gtk2_ardour/midi_streamview.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20 #include <cassert>
  21 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include "ardour/midi_diskstream.h"
  28 #include "ardour/midi_playlist.h"
  29 #include "ardour/midi_region.h"
  30 #include "ardour/midi_source.h"
  31 #include "ardour/midi_track.h"
  32 #include "ardour/region_factory.h"
  33 #include "ardour/smf_source.h"
  34 #include "ardour/session.h"
  35
  36 #include "ardour_ui.h"
  37 #include "canvas-simplerect.h"
  38 #include "gui_thread.h"
  39 #include "lineset.h"
  40 #include "midi_region_view.h"
  41 #include "midi_streamview.h"
  42 #include "midi_time_axis.h"
  43 #include "midi_util.h"
  44 #include "public_editor.h"
  45 #include "region_selection.h"
  46 #include "region_view.h"
  47 #include "rgb_macros.h"
  48 #include "selection.h"
  49 #include "simplerect.h"
  50 #include "utils.h"
  51
  52 using namespace std;
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Editing;
  56
  57 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  58         : StreamView (tv)
  59         , note_range_adjustment(0.0f, 0.0f, 0.0f)
  60         , _range_dirty(false)
  61         , _range_sum_cache(-1.0)
  62         , _lowest_note(60)
  63         , _highest_note(71)
  64         , _data_note_min(60)
  65         , _data_note_max(71)
  66         , _note_lines (0)
  67 {
  68         /* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
  69         midi_underlay_group = new ArdourCanvas::Group (*_canvas_group);
  70         midi_underlay_group->lower_to_bottom();
  71
  72         /* put the note lines in the timeaxisview's group, so it
  73            can be put below ghost regions from MIDI underlays*/
  74         _note_lines = new ArdourCanvas::LineSet(*_canvas_group, ArdourCanvas::LineSet::Horizontal);
  75
  76         _note_lines->property_x1() = 0;
  77         _note_lines->property_y1() = 0;
  78         _note_lines->property_x2() = trackview().editor().frame_to_pixel (max_frames);
  79         _note_lines->property_y2() = 0;
  80
  81         _note_lines->signal_event().connect(sigc::bind(
  82                         sigc::mem_fun(_trackview.editor(), &PublicEditor::canvas_stream_view_event),
  83                         _note_lines, &_trackview));
  84
  85         _note_lines->lower_to_bottom();
  86
  87         color_handler ();
  88
  89         ColorsChanged.connect(sigc::mem_fun(*this, &MidiStreamView::color_handler));
  90
  91         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
  92         note_range_adjustment.set_value(_lowest_note);
  93
  94         note_range_adjustment.signal_value_changed().connect(
  95                         sigc::mem_fun(*this, &MidiStreamView::note_range_adjustment_changed));
  96 }
  97
  98 MidiStreamView::~MidiStreamView ()
  99 {
 100 }
 101
 102 static void
 103 veto_note_range(uint8_t& min, uint8_t& max)
 104 {
 105         /* Legal notes, thanks */
 106         clamp_to_0_127(min);
 107         clamp_to_0_127(max);
 108
 109         /* Always display at least one octave in [0, 127] */
 110         if (max == 127) {
 111                 if (min > (127 - 11)) {
 112                         min = 127 - 11;
 113                 }
 114         } else if (max < min + 11) {
 115                 uint8_t d = 11 - (max - min);
 116                 if (max + d/2 > 127) {
 117                         min -= d;
 118                 } else {
 119                         min -= d / 2;
 120                         max += d / 2;
 121                 }
 122         }
 123         assert(max - min >= 11);
 124         assert(max <= 127);
 125         assert(min <= 127);
 126 }
 127
 128 RegionView*
 129 MidiStreamView::create_region_view (boost::shared_ptr<Region> r, bool /*wfd*/, bool)
 130 {
 131         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
 132
 133         if (region == 0) {
 134                 return 0;
 135         }
 136
 137         RegionView* region_view = new MidiRegionView (_canvas_group, _trackview, region,
 138                                                       _samples_per_unit, region_color);
 139
 140         region_view->init (region_color, false);
 141
 142         return region_view;
 143 }
 144
 145 RegionView*
 146 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd, bool recording)
 147 {
 148         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
 149
 150         if (region == 0) {
 151                 return 0;
 152         }
 153
 154         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 155                 if ((*i)->region() == r) {
 156
 157                         /* great. we already have a MidiRegionView for this Region. use it again. */
 158
 159                         (*i)->set_valid (true);
 160
 161                         display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
 162
 163                         return 0;
 164                 }
 165         }
 166
 167         MidiRegionView* region_view = dynamic_cast<MidiRegionView*> (create_region_view (r, wfd, recording));
 168         if (region_view == 0) {
 169                 return 0;
 170         }
 171
 172         region_views.push_front (region_view);
 173
 174         /* display events and find note range */
 175         display_region (region_view, wfd);
 176
 177         /* catch regionview going away */
 178         region->DropReferences.connect (*this, invalidator (*this), boost::bind (&MidiStreamView::remove_region_view, this, region), gui_context());
 179
 180         RegionViewAdded (region_view);
 181
 182         return region_view;
 183 }
 184
 185 void
 186 MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
 187 {
 188         if ( ! region_view)
 189                 return;
 190
 191         region_view->enable_display(true);
 192
 193         boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 194
 195         if (load_model) {
 196                 source->load_model();
 197         }
 198
