gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_events.h>
  36 #include <ardour/midi_model.h>
  37
  38 #include "streamview.h"
  39 #include "midi_region_view.h"
  40 #include "midi_streamview.h"
  41 #include "midi_time_axis.h"
  42 #include "simplerect.h"
  43 #include "simpleline.h"
  44 #include "canvas-hit.h"
  45 #include "public_editor.h"
  46 #include "ghostregion.h"
  47 #include "midi_time_axis.h"
  48 #include "utils.h"
  49 #include "midi_util.h"
  50 #include "gui_thread.h"
  51 #include "keyboard.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59 using namespace ArdourCanvas;
  60
  61 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  62                                   Gdk::Color& basic_color)
  63         : RegionView (parent, tv, r, spu, basic_color)
  64         , _default_note_length(0.0)
  65         , _active_notes(0)
  66         , _delta_command(NULL)
  67         , _command_mode(None)
  68 {
  69 }
  70
  71 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  72                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  73         : RegionView (parent, tv, r, spu, basic_color, visibility)
  74         , _default_note_length(0.0)
  75         , _active_notes(0)
  76         , _delta_command(NULL)
  77         , _command_mode(None)
  78 {
  79 }
  80
  81 void
  82 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  83 {
  84         if (wfd)
  85                 midi_region()->midi_source(0)->load_model();
  86
  87         const Meter& m = trackview.session().tempo_map().meter_at(_region->start());
  88         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->start());
  89         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
  90                         / m.beats_per_bar();
  91
  92         _model = midi_region()->midi_source(0)->model();
  93         _enable_display = false;
  94
  95         RegionView::init(basic_color, false);
  96
  97         compute_colors (basic_color);
  98
  99         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 100
 101         set_y_position_and_height (0, trackview.height);
 102
 103         region_muted ();
 104         region_resized (BoundsChanged);
 105         region_locked ();
 106
 107         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 108
 109         set_colors ();
 110
 111         _enable_display = true;
 112
 113         if (_model) {
 114                 if (wfd) {
 115                         redisplay_model();
 116                 }
 117                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 118         }
 119
 120         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 121
 122 }
 123
 124 bool
 125 MidiRegionView::canvas_event(GdkEvent* ev)
 126 {
 127         enum State { None, Pressed, SelectDragging, AddDragging };
 128         static int press_button = 0;
 129         static State _state;
 130
 131         static double drag_start_x, drag_start_y;
 132         static double last_x, last_y;
 133         double event_x, event_y;
 134
 135         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 136
 137         if (trackview.editor.current_mouse_mode() != MouseNote)
 138                 return false;
 139
 140         switch (ev->type) {
 141         case GDK_KEY_PRESS:
 142                 if (ev->key.keyval == GDK_Delete)
 143                         start_remove_command();
 144                 break;
 145
 146         case GDK_KEY_RELEASE:
 147                 if (_command_mode == Remove && ev->key.keyval == GDK_Delete) {
 148                         delete_selection();
 149                         apply_command();
 150                 }
 151                 break;
 152
 153         case GDK_BUTTON_PRESS:
 154                 //group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
 155                 _state = Pressed;
 156                 press_button = ev->button.button;
 157                 //cerr << "PRESSED: " << press_button << endl;
 158                 return true;
 159
 160         case GDK_ENTER_NOTIFY:
 161                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 162                 Keyboard::magic_widget_grab_focus();
 163                 group->grab_focus();
 164                 break;
 165
 166         case GDK_MOTION_NOTIFY:
 167                 event_x = ev->motion.x;
 168                 event_y = ev->motion.y;
 169                 group->w2i(event_x, event_y);
 170
 171                 switch (_state) {
 172                 case Pressed: // Drag start
 173
 174                         if (press_button == 1 && _command_mode != Remove) { // Select rect start
 175                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 176                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 177                                 last_x = event_x;
 178                                 last_y = event_y;
 179                                 drag_start_x = event_x;
 180                                 drag_start_y = event_y;
 181
 182                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 183                                 drag_rect->property_x1() = event_x;
