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
  52 #include "i18n.h"
  53
  54 using namespace sigc;
  55 using namespace ARDOUR;
  56 using namespace PBD;
  57 using namespace Editing;
  58 using namespace ArdourCanvas;
  59
  60 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  61                                   Gdk::Color& basic_color)
  62         : RegionView (parent, tv, r, spu, basic_color)
  63         , _default_note_length(0.0)
  64         , _active_notes(0)
  65         , _delta_command(NULL)
  66         , _command_mode(None)
  67 {
  68 }
  69
  70 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  71                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  72         : RegionView (parent, tv, r, spu, basic_color, visibility)
  73         , _default_note_length(0.0)
  74         , _active_notes(0)
  75         , _delta_command(NULL)
  76         , _command_mode(None)
  77 {
  78 }
  79
  80 void
  81 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  82 {
  83         if (wfd)
  84                 midi_region()->midi_source(0)->load_model();
  85
  86         const Meter& m = trackview.session().tempo_map().meter_at(_region->start());
  87         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->start());
  88         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
  89                         / m.beats_per_bar();
  90
  91         _model = midi_region()->midi_source(0)->model();
  92         _enable_display = false;
  93
  94         RegionView::init(basic_color, false);
  95
  96         compute_colors (basic_color);
  97
  98         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  99
 100         set_y_position_and_height (0, trackview.height);
 101
 102         region_muted ();
 103         region_resized (BoundsChanged);
 104         region_locked ();
 105
 106         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 107
 108         set_colors ();
 109
 110         _enable_display = true;
 111
 112         if (_model) {
 113                 if (wfd) {
 114                         redisplay_model();
 115                 }
 116                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 117         }
 118
 119         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 120
 121 }
 122
 123 bool
 124 MidiRegionView::canvas_event(GdkEvent* ev)
 125 {
 126         enum State { None, Pressed, SelectDragging, AddDragging };
 127         static int press_button = 0;
 128         static State _state;
 129
 130         static double drag_start_x, drag_start_y;
 131         static double last_x, last_y;
 132         double event_x, event_y;
 133
 134         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 135
 136         if (trackview.editor.current_mouse_mode() != MouseNote)
 137                 return false;
 138
 139         switch (ev->type) {
 140         case GDK_KEY_PRESS:
 141                 if (ev->key.keyval == GDK_Delete)
 142                         start_remove_command();
 143                 break;
 144
 145         case GDK_KEY_RELEASE:
 146                 if (_command_mode == Remove && ev->key.keyval == GDK_Delete)
 147                         apply_command();
 148                 break;
 149
 150         case GDK_BUTTON_PRESS:
 151                 //group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
 152                 _state = Pressed;
 153                 press_button = ev->button.button;
 154                 //cerr << "PRESSED: " << press_button << endl;
 155                 return true;
 156
 157         case GDK_MOTION_NOTIFY:
 158                 event_x = ev->motion.x;
 159                 event_y = ev->motion.y;
 160                 group->w2i(event_x, event_y);
 161
 162                 switch (_state) {
 163                 case Pressed: // Drag start
 164
 165                         if (press_button == 1 && _command_mode != Remove) { // Select rect start
 166                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 167                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 168                                 last_x = event_x;
 169                                 last_y = event_y;
 170                                 drag_start_x = event_x;
 171                                 drag_start_y = event_y;
 172
 173                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 174                                 drag_rect->property_x1() = event_x;
 175                                 drag_rect->property_y1() = event_y;
 176                                 drag_rect->property_x2() = event_x;
 177                                 drag_rect->property_y2() = event_y;
 178                                 drag_rect->property_outline_what() = 0xFF;
 179                                 drag_rect->property_outline_color_rgba()
 180                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 181                                 drag_rect->property_fill_color_rgba()
 182                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 183
 184                                 _state = SelectDragging;
 185                                 return true;
 186
 187                         } else if (press_button == 3) { // Add note drag start
 188                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 189                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 190                                 last_x = event_x;
 191                                 last_y = event_y;
 192                                 drag_start_x = event_x;
 193                                 drag_start_y = event_y;
 194
 195                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 196                                 midi_view()->editor.snap_to(event_frame);
 197
 198                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 199                                 drag_rect->property_x1() = midi_view()->editor.frame_to_pixel(event_frame);
 200
 201                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 202                                 drag_rect->property_x2() = event_x;
 203                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 204                                 drag_rect->property_outline_what() = 0xFF;
 205                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 206                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 207
 208                                 _state = AddDragging;
 209                                 return true;
 210                         }
 211
 212                         break;
 213
 214                 case SelectDragging: // Select rect motion
 215                 case AddDragging: // Add note rect motion
 216                         if (ev->motion.is_hint) {
 217                                 int t_x;
 218                                 int t_y;
 219                                 GdkModifierType state;
 220                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 221                                 event_x = t_x;
 222                                 event_y = t_y;
 223                         }
 224
 225                         if (_state == AddDragging) {
 226                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 227                                 midi_view()->editor.snap_to(event_frame);
