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 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include "pbd/stacktrace.h"
  28
  29 #include "ardour/audioplaylist.h"
  30 #include "ardour/audioregion.h"
  31 #include "ardour/audiofilesource.h"
  32 #include "ardour/audio_track.h"
  33 #include "ardour/source.h"
  34 #include "ardour/region_factory.h"
  35 #include "ardour/profile.h"
  36 #include "ardour/rc_configuration.h"
  37 #include "ardour/session.h"
  38
  39 #include "audio_streamview.h"
  40 #include "audio_region_view.h"
  41 #include "tape_region_view.h"
  42 #include "audio_time_axis.h"
  43 #include "canvas-waveview.h"
  44 #include "canvas-simplerect.h"
  45 #include "region_selection.h"
  46 #include "selection.h"
  47 #include "public_editor.h"
  48 #include "ardour_ui.h"
  49 #include "crossfade_view.h"
  50 #include "rgb_macros.h"
  51 #include "gui_thread.h"
  52 #include "utils.h"
  53
  54 #include "i18n.h"
  55
  56 using namespace std;
  57 using namespace ARDOUR;
  58 using namespace PBD;
  59 using namespace Editing;
  60
  61 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  62         : StreamView (tv)
  63 {
  64         crossfades_visible = true;
  65         color_handler ();
  66         _amplitude_above_axis = 1.0;
  67
  68         Config->ParameterChanged.connect (*this, invalidator (*this), ui_bind (&AudioStreamView::parameter_changed, this, _1), gui_context());
  69 }
  70
  71 AudioStreamView::~AudioStreamView ()
  72 {
  73 }
  74
  75 int
  76 AudioStreamView::set_samples_per_unit (gdouble spp)
  77 {
  78         StreamView::set_samples_per_unit(spp);
  79
  80         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
  81                 xi->second->set_samples_per_unit (spp);
  82         }
  83
  84         return 0;
  85 }
  86
  87 int
  88 AudioStreamView::set_amplitude_above_axis (gdouble app)
  89 {
  90         RegionViewList::iterator i;
  91
  92         if (app < 1.0) {
  93                 return -1;
  94         }
  95
  96         _amplitude_above_axis = app;
  97
  98         for (i = region_views.begin(); i != region_views.end(); ++i) {
  99                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 100                 if (arv)
 101                         arv->set_amplitude_above_axis (app);
 102         }
 103
 104         return 0;
 105 }
 106
 107 RegionView*
 108 AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 109 {
 110         AudioRegionView *region_view = 0;
 111         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 112
 113         if (region == 0) {
 114                 return 0;
 115         }
 116
 117         switch (_trackview.audio_track()->mode()) {
 118
 119         case NonLayered:
 120         case Normal:
 121                 if (recording) {
 122                         region_view = new AudioRegionView (_canvas_group, _trackview, region,
 123                                         _samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(
 124                                                         TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 125                 } else {
 126                         region_view = new AudioRegionView (_canvas_group, _trackview, region,
 127                                         _samples_per_unit, region_color);
 128                 }
 129                 break;
 130         case Destructive:
 131                 region_view = new TapeAudioRegionView (_canvas_group, _trackview, region,
 132                                 _samples_per_unit, region_color);
 133                 break;
 134         default:
 135                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 136                 /*NOTREACHED*/
 137
 138         }
 139
 140         region_view->init (region_color, wait_for_waves);
 141         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 142         region_view->set_height (child_height ());
 143
 144         /* if its the special single-sample length that we use for rec-regions, make it
 145            insensitive to events
 146         */
 147
 148         if (region->length() == 1) {
 149                 region_view->set_sensitive (false);
 150         }
 151
 152         region_view->set_waveform_scale (Config->get_waveform_scale ());
 153         region_view->set_waveform_shape (Config->get_waveform_shape ());
 154         region_view->set_waveform_visible (Config->get_show_waveforms ());
 155
 156         return region_view;
 157 }
 158
 159 RegionView*
 160 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 161 {
 162         RegionView *region_view = create_region_view (r, wait_for_waves, recording);
 163         if (region_view == 0) {
 164                 return 0;
 165         }
 166
 167 //      if(!recording){
 168 //              for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 169 //                      if ((*i)->region() == r) {
 170 //                              cerr << "audio_streamview in add_region_view_internal region found" << endl;
 171                                 /* great. we already have a AudioRegionView for this Region. use it again. */
 172
 173 //                              (*i)->set_valid (true);
 174
 175                                 // this might not be necessary
 176 //                              AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 177
 178 //                              if (arv) {
 179 //                                      arv->set_waveform_scale (_waveform_scale);
 180 //                                      arv->set_waveform_shape (_waveform_shape);
 181 //                              }
 182
 183 //                              return NULL;
 184 //                      }
 185 //              }
 186 //      }
 187
 188         region_views.push_front (region_view);
 189
 190         /* catch region going away */
 191
 192         r->DropReferences.connect (*this, invalidator (*this), boost::bind (&AudioStreamView::remove_region_view, this, boost::weak_ptr<Region> (r)), gui_context());
 193
 194         RegionViewAdded (region_view);
 195
 196         return region_view;
 197 }
 198
 199 void
 200 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 201 {
