Add API allowing plugin preset load to affect automation
[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_playlist.h"
37 #include "ardour/midi_region.h"
38 #include "ardour/midi_source.h"
39 #include "ardour/midi_track.h"
40 #include "ardour/operations.h"
41 #include "ardour/session.h"
42
43 #include "evoral/Parameter.hpp"
44 #include "evoral/Event.hpp"
45 #include "evoral/Control.hpp"
46 #include "evoral/midi_util.h"
47
48 #include "canvas/debug.h"
49 #include "canvas/text.h"
50
51 #include "automation_region_view.h"
52 #include "automation_time_axis.h"
53 #include "control_point.h"
54 #include "debug.h"
55 #include "editor.h"
56 #include "editor_drag.h"
57 #include "ghostregion.h"
58 #include "gui_thread.h"
59 #include "item_counts.h"
60 #include "keyboard.h"
61 #include "midi_channel_dialog.h"
62 #include "midi_cut_buffer.h"
63 #include "midi_list_editor.h"
64 #include "midi_region_view.h"
65 #include "midi_streamview.h"
66 #include "midi_time_axis.h"
67 #include "midi_util.h"
68 #include "midi_velocity_dialog.h"
69 #include "mouse_cursors.h"
70 #include "note_player.h"
71 #include "paste_context.h"
72 #include "public_editor.h"
73 #include "route_time_axis.h"
74 #include "rgb_macros.h"
75 #include "selection.h"
76 #include "streamview.h"
77 #include "patch_change_dialog.h"
78 #include "verbose_cursor.h"
79 #include "note.h"
80 #include "hit.h"
81 #include "patch_change.h"
82 #include "sys_ex.h"
83 #include "ui_config.h"
84
85 #include "pbd/i18n.h"
86
87 using namespace ARDOUR;
88 using namespace PBD;
89 using namespace Editing;
90 using namespace std;
91 using Gtkmm2ext::Keyboard;
92
93 #define MIDI_BP_ZERO ((Config->get_first_midi_bank_is_zero())?0:1)
94
95 MidiRegionView::MidiRegionView (ArdourCanvas::Container*      parent,
96                                 RouteTimeAxisView&            tv,
97                                 boost::shared_ptr<MidiRegion> r,
98                                 double                        spu,
99                                 uint32_t                      basic_color)
100         : RegionView (parent, tv, r, spu, basic_color)
101         , _current_range_min(0)
102         , _current_range_max(0)
103         , _region_relative_time_converter(r->session().tempo_map(), r->position())
104         , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start())
105         , _region_relative_time_converter_double(r->session().tempo_map(), r->position())
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         , _mouse_state(None)
115         , _pressed_button(0)
116         , _optimization_iterator (_events.end())
117         , _list_editor (0)
118         , _no_sound_notes (false)
119         , _last_display_zoom (0)
120         , _last_event_x (0)
121         , _last_event_y (0)
122         , _grabbed_keyboard (false)
123         , _entered (false)
124         , _entered_note (0)
125         , _mouse_changed_selection (false)
126 {
127         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
128
129         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
130         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
131
132         _note_group->raise_to_top();
133         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
134
135         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
136         connect_to_diskstream ();
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         , _region_relative_time_converter_double(r->session().tempo_map(), r->position())
152         , _active_notes(0)
153         , _note_group (new ArdourCanvas::Container (group))
154         , _note_diff_command (0)
155         , _ghost_note(0)
156         , _step_edit_cursor (0)
157         , _step_edit_cursor_width (1.0)
158         , _step_edit_cursor_position (0.0)
159         , _channel_selection_scoped_note (0)
160         , _mouse_state(None)
161         , _pressed_button(0)
162         , _optimization_iterator (_events.end())
163         , _list_editor (0)
164         , _no_sound_notes (false)
165         , _last_display_zoom (0)
166         , _last_event_x (0)
167         , _last_event_y (0)
168         , _grabbed_keyboard (false)
169         , _entered (false)
170         , _entered_note (0)
171         , _mouse_changed_selection (false)
172 {
173         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
174
175         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
176         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
177
178         _note_group->raise_to_top();
179
180         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
181
182         connect_to_diskstream ();
183 }
184
185 void
186 MidiRegionView::parameter_changed (std::string const & p)
187 {
188         if (p == "display-first-midi-bank-as-zero") {
189                 if (_enable_display) {
190                         redisplay_model();
191                 }
192         } else if (p == "color-regions-using-track-color") {
193                 set_colors ();
194         }
195 }
196
197 MidiRegionView::MidiRegionView (const MidiRegionView& other)
198         : sigc::trackable(other)
199         , RegionView (other)
200         , _current_range_min(0)
201         , _current_range_max(0)
202         , _region_relative_time_converter(other.region_relative_time_converter())
203         , _source_relative_time_converter(other.source_relative_time_converter())
204         , _region_relative_time_converter_double(other.region_relative_time_converter_double())
205         , _active_notes(0)
206         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
207         , _note_diff_command (0)
208         , _ghost_note(0)
209         , _step_edit_cursor (0)
210         , _step_edit_cursor_width (1.0)
211         , _step_edit_cursor_position (0.0)
212         , _channel_selection_scoped_note (0)
213         , _mouse_state(None)
214         , _pressed_button(0)
215         , _optimization_iterator (_events.end())
216         , _list_editor (0)
217         , _no_sound_notes (false)
218         , _last_display_zoom (0)
219         , _last_event_x (0)
220         , _last_event_y (0)
221         , _grabbed_keyboard (false)
222         , _entered (false)
223         , _entered_note (0)
224         , _mouse_changed_selection (false)
225 {
226         init (false);
227 }
228
229 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
230         : RegionView (other, boost::shared_ptr<Region> (region))
231         , _current_range_min(0)
232         , _current_range_max(0)
233         , _region_relative_time_converter(other.region_relative_time_converter())
234         , _source_relative_time_converter(other.source_relative_time_converter())
235         , _region_relative_time_converter_double(other.region_relative_time_converter_double())
236         , _active_notes(0)
237         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
238         , _note_diff_command (0)
239         , _ghost_note(0)
240         , _step_edit_cursor (0)
241         , _step_edit_cursor_width (1.0)
242         , _step_edit_cursor_position (0.0)
243         , _channel_selection_scoped_note (0)
244         , _mouse_state(None)
245         , _pressed_button(0)
246         , _optimization_iterator (_events.end())
247         , _list_editor (0)
248         , _no_sound_notes (false)
249         , _last_display_zoom (0)
250         , _last_event_x (0)
251         , _last_event_y (0)
252         , _grabbed_keyboard (false)
253         , _entered (false)
254         , _entered_note (0)
255         , _mouse_changed_selection (false)
256 {
257         init (true);
258 }
259
260 void
261 MidiRegionView::init (bool wfd)
262 {
263         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
264
265         if (wfd) {
266                 Glib::Threads::Mutex::Lock lm(midi_region()->midi_source(0)->mutex());
267                 midi_region()->midi_source(0)->load_model(lm);
268         }
269
270         _model = midi_region()->midi_source(0)->model();
271         _enable_display = false;
272         fill_color_name = "midi frame base";
273
274         RegionView::init (false);
275
276         //set_height (trackview.current_height());
277
278         region_muted ();
279         region_sync_changed ();
280         region_resized (ARDOUR::bounds_change);
281         //region_locked ();
282
283         set_colors ();
284
285         _enable_display = true;
286         if (_model) {
287                 if (wfd) {
288                         display_model (_model);
289                 }
290         }
291
292         reset_width_dependent_items (_pixel_width);
293
294         group->raise_to_top();
295
296         midi_view()->midi_track()->playback_filter().ChannelModeChanged.connect (_channel_mode_changed_connection, invalidator (*this),
297                                                                        boost::bind (&MidiRegionView::midi_channel_mode_changed, this),
298                                                                        gui_context ());
299
300         instrument_info().Changed.connect (_instrument_changed_connection, invalidator (*this),
301                                            boost::bind (&MidiRegionView::instrument_settings_changed, this), gui_context());
302
303         trackview.editor().SnapChanged.connect(snap_changed_connection, invalidator(*this),
304                                                boost::bind (&MidiRegionView::snap_changed, this),
305                                                gui_context());
306
307         trackview.editor().MouseModeChanged.connect(_mouse_mode_connection, invalidator (*this),
308                                                     boost::bind (&MidiRegionView::mouse_mode_changed, this),
309                                                     gui_context ());
310
311         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
312         UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &MidiRegionView::parameter_changed));
313         connect_to_diskstream ();
314 }
315
316 InstrumentInfo&
317 MidiRegionView::instrument_info () const
318 {
319         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
320         return route_ui->route()->instrument_info();
321 }
322
323 const boost::shared_ptr<ARDOUR::MidiRegion>
324 MidiRegionView::midi_region() const
325 {
326         return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region);
327 }
328
329 void
330 MidiRegionView::connect_to_diskstream ()
331 {
332         midi_view()->midi_track()->DataRecorded.connect(
333                 *this, invalidator(*this),
334                 boost::bind (&MidiRegionView::data_recorded, this, _1),
335                 gui_context());
336 }
337
338 bool
339 MidiRegionView::canvas_group_event(GdkEvent* ev)
340 {
341         if (in_destructor || _recregion) {
342                 return false;
343         }
344
345         if (!trackview.editor().internal_editing()) {
346                 // not in internal edit mode, so just act like a normal region
347                 return RegionView::canvas_group_event (ev);
348         }
349
350         bool r;
351
352         switch (ev->type) {
353         case GDK_ENTER_NOTIFY:
354                 _last_event_x = ev->crossing.x;
355                 _last_event_y = ev->crossing.y;
356                 enter_notify(&ev->crossing);
357                 // set entered_regionview (among other things)
358                 return RegionView::canvas_group_event (ev);
359
360         case GDK_LEAVE_NOTIFY:
361                 _last_event_x = ev->crossing.x;
362                 _last_event_y = ev->crossing.y;
363                 leave_notify(&ev->crossing);
364                 // reset entered_regionview (among other things)
365                 return RegionView::canvas_group_event (ev);
366
367         case GDK_SCROLL:
368                 if (scroll (&ev->scroll)) {
369                         return true;
370                 }
371                 break;
372
373         case GDK_KEY_PRESS:
374                 return key_press (&ev->key);
375
376         case GDK_KEY_RELEASE:
377                 return key_release (&ev->key);
378
379         case GDK_BUTTON_PRESS:
380                 return button_press (&ev->button);
381
382         case GDK_BUTTON_RELEASE:
383                 r = button_release (&ev->button);
384                 return r;
385
386         case GDK_MOTION_NOTIFY:
387                 _last_event_x = ev->motion.x;
388                 _last_event_y = ev->motion.y;
389                 return motion (&ev->motion);
390
391         default:
392                 break;
393         }
394
395         return RegionView::canvas_group_event (ev);
396 }
397
398 bool
399 MidiRegionView::enter_notify (GdkEventCrossing* ev)
400 {
401         enter_internal (ev->state);
402
403         _entered = true;
404         return false;
405 }
406
407 bool
408 MidiRegionView::leave_notify (GdkEventCrossing*)
409 {
410         leave_internal();
411
412         _entered = false;
413         return false;
414 }
415
416 void
417 MidiRegionView::mouse_mode_changed ()
418 {
419         // Adjust frame colour (become more transparent for internal tools)
420         set_frame_color();
421
422         if (_entered) {
423                 if (!trackview.editor().internal_editing()) {
424                         /* Switched out of internal editing mode while entered.
425                         Only necessary for leave as a mouse_mode_change over a region
426                         automatically triggers an enter event. */
427                         leave_internal();
428                 }
429                 else if (trackview.editor().current_mouse_mode() == MouseContent) {
430                         // hide cursor and ghost note after changing to internal edit mode
431                         remove_ghost_note ();
432
433                         /* XXX This is problematic as the function is executed for every region
434                         and only for one region _entered_note can be true. Still it's
435                         necessary as to hide the verbose cursor when we're changing from
436                         draw mode to internal edit mode. These lines are the reason why
437                         in some situations no verbose cursor is shown when we enter internal
438                         edit mode over a note. */
439                         if (!_entered_note) {
440                                 hide_verbose_cursor ();
441                         }
442                 }
443         }
444 }
445
446 void
447 MidiRegionView::enter_internal (uint32_t state)
448 {
449         if (trackview.editor().current_mouse_mode() == MouseDraw && _mouse_state != AddDragging) {
450                 // Show ghost note under pencil
451                 create_ghost_note(_last_event_x, _last_event_y, state);
452         }
453
454         if (!_selection.empty()) {
455                 // Grab keyboard for moving selected notes with arrow keys
456                 Keyboard::magic_widget_grab_focus();
457                 _grabbed_keyboard = true;
458         }
459
460         // Lower frame handles below notes so they don't steal events
461         if (frame_handle_start) {
462                 frame_handle_start->lower_to_bottom();
463         }
464         if (frame_handle_end) {
465                 frame_handle_end->lower_to_bottom();
466         }
467 }
468
469 void
470 MidiRegionView::leave_internal()
471 {
472         hide_verbose_cursor ();
473         remove_ghost_note ();
474         _entered_note = 0;
475
476         if (_grabbed_keyboard) {
477                 Keyboard::magic_widget_drop_focus();
478                 _grabbed_keyboard = false;
479         }
480
481         // Raise frame handles above notes so they catch events
482         if (frame_handle_start) {
483                 frame_handle_start->raise_to_top();
484         }
485         if (frame_handle_end) {
486                 frame_handle_end->raise_to_top();
487         }
488 }
489
490 bool
491 MidiRegionView::button_press (GdkEventButton* ev)
492 {
493         if (ev->button != 1) {
494                 return false;
495         }
496
497         Editor* editor = dynamic_cast<Editor *> (&trackview.editor());
498         MouseMode m = editor->current_mouse_mode();
499
500         if (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
501                 _press_cursor_ctx = CursorContext::create(*editor, editor->cursors()->midi_pencil);
502         }
503
504         if (_mouse_state != SelectTouchDragging) {
505
506                 _pressed_button = ev->button;
507
508                 if (m == MouseDraw || (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()))) {
509
510                         if (midi_view()->note_mode() == Percussive) {
511                                 editor->drags()->set (new HitCreateDrag (dynamic_cast<Editor *> (editor), group, this), (GdkEvent *) ev);
512                         } else {
513                                 editor->drags()->set (new NoteCreateDrag (dynamic_cast<Editor *> (editor), group, this), (GdkEvent *) ev);
514                         }
515
516                         _mouse_state = AddDragging;
517                         remove_ghost_note ();
518                         hide_verbose_cursor ();
519                 } else {
520                         _mouse_state = Pressed;
521                 }
522
523                 return true;
524         }
525
526         _pressed_button = ev->button;
527         _mouse_changed_selection = false;
528
529         return true;
530 }
531
532 bool
533 MidiRegionView::button_release (GdkEventButton* ev)
534 {
535         double event_x, event_y;
536
537         if (ev->button != 1) {
538                 return false;
539         }
540
541         event_x = ev->x;
542         event_y = ev->y;
543
544         group->canvas_to_item (event_x, event_y);
545         group->ungrab ();
546
547         PublicEditor& editor = trackview.editor ();
548
549         _press_cursor_ctx.reset();
550
551         switch (_mouse_state) {
552         case Pressed: // Clicked
553
554                 switch (editor.current_mouse_mode()) {
555                 case MouseRange:
556                         /* no motion occurred - simple click */
557                         clear_editor_note_selection ();
558                         _mouse_changed_selection = true;
559                         break;
560
561                 case MouseContent:
562                 case MouseTimeFX:
563                         {
564                                 _mouse_changed_selection = true;
565                                 clear_editor_note_selection ();
566
567                                 break;
568                         }
569                 case MouseDraw:
570                         break;
571
572                 default:
573                         break;
574                 }
575
576                 _mouse_state = None;
577                 break;
578
579         case AddDragging:
580                 /* Don't a ghost note when we added a note - wait until motion to avoid visual confusion.