 199         _range_dirty = update_data_note_range(
 200                         source->model()->lowest_note(),
 201                         source->model()->highest_note());
 202
 203         // Display region contents
 204         region_view->set_height(height);
 205         region_view->display_model(source->model());
 206 }
 207
 208 void
 209 MidiStreamView::display_track (boost::shared_ptr<Track> tr)
 210 {
 211         StreamView::display_track (tr);
 212
 213         draw_note_lines();
 214
 215         NoteRangeChanged();
 216 }
 217
 218 void
 219 MidiStreamView::update_contents_metrics(boost::shared_ptr<Region> r)
 220 {
 221         boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(r);
 222         if (mr) {
 223                 mr->midi_source(0)->load_model();
 224                 _range_dirty = update_data_note_range(
 225                                 mr->model()->lowest_note(),
 226                                 mr->model()->highest_note());
 227         }
 228 }
 229
 230 bool
 231 MidiStreamView::update_data_note_range(uint8_t min, uint8_t max)
 232 {
 233         bool dirty = false;
 234         if (min < _data_note_min) {
 235                 _data_note_min = min;
 236                 dirty = true;
 237         }
 238         if (max > _data_note_max) {
 239                 _data_note_max = max;
 240                 dirty = true;
 241         }
 242         return dirty;
 243 }
 244
 245 void
 246 MidiStreamView::redisplay_track ()
 247 {
 248         if (!_trackview.is_midi_track()) {
 249                 return;
 250         }
 251
 252         list<RegionView*>::iterator i;
 253
 254         // Load models if necessary, and find note range of all our contents
 255         _range_dirty = false;
 256         _data_note_min = 127;
 257         _data_note_max = 0;
 258         _trackview.track()->playlist()->foreach_region(
 259                 sigc::mem_fun (*this, &StreamView::update_contents_metrics)
 260                 );
 261
 262         // No notes, use default range
 263         if (!_range_dirty) {
 264                 _data_note_min = 60;
 265                 _data_note_max = 71;
 266         }
 267
 268         // Extend visible range to show newly recorded data, if necessary
 269         _lowest_note  = std::min(_lowest_note, _data_note_min);
 270         _highest_note = std::max(_highest_note, _data_note_max);
 271
 272         veto_note_range(_lowest_note, _highest_note);
 273
 274         // Flag region views as invalid and disable drawing
 275         for (i = region_views.begin(); i != region_views.end(); ++i) {
 276                 (*i)->set_valid(false);
 277                 (*i)->enable_display(false);
 278         }
 279
 280         // Add and display region views, and flag them as valid
 281         _trackview.track()->playlist()->foreach_region(
 282                 sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 283                 );
 284
 285         // Stack regions by layer, and remove invalid regions
 286         layer_regions();
 287
 288         // Update note range (not regions which are correct) and draw note lines
 289         apply_note_range(_lowest_note, _highest_note, false);
 290 }
 291
 292
 293 void
 294 MidiStreamView::update_contents_height ()
 295 {
 296         StreamView::update_contents_height();
 297         _note_lines->property_y2() = height;
 298
 299         apply_note_range (lowest_note(), highest_note(), true);
 300 }
 301
 302 void
 303 MidiStreamView::draw_note_lines()
 304 {
 305         if (!_note_lines) {
 306                 return;
 307         }
 308
 309         double y;
 310         double prev_y = contents_height();
 311         uint32_t color;
 312
 313         _note_lines->clear();
 314
 315         if(height < 140){
 316                 return;
 317         }
 318
 319         for (int i = lowest_note(); i <= highest_note(); ++i) {
 320                 y = floor(note_to_y(i));
 321
 322                 _note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
 323
 324                 switch (i % 12) {
 325                 case 1:
 326                 case 3:
 327                 case 6:
 328                 case 8:
 329                 case 10:
 330                         color = ARDOUR_UI::config()->canvasvar_PianoRollBlack.get();
 331                         break;
 332                 default:
 333                         color = ARDOUR_UI::config()->canvasvar_PianoRollWhite.get();
 334                         break;
 335                 }
 336
 337                 if (i == highest_note()) {
 338                         _note_lines->add_line(y, prev_y - y, color);
 339                 } else {
 340                         _note_lines->add_line(y + 1.0, prev_y - y - 1.0, color);
 341                 }
 342
 343                 prev_y = y;
 344         }
 345 }
 346
 347 void
 348 MidiStreamView::set_note_range(VisibleNoteRange r)
 349 {
 350         if (r == FullRange) {
 351                 _lowest_note = 0;
 352                 _highest_note = 127;
 353         } else {
 354                 _lowest_note = _data_note_min;
 355                 _highest_note = _data_note_max;
 356         }
 357
 358         apply_note_range(_lowest_note, _highest_note, true);
 359 }
 360
 361 void
 362 MidiStreamView::apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views)
 363 {
 364         _highest_note = highest;
 365         _lowest_note = lowest;
 366
 367         int range = _highest_note - _lowest_note;
 368         int pixels_per_note = floor (height/range);
 369
 370         /* do not grow note height beyond 10 pixels */
 371         if (pixels_per_note > 10) {
 372
 373                 int available_note_range = floor ((height)/10);
 374                 int additional_notes = available_note_range - range;
 375
 376                 /* distribute additional notes to higher and lower ranges, clamp at 0 and 127 */
 377                 for (int i = 0; i < additional_notes; i++){
 378
 379                         if (i % 2 && _highest_note < 127){
 380                                 _highest_note++;
 381                         }
 382                         else if (i % 2) {
 383                                 _lowest_note--;
 384                         }
 385                         else if (_lowest_note > 0){
 386                                 _lowest_note--;
 387                         }
 388                         else {
 389                                 _highest_note++;
 390                         }
 391                 }
 392         }
 393
 394         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
 395         note_range_adjustment.set_value(_lowest_note);
 396
 397         draw_note_lines();
 398
 399         if (to_region_views) {
 400                 for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 401                         ((MidiRegionView*)(*i))->apply_note_range(_lowest_note, _highest_note);
 402                 }
 403         }
 404
 405         NoteRangeChanged();
 406 }
 407
 408 void
 409 MidiStreamView::update_note_range(uint8_t note_num)
 410 {
 411         assert(note_num <= 127);
 412         _data_note_min = min(_data_note_min, note_num);
 413         _data_note_max = max(_data_note_max, note_num);
 414 }
 415
 416 void
 417 MidiStreamView::setup_rec_box ()
 418 {
 419         // cerr << _trackview.name() << " streamview SRB\n";
 420
 421         if (_trackview.session()->transport_rolling()) {
 422
 423                 if (!rec_active &&
 424                     _trackview.session()->record_status() == Session::Recording &&
 425                     _trackview.track()->record_enabled()) {
 426
 427                         if (Config->get_show_waveforms_while_recording() && rec_regions.size() == rec_rects.size()) {
 428
 429                                 /* add a new region, but don't bother if they set show-waveforms-while-recording mid-record */
 430
 431                                 MidiRegion::SourceList sources;
 432
 433                                 rec_data_ready_connections.drop_connections ();
 434
 435                                 sources.push_back (_trackview.midi_track()->write_source());
 436
 437                                 _trackview.midi_track()->write_source()->ViewDataRangeReady.connect
 438                                         (rec_data_ready_connections,
 439                                          invalidator (*this),
 440                                          ui_bind (&MidiStreamView::rec_data_range_ready, this, _1, _2, boost::weak_ptr<Source>(_trackview.midi_track()->write_source())),
 441                                          gui_context());
 442
 443                                 // handle multi
 444
 445                                 nframes_t start = 0;
 446                                 if (rec_regions.size() > 0) {
 447                                         start = rec_regions.back().first->start()
 448                                                         + _trackview.track()->get_captured_frames(rec_regions.size()-1);
 449                                 }
 450
 451                                 PropertyList plist;
 452
 453                                 plist.add (ARDOUR::Properties::start, start);
 454                                 plist.add (ARDOUR::Properties::length, 1);
 455                                 plist.add (ARDOUR::Properties::name, string());
 456                                 plist.add (ARDOUR::Properties::layer, 0);
 457
 458                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 459                                                                       (RegionFactory::create (sources, plist, false)));
 460
 461                                 assert(region);
 462                                 region->block_property_changes ();
 463                                 region->set_position (_trackview.session()->transport_frame(), this);
 464                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 465
 466                                 // rec regions are destroyed in setup_rec_box
 467
 468                                 /* we add the region later */
 469                         }
 470
 471                         /* start a new rec box */
 472
 473                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 474                         nframes_t frame_pos = mt->current_capture_start ();
 475                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 476                         gdouble xend;
 477                         uint32_t fill_color;
 478
 479                         assert(_trackview.midi_track()->mode() == Normal);
 480
 481                         xend = xstart;
 482                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 483
 484                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
 485                         rec_rect->property_x1() = xstart;
 486                         rec_rect->property_y1() = 1.0;
 487                         rec_rect->property_x2() = xend;
 488                         rec_rect->property_y2() = (double) _trackview.current_height() - 1;
 489                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 490                         rec_rect->property_fill_color_rgba() = fill_color;
 491                         rec_rect->lower_to_bottom();
 492
 493                         RecBoxInfo recbox;
 494                         recbox.rectangle = rec_rect;
 495                         recbox.start = _trackview.session()->transport_frame();
 496                         recbox.length = 0;
 497
 498                         rec_rects.push_back (recbox);
 499
 500                         screen_update_connection.disconnect();
 501                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 502                                         sigc::mem_fun (*this, &MidiStreamView::update_rec_box));
 503                         rec_updating = true;
 504                         rec_active = true;