 202         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_region_view, weak_r);
 203
 204         boost::shared_ptr<Region> r (weak_r.lock());
 205
 206         if (!r) {
 207                 return;
 208         }
 209
 210         if (!_trackview.session()->deletion_in_progress()) {
 211
 212                 for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 213                         CrossfadeViewList::iterator tmp;
 214
 215                         tmp = i;
 216                         ++tmp;
 217
 218                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 219                         if (ar && i->second->crossfade->involves (ar)) {
 220                                 delete i->second;
 221                                 crossfade_views.erase (i);
 222                         }
 223
 224                         i = tmp;
 225                 }
 226         }
 227
 228         StreamView::remove_region_view(r);
 229 }
 230
 231 void
 232 AudioStreamView::undisplay_track ()
 233 {
 234         StreamView::undisplay_track ();
 235
 236         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 237                 delete i->second;
 238         }
 239
 240         crossfade_views.clear ();
 241 }
 242
 243 void
 244 AudioStreamView::playlist_layered (boost::weak_ptr<Track> wtr)
 245 {
 246         boost::shared_ptr<Track> tr (wtr.lock());
 247
 248         if (!tr) {
 249                 return;
 250         }
 251
 252         StreamView::playlist_layered (wtr);
 253
 254         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 255
 256         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 257                 i->second->get_canvas_group()->raise_to_top();
 258         }
 259 }
 260
 261 void
 262 AudioStreamView::playlist_switched (boost::weak_ptr<Track> wtr)
 263 {
 264         boost::shared_ptr<Track> tr (wtr.lock());
 265
 266         if (!tr) {
 267                 return;
 268         }
 269
 270         playlist_connections.drop_connections ();
 271
 272         StreamView::playlist_switched (tr);
 273
 274         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist> (tr->playlist());
 275
 276         if (apl) {
 277                 apl->NewCrossfade.connect (playlist_connections, invalidator (*this), ui_bind (&AudioStreamView::add_crossfade, this, _1), gui_context());
 278         }
 279 }
 280
 281 void
 282 AudioStreamView::add_crossfade (boost::weak_ptr<Crossfade> wc)
 283 {
 284         boost::shared_ptr<Crossfade> crossfade (wc.lock());
 285
 286         if (!crossfade) {
 287                 return;
 288         }
 289
 290         AudioRegionView* lview = 0;
 291         AudioRegionView* rview = 0;
 292
 293         /* first see if we already have a CrossfadeView for this Crossfade */
 294
 295         CrossfadeViewList::iterator i = crossfade_views.find (crossfade);
 296         if (i != crossfade_views.end()) {
 297                 if (!crossfades_visible) {
 298                         i->second->hide();
 299                 } else {
 300                         i->second->show ();
 301                 }
 302                 i->second->set_valid (true);
 303                 return;
 304         }
 305
 306         /* create a new one */
 307
 308         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 309                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 310
 311                 if (!lview && arv && (arv->region() == crossfade->out())) {
 312                         lview = arv;
 313                 }
 314                 if (!rview && arv && (arv->region() == crossfade->in())) {
 315                         rview = arv;
 316                 }
 317         }
 318
 319         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display (),
 320                                                _trackview,
 321                                                 crossfade,
 322                                                _samples_per_unit,
 323                                                region_color,
 324                                                *lview, *rview);
 325         cv->set_valid (true);
 326         crossfade->Invalidated.connect (*this, invalidator (*this), ui_bind (&AudioStreamView::remove_crossfade, this, _1), gui_context());
 327         crossfade_views[cv->crossfade] = cv;
 328         if (!_trackview.session()->config.get_xfades_visible() || !crossfades_visible) {
 329                 cv->hide ();
 330         }
 331
 332         update_content_height (cv);
 333 }
 334
 335 void
 336 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 337 {
 338         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_crossfade, r)
 339
 340         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 341
 342         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 343                 if (i->second->crossfade == xfade) {
 344                         delete i->second;
 345                         crossfade_views.erase (i);
 346                         break;
 347                 }
 348         }
 349 }
 350
 351 void
 352 AudioStreamView::redisplay_track ()
 353 {
 354         list<RegionView *>::iterator i;
 355         CrossfadeViewList::iterator xi, tmpx;
 356
 357         // Flag region views as invalid and disable drawing
 358         for (i = region_views.begin(); i != region_views.end(); ++i) {
 359                 (*i)->set_valid (false);
 360                 (*i)->enable_display (false);
 361         }
 362
 363         // Flag crossfade views as invalid
 364         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 365                 xi->second->set_valid (false);
 366                 if (xi->second->visible()) {
 367                         xi->second->show ();
 368                 }
 369         }
 370
 371         // Add and display region and crossfade views, and flag them as valid
 372
 373         if (_trackview.is_audio_track()) {
 374                 _trackview.track()->playlist()->foreach_region(
 375                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 376                         );
 377
 378                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 379                                 _trackview.track()->playlist()
