gtk2_ardour/editor_ops.cc

   1 /*
   2     Copyright (C) 2000-2004 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
  20 /* Note: public Editor methods are documented in public_editor.h */
  21
  22 #include <unistd.h>
  23
  24 #include <cstdlib>
  25 #include <cmath>
  26 #include <string>
  27 #include <map>
  28 #include <set>
  29
  30 #include "pbd/error.h"
  31 #include "pbd/basename.h"
  32 #include "pbd/pthread_utils.h"
  33 #include "pbd/memento_command.h"
  34 #include "pbd/whitespace.h"
  35 #include "pbd/stateful_diff_command.h"
  36
  37 #include <gtkmm2ext/utils.h>
  38 #include <gtkmm2ext/choice.h>
  39 #include <gtkmm2ext/popup.h>
  40
  41 #include "ardour/audioengine.h"
  42 #include "ardour/session.h"
  43 #include "ardour/audioplaylist.h"
  44 #include "ardour/audioregion.h"
  45 #include "ardour/audio_diskstream.h"
  46 #include "ardour/utils.h"
  47 #include "ardour/location.h"
  48 #include "ardour/audio_track.h"
  49 #include "ardour/audioplaylist.h"
  50 #include "ardour/region_factory.h"
  51 #include "ardour/playlist_factory.h"
  52 #include "ardour/reverse.h"
  53 #include "ardour/transient_detector.h"
  54 #include "ardour/dB.h"
  55 #include "ardour/quantize.h"
  56 #include "ardour/strip_silence.h"
  57 #include "ardour/route_group.h"
  58 #include "ardour/operations.h"
  59
  60 #include "ardour_ui.h"
  61 #include "debug.h"
  62 #include "editor.h"
  63 #include "time_axis_view.h"
  64 #include "route_time_axis.h"
  65 #include "audio_time_axis.h"
  66 #include "automation_time_axis.h"
  67 #include "streamview.h"
  68 #include "audio_streamview.h"
  69 #include "audio_region_view.h"
  70 #include "midi_region_view.h"
  71 #include "rgb_macros.h"
  72 #include "selection_templates.h"
  73 #include "selection.h"
  74 #include "editing.h"
  75 #include "gtk-custom-hruler.h"
  76 #include "gui_thread.h"
  77 #include "keyboard.h"
  78 #include "utils.h"
  79 #include "editor_drag.h"
  80 #include "strip_silence_dialog.h"
  81 #include "editor_routes.h"
  82 #include "editor_regions.h"
  83 #include "quantize_dialog.h"
  84 #include "interthread_progress_window.h"
  85 #include "insert_time_dialog.h"
  86 #include "normalize_dialog.h"
  87 #include "editor_cursors.h"
  88 #include "mouse_cursors.h"
  89 #include "patch_change_dialog.h"
  90 #include "transpose_dialog.h"
  91
  92 #include "i18n.h"
  93
  94 using namespace std;
  95 using namespace ARDOUR;
  96 using namespace PBD;
  97 using namespace Gtk;
  98 using namespace Gtkmm2ext;
  99 using namespace Editing;
 100 using Gtkmm2ext::Keyboard;
 101
 102 /***********************************************************************
 103   Editor operations
 104  ***********************************************************************/
 105
 106 void
 107 Editor::undo (uint32_t n)
 108 {
 109         if (_session) {
 110                 _session->undo (n);
 111         }
 112 }
 113
 114 void
 115 Editor::redo (uint32_t n)
 116 {
 117         if (_session) {
 118                 _session->redo (n);
 119         }
 120 }
 121
 122 void
 123 Editor::split_regions_at (framepos_t where, RegionSelection& regions)
 124 {
 125         bool frozen = false;
 126
 127         list <boost::shared_ptr<Playlist > > used_playlists;
 128
 129         if (regions.empty()) {
 130                 return;
 131         }
 132
 133         begin_reversible_command (_("split"));
 134
 135         // if splitting a single region, and snap-to is using
 136         // region boundaries, don't pay attention to them
 137
 138         if (regions.size() == 1) {
 139                 switch (_snap_type) {
 140                 case SnapToRegionStart:
 141                 case SnapToRegionSync:
 142                 case SnapToRegionEnd:
 143                         break;
 144                 default:
 145                         snap_to (where);
 146                 }
 147         } else {
 148                 snap_to (where);
 149
 150                 frozen = true;
 151                 EditorFreeze(); /* Emit Signal */
 152         }
 153
 154         for (RegionSelection::iterator a = regions.begin(); a != regions.end(); ) {
 155
 156                 RegionSelection::iterator tmp;
 157
 158                 /* XXX this test needs to be more complicated, to make sure we really
 159                    have something to split.
 160                 */
 161
 162                 if (!(*a)->region()->covers (where)) {
 163                         ++a;
 164                         continue;
 165                 }
 166
 167                 tmp = a;
 168                 ++tmp;
 169
 170                 boost::shared_ptr<Playlist> pl = (*a)->region()->playlist();
 171
 172                 if (!pl) {
 173                         a = tmp;
 174                         continue;
 175                 }
 176
 177                 if (!pl->frozen()) {
 178                         /* we haven't seen this playlist before */
 179
 180                         /* remember used playlists so we can thaw them later */
 181                         used_playlists.push_back(pl);
 182                         pl->freeze();
 183                 }
 184
 185                 if (pl) {
 186                         pl->clear_changes ();
 187                         pl->split_region ((*a)->region(), where);
 188                         _session->add_command (new StatefulDiffCommand (pl));
 189                 }
 190
 191                 a = tmp;
 192         }
 193
 194         while (used_playlists.size() > 0) {
 195                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
 196                 (*i)->thaw();
 197                 used_playlists.pop_front();
 198         }
 199
 200         commit_reversible_command ();
 201
 202         if (frozen){
 203                 EditorThaw(); /* Emit Signal */
 204         }
 205 }
 206
 207 /** Move one extreme of the current range selection.  If more than one range is selected,
 208  *  the start of the earliest range or the end of the latest range is moved.
 209  *
 210  *  @param move_end true to move the end of the current range selection, false to move
 211  *  the start.
 212  *  @param next true to move the extreme to the next region boundary, false to move to
 213  *  the previous.
 214  */
 215 void
 216 Editor::move_range_selection_start_or_end_to_region_boundary (bool move_end, bool next)
 217 {
 218         if (selection->time.start() == selection->time.end_frame()) {
 219                 return;
 220         }
 221
 222         framepos_t start = selection->time.start ();
 223         framepos_t end = selection->time.end_frame ();
 224
 225         /* the position of the thing we may move */
 226         framepos_t pos = move_end ? end : start;
 227         int dir = next ? 1 : -1;
 228
 229         /* so we don't find the current region again */
 230         if (dir > 0 || pos > 0) {
 231                 pos += dir;
 232         }
 233
 234         framepos_t const target = get_region_boundary (pos, dir, true, false);
 235         if (target < 0) {
 236                 return;
 237         }
 238
 239         if (move_end) {
 240                 end = target;
 241         } else {
 242                 start = target;
 243         }
 244
 245         if (end < start) {
 246                 return;
 247         }
 248
 249         begin_reversible_command (_("alter selection"));
 250         selection->set_preserving_all_ranges (start, end);
 251         commit_reversible_command ();
 252 }
 253
 254 bool
 255 Editor::nudge_forward_release (GdkEventButton* ev)
 256 {
 257         if (ev->state & Keyboard::PrimaryModifier) {
 258                 nudge_forward (false, true);
 259         } else {
 260                 nudge_forward (false, false);
 261         }
 262         return false;
 263 }
 264
 265 bool
 266 Editor::nudge_backward_release (GdkEventButton* ev)
 267 {
 268         if (ev->state & Keyboard::PrimaryModifier) {
 269                 nudge_backward (false, true);
 270         } else {
 271                 nudge_backward (false, false);
 272         }
 273         return false;
 274 }
 275
 276
 277 void
 278 Editor::nudge_forward (bool next, bool force_playhead)
 279 {
 280         framepos_t distance;
 281         framepos_t next_distance;
 282
 283         if (!_session) {
 284                 return;
 285         }
 286
 287         RegionSelection rs = get_regions_from_selection_and_entered ();
 288
 289         if (!force_playhead && !rs.empty()) {
 290
 291                 begin_reversible_command (_("nudge regions forward"));
 292
 293                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 294                         boost::shared_ptr<Region> r ((*i)->region());
 295
 296                         distance = get_nudge_distance (r->position(), next_distance);
 297
 298                         if (next) {
 299                                 distance = next_distance;
 300                         }
 301
 302                         r->clear_changes ();
 303                         r->set_position (r->position() + distance);
 304                         _session->add_command (new StatefulDiffCommand (r));
 305                 }
 306
 307                 commit_reversible_command ();
 308
 309
 310         } else if (!force_playhead && !selection->markers.empty()) {
 311
 312                 bool is_start;
 313
 314                 begin_reversible_command (_("nudge location forward"));
 315
 316                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 317
 318                         Location* loc = find_location_from_marker ((*i), is_start);
 319
 320                         if (loc) {
 321
 322                                 XMLNode& before (loc->get_state());
 323
 324                                 if (is_start) {
 325                                         distance = get_nudge_distance (loc->start(), next_distance);
 326                                         if (next) {
 327                                                 distance = next_distance;
 328                                         }
 329                                         if (max_framepos - distance > loc->start() + loc->length()) {
 330                                                 loc->set_start (loc->start() + distance);
 331                                         } else {
 332                                                 loc->set_start (max_framepos - loc->length());
 333                                         }
 334                                 } else {
