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_y_position_and_height (0, 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<Note> new_note(new Note(0, new_note_time, new_note_duration, (uint8_t)note, 0x40));
 401         view->update_bounds(new_note->note());
 402
 403         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 404         cmd->add(new_note);
 405         _model->apply_command(cmd);
 406 }
 407
 408
 409 void
 410 MidiRegionView::clear_events()
 411 {
 412         clear_selection();
 413
 414         MidiGhostRegion* gr;
 415         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 416                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 417                         gr->clear_events();
 418                 }
 419         }
 420
 421         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 422                 delete *i;
 423
 424         _events.clear();
 425         _pgm_changes.clear();
 426 }
 427
 428
 429 void
 430 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 431 {
 432         _model = model;
 433
 434         if (_enable_display)
 435                 redisplay_model();
 436 }
 437
 438
 439 void
 440 MidiRegionView::start_delta_command(string name)
 441 {
 442         if (!_delta_command)
 443                 _delta_command = _model->new_delta_command(name);
 444 }
 445
 446 void
 447 MidiRegionView::command_add_note(const boost::shared_ptr<ARDOUR::Note> note, bool selected)
 448 {
 449         if (_delta_command)
 450                 _delta_command->add(note);
 451
 452         if (selected)
 453                 _marked_for_selection.insert(note);
 454 }
 455
 456 void
 457 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 458 {
 459         if (_delta_command && ev->note()) {
 460                 _delta_command->remove(ev->note());
 461         }
 462 }
 463
 464 void
 465 MidiRegionView::apply_command()
 466 {
 467         if (!_delta_command) {
 468                 return;
 469         }
 470
 471         // Mark all selected notes for selection when model reloads
 472         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 473                 _marked_for_selection.insert((*i)->note());
 474         }
 475
 476         _model->apply_command(_delta_command);
 477         _delta_command = NULL;
 478         midi_view()->midi_track()->diskstream()->playlist_modified();
 479
 480         _marked_for_selection.clear();
 481 }
 482
 483
 484 void
 485 MidiRegionView::abort_command()
 486 {
 487         delete _delta_command;
 488         _delta_command = NULL;
 489         clear_selection();
 490 }
 491
 492
 493 void
 494 MidiRegionView::redisplay_model()
 495 {
 496         // Don't redisplay the model if we're currently recording and displaying that
 497         if (_active_notes)
 498                 return;
 499
 500         if (_model) {
 501
 502                 clear_events();
 503                 _model->read_lock();
 504
 505                 /*MidiModel::Notes notes = _model->notes();
 506                 cerr << endl << _model->midi_source()->name() << " : redisplaying " << notes.size() << " notes:" << endl;
 507                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 508                         cerr << "NOTE  time: " << (*i)->time()
 509                                  << "  pitch: " << int((*i)->note())
 510                              << "  duration: " << (*i)->duration()
 511                              << "  end-time: " << (*i)->end_time()
 512                              << "  velocity: " << int((*i)->velocity())
 513                              << endl;
 514                 }*/
 515
 516                 for (size_t i = 0; i < _model->n_notes(); ++i)
 517                         add_note(_model->note_at(i));
 518
 519                 // Draw program change 'flags'
 520                 for (Automatable::Controls::iterator control = _model->controls().begin();
 521                                 control != _model->controls().end(); ++control) {
 522                         if (control->first.type() == MidiPgmChangeAutomation) {
 523                                 Glib::Mutex::Lock list_lock (control->second->list()->lock());
 524
 525                                 for (AutomationList::const_iterator event = control->second->list()->begin();
 526                                                 event != control->second->list()->end(); ++event) {
 527                                         MidiControlIterator iter(control->second->list(), (*event)->when, (*event)->value);
 528                                         boost::shared_ptr<MIDI::Event> event(new MIDI::Event());
 529                                         _model->control_to_midi_event(event, iter);
 530                                         add_pgm_change(event);
 531                                 }
 532                                 break;
 533                         }
 534                 }
 535
 536                 // Is this necessary?
