75b7d4693aa788bede8b84403539f928c46b0da1
[ardour.git] / gtk2_ardour / midi_region_view.cc
1 /*
2     Copyright (C) 2001-2011 Paul Davis
3     Author: David Robillard
4
5     This program is free software; you can redistribute it and/or modify
6     it under the terms of the GNU General Public License as published by
7     the Free Software Foundation; either version 2 of the License, or
8     (at your option) any later version.
9
10     This program is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13     GNU General Public License for more details.
14
15     You should have received a copy of the GNU General Public License
16     along with this program; if not, write to the Free Software
17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20 #include <cmath>
21 #include <algorithm>
22 #include <ostream>
23
24 #include <gtkmm.h>
25
26 #include "gtkmm2ext/gtk_ui.h"
27
28 #include <sigc++/signal.h>
29
30 #include "midi++/midnam_patch.h"
31
32 #include "pbd/memento_command.h"
33 #include "pbd/stateful_diff_command.h"
34
35 #include "ardour/midi_model.h"
36 #include "ardour/midi_region.h"
37 #include "ardour/midi_source.h"
38 #include "ardour/midi_track.h"
39 #include "ardour/operations.h"
40 #include "ardour/session.h"
41
42 #include "evoral/Parameter.hpp"
43 #include "evoral/MIDIEvent.hpp"
44 #include "evoral/Control.hpp"
45 #include "evoral/midi_util.h"
46
47 #include "canvas/debug.h"
48 #include "canvas/text.h"
49
50 #include "automation_region_view.h"
51 #include "automation_time_axis.h"
52 #include "control_point.h"
53 #include "debug.h"
54 #include "editor.h"
55 #include "editor_drag.h"
56 #include "ghostregion.h"
57 #include "gui_thread.h"
58 #include "item_counts.h"
59 #include "keyboard.h"
60 #include "midi_channel_dialog.h"
61 #include "midi_cut_buffer.h"
62 #include "midi_list_editor.h"
63 #include "midi_region_view.h"
64 #include "midi_streamview.h"
65 #include "midi_time_axis.h"
66 #include "midi_util.h"
67 #include "midi_velocity_dialog.h"
68 #include "mouse_cursors.h"
69 #include "note_player.h"
70 #include "paste_context.h"
71 #include "public_editor.h"
72 #include "route_time_axis.h"
73 #include "rgb_macros.h"
74 #include "selection.h"
75 #include "streamview.h"
76 #include "patch_change_dialog.h"
77 #include "verbose_cursor.h"
78 #include "ardour_ui.h"
79 #include "note.h"
80 #include "hit.h"
81 #include "patch_change.h"
82 #include "sys_ex.h"
83
84 #include "i18n.h"
85
86 using namespace ARDOUR;
87 using namespace PBD;
88 using namespace Editing;
89 using namespace std;
90 using Gtkmm2ext::Keyboard;
91
92 PBD::Signal1<void, MidiRegionView *> MidiRegionView::SelectionCleared;
93
94 #define MIDI_BP_ZERO ((Config->get_first_midi_bank_is_zero())?0:1)
95
96 MidiRegionView::MidiRegionView (ArdourCanvas::Container*      parent,
97                                 RouteTimeAxisView&            tv,
98                                 boost::shared_ptr<MidiRegion> r,
99                                 double                        spu,
100                                 uint32_t                      basic_color)
101         : RegionView (parent, tv, r, spu, basic_color)
102         , _current_range_min(0)
103         , _current_range_max(0)
104         , _region_relative_time_converter(r->session().tempo_map(), r->position())
105         , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start())
106         , _active_notes(0)
107         , _note_group (new ArdourCanvas::Container (group))
108         , _note_diff_command (0)
109         , _ghost_note(0)
110         , _step_edit_cursor (0)
111         , _step_edit_cursor_width (1.0)
112         , _step_edit_cursor_position (0.0)
113         , _channel_selection_scoped_note (0)
114         , _temporary_note_group (0)
115         , _mouse_state(None)
116         , _pressed_button(0)
117         , _sort_needed (true)
118         , _optimization_iterator (_events.end())
119         , _list_editor (0)
120         , _no_sound_notes (false)
121         , _last_event_x (0)
122         , _last_event_y (0)
123         , _grabbed_keyboard (false)
124         , _entered (false)
125 {
126         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
127         _note_group->raise_to_top();
128         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
129
130         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
131         connect_to_diskstream ();
132
133         SelectionCleared.connect (_selection_cleared_connection, invalidator (*this), boost::bind (&MidiRegionView::selection_cleared, this, _1), gui_context ());
134
135         PublicEditor& editor (trackview.editor());
136         editor.get_selection().ClearMidiNoteSelection.connect (_clear_midi_selection_connection, invalidator (*this), boost::bind (&MidiRegionView::clear_midi_selection, this), gui_context ());
137 }
138
139 MidiRegionView::MidiRegionView (ArdourCanvas::Container*      parent,
140                                 RouteTimeAxisView&            tv,
141                                 boost::shared_ptr<MidiRegion> r,
142                                 double                        spu,
143                                 uint32_t                      basic_color,
144                                 bool                          recording,
145                                 TimeAxisViewItem::Visibility  visibility)
146         : RegionView (parent, tv, r, spu, basic_color, recording, visibility)
147         , _current_range_min(0)
148         , _current_range_max(0)
149         , _region_relative_time_converter(r->session().tempo_map(), r->position())
150         , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start())
151         , _active_notes(0)
152         , _note_group (new ArdourCanvas::Container (parent))
153         , _note_diff_command (0)
154         , _ghost_note(0)
155         , _step_edit_cursor (0)
156         , _step_edit_cursor_width (1.0)
157         , _step_edit_cursor_position (0.0)
158         , _channel_selection_scoped_note (0)
159         , _temporary_note_group (0)
160         , _mouse_state(None)
161         , _pressed_button(0)
162         , _sort_needed (true)
163         , _optimization_iterator (_events.end())
164         , _list_editor (0)
165         , _no_sound_notes (false)
166         , _last_event_x (0)
167         , _last_event_y (0)
168         , _grabbed_keyboard (false)
169         , _entered (false)
170 {
171         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
172         _note_group->raise_to_top();
173
174         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
175
176         connect_to_diskstream ();
177
178         SelectionCleared.connect (_selection_cleared_connection, invalidator (*this), boost::bind (&MidiRegionView::selection_cleared, this, _1), gui_context ());
179
180         PublicEditor& editor (trackview.editor());
181         editor.get_selection().ClearMidiNoteSelection.connect (_clear_midi_selection_connection, invalidator (*this), boost::bind (&MidiRegionView::clear_midi_selection, this), gui_context ());
182 }
183
184 void
185 MidiRegionView::parameter_changed (std::string const & p)
186 {
187         if (p == "display-first-midi-bank-as-zero") {
188                 if (_enable_display) {
189                         redisplay_model();
190                 }
191         }
192 }
193
194 MidiRegionView::MidiRegionView (const MidiRegionView& other)
195         : sigc::trackable(other)
196         , RegionView (other)
197         , _current_range_min(0)
198         , _current_range_max(0)
199         , _region_relative_time_converter(other.region_relative_time_converter())
200         , _source_relative_time_converter(other.source_relative_time_converter())
201         , _active_notes(0)
202         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
203         , _note_diff_command (0)
204         , _ghost_note(0)
205         , _step_edit_cursor (0)
206         , _step_edit_cursor_width (1.0)
207         , _step_edit_cursor_position (0.0)
208         , _channel_selection_scoped_note (0)
209         , _temporary_note_group (0)
210         , _mouse_state(None)
211         , _pressed_button(0)
212         , _sort_needed (true)
213         , _optimization_iterator (_events.end())
214         , _list_editor (0)
215         , _no_sound_notes (false)
216         , _last_event_x (0)
217         , _last_event_y (0)
218         , _grabbed_keyboard (false)
219         , _entered (false)
220 {
221         init (false);
222 }
223
224 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
225         : RegionView (other, boost::shared_ptr<Region> (region))
226         , _current_range_min(0)
227         , _current_range_max(0)
228         , _region_relative_time_converter(other.region_relative_time_converter())
229         , _source_relative_time_converter(other.source_relative_time_converter())
230         , _active_notes(0)
231         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
232         , _note_diff_command (0)
233         , _ghost_note(0)
234         , _step_edit_cursor (0)
235         , _step_edit_cursor_width (1.0)
236         , _step_edit_cursor_position (0.0)
237         , _channel_selection_scoped_note (0)
238         , _temporary_note_group (0)
239         , _mouse_state(None)
240         , _pressed_button(0)
241         , _sort_needed (true)
242         , _optimization_iterator (_events.end())
243         , _list_editor (0)
244         , _no_sound_notes (false)
245         , _last_event_x (0)
246         , _last_event_y (0)
247         , _grabbed_keyboard (false)
248         , _entered (false)
249 {
250         init (true);
251 }
252
253 void
254 MidiRegionView::init (bool wfd)
255 {
256         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
257
258         NoteBase::NoteBaseDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
259                                            boost::bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
260                                            gui_context());
261         
262         if (wfd) {
263                 Glib::Threads::Mutex::Lock lm(midi_region()->midi_source(0)->mutex());
264                 midi_region()->midi_source(0)->load_model(lm);
265         }
266
267         _model = midi_region()->midi_source(0)->model();
268         _enable_display = false;
269         fill_color_name = "midi frame base";
270
271         RegionView::init (false);
272
273         set_height (trackview.current_height());
274
275         region_muted ();
276         region_sync_changed ();
277         region_resized (ARDOUR::bounds_change);
278         region_locked ();
279
280         set_colors ();
281
282         _enable_display = true;
283         if (_model) {
284                 if (wfd) {
285                         display_model (_model);
286                 }
287         }
288
289         reset_width_dependent_items (_pixel_width);
290
291         group->raise_to_top();
292
293         midi_view()->midi_track()->PlaybackChannelModeChanged.connect (_channel_mode_changed_connection, invalidator (*this),
294                                                                        boost::bind (&MidiRegionView::midi_channel_mode_changed, this),
295                                                                        gui_context ());
296
297         instrument_info().Changed.connect (_instrument_changed_connection, invalidator (*this),
298                                            boost::bind (&MidiRegionView::instrument_settings_changed, this), gui_context());
299
300         trackview.editor().SnapChanged.connect(snap_changed_connection, invalidator(*this),
301                                                boost::bind (&MidiRegionView::snap_changed, this),
302                                                gui_context());
303
304         trackview.editor().MouseModeChanged.connect(_mouse_mode_connection, invalidator (*this),
305                                                     boost::bind (&MidiRegionView::mouse_mode_changed, this),
306                                                     gui_context ());
307
308         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
309         connect_to_diskstream ();
310
311         SelectionCleared.connect (_selection_cleared_connection, invalidator (*this), boost::bind (&MidiRegionView::selection_cleared, this, _1), gui_context ());
312
313         PublicEditor& editor (trackview.editor());
314         editor.get_selection().ClearMidiNoteSelection.connect (_clear_midi_selection_connection, invalidator (*this), boost::bind (&MidiRegionView::clear_midi_selection, this), gui_context ());
315 }
316
317 InstrumentInfo&
318 MidiRegionView::instrument_info () const
319 {
320         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
321         return route_ui->route()->instrument_info();
322 }
323
324 const boost::shared_ptr<ARDOUR::MidiRegion>
325 MidiRegionView::midi_region() const
326 {
327         return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region);
328 }
329
330 void
331 MidiRegionView::connect_to_diskstream ()
332 {
333         midi_view()->midi_track()->DataRecorded.connect(
334                 *this, invalidator(*this),
335                 boost::bind (&MidiRegionView::data_recorded, this, _1),
336                 gui_context());
337 }
338
339 bool
340 MidiRegionView::canvas_group_event(GdkEvent* ev)
341 {
342         if (in_destructor || _recregion) {
343                 return false;
344         }
345
346         if (!trackview.editor().internal_editing()) {
347                 // not in internal edit mode, so just act like a normal region
348                 return RegionView::canvas_group_event (ev);
349         }
350
351         bool r;
352
353         switch (ev->type) {
354         case GDK_ENTER_NOTIFY:
355                 _last_event_x = ev->crossing.x;
356                 _last_event_y = ev->crossing.y;
357                 enter_notify(&ev->crossing);
358                 // set entered_regionview (among other things)
359                 return RegionView::canvas_group_event (ev);
360
361         case GDK_LEAVE_NOTIFY:
362                 _last_event_x = ev->crossing.x;
363                 _last_event_y = ev->crossing.y;
364                 leave_notify(&ev->crossing);
365                 // reset entered_regionview (among other things)
366                 return RegionView::canvas_group_event (ev);
367
368         case GDK_SCROLL:
369                 if (scroll (&ev->scroll)) {
370                         return true;
371                 }
372                 break;
373
374         case GDK_KEY_PRESS:
375                 return key_press (&ev->key);
376
377         case GDK_KEY_RELEASE:
378                 return key_release (&ev->key);
379
380         case GDK_BUTTON_PRESS:
381                 return button_press (&ev->button);
382
383         case GDK_BUTTON_RELEASE:
384                 r = button_release (&ev->button);
385                 _note_player.reset();
386                 return r;
387
388         case GDK_MOTION_NOTIFY:
389                 _last_event_x = ev->motion.x;
390                 _last_event_y = ev->motion.y;
391                 return motion (&ev->motion);
392
393         default:
394                 break;
395         }
396
397         return RegionView::canvas_group_event (ev);
398 }
399
400 bool
401 MidiRegionView::enter_notify (GdkEventCrossing* ev)
402 {
403         enter_internal();
404
405         _entered = true;
406         return false;
407 }
408
409 bool
410 MidiRegionView::leave_notify (GdkEventCrossing*)
411 {
412         leave_internal();
413
414         _entered = false;
415         return false;
416 }
417
418 void
419 MidiRegionView::mouse_mode_changed ()
420 {
421         // Adjust frame colour (become more transparent for internal tools)
422         set_frame_color();
423
424         if (_entered) {
425                 if (trackview.editor().internal_editing()) {
426                         // Switched in to internal editing mode while entered
427                         enter_internal();
428                 } else {
429                         // Switched out of internal editing mode while entered
430                         leave_internal();
431                 }
432         }
433 }
434
435 void
436 MidiRegionView::enter_internal()
437 {
438         if (trackview.editor().current_mouse_mode() == MouseDraw && _mouse_state != AddDragging) {
439                 // Show ghost note under pencil
440                 create_ghost_note(_last_event_x, _last_event_y);
441         }
442
443         if (!_selection.empty()) {
444                 // Grab keyboard for moving selected notes with arrow keys
445                 Keyboard::magic_widget_grab_focus();
446                 _grabbed_keyboard = true;
447         }
448
449         // Lower frame handles below notes so they don't steal events
450         if (frame_handle_start) {
451                 frame_handle_start->lower_to_bottom();
452         }
453         if (frame_handle_end) {
454                 frame_handle_end->lower_to_bottom();
455         }
456 }
457
458 void
459 MidiRegionView::leave_internal()
460 {
461         trackview.editor().verbose_cursor()->hide ();
462         remove_ghost_note ();
463
464         if (_grabbed_keyboard) {
465                 Keyboard::magic_widget_drop_focus();
466                 _grabbed_keyboard = false;
467         }
468
469         // Raise frame handles above notes so they catch events
470         if (frame_handle_start) {
471                 frame_handle_start->raise_to_top();
472         }
473         if (frame_handle_end) {
474                 frame_handle_end->raise_to_top();
475         }
476 }
477
478 bool
479 MidiRegionView::button_press (GdkEventButton* ev)
480 {
481         if (ev->button != 1) {
482                 return false;
483         }
484
485         Editor* editor = dynamic_cast<Editor *> (&trackview.editor());
486         MouseMode m = editor->current_mouse_mode();
487
488         if (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
489                 _press_cursor_ctx = CursorContext::create(*editor, editor->cursors()->midi_pencil);
490         }
491
492         if (_mouse_state != SelectTouchDragging) {
493                 
494                 _pressed_button = ev->button;
495                 _mouse_state = Pressed;
496                 
497                 return true;
498         }
499
500         _pressed_button = ev->button;
501
502         return true;
503 }
504
505 bool
506 MidiRegionView::button_release (GdkEventButton* ev)
507 {
508         double event_x, event_y;
509
510         if (ev->button != 1) {
511                 return false;
512         }
513
514         event_x = ev->x;
515         event_y = ev->y;
516
517         group->canvas_to_item (event_x, event_y);
518         group->ungrab ();
519
520         PublicEditor& editor = trackview.editor ();
521
522         _press_cursor_ctx.reset();
523
524         switch (_mouse_state) {
525         case Pressed: // Clicked
526
527                 switch (editor.current_mouse_mode()) {
528                 case MouseRange:
529                         /* no motion occured - simple click */
530                         clear_selection ();
531                         break;
532
533                 case MouseContent:
534                 case MouseTimeFX:
535                         {
536                                 clear_selection();
537
538                                 if (Keyboard::is_insert_note_event(ev)) {
539
540                                         double event_x, event_y;
541
542                                         event_x = ev->x;
543                                         event_y = ev->y;
544                                         group->canvas_to_item (event_x, event_y);
545
546                                         Evoral::MusicalTime beats = get_grid_beats(editor.pixel_to_sample(event_x));
547
548                                         /* Shorten the length by 1 tick so that we can add a new note at the next
549                                            grid snap without it overlapping this one.
