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 "rgb_macros.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() = 0xFF000099;
 180                                 drag_rect->property_fill_color_rgba() = 0xFFDDDD33;
 181
 182                                 _state = SelectDragging;
 183                                 return true;
 184
 185                         } else if (press_button == 3) { // Add note drag start
 186                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 187                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 188                                 last_x = event_x;
 189                                 last_y = event_y;
 190                                 drag_start_x = event_x;
 191                                 drag_start_y = event_y;
 192
 193                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 194                                 midi_view()->editor.snap_to(event_frame);
 195
 196                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 197                                 drag_rect->property_x1() = midi_view()->editor.frame_to_pixel(event_frame);
 198
 199                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 200                                 drag_rect->property_x2() = event_x;
 201                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 202                                 drag_rect->property_outline_what() = 0xFF;
 203                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 204                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 205
 206                                 _state = AddDragging;
 207                                 return true;
 208                         }
 209
 210                         break;
 211
 212                 case SelectDragging: // Select rect motion
 213                 case AddDragging: // Add note rect motion
 214                         if (ev->motion.is_hint) {
 215                                 int t_x;
 216                                 int t_y;
 217                                 GdkModifierType state;
 218                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 219                                 event_x = t_x;
 220                                 event_y = t_y;
 221                         }
 222
 223                         if (_state == AddDragging) {
 224                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 225                                 midi_view()->editor.snap_to(event_frame);
 226                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 227                         }
 228
 229                         if (drag_rect)
 230                                 drag_rect->property_x2() = event_x;
 231
 232                         if (drag_rect && _state == SelectDragging)
 233                                 drag_rect->property_y2() = event_y;
 234
 235                         last_x = event_x;
 236                         last_y = event_y;
 237
 238                         return true;
 239                 default:
 240                         _state = None;
 241                         break;
 242                 }
 243                 break;
 244
 245         case GDK_BUTTON_RELEASE:
 246                 event_x = ev->motion.x;
 247                 event_y = ev->motion.y;
 248                 group->w2i(event_x, event_y);
 249                 group->ungrab(ev->button.time);
 250                 switch (_state) {
 251                 case Pressed: // Clicked
 252                         if (ev->button.button == 3) {
 253                                 nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
 254                                 midi_view()->editor.snap_to(event_frame);
 255                                 event_x = midi_view()->editor.frame_to_pixel(event_frame);
 256                                 create_note_at(event_x, event_y, _default_note_length);
 257                         }
 258                         _state = None;
 259                         return true;
 260                 case SelectDragging: // Select drag done
 261                         _state = None;
 262                         delete drag_rect;
 263                         drag_rect = NULL;
 264                         return true;
 265                 case AddDragging: // Add drag done
 266                         _state = None;
 267                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 268                                 create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
 269                                                 trackview.editor.pixel_to_frame(
 270                                                 drag_rect->property_x2() - drag_rect->property_x1()));
 271                         }
 272
 273                         delete drag_rect;
 274                         drag_rect = NULL;
 275                         return true;
 276                 default:
 277                         break;
 278                 }
 279
 280         default:
 281                 break;
 282         }
 283
 284         return false;
 285 }
 286
 287
 288 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 289 void
 290 MidiRegionView::create_note_at(double x, double y, double dur)
 291 {
 292         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 293         MidiStreamView* const view = mtv->midi_view();
 294
 295         double note = midi_stream_view()->y_to_note(y);
 296
 297         assert(note >= 0.0);
 298         assert(note <= 127.0);
 299
 300         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 301         assert(stamp >= 0);
 302         //assert(stamp <= _region->length());
 303
 304         //const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 305         //const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 306         //double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 307
 308         // Add a 1 beat long note (for now)
 309         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 310
 311         view->update_bounds(new_note.note());
 312
 313         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 314         cmd->add(new_note);
 315         _model->apply_command(cmd);
 316
 317         //add_note(new_note);
 318 }
 319
 320
 321 void
 322 MidiRegionView::clear_events()
 323 {
 324         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 325                 delete *i;
 326
 327         _events.clear();
 328 }
 329
 330
 331 void
 332 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 333 {
 334         _model = model;
 335
 336         if (_enable_display)
 337                 redisplay_model();
 338 }
 339
 340
 341 void
 342 MidiRegionView::redisplay_model()
 343 {
 344         clear_events();
 345
 346         if (_model) {
 347                 begin_write();
 348
 349                 for (size_t i=0; i < _model->n_notes(); ++i)
 350                         add_note(_model->note_at(i));
 351
 352                 end_write();
 353         } else {
 354                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 355         }
 356 }
 357
 358
 359 MidiRegionView::~MidiRegionView ()
 360 {
 361         in_destructor = true;
 362         end_write();
 363
 364         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 365 }
 366
 367
 368 void
 369 MidiRegionView::region_resized (Change what_changed)
 370 {
 371         RegionView::region_resized(what_changed);
 372
 373         if (what_changed & ARDOUR::PositionChanged) {
 374
 375                 if (_enable_display)
 376                         redisplay_model();
 377
 378         } else if (what_changed & Change (StartChanged)) {
 379
 380                 //cerr << "MIDI RV START CHANGED" << endl;
 381
 382         } else if (what_changed & Change (LengthChanged)) {
