non/Timeline/Tempo_Sequence.H

102 lines
3.1 KiB
C++

/*******************************************************************************/
/* 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:
Fl_Cursor cursor ( void ) const { return FL_CURSOR_DEFAULT; }
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();
}
int
handle ( int m )
{
int r = Sequence::handle( m );
if ( r )
return r;
switch ( m )
{
case FL_PUSH:
if ( Fl::event_button1() )
{
static float t = 120.0f;
if ( Tempo_Point::edit( &t ) )
{
add( new Tempo_Point( timeline->x_to_offset( Fl::event_x() ), t ) );
timeline->redraw();
}
return 0;
}
default:
return 0;
}
}
};