non/Tempo_Point.H

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/*******************************************************************************/
/* 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 "Track_Point.H"
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#define __CLASS__ "Tempo_Point"
class Tempo_Point : public Track_Point
{
float _tempo;
void
_make_label ( void )
{
if ( ! _label )
_label = new char[40];
snprintf( _label, 40, "%.1f", _tempo );
}
protected:
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const char *class_name ( void ) { return "Tempo_Point"; }
char ** get ( void )
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{
char **sa = (char**)malloc( sizeof( char* ) * 4 );
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int i = 0;
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asprintf( &sa[i++], ":track 0x%X", _track ? _track->id() : 0 );
asprintf( &sa[i++], ":x %lu", _offset );
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asprintf( &sa[i++], ":tempo %.2f", _tempo );
sa[i] = NULL;
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return sa;
}
void
set ( char **sa )
{
for ( int i = 0; sa[i]; ++i )
{
char *s = sa[i];
strtok( s, " " );
char *v = s + strlen( s ) + 1;
if ( ! strcmp( s, ":x" ) )
_offset = atol( v );
else
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if ( ! strcmp( s, ":tempo" ) )
_tempo = atof( v );
else
if ( ! strcmp( s, ":track" ) )
{
int i;
sscanf( v, "%X", &i );
Track *t = (Track*)Loggable::find( i );
assert( t );
t->add( this );
}
free( s );
}
free( sa );
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timeline->redraw();
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_make_label();
}
Tempo_Point ( )
{
}
public:
/* for loggable */
static Loggable *
create ( char **sa )
{
Tempo_Point *r = new Tempo_Point;
r->set( sa );
return (Loggable *)r;
}
Tempo_Point ( nframes_t when, float bpm )
{
_tempo = bpm;
_offset = when;
_make_label();
log_create();
}
~Tempo_Point ( )
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{
if ( _label ) delete[] _label;
log_destroy();
}
float tempo ( void ) const { return _tempo; }
void tempo ( float v ) { _tempo = v; }
int
handle ( int m )
{
int r = Track_Widget::handle( m );
if ( m == FL_RELEASE )
{
_track->sort();
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timeline->redraw();
}
return r;
}
};
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#undef __CLASS__