550                                         */
551                                         beats -= Evoral::MusicalTime::tick();
552
553                                         create_note_at (editor.pixel_to_sample (event_x), event_y, beats, true);
554                                 }
555
556                                 break;
557                         }
558                 case MouseDraw:
559                         {
560                                 Evoral::MusicalTime beats = get_grid_beats(editor.pixel_to_sample(event_x));
561
562                                 /* Shorten the length by 1 tick so that we can add a new note at the next
563                                    grid snap without it overlapping this one.
564                                 */
565                                 beats -= Evoral::MusicalTime::tick();
566                                 
567                                 create_note_at (editor.pixel_to_sample (event_x), event_y, beats, true);
568
569                                 break;
570                         }
571                 default:
572                         break;
573                 }
574
575                 _mouse_state = None;
576                 break;
577
578         case SelectRectDragging:
579         case AddDragging:
580                 editor.drags()->end_grab ((GdkEvent *) ev);
581                 _mouse_state = None;
582                 create_ghost_note (ev->x, ev->y);
583                 break;
584
585
586         default:
587                 break;
588         }
589
590         return false;
591 }
592
593 bool
594 MidiRegionView::motion (GdkEventMotion* ev)
595 {
596         PublicEditor& editor = trackview.editor ();
597
598         if (!_ghost_note && editor.current_mouse_mode() == MouseContent &&
599             Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()) &&
600             _mouse_state != AddDragging) {
601
602                 create_ghost_note (ev->x, ev->y);
603
604         } else if (_ghost_note && editor.current_mouse_mode() == MouseContent &&
605                    Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
606
607                 update_ghost_note (ev->x, ev->y);
608
609         } else if (_ghost_note && editor.current_mouse_mode() == MouseContent) {
610
611                 remove_ghost_note ();
612                 editor.verbose_cursor()->hide ();
613
614         } else if (_ghost_note && editor.current_mouse_mode() == MouseDraw) {
615
616                 update_ghost_note (ev->x, ev->y);
617         }
618
619         /* any motion immediately hides velocity text that may have been visible */
620
621         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
622                 (*i)->hide_velocity ();
623         }
624
625         switch (_mouse_state) {
626         case Pressed:
627
628                 if (_pressed_button == 1) {
629                         
630                         MouseMode m = editor.current_mouse_mode();
631                         
632                         if (m == MouseDraw || (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()))) {
633                                 editor.drags()->set (new NoteCreateDrag (dynamic_cast<Editor *> (&editor), group, this), (GdkEvent *) ev);
634                                 _mouse_state = AddDragging;
635                                 remove_ghost_note ();
636                                 editor.verbose_cursor()->hide ();
637                                 return true;
638                         } else if (m == MouseContent) {
639                                 editor.drags()->set (new MidiRubberbandSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
640                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
641                                         clear_selection ();
642                                 }
643                                 _mouse_state = SelectRectDragging;
644                                 return true;
645                         } else if (m == MouseRange) {
646                                 editor.drags()->set (new MidiVerticalSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
647                                 _mouse_state = SelectVerticalDragging;
648                                 return true;
649                         }
650                 }
651
652                 return false;
653
654         case SelectRectDragging:
655         case SelectVerticalDragging:
656         case AddDragging:
657                 editor.drags()->motion_handler ((GdkEvent *) ev, false);
658                 break;
659                 
660         case SelectTouchDragging:
661                 return false;
662
663         default:
664                 break;
665
666         }
667
668         /* we may be dragging some non-note object (eg. patch-change, sysex) 
669          */
670
671         return editor.drags()->motion_handler ((GdkEvent *) ev, false);
672 }
673
674
675 bool
676 MidiRegionView::scroll (GdkEventScroll* ev)
677 {
678         if (_selection.empty()) {
679                 return false;
680         }
681
682         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
683                 /* XXX: bit of a hack; allow PrimaryModifier scroll through so that
684                    it still works for zoom.
685                 */
686                 return false;
687         }
688
689         trackview.editor().verbose_cursor()->hide ();
690
691         bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
692         bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
693
694         if (ev->direction == GDK_SCROLL_UP) {
695                 change_velocities (true, fine, false, together);
696         } else if (ev->direction == GDK_SCROLL_DOWN) {
697                 change_velocities (false, fine, false, together);
698         } else {
699                 /* left, right: we don't use them */
700                 return false;
701         }
702
703         return true;
704 }
705
706 bool
707 MidiRegionView::key_press (GdkEventKey* ev)
708 {
709         /* since GTK bindings are generally activated on press, and since
710            detectable auto-repeat is the name of the game and only sends
711            repeated presses, carry out key actions at key press, not release.
712         */
713
714         bool unmodified = Keyboard::no_modifier_keys_pressed (ev);
715         
716         if (unmodified && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
717                 _mouse_state = SelectTouchDragging;
718                 return true;
719
720         } else if (ev->keyval == GDK_Escape && unmodified) {
721                 clear_selection();
722                 _mouse_state = None;
723
724         } else if (unmodified && (ev->keyval == GDK_comma || ev->keyval == GDK_period)) {
725
726                 bool start = (ev->keyval == GDK_comma);
727                 bool end = (ev->keyval == GDK_period);
728                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
729                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
730
731                 change_note_lengths (fine, shorter, Evoral::MusicalTime(), start, end);
732
733                 return true;
734
735         } else if ((ev->keyval == GDK_BackSpace || ev->keyval == GDK_Delete) && unmodified) {
736
737                 if (_selection.empty()) {
738                         return false;
739                 }
740
741                 delete_selection();
742                 return true;
743
744         } else if (ev->keyval == GDK_Tab) {
745
746                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
747                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
748                 } else {
749                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
750                 }
751                 return true;
752
753         } else if (ev->keyval == GDK_ISO_Left_Tab) {
754
755                 /* Shift-TAB generates ISO Left Tab, for some reason */
756
757                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
758                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
759                 } else {
760                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
761                 }
762                 return true;
763
764
765
766         } else if (ev->keyval == GDK_Up) {
767
768                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
769                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
770                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
771
772                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
773                         change_velocities (true, fine, allow_smush, together);
774                 } else {
775                         transpose (true, fine, allow_smush);
776                 }
777                 return true;
778
779         } else if (ev->keyval == GDK_Down) {
780
781                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
782                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
783                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
784
785                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
786                         change_velocities (false, fine, allow_smush, together);
787                 } else {
788                         transpose (false, fine, allow_smush);
789                 }
790                 return true;
791
792         } else if (ev->keyval == GDK_Left) {
793
794                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
795                 nudge_notes (false, fine);
796                 return true;
797
798         } else if (ev->keyval == GDK_Right) {
799
800                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
801                 nudge_notes (true, fine);
802                 return true;
803
804         } else if (ev->keyval == GDK_c && unmodified) {
805                 channel_edit ();
806                 return true;
807
808         } else if (ev->keyval == GDK_v && unmodified) {
809                 velocity_edit ();
810                 return true;
811         }
812
813         return false;
814 }
815
816 bool
817 MidiRegionView::key_release (GdkEventKey* ev)
818 {
819         if ((_mouse_state == SelectTouchDragging) && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
820                 _mouse_state = None;
821                 return true;
822         }
823         return false;
824 }
825
826 void
827 MidiRegionView::channel_edit ()
828 {
829         if (_selection.empty()) {
830                 return;
831         }
832
833         /* pick a note somewhat at random (since Selection is a set<>) to
834          * provide the "current" channel for the dialog.
835          */
836
837         uint8_t current_channel = (*_selection.begin())->note()->channel ();
838         MidiChannelDialog channel_dialog (current_channel);
839         int ret = channel_dialog.run ();
840
841         switch (ret) {
842         case Gtk::RESPONSE_OK:
843                 break;
844         default:
845                 return;
846         }
847
848         uint8_t new_channel = channel_dialog.active_channel ();
849
850         start_note_diff_command (_("channel edit"));
851
852         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
853                 Selection::iterator next = i;
854                 ++next;
855                 change_note_channel (*i, new_channel);
856                 i = next;
857         }
858
859         apply_diff ();
860 }
861
862 void
863 MidiRegionView::velocity_edit ()
864 {
865         if (_selection.empty()) {
866                 return;
867         }
868         
869         /* pick a note somewhat at random (since Selection is a set<>) to
870          * provide the "current" velocity for the dialog.
871          */
872
873         uint8_t current_velocity = (*_selection.begin())->note()->velocity ();
874         MidiVelocityDialog velocity_dialog (current_velocity);
875         int ret = velocity_dialog.run ();
876
877         switch (ret) {
878         case Gtk::RESPONSE_OK:
879                 break;
880         default:
881                 return;
882         }
883
884         uint8_t new_velocity = velocity_dialog.velocity ();
885
886         start_note_diff_command (_("velocity edit"));
887
888         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
889                 Selection::iterator next = i;
890                 ++next;
891                 change_note_velocity (*i, new_velocity, false);
892                 i = next;
893         }
894
895         apply_diff ();
896 }
897
898 void
899 MidiRegionView::show_list_editor ()
900 {
901         if (!_list_editor) {
902                 _list_editor = new MidiListEditor (trackview.session(), midi_region(), midi_view()->midi_track());
903         }
904         _list_editor->present ();
905 }
906
907 /** Add a note to the model, and the view, at a canvas (click) coordinate.
908  * \param t time in frames relative to the position of the region
909  * \param y vertical position in pixels
910  * \param length duration of the note in beats
911  * \param snap_t true to snap t to the grid, otherwise false.
