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         group->lower_to_bottom();
  75         _note_group->raise_to_top();
  76
  77         frame->property_fill_color_rgba() = 0xff000033;
  78 }
  79
  80 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  81         : RegionView (parent, tv, r, spu, basic_color, visibility)
  82         , force_channel(-1)
  83         , last_channel_selection(0xFFFF)
  84         , _default_note_length(0.0)
  85         , _active_notes(0)
  86         , _note_group(new ArdourCanvas::Group(*parent))
  87         , _delta_command(NULL)
  88         , _mouse_state(None)
  89         , _pressed_button(0)
  90
  91 {
  92         _note_group->raise_to_top();
  93 }
  94
  95 void
  96 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  97 {
  98         if (wfd)
  99                 midi_region()->midi_source(0)->load_model();
 100
 101         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
 102         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
 103         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
 104                         / m.beats_per_bar();
 105
 106         _model = midi_region()->midi_source(0)->model();
 107         _enable_display = false;
 108
 109         RegionView::init(basic_color, false);
 110
 111         compute_colors (basic_color);
 112
 113         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 114
 115         set_y_position_and_height (0, trackview.height);
 116
 117         region_muted ();
 118         region_resized (BoundsChanged);
 119         region_locked ();
 120
 121         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 122
 123         set_colors ();
 124
 125         _enable_display = true;
 126
 127         if (_model) {
 128                 if (wfd) {
 129                         redisplay_model();
 130                 }
 131                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 132         }
 133
 134         midi_region()->midi_source(0)->Switched.connect(sigc::mem_fun(this, &MidiRegionView::switch_source));
 135
 136         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 137
 138         midi_view()->signal_force_channel_changed().connect(
 139                         mem_fun(this, &MidiRegionView::midi_force_channel_changed));
 140         midi_view()->signal_channel_selection_changed().connect(
 141                         mem_fun(this, &MidiRegionView::midi_channel_selection_changed));
 142 }
 143
 144 bool
 145 MidiRegionView::canvas_event(GdkEvent* ev)
 146 {
 147         static bool delete_mod = false;
 148         static Editing::MidiEditMode original_mode;
 149
 150         static double drag_start_x, drag_start_y;
 151         static double last_x, last_y;
 152         double event_x, event_y;
 153         nframes_t event_frame = 0;
 154
 155         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 156
 157         if (trackview.editor.current_mouse_mode() != MouseNote)
 158                 return false;
 159
 160         // Mmmm, spaghetti
 161
 162         switch (ev->type) {
 163         case GDK_KEY_PRESS:
 164                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 165                         delete_mod = true;
 166                         original_mode = trackview.editor.current_midi_edit_mode();
 167                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 168                         start_delta_command(_("erase notes"));
 169                         _mouse_state = EraseTouchDragging;
 170                         return true;
 171                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 172                         _mouse_state = SelectTouchDragging;
 173                         return true;
 174                 } else if (ev->key.keyval == GDK_Escape) {
 175                         clear_selection();
 176                         _mouse_state = None;
 177                 }
 178                 return false;
 179
 180         case GDK_KEY_RELEASE:
 181                 if (ev->key.keyval == GDK_Delete) {
 182                         if (_mouse_state == EraseTouchDragging) {
 183                                 delete_selection();
 184                                 apply_command();
 185                         }
 186                         if (delete_mod) {
 187                                 trackview.editor.set_midi_edit_mode(original_mode);
 188                                 _mouse_state = None;
 189                                 delete_mod = false;
 190                         }
 191                         return true;
 192                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 193                         _mouse_state = None;
 194                         return true;
 195                 }
 196                 return false;
 197
 198         case GDK_BUTTON_PRESS:
 199                 if (_mouse_state != SelectTouchDragging &&
 200                         _mouse_state != EraseTouchDragging &&
 201                         ev->button.button == 1  ) {
 202                         _pressed_button = ev->button.button;
 203                         _mouse_state = Pressed;
 204                         return true;
 205                 }
 206                 _pressed_button = ev->button.button;
 207                 return false;
 208
 209         case GDK_ENTER_NOTIFY:
 210                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 211                 Keyboard::magic_widget_grab_focus();
 212                 group->grab_focus();
 213                 break;
 214
 215         case GDK_MOTION_NOTIFY:
 216                 event_x = ev->motion.x;
 217                 event_y = ev->motion.y;
 218                 group->w2i(event_x, event_y);
 219
 220                 // convert event_x to global frame
 221                 event_frame = trackview.editor.pixel_to_frame(event_x) + _region->position();
 222                 trackview.editor.snap_to(event_frame);
 223                 // convert event_frame back to local coordinates relative to position
 224                 event_frame -= _region->position();
 225
 226                 switch (_mouse_state) {
 227                 case Pressed: // Drag start
 228
 229                         // Select drag start
 230                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 231                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 232                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 233                                 last_x = event_x;
 234                                 last_y = event_y;
 235                                 drag_start_x = event_x;
 236                                 drag_start_y = event_y;
 237
 238                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 239                                 drag_rect->property_x1() = event_x;
 240                                 drag_rect->property_y1() = event_y;
 241                                 drag_rect->property_x2() = event_x;
 242                                 drag_rect->property_y2() = event_y;
