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 = EraseTouchDragging;
 156                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 157                         _mouse_state = SelectTouchDragging;
 158                 }
 159                 return true;
 160
 161         case GDK_KEY_RELEASE:
 162                 if (ev->key.keyval == GDK_Delete) {
 163                         if (_mouse_state == EraseTouchDragging) {
 164                                 delete_selection();
 165                                 apply_command();
 166                         }
 167                         if (delete_mod) {
 168                                 trackview.editor.set_midi_edit_mode(original_mode);
 169                                 delete_mod = false;
 170                         }
 171                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 172                         _mouse_state = None;
 173                 }
 174                 return true;
 175
 176         case GDK_BUTTON_PRESS:
 177                 if (_mouse_state != SelectTouchDragging && _mouse_state != EraseTouchDragging)
 178                         _mouse_state = Pressed;
 179                 _pressed_button = ev->button.button;
 180                 return true;
 181
 182         case GDK_ENTER_NOTIFY:
 183                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 184                 Keyboard::magic_widget_grab_focus();
 185                 group->grab_focus();
 186                 break;
 187
 188         case GDK_MOTION_NOTIFY:
 189                 event_x = ev->motion.x;
 190                 event_y = ev->motion.y;
 191                 group->w2i(event_x, event_y);
 192
 193                 event_frame = trackview.editor.pixel_to_frame(event_x);
 194                 trackview.editor.snap_to(event_frame);
 195
 196                 switch (_mouse_state) {
 197                 case Pressed: // Drag start
 198
 199                         // Select drag start
 200                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 201                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 202                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 203                                 last_x = event_x;
 204                                 last_y = event_y;
 205                                 drag_start_x = event_x;
 206                                 drag_start_y = event_y;
 207
 208                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 209                                 drag_rect->property_x1() = event_x;
 210                                 drag_rect->property_y1() = event_y;
 211                                 drag_rect->property_x2() = event_x;
 212                                 drag_rect->property_y2() = event_y;
 213                                 drag_rect->property_outline_what() = 0xFF;
 214                                 drag_rect->property_outline_color_rgba()
 215                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 216                                 drag_rect->property_fill_color_rgba()
 217                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 218
 219                                 _mouse_state = SelectRectDragging;
 220                                 return true;
 221
 222                         // Add note drag start
 223                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 224                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 225                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 226                                 last_x = event_x;
 227                                 last_y = event_y;
 228                                 drag_start_x = event_x;
 229                                 drag_start_y = event_y;
 230
 231                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 232                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 233
 234                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 235                                 drag_rect->property_x2() = event_x;
 236                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 237                                 drag_rect->property_outline_what() = 0xFF;
 238                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 239
 240                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 241
 242                                 _mouse_state = AddDragging;
 243                                 return true;
 244                         }
 245
 246                         return false;
 247
 248                 case SelectRectDragging: // Select drag motion
 249                 case AddDragging: // Add note drag motion
 250                         if (ev->motion.is_hint) {
 251                                 int t_x;
 252                                 int t_y;
 253                                 GdkModifierType state;
 254                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 255                                 event_x = t_x;
 256                                 event_y = t_y;
 257                         }
 258
 259                         if (_mouse_state == AddDragging)
 260                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 261
 262                         if (drag_rect)
 263                                 if (event_x > drag_start_x)
 264                                         drag_rect->property_x2() = event_x;
 265                                 else
 266                                         drag_rect->property_x1() = event_x;
 267
 268                         if (drag_rect && _mouse_state == SelectRectDragging) {
 269                                 if (event_y > drag_start_y)
 270                                         drag_rect->property_y2() = event_y;
 271                                 else
 272                                         drag_rect->property_y1() = event_y;
 273
 274                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 275                         }
 276
 277                         last_x = event_x;
 278                         last_y = event_y;
 279
 280                 case EraseTouchDragging:
 281                 case SelectTouchDragging:
 282                         return false;
 283
 284                 default:
 285                         break;
 286                 }
 287                 break;
 288
 289         case GDK_BUTTON_RELEASE:
 290                 event_x = ev->motion.x;
 291                 event_y = ev->motion.y;
 292                 group->w2i(event_x, event_y);
