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
  50 #include "i18n.h"
  51
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Editing;
  55
  56 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  57         : StreamView (tv)
  58 {
  59         crossfades_visible = true;
  60         _waveform_scale = LinearWaveform;
  61         _waveform_shape = Traditional;
  62
  63         if (tv.is_audio_track())
  64                 stream_base_color = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
  65         else
  66                 stream_base_color = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
  67
  68         canvas_rect->property_fill_color_rgba() = stream_base_color;
  69         canvas_rect->property_outline_color_rgba() = RGBA_BLACK;
  70
  71         _amplitude_above_axis = 1.0;
  72
  73         use_rec_regions = tv.editor.show_waveforms_recording ();
  74         last_rec_peak_frame = 0;
  75
  76 }
  77
  78 AudioStreamView::~AudioStreamView ()
  79 {
  80 }
  81
  82 int
  83 AudioStreamView::set_height (gdouble h)
  84 {
  85         /* limit the values to something sane-ish */
  86         if (h < 10.0 || h > 1000.0) {
  87                 return -1;
  88         }
  89
  90         StreamView::set_height(h);
  91
  92         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
  93                 (*i)->set_height (h);
  94         }
  95
  96         return 0;
  97 }
  98
  99 int
 100 AudioStreamView::set_samples_per_unit (gdouble spp)
 101 {
 102         StreamView::set_samples_per_unit(spp);
 103
 104         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 105                 (*xi)->set_samples_per_unit (spp);
 106         }
 107
 108         return 0;
 109 }
 110
 111 int
 112 AudioStreamView::set_amplitude_above_axis (gdouble app)
 113 {
 114         RegionViewList::iterator i;
 115
 116         if (app < 1.0) {
 117                 return -1;
 118         }
 119
 120         _amplitude_above_axis = app;
 121
 122         for (i = region_views.begin(); i != region_views.end(); ++i) {
 123                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 124                 if (arv)
 125                         arv->set_amplitude_above_axis (app);
 126         }
 127
 128         return 0;
 129 }
 130
 131 void
 132 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 133 {
 134         AudioRegionView *region_view = 0;
 135
 136         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 137
 138         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 139
 140         if (region == 0) {
 141                 return;
 142         }
 143
 144         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 145                 if ((*i)->region() == r) {
 146
 147                         /* great. we already have a AudioRegionView for this Region. use it again. */
 148
 149                         (*i)->set_valid (true);
 150
 151                         // this might not be necessary
 152                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 153                         if (arv) {
 154                                 arv->set_waveform_scale (_waveform_scale);
 155                                 arv->set_waveform_shape (_waveform_shape);
 156                         }
 157
 158                         return;
 159                 }
 160         }
 161
 162         switch (_trackview.audio_track()->mode()) {
 163         case Normal:
 164                 if (recording) {
 165                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 166                                                    _samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 167                 } else {
 168                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 169                                                    _samples_per_unit, region_color);
 170                 }
 171                 break;
 172         case Destructive:
 173                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 174                                                        _samples_per_unit, region_color);
 175                 break;
 176         default:
 177                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 178                 /*NOTREACHED*/
 179
 180         }
 181
 182         region_view->init (region_color, wait_for_waves);
 183         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 184         region_views.push_front (region_view);
 185
 186         /* if its the special single-sample length that we use for rec-regions, make it
 187            insensitive to events
 188         */
 189
 190         if (region->length() == 1) {
 191                 region_view->set_sensitive (false);
 192         }
 193
 194         /* if this was the first one, then lets query the waveform scale and shape.