 505
 506                 } else if (rec_active &&
 507                            (_trackview.session()->record_status() != Session::Recording ||
 508                             !_trackview.track()->record_enabled())) {
 509                         screen_update_connection.disconnect();
 510                         rec_active = false;
 511                         rec_updating = false;
 512                 }
 513
 514         } else {
 515
 516                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 517
 518                 if (!rec_rects.empty() || !rec_regions.empty()) {
 519
 520                         /* disconnect rapid update */
 521                         screen_update_connection.disconnect();
 522                         rec_data_ready_connections.drop_connections ();
 523
 524                         rec_updating = false;
 525                         rec_active = false;
 526
 527                         /* remove temp regions */
 528
 529                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 530                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 531
 532                                 tmp = iter;
 533                                 ++tmp;
 534
 535                                 (*iter).first->drop_references ();
 536
 537                                 iter = tmp;
 538                         }
 539
 540                         rec_regions.clear();
 541
 542                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 543
 544                         /* transport stopped, clear boxes */
 545                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 546                                 RecBoxInfo &rect = (*iter);
 547                                 delete rect.rectangle;
 548                         }
 549
 550                         rec_rects.clear();
 551
 552                 }
 553         }
 554 }
 555
 556 void
 557 MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t start, nframes_t dur)
 558 {
 559         ENSURE_GUI_THREAD (*this, &MidiStreamView::update_rec_regions, data, start, dur)
 560
 561         if (Config->get_show_waveforms_while_recording ()) {
 562
 563                 uint32_t n = 0;
 564                 bool     update_range = false;
 565
 566                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 567                                 iter != rec_regions.end(); n++) {
 568
 569                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 570                         ++tmp;
 571
 572                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 573                                 /* rect already hidden, this region is done */
 574                                 iter = tmp;
 575                                 continue;
 576                         }
 577
 578                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
 579                         if (!region) {
 580                                 iter = tmp;
 581                                 continue;
 582                         }
 583
 584                         nframes_t origlen = region->length();
 585
 586                         if (region == rec_regions.back().first && rec_active) {
 587
 588                                 if (start >= region->midi_source(0)->timeline_position()) {
 589
 590                                         nframes_t nlen = start + dur - region->position();
 591
 592                                         if (nlen != region->length()) {
 593
 594                                                 region->suspend_property_changes ();
 595                                                 region->set_position (_trackview.track()->get_capture_start_frame(n), this);
 596                                                 region->set_length (start + dur - region->position(), this);
 597                                                 region->resume_property_changes ();
 598
 599                                                 if (origlen == 1) {
 600                                                         /* our special initial length */
 601                                                         iter->second = add_region_view_internal (region, false);
 602                                                         ((MidiRegionView*)iter->second)->begin_write();
 603                                                 }
 604
 605                                                 /* also update rect */
 606                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 607                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 608                                                 rect->property_x2() = xend;
 609
 610                                                 ARDOUR::BeatsFramesConverter tconv(_trackview.session()->tempo_map(), region->position());
 611                                                 const MidiModel::TimeType start_beats = tconv.from(start);
 612
 613                                                 /* draw events */
 614                                                 MidiRegionView* mrv = (MidiRegionView*)iter->second;
 615
 616                                                 for (MidiModel::Notes::const_iterator i = data->note_lower_bound(start_beats);
 617                                                                 i != data->notes().end(); ++i) {
 618
 619                                                         const boost::shared_ptr<MidiRegionView::NoteType>& note = *i;
 620
 621                                                         cerr << "New note arrived, length = " << note->length()
 622                                                              << " num " << note->note()
 623                                                              << endl;
 624
 625                                                         if (note->length() == 0) {
 626                                                                 /* we got NoteOn but not NoteOff (yet)