581                    we don't want one when we were drag-selecting either. */
582         case SelectRectDragging:
583                 editor.drags()->end_grab ((GdkEvent *) ev);
584                 _mouse_state = None;
585                 break;
586
587
588         default:
589                 break;
590         }
591
592         if (_mouse_changed_selection) {
593                 trackview.editor().begin_reversible_selection_op (X_("Mouse Selection Change"));
594                 trackview.editor().commit_reversible_selection_op ();
595         }
596
597         return false;
598 }
599
600 bool
601 MidiRegionView::motion (GdkEventMotion* ev)
602 {
603         PublicEditor& editor = trackview.editor ();
604
605         if (!_entered_note) {
606
607                 if (_mouse_state == AddDragging) {
608                         if (_ghost_note) {
609                                 remove_ghost_note ();
610                         }
611
612                 } else if (!_ghost_note && editor.current_mouse_mode() == MouseContent &&
613                     Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()) &&
614                     _mouse_state != AddDragging) {
615
616                         create_ghost_note (ev->x, ev->y, ev->state);
617
618                 } else if (_ghost_note && editor.current_mouse_mode() == MouseContent &&
619                            Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
620
621                         update_ghost_note (ev->x, ev->y, ev->state);
622
623                 } else if (_ghost_note && editor.current_mouse_mode() == MouseContent) {
624
625                         remove_ghost_note ();
626                         hide_verbose_cursor ();
627
628                 } else if (editor.current_mouse_mode() == MouseDraw) {
629
630                         if (_ghost_note) {
631                                 update_ghost_note (ev->x, ev->y, ev->state);
632                         }
633                         else {
634                                 create_ghost_note (ev->x, ev->y, ev->state);
635                         }
636                 }
637         }
638
639         /* any motion immediately hides velocity text that may have been visible */
640
641         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
642                 (*i)->hide_velocity ();
643         }
644
645         switch (_mouse_state) {
646         case Pressed:
647
648                 if (_pressed_button == 1) {
649
650                         MouseMode m = editor.current_mouse_mode();
651
652                         if (m == MouseContent && !Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
653                                 editor.drags()->set (new MidiRubberbandSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
654                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
655                                         clear_editor_note_selection ();
656                                         _mouse_changed_selection = true;
657                                 }
658                                 _mouse_state = SelectRectDragging;
659                                 return true;
660                         } else if (m == MouseRange) {
661                                 editor.drags()->set (new MidiVerticalSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
662                                 _mouse_state = SelectVerticalDragging;
663                                 return true;
664                         }
665                 }
666
667                 return false;
668
669         case SelectRectDragging:
670         case SelectVerticalDragging:
671         case AddDragging:
672                 editor.drags()->motion_handler ((GdkEvent *) ev, false);
673                 break;
674
675         case SelectTouchDragging:
676                 return false;
677
678         default:
679                 break;
680
681         }
682
683         /* we may be dragging some non-note object (eg. patch-change, sysex)
684          */
685
686         return editor.drags()->motion_handler ((GdkEvent *) ev, false);
687 }
688
689
690 bool
691 MidiRegionView::scroll (GdkEventScroll* ev)
692 {
693         if (_selection.empty()) {
694                 return false;
695         }
696
697         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier) ||
698             Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
699                 /* XXX: bit of a hack; allow PrimaryModifier and TertiaryModifier scroll
700                  * through so that it still works for navigation.
701                 */
702                 return false;
703         }
704
705         hide_verbose_cursor ();
706
707         bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
708         Keyboard::ModifierMask mask_together(Keyboard::PrimaryModifier|Keyboard::TertiaryModifier);
709         bool together = Keyboard::modifier_state_contains (ev->state, mask_together);
710
711         if (ev->direction == GDK_SCROLL_UP) {
712                 change_velocities (true, fine, false, together);
713         } else if (ev->direction == GDK_SCROLL_DOWN) {
714                 change_velocities (false, fine, false, together);
715         } else {
716                 /* left, right: we don't use them */
717                 return false;
718         }
719
720         return true;
721 }
722
723 bool
724 MidiRegionView::key_press (GdkEventKey* ev)
725 {
726         /* since GTK bindings are generally activated on press, and since
727            detectable auto-repeat is the name of the game and only sends
728            repeated presses, carry out key actions at key press, not release.
729         */
730         bool unmodified = Keyboard::no_modifier_keys_pressed (ev);
731
732         if (unmodified && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
733
734                 if (_mouse_state != AddDragging) {
735                         _mouse_state = SelectTouchDragging;
736                 }
737
738                 return true;
739
740         } else if (ev->keyval == GDK_Escape && unmodified) {
741                 clear_editor_note_selection ();
742                 _mouse_state = None;
743
744         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
745
746                 bool start = (ev->keyval == GDK_comma);
747                 bool end = (ev->keyval == GDK_period);
748                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
749                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
750
751                 change_note_lengths (fine, shorter, Evoral::Beats(), start, end);
752
753                 return true;
754
755         } else if ((ev->keyval == GDK_BackSpace || ev->keyval == GDK_Delete) && unmodified) {
756
757                 if (_selection.empty()) {
758                         return false;
759                 }
760
761                 delete_selection();
762                 return true;
763
764         } else if (ev->keyval == GDK_Tab || ev->keyval == GDK_ISO_Left_Tab) {
765
766                 trackview.editor().begin_reversible_selection_op (X_("Select Adjacent Note"));
767
768                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
769                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
770                 } else {
771                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
772                 }
773
774                 trackview.editor().commit_reversible_selection_op();
775
776                 return true;
777
778         } else if (ev->keyval == GDK_Up) {
779
780                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
781                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
782                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
783
784                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
785                         change_velocities (true, fine, allow_smush, together);
786                 } else {
787                         transpose (true, fine, allow_smush);
788                 }
789                 return true;
790
791         } else if (ev->keyval == GDK_Down) {
792
793                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
794                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
795                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
796
797                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
798                         change_velocities (false, fine, allow_smush, together);
799                 } else {
800                         transpose (false, fine, allow_smush);
801                 }
802                 return true;
803
804         } else if (ev->keyval == GDK_Left) {
805
806                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
807                 nudge_notes (false, fine);
808                 return true;
809
810         } else if (ev->keyval == GDK_Right) {
811
812                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
813                 nudge_notes (true, fine);
814                 return true;
815
816         } else if (ev->keyval == GDK_c && unmodified) {
817                 channel_edit ();
818                 return true;
819
820         } else if (ev->keyval == GDK_v && unmodified) {
821                 velocity_edit ();
822                 return true;
823         }
824
825         return false;
826 }
827
828 bool
829 MidiRegionView::key_release (GdkEventKey* ev)
830 {
831         if ((_mouse_state == SelectTouchDragging) && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
832                 _mouse_state = None;
833                 return true;
834         }
835         return false;
836 }
837
838 void
839 MidiRegionView::channel_edit ()
840 {
841         if (_selection.empty()) {
842                 return;
843         }
844
845         /* pick a note somewhat at random (since Selection is a set<>) to
846          * provide the "current" channel for the dialog.
847          */
848
849         uint8_t current_channel = (*_selection.begin())->note()->channel ();
850         MidiChannelDialog channel_dialog (current_channel);
851         int ret = channel_dialog.run ();
852
853         switch (ret) {
854         case Gtk::RESPONSE_OK:
855                 break;
856         default:
857                 return;
858         }
859
860         uint8_t new_channel = channel_dialog.active_channel ();
861
862         start_note_diff_command (_("channel edit"));
863
864         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
865                 Selection::iterator next = i;
866                 ++next;
867                 change_note_channel (*i, new_channel);
868                 i = next;
869         }
870
871         apply_diff ();
872 }
873
874 void
875 MidiRegionView::velocity_edit ()
876 {
877         if (_selection.empty()) {
878                 return;
879         }
880
881         /* pick a note somewhat at random (since Selection is a set<>) to
882          * provide the "current" velocity for the dialog.
883          */
884
885         uint8_t current_velocity = (*_selection.begin())->note()->velocity ();
886         MidiVelocityDialog velocity_dialog (current_velocity);
887         int ret = velocity_dialog.run ();
888
889         switch (ret) {
890         case Gtk::RESPONSE_OK:
891                 break;
892         default:
893                 return;
894         }
895
896         uint8_t new_velocity = velocity_dialog.velocity ();
897
898         start_note_diff_command (_("velocity edit"));
899
900         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
901                 Selection::iterator next = i;
902                 ++next;
903                 change_note_velocity (*i, new_velocity, false);
904                 i = next;
905         }
906
907         apply_diff ();
908 }
909
910 void
911 MidiRegionView::show_list_editor ()
912 {
913         if (!_list_editor) {
914                 _list_editor = new MidiListEditor (trackview.session(), midi_region(), midi_view()->midi_track());
915         }
916         _list_editor->present ();
917 }
918
919 /** Add a note to the model, and the view, at a canvas (click) coordinate.
920  * \param t time in frames relative to the position of the region
921  * \param y vertical position in pixels
922  * \param length duration of the note in beats
923  * \param snap_t true to snap t to the grid, otherwise false.
924  */
925 void
926 MidiRegionView::create_note_at (framepos_t t, double y, Evoral::Beats length, uint32_t state, bool shift_snap)
927 {
928         if (length < 2 * DBL_EPSILON) {
929                 return;
930         }
931
932         MidiTimeAxisView* const mtv  = dynamic_cast<MidiTimeAxisView*>(&trackview);
933         MidiStreamView* const   view = mtv->midi_view();
934         boost::shared_ptr<MidiRegion> mr  = boost::dynamic_pointer_cast<MidiRegion> (_region);
935
936         if (!mr) {
937                 return;
938         }
939
940         // Start of note in frames relative to region start
941         const int32_t divisions = trackview.editor().get_grid_music_divisions (state);
942         Evoral::Beats beat_time = snap_frame_to_grid_underneath (t, divisions, shift_snap);
943
944         const double  note     = view->y_to_note(y);
945         const uint8_t chan     = mtv->get_channel_for_add();
946         const uint8_t velocity = get_velocity_for_add(beat_time);
947
948         const boost::shared_ptr<NoteType> new_note(
949                 new NoteType (chan, beat_time, length, (uint8_t)note, velocity));
950
951         if (_model->contains (new_note)) {
952                 return;
953         }
954
955         view->update_note_range(new_note->note());
956
957         start_note_diff_command(_("add note"));
958
959         clear_editor_note_selection ();
960         note_diff_add_note (new_note, true, false);
961
962         apply_diff();
963
964         play_midi_note (new_note);
965 }
966
967 void
968 MidiRegionView::clear_events ()
969 {
970         // clear selection without signaling
971         clear_selection_internal ();
972
973         MidiGhostRegion* gr;
974         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
975                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
976                         gr->clear_events();
977                 }
978         }
979
980
981         _note_group->clear (true);
982         _events.clear();
983         _patch_changes.clear();
984         _sys_exes.clear();
985         _optimization_iterator = _events.end();
986 }
987
988 void
989 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
990 {
991         _model = model;
992
993         content_connection.disconnect ();
994         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
995         /* Don't signal as nobody else needs to know until selection has been altered. */
996         clear_events();
997
998         if (_enable_display) {
999                 redisplay_model();
1000         }
1001 }
1002
1003 void
1004 MidiRegionView::start_note_diff_command (string name)
1005 {
1006         if (!_note_diff_command) {
1007                 trackview.editor().begin_reversible_command (name);
1008                 _note_diff_command = _model->new_note_diff_command (name);
1009         }
1010 }
1011
1012 void
1013 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
1014 {
1015         if (_note_diff_command) {
1016                 _note_diff_command->add (note);
1017         }
1018         if (selected) {
1019                 _marked_for_selection.insert(note);
1020         }
1021         if (show_velocity) {
1022                 _marked_for_velocity.insert(note);
1023         }
1024 }
1025
1026 void
1027 MidiRegionView::note_diff_remove_note (NoteBase* ev)
1028 {
1029         if (_note_diff_command && ev->note()) {
1030                 _note_diff_command->remove(ev->note());
1031         }
1032 }
1033
1034 void
1035 MidiRegionView::note_diff_add_change (NoteBase* ev,
1036                                       MidiModel::NoteDiffCommand::Property property,
1037                                       uint8_t val)
1038 {
1039         if (_note_diff_command) {
1040                 _note_diff_command->change (ev->note(), property, val);
1041         }
1042 }
1043
1044 void
1045 MidiRegionView::note_diff_add_change (NoteBase* ev,
1046                                       MidiModel::NoteDiffCommand::Property property,
1047                                       Evoral::Beats val)
1048 {
1049         if (_note_diff_command) {
1050                 _note_diff_command->change (ev->note(), property, val);
1051         }
1052 }
1053
1054 void
1055 MidiRegionView::apply_diff (bool as_subcommand, bool was_copy)
1056 {
1057         bool add_or_remove;
1058         bool commit = false;
1059
1060         if (!_note_diff_command) {
1061                 return;
1062         }
1063
1064         if (!was_copy && (add_or_remove = _note_diff_command->adds_or_removes())) {
1065                 // Mark all selected notes for selection when model reloads
1066                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1067                         _marked_for_selection.insert((*i)->note());
1068                 }
1069         }
1070
1071         midi_view()->midi_track()->midi_playlist()->region_edited (_region, _note_diff_command);
1072
1073         if (as_subcommand) {
1074                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
1075         } else {
1076                 _model->apply_command (*trackview.session(), _note_diff_command);
1077                 commit = true;
1078         }
1079
1080         _note_diff_command = 0;
1081
1082         if (add_or_remove) {
1083                 _marked_for_selection.clear();
1084         }
1085
1086         _marked_for_velocity.clear();
1087         if (commit) {
1088                 trackview.editor().commit_reversible_command ();
1089         }
1090 }
1091
1092 void
1093 MidiRegionView::abort_command()
1094 {
1095         delete _note_diff_command;
1096         _note_diff_command = 0;
1097         clear_editor_note_selection();
1098 }
1099
1100 NoteBase*
1101 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
1102 {
1103
1104         if (_optimization_iterator != _events.end()) {
1105                 ++_optimization_iterator;
1106         }
1107
1108         if (_optimization_iterator != _events.end() && _optimization_iterator->first == note) {
1109                 return _optimization_iterator->second;
1110         }
1111
1112         _optimization_iterator = _events.find (note);
1113         if (_optimization_iterator != _events.end()) {
1114                 return _optimization_iterator->second;
1115         }
1116
1117         return 0;
1118 }
1119
1120 /** This version finds any canvas note matching the supplied note. */
1121 NoteBase*
1122 MidiRegionView::find_canvas_note (Evoral::event_id_t id)
1123 {
1124         Events::iterator it;
1125
1126         for (it = _events.begin(); it != _events.end(); ++it) {
1127                 if (it->first->id() == id) {
1128                         return it->second;
1129                 }
1130         }
1131
1132         return 0;
1133 }
1134
1135 boost::shared_ptr<PatchChange>
1136 MidiRegionView::find_canvas_patch_change (MidiModel::PatchChangePtr p)
1137 {
1138         PatchChanges::const_iterator f = _patch_changes.find (p);
1139
1140         if (f != _patch_changes.end()) {
1141                 return f->second;
1142         }
1143
1144         return boost::shared_ptr<PatchChange>();
1145 }
1146
1147 boost::shared_ptr<SysEx>
1148 MidiRegionView::find_canvas_sys_ex (MidiModel::SysExPtr s)
1149 {
1150         SysExes::const_iterator f = _sys_exes.find (s);
1151
1152         if (f != _sys_exes.end()) {
1153                 return f->second;
1154         }
1155
1156         return boost::shared_ptr<SysEx>();
1157 }
1158
1159 void
1160 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::Beats>::NoteOperator op, uint8_t val, int chan_mask)
1161 {
1162         MidiModel::Notes notes;
1163         _model->get_notes (notes, op, val, chan_mask);
1164
1165         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1166                 NoteBase* cne = find_canvas_note (*n);
1167                 if (cne) {
1168                         e.insert (make_pair (*n, cne));
1169                 }
1170         }
1171 }
1172
1173 void
1174 MidiRegionView::redisplay_model()
1175 {
1176         if (_active_notes) {
1177                 // Currently recording
1178                 const framecnt_t zoom = trackview.editor().get_current_zoom();
1179                 if (zoom != _last_display_zoom) {
1180                         /* Update resolved canvas notes to reflect changes in zoom without
1181                            touching model.  Leave active notes (with length 0) alone since
1182                            they are being extended. */
1183                         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1184                                 if (i->second->note()->length() > 0) {
1185                                         update_note(i->second);
1186                                 }
1187                         }
1188                         _last_display_zoom = zoom;
1189                 }
1190                 return;
1191         }
1192
1193         if (!_model) {
1194                 return;
1195         }
1196
1197         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
1198                 _optimization_iterator->second->invalidate();
1199         }
1200
1201         bool empty_when_starting = _events.empty();
1202         _optimization_iterator = _events.begin();
1203         MidiModel::Notes missing_notes;
1204         Note* sus = NULL;
1205         Hit*  hit = NULL;
1206
1207         MidiModel::ReadLock lock(_model->read_lock());
1208         MidiModel::Notes& notes (_model->notes());
1209
1210         NoteBase* cne;
1211         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1212
1213                 boost::shared_ptr<NoteType> note (*n);
1214                 bool visible;
1215
1216                 if (note_in_region_range (note, visible)) {
1217                         if (!empty_when_starting && (cne = find_canvas_note (note)) != 0) {
1218                                 cne->validate ();
1219                                 if (visible) {
1220                                         cne->show ();
1221                                 } else {
1222                                         cne->hide ();
1223                                 }
1224                         } else {
1225                                 missing_notes.insert (note);
1226                         }
1227                 }
1228         }
1229
1230         if (!empty_when_starting) {
1231                 MidiModel::Notes::iterator f;
1232                 for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1233
1234                         NoteBase* cne = i->second;
1235
1236                         /* remove note items that are no longer valid */
1237                         if (!cne->valid()) {
1238
1239                                 for (vector<GhostRegion*>::iterator j = ghosts.begin(); j != ghosts.end(); ++j) {
1240                                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*j);
1241                                         if (gr) {
1242                                                 gr->remove_note (cne);
1243                                         }
1244                                 }
1245
1246                                 delete cne;
1247                                 i = _events.erase (i);
1248
1249                         } else {
1250                                 bool visible = cne->item()->visible();
1251
1252                                 if ((sus = dynamic_cast<Note*>(cne))) {
1253
1254                                         if (visible) {
1255                                                 update_sustained (sus);
1256                                         }
1257
1258                                 } else if ((hit = dynamic_cast<Hit*>(cne))) {
1259
1260                                         if (visible) {
1261                                                 update_hit (hit);
1262                                         }
1263
1264                                 }
1265                                 ++i;
1266                         }
1267                 }
1268         }
1269
1270         for (MidiModel::Notes::iterator n = missing_notes.begin(); n != missing_notes.end(); ++n) {
1271                 boost::shared_ptr<NoteType> note (*n);
1272                 NoteBase* cne;
1273                 bool visible;
1274
1275                 if (note_in_region_range (note, visible)) {
1276                         if (visible) {
1277                                 cne = add_note (note, true);
1278                         } else {
1279                                 cne = add_note (note, false);
1280                         }
1281                 } else {
1282                         cne = add_note (note, false);
1283                 }
1284
1285                 for (set<Evoral::event_id_t>::iterator it = _pending_note_selection.begin(); it != _pending_note_selection.end(); ++it) {
1286                         if ((*it) == note->id()) {
1287                                 add_to_selection (cne);
1288                         }
1289                 }
1290         }
1291
1292         for (vector<GhostRegion*>::iterator j = ghosts.begin(); j != ghosts.end(); ++j) {
1293                 MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*j);
1294                 if (gr && !gr->trackview.hidden()) {
1295                         gr->redisplay_model ();
1296                 }
1297         }
1298
1299         display_sysexes();
1300         display_patch_changes ();
1301
1302         _marked_for_selection.clear ();
1303         _marked_for_velocity.clear ();
1304         _pending_note_selection.clear ();
1305
1306 }
1307
1308 void
1309 MidiRegionView::display_patch_changes ()
1310 {
1311         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1312         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
1313
1314         for (uint8_t i = 0; i < 16; ++i) {
1315                 display_patch_changes_on_channel (i, chn_mask & (1 << i));
1316         }
1317 }
1318
1319 /** @param active_channel true to display patch changes fully, false to display
1320  * them `greyed-out' (as on an inactive channel)
1321  */
1322 void
1323 MidiRegionView::display_patch_changes_on_channel (uint8_t channel, bool active_channel)
1324 {
1325         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1326                 boost::shared_ptr<PatchChange> p;
1327
1328                 if ((*i)->channel() != channel) {
1329                         continue;
1330                 }
1331
1332                 if ((p = find_canvas_patch_change (*i)) != 0) {
1333
1334                         const framecnt_t region_frames = source_beats_to_region_frames ((*i)->time());
1335
1336                         if (region_frames < 0 || region_frames >= _region->length()) {
1337                                 p->hide();
1338                         } else {
1339                                 const double x = trackview.editor().sample_to_pixel (region_frames);
1340                                 const string patch_name = instrument_info().get_patch_name ((*i)->bank(), (*i)->program(), channel);
1341                                 p->canvas_item()->set_position (ArdourCanvas::Duple (x, 1.0));
1342                                 p->set_text (patch_name);
1343
1344                                 p->show();
1345                         }
1346
1347                 } else {
1348                         const string patch_name = instrument_info().get_patch_name ((*i)->bank(), (*i)->program(), channel);
1349                         add_canvas_patch_change (*i, patch_name, active_channel);
1350                 }
1351         }
1352 }
1353
1354 void
1355 MidiRegionView::display_sysexes()
1356 {
1357         bool have_periodic_system_messages = false;
1358         bool display_periodic_messages = true;
1359
1360         if (!UIConfiguration::instance().get_never_display_periodic_midi()) {
1361
1362                 for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1363                         if ((*i)->is_spp() || (*i)->is_mtc_quarter() || (*i)->is_mtc_full()) {
1364                                 have_periodic_system_messages = true;
1365                                 break;
1366                         }
1367                 }
1368
1369                 if (have_periodic_system_messages) {
1370                         double zoom = trackview.editor().get_current_zoom (); // frames per pixel
1371
1372                         /* get an approximate value for the number of samples per video frame */
1373
1374                         double video_frame = trackview.session()->frame_rate() * (1.0/30);
1375
1376                         /* if we are zoomed out beyond than the cutoff (i.e. more
1377                          * frames per pixel than frames per 4 video frames), don't
1378                          * show periodic sysex messages.
1379                          */
1380
1381                         if (zoom > (video_frame*4)) {
1382                                 display_periodic_messages = false;
1383                         }
1384                 }
1385         } else {
1386                 display_periodic_messages = false;
1387         }
1388
1389         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1390                 MidiModel::SysExPtr sysex_ptr = *i;
1391                 Evoral::Beats time = sysex_ptr->time();
1392
1393                 if ((*i)->is_spp() || (*i)->is_mtc_quarter() || (*i)->is_mtc_full()) {
1394                         if (!display_periodic_messages) {
1395                                 continue;
1396                         }
1397                 }
1398
1399                 ostringstream str;
1400                 str << hex;
1401                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1402                         str << int((*i)->buffer()[b]);
1403                         if (b != (*i)->size() -1) {
1404                                 str << " ";
1405                         }
1406                 }
1407                 string text = str.str();
1408
1409                 const double x = trackview.editor().sample_to_pixel(source_beats_to_region_frames(time));
1410
1411                 double height = midi_stream_view()->contents_height();
1412
1413                 // CAIROCANVAS: no longer passing *i (the sysex event) to the
1414                 // SysEx canvas object!!!
1415                 boost::shared_ptr<SysEx> sysex = find_canvas_sys_ex (sysex_ptr);
1416
1417                 if (!sysex) {
1418                         sysex = boost::shared_ptr<SysEx>(
1419                                 new SysEx (*this, _note_group, text, height, x, 1.0, sysex_ptr));
1420                         _sys_exes.insert (make_pair (sysex_ptr, sysex));
1421                 } else {
1422                         sysex->set_height (height);
1423                         sysex->item().set_position (ArdourCanvas::Duple (x, 1.0));
1424                 }
1425
1426                 // Show unless message is beyond the region bounds
1427                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1428                         sysex->hide();
1429                 } else {
1430                         sysex->show();
1431                 }
1432         }
1433 }
1434
1435 MidiRegionView::~MidiRegionView ()
1436 {
1437         in_destructor = true;
1438
1439         hide_verbose_cursor ();
1440
1441         delete _list_editor;
1442
1443         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1444
1445         if (_active_notes) {
1446                 end_write();
1447         }
1448         _entered_note = 0;
1449         clear_events ();
1450
1451         delete _note_group;
1452         delete _note_diff_command;
1453         delete _step_edit_cursor;
1454 }
1455
1456 void
1457 MidiRegionView::region_resized (const PropertyChange& what_changed)
1458 {
1459         RegionView::region_resized(what_changed); // calls RegionView::set_duration()
1460
1461         if (what_changed.contains (ARDOUR::Properties::position)) {
1462                 _region_relative_time_converter.set_origin_b(_region->position());
1463                 _region_relative_time_converter_double.set_origin_b(_region->position());
1464                 /* reset_width dependent_items() redisplays model */
1465
1466         }
1467
1468         if (what_changed.contains (ARDOUR::Properties::start) ||
1469             what_changed.contains (ARDOUR::Properties::position)) {
1470                 _source_relative_time_converter.set_origin_b (_region->position() - _region->start());
1471         }
1472         /* catch end and start trim so we can update the view*/
1473         if (!what_changed.contains (ARDOUR::Properties::start) &&
1474             what_changed.contains (ARDOUR::Properties::length)) {
1475                 enable_display (true);
1476         } else if (what_changed.contains (ARDOUR::Properties::start) &&
1477             what_changed.contains (ARDOUR::Properties::length)) {
1478                 enable_display (true);
1479         }
1480 }
1481
1482 void
1483 MidiRegionView::reset_width_dependent_items (double pixel_width)
1484 {
1485         RegionView::reset_width_dependent_items(pixel_width);
1486
1487         if (_enable_display) {
1488                 redisplay_model();
1489         }
1490
1491         bool hide_all = false;
1492         PatchChanges::iterator x = _patch_changes.begin();
1493         if (x != _patch_changes.end()) {
1494                 hide_all = x->second->width() >= _pixel_width;
1495         }
1496
1497         if (hide_all) {
1498                 for (; x != _patch_changes.end(); ++x) {
1499                         x->second->hide();
1500                 }
1501         }
1502
1503         move_step_edit_cursor (_step_edit_cursor_position);
1504         set_step_edit_cursor_width (_step_edit_cursor_width);
1505 }
1506
1507 void
1508 MidiRegionView::set_height (double height)
1509 {
1510         double old_height = _height;
1511         RegionView::set_height(height);
1512
1513         apply_note_range (midi_stream_view()->lowest_note(),
1514                           midi_stream_view()->highest_note(),
1515                           height != old_height);
1516
1517         if (name_text) {
1518                 name_text->raise_to_top();
1519         }
1520
1521         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1522                 (*x).second->set_height (midi_stream_view()->contents_height());
1523         }
1524
1525         if (_step_edit_cursor) {
1526                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
1527         }
1528 }
1529
1530
1531 /** Apply the current note range from the stream view
1532  * by repositioning/hiding notes as necessary
1533  */
1534 void
1535 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1536 {
1537         if (!_enable_display) {
1538                 return;
1539         }
1540
1541         if (!force && _current_range_min == min && _current_range_max == max) {
1542                 return;
1543         }
1544
1545         _current_range_min = min;
1546         _current_range_max = max;
1547
1548         redisplay_model ();
1549 }
1550
1551 GhostRegion*
1552 MidiRegionView::add_ghost (TimeAxisView& tv)
1553 {
1554         double unit_position = _region->position () / samples_per_pixel;
1555         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1556         MidiGhostRegion* ghost;
1557
1558         if (mtv && mtv->midi_view()) {
1559                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1560                    to allow having midi notes on top of note lines and waveforms.
1561                 */
1562                 ghost = new MidiGhostRegion (*this, *mtv->midi_view(), trackview, unit_position);
1563         } else {
1564                 ghost = new MidiGhostRegion (*this, tv, trackview, unit_position);
1565         }
1566
1567         ghost->set_colors ();
1568         ghost->set_height ();
1569         ghost->set_duration (_region->length() / samples_per_pixel);
1570
1571         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1572                 ghost->add_note(i->second);
1573         }
1574
1575         ghosts.push_back (ghost);
1576         enable_display (true);
1577         return ghost;
1578 }
1579
1580
1581 /** Begin tracking note state for successive calls to add_event
1582  */
1583 void
1584 MidiRegionView::begin_write()
1585 {
1586         if (_active_notes) {
1587                 delete[] _active_notes;
1588         }
1589         _active_notes = new Note*[128];
1590         for (unsigned i = 0; i < 128; ++i) {
1591                 _active_notes[i] = 0;
1592         }
1593 }
1594
1595
1596 /** Destroy note state for add_event
1597  */
1598 void
1599 MidiRegionView::end_write()
1600 {
1601         delete[] _active_notes;
1602         _active_notes = 0;
1603         _marked_for_selection.clear();
1604         _marked_for_velocity.clear();
1605 }
1606
1607
1608 /** Resolve an active MIDI note (while recording).
1609  */
1610 void
1611 MidiRegionView::resolve_note(uint8_t note, Evoral::Beats end_time)
1612 {
1613         if (midi_view()->note_mode() != Sustained) {
1614                 return;
1615         }
1616
1617         if (_active_notes && _active_notes[note]) {
1618                 /* Set note length so update_note() works.  Note this is a local note
1619                    for recording, not from a model, so we can safely mess with it. */
1620                 _active_notes[note]->note()->set_length(
1621                         end_time - _active_notes[note]->note()->time());
1622
1623                 /* End time is relative to the region being recorded. */
1624                 const framepos_t end_time_frames = region_beats_to_region_frames(end_time);
1625
1626                 _active_notes[note]->set_x1 (trackview.editor().sample_to_pixel(end_time_frames));
1627                 _active_notes[note]->set_outline_all ();
1628                 _active_notes[note] = 0;
1629         }
1630 }
1631
1632
1633 /** Extend active notes to rightmost edge of region (if length is changed)
1634  */
1635 void
1636 MidiRegionView::extend_active_notes()
1637 {
1638         if (!_active_notes) {
1639                 return;
1640         }
1641
1642         for (unsigned i = 0; i < 128; ++i) {
1643                 if (_active_notes[i]) {
1644                         _active_notes[i]->set_x1(
1645                                 trackview.editor().sample_to_pixel(_region->length()));
1646                 }
1647         }
1648 }
1649
1650 void
1651 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1652 {
1653         if (_no_sound_notes || !UIConfiguration::instance().get_sound_midi_notes()) {
1654                 return;
1655         }
1656
1657         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1658
1659         if (!route_ui || !route_ui->midi_track()) {
1660                 return;
1661         }
1662
1663         NotePlayer* np = new NotePlayer (route_ui->midi_track ());
1664         np->add (note);
1665         np->play ();
1666
1667         /* NotePlayer deletes itself */
1668 }
1669
1670 void
1671 MidiRegionView::start_playing_midi_note(boost::shared_ptr<NoteType> note)
1672 {
1673         const std::vector< boost::shared_ptr<NoteType> > notes(1, note);
1674         start_playing_midi_chord(notes);
1675 }
1676
1677 void
1678 MidiRegionView::start_playing_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1679 {
1680         if (_no_sound_notes || !UIConfiguration::instance().get_sound_midi_notes()) {
1681                 return;
1682         }
1683
1684         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1685
1686         if (!route_ui || !route_ui->midi_track()) {
1687                 return;
1688         }
1689
1690         NotePlayer* player = new NotePlayer (route_ui->midi_track());
1691
1692         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1693                 player->add (*n);
1694         }
1695
1696         player->play ();
1697 }
1698
1699
1700 bool
1701 MidiRegionView::note_in_region_range (const boost::shared_ptr<NoteType> note, bool& visible) const
1702 {
1703         const boost::shared_ptr<ARDOUR::MidiRegion> midi_reg = midi_region();
1704
1705         /* must compare double explicitly as Beats::operator< rounds to ppqn */
1706         const bool outside = (note->time().to_double() < midi_reg->start_beats() ||
1707                               note->time().to_double() >= midi_reg->start_beats() + midi_reg->length_beats());
1708
1709         visible = (note->note() >= _current_range_min) &&
1710                 (note->note() <= _current_range_max);
1711
1712         return !outside;
1713 }
1714
1715 void
1716 MidiRegionView::update_note (NoteBase* note, bool update_ghost_regions)
1717 {
1718         Note* sus = NULL;
1719         Hit*  hit = NULL;
1720         if ((sus = dynamic_cast<Note*>(note))) {
1721                 update_sustained(sus, update_ghost_regions);
1722         } else if ((hit = dynamic_cast<Hit*>(note))) {
1723                 update_hit(hit, update_ghost_regions);
1724         }
1725 }
1726
1727 /** Update a canvas note's size from its model note.
1728  *  @param ev Canvas note to update.