912  */
913 void
914 MidiRegionView::create_note_at (framepos_t t, double y, Evoral::MusicalTime length, bool snap_t)
915 {
916         if (length < 2 * DBL_EPSILON) {
917                 return;
918         }
919
920         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
921         MidiStreamView* const view = mtv->midi_view();
922
923         const double note = view->y_to_note(y);
924
925         // Start of note in frames relative to region start
926         if (snap_t) {
927                 framecnt_t grid_frames;
928                 t = snap_frame_to_grid_underneath (t, grid_frames);
929         }
930
931         const boost::shared_ptr<NoteType> new_note (
932                 new NoteType (mtv->get_channel_for_add (),
933                               region_frames_to_region_beats(t + _region->start()), 
934                               length,
935                               (uint8_t)note, 0x40));
936
937         if (_model->contains (new_note)) {
938                 return;
939         }
940
941         view->update_note_range(new_note->note());
942
943         MidiModel::NoteDiffCommand* cmd = _model->new_note_diff_command(_("add note"));
944         cmd->add (new_note);
945         _model->apply_command(*trackview.session(), cmd);
946
947         play_midi_note (new_note);
948 }
949
950 void
951 MidiRegionView::clear_events (bool with_selection_signal)
952 {
953         clear_selection (with_selection_signal);
954
955         MidiGhostRegion* gr;
956         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
957                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
958                         gr->clear_events();
959                 }
960         }
961
962         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
963                 delete *i;
964         }
965
966         _events.clear();
967         _patch_changes.clear();
968         _sys_exes.clear();
969         _optimization_iterator = _events.end();
970 }
971
972 void
973 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
974 {
975         _model = model;
976
977         content_connection.disconnect ();
978         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
979
980         clear_events ();
981
982         if (_enable_display) {
983                 redisplay_model();
984         }
985 }
986
987 void
988 MidiRegionView::start_note_diff_command (string name)
989 {
990         if (!_note_diff_command) {
991                 _note_diff_command = _model->new_note_diff_command (name);
992         }
993 }
994
995 void
996 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
997 {
998         if (_note_diff_command) {
999                 _note_diff_command->add (note);
1000         }
1001         if (selected) {
1002                 _marked_for_selection.insert(note);
1003         }
1004         if (show_velocity) {
1005                 _marked_for_velocity.insert(note);
1006         }
1007 }
1008
1009 void
1010 MidiRegionView::note_diff_remove_note (NoteBase* ev)
1011 {
1012         if (_note_diff_command && ev->note()) {
1013                 _note_diff_command->remove(ev->note());
1014         }
1015 }
1016
1017 void
1018 MidiRegionView::note_diff_add_change (NoteBase* ev,
1019                                       MidiModel::NoteDiffCommand::Property property,
1020                                       uint8_t val)
1021 {
1022         if (_note_diff_command) {
1023                 _note_diff_command->change (ev->note(), property, val);
1024         }
1025 }
1026
1027 void
1028 MidiRegionView::note_diff_add_change (NoteBase* ev,
1029                                       MidiModel::NoteDiffCommand::Property property,
1030                                       Evoral::MusicalTime val)
1031 {
1032         if (_note_diff_command) {
1033                 _note_diff_command->change (ev->note(), property, val);
1034         }
1035 }
1036
1037 void
1038 MidiRegionView::apply_diff (bool as_subcommand)
1039 {
1040         bool add_or_remove;
1041
1042         if (!_note_diff_command) {
1043                 return;
1044         }
1045
1046         if ((add_or_remove = _note_diff_command->adds_or_removes())) {
1047                 // Mark all selected notes for selection when model reloads
1048                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1049                         _marked_for_selection.insert((*i)->note());
1050                 }
1051         }
1052
1053         if (as_subcommand) {
1054                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
1055         } else {
1056                 _model->apply_command (*trackview.session(), _note_diff_command);
1057         }
1058
1059         _note_diff_command = 0;
1060         midi_view()->midi_track()->playlist_modified();
1061
1062         if (add_or_remove) {
1063                 _marked_for_selection.clear();
1064         }
1065
1066         _marked_for_velocity.clear();
1067 }
1068
1069 void
1070 MidiRegionView::abort_command()
1071 {
1072         delete _note_diff_command;
1073         _note_diff_command = 0;
1074         clear_selection();
1075 }
1076
1077 NoteBase*
1078 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
1079 {
1080         if (_optimization_iterator != _events.end()) {
1081                 ++_optimization_iterator;
1082         }
1083
1084         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
1085                 return *_optimization_iterator;
1086         }
1087
1088         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
1089                 if ((*_optimization_iterator)->note() == note) {
1090                         return *_optimization_iterator;
1091                 }
1092         }
1093
1094         return 0;
1095 }
1096
1097 void
1098 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
1099 {
1100         MidiModel::Notes notes;
1101         _model->get_notes (notes, op, val, chan_mask);
1102
1103         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1104                 NoteBase* cne = find_canvas_note (*n);
1105                 if (cne) {
1106                         e.push_back (cne);
1107                 }
1108         }
1109 }
1110
1111 void
1112 MidiRegionView::redisplay_model()
1113 {
1114         // Don't redisplay the model if we're currently recording and displaying that
1115         if (_active_notes) {
1116                 return;
1117         }
1118
1119         if (!_model) {
1120                 return;
1121         }
1122
1123         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1124                 (*i)->invalidate ();
1125         }
1126
1127         MidiModel::ReadLock lock(_model->read_lock());
1128
1129         MidiModel::Notes& notes (_model->notes());
1130         _optimization_iterator = _events.begin();
1131
1132         bool empty_when_starting = _events.empty();
1133
1134         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1135
1136                 boost::shared_ptr<NoteType> note (*n);
1137                 NoteBase* cne;
1138                 bool visible;
1139
1140                 if (note_in_region_range (note, visible)) {
1141                         
1142                         if (!empty_when_starting && (cne = find_canvas_note (note)) != 0) {
1143
1144                                 cne->validate ();
1145
1146                                 Note* cn;
1147                                 Hit* ch;
1148
1149                                 if ((cn = dynamic_cast<Note*>(cne)) != 0) {
1150                                         update_note (cn);
1151                                 } else if ((ch = dynamic_cast<Hit*>(cne)) != 0) {
1152                                         update_hit (ch);
1153                                 }
1154
1155                                 if (visible) {
1156                                         cne->show ();
1157                                 } else {
1158                                         cne->hide ();
1159                                 }
1160
1161                         } else {
1162
1163                                 add_note (note, visible);
1164                         }
1165
1166                 } else {
1167                         
1168                         if (!empty_when_starting && (cne = find_canvas_note (note)) != 0) {
1169                                 cne->validate ();
1170                                 cne->hide ();
1171                         }
1172                 }
1173         }
1174
1175
1176         /* remove note items that are no longer valid */
1177
1178         if (!empty_when_starting) {
1179                 for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1180                         if (!(*i)->valid ()) {
1181                                 
1182                                 for (vector<GhostRegion*>::iterator j = ghosts.begin(); j != ghosts.end(); ++j) {
1183                                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*j);
1184                                         if (gr) {
1185                                                 gr->remove_note (*i);
1186                                         }
1187                                 }
1188                                 
1189                                 delete *i;
1190                                 i = _events.erase (i);
1191                                 
1192                         } else {
1193                                 ++i;
1194                         }
1195                 }
1196         }
1197
1198         _patch_changes.clear();
1199         _sys_exes.clear();
1200
1201         display_sysexes();
1202         display_patch_changes ();
1203
1204         _marked_for_selection.clear ();
1205         _marked_for_velocity.clear ();
1206
1207         /* we may have caused _events to contain things out of order (e.g. if a note
1208            moved earlier or later). we don't generally need them in time order, but
1209            make a note that a sort is required for those cases that require it.
1210         */
1211
1212         _sort_needed = true;
1213 }
1214
1215 void
1216 MidiRegionView::display_patch_changes ()
1217 {
1218         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1219         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
1220
1221         for (uint8_t i = 0; i < 16; ++i) {
1222                 display_patch_changes_on_channel (i, chn_mask & (1 << i));
1223         }
1224 }
1225
1226 /** @param active_channel true to display patch changes fully, false to display
1227  * them `greyed-out' (as on an inactive channel)
1228  */
1229 void
1230 MidiRegionView::display_patch_changes_on_channel (uint8_t channel, bool active_channel)
1231 {
1232         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1233
1234                 if ((*i)->channel() != channel) {
1235                         continue;
1236                 }
1237
1238                 const string patch_name = instrument_info().get_patch_name ((*i)->bank(), (*i)->program(), channel);
1239                 add_canvas_patch_change (*i, patch_name, active_channel);
1240         }
1241 }
1242
1243 void
1244 MidiRegionView::display_sysexes()
1245 {
1246         bool have_periodic_system_messages = false;
1247         bool display_periodic_messages = true;
1248
1249         if (!ARDOUR_UI::config()->get_never_display_periodic_midi()) {
1250
1251                 for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1252                         const boost::shared_ptr<const Evoral::MIDIEvent<Evoral::MusicalTime> > mev = 
1253                                 boost::static_pointer_cast<const Evoral::MIDIEvent<Evoral::MusicalTime> > (*i);
1254                         
1255                         if (mev) {
1256                                 if (mev->is_spp() || mev->is_mtc_quarter() || mev->is_mtc_full()) {
1257                                         have_periodic_system_messages = true;
1258                                         break;
1259                                 }
1260                         }
1261                 }
1262                 
1263                 if (have_periodic_system_messages) {
1264                         double zoom = trackview.editor().get_current_zoom (); // frames per pixel
1265                         
1266                         /* get an approximate value for the number of samples per video frame */
1267                         
1268                         double video_frame = trackview.session()->frame_rate() * (1.0/30);
1269                         
1270                         /* if we are zoomed out beyond than the cutoff (i.e. more
1271                          * frames per pixel than frames per 4 video frames), don't
1272                          * show periodic sysex messages.
1273                          */
1274                         
1275                         if (zoom > (video_frame*4)) {
1276                                 display_periodic_messages = false;
1277                         } 
1278                 }
1279         } else {
1280                 display_periodic_messages = false;
1281         }
1282
1283         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1284
1285                 const boost::shared_ptr<const Evoral::MIDIEvent<Evoral::MusicalTime> > mev = 
1286                         boost::static_pointer_cast<const Evoral::MIDIEvent<Evoral::MusicalTime> > (*i);
1287
1288                 Evoral::MusicalTime time = (*i)->time();
1289
1290                 if (mev) {
1291                         if (mev->is_spp() || mev->is_mtc_quarter() || mev->is_mtc_full()) {
1292                                 if (!display_periodic_messages) {
1293                                         continue;
1294                                 }
1295                         }
1296                 }
1297
1298                 ostringstream str;
1299                 str << hex;
1300                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1301                         str << int((*i)->buffer()[b]);
1302                         if (b != (*i)->size() -1) {
1303                                 str << " ";
1304                         }
1305                 }
1306                 string text = str.str();
1307
1308                 const double x = trackview.editor().sample_to_pixel(source_beats_to_region_frames(time));
1309
1310                 double height = midi_stream_view()->contents_height();
1311
1312                 // CAIROCANVAS: no longer passing *i (the sysex event) to the
1313                 // SysEx canvas object!!!
1314
1315                 boost::shared_ptr<SysEx> sysex = boost::shared_ptr<SysEx>(
1316                         new SysEx (*this, _note_group, text, height, x, 1.0));
1317
1318                 // Show unless message is beyond the region bounds
1319                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1320                         sysex->hide();
1321                 } else {
1322                         sysex->show();
1323                 }
1324
1325                 _sys_exes.push_back(sysex);
1326         }
1327 }
1328
1329 MidiRegionView::~MidiRegionView ()
1330 {
1331         in_destructor = true;
1332
1333         trackview.editor().verbose_cursor()->hide ();
1334
1335         note_delete_connection.disconnect ();
1336
1337         delete _list_editor;
1338
1339         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1340
1341         if (_active_notes) {
1342                 end_write();
1343         }
1344
1345         _selection_cleared_connection.disconnect ();
1346
1347         _selection.clear();
1348         clear_events (false);
1349
1350         delete _note_group;
1351         delete _note_diff_command;
1352         delete _step_edit_cursor;
1353         delete _temporary_note_group;
1354 }
1355
1356 void
1357 MidiRegionView::region_resized (const PropertyChange& what_changed)
1358 {
1359         RegionView::region_resized(what_changed);
1360
1361         if (what_changed.contains (ARDOUR::Properties::position)) {
1362                 _region_relative_time_converter.set_origin_b(_region->position());
1363                 set_duration(_region->length(), 0);
1364                 if (_enable_display) {
1365                         redisplay_model();
1366                 }
1367         }
1368
1369         if (what_changed.contains (ARDOUR::Properties::start) ||
1370             what_changed.contains (ARDOUR::Properties::position)) {
1371                 _source_relative_time_converter.set_origin_b (_region->position() - _region->start());
1372         }
1373 }
1374
1375 void
1376 MidiRegionView::reset_width_dependent_items (double pixel_width)
1377 {
1378         RegionView::reset_width_dependent_items(pixel_width);
1379
1380         if (_enable_display) {
1381                 redisplay_model();
1382         }
1383
1384         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1385                 if ((*x)->canvas_item()->width() >= _pixel_width) {
1386                         (*x)->hide();
1387                 } else {
1388                         (*x)->show();
1389                 }
1390         }
1391
1392         move_step_edit_cursor (_step_edit_cursor_position);
1393         set_step_edit_cursor_width (_step_edit_cursor_width);
1394 }
1395
1396 void
1397 MidiRegionView::set_height (double height)
1398 {
1399         double old_height = _height;
1400         RegionView::set_height(height);
1401
1402         apply_note_range (midi_stream_view()->lowest_note(),
1403                           midi_stream_view()->highest_note(),
1404                           height != old_height);
1405
1406         if (name_text) {
1407                 name_text->raise_to_top();
1408         }
1409
1410         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1411                 (*x)->set_height (midi_stream_view()->contents_height());
1412         }
1413
1414         if (_step_edit_cursor) {
1415                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
1416         }
1417 }
1418
1419
1420 /** Apply the current note range from the stream view
1421  * by repositioning/hiding notes as necessary
1422  */
1423 void
1424 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1425 {
1426         if (!_enable_display) {
1427                 return;
1428         }
1429
1430         if (!force && _current_range_min == min && _current_range_max == max) {
1431                 return;
1432         }
1433
1434         _current_range_min = min;
1435         _current_range_max = max;
1436
1437         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1438                 NoteBase* event = *i;
1439                 boost::shared_ptr<NoteType> note (event->note());
1440
1441                 if (note->note() < _current_range_min ||
1442                     note->note() > _current_range_max) {
1443                         event->hide();
1444                 } else {
1445                         event->show();
1446                 }
1447
1448                 if (Note* cnote = dynamic_cast<Note*>(event)) {
1449
1450                         const double y0 = 1. + floor (midi_stream_view()->note_to_y(note->note()));
1451                         const double y1 = y0 + std::max(1., floor(midi_stream_view()->note_height()) - 1.);
1452
1453                         cnote->set_y0 (y0);
1454                         cnote->set_y1 (y1);
1455
1456                 } else if (Hit* chit = dynamic_cast<Hit*>(event)) {
1457                         update_hit (chit);
1458                 }
1459         }
1460 }
1461
1462 GhostRegion*
1463 MidiRegionView::add_ghost (TimeAxisView& tv)
1464 {
1465         Note* note;
1466
1467         double unit_position = _region->position () / samples_per_pixel;
1468         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1469         MidiGhostRegion* ghost;
1470
1471         if (mtv && mtv->midi_view()) {
1472                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1473                    to allow having midi notes on top of note lines and waveforms.
1474                 */
1475                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1476         } else {
1477                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1478         }
1479
1480         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1481                 if ((note = dynamic_cast<Note*>(*i)) != 0) {
1482                         ghost->add_note(note);
1483                 }
1484         }
1485
1486         ghost->set_height ();
1487         ghost->set_duration (_region->length() / samples_per_pixel);
1488         ghosts.push_back (ghost);
1489
1490         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context());
1491
1492         return ghost;
1493 }
1494
1495
1496 /** Begin tracking note state for successive calls to add_event
1497  */
1498 void
1499 MidiRegionView::begin_write()
1500 {
1501         if (_active_notes) {
1502                 delete[] _active_notes;
1503         }
1504         _active_notes = new Note*[128];
1505         for (unsigned i = 0; i < 128; ++i) {
1506                 _active_notes[i] = 0;
1507         }
1508 }
1509
1510
1511 /** Destroy note state for add_event
1512  */
1513 void
1514 MidiRegionView::end_write()
1515 {
1516         delete[] _active_notes;
1517         _active_notes = 0;
1518         _marked_for_selection.clear();
1519         _marked_for_velocity.clear();
1520 }
1521
1522
1523 /** Resolve an active MIDI note (while recording).
