gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_model.h>
  36
  37 #include "streamview.h"
  38 #include "midi_region_view.h"
  39 #include "midi_streamview.h"
  40 #include "midi_time_axis.h"
  41 #include "simpleline.h"
  42 #include "canvas-hit.h"
  43 #include "canvas-note.h"
  44 #include "canvas-program-change.h"
  45 #include "public_editor.h"
  46 #include "ghostregion.h"
  47 #include "midi_time_axis.h"
  48 #include "automation_time_axis.h"
  49 #include "automation_region_view.h"
  50 #include "utils.h"
  51 #include "midi_util.h"
  52 #include "gui_thread.h"
  53 #include "keyboard.h"
  54
  55 #include "i18n.h"
  56
  57 using namespace sigc;
  58 using namespace ARDOUR;
  59 using namespace PBD;
  60 using namespace Editing;
  61 using namespace ArdourCanvas;
  62
  63 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  64         : RegionView (parent, tv, r, spu, basic_color)
  65         , _force_channel(-1)
  66         , _last_channel_selection(0xFFFF)
  67         , _default_note_length(0.0)
  68         , _current_range_min(0)
  69         , _current_range_max(0)
  70         , _active_notes(0)
  71         , _note_group(new ArdourCanvas::Group(*parent))
  72         , _delta_command(NULL)
  73         , _mouse_state(None)
  74         , _pressed_button(0)
  75 {
  76         _note_group->raise_to_top();
  77 }
  78
  79 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  80         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  81         , _force_channel(-1)
  82         , _last_channel_selection(0xFFFF)
  83         , _default_note_length(0.0)
  84         , _active_notes(0)
  85         , _note_group(new ArdourCanvas::Group(*parent))
  86         , _delta_command(NULL)
  87         , _mouse_state(None)
  88         , _pressed_button(0)
  89
  90 {
  91         _note_group->raise_to_top();
  92 }
  93
  94 void
  95 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  96 {
  97         if (wfd)
  98                 midi_region()->midi_source(0)->load_model();
  99
 100         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
 101         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
 102         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
 103                         / m.beats_per_bar();
 104
 105         _model = midi_region()->midi_source(0)->model();
 106         _enable_display = false;
 107
 108         RegionView::init (basic_color, false);
 109
 110         compute_colors (basic_color);
 111
 112         set_height (trackview.current_height());
 113
 114         region_muted ();
 115         region_sync_changed ();
 116         region_resized (BoundsChanged);
 117         region_locked ();
 118
 119         reset_width_dependent_items (_pixel_width);
 120         //reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 121
 122         set_colors ();
 123
 124         _enable_display = true;
 125         if (_model) {
 126                 if (wfd) {
 127                         redisplay_model();
 128                 }
 129                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 130         }
 131
 132         group->raise_to_top();
 133         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 134
 135         midi_view()->signal_channel_mode_changed().connect(
 136                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 137 }
 138
 139 bool
 140 MidiRegionView::canvas_event(GdkEvent* ev)
 141 {
 142         static bool delete_mod = false;
 143         static Editing::MidiEditMode original_mode;
 144
 145         static double drag_start_x, drag_start_y;
 146         static double last_x, last_y;
 147         double event_x, event_y;
 148         nframes64_t event_frame = 0;
 149
 150         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 151
 152         if (trackview.editor.current_mouse_mode() != MouseNote)
 153                 return false;
 154
 155         // Mmmm, spaghetti
 156
 157         switch (ev->type) {
 158         case GDK_KEY_PRESS:
 159                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 160                         delete_mod = true;
 161                         original_mode = trackview.editor.current_midi_edit_mode();
 162                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 163                         start_delta_command(_("erase notes"));
 164                         _mouse_state = EraseTouchDragging;
 165                         return true;
 166                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 167                         _mouse_state = SelectTouchDragging;
 168                         return true;
 169                 } else if (ev->key.keyval == GDK_Escape) {
 170                         clear_selection();
 171                         _mouse_state = None;
 172                 }
 173                 return false;
 174
 175         case GDK_KEY_RELEASE:
 176                 if (ev->key.keyval == GDK_Delete) {
 177                         if (_mouse_state == EraseTouchDragging) {
 178                                 delete_selection();
 179                                 apply_command();
 180                         }
 181                         if (delete_mod) {
 182                                 trackview.editor.set_midi_edit_mode(original_mode);
 183                                 _mouse_state = None;
 184                                 delete_mod = false;
 185                         }
 186                         return true;
 187                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 188                         _mouse_state = None;
 189                         return true;
 190                 }
 191                 return false;
 192
 193         case GDK_BUTTON_PRESS:
 194                 if (_mouse_state != SelectTouchDragging &&
 195                         _mouse_state != EraseTouchDragging &&
 196                         ev->button.button == 1) {
 197                         _pressed_button = ev->button.button;
 198                         _mouse_state = Pressed;
 199                         return true;
 200                 }
 201                 _pressed_button = ev->button.button;
 202                 return true;
 203
 204         case GDK_2BUTTON_PRESS:
 205                 return true;
 206
 207         case GDK_ENTER_NOTIFY:
 208                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 209                 Keyboard::magic_widget_grab_focus();
 210                 group->grab_focus();
 211                 break;
 212
 213         case GDK_MOTION_NOTIFY:
 214                 event_x = ev->motion.x;
 215                 event_y = ev->motion.y;
 216                 group->w2i(event_x, event_y);
 217
 218                 // convert event_x to global frame
 219                 event_frame = trackview.editor.pixel_to_frame(event_x) + _region->position();
 220                 trackview.editor.snap_to(event_frame);
 221                 // convert event_frame back to local coordinates relative to position
 222                 event_frame -= _region->position();
 223
 224                 switch (_mouse_state) {
 225                 case Pressed: // Drag start
 226
 227                         // Select drag start
 228                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 229                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 230                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 231                                 last_x = event_x;