1729  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1730  */
1731 void
1732 MidiRegionView::update_sustained (Note* ev, bool update_ghost_regions)
1733 {
1734         TempoMap& map (trackview.session()->tempo_map());
1735         const boost::shared_ptr<ARDOUR::MidiRegion> mr = midi_region();
1736         boost::shared_ptr<NoteType> note = ev->note();
1737
1738         const double session_source_start = _region->quarter_note() - mr->start_beats();
1739         const framepos_t note_start_frames = map.frame_at_quarter_note (note->time().to_double() + session_source_start) - _region->position();
1740
1741         const double x0 = trackview.editor().sample_to_pixel (note_start_frames);
1742         double x1;
1743         const double y0 = 1 + floor(note_to_y(note->note()));
1744         double y1;
1745
1746         /* trim note display to not overlap the end of its region */
1747         if (note->length().to_double() > 0.0) {
1748                 double note_end_time = note->end_time().to_double();
1749
1750                 if (note_end_time > mr->start_beats() + mr->length_beats()) {
1751                         note_end_time = mr->start_beats() + mr->length_beats();
1752                 }
1753
1754                 const framepos_t note_end_frames = map.frame_at_quarter_note (session_source_start + note_end_time) - _region->position();
1755
1756                 x1 = std::max(1., trackview.editor().sample_to_pixel (note_end_frames)) - 1;
1757         } else {
1758                 x1 = std::max(1., trackview.editor().sample_to_pixel (_region->length())) - 1;
1759         }
1760
1761         y1 = y0 + std::max(1., floor(note_height()) - 1);
1762
1763         ev->set (ArdourCanvas::Rect (x0, y0, x1, y1));
1764
1765         if (!note->length()) {
1766                 if (_active_notes && note->note() < 128) {
1767                         Note* const old_rect = _active_notes[note->note()];
1768                         if (old_rect) {
1769                                 /* There is an active note on this key, so we have a stuck
1770                                    note.  Finish the old rectangle here. */
1771                                 old_rect->set_x1 (x1);
1772                                 old_rect->set_outline_all ();
1773                         }
1774                         _active_notes[note->note()] = ev;
1775                 }
1776                 /* outline all but right edge */
1777                 ev->set_outline_what (ArdourCanvas::Rectangle::What (
1778                                               ArdourCanvas::Rectangle::TOP|
1779                                               ArdourCanvas::Rectangle::LEFT|
1780                                               ArdourCanvas::Rectangle::BOTTOM));
1781         } else {
1782                 /* outline all edges */
1783                 ev->set_outline_all ();
1784         }
1785
1786         // Update color in case velocity has changed
1787         const uint32_t base_col = ev->base_color();
1788         ev->set_fill_color(base_col);
1789         ev->set_outline_color(ev->calculate_outline(base_col, ev->selected()));
1790
1791 }
1792
1793 void
1794 MidiRegionView::update_hit (Hit* ev, bool update_ghost_regions)
1795 {
1796         boost::shared_ptr<NoteType> note = ev->note();
1797
1798         const double note_time_qn = note->time().to_double() + (_region->quarter_note() - midi_region()->start_beats());
1799         const framepos_t note_start_frames = trackview.session()->tempo_map().frame_at_quarter_note (note_time_qn) - _region->position();
1800
1801         const double x = trackview.editor().sample_to_pixel(note_start_frames);
1802         const double diamond_size = std::max(1., floor(note_height()) - 2.);
1803         const double y = 1.5 + floor(note_to_y(note->note())) + diamond_size * .5;
1804
1805         // see DnD note in MidiRegionView::apply_note_range() above
1806         if (y <= 0 || y >= _height) {
1807                 ev->hide();
1808         } else {
1809                 ev->show();
1810         }
1811
1812         ev->set_position (ArdourCanvas::Duple (x, y));
1813         ev->set_height (diamond_size);
1814
1815         // Update color in case velocity has changed
1816         const uint32_t base_col = ev->base_color();
1817         ev->set_fill_color(base_col);
1818         ev->set_outline_color(ev->calculate_outline(base_col, ev->selected()));
1819
1820 }
1821
1822 /** Add a MIDI note to the view (with length).
1823  *
1824  * If in sustained mode, notes with length 0 will be considered active
1825  * notes, and resolve_note should be called when the corresponding note off
1826  * event arrives, to properly display the note.
1827  */
1828 NoteBase*
1829 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1830 {
1831         NoteBase* event = 0;
1832
1833         if (midi_view()->note_mode() == Sustained) {
1834
1835                 Note* ev_rect = new Note (*this, _note_group, note); // XXX may leak
1836
1837                 update_sustained (ev_rect);
1838
1839                 event = ev_rect;
1840
1841         } else if (midi_view()->note_mode() == Percussive) {
1842
1843                 const double diamond_size = std::max(1., floor(note_height()) - 2.);
1844
1845                 Hit* ev_diamond = new Hit (*this, _note_group, diamond_size, note); // XXX may leak
1846
1847                 update_hit (ev_diamond);
1848
1849                 event = ev_diamond;
1850
1851         } else {
1852                 event = 0;
1853         }
1854
1855         if (event) {
1856                 MidiGhostRegion* gr;
1857
1858                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1859                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1860                                 gr->add_note(event);
1861                         }
1862                 }
1863
1864                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1865                         note_selected(event, true);
1866                 }
1867
1868                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1869                         event->show_velocity();
1870                 }
1871
1872                 event->on_channel_selection_change (get_selected_channels());
1873                 _events.insert (make_pair (event->note(), event));
1874
1875                 if (visible) {
1876                         event->show();
1877                 } else {
1878                         event->hide ();
1879                 }
1880         }
1881
1882         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1883         MidiStreamView* const view = mtv->midi_view();
1884
1885         view->update_note_range (note->note());
1886         return event;
1887 }
1888
1889 void
1890 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1891                                Evoral::Beats pos, Evoral::Beats len)
1892 {
1893         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1894
1895         /* potentially extend region to hold new note */
1896
1897         framepos_t end_frame = source_beats_to_absolute_frames (new_note->end_time());
1898         framepos_t region_end = _region->last_frame();
1899
1900         if (end_frame > region_end) {
1901                 /* XX sets length in beats from audio space. make musical */
1902                 _region->set_length (end_frame - _region->position(), 0);
1903         }
1904
1905         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1906         MidiStreamView* const view = mtv->midi_view();
1907
1908         view->update_note_range(new_note->note());
1909
1910         _marked_for_selection.clear ();
1911
1912         start_note_diff_command (_("step add"));
1913
1914         clear_editor_note_selection ();
1915         note_diff_add_note (new_note, true, false);
1916
1917         apply_diff();
1918
1919         // last_step_edit_note = new_note;
1920 }
1921
1922 void
1923 MidiRegionView::step_sustain (Evoral::Beats beats)
1924 {
1925         change_note_lengths (false, false, beats, false, true);
1926 }
1927
1928 /** Add a new patch change flag to the canvas.
1929  * @param patch the patch change to add
1930  * @param the text to display in the flag
1931  * @param active_channel true to display the flag as on an active channel, false to grey it out for an inactive channel.
1932  */
1933 void
1934 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext, bool /*active_channel*/)
1935 {
1936         framecnt_t region_frames = source_beats_to_region_frames (patch->time());
1937         const double x = trackview.editor().sample_to_pixel (region_frames);
1938
1939         double const height = midi_stream_view()->contents_height();
1940
1941         // CAIROCANVAS: active_channel info removed from PatcChange constructor
1942         // so we need to do something more sophisticated to keep its color
1943         // appearance (MidiPatchChangeFill/MidiPatchChangeInactiveChannelFill)
1944         // up to date.
1945         boost::shared_ptr<PatchChange> patch_change = boost::shared_ptr<PatchChange>(
1946                 new PatchChange(*this, group,
1947                                 displaytext,
1948                                 height,
1949                                 x, 1.0,
1950                                 instrument_info(),
1951                                 patch,
1952                                 _patch_change_outline,
1953                                 _patch_change_fill)
1954                 );
1955
1956         if (patch_change->item().width() < _pixel_width) {
1957                 // Show unless patch change is beyond the region bounds
1958                 if (region_frames < 0 || region_frames >= _region->length()) {
1959                         patch_change->hide();
1960                 } else {
1961                         patch_change->show();
1962                 }
1963         } else {
1964                 patch_change->hide ();
1965         }
1966
1967         _patch_changes.insert (make_pair (patch, patch_change));
1968 }
1969
1970 void
1971 MidiRegionView::remove_canvas_patch_change (PatchChange* pc)
1972 {
1973         /* remove the canvas item */
1974         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1975                 if (x->second->patch() == pc->patch()) {
1976                         _patch_changes.erase (x);
1977                         break;
1978                 }
1979         }
1980 }
1981
1982 MIDI::Name::PatchPrimaryKey
1983 MidiRegionView::patch_change_to_patch_key (MidiModel::PatchChangePtr p)
1984 {
1985         return MIDI::Name::PatchPrimaryKey (p->program(), p->bank());
1986 }
1987
1988 /// Return true iff @p pc applies to the given time on the given channel.
1989 static bool
1990 patch_applies (const ARDOUR::MidiModel::constPatchChangePtr pc, Evoral::Beats time, uint8_t channel)
1991 {
1992         return pc->time() <= time && pc->channel() == channel;
1993 }
1994
1995 void
1996 MidiRegionView::get_patch_key_at (Evoral::Beats time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key) const
1997 {
1998         // The earliest event not before time
1999         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
2000
2001         // Go backwards until we find the latest PC for this channel, or the start
2002         while (i != _model->patch_changes().begin() &&
2003                (i == _model->patch_changes().end() ||
2004                 !patch_applies(*i, time, channel))) {
2005                 --i;
2006         }
2007
2008         if (i != _model->patch_changes().end() && patch_applies(*i, time, channel)) {
2009                 key.set_bank((*i)->bank());
2010                 key.set_program((*i)->program ());
2011         } else {
2012                 key.set_bank(0);
2013                 key.set_program(0);
2014         }
2015 }
2016
2017 void
2018 MidiRegionView::change_patch_change (PatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
2019 {
2020         string name = _("alter patch change");
2021         trackview.editor().begin_reversible_command (name);
2022
2023         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2024
2025         if (pc.patch()->program() != new_patch.program()) {
2026                 c->change_program (pc.patch (), new_patch.program());
2027         }
2028
2029         int const new_bank = new_patch.bank();
2030         if (pc.patch()->bank() != new_bank) {
2031                 c->change_bank (pc.patch (), new_bank);
2032         }
2033
2034         _model->apply_command (*trackview.session(), c);
2035         trackview.editor().commit_reversible_command ();
2036
2037         remove_canvas_patch_change (&pc);
2038         display_patch_changes ();
2039 }
2040
2041 void
2042 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::Beats> & new_change)
2043 {
2044         string name = _("alter patch change");
2045         trackview.editor().begin_reversible_command (name);
2046         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2047
2048         if (old_change->time() != new_change.time()) {
2049                 c->change_time (old_change, new_change.time());
2050         }
2051
2052         if (old_change->channel() != new_change.channel()) {
2053                 c->change_channel (old_change, new_change.channel());
2054         }
2055
2056         if (old_change->program() != new_change.program()) {
2057                 c->change_program (old_change, new_change.program());
2058         }
2059
2060         if (old_change->bank() != new_change.bank()) {
2061                 c->change_bank (old_change, new_change.bank());
2062         }
2063
2064         _model->apply_command (*trackview.session(), c);
2065         trackview.editor().commit_reversible_command ();
2066
2067         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
2068                 if (x->second->patch() == old_change) {
2069                         _patch_changes.erase (x);
2070                         break;
2071                 }
2072         }
2073
2074         display_patch_changes ();
2075 }
2076
2077 /** Add a patch change to the region.
2078  *  @param t Time in frames relative to region position
2079  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
2080  *  MidiTimeAxisView::get_channel_for_add())
2081  */
2082 void
2083 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::Beats> const & patch)
2084 {
2085         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2086         string name = _("add patch change");
2087
2088         trackview.editor().begin_reversible_command (name);
2089         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2090         c->add (MidiModel::PatchChangePtr (
2091                         new Evoral::PatchChange<Evoral::Beats> (
2092                                 absolute_frames_to_source_beats (_region->position() + t),
2093                                 mtv->get_channel_for_add(), patch.program(), patch.bank()
2094                                 )
2095                         )
2096                 );
2097
2098         _model->apply_command (*trackview.session(), c);
2099         trackview.editor().commit_reversible_command ();
2100
2101         display_patch_changes ();
2102 }
2103
2104 void
2105 MidiRegionView::move_patch_change (PatchChange& pc, Evoral::Beats t)
2106 {
2107         trackview.editor().begin_reversible_command (_("move patch change"));
2108         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
2109         c->change_time (pc.patch (), t);
2110         _model->apply_command (*trackview.session(), c);
2111         trackview.editor().commit_reversible_command ();
2112
2113         display_patch_changes ();
2114 }
2115
2116 void
2117 MidiRegionView::delete_patch_change (PatchChange* pc)
2118 {
2119         trackview.editor().begin_reversible_command (_("delete patch change"));
2120
2121         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
2122         c->remove (pc->patch ());
2123         _model->apply_command (*trackview.session(), c);
2124         trackview.editor().commit_reversible_command ();
2125
2126         remove_canvas_patch_change (pc);
2127         display_patch_changes ();
2128 }
2129
2130 void
2131 MidiRegionView::step_patch (PatchChange& patch, bool bank, int delta)
2132 {
2133         MIDI::Name::PatchPrimaryKey key = patch_change_to_patch_key(patch.patch());
2134         if (bank) {
2135                 key.set_bank(key.bank() + delta);
2136         } else {
2137                 key.set_program(key.program() + delta);
2138         }
2139         change_patch_change(patch, key);
2140 }
2141
2142 void
2143 MidiRegionView::note_deleted (NoteBase* cne)
2144 {
2145         if (_entered_note && cne == _entered_note) {
2146                 _entered_note = 0;
2147         }
2148
2149         if (_selection.empty()) {
2150                 return;
2151         }
2152
2153         _selection.erase (cne);
2154 }
2155
2156 void
2157 MidiRegionView::delete_selection()
2158 {
2159         if (_selection.empty()) {
2160                 return;
2161         }
2162
2163         if (trackview.editor().drags()->active()) {
2164                 return;
2165         }
2166
2167         start_note_diff_command (_("delete selection"));
2168
2169         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2170                 if ((*i)->selected()) {
2171                         _note_diff_command->remove((*i)->note());
2172                 }
2173         }
2174
2175         _selection.clear();
2176
2177         apply_diff ();
2178
2179         hide_verbose_cursor ();
2180 }
2181
2182 void
2183 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
2184 {
2185         start_note_diff_command (_("delete note"));
2186         _note_diff_command->remove (n);
2187         apply_diff ();
2188
2189         hide_verbose_cursor ();
2190 }
2191
2192 void
2193 MidiRegionView::clear_editor_note_selection ()
2194 {
2195         DEBUG_TRACE(DEBUG::Selection, "MRV::clear_editor_note_selection\n");
2196         PublicEditor& editor(trackview.editor());
2197         editor.get_selection().clear_midi_notes();
2198 }
2199
2200 void
2201 MidiRegionView::clear_selection ()
2202 {
2203         clear_selection_internal();
2204         PublicEditor& editor(trackview.editor());
2205         editor.get_selection().remove(this);
2206 }
2207
2208 void
2209 MidiRegionView::clear_selection_internal ()
2210 {
2211         DEBUG_TRACE(DEBUG::Selection, "MRV::clear_selection_internal\n");
2212
2213         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2214                 (*i)->set_selected(false);
2215                 (*i)->hide_velocity();
2216         }
2217         _selection.clear();
2218
2219         if (_entered) {
2220                 // Clearing selection entirely, ungrab keyboard
2221                 Keyboard::magic_widget_drop_focus();
2222                 _grabbed_keyboard = false;
2223         }
2224 }
2225
2226 void
2227 MidiRegionView::unique_select(NoteBase* ev)
2228 {
2229         clear_editor_note_selection();
2230         add_to_selection(ev);
2231 }
2232
2233 void
2234 MidiRegionView::select_all_notes ()
2235 {
2236         clear_editor_note_selection ();
2237
2238         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2239                 add_to_selection (i->second);
2240         }
2241 }
2242
2243 void
2244 MidiRegionView::select_range (framepos_t start, framepos_t end)
2245 {
2246         clear_editor_note_selection ();
2247
2248         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2249                 framepos_t t = source_beats_to_absolute_frames(i->first->time());
2250                 if (t >= start && t <= end) {
2251                         add_to_selection (i->second);
2252                 }
2253         }
2254 }
2255
2256 void
2257 MidiRegionView::invert_selection ()
2258 {
2259         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2260                 if (i->second->selected()) {
2261                         remove_from_selection(i->second);
2262                 } else {
2263                         add_to_selection (i->second);
2264                 }
2265         }
2266 }
2267
2268 /** Used for selection undo/redo.
2269     The requested notes most likely won't exist in the view until the next model redisplay.
2270 */
2271 void
2272 MidiRegionView::select_notes (list<Evoral::event_id_t> notes)
2273 {
2274         NoteBase* cne;
2275         list<Evoral::event_id_t>::iterator n;
2276
2277         for (n = notes.begin(); n != notes.end(); ++n) {
2278                 if ((cne = find_canvas_note(*n)) != 0) {
2279                         add_to_selection (cne);
2280                 } else {
2281                         _pending_note_selection.insert(*n);
2282                 }
2283         }
2284 }
2285
2286 void
2287 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
2288 {
2289         bool have_selection = !_selection.empty();
2290         uint8_t low_note = 127;
2291         uint8_t high_note = 0;
2292         MidiModel::Notes& notes (_model->notes());
2293         _optimization_iterator = _events.begin();
2294
2295         if (extend && !have_selection) {
2296                 extend = false;
2297         }
2298
2299         /* scan existing selection to get note range */
2300
2301         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2302                 if ((*i)->note()->note() < low_note) {
2303                         low_note = (*i)->note()->note();
2304                 }
2305                 if ((*i)->note()->note() > high_note) {
2306                         high_note = (*i)->note()->note();
2307                 }
2308         }
2309
2310         if (!add) {
2311                 clear_editor_note_selection ();
2312
2313                 if (!extend && (low_note == high_note) && (high_note == notenum)) {
2314                         /* only note previously selected is the one we are
2315                          * reselecting. treat this as cancelling the selection.
