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         , _active_notes(0)
  64         , _delta_command(NULL)
  65         , _command_mode(None)
  66 {
  67 }
  68
  69 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  70                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  71         : RegionView (parent, tv, r, spu, basic_color, visibility)
  72         , _active_notes(0)
  73         , _delta_command(NULL)
  74         , _command_mode(None)
  75 {
  76 }
  77
  78 void
  79 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  80 {
  81         if (wfd)
  82                 midi_region()->midi_source(0)->load_model();
  83
  84         _model = midi_region()->midi_source(0)->model();
  85         _enable_display = false;
  86
  87         RegionView::init(basic_color, false);
  88
  89         compute_colors (basic_color);
  90
  91         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  92
  93         set_y_position_and_height (0, trackview.height);
  94
  95         region_muted ();
  96         region_resized (BoundsChanged);
  97         region_locked ();
  98
  99         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 100
 101         set_colors ();
 102
 103         _enable_display = true;
 104
 105         if (_model) {
 106                 if (wfd) {
 107                         redisplay_model();
 108                 }
 109                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 110         }
 111
 112         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 113
 114 }
 115
 116 bool
 117 MidiRegionView::canvas_event(GdkEvent* ev)
 118 {
 119         enum State { None, Pressed, Dragging };
 120         static int press_button = 0;
 121         static State _state;
 122
 123         static double last_x, last_y;
 124         double event_x, event_y;
 125
 126         static ArdourCanvas::SimpleRect* select_rect = NULL;
 127
 128         if (trackview.editor.current_mouse_mode() != MouseNote)
 129                 return false;
 130
 131         switch (ev->type) {
 132         case GDK_KEY_PRESS:
 133                 if (ev->key.keyval == GDK_Delete)
 134                         start_remove_command();
 135                 break;
 136
 137         case GDK_KEY_RELEASE:
 138                 if (_command_mode == Remove && ev->key.keyval == GDK_Delete)
 139                         apply_command();
 140                 break;
 141
 142         case GDK_BUTTON_PRESS:
 143                 //group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
 144                 _state = Pressed;
 145                 press_button = ev->button.button;
 146                 //cerr << "PRESSED: " << press_button << endl;
 147                 return true;
 148
 149         case GDK_MOTION_NOTIFY:
 150                 event_x = ev->motion.x;
 151                 event_y = ev->motion.y;
 152                 group->w2i(event_x, event_y);
 153
 154                 switch (_state) {
 155                 case Pressed: // Drag start
 156                         cerr << "PRESSED MOTION: " << press_button << endl;
 157                         if (press_button == 1) { // Select rect start
 158                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 159                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 160                                 _state = Dragging;
 161                                 last_x = event_x;
 162                                 last_y = event_y;
 163
 164                                 select_rect = new ArdourCanvas::SimpleRect(*group);
 165                                 select_rect->property_x1() = event_x;
 166                                 select_rect->property_y1() = event_y;
 167                                 select_rect->property_x2() = event_x;
 168                                 select_rect->property_y2() = event_y;
 169                                 select_rect->property_outline_color_rgba() = 0xFF000099;
 170                                 select_rect->property_fill_color_rgba() = 0xFFDDDD33;
 171
 172                                 return true;
 173                         }
 174                         _state = Dragging;
 175                         break;
 176
 177                 case Dragging: // Select rect motion
 178                         if (ev->motion.is_hint) {
 179                                 int t_x;
 180                                 int t_y;
 181                                 GdkModifierType state;
 182                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 183                                 event_x = t_x;
 184                                 event_y = t_y;
 185                         }
 186
 187                         if (select_rect) {
 188                                 select_rect->property_x2() = event_x;
 189                                 select_rect->property_y2() = event_y;
 190                         }
 191
 192                         last_x = event_x;
 193                         last_y = event_y;
 194
 195                         return true;
 196                 default:
 197                         _state = None;
 198                         break;
 199                 }
 200                 break;
 201
 202         case GDK_BUTTON_RELEASE:
 203                 group->ungrab(ev->button.time);
 204                 switch (_state) {
 205                 case Pressed: // Clicked
