Ardour  9.0-pre0-582-g084a23a80d
midi_view_background.h
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1 /*
2  * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
3  * Copyright (C) 2007 Doug McLain <doug@nostar.net>
4  * Copyright (C) 2008-2017 Paul Davis <paul@linuxaudiosystems.com>
5  * Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
6  * Copyright (C) 2016-2017 Robin Gareus <robin@gareus.org>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with this program; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 #ifndef __gtk2_ardour_midi_view_background_h__
24 #define __gtk2_ardour_midi_view_background_h__
25 
26 #include <cstdint>
27 
28 #include <gtkmm/adjustment.h>
29 
30 #include "pbd/signals.h"
31 
32 #include "ardour/types.h"
33 
34 #include "gtkmm2ext/colors.h"
35 
36 #include "view_background.h"
37 
38 namespace ArdourCanvas {
39  class Item;
40  class LineSet;
41 }
42 
49 class MidiViewBackground : public virtual ViewBackground
50 {
51  public:
54 
56 
60  };
61 
64 
67 
69 
72 
73  inline uint8_t lowest_note() const { return _lowest_note; }
74  inline uint8_t highest_note() const { return _highest_note; }
75 
76  void maybe_extend_note_range (uint8_t note_num);
77 
78  double note_to_y (uint8_t note) const {
79  return contents_height() - (note + 1 - lowest_note()) * note_height() + 1;
80  }
81 
82  uint8_t y_to_note(double y) const;
83 
84  uint8_t contents_note_range() const {
85  return highest_note() - lowest_note() + 1;
86  }
87 
88  double note_height() const {
89  return contents_height() / (double)contents_note_range();
90  }
91 
92  sigc::signal<void> NoteRangeChanged;
93  void apply_note_range (uint8_t lowest, uint8_t highest, bool to_children);
94 
96  virtual double y_position () const { return 0.; }
97 
98  virtual uint8_t get_preferred_midi_channel () const = 0;
99  virtual void set_note_highlight (bool) = 0;
100  virtual void record_layer_check (std::shared_ptr<ARDOUR::Region>, samplepos_t) = 0;
101 
102  virtual void set_size (double w, double h) {}
104 
105  protected:
108  uint8_t _lowest_note;
109  uint8_t _highest_note;
110  uint8_t _data_note_min;
111  uint8_t _data_note_max;
117 
118  void color_handler ();
119  void parameter_changed (std::string const &);
122  bool update_data_note_range (uint8_t min, uint8_t max);
124  virtual void apply_note_range_to_children () = 0;
125  virtual bool updates_suspended() const { return false; }
126 
128 };
129 
130 
131 #endif /* __gtk2_ardour_midi_view_background_h__ */
ArdourCanvas::LineSet * _note_lines
uint8_t y_to_note(double y) const
ARDOUR::ColorMode _color_mode
void set_note_visibility_range_style(VisibleNoteRange r)
void set_color_mode(ARDOUR::ColorMode)
double note_to_y(uint8_t note) const
void update_contents_height()
void sync_data_and_visual_range()
ARDOUR::NoteMode note_mode() const
virtual void apply_note_range_to_children()=0
virtual void set_note_highlight(bool)=0
VisibleNoteRange _visibility_note_range
MidiViewBackground(ArdourCanvas::Item *parent)
virtual void set_size(double w, double h)
uint8_t lowest_note() const
virtual bool updates_suspended() const
uint8_t _data_note_min
in data
void maybe_extend_note_range(uint8_t note_num)
double note_height() const
VisibleNoteRange visibility_range_style() const
void set_note_mode(ARDOUR::NoteMode nm)
Gtk::Adjustment note_range_adjustment
uint8_t contents_note_range() const
void note_range_adjustment_changed()
PBD::Signal< void()> HeightChanged
ARDOUR::ColorMode color_mode() const
bool update_data_note_range(uint8_t min, uint8_t max)
void apply_note_range(uint8_t lowest, uint8_t highest, bool to_children)
uint8_t _highest_note
currently visible
ARDOUR::NoteMode _note_mode
uint8_t _data_note_max
in data
virtual uint8_t get_preferred_midi_channel() const =0
Gtkmm2ext::Color _region_color
sigc::signal< void > NoteRangeChanged
virtual double y_position() const
virtual void record_layer_check(std::shared_ptr< ARDOUR::Region >, samplepos_t)=0
uint8_t highest_note() const
Gtkmm2ext::Color region_color() const
void parameter_changed(std::string const &)
uint8_t _lowest_note
currently visible
virtual double contents_height() const
Temporal::samplepos_t samplepos_t
uint32_t Color
Definition: colors.h:33