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_channel_mode_changed().connect(
 139                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 140 }
 141
 142 bool
 143 MidiRegionView::canvas_event(GdkEvent* ev)
 144 {
 145         static bool delete_mod = false;
 146         static Editing::MidiEditMode original_mode;
 147
 148         static double drag_start_x, drag_start_y;
 149         static double last_x, last_y;
 150         double event_x, event_y;
 151         nframes_t event_frame = 0;
 152
 153         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 154
 155         if (trackview.editor.current_mouse_mode() != MouseNote)
 156                 return false;
 157
 158         // Mmmm, spaghetti
 159
 160         switch (ev->type) {
 161         case GDK_KEY_PRESS:
 162                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 163                         delete_mod = true;
 164                         original_mode = trackview.editor.current_midi_edit_mode();
 165                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 166                         start_delta_command(_("erase notes"));
 167                         _mouse_state = EraseTouchDragging;
 168                         return true;
 169                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 170                         _mouse_state = SelectTouchDragging;
 171                         return true;
 172                 } else if (ev->key.keyval == GDK_Escape) {
 173                         clear_selection();
 174                         _mouse_state = None;
 175                 }
 176                 return false;
 177
 178         case GDK_KEY_RELEASE:
 179                 if (ev->key.keyval == GDK_Delete) {
 180                         if (_mouse_state == EraseTouchDragging) {
 181                                 delete_selection();
 182                                 apply_command();
 183                         }
 184                         if (delete_mod) {
 185                                 trackview.editor.set_midi_edit_mode(original_mode);
 186                                 _mouse_state = None;
 187                                 delete_mod = false;
 188                         }
 189                         return true;
 190                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 191                         _mouse_state = None;
 192                         return true;
 193                 }
 194                 return false;
 195
 196         case GDK_BUTTON_PRESS:
 197                 if (_mouse_state != SelectTouchDragging &&
 198                         _mouse_state != EraseTouchDragging &&
 199                         ev->button.button == 1  ) {
 200                         _pressed_button = ev->button.button;
 201                         _mouse_state = Pressed;
 202                         return true;
 203                 }
 204                 _pressed_button = ev->button.button;
 205                 return false;
 206
 207         case GDK_ENTER_NOTIFY:
 208                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 209                 Keyboard::magic_widget_grab_focus();
 210                 group->grab_focus();
 211                 break;
 212
 213         case GDK_MOTION_NOTIFY:
 214                 event_x = ev->motion.x;
 215                 event_y = ev->motion.y;
 216                 group->w2i(event_x, event_y);
 217
 218                 // convert event_x to global frame
 219                 event_frame = trackview.editor.pixel_to_frame(event_x) + _region->position();
 220                 trackview.editor.snap_to(event_frame);
 221                 // convert event_frame back to local coordinates relative to position
 222                 event_frame -= _region->position();
 223
 224                 switch (_mouse_state) {
 225                 case Pressed: // Drag start
 226
 227                         // Select drag start
 228                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 229                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 230                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 231                                 last_x = event_x;
 232                                 last_y = event_y;
 233                                 drag_start_x = event_x;
 234                                 drag_start_y = event_y;
 235
 236                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 237                                 drag_rect->property_x1() = event_x;
 238                                 drag_rect->property_y1() = event_y;
 239                                 drag_rect->property_x2() = event_x;
 240                                 drag_rect->property_y2() = event_y;
 241                                 drag_rect->property_outline_what() = 0xFF;
 242                                 drag_rect->property_outline_color_rgba()
 243                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 244                                 drag_rect->property_fill_color_rgba()
 245                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 246
 247                                 _mouse_state = SelectRectDragging;
 248                                 return true;
 249
 250                         // Add note drag start
 251                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 252                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 253                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 254                                 last_x = event_x;
 255                                 last_y = event_y;
 256                                 drag_start_x = event_x;
 257                                 drag_start_y = event_y;
 258
 259                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 260                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 261