 206                         if (ev->button.button == 1)
 207                                 create_note_at(ev->button.x, ev->button.y);
 208                         _state = None;
 209                         return true;
 210                 case Dragging: // Select rect done
 211                         _state = None;
 212                         delete select_rect;
 213                         select_rect = NULL;
 214                         return true;
 215                 default:
 216                         break;
 217                 }
 218
 219         default:
 220                 break;
 221         }
 222
 223         return false;
 224 }
 225
 226
 227 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 228 void
 229 MidiRegionView::create_note_at(double x, double y)
 230 {
 231         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 232         MidiStreamView* const view = mtv->midi_view();
 233
 234         get_canvas_group()->w2i(x, y);
 235
 236         double note = floor((contents_height() - y) / contents_height() * (double)contents_note_range())
 237                         + view->lowest_note();
 238
 239         assert(note >= 0.0);
 240         assert(note <= 127.0);
 241
 242         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 243         assert(stamp >= 0);
 244         //assert(stamp <= _region->length());
 245
 246         const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 247         const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 248         double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 249
 250         // Add a 1 beat long note (for now)
 251         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 252
 253         view->update_bounds(new_note.note());
 254
 255         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 256         cmd->add(new_note);
 257         _model->apply_command(cmd);
 258
 259         //add_note(new_note);
 260 }
 261
 262
 263 void
 264 MidiRegionView::clear_events()
 265 {
 266         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 267                 delete *i;
 268
 269         _events.clear();
 270 }
 271
 272
 273 void
 274 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 275 {
 276         _model = model;
 277
 278         if (_enable_display)
 279                 redisplay_model();
 280 }
 281
 282
 283 void
 284 MidiRegionView::redisplay_model()
 285 {
 286         clear_events();
 287
 288         if (_model) {
 289                 begin_write();
 290
 291                 for (size_t i=0; i < _model->n_notes(); ++i)
 292                         add_note(_model->note_at(i));
 293
 294                 end_write();
 295         } else {
 296                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 297         }
 298 }
 299
 300
 301 MidiRegionView::~MidiRegionView ()
 302 {
 303         in_destructor = true;
 304         end_write();
 305
 306         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 307 }
 308
 309
 310 void
 311 MidiRegionView::region_resized (Change what_changed)
 312 {
 313         RegionView::region_resized(what_changed);
 314
 315         if (what_changed & ARDOUR::PositionChanged) {
 316
 317                 if (_enable_display)
 318                         redisplay_model();
 319
 320         } else if (what_changed & Change (StartChanged)) {
 321
 322                 //cerr << "MIDI RV START CHANGED" << endl;
 323
 324         } else if (what_changed & Change (LengthChanged)) {
 325
 326                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 327
 328         }
 329 }
 330
 331 void
 332 MidiRegionView::reset_width_dependent_items (double pixel_width)
 333 {
 334         RegionView::reset_width_dependent_items(pixel_width);
 335         assert(_pixel_width == pixel_width);
 336
 337         if (_enable_display)
 338                 redisplay_model();
 339 }
 340
 341 void
 342 MidiRegionView::set_y_position_and_height (double y, double h)
 343 {
 344         RegionView::set_y_position_and_height(y, h - 1);
 345
 346         if (_enable_display)
 347                 redisplay_model();
 348
 349         if (name_text) {
 350                 name_text->raise_to_top();
 351         }
 352 }
 353
 354 void
 355 MidiRegionView::show_region_editor ()
 356 {
 357         cerr << "No MIDI region editor." << endl;
 358 }
 359
 360 GhostRegion*
 361 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 362 {
 363         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 364         assert(rtv);
 365
 366         double unit_position = _region->position () / samples_per_unit;
 367         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 368
 369         ghost->set_height ();
 370         ghost->set_duration (_region->length() / samples_per_unit);
 371         ghosts.push_back (ghost);
 372
 373         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 374
 375         return ghost;
 376 }
 377
 378
 379 /** Begin tracking note state for successive calls to add_event
 380  */
 381 void
 382 MidiRegionView::begin_write()
 383 {
 384         _active_notes = new CanvasNote*[128];
 385         for (unsigned i=0; i < 128; ++i)
 386                 _active_notes[i] = NULL;
 387 }
 388
 389
 390 /** Destroy note state for add_event
 391  */
 392 void
 393 MidiRegionView::end_write()
 394 {
 395         delete[] _active_notes;
 396         _active_notes = NULL;
 397 }
 398
 399
 400 /** Add a MIDI event.
