event_handler.hpp

//  SuperTuxKart - a fun racing game with go-kart
//  Copyright (C) 2010-2015 Marianne Gagnon
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the GNU General Public License
//  as published by the Free Software Foundation; either version 3
//  of the License, or (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
#ifndef HEADER_EVENT_HANDLER_HPP
#define HEADER_EVENT_HANDLER_HPP
 
#include <vector2d.h>
#include <IEventReceiver.h>
#include "input/input.hpp"
#include "utils/leak_check.hpp"
 
namespace GUIEngine
{
 
    enum EventPropagation
    {
        EVENT_BLOCK,
        EVENT_BLOCK_BUT_HANDLED,
        EVENT_LET
    };
 
    enum NavigationDirection
    {
        NAV_LEFT,
        NAV_RIGHT,
        NAV_UP,
        NAV_DOWN
    };
 
    class Widget;
 
    class EventHandler : public irr::IEventReceiver
    {
        bool m_accept_events;
        
        EventPropagation onGUIEvent(const irr::SEvent& event);
        EventPropagation onWidgetActivated(Widget* w, const int playerID, Input::InputType type);
        void sendNavigationEvent(const NavigationDirection nav, const int playerID);
        void navigate(const NavigationDirection nav, const int playerID);
 
        void sendEventToUser(Widget* widget, std::string& name, const int playerID);
 
        irr::core::vector2di     m_mouse_pos;
 
    public:
 
        LEAK_CHECK()
 
        EventHandler();
        ~EventHandler();
 
        bool OnEvent (const irr::SEvent &event);
 
        void processGUIAction(const PlayerAction action, int deviceID, const unsigned int value,
                              Input::InputType type, const int playerID);
 
        const irr::core::vector2di& getMousePos() const { return m_mouse_pos; }
 
        static EventHandler* get();
        static void deallocate();
        
        void setAcceptEvents(bool value) { m_accept_events = value; }
        int findIDClosestWidget(const NavigationDirection nav, const int playerID,
                                Widget* w, bool ignore_disabled, int recursion_counter=1);
    };
 
}
 
#endif