gtk2_ardour/midi_region_view.h

   1 /*
   2     Copyright (C) 2001-2007 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 __gtk_ardour_midi_region_view_h__
  20 #define __gtk_ardour_midi_region_view_h__
  21
  22 #include <vector>
  23
  24 #include <libgnomecanvasmm.h>
  25 #include <libgnomecanvasmm/polygon.h>
  26 #include <ardour/midi_track.h>
  27 #include <ardour/midi_region.h>
  28 #include <ardour/midi_model.h>
  29 #include <ardour/diskstream.h>
  30 #include <ardour/types.h>
  31
  32 #include "region_view.h"
  33 #include "midi_time_axis.h"
  34 #include "time_axis_view_item.h"
  35 #include "automation_line.h"
  36 #include "enums.h"
  37 #include "canvas.h"
  38 #include "canvas-note.h"
  39 #include "canvas-midi-event.h"
  40
  41 namespace ARDOUR {
  42         class MidiRegion;
  43         class MidiModel;
  44 };
  45
  46 class MidiTimeAxisView;
  47 class GhostRegion;
  48 class AutomationTimeAxisView;
  49 class AutomationRegionView;
  50
  51 class MidiRegionView : public RegionView
  52 {
  53   public:
  54         MidiRegionView (ArdourCanvas::Group *,
  55                         RouteTimeAxisView&,
  56                         boost::shared_ptr<ARDOUR::MidiRegion>,
  57                         double initial_samples_per_unit,
  58                         Gdk::Color& basic_color);
  59
  60         ~MidiRegionView ();
  61
  62         virtual void init (Gdk::Color& basic_color, bool wfd);
  63
  64         inline const boost::shared_ptr<ARDOUR::MidiRegion> midi_region() const
  65                 { return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region); }
  66
  67         inline MidiTimeAxisView* midi_view() const
  68                 { return dynamic_cast<MidiTimeAxisView*>(&trackview); }
  69
  70         inline MidiStreamView* midi_stream_view() const
  71                 { return midi_view()->midi_view(); }
  72
  73         void set_y_position_and_height (double, double);
  74
  75         void set_frame_color();
  76
  77         void redisplay_model();
  78
  79         GhostRegion* add_ghost (TimeAxisView&);
  80
  81         void add_note(const boost::shared_ptr<ARDOUR::Note> note);
  82         void resolve_note(uint8_t note_num, double end_time);
  83
  84         void begin_write();
  85         void end_write();
  86         void extend_active_notes();
  87
  88         void create_note_at(double x, double y, double dur);
  89
  90         void display_model(boost::shared_ptr<ARDOUR::MidiModel> model);
  91
  92         /* This stuff is a bit boilerplatey ATM.  Work in progress. */
  93
  94         inline void start_remove_command() {
  95                 if (!_delta_command)
  96                         _delta_command = _model->new_delta_command();
  97         }
  98
  99         inline void start_delta_command() {
 100                 if (!_delta_command)
 101                         _delta_command = _model->new_delta_command();
 102         }
 103
 104         void command_add_note(const boost::shared_ptr<ARDOUR::Note> note) {
 105                 if (_delta_command)
 106                         _delta_command->add(note);
 107         }
 108
 109         void command_remove_note(ArdourCanvas::CanvasMidiEvent* ev) {
 110                 if (_delta_command && ev->note()) {
 111                         _delta_command->remove(ev->note());
 112                         ev->selected(true);
 113                 }
 114         }
 115
 116         void abort_command() {
 117                 delete _delta_command;
 118                 _delta_command = NULL;
 119                 clear_selection();
 120         }
 121
 122         void apply_command() {
 123                 if (_delta_command) {
 124                         _model->apply_command(_delta_command);
 125                         _delta_command = NULL;
 126                 }
 127                 midi_view()->midi_track()->diskstream()->playlist_modified();
 128         }
 129
 130         void   note_entered(ArdourCanvas::CanvasMidiEvent* ev);
 131         void   unique_select(ArdourCanvas::CanvasMidiEvent* ev);
 132         void   note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add);
 133         void   note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add);
 134         void   delete_selection();
 135         size_t selection_size() { return _selection.size(); }
 136
 137         void move_selection(double dx, double dy);
 138         void note_dropped(ArdourCanvas::CanvasMidiEvent* ev, double dt, uint8_t dnote);
 139
 140         enum MouseState { None, Pressed, SelectTouchDragging, SelectRectDragging, AddDragging, EraseTouchDragging };
 141         MouseState mouse_state() const { return _mouse_state; }
 142
 143   protected:
 144
 145     /* this constructor allows derived types
 146        to specify their visibility requirements
 147        to the TimeAxisViewItem parent class
 148     */
 149
 150     MidiRegionView (ArdourCanvas::Group *,
 151                         RouteTimeAxisView&,
 152                         boost::shared_ptr<ARDOUR::MidiRegion>,
 153                         double samples_per_unit,
 154                         Gdk::Color& basic_color,
 155                         TimeAxisViewItem::Visibility);
 156
 157     void region_resized (ARDOUR::Change);
 158
 159     void set_flags (XMLNode *);
 160     void store_flags ();
 161
 162         void reset_width_dependent_items (double pixel_width);
 163
 164   private:
 165
 166         void clear_events();
 167         void switch_source(boost::shared_ptr<ARDOUR::Source> src);
 168
 169         bool canvas_event(GdkEvent* ev);
 170         bool note_canvas_event(GdkEvent* ev);
 171
 172         void clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev);
 173         void clear_selection() { clear_selection_except(NULL); }
 174         void update_drag_selection(double last_x, double x, double last_y, double y);
 175
 176         double _default_note_length;
 177
 178         boost::shared_ptr<ARDOUR::MidiModel>        _model;
 179         std::vector<ArdourCanvas::CanvasMidiEvent*> _events;
 180         ArdourCanvas::CanvasNote**                  _active_notes;
 181         ArdourCanvas::Group*                        _note_group;
 182         ARDOUR::MidiModel::DeltaCommand*            _delta_command;
 183
 184         MouseState _mouse_state;
 185         int _pressed_button;
 186
 187         typedef std::set<ArdourCanvas::CanvasMidiEvent*> Selection;
 188         Selection _selection;
 189 };
 190
 191 #endif /* __gtk_ardour_midi_region_view_h__ */