 184                                 drag_rect->property_y1() = event_y;
 185                                 drag_rect->property_x2() = event_x;
 186                                 drag_rect->property_y2() = event_y;
 187                                 drag_rect->property_outline_what() = 0xFF;
 188                                 drag_rect->property_outline_color_rgba()
 189                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 190                                 drag_rect->property_fill_color_rgba()
 191                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 192
 193                                 _state = SelectDragging;
 194                                 return true;
 195
 196                         } else if (press_button == 3) { // Add note drag start
 197                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 198                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 199                                 last_x = event_x;
 200                                 last_y = event_y;
 201                                 drag_start_x = event_x;
 202                                 drag_start_y = event_y;
 203
 204                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 205                                 midi_view()->editor.snap_to(event_frame);
 206
 207                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 208                                 drag_rect->property_x1() = midi_view()->editor.frame_to_pixel(event_frame);
 209
 210                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 211                                 drag_rect->property_x2() = event_x;
 212                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 213                                 drag_rect->property_outline_what() = 0xFF;
 214                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 215                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 216
 217                                 _state = AddDragging;
 218                                 return true;
 219                         }
 220
 221                         break;
 222
 223                 case SelectDragging: // Select rect motion
 224                 case AddDragging: // Add note rect motion
 225                         if (ev->motion.is_hint) {
 226                                 int t_x;
 227                                 int t_y;
 228                                 GdkModifierType state;
 229                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 230                                 event_x = t_x;
 231                                 event_y = t_y;
 232                         }
 233
 234                         if (_state == AddDragging) {
 235                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 236                                 midi_view()->editor.snap_to(event_frame);
 237                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 238                         }
 239
 240                         if (drag_rect)
 241                                 drag_rect->property_x2() = event_x;
 242
 243                         if (drag_rect && _state == SelectDragging)
 244                                 drag_rect->property_y2() = event_y;
 245
 246                         last_x = event_x;
 247                         last_y = event_y;
 248
 249                         return true;
 250                 default:
 251                         _state = None;
 252                         break;
 253                 }
 254                 break;
 255
 256         case GDK_BUTTON_RELEASE:
 257                 event_x = ev->motion.x;
 258                 event_y = ev->motion.y;
 259                 group->w2i(event_x, event_y);
 260                 group->ungrab(ev->button.time);
 261                 switch (_state) {
 262                 case Pressed: // Clicked
 263                         if (ev->button.button == 3) {
 264                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 265                                 midi_view()->editor.snap_to(event_frame);
 266                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 267                                 create_note_at(event_x, event_y, _default_note_length);
 268                         }
 269                         _state = None;
 270                         return true;
 271                 case SelectDragging: // Select drag done
 272                         _state = None;
 273                         delete drag_rect;
 274                         drag_rect = NULL;
 275                         return true;
 276                 case AddDragging: // Add drag done
 277                         _state = None;
 278                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 279                                 create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
 280                                                 trackview.editor.pixel_to_frame(
 281                                                 drag_rect->property_x2() - drag_rect->property_x1()));
 282                         }
 283