 232                                 last_y = event_y;
 233                                 drag_start_x = event_x;
 234                                 drag_start_y = event_y;
 235
 236                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 237                                 drag_rect->property_x1() = event_x;
 238                                 drag_rect->property_y1() = event_y;
 239                                 drag_rect->property_x2() = event_x;
 240                                 drag_rect->property_y2() = event_y;
 241                                 drag_rect->property_outline_what() = 0xFF;
 242                                 drag_rect->property_outline_color_rgba()
 243                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 244                                 drag_rect->property_fill_color_rgba()
 245                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 246
 247                                 _mouse_state = SelectRectDragging;
 248                                 return true;
 249
 250                         // Add note drag start
 251                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 252                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 253                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 254                                 last_x = event_x;
 255                                 last_y = event_y;
 256                                 drag_start_x = event_x;
 257                                 drag_start_y = event_y;
 258
 259                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 260                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 261
 262                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 263                                 drag_rect->property_x2() = event_x;
 264                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 265                                 drag_rect->property_outline_what() = 0xFF;
 266                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 267
 268                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 269
 270                                 _mouse_state = AddDragging;
 271                                 return true;
 272                         }
 273
 274                         return false;
 275
 276                 case SelectRectDragging: // Select drag motion
 277                 case AddDragging: // Add note drag motion
 278                         if (ev->motion.is_hint) {
 279                                 int t_x;
 280                                 int t_y;
 281                                 GdkModifierType state;
 282                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 283                                 event_x = t_x;
 284                                 event_y = t_y;
 285                         }
 286
 287                         if (_mouse_state == AddDragging)
 288                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 289
 290                         if (drag_rect) {
 291                                 if (event_x > drag_start_x)
 292                                         drag_rect->property_x2() = event_x;
 293                                 else
 294                                         drag_rect->property_x1() = event_x;
 295                         }
 296
 297                         if (drag_rect && _mouse_state == SelectRectDragging) {
 298                                 if (event_y > drag_start_y)
 299                                         drag_rect->property_y2() = event_y;
 300                                 else
 301                                         drag_rect->property_y1() = event_y;
 302
 303                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 304                         }
 305
 306                         last_x = event_x;
 307                         last_y = event_y;
 308
 309                 case EraseTouchDragging:
 310                 case SelectTouchDragging:
 311                         return false;
 312
 313                 default:
 314                         break;
 315                 }
 316                 break;
 317
 318         case GDK_BUTTON_RELEASE:
 319                 event_x = ev->motion.x;
 320                 event_y = ev->motion.y;
 321                 group->w2i(event_x, event_y);
 322                 group->ungrab(ev->button.time);
 323                 event_frame = trackview.editor.pixel_to_frame(event_x);
 324
 325                 if (_pressed_button != 1) {
 326                         return false;
 327                 }
 328
 329                 switch (_mouse_state) {
 330                 case Pressed: // Clicked
 331                         switch (trackview.editor.current_midi_edit_mode()) {
 332                         case MidiEditSelect:
 333                         case MidiEditResize:
 334                                 clear_selection();
 335                                 break;
 336                         case MidiEditPencil:
 337                                 create_note_at(event_x, event_y, _default_note_length);
 338                         default: break;
 339                         }
 340                         _mouse_state = None;
 341                         break;
 342                 case SelectRectDragging: // Select drag done
 343                         _mouse_state = None;
 344                         delete drag_rect;
 345                         drag_rect = NULL;
 346                         break;
 347                 case AddDragging: // Add drag done
 348                         _mouse_state = None;
 349                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 350                                 const double x      = drag_rect->property_x1();
 351                                 const double length = trackview.editor.pixel_to_frame(
 352                                                         drag_rect->property_x2() - drag_rect->property_x1());
 353
 354                                 create_note_at(x, drag_rect->property_y1(), length);
 355                         }
 356
 357                         delete drag_rect;
 358                         drag_rect = NULL;
 359                 default: break;
 360                 }
 361
 362         default: break;
 363         }
 364
 365         return false;
 366 }
 367
 368
 369 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 370 void
 371 MidiRegionView::create_note_at(double x, double y, double length)
 372 {
 373         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 374         MidiStreamView* const view = mtv->midi_view();
 375
 376         double note = midi_stream_view()->y_to_note(y);
 377
 378         assert(note >= 0.0);
 379         assert(note <= 127.0);
 380
 381         nframes64_t new_note_time = trackview.editor.pixel_to_frame (x);
 382         assert(new_note_time >= 0);
 383         new_note_time += _region->start();
 384
 385         /*
 386         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 387         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 388         double length = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 389         */
 390
 391         // we need to snap here again in nframes64_t in order to be sample accurate
 392         // since note time is region-absolute but snap_to_frame expects position-relative
 393         // time we have to coordinate transform back and forth here.
