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_events.h>
  36 #include <ardour/midi_model.h>
  37
  38 #include "streamview.h"
  39 #include "midi_region_view.h"
  40 #include "midi_streamview.h"
  41 #include "midi_time_axis.h"
  42 #include "simplerect.h"
  43 #include "simpleline.h"
  44 #include "canvas-hit.h"
  45 #include "public_editor.h"
  46 #include "ghostregion.h"
  47 #include "midi_time_axis.h"
  48 #include "utils.h"
  49 #include "midi_util.h"
  50 #include "gui_thread.h"
  51 #include "keyboard.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59 using namespace ArdourCanvas;
  60
  61 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  62                                   Gdk::Color& basic_color)
  63         : RegionView (parent, tv, r, spu, basic_color)
  64         , _default_note_length(0.0)
  65         , _active_notes(0)
  66         , _note_group(new ArdourCanvas::Group(*parent))
  67         , _delta_command(NULL)
  68         , _mouse_state(None)
  69         , _pressed_button(0)
  70 {
  71         _note_group->raise_to_top();
  72 }
  73
  74 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  75                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  76         : RegionView (parent, tv, r, spu, basic_color, visibility)
  77         , _default_note_length(0.0)
  78         , _active_notes(0)
  79         , _note_group(new ArdourCanvas::Group(*parent))
  80         , _delta_command(NULL)
  81         , _mouse_state(None)
  82         , _pressed_button(0)
  83 {
  84         _note_group->raise_to_top();
  85 }
  86
  87 void
  88 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  89 {
  90         if (wfd)
  91                 midi_region()->midi_source(0)->load_model();
  92
  93         const Meter& m = trackview.session().tempo_map().meter_at(_region->start());
  94         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->start());
  95         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
  96                         / m.beats_per_bar();
  97
  98         _model = midi_region()->midi_source(0)->model();
  99         _enable_display = false;
 100
 101         RegionView::init(basic_color, false);
 102
 103         compute_colors (basic_color);
 104
 105         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 106
 107         set_y_position_and_height (0, trackview.height);
 108
 109         region_muted ();
 110         region_resized (BoundsChanged);
 111         region_locked ();
 112
 113         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 114
 115         set_colors ();
 116
 117         _enable_display = true;
 118
 119         if (_model) {
 120                 if (wfd) {
 121                         redisplay_model();
 122                 }
 123                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 124         }
 125
 126         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 127
 128 }
 129
 130 bool
 131 MidiRegionView::canvas_event(GdkEvent* ev)
 132 {
 133         static bool delete_mod = false;
 134         static Editing::MidiEditMode original_mode;
 135
 136         static double drag_start_x, drag_start_y;
 137         static double last_x, last_y;
 138         double event_x, event_y;
 139         nframes_t event_frame = 0;
 140
 141         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 142
 143         if (trackview.editor.current_mouse_mode() != MouseNote)
 144                 return false;
 145
 146         // Mmmm, spaghetti
 147
 148         switch (ev->type) {
 149         case GDK_KEY_PRESS:
 150                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 151                         delete_mod = true;
 152                         original_mode = trackview.editor.current_midi_edit_mode();
 153                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 154                         start_remove_command();
 155                         _mouse_state = EraseDragging;
 156                 }
 157                 break;
 158
 159         case GDK_KEY_RELEASE:
 160                 if (ev->key.keyval == GDK_Delete) {
 161                         if (_mouse_state == EraseDragging) {
 162                                 delete_selection();
 163                                 apply_command();
 164                         }
 165                         if (delete_mod) {
 166                                 trackview.editor.set_midi_edit_mode(original_mode);
 167                                 delete_mod = false;
 168                         }
 169                 }
 170                 break;
 171
 172         case GDK_BUTTON_PRESS:
 173                 //group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
 174                 _mouse_state = Pressed;
 175                 _pressed_button = ev->button.button;
 176                 //cerr << "PRESSED: " << press_button << endl;
 177                 return true;
 178
 179         case GDK_ENTER_NOTIFY:
 180                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 181                 Keyboard::magic_widget_grab_focus();
 182                 group->grab_focus();
 183                 break;
 184
 185         case GDK_MOTION_NOTIFY:
 186                 event_x = ev->motion.x;
 187                 event_y = ev->motion.y;
 188                 group->w2i(event_x, event_y);
 189
 190                 event_frame = trackview.editor.pixel_to_frame(event_x);
 191                 trackview.editor.snap_to(event_frame);
 192
 193                 switch (_mouse_state) {
 194                 case Pressed: // Drag start
 195
 196                         // Select rect start
 197                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 198                                 cerr << "SELECT START\n";
 199                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 200                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 201                                 last_x = event_x;
 202                                 last_y = event_y;
 203                                 drag_start_x = event_x;
 204                                 drag_start_y = event_y;
 205
 206                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 207                                 drag_rect->property_x1() = event_x;
 208                                 drag_rect->property_y1() = event_y;
 209                                 drag_rect->property_x2() = event_x;
 210                                 drag_rect->property_y2() = event_y;
 211                                 drag_rect->property_outline_what() = 0xFF;
 212                                 drag_rect->property_outline_color_rgba()
 213                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 214                                 drag_rect->property_fill_color_rgba()
 215                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 216
 217                                 _mouse_state = SelectDragging;
 218                                 return true;
 219
 220                         // Add note drag start
 221                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 222                                 cerr << "PENCIL START\n";
 223                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 224                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 225                                 last_x = event_x;
 226                                 last_y = event_y;
 227                                 drag_start_x = event_x;
 228                                 drag_start_y = event_y;
 229
 230                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 231                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 232
 233                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 234                                 drag_rect->property_x2() = event_x;
 235                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 236                                 drag_rect->property_outline_what() = 0xFF;
 237                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 238
 239                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 240
 241                                 _mouse_state = AddDragging;
 242                                 return true;
 243
 244                         // Eraser drag start
 245                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditErase) {
 246                                 cerr << "ERASE DRAGGING\n";
 247                                 _mouse_state = EraseDragging;
 248                                 return false; // ?