 262                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 263                                 drag_rect->property_x2() = event_x;
 264                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 265                                 drag_rect->property_outline_what() = 0xFF;
 266                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 267
 268                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 269
 270                                 _mouse_state = AddDragging;
 271                                 return true;
 272                         }
 273
 274                         return false;
 275
 276                 case SelectRectDragging: // Select drag motion
 277                 case AddDragging: // Add note drag motion
 278                         if (ev->motion.is_hint) {
 279                                 int t_x;
 280                                 int t_y;
 281                                 GdkModifierType state;
 282                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 283                                 event_x = t_x;
 284                                 event_y = t_y;
 285                         }
 286
 287                         if (_mouse_state == AddDragging)
 288                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 289
 290                         if (drag_rect) {
 291                                 if (event_x > drag_start_x)
 292                                         drag_rect->property_x2() = event_x;
 293                                 else
 294                                         drag_rect->property_x1() = event_x;
 295                         }
 296
 297                         if (drag_rect && _mouse_state == SelectRectDragging) {
 298                                 if (event_y > drag_start_y)
 299                                         drag_rect->property_y2() = event_y;
 300                                 else
 301                                         drag_rect->property_y1() = event_y;
 302
 303                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 304                         }
 305
 306                         last_x = event_x;
 307                         last_y = event_y;
 308
 309                 case EraseTouchDragging:
 310                 case SelectTouchDragging:
 311                         return false;
 312
 313                 default:
 314                         break;
 315                 }
 316                 break;
 317
 318         case GDK_BUTTON_RELEASE:
 319                 event_x = ev->motion.x;
 320                 event_y = ev->motion.y;
 321                 group->w2i(event_x, event_y);
 322                 group->ungrab(ev->button.time);
 323                 event_frame = trackview.editor.pixel_to_frame(event_x);
 324
 325                 if (_pressed_button != 1) {
 326                         return false;
 327                 }
 328
 329                 switch (_mouse_state) {
 330                 case Pressed: // Clicked
 331                         switch (trackview.editor.current_midi_edit_mode()) {
 332                         case MidiEditSelect:
 333                         case MidiEditResize:
 334                                 clear_selection();
 335                                 break;
 336                         case MidiEditPencil:
 337                                 create_note_at(event_x, event_y, _default_note_length);
 338                         default:
 339                                 break;
 340                         }
 341                         _mouse_state = None;
 342                         return true;
 343                 case SelectRectDragging: // Select drag done
 344                         _mouse_state = None;
 345                         delete drag_rect;
 346                         drag_rect = NULL;
 347                         return true;
 348                 case AddDragging: // Add drag done
 349                         _mouse_state = None;
 350                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 351                                 const double x      = drag_rect->property_x1();
 352                                 const double length = trackview.editor.pixel_to_frame(
 353                                                         drag_rect->property_x2() - drag_rect->property_x1());
 354
 355                                 create_note_at(x, drag_rect->property_y1(), length);
 356                         }
 357
 358                         delete drag_rect;
 359                         drag_rect = NULL;
 360                         return true;
 361                 default:
 362                         break;
 363                 }
 364
 365         default:
 366                 break;
 367         }
 368
 369         return false;
 370 }
 371
 372
 373 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 374 void
 375 MidiRegionView::create_note_at(double x, double y, double duration)
 376 {
 377         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 378         MidiStreamView* const view = mtv->midi_view();
 379
 380         double note = midi_stream_view()->y_to_note(y);
 381
 382         assert(note >= 0.0);
 383         assert(note <= 127.0);
 384
 385         nframes_t new_note_time = trackview.editor.pixel_to_frame (x);
 386         assert(new_note_time >= 0);
 387         new_note_time += _region->start();
 388
 389         /*
 390         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 391         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 392         double duration = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 393         */
 394
 395         // we need to snap here again in nframes_t in order to be sample accurate
 396         // since note time is region-absolute but snap_to_frame expects position-relative
 397         // time we have to coordinate transform back and forth here.