 243                                 drag_rect->property_outline_what() = 0xFF;
 244                                 drag_rect->property_outline_color_rgba()
 245                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 246                                 drag_rect->property_fill_color_rgba()
 247                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 248
 249                                 _mouse_state = SelectRectDragging;
 250                                 return true;
 251
 252                         // Add note drag start
 253                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 254                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 255                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 256                                 last_x = event_x;
 257                                 last_y = event_y;
 258                                 drag_start_x = event_x;
 259                                 drag_start_y = event_y;
 260
 261                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 262                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 263
 264                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 265                                 drag_rect->property_x2() = event_x;
 266                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 267                                 drag_rect->property_outline_what() = 0xFF;
 268                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 269
 270                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 271
 272                                 _mouse_state = AddDragging;
 273                                 return true;
 274                         }
 275
 276                         return false;
 277
 278                 case SelectRectDragging: // Select drag motion
 279                 case AddDragging: // Add note drag motion
 280                         if (ev->motion.is_hint) {
 281                                 int t_x;
 282                                 int t_y;
 283                                 GdkModifierType state;
 284                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 285                                 event_x = t_x;
 286                                 event_y = t_y;
 287                         }
 288
 289                         if (_mouse_state == AddDragging)
 290                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 291
 292                         if (drag_rect) {
 293                                 if (event_x > drag_start_x)
 294                                         drag_rect->property_x2() = event_x;
 295                                 else
 296                                         drag_rect->property_x1() = event_x;
 297                         }
 298
 299                         if (drag_rect && _mouse_state == SelectRectDragging) {
 300                                 if (event_y > drag_start_y)
 301                                         drag_rect->property_y2() = event_y;
 302                                 else
 303                                         drag_rect->property_y1() = event_y;
 304
 305                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 306                         }
 307
 308                         last_x = event_x;
 309                         last_y = event_y;
 310
 311                 case EraseTouchDragging:
 312                 case SelectTouchDragging:
 313                         return false;
 314
 315                 default:
 316                         break;
 317                 }
 318                 break;
 319
 320         case GDK_BUTTON_RELEASE:
 321                 event_x = ev->motion.x;
 322                 event_y = ev->motion.y;
 323                 group->w2i(event_x, event_y);
 324                 group->ungrab(ev->button.time);
 325                 event_frame = trackview.editor.pixel_to_frame(event_x);
 326
 327                 if(_pressed_button != 1) {
 328                         return false;
 329                 }
 330
 331                 switch (_mouse_state) {
 332                 case Pressed: // Clicked
 333                         switch (trackview.editor.current_midi_edit_mode()) {
 334                         case MidiEditSelect:
 335                         case MidiEditResize:
 336                                 clear_selection();
 337                                 break;
 338                         case MidiEditPencil:
 339                                 create_note_at(event_x, event_y, _default_note_length);
 340                         default:
 341                                 break;
 342                         }
 343                         _mouse_state = None;
 344                         return true;
 345                 case SelectRectDragging: // Select drag done
 346                         _mouse_state = None;
 347                         delete drag_rect;
 348                         drag_rect = NULL;
 349                         return true;
 350                 case AddDragging: // Add drag done
 351                         _mouse_state = None;
 352                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 353                                 const double x      = drag_rect->property_x1();
 354                                 const double length = trackview.editor.pixel_to_frame(
 355                                                         drag_rect->property_x2() - drag_rect->property_x1());
 356
 357                                 create_note_at(x, drag_rect->property_y1(), length);
 358                         }
 359
 360                         delete drag_rect;
 361                         drag_rect = NULL;
 362                         return true;
 363                 default:
 364                         break;
 365                 }
 366
 367         default:
 368                 break;
 369         }
 370
 371         return false;
 372 }
 373
 374
 375 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 376 void
 377 MidiRegionView::create_note_at(double x, double y, double duration)
 378 {
 379         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 380         MidiStreamView* const view = mtv->midi_view();
 381
 382         double note = midi_stream_view()->y_to_note(y);
 383
 384         assert(note >= 0.0);
 385         assert(note <= 127.0);
 386
 387         nframes_t new_note_time = trackview.editor.pixel_to_frame (x);
 388         assert(new_note_time >= 0);
 389         new_note_time += _region->start();
 390
 391         /*
 392         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 393         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 394         double duration = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 395         */
 396
 397         // we need to snap here again in nframes_t in order to be sample accurate
 398         // since note time is region-absolute but snap_to_frame expects position-relative
 399         // time we have to coordinate transform back and forth here.