 249                         }
 250
 251                         break;
 252
 253                 case SelectDragging: // Select rect motion
 254                 case AddDragging: // Add note rect motion
 255                         if (ev->motion.is_hint) {
 256                                 int t_x;
 257                                 int t_y;
 258                                 GdkModifierType state;
 259                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 260                                 event_x = t_x;
 261                                 event_y = t_y;
 262                         }
 263
 264                         if (_mouse_state == AddDragging)
 265                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 266
 267                         if (drag_rect)
 268                                 drag_rect->property_x2() = event_x;
 269
 270                         if (drag_rect && _mouse_state == SelectDragging) {
 271                                 drag_rect->property_y2() = event_y;
 272
 273                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 274                         }
 275
 276                         last_x = event_x;
 277                         last_y = event_y;
 278
 279                 case EraseDragging:
 280                         return true;
 281
 282                 default:
 283                         _mouse_state = None;
 284                         break;
 285                 }
 286                 break;
 287
 288         case GDK_BUTTON_RELEASE:
 289                 event_x = ev->motion.x;
 290                 event_y = ev->motion.y;
 291                 group->w2i(event_x, event_y);
 292                 group->ungrab(ev->button.time);
 293                 event_frame = trackview.editor.pixel_to_frame(event_x);
 294
 295                 switch (_mouse_state) {
 296                 case Pressed: // Clicked
 297                         switch (trackview.editor.current_midi_edit_mode()) {
 298                         case MidiEditSelect:
 299                                 clear_selection();
 300                                 break;
 301                         case MidiEditPencil:
 302                                 trackview.editor.snap_to(event_frame);
 303                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 304                                 create_note_at(event_x, event_y, _default_note_length);
 305                         default:
 306                                 break;
 307                         }
 308                         _mouse_state = None;
 309                         return true;
 310                 case SelectDragging: // Select drag done
 311                         _mouse_state = None;
 312                         delete drag_rect;
 313                         drag_rect = NULL;
 314                         return true;
 315                 case AddDragging: // Add drag done
 316                         _mouse_state = None;
 317                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 318                                 create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
 319                                                 trackview.editor.pixel_to_frame(
 320                                                 drag_rect->property_x2() - drag_rect->property_x1()));
 321                         }
 322
 323                         delete drag_rect;
 324                         drag_rect = NULL;
 325                         return true;
 326                 default:
 327                         break;
 328                 }
 329
 330         default:
 331                 break;
 332         }
 333
 334         return false;
 335 }
 336
 337
 338 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 339 void
 340 MidiRegionView::create_note_at(double x, double y, double dur)
 341 {
 342         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 343         MidiStreamView* const view = mtv->midi_view();
 344
 345         double note = midi_stream_view()->y_to_note(y);
 346
 347         assert(note >= 0.0);
 348         assert(note <= 127.0);
 349
 350         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 351         assert(stamp >= 0);
 352         //assert(stamp <= _region->length());
 353
 354         //const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 355         //const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 356         //double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 357
 358         // Add a 1 beat long note (for now)
 359         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 360
 361         view->update_bounds(new_note.note());
 362
 363         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 364         cmd->add(new_note);
 365         _model->apply_command(cmd);
 366
 367         //add_note(new_note);
 368 }
 369
 370
 371 void
 372 MidiRegionView::clear_events()
 373 {
 374         for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 375                 delete *i;
 376
 377         _events.clear();
 378 }
 379
 380
 381 void
 382 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 383 {
 384         _model = model;
 385
 386         if (_enable_display)
 387                 redisplay_model();
 388 }
 389
 390
 391 void
 392 MidiRegionView::redisplay_model()
 393 {
 394         clear_events();
 395
 396         if (_model) {
 397                 begin_write();
 398
 399                 for (size_t i=0; i < _model->n_notes(); ++i)
 400                         add_note(_model->note_at(i));
 401
 402                 end_write();
 403         } else {
 404                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 405         }
 406 }
 407
 408
 409 MidiRegionView::~MidiRegionView ()
 410 {
 411         in_destructor = true;
 412         end_write();
 413
 414         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 415 }
 416
 417
 418 void