 228                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 229                         }
 230
 231                         if (drag_rect)
 232                                 drag_rect->property_x2() = event_x;
 233
 234                         if (drag_rect && _state == SelectDragging)
 235                                 drag_rect->property_y2() = event_y;
 236
 237                         last_x = event_x;
 238                         last_y = event_y;
 239
 240                         return true;
 241                 default:
 242                         _state = None;
 243                         break;
 244                 }
 245                 break;
 246
 247         case GDK_BUTTON_RELEASE:
 248                 event_x = ev->motion.x;
 249                 event_y = ev->motion.y;
 250                 group->w2i(event_x, event_y);
 251                 group->ungrab(ev->button.time);
 252                 switch (_state) {
 253                 case Pressed: // Clicked
 254                         if (ev->button.button == 3) {
 255                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 256                                 midi_view()->editor.snap_to(event_frame);
 257                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 258                                 create_note_at(event_x, event_y, _default_note_length);
 259                         }
 260                         _state = None;
 261                         return true;
 262                 case SelectDragging: // Select drag done
 263                         _state = None;
 264                         delete drag_rect;
 265                         drag_rect = NULL;
 266                         return true;
 267                 case AddDragging: // Add drag done
 268                         _state = None;
 269                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 270                                 create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
 271                                                 trackview.editor.pixel_to_frame(
 272                                                 drag_rect->property_x2() - drag_rect->property_x1()));
 273                         }
 274
 275                         delete drag_rect;
 276                         drag_rect = NULL;
 277                         return true;
 278                 default:
 279                         break;
 280                 }
 281
 282         default:
 283                 break;
 284         }
 285
 286         return false;
 287 }
 288
 289
 290 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 291 void
 292 MidiRegionView::create_note_at(double x, double y, double dur)
 293 {
 294         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 295         MidiStreamView* const view = mtv->midi_view();
 296
 297         double note = midi_stream_view()->y_to_note(y);
 298
 299         assert(note >= 0.0);
 300         assert(note <= 127.0);
 301
 302         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 303         assert(stamp >= 0);
 304         //assert(stamp <= _region->length());
 305
 306         //const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 307         //const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 308         //double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 309
 310         // Add a 1 beat long note (for now)
 311         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 312
 313         view->update_bounds(new_note.note());
 314
 315         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 316         cmd->add(new_note);
 317         _model->apply_command(cmd);
 318
 319         //add_note(new_note);
 320 }
 321
 322
 323 void
 324 MidiRegionView::clear_events()
 325 {
 326         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 327                 delete *i;
 328
 329         _events.clear();
 330 }
 331
 332
 333 void
 334 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 335 {
 336         _model = model;
 337
 338         if (_enable_display)
 339                 redisplay_model();
 340 }
 341
 342
 343 void
 344 MidiRegionView::redisplay_model()
 345 {
 346         clear_events();
 347
 348         if (_model) {
 349                 begin_write();
 350
 351                 for (size_t i=0; i < _model->n_notes(); ++i)
 352                         add_note(_model->note_at(i));
 353
 354                 end_write();
 355         } else {
 356                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 357         }
 358 }
 359
 360
 361 MidiRegionView::~MidiRegionView ()
 362 {
 363         in_destructor = true;
 364         end_write();
 365
 366         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 367 }
 368
 369
 370 void
 371 MidiRegionView::region_resized (Change what_changed)
 372 {
 373         RegionView::region_resized(what_changed);
 374
 375         if (what_changed & ARDOUR::PositionChanged) {
 376
 377                 if (_enable_display)
 378                         redisplay_model();
 379
 380         } else if (what_changed & Change (StartChanged)) {
 381
 382                 //cerr << "MIDI RV START CHANGED" << endl;
 383
 384         } else if (what_changed & Change (LengthChanged)) {
 385
 386                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 387
 388         }
 389 }
 390
 391 void
 392 MidiRegionView::reset_width_dependent_items (double pixel_width)
 393 {
 394         RegionView::reset_width_dependent_items(pixel_width);
 395         assert(_pixel_width == pixel_width);
 396
 397         if (_enable_display)
 398                 redisplay_model();
 399 }
 400
 401 void
 402 MidiRegionView::set_y_position_and_height (double y, double h)
 403 {
 404         RegionView::set_y_position_and_height(y, h - 1);
 405
 406         if (_enable_display)
 407                 redisplay_model();
 408
 409         if (name_text) {
 410                 name_text->raise_to_top();
 411         }
 412 }
 413
 414 void
 415 MidiRegionView::show_region_editor ()
 416 {
 417         cerr << "No MIDI region editor." << endl;
 418 }
 419
 420 GhostRegion*
 421 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 422 {
 423         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 424         assert(rtv);
 425
 426         double unit_position = _region->position () / samples_per_unit;
 427         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 428
 429         ghost->set_height ();
 430         ghost->set_duration (_region->length() / samples_per_unit);
 431         ghosts.push_back (ghost);
 432
 433         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 434
 435         return ghost;
 436 }
 437
 438
 439 /** Begin tracking note state for successive calls to add_event
 440  */
 441 void
 442 MidiRegionView::begin_write()
 443 {
 444         _active_notes = new CanvasNote*[128];
 445         for (unsigned i=0; i < 128; ++i)
 446                 _active_notes[i] = NULL;
 447 }
 448
 449
 450 /** Destroy note state for add_event
 451  */
 452 void
 453 MidiRegionView::end_write()
 454 {
 455         delete[] _active_notes;
 456         _active_notes = NULL;
 457 }
 458
 459
 460 /** Add a MIDI event.