 293                 group->ungrab(ev->button.time);
 294                 event_frame = trackview.editor.pixel_to_frame(event_x);
 295
 296                 switch (_mouse_state) {
 297                 case Pressed: // Clicked
 298                         switch (trackview.editor.current_midi_edit_mode()) {
 299                         case MidiEditSelect:
 300                                 clear_selection();
 301                                 break;
 302                         case MidiEditPencil:
 303                                 trackview.editor.snap_to(event_frame);
 304                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 305                                 create_note_at(event_x, event_y, _default_note_length);
 306                         default:
 307                                 break;
 308                         }
 309                         _mouse_state = None;
 310                         return true;
 311                 case SelectRectDragging: // Select drag done
 312                         _mouse_state = None;
 313                         delete drag_rect;
 314                         drag_rect = NULL;
 315                         return true;
 316                 case AddDragging: // Add drag done
 317                         _mouse_state = None;
 318                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 319                                 create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
 320                                                 trackview.editor.pixel_to_frame(
 321                                                 drag_rect->property_x2() - drag_rect->property_x1()));
 322                         }
 323
 324                         delete drag_rect;
 325                         drag_rect = NULL;
 326                         return true;
 327                 default:
 328                         break;
 329                 }
 330
 331         default:
 332                 break;
 333         }
 334
 335         return false;
 336 }
 337
 338
 339 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 340 void
 341 MidiRegionView::create_note_at(double x, double y, double dur)
 342 {
 343         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 344         MidiStreamView* const view = mtv->midi_view();
 345
 346         double note = midi_stream_view()->y_to_note(y);
 347
 348         assert(note >= 0.0);
 349         assert(note <= 127.0);
 350
 351         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 352         assert(stamp >= 0);
 353         //assert(stamp <= _region->length());
 354
 355         //const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 356         //const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 357         //double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 358
 359         // Add a 1 beat long note (for now)
 360         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 361
 362         view->update_bounds(new_note.note());
 363
 364         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 365         cmd->add(new_note);
 366         _model->apply_command(cmd);
 367
 368         //add_note(new_note);
 369 }
 370
 371
 372 void
 373 MidiRegionView::clear_events()
 374 {
 375         for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 376                 delete *i;
 377
 378         _events.clear();
 379 }
 380
 381
 382 void
 383 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 384 {
 385         _model = model;
 386
 387         if (_enable_display)
 388                 redisplay_model();
 389 }
 390
 391
 392 void
 393 MidiRegionView::redisplay_model()
 394 {
 395         clear_events();
 396
 397         if (_model) {
 398                 begin_write();
 399
 400                 for (size_t i=0; i < _model->n_notes(); ++i)
 401                         add_note(_model->note_at(i));
 402
 403                 end_write();
 404         } else {
 405                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 406         }
 407 }
 408
 409
 410 MidiRegionView::~MidiRegionView ()
 411 {
 412         in_destructor = true;
 413         end_write();
 414
 415         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 416 }
 417
 418
 419 void
 420 MidiRegionView::region_resized (Change what_changed)
 421 {
 422         RegionView::region_resized(what_changed);
 423
 424         if (what_changed & ARDOUR::PositionChanged) {
 425
 426                 if (_enable_display)
 427                         redisplay_model();
 428
 429         } else if (what_changed & Change (StartChanged)) {
 430
 431                 //cerr << "MIDI RV START CHANGED" << endl;
 432
 433         } else if (what_changed & Change (LengthChanged)) {
 434
 435                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 436
 437         }
 438 }
 439
 440 void
 441 MidiRegionView::reset_width_dependent_items (double pixel_width)
 442 {
 443         RegionView::reset_width_dependent_items(pixel_width);
 444         assert(_pixel_width == pixel_width);
 445
 446         if (_enable_display)
 447                 redisplay_model();
 448 }
 449
 450 void
 451 MidiRegionView::set_y_position_and_height (double y, double h)
 452 {
 453         RegionView::set_y_position_and_height(y, h - 1);
 454
 455         if (_enable_display)
 456                 redisplay_model();
 457
 458         if (name_text) {
 459                 name_text->raise_to_top();
 460         }
 461 }
 462
 463 GhostRegion*
 464 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 465 {
 466         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 467         assert(rtv);
 468
 469         double unit_position = _region->position () / samples_per_unit;
 470         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 471
 472         ghost->set_height ();
 473         ghost->set_duration (_region->length() / samples_per_unit);
 474         ghosts.push_back (ghost);
 475
 476         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 477
 478         return ghost;
 479 }
 480
 481
 482 /** Begin tracking note state for successive calls to add_event
 483  */
 484 void
 485 MidiRegionView::begin_write()
 486 {
 487         _active_notes = new CanvasNote*[128];
 488         for (unsigned i=0; i < 128; ++i)
 489                 _active_notes[i] = NULL;
 490 }
 491
 492
 493 /** Destroy note state for add_event
 494  */
 495 void
 496 MidiRegionView::end_write()
 497 {
 498         delete[] _active_notes;
 499         _active_notes = NULL;
 500 }
 501
 502
 503 /** Add a MIDI event.
