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