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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/*
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libSDL2pp - C++11 bindings/wrapper for SDL2
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Copyright (C) 2017 Vraiment <jemc44@gmail.com>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef SDL2PP_PRIVATE_EVENTHANDLER_HH
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#define SDL2PP_PRIVATE_EVENTHANDLER_HH
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#include <SDL2pp/Private/EventHandlerFunctor.hh>
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#include <SDL2pp/Private/EventHandlerObject.hh>
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#include <SDL2pp/Private/Utility.hh>
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#include <tuple>
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#include <type_traits>
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#include <SDL_events.h>
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namespace SDL2pp {
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/*
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* This is code not to be used directly by users of SDL2pp.
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*/
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namespace Private {
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/*
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* Tuple containing all the valid events that can be handled.
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*/
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using ValidEventTypes = std::tuple<
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SDL_Event,
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SDL_AudioDeviceEvent,
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SDL_ControllerAxisEvent,
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SDL_ControllerButtonEvent,
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SDL_ControllerDeviceEvent,
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SDL_DollarGestureEvent,
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SDL_DropEvent,
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SDL_JoyAxisEvent,
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SDL_JoyBallEvent,
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SDL_JoyButtonEvent,
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SDL_JoyDeviceEvent,
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SDL_JoyHatEvent,
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SDL_KeyboardEvent,
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SDL_MouseButtonEvent,
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SDL_MouseMotionEvent,
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SDL_MouseWheelEvent,
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SDL_MultiGestureEvent,
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SDL_QuitEvent,
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SDL_SysWMEvent,
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SDL_TextEditingEvent,
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SDL_TextInputEvent,
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SDL_TouchFingerEvent,
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SDL_UserEvent,
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SDL_WindowEvent
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>;
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/*
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* Templated class to identify a class that is not an event handler.
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*/
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template <typename, typename, typename = void>
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struct IsEventHandler : std::false_type { };
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/*
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* Templated class to identify a type that is an event handler, the type
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* EventHandlerType is considered to be an event handler if is either an
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* event handler object or an event handler functor for the given event
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* type. Also the event type must be a valid SDL event type.
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*
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* In other words, any of the following code can be executed:
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* {
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* EventType event;
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* EventHandlerType eventHandler;
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* eventHandler(event);
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* // or
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* eventHandler.HandleEvent(event);
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* }
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*/
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template <typename EventHandlerType, typename EventType>
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struct IsEventHandler<
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EventHandlerType,
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EventType,
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And<
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Or<
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IsEventHandlerObject<EventHandlerType, EventType>,
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IsEventHandlerFunctor<EventHandlerType, EventType>
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>,
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TupleHasType<EventType, ValidEventTypes>
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>
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> : std::true_type { };
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}
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}
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#endif
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