gtk2_ardour/tempo_lines.h

   1 /*
   2  * Copyright (C) 2007-2015 David Robillard <d@drobilla.net>
   3  * Copyright (C) 2012-2017 Paul Davis <paul@linuxaudiosystems.com>
   4  * Copyright (C) 2015-2017 Nick Mainsbridge <mainsbridge@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifndef __ardour_tempo_lines_h__
  22 #define __ardour_tempo_lines_h__
  23
  24 #include "ardour/beats_samples_converter.h"
  25 #include "ardour/tempo.h"
  26
  27 #include "canvas/line_set.h"
  28
  29 class TempoLines {
  30 public:
  31         TempoLines (ArdourCanvas::Container* group, double screen_height, ARDOUR::BeatsSamplesConverter* bfc);
  32         ~TempoLines ();
  33
  34         void tempo_map_changed(samplepos_t new_origin);
  35
  36         void draw (std::vector<ARDOUR::TempoMap::BBTPoint>& grid,
  37                    unsigned                                 divisions,
  38                    ARDOUR::samplecnt_t                      leftmost_sample,
  39                    ARDOUR::samplecnt_t                      sample_rate);
  40
  41         void show();
  42         void hide();
  43
  44 private:
  45         void draw_ticks (std::vector<ARDOUR::TempoMap::BBTPoint>& grid,
  46                          unsigned                                 divisions,
  47                          ARDOUR::samplecnt_t                      leftmost_sample,
  48                          ARDOUR::samplecnt_t                      sample_rate);
  49
  50         ArdourCanvas::LineSet lines;
  51         ARDOUR::BeatsSamplesConverter* _bfc;
  52 };
  53
  54 #endif /* __ardour_tempo_lines_h__ */