 504  *
 505  * This is used while recording, and handles displaying still-unresolved notes.
 506  * Displaying an existing model is simpler, and done with add_note.
 507  */
 508 void
 509 MidiRegionView::add_event (const MidiEvent& ev)
 510 {
 511         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 512         for (size_t i=0; i < ev.size; ++i) {
 513                 printf("%X ", ev.buffer[i]);
 514         }
 515         printf("\n\n");*/
 516
 517         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 518         ArdourCanvas::Group* const group = _note_group;
 519
 520         if (midi_view()->note_mode() == Sustained) {
 521                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 522                         const Byte& note = ev.buffer()[1];
 523                         const double y1 = midi_stream_view()->note_to_y(note);
 524
 525                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 526                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 527                                         (nframes_t)ev.time());
 528                         ev_rect->property_y1() = y1;
 529                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 530                                         _region->length());
 531                         ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 532                         ev_rect->property_fill_color_rgba() = note_fill_color(ev.velocity());
 533                         ev_rect->property_outline_color_rgba() = note_outline_color(ev.velocity());
 534                         /* outline all but right edge */
 535                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 536
 537                         ev_rect->raise_to_top();
 538
 539                         _events.push_back(ev_rect);
 540                         if (_active_notes)
 541                                 _active_notes[note] = ev_rect;
 542
 543                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 544                         const Byte& note = ev.buffer()[1];
 545                         if (_active_notes && _active_notes[note]) {
 546                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 547                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 548                                 _active_notes[note] = NULL;
 549                         }
 550                 }
 551
 552         } else if (midi_view()->note_mode() == Percussive) {
 553                 const Byte& note = ev.buffer()[1];
 554                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 555                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 556                 const double y = midi_stream_view()->note_to_y(note) + ((diamond_size-2) / 4.0);
 557
 558                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 559                 ev_diamond->move(x, y);
 560                 ev_diamond->show();
 561                 ev_diamond->property_fill_color_rgba() = note_fill_color(ev.velocity());
 562                 ev_diamond->property_outline_color_rgba() = note_outline_color(ev.velocity());
 563
 564                 _events.push_back(ev_diamond);
 565         }
 566 }
 567
 568
 569 /** Extend active notes to rightmost edge of region (if length is changed)
 570  */
 571 void
 572 MidiRegionView::extend_active_notes()
 573 {
 574         if (!_active_notes)
 575                 return;
 576
 577         for (unsigned i=0; i < 128; ++i)
 578                 if (_active_notes[i])
 579                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 580 }
 581
 582
 583 /** Add a MIDI note to the view (with duration).
 584  *
 585  * This does no 'realtime' note resolution, notes from a MidiModel have a
 586  * duration so they can be drawn in full immediately.