 394         nframes64_t new_note_time_position_relative = new_note_time      - _region->start();
 395         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 396
 397         // we need to snap the length too to be sample accurate
 398         nframes64_t new_note_length = nframes_t(length);
 399         new_note_length = snap_to_frame(new_note_time_position_relative + new_note_length) + _region->start()
 400                             - new_note_time;
 401
 402         const boost::shared_ptr<Evoral::Note> new_note(new Evoral::Note(
 403                         0, new_note_time, new_note_length, (uint8_t)note, 0x40));
 404         view->update_note_range(new_note->note());
 405
 406         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 407         cmd->add(new_note);
 408         _model->apply_command(trackview.session(), cmd);
 409 }
 410
 411
 412 void
 413 MidiRegionView::clear_events()
 414 {
 415         clear_selection();
 416
 417         MidiGhostRegion* gr;
 418         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 419                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 420                         gr->clear_events();
 421                 }
 422         }
 423
 424         for (Events::iterator i = _events.begin(); i != _events.end(); ++i)
 425                 delete *i;
 426
 427         _events.clear();
 428         _pgm_changes.clear();
 429 }
 430
 431
 432 void
 433 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 434 {
 435         _model = model;
 436
 437         if (_enable_display)
 438                 redisplay_model();
 439 }
 440
 441
 442 void
 443 MidiRegionView::start_delta_command(string name)
 444 {
 445         if (!_delta_command)
 446                 _delta_command = _model->new_delta_command(name);
 447 }
 448
 449 void
 450 MidiRegionView::command_add_note(const boost::shared_ptr<Evoral::Note> note, bool selected)
 451 {
 452         if (_delta_command)
 453                 _delta_command->add(note);
 454
 455         if (selected)
 456                 _marked_for_selection.insert(note);
 457 }
 458
 459 void
 460 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 461 {
 462         if (_delta_command && ev->note()) {
 463                 _delta_command->remove(ev->note());
 464         }
 465 }
 466
 467 void
 468 MidiRegionView::apply_command()
 469 {
 470         if (!_delta_command) {
 471                 return;
 472         }
 473
 474         // Mark all selected notes for selection when model reloads
 475         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 476                 _marked_for_selection.insert((*i)->note());
 477         }
 478
 479         _model->apply_command(trackview.session(), _delta_command);
 480         _delta_command = NULL;
 481         midi_view()->midi_track()->diskstream()->playlist_modified();
 482
 483         _marked_for_selection.clear();
 484 }
 485
 486
 487 void
 488 MidiRegionView::abort_command()
 489 {
 490         delete _delta_command;
 491         _delta_command = NULL;
 492         clear_selection();
 493 }
 494
 495
 496 void
 497 MidiRegionView::redisplay_model()
 498 {
 499         // Don't redisplay the model if we're currently recording and displaying that
 500         if (_active_notes)
 501                 return;
 502
 503         if (_model) {
 504
 505                 clear_events();
 506                 _model->read_lock();
 507
 508                 /*MidiModel::Notes notes = _model->notes();
 509                 cerr << endl << _model->midi_source()->name() << " : redisplaying " << notes.size() << " notes:" << endl;
 510                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 511                         cerr << "NOTE  time: " << (*i)->time()
 512                                  << "  pitch: " << int((*i)->note())
 513                              << "  length: " << (*i)->length()
 514                              << "  end-time: " << (*i)->end_time()
 515                              << "  velocity: " << int((*i)->velocity())
 516                              << endl;
 517                 }*/
 518
 519                 for (size_t i = 0; i < _model->n_notes(); ++i)
 520                         add_note(_model->note_at(i));
 521
 522                 // Draw program change 'flags'
 523                 for (Automatable::Controls::iterator control = _model->controls().begin();
 524                                 control != _model->controls().end(); ++control) {
 525                         if (control->first.type() == MidiPgmChangeAutomation) {
 526                                 Glib::Mutex::Lock list_lock (control->second->list()->lock());
 527
 528                                 for (AutomationList::const_iterator event = control->second->list()->begin();
 529                                                 event != control->second->list()->end(); ++event) {
 530                                         Evoral::ControlIterator iter(control->second->list(), (*event)->when, (*event)->value);
 531                                         boost::shared_ptr<Evoral::Event> event(new Evoral::Event());
 532                                         _model->control_to_midi_event(event, iter);
 533                                         add_pgm_change(event);
 534                                 }
 535                                 break;
 536                         }
 537                 }
 538
 539                 // Is this necessary?
 540                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 541                                 i != _model->controls().end(); ++i) {
 542
 543                         assert(i->second);
 544
 545                         boost::shared_ptr<AutomationTimeAxisView> at
 546                                 = midi_view()->automation_child(i->second->parameter());
 547                         if (!at)
 548                                 continue;
 549
 550                         Gdk::Color col = midi_stream_view()->get_region_color();
 551
 552                         boost::shared_ptr<AutomationRegionView> arv;
 553
 554                         {
 555                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 556
 557                                 arv = boost::shared_ptr<AutomationRegionView>(
 558                                                 new AutomationRegionView(at->canvas_display,
 559                                                         *at.get(), _region, i->second->list(),
 560                                                         midi_stream_view()->get_samples_per_unit(), col));
 561                         }
 562
 563                         arv->set_duration(_region->length(), this);
 564                         arv->init(col, true);
 565
 566                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 567                 }*/
 568
 569                 _model->read_unlock();
 570
 571         } else {
 572                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 573         }
 574 }
 575
 576
 577 MidiRegionView::~MidiRegionView ()
 578 {
 579         in_destructor = true;
 580
 581         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 582
 583         if (_active_notes) {
 584                 end_write();
 585         }
 586
 587         _selection.clear();
 588         clear_events();
 589         delete _note_group;
 590         delete _delta_command;
 591 }
 592
 593
 594 void
 595 MidiRegionView::region_resized (Change what_changed)
 596 {
 597         RegionView::region_resized(what_changed);
 598
 599         if (what_changed & ARDOUR::PositionChanged) {
 600                 if (_enable_display)
 601                         redisplay_model();
 602         }
 603 }
 604
 605 void
 606 MidiRegionView::reset_width_dependent_items (double pixel_width)
 607 {
 608         RegionView::reset_width_dependent_items(pixel_width);
 609         assert(_pixel_width == pixel_width);
 610
 611         if (_enable_display)
 612                 redisplay_model();
 613 }
 614
 615 void
 616 MidiRegionView::set_height (gdouble height)
 617 {
 618         static const double FUDGE = 2;
 619         const double old_height = _height;
 620         RegionView::set_height(height);
 621         _height = height - FUDGE;
 622
 623         apply_note_range(midi_stream_view()->lowest_note(),
 624                          midi_stream_view()->highest_note(),
 625                          height != old_height + FUDGE);
 626
 627         if (name_text) {
 628                 name_text->raise_to_top();
 629         }
 630 }
 631
 632
 633 /** Apply the current note range from the stream view
 634  * by repositioning/hiding notes as necessary
 635  */
 636 void
 637 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 638 {
 639         if (_enable_display) {
 640                 if (!force && _current_range_min == min && _current_range_max == max) {
 641                         return;
 642                 }
 643
 644                 _current_range_min = min;
 645                 _current_range_max = max;
 646
 647                 for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 648                         CanvasNoteEvent* event = *i;
 649                         Item* item = dynamic_cast<Item*>(event);
 650                         assert(item);
 651                         if (event && event->note()) {
 652                                 if (event->note()->note() < _current_range_min || event->note()->note() > _current_range_max) {
 653                                         if (canvas_item_visible(item)) {
 654                                                 item->hide();
 655                                         }
 656                                 } else {
 657                                         if (!canvas_item_visible(item)) {
 658                                                 item->show();
 659                                         }
 660
 661                                         event->hide_velocity();
 662                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 663                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 664                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 665
 666                                                 note->property_y1() = y1;
 667                                                 note->property_y2() = y2;
 668                                         } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 669                                                 double x = trackview.editor.frame_to_pixel((nframes64_t)
 670                                                                 event->note()->time() - _region->start());
 671                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 672                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 673                                                                  + ((diamond_size-2.0) / 4.0);
 674
 675                                                 hit->set_height(diamond_size);
 676                                                 hit->move(x-hit->x1(), y-hit->y1());
 677                                                 hit->show();
 678                                         }
 679                                         if (event->selected()) {
 680                                                 event->show_velocity();
 681                                         }
 682                                 }
 683                         }
 684                 }
 685
 686         }
 687 }
 688
 689 GhostRegion*
 690 MidiRegionView::add_ghost (TimeAxisView& tv)
 691 {
 692         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 693         CanvasNote* note;
 694         assert(rtv);
 695
 696         double unit_position = _region->position () / samples_per_unit;
 697         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 698         MidiGhostRegion* ghost;
 699
 700         if (mtv && mtv->midi_view()) {
 701                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 702                    this is because it's nice to have midi notes on top of the note lines and
 703                    audio waveforms under it.