 335                                         distance = get_nudge_distance (loc->end(), next_distance);
 336                                         if (next) {
 337                                                 distance = next_distance;
 338                                         }
 339                                         if (max_framepos - distance > loc->end()) {
 340                                                 loc->set_end (loc->end() + distance);
 341                                         } else {
 342                                                 loc->set_end (max_framepos);
 343                                         }
 344                                 }
 345                                 XMLNode& after (loc->get_state());
 346                                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 347                         }
 348                 }
 349
 350                 commit_reversible_command ();
 351
 352         } else {
 353                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 354                 _session->request_locate (playhead_cursor->current_frame + distance);
 355         }
 356 }
 357
 358 void
 359 Editor::nudge_backward (bool next, bool force_playhead)
 360 {
 361         framepos_t distance;
 362         framepos_t next_distance;
 363
 364         if (!_session) {
 365                 return;
 366         }
 367
 368         RegionSelection rs = get_regions_from_selection_and_entered ();
 369
 370         if (!force_playhead && !rs.empty()) {
 371
 372                 begin_reversible_command (_("nudge regions backward"));
 373
 374                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 375                         boost::shared_ptr<Region> r ((*i)->region());
 376
 377                         distance = get_nudge_distance (r->position(), next_distance);
 378
 379                         if (next) {
 380                                 distance = next_distance;
 381                         }
 382
 383                         r->clear_changes ();
 384
 385                         if (r->position() > distance) {
 386                                 r->set_position (r->position() - distance);
 387                         } else {
 388                                 r->set_position (0);
 389                         }
 390                         _session->add_command (new StatefulDiffCommand (r));
 391                 }
 392
 393                 commit_reversible_command ();
 394
 395         } else if (!force_playhead && !selection->markers.empty()) {
 396
 397                 bool is_start;
 398
 399                 begin_reversible_command (_("nudge location forward"));
 400
 401                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 402
 403                         Location* loc = find_location_from_marker ((*i), is_start);
 404
 405                         if (loc) {
 406
 407                                 XMLNode& before (loc->get_state());
 408
 409                                 if (is_start) {
 410                                         distance = get_nudge_distance (loc->start(), next_distance);
 411                                         if (next) {
 412                                                 distance = next_distance;
 413                                         }
 414                                         if (distance < loc->start()) {
 415                                                 loc->set_start (loc->start() - distance);
 416                                         } else {
 417                                                 loc->set_start (0);
 418                                         }
 419                                 } else {
 420                                         distance = get_nudge_distance (loc->end(), next_distance);
 421
 422                                         if (next) {
 423                                                 distance = next_distance;
 424                                         }
 425
 426                                         if (distance < loc->end() - loc->length()) {
 427                                                 loc->set_end (loc->end() - distance);
 428                                         } else {
 429                                                 loc->set_end (loc->length());
 430                                         }
 431                                 }
 432
 433                                 XMLNode& after (loc->get_state());
 434                                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 435                         }
 436                 }
 437
 438                 commit_reversible_command ();
 439
 440         } else {
 441
 442                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 443
 444                 if (playhead_cursor->current_frame > distance) {
 445                         _session->request_locate (playhead_cursor->current_frame - distance);
 446                 } else {
 447                         _session->goto_start();
 448                 }
 449         }
 450 }
 451
 452 void
 453 Editor::nudge_forward_capture_offset ()
 454 {
 455         RegionSelection rs = get_regions_from_selection_and_entered ();
 456
 457         if (!_session || rs.empty()) {
 458                 return;
 459         }
 460
 461         begin_reversible_command (_("nudge forward"));
 462
 463         framepos_t const distance = _session->worst_output_latency();
 464
 465         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 466                 boost::shared_ptr<Region> r ((*i)->region());
 467
 468                 r->clear_changes ();
 469                 r->set_position (r->position() + distance);
 470                 _session->add_command(new StatefulDiffCommand (r));
 471         }
 472
 473         commit_reversible_command ();
 474 }
 475
 476 void
 477 Editor::nudge_backward_capture_offset ()
 478 {
 479         RegionSelection rs = get_regions_from_selection_and_entered ();
 480
 481         if (!_session || rs.empty()) {
 482                 return;
 483         }
 484
 485         begin_reversible_command (_("nudge forward"));
 486
 487         framepos_t const distance = _session->worst_output_latency();
 488
 489         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 490                 boost::shared_ptr<Region> r ((*i)->region());
 491
 492                 r->clear_changes ();
 493
 494                 if (r->position() > distance) {
 495                         r->set_position (r->position() - distance);
 496                 } else {
 497                         r->set_position (0);
 498                 }
 499                 _session->add_command(new StatefulDiffCommand (r));
 500         }
 501
 502         commit_reversible_command ();
 503 }
 504
 505 /* DISPLAY MOTION */
 506
 507 void
 508 Editor::move_to_start ()
 509 {
 510         _session->goto_start ();
 511 }
 512
 513 void
 514 Editor::move_to_end ()
 515 {
 516
 517         _session->request_locate (_session->current_end_frame());
 518 }
 519
 520 void
 521 Editor::build_region_boundary_cache ()
 522 {
 523         framepos_t pos = 0;
 524         vector<RegionPoint> interesting_points;
 525         boost::shared_ptr<Region> r;
 526         TrackViewList tracks;
 527         bool at_end = false;
 528
 529         region_boundary_cache.clear ();
 530
 531         if (_session == 0) {
 532                 return;
 533         }
 534
 535         switch (_snap_type) {
 536         case SnapToRegionStart:
 537                 interesting_points.push_back (Start);
 538                 break;
 539         case SnapToRegionEnd:
 540                 interesting_points.push_back (End);
 541                 break;
 542         case SnapToRegionSync:
 543                 interesting_points.push_back (SyncPoint);
 544                 break;
 545         case SnapToRegionBoundary:
 546                 interesting_points.push_back (Start);
 547                 interesting_points.push_back (End);
 548                 break;
 549         default:
 550                 fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), _snap_type) << endmsg;
 551                 /*NOTREACHED*/
 552                 return;
 553         }
 554
 555         TimeAxisView *ontrack = 0;
 556         TrackViewList tlist;
 557
 558         if (!selection->tracks.empty()) {
 559                 tlist = selection->tracks;
 560         } else {
 561                 tlist = track_views;
 562         }
 563
 564         while (pos < _session->current_end_frame() && !at_end) {
 565
 566                 framepos_t rpos;
 567                 framepos_t lpos = max_framepos;
 568
 569                 for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 570
 571                         if ((r = find_next_region (pos, *p, 1, tlist, &ontrack)) == 0) {
 572                                 if (*p == interesting_points.back()) {
 573                                         at_end = true;
 574                                 }
 575                                 /* move to next point type */
 576                                 continue;
 577                         }
 578
 579                         switch (*p) {
 580                         case Start:
 581                                 rpos = r->first_frame();
 582                                 break;
 583
 584                         case End:
 585                                 rpos = r->last_frame();
 586                                 break;
 587
 588                         case SyncPoint:
 589                                 rpos = r->sync_position ();
 590                                 break;
 591
 592                         default:
 593                                 break;
 594                         }
 595
 596                         float speed = 1.0f;
 597                         RouteTimeAxisView *rtav;
 598
 599                         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 600                                 if (rtav->track() != 0) {
 601                                         speed = rtav->track()->speed();
 602                                 }
 603                         }
 604
 605                         rpos = track_frame_to_session_frame (rpos, speed);
 606
 607                         if (rpos < lpos) {
 608                                 lpos = rpos;
 609                         }
 610
 611                         /* prevent duplicates, but we don't use set<> because we want to be able
 612                            to sort later.
