joystickinputhandler.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2004 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// 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 2 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 INPUT_JOYSTICKINPUTHANDLER_H
#define INPUT_JOYSTICKINPUTHANDLER_H
//------------------------------------------------------------------------------

#include "CommandInputHandler.h"

#include "sched/Schedulable.h"
#include "sched/FDWaitCondition.h"

//------------------------------------------------------------------------------

namespace input {

//------------------------------------------------------------------------------

/**
 * Input handler for joysticks.
 */
class JoystickInputHandler : public sched::Schedulable,
                             public CommandInputHandler
{
private:
    /**
     * Indicate if the axes has been deflected.
     */
    typedef enum axisPosition_t {
        /// Center position (i.e. not deflected too much)
        CENTERED,
        
        /// Deflected left (or down, or whatever)
        LEFT,

        /// Deflected right (or up, or whatever)
        RIGHT
    };

    /**
     * Get the axis position for the given value.
     */
    static axisPosition_t getPosition(int value);

    /**
     * Condition for input being available from the joystick.
     */
    sched::FDReadableWaitCondition inputReadable;

    /**
     * The last positions of the axes.
     */
    axisPosition_t* axisPositions;

public:
    /**
     * Construct the joystick input handler.
     */
    JoystickInputHandler(InputListener& listener);

    /**
     * Destroy the joystick input handler.
     */
    ~JoystickInputHandler();

    /**
     * @see sched::Schedulable::run
     */
    virtual void run();

};

//------------------------------------------------------------------------------

} /* namespace input */

//------------------------------------------------------------------------------
#endif // INPUT_JOYSTICKINPUTHANDLER_H

// Local variables:
// mode: c++
// End: