gtk2_ardour/midi_region_view.cc

   1 /*
   2  * Copyright (C) 2006-2016 David Robillard <d@drobilla.net>
   3  * Copyright (C) 2007-2012 Carl Hetherington <carl@carlh.net>
   4  * Copyright (C) 2007-2018 Paul Davis <paul@linuxaudiosystems.com>
   5  * Copyright (C) 2008-2012 Hans Baier <hansfbaier@googlemail.com>
   6  * Copyright (C) 2013-2017 John Emmas <john@creativepost.co.uk>
   7  * Copyright (C) 2014-2017 Nick Mainsbridge <mainsbridge@gmail.com>
   8  * Copyright (C) 2014-2018 Ben Loftis <ben@harrisonconsoles.com>
   9  * Copyright (C) 2014-2019 Robin Gareus <robin@gareus.org>
  10  * Copyright (C) 2015-2016 Tim Mayberry <mojofunk@gmail.com>
  11  * Copyright (C) 2015-2017 André Nusser <andre.nusser@googlemail.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27
  28 #include <cmath>
  29 #include <algorithm>
  30 #include <ostream>
  31
  32 #include <gtkmm.h>
  33
  34 #include "gtkmm2ext/gtk_ui.h"
  35
  36 #include <sigc++/signal.h>
  37
  38 #include "midi++/midnam_patch.h"
  39
  40 #include "pbd/memento_command.h"
  41 #include "pbd/stateful_diff_command.h"
  42
  43 #include "ardour/midi_model.h"
  44 #include "ardour/midi_playlist.h"
  45 #include "ardour/midi_region.h"
  46 #include "ardour/midi_source.h"
  47 #include "ardour/midi_track.h"
  48 #include "ardour/operations.h"
  49 #include "ardour/session.h"
  50
  51 #include "evoral/Parameter.h"
  52 #include "evoral/Event.h"
  53 #include "evoral/Control.h"
  54 #include "evoral/midi_util.h"
  55
  56 #include "canvas/debug.h"
  57 #include "canvas/text.h"
  58
  59 #include "automation_region_view.h"
  60 #include "automation_time_axis.h"
  61 #include "control_point.h"
  62 #include "debug.h"
  63 #include "editor.h"
  64 #include "editor_drag.h"
  65 #include "ghostregion.h"
  66 #include "gui_thread.h"
  67 #include "item_counts.h"
  68 #include "keyboard.h"
  69 #include "midi_channel_dialog.h"
  70 #include "midi_cut_buffer.h"
  71 #include "midi_list_editor.h"
  72 #include "midi_region_view.h"
  73 #include "midi_streamview.h"
  74 #include "midi_time_axis.h"
  75 #include "midi_util.h"
  76 #include "midi_velocity_dialog.h"
  77 #include "mouse_cursors.h"
  78 #include "note_player.h"
  79 #include "paste_context.h"
  80 #include "public_editor.h"
  81 #include "route_time_axis.h"
  82 #include "rgb_macros.h"
  83 #include "selection.h"
  84 #include "streamview.h"
  85 #include "patch_change_dialog.h"
  86 #include "verbose_cursor.h"
  87 #include "note.h"
  88 #include "hit.h"
  89 #include "patch_change.h"
  90 #include "sys_ex.h"
  91 #include "ui_config.h"
  92
  93 #include "pbd/i18n.h"
  94
  95 using namespace ARDOUR;
  96 using namespace PBD;
  97 using namespace Editing;
  98 using namespace std;
  99 using Gtkmm2ext::Keyboard;
 100
 101 #define MIDI_BP_ZERO ((Config->get_first_midi_bank_is_zero())?0:1)
 102
 103 MidiRegionView::MidiRegionView (ArdourCanvas::Container*      parent,
 104                                 RouteTimeAxisView&            tv,
 105                                 boost::shared_ptr<MidiRegion> r,
 106                                 double                        spu,
 107                                 uint32_t                      basic_color)
 108         : RegionView (parent, tv, r, spu, basic_color)
 109         , _current_range_min(0)
 110         , _current_range_max(0)
 111         , _region_relative_time_converter(r->session().tempo_map(), r->position())
 112         , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start())
 113         , _region_relative_time_converter_double(r->session().tempo_map(), r->position())
 114         , _active_notes(0)
 115         , _note_group (new ArdourCanvas::Container (group))
 116         , _note_diff_command (0)
 117         , _ghost_note(0)
 118         , _step_edit_cursor (0)
 119         , _step_edit_cursor_width (1.0)
 120         , _step_edit_cursor_position (0.0)
 121         , _channel_selection_scoped_note (0)
 122         , _mouse_state(None)
 123         , _pressed_button(0)
 124         , _optimization_iterator (_events.end())
 125         , _list_editor (0)
 126         , _no_sound_notes (false)
 127         , _last_display_zoom (0)
 128         , _last_event_x (0)
 129         , _last_event_y (0)
 130         , _grabbed_keyboard (false)
 131         , _entered (false)
 132         , _entered_note (0)
 133         , _mouse_changed_selection (false)
 134 {
 135         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
 136
 137         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
 138         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
 139
 140         _note_group->raise_to_top();
 141         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 142
 143         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
 144         UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &MidiRegionView::parameter_changed));
 145
 146         connect_to_diskstream ();
 147 }
 148
 149 MidiRegionView::MidiRegionView (ArdourCanvas::Container*      parent,
 150                                 RouteTimeAxisView&            tv,
 151                                 boost::shared_ptr<MidiRegion> r,
 152                                 double                        spu,
 153                                 uint32_t                      basic_color,
 154                                 bool                          recording,
 155                                 TimeAxisViewItem::Visibility  visibility)
 156         : RegionView (parent, tv, r, spu, basic_color, recording, visibility)
 157         , _current_range_min(0)
 158         , _current_range_max(0)
 159         , _region_relative_time_converter(r->session().tempo_map(), r->position())
 160         , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start())
 161         , _region_relative_time_converter_double(r->session().tempo_map(), r->position())
 162         , _active_notes(0)
 163         , _note_group (new ArdourCanvas::Container (group))
 164         , _note_diff_command (0)
 165         , _ghost_note(0)
 166         , _step_edit_cursor (0)
 167         , _step_edit_cursor_width (1.0)
 168         , _step_edit_cursor_position (0.0)
 169         , _channel_selection_scoped_note (0)
 170         , _mouse_state(None)
 171         , _pressed_button(0)
 172         , _optimization_iterator (_events.end())
 173         , _list_editor (0)
 174         , _no_sound_notes (false)
 175         , _last_display_zoom (0)
 176         , _last_event_x (0)
 177         , _last_event_y (0)
 178         , _grabbed_keyboard (false)
 179         , _entered (false)
 180         , _entered_note (0)
 181         , _mouse_changed_selection (false)
 182 {
 183         CANVAS_DEBUG_NAME (_note_group, string_compose ("note group for %1", get_item_name()));
 184
 185         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
 186         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
 187
 188         _note_group->raise_to_top();
 189
 190         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 191
 192         connect_to_diskstream ();
 193 }
 194
 195 void
 196 MidiRegionView::parameter_changed (std::string const & p)
 197 {
 198         if (p == "display-first-midi-bank-as-zero") {
 199                 if (_enable_display) {
 200                         redisplay_model();
 201                 }
 202         } else if (p == "color-regions-using-track-color") {
 203                 set_colors ();
 204         } else if (p == "use-note-color-for-velocity") {
 205                 color_handler ();
 206         }
 207 }
 208
 209 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 210         : sigc::trackable(other)
 211         , RegionView (other)
 212         , _current_range_min(0)
 213         , _current_range_max(0)
 214         , _region_relative_time_converter(other.region_relative_time_converter())
 215         , _source_relative_time_converter(other.source_relative_time_converter())
 216         , _region_relative_time_converter_double(other.region_relative_time_converter_double())
 217         , _active_notes(0)
 218         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
 219         , _note_diff_command (0)
 220         , _ghost_note(0)
 221         , _step_edit_cursor (0)
 222         , _step_edit_cursor_width (1.0)
 223         , _step_edit_cursor_position (0.0)
 224         , _channel_selection_scoped_note (0)
 225         , _mouse_state(None)
 226         , _pressed_button(0)
 227         , _optimization_iterator (_events.end())
 228         , _list_editor (0)
 229         , _no_sound_notes (false)
 230         , _last_display_zoom (0)
 231         , _last_event_x (0)
 232         , _last_event_y (0)
 233         , _grabbed_keyboard (false)
 234         , _entered (false)
 235         , _entered_note (0)
 236         , _mouse_changed_selection (false)
 237 {
 238         init (false);
 239 }
 240
 241 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 242         : RegionView (other, boost::shared_ptr<Region> (region))
 243         , _current_range_min(0)
 244         , _current_range_max(0)
 245         , _region_relative_time_converter(other.region_relative_time_converter())
 246         , _source_relative_time_converter(other.source_relative_time_converter())
 247         , _region_relative_time_converter_double(other.region_relative_time_converter_double())
 248         , _active_notes(0)
 249         , _note_group (new ArdourCanvas::Container (get_canvas_group()))
 250         , _note_diff_command (0)
 251         , _ghost_note(0)
 252         , _step_edit_cursor (0)
 253         , _step_edit_cursor_width (1.0)
 254         , _step_edit_cursor_position (0.0)
 255         , _channel_selection_scoped_note (0)
 256         , _mouse_state(None)
 257         , _pressed_button(0)
 258         , _optimization_iterator (_events.end())
 259         , _list_editor (0)
 260         , _no_sound_notes (false)
 261         , _last_display_zoom (0)
 262         , _last_event_x (0)
 263         , _last_event_y (0)
 264         , _grabbed_keyboard (false)
 265         , _entered (false)
 266         , _entered_note (0)
 267         , _mouse_changed_selection (false)
 268 {
 269         init (true);
 270 }
 271
 272 void
 273 MidiRegionView::init (bool wfd)
 274 {
 275         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 276
 277         if (wfd) {
 278                 Glib::Threads::Mutex::Lock lm(midi_region()->midi_source(0)->mutex());
 279                 midi_region()->midi_source(0)->load_model(lm);
 280         }
 281
 282         _model = midi_region()->midi_source(0)->model();
 283         _enable_display = false;
 284         fill_color_name = "midi frame base";
 285
 286         RegionView::init (false);
 287
 288         //set_height (trackview.current_height());
 289
 290         region_muted ();
 291         region_sync_changed ();
 292         region_resized (ARDOUR::bounds_change);
 293         //region_locked ();
 294
 295         set_colors ();
 296
 297         _enable_display = true;
 298         if (_model) {
 299                 if (wfd) {
 300                         display_model (_model);
 301                 }
 302         }
 303
 304         reset_width_dependent_items (_pixel_width);
 305
 306         group->raise_to_top();
 307
 308         midi_view()->midi_track()->playback_filter().ChannelModeChanged.connect (_channel_mode_changed_connection, invalidator (*this),
 309                                                                        boost::bind (&MidiRegionView::midi_channel_mode_changed, this),
 310                                                                        gui_context ());
 311
 312         instrument_info().Changed.connect (_instrument_changed_connection, invalidator (*this),
 313                                            boost::bind (&MidiRegionView::instrument_settings_changed, this), gui_context());
 314
 315         trackview.editor().SnapChanged.connect(snap_changed_connection, invalidator(*this),
 316                                                boost::bind (&MidiRegionView::snap_changed, this),
 317                                                gui_context());
 318
 319         trackview.editor().MouseModeChanged.connect(_mouse_mode_connection, invalidator (*this),
 320                                                     boost::bind (&MidiRegionView::mouse_mode_changed, this),
 321                                                     gui_context ());
 322
 323         Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&MidiRegionView::parameter_changed, this, _1), gui_context());
 324         UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &MidiRegionView::parameter_changed));
 325         connect_to_diskstream ();
 326 }
 327
 328 InstrumentInfo&
 329 MidiRegionView::instrument_info () const
 330 {
 331         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 332         return route_ui->route()->instrument_info();
 333 }
 334
 335 const boost::shared_ptr<ARDOUR::MidiRegion>
 336 MidiRegionView::midi_region() const
 337 {
 338         return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region);
 339 }
 340
 341 void
 342 MidiRegionView::connect_to_diskstream ()
 343 {
 344         midi_view()->midi_track()->DataRecorded.connect(
 345                 *this, invalidator(*this),
 346                 boost::bind (&MidiRegionView::data_recorded, this, _1),
 347                 gui_context());
 348 }
 349
 350 bool
 351 MidiRegionView::canvas_group_event(GdkEvent* ev)
 352 {
 353         if (in_destructor || _recregion) {
 354                 return false;
 355         }
 356
 357         if (!trackview.editor().internal_editing()) {
 358                 // not in internal edit mode, so just act like a normal region
 359                 return RegionView::canvas_group_event (ev);
 360         }
 361
 362         //For now, move the snapped cursor aside so it doesn't bother you during internal editing
 363         //trackview.editor().set_snapped_cursor_position(_region->position());
 364
 365         bool r;
 366
 367         switch (ev->type) {
 368         case GDK_ENTER_NOTIFY:
 369                 _last_event_x = ev->crossing.x;
 370                 _last_event_y = ev->crossing.y;
 371                 enter_notify(&ev->crossing);
 372                 // set entered_regionview (among other things)
 373                 return RegionView::canvas_group_event (ev);
 374
 375         case GDK_LEAVE_NOTIFY:
 376                 _last_event_x = ev->crossing.x;
 377                 _last_event_y = ev->crossing.y;
 378                 leave_notify(&ev->crossing);
 379                 // reset entered_regionview (among other things)
 380                 return RegionView::canvas_group_event (ev);
 381
 382         case GDK_SCROLL:
 383                 if (scroll (&ev->scroll)) {
 384                         return true;
 385                 }
 386                 break;
 387
 388         case GDK_KEY_PRESS:
 389                 return key_press (&ev->key);
 390
 391         case GDK_KEY_RELEASE:
 392                 return key_release (&ev->key);
 393
 394         case GDK_BUTTON_PRESS:
 395                 return button_press (&ev->button);
 396
 397         case GDK_BUTTON_RELEASE:
 398                 r = button_release (&ev->button);
 399                 return r;
 400
 401         case GDK_MOTION_NOTIFY:
 402                 _last_event_x = ev->motion.x;
 403                 _last_event_y = ev->motion.y;
 404                 return motion (&ev->motion);
 405
 406         default:
 407                 break;
 408         }
 409
 410         return RegionView::canvas_group_event (ev);
 411 }
 412
 413 bool
 414 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 415 {
 416         enter_internal (ev->state);
 417
 418         _entered = true;
 419         return false;
 420 }
 421
 422 bool
 423 MidiRegionView::leave_notify (GdkEventCrossing*)
 424 {
 425         leave_internal();
 426
 427         _entered = false;
 428         return false;
 429 }
 430
 431 void
 432 MidiRegionView::mouse_mode_changed ()
 433 {
 434         // Adjust frame colour (become more transparent for internal tools)
 435         set_frame_color();
 436
 437         if (_entered) {
 438                 if (!trackview.editor().internal_editing()) {
 439                         /* Switched out of internal editing mode while entered.
 440                         Only necessary for leave as a mouse_mode_change over a region
 441                         automatically triggers an enter event. */
 442                         leave_internal();
 443                 }
 444                 else if (trackview.editor().current_mouse_mode() == MouseContent) {
 445                         // hide cursor and ghost note after changing to internal edit mode
 446                         remove_ghost_note ();
 447
 448                         /* XXX This is problematic as the function is executed for every region
 449                         and only for one region _entered_note can be true. Still it's
 450                         necessary as to hide the verbose cursor when we're changing from
 451                         draw mode to internal edit mode. These lines are the reason why
 452                         in some situations no verbose cursor is shown when we enter internal
 453                         edit mode over a note. */
 454                         if (!_entered_note) {
 455                                 hide_verbose_cursor ();
 456                         }
 457                 }
 458         }
 459 }
 460
 461 void
 462 MidiRegionView::enter_internal (uint32_t state)
 463 {
 464         if (trackview.editor().current_mouse_mode() == MouseDraw && _mouse_state != AddDragging) {
 465                 // Show ghost note under pencil
 466                 create_ghost_note(_last_event_x, _last_event_y, state);
 467         }
 468
 469         if (!_selection.empty()) {
 470                 // Grab keyboard for moving selected notes with arrow keys
 471                 Keyboard::magic_widget_grab_focus();
 472                 _grabbed_keyboard = true;
 473         }
 474
 475         // Lower frame handles below notes so they don't steal events
 476         if (frame_handle_start) {
 477                 frame_handle_start->lower_to_bottom();
 478         }
 479         if (frame_handle_end) {
 480                 frame_handle_end->lower_to_bottom();
 481         }
 482 }
 483
 484 void
 485 MidiRegionView::leave_internal()
 486 {
 487         hide_verbose_cursor ();
 488         remove_ghost_note ();
 489         _entered_note = 0;
 490
 491         if (_grabbed_keyboard) {
 492                 Keyboard::magic_widget_drop_focus();
 493                 _grabbed_keyboard = false;
 494         }
 495
 496         // Raise frame handles above notes so they catch events
 497         if (frame_handle_start) {
 498                 frame_handle_start->raise_to_top();
 499         }
 500         if (frame_handle_end) {
 501                 frame_handle_end->raise_to_top();
 502         }
 503 }
 504
 505 bool
 506 MidiRegionView::button_press (GdkEventButton* ev)
 507 {
 508         if (ev->button != 1) {
 509                 return false;
 510         }
 511
 512         Editor* editor = dynamic_cast<Editor *> (&trackview.editor());
 513         MouseMode m = editor->current_mouse_mode();
 514
 515         if (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 516                 _press_cursor_ctx = CursorContext::create(*editor, editor->cursors()->midi_pencil);
 517         }
 518
 519         if (_mouse_state != SelectTouchDragging) {
 520
 521                 _pressed_button = ev->button;
 522
 523                 if (m == MouseDraw || (m == MouseContent && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()))) {
 524
 525                         if (midi_view()->note_mode() == Percussive) {
 526                                 editor->drags()->set (new HitCreateDrag (dynamic_cast<Editor *> (editor), group, this), (GdkEvent *) ev);
 527                         } else {
 528                                 editor->drags()->set (new NoteCreateDrag (dynamic_cast<Editor *> (editor), group, this), (GdkEvent *) ev);
 529                         }
 530
 531                         _mouse_state = AddDragging;
 532                         remove_ghost_note ();
 533                         hide_verbose_cursor ();
 534                 } else {
 535                         _mouse_state = Pressed;
 536                 }
 537
 538                 return true;
 539         }
 540
 541         _pressed_button = ev->button;
 542         _mouse_changed_selection = false;
 543
 544         return true;
 545 }
 546
 547 bool
 548 MidiRegionView::button_release (GdkEventButton* ev)
 549 {
 550         double event_x, event_y;
 551
 552         if (ev->button != 1) {
 553                 return false;
 554         }
 555
 556         event_x = ev->x;
 557         event_y = ev->y;
 558
 559         group->canvas_to_item (event_x, event_y);
 560         group->ungrab ();
 561
 562         PublicEditor& editor = trackview.editor ();
 563
 564         _press_cursor_ctx.reset();
 565
 566         switch (_mouse_state) {
 567         case Pressed: // Clicked
 568
 569                 switch (editor.current_mouse_mode()) {
 570                 case MouseRange:
 571                         /* no motion occurred - simple click */
 572                         clear_editor_note_selection ();
 573                         _mouse_changed_selection = true;
 574                         break;
 575
 576                 case MouseContent:
 577                 case MouseTimeFX:
 578                         {
 579                                 _mouse_changed_selection = true;
 580                                 clear_editor_note_selection ();
 581
 582                                 break;
 583                         }
 584                 case MouseDraw:
 585                         break;
 586
 587                 default:
 588                         break;
 589                 }
 590
 591                 _mouse_state = None;
 592                 break;
 593
 594         case AddDragging:
 595                 /* Don't a ghost note when we added a note - wait until motion to avoid visual confusion.
 596                    we don't want one when we were drag-selecting either. */
 597         case SelectRectDragging:
 598                 editor.drags()->end_grab ((GdkEvent *) ev);
 599                 _mouse_state = None;
 600                 break;
 601
 602
 603         default:
 604                 break;
 605         }
 606
 607         if (_mouse_changed_selection) {
 608                 trackview.editor().begin_reversible_selection_op (X_("Mouse Selection Change"));
 609                 trackview.editor().commit_reversible_selection_op ();
 610         }
 611
 612         return false;
 613 }
 614
 615 bool
 616 MidiRegionView::motion (GdkEventMotion* ev)
 617 {
 618         PublicEditor& editor = trackview.editor ();
 619
 620         if (!_entered_note) {
 621
 622                 if (_mouse_state == AddDragging) {
 623                         if (_ghost_note) {
 624                                 remove_ghost_note ();
 625                         }
 626
 627                 } else if (!_ghost_note && editor.current_mouse_mode() == MouseContent &&
 628                     Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier()) &&
 629                     _mouse_state != AddDragging) {
 630
 631                         create_ghost_note (ev->x, ev->y, ev->state);
 632
 633                 } else if (_ghost_note && editor.current_mouse_mode() == MouseContent &&
 634                            Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 635
 636                         update_ghost_note (ev->x, ev->y, ev->state);
 637
 638                 } else if (_ghost_note && editor.current_mouse_mode() == MouseContent) {
 639
 640                         remove_ghost_note ();
 641                         hide_verbose_cursor ();
 642
 643                 } else if (editor.current_mouse_mode() == MouseDraw) {
 644
 645                         if (_ghost_note) {
 646                                 update_ghost_note (ev->x, ev->y, ev->state);
 647                         }
 648                         else {
 649                                 create_ghost_note (ev->x, ev->y, ev->state);
 650                         }
 651                 }
 652         }
 653
 654         /* any motion immediately hides velocity text that may have been visible */
 655
 656         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 657                 (*i)->hide_velocity ();
 658         }
 659
 660         switch (_mouse_state) {
 661         case Pressed:
 662
 663                 if (_pressed_button == 1) {
 664
 665                         MouseMode m = editor.current_mouse_mode();
 666
 667                         if (m == MouseContent && !Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 668                                 editor.drags()->set (new MidiRubberbandSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
 669                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 670                                         clear_editor_note_selection ();
 671                                         _mouse_changed_selection = true;
 672                                 }
 673                                 _mouse_state = SelectRectDragging;
 674                                 return true;
 675                         } else if (m == MouseRange) {
 676                                 editor.drags()->set (new MidiVerticalSelectDrag (dynamic_cast<Editor *> (&editor), this), (GdkEvent *) ev);
 677                                 _mouse_state = SelectVerticalDragging;
 678                                 return true;
 679                         }
 680                 }
 681
 682                 return false;
 683
 684         case SelectRectDragging:
 685         case SelectVerticalDragging:
 686         case AddDragging:
 687                 editor.drags()->motion_handler ((GdkEvent *) ev, false);
 688                 break;
 689
 690         case SelectTouchDragging:
 691                 return false;
 692
 693         default:
 694                 break;
 695
 696         }
 697
 698         //let RegionView do it's thing.  drags are handled in here
 699         return RegionView::canvas_group_event ((GdkEvent *) ev);
 700 }
 701
 702
 703 bool
 704 MidiRegionView::scroll (GdkEventScroll* ev)
 705 {
 706         if (trackview.editor().drags()->active()) {
 707                 return false;
 708         }
 709         if (_selection.empty()) {
 710                 return false;
 711         }
 712
 713         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier) ||
 714             Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 715                 /* XXX: bit of a hack; allow PrimaryModifier and TertiaryModifier scroll
 716                  * through so that it still works for navigation.
 717                 */
 718                 return false;
 719         }
 720
 721         hide_verbose_cursor ();
 722
 723         bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 724         Keyboard::ModifierMask mask_together(Keyboard::PrimaryModifier|Keyboard::TertiaryModifier);
 725         bool together = Keyboard::modifier_state_contains (ev->state, mask_together);
 726
 727         if (ev->direction == GDK_SCROLL_UP) {
 728                 change_velocities (true, fine, false, together);
 729         } else if (ev->direction == GDK_SCROLL_DOWN) {
 730                 change_velocities (false, fine, false, together);
 731         } else {
 732                 /* left, right: we don't use them */
 733                 return false;
 734         }
 735
 736         return true;
 737 }
 738
 739 bool
 740 MidiRegionView::key_press (GdkEventKey* ev)
 741 {
 742         /* since GTK bindings are generally activated on press, and since
 743            detectable auto-repeat is the name of the game and only sends
 744            repeated presses, carry out key actions at key press, not release.
 745         */
 746         bool unmodified = Keyboard::no_modifier_keys_pressed (ev);
 747
 748         if (unmodified && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
 749
 750                 if (_mouse_state != AddDragging) {
 751                         _mouse_state = SelectTouchDragging;
 752                 }
 753
 754                 return true;
 755
 756         } else if (ev->keyval == GDK_Escape && unmodified) {
 757                 clear_editor_note_selection ();
 758                 _mouse_state = None;
 759
 760         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 761
 762                 bool start = (ev->keyval == GDK_comma);
 763                 bool end = (ev->keyval == GDK_period);
 764                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 765                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 766
 767                 change_note_lengths (fine, shorter, Temporal::Beats(), start, end);
 768
 769                 return true;
 770
 771         } else if ((ev->keyval == GDK_BackSpace || ev->keyval == GDK_Delete) && unmodified) {
 772
 773                 if (_selection.empty()) {
 774                         return false;
 775                 }
 776
 777                 delete_selection();
 778                 return true;
 779
 780         } else if (ev->keyval == GDK_Tab || ev->keyval == GDK_ISO_Left_Tab) {
 781
 782                 trackview.editor().begin_reversible_selection_op (X_("Select Adjacent Note"));
 783
 784                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 785                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 786                 } else {
 787                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 788                 }
 789
 790                 trackview.editor().commit_reversible_selection_op();
 791
 792                 return true;
 793
 794         } else if (ev->keyval == GDK_Up) {
 795
 796                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 797                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 798                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
 799
 800                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 801                         change_velocities (true, fine, allow_smush, together);
 802                 } else {
 803                         transpose (true, fine, allow_smush);
 804                 }
 805                 return true;
 806
 807         } else if (ev->keyval == GDK_Down) {
 808
 809                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 810                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 811                 bool together = Keyboard::modifier_state_contains (ev->state, Keyboard::Level4Modifier);
 812
 813                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 814                         change_velocities (false, fine, allow_smush, together);
 815                 } else {
 816                         transpose (false, fine, allow_smush);
 817                 }
 818                 return true;
 819
 820         } else if (ev->keyval == GDK_Left) {
 821
 822                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 823                 nudge_notes (false, fine);
 824                 return true;
 825
 826         } else if (ev->keyval == GDK_Right) {
 827
 828                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 829                 nudge_notes (true, fine);
 830                 return true;
 831
 832         } else if (ev->keyval == GDK_c && unmodified) {
 833                 channel_edit ();
 834                 return true;
 835
 836         } else if (ev->keyval == GDK_v && unmodified) {
 837                 velocity_edit ();
 838                 return true;
 839         }
 840
 841         return false;
 842 }
 843
 844 bool
 845 MidiRegionView::key_release (GdkEventKey* ev)
 846 {
 847         if ((_mouse_state == SelectTouchDragging) && (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R)) {
 848                 _mouse_state = None;
 849                 return true;
 850         }
 851         return false;
 852 }
 853
 854 void
 855 MidiRegionView::channel_edit ()
 856 {
 857         if (_selection.empty()) {
 858                 return;
 859         }
 860
 861         /* pick a note somewhat at random (since Selection is a set<>) to
 862          * provide the "current" channel for the dialog.
 863          */
 864
 865         uint8_t current_channel = (*_selection.begin())->note()->channel ();
 866         MidiChannelDialog channel_dialog (current_channel);
 867         int ret = channel_dialog.run ();
 868
 869         switch (ret) {
 870         case Gtk::RESPONSE_OK:
 871                 break;
 872         default:
 873                 return;
 874         }
 875
 876         uint8_t new_channel = channel_dialog.active_channel ();
 877
 878         start_note_diff_command (_("channel edit"));
 879
 880         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
 881                 Selection::iterator next = i;
 882                 ++next;
 883                 change_note_channel (*i, new_channel);
 884                 i = next;
 885         }
 886
 887         apply_diff ();
 888 }
 889
 890 void
 891 MidiRegionView::velocity_edit ()
 892 {
 893         if (_selection.empty()) {
 894                 return;
 895         }
 896
 897         /* pick a note somewhat at random (since Selection is a set<>) to
 898          * provide the "current" velocity for the dialog.
 899          */
 900
 901         uint8_t current_velocity = (*_selection.begin())->note()->velocity ();
 902         MidiVelocityDialog velocity_dialog (current_velocity);
 903         int ret = velocity_dialog.run ();
 904
 905         switch (ret) {
 906         case Gtk::RESPONSE_OK:
 907                 break;
 908         default:
 909                 return;
 910         }
 911
 912         uint8_t new_velocity = velocity_dialog.velocity ();
 913
 914         start_note_diff_command (_("velocity edit"));
 915
 916         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
 917                 Selection::iterator next = i;
 918                 ++next;
 919                 change_note_velocity (*i, new_velocity, false);
 920                 i = next;
 921         }
 922
 923         apply_diff ();
 924 }
 925
 926 void
 927 MidiRegionView::show_list_editor ()
 928 {
 929         if (!_list_editor) {
 930                 _list_editor = new MidiListEditor (trackview.session(), midi_region(), midi_view()->midi_track());
 931         }
 932         _list_editor->present ();
 933 }
 934
 935 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 936  * \param t time in samples relative to the position of the region
 937  * \param y vertical position in pixels
 938  * \param length duration of the note in beats
 939  * \param snap_t true to snap t to the grid, otherwise false.
 940  */
 941 void
 942 MidiRegionView::create_note_at (samplepos_t t, double y, Temporal::Beats length, uint32_t state, bool shift_snap)
 943 {
 944         if (length < 2 * DBL_EPSILON) {
 945                 return;
 946         }
 947
 948         MidiTimeAxisView* const mtv  = dynamic_cast<MidiTimeAxisView*>(&trackview);
 949         MidiStreamView* const   view = mtv->midi_view();
 950         boost::shared_ptr<MidiRegion> mr  = boost::dynamic_pointer_cast<MidiRegion> (_region);
 951
 952         if (!mr) {
 953                 return;
 954         }
 955
 956         // Start of note in samples relative to region start
 957         const int32_t divisions = trackview.editor().get_grid_music_divisions (state);
 958         Temporal::Beats beat_time = snap_sample_to_grid_underneath (t, divisions, shift_snap);
 959
 960         const double  note     = view->y_to_note(y);
 961         const uint8_t chan     = mtv->get_channel_for_add();
 962         const uint8_t velocity = get_velocity_for_add(beat_time);
 963
 964         const boost::shared_ptr<NoteType> new_note(
 965                 new NoteType (chan, beat_time, length, (uint8_t)note, velocity));
 966
 967         if (_model->contains (new_note)) {
 968                 return;
 969         }
 970
 971         view->update_note_range(new_note->note());
 972
 973         start_note_diff_command(_("add note"));
 974
 975         note_diff_add_note (new_note, true, false);
 976
 977         apply_diff();
 978
 979         play_midi_note (new_note);
 980 }
 981
 982 void
 983 MidiRegionView::clear_events ()
 984 {
 985         // clear selection without signaling
 986         clear_selection_internal ();
 987
 988         MidiGhostRegion* gr;
 989         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 990                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 991                         gr->clear_events();
 992                 }
 993         }
 994
 995
 996         _note_group->clear (true);
 997         _events.clear();
 998         _patch_changes.clear();
 999         _sys_exes.clear();
1000         _optimization_iterator = _events.end();
1001 }
1002
1003 void
1004 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
1005 {
1006         _model = model;
1007
1008         content_connection.disconnect ();
1009         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
1010         /* Don't signal as nobody else needs to know until selection has been altered. */
1011         clear_events();
1012
1013         if (_enable_display) {
1014                 redisplay_model();
1015         }
1016 }
1017
1018 void
1019 MidiRegionView::start_note_diff_command (string name)
1020 {
1021         if (!_note_diff_command) {
1022                 trackview.editor().begin_reversible_command (name);
1023                 _note_diff_command = _model->new_note_diff_command (name);
1024         }
1025 }
1026
1027 void
1028 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
1029 {
1030         if (_note_diff_command) {
1031                 _note_diff_command->add (note);
1032         }
1033         if (selected) {
1034                 _marked_for_selection.insert(note);
1035         }
1036         if (show_velocity) {
1037                 _marked_for_velocity.insert(note);
1038         }
1039 }
1040
1041 void
1042 MidiRegionView::note_diff_remove_note (NoteBase* ev)
1043 {
1044         if (_note_diff_command && ev->note()) {
1045                 _note_diff_command->remove(ev->note());
1046         }
1047 }
1048
1049 void
1050 MidiRegionView::note_diff_add_change (NoteBase* ev,
1051                                       MidiModel::NoteDiffCommand::Property property,
1052                                       uint8_t val)
1053 {
1054         if (_note_diff_command) {
1055                 _note_diff_command->change (ev->note(), property, val);
1056         }
1057 }
1058
1059 void
1060 MidiRegionView::note_diff_add_change (NoteBase* ev,
1061                                       MidiModel::NoteDiffCommand::Property property,
1062                                       Temporal::Beats val)
1063 {
1064         if (_note_diff_command) {
1065                 _note_diff_command->change (ev->note(), property, val);
1066         }
1067 }
1068
1069 void
1070 MidiRegionView::apply_diff (bool as_subcommand, bool was_copy)
1071 {
1072         bool commit = false;
1073
1074         if (!_note_diff_command) {
1075                 return;
1076         }
1077
1078         bool add_or_remove = _note_diff_command->adds_or_removes();
1079
1080         if (!was_copy && add_or_remove) {
1081                 // Mark all selected notes for selection when model reloads
1082                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1083                         _marked_for_selection.insert((*i)->note());
1084                 }
1085         }
1086
1087         if (as_subcommand) {
1088                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
1089         } else {
1090                 _model->apply_command (*trackview.session(), _note_diff_command);
1091                 commit = true;
1092         }
1093
1094         _note_diff_command = 0;
1095
1096         if (add_or_remove) {
1097                 _marked_for_selection.clear();
1098         }
1099
1100         _marked_for_velocity.clear();
1101
1102         if (commit) {
1103                 trackview.editor().commit_reversible_command ();
1104         }
1105 }
1106
1107 void
1108 MidiRegionView::abort_command()
1109 {
1110         delete _note_diff_command;
1111         _note_diff_command = 0;
1112         trackview.editor().abort_reversible_command();
1113         clear_editor_note_selection();
1114 }
1115
1116 NoteBase*
1117 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
1118 {
1119
1120         if (_optimization_iterator != _events.end()) {
1121                 ++_optimization_iterator;
1122         }
1123
1124         if (_optimization_iterator != _events.end() && _optimization_iterator->first == note) {
1125                 return _optimization_iterator->second;
1126         }
1127
1128         _optimization_iterator = _events.find (note);
1129         if (_optimization_iterator != _events.end()) {
1130                 return _optimization_iterator->second;
1131         }
1132
1133         return 0;
1134 }
1135
1136 /** This version finds any canvas note matching the supplied note. */
1137 NoteBase*
1138 MidiRegionView::find_canvas_note (Evoral::event_id_t id)
1139 {
1140         Events::iterator it;
1141
1142         for (it = _events.begin(); it != _events.end(); ++it) {
1143                 if (it->first->id() == id) {
1144                         return it->second;
1145                 }
1146         }
1147
1148         return 0;
1149 }
1150
1151 boost::shared_ptr<PatchChange>
1152 MidiRegionView::find_canvas_patch_change (MidiModel::PatchChangePtr p)
1153 {
1154         PatchChanges::const_iterator f = _patch_changes.find (p);
1155
1156         if (f != _patch_changes.end()) {
1157                 return f->second;
1158         }
1159
1160         return boost::shared_ptr<PatchChange>();
1161 }
1162
1163 boost::shared_ptr<SysEx>
1164 MidiRegionView::find_canvas_sys_ex (MidiModel::SysExPtr s)
1165 {
1166         SysExes::const_iterator f = _sys_exes.find (s);
1167
1168         if (f != _sys_exes.end()) {
1169                 return f->second;
1170         }
1171
1172         return boost::shared_ptr<SysEx>();
1173 }
1174
1175 void
1176 MidiRegionView::get_events (Events& e, Evoral::Sequence<Temporal::Beats>::NoteOperator op, uint8_t val, int chan_mask)
1177 {
1178         MidiModel::Notes notes;
1179         _model->get_notes (notes, op, val, chan_mask);
1180
1181         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1182                 NoteBase* cne = find_canvas_note (*n);
1183                 if (cne) {
1184                         e.insert (make_pair (*n, cne));
1185                 }
1186         }
1187 }
1188
1189 void
1190 MidiRegionView::redisplay_model()
1191 {
1192         if (_active_notes) {
1193                 // Currently recording
1194                 const samplecnt_t zoom = trackview.editor().get_current_zoom();
1195                 if (zoom != _last_display_zoom) {
1196                         /* Update resolved canvas notes to reflect changes in zoom without
1197                            touching model.  Leave active notes (with length 0) alone since
1198                            they are being extended. */
1199                         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1200                                 if (i->second->note()->length() > 0) {
1201                                         update_note(i->second);
1202                                 }
1203                         }
1204                         _last_display_zoom = zoom;
1205                 }
1206                 return;
1207         }
1208
1209         if (!_model) {
1210                 return;
1211         }
1212
1213         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
1214                 _optimization_iterator->second->invalidate();
1215         }
1216
1217         bool empty_when_starting = _events.empty();
1218         _optimization_iterator = _events.begin();
1219         MidiModel::Notes missing_notes;
1220         Note* sus = NULL;
1221         Hit*  hit = NULL;
1222
1223         MidiModel::ReadLock lock(_model->read_lock());
1224         MidiModel::Notes& notes (_model->notes());
1225
1226         NoteBase* cne;
1227         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1228
1229                 boost::shared_ptr<NoteType> note (*n);
1230                 bool visible;
1231
1232                 if (note_in_region_range (note, visible)) {
1233                         if (!empty_when_starting && (cne = find_canvas_note (note)) != 0) {
1234                                 cne->validate ();
1235                                 if (visible) {
1236                                         cne->show ();
1237                                 } else {
1238                                         cne->hide ();
1239                                 }
1240                         } else {
1241                                 missing_notes.insert (note);
1242                         }
1243                 }
1244         }
1245
1246         if (!empty_when_starting) {
1247                 MidiModel::Notes::iterator f;
1248                 for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1249
1250                         NoteBase* cne = i->second;
1251
1252                         /* remove note items that are no longer valid */
1253                         if (!cne->valid()) {
1254
1255                                 for (vector<GhostRegion*>::iterator j = ghosts.begin(); j != ghosts.end(); ++j) {
1256                                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*j);
1257                                         if (gr) {
1258                                                 gr->remove_note (cne);
1259                                         }
1260                                 }
1261
1262                                 delete cne;
1263                                 i = _events.erase (i);
1264
1265                         } else {
1266                                 bool visible = cne->item()->visible();
1267
1268                                 if ((sus = dynamic_cast<Note*>(cne))) {
1269
1270                                         if (visible) {
1271                                                 update_sustained (sus);
1272                                         }
1273
1274                                 } else if ((hit = dynamic_cast<Hit*>(cne))) {
1275
1276                                         if (visible) {
1277                                                 update_hit (hit);
1278                                         }
1279
1280                                 }
1281                                 ++i;
1282                         }
1283                 }
1284         }
1285
1286         for (MidiModel::Notes::iterator n = missing_notes.begin(); n != missing_notes.end(); ++n) {
1287                 boost::shared_ptr<NoteType> note (*n);
1288                 NoteBase* cne;
1289                 bool visible;
1290
1291                 if (note_in_region_range (note, visible)) {
1292                         if (visible) {
1293                                 cne = add_note (note, true);
1294                         } else {
1295                                 cne = add_note (note, false);
1296                         }
1297                 } else {
1298                         cne = add_note (note, false);
1299                 }
1300
1301                 for (set<Evoral::event_id_t>::iterator it = _pending_note_selection.begin(); it != _pending_note_selection.end(); ++it) {
1302                         if ((*it) == note->id()) {
1303                                 add_to_selection (cne);
1304                         }
1305                 }
1306         }
1307
1308         for (vector<GhostRegion*>::iterator j = ghosts.begin(); j != ghosts.end(); ++j) {
1309                 MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*j);
1310                 if (gr && !gr->trackview.hidden()) {
1311                         gr->redisplay_model ();
1312                 }
1313         }
1314
1315         display_sysexes();
1316         display_patch_changes ();
1317
1318         _marked_for_selection.clear ();
1319         _marked_for_velocity.clear ();
1320         _pending_note_selection.clear ();
1321
1322 }
1323
1324 void
1325 MidiRegionView::display_patch_changes ()
1326 {
1327         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1328         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
1329
1330         for (uint8_t i = 0; i < 16; ++i) {
1331                 display_patch_changes_on_channel (i, chn_mask & (1 << i));
1332         }
1333 }
1334
1335 /** @param active_channel true to display patch changes fully, false to display
1336  * them `greyed-out' (as on an inactive channel)
1337  */
1338 void
1339 MidiRegionView::display_patch_changes_on_channel (uint8_t channel, bool active_channel)
1340 {
1341         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1342                 boost::shared_ptr<PatchChange> p;
1343
1344                 if ((*i)->channel() != channel) {
1345                         continue;
1346                 }
1347
1348                 if ((p = find_canvas_patch_change (*i)) != 0) {
1349
1350                         const samplecnt_t region_samples = source_beats_to_region_samples ((*i)->time());
1351
1352                         if (region_samples < 0 || region_samples >= _region->length()) {
1353                                 p->hide();
1354                         } else {
1355                                 const double x = trackview.editor().sample_to_pixel (region_samples);
1356                                 const string patch_name = instrument_info().get_patch_name ((*i)->bank(), (*i)->program(), channel);
1357                                 p->canvas_item()->set_position (ArdourCanvas::Duple (x, 1.0));
1358                                 p->set_text (patch_name);
1359
1360                                 p->show();
1361                         }
1362
1363                 } else {
1364                         const string patch_name = instrument_info().get_patch_name ((*i)->bank(), (*i)->program(), channel);
1365                         add_canvas_patch_change (*i, patch_name, active_channel);
1366                 }
1367         }
1368 }
1369
1370 void
1371 MidiRegionView::display_sysexes()
1372 {
1373         bool have_periodic_system_messages = false;
1374         bool display_periodic_messages = true;
1375
1376         if (!UIConfiguration::instance().get_never_display_periodic_midi()) {
1377
1378                 for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1379                         if ((*i)->is_spp() || (*i)->is_mtc_quarter() || (*i)->is_mtc_full()) {
1380                                 have_periodic_system_messages = true;
1381                                 break;
1382                         }
1383                 }
1384
1385                 if (have_periodic_system_messages) {
1386                         double zoom = trackview.editor().get_current_zoom (); // samples per pixel
1387
1388                         /* get an approximate value for the number of samples per video frame */
1389
1390                         double video_frame = trackview.session()->sample_rate() * (1.0/30);
1391
1392                         /* if we are zoomed out beyond than the cutoff (i.e. more
1393                          * samples per pixel than samples per 4 video frames), don't
1394                          * show periodic sysex messages.
1395                          */
1396
1397                         if (zoom > (video_frame*4)) {
1398                                 display_periodic_messages = false;
1399                         }
1400                 }
1401         } else {
1402                 display_periodic_messages = false;
1403         }
1404
1405         const boost::shared_ptr<MidiRegion> mregion (midi_region());
1406
1407         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1408                 MidiModel::SysExPtr sysex_ptr = *i;
1409                 Temporal::Beats time = sysex_ptr->time();
1410
1411                 if ((*i)->is_spp() || (*i)->is_mtc_quarter() || (*i)->is_mtc_full()) {
1412                         if (!display_periodic_messages) {
1413                                 continue;
1414                         }
1415                 }
1416
1417                 ostringstream str;
1418                 str << hex;
1419                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1420                         str << int((*i)->buffer()[b]);
1421                         if (b != (*i)->size() -1) {
1422                                 str << " ";
1423                         }
1424                 }
1425                 string text = str.str();
1426
1427                 const double x = trackview.editor().sample_to_pixel(source_beats_to_region_samples(time));
1428
1429                 double height = midi_stream_view()->contents_height();
1430
1431                 // CAIROCANVAS: no longer passing *i (the sysex event) to the
1432                 // SysEx canvas object!!!
1433                 boost::shared_ptr<SysEx> sysex = find_canvas_sys_ex (sysex_ptr);
1434
1435                 if (!sysex) {
1436                         sysex = boost::shared_ptr<SysEx>(
1437                                 new SysEx (*this, _note_group, text, height, x, 1.0, sysex_ptr));
1438                         _sys_exes.insert (make_pair (sysex_ptr, sysex));
1439                 } else {
1440                         sysex->set_height (height);
1441                         sysex->item().set_position (ArdourCanvas::Duple (x, 1.0));
1442                 }
1443
1444                 // Show unless message is beyond the region bounds
1445                 if (time - mregion->start_beats() >= mregion->length_beats() || time < mregion->start_beats()) {
1446                         sysex->hide();
1447                 } else {
1448                         sysex->show();
1449                 }
1450         }
1451 }
1452
1453 MidiRegionView::~MidiRegionView ()
1454 {
1455         in_destructor = true;
1456
1457         hide_verbose_cursor ();
1458
1459         delete _list_editor;
1460
1461         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1462
1463         if (_active_notes) {
1464                 end_write();
1465         }
1466         _entered_note = 0;
1467         clear_events ();
1468
1469         delete _note_group;
1470         delete _note_diff_command;
1471         delete _step_edit_cursor;
1472 }
1473
1474 void
1475 MidiRegionView::region_resized (const PropertyChange& what_changed)
1476 {
1477         RegionView::region_resized(what_changed); // calls RegionView::set_duration()
1478
1479         if (what_changed.contains (ARDOUR::Properties::position)) {
1480                 _region_relative_time_converter.set_origin_b(_region->position());
1481                 _region_relative_time_converter_double.set_origin_b(_region->position());
1482                 /* reset_width dependent_items() redisplays model */
1483
1484         }
1485
1486         if (what_changed.contains (ARDOUR::Properties::start) ||
1487             what_changed.contains (ARDOUR::Properties::position)) {
1488                 _source_relative_time_converter.set_origin_b (_region->position() - _region->start());
1489         }
1490         /* catch end and start trim so we can update the view*/
1491         if (!what_changed.contains (ARDOUR::Properties::start) &&
1492             what_changed.contains (ARDOUR::Properties::length)) {
1493                 enable_display (true);
1494         } else if (what_changed.contains (ARDOUR::Properties::start) &&
1495             what_changed.contains (ARDOUR::Properties::length)) {
1496                 enable_display (true);
1497         }
1498 }
1499
1500 void
1501 MidiRegionView::reset_width_dependent_items (double pixel_width)
1502 {
1503         RegionView::reset_width_dependent_items(pixel_width);
1504
1505         if (_enable_display) {
1506                 redisplay_model();
1507         }
1508
1509         bool hide_all = false;
1510         PatchChanges::iterator x = _patch_changes.begin();
1511         if (x != _patch_changes.end()) {
1512                 hide_all = x->second->width() >= _pixel_width;
1513         }
1514
1515         if (hide_all) {
1516                 for (; x != _patch_changes.end(); ++x) {
1517                         x->second->hide();
1518                 }
1519         }
1520
1521         move_step_edit_cursor (_step_edit_cursor_position);
1522         set_step_edit_cursor_width (_step_edit_cursor_width);
1523 }
1524
1525 void
1526 MidiRegionView::set_height (double height)
1527 {
1528         double old_height = _height;
1529         RegionView::set_height(height);
1530
1531         apply_note_range (midi_stream_view()->lowest_note(),
1532                           midi_stream_view()->highest_note(),
1533                           height != old_height);
1534
1535         if (name_text) {
1536                 name_text->raise_to_top();
1537         }
1538
1539         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1540                 (*x).second->set_height (midi_stream_view()->contents_height());
1541         }
1542
1543         if (_step_edit_cursor) {
1544                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
1545         }
1546 }
1547
1548
1549 /** Apply the current note range from the stream view
1550  * by repositioning/hiding notes as necessary
1551  */
1552 void
1553 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1554 {
1555         if (!_enable_display) {
1556                 return;
1557         }
1558
1559         if (!force && _current_range_min == min && _current_range_max == max) {
1560                 return;
1561         }
1562
1563         _current_range_min = min;
1564         _current_range_max = max;
1565
1566         redisplay_model ();
1567 }
1568
1569 GhostRegion*
1570 MidiRegionView::add_ghost (TimeAxisView& tv)
1571 {
1572         double unit_position = _region->position () / samples_per_pixel;
1573         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1574         MidiGhostRegion* ghost;
1575
1576         if (mtv && mtv->midi_view()) {
1577                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1578                    to allow having midi notes on top of note lines and waveforms.
1579                 */
1580                 ghost = new MidiGhostRegion (*this, *mtv->midi_view(), trackview, unit_position);
1581         } else {
1582                 ghost = new MidiGhostRegion (*this, tv, trackview, unit_position);
1583         }
1584
1585         ghost->set_colors ();
1586         ghost->set_height ();
1587         ghost->set_duration (_region->length() / samples_per_pixel);
1588
1589         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1590                 ghost->add_note(i->second);
1591         }
1592
1593         ghosts.push_back (ghost);
1594         enable_display (true);
1595         return ghost;
1596 }
1597
1598
1599 /** Begin tracking note state for successive calls to add_event
1600  */
1601 void
1602 MidiRegionView::begin_write()
1603 {
1604         if (_active_notes) {
1605                 delete[] _active_notes;
1606         }
1607         _active_notes = new Note*[128];
1608         for (unsigned i = 0; i < 128; ++i) {
1609                 _active_notes[i] = 0;
1610         }
1611 }
1612
1613
1614 /** Destroy note state for add_event
1615  */
1616 void
1617 MidiRegionView::end_write()
1618 {
1619         delete[] _active_notes;
1620         _active_notes = 0;
1621         _marked_for_selection.clear();
1622         _marked_for_velocity.clear();
1623 }
1624
1625
1626 /** Resolve an active MIDI note (while recording).
1627  */
1628 void
1629 MidiRegionView::resolve_note(uint8_t note, Temporal::Beats end_time)
1630 {
1631         if (midi_view()->note_mode() != Sustained) {
1632                 return;
1633         }
1634
1635         if (_active_notes && _active_notes[note]) {
1636                 /* Set note length so update_note() works.  Note this is a local note
1637                    for recording, not from a model, so we can safely mess with it. */
1638                 _active_notes[note]->note()->set_length(
1639                         end_time - _active_notes[note]->note()->time());
1640
1641                 /* End time is relative to the region being recorded. */
1642                 const samplepos_t end_time_samples = region_beats_to_region_samples(end_time);
1643
1644                 _active_notes[note]->set_x1 (trackview.editor().sample_to_pixel(end_time_samples));
1645                 _active_notes[note]->set_outline_all ();
1646                 _active_notes[note] = 0;
1647         }
1648 }
1649
1650
1651 /** Extend active notes to rightmost edge of region (if length is changed)
1652  */
1653 void
1654 MidiRegionView::extend_active_notes()
1655 {
1656         if (!_active_notes) {
1657                 return;
1658         }
1659
1660         for (unsigned i = 0; i < 128; ++i) {
1661                 if (_active_notes[i]) {
1662                         _active_notes[i]->set_x1(
1663                                 trackview.editor().sample_to_pixel(_region->length()));
1664                 }
1665         }
1666 }
1667
1668 void
1669 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1670 {
1671         if (_no_sound_notes || !UIConfiguration::instance().get_sound_midi_notes()) {
1672                 return;
1673         }
1674
1675         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1676
1677         if (!route_ui || !route_ui->midi_track()) {
1678                 return;
1679         }
1680
1681         NotePlayer* np = new NotePlayer (route_ui->midi_track ());
1682         np->add (note);
1683         np->play ();
1684
1685         /* NotePlayer deletes itself */
1686 }
1687
1688 void
1689 MidiRegionView::start_playing_midi_note(boost::shared_ptr<NoteType> note)
1690 {
1691         const std::vector< boost::shared_ptr<NoteType> > notes(1, note);
1692         start_playing_midi_chord(notes);
1693 }
1694
1695 void
1696 MidiRegionView::start_playing_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1697 {
1698         if (_no_sound_notes || !UIConfiguration::instance().get_sound_midi_notes()) {
1699                 return;
1700         }
1701
1702         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1703
1704         if (!route_ui || !route_ui->midi_track()) {
1705                 return;
1706         }
1707
1708         NotePlayer* player = new NotePlayer (route_ui->midi_track());
1709
1710         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1711                 player->add (*n);
1712         }
1713
1714         player->play ();
1715 }
1716
1717
1718 bool
1719 MidiRegionView::note_in_region_range (const boost::shared_ptr<NoteType> note, bool& visible) const
1720 {
1721         const boost::shared_ptr<ARDOUR::MidiRegion> midi_reg = midi_region();
1722
1723         /* must compare double explicitly as Beats::operator< rounds to ppqn */
1724         const bool outside = (note->time().to_double() < midi_reg->start_beats() ||
1725                               note->time().to_double() >= midi_reg->start_beats() + midi_reg->length_beats());
1726
1727         visible = (note->note() >= _current_range_min) &&
1728                 (note->note() <= _current_range_max);
1729
1730         return !outside;
1731 }
1732
1733 void
1734 MidiRegionView::update_note (NoteBase* note, bool update_ghost_regions)
1735 {
1736         Note* sus = NULL;
1737         Hit*  hit = NULL;
1738         if ((sus = dynamic_cast<Note*>(note))) {
1739                 update_sustained(sus, update_ghost_regions);
1740         } else if ((hit = dynamic_cast<Hit*>(note))) {
1741                 update_hit(hit, update_ghost_regions);
1742         }
1743 }
1744
1745 /** Update a canvas note's size from its model note.
1746  *  @param ev Canvas note to update.
1747  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1748  */
1749 void
1750 MidiRegionView::update_sustained (Note* ev, bool update_ghost_regions)
1751 {
1752         TempoMap& map (trackview.session()->tempo_map());
1753         const boost::shared_ptr<ARDOUR::MidiRegion> mr = midi_region();
1754         boost::shared_ptr<NoteType> note = ev->note();
1755
1756         const double session_source_start = _region->quarter_note() - mr->start_beats();
1757         const samplepos_t note_start_samples = map.sample_at_quarter_note (note->time().to_double() + session_source_start) - _region->position();
1758
1759         const double x0 = trackview.editor().sample_to_pixel (note_start_samples);
1760         double x1;
1761         const double y0 = 1 + floor(note_to_y(note->note()));
1762         double y1;
1763
1764         /* trim note display to not overlap the end of its region */
1765         if (note->length().to_double() > 0.0) {
1766                 double note_end_time = note->end_time().to_double();
1767
1768                 if (note_end_time > mr->start_beats() + mr->length_beats()) {
1769                         note_end_time = mr->start_beats() + mr->length_beats();
1770                 }
1771
1772                 const samplepos_t note_end_samples = map.sample_at_quarter_note (session_source_start + note_end_time) - _region->position();
1773
1774                 x1 = std::max(1., trackview.editor().sample_to_pixel (note_end_samples)) - 1;
1775         } else {
1776                 x1 = std::max(1., trackview.editor().sample_to_pixel (_region->length())) - 1;
1777         }
1778
1779         y1 = y0 + std::max(1., floor(note_height()) - 1);
1780
1781         ev->set (ArdourCanvas::Rect (x0, y0, x1, y1));
1782         ev->set_velocity (note->velocity()/127.0);
1783
1784         if (!note->length()) {
1785                 if (_active_notes && note->note() < 128) {
1786                         Note* const old_rect = _active_notes[note->note()];
1787                         if (old_rect) {
1788                                 /* There is an active note on this key, so we have a stuck
1789                                    note.  Finish the old rectangle here. */
1790                                 old_rect->set_x1 (x1);
1791                                 old_rect->set_outline_all ();
1792                         }
1793                         _active_notes[note->note()] = ev;
1794                 }
1795                 /* outline all but right edge */
1796                 ev->set_outline_what (ArdourCanvas::Rectangle::What (
1797                                               ArdourCanvas::Rectangle::TOP|
1798                                               ArdourCanvas::Rectangle::LEFT|
1799                                               ArdourCanvas::Rectangle::BOTTOM));
1800         } else {
1801                 /* outline all edges */
1802                 ev->set_outline_all ();
1803         }
1804
1805         // Update color in case velocity has changed
1806         const uint32_t base_col = ev->base_color();
1807         ev->set_fill_color(base_col);
1808         ev->set_outline_color(ev->calculate_outline(base_col, ev->selected()));
1809
1810 }
1811
1812 void
1813 MidiRegionView::update_hit (Hit* ev, bool update_ghost_regions)
1814 {
1815         boost::shared_ptr<NoteType> note = ev->note();
1816
1817         const double note_time_qn = note->time().to_double() + (_region->quarter_note() - midi_region()->start_beats());
1818         const samplepos_t note_start_samples = trackview.session()->tempo_map().sample_at_quarter_note (note_time_qn) - _region->position();
1819
1820         const double x = trackview.editor().sample_to_pixel(note_start_samples);
1821         const double diamond_size = std::max(1., floor(note_height()) - 2.);
1822         const double y = 1.5 + floor(note_to_y(note->note())) + diamond_size * .5;
1823
1824         // see DnD note in MidiRegionView::apply_note_range() above
1825         if (y <= 0 || y >= _height) {
1826                 ev->hide();
1827         } else {
1828                 ev->show();
1829         }
1830
1831         ev->set_position (ArdourCanvas::Duple (x, y));
1832         ev->set_height (diamond_size);
1833
1834         // Update color in case velocity has changed
1835         const uint32_t base_col = ev->base_color();
1836         ev->set_fill_color(base_col);
1837         ev->set_outline_color(ev->calculate_outline(base_col, ev->selected()));
1838
1839 }
1840
1841 /** Add a MIDI note to the view (with length).
1842  *
1843  * If in sustained mode, notes with length 0 will be considered active
1844  * notes, and resolve_note should be called when the corresponding note off
1845  * event arrives, to properly display the note.
1846  */
1847 NoteBase*
1848 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1849 {
1850         NoteBase* event = 0;
1851
1852         if (midi_view()->note_mode() == Sustained) {
1853
1854                 Note* ev_rect = new Note (*this, _note_group, note); // XXX may leak
1855
1856                 update_sustained (ev_rect);
1857
1858                 event = ev_rect;
1859
1860         } else if (midi_view()->note_mode() == Percussive) {
1861
1862                 const double diamond_size = std::max(1., floor(note_height()) - 2.);
1863
1864                 Hit* ev_diamond = new Hit (*this, _note_group, diamond_size, note); // XXX may leak
1865
1866                 update_hit (ev_diamond);
1867
1868                 event = ev_diamond;
1869
1870         } else {
1871                 event = 0;
1872         }
1873
1874         if (event) {
1875                 MidiGhostRegion* gr;
1876
1877                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1878                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1879                                 gr->add_note(event);
1880                         }
1881                 }
1882
1883                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1884                         note_selected(event, true);
1885                 }
1886
1887                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1888                         event->show_velocity();
1889                 }
1890
1891                 event->on_channel_selection_change (get_selected_channels());
1892                 _events.insert (make_pair (event->note(), event));
1893
1894                 if (visible) {
1895                         event->show();
1896                 } else {
1897                         event->hide ();
1898                 }
1899         }
1900
1901         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1902         MidiStreamView* const view = mtv->midi_view();
1903
1904         view->update_note_range (note->note());
1905         return event;
1906 }
1907
1908 void
1909 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1910                                Temporal::Beats pos, Temporal::Beats len)
1911 {
1912         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1913
1914         /* potentially extend region to hold new note */
1915
1916         samplepos_t end_sample = source_beats_to_absolute_samples (new_note->end_time());
1917         samplepos_t region_end = _region->last_sample();
1918
1919         if (end_sample > region_end) {
1920                 /* XX sets length in beats from audio space. make musical */
1921                 _region->set_length (end_sample - _region->position(), 0);
1922         }
1923
1924         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1925         MidiStreamView* const view = mtv->midi_view();
1926
1927         view->update_note_range(new_note->note());
1928
1929         _marked_for_selection.clear ();
1930
1931         start_note_diff_command (_("step add"));
1932
1933         clear_editor_note_selection ();
1934         note_diff_add_note (new_note, true, false);
1935
1936         apply_diff();
1937
1938         // last_step_edit_note = new_note;
1939 }
1940
1941 void
1942 MidiRegionView::step_sustain (Temporal::Beats beats)
1943 {
1944         change_note_lengths (false, false, beats, false, true);
1945 }
1946
1947 /** Add a new patch change flag to the canvas.
1948  * @param patch the patch change to add
1949  * @param the text to display in the flag
1950  * @param active_channel true to display the flag as on an active channel, false to grey it out for an inactive channel.
1951  */
1952 void
1953 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext, bool /*active_channel*/)
1954 {
1955         samplecnt_t region_samples = source_beats_to_region_samples (patch->time());
1956         const double x = trackview.editor().sample_to_pixel (region_samples);
1957
1958         double const height = midi_stream_view()->contents_height();
1959
1960         // CAIROCANVAS: active_channel info removed from PatcChange constructor
1961         // so we need to do something more sophisticated to keep its color
1962         // appearance (MidiPatchChangeFill/MidiPatchChangeInactiveChannelFill)
1963         // up to date.
1964         boost::shared_ptr<PatchChange> patch_change = boost::shared_ptr<PatchChange>(
1965                 new PatchChange(*this, group,
1966                                 displaytext,
1967                                 height,
1968                                 x, 1.0,
1969                                 instrument_info(),
1970                                 patch,
1971                                 _patch_change_outline,
1972                                 _patch_change_fill)
1973                 );
1974
1975         if (patch_change->item().width() < _pixel_width) {
1976                 // Show unless patch change is beyond the region bounds
1977                 if (region_samples < 0 || region_samples >= _region->length()) {
1978                         patch_change->hide();
1979                 } else {
1980                         patch_change->show();
1981                 }
1982         } else {
1983                 patch_change->hide ();
1984         }
1985
1986         _patch_changes.insert (make_pair (patch, patch_change));
1987 }
1988
1989 void
1990 MidiRegionView::remove_canvas_patch_change (PatchChange* pc)
1991 {
1992         /* remove the canvas item */
1993         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1994                 if (x->second->patch() == pc->patch()) {
1995                         _patch_changes.erase (x);
1996                         break;
1997                 }
1998         }
1999 }
2000
2001 MIDI::Name::PatchPrimaryKey
2002 MidiRegionView::patch_change_to_patch_key (MidiModel::PatchChangePtr p)
2003 {
2004         return MIDI::Name::PatchPrimaryKey (p->program(), p->bank());
2005 }
2006
2007 /// Return true iff @p pc applies to the given time on the given channel.
2008 static bool
2009 patch_applies (const ARDOUR::MidiModel::constPatchChangePtr pc, Temporal::Beats time, uint8_t channel)
2010 {
2011         return pc->time() <= time && pc->channel() == channel;
2012 }
2013
2014 void
2015 MidiRegionView::get_patch_key_at (Temporal::Beats time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key) const
2016 {
2017         // The earliest event not before time
2018         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
2019
2020         // Go backwards until we find the latest PC for this channel, or the start
2021         while (i != _model->patch_changes().begin() &&
2022                (i == _model->patch_changes().end() ||
2023                 !patch_applies(*i, time, channel))) {
2024                 --i;
2025         }
2026
2027         if (i != _model->patch_changes().end() && patch_applies(*i, time, channel)) {
2028                 key.set_bank((*i)->bank());
2029                 key.set_program((*i)->program ());
2030         } else {
2031                 key.set_bank(0);
2032                 key.set_program(0);
2033         }
2034 }
2035
2036 void
2037 MidiRegionView::change_patch_change (PatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
2038 {
2039         string name = _("alter patch change");
2040         trackview.editor().begin_reversible_command (name);
2041
2042         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2043
2044         if (pc.patch()->program() != new_patch.program()) {
2045                 c->change_program (pc.patch (), new_patch.program());
2046         }
2047
2048         int const new_bank = new_patch.bank();
2049         if (pc.patch()->bank() != new_bank) {
2050                 c->change_bank (pc.patch (), new_bank);
2051         }
2052
2053         _model->apply_command (*trackview.session(), c);
2054         trackview.editor().commit_reversible_command ();
2055
2056         remove_canvas_patch_change (&pc);
2057         display_patch_changes ();
2058 }
2059
2060 void
2061 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Temporal::Beats> & new_change)
2062 {
2063         string name = _("alter patch change");
2064         trackview.editor().begin_reversible_command (name);
2065         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2066
2067         if (old_change->time() != new_change.time()) {
2068                 c->change_time (old_change, new_change.time());
2069         }
2070
2071         if (old_change->channel() != new_change.channel()) {
2072                 c->change_channel (old_change, new_change.channel());
2073         }
2074
2075         if (old_change->program() != new_change.program()) {
2076                 c->change_program (old_change, new_change.program());
2077         }
2078
2079         if (old_change->bank() != new_change.bank()) {
2080                 c->change_bank (old_change, new_change.bank());
2081         }
2082
2083         _model->apply_command (*trackview.session(), c);
2084         trackview.editor().commit_reversible_command ();
2085
2086         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
2087                 if (x->second->patch() == old_change) {
2088                         _patch_changes.erase (x);
2089                         break;
2090                 }
2091         }
2092
2093         display_patch_changes ();
2094 }
2095
2096 /** Add a patch change to the region.
2097  *  @param t Time in samples relative to region position
2098  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
2099  *  MidiTimeAxisView::get_channel_for_add())
2100  */
2101 void
2102 MidiRegionView::add_patch_change (samplecnt_t t, Evoral::PatchChange<Temporal::Beats> const & patch)
2103 {
2104         string name = _("add patch change");
2105
2106         trackview.editor().begin_reversible_command (name);
2107         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (name);
2108         c->add (MidiModel::PatchChangePtr (
2109                         new Evoral::PatchChange<Temporal::Beats> (
2110                                 absolute_samples_to_source_beats (_region->position() + t),
2111                                 patch.channel(), patch.program(), patch.bank()
2112                                 )
2113                         )
2114                 );
2115
2116         _model->apply_command (*trackview.session(), c);
2117         trackview.editor().commit_reversible_command ();
2118
2119         display_patch_changes ();
2120 }
2121
2122 void
2123 MidiRegionView::move_patch_change (PatchChange& pc, Temporal::Beats t)
2124 {
2125         trackview.editor().begin_reversible_command (_("move patch change"));
2126         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
2127         c->change_time (pc.patch (), t);
2128         _model->apply_command (*trackview.session(), c);
2129         trackview.editor().commit_reversible_command ();
2130
2131         display_patch_changes ();
2132 }
2133
2134 void
2135 MidiRegionView::delete_patch_change (PatchChange* pc)
2136 {
2137         trackview.editor().begin_reversible_command (_("delete patch change"));
2138
2139         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
2140         c->remove (pc->patch ());
2141         _model->apply_command (*trackview.session(), c);
2142         trackview.editor().commit_reversible_command ();
2143
2144         remove_canvas_patch_change (pc);
2145         display_patch_changes ();
2146 }
2147
2148 void
2149 MidiRegionView::step_patch (PatchChange& patch, bool bank, int delta)
2150 {
2151         MIDI::Name::PatchPrimaryKey key = patch_change_to_patch_key(patch.patch());
2152         if (bank) {
2153                 key.set_bank(key.bank() + delta);
2154         } else {
2155                 key.set_program(key.program() + delta);
2156         }
2157         change_patch_change(patch, key);
2158 }
2159
2160 void
2161 MidiRegionView::note_deleted (NoteBase* cne)
2162 {
2163         if (_entered_note && cne == _entered_note) {
2164                 _entered_note = 0;
2165         }
2166
2167         if (_selection.empty()) {
2168                 return;
2169         }
2170
2171         _selection.erase (cne);
2172 }
2173
2174 void
2175 MidiRegionView::delete_selection()
2176 {
2177         if (_selection.empty()) {
2178                 return;
2179         }
2180
2181         if (trackview.editor().drags()->active()) {
2182                 return;
2183         }
2184
2185         start_note_diff_command (_("delete selection"));
2186
2187         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2188                 if ((*i)->selected()) {
2189                         _note_diff_command->remove((*i)->note());
2190                 }
2191         }
2192
2193         _selection.clear();
2194
2195         apply_diff ();
2196
2197         hide_verbose_cursor ();
2198 }
2199
2200 void
2201 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
2202 {
2203         start_note_diff_command (_("delete note"));
2204         _note_diff_command->remove (n);
2205         apply_diff ();
2206
2207         hide_verbose_cursor ();
2208 }
2209
2210 void
2211 MidiRegionView::clear_editor_note_selection ()
2212 {
2213         DEBUG_TRACE(DEBUG::Selection, "MRV::clear_editor_note_selection\n");
2214         PublicEditor& editor(trackview.editor());
2215         editor.get_selection().clear_midi_notes();
2216 }
2217
2218 void
2219 MidiRegionView::clear_selection ()
2220 {
2221         clear_selection_internal();
2222         PublicEditor& editor(trackview.editor());
2223         editor.get_selection().remove(this);
2224 }
2225
2226 void
2227 MidiRegionView::clear_selection_internal ()
2228 {
2229         DEBUG_TRACE(DEBUG::Selection, "MRV::clear_selection_internal\n");
2230
2231         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2232                 (*i)->set_selected(false);
2233                 (*i)->hide_velocity();
2234         }
2235         _selection.clear();
2236
2237         if (_entered) {
2238                 // Clearing selection entirely, ungrab keyboard
2239                 Keyboard::magic_widget_drop_focus();
2240                 _grabbed_keyboard = false;
2241         }
2242 }
2243
2244 void
2245 MidiRegionView::unique_select(NoteBase* ev)
2246 {
2247         clear_editor_note_selection();
2248         add_to_selection(ev);
2249 }
2250
2251 void
2252 MidiRegionView::select_all_notes ()
2253 {
2254         clear_editor_note_selection ();
2255
2256         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2257                 add_to_selection (i->second);
2258         }
2259 }
2260
2261 void
2262 MidiRegionView::select_range (samplepos_t start, samplepos_t end)
2263 {
2264         clear_editor_note_selection ();
2265
2266         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2267                 samplepos_t t = source_beats_to_absolute_samples(i->first->time());
2268                 if (t >= start && t <= end) {
2269                         add_to_selection (i->second);
2270                 }
2271         }
2272 }
2273
2274 void
2275 MidiRegionView::invert_selection ()
2276 {
2277         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2278                 if (i->second->selected()) {
2279                         remove_from_selection(i->second);
2280                 } else {
2281                         add_to_selection (i->second);
2282                 }
2283         }
2284 }
2285
2286 /** Used for selection undo/redo.
2287     The requested notes most likely won't exist in the view until the next model redisplay.
2288 */
2289 void
2290 MidiRegionView::select_notes (list<Evoral::event_id_t> notes)
2291 {
2292         NoteBase* cne;
2293         list<Evoral::event_id_t>::iterator n;
2294
2295         for (n = notes.begin(); n != notes.end(); ++n) {
2296                 if ((cne = find_canvas_note(*n)) != 0) {
2297                         add_to_selection (cne);
2298                 } else {
2299                         _pending_note_selection.insert(*n);
2300                 }
2301         }
2302 }
2303
2304 void
2305 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
2306 {
2307         bool have_selection = !_selection.empty();
2308         uint8_t low_note = 127;
2309         uint8_t high_note = 0;
2310         MidiModel::Notes& notes (_model->notes());
2311         _optimization_iterator = _events.begin();
2312
2313         if (extend && !have_selection) {
2314                 extend = false;
2315         }
2316
2317         /* scan existing selection to get note range */
2318
2319         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2320                 if ((*i)->note()->note() < low_note) {
2321                         low_note = (*i)->note()->note();
2322                 }
2323                 if ((*i)->note()->note() > high_note) {
2324                         high_note = (*i)->note()->note();
2325                 }
2326         }
2327
2328         if (!add) {
2329                 clear_editor_note_selection ();
2330
2331                 if (!extend && (low_note == high_note) && (high_note == notenum)) {
2332                         /* only note previously selected is the one we are
2333                          * reselecting. treat this as cancelling the selection.
2334                          */
2335                         return;
2336                 }
2337         }
2338
2339         if (extend) {
2340                 low_note = min (low_note, notenum);
2341                 high_note = max (high_note, notenum);
2342         }
2343
2344         _no_sound_notes = true;
2345
2346         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2347
2348                 boost::shared_ptr<NoteType> note (*n);
2349                 NoteBase* cne;
2350                 bool select = false;
2351
2352                 if (((1 << note->channel()) & channel_mask) != 0) {
2353                         if (extend) {
2354                                 if ((note->note() >= low_note && note->note() <= high_note)) {
2355                                         select = true;
2356                                 }
2357                         } else if (note->note() == notenum) {
2358                                 select = true;
2359                         }
2360                 }
2361
2362                 if (select) {
2363                         if ((cne = find_canvas_note (note)) != 0) {
2364                                 // extend is false because we've taken care of it,
2365                                 // since it extends by time range, not pitch.
2366                                 note_selected (cne, add, false);
2367                         }
2368                 }
2369
2370                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
2371
2372         }
2373
2374         _no_sound_notes = false;
2375 }
2376
2377 void
2378 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
2379 {
2380         MidiModel::Notes& notes (_model->notes());
2381         _optimization_iterator = _events.begin();
2382
2383         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2384
2385                 boost::shared_ptr<NoteType> note (*n);
2386                 NoteBase* cne;
2387
2388                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
2389                         if ((cne = find_canvas_note (note)) != 0) {
2390                                 if (cne->selected()) {
2391                                         note_deselected (cne);
2392                                 } else {
2393                                         note_selected (cne, true, false);
2394                                 }
2395                         }
2396                 }
2397         }
2398 }
2399
2400 void
2401 MidiRegionView::note_selected (NoteBase* ev, bool add, bool extend)
2402 {
2403         if (!add) {
2404                 clear_editor_note_selection();
2405                 add_to_selection (ev);
2406         }
2407
2408         if (!extend) {
2409
2410                 if (!ev->selected()) {
2411                         add_to_selection (ev);
2412                 }
2413
2414         } else {
2415                 /* find end of latest note selected, select all between that and the start of "ev" */
2416
2417                 Temporal::Beats earliest = std::numeric_limits<Temporal::Beats>::max();
2418                 Temporal::Beats latest   = Temporal::Beats();
2419
2420                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2421                         if ((*i)->note()->end_time() > latest) {
2422                                 latest = (*i)->note()->end_time();
2423                         }
2424                         if ((*i)->note()->time() < earliest) {
2425                                 earliest = (*i)->note()->time();
2426                         }
2427                 }
2428
2429                 if (ev->note()->end_time() > latest) {
2430                         latest = ev->note()->end_time();
2431                 }
2432
2433                 if (ev->note()->time() < earliest) {
2434                         earliest = ev->note()->time();
2435                 }
2436
2437                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2438
2439                         /* find notes entirely within OR spanning the earliest..latest range */
2440
2441                         if ((i->first->time() >= earliest && i->first->end_time() <= latest) ||
2442                             (i->first->time() <= earliest && i->first->end_time() >= latest)) {
2443                                 add_to_selection (i->second);
2444                         }
2445                 }
2446         }
2447 }
2448
2449 void
2450 MidiRegionView::note_deselected(NoteBase* ev)
2451 {
2452         remove_from_selection (ev);
2453 }
2454
2455 void
2456 MidiRegionView::update_drag_selection(samplepos_t start, samplepos_t end, double gy0, double gy1, bool extend)
2457 {
2458         PublicEditor& editor = trackview.editor();
2459
2460         // Convert to local coordinates
2461         const samplepos_t p  = _region->position();
2462         const double     y  = midi_view()->y_position();
2463         const double     x0 = editor.sample_to_pixel(max((samplepos_t)0, start - p));
2464         const double     x1 = editor.sample_to_pixel(max((samplepos_t)0, end - p));
2465         const double     y0 = max(0.0, gy0 - y);
2466         const double     y1 = max(0.0, gy1 - y);
2467
2468         // TODO: Make this faster by storing the last updated selection rect, and only
2469         // adjusting things that are in the area that appears/disappeared.
2470         // We probably need a tree to be able to find events in O(log(n)) time.
2471
2472         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2473                 if (i->second->x0() < x1 && i->second->x1() > x0 && i->second->y0() < y1 && i->second->y1() > y0) {
2474                         // Rectangles intersect
2475                         if (!i->second->selected()) {
2476                                 add_to_selection (i->second);
2477                         }
2478                 } else if (i->second->selected() && !extend) {
2479                         // Rectangles do not intersect
2480                         remove_from_selection (i->second);
2481                 }
2482         }
2483
2484         typedef RouteTimeAxisView::AutomationTracks ATracks;
2485         typedef std::list<Selectable*>              Selectables;
2486
2487         /* Add control points to selection. */
2488         const ATracks& atracks = midi_view()->automation_tracks();
2489         Selectables    selectables;
2490         editor.get_selection().clear_points();
2491         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
2492                 a->second->get_selectables(start, end, gy0, gy1, selectables);
2493                 for (Selectables::const_iterator s = selectables.begin(); s != selectables.end(); ++s) {
2494                         ControlPoint* cp = dynamic_cast<ControlPoint*>(*s);
2495                         if (cp) {
2496                                 editor.get_selection().add(cp);
2497                         }
2498                 }
2499                 a->second->set_selected_points(editor.get_selection().points);
2500         }
2501 }
2502
2503 void
2504 MidiRegionView::update_vertical_drag_selection (double y1, double y2, bool extend)
2505 {
2506         if (y1 > y2) {
2507                 swap (y1, y2);
2508         }
2509
2510         // TODO: Make this faster by storing the last updated selection rect, and only
2511         // adjusting things that are in the area that appears/disappeared.
2512         // We probably need a tree to be able to find events in O(log(n)) time.
2513
2514         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2515                 if ((i->second->y1() >= y1 && i->second->y1() <= y2)) {
2516                         // within y- (note-) range
2517                         if (!i->second->selected()) {
2518                                 add_to_selection (i->second);
2519                         }
2520                 } else if (i->second->selected() && !extend) {
2521                         remove_from_selection (i->second);
2522                 }
2523         }
2524 }
2525
2526 void
2527 MidiRegionView::remove_from_selection (NoteBase* ev)
2528 {
2529         Selection::iterator i = _selection.find (ev);
2530
2531         if (i != _selection.end()) {
2532                 _selection.erase (i);
2533                 if (_selection.empty() && _grabbed_keyboard) {
2534                         // Ungrab keyboard
2535                         Keyboard::magic_widget_drop_focus();
2536                         _grabbed_keyboard = false;
2537                 }
2538         }
2539
2540         ev->set_selected (false);
2541         ev->hide_velocity ();
2542
2543         if (_selection.empty()) {
2544                 PublicEditor& editor (trackview.editor());
2545                 editor.get_selection().remove (this);
2546         }
2547 }
2548
2549 void
2550 MidiRegionView::add_to_selection (NoteBase* ev)
2551 {
2552         const bool selection_was_empty = _selection.empty();
2553
2554         if (_selection.insert (ev).second) {
2555                 ev->set_selected (true);
2556                 start_playing_midi_note ((ev)->note());
2557                 if (selection_was_empty && _entered) {
2558                         // Grab keyboard for moving notes with arrow keys
2559                         Keyboard::magic_widget_grab_focus();
2560                         _grabbed_keyboard = true;
2561                 }
2562         }
2563
2564         if (selection_was_empty) {
2565                 PublicEditor& editor (trackview.editor());
2566                 editor.get_selection().add (this);
2567         }
2568 }
2569
2570 Temporal::Beats
2571 MidiRegionView::earliest_in_selection ()
2572 {
2573         Temporal::Beats earliest = std::numeric_limits<Temporal::Beats>::max();
2574
2575         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2576                 if ((*i)->note()->time() < earliest) {
2577                         earliest = (*i)->note()->time();
2578                 }
2579         }
2580
2581         return earliest;
2582 }
2583
2584 void
2585 MidiRegionView::move_selection(double dx_qn, double dy, double cumulative_dy)
2586 {
2587         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2588         Editor* editor = dynamic_cast<Editor*> (&trackview.editor());
2589         TempoMap& tmap (editor->session()->tempo_map());
2590         PossibleChord to_play;
2591         Temporal::Beats earliest = earliest_in_selection();
2592
2593         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2594                 NoteBase* n = *i;
2595                 if (n->note()->time() == earliest) {
2596                         to_play.push_back (n->note());
2597                 }
2598                 double const note_time_qn = session_relative_qn (n->note()->time().to_double());
2599                 double dx = 0.0;
2600                 if (midi_view()->note_mode() == Sustained) {
2601                         dx = editor->sample_to_pixel_unrounded (tmap.sample_at_quarter_note (note_time_qn + dx_qn))
2602                                 - n->item()->item_to_canvas (ArdourCanvas::Duple (n->x0(), 0)).x;
2603                 } else {
2604                         /* Hit::x0() is offset by _position.x, unlike Note::x0() */
2605                         Hit* hit = dynamic_cast<Hit*>(n);
2606                         if (hit) {
2607                                 dx = editor->sample_to_pixel_unrounded (tmap.sample_at_quarter_note (note_time_qn + dx_qn))
2608                                         - n->item()->item_to_canvas (ArdourCanvas::Duple (((hit->x0() + hit->x1()) / 2.0) - hit->position().x, 0)).x;
2609                         }
2610                 }
2611
2612                 (*i)->move_event(dx, dy);
2613
2614                 /* update length */
2615                 if (midi_view()->note_mode() == Sustained) {
2616                         Note* sus = dynamic_cast<Note*> (*i);
2617                         double const len_dx = editor->sample_to_pixel_unrounded (
2618                                 tmap.sample_at_quarter_note (note_time_qn + dx_qn + n->note()->length().to_double()));
2619
2620                         sus->set_x1 (n->item()->canvas_to_item (ArdourCanvas::Duple (len_dx, 0)).x);
2621                 }
2622         }
2623
2624         if (dy && !_selection.empty() && !_no_sound_notes && UIConfiguration::instance().get_sound_midi_notes()) {
2625
2626                 if (to_play.size() > 1) {
2627
2628                         PossibleChord shifted;
2629
2630                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2631                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2632                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2633                                 shifted.push_back (moved_note);
2634                         }
2635
2636                         start_playing_midi_chord (shifted);
2637
2638                 } else if (!to_play.empty()) {
2639
2640                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2641                         moved_note->set_note (moved_note->note() + cumulative_dy);
2642                         start_playing_midi_note (moved_note);
2643                 }
2644         }
2645 }
2646
2647 NoteBase*
2648 MidiRegionView::copy_selection (NoteBase* primary)
2649 {
2650         _copy_drag_events.clear ();
2651
2652         if (_selection.empty()) {
2653                 return 0;
2654         }
2655
2656         NoteBase* note;
2657         NoteBase* ret = 0;
2658
2659         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2660                 boost::shared_ptr<NoteType> g (new NoteType (*((*i)->note())));
2661                 if (midi_view()->note_mode() == Sustained) {
2662                         Note* n = new Note (*this, _note_group, g);
2663                         update_sustained (n, false);
2664                         note = n;
2665                 } else {
2666                         Hit* h = new Hit (*this, _note_group, 10, g);
2667                         update_hit (h, false);
2668                         note = h;
2669                 }
2670
2671                 if ((*i) == primary) {
2672                         ret = note;
2673                 }
2674
2675                 _copy_drag_events.push_back (note);
2676         }
2677
2678         return ret;
2679 }
2680
2681 void
2682 MidiRegionView::move_copies (double dx_qn, double dy, double cumulative_dy)
2683 {
2684         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2685         Editor* editor = dynamic_cast<Editor*> (&trackview.editor());
2686         TempoMap& tmap (editor->session()->tempo_map());
2687         PossibleChord to_play;
2688         Temporal::Beats earliest = earliest_in_selection();
2689
2690         for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end(); ++i) {
2691                 NoteBase* n = *i;
2692                 if (n->note()->time() == earliest) {
2693                         to_play.push_back (n->note());
2694                 }
2695                 double const note_time_qn = session_relative_qn (n->note()->time().to_double());
2696                 double dx = 0.0;
2697                 if (midi_view()->note_mode() == Sustained) {
2698                         dx = editor->sample_to_pixel_unrounded (tmap.sample_at_quarter_note (note_time_qn + dx_qn))
2699                                 - n->item()->item_to_canvas (ArdourCanvas::Duple (n->x0(), 0)).x;
2700                 } else {
2701                         Hit* hit = dynamic_cast<Hit*>(n);
2702                         if (hit) {
2703                                 dx = editor->sample_to_pixel_unrounded (tmap.sample_at_quarter_note (note_time_qn + dx_qn))
2704                                         - n->item()->item_to_canvas (ArdourCanvas::Duple (((hit->x0() + hit->x1()) / 2.0) - hit->position().x, 0)).x;
2705                         }
2706                 }
2707
2708                 (*i)->move_event(dx, dy);
2709
2710                 if (midi_view()->note_mode() == Sustained) {
2711                         Note* sus = dynamic_cast<Note*> (*i);
2712                         double const len_dx = editor->sample_to_pixel_unrounded (
2713                                 tmap.sample_at_quarter_note (note_time_qn + dx_qn + n->note()->length().to_double()));
2714
2715                         sus->set_x1 (n->item()->canvas_to_item (ArdourCanvas::Duple (len_dx, 0)).x);
2716                 }
2717         }
2718
2719         if (dy && !_copy_drag_events.empty() && !_no_sound_notes && UIConfiguration::instance().get_sound_midi_notes()) {
2720
2721                 if (to_play.size() > 1) {
2722
2723                         PossibleChord shifted;
2724
2725                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2726                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2727                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2728                                 shifted.push_back (moved_note);
2729                         }
2730
2731                         start_playing_midi_chord (shifted);
2732
2733                 } else if (!to_play.empty()) {
2734
2735                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2736                         moved_note->set_note (moved_note->note() + cumulative_dy);
2737                         start_playing_midi_note (moved_note);
2738                 }
2739         }
2740 }
2741
2742 void
2743 MidiRegionView::note_dropped(NoteBase *, double d_qn, int8_t dnote, bool copy)
2744 {
2745         uint8_t lowest_note_in_selection  = 127;
2746         uint8_t highest_note_in_selection = 0;
2747         uint8_t highest_note_difference   = 0;
2748
2749         if (!copy) {
2750                 // find highest and lowest notes first
2751
2752                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2753                         uint8_t pitch = (*i)->note()->note();
2754                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2755                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2756                 }
2757
2758                 /*
2759                   cerr << "dnote: " << (int) dnote << endl;
2760                   cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2761                   << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2762                   cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2763                   << int(highest_note_in_selection) << endl;
2764                   cerr << "selection size: " << _selection.size() << endl;
2765                   cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2766                 */
2767
2768                 // Make sure the note pitch does not exceed the MIDI standard range
2769                 if (highest_note_in_selection + dnote > 127) {
2770                         highest_note_difference = highest_note_in_selection - 127;
2771                 }
2772
2773                 start_note_diff_command (_("move notes"));
2774
2775                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2776
2777                         Temporal::Beats new_time = Temporal::Beats ((*i)->note()->time().to_double() + d_qn);
2778
2779                         if (new_time < 0) {
2780                                 continue;
2781                         }
2782
2783                         note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2784
2785                         uint8_t original_pitch = (*i)->note()->note();
2786                         uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2787
2788                         // keep notes in standard midi range
2789                         clamp_to_0_127(new_pitch);
2790
2791                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2792                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2793
2794                         note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2795                 }
2796         } else {
2797
2798                 clear_editor_note_selection ();
2799
2800                 for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end(); ++i) {
2801                         uint8_t pitch = (*i)->note()->note();
2802                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2803                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2804                 }
2805
2806                 // Make sure the note pitch does not exceed the MIDI standard range
2807                 if (highest_note_in_selection + dnote > 127) {
2808                         highest_note_difference = highest_note_in_selection - 127;
2809                 }
2810
2811                 start_note_diff_command (_("copy notes"));
2812
2813                 for (CopyDragEvents::iterator i = _copy_drag_events.begin(); i != _copy_drag_events.end() ; ++i) {
2814
2815                         /* update time */
2816                         Temporal::Beats new_time = Temporal::Beats ((*i)->note()->time().to_double() + d_qn);
2817
2818                         if (new_time < 0) {
2819                                 continue;
2820                         }
2821
2822                         (*i)->note()->set_time (new_time);
2823
2824                         /* update pitch */
2825
2826                         uint8_t original_pitch = (*i)->note()->note();
2827                         uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2828
2829                         (*i)->note()->set_note (new_pitch);
2830
2831                         // keep notes in standard midi range
2832                         clamp_to_0_127(new_pitch);
2833
2834                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2835                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2836
2837                         note_diff_add_note ((*i)->note(), true);
2838
2839                         delete *i;
2840                 }
2841
2842                 _copy_drag_events.clear ();
2843         }
2844
2845         apply_diff (false, copy);
2846
2847         // care about notes being moved beyond the upper/lower bounds on the canvas
2848         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2849             highest_note_in_selection > midi_stream_view()->highest_note()) {
2850                 midi_stream_view()->set_note_range (MidiStreamView::ContentsRange);
2851         }
2852 }
2853
2854 /** @param x Pixel relative to the region position.
2855  *  @param ensure_snap defaults to false. true = snap always, ignoring snap mode and magnetic snap.
2856  *  Used for inverting the snap logic with key modifiers and snap delta calculation.
2857  *  @return Snapped sample relative to the region position.
2858  */
2859 samplepos_t
2860 MidiRegionView::snap_pixel_to_sample(double x, bool ensure_snap)
2861 {
2862         PublicEditor& editor (trackview.editor());
2863         return snap_sample_to_sample (editor.pixel_to_sample (x), ensure_snap).sample;
2864 }
2865
2866 /** @param x Pixel relative to the region position.
2867  *  @param ensure_snap defaults to false. true = ignore magnetic snap and snap mode (used for snap delta calculation).
2868  *  @return Snapped pixel relative to the region position.
2869  */
2870 double
2871 MidiRegionView::snap_to_pixel(double x, bool ensure_snap)
2872 {
2873         return (double) trackview.editor().sample_to_pixel(snap_pixel_to_sample(x, ensure_snap));
2874 }
2875
2876 double
2877 MidiRegionView::get_position_pixels()
2878 {
2879         samplepos_t region_sample = get_position();
2880         return trackview.editor().sample_to_pixel(region_sample);
2881 }
2882
2883 double
2884 MidiRegionView::get_end_position_pixels()
2885 {
2886         samplepos_t sample = get_position() + get_duration ();
2887         return trackview.editor().sample_to_pixel(sample);
2888 }
2889
2890 samplepos_t
2891 MidiRegionView::source_beats_to_absolute_samples(Temporal::Beats beats) const
2892 {
2893         /* the time converter will return the sample corresponding to `beats'
2894            relative to the start of the source. The start of the source
2895            is an implied position given by region->position - region->start
2896         */
2897         const samplepos_t source_start = _region->position() - _region->start();
2898         return  source_start +  _source_relative_time_converter.to (beats);
2899 }
2900
2901 Temporal::Beats
2902 MidiRegionView::absolute_samples_to_source_beats(samplepos_t samples) const
2903 {
2904         /* the `samples' argument needs to be converted into a sample count
2905            relative to the start of the source before being passed in to the
2906            converter.
2907         */
2908         const samplepos_t source_start = _region->position() - _region->start();
2909         return  _source_relative_time_converter.from (samples - source_start);
2910 }
2911
2912 samplepos_t
2913 MidiRegionView::region_beats_to_region_samples(Temporal::Beats beats) const
2914 {
2915         return _region_relative_time_converter.to(beats);
2916 }
2917
2918 Temporal::Beats
2919 MidiRegionView::region_samples_to_region_beats(samplepos_t samples) const
2920 {
2921         return _region_relative_time_converter.from(samples);
2922 }
2923
2924 double
2925 MidiRegionView::region_samples_to_region_beats_double (samplepos_t samples) const
2926 {
2927         return _region_relative_time_converter_double.from(samples);
2928 }
2929
2930 void
2931 MidiRegionView::begin_resizing (bool /*at_front*/)
2932 {
2933         _resize_data.clear();
2934
2935         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2936                 Note *note = dynamic_cast<Note*> (*i);
2937
2938                 // only insert CanvasNotes into the map
2939                 if (note) {
2940                         NoteResizeData *resize_data = new NoteResizeData();
2941                         resize_data->note = note;
2942
2943                         // create a new SimpleRect from the note which will be the resize preview
2944                         ArdourCanvas::Rectangle *resize_rect = new ArdourCanvas::Rectangle (_note_group,
2945                                                                                             ArdourCanvas::Rect (note->x0(), note->y0(), note->x0(), note->y1()));
2946
2947                         // calculate the colors: get the color settings
2948                         uint32_t fill_color = NoteBase::meter_style_fill_color (note->note()->velocity(), true);
2949
2950                         // make the resize preview notes more transparent and bright
2951                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2952
2953                         // calculate color based on note velocity
2954                         resize_rect->set_fill_color (UINT_INTERPOLATE(
2955                                 NoteBase::meter_style_fill_color(note->note()->velocity(), note->selected()),
2956                                 fill_color,
2957                                 0.85));
2958
2959                         resize_rect->set_outline_color (NoteBase::calculate_outline (
2960                                                                 UIConfiguration::instance().color ("midi note selected outline")));
2961
2962                         resize_data->resize_rect = resize_rect;
2963                         _resize_data.push_back(resize_data);
2964                 }
2965         }
2966 }
2967
2968 /** Update resizing notes while user drags.
2969  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2970  * @param at_front which end of the note (true == note on, false == note off)
2971  * @param delta_x change in mouse position since the start of the drag
2972  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2973  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2974  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2975  * as the \a primary note.
2976  * @param snap_delta snap offset of the primary note in pixels. used in SnapRelative SnapDelta mode.
2977  * @param with_snap true if snap is to be used to determine the position, false if no snap is to be used.
2978  */
2979 void
2980 MidiRegionView::update_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative, double snap_delta, bool with_snap)
2981 {
2982         TempoMap& tmap (trackview.session()->tempo_map());
2983         bool cursor_set = false;
2984         bool const ensure_snap = trackview.editor().snap_mode () != SnapMagnetic;
2985
2986         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2987                 ArdourCanvas::Rectangle* resize_rect = (*i)->resize_rect;
2988                 Note* canvas_note = (*i)->note;
2989                 double current_x;
2990
2991                 if (at_front) {
2992                         if (relative) {
2993                                 current_x = canvas_note->x0() + delta_x + snap_delta;
2994                         } else {
2995                                 current_x = primary->x0() + delta_x + snap_delta;
2996                         }
2997                 } else {
2998                         if (relative) {
2999                                 current_x = canvas_note->x1() + delta_x + snap_delta;
3000                         } else {
3001                                 current_x = primary->x1() + delta_x + snap_delta;
3002                         }
3003                 }
3004
3005                 if (current_x < 0) {
3006                         /* This works even with snapping because RegionView::snap_sample_to_sample()
3007                          * snaps forward if the snapped sample is before the beginning of the region
3008                          */
3009                         current_x = 0;
3010                 }
3011                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
3012                         current_x = trackview.editor().sample_to_pixel(_region->length());
3013                 }
3014
3015                 if (at_front) {
3016                         if (with_snap) {
3017                                 resize_rect->set_x0 (snap_to_pixel (current_x, ensure_snap) - snap_delta);
3018                         } else {
3019                                 resize_rect->set_x0 (current_x - snap_delta);
3020                         }
3021                         resize_rect->set_x1 (canvas_note->x1());
3022                 } else {
3023                         if (with_snap) {
3024                                 resize_rect->set_x1 (snap_to_pixel (current_x, ensure_snap) - snap_delta);
3025                         } else {
3026                                 resize_rect->set_x1 (current_x - snap_delta);
3027                         }
3028                         resize_rect->set_x0 (canvas_note->x0());
3029                 }
3030
3031                 if (!cursor_set) {
3032                         /* Convert snap delta from pixels to beats. */
3033                         samplepos_t snap_delta_samps = trackview.editor().pixel_to_sample (snap_delta);
3034                         double snap_delta_beats = 0.0;
3035                         int sign = 1;
3036
3037                         /* negative beat offsets aren't allowed */
3038                         if (snap_delta_samps > 0) {
3039                                 snap_delta_beats = region_samples_to_region_beats_double (snap_delta_samps);
3040                         } else if (snap_delta_samps < 0) {
3041                                 snap_delta_beats = region_samples_to_region_beats_double (- snap_delta_samps);
3042                                 sign = -1;
3043                         }
3044
3045                         double  snapped_x;
3046                         int32_t divisions = 0;
3047
3048                         if (with_snap) {
3049                                 snapped_x = snap_pixel_to_sample (current_x, ensure_snap);
3050                                 divisions = trackview.editor().get_grid_music_divisions (0);
3051                         } else {
3052                                 snapped_x = trackview.editor ().pixel_to_sample (current_x);
3053                         }
3054
3055                         const Temporal::Beats beats = Temporal::Beats (tmap.exact_beat_at_sample (snapped_x + midi_region()->position(), divisions)
3056                                                                        - midi_region()->beat())
3057                                                       + midi_region()->start_beats();
3058
3059                         Temporal::Beats len         = Temporal::Beats();
3060
3061                         if (at_front) {
3062                                 if (beats < canvas_note->note()->end_time()) {
3063                                         len = canvas_note->note()->time() - beats + (sign * snap_delta_beats);
3064                                         len += canvas_note->note()->length();
3065                                 }
3066                         } else {
3067                                 if (beats >= canvas_note->note()->time()) {
3068                                         len = beats - canvas_note->note()->time() - (sign * snap_delta_beats);
3069                                 }
3070                         }
3071
3072                         len = std::max(Temporal::Beats(1 / 512.0), len);
3073
3074                         char buf[16];
3075                         snprintf (buf, sizeof (buf), "%.3g beats", len.to_double());
3076                         show_verbose_cursor (buf, 0, 0);
3077
3078                         cursor_set = true;
3079
3080                         trackview.editor().set_snapped_cursor_position ( snapped_x + midi_region()->position() );
3081                 }
3082
3083         }
3084 }
3085
3086
3087 /** Finish resizing notes when the user releases the mouse button.
3088  *  Parameters the same as for \a update_resizing().
3089  */
3090 void
3091 MidiRegionView::commit_resizing (NoteBase* primary, bool at_front, double delta_x, bool relative, double snap_delta, bool with_snap)
3092 {
3093         _note_diff_command = _model->new_note_diff_command (_("resize notes"));
3094         TempoMap& tmap (trackview.session()->tempo_map());
3095
3096         /* XX why doesn't snap_pixel_to_sample() handle this properly? */
3097         bool const ensure_snap = trackview.editor().snap_mode () != SnapMagnetic;
3098
3099         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
3100                 Note*  canvas_note = (*i)->note;
3101                 ArdourCanvas::Rectangle*  resize_rect = (*i)->resize_rect;
3102
3103                 /* Get the new x position for this resize, which is in pixels relative
3104                  * to the region position.
3105                  */
3106
3107                 double current_x;
3108
3109                 if (at_front) {
3110                         if (relative) {
3111                                 current_x = canvas_note->x0() + delta_x + snap_delta;
3112                         } else {
3113                                 current_x = primary->x0() + delta_x + snap_delta;
3114                         }
3115                 } else {
3116                         if (relative) {
3117                                 current_x = canvas_note->x1() + delta_x + snap_delta;
3118                         } else {
3119                                 current_x = primary->x1() + delta_x + snap_delta;
3120                         }
3121                 }
3122
3123                 if (current_x < 0) {
3124                         current_x = 0;
3125                 }
3126                 if (current_x > trackview.editor().sample_to_pixel(_region->length())) {
3127                         current_x = trackview.editor().sample_to_pixel(_region->length());
3128                 }
3129
3130                 /* Convert snap delta from pixels to beats with sign. */
3131                 samplepos_t snap_delta_samps = trackview.editor().pixel_to_sample (snap_delta);
3132                 double snap_delta_beats = 0.0;
3133                 int sign = 1;
3134
3135                 if (snap_delta_samps > 0) {
3136                         snap_delta_beats = region_samples_to_region_beats_double (snap_delta_samps);
3137                 } else if (snap_delta_samps < 0) {
3138                         snap_delta_beats = region_samples_to_region_beats_double ( - snap_delta_samps);
3139                         sign = -1;
3140                 }
3141
3142                 uint32_t divisions = 0;
3143                 /* Convert the new x position to a sample within the source */
3144                 samplepos_t current_fr;
3145                 if (with_snap) {
3146                         current_fr = snap_pixel_to_sample (current_x, ensure_snap);
3147                         divisions = trackview.editor().get_grid_music_divisions (0);
3148                 } else {
3149                         current_fr = trackview.editor().pixel_to_sample (current_x);
3150                 }
3151
3152                 /* and then to beats */
3153                 const double e_qaf = tmap.exact_qn_at_sample (current_fr + midi_region()->position(), divisions);
3154                 const double quarter_note_start = _region->quarter_note() - midi_region()->start_beats();
3155                 const Temporal::Beats x_beats = Temporal::Beats (e_qaf - quarter_note_start);
3156
3157                 if (at_front && x_beats < canvas_note->note()->end_time()) {
3158                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, x_beats - (sign * snap_delta_beats));
3159                         Temporal::Beats len = canvas_note->note()->time() - x_beats + (sign * snap_delta_beats);
3160                         len += canvas_note->note()->length();
3161
3162                         if (!!len) {
3163                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
3164                         }
3165                 }
3166
3167                 if (!at_front) {
3168                         Temporal::Beats len = std::max(Temporal::Beats(1 / 512.0),
3169                                                      x_beats - canvas_note->note()->time() - (sign * snap_delta_beats));
3170                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
3171                 }
3172
3173                 delete resize_rect;
3174                 delete (*i);
3175         }
3176
3177         _resize_data.clear();
3178         apply_diff(true);
3179 }
3180
3181 void
3182 MidiRegionView::abort_resizing ()
3183 {
3184         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
3185                 delete (*i)->resize_rect;
3186                 delete *i;
3187         }
3188
3189         _resize_data.clear ();
3190 }
3191
3192 void
3193 MidiRegionView::change_note_velocity(NoteBase* event, int8_t velocity, bool relative)
3194 {
3195         uint8_t new_velocity;
3196
3197         if (relative) {
3198                 new_velocity = event->note()->velocity() + velocity;
3199                 clamp_to_0_127(new_velocity);
3200         } else {
3201                 new_velocity = velocity;
3202         }
3203
3204         event->set_selected (event->selected()); // change color
3205
3206         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
3207 }
3208
3209 void
3210 MidiRegionView::change_note_note (NoteBase* event, int8_t note, bool relative)
3211 {
3212         uint8_t new_note;
3213
3214         if (relative) {
3215                 new_note = event->note()->note() + note;
3216         } else {
3217                 new_note = note;
3218         }
3219
3220         clamp_to_0_127 (new_note);
3221         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
3222 }
3223
3224 void
3225 MidiRegionView::trim_note (NoteBase* event, Temporal::Beats front_delta, Temporal::Beats end_delta)
3226 {
3227         bool change_start = false;
3228         bool change_length = false;
3229         Temporal::Beats new_start;
3230         Temporal::Beats new_length;
3231
3232         /* NOTE: the semantics of the two delta arguments are slightly subtle:
3233
3234            front_delta: if positive - move the start of the note later in time (shortening it)
3235            if negative - move the start of the note earlier in time (lengthening it)
3236
3237            end_delta:   if positive - move the end of the note later in time (lengthening it)
3238            if negative - move the end of the note earlier in time (shortening it)
3239         */
3240
3241         if (!!front_delta) {
3242                 if (front_delta < 0) {
3243
3244                         if (event->note()->time() < -front_delta) {
3245                                 new_start = Temporal::Beats();
3246                         } else {
3247                                 new_start = event->note()->time() + front_delta; // moves earlier
3248                         }
3249
3250                         /* start moved toward zero, so move the end point out to where it used to be.
3251                            Note that front_delta is negative, so this increases the length.
3252                         */
3253
3254                         new_length = event->note()->length() - front_delta;
3255                         change_start = true;
3256                         change_length = true;
3257
3258                 } else {
3259
3260                         Temporal::Beats new_pos = event->note()->time() + front_delta;
3261
3262                         if (new_pos < event->note()->end_time()) {
3263                                 new_start = event->note()->time() + front_delta;
3264                                 /* start moved toward the end, so move the end point back to where it used to be */
3265                                 new_length = event->note()->length() - front_delta;
3266                                 change_start = true;
3267                                 change_length = true;
3268                         }
3269                 }
3270
3271         }
3272
3273         if (!!end_delta) {
3274                 bool can_change = true;
3275                 if (end_delta < 0) {
3276                         if (event->note()->length() < -end_delta) {
3277                                 can_change = false;
3278                         }
3279                 }
3280
3281                 if (can_change) {
3282                         new_length = event->note()->length() + end_delta;
3283                         change_length = true;
3284                 }
3285         }
3286
3287         if (change_start) {
3288                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
3289         }
3290
3291         if (change_length) {
3292                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
3293         }
3294 }
3295
3296 void
3297 MidiRegionView::change_note_channel (NoteBase* event, int8_t chn, bool relative)
3298 {
3299         uint8_t new_channel;
3300
3301         if (relative) {
3302                 if (chn < 0.0) {
3303                         if (event->note()->channel() < -chn) {
3304                                 new_channel = 0;
3305                         } else {
3306                                 new_channel = event->note()->channel() + chn;
3307                         }
3308                 } else {
3309                         new_channel = event->note()->channel() + chn;
3310                 }
3311         } else {
3312                 new_channel = (uint8_t) chn;
3313         }
3314
3315         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, new_channel);
3316 }
3317
3318 void
3319 MidiRegionView::change_note_time (NoteBase* event, Temporal::Beats delta, bool relative)
3320 {
3321         Temporal::Beats new_time;
3322
3323         if (relative) {
3324                 if (delta < 0.0) {
3325                         if (event->note()->time() < -delta) {
3326                                 new_time = Temporal::Beats();
3327                         } else {
3328                                 new_time = event->note()->time() + delta;
3329                         }
3330                 } else {
3331                         new_time = event->note()->time() + delta;
3332                 }
3333         } else {
3334                 new_time = delta;
3335         }
3336
3337         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
3338 }
3339
3340 void
3341 MidiRegionView::change_note_length (NoteBase* event, Temporal::Beats t)
3342 {
3343         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
3344 }
3345
3346 void
3347 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush, bool all_together)
3348 {
3349         int8_t delta;
3350         int8_t value = 0;
3351
3352         if (_selection.empty()) {
3353                 return;
3354         }
3355
3356         if (fine) {
3357                 delta = 1;
3358         } else {
3359                 delta = 10;
3360         }
3361
3362         if (!up) {
3363                 delta = -delta;
3364         }
3365
3366         if (!allow_smush) {
3367                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3368                         if ((*i)->note()->velocity() < -delta || (*i)->note()->velocity() + delta > 127) {
3369                                 goto cursor_label;
3370                         }
3371                 }
3372         }
3373
3374         start_note_diff_command (_("change velocities"));
3375
3376         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
3377                 Selection::iterator next = i;
3378                 ++next;
3379
3380                 if (all_together) {
3381                         if (i == _selection.begin()) {
3382                                 change_note_velocity (*i, delta, true);
3383                                 value = (*i)->note()->velocity() + delta;
3384                         } else {
3385                                 change_note_velocity (*i, value, false);
3386                         }
3387
3388                 } else {
3389                         change_note_velocity (*i, delta, true);
3390                 }
3391
3392                 i = next;
3393         }
3394
3395         apply_diff();
3396
3397   cursor_label:
3398         if (!_selection.empty()) {
3399                 char buf[24];
3400                 snprintf (buf, sizeof (buf), "Vel %d",
3401                           (int) (*_selection.begin())->note()->velocity());
3402                 show_verbose_cursor (buf, 10, 10);
3403         }
3404 }
3405
3406
3407 void
3408 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
3409 {
3410         if (_selection.empty()) {
3411                 return;
3412         }
3413
3414         int8_t delta;
3415
3416         if (fine) {
3417                 delta = 1;
3418         } else {
3419                 delta = 12;
3420         }
3421
3422         if (!up) {
3423                 delta = -delta;
3424         }
3425
3426         if (!allow_smush) {
3427                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3428                         if (!up) {
3429                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
3430                                         return;
3431                                 }
3432                         } else {
3433                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
3434                                         return;
3435                                 }
3436                         }
3437                 }
3438         }
3439
3440         start_note_diff_command (_("transpose"));
3441
3442         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3443                 Selection::iterator next = i;
3444                 ++next;
3445                 change_note_note (*i, delta, true);
3446                 i = next;
3447         }
3448
3449         apply_diff ();
3450 }
3451
3452 void
3453 MidiRegionView::change_note_lengths (bool fine, bool shorter, Temporal::Beats delta, bool start, bool end)
3454 {
3455         if (!delta) {
3456                 if (fine) {
3457                         delta = Temporal::Beats(1.0/128.0);
3458                 } else {
3459                         /* grab the current grid distance */
3460                         delta = get_grid_beats(_region->position());
3461                 }
3462         }
3463
3464         if (shorter) {
3465                 delta = -delta;
3466         }
3467
3468         start_note_diff_command (_("change note lengths"));
3469
3470         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3471                 Selection::iterator next = i;
3472                 ++next;
3473
3474                 /* note the negation of the delta for start */
3475
3476                 trim_note (*i,
3477                            (start ? -delta : Temporal::Beats()),
3478                            (end   ? delta  : Temporal::Beats()));
3479                 i = next;
3480         }
3481
3482         apply_diff ();
3483
3484 }
3485
3486 void
3487 MidiRegionView::nudge_notes (bool forward, bool fine)
3488 {
3489         if (_selection.empty()) {
3490                 return;
3491         }
3492
3493         /* pick a note as the point along the timeline to get the nudge distance.
3494            its not necessarily the earliest note, so we may want to pull the notes out
3495            into a vector and sort before using the first one.
3496         */
3497
3498         const samplepos_t ref_point = source_beats_to_absolute_samples ((*(_selection.begin()))->note()->time());
3499         Temporal::Beats  delta;
3500
3501         if (!fine) {
3502
3503                 /* non-fine, move by 1 bar regardless of snap */
3504                 delta = Temporal::Beats(trackview.session()->tempo_map().meter_at_sample (ref_point).divisions_per_bar());
3505
3506         } else if (trackview.editor().snap_mode() == Editing::SnapOff) {
3507
3508                 /* grid is off - use nudge distance */
3509
3510                 samplepos_t       unused;
3511                 const samplecnt_t distance = trackview.editor().get_nudge_distance (ref_point, unused);
3512                 delta = region_samples_to_region_beats (fabs ((double)distance));
3513
3514         } else {
3515
3516                 /* use grid */
3517
3518                 MusicSample next_pos (ref_point, 0);
3519                 if (forward) {
3520                         if (max_samplepos - 1 < next_pos.sample) {
3521                                 next_pos.sample += 1;
3522                         }
3523                 } else {
3524                         if (next_pos.sample == 0) {
3525                                 return;
3526                         }
3527                         next_pos.sample -= 1;
3528                 }
3529
3530                 trackview.editor().snap_to (next_pos, (forward ? RoundUpAlways : RoundDownAlways), SnapToGrid_Unscaled, false);
3531                 const samplecnt_t distance = ref_point - next_pos.sample;
3532                 delta = region_samples_to_region_beats (fabs ((double)distance));
3533         }
3534
3535         if (!delta) {
3536                 return;
3537         }
3538
3539         if (!forward) {
3540                 delta = -delta;
3541         }
3542
3543         start_note_diff_command (_("nudge"));
3544
3545         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
3546                 Selection::iterator next = i;
3547                 ++next;
3548                 change_note_time (*i, delta, true);
3549                 i = next;
3550         }
3551
3552         apply_diff ();
3553 }
3554
3555 void
3556 MidiRegionView::change_channel(uint8_t channel)
3557 {
3558         start_note_diff_command(_("change channel"));
3559         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3560                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
3561         }
3562
3563         apply_diff();
3564 }
3565
3566
3567 void
3568 MidiRegionView::note_entered(NoteBase* ev)
3569 {
3570         _entered_note = ev;
3571
3572         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3573
3574         if (_mouse_state == SelectTouchDragging) {
3575
3576                 note_selected (ev, true);
3577
3578         } else if (editor->current_mouse_mode() == MouseContent) {
3579
3580                 remove_ghost_note ();
3581                 show_verbose_cursor (ev->note ());
3582
3583         } else if (editor->current_mouse_mode() == MouseDraw) {
3584
3585                 remove_ghost_note ();
3586                 show_verbose_cursor (ev->note ());
3587         }
3588 }
3589
3590 void
3591 MidiRegionView::note_left (NoteBase*)
3592 {
3593         _entered_note = 0;
3594
3595         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3596                 (*i)->hide_velocity ();
3597         }
3598
3599         hide_verbose_cursor ();
3600 }
3601
3602 void
3603 MidiRegionView::patch_entered (PatchChange* p)
3604 {
3605         ostringstream s;
3606         s << _("Bank ") << (p->patch()->bank() + MIDI_BP_ZERO) << '\n'
3607           << instrument_info().get_patch_name_without (p->patch()->bank(), p->patch()->program(), p->patch()->channel()) << '\n'
3608           << _("Channel ") << ((int) p->patch()->channel() + 1);
3609         show_verbose_cursor (s.str(), 10, 20);
3610         p->item().grab_focus();
3611 }
3612
3613 void
3614 MidiRegionView::patch_left (PatchChange *)
3615 {
3616         hide_verbose_cursor ();
3617         /* focus will transfer back via the enter-notify event sent to this
3618          * midi region view.
3619          */
3620 }
3621
3622 void
3623 MidiRegionView::sysex_entered (SysEx* p)
3624 {
3625         // ostringstream s;
3626         // CAIROCANVAS
3627         // need a way to extract text from p->_flag->_text
3628         // s << p->text();
3629         // show_verbose_cursor (s.str(), 10, 20);
3630         p->item().grab_focus();
3631 }
3632
3633 void
3634 MidiRegionView::sysex_left (SysEx *)
3635 {
3636         hide_verbose_cursor ();
3637         /* focus will transfer back via the enter-notify event sent to this
3638          * midi region view.
3639          */
3640 }
3641
3642 void
3643 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
3644 {
3645         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
3646         Editing::MouseMode mm = editor->current_mouse_mode();
3647         bool trimmable = (mm == MouseContent || mm == MouseTimeFX || mm == MouseDraw);
3648
3649         Editor::EnterContext* ctx = editor->get_enter_context(NoteItem);
3650         if (can_set_cursor && ctx) {
3651                 if (trimmable && x_fraction > 0.0 && x_fraction < 0.2) {
3652                         ctx->cursor_ctx->change(editor->cursors()->left_side_trim);
3653                 } else if (trimmable && x_fraction >= 0.8 && x_fraction < 1.0) {
3654                         ctx->cursor_ctx->change(editor->cursors()->right_side_trim);
3655                 } else {
3656                         ctx->cursor_ctx->change(editor->cursors()->grabber_note);
3657                 }
3658         }
3659 }
3660
3661 uint32_t
3662 MidiRegionView::get_fill_color() const
3663 {
3664         const std::string mod_name = (_dragging ? "dragging region" :
3665                                       trackview.editor().internal_editing() ? "editable region" :
3666                                       "midi frame base");
3667         if (_selected) {
3668                 return UIConfiguration::instance().color_mod ("selected region base", mod_name);
3669         } else if ((!UIConfiguration::instance().get_show_name_highlight() || high_enough_for_name) &&
3670                    !UIConfiguration::instance().get_color_regions_using_track_color()) {
3671                 return UIConfiguration::instance().color_mod ("midi frame base", mod_name);
3672         }
3673         return UIConfiguration::instance().color_mod (fill_color, mod_name);
3674 }
3675
3676 void
3677 MidiRegionView::midi_channel_mode_changed ()
3678 {
3679         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3680         uint16_t mask = mtv->midi_track()->get_playback_channel_mask();
3681         ChannelMode mode = mtv->midi_track()->get_playback_channel_mode ();
3682
3683         if (mode == ForceChannel) {
3684                 mask = 0xFFFF; // Show all notes as active (below)
3685         }
3686
3687         // Update notes for selection
3688         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3689                 i->second->on_channel_selection_change (mask);
3690         }
3691
3692         _patch_changes.clear ();
3693         display_patch_changes ();
3694 }
3695
3696 void
3697 MidiRegionView::instrument_settings_changed ()
3698 {
3699         redisplay_model();
3700 }
3701
3702 void
3703 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
3704 {
3705         if (_selection.empty()) {
3706                 return;
3707         }
3708
3709         PublicEditor& editor (trackview.editor());
3710
3711         switch (op) {
3712         case Delete:
3713                 /* XXX what to do ? */
3714                 break;
3715         case Cut:
3716         case Copy:
3717                 editor.get_cut_buffer().add (selection_as_cut_buffer());
3718                 break;
3719         default:
3720                 break;
3721         }
3722
3723         if (op != Copy) {
3724
3725                 start_note_diff_command();
3726
3727                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3728                         switch (op) {
3729                         case Copy:
3730                                 break;
3731                         case Delete:
3732                         case Cut:
3733                         case Clear:
3734                                 note_diff_remove_note (*i);
3735                                 break;
3736                         }
3737                 }
3738
3739                 apply_diff();
3740         }
3741 }
3742
3743 MidiCutBuffer*
3744 MidiRegionView::selection_as_cut_buffer () const
3745 {
3746         Notes notes;
3747
3748         for (Selection::const_iterator i = _selection.begin(); i != _selection.end(); ++i) {
3749                 NoteType* n = (*i)->note().get();
3750                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
3751         }
3752
3753         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
3754         cb->set (notes);
3755
3756         return cb;
3757 }
3758
3759 /** This method handles undo */
3760 bool
3761 MidiRegionView::paste (samplepos_t pos, const ::Selection& selection, PasteContext& ctx, const int32_t sub_num)
3762 {
3763         bool commit = false;
3764         // Paste notes, if available
3765         MidiNoteSelection::const_iterator m = selection.midi_notes.get_nth(ctx.counts.n_notes());
3766         if (m != selection.midi_notes.end()) {
3767                 ctx.counts.increase_n_notes();
3768                 if (!(*m)->empty()) {
3769                         commit = true;
3770                 }
3771                 paste_internal(pos, ctx.count, ctx.times, **m);
3772         }
3773
3774         // Paste control points to automation children, if available
3775         typedef RouteTimeAxisView::AutomationTracks ATracks;
3776         const ATracks& atracks = midi_view()->automation_tracks();
3777         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
3778                 if (a->second->paste(pos, selection, ctx, sub_num)) {
3779                         if(!commit) {
3780                                 trackview.editor().begin_reversible_command (Operations::paste);
3781                         }
3782                         commit = true;
3783                 }
3784         }
3785
3786         if (commit) {
3787                 trackview.editor().commit_reversible_command ();
3788         }
3789         return true;
3790 }
3791
3792 /** This method handles undo */
3793 void
3794 MidiRegionView::paste_internal (samplepos_t pos, unsigned paste_count, float times, const MidiCutBuffer& mcb)
3795 {
3796         if (mcb.empty()) {
3797                 return;
3798         }
3799
3800         start_note_diff_command (_("paste"));
3801
3802         const Temporal::Beats snap_beats    = get_grid_beats(pos);
3803         const Temporal::Beats first_time    = (*mcb.notes().begin())->time();
3804         const Temporal::Beats last_time     = (*mcb.notes().rbegin())->end_time();
3805         const Temporal::Beats duration      = last_time - first_time;
3806         const Temporal::Beats snap_duration = duration.snap_to(snap_beats);
3807         const Temporal::Beats paste_offset  = snap_duration * paste_count;
3808         const Temporal::Beats quarter_note  = absolute_samples_to_source_beats(pos) + paste_offset;
3809         Temporal::Beats       end_point     = Temporal::Beats();
3810
3811         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste data spans from %1 to %2 (%3) ; paste pos beats = %4 (based on %5 - %6)\n",
3812                                                        first_time,
3813                                                        last_time,
3814                                                        duration, pos, _region->position(),
3815                                                        quarter_note));
3816
3817         clear_editor_note_selection ();
3818
3819         for (int n = 0; n < (int) times; ++n) {
3820
3821                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3822
3823                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3824                         copied_note->set_time (quarter_note + copied_note->time() - first_time);
3825                         copied_note->set_id (Evoral::next_event_id());
3826
3827                         /* make all newly added notes selected */
3828
3829                         note_diff_add_note (copied_note, true);
3830                         end_point = copied_note->end_time();
3831                 }
3832         }
3833
3834         /* if we pasted past the current end of the region, extend the region */
3835
3836         samplepos_t end_sample = source_beats_to_absolute_samples (end_point);
3837         samplepos_t region_end = _region->position() + _region->length() - 1;
3838
3839         if (end_sample > region_end) {
3840
3841                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_sample));
3842
3843                 _region->clear_changes ();
3844                 /* we probably need to get the snap modifier somehow to make this correct for non-musical use */
3845                 _region->set_length (end_sample - _region->position(), trackview.editor().get_grid_music_divisions (0));
3846                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3847         }
3848
3849         apply_diff (true);
3850 }
3851
3852 struct EventNoteTimeEarlyFirstComparator {
3853         bool operator() (NoteBase* a, NoteBase* b) {
3854                 return a->note()->time() < b->note()->time();
3855         }
3856 };
3857
3858 void
3859 MidiRegionView::goto_next_note (bool add_to_selection)
3860 {
3861         bool use_next = false;
3862
3863         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3864         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask();
3865         NoteBase* first_note = 0;
3866
3867         MidiModel::ReadLock lock(_model->read_lock());
3868         MidiModel::Notes& notes (_model->notes());
3869
3870         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
3871                 NoteBase* cne = 0;
3872                 if ((cne = find_canvas_note (*n))) {
3873
3874                         if (!first_note && (channel_mask & (1 << (*n)->channel()))) {
3875                                 first_note = cne;
3876                         }
3877
3878                         if (cne->selected()) {
3879                                 use_next = true;
3880                                 continue;
3881                         } else if (use_next) {
3882                                 if (channel_mask & (1 << (*n)->channel())) {
3883                                         if (!add_to_selection) {
3884                                                 unique_select (cne);
3885                                         } else {
3886                                                 note_selected (cne, true, false);
3887                                         }
3888
3889                                         return;
3890                                 }
3891                         }
3892                 }
3893         }
3894
3895         /* use the first one */
3896
3897         if (!_events.empty() && first_note) {
3898                 unique_select (first_note);
3899         }
3900 }
3901
3902 void
3903 MidiRegionView::goto_previous_note (bool add_to_selection)
3904 {
3905         bool use_next = false;
3906
3907         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3908         uint16_t const channel_mask = mtv->midi_track()->get_playback_channel_mask ();
3909         NoteBase* last_note = 0;
3910
3911         MidiModel::ReadLock lock(_model->read_lock());
3912         MidiModel::Notes& notes (_model->notes());
3913
3914         for (MidiModel::Notes::reverse_iterator n = notes.rbegin(); n != notes.rend(); ++n) {
3915                 NoteBase* cne = 0;
3916                 if ((cne = find_canvas_note (*n))) {
3917
3918                         if (!last_note && (channel_mask & (1 << (*n)->channel()))) {
3919                                 last_note = cne;
3920                         }
3921
3922                         if (cne->selected()) {
3923                                 use_next = true;
3924                                 continue;
3925
3926                         } else if (use_next) {
3927                                 if (channel_mask & (1 << (*n)->channel())) {
3928                                         if (!add_to_selection) {
3929                                                 unique_select (cne);
3930                                         } else {
3931                                                 note_selected (cne, true, false);
3932                                         }
3933
3934                                         return;
3935                                 }
3936                         }
3937                 }
3938         }
3939
3940         /* use the last one */
3941
3942         if (!_events.empty() && last_note) {
3943                 unique_select (last_note);
3944         }
3945 }
3946
3947 void
3948 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3949 {
3950         bool had_selected = false;
3951
3952         /* we previously time sorted events here, but Notes is a multiset sorted by time */
3953
3954         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3955                 if (i->second->selected()) {
3956                         selected.insert (i->first);
3957                         had_selected = true;
3958                 }
3959         }
3960
3961         if (allow_all_if_none_selected && !had_selected) {
3962                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3963                         selected.insert (i->first);
3964                 }
3965         }
3966 }
3967
3968 void
3969 MidiRegionView::update_ghost_note (double x, double y, uint32_t state)
3970 {
3971         x = std::max(0.0, x);
3972
3973         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3974
3975         _last_ghost_x = x;
3976         _last_ghost_y = y;
3977
3978         _note_group->canvas_to_item (x, y);
3979
3980         PublicEditor& editor = trackview.editor ();
3981
3982         samplepos_t const unsnapped_sample = editor.pixel_to_sample (x);
3983
3984         const int32_t divisions = editor.get_grid_music_divisions (state);
3985         const bool shift_snap = midi_view()->note_mode() != Percussive;
3986         const Temporal::Beats snapped_beats = snap_sample_to_grid_underneath (unsnapped_sample, divisions, shift_snap);
3987
3988         /* prevent Percussive mode from displaying a ghost hit at region end */
3989         if (!shift_snap && snapped_beats >= midi_region()->start_beats() + midi_region()->length_beats()) {
3990                 _ghost_note->hide();
3991                 hide_verbose_cursor ();
3992                 return;
3993         }
3994
3995         /* ghost note may have been snapped before region */
3996         if (_ghost_note && snapped_beats.to_double() < 0.0) {
3997                 _ghost_note->hide();
3998                 return;
3999
4000         } else if (_ghost_note) {
4001                 _ghost_note->show();
4002         }
4003
4004         /* calculate time in beats relative to start of source */
4005         const Temporal::Beats length = get_grid_beats(unsnapped_sample + _region->position());
4006
4007         _ghost_note->note()->set_time (snapped_beats);
4008         _ghost_note->note()->set_length (length);
4009         _ghost_note->note()->set_note (y_to_note (y));
4010         _ghost_note->note()->set_channel (mtv->get_channel_for_add ());
4011         _ghost_note->note()->set_velocity (get_velocity_for_add (snapped_beats));
4012         /* the ghost note does not appear in ghost regions, so pass false in here */
4013         update_note (_ghost_note, false);
4014
4015         show_verbose_cursor (_ghost_note->note ());
4016 }
4017
4018 void
4019 MidiRegionView::create_ghost_note (double x, double y, uint32_t state)
4020 {
4021         remove_ghost_note ();
4022
4023         boost::shared_ptr<NoteType> g (new NoteType);
4024         if (midi_view()->note_mode() == Sustained) {
4025                 _ghost_note = new Note (*this, _note_group, g);
4026         } else {
4027                 _ghost_note = new Hit (*this, _note_group, 10, g);
4028         }
4029         _ghost_note->set_ignore_events (true);
4030         _ghost_note->set_outline_color (0x000000aa);
4031         update_ghost_note (x, y, state);
4032         _ghost_note->show ();
4033
4034         show_verbose_cursor (_ghost_note->note ());
4035 }
4036
4037 void
4038 MidiRegionView::remove_ghost_note ()
4039 {
4040         delete _ghost_note;
4041         _ghost_note = 0;
4042 }
4043
4044 void
4045 MidiRegionView::hide_verbose_cursor ()
4046 {
4047         trackview.editor().verbose_cursor()->hide ();
4048         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4049         if (mtv) {
4050                 mtv->set_note_highlight (NO_MIDI_NOTE);
4051         }
4052 }
4053
4054 void
4055 MidiRegionView::snap_changed ()
4056 {
4057         if (!_ghost_note) {
4058                 return;
4059         }
4060
4061         create_ghost_note (_last_ghost_x, _last_ghost_y, 0);
4062 }
4063
4064 void
4065 MidiRegionView::drop_down_keys ()
4066 {
4067         _mouse_state = None;
4068 }
4069
4070 void
4071 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
4072 {
4073         /* XXX: This is dead code.  What was it for? */
4074
4075         double note = y_to_note(y);
4076         Events e;
4077         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4078
4079         uint16_t chn_mask = mtv->midi_track()->get_playback_channel_mask();
4080
4081         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
4082                 get_events (e, Evoral::Sequence<Temporal::Beats>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
4083         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
4084                 get_events (e, Evoral::Sequence<Temporal::Beats>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
4085         } else {
4086                 return;
4087         }
4088
4089         bool add_mrv_selection = false;
4090
4091         if (_selection.empty()) {
4092                 add_mrv_selection = true;
4093         }
4094
4095         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
4096                 if (_selection.insert (i->second).second) {
4097                         i->second->set_selected (true);
4098                 }
4099         }
4100
4101         if (add_mrv_selection) {
4102                 PublicEditor& editor (trackview.editor());
4103                 editor.get_selection().add (this);
4104         }
4105 }
4106
4107 void
4108 MidiRegionView::color_handler ()
4109 {
4110         RegionView::color_handler ();
4111
4112         _patch_change_outline = UIConfiguration::instance().color ("midi patch change outline");
4113         _patch_change_fill = UIConfiguration::instance().color_mod ("midi patch change fill", "midi patch change fill");
4114
4115         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
4116                 i->second->set_selected (i->second->selected()); // will change color
4117         }
4118
4119         /* XXX probably more to do here */
4120 }
4121
4122 void
4123 MidiRegionView::enable_display (bool yn)
4124 {
4125         RegionView::enable_display (yn);
4126 }
4127
4128 void
4129 MidiRegionView::show_step_edit_cursor (Temporal::Beats pos)
4130 {
4131         if (_step_edit_cursor == 0) {
4132                 ArdourCanvas::Item* const group = get_canvas_group();
4133
4134                 _step_edit_cursor = new ArdourCanvas::Rectangle (group);
4135                 _step_edit_cursor->set_y0 (0);
4136                 _step_edit_cursor->set_y1 (midi_stream_view()->contents_height());
4137                 _step_edit_cursor->set_fill_color (RGBA_TO_UINT (45,0,0,90));
4138                 _step_edit_cursor->set_outline_color (RGBA_TO_UINT (85,0,0,90));
4139         }
4140
4141         move_step_edit_cursor (pos);
4142         _step_edit_cursor->show ();
4143 }
4144
4145 void
4146 MidiRegionView::move_step_edit_cursor (Temporal::Beats pos)
4147 {
4148         _step_edit_cursor_position = pos;
4149
4150         if (_step_edit_cursor) {
4151                 double pixel = trackview.editor().sample_to_pixel (region_beats_to_region_samples (pos));
4152                 _step_edit_cursor->set_x0 (pixel);
4153                 set_step_edit_cursor_width (_step_edit_cursor_width);
4154         }
4155 }
4156
4157 void
4158 MidiRegionView::hide_step_edit_cursor ()
4159 {
4160         if (_step_edit_cursor) {
4161                 _step_edit_cursor->hide ();
4162         }
4163 }
4164
4165 void
4166 MidiRegionView::set_step_edit_cursor_width (Temporal::Beats beats)
4167 {
4168         _step_edit_cursor_width = beats;
4169
4170         if (_step_edit_cursor) {
4171                 _step_edit_cursor->set_x1 (_step_edit_cursor->x0()
4172                                            + trackview.editor().sample_to_pixel (
4173                                              region_beats_to_region_samples (_step_edit_cursor_position + beats)
4174                                              - region_beats_to_region_samples (_step_edit_cursor_position)));
4175         }
4176 }
4177
4178 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
4179  *  @param w Source that the data will end up in.
4180  */
4181 void
4182 MidiRegionView::data_recorded (boost::weak_ptr<MidiSource> w)
4183 {
4184         if (!_active_notes) {
4185                 /* we aren't actively being recorded to */
4186                 return;
4187         }
4188
4189         boost::shared_ptr<MidiSource> src = w.lock ();
4190         if (!src || src != midi_region()->midi_source()) {
4191                 /* recorded data was not destined for our source */
4192                 return;
4193         }
4194
4195         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
4196
4197         boost::shared_ptr<MidiBuffer> buf = mtv->midi_track()->get_gui_feed_buffer ();
4198
4199         samplepos_t back = max_samplepos;
4200
4201         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
4202                 const Evoral::Event<MidiBuffer::TimeType>& ev = *i;
4203
4204                 if (ev.is_channel_event()) {
4205                         if (get_channel_mode() == FilterChannels) {
4206                                 if (((uint16_t(1) << ev.channel()) & get_selected_channels()) == 0) {
4207                                         continue;
4208                                 }
4209                         }
4210                 }
4211
4212                 /* convert from session samples to source beats */
4213                 Temporal::Beats const time_beats = _source_relative_time_converter.from(
4214                         ev.time() - src->natural_position() + _region->start());
4215
4216                 if (ev.type() == MIDI_CMD_NOTE_ON) {
4217                         boost::shared_ptr<NoteType> note (
4218                                 new NoteType (ev.channel(), time_beats, Temporal::Beats(), ev.note(), ev.velocity()));
4219
4220                         add_note (note, true);
4221
4222                         /* fix up our note range */
4223                         if (ev.note() < _current_range_min) {
4224                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
4225                         } else if (ev.note() > _current_range_max) {
4226                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
4227                         }
4228
4229                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
4230                         resolve_note (ev.note (), time_beats);
4231                 }
4232
4233                 back = ev.time ();
4234         }
4235
4236         midi_stream_view()->check_record_layers (region(), back);
4237 }
4238
4239 void
4240 MidiRegionView::trim_front_starting ()
4241 {
4242         /* We used to eparent the note group to the region view's parent, so that it didn't change.
4243            now we update it.
4244         */
4245 }
4246
4247 void
4248 MidiRegionView::trim_front_ending ()
4249 {
4250         if (_region->start() < 0) {
4251                 /* Trim drag made start time -ve; fix this */
4252                 midi_region()->fix_negative_start ();
4253         }
4254 }
4255
4256 void
4257 MidiRegionView::edit_patch_change (PatchChange* pc)
4258 {
4259         PatchChangeDialog d (&_source_relative_time_converter, trackview.session(), *pc->patch (), instrument_info(), Gtk::Stock::APPLY, true);
4260
4261         int response = d.run();
4262
4263         switch (response) {
4264         case Gtk::RESPONSE_ACCEPT:
4265                 break;
4266         case Gtk::RESPONSE_REJECT:
4267                 delete_patch_change (pc);
4268                 return;
4269         default:
4270                 return;
4271         }
4272
4273         change_patch_change (pc->patch(), d.patch ());
4274 }
4275
4276 void
4277 MidiRegionView::delete_sysex (SysEx* /*sysex*/)
4278 {
4279         // CAIROCANVAS
4280         // sysyex object doesn't have a pointer to a sysex event
4281         // MidiModel::SysExDiffCommand* c = _model->new_sysex_diff_command (_("delete sysex"));
4282         // c->remove (sysex->sysex());
4283         // _model->apply_command (*trackview.session(), c);
4284
4285         //_sys_exes.clear ();
4286         // display_sysexes();
4287 }
4288
4289 std::string
4290 MidiRegionView::get_note_name (boost::shared_ptr<NoteType> n, uint8_t note_value) const
4291 {
4292         using namespace MIDI::Name;
4293         std::string name;
4294
4295         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4296         if (mtv) {
4297                 boost::shared_ptr<MasterDeviceNames> device_names(mtv->get_device_names());
4298                 if (device_names) {
4299                         MIDI::Name::PatchPrimaryKey patch_key;
4300                         get_patch_key_at(n->time(), n->channel(), patch_key);
4301                         name = device_names->note_name(mtv->gui_property(X_("midnam-custom-device-mode")),
4302                                                        n->channel(),
4303                                                        patch_key.bank(),
4304                                                        patch_key.program(),
4305                                                        note_value);
4306                 }
4307         }
4308
4309         char buf[128];
4310         snprintf (buf, sizeof (buf), "%d %s\nCh %d Vel %d",
4311                   (int) note_value,
4312                   name.empty() ? ParameterDescriptor::midi_note_name (note_value).c_str() : name.c_str(),
4313                   (int) n->channel() + 1,
4314                   (int) n->velocity());
4315
4316         return buf;
4317 }
4318
4319 void
4320 MidiRegionView::show_verbose_cursor_for_new_note_value(boost::shared_ptr<NoteType> current_note,
4321                                                        uint8_t new_value) const
4322 {
4323         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
4324         if (mtv) {
4325                 mtv->set_note_highlight (new_value);
4326         }
4327
4328         show_verbose_cursor(get_note_name(current_note, new_value), 10, 20);
4329 }
4330
4331 void
4332 MidiRegionView::show_verbose_cursor (boost::shared_ptr<NoteType> n) const
4333 {
4334         show_verbose_cursor_for_new_note_value(n, n->note());
4335 }
4336
4337 void
4338 MidiRegionView::show_verbose_cursor (string const & text, double xoffset, double yoffset) const
4339 {
4340         trackview.editor().verbose_cursor()->set (text);
4341         trackview.editor().verbose_cursor()->show ();
4342         trackview.editor().verbose_cursor()->set_offset (ArdourCanvas::Duple (xoffset, yoffset));
4343 }
4344
4345 uint8_t
4346 MidiRegionView::get_velocity_for_add (MidiModel::TimeType time) const
4347 {
4348         if (_model->notes().empty()) {
4349                 return 0x40;  // No notes, use default
4350         }
4351
4352         MidiModel::Notes::const_iterator m = _model->note_lower_bound(time);
4353         if (m == _model->notes().begin()) {
4354                 // Before the start, use the velocity of the first note
4355                 return (*m)->velocity();
4356         } else if (m == _model->notes().end()) {
4357                 // Past the end, use the velocity of the last note
4358                 --m;
4359                 return (*m)->velocity();
4360         }
4361
4362         // Interpolate velocity of surrounding notes
4363         MidiModel::Notes::const_iterator n = m;
4364         --n;
4365
4366         const double frac = ((time - (*n)->time()).to_double() /
4367                              ((*m)->time() - (*n)->time()).to_double());
4368
4369         return (*n)->velocity() + (frac * ((*m)->velocity() - (*n)->velocity()));
4370 }
4371
4372 /** @param p A session samplepos.
4373  *  @param divisions beat division to snap given by Editor::get_grid_music_divisions() where
4374  *  bar is -1, 0 is audio samples and a positive integer is beat subdivisions.
4375  *  @return beat duration of p snapped to the grid subdivision underneath it.
4376  */
4377 Temporal::Beats
4378 MidiRegionView::snap_sample_to_grid_underneath (samplepos_t p, int32_t divisions, bool shift_snap) const
4379 {
4380         TempoMap& map (trackview.session()->tempo_map());
4381         double eqaf = map.exact_qn_at_sample (p + _region->position(), divisions);
4382
4383         if (divisions != 0 && shift_snap) {
4384                 const double qaf = map.quarter_note_at_sample (p + _region->position());
4385                 /* Hack so that we always snap to the note that we are over, instead of snapping
4386                    to the next one if we're more than halfway through the one we're over.
4387                 */
4388                 const Temporal::Beats grid_beats = get_grid_beats (p + _region->position());
4389                 const double rem = eqaf - qaf;
4390                 if (rem >= 0.0) {
4391                         eqaf -= grid_beats.to_double();
4392                 }
4393         }
4394         const double session_start_off = _region->quarter_note() - midi_region()->start_beats();
4395
4396         return Temporal::Beats (eqaf - session_start_off);
4397 }
4398
4399 ChannelMode
4400 MidiRegionView::get_channel_mode () const
4401 {
4402         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
4403         return rtav->midi_track()->get_playback_channel_mode();
4404 }
4405
4406 uint16_t
4407 MidiRegionView::get_selected_channels () const
4408 {
4409         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (&trackview);
4410         return rtav->midi_track()->get_playback_channel_mask();
4411 }
4412
4413
4414 Temporal::Beats
4415 MidiRegionView::get_grid_beats(samplepos_t pos) const
4416 {
4417         PublicEditor& editor  = trackview.editor();
4418         bool          success = false;
4419         Temporal::Beats beats   = editor.get_grid_type_as_beats (success, pos);
4420         if (!success) {
4421                 beats = Temporal::Beats(1);
4422         }
4423         return beats;
4424 }
4425 uint8_t
4426 MidiRegionView::y_to_note (double y) const
4427 {
4428         int const n = ((contents_height() - y) / contents_height() * (double)(_current_range_max - _current_range_min + 1))
4429                 + _current_range_min;
4430
4431         if (n < 0) {
4432                 return 0;
4433         } else if (n > 127) {
4434                 return 127;
4435         }
4436
4437         /* min due to rounding and/or off-by-one errors */
4438         return min ((uint8_t) n, _current_range_max);
4439 }
4440
4441 double
4442 MidiRegionView::note_to_y(uint8_t note) const
4443 {
4444         return contents_height() - (note + 1 - _current_range_min) * note_height() + 1;
4445 }
4446
4447 double
4448 MidiRegionView::session_relative_qn (double qn) const
4449 {
4450         return qn + (region()->quarter_note() - midi_region()->start_beats());
4451 }