 195            otherwise, we set it to the current value */
 196
 197         if (region_views.size() == 1) {
 198                 if (region_view->waveform_logscaled()) {
 199                         _waveform_scale = LogWaveform;
 200                 } else {
 201                         _waveform_scale = LinearWaveform;
 202                 }
 203
 204                 if (region_view->waveform_rectified()) {
 205                         _waveform_shape = Rectified;
 206                 } else {
 207                         _waveform_shape = Traditional;
 208                 }
 209         }
 210         else {
 211                 region_view->set_waveform_scale(_waveform_scale);
 212                 region_view->set_waveform_shape(_waveform_shape);
 213         }
 214
 215         /* follow global waveform setting */
 216
 217         region_view->set_waveform_visible(_trackview.editor.show_waveforms());
 218
 219         /* catch regionview going away */
 220         region->GoingAway.connect (bind (mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 221
 222         RegionViewAdded (region_view);
 223 }
 224
 225 void
 226 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 227 {
 228         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_region_view), weak_r));
 229
 230         boost::shared_ptr<Region> r (weak_r.lock());
 231
 232         if (!r) {
 233                 return;
 234         }
 235
 236         if (!_trackview.session().deletion_in_progress()) {
 237
 238                 for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 239                         list<CrossfadeView*>::iterator tmp;
 240
 241                         tmp = i;
 242                         ++tmp;
 243
 244                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 245                         if (ar && (*i)->crossfade->involves (ar)) {
 246                                 delete *i;
 247                                 crossfade_views.erase (i);
 248                         }
 249
 250                         i = tmp;
 251                 }
 252         }
 253
 254
 255         StreamView::remove_region_view(r);
 256 }
 257
 258 void
 259 AudioStreamView::undisplay_diskstream ()
 260 {
 261         StreamView::undisplay_diskstream();
 262
 263         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 264                 delete *i;
 265         }
 266
 267         crossfade_views.clear ();
 268 }
 269
 270 void
 271 AudioStreamView::playlist_modified ()
 272 {
 273         ENSURE_GUI_THREAD (mem_fun (*this, &AudioStreamView::playlist_modified));
 274
 275         StreamView::playlist_modified();
 276
 277         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 278
 279         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 280                 (*i)->get_canvas_group()->raise_to_top();
 281         }
 282 }
 283
 284 void
 285 AudioStreamView::playlist_changed (boost::weak_ptr<Diskstream> wptr)
 286 {
 287         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_changed), wptr));
 288
 289         boost::shared_ptr<Diskstream> ds  = wptr.lock();
 290
 291         if (!ds) {
 292                 return;
 293         }
 294
 295         StreamView::playlist_changed(ds);
 296
 297         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 298         if (apl)
 299                 playlist_connections.push_back (apl->NewCrossfade.connect (mem_fun (*this, &AudioStreamView::add_crossfade)));
 300 }
 301
 302 void
 303 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 304 {
 305         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 306
 307         if (!sp) {
 308                 return;
 309         }
 310
 311         add_crossfade (sp);
 312 }
 313
 314 void
 315 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 316 {
 317         AudioRegionView* lview = 0;
 318         AudioRegionView* rview = 0;
 319
 320         /* we do not allow shared_ptr<T> to be bound to slots */
 321
 322         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade_weak), boost::weak_ptr<Crossfade> (crossfade)));
 323
 324         /* first see if we already have a CrossfadeView for this Crossfade */
 325
 326         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 327                 if ((*i)->crossfade == crossfade) {
 328                         if (!crossfades_visible) {
 329                                 (*i)->hide();
 330                         } else {
 331                                 (*i)->show ();
 332                         }
 333                         (*i)->set_valid (true);
 334                         return;
 335                 }
 336         }
 337
 338         /* create a new one */
 339
 340         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 341                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 342
 343                 if (!lview && arv && (arv->region() == crossfade->out())) {
 344                         lview = arv;
 345                 }
 346                 if (!rview && arv && (arv->region() == crossfade->in())) {
 347                         rview = arv;
 348                 }
 349         }
 350
 351         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display,
 352                                                _trackview,
 353                                                 crossfade,
 354                                                _samples_per_unit,
 355                                                region_color,
 356                                                *lview, *rview);
 357
 358         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 359         crossfade_views.push_back (cv);
 360
 361         if (!Config->get_xfades_visible() || !crossfades_visible) {
 362                 cv->hide ();
 363         }
 364 }
 365
 366 void
 367 AudioStreamView::remove_crossfade (boost::shared_ptr<Crossfade> xfade)
 368 {
 369         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), xfade));
 370
 371         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 372                 if ((*i)->crossfade == xfade) {
 373                         delete *i;
 374                         crossfade_views.erase (i);
 375                         break;
 376                 }
 377         }
 378 }
 379
 380 void
 381 AudioStreamView::redisplay_diskstream ()
 382 {
 383         list<RegionView *>::iterator i, tmp;
 384         list<CrossfadeView*>::iterator xi, tmpx;
 385
 386         for (i = region_views.begin(); i != region_views.end(); ++i) {
 387                 (*i)->set_valid (false);
 388         }
 389
 390         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 391                 (*xi)->set_valid (false);
 392                 if ((*xi)->visible()) {
 393                         (*xi)->show ();
 394                 }
 395         }
 396
 397         if (_trackview.is_audio_track()) {
 398                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 399
 400                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_trackview.get_diskstream()->playlist());
 401                 if (apl)
 402                         apl->foreach_crossfade (this, &AudioStreamView::add_crossfade);
 403         }
 404
 405         for (i = region_views.begin(); i != region_views.end(); ) {
 406                 tmp = i;
 407                 tmp++;
 408
 409                 if (!(*i)->is_valid()) {
