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 "public_editor.h"
  44 #include "ghostregion.h"
  45 #include "midi_time_axis.h"
  46 #include "automation_time_axis.h"
  47 #include "automation_region_view.h"
  48 #include "utils.h"
  49 #include "midi_util.h"
  50 #include "gui_thread.h"
  51 #include "keyboard.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59 using namespace ArdourCanvas;
  60
  61 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  62         : RegionView (parent, tv, r, spu, basic_color)
  63         , last_channel_selection(0xFFFF)
  64         , _default_note_length(0.0)
  65         , _active_notes(0)
  66         , _note_group(new ArdourCanvas::Group(*parent))
  67         , _delta_command(NULL)
  68         , _mouse_state(None)
  69         , _pressed_button(0)
  70 {
  71         group->lower_to_bottom();
  72         _note_group->raise_to_top();
  73
  74         frame->property_fill_color_rgba() = 0xff000033;
  75 }
  76
  77 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  78         : RegionView (parent, tv, r, spu, basic_color, visibility)
  79         , last_channel_selection(0xFFFF)
  80         , _default_note_length(0.0)
  81         , _active_notes(0)
  82         , _note_group(new ArdourCanvas::Group(*parent))
  83         , _delta_command(NULL)
  84         , _mouse_state(None)
  85         , _pressed_button(0)
  86
  87 {
  88         _note_group->raise_to_top();
  89 }
  90
  91 void
  92 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  93 {
  94         if (wfd)
  95                 midi_region()->midi_source(0)->load_model();
  96
  97         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
  98         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
  99         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
 100                         / m.beats_per_bar();
 101
 102         _model = midi_region()->midi_source(0)->model();
 103         _enable_display = false;
 104
 105         RegionView::init(basic_color, false);
 106
 107         compute_colors (basic_color);
 108
 109         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 110
 111         set_y_position_and_height (0, trackview.height);
 112
 113         region_muted ();
 114         region_resized (BoundsChanged);
 115         region_locked ();
 116
 117         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 118
 119         set_colors ();
 120
 121         _enable_display = true;
 122
 123         if (_model) {
 124                 if (wfd) {
 125                         redisplay_model();
 126                 }
 127                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 128         }
 129
 130         midi_region()->midi_source(0)->Switched.connect(sigc::mem_fun(this, &MidiRegionView::switch_source));
 131
 132         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 133
 134         midi_view()->signal_channel_selection_changed().connect(
 135                         mem_fun(this, &MidiRegionView::midi_channel_selection_changed));
 136 }
 137
 138 bool
 139 MidiRegionView::canvas_event(GdkEvent* ev)
 140 {
 141         static bool delete_mod = false;
 142         static Editing::MidiEditMode original_mode;
 143
 144         static double drag_start_x, drag_start_y;
 145         static double last_x, last_y;
 146         double event_x, event_y;
 147         nframes_t event_frame = 0;
 148
 149         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 150
 151         if (trackview.editor.current_mouse_mode() != MouseNote)
 152                 return false;
 153
 154         // Mmmm, spaghetti
 155
 156         switch (ev->type) {
 157         case GDK_KEY_PRESS:
 158                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 159                         delete_mod = true;
 160                         original_mode = trackview.editor.current_midi_edit_mode();
 161                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 162                         start_delta_command(_("erase notes"));
 163                         _mouse_state = EraseTouchDragging;
 164                         return true;
 165                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 166                         _mouse_state = SelectTouchDragging;
 167                         return true;
 168                 } else if (ev->key.keyval == GDK_Escape) {
 169                         clear_selection();
 170                         _mouse_state = None;
 171                 }
 172                 return false;
 173
 174         case GDK_KEY_RELEASE:
 175                 if (ev->key.keyval == GDK_Delete) {
 176                         if (_mouse_state == EraseTouchDragging) {
 177                                 delete_selection();
 178                                 apply_command();
 179                         }
 180                         if (delete_mod) {
 181                                 trackview.editor.set_midi_edit_mode(original_mode);
 182                                 _mouse_state = None;
 183                                 delete_mod = false;
 184                         }
 185                         return true;
 186                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 187                         _mouse_state = None;
 188                         return true;
 189                 }
 190                 return false;
 191
 192         case GDK_BUTTON_PRESS:
 193                 if (_mouse_state != SelectTouchDragging &&
 194                         _mouse_state != EraseTouchDragging &&
 195                         ev->button.button == 1  ) {
 196                         _pressed_button = ev->button.button;
 197                         _mouse_state = Pressed;