 613                         */
 614
 615                         vector<framepos_t>::iterator ri;
 616
 617                         for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
 618                                 if (*ri == rpos) {
 619                                         break;
 620                                 }
 621                         }
 622
 623                         if (ri == region_boundary_cache.end()) {
 624                                 region_boundary_cache.push_back (rpos);
 625                         }
 626                 }
 627
 628                 pos = lpos + 1;
 629         }
 630
 631         /* finally sort to be sure that the order is correct */
 632
 633         sort (region_boundary_cache.begin(), region_boundary_cache.end());
 634 }
 635
 636 boost::shared_ptr<Region>
 637 Editor::find_next_region (framepos_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 638 {
 639         TrackViewList::iterator i;
 640         framepos_t closest = max_framepos;
 641         boost::shared_ptr<Region> ret;
 642         framepos_t rpos = 0;
 643
 644         float track_speed;
 645         framepos_t track_frame;
 646         RouteTimeAxisView *rtav;
 647
 648         for (i = tracks.begin(); i != tracks.end(); ++i) {
 649
 650                 framecnt_t distance;
 651                 boost::shared_ptr<Region> r;
 652
 653                 track_speed = 1.0f;
 654                 if ( (rtav = dynamic_cast<RouteTimeAxisView*>(*i)) != 0 ) {
 655                         if (rtav->track()!=0)
 656                                 track_speed = rtav->track()->speed();
 657                 }
 658
 659                 track_frame = session_frame_to_track_frame(frame, track_speed);
 660
 661                 if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
 662                         continue;
 663                 }
 664
 665                 switch (point) {
 666                 case Start:
 667                         rpos = r->first_frame ();
 668                         break;
 669
 670                 case End:
 671                         rpos = r->last_frame ();
 672                         break;
 673
 674                 case SyncPoint:
 675                         rpos = r->sync_position ();
 676                         break;
 677                 }
 678
 679                 // rpos is a "track frame", converting it to "_session frame"
 680                 rpos = track_frame_to_session_frame(rpos, track_speed);
 681
 682                 if (rpos > frame) {
 683                         distance = rpos - frame;
 684                 } else {
 685                         distance = frame - rpos;
 686                 }
 687
 688                 if (distance < closest) {
 689                         closest = distance;
 690                         if (ontrack != 0)
 691                                 *ontrack = (*i);
 692                         ret = r;
 693                 }
 694         }
 695
 696         return ret;
 697 }
 698
 699 framepos_t
 700 Editor::find_next_region_boundary (framepos_t pos, int32_t dir, const TrackViewList& tracks)
 701 {
 702         framecnt_t distance = max_framepos;
 703         framepos_t current_nearest = -1;
 704
 705         for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
 706                 framepos_t contender;
 707                 framecnt_t d;
 708
 709                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 710
 711                 if (!rtv) {
 712                         continue;
 713                 }
 714
 715                 if ((contender = rtv->find_next_region_boundary (pos, dir)) < 0) {
 716                         continue;
 717                 }
 718
 719                 d = ::llabs (pos - contender);
 720
 721                 if (d < distance) {
 722                         current_nearest = contender;
 723                         distance = d;
 724                 }
 725         }
 726
 727         return current_nearest;
 728 }
 729
 730 framepos_t
 731 Editor::get_region_boundary (framepos_t pos, int32_t dir, bool with_selection, bool only_onscreen)
 732 {
 733         framepos_t target;
 734         TrackViewList tvl;
 735
 736         if (with_selection && Config->get_region_boundaries_from_selected_tracks()) {
 737
 738                 if (!selection->tracks.empty()) {
 739
 740                         target = find_next_region_boundary (pos, dir, selection->tracks);
 741
 742                 } else {
 743
 744                         if (only_onscreen || Config->get_region_boundaries_from_onscreen_tracks()) {
 745                                 get_onscreen_tracks (tvl);
 746                                 target = find_next_region_boundary (pos, dir, tvl);
 747                         } else {
 748                                 target = find_next_region_boundary (pos, dir, track_views);
 749                         }
 750                 }
 751
 752         } else {
 753
 754                 if (only_onscreen || Config->get_region_boundaries_from_onscreen_tracks()) {
 755                         get_onscreen_tracks (tvl);
 756                         target = find_next_region_boundary (pos, dir, tvl);
 757                 } else {
 758                         target = find_next_region_boundary (pos, dir, track_views);
 759                 }
 760         }
 761
 762         return target;
 763 }
 764
 765 void
 766 Editor::cursor_to_region_boundary (bool with_selection, int32_t dir)
 767 {
 768         framepos_t pos = playhead_cursor->current_frame;
 769         framepos_t target;
 770
 771         if (!_session) {
 772                 return;
 773         }
 774
 775         // so we don't find the current region again..
 776         if (dir > 0 || pos > 0) {
 777                 pos += dir;
 778         }
 779
 780         if ((target = get_region_boundary (pos, dir, with_selection, false)) < 0) {
 781                 return;
 782         }
 783
 784         _session->request_locate (target);
 785 }
 786
 787 void
 788 Editor::cursor_to_next_region_boundary (bool with_selection)
 789 {
 790         cursor_to_region_boundary (with_selection, 1);
 791 }
 792
 793 void
 794 Editor::cursor_to_previous_region_boundary (bool with_selection)
 795 {
 796         cursor_to_region_boundary (with_selection, -1);
 797 }
 798
 799 void
 800 Editor::cursor_to_region_point (EditorCursor* cursor, RegionPoint point, int32_t dir)
 801 {
 802         boost::shared_ptr<Region> r;
 803         framepos_t pos = cursor->current_frame;
 804
 805         if (!_session) {
 806                 return;
 807         }
 808
 809         TimeAxisView *ontrack = 0;
 810
 811         // so we don't find the current region again..
 812         if (dir>0 || pos>0)
 813                 pos+=dir;
 814
 815         if (!selection->tracks.empty()) {
 816
 817                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
 818
 819         } else if (clicked_axisview) {
 820
 821                 TrackViewList t;
 822                 t.push_back (clicked_axisview);
 823
 824                 r = find_next_region (pos, point, dir, t, &ontrack);
 825
 826         } else {
 827
 828                 r = find_next_region (pos, point, dir, track_views, &ontrack);
 829         }
 830
 831         if (r == 0) {
 832                 return;
 833         }
 834
 835         switch (point) {
 836         case Start:
 837                 pos = r->first_frame ();
 838                 break;
 839
 840         case End:
 841                 pos = r->last_frame ();
 842                 break;
 843
 844         case SyncPoint:
 845                 pos = r->sync_position ();
 846                 break;
 847         }
 848
 849         float speed = 1.0f;
 850         RouteTimeAxisView *rtav;
 851
 852         if ( ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 853                 if (rtav->track() != 0) {
 854                         speed = rtav->track()->speed();
 855                 }
 856         }
 857
 858         pos = track_frame_to_session_frame(pos, speed);
 859
 860         if (cursor == playhead_cursor) {
 861                 _session->request_locate (pos);
 862         } else {
 863                 cursor->set_position (pos);
 864         }
 865 }
 866
 867 void
 868 Editor::cursor_to_next_region_point (EditorCursor* cursor, RegionPoint point)
 869 {
 870         cursor_to_region_point (cursor, point, 1);
 871 }
 872
 873 void
 874 Editor::cursor_to_previous_region_point (EditorCursor* cursor, RegionPoint point)
 875 {
 876         cursor_to_region_point (cursor, point, -1);
 877 }
 878
 879 void
 880 Editor::cursor_to_selection_start (EditorCursor *cursor)
 881 {
 882         framepos_t pos = 0;
 883
 884         switch (mouse_mode) {
 885         case MouseObject:
 886                 if (!selection->regions.empty()) {
 887                         pos = selection->regions.start();
 888                 }
 889                 break;
 890
 891         case MouseRange:
 892                 if (!selection->time.empty()) {
 893                         pos = selection->time.start ();
 894                 }
 895                 break;
 896
 897         default:
 898                 return;
 899         }
 900
 901         if (cursor == playhead_cursor) {
 902                 _session->request_locate (pos);
 903         } else {
 904                 cursor->set_position (pos);
 905         }
 906 }
 907
 908 void
 909 Editor::cursor_to_selection_end (EditorCursor *cursor)
 910 {
 911         framepos_t pos = 0;
 912
 913         switch (mouse_mode) {
 914         case MouseObject:
 915                 if (!selection->regions.empty()) {
 916                         pos = selection->regions.end_frame();
 917                 }
 918                 break;
 919
 920         case MouseRange:
 921                 if (!selection->time.empty()) {
 922                         pos = selection->time.end_frame ();
 923                 }
 924                 break;
 925
 926         default:
 927                 return;
 928         }
 929
 930         if (cursor == playhead_cursor) {
 931                 _session->request_locate (pos);
 932         } else {
 933                 cursor->set_position (pos);
 934         }
 935 }
 936
 937 void
 938 Editor::selected_marker_to_region_boundary (bool with_selection, int32_t dir)
 939 {
 940         framepos_t target;
 941         Location* loc;
 942         bool ignored;
 943
 944         if (!_session) {
 945                 return;
 946         }
 947
 948         if (selection->markers.empty()) {
 949                 framepos_t mouse;
 950                 bool ignored;
 951
 952                 if (!mouse_frame (mouse, ignored)) {
 953                         return;
 954                 }
 955
 956                 add_location_mark (mouse);
 957         }
 958
 959         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
 960                 return;
 961         }
 962
 963         framepos_t pos = loc->start();
 964
 965         // so we don't find the current region again..
 966         if (dir > 0 || pos > 0) {
 967                 pos += dir;
 968         }
 969
 970         if ((target = get_region_boundary (pos, dir, with_selection, false)) < 0) {
 971                 return;
 972         }
 973
 974         loc->move_to (target);
 975 }
 976
 977 void
 978 Editor::selected_marker_to_next_region_boundary (bool with_selection)
 979 {
 980         selected_marker_to_region_boundary (with_selection, 1);
 981 }
 982
 983 void
 984 Editor::selected_marker_to_previous_region_boundary (bool with_selection)
 985 {
 986         selected_marker_to_region_boundary (with_selection, -1);
 987 }
 988
 989 void
 990 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
 991 {
 992         boost::shared_ptr<Region> r;
 993         framepos_t pos;
 994         Location* loc;
 995         bool ignored;
 996
 997         if (!_session || selection->markers.empty()) {
 998                 return;
 999         }
1000
1001         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1002                 return;
1003         }
1004
1005         TimeAxisView *ontrack = 0;
1006
1007         pos = loc->start();
1008
1009         // so we don't find the current region again..