 400         nframes_t new_note_time_position_relative = new_note_time      - _region->start();
 401         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 402
 403         // we need to snap the duration too to be sample accurate
 404         nframes_t new_note_duration = nframes_t(duration);
 405         new_note_duration = snap_to_frame(new_note_time_position_relative + new_note_duration) + _region->start()
 406                             - new_note_time;
 407
 408         const boost::shared_ptr<Note> new_note(new Note(0, new_note_time, new_note_duration, (uint8_t)note, 0x40));
 409         view->update_bounds(new_note->note());
 410
 411         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 412         cmd->add(new_note);
 413         _model->apply_command(cmd);
 414
 415         //add_note(new_note);
 416 }
 417
 418
 419 void
 420 MidiRegionView::clear_events()
 421 {
 422         clear_selection();
 423
 424         MidiGhostRegion* gr;
 425         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 426                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 427                         gr->clear_events();
 428                 }
 429         }
 430
 431         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 432                 delete *i;
 433
 434         _events.clear();
 435         _pgm_changes.clear();
 436 }
 437
 438
 439 void
 440 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 441 {
 442         _model = model;
 443
 444         if (_enable_display)
 445                 redisplay_model();
 446 }
 447
 448
 449 void
 450 MidiRegionView::redisplay_model()
 451 {
 452         // Don't redisplay the model if we're currently recording and displaying that
 453         if (_active_notes)
 454                 return;
 455
 456         if (_model) {
 457
 458                 clear_events();
 459                 _model->read_lock();
 460
 461                 MidiModel::Notes notes = _model->notes();
 462                 cerr << endl << "Model contains " << notes.size() << " Notes:" << endl;
 463                 for(MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 464                         cerr << "MODEL: Note time: " << (*i)->time()
 465                                  << " pitch: " << int((*i)->note())
 466                              << " duration: " << (*i)->duration()
 467                              << "   end-time: " << (*i)->end_time()
 468                              << "   velocity: " << int((*i)->velocity())
 469                              //<< " Note-on: " << note.on_event().
 470                              //<< " Note-off: " << note.off_event()
 471                              << endl;
 472                 }
 473
 474                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 475                         add_note(_model->note_at(i));
 476                 }
 477
 478                 for (Automatable::Controls::iterator
 479                      control = _model->controls().begin();
 480                                 control != _model->controls().end(); ++control) {
 481
 482                         if( control->first.type() == MidiPgmChangeAutomation ) {
 483                                 Glib::Mutex::Lock list_lock (control->second->list()->lock());
 484
 485                                 for(AutomationList::const_iterator event = control->second->list()->begin();
 486                                 event != control->second->list()->end(); ++event) {
 487                                         boost::shared_ptr<MIDI::Event> midi_event(new MIDI::Event());
 488                                         MidiControlIterator iter(control->second->list(), (*event)->when, (*event)->value);
 489                                         _model->control_to_midi_event(*midi_event, iter);
 490                                         add_pgm_change(midi_event);
 491                                 }
 492                                 break;
 493                         }
 494                 }
 495
 496                 // Is this necessary ??????????