 198                         return true;
 199                 }
 200                 _pressed_button = ev->button.button;
 201                 return false;
 202
 203         case GDK_ENTER_NOTIFY:
 204                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 205                 Keyboard::magic_widget_grab_focus();
 206                 group->grab_focus();
 207                 break;
 208
 209         case GDK_MOTION_NOTIFY:
 210                 event_x = ev->motion.x;
 211                 event_y = ev->motion.y;
 212                 group->w2i(event_x, event_y);
 213
 214                 // convert event_x to global frame
 215                 event_frame = trackview.editor.pixel_to_frame(event_x) + _region->position();
 216                 trackview.editor.snap_to(event_frame);
 217                 // convert event_frame back to local coordinates relative to position
 218                 event_frame -= _region->position();
 219
 220                 switch (_mouse_state) {
 221                 case Pressed: // Drag start
 222
 223                         // Select drag start
 224                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 225                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 226                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 227                                 last_x = event_x;
 228                                 last_y = event_y;
 229                                 drag_start_x = event_x;
 230                                 drag_start_y = event_y;
 231
 232                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 233                                 drag_rect->property_x1() = event_x;
 234                                 drag_rect->property_y1() = event_y;
 235                                 drag_rect->property_x2() = event_x;
 236                                 drag_rect->property_y2() = event_y;
 237                                 drag_rect->property_outline_what() = 0xFF;
 238                                 drag_rect->property_outline_color_rgba()
 239                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 240                                 drag_rect->property_fill_color_rgba()
 241                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 242
 243                                 _mouse_state = SelectRectDragging;
 244                                 return true;
 245
 246                         // Add note drag start
 247                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 248                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 249                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 250                                 last_x = event_x;
 251                                 last_y = event_y;
 252                                 drag_start_x = event_x;
 253                                 drag_start_y = event_y;
 254
 255                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 256                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 257
 258                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 259                                 drag_rect->property_x2() = event_x;
 260                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 261                                 drag_rect->property_outline_what() = 0xFF;
 262                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 263
 264                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 265
 266                                 _mouse_state = AddDragging;
 267                                 return true;
 268                         }
 269
 270                         return false;
 271
 272                 case SelectRectDragging: // Select drag motion
 273                 case AddDragging: // Add note drag motion
 274                         if (ev->motion.is_hint) {
 275                                 int t_x;
 276                                 int t_y;
 277                                 GdkModifierType state;
 278                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 279                                 event_x = t_x;
 280                                 event_y = t_y;
 281                         }
 282
 283                         if (_mouse_state == AddDragging)
 284                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 285
 286                         if (drag_rect)
 287                                 if (event_x > drag_start_x)
 288                                         drag_rect->property_x2() = event_x;
 289                                 else
 290                                         drag_rect->property_x1() = event_x;
 291
 292                         if (drag_rect && _mouse_state == SelectRectDragging) {
 293                                 if (event_y > drag_start_y)
 294                                         drag_rect->property_y2() = event_y;
 295                                 else
 296                                         drag_rect->property_y1() = event_y;
 297
 298                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 299                         }
 300
 301                         last_x = event_x;
 302                         last_y = event_y;
 303
 304                 case EraseTouchDragging:
 305                 case SelectTouchDragging:
 306                         return false;
 307
 308                 default:
 309                         break;
 310                 }
 311                 break;
 312
 313         case GDK_BUTTON_RELEASE:
 314                 event_x = ev->motion.x;
 315                 event_y = ev->motion.y;
 316                 group->w2i(event_x, event_y);
 317                 group->ungrab(ev->button.time);
 318                 event_frame = trackview.editor.pixel_to_frame(event_x);
 319
 320                 if(_pressed_button != 1) {
 321                         return false;
 322                 }
 323
 324                 switch (_mouse_state) {
 325                 case Pressed: // Clicked
 326                         switch (trackview.editor.current_midi_edit_mode()) {
 327                         case MidiEditSelect:
 328                         case MidiEditResize:
 329                                 clear_selection();
 330                                 break;
 331                         case MidiEditPencil:
 332                                 create_note_at(event_x, event_y, _default_note_length);
 333                         default:
 334                                 break;
 335                         }
 336                         _mouse_state = None;
 337                         return true;
 338                 case SelectRectDragging: // Select drag done
 339                         _mouse_state = None;
 340                         delete drag_rect;
 341                         drag_rect = NULL;
 342                         return true;
 343                 case AddDragging: // Add drag done
 344                         _mouse_state = None;
 345                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 346                                 const double x      = drag_rect->property_x1();
 347                                 const double length = trackview.editor.pixel_to_frame(
 348                                                         drag_rect->property_x2() - drag_rect->property_x1());
 349
 350                                 create_note_at(x, drag_rect->property_y1(), length);
 351                         }
 352
 353                         delete drag_rect;
 354                         drag_rect = NULL;
 355                         return true;
 356                 default:
 357                         break;
 358                 }
 359
 360         default:
 361                 break;
 362         }
 363
 364         return false;
 365 }
 366
 367
 368 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 369 void
 370 MidiRegionView::create_note_at(double x, double y, double duration)
 371 {
 372         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 373         MidiStreamView* const view = mtv->midi_view();
 374
 375         double note = midi_stream_view()->y_to_note(y);
 376
 377         assert(note >= 0.0);
 378         assert(note <= 127.0);
 379
 380         nframes_t new_note_time = trackview.editor.pixel_to_frame (x);
 381         assert(new_note_time >= 0);
 382         new_note_time += _region->start();
 383
 384         /*
 385         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 386         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 387         double duration = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 388         */
 389
 390         // we need to snap here again in nframes_t in order to be sample accurate
 391         // since note time is region-absolute but snap_to_frame expects position-relative
 392         // time we have to coordinate transform back and forth here.
 393         nframes_t new_note_time_position_relative = new_note_time      - _region->start();
 394         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 395
 396         // we need to snap the duration too to be sample accurate
 397         nframes_t new_note_duration = nframes_t(duration);
 398         new_note_duration = snap_to_frame(new_note_time_position_relative + new_note_duration) + _region->start()
 399                             - new_note_time;
 400
 401         const boost::shared_ptr<Note> new_note(new Note(0, new_note_time, new_note_duration, (uint8_t)note, 0x40));
 402         view->update_bounds(new_note->note());
 403
 404         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 405         cmd->add(new_note);
 406         _model->apply_command(cmd);
 407
 408         //add_note(new_note);
 409 }
 410
 411
 412 void
 413 MidiRegionView::clear_events()
 414 {
 415         clear_selection();
 416
 417         MidiGhostRegion* gr;
 418         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 419                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 420                         gr->clear_events();
 421                 }
 422         }
 423
 424         for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 425                 delete *i;
 426
 427         _events.clear();
 428 }
 429
 430
 431 void
 432 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 433 {
 434         _model = model;
 435
 436         if (_enable_display)
 437                 redisplay_model();
 438 }
 439
 440
 441 void
 442 MidiRegionView::redisplay_model()
 443 {
 444         // Don't redisplay the model if we're currently recording and displaying that
 445         if (_active_notes)
 446                 return;
 447
 448         if (_model) {
 449
 450                 clear_events();
 451                 begin_write();
 452
 453                 _model->read_lock();
 454
 455                 /*
 456                 MidiModel::Notes notes = _model->notes();
 457                 cerr << endl << "Model contains " << notes.size() << " Notes:" << endl;
 458                 for(MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 459                         Note note = *(*i).get();
 460                         cerr << "MODEL: Note time: " << note.time() << " duration: " << note.duration()
 461                              << "   end-time: " << note.end_time()
 462                              << "   velocity: " << int(note.velocity())
 463                              //<< " Note-on: " << note.on_event().
 464                              //<< " Note-off: " << note.off_event()
 465                              << endl;
 466                 }*/
 467
 468                 for (size_t i=0; i < _model->n_notes(); ++i) {
 469                         add_note(_model->note_at(i));
 470                 }
 471
 472                 end_write();
 473
 474                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 475                                 i != _model->controls().end(); ++i) {
 476
 477                         assert(i->second);
 478
 479                         boost::shared_ptr<AutomationTimeAxisView> at
 480                                 = midi_view()->automation_child(i->second->parameter());
 481                         if (!at)
 482                                 continue;
 483
 484                         Gdk::Color col = midi_stream_view()->get_region_color();
 485
 486                         boost::shared_ptr<AutomationRegionView> arv;
 487
 488                         {
 489                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 490
 491                                 arv = boost::shared_ptr<AutomationRegionView>(
 492                                                 new AutomationRegionView(at->canvas_display,
 493                                                         *at.get(), _region, i->second->list(),
 494                                                         midi_stream_view()->get_samples_per_unit(), col));
 495                         }
 496
 497                         arv->set_duration(_region->length(), this);
 498                         arv->init(col, true);
 499
 500                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 501                 }*/
 502
 503                 _model->read_unlock();
 504
 505         } else {
 506                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 507         }
 508 }
 509
 510
 511 MidiRegionView::~MidiRegionView ()
 512 {
 513         in_destructor = true;
 514
 515         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 516
 517         if (_active_notes)
 518                 end_write();
 519
 520         _selection.clear();
 521         clear_events();
 522         delete _note_group;
 523         delete _delta_command;
 524 }
 525
 526
 527 void
 528 MidiRegionView::region_resized (Change what_changed)
 529 {
 530         RegionView::region_resized(what_changed);
 531
 532         if (what_changed & ARDOUR::PositionChanged) {
 533                 if (_enable_display)
 534                         redisplay_model();
 535         }
 536 }
 537
 538 void
 539 MidiRegionView::reset_width_dependent_items (double pixel_width)
 540 {
 541         RegionView::reset_width_dependent_items(pixel_width);
 542         assert(_pixel_width == pixel_width);
 543
 544         if (_enable_display)
 545                 redisplay_model();
 546 }
 547
 548 void
 549 MidiRegionView::set_y_position_and_height (double y, double h)
 550 {
 551         RegionView::set_y_position_and_height(y, h - 1);
 552
 553         if (_enable_display) {
 554
 555                 _model->read_lock();
 556
 557                 for (std::vector<CanvasMidiEvent*>::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 558                         CanvasNote* note = dynamic_cast<CanvasNote*>(*i);
 559                         if (note && note->note()) {
 560                                 if (note->note()->note() < midi_stream_view()->lowest_note() ||
 561                                    note->note()->note() > midi_stream_view()->highest_note()) {
 562                                         if (canvas_item_visible(note)) {
 563                                                 note->hide();
 564                                         }
 565                                 }
 566                                 else {
 567                                         const double y1 = midi_stream_view()->note_to_y(note->note()->note());
 568                                         const double y2 = y1 + floor(midi_stream_view()->note_height());
 569
 570                                         if (!canvas_item_visible(note)) {
 571                                                 note->show();
 572                                         }
 573
 574                                         note->hide_velocity();
 575                                         note->property_y1() = y1;
 576                                         note->property_y2() = y2;
 577                                         if(note->selected()) {
 578                                                 note->show_velocity();
 579                                 }
 580                         }
 581                 }
 582                 }
 583
 584                 _model->read_unlock();
 585         }
 586
 587         if (name_text) {
 588                 name_text->raise_to_top();
 589         }
 590 }
 591
 592 GhostRegion*
 593 MidiRegionView::add_ghost (TimeAxisView& tv)
 594 {
 595         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 596         CanvasNote* note;
 597         assert(rtv);
 598
 599         double unit_position = _region->position () / samples_per_unit;
 600         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 601         MidiGhostRegion* ghost;
 602
 603         if (mtv && mtv->midi_view()) {
 604                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 605                    this is because it's nice to have midi notes on top of the note lines and
 606                    audio waveforms under it.
 607                  */
 608                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 609         }
 610         else {
 611                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 612         }
 613
 614         ghost->set_height ();
 615         ghost->set_duration (_region->length() / samples_per_unit);
 616         ghosts.push_back (ghost);
 617
 618         for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 619                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 620                         ghost->add_note(note);
 621                 }
 622         }
 623
 624         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 625
 626         return ghost;
 627 }
 628
 629
 630 /** Begin tracking note state for successive calls to add_event
 631  */
 632 void
 633 MidiRegionView::begin_write()
 634 {
 635         assert(!_active_notes);
 636         _active_notes = new CanvasNote*[128];
 637         for (unsigned i=0; i < 128; ++i)
 638                 _active_notes[i] = NULL;
 639 }
 640
 641
 642 /** Destroy note state for add_event
 643  */
 644 void
 645 MidiRegionView::end_write()
 646 {
 647         delete[] _active_notes;
 648         _active_notes = NULL;
 649         _marked_for_selection.clear();
 650 }
 651
 652
 653 /** Resolve an active MIDI note (while recording).