2316                          */
2317                         return;
2318                 }
2319         }
2320
2321         if (extend) {
2322                 low_note = min (low_note, notenum);
2323                 high_note = max (high_note, notenum);
2324         }
2325
2326         _no_sound_notes = true;
2327
2328         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2329
2330                 boost::shared_ptr<NoteType> note (*n);
2331                 NoteBase* cne;
2332                 bool select = false;
2333
2334                 if (((1 << note->channel()) & channel_mask) != 0) {
2335                         if (extend) {
2336                                 if ((note->note() >= low_note && note->note() <= high_note)) {
2337                                         select = true;
2338                                 }
2339                         } else if (note->note() == notenum) {
2340                                 select = true;
2341                         }
2342                 }
2343
2344                 if (select) {
2345                         if ((cne = find_canvas_note (note)) != 0) {
2346                                 // extend is false because we've taken care of it,
2347                                 // since it extends by time range, not pitch.
2348                                 note_selected (cne, add, false);
2349                         }
2350                 }
2351
2352                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
2353
2354         }
2355
2356         _no_sound_notes = false;
2357 }
2358
2359 void
2360 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
2361 {
2362         MidiModel::Notes& notes (_model->notes());
2363         _optimization_iterator = _events.begin();
2364
2365         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2366
2367                 boost::shared_ptr<NoteType> note (*n);
2368                 NoteBase* cne;
2369
2370                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
2371                         if ((cne = find_canvas_note (note)) != 0) {
2372                                 if (cne->selected()) {
2373                                         note_deselected (cne);
2374                                 } else {
2375                                         note_selected (cne, true, false);
2376                                 }
2377                         }
2378                 }
2379         }
2380 }
2381
2382 void
2383 MidiRegionView::note_selected (NoteBase* ev, bool add, bool extend)
2384 {
2385         if (!add) {
2386                 clear_editor_note_selection();
2387                 add_to_selection (ev);
2388         }
2389
2390         if (!extend) {
2391
2392                 if (!ev->selected()) {
2393                         add_to_selection (ev);
2394                 }
2395
2396         } else {
2397                 /* find end of latest note selected, select all between that and the start of "ev" */
2398
2399                 Evoral::Beats earliest = Evoral::MaxBeats;
2400                 Evoral::Beats latest   = Evoral::Beats();
2401
2402                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2403                         if ((*i)->note()->end_time() > latest) {
2404                                 latest = (*i)->note()->end_time();
2405                         }
2406                         if ((*i)->note()->time() < earliest) {
2407                                 earliest = (*i)->note()->time();
2408                         }
2409                 }
2410
2411                 if (ev->note()->end_time() > latest) {
2412                         latest = ev->note()->end_time();
2413                 }
2414
2415                 if (ev->note()->time() < earliest) {
2416                         earliest = ev->note()->time();
2417                 }
2418
2419                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2420
2421                         /* find notes entirely within OR spanning the earliest..latest range */
2422
2423                         if ((i->first->time() >= earliest && i->first->end_time() <= latest) ||
2424                             (i->first->time() <= earliest && i->first->end_time() >= latest)) {
2425                                 add_to_selection (i->second);
2426                         }
2427                 }
2428         }
2429 }
2430
2431 void
2432 MidiRegionView::note_deselected(NoteBase* ev)
2433 {
2434         remove_from_selection (ev);
2435 }
2436
2437 void
2438 MidiRegionView::update_drag_selection(framepos_t start, framepos_t end, double gy0, double gy1, bool extend)
2439 {
2440         PublicEditor& editor = trackview.editor();
2441
2442         // Convert to local coordinates
2443         const framepos_t p  = _region->position();
2444         const double     y  = midi_view()->y_position();
2445         const double     x0 = editor.sample_to_pixel(max((framepos_t)0, start - p));
2446         const double     x1 = editor.sample_to_pixel(max((framepos_t)0, end - p));
2447         const double     y0 = max(0.0, gy0 - y);
2448         const double     y1 = max(0.0, gy1 - y);
2449
2450         // TODO: Make this faster by storing the last updated selection rect, and only
2451         // adjusting things that are in the area that appears/disappeared.
2452         // We probably need a tree to be able to find events in O(log(n)) time.
2453
2454         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2455                 if (i->second->x0() < x1 && i->second->x1() > x0 && i->second->y0() < y1 && i->second->y1() > y0) {
2456                         // Rectangles intersect
2457                         if (!i->second->selected()) {
2458                                 add_to_selection (i->second);
2459                         }
2460                 } else if (i->second->selected() && !extend) {
2461                         // Rectangles do not intersect
2462                         remove_from_selection (i->second);
2463                 }
2464         }
2465
2466         typedef RouteTimeAxisView::AutomationTracks ATracks;
2467         typedef std::list<Selectable*>              Selectables;
2468
2469         /* Add control points to selection. */
2470         const ATracks& atracks = midi_view()->automation_tracks();
2471         Selectables    selectables;
2472         editor.get_selection().clear_points();
2473         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
2474                 a->second->get_selectables(start, end, gy0, gy1, selectables);
2475                 for (Selectables::const_iterator s = selectables.begin(); s != selectables.end(); ++s) {
2476                         ControlPoint* cp = dynamic_cast<ControlPoint*>(*s);
2477                         if (cp) {
2478                                 editor.get_selection().add(cp);
2479                         }
2480                 }
2481                 a->second->set_selected_points(editor.get_selection().points);
2482         }
2483 }
2484
2485 void
2486 MidiRegionView::update_vertical_drag_selection (double y1, double y2, bool extend)
2487 {
2488         if (y1 > y2) {
2489                 swap (y1, y2);
2490         }
2491
2492         // TODO: Make this faster by storing the last updated selection rect, and only
2493         // adjusting things that are in the area that appears/disappeared.
2494         // We probably need a tree to be able to find events in O(log(n)) time.
2495
2496         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2497                 if ((i->second->y1() >= y1 && i->second->y1() <= y2)) {
2498                         // within y- (note-) range
2499                         if (!i->second->selected()) {
2500                                 add_to_selection (i->second);
2501                         }
2502                 } else if (i->second->selected() && !extend) {
2503                         remove_from_selection (i->second);
2504                 }
2505         }
2506 }
2507
2508 void
2509 MidiRegionView::remove_from_selection (NoteBase* ev)
2510 {
2511         Selection::iterator i = _selection.find (ev);
2512
2513         if (i != _selection.end()) {
2514                 _selection.erase (i);
2515                 if (_selection.empty() && _grabbed_keyboard) {
2516                         // Ungrab keyboard
2517                         Keyboard::magic_widget_drop_focus();
2518                         _grabbed_keyboard = false;
2519                 }
2520         }
2521
2522         ev->set_selected (false);
2523         ev->hide_velocity ();
2524
2525         if (_selection.empty()) {
2526                 PublicEditor& editor (trackview.editor());
2527                 editor.get_selection().remove (this);
2528         }
2529 }
2530
2531 void
2532 MidiRegionView::add_to_selection (NoteBase* ev)
2533 {
2534         const bool selection_was_empty = _selection.empty();
2535
2536         if (_selection.insert (ev).second) {
2537                 ev->set_selected (true);
2538                 start_playing_midi_note ((ev)->note());
2539                 if (selection_was_empty && _entered) {
2540                         // Grab keyboard for moving notes with arrow keys
2541                         Keyboard::magic_widget_grab_focus();
2542                         _grabbed_keyboard = true;
2543                 }
2544         }
2545
2546         if (selection_was_empty) {
2547                 PublicEditor& editor (trackview.editor());
2548                 editor.get_selection().add (this);
2549         }
2550 }
2551
2552 Evoral::Beats
2553 MidiRegionView::earliest_in_selection ()
2554 {
2555         Evoral::Beats earliest = Evoral::MaxBeats;
2556
2557         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2558                 if ((*i)->note()->time() < earliest) {
2559                         earliest = (*i)->note()->time();
2560                 }
2561         }
2562
2563         return earliest;
2564 }
2565
2566 void
2567 MidiRegionView::move_selection(double dx_qn, double dy, double cumulative_dy)
2568 {
2569         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2570         Editor* editor = dynamic_cast<Editor*> (&trackview.editor());
2571         TempoMap& tmap (editor->session()->tempo_map());
2572         PossibleChord to_play;
2573         Evoral::Beats earliest = earliest_in_selection();
2574
2575         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2576                 NoteBase* n = *i;
2577                 if (n->note()->time() == earliest) {
2578                         to_play.push_back (n->note());
2579                 }
2580                 double const note_time_qn = session_relative_qn (n->note()->time().to_double());
2581                 double const dx = editor->sample_to_pixel_unrounded (tmap.frame_at_quarter_note (note_time_qn + dx_qn))
2582                         - n->item()->item_to_canvas (ArdourCanvas::Duple (n->x0(), 0)).x;
2583
2584                 (*i)->move_event(dx, dy);
2585
2586                 /* update length */
2587                 if (midi_view()->note_mode() == Sustained) {
2588                         Note* sus = dynamic_cast<Note*> (*i);
2589                         double const len_dx = editor->sample_to_pixel_unrounded (
2590                                 tmap.frame_at_quarter_note (note_time_qn + dx_qn + n->note()->length().to_double()));
2591
2592                         sus->set_x1 (n->item()->canvas_to_item (ArdourCanvas::Duple (len_dx, 0)).x);
2593                 }
2594         }
2595
2596         if (dy && !_selection.empty() && !_no_sound_notes && UIConfiguration::instance().get_sound_midi_notes()) {
2597
2598                 if (to_play.size() > 1) {
2599
2600                         PossibleChord shifted;
2601
2602                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2603                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2604                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2605                                 shifted.push_back (moved_note);
2606                         }
2607
2608                         start_playing_midi_chord (shifted);
2609
2610                 } else if (!to_play.empty()) {
2611
2612                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2613                         moved_note->set_note (moved_note->note() + cumulative_dy);
2614                         start_playing_midi_note (moved_note);
2615                 }
2616         }
2617 }
2618
2619 NoteBase*
2620 MidiRegionView::copy_selection (NoteBase* primary)
2621 {
2622         _copy_drag_events.clear ();
2623
2624         if (_selection.empty()) {
2625                 return 0;
2626         }
2627
2628         NoteBase* note;
2629         NoteBase* ret = 0;
2630
2631         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2632                 boost::shared_ptr<NoteType> g (new NoteType (*((*i)->note())));
2633                 if (midi_view()->note_mode() == Sustained) {
2634                         Note* n = new Note (*this, _note_group, g);
2635                         update_sustained (n, false);
2636                         note = n;
2637                 } else {
2638                         Hit* h = new Hit (*this, _note_group, 10, g);
2639                         update_hit (h, false);
2640                         note = h;
2641                 }
2642
2643                 if ((*i) == primary) {
2644                         ret = note;
2645                 }
2646
2647                 _copy_drag_events.push_back (note);
2648         }
2649
2650         return ret;
2651 }
2652
2653 void
2654 MidiRegionView::move_copies (double dx_qn, double dy, double cumulative_dy)
2655 {
2656         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2657         Editor* editor = dynamic_cast<Editor*> (&trackview.editor());
2658         TempoMap& tmap (editor->session()->tempo_map());
2659         PossibleChord to_play;
2660         Evoral::Beats earliest = earliest_in_selection();
2661
2662         for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end(); ++i) {
2663                 NoteBase* n = *i;
2664                 if (n->note()->time() == earliest) {
2665                         to_play.push_back (n->note());
2666                 }
2667                 double const note_time_qn = session_relative_qn (n->note()->time().to_double());
2668                 double const dx = editor->sample_to_pixel_unrounded (tmap.frame_at_quarter_note (note_time_qn + dx_qn))
2669                         - n->item()->item_to_canvas (ArdourCanvas::Duple (n->x0(), 0)).x;
2670
2671                 (*i)->move_event(dx, dy);
2672
2673                 if (midi_view()->note_mode() == Sustained) {
2674                         Note* sus = dynamic_cast<Note*> (*i);
2675                         double const len_dx = editor->sample_to_pixel_unrounded (
2676                                 tmap.frame_at_quarter_note (note_time_qn + dx_qn + n->note()->length().to_double()));
2677
2678                         sus->set_x1 (n->item()->canvas_to_item (ArdourCanvas::Duple (len_dx, 0)).x);
2679                 }
2680         }
2681
2682         if (dy && !_copy_drag_events.empty() && !_no_sound_notes && UIConfiguration::instance().get_sound_midi_notes()) {
2683
2684                 if (to_play.size() > 1) {
2685
2686                         PossibleChord shifted;
2687
2688                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2689                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2690                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2691                                 shifted.push_back (moved_note);
2692                         }
2693
2694                         start_playing_midi_chord (shifted);
2695
2696                 } else if (!to_play.empty()) {
2697
2698                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2699                         moved_note->set_note (moved_note->note() + cumulative_dy);
2700                         start_playing_midi_note (moved_note);
2701                 }
2702         }
2703 }
2704
2705 void
2706 MidiRegionView::note_dropped(NoteBase *, double d_qn, int8_t dnote, bool copy)
2707 {
2708         uint8_t lowest_note_in_selection  = 127;
2709         uint8_t highest_note_in_selection = 0;
2710         uint8_t highest_note_difference   = 0;
2711
2712         if (!copy) {
2713                 // find highest and lowest notes first
2714
2715                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2716                         uint8_t pitch = (*i)->note()->note();
2717                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2718                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2719                 }
2720
2721                 /*
2722                   cerr << "dnote: " << (int) dnote << endl;
2723                   cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2724                   << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2725                   cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2726                   << int(highest_note_in_selection) << endl;
2727                   cerr << "selection size: " << _selection.size() << endl;
2728                   cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2729                 */
2730
2731                 // Make sure the note pitch does not exceed the MIDI standard range
2732                 if (highest_note_in_selection + dnote > 127) {
2733                         highest_note_difference = highest_note_in_selection - 127;
2734                 }
2735
2736                 start_note_diff_command (_("move notes"));
2737
2738                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2739
2740                         Evoral::Beats new_time = Evoral::Beats ((*i)->note()->time().to_double() + d_qn);
2741
2742                         if (new_time < 0) {
2743                                 continue;
2744                         }
2745
2746                         note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2747
2748                         uint8_t original_pitch = (*i)->note()->note();
2749                         uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2750
2751                         // keep notes in standard midi range
2752                         clamp_to_0_127(new_pitch);
2753
2754                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2755                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2756
2757                         note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2758                 }
2759         } else {
2760
2761                 clear_editor_note_selection ();
2762
2763                 for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end(); ++i) {
2764                         uint8_t pitch = (*i)->note()->note();
2765                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2766                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2767                 }
2768
2769                 // Make sure the note pitch does not exceed the MIDI standard range
2770                 if (highest_note_in_selection + dnote > 127) {
2771                         highest_note_difference = highest_note_in_selection - 127;
2772                 }
2773
2774                 start_note_diff_command (_("copy notes"));
2775
2776                 for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end() ; ++i) {
2777
2778                         /* update time */
2779                         Evoral::Beats new_time = Evoral::Beats ((*i)->note()->time().to_double() + d_qn);
2780
2781                         if (new_time < 0) {
2782                                 continue;
2783                         }
2784
2785                         (*i)->note()->set_time (new_time);
2786
2787                         /* update pitch */
2788
2789                         uint8_t original_pitch = (*i)->note()->note();
2790                         uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2791
2792                         (*i)->note()->set_note (new_pitch);
2793
2794                         // keep notes in standard midi range
2795                         clamp_to_0_127(new_pitch);
2796
2797                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2798                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2799
2800                         note_diff_add_note ((*i)->note(), true);
2801
2802                         delete *i;
2803                 }
2804
2805                 _copy_drag_events.clear ();
2806         }
2807
2808         apply_diff (false, copy);
2809
2810         // care about notes being moved beyond the upper/lower bounds on the canvas
2811         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2812             highest_note_in_selection > midi_stream_view()->highest_note()) {
2813                 midi_stream_view()->set_note_range (MidiStreamView::ContentsRange);
2814         }
2815 }
2816
2817 /** @param x Pixel relative to the region position.
2818  *  @param ensure_snap defaults to false. true = snap always, ignoring snap mode and magnetic snap.
2819  *  Used for inverting the snap logic with key modifiers and snap delta calculation.
2820  *  @return Snapped frame relative to the region position.
2821  */
2822 framepos_t
2823 MidiRegionView::snap_pixel_to_sample(double x, bool ensure_snap)
2824 {
2825         PublicEditor& editor (trackview.editor());
2826         return snap_frame_to_frame (editor.pixel_to_sample (x), ensure_snap).frame;
2827 }
2828
2829 /** @param x Pixel relative to the region position.
2830  *  @param ensure_snap defaults to false. true = ignore magnetic snap and snap mode (used for snap delta calculation).
2831  *  @return Snapped pixel relative to the region position.
