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         , _command_mode(None)
  65 {
  66 }
  67
  68 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  69                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  70         : RegionView (parent, tv, r, spu, basic_color, visibility)
  71         , _active_notes(0)
  72         , _command_mode(None)
  73 {
  74 }
  75
  76 void
  77 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  78 {
  79         _model = midi_region()->midi_source(0)->model();
  80         _enable_display = false;
  81
  82         RegionView::init(basic_color, false);
  83
  84         compute_colors (basic_color);
  85
  86         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  87
  88         set_y_position_and_height (0, trackview.height);
  89
  90         region_muted ();
  91         region_resized (BoundsChanged);
  92         region_locked ();
  93
  94         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
  95
  96         set_colors ();
  97
  98         _enable_display = true;
  99
 100         if (_model) {
 101                 if (wfd) {
 102                         redisplay_model();
 103                 }
 104                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 105         }
 106
 107         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 108
 109 }
 110
 111 bool
 112 MidiRegionView::canvas_event(GdkEvent* ev)
 113 {
 114         enum State { None, Pressed, Dragging };
 115         static int press_button = 0;
 116         static State _state;
 117
 118         static double last_x, last_y;
 119         double event_x, event_y;
 120
 121         static ArdourCanvas::SimpleRect* select_rect = NULL;
 122
 123         if (trackview.editor.current_mouse_mode() != MouseNote)
 124                 return false;
 125
 126         switch (ev->type) {
 127         case GDK_KEY_PRESS:
 128                 if (ev->key.keyval == GDK_Delete)
 129                         start_remove_command();
 130                 break;
 131
 132         case GDK_KEY_RELEASE:
 133                 if (_command_mode == Remove && ev->key.keyval == GDK_Delete)
 134                         apply_command();
 135                 break;
 136
 137         case GDK_BUTTON_PRESS:
 138                 //group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
 139                 _state = Pressed;
 140                 press_button = ev->button.button;
 141                 cerr << "PRESSED: " << press_button << endl;
 142                 return true;
 143
 144         case GDK_MOTION_NOTIFY:
 145                 event_x = ev->motion.x;
 146                 event_y = ev->motion.y;
 147                 group->w2i(event_x, event_y);
 148
 149                 switch (_state) {
 150                 case Pressed: // Drag start
 151                         cerr << "PRESSED MOTION: " << press_button << endl;
 152                         if (press_button == 1) { // Select rect start
 153                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 154                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 155                                 _state = Dragging;
 156                                 last_x = event_x;
 157                                 last_y = event_y;
 158
 159                                 select_rect = new ArdourCanvas::SimpleRect(*group);
 160                                 select_rect->property_x1() = event_x;
 161                                 select_rect->property_y1() = event_y;
 162                                 select_rect->property_x2() = event_x;
 163                                 select_rect->property_y2() = event_y;
 164                                 select_rect->property_outline_color_rgba() = 0xFF000099;
 165                                 select_rect->property_fill_color_rgba() = 0xFFDDDD33;
 166
 167                                 return true;
 168                         }
 169                         _state = Dragging;
 170                         break;
 171
 172                 case Dragging: // Select rect motion
 173                         if (ev->motion.is_hint) {
 174                                 int t_x;
 175                                 int t_y;
 176                                 GdkModifierType state;
 177                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 178                                 event_x = t_x;
 179                                 event_y = t_y;
 180                         }
 181
 182                         if (select_rect) {
 183                                 select_rect->property_x2() = event_x;
 184                                 select_rect->property_y2() = event_y;
 185                         }
 186
 187                         last_x = event_x;
 188                         last_y = event_y;
 189
 190                         return true;
 191                 default:
 192                         _state = None;
 193                         break;
 194                 }
 195                 break;
 196
 197         case GDK_BUTTON_RELEASE:
 198                 group->ungrab(ev->button.time);
 199                 switch (_state) {
 200                 case Pressed: // Clicked
 201                         if (ev->button.button == 1)
 202                                 create_note_at(ev->button.x, ev->button.y);
 203                         _state = None;
 204                         return true;
 205                 case Dragging: // Select rect done