 654  */
 655 void
 656 MidiRegionView::resolve_note(uint8_t note, double end_time)
 657 {
 658         if (midi_view()->note_mode() != Sustained)
 659                 return;
 660
 661         if (_active_notes && _active_notes[note]) {
 662                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)end_time);
 663                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 664                 _active_notes[note] = NULL;
 665         }
 666 }
 667
 668
 669 /** Extend active notes to rightmost edge of region (if length is changed)
 670  */
 671 void
 672 MidiRegionView::extend_active_notes()
 673 {
 674         if (!_active_notes)
 675                 return;
 676
 677         for (unsigned i=0; i < 128; ++i)
 678                 if (_active_notes[i])
 679                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 680 }
 681
 682
 683 /** Add a MIDI note to the view (with duration).
 684  *
 685  * If in sustained mode, notes with duration 0 will be considered active
 686  * notes, and resolve_note should be called when the corresponding note off
 687  * event arrives, to properly display the note.
 688  */
 689 void
 690 MidiRegionView::add_note(const boost::shared_ptr<Note> note)
 691 {
 692         assert(note->time() >= 0);
 693         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 694
 695         // dont display notes beyond the region bounds
 696         if(
 697                         note->time() - _region->start() >= _region->length() ||
 698                         note->time() <  _region->start() ||
 699                         note->note() < midi_stream_view()->lowest_note() ||
 700                         note->note() > midi_stream_view()->highest_note()
 701           ) {
 702                 return;
 703         }
 704
 705         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 706
 707         CanvasMidiEvent *event = 0;
 708
 709         const double x = trackview.editor.frame_to_pixel((nframes_t)note->time() - _region->start());
 710
 711         if (midi_view()->note_mode() == Sustained) {
 712
 713                 //cerr << "MRV::add_note sustained " << note->note() << " @ " << note->time()
 714                 //      << " .. " << note->end_time() << endl;
 715
 716                 const double y1 = midi_stream_view()->note_to_y(note->note());
 717                 const double note_endpixel =
 718                         trackview.editor.frame_to_pixel((nframes_t)note->end_time() - _region->start());
 719
 720                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 721                 ev_rect->property_x1() = x;
 722                 ev_rect->property_y1() = y1;
 723                 if (note->duration() > 0)
 724                         ev_rect->property_x2() = note_endpixel;
 725                 else
 726                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 727                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 728
 729                 if (note->duration() == 0) {
 730                         _active_notes[note->note()] = ev_rect;
 731                         /* outline all but right edge */
 732                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 733                 } else {
 734                         /* outline all edges */
 735                         ev_rect->property_outline_what() = (guint32) 0xF;
 736                 }
 737
 738                 ev_rect->show();
 739                 _events.push_back(ev_rect);
 740                 event = ev_rect;
 741
 742                 MidiGhostRegion* gr;
 743
 744                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 745                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 746                                 gr->add_note(ev_rect);
 747                         }
 748                 }
 749
 750         } else if (midi_view()->note_mode() == Percussive) {
 751
 752                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
 753                 //      << " .. " << note->end_time() << endl;
 754
 755                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 756                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 757
 758                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 759                 ev_diamond->move(x, y);
 760                 ev_diamond->show();
 761                 _events.push_back(ev_diamond);
 762                 event = ev_diamond;
 763         } else {
 764                 event = 0;
 765         }
 766
 767         if(event) {
 768                 if(_marked_for_selection.find(event->note()) != _marked_for_selection.end()) {
 769                                 note_selected(event, true);
 770                 }
 771                 event->on_channel_selection_change(last_channel_selection);
 772         }
 773 }
 774
 775 void
 776 MidiRegionView::delete_selection()
 777 {
 778         assert(_delta_command);
 779
 780         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 781                 if ((*i)->selected())
 782                         _delta_command->remove((*i)->note());
 783
 784         _selection.clear();
 785 }
 786
 787 void
 788 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev)
 789 {
 790         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 791                 if ((*i)->selected() && (*i) != ev)
 792                         (*i)->selected(false);
