height;
                if (_stream.fail())
                    _value.clear();
                return _stream;
            }
        };

    } // namespace types

} // namespace MyGUI

#endif // __MyGUI_TCOORD_H__