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