 537                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 538                                 i != _model->controls().end(); ++i) {
 539
 540                         assert(i->second);
 541
 542                         boost::shared_ptr<AutomationTimeAxisView> at
 543                                 = midi_view()->automation_child(i->second->parameter());
 544                         if (!at)
 545                                 continue;
 546
 547                         Gdk::Color col = midi_stream_view()->get_region_color();
 548
 549                         boost::shared_ptr<AutomationRegionView> arv;
 550
 551                         {
 552                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 553
 554                                 arv = boost::shared_ptr<AutomationRegionView>(
 555                                                 new AutomationRegionView(at->canvas_display,
 556                                                         *at.get(), _region, i->second->list(),
 557                                                         midi_stream_view()->get_samples_per_unit(), col));
 558                         }
 559
 560                         arv->set_duration(_region->length(), this);
 561                         arv->init(col, true);
 562
 563                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 564                 }*/
 565
 566                 _model->read_unlock();
 567
 568         } else {
 569                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 570         }
 571 }
 572
 573
 574 MidiRegionView::~MidiRegionView ()
 575 {
 576         in_destructor = true;
 577
 578         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 579
 580         if (_active_notes) {
 581                 end_write();
 582         }
 583
 584         _selection.clear();
 585         clear_events();
 586         delete _note_group;
 587         delete _delta_command;
 588 }
 589
 590
 591 void
 592 MidiRegionView::region_resized (Change what_changed)
 593 {
 594         RegionView::region_resized(what_changed);
 595
 596         if (what_changed & ARDOUR::PositionChanged) {
 597                 if (_enable_display)
 598                         redisplay_model();
 599         }
 600 }
 601
 602 void
 603 MidiRegionView::reset_width_dependent_items (double pixel_width)
 604 {
 605         RegionView::reset_width_dependent_items(pixel_width);
 606         assert(_pixel_width == pixel_width);
 607
 608         if (_enable_display)
 609                 redisplay_model();
 610 }
 611
 612 void
 613 MidiRegionView::set_y_position_and_height (double y, double h)
 614 {
 615         RegionView::set_y_position_and_height(y, h - 1);
 616
 617         /* XXX why is this code here */
 618
 619         _height = h;
 620
 621         if (_enable_display) {
 622
 623                 _model->read_lock();
 624
 625                 for (std::vector<CanvasNoteEvent*>::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 626                         CanvasNoteEvent* event = *i;
 627                         Item* item = dynamic_cast<Item*>(event);
 628                         assert(item);
 629                         if (event && event->note()) {
 630                                 if (event->note()->note() < midi_stream_view()->lowest_note() ||
 631                                    event->note()->note() > midi_stream_view()->highest_note()) {
 632
 633                                         if (canvas_item_visible(item)) {
 634                                                 item->hide();
 635                                         }
 636                                 } else {
 637                                         if (!canvas_item_visible(item)) {
 638                                                 item->show();
 639                                         }
 640
 641                                         event->hide_velocity();
 642                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 643                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 644                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 645
 646                                                 note->property_y1() = y1;
 647                                                 note->property_y2() = y2;
 648                                         }
 649                                         if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 650                                                 double x = trackview.editor.frame_to_pixel((nframes64_t)
 651                                                                 event->note()->time() - _region->start());
 652                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 653                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 654                                                                  + ((diamond_size-2.0) / 4.0);
 655
 656                                                 hit->set_height(diamond_size);
 657                                                 hit->move(x-hit->x1(), y-hit->y1());
 658                                                 hit->show();
 659                                         }
 660                                         if (event->selected()) {
 661                                                 event->show_velocity();
 662                                         }
 663                                 }
 664                         }
 665                 }
 666
 667                 _model->read_unlock();
 668         }
 669
 670         if (name_text) {
 671                 name_text->raise_to_top();
 672         }
 673 }
 674
 675 GhostRegion*
 676 MidiRegionView::add_ghost (TimeAxisView& tv)
 677 {
 678         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 679         CanvasNote* note;
 680         assert(rtv);
 681
 682         double unit_position = _region->position () / samples_per_unit;
 683         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 684         MidiGhostRegion* ghost;
 685
 686         if (mtv && mtv->midi_view()) {
 687                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 688                    this is because it's nice to have midi notes on top of the note lines and
 689                    audio waveforms under it.