 627                                                                  */
 628                                                                 continue;
 629                                                         }
 630
 631                                                         nframes_t note_start_frames = tconv.to(note->time());
 632                                                         nframes_t note_end_frames   = tconv.to(note->end_time());
 633
 634
 635                                                         if (note->length() > 0 && note_end_frames + region->position() > start) {
 636                                                                 mrv->resolve_note(note->note(), note_end_frames);
 637                                                         }
 638
 639                                                         if (note_start_frames + region->position() < start) {
 640                                                                 continue;
 641                                                         }
 642
 643                                                         if (note_start_frames + region->position() > start + dur) {
 644                                                                 break;
 645                                                         }
 646
 647                                                         if (note->note() < _lowest_note) {
 648                                                                 _lowest_note = note->note();
 649                                                                 update_range = true;
 650                                                         } else if (note->note() > _highest_note) {
 651                                                                 _highest_note = note->note();
 652                                                                 update_range = true;
 653                                                         }
 654
 655                                                         mrv->add_note (note, !update_range);
 656                                                 }
 657
 658                                                 mrv->extend_active_notes();
 659                                         }
 660                                 }
 661
 662                         } else {
 663
 664                                 nframes_t nlen = _trackview.track()->get_captured_frames(n);
 665
 666                                 if (nlen != region->length()) {
 667
 668                                         if (region->source_length(0) >= region->position() + nlen) {
 669
 670                                                 region->suspend_property_changes ();
 671                                                 region->set_position (_trackview.track()->get_capture_start_frame(n), this);
 672                                                 region->set_length (nlen, this);
 673                                                 region->resume_property_changes ();
 674
 675                                                 if (origlen == 1) {
 676                                                         /* our special initial length */
 677                                                         iter->second = add_region_view_internal (region, false);
 678                                                 }
 679
 680                                                 /* also hide rect */
 681                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 682                                                 rect->hide();
 683
 684                                         }
 685                                 }
 686                         }
 687
 688                         iter = tmp;
 689                 }
 690
 691                 if (update_range)
 692                         update_contents_height();
 693         }
 694 }
 695
 696 void
 697 MidiStreamView::rec_data_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 698 {
 699         // this is called from the butler thread for now
 700
 701         ENSURE_GUI_THREAD (*this, &MidiStreamView::rec_data_range_ready, start, cnt, weak_src)
 702
 703         boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
 704
 705         if (!src) {
 706                 return;
 707         }
 708
 709         if (start + cnt > last_rec_data_frame) {
 710                 last_rec_data_frame = start + cnt;
 711         }
 712
 713         this->update_rec_regions (src->model(), start, cnt);
 714 }
 715
 716 void
 717 MidiStreamView::color_handler ()
 718 {
 719         draw_note_lines ();
 720
 721         if (_trackview.is_midi_track()) {
 722                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 723         } else {
 724                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 725         }
 726 }
 727
 728 void
 729 MidiStreamView::note_range_adjustment_changed()
 730 {
 731         double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
 732         int lowest = (int) floor(note_range_adjustment.get_value());
 733         int highest;
 734
 735         if (sum == _range_sum_cache) {
 736                 //cerr << "cached" << endl;
 737                 highest = (int) floor(sum);
 738         } else {
 739                 //cerr << "recalc" << endl;
 740                 highest = lowest + (int) floor(note_range_adjustment.get_page_size());
 741                 _range_sum_cache = sum;
 742         }
 743
 744         if (lowest == _lowest_note && highest == _highest_note) {
 745                 return;
 746         }
 747
 748         //cerr << "note range adjustment changed: " << lowest << " " << highest << endl;
 749         //cerr << "  val=" << v_zoom_adjustment.get_value() << " page=" << v_zoom_adjustment.get_page_size() << " sum=" << v_zoom_adjustment.get_value() + v_zoom_adjustment.get_page_size() << endl;
 750
 751         _lowest_note = lowest;
 752         _highest_note = highest;
 753         apply_note_range(lowest, highest, true);
 754 }
 755