 380                         );
 381
 382                 if (apl) {
 383                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 384                 }
 385         }
 386
 387         // Remove invalid crossfade views
 388         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 389                 tmpx = xi;
 390                 tmpx++;
 391
 392                 if (!xi->second->valid()) {
 393                         delete xi->second;
 394                         crossfade_views.erase (xi);
 395                 }
 396
 397                 xi = tmpx;
 398         }
 399
 400         // Stack regions by layer, and remove invalid regions
 401         layer_regions();
 402 }
 403
 404 void
 405 AudioStreamView::set_show_waveforms (bool yn)
 406 {
 407         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 408                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 409                 if (arv) {
 410                         arv->set_waveform_visible (yn);
 411                 }
 412         }
 413 }
 414
 415 void
 416 AudioStreamView::set_waveform_shape (WaveformShape shape)
 417 {
 418         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 419                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 420                 if (arv)
 421                         arv->set_waveform_shape (shape);
 422         }
 423 }
 424
 425 void
 426 AudioStreamView::set_waveform_scale (WaveformScale scale)
 427 {
 428         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 429                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 430                 if (arv) {
 431                         arv->set_waveform_scale (scale);
 432                 }
 433         }
 434 }
 435
 436 void
 437 AudioStreamView::setup_rec_box ()
 438 {
 439         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 440
 441         if (_trackview.session()->transport_rolling()) {
 442
 443                 // cerr << "\trolling\n";
 444
 445                 if (!rec_active &&
 446                     _trackview.session()->record_status() == Session::Recording &&
 447                     _trackview.track()->record_enabled()) {
 448                         if (_trackview.audio_track()->mode() == Normal && Config->get_show_waveforms_while_recording() && rec_regions.size() == rec_rects.size()) {
 449
 450                                 /* add a new region, but don't bother if they set show-waveforms-while-recording mid-record */
 451
 452                                 SourceList sources;
 453
 454                                 rec_data_ready_connections.drop_connections ();
 455                                 boost::shared_ptr<AudioTrack> tr = _trackview.audio_track();
 456
 457                                 for (uint32_t n = 0; n < tr->n_channels().n_audio(); ++n) {
 458                                         boost::shared_ptr<AudioFileSource> src = tr->write_source (n);
 459                                         if (src) {
 460                                                 sources.push_back (src);
 461                                                 src->PeakRangeReady.connect (rec_data_ready_connections,
 462                                                                              invalidator (*this),
 463                                                                              ui_bind (&AudioStreamView::rec_peak_range_ready, this, _1, _2, boost::weak_ptr<Source>(src)),
 464                                                                              gui_context());
 465                                         }
 466                                 }
 467
 468                                 // handle multi
 469
 470                                 nframes_t start = 0;
 471                                 if (rec_regions.size() > 0) {
 472                                         start = rec_regions.back().first->start()
 473                                                         + _trackview.track()->get_captured_frames(rec_regions.size()-1);
 474                                 }
 475
 476                                 PropertyList plist;
 477
 478                                 plist.add (Properties::start, start);
 479                                 plist.add (Properties::length, 1);
 480                                 plist.add (Properties::name, string());
 481                                 plist.add (Properties::layer, 0);
 482
 483                                 boost::shared_ptr<AudioRegion> region (
 484                                         boost::dynamic_pointer_cast<AudioRegion>(RegionFactory::create (sources, plist, false)));
 485
 486                                 assert(region);
 487                                 region->block_property_changes ();
 488                                 region->set_position (_trackview.session()->transport_frame(), this);
 489                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 490                         }
 491
 492                         /* start a new rec box */
 493
 494                         boost::shared_ptr<AudioTrack> at;
 495
 496                         at = _trackview.audio_track(); /* we know what it is already */
 497                         nframes_t frame_pos = at->current_capture_start ();
 498                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 499                         gdouble xend;
 500                         uint32_t fill_color;
 501
 502                         switch (_trackview.audio_track()->mode()) {
 503                         case Normal:
 504                         case NonLayered:
 505                                 xend = xstart;
 506                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 507                                 break;
 508
 509                         case Destructive:
 510                                 xend = xstart + 2;
 511                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 512                                 /* make the recording rect translucent to allow
 513                                    the user to see the peak data coming in, etc.