 690                  */
 691                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 692         }
 693         else {
 694                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 695         }
 696
 697         ghost->set_height ();
 698         ghost->set_duration (_region->length() / samples_per_unit);
 699         ghosts.push_back (ghost);
 700
 701         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 702                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 703                         ghost->add_note(note);
 704                 }
 705         }
 706
 707         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 708
 709         return ghost;
 710 }
 711
 712
 713 /** Begin tracking note state for successive calls to add_event
 714  */
 715 void
 716 MidiRegionView::begin_write()
 717 {
 718         assert(!_active_notes);
 719         _active_notes = new CanvasNote*[128];
 720         for (unsigned i=0; i < 128; ++i) {
 721                 _active_notes[i] = NULL;
 722         }
 723 }
 724
 725
 726 /** Destroy note state for add_event
 727  */
 728 void
 729 MidiRegionView::end_write()
 730 {
 731         delete[] _active_notes;
 732         _active_notes = NULL;
 733         _marked_for_selection.clear();
 734 }
 735
 736
 737 /** Resolve an active MIDI note (while recording).
 738  */
 739 void
 740 MidiRegionView::resolve_note(uint8_t note, double end_time)
 741 {
 742         if (midi_view()->note_mode() != Sustained)
 743                 return;
 744
 745         if (_active_notes && _active_notes[note]) {
 746                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes64_t)end_time);
 747                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 748                 _active_notes[note] = NULL;
 749         }
 750 }
 751
 752
 753 /** Extend active notes to rightmost edge of region (if length is changed)
 754  */
 755 void
 756 MidiRegionView::extend_active_notes()
 757 {
 758         if (!_active_notes) {
 759                 return;
 760         }
 761
 762         for (unsigned i=0; i < 128; ++i) {
 763                 if (_active_notes[i]) {
 764                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 765                 }
 766         }
 767 }
 768
 769
 770 /** Add a MIDI note to the view (with duration).
 771  *
 772  * If in sustained mode, notes with duration 0 will be considered active
 773  * notes, and resolve_note should be called when the corresponding note off
 774  * event arrives, to properly display the note.
 775  */
 776 void
 777 MidiRegionView::add_note(const boost::shared_ptr<Note> note)
 778 {
 779         assert(note->time() >= 0);
 780         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 781
 782         // dont display notes beyond the region bounds
 783         if ( note->time() - _region->start() >= _region->length() ||
 784                 note->time() <  _region->start() ||
 785                 note->note() < midi_stream_view()->lowest_note() ||
 786                 note->note() > midi_stream_view()->highest_note() ) {
 787                 return;
 788         }
 789
 790         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 791
 792         CanvasNoteEvent* event = 0;
 793
 794         const double x = trackview.editor.frame_to_pixel((nframes64_t)note->time() - _region->start());
 795
 796         if (midi_view()->note_mode() == Sustained) {
 797
 798                 const double y1 = midi_stream_view()->note_to_y(note->note());
 799                 const double note_endpixel =
 800                         trackview.editor.frame_to_pixel((nframes64_t)note->end_time() - _region->start());
 801
 802                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 803                 ev_rect->property_x1() = x;
 804                 ev_rect->property_y1() = y1;
 805                 if (note->duration() > 0)
 806                         ev_rect->property_x2() = note_endpixel;
 807                 else
 808                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 809                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 810
 811                 if (note->duration() == 0) {
 812
 813                         if (_active_notes) {
 814                                 assert(note->note() < 128);
 815                                 // If this note is already active there's a stuck note,
 816                                 // finish the old note rectangle
 817                                 if (_active_notes[note->note()]) {
 818                                         CanvasNote* const old_rect = _active_notes[note->note()];
 819                                         boost::shared_ptr<ARDOUR::Note> old_note = old_rect->note();
 820                                         cerr << "MidiModel: WARNING: Note has duration 0: chan " << old_note->channel()
 821                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 822                                         /* FIXME: How large to make it?  Make it a diamond? */
