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