merge with master, including manual merge conflict resolution
[ardour.git] / gtk2_ardour / tempo_lines.h
1 /*
2     Copyright (C) 2000-2007 Paul Davis
3
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU General Public License as published by
6     the Free Software Foundation; either version 2 of the License, or
7     (at your option) any later version.
8
9     This program is distributed in the hope that it will be useful,
10     but WITHOUT ANY WARRANTY; without even the implied warranty of
11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12     GNU General Public License for more details.
13
14     You should have received a copy of the GNU General Public License
15     along with this program; if not, write to the Free Software
16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19 #ifndef __ardour_tempo_lines_h__
20 #define __ardour_tempo_lines_h__
21
22 #include <map>
23 #include <boost/pool/pool.hpp>
24 #include <boost/pool/pool_alloc.hpp>
25 #include "ardour/tempo.h"
26
27 typedef boost::fast_pool_allocator<
28                 std::pair<const double, ArdourCanvas::Line*>,
29                 boost::default_user_allocator_new_delete,
30                 boost::details::pool::null_mutex,
31                 8192>
32         MapAllocator;
33
34 class TempoLines {
35 public:
36         TempoLines(ArdourCanvas::GtkCanvasViewport& canvas, ArdourCanvas::Group* group, double screen_height);
37
38         void tempo_map_changed();
39
40         void draw(const ARDOUR::TempoMap::BBTPointList::const_iterator& begin, 
41                   const ARDOUR::TempoMap::BBTPointList::const_iterator& end, 
42                   double frames_per_unit);
43
44         void show();
45         void hide();
46
47 private:
48         typedef std::map<double, ArdourCanvas::Line*, std::less<double>, MapAllocator> Lines;
49         Lines _lines;
50
51         ArdourCanvas::GtkCanvasViewport& _canvas_viewport;
52         ArdourCanvas::Group*  _group;
53         double                _clean_left;
54         double                _clean_right;
55         double                _height;
56 };
57
58 #endif /* __ardour_tempo_lines_h__ */