 823                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 824                                         old_rect->property_outline_what() = (guint32) 0xF;
 825                                 }
 826                                 _active_notes[note->note()] = ev_rect;
 827                         }
 828                         /* outline all but right edge */
 829                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 830                 } else {
 831                         /* outline all edges */
 832                         ev_rect->property_outline_what() = (guint32) 0xF;
 833                 }
 834
 835                 ev_rect->show();
 836                 _events.push_back(ev_rect);
 837                 event = ev_rect;
 838
 839                 MidiGhostRegion* gr;
 840
 841                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 842                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 843                                 gr->add_note(ev_rect);
 844                         }
 845                 }
 846
 847         } else if (midi_view()->note_mode() == Percussive) {
 848
 849                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
 850                 //      << " .. " << note->end_time() << endl;
 851
 852                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 853                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 854
 855                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 856                 ev_diamond->move(x, y);
 857                 ev_diamond->show();
 858                 _events.push_back(ev_diamond);
 859                 event = ev_diamond;
 860         } else {
 861                 event = 0;
 862         }
 863
 864         if (event) {
 865                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 866                         note_selected(event, true);
 867                 }
 868                 event->on_channel_selection_change(_last_channel_selection);
 869         }
 870 }
 871
 872 void
 873 MidiRegionView::add_pgm_change(boost::shared_ptr<MIDI::Event> event)
 874 {
 875         assert(event->time() >= 0);
 876
 877         // dont display notes beyond the region bounds
 878         if (event->time() - _region->start() >= _region->length() || event->time() <  _region->start())
 879                 return;
 880
 881         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 882         const double x = trackview.editor.frame_to_pixel((nframes64_t)event->time() - _region->start());
 883
 884         double height = midi_stream_view()->contents_height();
 885         _pgm_changes.push_back(
 886                 boost::shared_ptr<CanvasProgramChange>(
 887                         new CanvasProgramChange(*this, *group, event, height, x, 1.0)));
 888 }
 889
 890 void
 891 MidiRegionView::delete_selection()
 892 {
 893         assert(_delta_command);
 894
 895         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 896                 if ((*i)->selected()) {
 897                         _delta_command->remove((*i)->note());
 898                 }
 899         }
 900
 901         _selection.clear();
 902 }
 903
 904 void
 905 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
 906 {
 907         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 908                 if ((*i)->selected() && (*i) != ev) {
 909                         (*i)->selected(false);
 910                 }
 911         }
 912
 913         _selection.clear();
 914 }
 915
 916 void
 917 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
 918 {
 919         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 920                 if ((*i) != ev) {
 921                         (*i)->selected(false);
 922                 }
 923         }
 924
 925         _selection.clear();
 926         _selection.insert(ev);
 927
 928         if ( ! ev->selected()) {
 929                 ev->selected(true);
 930         }
 931 }
 932
 933 void
 934 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 935 {
 936         if ( ! add) {
 937                 clear_selection_except(ev);
 938         }
 939
 940         _selection.insert(ev);
 941
 942         if ( ! ev->selected()) {
 943                 ev->selected(true);
 944         }
 945 }
 946
 947
 948 void
 949 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 950 {
 951         if ( ! add) {
 952                 clear_selection_except(ev);
 953         }
 954
 955         _selection.erase(ev);
 956
 957         if (ev->selected()) {
 958                 ev->selected(false);
 959         }
 960 }
 961
 962
 963 void
 964 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 965 {
 966         const double last_y = std::min(y1, y2);
 967         const double y      = std::max(y1, y2);
 968
 969         // TODO: Make this faster by storing the last updated selection rect, and only
 970         // adjusting things that are in the area that appears/disappeared.
