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