 401  *
 402  * This is used while recording, and handles displaying still-unresolved notes.
 403  * Displaying an existing model is simpler, and done with add_note.
 404  */
 405 void
 406 MidiRegionView::add_event (const MidiEvent& ev)
 407 {
 408         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 409         for (size_t i=0; i < ev.size; ++i) {
 410                 printf("%X ", ev.buffer[i]);
 411         }
 412         printf("\n\n");*/
 413
 414         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 415
 416         if (midi_view()->note_mode() == Sustained) {
 417                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 418                         const Byte& note = ev.buffer()[1];
 419                         const double y1 = note_to_y(note);
 420
 421                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 422                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 423                                         (nframes_t)ev.time());
 424                         ev_rect->property_y1() = y1;
 425                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 426                                         _region->length());
 427                         ev_rect->property_y2() = y1 + note_height();
 428                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 429                         /* outline all but right edge */
 430                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 431                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 432
 433                         ev_rect->raise_to_top();
 434
 435                         _events.push_back(ev_rect);
 436                         if (_active_notes)
 437                                 _active_notes[note] = ev_rect;
 438
 439                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 440                         const Byte& note = ev.buffer()[1];
 441                         if (_active_notes && _active_notes[note]) {
 442                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 443                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 444                                 _active_notes[note] = NULL;
 445                         }
 446                 }
 447
 448         } else if (midi_view()->note_mode() == Percussive) {
 449                 const Byte& note = ev.buffer()[1];
 450                 const double diamond_size = std::min(note_height(), 5.0);
 451                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 452                 const double y = note_to_y(note) + (diamond_size / 2.0);
 453
 454                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 455                 ev_diamond->move(x, y);
 456                 ev_diamond->show();
 457                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 458                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 459
 460                 _events.push_back(ev_diamond);
 461         }
 462 }
 463
 464
 465 /** Extend active notes to rightmost edge of region (if length is changed)
 466  */
 467 void
 468 MidiRegionView::extend_active_notes()
 469 {
 470         if (!_active_notes)
 471                 return;
 472
 473         for (unsigned i=0; i < 128; ++i)
 474                 if (_active_notes[i])
 475                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 476 }
 477
 478
 479 /** Add a MIDI note to the view (with duration).
 480  *
 481  * This does no 'realtime' note resolution, notes from a MidiModel have a
 482  * duration so they can be drawn in full immediately.
 483  */
 484 void
 485 MidiRegionView::add_note (const MidiModel::Note& note)
 486 {
 487         assert(note.time() >= 0);
 488         assert(note.time() < _region->length());
 489         //assert(note.time() + note.duration < _region->length());
 490
 491         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 492         MidiStreamView* const view = mtv->midi_view();
 493         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 494
 495         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 496         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 497         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 498         const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5);
 499         const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
 500         const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity());
 501         const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
 502
 503         //printf("Range: %d\n", note_range);
 504         //printf("Event, time = %f, note = %d\n", note.time(), note.note());
 505
 506
 507         if (mtv->note_mode() == Sustained) {
 508                 const double y1 = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 509                         - footer_height - 3.0;
 510
 511                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 512                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 513                 ev_rect->property_y1() = y1;
 514                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 515                 ev_rect->property_y2() = y1 + ceil(pixel_range);
 516
 517                 ev_rect->property_fill_color_rgba() = fill;
 518                 ev_rect->property_outline_color_rgba() = outline;
 519                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 520
 521                 ev_rect->show();
 522                 _events.push_back(ev_rect);
 523
 524         } else if (mtv->note_mode() == Percussive) {
 525                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 526                 const double y = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 527                         - footer_height - 3.0;
 528
 529                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, std::min(pixel_range, 5.0), &note);
 530                 ev_diamond->move(x, y);
 531                 ev_diamond->show();
 532                 ev_diamond->property_fill_color_rgba() = fill;
 533                 ev_diamond->property_outline_color_rgba() = outline;
 534                 _events.push_back(ev_diamond);
 535         }
 536 }
 537
 538