 704                  */
 705                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 706         }
 707         else {
 708                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 709         }
 710
 711         ghost->set_height ();
 712         ghost->set_duration (_region->length() / samples_per_unit);
 713         ghosts.push_back (ghost);
 714
 715         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 716                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 717                         ghost->add_note(note);
 718                 }
 719         }
 720
 721         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 722
 723         return ghost;
 724 }
 725
 726
 727 /** Begin tracking note state for successive calls to add_event
 728  */
 729 void
 730 MidiRegionView::begin_write()
 731 {
 732         assert(!_active_notes);
 733         _active_notes = new CanvasNote*[128];
 734         for (unsigned i=0; i < 128; ++i) {
 735                 _active_notes[i] = NULL;
 736         }
 737 }
 738
 739
 740 /** Destroy note state for add_event
 741  */
 742 void
 743 MidiRegionView::end_write()
 744 {
 745         delete[] _active_notes;
 746         _active_notes = NULL;
 747         _marked_for_selection.clear();
 748 }
 749
 750
 751 /** Resolve an active MIDI note (while recording).
 752  */
 753 void
 754 MidiRegionView::resolve_note(uint8_t note, double end_time)
 755 {
 756         if (midi_view()->note_mode() != Sustained)
 757                 return;
 758
 759         if (_active_notes && _active_notes[note]) {
 760                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes64_t)end_time);
 761                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 762                 _active_notes[note] = NULL;
 763         }
 764 }
 765
 766
 767 /** Extend active notes to rightmost edge of region (if length is changed)
 768  */
 769 void
 770 MidiRegionView::extend_active_notes()
 771 {
 772         if (!_active_notes) {
 773                 return;
 774         }
 775
 776         for (unsigned i=0; i < 128; ++i) {
 777                 if (_active_notes[i]) {
 778                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 779                 }
 780         }
 781 }
 782
 783
 784 /** Add a MIDI note to the view (with length).
 785  *
 786  * If in sustained mode, notes with length 0 will be considered active
 787  * notes, and resolve_note should be called when the corresponding note off
 788  * event arrives, to properly display the note.
 789  */
 790 void
 791 MidiRegionView::add_note(const boost::shared_ptr<Evoral::Note> note)
 792 {
 793         assert(note->time() >= 0);
 794         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 795
 796         // dont display notes beyond the region bounds
 797         if ( note->time() - _region->start() >= _region->length() ||
 798                 note->time() <  _region->start() ||
 799                 note->note() < midi_stream_view()->lowest_note() ||
 800                 note->note() > midi_stream_view()->highest_note() ) {
 801                 return;
 802         }
 803
 804         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 805
 806         CanvasNoteEvent* event = 0;
 807
 808         const double x = trackview.editor.frame_to_pixel((nframes64_t)note->time() - _region->start());
 809
 810         if (midi_view()->note_mode() == Sustained) {
 811
 812                 const double y1 = midi_stream_view()->note_to_y(note->note());
 813                 const double note_endpixel =
 814                         trackview.editor.frame_to_pixel((nframes64_t)note->end_time() - _region->start());
 815
 816                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 817                 ev_rect->property_x1() = x;
 818                 ev_rect->property_y1() = y1;
 819                 if (note->length() > 0)
 820                         ev_rect->property_x2() = note_endpixel;
 821                 else
 822                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 823                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 824
 825                 if (note->length() == 0) {
 826
 827                         if (_active_notes) {
 828                                 assert(note->note() < 128);
 829                                 // If this note is already active there's a stuck note,
 830                                 // finish the old note rectangle
 831                                 if (_active_notes[note->note()]) {
 832                                         CanvasNote* const old_rect = _active_notes[note->note()];
 833                                         boost::shared_ptr<Evoral::Note> old_note = old_rect->note();
 834                                         cerr << "MidiModel: WARNING: Note has length 0: chan " << old_note->channel()
 835                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 836                                         /* FIXME: How large to make it?  Make it a diamond? */
 837                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 838                                         old_rect->property_outline_what() = (guint32) 0xF;
 839                                 }
 840                                 _active_notes[note->note()] = ev_rect;
 841                         }
 842                         /* outline all but right edge */
 843                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 844                 } else {
 845                         /* outline all edges */
 846                         ev_rect->property_outline_what() = (guint32) 0xF;
 847                 }
 848
 849                 ev_rect->show();
 850                 _events.push_back(ev_rect);
 851                 event = ev_rect;
 852
 853                 MidiGhostRegion* gr;
 854
 855                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 856                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 857                                 gr->add_note(ev_rect);
 858                         }
 859                 }
 860
 861         } else if (midi_view()->note_mode() == Percussive) {
 862
 863                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
 864                 //      << " .. " << note->end_time() << endl;
 865
 866                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 867                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 868
 869                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 870                 ev_diamond->move(x, y);
 871                 ev_diamond->show();
 872                 _events.push_back(ev_diamond);
 873                 event = ev_diamond;
 874         } else {
 875                 event = 0;
 876         }
 877
 878         if (event) {
 879                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 880                         note_selected(event, true);
 881                 }
 882                 event->on_channel_selection_change(_last_channel_selection);
 883         }
 884 }
 885
 886 void
 887 MidiRegionView::add_pgm_change(boost::shared_ptr<Evoral::Event> event)
 888 {
 889         assert(event->time() >= 0);
 890
 891         // dont display notes beyond the region bounds
 892         if (event->time() - _region->start() >= _region->length() || event->time() <  _region->start())
 893                 return;
 894