1524  */
1525 void
1526 MidiRegionView::resolve_note(uint8_t note, Evoral::MusicalTime end_time)
1527 {
1528         if (midi_view()->note_mode() != Sustained) {
1529                 return;
1530         }
1531
1532         if (_active_notes && _active_notes[note]) {
1533
1534                 /* XXX is end_time really region-centric? I think so, because
1535                    this is a new region that we're recording, so source zero is
1536                    the same as region zero
1537                 */
1538                 const framepos_t end_time_frames = region_beats_to_region_frames(end_time);
1539
1540                 _active_notes[note]->set_x1 (trackview.editor().sample_to_pixel(end_time_frames));
1541                 _active_notes[note]->set_outline_all ();
1542                 _active_notes[note] = 0;
1543
1544         }
1545 }
1546
1547
1548 /** Extend active notes to rightmost edge of region (if length is changed)
1549  */
1550 void
1551 MidiRegionView::extend_active_notes()
1552 {
1553         if (!_active_notes) {
1554                 return;
1555         }
1556
1557         for (unsigned i=0; i < 128; ++i) {
1558                 if (_active_notes[i]) {
1559                         _active_notes[i]->set_x1(
1560                                 trackview.editor().sample_to_pixel(_region->position() + _region->length()));
1561                 }
1562         }
1563 }
1564
1565
1566 void
1567 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1568 {
1569         if (_no_sound_notes || !ARDOUR_UI::config()->get_sound_midi_notes()) {
1570                 return;
1571         }
1572
1573         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1574
1575         if (!route_ui || !route_ui->midi_track()) {
1576                 return;
1577         }
1578
1579         NotePlayer* np = new NotePlayer (route_ui->midi_track ());
1580         np->add (note);
1581         np->play ();
1582
1583         /* NotePlayer deletes itself */
1584 }
1585
1586 void
1587 MidiRegionView::start_playing_midi_note(boost::shared_ptr<NoteType> note)
1588 {
1589         const std::vector< boost::shared_ptr<NoteType> > notes(1, note);
1590         start_playing_midi_chord(notes);
1591 }
1592
1593 void
1594 MidiRegionView::start_playing_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1595 {
1596         if (_no_sound_notes || !ARDOUR_UI::config()->get_sound_midi_notes()) {
1597                 return;
1598         }
1599
1600         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1601
1602         if (!route_ui || !route_ui->midi_track()) {
1603                 return;
1604         }
1605
1606         _note_player = boost::shared_ptr<NotePlayer>(new NotePlayer(route_ui->midi_track()));
1607
1608         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1609                 _note_player->add (*n);
1610         }
1611
1612         _note_player->on ();
1613 }
1614
1615
1616 bool
1617 MidiRegionView::note_in_region_range (const boost::shared_ptr<NoteType> note, bool& visible) const
1618 {
1619         const framepos_t note_start_frames = source_beats_to_region_frames (note->time());
1620         bool outside = (note_start_frames  < 0) || (note_start_frames > _region->last_frame());
1621
1622         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1623                 (note->note() <= midi_stream_view()->highest_note());
1624
1625         return !outside;
1626 }
1627
1628 /** Update a canvas note's size from its model note.
1629  *  @param ev Canvas note to update.
1630  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1631  */
1632 void
1633 MidiRegionView::update_note (Note* ev, bool update_ghost_regions)
1634 {
1635         boost::shared_ptr<NoteType> note = ev->note();
1636         const double x = trackview.editor().sample_to_pixel (source_beats_to_region_frames (note->time()));
1637         const double y0 = 1 + floor(midi_stream_view()->note_to_y(note->note()));
1638
1639         ev->set_x0 (x);
1640         ev->set_y0 (y0);
1641
1642         /* trim note display to not overlap the end of its region */
1643
1644         if (note->length() > 0) {
1645                 const framepos_t note_end_frames = min (source_beats_to_region_frames (note->end_time()), _region->length());
1646                 ev->set_x1 (trackview.editor().sample_to_pixel (note_end_frames));
1647         } else {
1648                 ev->set_x1 (trackview.editor().sample_to_pixel (_region->length()));
1649         }
1650
1651         ev->set_y1 (y0 + std::max(1., floor(midi_stream_view()->note_height()) - 1));
1652
1653         if (!note->length()) {
1654                 if (_active_notes && note->note() < 128) {
1655                         // If this note is already active there's a stuck note,
1656                         // finish the old note rectangle
1657                         if (_active_notes[note->note()]) {
1658                                 Note* const old_rect = _active_notes[note->note()];
1659                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1660                                 old_rect->set_x1 (x);
1661                                 old_rect->set_outline_all ();
1662                         }
1663                         _active_notes[note->note()] = ev;
1664                 }
1665                 /* outline all but right edge */
1666                 ev->set_outline_what (ArdourCanvas::Rectangle::What (
1667                                               ArdourCanvas::Rectangle::TOP|
1668                                               ArdourCanvas::Rectangle::LEFT|
1669                                               ArdourCanvas::Rectangle::BOTTOM));
1670         } else {
1671                 /* outline all edges */
1672                 ev->set_outline_all ();
1673         }
1674
1675         // Update color in case velocity has changed
1676         ev->set_fill_color(ev->base_color());
1677         ev->set_outline_color(ev->calculate_outline(ev->base_color(), ev->selected()));
1678
1679         if (update_ghost_regions) {
1680                 for (std::vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1681                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*i);
1682                         if (gr) {
1683                                 gr->update_note (ev);
1684                         }
1685                 }
1686         }
1687 }
1688
1689 void
1690 MidiRegionView::update_hit (Hit* ev)
1691 {
1692         boost::shared_ptr<NoteType> note = ev->note();
1693
1694         const framepos_t note_start_frames = source_beats_to_region_frames(note->time());
1695         const double x = trackview.editor().sample_to_pixel(note_start_frames);
1696         const double diamond_size = std::max(1., floor(midi_stream_view()->note_height()) - 2.);
1697         const double y = 1.5 + floor(midi_stream_view()->note_to_y(note->note())) + diamond_size * .5;
1698
1699         ev->set_position (ArdourCanvas::Duple (x, y));
1700         ev->set_height (diamond_size);
1701 }
1702
1703 /** Add a MIDI note to the view (with length).
1704  *
1705  * If in sustained mode, notes with length 0 will be considered active
1706  * notes, and resolve_note should be called when the corresponding note off
1707  * event arrives, to properly display the note.
1708  */
1709 void
1710 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1711 {
1712         NoteBase* event = 0;
1713
1714         if (midi_view()->note_mode() == Sustained) {
1715
1716                 Note* ev_rect = new Note (*this, _note_group, note);
1717
1718                 update_note (ev_rect);
1719
1720                 event = ev_rect;
1721
1722                 MidiGhostRegion* gr;
1723
1724                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1725                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1726                                 gr->add_note(ev_rect);
1727                         }
1728                 }
1729
1730         } else if (midi_view()->note_mode() == Percussive) {
1731
1732                 const double diamond_size = std::max(1., floor(midi_stream_view()->note_height()) - 2.);
1733
1734                 Hit* ev_diamond = new Hit (*this, _note_group, diamond_size, note);
1735
1736                 update_hit (ev_diamond);
1737
1738                 event = ev_diamond;
1739
1740         } else {
1741                 event = 0;
1742         }
1743
1744         if (event) {
1745                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1746                         note_selected(event, true);
1747                 }
1748
1749                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1750                         event->show_velocity();
1751                 }
1752
1753                 event->on_channel_selection_change (get_selected_channels());
1754                 _events.push_back(event);
1755
1756                 if (visible) {
1757                         event->show();
1758                 } else {
1759                         event->hide ();
1760                 }
1761         }
1762
1763         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1764         MidiStreamView* const view = mtv->midi_view();
1765
1766         view->update_note_range (note->note());
1767 }
1768
1769 void
1770 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1771                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1772 {
1773         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1774
1775         /* potentially extend region to hold new note */
1776
1777         framepos_t end_frame = source_beats_to_absolute_frames (new_note->end_time());
1778         framepos_t region_end = _region->last_frame();
1779
1780         if (end_frame > region_end) {
1781                 _region->set_length (end_frame - _region->position());
1782         }
1783
1784         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1785         MidiStreamView* const view = mtv->midi_view();
1786
1787         view->update_note_range(new_note->note());
1788
1789         _marked_for_selection.clear ();
1790         clear_selection ();
1791
1792         start_note_diff_command (_("step add"));
1793         note_diff_add_note (new_note, true, false);
1794         apply_diff();
1795
1796         // last_step_edit_note = new_note;
1797 }
1798
1799 void
1800 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1801 {
1802         change_note_lengths (false, false, beats, false, true);
1803 }
1804
1805 /** Add a new patch change flag to the canvas.
1806  * @param patch the patch change to add
1807  * @param the text to display in the flag
1808  * @param active_channel true to display the flag as on an active channel, false to grey it out for an inactive channel.
1809  */
1810 void
1811 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext, bool /*active_channel*/)
1812 {
1813         framecnt_t region_frames = source_beats_to_region_frames (patch->time());
1814         const double x = trackview.editor().sample_to_pixel (region_frames);
1815
1816         double const height = midi_stream_view()->contents_height();
1817
1818         // CAIROCANVAS: active_channel info removed from PatcChange constructor
1819         // so we need to do something more sophisticated to keep its color
1820         // appearance (MidiPatchChangeFill/MidiPatchChangeInactiveChannelFill)
1821         // up to date.
1822
1823         boost::shared_ptr<PatchChange> patch_change = boost::shared_ptr<PatchChange>(
1824                 new PatchChange(*this, group,
1825                                 displaytext,
1826                                 height,
1827                                 x, 1.0,
1828                                 instrument_info(),
1829                                 patch));
1830
1831         if (patch_change->item().width() < _pixel_width) {
1832                 // Show unless patch change is beyond the region bounds
1833                 if (region_frames < 0 || region_frames >= _region->length()) {
1834                         patch_change->hide();
1835                 } else {
1836                         patch_change->show();
1837                 }
1838         } else {
1839                 patch_change->hide ();
1840         }
1841
1842         _patch_changes.push_back (patch_change);
1843 }
1844
1845 MIDI::Name::PatchPrimaryKey
1846 MidiRegionView::patch_change_to_patch_key (MidiModel::PatchChangePtr p)
1847 {
1848         return MIDI::Name::PatchPrimaryKey (p->program(), p->bank());
1849 }
1850
1851 /// Return true iff @p pc applies to the given time on the given channel.
1852 static bool
1853 patch_applies (const ARDOUR::MidiModel::constPatchChangePtr pc, Evoral::MusicalTime time, uint8_t channel)
1854 {
1855         return pc->time() <= time && pc->channel() == channel;
1856 }
1857         
1858 void 
1859 MidiRegionView::get_patch_key_at (Evoral::MusicalTime time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key) const
1860 {
1861         // The earliest event not before time
1862         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
1863
1864         // Go backwards until we find the latest PC for this channel, or the start
1865         while (i != _model->patch_changes().begin() &&
1866                (i == _model->patch_changes().end() ||
1867                 !patch_applies(*i, time, channel))) {
1868                 --i;
1869         }
1870
1871         if (i != _model->patch_changes().end() && patch_applies(*i, time, channel)) {
1872                 key.set_bank((*i)->bank());
1873                 key.set_program((*i)->program ());
1874         } else {
1875                 key.set_bank(0);
1876                 key.set_program(0);
1877         }
1878 }
1879
1880 void
1881 MidiRegionView::change_patch_change (PatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
1882 {
1883         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1884
1885         if (pc.patch()->program() != new_patch.program()) {
1886                 c->change_program (pc.patch (), new_patch.program());
1887         }
1888
1889         int const new_bank = new_patch.bank();
1890         if (pc.patch()->bank() != new_bank) {
1891                 c->change_bank (pc.patch (), new_bank);
1892         }
1893
1894         _model->apply_command (*trackview.session(), c);
1895
1896         _patch_changes.clear ();
1897         display_patch_changes ();
1898 }
1899
1900 void
1901 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::MusicalTime> & new_change)
1902 {
1903         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1904
1905         if (old_change->time() != new_change.time()) {
1906                 c->change_time (old_change, new_change.time());
1907         }
1908
1909         if (old_change->channel() != new_change.channel()) {
1910                 c->change_channel (old_change, new_change.channel());
1911         }
1912
1913         if (old_change->program() != new_change.program()) {
1914                 c->change_program (old_change, new_change.program());
1915         }
1916
1917         if (old_change->bank() != new_change.bank()) {
1918                 c->change_bank (old_change, new_change.bank());
1919         }
1920
1921         _model->apply_command (*trackview.session(), c);
1922
1923         _patch_changes.clear ();
1924         display_patch_changes ();
1925 }
1926
1927 /** Add a patch change to the region.
