gtk2_ardour/audio_streamview.cc

   1 /*
   2     Copyright (C) 2001, 2006 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
  22 #include <gtkmm.h>
  23
  24 #include <gtkmm2ext/gtk_ui.h>
  25
  26 #include <ardour/audioplaylist.h>
  27 #include <ardour/audioregion.h>
  28 #include <ardour/audiofilesource.h>
  29 #include <ardour/audio_diskstream.h>
  30 #include <ardour/audio_track.h>
  31 #include <ardour/playlist_templates.h>
  32 #include <ardour/source.h>
  33 #include <ardour/region_factory.h>
  34
  35 #include "audio_streamview.h"
  36 #include "audio_region_view.h"
  37 #include "tape_region_view.h"
  38 #include "audio_time_axis.h"
  39 #include "canvas-waveview.h"
  40 #include "canvas-simplerect.h"
  41 #include "region_selection.h"
  42 #include "selection.h"
  43 #include "public_editor.h"
  44 #include "ardour_ui.h"
  45 #include "crossfade_view.h"
  46 #include "rgb_macros.h"
  47 #include "gui_thread.h"
  48 #include "utils.h"
  49 #include "color.h"
  50
  51 using namespace ARDOUR;
  52 using namespace PBD;
  53 using namespace Editing;
  54
  55 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  56         : StreamView (tv)
  57 {
  58         crossfades_visible = true;
  59
  60         if (tv.is_audio_track())
  61                 stream_base_color = color_map[cAudioTrackBase];
  62         else
  63                 stream_base_color = color_map[cAudioBusBase];
  64
  65         canvas_rect->property_fill_color_rgba() = stream_base_color;
  66         canvas_rect->property_outline_color_rgba() = color_map[cAudioTrackOutline];
  67
  68         _amplitude_above_axis = 1.0;
  69
  70         use_rec_regions = tv.editor.show_waveforms_recording ();
  71         last_rec_peak_frame = 0;
  72
  73 }
  74
  75 AudioStreamView::~AudioStreamView ()
  76 {
  77 }
  78
  79 int
  80 AudioStreamView::set_height (gdouble h)
  81 {
  82         /* limit the values to something sane-ish */
  83         if (h < 10.0 || h > 1000.0) {
  84                 return -1;
  85         }
  86
  87         StreamView::set_height(h);
  88
  89         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
  90                 (*i)->set_height (h);
  91         }
  92
  93         return 0;
  94 }
  95
  96 int
  97 AudioStreamView::set_samples_per_unit (gdouble spp)
  98 {
  99         StreamView::set_samples_per_unit(spp);
 100
 101         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 102                 (*xi)->set_samples_per_unit (spp);
 103         }
 104
 105         return 0;
 106 }
 107
 108 int
 109 AudioStreamView::set_amplitude_above_axis (gdouble app)
 110 {
 111         RegionViewList::iterator i;
 112
 113         if (app < 1.0) {
 114                 return -1;
 115         }
 116
 117         _amplitude_above_axis = app;
 118
 119         for (i = region_views.begin(); i != region_views.end(); ++i) {
 120                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 121                 if (arv)
 122                         arv->set_amplitude_above_axis (app);
 123         }
 124
 125         return 0;
 126 }
 127
 128 void
 129 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves)
 130 {
 131         AudioRegionView *region_view;
 132
 133         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 134
 135         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 136
 137         if (region == 0) {
 138                 return;
 139         }
 140
 141         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 142                 if ((*i)->region() == r) {
 143
 144                         /* great. we already have a AudioRegionView for this Region. use it again. */
 145
 146                         (*i)->set_valid (true);
 147                         return;
 148                 }
 149         }
 150
 151         switch (_trackview.audio_track()->mode()) {
 152         case Normal:
 153                 region_view = new AudioRegionView (canvas_group, _trackview, region,
 154                                                    _samples_per_unit, region_color);
 155                 break;
 156         case Destructive:
 157                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 158                                                        _samples_per_unit, region_color);
 159                 break;
 160         }
 161
 162         region_view->init (region_color, wait_for_waves);
 163         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 164         region_views.push_front (region_view);
 165
 166         /* follow global waveform setting */
 167
 168         region_view->set_waveform_visible(_trackview.editor.show_waveforms());
 169
 170         /* catch regionview going away */
 171         region->GoingAway.connect (bind (mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 172
 173         RegionViewAdded (region_view);
 174 }
 175
 176 void
 177 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 178 {
 179         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_region_view), weak_r));
 180
 181         boost::shared_ptr<Region> r (weak_r.lock());
 182
 183         if (!r) {
 184                 return;
 185         }
 186
 187         if (!_trackview.session().deletion_in_progress()) {
 188
 189                 for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 190                         list<CrossfadeView*>::iterator tmp;
 191
 192                         tmp = i;
 193                         ++tmp;
 194
 195                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 196                         if (ar && (*i)->crossfade.involves (ar)) {
 197                                 delete *i;
 198                                 crossfade_views.erase (i);
 199                         }
 200
 201                         i = tmp;
 202                 }
 203         }
 204
 205
 206         StreamView::remove_region_view(r);
 207 }
 208
 209 void
 210 AudioStreamView::undisplay_diskstream ()
 211 {
 212         StreamView::undisplay_diskstream();
 213
 214         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 215                 delete *i;
 216         }
 217
 218         crossfade_views.clear ();
 219 }
 220
 221 void
 222 AudioStreamView::playlist_modified ()
 223 {
 224         ENSURE_GUI_THREAD (mem_fun (*this, &AudioStreamView::playlist_modified));
 225
 226         StreamView::playlist_modified();