 514                                 */
 515                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 516                                 break;
 517                         }
 518
 519                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
 520                         rec_rect->property_x1() = xstart;
 521                         rec_rect->property_y1() = 1.0;
 522                         rec_rect->property_x2() = xend;
 523                         rec_rect->property_y2() = child_height ();
 524                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 525                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 526                         rec_rect->property_fill_color_rgba() = fill_color;
 527                         rec_rect->lower_to_bottom();
 528
 529                         RecBoxInfo recbox;
 530                         recbox.rectangle = rec_rect;
 531                         recbox.start = _trackview.session()->transport_frame();
 532                         recbox.length = 0;
 533
 534                         rec_rects.push_back (recbox);
 535
 536                         screen_update_connection.disconnect();
 537                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 538                                         sigc::mem_fun (*this, &AudioStreamView::update_rec_box));
 539                         rec_updating = true;
 540                         rec_active = true;
 541
 542                 } else if (rec_active &&
 543                            (_trackview.session()->record_status() != Session::Recording ||
 544                             !_trackview.track()->record_enabled())) {
 545                         screen_update_connection.disconnect();
 546                         rec_active = false;
 547                         rec_updating = false;
 548                 }
 549
 550         } else {
 551
 552                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 553
 554                 if (!rec_rects.empty() || !rec_regions.empty()) {
 555
 556                         /* disconnect rapid update */
 557                         screen_update_connection.disconnect();
 558                         rec_data_ready_connections.drop_connections ();
 559                         rec_updating = false;
 560                         rec_active = false;
 561
 562                         /* remove temp regions */
 563
 564                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 565                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 566
 567                                 tmp = iter;
 568                                 ++tmp;
 569
 570                                 (*iter).first->drop_references ();
 571
 572                                 iter = tmp;
 573                         }
 574
 575                         rec_regions.clear();
 576
 577                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 578
 579                         /* transport stopped, clear boxes */
 580                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 581                                 RecBoxInfo &rect = (*iter);
 582                                 delete rect.rectangle;
 583                         }
 584
 585                         rec_rects.clear();
 586
 587                 }
 588         }
 589 }
 590
 591 void
 592 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 593 {
 594         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 595                 (i->second->*pmf) ();
 596         }
 597 }
 598
 599 void
 600 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 601 {
 602         ENSURE_GUI_THREAD (*this, &AudioStreamView::rec_peak_range_ready, start, cnt, weak_src)
 603
 604         boost::shared_ptr<Source> src (weak_src.lock());
 605
 606         if (!src) {
 607                 return;
 608         }
 609
 610         // this is called from the peak building thread
 611
 612         if (rec_data_ready_map.size() == 0 || start + cnt > last_rec_data_frame) {
 613                 last_rec_data_frame = start + cnt;
 614         }
 615
 616         rec_data_ready_map[src] = true;
 617
 618         if (rec_data_ready_map.size() == _trackview.track()->n_channels().n_audio()) {
 619                 this->update_rec_regions ();
 620                 rec_data_ready_map.clear();
 621         }
 622 }
 623
 624 void
 625 AudioStreamView::update_rec_regions ()
 626 {
 627         if (Config->get_show_waveforms_while_recording ()) {
 628                 uint32_t n = 0;
 629
 630                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 631                                 iter != rec_regions.end(); n++) {
 632
 633                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 634                         ++tmp;
 635
 636                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 637                                 /* rect already hidden, this region is done */
 638                                 iter = tmp;
 639                                 continue;
 640                         }
 641
 642                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 643                         if (!region) {
 644                                 iter = tmp;
 645                                 continue;
 646                         }
 647
 648                         nframes_t origlen = region->length();
 649
 650                         if (region == rec_regions.back().first && rec_active) {
 651
 652                                 if (last_rec_data_frame > region->start()) {
 653
 654                                         nframes_t nlen = last_rec_data_frame - region->start();
 655
 656                                         if (nlen != region->length()) {
 657
 658                                                 region->suspend_property_changes ();
 659                                                 region->set_position (_trackview.track()->get_capture_start_frame(n), this);
 660                                                 region->set_length (nlen, this);