 461  *
 462  * This is used while recording, and handles displaying still-unresolved notes.
 463  * Displaying an existing model is simpler, and done with add_note.
 464  */
 465 void
 466 MidiRegionView::add_event (const MidiEvent& ev)
 467 {
 468         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 469         for (size_t i=0; i < ev.size; ++i) {
 470                 printf("%X ", ev.buffer[i]);
 471         }
 472         printf("\n\n");*/
 473
 474         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 475
 476         if (midi_view()->note_mode() == Sustained) {
 477                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 478                         const Byte& note = ev.buffer()[1];
 479                         const double y1 = midi_stream_view()->note_to_y(note);
 480
 481                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 482                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 483                                         (nframes_t)ev.time());
 484                         ev_rect->property_y1() = y1;
 485                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 486                                         _region->length());
 487                         ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 488                         ev_rect->property_fill_color_rgba() = note_fill_color(ev.velocity());
 489                         ev_rect->property_outline_color_rgba() = note_outline_color(ev.velocity());
 490                         /* outline all but right edge */
 491                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 492
 493                         ev_rect->raise_to_top();
 494
 495                         _events.push_back(ev_rect);
 496                         if (_active_notes)
 497                                 _active_notes[note] = ev_rect;
 498
 499                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 500                         const Byte& note = ev.buffer()[1];
 501                         if (_active_notes && _active_notes[note]) {
 502                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 503                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 504                                 _active_notes[note] = NULL;
 505                         }
 506                 }
 507
 508         } else if (midi_view()->note_mode() == Percussive) {
 509                 const Byte& note = ev.buffer()[1];
 510                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 511                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 512                 const double y = midi_stream_view()->note_to_y(note) + ((diamond_size-2) / 4.0);
 513
 514                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 515                 ev_diamond->move(x, y);
 516                 ev_diamond->show();
 517                 ev_diamond->property_fill_color_rgba() = note_fill_color(ev.velocity());
 518                 ev_diamond->property_outline_color_rgba() = note_outline_color(ev.velocity());
 519
 520                 _events.push_back(ev_diamond);
 521         }
 522 }
 523
 524
 525 /** Extend active notes to rightmost edge of region (if length is changed)
 526  */
 527 void
 528 MidiRegionView::extend_active_notes()
 529 {
 530         if (!_active_notes)
 531                 return;
 532
 533         for (unsigned i=0; i < 128; ++i)
 534                 if (_active_notes[i])
 535                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 536 }
 537
 538
 539 /** Add a MIDI note to the view (with duration).
 540  *
 541  * This does no 'realtime' note resolution, notes from a MidiModel have a
 542  * duration so they can be drawn in full immediately.
 543  */
 544 void
 545 MidiRegionView::add_note (const MidiModel::Note& note)
 546 {
 547         assert(note.time() >= 0);
 548         assert(note.time() < _region->length());
 549
 550         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 551
 552         if (midi_view()->note_mode() == Sustained) {
 553                 const double y1 = midi_stream_view()->note_to_y(note.note());
 554
 555                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 556                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 557                 ev_rect->property_y1() = y1;
 558                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 559                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 560
 561                 ev_rect->property_fill_color_rgba() = note_fill_color(note.velocity());
 562                 ev_rect->property_outline_color_rgba() = note_outline_color(note.velocity());
 563                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 564
 565                 ev_rect->show();
 566                 _events.push_back(ev_rect);
 567
 568         } else if (midi_view()->note_mode() == Percussive) {
 569                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 570                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 571                 const double y = midi_stream_view()->note_to_y(note.note()) + ((diamond_size-2) / 4.0);
 572
 573                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 574                 ev_diamond->move(x, y);
 575                 ev_diamond->show();
 576                 ev_diamond->property_fill_color_rgba() = note_fill_color(note.velocity());
 577                 ev_diamond->property_outline_color_rgba() = note_outline_color(note.velocity());
 578                 _events.push_back(ev_diamond);
 579         }
 580 }
 581
 582