 227
 228         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 229
 230         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 231                 (*i)->get_canvas_group()->raise_to_top();
 232         }
 233 }
 234
 235 void
 236 AudioStreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 237 {
 238         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_changed), ds));
 239
 240         StreamView::playlist_changed(ds);
 241
 242         AudioPlaylist* apl = dynamic_cast<AudioPlaylist*>(ds->playlist());
 243         if (apl)
 244                 playlist_connections.push_back (apl->NewCrossfade.connect (mem_fun (*this, &AudioStreamView::add_crossfade)));
 245 }
 246
 247 void
 248 AudioStreamView::add_crossfade (Crossfade *crossfade)
 249 {
 250         AudioRegionView* lview = 0;
 251         AudioRegionView* rview = 0;
 252
 253         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade), crossfade));
 254
 255         /* first see if we already have a CrossfadeView for this Crossfade */
 256
 257         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 258                 if ((*i)->crossfade == *crossfade) {
 259                         if (!crossfades_visible) {
 260                                 (*i)->hide();
 261                         } else {
 262                                 (*i)->show ();
 263                         }
 264                         (*i)->set_valid (true);
 265                         return;
 266                 }
 267         }
 268
 269         /* create a new one */
 270
 271         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 272                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 273
 274                 if (!lview && arv && (arv->region() == crossfade->out())) {
 275                         lview = arv;
 276                 }
 277                 if (!rview && arv && (arv->region() == crossfade->in())) {
 278                         rview = arv;
 279                 }
 280         }
 281
 282         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display,
 283                                                _trackview,
 284                                                *crossfade,
 285                                                _samples_per_unit,
 286                                                region_color,
 287                                                *lview, *rview);
 288
 289         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 290         crossfade_views.push_back (cv);
 291
 292         if (!Config->get_xfades_visible() || !crossfades_visible) {
 293                 cv->hide ();
 294         }
 295 }
 296
 297 void
 298 AudioStreamView::remove_crossfade (Crossfade *xfade)
 299 {
 300         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), xfade));
 301
 302         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 303                 if (&(*i)->crossfade == xfade) {
 304                         delete *i;
 305                         crossfade_views.erase (i);
 306                         break;
 307                 }
 308         }
 309 }
 310
 311 void
 312 AudioStreamView::redisplay_diskstream ()
 313 {
 314         list<RegionView *>::iterator i, tmp;
 315         list<CrossfadeView*>::iterator xi, tmpx;
 316
 317         for (i = region_views.begin(); i != region_views.end(); ++i) {
 318                 (*i)->set_valid (false);
 319         }
 320
 321         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 322                 (*xi)->set_valid (false);
 323                 if ((*xi)->visible()) {
 324                         (*xi)->show ();
 325                 }
 326         }
 327
 328         if (_trackview.is_audio_track()) {
 329                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 330
 331                 AudioPlaylist* apl = dynamic_cast<AudioPlaylist*>(_trackview.get_diskstream()->playlist());
 332                 if (apl)
 333                         apl->foreach_crossfade (this, &AudioStreamView::add_crossfade);
 334         }
 335
 336         for (i = region_views.begin(); i != region_views.end(); ) {
 337                 tmp = i;
 338                 tmp++;
 339
 340                 if (!(*i)->is_valid()) {
 341                         delete *i;
 342                         region_views.erase (i);
 343                 }
 344
 345                 i = tmp;
 346         }
 347
 348         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 349                 tmpx = xi;
 350                 tmpx++;
 351
 352                 if (!(*xi)->valid()) {
 353                         delete *xi;
 354                         crossfade_views.erase (xi);
 355                 }
 356
 357                 xi = tmpx;
 358         }
 359
 360         /* now fix layering */
 361
 362         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 363                 region_layered (*i);
 364         }
 365 }
 366
 367 void
 368 AudioStreamView::set_show_waveforms (bool yn)
 369 {
 370         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 371                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 372                 if (arv)
 373                         arv->set_waveform_visible (yn);
 374         }
 375 }
 376
 377 void
 378 AudioStreamView::set_waveform_shape (WaveformShape shape)
 379 {
 380         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 381                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 382                 if (arv)
 383                         arv->set_waveform_shape (shape);
 384         }
 385 }
 386
 387 void
 388 AudioStreamView::setup_rec_box ()
 389 {
 390         // cerr << _trackview.name() << " streamview SRB\n";
 391
 392         if (_trackview.session().transport_rolling()) {
 393
 394                 // cerr << "\trolling\n";
 395
 396                 if (!rec_active &&
 397                     _trackview.session().record_status() == Session::Recording &&
 398                     _trackview.get_diskstream()->record_enabled()) {
 399
 400                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 401
 402                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 403
 404                                 SourceList sources;
 405