 398         nframes_t new_note_time_position_relative = new_note_time      - _region->start();
 399         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 400
 401         // we need to snap the duration too to be sample accurate
 402         nframes_t new_note_duration = nframes_t(duration);
 403         new_note_duration = snap_to_frame(new_note_time_position_relative + new_note_duration) + _region->start()
 404                             - new_note_time;
 405
 406         const boost::shared_ptr<Note> new_note(new Note(0, new_note_time, new_note_duration, (uint8_t)note, 0x40));
 407         view->update_bounds(new_note->note());
 408
 409         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 410         cmd->add(new_note);
 411         _model->apply_command(cmd);
 412
 413         //add_note(new_note);
 414 }
 415
 416
 417 void
 418 MidiRegionView::clear_events()
 419 {
 420         clear_selection();
 421
 422         MidiGhostRegion* gr;
 423         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 424                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 425                         gr->clear_events();
 426                 }
 427         }
 428
 429         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 430                 delete *i;
 431
 432         _events.clear();
 433         _pgm_changes.clear();
 434 }
 435
 436
 437 void
 438 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 439 {
 440         _model = model;
 441
 442         if (_enable_display)
 443                 redisplay_model();
 444 }
 445
 446
 447 void
 448 MidiRegionView::redisplay_model()
 449 {
 450         // Don't redisplay the model if we're currently recording and displaying that
 451         if (_active_notes)
 452                 return;
 453
 454         if (_model) {
 455
 456                 clear_events();
 457                 _model->read_lock();
 458
 459                 /*MidiModel::Notes notes = _model->notes();
 460                 cerr << endl << _model->midi_source()->name() << " : redisplaying " << notes.size() << " notes:" << endl;
 461                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 462                         cerr << "NOTE  time: " << (*i)->time()
 463                                  << "  pitch: " << int((*i)->note())
 464                              << "  duration: " << (*i)->duration()
 465                              << "  end-time: " << (*i)->end_time()
 466                              << "  velocity: " << int((*i)->velocity())
 467                              << endl;
 468                 }*/
 469
 470
 471                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 472                         add_note(_model->note_at(i));
 473                 }
 474
 475                 for (Automatable::Controls::iterator
 476                      control = _model->controls().begin();
 477                                 control != _model->controls().end(); ++control) {
 478
 479                         if ( control->first.type() == MidiPgmChangeAutomation ) {
 480                                 Glib::Mutex::Lock list_lock (control->second->list()->lock());
 481
 482                                 for (AutomationList::const_iterator event = control->second->list()->begin();
 483                                 event != control->second->list()->end(); ++event) {
 484                                         boost::shared_ptr<MIDI::Event> midi_event(new MIDI::Event());
 485                                         MidiControlIterator iter(control->second->list(), (*event)->when, (*event)->value);
 486                                         _model->control_to_midi_event(*midi_event, iter);
 487                                         add_pgm_change(midi_event);
 488                                 }
 489                                 break;
 490                         }
 491                 }
 492
 493                 // Is this necessary ??????????