 895         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 896         const double x = trackview.editor.frame_to_pixel((nframes64_t)event->time() - _region->start());
 897
 898         double height = midi_stream_view()->contents_height();
 899         _pgm_changes.push_back(
 900                 boost::shared_ptr<CanvasProgramChange>(
 901                         new CanvasProgramChange(*this, *group, event, height, x, 1.0)));
 902 }
 903
 904 void
 905 MidiRegionView::delete_selection()
 906 {
 907         assert(_delta_command);
 908
 909         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 910                 if ((*i)->selected()) {
 911                         _delta_command->remove((*i)->note());
 912                 }
 913         }
 914
 915         _selection.clear();
 916 }
 917
 918 void
 919 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
 920 {
 921         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 922                 if ((*i)->selected() && (*i) != ev) {
 923                         (*i)->selected(false);
 924                 }
 925         }
 926
 927         _selection.clear();
 928 }
 929
 930 void
 931 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
 932 {
 933         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 934                 if ((*i) != ev) {
 935                         (*i)->selected(false);
 936                 }
 937         }
 938
 939         _selection.clear();
 940         _selection.insert(ev);
 941
 942         if ( ! ev->selected()) {
 943                 ev->selected(true);
 944         }
 945 }
 946
 947 void
 948 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 949 {
 950         if ( ! add) {
 951                 clear_selection_except(ev);
 952         }
 953
 954         _selection.insert(ev);
 955
 956         if ( ! ev->selected()) {
 957                 ev->selected(true);
 958         }
 959 }
 960
 961
 962 void
 963 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 964 {
 965         if ( ! add) {
 966                 clear_selection_except(ev);
 967         }
 968
 969         _selection.erase(ev);
 970
 971         if (ev->selected()) {
 972                 ev->selected(false);
 973         }
 974 }
 975
 976
 977 void
 978 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 979 {
 980         const double last_y = std::min(y1, y2);
 981         const double y      = std::max(y1, y2);
 982
 983         // TODO: Make this faster by storing the last updated selection rect, and only
 984         // adjusting things that are in the area that appears/disappeared.
 985         // We probably need a tree to be able to find events in O(log(n)) time.
 986
 987 #ifndef NDEBUG
 988         double last_x1 = 0.0;
 989 #endif
 990
 991         if (x1 < x2) {
 992                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 993 #ifndef NDEBUG
 994                         // Events should always be sorted by increasing x1() here
 995                         assert((*i)->x1() >= last_x1);
 996                         last_x1 = (*i)->x1();
 997 #endif
 998                         // Inside rectangle
 999                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1000                                 if (!(*i)->selected()) {
1001                                         (*i)->selected(true);
1002                                         _selection.insert(*i);
1003                                 }
1004                         // Not inside rectangle
1005                         } else if ((*i)->selected()) {
1006                                 (*i)->selected(false);
1007                                 _selection.erase(*i);
1008                         }
1009                 }
1010         } else {
1011                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1012 #ifndef NDEBUG
1013                         // Events should always be sorted by increasing x1() here
1014                         assert((*i)->x1() >= last_x1);
1015                         last_x1 = (*i)->x1();
1016 #endif
1017                         // Inside rectangle
1018                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1019                                 if (!(*i)->selected()) {
1020                                         (*i)->selected(true);
1021                                         _selection.insert(*i);
1022                                 }
1023                         // Not inside rectangle
1024                         } else if ((*i)->selected()) {
1025                                 (*i)->selected(false);
1026                                 _selection.erase(*i);
1027                         }
1028                 }
1029         }
1030 }
1031
1032
1033 void
1034 MidiRegionView::move_selection(double dx, double dy)
1035 {
1036         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1037                 (*i)->move_event(dx, dy);
1038 }
1039
1040
1041 void
1042 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1043 {
1044         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1045         if (_selection.find(ev) != _selection.end()) {
1046                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1047                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1048                 uint8_t highest_note_difference = 0;
1049
1050                 // find highest and lowest notes first
1051                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1052                         uint8_t pitch = (*i)->note()->note();
1053                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1054                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1055                 }
1056
1057                 /*
1058                 cerr << "dnote: " << (int) dnote << endl;
1059                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1060                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1061                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1062                      << int(highest_note_in_selection) << endl;
1063                 cerr << "selection size: " << _selection.size() << endl;
1064                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1065                 */
1066
1067                 // Make sure the note pitch does not exceed the MIDI standard range
1068                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1069                         highest_note_difference = highest_note_in_selection - 127;
1070                 }
1071
1072                 start_delta_command(_("move notes"));
1073
1074                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1075                         Selection::iterator next = i;
1076                         ++next;
1077
1078                         const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(*i)->note().get()));
1079
1080                         // we need to snap here again in nframes64_t in order to be sample accurate
1081                         double new_note_time = (*i)->note()->time();
1082                         new_note_time +=  dt;
1083
1084                         // keep notes inside region if dragged beyond left region bound
1085                         if (new_note_time < _region->start()) {
1086                                 new_note_time = _region->start();
1087                         }
1088
1089                         // since note time is region-absolute but snap_to_frame expects position-relative
1090                         // time we have to coordinate transform back and forth here.