 793
 794         _selection.clear();
 795 }
 796
 797 void
 798 MidiRegionView::unique_select(ArdourCanvas::CanvasMidiEvent* ev)
 799 {
 800         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 801                 if ((*i) != ev)
 802                         (*i)->selected(false);
 803
 804         _selection.clear();
 805         _selection.insert(ev);
 806
 807         if ( ! ev->selected())
 808                 ev->selected(true);
 809 }
 810
 811 void
 812 MidiRegionView::note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 813 {
 814         if ( ! add)
 815                 clear_selection_except(ev);
 816
 817         _selection.insert(ev);
 818
 819         if ( ! ev->selected())
 820                 ev->selected(true);
 821 }
 822
 823
 824 void
 825 MidiRegionView::note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 826 {
 827         if ( ! add)
 828                 clear_selection_except(ev);
 829
 830         _selection.erase(ev);
 831
 832         if (ev->selected())
 833                 ev->selected(false);
 834 }
 835
 836
 837 void
 838 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 839 {
 840         const double last_y = std::min(y1, y2);
 841         const double y      = std::max(y1, y2);
 842
 843         // FIXME: so, so, so much slower than this should be
 844
 845         if (x1 < x2) {
 846                 for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 847                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 848                                 (*i)->selected(true);
 849                                 _selection.insert(*i);
 850                         } else {
 851                                 (*i)->selected(false);
 852                                 _selection.erase(*i);
 853                         }
 854                 }
 855         } else {
 856                 for (std::vector<CanvasMidiEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 857                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 858                                 (*i)->selected(true);
 859                                 _selection.insert(*i);
 860                         } else {
 861                                 (*i)->selected(false);
 862                                 _selection.erase(*i);
 863                         }
 864                 }
 865         }
 866 }
 867
 868
 869 void
 870 MidiRegionView::move_selection(double dx, double dy)
 871 {
 872         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 873                 (*i)->move_event(dx, dy);
 874 }
 875
 876
 877 void
 878 MidiRegionView::note_dropped(CanvasMidiEvent* ev, double dt, uint8_t dnote)
 879 {
 880         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
 881         if (_selection.find(ev) != _selection.end()) {
 882                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
 883                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
 884                 uint8_t highest_note_difference = 0;
 885
 886                 // find highest and lowest notes first
 887                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 888                         Selection::iterator next = i;
 889                         ++next;
 890
 891                         uint8_t pitch = (*i)->note()->note();
 892                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
 893                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
 894
 895                         i = next;
 896                 }
 897
 898                 /*
 899                 cerr << "dnote: " << (int) dnote << endl;
 900                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
 901                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
 902                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
 903                      << int(highest_note_in_selection) << endl;
 904                 cerr << "selection size: " << _selection.size() << endl;
 905                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
 906                 */
 907
 908                 // Make sure the note pitch does not exceed the MIDI standard range
 909                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
 910                         highest_note_difference = highest_note_in_selection - 127;
 911                 }
 912
 913                 start_delta_command(_("move notes"));
 914
 915                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 916                         Selection::iterator next = i;
 917                         ++next;
 918
 919                         const boost::shared_ptr<Note> copy(new Note(*(*i)->note().get()));
 920
 921                         // we need to snap here again in nframes_t in order to be sample accurate
 922                         double new_note_time = (*i)->note()->time();
 923                         new_note_time +=  dt;
 924
 925                         // keep notes inside region if dragged beyond left region bound
 926                         if(new_note_time < _region->start()) {
 927                                 new_note_time = _region->start();
 928                         }
 929
 930                         // since note time is region-absolute but snap_to_frame expects position-relative
 931                         // time we have to coordinate transform back and forth here.
