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         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 235         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 236         const double roll_height = trackview.height - footer_height;
 237
 238         get_canvas_group()->w2i(x, y);
 239
 240         double note = floor((roll_height - y) / roll_height * (double)note_range) + view->lowest_note();
 241         assert(note >= 0.0);
 242         assert(note <= 127.0);
 243
 244         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 245         assert(stamp >= 0);
 246         //assert(stamp <= _region->length());
 247
 248         const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 249         const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 250         double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 251
 252         // Add a 1 beat long note (for now)
 253         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 254
 255         view->update_bounds(new_note.note());
 256
 257         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 258         cmd->add(new_note);
 259         _model->apply_command(cmd);
 260
 261         //add_note(new_note);
 262 }
 263
 264
 265 void
 266 MidiRegionView::clear_events()
 267 {
 268         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 269                 delete *i;
 270
 271         _events.clear();
 272 }
 273
 274
 275 void
 276 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 277 {
 278         _model = model;
 279
 280         if (_enable_display)
 281                 redisplay_model();
 282 }
 283
 284
 285 void
 286 MidiRegionView::redisplay_model()
 287 {
 288         clear_events();
 289
 290         if (_model) {
 291                 begin_write();
 292
 293                 for (size_t i=0; i < _model->n_notes(); ++i)
 294                         add_note(_model->note_at(i));
 295
 296                 end_write();
 297         } else {
 298                 warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
 299         }
 300 }
 301
 302
 303 MidiRegionView::~MidiRegionView ()
 304 {
 305         in_destructor = true;
 306         end_write();
 307
 308         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 309 }
 310
 311
 312 void
 313 MidiRegionView::region_resized (Change what_changed)
 314 {
 315         RegionView::region_resized(what_changed);
 316
 317         if (what_changed & ARDOUR::PositionChanged) {
 318
 319                 if (_enable_display)
 320                         redisplay_model();
 321
 322         } else if (what_changed & Change (StartChanged)) {
 323
 324                 //cerr << "MIDI RV START CHANGED" << endl;
 325
 326         } else if (what_changed & Change (LengthChanged)) {
 327
 328                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 329
 330         }
 331 }
 332
 333 void
 334 MidiRegionView::reset_width_dependent_items (double pixel_width)
 335 {
 336         RegionView::reset_width_dependent_items(pixel_width);
 337         assert(_pixel_width == pixel_width);
 338
 339         if (_enable_display)
 340                 redisplay_model();
 341 }
 342
 343 void
 344 MidiRegionView::set_y_position_and_height (double y, double h)
 345 {
 346         RegionView::set_y_position_and_height(y, h - 1);
 347
 348         if (_enable_display)
 349                 redisplay_model();
 350
 351         if (name_text) {
 352                 name_text->raise_to_top();
 353         }
 354 }
 355
 356 void
 357 MidiRegionView::show_region_editor ()
 358 {
 359         cerr << "No MIDI region editor." << endl;
 360 }
 361
 362 GhostRegion*
 363 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 364 {
 365         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 366         assert(rtv);
 367
 368         double unit_position = _region->position () / samples_per_unit;
 369         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 370
 371         ghost->set_height ();
 372         ghost->set_duration (_region->length() / samples_per_unit);
 373         ghosts.push_back (ghost);
 374
 375         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 376
 377         return ghost;
 378 }
 379
 380
 381 /** Begin tracking note state for successive calls to add_event
 382  */
 383 void
 384 MidiRegionView::begin_write()
 385 {
 386         _active_notes = new CanvasNote*[128];
 387         for (unsigned i=0; i < 128; ++i)
 388                 _active_notes[i] = NULL;
 389 }
 390
 391
 392 /** Destroy note state for add_event
 393  */
 394 void
 395 MidiRegionView::end_write()
 396 {
 397         delete[] _active_notes;
 398         _active_notes = NULL;
 399 }
 400
 401
 402 /** Add a MIDI event.
 403  *
 404  * This is used while recording, and handles displaying still-unresolved notes.
 405  * Displaying an existing model is simpler, and done with add_note.