 494                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 495                                 i != _model->controls().end(); ++i) {
 496
 497                         assert(i->second);
 498
 499                         boost::shared_ptr<AutomationTimeAxisView> at
 500                                 = midi_view()->automation_child(i->second->parameter());
 501                         if (!at)
 502                                 continue;
 503
 504                         Gdk::Color col = midi_stream_view()->get_region_color();
 505
 506                         boost::shared_ptr<AutomationRegionView> arv;
 507
 508                         {
 509                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 510
 511                                 arv = boost::shared_ptr<AutomationRegionView>(
 512                                                 new AutomationRegionView(at->canvas_display,
 513                                                         *at.get(), _region, i->second->list(),
 514                                                         midi_stream_view()->get_samples_per_unit(), col));
 515                         }
 516
 517                         arv->set_duration(_region->length(), this);
 518                         arv->init(col, true);
 519
 520                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 521                 }*/
 522
 523                 _model->read_unlock();
 524
 525         } else {
 526                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 527         }
 528 }
 529
 530
 531 MidiRegionView::~MidiRegionView ()
 532 {
 533         in_destructor = true;
 534
 535         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 536
 537         if (_active_notes)
 538                 end_write();
 539
 540         _selection.clear();
 541         clear_events();
 542         delete _note_group;
 543         delete _delta_command;
 544 }
 545
 546
 547 void
 548 MidiRegionView::region_resized (Change what_changed)
 549 {
 550         RegionView::region_resized(what_changed);
 551
 552         if (what_changed & ARDOUR::PositionChanged) {
 553                 if (_enable_display)
 554                         redisplay_model();
 555         }
 556 }
 557
 558 void
 559 MidiRegionView::reset_width_dependent_items (double pixel_width)
 560 {
 561         RegionView::reset_width_dependent_items(pixel_width);
 562         assert(_pixel_width == pixel_width);
 563
 564         if (_enable_display)
 565                 redisplay_model();
 566 }
 567
 568 void
 569 MidiRegionView::set_y_position_and_height (double y, double h)
 570 {
 571         RegionView::set_y_position_and_height(y, h - 1);
 572
 573         if (_enable_display) {
 574
 575                 _model->read_lock();
 576
 577                 for (std::vector<CanvasNoteEvent*>::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 578                         CanvasNoteEvent* event = *i;
 579                         Item* item = dynamic_cast<Item*>(event);
 580                         assert(item);
 581                         if (event && event->note()) {
 582                                 if (event->note()->note() < midi_stream_view()->lowest_note() ||
 583                                    event->note()->note() > midi_stream_view()->highest_note()) {
 584
 585                                         if (canvas_item_visible(item)) {
 586                                                 item->hide();
 587                                         }
 588                                 } else {
 589                                         if (!canvas_item_visible(item)) {
 590                                                 item->show();
 591                                         }
 592
 593                                         event->hide_velocity();
 594                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 595                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 596                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 597
 598                                                 note->property_y1() = y1;
 599                                                 note->property_y2() = y2;
 600                                         }
 601                                         if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 602                                                 double x = trackview.editor.frame_to_pixel((nframes_t)
 603                                                                 event->note()->time() - _region->start());
 604                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 605                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 606                                                                  + ((diamond_size-2.0) / 4.0);
 607
 608                                                 hit->set_height(diamond_size);
 609                                                 hit->move(x-hit->x1(), y-hit->y1());
 610                                                 hit->show();
 611                                         }
 612                                         if (event->selected()) {
 613                                                 event->show_velocity();
 614                                         }
 615                                 }
 616                         }
 617                 }
 618
 619                 _model->read_unlock();
 620         }
 621
 622         if (name_text) {
 623                 name_text->raise_to_top();
 624         }
 625 }
 626
 627 GhostRegion*
 628 MidiRegionView::add_ghost (TimeAxisView& tv)
 629 {
 630         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 631         CanvasNote* note;
 632         assert(rtv);
 633
 634         double unit_position = _region->position () / samples_per_unit;
 635         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 636         MidiGhostRegion* ghost;
 637
 638         if (mtv && mtv->midi_view()) {
 639                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 640                    this is because it's nice to have midi notes on top of the note lines and
 641                    audio waveforms under it.