1010         if (dir>0 || pos>0)
1011                 pos+=dir;
1012
1013         if (!selection->tracks.empty()) {
1014
1015                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1016
1017         } else {
1018
1019                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1020         }
1021
1022         if (r == 0) {
1023                 return;
1024         }
1025
1026         switch (point) {
1027         case Start:
1028                 pos = r->first_frame ();
1029                 break;
1030
1031         case End:
1032                 pos = r->last_frame ();
1033                 break;
1034
1035         case SyncPoint:
1036                 pos = r->adjust_to_sync (r->first_frame());
1037                 break;
1038         }
1039
1040         float speed = 1.0f;
1041         RouteTimeAxisView *rtav;
1042
1043         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0) {
1044                 if (rtav->track() != 0) {
1045                         speed = rtav->track()->speed();
1046                 }
1047         }
1048
1049         pos = track_frame_to_session_frame(pos, speed);
1050
1051         loc->move_to (pos);
1052 }
1053
1054 void
1055 Editor::selected_marker_to_next_region_point (RegionPoint point)
1056 {
1057         selected_marker_to_region_point (point, 1);
1058 }
1059
1060 void
1061 Editor::selected_marker_to_previous_region_point (RegionPoint point)
1062 {
1063         selected_marker_to_region_point (point, -1);
1064 }
1065
1066 void
1067 Editor::selected_marker_to_selection_start ()
1068 {
1069         framepos_t pos = 0;
1070         Location* loc;
1071         bool ignored;
1072
1073         if (!_session || selection->markers.empty()) {
1074                 return;
1075         }
1076
1077         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1078                 return;
1079         }
1080
1081         switch (mouse_mode) {
1082         case MouseObject:
1083                 if (!selection->regions.empty()) {
1084                         pos = selection->regions.start();
1085                 }
1086                 break;
1087
1088         case MouseRange:
1089                 if (!selection->time.empty()) {
1090                         pos = selection->time.start ();
1091                 }
1092                 break;
1093
1094         default:
1095                 return;
1096         }
1097
1098         loc->move_to (pos);
1099 }
1100
1101 void
1102 Editor::selected_marker_to_selection_end ()
1103 {
1104         framepos_t pos = 0;
1105         Location* loc;
1106         bool ignored;
1107
1108         if (!_session || selection->markers.empty()) {
1109                 return;
1110         }
1111
1112         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1113                 return;
1114         }
1115
1116         switch (mouse_mode) {
1117         case MouseObject:
1118                 if (!selection->regions.empty()) {
1119                         pos = selection->regions.end_frame();
1120                 }
1121                 break;
1122
1123         case MouseRange:
1124                 if (!selection->time.empty()) {
1125                         pos = selection->time.end_frame ();
1126                 }
1127                 break;
1128
1129         default:
1130                 return;
1131         }
1132
1133         loc->move_to (pos);
1134 }
1135
1136 void
1137 Editor::scroll_playhead (bool forward)
1138 {
1139         framepos_t pos = playhead_cursor->current_frame;
1140         framecnt_t delta = (framecnt_t) floor (current_page_frames() / 0.8);
1141
1142         if (forward) {
1143                 if (pos == max_framepos) {
1144                         return;
1145                 }
1146
1147                 if (pos < max_framepos - delta) {
1148                         pos += delta ;
1149                 } else {
1150                         pos = max_framepos;
1151                 }
1152
1153         } else {
1154
1155                 if (pos == 0) {
1156                         return;
1157                 }
1158
1159                 if (pos > delta) {
1160                         pos -= delta;
1161                 } else {
1162                         pos = 0;
1163                 }
1164         }
1165
1166         _session->request_locate (pos);
1167 }
1168
1169 void
1170 Editor::cursor_align (bool playhead_to_edit)
1171 {
1172         if (!_session) {
1173                 return;
1174         }
1175
1176         if (playhead_to_edit) {
1177
1178                 if (selection->markers.empty()) {
1179                         return;
1180                 }
1181
1182                 _session->request_locate (selection->markers.front()->position(), _session->transport_rolling());
1183
1184         } else {
1185                 /* move selected markers to playhead */
1186
1187                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
1188                         bool ignored;
1189
1190                         Location* loc = find_location_from_marker (*i, ignored);
1191
1192                         if (loc->is_mark()) {
1193                                 loc->set_start (playhead_cursor->current_frame);
1194                         } else {
1195                                 loc->set (playhead_cursor->current_frame,
1196                                           playhead_cursor->current_frame + loc->length());
1197                         }
1198                 }
1199         }
1200 }
1201
1202 void
1203 Editor::scroll_backward (float pages)
1204 {
1205         framepos_t const one_page = (framepos_t) rint (_canvas_width * frames_per_unit);
1206         framepos_t const cnt = (framepos_t) floor (pages * one_page);
1207
1208         framepos_t frame;
1209         if (leftmost_frame < cnt) {
1210                 frame = 0;
1211         } else {
1212                 frame = leftmost_frame - cnt;
1213         }
1214
1215         reset_x_origin (frame);
1216 }
1217
1218 void
1219 Editor::scroll_forward (float pages)
1220 {
1221         framepos_t const one_page = (framepos_t) rint (_canvas_width * frames_per_unit);
1222         framepos_t const cnt = (framepos_t) floor (pages * one_page);
1223
1224         framepos_t frame;
1225         if (max_framepos - cnt < leftmost_frame) {
1226                 frame = max_framepos - cnt;
1227         } else {
1228                 frame = leftmost_frame + cnt;
1229         }
1230
1231         reset_x_origin (frame);
1232 }
1233
1234 void
1235 Editor::scroll_tracks_down ()
1236 {
1237         double vert_value = vertical_adjustment.get_value() + vertical_adjustment.get_page_size();
1238         if (vert_value > vertical_adjustment.get_upper() - _canvas_height) {
1239                 vert_value = vertical_adjustment.get_upper() - _canvas_height;
1240         }
1241
1242         vertical_adjustment.set_value (vert_value);
1243 }
1244
1245 void
1246 Editor::scroll_tracks_up ()
1247 {
1248         vertical_adjustment.set_value (vertical_adjustment.get_value() - vertical_adjustment.get_page_size());
1249 }
1250
1251 void
1252 Editor::scroll_tracks_down_line ()
1253 {
1254         double vert_value = vertical_adjustment.get_value() + 60;
1255
1256         if (vert_value > vertical_adjustment.get_upper() - _canvas_height) {
1257                 vert_value = vertical_adjustment.get_upper() - _canvas_height;
1258         }
1259
1260         vertical_adjustment.set_value (vert_value);
1261 }
1262
1263 void
1264 Editor::scroll_tracks_up_line ()
1265 {
1266         reset_y_origin (vertical_adjustment.get_value() - 60);
1267 }
1268
1269 /* ZOOM */
1270
1271 void
1272 Editor::tav_zoom_step (bool coarser)
1273 {
1274         ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, coarser)
1275
1276         _routes->suspend_redisplay ();
1277
1278         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
1279                 TimeAxisView *tv = (static_cast<TimeAxisView*>(*i));
1280                         tv->step_height (coarser);
1281         }
1282
1283         _routes->resume_redisplay ();
1284 }
1285
1286 void
1287 Editor::temporal_zoom_step (bool coarser)
1288 {
1289         ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, coarser)
1290
1291         double nfpu;
1292
1293         nfpu = frames_per_unit;
1294
1295         if (coarser) {
1296                 nfpu *= 1.61803399;
1297         } else {
1298                 nfpu = max(1.0,(nfpu/1.61803399));
1299         }
1300
1301         temporal_zoom (nfpu);
1302 }
1303
1304 void
1305 Editor::temporal_zoom (gdouble fpu)
1306 {
1307         if (!_session) return;
1308
1309         framepos_t current_page = current_page_frames();
1310         framepos_t current_leftmost = leftmost_frame;
1311         framepos_t current_rightmost;
1312         framepos_t current_center;
1313         framepos_t new_page_size;
1314         framepos_t half_page_size;
1315         framepos_t leftmost_after_zoom = 0;
1316         framepos_t where;
1317         bool in_track_canvas;
1318         double nfpu;
1319         double l;
1320
1321         /* XXX this limit is also in ::set_frames_per_unit() */
1322
1323         if (frames_per_unit <= 1.0 && fpu <= frames_per_unit) {
1324                 return;
1325         }
1326
1327         nfpu = fpu;
1328
1329         new_page_size = (framepos_t) floor (_canvas_width * nfpu);
1330         half_page_size = new_page_size / 2;
1331
1332         switch (zoom_focus) {
1333         case ZoomFocusLeft:
1334                 leftmost_after_zoom = current_leftmost;
1335                 break;
1336
1337         case ZoomFocusRight:
1338                 current_rightmost = leftmost_frame + current_page;
1339                 if (current_rightmost < new_page_size) {
1340                         leftmost_after_zoom = 0;
1341                 } else {
1342                         leftmost_after_zoom = current_rightmost - new_page_size;
1343                 }
1344                 break;
1345
1346         case ZoomFocusCenter:
1347                 current_center = current_leftmost + (current_page/2);
1348                 if (current_center < half_page_size) {
1349                         leftmost_after_zoom = 0;
1350                 } else {
1351                         leftmost_after_zoom = current_center - half_page_size;
1352                 }
1353                 break;
1354
1355         case ZoomFocusPlayhead:
1356                 /* centre playhead */
1357                 l = playhead_cursor->current_frame - (new_page_size * 0.5);
1358
1359                 if (l < 0) {
1360                         leftmost_after_zoom = 0;
1361                 } else if (l > max_framepos) {
1362                         leftmost_after_zoom = max_framepos - new_page_size;
1363                 } else {
1364                         leftmost_after_zoom = (framepos_t) l;
1365                 }
1366                 break;
1367
1368         case ZoomFocusMouse:
1369                 /* try to keep the mouse over the same point in the display */
1370
1371                 if (!mouse_frame (where, in_track_canvas)) {
1372                         /* use playhead instead */
1373                         where = playhead_cursor->current_frame;
1374
1375                         if (where < half_page_size) {
1376                                 leftmost_after_zoom = 0;
1377                         } else {
1378                                 leftmost_after_zoom = where - half_page_size;
1379                         }
1380
1381                 } else {
1382
1383                         l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1384
1385                         if (l < 0) {
1386                                 leftmost_after_zoom = 0;
1387                         } else if (l > max_framepos) {
1388                                 leftmost_after_zoom = max_framepos - new_page_size;
1389                         } else {
1390                                 leftmost_after_zoom = (framepos_t) l;
1391                         }
1392                 }
1393
1394                 break;
1395
1396         case ZoomFocusEdit:
1397                 /* try to keep the edit point in the same place */
1398                 where = get_preferred_edit_position ();
1399
1400                 if (where > 0) {
1401
1402                         double l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1403
1404                         if (l < 0) {
1405                                 leftmost_after_zoom = 0;
1406                         } else if (l > max_framepos) {
1407                                 leftmost_after_zoom = max_framepos - new_page_size;
1408                         } else {
1409                                 leftmost_after_zoom = (framepos_t) l;
1410                         }
1411
1412                 } else {
1413                         /* edit point not defined */
1414                         return;
1415                 }
1416                 break;
1417
1418         }
1419
1420         // leftmost_after_zoom = min (leftmost_after_zoom, _session->current_end_frame());
1421
1422         reposition_and_zoom (leftmost_after_zoom, nfpu);
1423 }
1424
1425 void
1426 Editor::temporal_zoom_region (bool both_axes)
1427 {
1428         framepos_t start = max_framepos;
1429         framepos_t end = 0;
1430         set<TimeAxisView*> tracks;
1431
1432         RegionSelection rs = get_regions_from_selection_and_entered ();
1433
1434         if (rs.empty()) {
1435                 return;
1436         }
1437
1438         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
1439
1440                 if ((*i)->region()->position() < start) {
1441                         start = (*i)->region()->position();
1442                 }
1443
1444                 if ((*i)->region()->last_frame() + 1 > end) {
1445                         end = (*i)->region()->last_frame() + 1;
1446                 }
1447
1448                 tracks.insert (&((*i)->get_time_axis_view()));
1449         }
1450
1451         /* now comes an "interesting" hack ... make sure we leave a little space
1452            at each end of the editor so that the zoom doesn't fit the region
1453            precisely to the screen.
1454         */
1455
1456         GdkScreen* screen = gdk_screen_get_default ();
1457         gint pixwidth = gdk_screen_get_width (screen);
1458         gint mmwidth = gdk_screen_get_width_mm (screen);
1459         double pix_per_mm = (double) pixwidth/ (double) mmwidth;
1460         double one_centimeter_in_pixels = pix_per_mm * 10.0;
1461
1462         if ((start == 0 && end == 0) || end < start) {
1463                 return;
1464         }
1465
1466         framepos_t range = end - start;
1467         double new_fpu = (double)range / (double)_canvas_width;
1468         framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpu);
1469
1470         if (start > extra_samples) {
1471                 start -= extra_samples;
1472         } else {
1473                 start = 0;
1474         }
1475
1476         if (max_framepos - extra_samples > end) {
1477                 end += extra_samples;
1478         } else {
1479                 end = max_framepos;
1480         }
1481
1482         if (both_axes) {
1483                 /* save visual state with track states included, and prevent
1484                    set_frames_per_unit() from doing it again.
1485                 */
1486                 undo_visual_stack.push_back (current_visual_state(true));
1487                 no_save_visual = true;
1488         }
1489
1490         temporal_zoom_by_frame (start, end, "zoom to region");
1491
1492         if (both_axes) {
1493                 uint32_t per_track_height = (uint32_t) floor ((_canvas_height - canvas_timebars_vsize - 10.0) / tracks.size());
1494
1495                 /* set visible track heights appropriately */
1496
1497                 for (set<TimeAxisView*>::iterator t = tracks.begin(); t != tracks.end(); ++t) {
1498                         (*t)->set_height (per_track_height);
1499                 }
1500
1501                 /* hide irrelevant tracks */
1502
1503                 _routes->suspend_redisplay ();
1504
1505                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
1506                         if (find (tracks.begin(), tracks.end(), (*i)) == tracks.end()) {
1507                                 hide_track_in_display (*i);
1508                         }
1509                 }
1510
1511                 _routes->resume_redisplay ();
1512
1513                 vertical_adjustment.set_value (0.0);
1514                 no_save_visual = false;
1515         }
1516
1517         redo_visual_stack.push_back (current_visual_state());
1518 }
1519
1520 void
1521 Editor::zoom_to_region (bool both_axes)
1522 {
1523         temporal_zoom_region (both_axes);
1524 }
1525
1526 void
1527 Editor::temporal_zoom_selection ()
1528 {
1529         if (!selection) return;
1530
1531         if (selection->time.empty()) {
1532                 return;
1533         }
1534
1535         framepos_t start = selection->time[clicked_selection].start;
1536         framepos_t end = selection->time[clicked_selection].end;
1537
1538         temporal_zoom_by_frame (start, end, "zoom to selection");
1539 }
1540
1541 void
1542 Editor::temporal_zoom_session ()
1543 {
1544         ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_session)
1545
1546         if (_session) {
1547                 framecnt_t const l = _session->current_end_frame() - _session->current_start_frame();
1548                 double s = _session->current_start_frame() - l * 0.01;
1549                 if (s < 0) {
1550                         s = 0;
1551                 }
1552                 framecnt_t const e = _session->current_end_frame() + l * 0.01;
1553                 temporal_zoom_by_frame (framecnt_t (s), e, "zoom to _session");
1554         }
1555 }
1556
1557 void
1558 Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end, const string & /*op*/)
1559 {
1560         if (!_session) return;
1561
1562         if ((start == 0 && end == 0) || end < start) {
1563                 return;
1564         }
1565
1566         framepos_t range = end - start;
1567
1568         double new_fpu = (double)range / (double)_canvas_width;
1569
1570         framepos_t new_page = (framepos_t) floor (_canvas_width * new_fpu);
1571         framepos_t middle = (framepos_t) floor( (double)start + ((double)range / 2.0f ));
1572         framepos_t new_leftmost = (framepos_t) floor( (double)middle - ((double)new_page/2.0f));
1573
1574         if (new_leftmost > middle) {
1575                 new_leftmost = 0;
1576         }
1577
1578         reposition_and_zoom (new_leftmost, new_fpu);
1579 }
1580
1581 void
1582 Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
1583 {
1584         if (!_session) {
1585                 return;
1586         }
1587         double range_before = frame - leftmost_frame;
1588         double new_fpu;
1589
1590         new_fpu = frames_per_unit;
1591
1592         if (coarser) {
1593                 new_fpu *= 1.61803399;
1594                 range_before *= 1.61803399;
1595         } else {
1596                 new_fpu = max(1.0,(new_fpu/1.61803399));
1597                 range_before /= 1.61803399;
1598         }
1599
1600         if (new_fpu == frames_per_unit)  {
1601                 return;
1602         }
1603
1604         framepos_t new_leftmost = frame - (framepos_t)range_before;
1605
1606         if (new_leftmost > frame) {
1607                 new_leftmost = 0;
1608         }
1609
1610         if (new_leftmost < 0) {
1611                 new_leftmost = 0;
1612         }
1613
1614         reposition_and_zoom (new_leftmost, new_fpu);
1615 }
1616
1617
1618 bool
1619 Editor::choose_new_marker_name(string &name) {
1620
1621         if (!Config->get_name_new_markers()) {
1622                 /* don't prompt user for a new name */
1623                 return true;
1624         }
1625
1626         ArdourPrompter dialog (true);
1627
1628         dialog.set_prompt (_("New Name:"));
1629
1630         dialog.set_title (_("New Location Marker"));
1631
1632         dialog.set_name ("MarkNameWindow");
1633         dialog.set_size_request (250, -1);
1634         dialog.set_position (Gtk::WIN_POS_MOUSE);
1635
1636         dialog.add_button (Stock::OK, RESPONSE_ACCEPT);
1637         dialog.set_initial_text (name);
1638
1639         dialog.show ();
1640
1641         switch (dialog.run ()) {
1642         case RESPONSE_ACCEPT:
1643                 break;
1644         default:
1645                 return false;
1646         }
1647
1648         dialog.get_result(name);
1649         return true;
1650
1651 }
1652
1653
1654 void
1655 Editor::add_location_from_selection ()
1656 {
1657         string rangename;
1658
1659         if (selection->time.empty()) {
