tempo_lines.h

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/*
 * Copyright (C) 2007-2015 David Robillard <d@drobilla.net>
 * Copyright (C) 2012-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2015-2017 Nick Mainsbridge <mainsbridge@gmail.com>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __ardour_tempo_lines_h__
#define __ardour_tempo_lines_h__
 
#include "ardour/tempo.h"
 
#include "canvas/line_set.h"
 
class TempoLines {
public:
        TempoLines (ArdourCanvas::Container* group, double screen_height, ARDOUR::BeatsSamplesConverter* bfc);
        ~TempoLines ();
 
        void tempo_map_changed(samplepos_t new_origin);
 
        void draw (std::vector<ARDOUR::TempoMap::BBTPoint>& grid,
                   unsigned                                 divisions,
                   ARDOUR::samplecnt_t                      leftmost_sample,
                   ARDOUR::samplecnt_t                      sample_rate);
 
        void show();
        void hide();
 
private:
        void draw_ticks (std::vector<ARDOUR::TempoMap::BBTPoint>& grid,
                         unsigned                                 divisions,
                         ARDOUR::samplecnt_t                      leftmost_sample,
                         ARDOUR::samplecnt_t                      sample_rate);
 
        ArdourCanvas::LineSet lines;
        ARDOUR::BeatsSamplesConverter* _bfc;
};
 
#endif /* __ardour_tempo_lines_h__ */