2832  */
2833 double
2834 MidiRegionView::snap_to_pixel(double x, bool ensure_snap)
2835 {
2836         return (double) trackview.editor().sample_to_pixel(snap_pixel_to_sample(x, ensure_snap));
2837 }
2838
2839 double
2840 MidiRegionView::get_position_pixels()
2841 {
2842         framepos_t region_frame = get_position();
2843         return trackview.editor().sample_to_pixel(region_frame);
2844 }
2845
2846 double
2847 MidiRegionView::get_end_position_pixels()
2848 {
2849         framepos_t frame = get_position() + get_duration ();
2850         return trackview.editor().sample_to_pixel(frame);
2851 }
2852
2853 framepos_t
2854 MidiRegionView::source_beats_to_absolute_frames(Evoral::Beats beats) const
2855 {
2856         /* the time converter will return the frame corresponding to `beats'
2857            relative to the start of the source. The start of the source
2858            is an implied position given by region->position - region->start
2859         */
2860         const framepos_t source_start = _region->position() - _region->start();
2861         return  source_start +  _source_relative_time_converter.to (beats);
2862 }
2863
2864 Evoral::Beats
2865 MidiRegionView::absolute_frames_to_source_beats(framepos_t frames) const
2866 {
2867         /* the `frames' argument needs to be converted into a frame count
2868            relative to the start of the source before being passed in to the
2869            converter.
2870         */
2871         const framepos_t source_start = _region->position() - _region->start();
2872         return  _source_relative_time_converter.from (frames - source_start);
2873 }
2874
2875 framepos_t
2876 MidiRegionView::region_beats_to_region_frames(Evoral::Beats beats) const
2877 {
2878         return _region_relative_time_converter.to(beats);
2879 }
2880
2881 Evoral::Beats
2882 MidiRegionView::region_frames_to_region_beats(framepos_t frames) const
2883 {
2884         return _region_relative_time_converter.from(frames);
2885 }
2886
2887 double
2888 MidiRegionView::region_frames_to_region_beats_double (framepos_t frames) const
2889 {
2890         return _region_relative_time_converter_double.from(frames);
2891 }
2892
2893 void
2894 MidiRegionView::begin_resizing (bool /*at_front*/)
2895 {
2896         _resize_data.clear();
2897
2898         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2899                 Note *note = dynamic_cast<Note*> (*i);
2900
2901                 // only insert CanvasNotes into the map
2902                 if (note) {
2903                         NoteResizeData *resize_data = new NoteResizeData();
2904                         resize_data->note = note;
2905
2906                         // create a new SimpleRect from the note which will be the resize preview
2907                         ArdourCanvas::Rectangle *resize_rect = new ArdourCanvas::Rectangle (_note_group,
2908                                                                                             ArdourCanvas::Rect (note->x0(), note->y0(), note->x0(), note->y1()));
2909
2910                         // calculate the colors: get the color settings
2911                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2912                                 UIConfiguration::instance().color ("midi note selected"),
2913                                 128);
2914
2915                         // make the resize preview notes more transparent and bright
2916                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2917
2918                         // calculate color based on note velocity
2919                         resize_rect->set_fill_color (UINT_INTERPOLATE(
2920                                 NoteBase::meter_style_fill_color(note->note()->velocity(), note->selected()),
2921                                 fill_color,
2922                                 0.85));
2923
2924                         resize_rect->set_outline_color (NoteBase::calculate_outline (
2925                                                                 UIConfiguration::instance().color ("midi note selected")));
2926
2927                         resize_data->resize_rect = resize_rect;
2928                         _resize_data.push_back(resize_data);
2929                 }
2930         }
2931 }
2932
2933 /** Update resizing notes while user drags.
2934  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2935  * @param at_front which end of the note (true == note on, false == note off)
2936  * @param delta_x change in mouse position since the start of the drag
2937  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2938  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2939  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2940  * as the \a primary note.
2941  * @param snap_delta snap offset of the primary note in pixels. used in SnapRelative SnapDelta mode.
2942  * @param with_snap true if snap is to be used to determine the position, false if no snap is to be used.
2943  */
2944 void
2945 MidiRegionView::update_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative, double snap_delta, bool with_snap)
2946 {
2947         TempoMap& tmap (trackview.session()->tempo_map());
2948         bool cursor_set = false;
2949         bool const ensure_snap = trackview.editor().snap_mode () != SnapMagnetic;
2950
2951         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2952                 ArdourCanvas::Rectangle* resize_rect = (*i)->resize_rect;
2953                 Note* canvas_note = (*i)->note;
2954                 double current_x;
2955
2956                 if (at_front) {
2957                         if (relative) {
2958                                 current_x = canvas_note->x0() + delta_x + snap_delta;
2959                         } else {
2960                                 current_x = primary->x0() + delta_x + snap_delta;
2961                         }
2962                 } else {
2963                         if (relative) {
2964                                 current_x = canvas_note->x1() + delta_x + snap_delta;
2965                         } else {
2966                                 current_x = primary->x1() + delta_x + snap_delta;
2967                         }
2968                 }
2969
2970                 if (current_x < 0) {
2971                         // This works even with snapping because RegionView::snap_frame_to_frame()
2972                         // snaps forward if the snapped sample is before the beginning of the region
2973                         current_x = 0;
2974                 }
2975                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
2976                         current_x = trackview.editor().sample_to_pixel(_region->length());
2977                 }
2978
2979                 if (at_front) {
2980                         if (with_snap) {
2981                                 resize_rect->set_x0 (snap_to_pixel (current_x, ensure_snap) - snap_delta);
2982                         } else {
2983                                 resize_rect->set_x0 (current_x - snap_delta);
2984                         }
2985                         resize_rect->set_x1 (canvas_note->x1());
2986                 } else {
2987                         if (with_snap) {
2988                                 resize_rect->set_x1 (snap_to_pixel (current_x, ensure_snap) - snap_delta);
2989                         } else {
2990                                 resize_rect->set_x1 (current_x - snap_delta);
2991                         }
2992                         resize_rect->set_x0 (canvas_note->x0());
2993                 }
2994
2995                 if (!cursor_set) {
2996                         /* Convert snap delta from pixels to beats. */
2997                         framepos_t snap_delta_samps = trackview.editor().pixel_to_sample (snap_delta);
2998                         double snap_delta_beats = 0.0;
2999                         int sign = 1;
3000
3001                         /* negative beat offsets aren't allowed */
3002                         if (snap_delta_samps > 0) {
3003                                 snap_delta_beats = region_frames_to_region_beats_double (snap_delta_samps);
3004                         } else if (snap_delta_samps < 0) {
3005                                 snap_delta_beats = region_frames_to_region_beats_double ( - snap_delta_samps);
3006                                 sign = -1;
3007                         }
3008
3009                         double  snapped_x;
3010                         int32_t divisions = 0;
3011
3012                         if (with_snap) {
3013                                 snapped_x = snap_pixel_to_sample (current_x, ensure_snap);
3014                                 divisions = trackview.editor().get_grid_music_divisions (0);
3015                         } else {
3016                                 snapped_x = trackview.editor ().pixel_to_sample (current_x);
3017                         }
3018                         const Evoral::Beats beats = Evoral::Beats (tmap.exact_beat_at_frame (snapped_x + midi_region()->position(), divisions)
3019                                                                      - midi_region()->beat()) + midi_region()->start_beats();
3020
3021                         Evoral::Beats len         = Evoral::Beats();
3022
3023                         if (at_front) {
3024                                 if (beats < canvas_note->note()->end_time()) {
3025                                         len = canvas_note->note()->time() - beats + (sign * snap_delta_beats);
3026                                         len += canvas_note->note()->length();
3027                                 }
3028                         } else {
3029                                 if (beats >= canvas_note->note()->time()) {
3030                                         len = beats - canvas_note->note()->time() - (sign * snap_delta_beats);
3031                                 }
3032                         }
3033
3034                         len = std::max(Evoral::Beats(1 / 512.0), len);
3035
3036                         char buf[16];
3037                         snprintf (buf, sizeof (buf), "%.3g beats", len.to_double());
3038                         show_verbose_cursor (buf, 0, 0);
3039
3040                         cursor_set = true;
3041                 }
3042
3043         }
3044 }
3045
3046
3047 /** Finish resizing notes when the user releases the mouse button.
3048  *  Parameters the same as for \a update_resizing().
3049  */
3050 void
3051 MidiRegionView::commit_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative, double snap_delta, bool with_snap)
3052 {
3053         _note_diff_command = _model->new_note_diff_command (_("resize notes"));
3054         TempoMap& tmap (trackview.session()->tempo_map());
3055
3056         /* XX why doesn't snap_pixel_to_sample() handle this properly? */
3057         bool const ensure_snap = trackview.editor().snap_mode () != SnapMagnetic;
3058
3059         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
3060                 Note*  canvas_note = (*i)->note;
3061                 ArdourCanvas::Rectangle*  resize_rect = (*i)->resize_rect;
3062
3063                 /* Get the new x position for this resize, which is in pixels relative
3064                  * to the region position.
3065                  */
3066
3067                 double current_x;
3068
3069                 if (at_front) {
3070                         if (relative) {
3071                                 current_x = canvas_note->x0() + delta_x + snap_delta;
3072                         } else {
3073                                 current_x = primary->x0() + delta_x + snap_delta;
3074                         }
3075                 } else {
3076                         if (relative) {
3077                                 current_x = canvas_note->x1() + delta_x + snap_delta;
3078                         } else {
3079                                 current_x = primary->x1() + delta_x + snap_delta;
3080                         }
3081                 }
3082
3083                 if (current_x < 0) {
3084                         current_x = 0;
3085                 }
3086                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
3087                         current_x = trackview.editor().sample_to_pixel(_region->length());
3088                 }
3089
3090                 /* Convert snap delta from pixels to beats with sign. */
3091                 framepos_t snap_delta_samps = trackview.editor().pixel_to_sample (snap_delta);
3092                 double snap_delta_beats = 0.0;
3093                 int sign = 1;
3094
3095                 if (snap_delta_samps > 0) {
3096                         snap_delta_beats = region_frames_to_region_beats_double (snap_delta_samps);
3097                 } else if (snap_delta_samps < 0) {
3098                         snap_delta_beats = region_frames_to_region_beats_double ( - snap_delta_samps);
3099                         sign = -1;
3100                 }
3101
3102                 uint32_t divisions = 0;
3103                 /* Convert the new x position to a frame within the source */
3104                 framepos_t current_fr;
3105                 if (with_snap) {
3106                         current_fr = snap_pixel_to_sample (current_x, ensure_snap);
3107                         divisions = trackview.editor().get_grid_music_divisions (0);
3108                 } else {
3109                         current_fr = trackview.editor().pixel_to_sample (current_x);
3110                 }
3111
3112                 /* and then to beats */
3113                 const double e_qaf = tmap.exact_qn_at_frame (current_fr + midi_region()->position(), divisions);
3114                 const double quarter_note_start = _region->quarter_note() - midi_region()->start_beats();
3115                 const Evoral::Beats x_beats = Evoral::Beats (e_qaf - quarter_note_start);
3116
3117                 if (at_front && x_beats < canvas_note->note()->end_time()) {
3118                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, x_beats - (sign * snap_delta_beats));
3119                         Evoral::Beats len = canvas_note->note()->time() - x_beats + (sign * snap_delta_beats);
3120                         len += canvas_note->note()->length();
3121
3122                         if (!!len) {
3123                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
3124                         }
3125                 }
3126
3127                 if (!at_front) {
3128                         Evoral::Beats len = std::max(Evoral::Beats(1 / 512.0),
3129                                                      x_beats - canvas_note->note()->time() - (sign * snap_delta_beats));
3130                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
3131                 }
3132
3133                 delete resize_rect;
3134                 delete (*i);
3135         }
3136
3137         _resize_data.clear();
3138         apply_diff(true);
3139 }
3140
3141 void
3142 MidiRegionView::abort_resizing ()
3143 {
3144         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
3145                 delete (*i)->resize_rect;
3146                 delete *i;
3147         }
3148
3149         _resize_data.clear ();
3150 }
3151
3152 void
3153 MidiRegionView::change_note_velocity(NoteBase* event, int8_t velocity, bool relative)
3154 {
3155         uint8_t new_velocity;
3156
3157         if (relative) {
3158                 new_velocity = event->note()->velocity() + velocity;
3159                 clamp_to_0_127(new_velocity);
3160         } else {
3161                 new_velocity = velocity;
3162         }
3163
3164         event->set_selected (event->selected()); // change color
3165
3166         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
3167 }
3168
3169 void
3170 MidiRegionView::change_note_note (NoteBase* event, int8_t note, bool relative)
3171 {
3172         uint8_t new_note;
3173
3174         if (relative) {
3175                 new_note = event->note()->note() + note;
3176         } else {
3177                 new_note = note;
3178         }
3179
3180         clamp_to_0_127 (new_note);
3181         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
3182 }
3183
3184 void
3185 MidiRegionView::trim_note (NoteBase* event, Evoral::Beats front_delta, Evoral::Beats end_delta)
3186 {
3187         bool change_start = false;
3188         bool change_length = false;
3189         Evoral::Beats new_start;
3190         Evoral::Beats new_length;
3191
3192         /* NOTE: the semantics of the two delta arguments are slightly subtle:
3193
3194            front_delta: if positive - move the start of the note later in time (shortening it)
3195            if negative - move the start of the note earlier in time (lengthening it)
3196
3197            end_delta:   if positive - move the end of the note later in time (lengthening it)
3198            if negative - move the end of the note earlier in time (shortening it)
3199         */
3200
3201         if (!!front_delta) {
3202                 if (front_delta < 0) {
3203
3204                         if (event->note()->time() < -front_delta) {
3205                                 new_start = Evoral::Beats();
3206                         } else {
3207                                 new_start = event->note()->time() + front_delta; // moves earlier
3208                         }
3209
3210                         /* start moved toward zero, so move the end point out to where it used to be.
3211                            Note that front_delta is negative, so this increases the length.
3212                         */
3213
3214                         new_length = event->note()->length() - front_delta;
3215                         change_start = true;
3216                         change_length = true;
3217
3218                 } else {
3219
3220                         Evoral::Beats new_pos = event->note()->time() + front_delta;
3221
3222                         if (new_pos < event->note()->end_time()) {
3223                                 new_start = event->note()->time() + front_delta;
3224                                 /* start moved toward the end, so move the end point back to where it used to be */
3225                                 new_length = event->note()->length() - front_delta;
3226                                 change_start = true;
3227                                 change_length = true;
3228                         }
3229                 }
3230
3231         }
3232
3233         if (!!end_delta) {
3234                 bool can_change = true;
3235                 if (end_delta < 0) {
3236                         if (event->note()->length() < -end_delta) {
3237                                 can_change = false;
3238                         }
3239                 }
3240
3241                 if (can_change) {
3242                         new_length = event->note()->length() + end_delta;
3243                         change_length = true;
3244                 }
3245         }
3246
3247         if (change_start) {
3248                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
3249         }
3250
3251         if (change_length) {
3252                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
3253         }
3254 }
3255
3256 void
3257 MidiRegionView::change_note_channel (NoteBase* event, int8_t chn, bool relative)
3258 {
3259         uint8_t new_channel;
3260
3261         if (relative) {
3262                 if (chn < 0.0) {
3263                         if (event->note()->channel() < -chn) {
3264                                 new_channel = 0;
3265                         } else {
3266                                 new_channel = event->note()->channel() + chn;
3267                         }
3268                 } else {
3269                         new_channel = event->note()->channel() + chn;
3270                 }
3271         } else {
3272                 new_channel = (uint8_t) chn;
3273         }
3274
3275         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, new_channel);
3276 }
3277
3278 void
3279 MidiRegionView::change_note_time (NoteBase* event, Evoral::Beats delta, bool relative)
3280 {
3281         Evoral::Beats new_time;
3282
3283         if (relative) {
3284                 if (delta < 0.0) {
3285                         if (event->note()->time() < -delta) {
3286                                 new_time = Evoral::Beats();
3287                         } else {
3288                                 new_time = event->note()->time() + delta;
3289                         }
3290                 } else {
3291                         new_time = event->note()->time() + delta;
3292                 }
3293         } else {
3294                 new_time = delta;
3295         }
3296
3297         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
3298 }
3299
3300 void
3301 MidiRegionView::change_note_length (NoteBase* event, Evoral::Beats t)
3302 {
3303         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
3304 }
3305
3306 void
3307 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush, bool all_together)
3308 {
3309         int8_t delta;
3310         int8_t value = 0;
3311
3312         if (_selection.empty()) {
3313                 return;
3314         }
3315
3316         if (fine) {
3317                 delta = 1;
3318         } else {
3319                 delta = 10;
3320         }
3321
3322         if (!up) {
3323                 delta = -delta;
3324         }
3325
3326         if (!allow_smush) {
3327                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3328                         if ((*i)->note()->velocity() < -delta || (*i)->note()->velocity() + delta > 127) {
3329                                 goto cursor_label;
3330                         }
3331                 }
3332         }
3333
3334         start_note_diff_command (_("change velocities"));
3335
3336         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
3337                 Selection::iterator next = i;
3338                 ++next;
3339
3340                 if (all_together) {
3341                         if (i == _selection.begin()) {
3342                                 change_note_velocity (*i, delta, true);
3343                                 value = (*i)->note()->velocity() + delta;
3344                         } else {
3345                                 change_note_velocity (*i, value, false);
3346                         }
3347
3348                 } else {
3349                         change_note_velocity (*i, delta, true);
3350                 }
3351
3352                 i = next;
3353         }
3354
3355         apply_diff();
3356
3357   cursor_label:
3358         if (!_selection.empty()) {
3359                 char buf[24];
3360                 snprintf (buf, sizeof (buf), "Vel %d",
3361                           (int) (*_selection.begin())->note()->velocity());
3362                 show_verbose_cursor (buf, 10, 10);
3363         }
3364 }
3365
3366
3367 void
3368 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
3369 {
3370         if (_selection.empty()) {
3371                 return;
3372         }
3373
3374         int8_t delta;
3375
3376         if (fine) {
3377                 delta = 1;
3378         } else {
3379                 delta = 12;
3380         }
3381
3382         if (!up) {
3383                 delta = -delta;
3384         }
3385
3386         if (!allow_smush) {
3387                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3388                         if (!up) {
3389                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
3390                                         return;
3391                                 }
3392                         } else {
3393                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
3394                                         return;
3395                                 }
3396                         }
3397                 }
3398         }
3399
3400         start_note_diff_command (_("transpose"));
3401
3402         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3403                 Selection::iterator next = i;
3404                 ++next;
3405                 change_note_note (*i, delta, true);
3406                 i = next;
3407         }
3408
3409         apply_diff ();
3410 }
3411
3412 void
3413 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::Beats delta, bool start, bool end)
3414 {
3415         if (!delta) {
3416                 if (fine) {
3417                         delta = Evoral::Beats(1.0/128.0);
3418                 } else {
3419                         /* grab the current grid distance */
3420                         delta = get_grid_beats(_region->position());
3421                 }
3422         }
3423
3424         if (shorter) {
3425                 delta = -delta;
3426         }
3427
3428         start_note_diff_command (_("change note lengths"));
3429
3430         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3431                 Selection::iterator next = i;
3432                 ++next;
3433
3434                 /* note the negation of the delta for start */
3435
3436                 trim_note (*i,
3437                            (start ? -delta : Evoral::Beats()),
3438                            (end   ? delta  : Evoral::Beats()));
3439                 i = next;
3440         }
3441
3442         apply_diff ();
3443
3444 }
3445
3446 void
3447 MidiRegionView::nudge_notes (bool forward, bool fine)
3448 {
3449         if (_selection.empty()) {
3450                 return;
3451         }
3452
3453         /* pick a note as the point along the timeline to get the nudge distance.