 971         // We probably need a tree to be able to find events in O(log(n)) time.
 972
 973 #ifndef NDEBUG
 974         double last_x1 = 0.0;
 975 #endif
 976
 977         if (x1 < x2) {
 978                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 979 #ifndef NDEBUG
 980                         // Events should always be sorted by increasing x1() here
 981                         assert((*i)->x1() >= last_x1);
 982                         last_x1 = (*i)->x1();
 983 #endif
 984                         // Inside rectangle
 985                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 986                                 if (!(*i)->selected()) {
 987                                         (*i)->selected(true);
 988                                         _selection.insert(*i);
 989                                 }
 990                         // Not inside rectangle
 991                         } else if ((*i)->selected()) {
 992                                 (*i)->selected(false);
 993                                 _selection.erase(*i);
 994                         }
 995                 }
 996         } else {
 997                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 998 #ifndef NDEBUG
 999                         // Events should always be sorted by increasing x1() here
1000                         assert((*i)->x1() >= last_x1);
1001                         last_x1 = (*i)->x1();
1002 #endif
1003                         // Inside rectangle
1004                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1005                                 if (!(*i)->selected()) {
1006                                         (*i)->selected(true);
1007                                         _selection.insert(*i);
1008                                 }
1009                         // Not inside rectangle
1010                         } else if ((*i)->selected()) {
1011                                 (*i)->selected(false);
1012                                 _selection.erase(*i);
1013                         }
1014                 }
1015         }
1016 }
1017
1018
1019 void
1020 MidiRegionView::move_selection(double dx, double dy)
1021 {
1022         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1023                 (*i)->move_event(dx, dy);
1024 }
1025
1026
1027 void
1028 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1029 {
1030         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1031         if (_selection.find(ev) != _selection.end()) {
1032                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1033                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1034                 uint8_t highest_note_difference = 0;
1035
1036                 // find highest and lowest notes first
1037                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1038                         uint8_t pitch = (*i)->note()->note();
1039                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1040                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1041                 }
1042
1043                 /*
1044                 cerr << "dnote: " << (int) dnote << endl;
1045                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1046                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1047                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1048                      << int(highest_note_in_selection) << endl;
1049                 cerr << "selection size: " << _selection.size() << endl;
1050                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1051                 */
1052
1053                 // Make sure the note pitch does not exceed the MIDI standard range
1054                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1055                         highest_note_difference = highest_note_in_selection - 127;
1056                 }
1057
1058                 start_delta_command(_("move notes"));
1059
1060                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1061                         Selection::iterator next = i;
1062                         ++next;
1063
1064                         const boost::shared_ptr<Note> copy(new Note(*(*i)->note().get()));
1065
1066                         // we need to snap here again in nframes64_t in order to be sample accurate
1067                         double new_note_time = (*i)->note()->time();
1068                         new_note_time +=  dt;
1069
1070                         // keep notes inside region if dragged beyond left region bound
1071                         if (new_note_time < _region->start()) {
1072                                 new_note_time = _region->start();
1073                         }
1074
1075                         // since note time is region-absolute but snap_to_frame expects position-relative
1076                         // time we have to coordinate transform back and forth here.