1091                         new_note_time = snap_to_frame(nframes64_t(new_note_time) - _region->start()) + _region->start();
1092
1093                         copy->set_time(new_note_time);
1094
1095                         uint8_t original_pitch = (*i)->note()->note();
1096                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
1097
1098                         // keep notes in standard midi range
1099                         clamp_0_to_127(new_pitch);
1100
1101                         //notes which are dragged beyond the standard midi range snap back to their original place
1102                         if ((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
1103                                 new_pitch = original_pitch;
1104                         }
1105
1106                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1107                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1108
1109                         copy->set_note(new_pitch);
1110
1111                         command_remove_note(*i);
1112                         command_add_note(copy, true);
1113
1114                         i = next;
1115                 }
1116
1117                 apply_command();
1118
1119                 // care about notes being moved beyond the upper/lower bounds on the canvas
1120                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1121                                 highest_note_in_selection > midi_stream_view()->highest_note()) {
1122                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1123                 }
1124         }
1125 }
1126
1127 nframes64_t
1128 MidiRegionView::snap_to_frame(double x)
1129 {
1130         PublicEditor &editor = trackview.editor;
1131         // x is region relative
1132         // convert x to global frame
1133         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1134         editor.snap_to(frame);
1135         // convert event_frame back to local coordinates relative to position
1136         frame -= _region->position();
1137         return frame;
1138 }
1139
1140 nframes64_t
1141 MidiRegionView::snap_to_frame(nframes64_t x)
1142 {
1143         PublicEditor &editor = trackview.editor;
1144         // x is region relative
1145         // convert x to global frame
1146         nframes64_t frame = x + _region->position();
1147         editor.snap_to(frame);
1148         // convert event_frame back to local coordinates relative to position
1149         frame -= _region->position();
1150         return frame;
1151 }
1152
1153 double
1154 MidiRegionView::snap_to_pixel(double x)
1155 {
1156         return (double) trackview.editor.frame_to_pixel(snap_to_frame(x));
1157 }
1158
1159 double
1160 MidiRegionView::get_position_pixels(void)
1161 {
1162         nframes64_t  region_frame  = get_position();
1163         return trackview.editor.frame_to_pixel(region_frame);
1164 }
1165
1166 void
1167 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1168 {
1169         _resize_data.clear();
1170
1171         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1172                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1173
1174                 // only insert CanvasNotes into the map
1175                 if (note) {
1176                         NoteResizeData *resize_data = new NoteResizeData();
1177                         resize_data->canvas_note = note;
1178
1179                         // create a new SimpleRect from the note which will be the resize preview
1180                         SimpleRect *resize_rect =
1181                                 new SimpleRect(
1182                                                 *group,
1183                                                 note->x1(),
1184                                                 note->y1(),
1185                                                 note->x2(),
1186                                                 note->y2());
1187
1188                         // calculate the colors: get the color settings
1189                         uint32_t fill_color =
1190                                 UINT_RGBA_CHANGE_A(
1191                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(),
1192                                                 128);
1193
1194                         // make the resize preview notes more transparent and bright
1195                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1196
1197                         // calculate color based on note velocity
1198                         resize_rect->property_fill_color_rgba() =
1199                                 UINT_INTERPOLATE(
1200                                         note_fill_color(note->note()->velocity()),
1201                                         fill_color,
1202                                         0.85);
1203
1204                         resize_rect->property_outline_color_rgba() =
1205                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
1206
1207                         resize_data->resize_rect = resize_rect;
1208
1209                         if (note_end == CanvasNote::NOTE_ON) {
1210                                 resize_data->current_x = note->x1();
1211                         } else { // NOTE_OFF
1212                                 resize_data->current_x = note->x2();
1213                         }
1214
1215                         _resize_data.push_back(resize_data);
1216                 }
1217         }
1218 }
1219
1220 void
1221 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1222 {
1223         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1224                 SimpleRect     *resize_rect = (*i)->resize_rect;
1225                 CanvasNote     *canvas_note = (*i)->canvas_note;
1226
1227                 const double region_start = get_position_pixels();
1228
1229                 if (relative) {
1230                         (*i)->current_x = (*i)->current_x + x;
1231                 } else {
1232                         // x is in track relative, transform it to region relative