 497                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 498                                 i != _model->controls().end(); ++i) {
 499
 500                         assert(i->second);
 501
 502                         boost::shared_ptr<AutomationTimeAxisView> at
 503                                 = midi_view()->automation_child(i->second->parameter());
 504                         if (!at)
 505                                 continue;
 506
 507                         Gdk::Color col = midi_stream_view()->get_region_color();
 508
 509                         boost::shared_ptr<AutomationRegionView> arv;
 510
 511                         {
 512                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 513
 514                                 arv = boost::shared_ptr<AutomationRegionView>(
 515                                                 new AutomationRegionView(at->canvas_display,
 516                                                         *at.get(), _region, i->second->list(),
 517                                                         midi_stream_view()->get_samples_per_unit(), col));
 518                         }
 519
 520                         arv->set_duration(_region->length(), this);
 521                         arv->init(col, true);
 522
 523                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 524                 }*/
 525
 526                 _model->read_unlock();
 527
 528         } else {
 529                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 530         }
 531 }
 532
 533
 534 MidiRegionView::~MidiRegionView ()
 535 {
 536         in_destructor = true;
 537
 538         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 539
 540         if (_active_notes)
 541                 end_write();
 542
 543         _selection.clear();
 544         clear_events();
 545         delete _note_group;
 546         delete _delta_command;
 547 }
 548
 549
 550 void
 551 MidiRegionView::region_resized (Change what_changed)
 552 {
 553         RegionView::region_resized(what_changed);
 554
 555         if (what_changed & ARDOUR::PositionChanged) {
 556                 if (_enable_display)
 557                         redisplay_model();
 558         }
 559 }
 560
 561 void
 562 MidiRegionView::reset_width_dependent_items (double pixel_width)
 563 {
 564         RegionView::reset_width_dependent_items(pixel_width);
 565         assert(_pixel_width == pixel_width);
 566
 567         if (_enable_display)
 568                 redisplay_model();
 569 }
 570
 571 void
 572 MidiRegionView::set_y_position_and_height (double y, double h)
 573 {
 574         RegionView::set_y_position_and_height(y, h - 1);
 575
 576         if (_enable_display) {
 577
 578                 _model->read_lock();
 579
 580                 for (std::vector<CanvasNoteEvent*>::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 581                         CanvasNoteEvent* event = *i;
 582                         Item* item = dynamic_cast<Item*>(event);
 583                         assert(item);
 584                         if (event && event->note()) {
 585                                 if (event->note()->note() < midi_stream_view()->lowest_note() ||
 586                                    event->note()->note() > midi_stream_view()->highest_note()) {
 587
 588                                         if (canvas_item_visible(item)) {
 589                                                 item->hide();
 590                                         }
 591                                 } else {
 592                                         if (!canvas_item_visible(item)) {
 593                                                 item->show();
 594                                         }
 595
 596                                         event->hide_velocity();
 597                                         if(CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 598                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 599                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 600
 601                                                 note->property_y1() = y1;
 602                                                 note->property_y2() = y2;
 603                                         }
 604                                         if(CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 605                                                 double x = trackview.editor.frame_to_pixel((nframes_t)
 606                                                                 event->note()->time() - _region->start());
 607                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 608                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 609                                                                  + ((diamond_size-2.0) / 4.0);
 610
 611                                                 hit->set_height(diamond_size);
 612                                                 hit->move(x-hit->x1(), y-hit->y1());
 613                                                 hit->show();
 614                                         }
 615                                         if(event->selected()) {
 616                                                 event->show_velocity();
 617                                         }
 618                                 }
 619                         }
 620                 }
 621
 622                 _model->read_unlock();
 623         }
 624
 625         if (name_text) {
 626                 name_text->raise_to_top();
 627         }
 628 }
 629
 630 GhostRegion*
 631 MidiRegionView::add_ghost (TimeAxisView& tv)
 632 {
 633         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 634         CanvasNote* note;
 635         assert(rtv);
 636
 637         double unit_position = _region->position () / samples_per_unit;
 638         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 639         MidiGhostRegion* ghost;
 640
 641         if (mtv && mtv->midi_view()) {
 642                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 643                    this is because it's nice to have midi notes on top of the note lines and
 644                    audio waveforms under it.
 645                  */
 646                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 647         }
 648         else {
 649                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 650         }
 651
 652         ghost->set_height ();
 653         ghost->set_duration (_region->length() / samples_per_unit);
 654         ghosts.push_back (ghost);
 655
 656         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 657                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 658                         ghost->add_note(note);
 659                 }
 660         }
 661
 662         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 663
 664         return ghost;
 665 }
 666
 667
 668 /** Begin tracking note state for successive calls to add_event
 669  */
 670 void
 671 MidiRegionView::begin_write()
 672 {
 673         assert(!_active_notes);
 674         _active_notes = new CanvasNote*[128];
 675         for (unsigned i=0; i < 128; ++i)
 676                 _active_notes[i] = NULL;
 677 }
 678
 679
 680 /** Destroy note state for add_event
 681  */
 682 void
 683 MidiRegionView::end_write()
 684 {
 685         delete[] _active_notes;
 686         _active_notes = NULL;
 687         _marked_for_selection.clear();
 688 }
 689
 690
 691 /** Resolve an active MIDI note (while recording).