 206                         _state = None;
 207                         delete select_rect;
 208                         select_rect = NULL;
 209                         return true;
 210                 default:
 211                         break;
 212                 }
 213
 214         default:
 215                 break;
 216         }
 217
 218         return false;
 219 }
 220
 221
 222 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 223 void
 224 MidiRegionView::create_note_at(double x, double y)
 225 {
 226         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 227         MidiStreamView* const view = mtv->midi_view();
 228
 229         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 230         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 231         const double roll_height = trackview.height - footer_height;
 232
 233         get_canvas_group()->w2i(x, y);
 234
 235         double note = floor((roll_height - y) / roll_height * (double)note_range) + view->lowest_note();
 236         assert(note >= 0.0);
 237         assert(note <= 127.0);
 238
 239         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 240         assert(stamp >= 0);
 241         //assert(stamp <= _region->length());
 242
 243         const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 244         const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 245         double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 246
 247         // Add a 1 beat long note (for now)
 248         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 249
 250         view->update_bounds(new_note.note());
 251
 252         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 253         cmd->add(new_note);
 254         _model->apply_command(cmd);
 255
 256         //add_note(new_note);
 257 }
 258
 259
 260 void
 261 MidiRegionView::clear_events()
 262 {
 263         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 264                 delete *i;
 265
 266         _events.clear();
 267 }
 268
 269
 270 void
 271 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 272 {
 273         _model = model;
 274
 275         if (_enable_display)
 276                 redisplay_model();
 277 }
 278
 279
 280 void
 281 MidiRegionView::redisplay_model()
 282 {
 283         clear_events();
 284
 285         if (_model) {
 286                 begin_write();
 287
 288                 for (size_t i=0; i < _model->n_notes(); ++i)
 289                         add_note(_model->note_at(i));
 290
 291                 end_write();
 292         } else {
 293                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 294         }
 295 }
 296
 297
 298 MidiRegionView::~MidiRegionView ()
 299 {
 300         in_destructor = true;
 301         end_write();
 302
 303         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 304 }
 305
 306 boost::shared_ptr<ARDOUR::MidiRegion>
 307 MidiRegionView::midi_region() const
 308 {
 309         // "Guaranteed" to succeed...
 310         return boost::dynamic_pointer_cast<MidiRegion>(_region);
 311 }
 312
 313 void
 314 MidiRegionView::region_resized (Change what_changed)
 315 {
 316         RegionView::region_resized(what_changed);
 317
 318         if (what_changed & ARDOUR::PositionChanged) {
 319
 320                 if (_enable_display)
 321                         redisplay_model();
 322
 323         } else if (what_changed & Change (StartChanged)) {
 324
 325                 //cerr << "MIDI RV START CHANGED" << endl;
 326
 327         } else if (what_changed & Change (LengthChanged)) {
 328
 329                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 330
 331         }
 332 }
 333
 334 void
 335 MidiRegionView::reset_width_dependent_items (double pixel_width)
 336 {
 337         RegionView::reset_width_dependent_items(pixel_width);
 338         assert(_pixel_width == pixel_width);
 339
 340         if (_enable_display)
 341                 redisplay_model();
 342 }
 343
 344 void
 345 MidiRegionView::set_y_position_and_height (double y, double h)
 346 {
 347         RegionView::set_y_position_and_height(y, h - 1);
 348
 349         if (_enable_display)
 350                 redisplay_model();
 351
 352         if (name_text) {
 353                 name_text->raise_to_top();
 354         }
 355 }
 356
 357 void
 358 MidiRegionView::show_region_editor ()
 359 {
 360         cerr << "No MIDI region editor." << endl;
 361 }
 362
 363 GhostRegion*
 364 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 365 {
 366         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 367         assert(rtv);
 368
 369         double unit_position = _region->position () / samples_per_unit;
 370         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 371
 372         ghost->set_height ();
 373         ghost->set_duration (_region->length() / samples_per_unit);
 374         ghosts.push_back (ghost);
 375
 376         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 377
 378         return ghost;
 379 }
 380
 381
 382 /** Begin tracking note state for successive calls to add_event
 383  */
 384 void
 385 MidiRegionView::begin_write()
 386 {
 387         _active_notes = new CanvasNote*[128];
 388         for (unsigned i=0; i < 128; ++i)
 389                 _active_notes[i] = NULL;
 390 }
 391
 392
 393 /** Destroy note state for add_event
 394  */
 395 void
 396 MidiRegionView::end_write()
 397 {
 398         delete[] _active_notes;
 399         _active_notes = NULL;
 400 }
 401
 402
 403 /** Add a MIDI event.