1928  *  @param t Time in frames relative to region position
1929  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
1930  *  MidiTimeAxisView::get_channel_for_add())
1931  */
1932 void
1933 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::MusicalTime> const & patch)
1934 {
1935         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1936
1937         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("add patch change"));
1938         c->add (MidiModel::PatchChangePtr (
1939                         new Evoral::PatchChange<Evoral::MusicalTime> (
1940                                 absolute_frames_to_source_beats (_region->position() + t),
1941                                 mtv->get_channel_for_add(), patch.program(), patch.bank()
1942                                 )
1943                         )
1944                 );
1945
1946         _model->apply_command (*trackview.session(), c);
1947
1948         _patch_changes.clear ();
1949         display_patch_changes ();
1950 }
1951
1952 void
1953 MidiRegionView::move_patch_change (PatchChange& pc, Evoral::MusicalTime t)
1954 {
1955         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
1956         c->change_time (pc.patch (), t);
1957         _model->apply_command (*trackview.session(), c);
1958
1959         _patch_changes.clear ();
1960         display_patch_changes ();
1961 }
1962
1963 void
1964 MidiRegionView::delete_patch_change (PatchChange* pc)
1965 {
1966         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
1967         c->remove (pc->patch ());
1968         _model->apply_command (*trackview.session(), c);
1969
1970         _patch_changes.clear ();
1971         display_patch_changes ();
1972 }
1973
1974 void
1975 MidiRegionView::step_patch (PatchChange& patch, bool bank, int delta)
1976 {
1977         MIDI::Name::PatchPrimaryKey key = patch_change_to_patch_key(patch.patch());
1978         if (bank) {
1979                 key.set_bank(key.bank() + delta);
1980         } else {
1981                 key.set_program(key.program() + delta);
1982         }
1983         change_patch_change(patch, key);
1984 }
1985
1986 void
1987 MidiRegionView::maybe_remove_deleted_note_from_selection (NoteBase* cne)
1988 {
1989         if (_selection.empty()) {
1990                 return;
1991         }
1992
1993         _selection.erase (cne);
1994 }
1995
1996 void
1997 MidiRegionView::delete_selection()
1998 {
1999         if (_selection.empty()) {
2000                 return;
2001         }
2002
2003         start_note_diff_command (_("delete selection"));
2004
2005         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2006                 if ((*i)->selected()) {
2007                         _note_diff_command->remove((*i)->note());
2008                 }
2009         }
2010
2011         _selection.clear();
2012
2013         apply_diff ();
2014 }
2015
2016 void
2017 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
2018 {
2019         start_note_diff_command (_("delete note"));
2020         _note_diff_command->remove (n);
2021         apply_diff ();
2022
2023         trackview.editor().verbose_cursor()->hide ();
2024 }
2025
2026 void
2027 MidiRegionView::clear_selection_except (NoteBase* ev, bool signal)
2028 {
2029         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2030                 if ((*i) != ev) {
2031                         Selection::iterator tmp = i;
2032                         ++tmp;
2033
2034                         (*i)->set_selected (false);
2035                         (*i)->hide_velocity ();
2036                         _selection.erase (i);
2037
2038                         i = tmp;
2039                 } else {
2040                         ++i;
2041                 }
2042         }
2043
2044         if (!ev && _entered) {
2045                 // Clearing selection entirely, ungrab keyboard
2046                 Keyboard::magic_widget_drop_focus();
2047                 _grabbed_keyboard = false;
2048         }
2049
2050         /* this does not change the status of this regionview w.r.t the editor
2051            selection.
2052         */
2053
2054         if (signal) {
2055                 SelectionCleared (this); /* EMIT SIGNAL */
2056         }
2057 }
2058
2059 void
2060 MidiRegionView::unique_select(NoteBase* ev)
2061 {
2062         const bool selection_was_empty = _selection.empty();
2063
2064         clear_selection_except (ev);
2065
2066         /* don't bother with checking to see if we should remove this
2067            regionview from the editor selection, since we're about to add
2068            another note, and thus put/keep this regionview in the editor
2069            selection anyway.
2070         */
2071
2072         if (!ev->selected()) {
2073                 add_to_selection (ev);
2074                 if (selection_was_empty && _entered) {
2075                         // Grab keyboard for moving notes with arrow keys
2076                         Keyboard::magic_widget_grab_focus();
2077                         _grabbed_keyboard = true;
2078                 }
2079         }
2080 }
2081
2082 void
2083 MidiRegionView::select_all_notes ()
2084 {
2085         clear_selection ();
2086
2087         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2088                 add_to_selection (*i);
2089         }
2090 }
2091
2092 void
2093 MidiRegionView::select_range (framepos_t start, framepos_t end)
2094 {
2095         clear_selection ();
2096
2097         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2098                 framepos_t t = source_beats_to_absolute_frames((*i)->note()->time());
2099                 if (t >= start && t <= end) {
2100                         add_to_selection (*i);
2101                 }
2102         }
2103 }
2104
2105 void
2106 MidiRegionView::invert_selection ()
2107 {
2108         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2109                 if ((*i)->selected()) {
2110                         remove_from_selection(*i);
2111                 } else {
2112                         add_to_selection (*i);
2113                 }
2114         }
2115 }
2116
2117 void
2118 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
2119 {
2120         bool have_selection = !_selection.empty();
2121         uint8_t low_note = 127;
2122         uint8_t high_note = 0;
2123         MidiModel::Notes& notes (_model->notes());
2124         _optimization_iterator = _events.begin();
2125         
2126         if (extend && !have_selection) {
2127                 extend = false;
2128         }
2129
2130         /* scan existing selection to get note range */
2131         
2132         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2133                 if ((*i)->note()->note() < low_note) {
2134                         low_note = (*i)->note()->note();
2135                 }
2136                 if ((*i)->note()->note() > high_note) {
2137                         high_note = (*i)->note()->note();
2138                 }
2139         }
2140         
2141         if (!add) {
2142                 clear_selection ();
2143
2144                 if (!extend && (low_note == high_note) && (high_note == notenum)) {
2145                         /* only note previously selected is the one we are
2146                          * reselecting. treat this as cancelling the selection.
2147                          */
2148                         return;
2149                 }
2150         }
2151
2152         if (extend) {
2153                 low_note = min (low_note, notenum);
2154                 high_note = max (high_note, notenum);
2155         }
2156
2157         _no_sound_notes = true;
2158
2159         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2160
2161                 boost::shared_ptr<NoteType> note (*n);
2162                 NoteBase* cne;
2163                 bool select = false;
2164
2165                 if (((1 << note->channel()) & channel_mask) != 0) {
2166                         if (extend) {
2167                                 if ((note->note() >= low_note && note->note() <= high_note)) {
2168                                         select = true;
2169                                 }
2170                         } else if (note->note() == notenum) {
2171                                 select = true;
2172                         }
2173                 }
2174
2175                 if (select) {
2176                         if ((cne = find_canvas_note (note)) != 0) {
2177                                 // extend is false because we've taken care of it,
2178                                 // since it extends by time range, not pitch.
2179                                 note_selected (cne, add, false);
2180                         }
2181                 }
2182
2183                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
2184
2185         }
2186
2187         _no_sound_notes = false;
2188 }
2189
2190 void
2191 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
2192 {
2193         MidiModel::Notes& notes (_model->notes());
2194         _optimization_iterator = _events.begin();
2195
2196         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2197
2198                 boost::shared_ptr<NoteType> note (*n);
2199                 NoteBase* cne;
2200
2201                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
2202                         if ((cne = find_canvas_note (note)) != 0) {
2203                                 if (cne->selected()) {
2204                                         note_deselected (cne);
2205                                 } else {
2206                                         note_selected (cne, true, false);
2207                                 }
2208                         }
2209                 }
2210         }
2211 }
2212
2213 void
2214 MidiRegionView::note_selected (NoteBase* ev, bool add, bool extend)
2215 {
2216         if (!add) {
2217                 clear_selection_except (ev);
2218                 if (!_selection.empty()) {
2219                         PublicEditor& editor (trackview.editor());
2220                         editor.get_selection().add (this);
2221                 }
2222         }
2223
2224         if (!extend) {
2225
2226                 if (!ev->selected()) {
2227                         add_to_selection (ev);
2228                 }
2229
2230         } else {
2231                 /* find end of latest note selected, select all between that and the start of "ev" */
2232
2233                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2234                 Evoral::MusicalTime latest   = Evoral::MusicalTime();
2235
2236                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2237                         if ((*i)->note()->end_time() > latest) {
2238                                 latest = (*i)->note()->end_time();
2239                         }
2240                         if ((*i)->note()->time() < earliest) {
2241                                 earliest = (*i)->note()->time();
2242                         }
2243                 }
2244
2245                 if (ev->note()->end_time() > latest) {
2246                         latest = ev->note()->end_time();
2247                 }
2248
2249                 if (ev->note()->time() < earliest) {
2250                         earliest = ev->note()->time();
2251                 }
2252
2253                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2254
2255                         /* find notes entirely within OR spanning the earliest..latest range */
2256
2257                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
2258                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
2259                                 add_to_selection (*i);
2260                         }
2261
2262                 }
2263         }
2264 }
2265
2266 void
2267 MidiRegionView::note_deselected(NoteBase* ev)
2268 {
2269         remove_from_selection (ev);
2270 }
2271
2272 void
2273 MidiRegionView::update_drag_selection(framepos_t start, framepos_t end, double gy0, double gy1, bool extend)
2274 {
2275         PublicEditor& editor = trackview.editor();
2276
2277         // Convert to local coordinates
2278         const framepos_t p  = _region->position();
2279         const double     y  = midi_view()->y_position();
2280         const double     x0 = editor.sample_to_pixel(max((framepos_t)0, start - p));
2281         const double     x1 = editor.sample_to_pixel(max((framepos_t)0, end - p));
2282         const double     y0 = max(0.0, gy0 - y);
2283         const double     y1 = max(0.0, gy1 - y);
2284
2285         // TODO: Make this faster by storing the last updated selection rect, and only
2286         // adjusting things that are in the area that appears/disappeared.
2287         // We probably need a tree to be able to find events in O(log(n)) time.
2288
2289         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2290                 if ((*i)->x0() < x1 && (*i)->x1() > x0 && (*i)->y0() < y1 && (*i)->y1() > y0) {
2291                         // Rectangles intersect
2292                         if (!(*i)->selected()) {
2293                                 add_to_selection (*i);
2294                         }
2295                 } else if ((*i)->selected() && !extend) {
2296                         // Rectangles do not intersect
2297                         remove_from_selection (*i);
2298                 }
2299         }
2300
2301         typedef RouteTimeAxisView::AutomationTracks ATracks;
2302         typedef std::list<Selectable*>              Selectables;
2303
2304         /* Add control points to selection. */
2305         const ATracks& atracks = midi_view()->automation_tracks();
2306         Selectables    selectables;
2307         editor.get_selection().clear_points();
2308         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
2309                 a->second->get_selectables(start, end, gy0, gy1, selectables);
2310                 for (Selectables::const_iterator s = selectables.begin(); s != selectables.end(); ++s) {
2311                         ControlPoint* cp = dynamic_cast<ControlPoint*>(*s);
2312                         if (cp) {
2313                                 editor.get_selection().add(cp);
2314                         }
2315                 }
2316                 a->second->set_selected_points(editor.get_selection().points);
2317         }
2318 }
2319
2320 void
2321 MidiRegionView::update_vertical_drag_selection (double y1, double y2, bool extend)
2322 {
2323         if (y1 > y2) {
2324                 swap (y1, y2);
2325         }
2326
2327         // TODO: Make this faster by storing the last updated selection rect, and only
2328         // adjusting things that are in the area that appears/disappeared.
2329         // We probably need a tree to be able to find events in O(log(n)) time.
2330
2331         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2332                 if (((*i)->y1() >= y1 && (*i)->y1() <= y2)) {
2333                         // within y- (note-) range
2334                         if (!(*i)->selected()) {
2335                                 add_to_selection (*i);
2336                         }
2337                 } else if ((*i)->selected() && !extend) {
2338                         remove_from_selection (*i);
2339                 }
2340         }
2341 }
2342
2343 void
2344 MidiRegionView::remove_from_selection (NoteBase* ev)
2345 {
2346         Selection::iterator i = _selection.find (ev);
2347
2348         if (i != _selection.end()) {
2349                 _selection.erase (i);
2350                 if (_selection.empty() && _grabbed_keyboard) {
2351                         // Ungrab keyboard
2352                         Keyboard::magic_widget_drop_focus();
2353                         _grabbed_keyboard = false;
2354                 }
2355         }
2356
2357         ev->set_selected (false);
2358         ev->hide_velocity ();
2359
2360         if (_selection.empty()) {
2361                 PublicEditor& editor (trackview.editor());
2362                 editor.get_selection().remove (this);
2363         }
2364 }
2365
2366 void
2367 MidiRegionView::add_to_selection (NoteBase* ev)
2368 {
2369         const bool selection_was_empty = _selection.empty();
2370
2371         if (_selection.insert (ev).second) {
2372                 ev->set_selected (true);
2373                 start_playing_midi_note ((ev)->note());
2374                 if (selection_was_empty && _entered) {
2375                         // Grab keyboard for moving notes with arrow keys
2376                         Keyboard::magic_widget_grab_focus();
2377                         _grabbed_keyboard = true;
2378                 }
2379         }
2380
2381         if (selection_was_empty) {
2382                 PublicEditor& editor (trackview.editor());
2383                 editor.get_selection().add (this);
2384         }
2385 }
2386
2387 void
2388 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
2389 {
2390         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2391         PossibleChord to_play;
2392         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2393
2394         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2395                 if ((*i)->note()->time() < earliest) {
2396                         earliest = (*i)->note()->time();
2397                 }
2398         }
2399
2400         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2401                 if ((*i)->note()->time() == earliest) {
2402                         to_play.push_back ((*i)->note());
2403                 }
2404                 (*i)->move_event(dx, dy);
2405         }
2406
2407         if (dy && !_selection.empty() && !_no_sound_notes && ARDOUR_UI::config()->get_sound_midi_notes()) {
2408
2409                 if (to_play.size() > 1) {
2410
2411                         PossibleChord shifted;
2412
2413                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2414                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2415                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2416                                 shifted.push_back (moved_note);
2417                         }
2418
2419                         start_playing_midi_chord (shifted);
2420
2421                 } else if (!to_play.empty()) {
2422
2423                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2424                         moved_note->set_note (moved_note->note() + cumulative_dy);
2425                         start_playing_midi_note (moved_note);
2426                 }
2427         }
2428 }
2429
2430 void
2431 MidiRegionView::note_dropped(NoteBase *, frameoffset_t dt, int8_t dnote)
2432 {
2433         uint8_t lowest_note_in_selection  = 127;
2434         uint8_t highest_note_in_selection = 0;
2435         uint8_t highest_note_difference   = 0;
2436
2437         // find highest and lowest notes first
2438
2439         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2440                 uint8_t pitch = (*i)->note()->note();
2441                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2442                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2443         }
2444
2445         /*
2446           cerr << "dnote: " << (int) dnote << endl;
2447           cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2448           << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2449           cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2450           << int(highest_note_in_selection) << endl;
2451           cerr << "selection size: " << _selection.size() << endl;
2452           cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2453         */
2454
2455         // Make sure the note pitch does not exceed the MIDI standard range
2456         if (highest_note_in_selection + dnote > 127) {
2457                 highest_note_difference = highest_note_in_selection - 127;
2458         }
2459
2460         start_note_diff_command (_("move notes"));
2461
2462         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2463                 
2464                 framepos_t new_frames = source_beats_to_absolute_frames ((*i)->note()->time()) + dt;
2465                 Evoral::MusicalTime new_time = absolute_frames_to_source_beats (new_frames);
2466
2467                 if (new_time < 0) {
2468                         continue;
2469                 }
2470
2471                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2472
2473                 uint8_t original_pitch = (*i)->note()->note();
2474                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2475
2476                 // keep notes in standard midi range
2477                 clamp_to_0_127(new_pitch);
2478
2479                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2480                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2481
2482                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2483         }
2484
2485         apply_diff();
2486
2487         // care about notes being moved beyond the upper/lower bounds on the canvas
2488         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2489             highest_note_in_selection > midi_stream_view()->highest_note()) {
2490                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2491         }
2492 }
2493
2494 /** @param x Pixel relative to the region position.