 692  */
 693 void
 694 MidiRegionView::resolve_note(uint8_t note, double end_time)
 695 {
 696         if (midi_view()->note_mode() != Sustained)
 697                 return;
 698
 699         if (_active_notes && _active_notes[note]) {
 700                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)end_time);
 701                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 702                 _active_notes[note] = NULL;
 703         }
 704 }
 705
 706
 707 /** Extend active notes to rightmost edge of region (if length is changed)
 708  */
 709 void
 710 MidiRegionView::extend_active_notes()
 711 {
 712         if (!_active_notes)
 713                 return;
 714
 715         for (unsigned i=0; i < 128; ++i)
 716                 if (_active_notes[i])
 717                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 718 }
 719
 720
 721 /** Add a MIDI note to the view (with duration).
 722  *
 723  * If in sustained mode, notes with duration 0 will be considered active
 724  * notes, and resolve_note should be called when the corresponding note off
 725  * event arrives, to properly display the note.
 726  */
 727 void
 728 MidiRegionView::add_note(const boost::shared_ptr<Note> note)
 729 {
 730         assert(note->time() >= 0);
 731         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 732
 733         // dont display notes beyond the region bounds
 734         if(
 735                         note->time() - _region->start() >= _region->length() ||
 736                         note->time() <  _region->start() ||
 737                         note->note() < midi_stream_view()->lowest_note() ||
 738                         note->note() > midi_stream_view()->highest_note()
 739           ) {
 740                 return;
 741         }
 742
 743         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 744
 745         CanvasNoteEvent *event = 0;
 746
 747         const double x = trackview.editor.frame_to_pixel((nframes_t)note->time() - _region->start());
 748
 749         if (midi_view()->note_mode() == Sustained) {
 750
 751                 //cerr << "MRV::add_note sustained " << note->note() << " @ " << note->time()
 752                 //      << " .. " << note->end_time() << endl;
 753
 754                 const double y1 = midi_stream_view()->note_to_y(note->note());
 755                 const double note_endpixel =
 756                         trackview.editor.frame_to_pixel((nframes_t)note->end_time() - _region->start());
 757
 758                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 759                 ev_rect->property_x1() = x;
 760                 ev_rect->property_y1() = y1;
 761                 if (note->duration() > 0)
 762                         ev_rect->property_x2() = note_endpixel;
 763                 else
 764                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 765                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 766
 767                 if (note->duration() == 0) {
 768                         _active_notes[note->note()] = ev_rect;
 769                         /* outline all but right edge */
 770                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 771                 } else {
 772                         /* outline all edges */
 773                         ev_rect->property_outline_what() = (guint32) 0xF;
 774                 }
 775
 776                 ev_rect->show();
 777                 _events.push_back(ev_rect);
 778                 event = ev_rect;
 779
 780                 MidiGhostRegion* gr;
 781
 782                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 783                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 784                                 gr->add_note(ev_rect);
 785                         }
 786                 }
 787
 788         } else if (midi_view()->note_mode() == Percussive) {
 789
 790                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
 791                 //      << " .. " << note->end_time() << endl;
 792
 793                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 794                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 795
 796                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 797                 ev_diamond->move(x, y);
 798                 ev_diamond->show();
 799                 _events.push_back(ev_diamond);
 800                 event = ev_diamond;
 801         } else {
 802                 event = 0;
 803         }
 804
 805         if(event) {
 806                 if(_marked_for_selection.find(event->note()) != _marked_for_selection.end()) {
 807                                 note_selected(event, true);
 808                 }
 809                 event->on_channel_selection_change(last_channel_selection);
 810         }
 811 }
 812
 813 void
 814 MidiRegionView::add_pgm_change(boost::shared_ptr<MIDI::Event> event)
 815 {
 816         assert(event->time() >= 0);
 817
 818         // dont display notes beyond the region bounds
 819         if(
 820                         event->time() - _region->start() >= _region->length() ||
 821                         event->time() <  _region->start()
 822           ) {
 823                 return;
 824         }
 825
 826         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 827         const double x = trackview.editor.frame_to_pixel((nframes_t)event->time() - _region->start());
 828
 829         double height = midi_stream_view()->contents_height();
 830         _pgm_changes.push_back(
 831                 boost::shared_ptr<CanvasProgramChange>(
 832                         new CanvasProgramChange(*this, *group, event, height, x, 1.0)));
 833 }
 834
 835 void
 836 MidiRegionView::delete_selection()
 837 {
 838         assert(_delta_command);
 839
 840         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 841                 if ((*i)->selected()) {
