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