 410                         delete *i;
 411                         region_views.erase (i);
 412                 }
 413
 414                 i = tmp;
 415         }
 416
 417         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 418                 tmpx = xi;
 419                 tmpx++;
 420
 421                 if (!(*xi)->valid()) {
 422                         delete *xi;
 423                         crossfade_views.erase (xi);
 424                 }
 425
 426                 xi = tmpx;
 427         }
 428
 429         /* now fix layering */
 430
 431         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 432                 region_layered (*i);
 433         }
 434 }
 435
 436 void
 437 AudioStreamView::set_show_waveforms (bool yn)
 438 {
 439         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 440                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 441                 if (arv) {
 442                         arv->set_waveform_visible (yn);
 443                 }
 444         }
 445 }
 446
 447 void
 448 AudioStreamView::set_waveform_shape (WaveformShape shape)
 449 {
 450         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 451                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 452                 if (arv)
 453                         arv->set_waveform_shape (shape);
 454         }
 455         _waveform_shape = shape;
 456 }
 457
 458 void
 459 AudioStreamView::set_waveform_scale (WaveformScale scale)
 460 {
 461         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 462                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 463                 if (arv)
 464                         arv->set_waveform_scale (scale);
 465         }
 466         _waveform_scale = scale;
 467 }
 468
 469 void
 470 AudioStreamView::setup_rec_box ()
 471 {
 472         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 473
 474         if (_trackview.session().transport_rolling()) {
 475
 476                 // cerr << "\trolling\n";
 477
 478                 if (!rec_active &&
 479                     _trackview.session().record_status() == Session::Recording &&
 480                     _trackview.get_diskstream()->record_enabled()) {
 481                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 482
 483                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 484
 485                                 SourceList sources;
 486
 487                                 for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 488                                         (*prc).disconnect();
 489                                 }
 490                                 peak_ready_connections.clear();
 491
 492                                 // FIXME
 493                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 494                                 assert(ads);
 495
 496                                 for (uint32_t n=0; n < ads->n_channels(); ++n) {
 497                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 498                                         if (src) {
 499                                                 sources.push_back (src);
 500                                                 peak_ready_connections.push_back (src->PeakRangeReady.connect (bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), boost::weak_ptr<Source>(src))));
 501                                         }
 502                                 }
 503
 504                                 // handle multi
 505
 506                                 nframes_t start = 0;
 507                                 if (rec_regions.size() > 0) {
 508                                         start = rec_regions.back()->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 509                                 }
 510
 511                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>
 512                                                                        (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 513                                 region->set_position (_trackview.session().transport_frame(), this);
 514
 515                                 rec_regions.push_back (region);
 516                         }
 517
 518                         /* start a new rec box */
 519
 520                         boost::shared_ptr<AudioTrack> at = _trackview.audio_track ();
 521                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 522                         nframes_t frame_pos = ds->current_capture_start ();
 523                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 524                         gdouble xend;
 525                         uint32_t fill_color;
 526
 527                         switch (at->mode()) {
 528                         case Normal:
 529                                 xend = xstart;
 530                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 531                                 break;
 532
 533                         case Destructive:
 534                                 xend = xstart + 2;
 535                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 536                                 /* make the recording rect translucent to allow
 537                                    the user to see the peak data coming in, etc.
 538                                 */
 539                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 540                                 break;
 541                         }
 542
 543                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 544                         rec_rect->property_x1() = xstart;
 545                         rec_rect->property_y1() = 1.0;
 546                         rec_rect->property_x2() = xend;
 547                         rec_rect->property_y2() = (double) _trackview.current_height() - 1;
 548                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 549                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 550                         rec_rect->property_fill_color_rgba() = fill_color;
 551
 552                         RecBoxInfo recbox;
 553                         recbox.rectangle = rec_rect;
 554                         recbox.start = _trackview.session().transport_frame();
 555                         recbox.length = 0;
 556
 557                         rec_rects.push_back (recbox);
 558
 559                         screen_update_connection.disconnect();
 560                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 561                         rec_updating = true;
 562                         rec_active = true;
 563
 564                 } else if (rec_active &&
 565                            (_trackview.session().record_status() != Session::Recording ||
 566                             !_trackview.get_diskstream()->record_enabled())) {
 567                         screen_update_connection.disconnect();
 568                         rec_active = false;
 569                         rec_updating = false;
 570                 }
 571
 572         } else {
 573
 574                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 575
 576                 if (!rec_rects.empty() || !rec_regions.empty()) {
 577
 578                         /* disconnect rapid update */
 579                         screen_update_connection.disconnect();
 580