 284                         delete drag_rect;
 285                         drag_rect = NULL;
 286                         return true;
 287                 default:
 288                         break;
 289                 }
 290
 291         default:
 292                 break;
 293         }
 294
 295         return false;
 296 }
 297
 298
 299 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 300 void
 301 MidiRegionView::create_note_at(double x, double y, double dur)
 302 {
 303         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 304         MidiStreamView* const view = mtv->midi_view();
 305
 306         double note = midi_stream_view()->y_to_note(y);
 307
 308         assert(note >= 0.0);
 309         assert(note <= 127.0);
 310
 311         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 312         assert(stamp >= 0);
 313         //assert(stamp <= _region->length());
 314
 315         //const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 316         //const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 317         //double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 318
 319         // Add a 1 beat long note (for now)
 320         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 321
 322         view->update_bounds(new_note.note());
 323
 324         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 325         cmd->add(new_note);
 326         _model->apply_command(cmd);
 327
 328         //add_note(new_note);
 329 }
 330
 331
 332 void
 333 MidiRegionView::clear_events()
 334 {
 335         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 336                 delete *i;
 337
 338         _events.clear();
 339 }
 340
 341
 342 void
 343 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 344 {
 345         _model = model;
 346
 347         if (_enable_display)
 348                 redisplay_model();
 349 }
 350
 351
 352 void
 353 MidiRegionView::redisplay_model()
 354 {
 355         clear_events();
 356
 357         if (_model) {
 358                 begin_write();
 359
 360                 for (size_t i=0; i < _model->n_notes(); ++i)
 361                         add_note(_model->note_at(i));
 362
 363                 end_write();
 364         } else {
 365                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 366         }
 367 }
 368
 369
 370 MidiRegionView::~MidiRegionView ()
 371 {
 372         in_destructor = true;
 373         end_write();
 374
 375         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 376 }
 377
 378
 379 void
 380 MidiRegionView::region_resized (Change what_changed)
 381 {
 382         RegionView::region_resized(what_changed);
 383
 384         if (what_changed & ARDOUR::PositionChanged) {
 385
 386                 if (_enable_display)
 387                         redisplay_model();
 388
 389         } else if (what_changed & Change (StartChanged)) {
 390
 391                 //cerr << "MIDI RV START CHANGED" << endl;
 392
 393         } else if (what_changed & Change (LengthChanged)) {
 394
 395                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 396
 397         }
 398 }
 399
 400 void
 401 MidiRegionView::reset_width_dependent_items (double pixel_width)
 402 {
 403         RegionView::reset_width_dependent_items(pixel_width);
 404         assert(_pixel_width == pixel_width);
 405
 406         if (_enable_display)
 407                 redisplay_model();
 408 }
 409
 410 void
 411 MidiRegionView::set_y_position_and_height (double y, double h)
 412 {
 413         RegionView::set_y_position_and_height(y, h - 1);
 414
 415         if (_enable_display)
 416                 redisplay_model();
 417
 418         if (name_text) {
 419                 name_text->raise_to_top();
 420         }
 421 }
 422
 423 void
 424 MidiRegionView::show_region_editor ()
 425 {
 426         cerr << "No MIDI region editor." << endl;
 427 }
 428
 429 GhostRegion*
 430 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 431 {
 432         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 433         assert(rtv);
 434
 435         double unit_position = _region->position () / samples_per_unit;
 436         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 437
 438         ghost->set_height ();
 439         ghost->set_duration (_region->length() / samples_per_unit);
 440         ghosts.push_back (ghost);
 441
 442         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 443
 444         return ghost;
 445 }
 446
 447
 448 /** Begin tracking note state for successive calls to add_event
 449  */
 450 void
 451 MidiRegionView::begin_write()
 452 {
 453         _active_notes = new CanvasNote*[128];
 454         for (unsigned i=0; i < 128; ++i)
 455                 _active_notes[i] = NULL;
 456 }
 457
 458
 459 /** Destroy note state for add_event
 460  */
 461 void
 462 MidiRegionView::end_write()
 463 {
 464         delete[] _active_notes;
 465         _active_notes = NULL;
 466 }
 467
 468
 469 /** Add a MIDI event.
 470  *
 471  * This is used while recording, and handles displaying still-unresolved notes.
 472  * Displaying an existing model is simpler, and done with add_note.
