new-session-manager/Timeline/Tempo_Sequence.H

/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles                                     */
/*                                                                             */
/* 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; see the file COPYING.  If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
/*******************************************************************************/

#pragma once

#include "Sequence.H"
#include "Tempo_Point.H"

#include <list>

class Tempo_Sequence : public Sequence
{

public:

    Tempo_Sequence ( int X, int Y, int W, int H ) : Sequence ( X, Y, W, H )
        {
//            box( FL_DOWN_BOX );
        }


    /** return a pointer to the closest tempo point *before* /when/ */
    Tempo_Point *
    at ( nframes_t when )
        {
            for ( std::list <Sequence_Widget *>::const_reverse_iterator i = _widgets.rbegin();
                  i != _widgets.rend(); i++ )
                if ( (*i)->offset() < when )
                    return ((Tempo_Point*)(*i));

            return NULL;
        }

    float
    beats_per_minute ( nframes_t when )
        {
//            sort();

            Tempo_Point *p = at( when );

            if ( p )
                return p->tempo();
            else
                return 120.0;
        }

    void
    beats_per_minute ( nframes_t when, float bpm )
        {
            add( new Tempo_Point( when, bpm ) );
            sort();
        }

};