 932                         new_note_time = snap_to_frame(nframes_t(new_note_time) - _region->start()) + _region->start();
 933
 934                         copy->set_time(new_note_time);
 935
 936                         uint8_t original_pitch = (*i)->note()->note();
 937                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
 938
 939                         // keep notes in standard midi range
 940                         clamp_0_to_127(new_pitch);
 941
 942                         //notes which are dragged beyond the standard midi range snap back to their original place
 943                         if((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
 944                                 new_pitch = original_pitch;
 945                         }
 946
 947                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
 948                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
 949
 950                         copy->set_note(new_pitch);
 951
 952                         command_remove_note(*i);
 953                         command_add_note(copy);
 954
 955                         _marked_for_selection.insert(copy);
 956                         i = next;
 957                 }
 958                 apply_command();
 959
 960                 // care about notes being moved beyond the upper/lower bounds on the canvas
 961                 if(lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
 962                    highest_note_in_selection > midi_stream_view()->highest_note()
 963                 ) {
 964                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
 965         }
 966 }
 967 }
 968
 969 nframes_t
 970 MidiRegionView::snap_to_frame(double x)
 971 {
 972         PublicEditor &editor = trackview.editor;
 973         // x is region relative
 974         // convert x to global frame
 975         nframes_t frame = editor.pixel_to_frame(x) + _region->position();
 976         editor.snap_to(frame);
 977         // convert event_frame back to local coordinates relative to position
 978         frame -= _region->position();
 979         return frame;
 980 }
 981
 982 nframes_t
 983 MidiRegionView::snap_to_frame(nframes_t x)
 984 {
 985         PublicEditor &editor = trackview.editor;
 986         // x is region relative
 987         // convert x to global frame
 988         nframes_t frame = x + _region->position();
 989         editor.snap_to(frame);
 990         // convert event_frame back to local coordinates relative to position
 991         frame -= _region->position();
 992         return frame;
 993 }
 994
 995 double
 996 MidiRegionView::snap_to_pixel(double x)
 997 {
 998         return (double) trackview.editor.frame_to_pixel(snap_to_frame(x));
 999 }
1000
1001 double
1002 MidiRegionView::get_position_pixels(void)
1003 {
1004         nframes_t  region_frame  = get_position();
1005         return trackview.editor.frame_to_pixel(region_frame);
1006 }
1007
1008 void
1009 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1010 {
1011         _resize_data.clear();
1012
1013         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1014                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1015
1016                 // only insert CanvasNotes into the map
1017                 if(note) {
1018                         NoteResizeData *resize_data = new NoteResizeData();
1019                         resize_data->canvas_note = note;
1020
1021                         // create a new SimpleRect from the note which will be the resize preview
1022                         SimpleRect *resize_rect =
1023                                 new SimpleRect(
1024                                                 *group,
1025                                                 note->x1(),
1026                                                 note->y1(),
1027                                                 note->x2(),
1028                                                 note->y2());
1029
1030                         // calculate the colors: get the color settings
1031                         uint fill_color =
1032                                 UINT_RGBA_CHANGE_A(
1033                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(),
1034                                                 128);
1035
1036                         // make the resize preview notes more transparent and bright
1037                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1038
1039                         // calculate color based on note velocity
1040                         resize_rect->property_fill_color_rgba() =
1041                                 UINT_INTERPOLATE(
1042                                         note_fill_color(note->note()->velocity()),
1043                                         fill_color,
1044                                         0.85);
1045
1046                         resize_rect->property_outline_color_rgba() =
1047                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
1048
1049                         resize_data->resize_rect = resize_rect;
1050
1051                         if(note_end == CanvasNote::NOTE_ON) {
1052                                 resize_data->current_x = note->x1();
1053                         } else { // NOTE_OFF
1054                                 resize_data->current_x = note->x2();
1055                         }
1056
1057                         _resize_data.push_back(resize_data);
1058                 }
1059         }
1060 }
1061
1062 void
1063 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1064 {
1065         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1066                 SimpleRect     *resize_rect = (*i)->resize_rect;
1067                 CanvasNote     *canvas_note = (*i)->canvas_note;
1068
1069                 const double region_start = get_position_pixels();
1070
1071                 if(relative) {
1072                         (*i)->current_x = (*i)->current_x + x;
1073                 } else {
1074                         // x is in track relative, transform it to region relative
1075                         (*i)->current_x = x - region_start;
1076                 }
1077
1078                 double current_x = (*i)->current_x;