 642                  */
 643                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 644         }
 645         else {
 646                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 647         }
 648
 649         ghost->set_height ();
 650         ghost->set_duration (_region->length() / samples_per_unit);
 651         ghosts.push_back (ghost);
 652
 653         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 654                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 655                         ghost->add_note(note);
 656                 }
 657         }
 658
 659         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 660
 661         return ghost;
 662 }
 663
 664
 665 /** Begin tracking note state for successive calls to add_event
 666  */
 667 void
 668 MidiRegionView::begin_write()
 669 {
 670         assert(!_active_notes);
 671         _active_notes = new CanvasNote*[128];
 672         for (unsigned i=0; i < 128; ++i) {
 673                 _active_notes[i] = NULL;
 674         }
 675 }
 676
 677
 678 /** Destroy note state for add_event
 679  */
 680 void
 681 MidiRegionView::end_write()
 682 {
 683         delete[] _active_notes;
 684         _active_notes = NULL;
 685         _marked_for_selection.clear();
 686 }
 687
 688
 689 /** Resolve an active MIDI note (while recording).
 690  */
 691 void
 692 MidiRegionView::resolve_note(uint8_t note, double end_time)
 693 {
 694         if (midi_view()->note_mode() != Sustained)
 695                 return;
 696
 697         if (_active_notes && _active_notes[note]) {
 698                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)end_time);
 699                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 700                 _active_notes[note] = NULL;
 701         }
 702 }
 703
 704
 705 /** Extend active notes to rightmost edge of region (if length is changed)
 706  */
 707 void
 708 MidiRegionView::extend_active_notes()
 709 {
 710         if (!_active_notes)
 711                 return;
 712
 713         for (unsigned i=0; i < 128; ++i)
 714                 if (_active_notes[i])
 715                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 716 }
 717
 718
 719 /** Add a MIDI note to the view (with duration).
 720  *
 721  * If in sustained mode, notes with duration 0 will be considered active
 722  * notes, and resolve_note should be called when the corresponding note off
 723  * event arrives, to properly display the note.
 724  */
 725 void
 726 MidiRegionView::add_note(const boost::shared_ptr<Note> note)
 727 {
 728         assert(note->time() >= 0);
 729         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 730
 731         // dont display notes beyond the region bounds
 732         if (
 733                         note->time() - _region->start() >= _region->length() ||
 734                         note->time() <  _region->start() ||
 735                         note->note() < midi_stream_view()->lowest_note() ||
 736                         note->note() > midi_stream_view()->highest_note()
 737           ) {
 738                 return;
 739         }
 740
 741         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 742
 743         CanvasNoteEvent *event = 0;
 744
 745         const double x = trackview.editor.frame_to_pixel((nframes_t)note->time() - _region->start());
 746
 747         if (midi_view()->note_mode() == Sustained) {
 748
 749                 //cerr << "MRV::add_note sustained " << note->note() << " @ " << note->time()
 750                 //      << " .. " << note->end_time() << endl;
 751
 752                 const double y1 = midi_stream_view()->note_to_y(note->note());
 753                 const double note_endpixel =
 754                         trackview.editor.frame_to_pixel((nframes_t)note->end_time() - _region->start());
 755
 756                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 757                 ev_rect->property_x1() = x;
 758                 ev_rect->property_y1() = y1;
 759                 if (note->duration() > 0)
 760                         ev_rect->property_x2() = note_endpixel;
 761                 else
 762                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 763                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 764
 765                 if (note->duration() == 0) {
 766                         assert(_active_notes);
 767                         assert(note->note() < 128);
 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_channel_mode_changed(ChannelMode mode, uint16_t mask)
1309 {
1310         switch (mode) {
1311         case AllChannels:
1312         case FilterChannels:
1313                 _force_channel = -1;
1314                 break;
1315         case ForceChannel:
1316                 _force_channel = mask;
1317                 mask = 0xFFFF; // Show all notes as active (below)
1318         };
1319
1320         // Update notes for selection
1321         for (std::vector<ArdourCanvas::CanvasNoteEvent*>::iterator i = _events.begin();
1322                         i != _events.end(); ++i) {
1323                 (*i)->on_channel_selection_change(mask);
1324         }
1325
1326         _last_channel_selection = mask;
1327 }
1328