gtk2_ardour/midi_streamview.h

   1 /*
   2     Copyright (C) 2001, 2006 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_midi_streamview_h__
  20 #define __ardour_midi_streamview_h__
  21
  22 #include <list>
  23 #include <cmath>
  24
  25 #include "ardour/location.h"
  26 #include "enums.h"
  27 #include "streamview.h"
  28 #include "time_axis_view_item.h"
  29 #include "route_time_axis.h"
  30 #include "canvas.h"
  31
  32 namespace Gdk {
  33         class Color;
  34 }
  35
  36 namespace ARDOUR {
  37         class Route;
  38         class Crossfade;
  39         class PeakData;
  40         class MidiRegion;
  41         class Source;
  42         class MidiModel;
  43 }
  44
  45 class PublicEditor;
  46 class Selectable;
  47 class MidiTimeAxisView;
  48 class MidiRegionView;
  49 class RegionSelection;
  50 class CrossfadeView;
  51 class Selection;
  52
  53 class MidiStreamView : public StreamView
  54 {
  55   public:
  56         MidiStreamView (MidiTimeAxisView&);
  57         ~MidiStreamView ();
  58
  59         void set_selected_regionviews (RegionSelection&);
  60         void get_inverted_selectables (Selection&, std::list<Selectable* >& results);
  61
  62         enum VisibleNoteRange {
  63                 FullRange,
  64                 ContentsRange
  65         };
  66
  67         Gtk::Adjustment note_range_adjustment;
  68         ArdourCanvas::Group* midi_underlay_group;
  69
  70         void set_note_range(VisibleNoteRange r);
  71
  72         inline uint8_t lowest_note()  const { return _lowest_note; }
  73         inline uint8_t highest_note() const { return _highest_note; }
  74
  75         void update_note_range(uint8_t note_num);
  76
  77         void redisplay_track ();
  78
  79         inline double contents_height() const
  80         { return (child_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2); }
  81
  82         inline double note_to_y(uint8_t note) const
  83                 { return contents_height()
  84                         - (note + 1 - lowest_note()) * note_height() + 1; }
  85
  86         inline uint8_t y_to_note(double y) const
  87                 { return (uint8_t)((contents_height() - y - 1)
  88                                 / contents_height() * (double)contents_note_range())
  89                                 + lowest_note(); }
  90
  91         inline double note_height() const
  92                 { return contents_height() / (double)contents_note_range(); }
  93
  94         inline uint8_t contents_note_range() const
  95                 { return highest_note() - lowest_note() + 1; }
  96
  97         sigc::signal<void> NoteRangeChanged;
  98
  99         RegionView* create_region_view (boost::shared_ptr<ARDOUR::Region>, bool, bool);
 100
 101         void apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views);
 102
 103   private:
 104         void setup_rec_box ();
 105         void update_rec_box ();
 106
 107         RegionView* add_region_view_internal (
 108                 boost::shared_ptr<ARDOUR::Region>,
 109                 bool wait_for_waves,
 110                 bool recording = false);
 111
 112         void display_region(MidiRegionView* region_view, bool load_model);
 113         void display_track (boost::shared_ptr<ARDOUR::Track> tr);
 114
 115         void update_contents_height ();
 116
 117         void draw_note_lines();
 118         bool update_data_note_range(uint8_t min, uint8_t max);
 119         void update_contents_metrics(boost::shared_ptr<ARDOUR::Region> r);
 120
 121         void color_handler ();
 122
 123         void note_range_adjustment_changed();
 124
 125         bool                      _range_dirty;
 126         double                    _range_sum_cache;
 127         uint8_t                   _lowest_note;   ///< currently visible
 128         uint8_t                   _highest_note;  ///< currently visible
 129         uint8_t                   _data_note_min; ///< in data
 130         uint8_t                   _data_note_max; ///< in data
 131         ArdourCanvas::LineSet*    _note_lines;
 132 };
 133
 134 #endif /* __ardour_midi_streamview_h__ */