 842                         _delta_command->remove((*i)->note());
 843                 }
 844         }
 845
 846         _selection.clear();
 847 }
 848
 849 void
 850 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
 851 {
 852         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 853                 if ((*i)->selected() && (*i) != ev) {
 854                         (*i)->selected(false);
 855                 }
 856         }
 857
 858         _selection.clear();
 859 }
 860
 861 void
 862 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
 863 {
 864         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 865                 if ((*i) != ev) {
 866                         (*i)->selected(false);
 867                 }
 868         }
 869
 870         _selection.clear();
 871         _selection.insert(ev);
 872
 873         if ( ! ev->selected()) {
 874                 ev->selected(true);
 875         }
 876 }
 877
 878 void
 879 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 880 {
 881         if ( ! add) {
 882                 clear_selection_except(ev);
 883         }
 884
 885         _selection.insert(ev);
 886
 887         if ( ! ev->selected()) {
 888                 ev->selected(true);
 889         }
 890 }
 891
 892
 893 void
 894 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 895 {
 896         if ( ! add) {
 897                 clear_selection_except(ev);
 898         }
 899
 900         _selection.erase(ev);
 901
 902         if (ev->selected()) {
 903                 ev->selected(false);
 904         }
 905 }
 906
 907
 908 void
 909 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 910 {
 911         const double last_y = std::min(y1, y2);
 912         const double y      = std::max(y1, y2);
 913
 914         // FIXME: so, so, so much slower than this should be
 915
 916         if (x1 < x2) {
 917                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 918                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 919                                 (*i)->selected(true);
 920                                 _selection.insert(*i);
 921                         } else {
 922                                 (*i)->selected(false);
 923                                 _selection.erase(*i);
 924                         }
 925                 }
 926         } else {
 927                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 928                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 929                                 (*i)->selected(true);
 930                                 _selection.insert(*i);
 931                         } else {
 932                                 (*i)->selected(false);
 933                                 _selection.erase(*i);
 934                         }
 935                 }
 936         }
 937 }
 938
 939
 940 void
 941 MidiRegionView::move_selection(double dx, double dy)
 942 {
 943         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 944                 (*i)->move_event(dx, dy);
 945 }
 946
 947
 948 void
 949 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
 950 {
 951         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
 952         if (_selection.find(ev) != _selection.end()) {
 953                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
 954                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
 955                 uint8_t highest_note_difference = 0;
 956
 957                 // find highest and lowest notes first
 958                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 959                         Selection::iterator next = i;
 960                         ++next;
 961
 962                         uint8_t pitch = (*i)->note()->note();
 963                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
 964                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
 965
 966                         i = next;
 967                 }
 968
 969                 /*
 970                 cerr << "dnote: " << (int) dnote << endl;
 971                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
 972                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
 973                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
 974                      << int(highest_note_in_selection) << endl;
 975                 cerr << "selection size: " << _selection.size() << endl;
 976                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
 977                 */
 978
 979                 // Make sure the note pitch does not exceed the MIDI standard range
 980                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
 981                         highest_note_difference = highest_note_in_selection - 127;
 982                 }
 983
 984                 start_delta_command(_("move notes"));
 985
 986                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 987                         Selection::iterator next = i;
 988                         ++next;
 989
 990                         const boost::shared_ptr<Note> copy(new Note(*(*i)->note().get()));
 991
 992                         // we need to snap here again in nframes_t in order to be sample accurate
 993                         double new_note_time = (*i)->note()->time();
 994                         new_note_time +=  dt;
 995
 996                         // keep notes inside region if dragged beyond left region bound
 997                         if(new_note_time < _region->start()) {
 998                                 new_note_time = _region->start();
 999                         }
1000
1001                         // since note time is region-absolute but snap_to_frame expects position-relative
1002                         // time we have to coordinate transform back and forth here.