1660                 return;
1661         }
1662
1663         if (_session == 0 || clicked_axisview == 0) {
1664                 return;
1665         }
1666
1667         framepos_t start = selection->time[clicked_selection].start;
1668         framepos_t end = selection->time[clicked_selection].end;
1669
1670         _session->locations()->next_available_name(rangename,"selection");
1671         Location *location = new Location (*_session, start, end, rangename, Location::IsRangeMarker);
1672
1673         _session->begin_reversible_command (_("add marker"));
1674         XMLNode &before = _session->locations()->get_state();
1675         _session->locations()->add (location, true);
1676         XMLNode &after = _session->locations()->get_state();
1677         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1678         _session->commit_reversible_command ();
1679 }
1680
1681 void
1682 Editor::add_location_mark (framepos_t where)
1683 {
1684         string markername;
1685
1686         select_new_marker = true;
1687
1688         _session->locations()->next_available_name(markername,"mark");
1689         if (!choose_new_marker_name(markername)) {
1690                 return;
1691         }
1692         Location *location = new Location (*_session, where, where, markername, Location::IsMark);
1693         _session->begin_reversible_command (_("add marker"));
1694         XMLNode &before = _session->locations()->get_state();
1695         _session->locations()->add (location, true);
1696         XMLNode &after = _session->locations()->get_state();
1697         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1698         _session->commit_reversible_command ();
1699 }
1700
1701 void
1702 Editor::add_location_from_playhead_cursor ()
1703 {
1704         add_location_mark (_session->audible_frame());
1705 }
1706
1707 /** Add a range marker around each selected region */
1708 void
1709 Editor::add_locations_from_region ()
1710 {
1711         RegionSelection rs = get_regions_from_selection_and_entered ();
1712
1713         if (rs.empty()) {
1714                 return;
1715         }
1716
1717         _session->begin_reversible_command (selection->regions.size () > 1 ? _("add markers") : _("add marker"));
1718         XMLNode &before = _session->locations()->get_state();
1719
1720         for (RegionSelection::iterator i = rs.begin (); i != rs.end (); ++i) {
1721
1722                 boost::shared_ptr<Region> region = (*i)->region ();
1723
1724                 Location *location = new Location (*_session, region->position(), region->last_frame(), region->name(), Location::IsRangeMarker);
1725
1726                 _session->locations()->add (location, true);
1727         }
1728
1729         XMLNode &after = _session->locations()->get_state();
1730         _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1731         _session->commit_reversible_command ();
1732 }
1733
1734 /** Add a single range marker around all selected regions */
1735 void
1736 Editor::add_location_from_region ()
1737 {
1738         RegionSelection rs = get_regions_from_selection_and_entered ();
1739
1740         if (rs.empty()) {
1741                 return;
1742         }
1743
1744         _session->begin_reversible_command (_("add marker"));
1745         XMLNode &before = _session->locations()->get_state();
1746
1747         string markername;
1748
1749         if (rs.size() > 1) {
1750                 _session->locations()->next_available_name(markername, "regions");
1751         } else {
1752                 RegionView* rv = *(rs.begin());
1753                 boost::shared_ptr<Region> region = rv->region();
1754                 markername = region->name();
1755         }
1756
1757         if (!choose_new_marker_name(markername)) {
1758                 return;
1759         }
1760
1761         // single range spanning all selected
1762         Location *location = new Location (*_session, selection->regions.start(), selection->regions.end_frame(), markername, Location::IsRangeMarker);
1763         _session->locations()->add (location, true);
1764
1765         XMLNode &after = _session->locations()->get_state();
1766         _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1767         _session->commit_reversible_command ();
1768 }
1769
1770 /* MARKS */
1771
1772 void
1773 Editor::jump_forward_to_mark ()
1774 {
1775         if (!_session) {
1776                 return;
1777         }
1778
1779         Location *location = _session->locations()->first_location_after (playhead_cursor->current_frame);
1780
1781         if (location) {
1782                 _session->request_locate (location->start(), _session->transport_rolling());
1783         } else {
1784                 _session->request_locate (_session->current_end_frame());
1785         }
1786 }
1787
1788 void
1789 Editor::jump_backward_to_mark ()
1790 {
1791         if (!_session) {
1792                 return;
1793         }
1794
1795         Location *location = _session->locations()->first_location_before (playhead_cursor->current_frame);
1796
1797         if (location) {
1798                 _session->request_locate (location->start(), _session->transport_rolling());
1799         } else {
1800                 _session->goto_start ();
1801         }
1802 }
1803
1804 void
1805 Editor::set_mark ()
1806 {
1807         framepos_t const pos = _session->audible_frame ();
1808
1809         string markername;
1810         _session->locations()->next_available_name (markername, "mark");
1811
1812         if (!choose_new_marker_name (markername)) {
1813                 return;
1814         }
1815
1816         _session->locations()->add (new Location (*_session, pos, 0, markername, Location::IsMark), true);
1817 }
1818
1819 void
1820 Editor::clear_markers ()
1821 {
1822         if (_session) {
1823                 _session->begin_reversible_command (_("clear markers"));
1824                 XMLNode &before = _session->locations()->get_state();
1825                 _session->locations()->clear_markers ();
1826                 XMLNode &after = _session->locations()->get_state();
1827                 _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1828                 _session->commit_reversible_command ();
1829         }
1830 }
1831
1832 void
1833 Editor::clear_ranges ()
1834 {
1835         if (_session) {
1836                 _session->begin_reversible_command (_("clear ranges"));
1837                 XMLNode &before = _session->locations()->get_state();
1838
1839                 Location * looploc = _session->locations()->auto_loop_location();
1840                 Location * punchloc = _session->locations()->auto_punch_location();
1841
1842                 _session->locations()->clear_ranges ();
1843                 // re-add these
1844                 if (looploc) _session->locations()->add (looploc);
1845                 if (punchloc) _session->locations()->add (punchloc);
1846
1847                 XMLNode &after = _session->locations()->get_state();
1848                 _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1849                 _session->commit_reversible_command ();
1850         }
1851 }
1852
1853 void
1854 Editor::clear_locations ()
1855 {
1856         _session->begin_reversible_command (_("clear locations"));
1857         XMLNode &before = _session->locations()->get_state();
1858         _session->locations()->clear ();
1859         XMLNode &after = _session->locations()->get_state();
1860         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
1861         _session->commit_reversible_command ();
1862         _session->locations()->clear ();
1863 }
1864
1865 void
1866 Editor::unhide_markers ()
1867 {
1868         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
1869                 Location *l = (*i).first;
1870                 if (l->is_hidden() && l->is_mark()) {
1871                         l->set_hidden(false, this);
1872                 }
1873         }
1874 }
1875
1876 void
1877 Editor::unhide_ranges ()
1878 {
1879         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
1880                 Location *l = (*i).first;
1881                 if (l->is_hidden() && l->is_range_marker()) {
1882                         l->set_hidden(false, this);
1883                 }
1884         }
1885 }
1886
1887 /* INSERT/REPLACE */
1888
1889 void
1890 Editor::insert_region_list_drag (boost::shared_ptr<Region> region, int x, int y)
1891 {
1892         double wx, wy;
1893         double cx, cy;
1894         framepos_t where;
1895         RouteTimeAxisView *rtv = 0;
1896         boost::shared_ptr<Playlist> playlist;
1897
1898         track_canvas->window_to_world (x, y, wx, wy);
1899
1900         GdkEvent event;
1901         event.type = GDK_BUTTON_RELEASE;
1902         event.button.x = wx;
1903         event.button.y = wy;
1904
1905         where = event_frame (&event, &cx, &cy);
1906
1907         if (where < leftmost_frame || where > leftmost_frame + current_page_frames()) {
1908                 /* clearly outside canvas area */
1909                 return;
1910         }
1911
1912         std::pair<TimeAxisView*, int> tv = trackview_by_y_position (cy);
1913         if (tv.first == 0) {
1914                 return;
1915         }
1916
1917         if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv.first)) == 0) {
1918                 return;
1919         }
1920
1921         if ((playlist = rtv->playlist()) == 0) {
1922                 return;
1923         }
1924
1925         snap_to (where);
1926
1927         begin_reversible_command (_("insert dragged region"));
1928         playlist->clear_changes ();
1929         playlist->add_region (RegionFactory::create (region, true), where, 1.0);
1930         _session->add_command(new StatefulDiffCommand (playlist));
1931         commit_reversible_command ();
1932 }
1933
1934 void
1935 Editor::insert_route_list_drag (boost::shared_ptr<Route> route, int x, int y)
1936 {
1937         double wx, wy;
1938         double cx, cy;
1939         framepos_t where;
1940         RouteTimeAxisView *dest_rtv = 0;
1941         RouteTimeAxisView *source_rtv = 0;
1942
1943         track_canvas->window_to_world (x, y, wx, wy);
1944         wx += horizontal_position ();
1945         wy += vertical_adjustment.get_value();
1946
1947         GdkEvent event;
1948         event.type = GDK_BUTTON_RELEASE;
1949         event.button.x = wx;