3454            its not necessarily the earliest note, so we may want to pull the notes out
3455            into a vector and sort before using the first one.
3456         */
3457
3458         const framepos_t ref_point = source_beats_to_absolute_frames ((*(_selection.begin()))->note()->time());
3459         Evoral::Beats    delta;
3460
3461         if (!fine) {
3462
3463                 /* non-fine, move by 1 bar regardless of snap */
3464                 delta = Evoral::Beats(trackview.session()->tempo_map().meter_at_frame (ref_point).divisions_per_bar());
3465
3466         } else if (trackview.editor().snap_mode() == Editing::SnapOff) {
3467
3468                 /* grid is off - use nudge distance */
3469
3470                 framepos_t       unused;
3471                 const framecnt_t distance = trackview.editor().get_nudge_distance (ref_point, unused);
3472                 delta = region_frames_to_region_beats (fabs ((double)distance));
3473
3474         } else {
3475
3476                 /* use grid */
3477
3478                 MusicFrame next_pos (ref_point, 0);
3479                 if (forward) {
3480                         if (max_framepos - 1 < next_pos.frame) {
3481                                 next_pos.frame += 1;
3482                         }
3483                 } else {
3484                         if (next_pos.frame == 0) {
3485                                 return;
3486                         }
3487                         next_pos.frame -= 1;
3488                 }
3489
3490                 trackview.editor().snap_to (next_pos, (forward ? RoundUpAlways : RoundDownAlways), false);
3491                 const framecnt_t distance = ref_point - next_pos.frame;
3492                 delta = region_frames_to_region_beats (fabs ((double)distance));
3493         }
3494
3495         if (!delta) {
3496                 return;
3497         }
3498
3499         if (!forward) {
3500                 delta = -delta;
3501         }
3502
3503         start_note_diff_command (_("nudge"));
3504
3505         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3506                 Selection::iterator next = i;
3507                 ++next;
3508                 change_note_time (*i, delta, true);
3509                 i = next;
3510         }
3511
3512         apply_diff ();
3513 }
3514
3515 void
3516 MidiRegionView::change_channel(uint8_t channel)
3517 {
3518         start_note_diff_command(_("change channel"));
3519         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3520                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
3521         }
3522
3523         apply_diff();
3524 }
3525
3526
3527 void
3528 MidiRegionView::note_entered(NoteBase* ev)
3529 {
3530         _entered_note = ev;
3531
3532         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3533
3534         if (_mouse_state == SelectTouchDragging) {
3535
3536                 note_selected (ev, true);
3537
3538         } else if (editor->current_mouse_mode() == MouseContent) {
3539
3540                 remove_ghost_note ();
3541                 show_verbose_cursor (ev->note ());
3542
3543         } else if (editor->current_mouse_mode() == MouseDraw) {
3544
3545                 remove_ghost_note ();
3546                 show_verbose_cursor (ev->note ());
3547         }
3548 }
3549
3550 void
3551 MidiRegionView::note_left (NoteBase*)
3552 {
3553         _entered_note = 0;
3554
3555         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3556                 (*i)->hide_velocity ();
3557         }
3558
3559         hide_verbose_cursor ();
3560 }
3561
3562 void
3563 MidiRegionView::patch_entered (PatchChange* p)
3564 {
3565         ostringstream s;
3566         s << _("Bank ") << (p->patch()->bank() + MIDI_BP_ZERO) << '\n'
3567           << instrument_info().get_patch_name_without (p->patch()->bank(), p->patch()->program(), p->patch()->channel()) << '\n'
3568           << _("Channel ") << ((int) p->patch()->channel() + 1);
3569         show_verbose_cursor (s.str(), 10, 20);
3570         p->item().grab_focus();
3571 }
3572
3573 void
3574 MidiRegionView::patch_left (PatchChange *)
3575 {
3576         hide_verbose_cursor ();
3577         /* focus will transfer back via the enter-notify event sent to this
3578          * midi region view.
3579          */
3580 }
3581
3582 void
3583 MidiRegionView::sysex_entered (SysEx* p)
3584 {
3585         // ostringstream s;
3586         // CAIROCANVAS
3587         // need a way to extract text from p->_flag->_text
3588         // s << p->text();
3589         // show_verbose_cursor (s.str(), 10, 20);
3590         p->item().grab_focus();
3591 }
3592
3593 void
3594 MidiRegionView::sysex_left (SysEx *)
3595 {
3596         hide_verbose_cursor ();
3597         /* focus will transfer back via the enter-notify event sent to this
3598          * midi region view.
3599          */
3600 }
3601
3602 void
3603 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
3604 {
3605         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3606         Editing::MouseMode mm = editor->current_mouse_mode();
3607         bool trimmable = (mm == MouseContent || mm == MouseTimeFX || mm == MouseDraw);
3608
3609         Editor::EnterContext* ctx = editor->get_enter_context(NoteItem);
3610         if (can_set_cursor && ctx) {
3611                 if (trimmable && x_fraction > 0.0 && x_fraction < 0.2) {
3612                         ctx->cursor_ctx->change(editor->cursors()->left_side_trim);
3613                 } else if (trimmable && x_fraction >= 0.8 && x_fraction < 1.0) {
3614                         ctx->cursor_ctx->change(editor->cursors()->right_side_trim);
3615                 } else {
3616                         ctx->cursor_ctx->change(editor->cursors()->grabber_note);
3617                 }
3618         }
3619 }
3620
3621 uint32_t
3622 MidiRegionView::get_fill_color() const
3623 {
3624         const std::string mod_name = (_dragging ? "dragging region" :
3625                                       trackview.editor().internal_editing() ? "editable region" :
3626                                       "midi frame base");
3627         if (_selected) {
3628                 return UIConfiguration::instance().color_mod ("selected region base", mod_name);
3629         } else if ((!UIConfiguration::instance().get_show_name_highlight() || high_enough_for_name) &&
3630                    !UIConfiguration::instance().get_color_regions_using_track_color()) {
3631                 return UIConfiguration::instance().color_mod ("midi frame base", mod_name);
3632         }
3633         return UIConfiguration::instance().color_mod (fill_color, mod_name);
3634 }
3635
3636 void
3637 MidiRegionView::midi_channel_mode_changed ()
3638 {
3639         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3640         uint16_t mask = mtv->midi_track()->get_playback_channel_mask();
3641         ChannelMode mode = mtv->midi_track()->get_playback_channel_mode ();
3642
3643         if (mode == ForceChannel) {
3644                 mask = 0xFFFF; // Show all notes as active (below)
3645         }
3646
3647         // Update notes for selection
3648         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3649                 i->second->on_channel_selection_change (mask);
3650         }
3651
3652         _patch_changes.clear ();
3653         display_patch_changes ();
3654 }
3655
3656 void
3657 MidiRegionView::instrument_settings_changed ()
3658 {
3659         redisplay_model();
3660 }
3661
3662 void
3663 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
3664 {
3665         if (_selection.empty()) {
3666                 return;
3667         }
3668
3669         PublicEditor& editor (trackview.editor());
3670
3671         switch (op) {
3672         case Delete:
3673                 /* XXX what to do ? */
3674                 break;
3675         case Cut:
3676         case Copy:
3677                 editor.get_cut_buffer().add (selection_as_cut_buffer());
3678                 break;
3679         default:
3680                 break;
3681         }
3682
3683         if (op != Copy) {
3684
3685                 start_note_diff_command();
3686
3687                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3688                         switch (op) {
3689                         case Copy:
3690                                 break;
3691                         case Delete:
3692                         case Cut:
3693                         case Clear:
3694                                 note_diff_remove_note (*i);
3695                                 break;
3696                         }
3697                 }
3698
3699                 apply_diff();
3700         }
3701 }
3702
3703 MidiCutBuffer*
3704 MidiRegionView::selection_as_cut_buffer () const
3705 {
3706         Notes notes;
3707
3708         for (Selection::const_iterator i = _selection.begin(); i != _selection.end(); ++i) {
3709                 NoteType* n = (*i)->note().get();
3710                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
3711         }
3712
3713         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
3714         cb->set (notes);
3715
3716         return cb;
3717 }
3718
3719 /** This method handles undo */
3720 bool
3721 MidiRegionView::paste (framepos_t pos, const ::Selection& selection, PasteContext& ctx, const int32_t sub_num)
3722 {
3723         bool commit = false;
3724         // Paste notes, if available
3725         MidiNoteSelection::const_iterator m = selection.midi_notes.get_nth(ctx.counts.n_notes());
3726         if (m != selection.midi_notes.end()) {
3727                 ctx.counts.increase_n_notes();
3728                 if (!(*m)->empty()) {
3729                         commit = true;
3730                 }
3731                 paste_internal(pos, ctx.count, ctx.times, **m);
3732         }
3733
3734         // Paste control points to automation children, if available
3735         typedef RouteTimeAxisView::AutomationTracks ATracks;
3736         const ATracks& atracks = midi_view()->automation_tracks();
3737         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
3738                 if (a->second->paste(pos, selection, ctx, sub_num)) {
3739                         if(!commit) {
3740                                 trackview.editor().begin_reversible_command (Operations::paste);
3741                         }
3742                         commit = true;
3743                 }
3744         }
3745
3746         if (commit) {
3747                 trackview.editor().commit_reversible_command ();
3748         }
3749         return true;
3750 }
3751
3752 /** This method handles undo */
3753 void
3754 MidiRegionView::paste_internal (framepos_t pos, unsigned paste_count, float times, const MidiCutBuffer& mcb)
3755 {
3756         if (mcb.empty()) {
3757                 return;
3758         }
3759
3760         start_note_diff_command (_("paste"));
3761
3762         const Evoral::Beats snap_beats    = get_grid_beats(pos);
3763         const Evoral::Beats first_time    = (*mcb.notes().begin())->time();
3764         const Evoral::Beats last_time     = (*mcb.notes().rbegin())->end_time();
3765         const Evoral::Beats duration      = last_time - first_time;
3766         const Evoral::Beats snap_duration = duration.snap_to(snap_beats);
3767         const Evoral::Beats paste_offset  = snap_duration * paste_count;
3768         const Evoral::Beats quarter_note     = absolute_frames_to_source_beats(pos) + paste_offset;
3769         Evoral::Beats       end_point     = Evoral::Beats();
3770
3771         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste data spans from %1 to %2 (%3) ; paste pos beats = %4 (based on %5 - %6)\n",
3772                                                        first_time,
3773                                                        last_time,
3774                                                        duration, pos, _region->position(),
3775                                                        quarter_note));
3776
3777         clear_editor_note_selection ();
3778
3779         for (int n = 0; n < (int) times; ++n) {
3780
3781                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3782
3783                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3784                         copied_note->set_time (quarter_note + copied_note->time() - first_time);
3785                         copied_note->set_id (Evoral::next_event_id());
3786
3787                         /* make all newly added notes selected */
3788
3789                         note_diff_add_note (copied_note, true);
3790                         end_point = copied_note->end_time();
3791                 }
3792         }
3793
3794         /* if we pasted past the current end of the region, extend the region */
3795
3796         framepos_t end_frame = source_beats_to_absolute_frames (end_point);
3797         framepos_t region_end = _region->position() + _region->length() - 1;
3798
3799         if (end_frame > region_end) {
3800
3801                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3802
3803                 _region->clear_changes ();
3804                 /* we probably need to get the snap modifier somehow to make this correct for non-musical use */
3805                 _region->set_length (end_frame - _region->position(), trackview.editor().get_grid_music_divisions (0));
3806                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3807         }
3808
3809         apply_diff (true);
3810 }
3811
3812 struct EventNoteTimeEarlyFirstComparator {
3813         bool operator() (NoteBase* a, NoteBase* b) {
3814                 return a->note()->time() < b->note()->time();
3815         }
3816 };
3817
3818 void
3819 MidiRegionView::goto_next_note (bool add_to_selection)
3820 {
3821         bool use_next = false;
3822
3823         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3824         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask();
3825         NoteBase* first_note = 0;
3826
3827         MidiModel::ReadLock lock(_model->read_lock());
3828         MidiModel::Notes& notes (_model->notes());
3829
3830         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
3831                 NoteBase* cne = 0;
3832                 if ((cne = find_canvas_note (*n))) {
3833
3834                         if (!first_note && (channel_mask & (1 << (*n)->channel()))) {
3835                                 first_note = cne;
3836                         }
3837
3838                         if (cne->selected()) {
3839                                 use_next = true;
3840                                 continue;
3841                         } else if (use_next) {
3842                                 if (channel_mask & (1 << (*n)->channel())) {
3843                                         if (!add_to_selection) {
3844                                                 unique_select (cne);
3845                                         } else {
3846                                                 note_selected (cne, true, false);
3847                                         }
3848
3849                                         return;
3850                                 }
3851                         }
3852                 }
3853         }
3854
3855         /* use the first one */
3856
3857         if (!_events.empty() && first_note) {
3858                 unique_select (first_note);
3859         }
3860 }
3861
3862 void
3863 MidiRegionView::goto_previous_note (bool add_to_selection)
3864 {
3865         bool use_next = false;
3866
3867         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3868         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask ();
3869         NoteBase* last_note = 0;
3870
3871         MidiModel::ReadLock lock(_model->read_lock());
3872         MidiModel::Notes& notes (_model->notes());
3873
3874         for (MidiModel::Notes::reverse_iterator n = notes.rbegin(); n != notes.rend(); ++n) {
3875                 NoteBase* cne = 0;
3876                 if ((cne = find_canvas_note (*n))) {
3877
3878                         if (!last_note && (channel_mask & (1 << (*n)->channel()))) {
3879                                 last_note = cne;
3880                         }
3881
3882                         if (cne->selected()) {
3883                                 use_next = true;
3884                                 continue;
3885
3886                         } else if (use_next) {
3887                                 if (channel_mask & (1 << (*n)->channel())) {
3888                                         if (!add_to_selection) {
3889                                                 unique_select (cne);
3890                                         } else {
3891                                                 note_selected (cne, true, false);
3892                                         }
3893
3894                                         return;
3895                                 }
3896                         }
3897                 }
3898         }
3899
3900         /* use the last one */
3901
3902         if (!_events.empty() && last_note) {
3903                 unique_select (last_note);
3904         }
3905 }
3906
3907 void
3908 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3909 {
3910         bool had_selected = false;
3911
3912         /* we previously time sorted events here, but Notes is a multiset sorted by time */
3913
3914         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3915                 if (i->second->selected()) {
3916                         selected.insert (i->first);
3917                         had_selected = true;
3918                 }
3919         }
3920
3921         if (allow_all_if_none_selected && !had_selected) {
3922                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3923                         selected.insert (i->first);
3924                 }
3925         }
3926 }
3927
3928 void
3929 MidiRegionView::update_ghost_note (double x, double y, uint32_t state)
3930 {
