WidgetConverter.hpp

 
//
// TGUI - Texus's Graphical User Interface
// Copyright (C) 2012-2017 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_WIDGET_CONVERTER_HPP
#define TGUI_WIDGET_CONVERTER_HPP
 
 
#include <TGUI/Widget.hpp>
 
 
namespace tgui
{
 class TGUI_API WidgetConverter
 {
 public:
 
 explicit WidgetConverter(Widget::Ptr widget);
 
 
 operator Widget::Ptr();
 
 
 template <class T>
 operator std::shared_ptr<T>()
 {
 std::shared_ptr<T> result = std::dynamic_pointer_cast<T>(m_widget);
 
 if (result == nullptr)
 throw Exception{"Value returned by Theme::load must match type of variable!"};
 
 return result;
 }
 
 private:
 Widget::Ptr m_widget;
 };
 
}
 
 
#endif // TGUI_WIDGET_CONVERTER_HPP