1950         event.button.y = wy;
1951
1952         where = event_frame (&event, &cx, &cy);
1953
1954         std::pair<TimeAxisView*, int> const tv = trackview_by_y_position (cy);
1955         if (tv.first == 0) {
1956                 return;
1957         }
1958
1959         if ((dest_rtv = dynamic_cast<RouteTimeAxisView*> (tv.first)) == 0) {
1960                 return;
1961         }
1962
1963         /* use this drag source to add underlay to a track. But we really don't care
1964            about the Route, only the view of the route, so find it first */
1965         for(TrackViewList::iterator it = track_views.begin(); it != track_views.end(); ++it) {
1966                 if((source_rtv = dynamic_cast<RouteTimeAxisView*>(*it)) == 0) {
1967                         continue;
1968                 }
1969
1970                 if(source_rtv->route() == route && source_rtv != dest_rtv) {
1971                         dest_rtv->add_underlay(source_rtv->view());
1972                         break;
1973                 }
1974         }
1975 }
1976
1977 void
1978 Editor::insert_region_list_selection (float times)
1979 {
1980         RouteTimeAxisView *tv = 0;
1981         boost::shared_ptr<Playlist> playlist;
1982
1983         if (clicked_routeview != 0) {
1984                 tv = clicked_routeview;
1985         } else if (!selection->tracks.empty()) {
1986                 if ((tv = dynamic_cast<RouteTimeAxisView*>(selection->tracks.front())) == 0) {
1987                         return;
1988                 }
1989         } else if (entered_track != 0) {
1990                 if ((tv = dynamic_cast<RouteTimeAxisView*>(entered_track)) == 0) {
1991                         return;
1992                 }
1993         } else {
1994                 return;
1995         }
1996
1997         if ((playlist = tv->playlist()) == 0) {
1998                 return;
1999         }
2000
2001         boost::shared_ptr<Region> region = _regions->get_single_selection ();
2002         if (region == 0) {
2003                 return;
2004         }
2005
2006         begin_reversible_command (_("insert region"));
2007         playlist->clear_changes ();
2008         playlist->add_region ((RegionFactory::create (region, true)), get_preferred_edit_position(), times);
2009         _session->add_command(new StatefulDiffCommand (playlist));
2010         commit_reversible_command ();
2011 }
2012
2013 /* BUILT-IN EFFECTS */
2014
2015 void
2016 Editor::reverse_selection ()
2017 {
2018
2019 }
2020
2021 /* GAIN ENVELOPE EDITING */
2022
2023 void
2024 Editor::edit_envelope ()
2025 {
2026 }
2027
2028 /* PLAYBACK */
2029
2030 void
2031 Editor::transition_to_rolling (bool fwd)
2032 {
2033         if (!_session) {
2034                 return;
2035         }
2036
2037         if (_session->config.get_external_sync()) {
2038                 switch (_session->config.get_sync_source()) {
2039                 case JACK:
2040                         break;
2041                 default:
2042                         /* transport controlled by the master */
2043                         return;
2044                 }
2045         }
2046
2047         if (_session->is_auditioning()) {
2048                 _session->cancel_audition ();
2049                 return;
2050         }
2051
2052         _session->request_transport_speed (fwd ? 1.0f : -1.0f);
2053 }
2054
2055 void
2056 Editor::play_from_start ()
2057 {
2058         _session->request_locate (_session->current_start_frame(), true);
2059 }
2060
2061 void
2062 Editor::play_from_edit_point ()
2063 {
2064         _session->request_locate (get_preferred_edit_position(), true);
2065 }
2066
2067 void
2068 Editor::play_from_edit_point_and_return ()
2069 {
2070         framepos_t start_frame;
2071         framepos_t return_frame;
2072
2073         start_frame = get_preferred_edit_position (true);
2074
2075         if (_session->transport_rolling()) {
2076                 _session->request_locate (start_frame, false);
2077                 return;
2078         }
2079
2080         /* don't reset the return frame if its already set */
2081
2082         if ((return_frame = _session->requested_return_frame()) < 0) {
2083                 return_frame = _session->audible_frame();
2084         }
2085
2086         if (start_frame >= 0) {
2087                 _session->request_roll_at_and_return (start_frame, return_frame);
2088         }
2089 }
2090
2091 void
2092 Editor::play_selection ()
2093 {
2094         if (selection->time.empty()) {
2095                 return;
2096         }
2097
2098         _session->request_play_range (&selection->time, true);
2099 }
2100
2101 void
2102 Editor::play_location (Location& location)
2103 {
2104         if (location.start() <= location.end()) {
2105                 return;
2106         }
2107
2108         _session->request_bounded_roll (location.start(), location.end());
2109 }
2110
2111 void
2112 Editor::loop_location (Location& location)
2113 {
2114         if (location.start() <= location.end()) {
2115                 return;
2116         }
2117
2118         Location* tll;
2119
2120         if ((tll = transport_loop_location()) != 0) {
2121                 tll->set (location.start(), location.end());
2122
2123                 // enable looping, reposition and start rolling
2124                 _session->request_play_loop (true);
2125                 _session->request_locate (tll->start(), true);
2126         }
2127 }
2128
2129 void
2130 Editor::raise_region ()
2131 {
2132         selection->foreach_region (&Region::raise);
2133 }
2134
2135 void
2136 Editor::raise_region_to_top ()
2137 {
2138         selection->foreach_region (&Region::raise_to_top);
2139 }
2140
2141 void
2142 Editor::lower_region ()
2143 {
2144         selection->foreach_region (&Region::lower);
2145 }
2146
2147 void
2148 Editor::lower_region_to_bottom ()
2149 {
2150         selection->foreach_region (&Region::lower_to_bottom);
2151 }
2152
2153 /** Show the region editor for the selected regions */
2154 void
2155 Editor::show_region_properties ()
2156 {
2157         selection->foreach_regionview (&RegionView::show_region_editor);
2158 }
2159
2160 /** Show the midi list editor for the selected MIDI regions */
2161 void
2162 Editor::show_midi_list_editor ()
2163 {
2164         selection->foreach_midi_regionview (&MidiRegionView::show_list_editor);
2165 }
2166
2167 void
2168 Editor::rename_region ()
2169 {
2170         RegionSelection rs = get_regions_from_selection_and_entered ();
2171
2172         if (rs.empty()) {
2173                 return;
2174         }
2175
2176         ArdourDialog d (*this, _("Rename Region"), true, false);
2177         Entry entry;
2178         Label label (_("New name:"));
2179         HBox hbox;
2180
2181         hbox.set_spacing (6);
2182         hbox.pack_start (label, false, false);
2183         hbox.pack_start (entry, true, true);
2184
2185         d.get_vbox()->set_border_width (12);
2186         d.get_vbox()->pack_start (hbox, false, false);
2187
2188         d.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
2189         d.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
2190
2191         d.set_size_request (300, -1);
2192         d.set_position (Gtk::WIN_POS_MOUSE);
2193
2194         entry.set_text (selection->regions.front()->region()->name());
2195         entry.select_region (0, -1);
2196
2197         entry.signal_activate().connect (sigc::bind (sigc::mem_fun (d, &Dialog::response), RESPONSE_OK));
2198
2199         d.show_all ();
2200
2201         entry.grab_focus();
2202
2203         int const ret = d.run();
2204
2205         d.hide ();
2206
2207         if (ret != RESPONSE_OK) {
2208                 return;
2209         }
2210
2211         std::string str = entry.get_text();
2212         strip_whitespace_edges (str);
2213         if (!str.empty()) {
2214                 rs.front()->region()->set_name (str);
2215                 _regions->redisplay ();
2216         }
2217 }
2218
2219 void
2220 Editor::audition_playlist_region_via_route (boost::shared_ptr<Region> region, Route& route)
2221 {
2222         if (_session->is_auditioning()) {
2223                 _session->cancel_audition ();
2224         }
2225
2226         // note: some potential for creativity here, because region doesn't
2227         // have to belong to the playlist that Route is handling
2228
2229         // bool was_soloed = route.soloed();
2230
2231         route.set_solo (true, this);
2232
2233         _session->request_bounded_roll (region->position(), region->position() + region->length());
2234
2235         /* XXX how to unset the solo state ? */
2236 }
2237
2238 /** Start an audition of the first selected region */
2239 void
2240 Editor::play_edit_range ()
2241 {
2242         framepos_t start, end;
2243
2244         if (get_edit_op_range (start, end)) {
2245                 _session->request_bounded_roll (start, end);
2246         }
2247 }
2248
2249 void
2250 Editor::play_selected_region ()
2251 {
2252         framepos_t start = max_framepos;
2253         framepos_t end = 0;
2254
2255         RegionSelection rs = get_regions_from_selection_and_entered ();
2256
2257         if (rs.empty()) {
2258                 return;
2259         }
2260
2261         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2262                 if ((*i)->region()->position() < start) {
2263                         start = (*i)->region()->position();
2264                 }
2265                 if ((*i)->region()->last_frame() + 1 > end) {
2266                         end = (*i)->region()->last_frame() + 1;
2267                 }
2268         }
2269
2270         _session->request_bounded_roll (start, end);
2271 }
2272
2273 void
2274 Editor::audition_playlist_region_standalone (boost::shared_ptr<Region> region)
2275 {
2276         _session->audition_region (region);
2277 }
2278
2279 void
2280 Editor::region_from_selection ()
2281 {
2282         if (clicked_axisview == 0) {
2283                 return;
2284         }
2285
2286         if (selection->time.empty()) {
2287                 return;
2288         }
2289
2290         framepos_t start = selection->time[clicked_selection].start;
2291         framepos_t end = selection->time[clicked_selection].end;
2292
2293         TrackViewList tracks = get_tracks_for_range_action ();
2294
2295         framepos_t selection_cnt = end - start + 1;
2296
