/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
 * Visit: http://guichan.darkbits.org             )Qk<P ` _: :+' .'  "{[
 *                                               .)j(] .d_/ '-(  P .   S
 * License: (BSD)                                <Td/Z <fP"5(\"??"\a.  .L
 * Redistribution and use in source and          _dV>ws?a-?'      ._/L  #'
 * binary forms, with or without                 )4d[#7r, .   '     )d`)[
 * modification, are permitted provided         _Q-5'5W..j/?'   -?!\)cam'
 * that the following conditions are met:       j<<WP+k/);.        _W=j f
 * 1. Redistributions of source code must       .$%w\/]Q  . ."'  .  mj$
 *    retain the above copyright notice,        ]E.pYY(Q]>.   a     J@\
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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 */

#ifndef GCN_SDLINPUT_HPP
#define GCN_SDLINPUT_HPP

#include <queue>

#include "SDL.h"

#include "guisan/input.hpp"
#include "guisan/keyinput.hpp"
#include "guisan/mouseinput.hpp"
#include "guisan/platform.hpp"

namespace gcn
{
    class Key;

    /**
     * SDL implementation of Input.
     */
    class GCN_EXTENSION_DECLSPEC SDLInput : public Input
    {
    public:

        /**
         * Constructor.
         */
        SDLInput();

        /**
         * Pushes an SDL event. It should be called at least once per frame to
         * update input with user input.
         *
         * @param event an event from SDL.
         */
        virtual void pushInput(SDL_Event event);

        /**
         * Polls all input. It exists for input driver compatibility. If you
         * only use SDL and plan sticking with SDL you can safely ignore this
         * function as it in the SDL case does nothing.
         */
        virtual void _pollInput() { }


        // Inherited from Input

        virtual bool isKeyQueueEmpty();

        virtual KeyInput dequeueKeyInput();

        virtual bool isMouseQueueEmpty();

        virtual MouseInput dequeueMouseInput();

    protected:
        /**
         * Converts a mouse button from SDL to a Guisan mouse button
         * representation.
         *
         * @param button an SDL mouse button.
         * @return a Guisan mouse button.
         */
        int convertMouseButton(int button);

        /**
         * Converts an SDL event key to a key value.
         *
         * @param event an SDL event with a key to convert.
         * @return a key value.
         * @see Key
         */
        int convertKeyCharacter(SDL_Event event);

        std::queue<KeyInput> mKeyInputQueue;
        std::queue<MouseInput> mMouseInputQueue;

        bool mMouseDown;
        bool mMouseInWindow;
    };
}

#endif // end GCN_SDLINPUT_HPP