2495  *  @return Snapped frame relative to the region position.
2496  */
2497 framepos_t
2498 MidiRegionView::snap_pixel_to_sample(double x)
2499 {
2500         PublicEditor& editor (trackview.editor());
2501         return snap_frame_to_frame (editor.pixel_to_sample (x));
2502 }
2503
2504 /** @param x Pixel relative to the region position.
2505  *  @return Snapped pixel relative to the region position.
2506  */
2507 double
2508 MidiRegionView::snap_to_pixel(double x)
2509 {
2510         return (double) trackview.editor().sample_to_pixel(snap_pixel_to_sample(x));
2511 }
2512
2513 double
2514 MidiRegionView::get_position_pixels()
2515 {
2516         framepos_t region_frame = get_position();
2517         return trackview.editor().sample_to_pixel(region_frame);
2518 }
2519
2520 double
2521 MidiRegionView::get_end_position_pixels()
2522 {
2523         framepos_t frame = get_position() + get_duration ();
2524         return trackview.editor().sample_to_pixel(frame);
2525 }
2526
2527 framepos_t
2528 MidiRegionView::source_beats_to_absolute_frames(Evoral::MusicalTime beats) const
2529 {
2530         /* the time converter will return the frame corresponding to `beats'
2531            relative to the start of the source. The start of the source
2532            is an implied position given by region->position - region->start
2533         */
2534         const framepos_t source_start = _region->position() - _region->start();
2535         return  source_start +  _source_relative_time_converter.to (beats);
2536 }
2537
2538 Evoral::MusicalTime
2539 MidiRegionView::absolute_frames_to_source_beats(framepos_t frames) const
2540 {
2541         /* the `frames' argument needs to be converted into a frame count
2542            relative to the start of the source before being passed in to the
2543            converter.
2544         */
2545         const framepos_t source_start = _region->position() - _region->start();
2546         return  _source_relative_time_converter.from (frames - source_start);
2547 }
2548
2549 framepos_t
2550 MidiRegionView::region_beats_to_region_frames(Evoral::MusicalTime beats) const
2551 {
2552         return _region_relative_time_converter.to(beats);
2553 }
2554
2555 Evoral::MusicalTime
2556 MidiRegionView::region_frames_to_region_beats(framepos_t frames) const
2557 {
2558         return _region_relative_time_converter.from(frames);
2559 }
2560
2561 void
2562 MidiRegionView::begin_resizing (bool /*at_front*/)
2563 {
2564         _resize_data.clear();
2565
2566         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2567                 Note *note = dynamic_cast<Note*> (*i);
2568
2569                 // only insert CanvasNotes into the map
2570                 if (note) {
2571                         NoteResizeData *resize_data = new NoteResizeData();
2572                         resize_data->note = note;
2573
2574                         // create a new SimpleRect from the note which will be the resize preview
2575                         ArdourCanvas::Rectangle *resize_rect = new ArdourCanvas::Rectangle (_note_group, 
2576                                                                                             ArdourCanvas::Rect (note->x0(), note->y0(), note->x0(), note->y1()));
2577
2578                         // calculate the colors: get the color settings
2579                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2580                                 ARDOUR_UI::config()->color ("midi note selected"),
2581                                 128);
2582
2583                         // make the resize preview notes more transparent and bright
2584                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2585
2586                         // calculate color based on note velocity
2587                         resize_rect->set_fill_color (UINT_INTERPOLATE(
2588                                 NoteBase::meter_style_fill_color(note->note()->velocity(), note->selected()),
2589                                 fill_color,
2590                                 0.85));
2591
2592                         resize_rect->set_outline_color (NoteBase::calculate_outline (
2593                                                                 ARDOUR_UI::config()->color ("midi note selected")));
2594
2595                         resize_data->resize_rect = resize_rect;
2596                         _resize_data.push_back(resize_data);
2597                 }
2598         }
2599 }
2600
2601 /** Update resizing notes while user drags.
2602  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2603  * @param at_front which end of the note (true == note on, false == note off)
2604  * @param delta_x change in mouse position since the start of the drag
2605  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2606  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2607  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2608  * as the \a primary note.
2609  */
2610 void
2611 MidiRegionView::update_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative)
2612 {
2613         bool cursor_set = false;
2614
2615         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2616                 ArdourCanvas::Rectangle* resize_rect = (*i)->resize_rect;
2617                 Note* canvas_note = (*i)->note;
2618                 double current_x;
2619
2620                 if (at_front) {
2621                         if (relative) {
2622                                 current_x = canvas_note->x0() + delta_x;
2623                         } else {
2624                                 current_x = primary->x0() + delta_x;
2625                         }
2626                 } else {
2627                         if (relative) {
2628                                 current_x = canvas_note->x1() + delta_x;
2629                         } else {
2630                                 current_x = primary->x1() + delta_x;
2631                         }
2632                 }
2633
2634                 if (current_x < 0) {
2635                         // This works even with snapping because RegionView::snap_frame_to_frame()
2636                         // snaps forward if the snapped sample is before the beginning of the region
2637                         current_x = 0;
2638                 }
2639                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
2640                         current_x = trackview.editor().sample_to_pixel(_region->length());
2641                 }
2642
2643                 if (at_front) {
2644                         resize_rect->set_x0 (snap_to_pixel(current_x));
2645                         resize_rect->set_x1 (canvas_note->x1());
2646                 } else {
2647                         resize_rect->set_x1 (snap_to_pixel(current_x));
2648                         resize_rect->set_x0 (canvas_note->x0());
2649                 }
2650
2651                 if (!cursor_set) {
2652                         const double        snapped_x = snap_pixel_to_sample (current_x);
2653                         Evoral::MusicalTime beats     = region_frames_to_region_beats (snapped_x);
2654                         Evoral::MusicalTime len       = Evoral::MusicalTime();
2655
2656                         if (at_front) {
2657                                 if (beats < canvas_note->note()->end_time()) {
2658                                         len = canvas_note->note()->time() - beats;
2659                                         len += canvas_note->note()->length();
2660                                 }
2661                         } else {
2662                                 if (beats >= canvas_note->note()->time()) {
2663                                         len = beats - canvas_note->note()->time();
2664                                 }
2665                         }
2666
2667                         char buf[16];
2668                         snprintf (buf, sizeof (buf), "%.3g beats", len.to_double());
2669                         show_verbose_cursor (buf, 0, 0);
2670
2671                         cursor_set = true;
2672                 }
2673
2674         }
2675 }
2676
2677
2678 /** Finish resizing notes when the user releases the mouse button.
2679  *  Parameters the same as for \a update_resizing().
2680  */
2681 void
2682 MidiRegionView::commit_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative)
2683 {
2684         start_note_diff_command (_("resize notes"));
2685
2686         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2687                 Note*  canvas_note = (*i)->note;
2688                 ArdourCanvas::Rectangle*  resize_rect = (*i)->resize_rect;
2689
2690                 /* Get the new x position for this resize, which is in pixels relative
2691                  * to the region position.
2692                  */
2693                 
2694                 double current_x;
2695
2696                 if (at_front) {
2697                         if (relative) {
2698                                 current_x = canvas_note->x0() + delta_x;
2699                         } else {
2700                                 current_x = primary->x0() + delta_x;
2701                         }
2702                 } else {
2703                         if (relative) {
2704                                 current_x = canvas_note->x1() + delta_x;
2705                         } else {
2706                                 current_x = primary->x1() + delta_x;
2707                         }
2708                 }
2709
2710                 if (current_x < 0) {
2711                         current_x = 0;
2712                 }
2713                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
2714                         current_x = trackview.editor().sample_to_pixel(_region->length());
2715                 }
2716
2717                 /* Convert that to a frame within the source */
2718                 current_x = snap_pixel_to_sample (current_x) + _region->start ();
2719
2720                 /* and then to beats */
2721                 const Evoral::MusicalTime x_beats = region_frames_to_region_beats (current_x);
2722
2723                 if (at_front && x_beats < canvas_note->note()->end_time()) {
2724                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, x_beats);
2725
2726                         Evoral::MusicalTime len = canvas_note->note()->time() - x_beats;
2727                         len += canvas_note->note()->length();
2728
2729                         if (!!len) {
2730                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2731                         }
2732                 }
2733
2734                 if (!at_front) {
2735                         const Evoral::MusicalTime len = x_beats - canvas_note->note()->time();
2736
2737                         if (!!len) {
2738                                 /* XXX convert to beats */
2739                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2740                         }
2741                 }
2742
2743                 delete resize_rect;
2744                 delete (*i);
2745         }
2746
2747         _resize_data.clear();
2748         apply_diff();
2749 }
2750
2751 void
2752 MidiRegionView::abort_resizing ()
2753 {
2754         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2755                 delete (*i)->resize_rect;
2756                 delete *i;
2757         }
2758
2759         _resize_data.clear ();
2760 }
2761
2762 void
2763 MidiRegionView::change_note_velocity(NoteBase* event, int8_t velocity, bool relative)
2764 {
2765         uint8_t new_velocity;
2766
2767         if (relative) {
2768                 new_velocity = event->note()->velocity() + velocity;
2769                 clamp_to_0_127(new_velocity);
2770         } else {
2771                 new_velocity = velocity;
2772         }
2773
2774         event->set_selected (event->selected()); // change color
2775
2776         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
2777 }
2778
2779 void
2780 MidiRegionView::change_note_note (NoteBase* event, int8_t note, bool relative)
2781 {
2782         uint8_t new_note;
2783
2784         if (relative) {
2785                 new_note = event->note()->note() + note;
2786         } else {
2787                 new_note = note;
2788         }
2789
2790         clamp_to_0_127 (new_note);
2791         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
2792 }
2793
2794 void
2795 MidiRegionView::trim_note (NoteBase* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2796 {
2797         bool change_start = false;
2798         bool change_length = false;
2799         Evoral::MusicalTime new_start;
2800         Evoral::MusicalTime new_length;
2801
2802         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2803
2804            front_delta: if positive - move the start of the note later in time (shortening it)
2805            if negative - move the start of the note earlier in time (lengthening it)
2806
2807            end_delta:   if positive - move the end of the note later in time (lengthening it)
2808            if negative - move the end of the note earlier in time (shortening it)
2809         */
2810
2811         if (!!front_delta) {
2812                 if (front_delta < 0) {
2813
2814                         if (event->note()->time() < -front_delta) {
2815                                 new_start = Evoral::MusicalTime();
2816                         } else {
2817                                 new_start = event->note()->time() + front_delta; // moves earlier
2818                         }
2819
2820                         /* start moved toward zero, so move the end point out to where it used to be.
2821                            Note that front_delta is negative, so this increases the length.
2822                         */
2823
2824                         new_length = event->note()->length() - front_delta;
2825                         change_start = true;
2826                         change_length = true;
2827
2828                 } else {
2829
2830                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2831
2832                         if (new_pos < event->note()->end_time()) {
2833                                 new_start = event->note()->time() + front_delta;
2834                                 /* start moved toward the end, so move the end point back to where it used to be */
2835                                 new_length = event->note()->length() - front_delta;
2836                                 change_start = true;
2837                                 change_length = true;
2838                         }
2839                 }
2840
2841         }
2842
2843         if (!!end_delta) {
2844                 bool can_change = true;
2845                 if (end_delta < 0) {
2846                         if (event->note()->length() < -end_delta) {
2847                                 can_change = false;
2848                         }
2849                 }
2850
2851                 if (can_change) {
2852                         new_length = event->note()->length() + end_delta;
2853                         change_length = true;
2854                 }
2855         }
2856
2857         if (change_start) {
2858                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
2859         }
2860
2861         if (change_length) {
2862                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
2863         }
2864 }
2865
2866 void
2867 MidiRegionView::change_note_channel (NoteBase* event, int8_t chn, bool relative)
2868 {
2869         uint8_t new_channel;
2870
2871         if (relative) {
2872                 if (chn < 0.0) {
2873                         if (event->note()->channel() < -chn) {
2874                                 new_channel = 0;
2875                         } else {
2876                                 new_channel = event->note()->channel() + chn;
2877                         }
2878                 } else {
2879                         new_channel = event->note()->channel() + chn;
2880                 }
2881         } else {
2882                 new_channel = (uint8_t) chn;
2883         }
2884
2885         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, new_channel);
2886 }
2887
2888 void
2889 MidiRegionView::change_note_time (NoteBase* event, Evoral::MusicalTime delta, bool relative)
2890 {
2891         Evoral::MusicalTime new_time;
2892
2893         if (relative) {
2894                 if (delta < 0.0) {
2895                         if (event->note()->time() < -delta) {
2896                                 new_time = Evoral::MusicalTime();
2897                         } else {
2898                                 new_time = event->note()->time() + delta;
2899                         }
2900                 } else {
2901                         new_time = event->note()->time() + delta;
2902                 }
2903         } else {
2904                 new_time = delta;
2905         }
2906
2907         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
2908 }
2909
2910 void
2911 MidiRegionView::change_note_length (NoteBase* event, Evoral::MusicalTime t)
2912 {
2913         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
2914 }
2915
2916 void
2917 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush, bool all_together)
2918 {
2919         int8_t delta;
2920         int8_t value = 0;
2921
2922         if (_selection.empty()) {
2923                 return;
2924         }
2925
2926         if (fine) {
2927                 delta = 1;
2928         } else {
2929                 delta = 10;
2930         }
2931
2932         if (!up) {
2933                 delta = -delta;
2934         }
2935
2936         if (!allow_smush) {
2937                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2938                         if ((*i)->note()->velocity() < -delta || (*i)->note()->velocity() + delta > 127) {
2939                                 goto cursor_label;
2940                         }
2941                 }
2942         }
2943
2944         start_note_diff_command (_("change velocities"));
2945
2946         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2947                 Selection::iterator next = i;
2948                 ++next;
2949
2950                 if (all_together) {
2951                         if (i == _selection.begin()) {
2952                                 change_note_velocity (*i, delta, true);
2953                                 value = (*i)->note()->velocity() + delta;
2954                         } else {
2955                                 change_note_velocity (*i, value, false);
2956                         }
2957
2958                 } else {
2959                         change_note_velocity (*i, delta, true);
2960                 }
2961
2962                 i = next;
2963         }
2964
2965         apply_diff();
2966
2967   cursor_label:
2968         if (!_selection.empty()) {
2969                 char buf[24];
2970                 snprintf (buf, sizeof (buf), "Vel %d",
2971                           (int) (*_selection.begin())->note()->velocity());
2972                 show_verbose_cursor (buf, 10, 10);
2973         }
2974 }
2975
2976
2977 void
2978 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2979 {
2980         if (_selection.empty()) {
2981                 return;
2982         }
2983
2984         int8_t delta;
2985
2986         if (fine) {
2987                 delta = 1;
2988         } else {
2989                 delta = 12;
2990         }
2991
2992         if (!up) {
2993                 delta = -delta;
2994         }
2995
2996         if (!allow_smush) {
2997                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2998                         if (!up) {
2999                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
3000                                         return;
3001                                 }
3002                         } else {
3003                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
3004                                         return;
3005                                 }
3006                         }
3007                 }
3008         }
3009
3010         start_note_diff_command (_("transpose"));
3011
3012         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3013                 Selection::iterator next = i;
3014                 ++next;
3015                 change_note_note (*i, delta, true);
3016                 i = next;
3017         }
3018
3019         apply_diff ();
3020 }
3021
3022 void
3023 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
3024 {
3025         if (!delta) {
3026                 if (fine) {
3027                         delta = Evoral::MusicalTime(1.0/128.0);
3028                 } else {
3029                         /* grab the current grid distance */
3030                         delta = get_grid_beats(_region->position());
3031                 }
3032         }
3033
3034         if (shorter) {
3035                 delta = -delta;
3036         }
3037
3038         start_note_diff_command (_("change note lengths"));
3039
3040         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3041                 Selection::iterator next = i;
3042                 ++next;
3043
3044                 /* note the negation of the delta for start */
3045
3046                 trim_note (*i,
3047                            (start ? -delta : Evoral::MusicalTime()),
3048                            (end   ? delta  : Evoral::MusicalTime()));
3049                 i = next;
3050         }
3051
3052         apply_diff ();
3053
3054 }
3055
3056 void
3057 MidiRegionView::nudge_notes (bool forward, bool fine)
3058 {
3059         if (_selection.empty()) {
3060                 return;
3061         }
3062
3063         /* pick a note as the point along the timeline to get the nudge distance.