 406  */
 407 void
 408 MidiRegionView::add_event (const MidiEvent& ev)
 409 {
 410         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 411         for (size_t i=0; i < ev.size; ++i) {
 412                 printf("%X ", ev.buffer[i]);
 413         }
 414         printf("\n\n");*/
 415
 416         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 417
 418         if (midi_view()->note_mode() == Sustained) {
 419                 if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 420                         const Byte& note = ev.buffer()[1];
 421                         const double y1 = note_y(note);
 422
 423                         CanvasNote* ev_rect = new CanvasNote(*this, *group);
 424                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 425                                         (nframes_t)ev.time());
 426                         ev_rect->property_y1() = y1;
 427                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 428                                         _region->length());
 429                         ev_rect->property_y2() = y1 + note_height();
 430                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 431                         /* outline all but right edge */
 432                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 433                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 434
 435                         ev_rect->raise_to_top();
 436
 437                         _events.push_back(ev_rect);
 438                         if (_active_notes)
 439                                 _active_notes[note] = ev_rect;
 440
 441                 } else if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 442                         const Byte& note = ev.buffer()[1];
 443                         if (_active_notes && _active_notes[note]) {
 444                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 445                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 446                                 _active_notes[note] = NULL;
 447                         }
 448                 }
 449
 450         } else if (midi_view()->note_mode() == Percussive) {
 451                 const Byte& note = ev.buffer()[1];
 452                 const double diamond_size = std::min(note_height(), 5.0);
 453                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
 454                 const double y = note_y(note) + (diamond_size / 2.0);
 455
 456                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 457                 ev_diamond->move(x, y);
 458                 ev_diamond->show();
 459                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 460                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 461
 462                 _events.push_back(ev_diamond);
 463         }
 464 }
 465
 466
 467 /** Extend active notes to rightmost edge of region (if length is changed)
 468  */
 469 void
 470 MidiRegionView::extend_active_notes()
 471 {
 472         if (!_active_notes)
 473                 return;
 474
 475         for (unsigned i=0; i < 128; ++i)
 476                 if (_active_notes[i])
 477                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 478 }
 479
 480
 481 /** Add a MIDI note to the view (with duration).
 482  *
 483  * This does no 'realtime' note resolution, notes from a MidiModel have a
 484  * duration so they can be drawn in full immediately.
 485  */
 486 void
 487 MidiRegionView::add_note (const MidiModel::Note& note)
 488 {
 489         assert(note.time() >= 0);
 490         assert(note.time() < _region->length());
 491         //assert(note.time() + note.duration < _region->length());
 492
 493         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 494         MidiStreamView* const view = mtv->midi_view();
 495         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 496
 497         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 498         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 499         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 500         const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5);
 501         const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
 502         const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity());
 503         const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
 504
 505         //printf("Range: %d\n", note_range);
 506         //printf("Event, time = %f, note = %d\n", note.time(), note.note());
 507
 508
 509         if (mtv->note_mode() == Sustained) {
 510                 const double y1 = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 511                         - footer_height - 3.0;
 512
 513                 ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
 514                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
 515                 ev_rect->property_y1() = y1;
 516                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 517                 ev_rect->property_y2() = y1 + ceil(pixel_range);
 518
 519                 ev_rect->property_fill_color_rgba() = fill;
 520                 ev_rect->property_outline_color_rgba() = outline;
 521                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 522
 523                 ev_rect->show();
 524                 _events.push_back(ev_rect);
 525
 526         } else if (mtv->note_mode() == Percussive) {
 527                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
 528                 const double y = trackview.height - (pixel_range * (note.note() - view->lowest_note() + 1))
 529                         - footer_height - 3.0;
 530
 531                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, std::min(pixel_range, 5.0), &note);
 532                 ev_diamond->move(x, y);
 533                 ev_diamond->show();
 534                 ev_diamond->property_fill_color_rgba() = fill;
 535                 ev_diamond->property_outline_color_rgba() = outline;
 536                 _events.push_back(ev_diamond);
 537         }
 538 }
 539
 540