 661                                                 region->resume_property_changes ();
 662
 663                                                 if (origlen == 1) {
 664                                                         /* our special initial length */
 665                                                         add_region_view_internal (region, false, true);
 666                                                 }
 667
 668                                                 /* also update rect */
 669                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 670                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 671                                                 rect->property_x2() = xend;
 672                                         }
 673                                 }
 674
 675                         } else {
 676
 677                                 nframes_t nlen = _trackview.track()->get_captured_frames(n);
 678
 679                                 if (nlen != region->length()) {
 680
 681                                         if (region->source_length(0) >= region->start() + nlen) {
 682
 683                                                 region->suspend_property_changes ();
 684                                                 region->set_position (_trackview.track()->get_capture_start_frame(n), this);
 685                                                 region->set_length (nlen, this);
 686                                                 region->resume_property_changes ();
 687
 688                                                 if (origlen == 1) {
 689                                                         /* our special initial length */
 690                                                         add_region_view_internal (region, false, true);
 691                                                 }
 692
 693                                                 /* also hide rect */
 694                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 695                                                 rect->hide();
 696
 697                                         }
 698                                 }
 699                         }
 700
 701                         iter = tmp;
 702                 }
 703         }
 704 }
 705
 706 void
 707 AudioStreamView::show_all_fades ()
 708 {
 709         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 710                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 711                 if (arv) {
 712                         arv->set_fade_visibility (true);
 713                 }
 714         }
 715 }
 716
 717 void
 718 AudioStreamView::hide_all_fades ()
 719 {
 720         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 721                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 722                 if (arv) {
 723                         arv->set_fade_visibility (false);
 724                 }
 725         }
 726 }
 727
 728 void
 729 AudioStreamView::show_all_xfades ()
 730 {
 731         foreach_crossfadeview (&CrossfadeView::show);
 732         crossfades_visible = true;
 733 }
 734
 735 void
 736 AudioStreamView::hide_all_xfades ()
 737 {
 738         foreach_crossfadeview (&CrossfadeView::hide);
 739         crossfades_visible = false;
 740 }
 741
 742 void
 743 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 744 {
 745         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 746                 if (i->second->crossfade->involves (rv.audio_region())) {
 747                         i->second->fake_hide ();
 748                 }
 749         }
 750 }
 751
 752 void
 753 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 754 {
 755         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 756                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible()) {
 757                         i->second->show ();
 758                 }
 759         }
 760 }
 761
 762 void
 763 AudioStreamView::color_handler ()
 764 {
 765         //case cAudioTrackBase:
 766         if (_trackview.is_track()) {
 767                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 768         }
 769
 770         //case cAudioBusBase:
 771         if (!_trackview.is_track()) {
 772                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 773                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 774                 } else {
 775                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 776                 }
 777         }
 778 }
 779
 780 void
 781 AudioStreamView::update_contents_height ()
 782 {
 783         StreamView::update_contents_height ();
 784
 785         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 786                 update_content_height (i->second);
 787         }
 788 }
 789
 790 void
 791 AudioStreamView::update_content_height (CrossfadeView* cv)
 792 {
 793         cv->show ();
 794
 795         if (_layer_display == Overlaid) {
 796
 797                 cv->set_y (0);
 798                 cv->set_height (height);
 799
 800         } else {
 801
 802                 layer_t const inl = cv->crossfade->in()->layer ();
 803                 layer_t const outl = cv->crossfade->out()->layer ();
 804
 805                 layer_t const high = max (inl, outl);
 806                 layer_t const low = min (inl, outl);
 807
 808                 const double h = child_height ();
 809
 810                 cv->set_y ((_layers - high - 1) * h);
 811                 cv->set_height ((high - low + 1) * h);
 812
 813         }
 814 }
 815
 816 void
 817 AudioStreamView::parameter_changed (string const & p)
 818 {
 819         if (p == "show-waveforms") {
 820                 set_show_waveforms (Config->get_show_waveforms ());
 821         } else if (p == "waveform-scale") {
 822                 set_waveform_scale (Config->get_waveform_scale ());
 823         } else if (p == "waveform-shape") {
 824                 set_waveform_shape (Config->get_waveform_shape ());
 825         }
 826 }