 406                                 for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 407                                         (*prc).disconnect();
 408                                 }
 409                                 peak_ready_connections.clear();
 410
 411                                 // FIXME
 412                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 413                                 assert(ads);
 414
 415                                 for (uint32_t n=0; n < ads->n_channels(); ++n) {
 416                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 417                                         if (src) {
 418                                                 sources.push_back (src);
 419                                                 peak_ready_connections.push_back (src->PeakRangeReady.connect (bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), boost::weak_ptr<Source>(src))));
 420                                         }
 421                                 }
 422
 423                                 // handle multi
 424
 425                                 nframes_t start = 0;
 426                                 if (rec_regions.size() > 0) {
 427                                         start = rec_regions.back()->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 428                                 }
 429
 430                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>
 431                                                                        (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 432                                 region->set_position (_trackview.session().transport_frame(), this);
 433
 434                                 rec_regions.push_back (region);
 435                         }
 436
 437                         /* start a new rec box */
 438
 439                         AudioTrack* at;
 440
 441                         at = _trackview.audio_track(); /* we know what it is already */
 442                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 443                         nframes_t frame_pos = ds->current_capture_start ();
 444                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 445                         gdouble xend;
 446                         uint32_t fill_color;
 447
 448                         switch (_trackview.audio_track()->mode()) {
 449                         case Normal:
 450                                 xend = xstart;
 451                                 fill_color = color_map[cRecordingRectFill];
 452                                 break;
 453
 454                         case Destructive:
 455                                 xend = xstart + 2;
 456                                 fill_color = color_map[cRecordingRectFill];
 457                                 /* make the recording rect translucent to allow
 458                                    the user to see the peak data coming in, etc.
 459                                 */
 460                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 461                                 break;
 462                         }
 463
 464                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 465                         rec_rect->property_x1() = xstart;
 466                         rec_rect->property_y1() = 1.0;
 467                         rec_rect->property_x2() = xend;
 468                         rec_rect->property_y2() = (double) _trackview.height - 1;
 469                         rec_rect->property_outline_color_rgba() = color_map[cRecordingRectOutline];
 470                         rec_rect->property_fill_color_rgba() = fill_color;
 471
 472                         RecBoxInfo recbox;
 473                         recbox.rectangle = rec_rect;
 474                         recbox.start = _trackview.session().transport_frame();
 475                         recbox.length = 0;
 476
 477                         rec_rects.push_back (recbox);
 478
 479                         screen_update_connection.disconnect();
 480                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 481                         rec_updating = true;
 482                         rec_active = true;
 483
 484                 } else if (rec_active &&
 485                            (_trackview.session().record_status() != Session::Recording ||
 486                             !_trackview.get_diskstream()->record_enabled())) {
 487
 488                         screen_update_connection.disconnect();
 489                         rec_active = false;
 490                         rec_updating = false;
 491
 492                 }
 493
 494         } else {
 495
 496                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 497
 498                 if (!rec_rects.empty() || !rec_regions.empty()) {
 499
 500                         /* disconnect rapid update */
 501                         screen_update_connection.disconnect();
 502
 503                         for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 504                                 (*prc).disconnect();
 505                         }
 506                         peak_ready_connections.clear();
 507
 508                         rec_updating = false;
 509                         rec_active = false;
 510                         last_rec_peak_frame = 0;
 511
 512                         /* remove temp regions */
 513
 514                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 515                                 list<boost::shared_ptr<Region> >::iterator tmp;
 516
 517                                 tmp = iter;
 518                                 ++tmp;
 519
 520                                 (*iter)->drop_references ();
 521
 522                                 iter = tmp;
 523                         }
 524
 525                         rec_regions.clear();
 526
 527                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 528
 529                         /* transport stopped, clear boxes */
 530                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 531                                 RecBoxInfo &rect = (*iter);
 532                                 delete rect.rectangle;
 533                         }
 534
 535                         rec_rects.clear();
 536
 537                 }
 538         }
 539 }
 540
 541 void
 542 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 543 {
