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livetrax/gtk2_ardour/tempo_lines.h

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/*
Copyright (C) 2000-2007 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_tempo_lines_h__
#define __ardour_tempo_lines_h__
#include <list>
#include "ardour/tempo.h"
class TempoLines {
public:
TempoLines(ArdourCanvas::Canvas& canvas, ArdourCanvas::Group* group, double screen_height);
void tempo_map_changed();
void draw (const ARDOUR::TempoMap::BBTPointList::const_iterator& begin,
const ARDOUR::TempoMap::BBTPointList::const_iterator& end,
double frames_per_unit);
void show();
void hide();
private:
typedef std::list<ArdourCanvas::Line*> Lines;
Lines _lines;
Lines _cache;
ArdourCanvas::Canvas& _canvas;
ArdourCanvas::Group* _group;
double _height;
};
#endif /* __ardour_tempo_lines_h__ */