 383
 384                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 385
 386         }
 387 }
 388
 389 void
 390 MidiRegionView::reset_width_dependent_items (double pixel_width)
 391 {
 392         RegionView::reset_width_dependent_items(pixel_width);
 393         assert(_pixel_width == pixel_width);
 394
 395         if (_enable_display)
 396                 redisplay_model();
 397 }
 398
 399 void
 400 MidiRegionView::set_y_position_and_height (double y, double h)
 401 {
 402         RegionView::set_y_position_and_height(y, h - 1);
 403
 404         if (_enable_display)
 405                 redisplay_model();
 406
 407         if (name_text) {
 408                 name_text->raise_to_top();
 409         }
 410 }
 411
 412 void
 413 MidiRegionView::show_region_editor ()
 414 {
 415         cerr << "No MIDI region editor." << endl;
 416 }
 417
 418 GhostRegion*
 419 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 420 {
 421         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 422         assert(rtv);
 423
 424         double unit_position = _region->position () / samples_per_unit;
 425         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 426
 427         ghost->set_height ();
 428         ghost->set_duration (_region->length() / samples_per_unit);
 429         ghosts.push_back (ghost);
 430
 431         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 432
 433         return ghost;
 434 }
 435
 436
 437 /** Begin tracking note state for successive calls to add_event
 438  */
 439 void
 440 MidiRegionView::begin_write()
 441 {
 442         _active_notes = new CanvasNote*[128];
 443         for (unsigned i=0; i < 128; ++i)
 444                 _active_notes[i] = NULL;
 445 }
 446
 447
 448 /** Destroy note state for add_event
 449  */
 450 void
 451 MidiRegionView::end_write()
 452 {
 453         delete[] _active_notes;
 454         _active_notes = NULL;
 455 }
 456
 457
 458 /** Add a MIDI event.
 459  *
 460  * This is used while recording, and handles displaying still-unresolved notes.
 461  * Displaying an existing model is simpler, and done with add_note.
 462  */
 463 void
 464 MidiRegionView::add_event (const MidiEvent& ev)
 465 {
 466         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 467         for (size_t i=0; i < ev.size; ++i) {
 468                 printf("%X ", ev.buffer[i]);
 469         }
 470         printf("\n\n");*/
 471
 472         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 473
 474         if (midi_view()->note_mode() == Sustained) {
 475                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 476                         const Byte& note = ev.buffer()[1];
 477                         const double y1 = midi_stream_view()->note_to_y(note);
 478
 479                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 480                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 481                                         (nframes_t)ev.time());
 482                         ev_rect->property_y1() = y1;
 483                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 484                                         _region->length());
 485                         ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 486                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 487                         /* outline all but right edge */
 488                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 489                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 490
 491                         ev_rect->raise_to_top();
 492
 493                         _events.push_back(ev_rect);
 494                         if (_active_notes)
 495                                 _active_notes[note] = ev_rect;
 496
 497                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 498                         const Byte& note = ev.buffer()[1];
 499                         if (_active_notes && _active_notes[note]) {
 500                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 501                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 502                                 _active_notes[note] = NULL;
 503                         }
 504                 }
 505
 506         } else if (midi_view()->note_mode() == Percussive) {
 507                 const Byte& note = ev.buffer()[1];
 508                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 509                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 510                 const double y = midi_stream_view()->note_to_y(note) + ((diamond_size-2) / 4.0);
 511
 512                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 513                 ev_diamond->move(x, y);
 514                 ev_diamond->show();
 515                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 516                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 517
 518                 _events.push_back(ev_diamond);
 519         }
 520 }
 521
 522
 523 /** Extend active notes to rightmost edge of region (if length is changed)
 524  */
 525 void
 526 MidiRegionView::extend_active_notes()
 527 {
 528         if (!_active_notes)
 529                 return;
 530
 531         for (unsigned i=0; i < 128; ++i)
 532                 if (_active_notes[i])
 533                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 534 }
 535
 536
 537 /** Add a MIDI note to the view (with duration).
 538  *
 539  * This does no 'realtime' note resolution, notes from a MidiModel have a
 540  * duration so they can be drawn in full immediately.
 541  */
 542 void
 543 MidiRegionView::add_note (const MidiModel::Note& note)
 544 {
 545         assert(note.time() >= 0);
 546         assert(note.time() < _region->length());
 547         //assert(note.time() + note.duration < _region->length());
 548
 549         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 550
 551         const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5);
 552         const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
 553         const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity());
 554         const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
 555
 556         //printf("Event, time = %f, note = %d\n", note.time(), note.note());
 557
 558         if (midi_view()->note_mode() == Sustained) {
 559                 const double y1 = midi_stream_view()->note_to_y(note.note());
 560
 561                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 562                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 563                 ev_rect->property_y1() = y1;
 564                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 565                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 566
 567                 ev_rect->property_fill_color_rgba() = fill;
 568                 ev_rect->property_outline_color_rgba() = outline;
 569                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 570
 571                 ev_rect->show();
 572                 _events.push_back(ev_rect);
 573
 574         } else if (midi_view()->note_mode() == Percussive) {
 575                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 576                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 577                 const double y = midi_stream_view()->note_to_y(note.note()) + ((diamond_size-2) / 4.0);
 578
 579                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 580                 ev_diamond->move(x, y);
 581                 ev_diamond->show();
 582                 ev_diamond->property_fill_color_rgba() = fill;
 583                 ev_diamond->property_outline_color_rgba() = outline;
 584                 _events.push_back(ev_diamond);
 585         }
 586 }
 587
 588