1233                         (*i)->current_x = x - region_start;
1234                 }
1235
1236                 double current_x = (*i)->current_x;
1237
1238                 if (note_end == CanvasNote::NOTE_ON) {
1239                         resize_rect->property_x1() = snap_to_pixel(current_x);
1240                         resize_rect->property_x2() = canvas_note->x2();
1241                 } else {
1242                         resize_rect->property_x2() = snap_to_pixel(current_x);
1243                         resize_rect->property_x1() = canvas_note->x1();
1244                 }
1245         }
1246 }
1247
1248 void
1249 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1250 {
1251         start_delta_command(_("resize notes"));
1252
1253         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1254                 CanvasNote*  canvas_note = (*i)->canvas_note;
1255                 SimpleRect*  resize_rect = (*i)->resize_rect;
1256                 double       current_x   = (*i)->current_x;
1257                 const double position    = get_position_pixels();
1258
1259                 if (!relative) {
1260                         // event_x is in track relative, transform it to region relative
1261                         current_x = event_x - position;
1262                 }
1263
1264                 // because snapping works on world coordinates we have to transform current_x
1265                 // to world coordinates before snapping and transform it back afterwards
1266                 nframes64_t current_frame = snap_to_frame(current_x);
1267                 // transform to region start relative
1268                 current_frame += _region->start();
1269
1270                 const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(canvas_note->note().get())));
1271
1272                 // resize beginning of note
1273                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1274                         command_remove_note(canvas_note);
1275                         copy->on_event().time() = current_frame;
1276                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1277                 }
1278                 // resize end of note
1279                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1280                         command_remove_note(canvas_note);
1281                         copy->off_event().time() = current_frame;
1282                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1283                 }
1284
1285                 delete resize_rect;
1286                 delete (*i);
1287         }
1288
1289         _resize_data.clear();
1290         apply_command();
1291 }
1292
1293
1294 void
1295 MidiRegionView::change_velocity(uint8_t velocity, bool relative)
1296 {
1297         start_delta_command(_("change velocity"));
1298         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1299                 Selection::iterator next = i;
1300                 ++next;
1301
1302                 CanvasNoteEvent *event = *i;
1303                 const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(event->note().get())));
1304
1305                 if (relative) {
1306                         uint8_t new_velocity = copy->velocity() + velocity;
1307                         clamp_0_to_127(new_velocity);
1308
1309                         copy->set_velocity(new_velocity);
1310                 } else { // absolute
1311                         copy->set_velocity(velocity);
1312                 }
1313
1314                 command_remove_note(event);
1315                 command_add_note(copy, true);
1316
1317                 i = next;
1318         }
1319
1320         apply_command();
1321 }
1322
1323 void
1324 MidiRegionView::change_channel(uint8_t channel)
1325 {
1326         start_delta_command(_("change channel"));
1327         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1328                 Selection::iterator next = i;
1329                 ++next;
1330
1331                 CanvasNoteEvent *event = *i;
1332                 const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(event->note().get())));
1333
1334                 copy->set_channel(channel);
1335
1336                 command_remove_note(event);
1337                 command_add_note(copy, true);
1338
1339                 i = next;
1340         }
1341
1342         apply_command();
1343 }
1344
1345
1346 void
1347 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1348 {
1349         if (ev->note() && _mouse_state == EraseTouchDragging) {
1350                 start_delta_command(_("note entered"));
1351                 ev->selected(true);
1352                 _delta_command->remove(ev->note());
1353         } else if (_mouse_state == SelectTouchDragging) {
1354                 note_selected(ev, true);
1355         }
1356 }
1357
1358
1359 void
1360 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1361 {
1362         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1363         if (msrc)
1364                 display_model(msrc->model());
1365 }
1366
1367 void
1368 MidiRegionView::set_frame_color()
1369 {
1370         if (frame) {
1371                 if (_selected && should_show_selection) {
1372                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1373                 } else {
1374                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1375                 }
1376         }
1377 }
1378
1379 void
1380 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1381 {
1382         switch (mode) {
1383         case AllChannels:
1384         case FilterChannels:
1385                 _force_channel = -1;
1386                 break;
1387         case ForceChannel:
1388                 _force_channel = mask;
1389                 mask = 0xFFFF; // Show all notes as active (below)
1390         };
1391
1392         // Update notes for selection
1393         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1394                 (*i)->on_channel_selection_change(mask);
1395         }
1396
1397         _last_channel_selection = mask;
1398 }
1399