TGUI  0.7.4
WidgetConverter.hpp
1 //
3 // TGUI - Texus's Graphical User Interface
4 // Copyright (C) 2012-2017 Bruno Van de Velde (vdv_b@tgui.eu)
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6 // This software is provided 'as-is', without any express or implied warranty.
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24 
25 
26 #ifndef TGUI_WIDGET_CONVERTER_HPP
27 #define TGUI_WIDGET_CONVERTER_HPP
28 
29 
30 #include <TGUI/Widget.hpp>
31 
33 
34 namespace tgui
35 {
40  class TGUI_API WidgetConverter
41  {
42  public:
43 
48  explicit WidgetConverter(Widget::Ptr widget);
49 
50 
55  operator Widget::Ptr();
56 
57 
62  template <class T>
63  operator std::shared_ptr<T>()
64  {
65  std::shared_ptr<T> result = std::dynamic_pointer_cast<T>(m_widget);
66 
67  if (result == nullptr)
68  throw Exception{"Value returned by Theme::load must match type of variable!"};
69 
70  return result;
71  }
72 
74  private:
75  Widget::Ptr m_widget;
76  };
77 
79 }
80 
82 
83 #endif // TGUI_WIDGET_CONVERTER_HPP
Namespace that contains all TGUI functions and classes.
Definition: Animation.hpp:33
Definition: Exception.hpp:44
Implicit converter for widgets returned by the load function of the theme.
Definition: WidgetConverter.hpp:40
std::shared_ptr< Widget > Ptr
Shared widget pointer.
Definition: Widget.hpp:75