 587  */
 588 void
 589 MidiRegionView::add_note (const MidiModel::Note& note)
 590 {
 591         assert(note.time() >= 0);
 592         //assert(note.time() < _region->length());
 593
 594         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 595
 596         if (midi_view()->note_mode() == Sustained) {
 597                 const double y1 = midi_stream_view()->note_to_y(note.note());
 598
 599                 CanvasNote* ev_rect = new CanvasNote(*this, *group, &note);
 600                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 601                 ev_rect->property_y1() = y1;
 602                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 603                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 604
 605                 ev_rect->property_fill_color_rgba() = note_fill_color(note.velocity());
 606                 ev_rect->property_outline_color_rgba() = note_outline_color(note.velocity());
 607                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 608
 609                 ev_rect->show();
 610                 _events.push_back(ev_rect);
 611
 612         } else if (midi_view()->note_mode() == Percussive) {
 613                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 614                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 615                 const double y = midi_stream_view()->note_to_y(note.note()) + ((diamond_size-2) / 4.0);
 616
 617                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 618                 ev_diamond->move(x, y);
 619                 ev_diamond->show();
 620                 ev_diamond->property_fill_color_rgba() = note_fill_color(note.velocity());
 621                 ev_diamond->property_outline_color_rgba() = note_outline_color(note.velocity());
 622                 _events.push_back(ev_diamond);
 623         }
 624 }
 625
 626 void
 627 MidiRegionView::delete_selection()
 628 {
 629         assert(_delta_command);
 630
 631         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 632                 if ((*i)->selected())
 633                         _delta_command->remove(*(*i)->note());
 634
 635         _selection.clear();
 636 }
 637
 638 void
 639 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev)
 640 {
 641         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 642                 if ((*i)->selected() && (*i) != ev)
 643                         (*i)->selected(false);
 644
 645         _selection.clear();
 646 }
 647
 648 void
 649 MidiRegionView::unique_select(ArdourCanvas::CanvasMidiEvent* ev)
 650 {
 651         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 652                 if ((*i) != ev)
 653                         (*i)->selected(false);
 654
 655         _selection.clear();
 656         _selection.insert(ev);
 657
 658         if ( ! ev->selected())
 659                 ev->selected(true);
 660 }
 661
 662 void
 663 MidiRegionView::note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 664 {
 665         if ( ! add)
 666                 clear_selection_except(ev);
 667
 668         _selection.insert(ev);
 669
 670         if ( ! ev->selected())
 671                 ev->selected(true);
 672 }
 673
 674
 675 void
 676 MidiRegionView::note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 677 {
 678         if ( ! add)
 679                 clear_selection_except(ev);
 680
 681         _selection.erase(ev);
 682
 683         if (ev->selected())
 684                 ev->selected(false);
 685 }
 686
 687
 688 void
 689 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 690 {
 691         const double last_y = std::min(y1, y2);
 692         const double y      = std::max(y1, y2);
 693
 694         // FIXME: so, so, so much slower than this should be
 695
 696         if (x1 < x2) {
 697                 for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 698                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 699                                 (*i)->selected(true);
 700                                 _selection.insert(*i);
 701                         } else {
 702                                 (*i)->selected(false);
 703                                 _selection.erase(*i);
 704                         }
 705                 }
 706         } else {
 707                 for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 708                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 709                                 (*i)->selected(true);
 710                                 _selection.insert(*i);
 711                         } else {
 712                                 (*i)->selected(false);
 713                                 _selection.erase(*i);
 714                         }
 715                 }
 716         }
 717 }
 718
 719
 720 void
 721 MidiRegionView::move_selection(double dx, double dy)
 722 {
 723         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 724                 (*i)->item()->move(dx, dy);
 725 }
 726
 727
 728 void
 729 MidiRegionView::note_dropped(CanvasMidiEvent* ev, double dt, uint8_t dnote)
 730 {
 731         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
 732         if (_selection.find(ev) != _selection.end()) {
 733                 start_delta_command();
 734
 735                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 736                         command_remove_note(*i);
 737                         MidiModel::Note copy(*(*i)->note());
 738
 739                         copy.set_time((*i)->note()->time() + dt);
 740                         copy.set_note((*i)->note()->note() + dnote);
 741
 742                         command_add_note(copy);
 743                 }
 744                 apply_command();
 745         }
 746 }
 747
 748
 749 void
 750 MidiRegionView::note_entered(ArdourCanvas::CanvasMidiEvent* ev)
 751 {
 752         cerr << "NOTE ENTERED: " << _mouse_state << endl;
 753         if (ev->note() && _mouse_state == EraseTouchDragging) {
 754                 start_delta_command();
 755                 ev->selected(true);
 756                 _delta_command->remove(*ev->note());
 757         } else if (_mouse_state == SelectTouchDragging) {
 758                 note_selected(ev, true);
 759         }
 760 }
 761