 544         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 545                 ((*i)->*pmf) ();
 546         }
 547 }
 548
 549 void
 550 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 551 {
 552         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 553
 554         boost::shared_ptr<Source> src (weak_src.lock());
 555
 556         if (!src) {
 557                 return;
 558         }
 559
 560         // this is called from the peak building thread
 561
 562         if (rec_peak_ready_map.size() == 0 || start+cnt > last_rec_peak_frame) {
 563                 last_rec_peak_frame = start + cnt;
 564         }
 565
 566         rec_peak_ready_map[src] = true;
 567
 568         if (rec_peak_ready_map.size() == _trackview.get_diskstream()->n_channels()) {
 569                 this->update_rec_regions ();
 570                 rec_peak_ready_map.clear();
 571         }
 572 }
 573
 574 void
 575 AudioStreamView::update_rec_regions ()
 576 {
 577         if (use_rec_regions) {
 578
 579                 uint32_t n = 0;
 580
 581                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 582
 583                         list<boost::shared_ptr<Region> >::iterator tmp;
 584
 585                         tmp = iter;
 586                         ++tmp;
 587
 588                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 589                                 /* rect already hidden, this region is done */
 590                                 iter = tmp;
 591                                 continue;
 592                         }
 593
 594                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(*iter);
 595                         if (!region) {
 596                                 continue;
 597                         }
 598
 599                         nframes_t origlen = region->length();
 600
 601                         if (region == rec_regions.back() && rec_active) {
 602
 603                                 if (last_rec_peak_frame > region->start()) {
 604
 605                                         nframes_t nlen = last_rec_peak_frame - region->start();
 606
 607                                         if (nlen != region->length()) {
 608
 609                                                 region->freeze ();
 610                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 611                                                 region->set_length (nlen, this);
 612                                                 region->thaw ("updated");
 613
 614                                                 if (origlen == 1) {
 615                                                         /* our special initial length */
 616                                                         add_region_view_internal (region, false);
 617                                                 }
 618
 619                                                 /* also update rect */
 620                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 621                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 622                                                 rect->property_x2() = xend;
 623                                         }
 624                                 }
 625
 626                         } else {
 627
 628                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 629
 630                                 if (nlen != region->length()) {
 631
 632                                         if (region->source(0)->length() >= region->start() + nlen) {
 633
 634                                                 region->freeze ();
 635                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 636                                                 region->set_length (nlen, this);
 637                                                 region->thaw ("updated");
 638
 639                                                 if (origlen == 1) {
 640                                                         /* our special initial length */
 641                                                         add_region_view_internal (region, false);
 642                                                 }
 643
 644                                                 /* also hide rect */
 645                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 646                                                 rect->hide();
 647
 648                                         }
 649                                 }
 650                         }
 651
 652                         iter = tmp;
 653                 }
 654         }
 655 }
 656
 657 void
 658 AudioStreamView::show_all_xfades ()
 659 {
 660         foreach_crossfadeview (&CrossfadeView::show);
 661         crossfades_visible = true;
 662 }
 663
 664 void
 665 AudioStreamView::hide_all_xfades ()
 666 {
 667         foreach_crossfadeview (&CrossfadeView::hide);
 668         crossfades_visible = false;
 669 }
 670
 671 void
 672 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 673 {
 674         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 675                 if ((*i)->crossfade.involves (rv.audio_region())) {
 676                         (*i)->fake_hide ();
 677                 }
 678         }
 679 }
 680
 681 void
 682 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 683 {
 684         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 685                 if ((*i)->crossfade.involves (rv.audio_region()) && (*i)->visible()) {
 686                         (*i)->show ();
 687                 }
 688         }
 689 }
 690
 691 void
 692 AudioStreamView::color_handler (ColorID id, uint32_t val)
 693 {
 694         switch (id) {
 695         case cAudioTrackBase:
 696                 if (_trackview.is_track()) {
 697                         canvas_rect->property_fill_color_rgba() = val;
 698                 }
 699                 break;
 700         case cAudioBusBase:
 701                 if (!_trackview.is_track()) {
 702                         canvas_rect->property_fill_color_rgba() = val;
 703                 }
 704                 break;
 705         case cAudioTrackOutline:
 706                 canvas_rect->property_outline_color_rgba() = val;
 707                 break;
 708
 709         default:
 710                 break;
 711         }
 712 }
 713