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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_FLOW_DIRECTION_H_
#define MYGUI_FLOW_DIRECTION_H_
#include "MyGUI_Prerequest.h"
#include <string>
#include <string.h>
#include <iostream>
namespace MyGUI
{
struct MYGUI_EXPORT FlowDirection
{
enum Enum
{
LeftToRight,
RightToLeft,
TopToBottom,
BottomToTop,
MAX
};
FlowDirection(Enum _value = LeftToRight) :
mValue(_value)
{
}
static FlowDirection parse(std::string_view _value)
{
FlowDirection type;
int value = 0;
while (true)
{
std::string_view name = type.getValueName(value);
if (name.empty() || name == _value)
break;
value++;
}
type.mValue = static_cast<Enum>(value);
return type;
}
bool isHorizontal() const
{
return mValue == LeftToRight || mValue == RightToLeft;
}
bool isVertical() const
{
return !isHorizontal();
}
friend bool operator==(FlowDirection const& a, FlowDirection const& b)
{
return a.mValue == b.mValue;
}
friend bool operator!=(FlowDirection const& a, FlowDirection const& b)
{
return a.mValue != b.mValue;
}
friend std::ostream& operator<<(std::ostream& _stream, const FlowDirection& _value)
{
_stream << _value.getValueName(_value.mValue);
return _stream;
}
friend std::istream& operator>>(std::istream& _stream, FlowDirection& _value)
{
std::string value;
_stream >> value;
_value = parse(value);
return _stream;
}
std::string_view print() const
{
return getValueName(mValue);
}
int getValue() const
{
return mValue;
}
private:
std::string_view getValueName(int _index) const
{
if (_index < 0 || _index >= MAX)
return {};
static const std::string_view values[MAX] = {"LeftToRight", "RightToLeft", "TopToBottom", "BottomToTop"};
return values[_index];
}
private:
Enum mValue;
};
} // namespace MyGUI
#endif // MYGUI_FLOW_DIRECTION_H_
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