 473  */
 474 void
 475 MidiRegionView::add_event (const MidiEvent& ev)
 476 {
 477         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 478         for (size_t i=0; i < ev.size; ++i) {
 479                 printf("%X ", ev.buffer[i]);
 480         }
 481         printf("\n\n");*/
 482
 483         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 484
 485         if (midi_view()->note_mode() == Sustained) {
 486                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 487                         const Byte& note = ev.buffer()[1];
 488                         const double y1 = midi_stream_view()->note_to_y(note);
 489
 490                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 491                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 492                                         (nframes_t)ev.time());
 493                         ev_rect->property_y1() = y1;
 494                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 495                                         _region->length());
 496                         ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 497                         ev_rect->property_fill_color_rgba() = note_fill_color(ev.velocity());
 498                         ev_rect->property_outline_color_rgba() = note_outline_color(ev.velocity());
 499                         /* outline all but right edge */
 500                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 501
 502                         ev_rect->raise_to_top();
 503
 504                         _events.push_back(ev_rect);
 505                         if (_active_notes)
 506                                 _active_notes[note] = ev_rect;
 507
 508                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 509                         const Byte& note = ev.buffer()[1];
 510                         if (_active_notes && _active_notes[note]) {
 511                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 512                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 513                                 _active_notes[note] = NULL;
 514                         }
 515                 }
 516
 517         } else if (midi_view()->note_mode() == Percussive) {
 518                 const Byte& note = ev.buffer()[1];
 519                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 520                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 521                 const double y = midi_stream_view()->note_to_y(note) + ((diamond_size-2) / 4.0);
 522
 523                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 524                 ev_diamond->move(x, y);
 525                 ev_diamond->show();
 526                 ev_diamond->property_fill_color_rgba() = note_fill_color(ev.velocity());
 527                 ev_diamond->property_outline_color_rgba() = note_outline_color(ev.velocity());
 528
 529                 _events.push_back(ev_diamond);
 530         }
 531 }
 532
 533
 534 /** Extend active notes to rightmost edge of region (if length is changed)
 535  */
 536 void
 537 MidiRegionView::extend_active_notes()
 538 {
 539         if (!_active_notes)
 540                 return;
 541
 542         for (unsigned i=0; i < 128; ++i)
 543                 if (_active_notes[i])
 544                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 545 }
 546
 547
 548 /** Add a MIDI note to the view (with duration).
 549  *
 550  * This does no 'realtime' note resolution, notes from a MidiModel have a
 551  * duration so they can be drawn in full immediately.
 552  */
 553 void
 554 MidiRegionView::add_note (const MidiModel::Note& note)
 555 {
 556         assert(note.time() >= 0);
 557         assert(note.time() < _region->length());
 558
 559         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 560
 561         if (midi_view()->note_mode() == Sustained) {
 562                 const double y1 = midi_stream_view()->note_to_y(note.note());
 563
 564                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 565                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 566                 ev_rect->property_y1() = y1;
 567                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 568                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 569
 570                 ev_rect->property_fill_color_rgba() = note_fill_color(note.velocity());
 571                 ev_rect->property_outline_color_rgba() = note_outline_color(note.velocity());
 572                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 573
 574                 ev_rect->show();
 575                 _events.push_back(ev_rect);
 576
 577         } else if (midi_view()->note_mode() == Percussive) {
 578                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 579                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 580                 const double y = midi_stream_view()->note_to_y(note.note()) + ((diamond_size-2) / 4.0);
 581
 582                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 583                 ev_diamond->move(x, y);
 584                 ev_diamond->show();
 585                 ev_diamond->property_fill_color_rgba() = note_fill_color(note.velocity());
 586                 ev_diamond->property_outline_color_rgba() = note_outline_color(note.velocity());
 587                 _events.push_back(ev_diamond);
 588         }
 589 }
 590
 591 void
 592 MidiRegionView::delete_selection()
 593 {
 594         assert(_delta_command);
 595
 596         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 597                 if ((*i)->selected())
 598                         _delta_command->remove(*(*i)->note());
 599
 600         _selection.clear();
 601 }
 602
 603 void
 604 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev)
 605 {
 606         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 607                 if ((*i)->selected() && (*i) != ev)
 608                         (*i)->selected(false);
 609
 610         _selection.clear();
 611 }
 612
 613 void
 614 MidiRegionView::unique_select(ArdourCanvas::CanvasMidiEvent* ev)
 615 {
 616         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 617                 if ((*i) != ev)
 618                         (*i)->selected(false);
 619
 620         _selection.clear();
 621         _selection.insert(ev);
 622         ev->selected(true);
 623 }
 624
 625 void
 626 MidiRegionView::note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 627 {
 628         if ( ! add)
 629                 clear_selection_except(ev);
 630
 631         _selection.insert(ev);
 632         ev->selected(true);
 633 }
 634
 635
 636 void
 637 MidiRegionView::note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add)
 638 {
 639         if ( ! add)
 640                 clear_selection_except(ev);
 641
 642         _selection.erase(ev);
 643         ev->selected(false);
 644 }
 645
 646