jogshuttle.h

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// $Id: jogshuttle.h,v 1.12 2007/02/20 06:32:05 ddennedy Exp $

/*
 * Copyright (C) 2001 Tomoaki Hayasaka <hayasakas@postman.riken.go.jp>
 * Copyright (C) 2001-2007 Dan Dennedy <dan@dennedy.org>
 *
 * 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 JOGSHUTTLE_H
#define JOGSHUTTLE_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gtk/gtk.h>
#include "mediactrl.h"

typedef void ( *JogShuttleCallback ) ( void *, unsigned short, unsigned short );

class JogShuttle 
{ 
private: 
    static JogShuttle *_instance; 
    JogShuttleCallback _callback; 
    void * _callbackdata;

protected:
    friend void JogShuttle_inputCallback( gpointer data, gint source,
                                          GdkInputCondition condition );
    void inputCallback( gint source, GdkInputCondition condition );
    JogShuttle();

public:
    ~JogShuttle();
    bool start();
    void stop();
    static JogShuttle &getInstance();
    void registerCallback( void * user, JogShuttleCallback callback );
    void deregisterCallback();
    struct media_ctrl_key *getKeyset();

private:
    void jog( int dir );
    void shuttle( int angle );
    void button( struct media_ctrl_event * );
    void    button_old( int code );

    struct media_ctrl _ctrl;
    int input_;
    gint monitorTag_;

    /* Used to keep track of "modifier" keys - only the buttons
       can be used, only the code is used */
    unsigned short _modifier_code;
    media_ctrl_key *_modifier;
};

#endif

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