3931         x = std::max(0.0, x);
3932
3933         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3934
3935         _last_ghost_x = x;
3936         _last_ghost_y = y;
3937
3938         _note_group->canvas_to_item (x, y);
3939
3940         PublicEditor& editor = trackview.editor ();
3941
3942         framepos_t const unsnapped_frame = editor.pixel_to_sample (x);
3943
3944         const int32_t divisions = editor.get_grid_music_divisions (state);
3945         const bool shift_snap = midi_view()->note_mode() != Percussive;
3946         const Evoral::Beats snapped_beats = snap_frame_to_grid_underneath (unsnapped_frame, divisions, shift_snap);
3947
3948         /* prevent Percussive mode from displaying a ghost hit at region end */
3949         if (!shift_snap && snapped_beats >= midi_region()->start_beats() + midi_region()->length_beats()) {
3950                 _ghost_note->hide();
3951                 hide_verbose_cursor ();
3952                 return;
3953         }
3954
3955         /* ghost note may have been snapped before region */
3956         if (_ghost_note && snapped_beats.to_double() < 0.0) {
3957                 _ghost_note->hide();
3958                 return;
3959
3960         } else if (_ghost_note) {
3961                 _ghost_note->show();
3962         }
3963
3964         /* calculate time in beats relative to start of source */
3965         const Evoral::Beats length = get_grid_beats(unsnapped_frame + _region->position());
3966
3967         _ghost_note->note()->set_time (snapped_beats);
3968         _ghost_note->note()->set_length (length);
3969         _ghost_note->note()->set_note (y_to_note (y));
3970         _ghost_note->note()->set_channel (mtv->get_channel_for_add ());
3971         _ghost_note->note()->set_velocity (get_velocity_for_add (snapped_beats));
3972         /* the ghost note does not appear in ghost regions, so pass false in here */
3973         update_note (_ghost_note, false);
3974
3975         show_verbose_cursor (_ghost_note->note ());
3976 }
3977
3978 void
3979 MidiRegionView::create_ghost_note (double x, double y, uint32_t state)
3980 {
3981         remove_ghost_note ();
3982
3983         boost::shared_ptr<NoteType> g (new NoteType);
3984         if (midi_view()->note_mode() == Sustained) {
3985                 _ghost_note = new Note (*this, _note_group, g);
3986         } else {
3987                 _ghost_note = new Hit (*this, _note_group, 10, g);
3988         }
3989         _ghost_note->set_ignore_events (true);
3990         _ghost_note->set_outline_color (0x000000aa);
3991         update_ghost_note (x, y, state);
3992         _ghost_note->show ();
3993
3994         show_verbose_cursor (_ghost_note->note ());
3995 }
3996
3997 void
3998 MidiRegionView::remove_ghost_note ()
3999 {
4000         delete _ghost_note;
4001         _ghost_note = 0;
4002 }
4003
4004 void
4005 MidiRegionView::hide_verbose_cursor ()
4006 {
4007         trackview.editor().verbose_cursor()->hide ();
4008         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4009         if (mtv) {
4010                 mtv->set_note_highlight (NO_MIDI_NOTE);
4011         }
4012 }
4013
4014 void
4015 MidiRegionView::snap_changed ()
4016 {
4017         if (!_ghost_note) {
4018                 return;
4019         }
4020
4021         create_ghost_note (_last_ghost_x, _last_ghost_y, 0);
4022 }
4023
4024 void
4025 MidiRegionView::drop_down_keys ()
4026 {
4027         _mouse_state = None;
4028 }
4029
4030 void
4031 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
4032 {
4033         /* XXX: This is dead code.  What was it for? */
4034
4035         double note = y_to_note(y);
4036         Events e;
4037         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4038
4039         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
4040
4041         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
4042                 get_events (e, Evoral::Sequence<Evoral::Beats>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
4043         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
4044                 get_events (e, Evoral::Sequence<Evoral::Beats>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
4045         } else {
4046                 return;
4047         }
4048
4049         bool add_mrv_selection = false;
4050
4051         if (_selection.empty()) {
4052                 add_mrv_selection = true;
4053         }
4054
4055         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
4056                 if (_selection.insert (i->second).second) {
4057                         i->second->set_selected (true);
4058                 }
4059         }
4060
4061         if (add_mrv_selection) {
4062                 PublicEditor& editor (trackview.editor());
4063                 editor.get_selection().add (this);
4064         }
4065 }
4066
4067 void
4068 MidiRegionView::color_handler ()
4069 {
4070         RegionView::color_handler ();
4071
4072         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
4073         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
4074
4075         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
4076                 i->second->set_selected (i->second->selected()); // will change color
4077         }
4078
4079         /* XXX probably more to do here */
4080 }
4081
4082 void
4083 MidiRegionView::enable_display (bool yn)
4084 {
4085         RegionView::enable_display (yn);
4086 }
4087
4088 void
4089 MidiRegionView::show_step_edit_cursor (Evoral::Beats pos)
4090 {
4091         if (_step_edit_cursor == 0) {
4092                 ArdourCanvas::Item* const group = get_canvas_group();
4093
4094                 _step_edit_cursor = new ArdourCanvas::Rectangle (group);
4095                 _step_edit_cursor->set_y0 (0);
4096                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
4097                 _step_edit_cursor->set_fill_color (RGBA_TO_UINT (45,0,0,90));
4098                 _step_edit_cursor->set_outline_color (RGBA_TO_UINT (85,0,0,90));
4099         }
4100
4101         move_step_edit_cursor (pos);
4102         _step_edit_cursor->show ();
4103 }
4104
4105 void
4106 MidiRegionView::move_step_edit_cursor (Evoral::Beats pos)
4107 {
4108         _step_edit_cursor_position = pos;
4109
4110         if (_step_edit_cursor) {
4111                 double pixel = trackview.editor().sample_to_pixel (region_beats_to_region_frames (pos));
4112                 _step_edit_cursor->set_x0 (pixel);
4113                 set_step_edit_cursor_width (_step_edit_cursor_width);
4114         }
4115 }
4116
4117 void
4118 MidiRegionView::hide_step_edit_cursor ()
4119 {
4120         if (_step_edit_cursor) {
4121                 _step_edit_cursor->hide ();
4122         }
4123 }
4124
4125 void
4126 MidiRegionView::set_step_edit_cursor_width (Evoral::Beats beats)
4127 {
4128         _step_edit_cursor_width = beats;
4129
4130         if (_step_edit_cursor) {
4131                 _step_edit_cursor->set_x1 (_step_edit_cursor->x0() + trackview.editor().sample_to_pixel (
4132                                                    region_beats_to_region_frames (_step_edit_cursor_position + beats)
4133                                                    - region_beats_to_region_frames (_step_edit_cursor_position)));
4134         }
4135 }
4136
4137 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
4138  *  @param w Source that the data will end up in.
4139  */
4140 void
4141 MidiRegionView::data_recorded (boost::weak_ptr<MidiSource> w)
4142 {
4143         if (!_active_notes) {
4144                 /* we aren't actively being recorded to */
4145                 return;
4146         }
4147
4148         boost::shared_ptr<MidiSource> src = w.lock ();
4149         if (!src || src != midi_region()->midi_source()) {
4150                 /* recorded data was not destined for our source */
4151                 return;
4152         }
4153
4154         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
4155
4156         boost::shared_ptr<MidiBuffer> buf = mtv->midi_track()->get_gui_feed_buffer ();
4157
4158         framepos_t back = max_framepos;
4159
4160         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
4161                 const Evoral::Event<MidiBuffer::TimeType>& ev = *i;
4162
4163                 if (ev.is_channel_event()) {
4164                         if (get_channel_mode() == FilterChannels) {
4165                                 if (((uint16_t(1) << ev.channel()) & get_selected_channels()) == 0) {
4166                                         continue;
4167                                 }
4168                         }
4169                 }
4170
4171                 /* convert from session frames to source beats */
4172                 Evoral::Beats const time_beats = _source_relative_time_converter.from(
4173                         ev.time() - src->timeline_position() + _region->start());
4174
4175                 if (ev.type() == MIDI_CMD_NOTE_ON) {
4176                         boost::shared_ptr<NoteType> note (
4177                                 new NoteType (ev.channel(), time_beats, Evoral::Beats(), ev.note(), ev.velocity()));
4178
4179                         add_note (note, true);
4180
4181                         /* fix up our note range */
4182                         if (ev.note() < _current_range_min) {
4183                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
4184                         } else if (ev.note() > _current_range_max) {
4185                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
4186                         }
4187
4188                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
4189                         resolve_note (ev.note (), time_beats);
4190                 }
4191
4192                 back = ev.time ();
4193         }
4194
4195         midi_stream_view()->check_record_layers (region(), back);
4196 }
4197
4198 void
4199 MidiRegionView::trim_front_starting ()
4200 {
4201         /* We used to eparent the note group to the region view's parent, so that it didn't change.
4202            now we update it.
4203         */
4204 }
4205
4206 void
4207 MidiRegionView::trim_front_ending ()
4208 {
4209         if (_region->start() < 0) {
4210                 /* Trim drag made start time -ve; fix this */
4211                 midi_region()->fix_negative_start ();
4212         }
4213 }
4214
4215 void
4216 MidiRegionView::edit_patch_change (PatchChange* pc)
4217 {
4218         PatchChangeDialog d (&_source_relative_time_converter, trackview.session(), *pc->patch (), instrument_info(), Gtk::Stock::APPLY, true);
4219
4220         int response = d.run();
4221
4222         switch (response) {
4223         case Gtk::RESPONSE_ACCEPT:
4224                 break;
4225         case Gtk::RESPONSE_REJECT:
4226                 delete_patch_change (pc);
4227                 return;
4228         default:
4229                 return;
4230         }
4231
4232         change_patch_change (pc->patch(), d.patch ());
4233 }
4234
4235 void
4236 MidiRegionView::delete_sysex (SysEx* /*sysex*/)
4237 {
4238         // CAIROCANVAS
4239         // sysyex object doesn't have a pointer to a sysex event
4240         // MidiModel::SysExDiffCommand* c = _model->new_sysex_diff_command (_("delete sysex"));
4241         // c->remove (sysex->sysex());
4242         // _model->apply_command (*trackview.session(), c);
4243
4244         //_sys_exes.clear ();
4245         // display_sysexes();
4246 }
4247
4248 std::string
4249 MidiRegionView::get_note_name (boost::shared_ptr<NoteType> n, uint8_t note_value) const
4250 {
4251         using namespace MIDI::Name;
4252         std::string name;
4253
4254         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4255         if (mtv) {
4256                 boost::shared_ptr<MasterDeviceNames> device_names(mtv->get_device_names());
4257                 if (device_names) {
4258                         MIDI::Name::PatchPrimaryKey patch_key;
4259                         get_patch_key_at(n->time(), n->channel(), patch_key);
4260                         name = device_names->note_name(mtv->gui_property(X_("midnam-custom-device-mode")),
4261                                                        n->channel(),
4262                                                        patch_key.bank(),
4263                                                        patch_key.program(),
4264                                                        note_value);
4265                 }
4266         }
4267
4268         char buf[128];
4269         snprintf (buf, sizeof (buf), "%d %s\nCh %d Vel %d",
4270                   (int) note_value,
4271                   name.empty() ? ParameterDescriptor::midi_note_name (note_value).c_str() : name.c_str(),
4272                   (int) n->channel() + 1,
4273                   (int) n->velocity());
4274
4275         return buf;
4276 }
4277
4278 void
4279 MidiRegionView::show_verbose_cursor_for_new_note_value(boost::shared_ptr<NoteType> current_note,
4280                                                        uint8_t new_value) const
4281 {
4282         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4283         if (mtv) {
4284                 mtv->set_note_highlight (new_value);
4285         }
4286
4287         show_verbose_cursor(get_note_name(current_note, new_value), 10, 20);
4288 }
4289
4290 void
4291 MidiRegionView::show_verbose_cursor (boost::shared_ptr<NoteType> n) const
4292 {
4293         show_verbose_cursor_for_new_note_value(n, n->note());
4294 }
4295
4296 void
4297 MidiRegionView::show_verbose_cursor (string const & text, double xoffset, double yoffset) const
4298 {
4299         trackview.editor().verbose_cursor()->set (text);
4300         trackview.editor().verbose_cursor()->show ();
4301         trackview.editor().verbose_cursor()->set_offset (ArdourCanvas::Duple (xoffset, yoffset));
4302 }
4303
4304 uint8_t
4305 MidiRegionView::get_velocity_for_add (MidiModel::TimeType time) const
4306 {
4307         if (_model->notes().empty()) {
4308                 return 0x40;  // No notes, use default
4309         }
4310
4311         MidiModel::Notes::const_iterator m = _model->note_lower_bound(time);
4312         if (m == _model->notes().begin()) {
4313                 // Before the start, use the velocity of the first note
4314                 return (*m)->velocity();
4315         } else if (m == _model->notes().end()) {
4316                 // Past the end, use the velocity of the last note
4317                 --m;
4318                 return (*m)->velocity();
4319         }
4320
4321         // Interpolate velocity of surrounding notes
4322         MidiModel::Notes::const_iterator n = m;
4323         --n;
4324
4325         const double frac = ((time - (*n)->time()).to_double() /
4326                              ((*m)->time() - (*n)->time()).to_double());
4327
4328         return (*n)->velocity() + (frac * ((*m)->velocity() - (*n)->velocity()));
4329 }
4330
4331 /** @param p A session framepos.
4332  *  @param divisions beat division to snap given by Editor::get_grid_music_divisions() where
4333  *  bar is -1, 0 is audio samples and a positive integer is beat subdivisions.
4334  *  @return beat duration of p snapped to the grid subdivision underneath it.
4335  */
4336 Evoral::Beats
4337 MidiRegionView::snap_frame_to_grid_underneath (framepos_t p, int32_t divisions, bool shift_snap) const
4338 {
4339         TempoMap& map (trackview.session()->tempo_map());
4340         double eqaf = map.exact_qn_at_frame (p + _region->position(), divisions);
4341
4342         if (divisions != 0 && shift_snap) {
4343                 const double qaf = map.quarter_note_at_frame (p + _region->position());
4344                 /* Hack so that we always snap to the note that we are over, instead of snapping
4345                    to the next one if we're more than halfway through the one we're over.
4346                 */
4347                 const Evoral::Beats grid_beats = get_grid_beats (p + _region->position());
4348                 const double rem = eqaf - qaf;
4349                 if (rem >= 0.0) {
4350                         eqaf -= grid_beats.to_double();
4351                 }
4352         }
4353         const double session_start_off = _region->quarter_note() - midi_region()->start_beats();
4354
4355         return Evoral::Beats (eqaf - session_start_off);
4356 }
4357
4358 ChannelMode
4359 MidiRegionView::get_channel_mode () const
4360 {
4361         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
4362         return rtav->midi_track()->get_playback_channel_mode();
4363 }
4364
4365 uint16_t
4366 MidiRegionView::get_selected_channels () const
4367 {
4368         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
4369         return rtav->midi_track()->get_playback_channel_mask();
4370 }
4371
4372
4373 Evoral::Beats
4374 MidiRegionView::get_grid_beats(framepos_t pos) const
4375 {
4376         PublicEditor& editor  = trackview.editor();
4377         bool          success = false;
4378         Evoral::Beats beats   = editor.get_grid_type_as_beats (success, pos);
4379         if (!success) {
4380                 beats = Evoral::Beats(1);
4381         }
4382         return beats;
4383 }
4384 uint8_t
4385 MidiRegionView::y_to_note (double y) const
4386 {
4387         int const n = ((contents_height() - y) / contents_height() * (double)(_current_range_max - _current_range_min + 1))
4388                 + _current_range_min;
4389
4390         if (n < 0) {
4391                 return 0;
4392         } else if (n > 127) {
4393                 return 127;
4394         }
4395
4396         /* min due to rounding and/or off-by-one errors */
4397         return min ((uint8_t) n, _current_range_max);
4398 }
4399
4400 double
4401 MidiRegionView::note_to_y(uint8_t note) const
4402 {
4403         return contents_height() - (note + 1 - _current_range_min) * note_height() + 1;
4404 }
4405
4406 double
4407 MidiRegionView::session_relative_qn (double qn) const
4408 {
4409         return qn + (region()->quarter_note() - midi_region()->start_beats());
4410 }