 581                         for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 582                                 (*prc).disconnect();
 583                         }
 584                         peak_ready_connections.clear();
 585
 586                         rec_updating = false;
 587                         rec_active = false;
 588                         last_rec_peak_frame = 0;
 589
 590                         /* remove temp regions */
 591
 592                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 593                                 list<boost::shared_ptr<Region> >::iterator tmp;
 594
 595                                 tmp = iter;
 596                                 ++tmp;
 597
 598                                 (*iter)->drop_references ();
 599
 600                                 iter = tmp;
 601                         }
 602
 603                         rec_regions.clear();
 604
 605                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 606
 607                         /* transport stopped, clear boxes */
 608                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 609                                 RecBoxInfo &rect = (*iter);
 610                                 delete rect.rectangle;
 611                         }
 612
 613                         rec_rects.clear();
 614
 615                 }
 616         }
 617 }
 618
 619 void
 620 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 621 {
 622         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 623                 ((*i)->*pmf) ();
 624         }
 625 }
 626
 627 void
 628 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 629 {
 630         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 631
 632         boost::shared_ptr<Source> src (weak_src.lock());
 633
 634         if (!src) {
 635                 return;
 636         }
 637
 638         // this is called from the peak building thread
 639
 640         if (rec_peak_ready_map.size() == 0 || start+cnt > last_rec_peak_frame) {
 641                 last_rec_peak_frame = start + cnt;
 642         }
 643
 644         rec_peak_ready_map[src] = true;
 645
 646         if (rec_peak_ready_map.size() == _trackview.get_diskstream()->n_channels()) {
 647                 this->update_rec_regions ();
 648                 rec_peak_ready_map.clear();
 649         }
 650 }
 651
 652 void
 653 AudioStreamView::update_rec_regions ()
 654 {
 655         if (use_rec_regions) {
 656                 uint32_t n = 0;
 657
 658                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 659
 660                         list<boost::shared_ptr<Region> >::iterator tmp;
 661
 662                         tmp = iter;
 663                         ++tmp;
 664
 665                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 666                                 /* rect already hidden, this region is done */
 667                                 iter = tmp;
 668                                 continue;
 669                         }
 670
 671                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(*iter);
 672                         if (!region) {
 673                                 continue;
 674                         }
 675
 676                         nframes_t origlen = region->length();
 677
 678                         if (region == rec_regions.back() && rec_active) {
 679
 680                                 if (last_rec_peak_frame > region->start()) {
 681
 682                                         nframes_t nlen = last_rec_peak_frame - region->start();
 683
 684                                         if (nlen != region->length()) {
 685
 686                                                 region->freeze ();
 687                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 688                                                 region->set_length (nlen, this);
 689                                                 region->thaw ("updated");
 690
 691                                                 if (origlen == 1) {
 692                                                         /* our special initial length */
 693                                                         add_region_view_internal (region, false, true);
 694                                                 }
 695
 696                                                 /* also update rect */
 697                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 698                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 699                                                 rect->property_x2() = xend;
 700                                         }
 701                                 }
 702
 703                         } else {
 704
 705                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 706
 707                                 if (nlen != region->length()) {
 708
 709                                         if (region->source(0)->length() >= region->start() + nlen) {
 710
 711                                                 region->freeze ();
 712                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 713                                                 region->set_length (nlen, this);
 714                                                 region->thaw ("updated");
 715
 716                                                 if (origlen == 1) {
 717                                                         /* our special initial length */
 718                                                         add_region_view_internal (region, false, true);
 719                                                 }
 720
 721                                                 /* also hide rect */
 722                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 723                                                 rect->hide();
 724
 725                                         }
 726                                 }
 727                         }
 728
 729                         iter = tmp;
 730                 }
 731         }
 732 }
 733
 734 void
 735 AudioStreamView::show_all_xfades ()
 736 {
 737         foreach_crossfadeview (&CrossfadeView::show);
 738         crossfades_visible = true;
 739 }
 740
 741 void
 742 AudioStreamView::hide_all_xfades ()
 743 {
 744         foreach_crossfadeview (&CrossfadeView::hide);
 745         crossfades_visible = false;
 746 }
 747
 748 void
 749 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 750 {
 751         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 752                 if ((*i)->crossfade->involves (rv.audio_region())) {
 753                         (*i)->fake_hide ();
 754                 }
 755         }
 756 }
 757
 758 void
 759 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 760 {
 761         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 762                 if ((*i)->crossfade->involves (rv.audio_region()) && (*i)->visible()) {
 763                         (*i)->show ();
 764                 }
 765         }
 766 }
 767
 768 void
 769 AudioStreamView::color_handler ()
 770 {
 771         if (_trackview.is_track()) {
 772                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 773         }
 774
 775         if (!_trackview.is_track()) {
 776                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 777         }
 778
 779 }
 780