3064            its not necessarily the earliest note, so we may want to pull the notes out
3065            into a vector and sort before using the first one.
3066         */
3067
3068         const framepos_t    ref_point = source_beats_to_absolute_frames ((*(_selection.begin()))->note()->time());
3069         Evoral::MusicalTime delta;
3070
3071         if (!fine) {
3072
3073                 /* non-fine, move by 1 bar regardless of snap */
3074                 delta = Evoral::MusicalTime(trackview.session()->tempo_map().meter_at(ref_point).divisions_per_bar());
3075
3076         } else if (trackview.editor().snap_mode() == Editing::SnapOff) {
3077
3078                 /* grid is off - use nudge distance */
3079
3080                 framepos_t       unused;
3081                 const framecnt_t distance = trackview.editor().get_nudge_distance (ref_point, unused);
3082                 delta = region_frames_to_region_beats (fabs ((double)distance));
3083
3084         } else {
3085
3086                 /* use grid */
3087
3088                 framepos_t next_pos = ref_point;
3089
3090                 if (forward) {
3091                         if (max_framepos - 1 < next_pos) {
3092                                 next_pos += 1;
3093                         }
3094                 } else {
3095                         if (next_pos == 0) {
3096                                 return;
3097                         }
3098                         next_pos -= 1;
3099                 }
3100
3101                 trackview.editor().snap_to (next_pos, (forward ? RoundUpAlways : RoundDownAlways), false);
3102                 const framecnt_t distance = ref_point - next_pos;
3103                 delta = region_frames_to_region_beats (fabs ((double)distance));
3104         }
3105
3106         if (!delta) {
3107                 return;
3108         }
3109
3110         if (!forward) {
3111                 delta = -delta;
3112         }
3113
3114         start_note_diff_command (_("nudge"));
3115
3116         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3117                 Selection::iterator next = i;
3118                 ++next;
3119                 change_note_time (*i, delta, true);
3120                 i = next;
3121         }
3122
3123         apply_diff ();
3124 }
3125
3126 void
3127 MidiRegionView::change_channel(uint8_t channel)
3128 {
3129         start_note_diff_command(_("change channel"));
3130         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3131                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
3132         }
3133
3134         apply_diff();
3135 }
3136
3137
3138 void
3139 MidiRegionView::note_entered(NoteBase* ev)
3140 {
3141         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3142
3143         if (_mouse_state == SelectTouchDragging) {
3144                 note_selected (ev, true);
3145         } else if (editor->current_mouse_mode() == MouseContent) {
3146                 show_verbose_cursor (ev->note ());
3147         } else if (editor->current_mouse_mode() == MouseDraw) {
3148                 show_verbose_cursor (ev->note ());
3149         }
3150 }
3151
3152 void
3153 MidiRegionView::note_left (NoteBase*)
3154 {
3155         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3156
3157         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3158                 (*i)->hide_velocity ();
3159         }
3160
3161         editor->verbose_cursor()->hide ();
3162 }
3163
3164 void
3165 MidiRegionView::patch_entered (PatchChange* p)
3166 {
3167         ostringstream s;
3168         /* XXX should get patch name if we can */
3169         s << _("Bank ") << (p->patch()->bank() + MIDI_BP_ZERO) << '\n' 
3170           << _("Program ") << ((int) p->patch()->program()) + MIDI_BP_ZERO << '\n' 
3171           << _("Channel ") << ((int) p->patch()->channel() + 1);
3172         show_verbose_cursor (s.str(), 10, 20);
3173         p->item().grab_focus();
3174 }
3175
3176 void
3177 MidiRegionView::patch_left (PatchChange *)
3178 {
3179         trackview.editor().verbose_cursor()->hide ();
3180         /* focus will transfer back via the enter-notify event sent to this
3181          * midi region view.
3182          */
3183 }
3184
3185 void
3186 MidiRegionView::sysex_entered (SysEx* p)
3187 {
3188         ostringstream s;
3189         // CAIROCANVAS
3190         // need a way to extract text from p->_flag->_text
3191         // s << p->text();
3192         // show_verbose_cursor (s.str(), 10, 20);
3193         p->item().grab_focus();
3194 }
3195
3196 void
3197 MidiRegionView::sysex_left (SysEx *)
3198 {
3199         trackview.editor().verbose_cursor()->hide ();
3200         /* focus will transfer back via the enter-notify event sent to this
3201          * midi region view.
3202          */
3203 }
3204
3205 void
3206 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
3207 {
3208         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3209         Editing::MouseMode mm = editor->current_mouse_mode();
3210         bool trimmable = (mm == MouseContent || mm == MouseTimeFX || mm == MouseDraw);
3211
3212         Editor::EnterContext* ctx = editor->get_enter_context(NoteItem);
3213         if (can_set_cursor && ctx) {
3214                 if (trimmable && x_fraction > 0.0 && x_fraction < 0.2) {
3215                         ctx->cursor_ctx->change(editor->cursors()->left_side_trim);
3216                 } else if (trimmable && x_fraction >= 0.8 && x_fraction < 1.0) {
3217                         ctx->cursor_ctx->change(editor->cursors()->right_side_trim);
3218                 } else {
3219                         ctx->cursor_ctx->change(editor->cursors()->grabber_note);
3220                 }
3221         }
3222 }
3223
3224 uint32_t
3225 MidiRegionView::get_fill_color() const
3226 {
3227         const std::string mod_name = (_dragging ? "dragging region" :
3228                                       trackview.editor().internal_editing() ? "editable region" :
3229                                       "midi frame base");
3230         if (_selected) {
3231                 return ARDOUR_UI::config()->color_mod ("selected region base", mod_name);
3232         } else if (high_enough_for_name || !ARDOUR_UI::config()->get_color_regions_using_track_color()) {
3233                 return ARDOUR_UI::config()->color_mod ("midi frame base", mod_name);
3234         }
3235         return ARDOUR_UI::config()->color_mod (fill_color, mod_name);
3236 }
3237
3238 void
3239 MidiRegionView::midi_channel_mode_changed ()
3240 {
3241         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3242         uint16_t mask = mtv->midi_track()->get_playback_channel_mask();
3243         ChannelMode mode = mtv->midi_track()->get_playback_channel_mode ();
3244
3245         if (mode == ForceChannel) {
3246                 mask = 0xFFFF; // Show all notes as active (below)
3247         }
3248
3249         // Update notes for selection
3250         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3251                 (*i)->on_channel_selection_change (mask);
3252         }
3253
3254         _patch_changes.clear ();
3255         display_patch_changes ();
3256 }
3257
3258 void
3259 MidiRegionView::instrument_settings_changed ()
3260 {
3261         redisplay_model();
3262 }
3263
3264 void
3265 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
3266 {
3267         if (_selection.empty()) {
3268                 return;
3269         }
3270
3271         PublicEditor& editor (trackview.editor());
3272
3273         switch (op) {
3274         case Delete:
3275                 /* XXX what to do ? */
3276                 break;
3277         case Cut:
3278         case Copy:
3279                 editor.get_cut_buffer().add (selection_as_cut_buffer());
3280                 break;
3281         default:
3282                 break;
3283         }
3284
3285         if (op != Copy) {
3286
3287                 start_note_diff_command();
3288
3289                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3290                         switch (op) {
3291                         case Copy:
3292                                 break;
3293                         case Delete:
3294                         case Cut:
3295                         case Clear:
3296                                 note_diff_remove_note (*i);
3297                                 break;
3298                         }
3299                 }
3300
3301                 apply_diff();
3302         }
3303 }
3304
3305 MidiCutBuffer*
3306 MidiRegionView::selection_as_cut_buffer () const
3307 {
3308         Notes notes;
3309
3310         for (Selection::const_iterator i = _selection.begin(); i != _selection.end(); ++i) {
3311                 NoteType* n = (*i)->note().get();
3312                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
3313         }
3314
3315         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
3316         cb->set (notes);
3317
3318         return cb;
3319 }
3320
3321 /** This method handles undo */
3322 bool
3323 MidiRegionView::paste (framepos_t pos, const ::Selection& selection, PasteContext& ctx)
3324 {
3325         // Paste notes, if available
3326         MidiNoteSelection::const_iterator m = selection.midi_notes.get_nth(ctx.counts.n_notes());
3327         if (m != selection.midi_notes.end()) {
3328                 ctx.counts.increase_n_notes();
3329                 paste_internal(pos, ctx.count, ctx.times, **m);
3330         }
3331
3332         // Paste control points to automation children, if available
3333         typedef RouteTimeAxisView::AutomationTracks ATracks;
3334         const ATracks& atracks = midi_view()->automation_tracks();
3335         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
3336                 a->second->paste(pos, selection, ctx);
3337         }
3338
3339         return true;
3340 }
3341
3342 /** This method handles undo */
3343 void
3344 MidiRegionView::paste_internal (framepos_t pos, unsigned paste_count, float times, const MidiCutBuffer& mcb)
3345 {
3346         if (mcb.empty()) {
3347                 return;
3348         }
3349
3350         start_note_diff_command (_("paste"));
3351
3352         const Evoral::MusicalTime snap_beats    = get_grid_beats(pos);
3353         const Evoral::MusicalTime first_time    = (*mcb.notes().begin())->time();
3354         const Evoral::MusicalTime last_time     = (*mcb.notes().rbegin())->end_time();
3355         const Evoral::MusicalTime duration      = last_time - first_time;
3356         const Evoral::MusicalTime snap_duration = duration.snap_to(snap_beats);
3357         const Evoral::MusicalTime paste_offset  = snap_duration * paste_count;
3358         const Evoral::MusicalTime pos_beats     = absolute_frames_to_source_beats(pos) + paste_offset;
3359         Evoral::MusicalTime       end_point     = Evoral::MusicalTime();
3360
3361         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste data spans from %1 to %2 (%3) ; paste pos beats = %4 (based on %5 - %6)\n",
3362                                                        first_time,
3363                                                        last_time,
3364                                                        duration, pos, _region->position(),
3365                                                        pos_beats));
3366
3367         clear_selection ();
3368
3369         for (int n = 0; n < (int) times; ++n) {
3370
3371                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3372
3373                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3374                         copied_note->set_time (pos_beats + copied_note->time() - first_time);
3375
3376                         /* make all newly added notes selected */
3377
3378                         note_diff_add_note (copied_note, true);
3379                         end_point = copied_note->end_time();
3380                 }
3381         }
3382
3383         /* if we pasted past the current end of the region, extend the region */
3384
3385         framepos_t end_frame = source_beats_to_absolute_frames (end_point);
3386         framepos_t region_end = _region->position() + _region->length() - 1;
3387
3388         if (end_frame > region_end) {
3389
3390                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3391
3392                 _region->clear_changes ();
3393                 _region->set_length (end_frame - _region->position());
3394                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3395         }
3396
3397         apply_diff (true);
3398 }
3399
3400 struct EventNoteTimeEarlyFirstComparator {
3401         bool operator() (NoteBase* a, NoteBase* b) {
3402                 return a->note()->time() < b->note()->time();
3403         }
3404 };
3405
3406 void
3407 MidiRegionView::time_sort_events ()
3408 {
3409         if (!_sort_needed) {
3410                 return;
3411         }
3412
3413         EventNoteTimeEarlyFirstComparator cmp;
3414         _events.sort (cmp);
3415
3416         _sort_needed = false;
3417 }
3418
3419 void
3420 MidiRegionView::goto_next_note (bool add_to_selection)
3421 {
3422         bool use_next = false;
3423
3424         if (_events.back()->selected()) {
3425                 return;
3426         }
3427
3428         time_sort_events ();
3429
3430         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3431         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask();
3432
3433         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3434                 if ((*i)->selected()) {
3435                         use_next = true;
3436                         continue;
3437                 } else if (use_next) {
3438                         if (channel_mask & (1 << (*i)->note()->channel())) {
3439                                 if (!add_to_selection) {
3440                                         unique_select (*i);
3441                                 } else {
3442                                         note_selected (*i, true, false);
3443                                 }
3444                                 return;
3445                         }
3446                 }
3447         }
3448
3449         /* use the first one */
3450
3451         if (!_events.empty() && (channel_mask & (1 << _events.front()->note()->channel ()))) {
3452                 unique_select (_events.front());
3453         }
3454 }
3455
3456 void
3457 MidiRegionView::goto_previous_note (bool add_to_selection)
3458 {
3459         bool use_next = false;
3460
3461         if (_events.front()->selected()) {
3462                 return;
3463         }
3464
3465         time_sort_events ();
3466
3467         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3468         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask ();
3469
3470         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
3471                 if ((*i)->selected()) {
3472                         use_next = true;
3473                         continue;
3474                 } else if (use_next) {
3475                         if (channel_mask & (1 << (*i)->note()->channel())) {
3476                                 if (!add_to_selection) {
3477                                         unique_select (*i);
3478                                 } else {
3479                                         note_selected (*i, true, false);
3480                                 }
3481                                 return;
3482                         }
3483                 }
3484         }
3485
3486         /* use the last one */
3487
3488         if (!_events.empty() && (channel_mask & (1 << (*_events.rbegin())->note()->channel ()))) {
3489                 unique_select (*(_events.rbegin()));
3490         }
3491 }
3492
3493 void
3494 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3495 {
3496         bool had_selected = false;
3497
3498         time_sort_events ();
3499
3500         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3501                 if ((*i)->selected()) {
3502                         selected.insert ((*i)->note());
3503                         had_selected = true;
3504                 }
3505         }
3506
3507         if (allow_all_if_none_selected && !had_selected) {
3508                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3509                         selected.insert ((*i)->note());
3510                 }
3511         }
3512 }
3513
3514 void
3515 MidiRegionView::update_ghost_note (double x, double y)
3516 {
3517         x = std::max(0.0, x);
3518
3519         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3520
3521         _last_ghost_x = x;
3522         _last_ghost_y = y;
3523
3524         _note_group->canvas_to_item (x, y);
3525
3526         PublicEditor& editor = trackview.editor ();
3527         
3528         framepos_t const unsnapped_frame = editor.pixel_to_sample (x);
3529         framecnt_t grid_frames;
3530         framepos_t const f = snap_frame_to_grid_underneath (unsnapped_frame, grid_frames);
3531
3532         /* use region_frames... because we are converting a delta within the region
3533         */
3534          
3535         const Evoral::MusicalTime length = get_grid_beats(unsnapped_frame);
3536
3537         /* note that this sets the time of the ghost note in beats relative to
3538            the start of the source; that is how all note times are stored.