1079
1080                 if(note_end == CanvasNote::NOTE_ON) {
1081                         resize_rect->property_x1() = snap_to_pixel(current_x);
1082                         resize_rect->property_x2() = canvas_note->x2();
1083                 } else {
1084                         resize_rect->property_x2() = snap_to_pixel(current_x);
1085                         resize_rect->property_x1() = canvas_note->x1();
1086                 }
1087         }
1088 }
1089
1090 void
1091 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1092 {
1093         start_delta_command(_("resize notes"));
1094
1095         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1096                 CanvasNote *canvas_note = (*i)->canvas_note;
1097                 SimpleRect *resize_rect = (*i)->resize_rect;
1098                 double      current_x   = (*i)->current_x;
1099                 const double position = get_position_pixels();
1100
1101                 if(!relative) {
1102                         // event_x is in track relative, transform it to region relative
1103                         current_x = event_x - position;
1104                 }
1105
1106                 // because snapping works on world coordinates we have to transform current_x
1107                 // to world coordinates before snapping and transform it back afterwards
1108                 nframes_t current_frame = snap_to_frame(current_x);
1109                 // transform to region start relative
1110                 current_frame += _region->start();
1111
1112                 const boost::shared_ptr<Note> copy(new Note(*(canvas_note->note().get())));
1113
1114                 // resize beginning of note
1115                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1116                         command_remove_note(canvas_note);
1117                         copy->on_event().time() = current_frame;
1118                         command_add_note(copy);
1119                         _marked_for_selection.insert(copy);
1120                 }
1121                 // resize end of note
1122                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1123                         command_remove_note(canvas_note);
1124                         command_remove_note(canvas_note);
1125                         copy->off_event().time() = current_frame;
1126                         command_add_note(copy);
1127                         _marked_for_selection.insert(copy);
1128                 }
1129
1130                 delete resize_rect;
1131                 delete (*i);
1132         }
1133
1134         _resize_data.clear();
1135         apply_command();
1136 }
1137
1138
1139 void
1140 MidiRegionView::change_velocity(uint8_t velocity, bool relative)
1141 {
1142         start_delta_command(_("change velocity"));
1143         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1144                 Selection::iterator next = i;
1145                 ++next;
1146
1147                 CanvasMidiEvent *event = *i;
1148                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1149
1150                 if(relative) {
1151                         uint8_t new_velocity = copy->velocity() + velocity;
1152                         clamp_0_to_127(new_velocity);
1153
1154                         copy->set_velocity(new_velocity);
1155                 } else { // absolute
1156                         copy->set_velocity(velocity);
1157                 }
1158
1159                 command_remove_note(event);
1160                 command_add_note(copy);
1161
1162                 _marked_for_selection.insert(copy);
1163                 i = next;
1164         }
1165
1166         // dont keep notes selected if tweaking a single note
1167         if(_marked_for_selection.size() == 1) {
1168                 _marked_for_selection.clear();
1169         }
1170
1171         apply_command();
1172 }
1173
1174 void
1175 MidiRegionView::change_channel(uint8_t channel)
1176 {
1177         start_delta_command(_("change channel"));
1178         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1179                 Selection::iterator next = i;
1180                 ++next;
1181
1182                 CanvasMidiEvent *event = *i;
1183                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1184
1185                 copy->set_channel(channel);
1186
1187                 command_remove_note(event);
1188                 command_add_note(copy);
1189
1190                 _marked_for_selection.insert(copy);
1191                 i = next;
1192         }
1193
1194         // dont keep notes selected if tweaking a single note
1195         if(_marked_for_selection.size() == 1) {
1196                 _marked_for_selection.clear();
1197         }
1198
1199         apply_command();
1200 }
1201
1202
1203 void
1204 MidiRegionView::note_entered(ArdourCanvas::CanvasMidiEvent* ev)
1205 {
1206         if (ev->note() && _mouse_state == EraseTouchDragging) {
1207                 start_delta_command(_("note entered"));
1208                 ev->selected(true);
1209                 _delta_command->remove(ev->note());
1210         } else if (_mouse_state == SelectTouchDragging) {
1211                 note_selected(ev, true);
1212         }
1213 }
1214
1215
1216 void
1217 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1218 {
1219         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1220         if (msrc)
1221                 display_model(msrc->model());
1222 }
1223
1224 void
1225 MidiRegionView::set_frame_color()
1226 {
1227         if (frame) {
1228                 if (_selected && should_show_selection) {
1229                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1230                 } else {
1231                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1232                 }
1233         }
1234 }
1235
1236 void
1237 MidiRegionView::midi_channel_selection_changed(uint16_t selection)
1238 {
1239         for(std::vector<ArdourCanvas::CanvasMidiEvent*>::iterator i = _events.begin();
1240                 i != _events.end();
1241                 ++i) {
1242                 (*i)->on_channel_selection_change(selection);
1243         }
1244         last_channel_selection = selection;
1245 }