1077                         new_note_time = snap_to_frame(nframes64_t(new_note_time) - _region->start()) + _region->start();
1078
1079                         copy->set_time(new_note_time);
1080
1081                         uint8_t original_pitch = (*i)->note()->note();
1082                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
1083
1084                         // keep notes in standard midi range
1085                         clamp_0_to_127(new_pitch);
1086
1087                         //notes which are dragged beyond the standard midi range snap back to their original place
1088                         if ((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
1089                                 new_pitch = original_pitch;
1090                         }
1091
1092                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1093                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1094
1095                         copy->set_note(new_pitch);
1096
1097                         command_remove_note(*i);
1098                         command_add_note(copy, true);
1099
1100                         i = next;
1101                 }
1102
1103                 apply_command();
1104
1105                 // care about notes being moved beyond the upper/lower bounds on the canvas
1106                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1107                    highest_note_in_selection > midi_stream_view()->highest_note()) {
1108                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1109                 }
1110         }
1111 }
1112
1113 nframes64_t
1114 MidiRegionView::snap_to_frame(double x)
1115 {
1116         PublicEditor &editor = trackview.editor;
1117         // x is region relative
1118         // convert x to global frame
1119         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1120         editor.snap_to(frame);
1121         // convert event_frame back to local coordinates relative to position
1122         frame -= _region->position();
1123         return frame;
1124 }
1125
1126 nframes64_t
1127 MidiRegionView::snap_to_frame(nframes64_t x)
1128 {
1129         PublicEditor &editor = trackview.editor;
1130         // x is region relative
1131         // convert x to global frame
1132         nframes64_t frame = x + _region->position();
1133         editor.snap_to(frame);
1134         // convert event_frame back to local coordinates relative to position
1135         frame -= _region->position();
1136         return frame;
1137 }
1138
1139 double
1140 MidiRegionView::snap_to_pixel(double x)
1141 {
1142         return (double) trackview.editor.frame_to_pixel(snap_to_frame(x));
1143 }
1144
1145 double
1146 MidiRegionView::get_position_pixels(void)
1147 {
1148         nframes64_t  region_frame  = get_position();
1149         return trackview.editor.frame_to_pixel(region_frame);
1150 }
1151
1152 void
1153 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1154 {
1155         _resize_data.clear();
1156
1157         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1158                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1159
1160                 // only insert CanvasNotes into the map
1161                 if (note) {
1162                         NoteResizeData *resize_data = new NoteResizeData();
1163                         resize_data->canvas_note = note;
1164
1165                         // create a new SimpleRect from the note which will be the resize preview
1166                         SimpleRect *resize_rect =
1167                                 new SimpleRect(
1168                                                 *group,
1169                                                 note->x1(),
1170                                                 note->y1(),
1171                                                 note->x2(),
1172                                                 note->y2());
1173
1174                         // calculate the colors: get the color settings
1175                         uint32_t fill_color =
1176                                 UINT_RGBA_CHANGE_A(
1177                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(),
1178                                                 128);
1179
1180                         // make the resize preview notes more transparent and bright
1181                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1182
1183                         // calculate color based on note velocity
1184                         resize_rect->property_fill_color_rgba() =
1185                                 UINT_INTERPOLATE(
1186                                         note_fill_color(note->note()->velocity()),
1187                                         fill_color,
1188                                         0.85);
1189
1190                         resize_rect->property_outline_color_rgba() =
1191                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
1192
1193                         resize_data->resize_rect = resize_rect;
1194
1195                         if (note_end == CanvasNote::NOTE_ON) {
1196                                 resize_data->current_x = note->x1();
1197                         } else { // NOTE_OFF
1198                                 resize_data->current_x = note->x2();
1199                         }
1200
1201                         _resize_data.push_back(resize_data);
1202                 }
1203         }
1204 }
1205
1206 void
1207 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1208 {
1209         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1210                 SimpleRect     *resize_rect = (*i)->resize_rect;
1211                 CanvasNote     *canvas_note = (*i)->canvas_note;
1212
1213                 const double region_start = get_position_pixels();
1214
1215                 if (relative) {
1216                         (*i)->current_x = (*i)->current_x + x;
1217                 } else {
1218                         // x is in track relative, transform it to region relative