 419 MidiRegionView::region_resized (Change what_changed)
 420 {
 421         RegionView::region_resized(what_changed);
 422
 423         if (what_changed & ARDOUR::PositionChanged) {
 424
 425                 if (_enable_display)
 426                         redisplay_model();
 427
 428         } else if (what_changed & Change (StartChanged)) {
 429
 430                 //cerr << "MIDI RV START CHANGED" << endl;
 431
 432         } else if (what_changed & Change (LengthChanged)) {
 433
 434                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 435
 436         }
 437 }
 438
 439 void
 440 MidiRegionView::reset_width_dependent_items (double pixel_width)
 441 {
 442         RegionView::reset_width_dependent_items(pixel_width);
 443         assert(_pixel_width == pixel_width);
 444
 445         if (_enable_display)
 446                 redisplay_model();
 447 }
 448
 449 void
 450 MidiRegionView::set_y_position_and_height (double y, double h)
 451 {
 452         RegionView::set_y_position_and_height(y, h - 1);
 453
 454         if (_enable_display)
 455                 redisplay_model();
 456
 457         if (name_text) {
 458                 name_text->raise_to_top();
 459         }
 460 }
 461
 462 GhostRegion*
 463 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 464 {
 465         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 466         assert(rtv);
 467
 468         double unit_position = _region->position () / samples_per_unit;
 469         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 470
 471         ghost->set_height ();
 472         ghost->set_duration (_region->length() / samples_per_unit);
 473         ghosts.push_back (ghost);
 474
 475         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 476
 477         return ghost;
 478 }
 479
 480
 481 /** Begin tracking note state for successive calls to add_event
 482  */
 483 void
 484 MidiRegionView::begin_write()
 485 {
 486         _active_notes = new CanvasNote*[128];
 487         for (unsigned i=0; i < 128; ++i)
 488                 _active_notes[i] = NULL;
 489 }
 490
 491
 492 /** Destroy note state for add_event
 493  */
 494 void
 495 MidiRegionView::end_write()
 496 {
 497         delete[] _active_notes;
 498         _active_notes = NULL;
 499 }
 500
 501
 502 /** Add a MIDI event.
 503  *
 504  * This is used while recording, and handles displaying still-unresolved notes.
 505  * Displaying an existing model is simpler, and done with add_note.
 506  */
 507 void
 508 MidiRegionView::add_event (const MidiEvent& ev)
 509 {
 510         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 511         for (size_t i=0; i < ev.size; ++i) {
 512                 printf("%X ", ev.buffer[i]);
 513         }
 514         printf("\n\n");*/
 515
 516         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 517         ArdourCanvas::Group* const group = _note_group;
 518
 519         if (midi_view()->note_mode() == Sustained) {
 520                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 521                         const Byte& note = ev.buffer()[1];
 522                         const double y1 = midi_stream_view()->note_to_y(note);
 523
 524                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 525                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 526                                         (nframes_t)ev.time());
 527                         ev_rect->property_y1() = y1;
 528                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 529                                         _region->length());
 530                         ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 531                         ev_rect->property_fill_color_rgba() = note_fill_color(ev.velocity());
 532                         ev_rect->property_outline_color_rgba() = note_outline_color(ev.velocity());
 533                         /* outline all but right edge */
 534                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 535
 536                         ev_rect->raise_to_top();
 537
 538                         _events.push_back(ev_rect);
 539                         if (_active_notes)
 540                                 _active_notes[note] = ev_rect;
 541
 542                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 543                         const Byte& note = ev.buffer()[1];
 544                         if (_active_notes && _active_notes[note]) {
 545                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 546                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 547                                 _active_notes[note] = NULL;
 548                         }
 549                 }
 550
 551         } else if (midi_view()->note_mode() == Percussive) {
 552                 const Byte& note = ev.buffer()[1];
 553                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 554                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 555                 const double y = midi_stream_view()->note_to_y(note) + ((diamond_size-2) / 4.0);
 556
 557                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 558                 ev_diamond->move(x, y);
 559                 ev_diamond->show();
 560                 ev_diamond->property_fill_color_rgba() = note_fill_color(ev.velocity());
 561                 ev_diamond->property_outline_color_rgba() = note_outline_color(ev.velocity());
 562
 563                 _events.push_back(ev_diamond);
 564         }
 565 }
 566
 567
 568 /** Extend active notes to rightmost edge of region (if length is changed)
 569  */
 570 void
 571 MidiRegionView::extend_active_notes()
 572 {
 573         if (!_active_notes)
 574                 return;
 575
 576         for (unsigned i=0; i < 128; ++i)
 577                 if (_active_notes[i])
 578                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 579 }
 580
 581
 582 /** Add a MIDI note to the view (with duration).
