path: root/src/gui/sdlinput.h

/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
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 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naess�n and Per Larsson
 * Copyright (C) 2007-2010  The Mana World Development Team
 * Copyright (C) 2010-2012  The Mana Developers
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naess�n a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
 * Visit: http://guichan.darkbits.org             )Qk<P ` _: :+' .'  "{[
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 */

#ifndef SDLINPUT_H
#define SDLINPUT_H

#include <queue>

#include <SDL.h>

#include <guichan/input.hpp>
#include <guichan/keyinput.hpp>
#include <guichan/mouseinput.hpp>
#include <guichan/platform.hpp>

#include <string>

namespace Key
{
    enum
    {
        SPACE              = ' ',
        TAB                = '\t',
        ENTER              = '\n',
        // Negative values, to avoid conflicts with higher character codes.
        LEFT_ALT           = -1000,
        RIGHT_ALT,
        LEFT_SHIFT,
        RIGHT_SHIFT,
        LEFT_CONTROL,
        RIGHT_CONTROL,
        LEFT_META,
        RIGHT_META,
        LEFT_SUPER,
        RIGHT_SUPER,
        INSERT,
        HOME,
        PAGE_UP,
        DELETE_KEY,
        END,
        PAGE_DOWN,
        ESCAPE,
        CAPS_LOCK,
        BACKSPACE,
        F1,
        F2,
        F3,
        F4,
        F5,
        F6,
        F7,
        F8,
        F9,
        F10,
        F11,
        F12,
        F13,
        F14,
        F15,
        PRINT_SCREEN,
        SCROLL_LOCK,
        PAUSE,
        NUM_LOCK,
        ALT_GR,
        LEFT,
        RIGHT,
        UP,
        DOWN
    };
}

class TextInput
{
public:
    TextInput(const char *text)
        : mText(text)
    {}

    const std::string &getText() const { return mText; }

private:
    std::string mText;
};

/**
 * SDL implementation of Input.
 */
class SDLInput : public gcn::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.
     */
    void _pollInput() override { }


    // Inherited from Input

    bool isKeyQueueEmpty() override;

    gcn::KeyInput dequeueKeyInput() override;

    bool isMouseQueueEmpty() override;

    gcn::MouseInput dequeueMouseInput() override;

    bool isTextQueueEmpty() const;

    TextInput dequeueTextInput();

protected:
    /**
     * Converts a mouse button from SDL to a Guichan mouse button
     * representation.
     *
     * @param button an SDL mouse button.
     * @return a Guichan mouse button.
     */
    static 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
     */
    static int convertKeyCharacter(SDL_Event event);

    std::queue<gcn::KeyInput> mKeyInputQueue;
    std::queue<gcn::MouseInput> mMouseInputQueue;
    std::queue<TextInput> mTextInputQueue;

    bool mMouseDown = false;
};

#endif