 404  *
 405  * This is used while recording, and handles displaying still-unresolved notes.
 406  * Displaying an existing model is simpler, and done with add_note.
 407  */
 408 void
 409 MidiRegionView::add_event (const MidiEvent& ev)
 410 {
 411         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 412         for (size_t i=0; i < ev.size; ++i) {
 413                 printf("%X ", ev.buffer[i]);
 414         }
 415         printf("\n\n");*/
 416
 417         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 418         MidiStreamView* const view = mtv->midi_view();
 419         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 420
 421         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 422         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 423         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 424
 425         if (mtv->note_mode() == Sustained) {
 426                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 427                         const Byte& note = ev.buffer()[1];
 428                         const double y1 = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 429                                 - footer_height - 3.0;
 430
 431                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 432                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 433                                         (nframes_t)ev.time());
 434                         ev_rect->property_y1() = y1;
 435                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 436                                         _region->length());
 437                         ev_rect->property_y2() = y1 + ceil(pixel_range);
 438                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 439                         /* outline all but right edge */
 440                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 441                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 442
 443                         ev_rect->raise_to_top();
 444
 445                         _events.push_back(ev_rect);
 446                         if (_active_notes)
 447                                 _active_notes[note] = ev_rect;
 448
 449                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 450                         const Byte& note = ev.buffer()[1];
 451                         if (_active_notes && _active_notes[note]) {
 452                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 453                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 454                                 _active_notes[note] = NULL;
 455                         }
 456                 }
 457
 458         } else if (mtv->note_mode() == Percussive) {
 459                 const Byte& note = ev.buffer()[1];
 460                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 461                 const double y = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 462                         - footer_height - 3.0;
 463
 464                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, std::min(pixel_range, 5.0));
 465                 ev_diamond->move(x, y);
 466                 ev_diamond->show();
 467                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 468                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 469
 470                 _events.push_back(ev_diamond);
 471         }
 472 }
 473
 474
 475 /** Extend active notes to rightmost edge of region (if length is changed)
 476  */
 477 void
 478 MidiRegionView::extend_active_notes()
 479 {
 480         if (!_active_notes)
 481                 return;
 482
 483         for (unsigned i=0; i < 128; ++i)
 484                 if (_active_notes[i])
 485                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 486 }
 487
 488
 489 /** Add a MIDI note to the view (with duration).
 490  *
 491  * This does no 'realtime' note resolution, notes from a MidiModel have a
 492  * duration so they can be drawn in full immediately.
 493  */
 494 void
 495 MidiRegionView::add_note (const MidiModel::Note& note)
 496 {
 497         assert(note.time() >= 0);
 498         assert(note.time() < _region->length());
 499         //assert(note.time() + note.duration < _region->length());
 500
 501         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 502         MidiStreamView* const view = mtv->midi_view();
 503         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 504
 505         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 506         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 507         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 508         const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5);
 509         const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
 510         const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity());
 511         const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
 512
 513         //printf("Range: %d\n", note_range);
 514         //printf("Event, time = %f, note = %d\n", note.time(), note.note());
 515
 516
 517         if (mtv->note_mode() == Sustained) {
 518                 const double y1 = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 519                         - footer_height - 3.0;
 520
 521                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 522                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 523                 ev_rect->property_y1() = y1;
 524                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 525                 ev_rect->property_y2() = y1 + ceil(pixel_range);
 526
 527                 ev_rect->property_fill_color_rgba() = fill;
 528                 ev_rect->property_outline_color_rgba() = outline;
 529                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 530
 531                 ev_rect->show();
 532                 _events.push_back(ev_rect);
 533
 534         } else if (mtv->note_mode() == Percussive) {
 535                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 536                 const double y = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 537                         - footer_height - 3.0;
 538
 539                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, std::min(pixel_range, 5.0), &note);
 540                 ev_diamond->move(x, y);
 541                 ev_diamond->show();
 542                 ev_diamond->property_fill_color_rgba() = fill;
 543                 ev_diamond->property_outline_color_rgba() = outline;
 544                 _events.push_back(ev_diamond);
 545         }
 546 }
 547
 548