1219                         (*i)->current_x = x - region_start;
1220                 }
1221
1222                 double current_x = (*i)->current_x;
1223
1224                 if (note_end == CanvasNote::NOTE_ON) {
1225                         resize_rect->property_x1() = snap_to_pixel(current_x);
1226                         resize_rect->property_x2() = canvas_note->x2();
1227                 } else {
1228                         resize_rect->property_x2() = snap_to_pixel(current_x);
1229                         resize_rect->property_x1() = canvas_note->x1();
1230                 }
1231         }
1232 }
1233
1234 void
1235 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1236 {
1237         start_delta_command(_("resize notes"));
1238
1239         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1240                 CanvasNote*  canvas_note = (*i)->canvas_note;
1241                 SimpleRect*  resize_rect = (*i)->resize_rect;
1242                 double       current_x   = (*i)->current_x;
1243                 const double position    = get_position_pixels();
1244
1245                 if (!relative) {
1246                         // event_x is in track relative, transform it to region relative
1247                         current_x = event_x - position;
1248                 }
1249
1250                 // because snapping works on world coordinates we have to transform current_x
1251                 // to world coordinates before snapping and transform it back afterwards
1252                 nframes64_t current_frame = snap_to_frame(current_x);
1253                 // transform to region start relative
1254                 current_frame += _region->start();
1255
1256                 const boost::shared_ptr<Note> copy(new Note(*(canvas_note->note().get())));
1257
1258                 // resize beginning of note
1259                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1260                         command_remove_note(canvas_note);
1261                         copy->on_event().time() = current_frame;
1262                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1263                 }
1264                 // resize end of note
1265                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1266                         command_remove_note(canvas_note);
1267                         copy->off_event().time() = current_frame;
1268                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1269                 }
1270
1271                 delete resize_rect;
1272                 delete (*i);
1273         }
1274
1275         _resize_data.clear();
1276         apply_command();
1277 }
1278
1279
1280 void
1281 MidiRegionView::change_velocity(uint8_t velocity, bool relative)
1282 {
1283         start_delta_command(_("change velocity"));
1284         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1285                 Selection::iterator next = i;
1286                 ++next;
1287
1288                 CanvasNoteEvent *event = *i;
1289                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1290
1291                 if (relative) {
1292                         uint8_t new_velocity = copy->velocity() + velocity;
1293                         clamp_0_to_127(new_velocity);
1294
1295                         copy->set_velocity(new_velocity);
1296                 } else { // absolute
1297                         copy->set_velocity(velocity);
1298                 }
1299
1300                 command_remove_note(event);
1301                 command_add_note(copy, true);
1302
1303                 i = next;
1304         }
1305
1306         apply_command();
1307 }
1308
1309 void
1310 MidiRegionView::change_channel(uint8_t channel)
1311 {
1312         start_delta_command(_("change channel"));
1313         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1314                 Selection::iterator next = i;
1315                 ++next;
1316
1317                 CanvasNoteEvent *event = *i;
1318                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1319
1320                 copy->set_channel(channel);
1321
1322                 command_remove_note(event);
1323                 command_add_note(copy, true);
1324
1325                 i = next;
1326         }
1327
1328         apply_command();
1329 }
1330
1331
1332 void
1333 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1334 {
1335         if (ev->note() && _mouse_state == EraseTouchDragging) {
1336                 start_delta_command(_("note entered"));
1337                 ev->selected(true);
1338                 _delta_command->remove(ev->note());
1339         } else if (_mouse_state == SelectTouchDragging) {
1340                 note_selected(ev, true);
1341         }
1342 }
1343
1344
1345 void
1346 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1347 {
1348         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1349         if (msrc)
1350                 display_model(msrc->model());
1351 }
1352
1353 void
1354 MidiRegionView::set_frame_color()
1355 {
1356         if (frame) {
1357                 if (_selected && should_show_selection) {
1358                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1359                 } else {
1360                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1361                 }
1362         }
1363 }
1364
1365 void
1366 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1367 {
1368         switch (mode) {
1369         case AllChannels:
1370         case FilterChannels:
1371                 _force_channel = -1;
1372                 break;
1373         case ForceChannel:
1374                 _force_channel = mask;
1375                 mask = 0xFFFF; // Show all notes as active (below)
1376         };
1377
1378         // Update notes for selection
1379         for (std::vector<ArdourCanvas::CanvasNoteEvent*>::iterator i = _events.begin();
1380                         i != _events.end(); ++i) {
1381                 (*i)->on_channel_selection_change(mask);
1382         }
1383
1384         _last_channel_selection = mask;
1385 }
1386