3539         */
3540         _ghost_note->note()->set_time (
3541                 std::max(Evoral::MusicalTime(),
3542                          absolute_frames_to_source_beats (f + _region->position ())));
3543         _ghost_note->note()->set_length (length);
3544         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
3545         _ghost_note->note()->set_channel (mtv->get_channel_for_add ());
3546
3547         /* the ghost note does not appear in ghost regions, so pass false in here */
3548         update_note (_ghost_note, false);
3549
3550         show_verbose_cursor (_ghost_note->note ());
3551 }
3552
3553 void
3554 MidiRegionView::create_ghost_note (double x, double y)
3555 {
3556         remove_ghost_note ();
3557
3558         boost::shared_ptr<NoteType> g (new NoteType);
3559         _ghost_note = new Note (*this, _note_group, g);
3560         _ghost_note->set_ignore_events (true);
3561         _ghost_note->set_outline_color (0x000000aa);
3562         update_ghost_note (x, y);
3563         _ghost_note->show ();
3564
3565         show_verbose_cursor (_ghost_note->note ());
3566 }
3567
3568 void
3569 MidiRegionView::remove_ghost_note ()
3570 {
3571         delete _ghost_note;
3572         _ghost_note = 0;
3573 }
3574
3575 void
3576 MidiRegionView::snap_changed ()
3577 {
3578         if (!_ghost_note) {
3579                 return;
3580         }
3581
3582         create_ghost_note (_last_ghost_x, _last_ghost_y);
3583 }
3584
3585 void
3586 MidiRegionView::drop_down_keys ()
3587 {
3588         _mouse_state = None;
3589 }
3590
3591 void
3592 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
3593 {
3594         /* XXX: This is dead code.  What was it for? */
3595
3596         double note = midi_stream_view()->y_to_note(y);
3597         Events e;
3598         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3599
3600         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
3601
3602         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3603                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3604         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3605                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3606         } else {
3607                 return;
3608         }
3609
3610         bool add_mrv_selection = false;
3611
3612         if (_selection.empty()) {
3613                 add_mrv_selection = true;
3614         }
3615
3616         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3617                 if (_selection.insert (*i).second) {
3618                         (*i)->set_selected (true);
3619                 }
3620         }
3621
3622         if (add_mrv_selection) {
3623                 PublicEditor& editor (trackview.editor());
3624                 editor.get_selection().add (this);
3625         }
3626 }
3627
3628 void
3629 MidiRegionView::color_handler ()
3630 {
3631         RegionView::color_handler ();
3632
3633         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3634                 (*i)->set_selected ((*i)->selected()); // will change color
3635         }
3636
3637         /* XXX probably more to do here */
3638 }
3639
3640 void
3641 MidiRegionView::enable_display (bool yn)
3642 {
3643         RegionView::enable_display (yn);
3644         if (yn) {
3645                 redisplay_model ();
3646         }
3647 }
3648
3649 void
3650 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3651 {
3652         if (_step_edit_cursor == 0) {
3653                 ArdourCanvas::Item* const group = get_canvas_group();
3654
3655                 _step_edit_cursor = new ArdourCanvas::Rectangle (group);
3656                 _step_edit_cursor->set_y0 (0);
3657                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
3658                 _step_edit_cursor->set_fill_color (RGBA_TO_UINT (45,0,0,90));
3659                 _step_edit_cursor->set_outline_color (RGBA_TO_UINT (85,0,0,90));
3660         }
3661
3662         move_step_edit_cursor (pos);
3663         _step_edit_cursor->show ();
3664 }
3665
3666 void
3667 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3668 {
3669         _step_edit_cursor_position = pos;
3670
3671         if (_step_edit_cursor) {
3672                 double pixel = trackview.editor().sample_to_pixel (region_beats_to_region_frames (pos));
3673                 _step_edit_cursor->set_x0 (pixel);
3674                 set_step_edit_cursor_width (_step_edit_cursor_width);
3675         }
3676 }
3677
3678 void
3679 MidiRegionView::hide_step_edit_cursor ()
3680 {
3681         if (_step_edit_cursor) {
3682                 _step_edit_cursor->hide ();
3683         }
3684 }
3685
3686 void
3687 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3688 {
3689         _step_edit_cursor_width = beats;
3690
3691         if (_step_edit_cursor) {
3692                 _step_edit_cursor->set_x1 (_step_edit_cursor->x0() + trackview.editor().sample_to_pixel (region_beats_to_region_frames (beats)));
3693         }
3694 }
3695
3696 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3697  *  @param w Source that the data will end up in.
3698  */
3699 void
3700 MidiRegionView::data_recorded (boost::weak_ptr<MidiSource> w)
3701 {
3702         if (!_active_notes) {
3703                 /* we aren't actively being recorded to */
3704                 return;
3705         }
3706
3707         boost::shared_ptr<MidiSource> src = w.lock ();
3708         if (!src || src != midi_region()->midi_source()) {
3709                 /* recorded data was not destined for our source */
3710                 return;
3711         }
3712
3713         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3714
3715         boost::shared_ptr<MidiBuffer> buf = mtv->midi_track()->get_gui_feed_buffer ();
3716
3717         framepos_t back = max_framepos;
3718
3719         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3720                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3721
3722                 if (ev.is_channel_event()) {
3723                         if (get_channel_mode() == FilterChannels) {
3724                                 if (((uint16_t(1) << ev.channel()) & get_selected_channels()) == 0) {
3725                                         continue;
3726                                 }
3727                         }
3728                 }
3729
3730                 /* convert from session frames to source beats */
3731                 Evoral::MusicalTime const time_beats = _source_relative_time_converter.from(ev.time());
3732
3733                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3734                         boost::shared_ptr<NoteType> note (
3735                                 new NoteType (ev.channel(), time_beats, Evoral::MusicalTime(), ev.note(), ev.velocity()));
3736
3737                         add_note (note, true);
3738
3739                         /* fix up our note range */
3740                         if (ev.note() < _current_range_min) {
3741                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3742                         } else if (ev.note() > _current_range_max) {
3743                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3744                         }
3745
3746                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3747                         resolve_note (ev.note (), time_beats);
3748                 }
3749
3750                 back = ev.time ();
3751         }
3752
3753         midi_stream_view()->check_record_layers (region(), back);
3754 }
3755
3756 void
3757 MidiRegionView::trim_front_starting ()
3758 {
3759         /* Reparent the note group to the region view's parent, so that it doesn't change
3760            when the region view is trimmed.
3761         */
3762         _temporary_note_group = new ArdourCanvas::Container (group->parent ());
3763         _temporary_note_group->move (group->position ());
3764         _note_group->reparent (_temporary_note_group);
3765 }
3766
3767 void
3768 MidiRegionView::trim_front_ending ()
3769 {
3770         _note_group->reparent (group);
3771         delete _temporary_note_group;
3772         _temporary_note_group = 0;
3773
3774         if (_region->start() < 0) {
3775                 /* Trim drag made start time -ve; fix this */
3776                 midi_region()->fix_negative_start ();
3777         }
3778 }
3779
3780 void
3781 MidiRegionView::edit_patch_change (PatchChange* pc)
3782 {
3783         PatchChangeDialog d (&_source_relative_time_converter, trackview.session(), *pc->patch (), instrument_info(), Gtk::Stock::APPLY, true);
3784
3785         int response = d.run();
3786
3787         switch (response) {
3788         case Gtk::RESPONSE_ACCEPT:
3789                 break;
3790         case Gtk::RESPONSE_REJECT:
3791                 delete_patch_change (pc);
3792                 return;
3793         default:
3794                 return;
3795         }
3796
3797         change_patch_change (pc->patch(), d.patch ());
3798 }
3799
3800 void
3801 MidiRegionView::delete_sysex (SysEx* /*sysex*/)
3802 {
3803         // CAIROCANVAS
3804         // sysyex object doesn't have a pointer to a sysex event
3805         // MidiModel::SysExDiffCommand* c = _model->new_sysex_diff_command (_("delete sysex"));
3806         // c->remove (sysex->sysex());
3807         // _model->apply_command (*trackview.session(), c);
3808
3809         //_sys_exes.clear ();
3810         // display_sysexes();
3811 }
3812
3813 void
3814 MidiRegionView::show_verbose_cursor (boost::shared_ptr<NoteType> n) const
3815 {
3816         using namespace MIDI::Name;
3817
3818         std::string name;
3819
3820         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3821         if (mtv) {
3822                 boost::shared_ptr<MasterDeviceNames> device_names(mtv->get_device_names());
3823                 if (device_names) {
3824                         MIDI::Name::PatchPrimaryKey patch_key;
3825                         get_patch_key_at(n->time(), n->channel(), patch_key);
3826                         name = device_names->note_name(mtv->gui_property(X_("midnam-custom-device-mode")),
3827                                                        n->channel(),
3828                                                        patch_key.bank(),
3829                                                        patch_key.program(),
3830                                                        n->note());
3831                 }
3832         }
3833
3834         char buf[128];
3835         snprintf (buf, sizeof (buf), "%d %s\nCh %d Vel %d",
3836                   (int) n->note (),
3837                   name.empty() ? Evoral::midi_note_name (n->note()).c_str() : name.c_str(),
3838                   (int) n->channel() + 1,
3839                   (int) n->velocity());
3840
3841         show_verbose_cursor(buf, 10, 20);
3842 }
3843
3844 void
3845 MidiRegionView::show_verbose_cursor (string const & text, double xoffset, double yoffset) const
3846 {
3847         trackview.editor().verbose_cursor()->set (text);
3848         trackview.editor().verbose_cursor()->show ();
3849         trackview.editor().verbose_cursor()->set_offset (ArdourCanvas::Duple (xoffset, yoffset));
3850 }
3851
3852 /** @param p A session framepos.
3853  *  @param grid_frames Filled in with the number of frames that a grid interval is at p.
3854  *  @return p snapped to the grid subdivision underneath it.
3855  */
3856 framepos_t
3857 MidiRegionView::snap_frame_to_grid_underneath (framepos_t p, framecnt_t& grid_frames) const
3858 {
3859         PublicEditor& editor = trackview.editor ();
3860         
3861         const Evoral::MusicalTime grid_beats = get_grid_beats(p);
3862
3863         grid_frames = region_beats_to_region_frames (grid_beats);
3864
3865         /* Hack so that we always snap to the note that we are over, instead of snapping
3866            to the next one if we're more than halfway through the one we're over.
3867         */
3868         if (editor.snap_mode() == SnapNormal && p >= grid_frames / 2) {
3869                 p -= grid_frames / 2;
3870         }
3871
3872         return snap_frame_to_frame (p);
3873 }
3874
3875 /** Called when the selection has been cleared in any MidiRegionView.
3876  *  @param rv MidiRegionView that the selection was cleared in.
3877  */
3878 void
3879 MidiRegionView::selection_cleared (MidiRegionView* rv)
3880 {
3881         if (rv == this) {
3882                 return;
3883         }
3884
3885         /* Clear our selection in sympathy; but don't signal the fact */
3886         clear_selection (false);
3887 }
3888
3889 void
3890 MidiRegionView::note_button_release ()
3891 {
3892         _note_player.reset();
3893 }
3894
3895 ChannelMode
3896 MidiRegionView::get_channel_mode () const
3897 {
3898         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
3899         return rtav->midi_track()->get_playback_channel_mode();
3900 }
3901
3902 uint16_t
3903 MidiRegionView::get_selected_channels () const
3904 {
3905         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
3906         return rtav->midi_track()->get_playback_channel_mask();
3907 }
3908
3909
3910 Evoral::MusicalTime
3911 MidiRegionView::get_grid_beats(framepos_t pos) const
3912 {
3913         PublicEditor&       editor  = trackview.editor();
3914         bool                success = false;
3915         Evoral::MusicalTime beats   = editor.get_grid_type_as_beats(success, pos);
3916         if (!success) {
3917                 beats = Evoral::MusicalTime(1);
3918         }
3919         return beats;
3920 }