 583  *
 584  * This does no 'realtime' note resolution, notes from a MidiModel have a
 585  * duration so they can be drawn in full immediately.
 586  */
 587 void
 588 MidiRegionView::add_note (const MidiModel::Note& note)
 589 {
 590         assert(note.time() >= 0);
 591         //assert(note.time() < _region->length());
 592
 593         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 594
 595         if (midi_view()->note_mode() == Sustained) {
 596                 const double y1 = midi_stream_view()->note_to_y(note.note());
 597
 598                 CanvasNote* ev_rect = new CanvasNote(*this, *group, &note);
 599                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 600                 ev_rect->property_y1() = y1;
 601                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 602                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 603
 604                 ev_rect->property_fill_color_rgba() = note_fill_color(note.velocity());
 605                 ev_rect->property_outline_color_rgba() = note_outline_color(note.velocity());
 606                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 607
 608                 ev_rect->show();
 609                 _events.push_back(ev_rect);
 610
 611         } else if (midi_view()->note_mode() == Percussive) {
 612                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 613                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 614                 const double y = midi_stream_view()->note_to_y(note.note()) + ((diamond_size-2) / 4.0);
 615
 616                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 617                 ev_diamond->move(x, y);
 618                 ev_diamond->show();
 619                 ev_diamond->property_fill_color_rgba() = note_fill_color(note.velocity());
 620                 ev_diamond->property_outline_color_rgba() = note_outline_color(note.velocity());
 621                 _events.push_back(ev_diamond);
 622         }
 623 }
 624
 625 void
 626 MidiRegionView::delete_selection()
 627 {
 628         assert(_delta_command);
 629
 630         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 631                 if ((*i)->selected())
 632                         _delta_command->remove(*(*i)->note());
 633
 634         _selection.clear();
 635 }
 636
 637 void
 638 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev)
 639 {
 640         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 641                 if ((*i)->selected() && (*i) != ev)
 642                         (*i)->selected(false);
 643
 644         _selection.clear();
 645 }
 646
 647 void
 648 MidiRegionView::unique_select(ArdourCanvas::CanvasMidiEvent* ev)
 649 {
 650         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 651                 if ((*i) != ev)
 652                         (*i)->selected(false);
 653
 654         _selection.clear();
 655         _selection.insert(ev);
 656         ev->selected(true);
 657 }
 658
 659 void
 660 MidiRegionView::note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 661 {
 662         if ( ! add)
 663                 clear_selection_except(ev);
 664
 665         _selection.insert(ev);
 666         ev->selected(true);
 667 }
 668
 669
 670 void
 671 MidiRegionView::note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 672 {
 673         if ( ! add)
 674                 clear_selection_except(ev);
 675
 676         _selection.erase(ev);
 677         ev->selected(false);
 678 }
 679
 680
 681 void
 682 MidiRegionView::update_drag_selection(double last_x, double x, double last_y, double y)
 683 {
 684         // FIXME: so, so, so much slower than this should be
 685         for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 686                 if ((*i)->x1() >= last_x && (*i)->x1() <= x && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 687                         (*i)->selected(true);
 688                         _selection.insert(*i);
 689                 } else {
 690                         (*i)->selected(false);
 691                         _selection.erase(*i);
 692                 }
 693         }
 694 }
 695
 696
 697 void
 698 MidiRegionView::move_selection(double dx, double dy)
 699 {
 700         cerr << "MOVE SELECTION: " << dx << ", " << dy << endl;
 701         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 702                 (*i)->item()->move(dx, dy);
 703 }
 704
 705 void
 706 MidiRegionView::note_dropped(CanvasMidiEvent* ev, double dt, uint8_t dnote)
 707 {
 708         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
 709         if (_selection.find(ev) != _selection.end()) {
 710                 start_delta_command();
 711
 712                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 713                         command_remove_note(*i);
 714                         MidiModel::Note copy(*(*i)->note());
 715
 716                         copy.set_time((*i)->note()->time() + dt);
 717                         copy.set_note((*i)->note()->note() + dnote);
 718
 719                         command_add_note(copy);
 720                 }
 721                 apply_command();
 722         }
 723 }
 724