1003                         new_note_time = snap_to_frame(nframes_t(new_note_time) - _region->start()) + _region->start();
1004
1005                         copy->set_time(new_note_time);
1006
1007                         uint8_t original_pitch = (*i)->note()->note();
1008                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
1009
1010                         // keep notes in standard midi range
1011                         clamp_0_to_127(new_pitch);
1012
1013                         //notes which are dragged beyond the standard midi range snap back to their original place
1014                         if((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
1015                                 new_pitch = original_pitch;
1016                         }
1017
1018                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1019                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1020
1021                         copy->set_note(new_pitch);
1022
1023                         command_remove_note(*i);
1024                         command_add_note(copy);
1025
1026                         _marked_for_selection.insert(copy);
1027                         i = next;
1028                 }
1029                 apply_command();
1030
1031                 // care about notes being moved beyond the upper/lower bounds on the canvas
1032                 if(lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1033                    highest_note_in_selection > midi_stream_view()->highest_note()
1034                 ) {
1035                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1036         }
1037 }
1038 }
1039
1040 nframes_t
1041 MidiRegionView::snap_to_frame(double x)
1042 {
1043         PublicEditor &editor = trackview.editor;
1044         // x is region relative
1045         // convert x to global frame
1046         nframes_t frame = editor.pixel_to_frame(x) + _region->position();
1047         editor.snap_to(frame);
1048         // convert event_frame back to local coordinates relative to position
1049         frame -= _region->position();
1050         return frame;
1051 }
1052
1053 nframes_t
1054 MidiRegionView::snap_to_frame(nframes_t x)
1055 {
1056         PublicEditor &editor = trackview.editor;
1057         // x is region relative
1058         // convert x to global frame
1059         nframes_t frame = x + _region->position();
1060         editor.snap_to(frame);
1061         // convert event_frame back to local coordinates relative to position
1062         frame -= _region->position();
1063         return frame;
1064 }
1065
1066 double
1067 MidiRegionView::snap_to_pixel(double x)
1068 {
1069         return (double) trackview.editor.frame_to_pixel(snap_to_frame(x));
1070 }
1071
1072 double
1073 MidiRegionView::get_position_pixels(void)
1074 {
1075         nframes_t  region_frame  = get_position();
1076         return trackview.editor.frame_to_pixel(region_frame);
1077 }
1078
1079 void
1080 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1081 {
1082         _resize_data.clear();
1083
1084         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1085                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1086
1087                 // only insert CanvasNotes into the map
1088                 if(note) {
1089                         NoteResizeData *resize_data = new NoteResizeData();
1090                         resize_data->canvas_note = note;
1091
1092                         // create a new SimpleRect from the note which will be the resize preview
1093                         SimpleRect *resize_rect =
1094                                 new SimpleRect(
1095                                                 *group,
1096                                                 note->x1(),
1097                                                 note->y1(),
1098                                                 note->x2(),
1099                                                 note->y2());
1100
1101                         // calculate the colors: get the color settings
1102                         uint fill_color =
1103                                 UINT_RGBA_CHANGE_A(
1104                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(),
1105                                                 128);
1106
1107                         // make the resize preview notes more transparent and bright
1108                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1109
1110                         // calculate color based on note velocity
1111                         resize_rect->property_fill_color_rgba() =
1112                                 UINT_INTERPOLATE(
1113                                         note_fill_color(note->note()->velocity()),
1114                                         fill_color,
1115                                         0.85);
1116
1117                         resize_rect->property_outline_color_rgba() =
1118                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
1119
1120                         resize_data->resize_rect = resize_rect;
1121
1122                         if(note_end == CanvasNote::NOTE_ON) {
1123                                 resize_data->current_x = note->x1();
1124                         } else { // NOTE_OFF
1125                                 resize_data->current_x = note->x2();
1126                         }
1127
1128                         _resize_data.push_back(resize_data);
1129                 }
1130         }
1131 }
1132
1133 void
1134 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1135 {
1136         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1137                 SimpleRect     *resize_rect = (*i)->resize_rect;
1138                 CanvasNote     *canvas_note = (*i)->canvas_note;
1139
1140                 const double region_start = get_position_pixels();
1141
1142                 if(relative) {
1143                         (*i)->current_x = (*i)->current_x + x;
1144                 } else {
1145                         // x is in track relative, transform it to region relative
1146                         (*i)->current_x = x - region_start;
1147                 }
1148
1149                 double current_x = (*i)->current_x;
1150
1151                 if(note_end == CanvasNote::NOTE_ON) {
1152                         resize_rect->property_x1() = snap_to_pixel(current_x);
1153                         resize_rect->property_x2() = canvas_note->x2();
1154                 } else {
1155                         resize_rect->property_x2() = snap_to_pixel(current_x);
1156                         resize_rect->property_x1() = canvas_note->x1();
1157                 }
1158         }
1159 }
1160
1161 void
1162 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1163 {
1164         start_delta_command(_("resize notes"));
1165
1166         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1167                 CanvasNote *canvas_note = (*i)->canvas_note;
1168                 SimpleRect *resize_rect = (*i)->resize_rect;
1169                 double      current_x   = (*i)->current_x;
1170                 const double position = get_position_pixels();
1171
1172                 if(!relative) {
1173                         // event_x is in track relative, transform it to region relative
1174                         current_x = event_x - position;
1175                 }
1176
1177                 // because snapping works on world coordinates we have to transform current_x
1178                 // to world coordinates before snapping and transform it back afterwards
1179                 nframes_t current_frame = snap_to_frame(current_x);
1180                 // transform to region start relative
1181                 current_frame += _region->start();
1182
1183                 const boost::shared_ptr<Note> copy(new Note(*(canvas_note->note().get())));
1184
1185                 // resize beginning of note
1186                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1187                         command_remove_note(canvas_note);
1188                         copy->on_event().time() = current_frame;
1189                         command_add_note(copy);
1190                         _marked_for_selection.insert(copy);
1191                 }
1192                 // resize end of note
1193                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1194                         command_remove_note(canvas_note);
1195                         command_remove_note(canvas_note);
1196                         copy->off_event().time() = current_frame;
1197                         command_add_note(copy);
1198                         _marked_for_selection.insert(copy);
1199                 }
1200
1201                 delete resize_rect;
1202                 delete (*i);
1203         }
1204
1205         _resize_data.clear();
1206         apply_command();
1207 }
1208
1209
1210 void
1211 MidiRegionView::change_velocity(uint8_t velocity, bool relative)
1212 {
1213         start_delta_command(_("change velocity"));
1214         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1215                 Selection::iterator next = i;
1216                 ++next;
1217
1218                 CanvasNoteEvent *event = *i;
1219                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1220
1221                 if(relative) {
1222                         uint8_t new_velocity = copy->velocity() + velocity;
1223                         clamp_0_to_127(new_velocity);
1224
1225                         copy->set_velocity(new_velocity);
1226                 } else { // absolute
1227                         copy->set_velocity(velocity);
1228                 }
1229
1230                 command_remove_note(event);
1231                 command_add_note(copy);
1232
1233                 _marked_for_selection.insert(copy);
1234                 i = next;
1235         }
1236
1237         // dont keep notes selected if tweaking a single note
1238         if(_marked_for_selection.size() == 1) {
1239                 _marked_for_selection.clear();
1240         }
1241
1242         apply_command();
1243 }
1244
1245 void
1246 MidiRegionView::change_channel(uint8_t channel)
1247 {
1248         start_delta_command(_("change channel"));
1249         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1250                 Selection::iterator next = i;
1251                 ++next;
1252
1253                 CanvasNoteEvent *event = *i;
1254                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1255
1256                 copy->set_channel(channel);
1257
1258                 command_remove_note(event);
1259                 command_add_note(copy);
1260
1261                 _marked_for_selection.insert(copy);
1262                 i = next;
1263         }
1264
1265         // dont keep notes selected if tweaking a single note
1266         if(_marked_for_selection.size() == 1) {
1267                 _marked_for_selection.clear();
1268         }
1269
1270         apply_command();
1271 }
1272
1273
1274 void
1275 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1276 {
1277         if (ev->note() && _mouse_state == EraseTouchDragging) {
1278                 start_delta_command(_("note entered"));
1279                 ev->selected(true);
1280                 _delta_command->remove(ev->note());
1281         } else if (_mouse_state == SelectTouchDragging) {
1282                 note_selected(ev, true);
1283         }
1284 }
1285
1286
1287 void
1288 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1289 {
1290         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1291         if (msrc)
1292                 display_model(msrc->model());
1293 }
1294
1295 void
1296 MidiRegionView::set_frame_color()
1297 {
1298         if (frame) {
1299                 if (_selected && should_show_selection) {
1300                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1301                 } else {
1302                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1303                 }
1304         }
1305 }
1306
1307 void
1308 MidiRegionView::midi_force_channel_changed(int8_t channel)
1309 {
1310         force_channel = channel;
1311 }
1312
1313 void
1314 MidiRegionView::midi_channel_selection_changed(uint16_t selection)
1315 {
1316         if(force_channel >= 0) {
1317                 selection = 0xFFFF;
1318         }
1319
1320         for(std::vector<ArdourCanvas::CanvasNoteEvent*>::iterator i = _events.begin();
1321                 i != _events.end();
1322                 ++i) {
1323                 (*i)->on_channel_selection_change(selection);
1324         }
1325         last_channel_selection = selection;
1326 }