2297         for (TrackSelection::iterator i = tracks.begin(); i != tracks.end(); ++i) {
2298                 boost::shared_ptr<Region> current;
2299                 boost::shared_ptr<Playlist> pl;
2300                 framepos_t internal_start;
2301                 string new_name;
2302
2303                 if ((pl = (*i)->playlist()) == 0) {
2304                         continue;
2305                 }
2306
2307                 if ((current = pl->top_region_at (start)) == 0) {
2308                         continue;
2309                 }
2310
2311                 internal_start = start - current->position();
2312                 RegionFactory::region_name (new_name, current->name(), true);
2313
2314                 PropertyList plist;
2315
2316                 plist.add (ARDOUR::Properties::start, current->start() + internal_start);
2317                 plist.add (ARDOUR::Properties::length, selection_cnt);
2318                 plist.add (ARDOUR::Properties::name, new_name);
2319                 plist.add (ARDOUR::Properties::layer, 0);
2320
2321                 boost::shared_ptr<Region> region (RegionFactory::create (current, plist));
2322         }
2323 }
2324
2325 void
2326 Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_regions)
2327 {
2328         if (selection->time.empty() || selection->tracks.empty()) {
2329                 return;
2330         }
2331
2332         framepos_t start = selection->time[clicked_selection].start;
2333         framepos_t end = selection->time[clicked_selection].end;
2334
2335         sort_track_selection ();
2336
2337         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2338                 boost::shared_ptr<Region> current;
2339                 boost::shared_ptr<Playlist> playlist;
2340                 framepos_t internal_start;
2341                 string new_name;
2342
2343                 if ((playlist = (*i)->playlist()) == 0) {
2344                         continue;
2345                 }
2346
2347                 if ((current = playlist->top_region_at(start)) == 0) {
2348                         continue;
2349                 }
2350
2351                 internal_start = start - current->position();
2352                 RegionFactory::region_name (new_name, current->name(), true);
2353
2354                 PropertyList plist;
2355
2356                 plist.add (ARDOUR::Properties::start, current->start() + internal_start);
2357                 plist.add (ARDOUR::Properties::length, end - start + 1);
2358                 plist.add (ARDOUR::Properties::name, new_name);
2359
2360                 new_regions.push_back (RegionFactory::create (current, plist));
2361         }
2362 }
2363
2364 void
2365 Editor::split_multichannel_region ()
2366 {
2367         RegionSelection rs = get_regions_from_selection_and_entered ();
2368
2369         if (rs.empty()) {
2370                 return;
2371         }
2372
2373         vector< boost::shared_ptr<Region> > v;
2374
2375         for (list<RegionView*>::iterator x = rs.begin(); x != rs.end(); ++x) {
2376                 (*x)->region()->separate_by_channel (*_session, v);
2377         }
2378 }
2379
2380 void
2381 Editor::new_region_from_selection ()
2382 {
2383         region_from_selection ();
2384         cancel_selection ();
2385 }
2386
2387 static void
2388 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
2389 {
2390         switch (rv->region()->coverage (ar->start, ar->end - 1)) {
2391         case OverlapNone:
2392                 break;
2393         default:
2394                 rs->push_back (rv);
2395         }
2396 }
2397
2398 /** Return either:
2399  *    - selected tracks, or if there are none...
2400  *    - tracks containing selected regions, or if there are none...
2401  *    - all tracks
2402  * @return tracks.
2403  */
2404 TrackViewList
2405 Editor::get_tracks_for_range_action () const
2406 {
2407         TrackViewList t;
2408
2409         if (selection->tracks.empty()) {
2410
2411                 /* use tracks with selected regions */
2412
2413                 RegionSelection rs = selection->regions;
2414
2415                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2416                         TimeAxisView* tv = &(*i)->get_time_axis_view();
2417
2418                         if (!t.contains (tv)) {
2419                                 t.push_back (tv);
2420                         }
2421                 }
2422
2423                 if (t.empty()) {
2424                         /* no regions and no tracks: use all tracks */
2425                         t = track_views;
2426                 }
2427
2428         } else {
2429
2430                 t = selection->tracks;
2431         }
2432
2433         return t;
2434 }
2435
2436 void
2437 Editor::separate_regions_between (const TimeSelection& ts)
2438 {
2439         bool in_command = false;
2440         boost::shared_ptr<Playlist> playlist;
2441         RegionSelection new_selection;
2442
2443         TrackViewList tmptracks = get_tracks_for_range_action ();
2444         sort_track_selection (&tmptracks);
2445
2446         for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
2447
2448                 RouteTimeAxisView* rtv;
2449
2450                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2451
2452                         if (rtv->is_track()) {
2453
2454                                 /* no edits to destructive tracks */
2455
2456                                 if (rtv->track()->destructive()) {
2457                                         continue;
2458                                 }
2459
2460                                 if ((playlist = rtv->playlist()) != 0) {
2461
2462                                         playlist->clear_changes ();
2463
2464                                         /* XXX need to consider musical time selections here at some point */
2465
2466                                         double speed = rtv->track()->speed();
2467
2468
2469                                         for (list<AudioRange>::const_iterator t = ts.begin(); t != ts.end(); ++t) {
2470
2471                                                 sigc::connection c = rtv->view()->RegionViewAdded.connect (
2472                                                                 sigc::mem_fun(*this, &Editor::collect_new_region_view));
2473
2474                                                 latest_regionviews.clear ();
2475
2476                                                 playlist->partition ((framepos_t)((*t).start * speed),
2477                                                                 (framepos_t)((*t).end * speed), false);
2478
2479                                                 c.disconnect ();
2480
2481                                                 if (!latest_regionviews.empty()) {
2482
2483                                                         rtv->view()->foreach_regionview (sigc::bind (
2484                                                                                 sigc::ptr_fun (add_if_covered),
2485                                                                                 &(*t), &new_selection));
2486
2487                                                         if (!in_command) {
2488                                                                 begin_reversible_command (_("separate"));
2489                                                                 in_command = true;
2490                                                         }
2491
2492                                                         /* pick up changes to existing regions */
2493
2494                                                         vector<Command*> cmds;
2495                                                         playlist->rdiff (cmds);
2496                                                         _session->add_commands (cmds);
2497
2498                                                         /* pick up changes to the playlist itself (adds/removes)
2499                                                          */
2500
2501                                                         _session->add_command(new StatefulDiffCommand (playlist));
2502                                                 }
2503                                         }
2504                                 }
2505                         }
2506                 }
2507         }
2508
2509         if (in_command) {
2510                 selection->set (new_selection);
2511                 set_mouse_mode (MouseObject);
2512
2513                 commit_reversible_command ();
2514         }
2515 }
2516
2517 struct PlaylistState {
2518     boost::shared_ptr<Playlist> playlist;
2519     XMLNode*  before;
2520 };
2521
2522 /** Take tracks from get_tracks_for_range_action and cut any regions
2523  *  on those tracks so that the tracks are empty over the time
2524  *  selection.
2525  */
2526 void
2527 Editor::separate_region_from_selection ()
2528 {
2529         /* preferentially use *all* ranges in the time selection if we're in range mode
2530            to allow discontiguous operation, since get_edit_op_range() currently
2531            returns a single range.
2532         */
2533
2534         if (mouse_mode == MouseRange && !selection->time.empty()) {
2535
2536                 separate_regions_between (selection->time);
2537
2538         } else {
2539
2540                 framepos_t start;
2541                 framepos_t end;
2542
2543                 if (get_edit_op_range (start, end)) {
2544
2545                         AudioRange ar (start, end, 1);
2546                         TimeSelection ts;
2547                         ts.push_back (ar);
2548
2549                         separate_regions_between (ts);
2550                 }
2551         }
2552 }
2553
2554 void
2555 Editor::separate_region_from_punch ()
2556 {
2557         Location* loc  = _session->locations()->auto_punch_location();
2558         if (loc) {
2559                 separate_regions_using_location (*loc);
2560         }
2561 }
2562
2563 void
2564 Editor::separate_region_from_loop ()
2565 {
2566         Location* loc  = _session->locations()->auto_loop_location();
2567         if (loc) {
2568                 separate_regions_using_location (*loc);
2569         }
2570 }
2571
2572 void
2573 Editor::separate_regions_using_location (Location& loc)
2574 {
2575         if (loc.is_mark()) {
2576                 return;
2577         }
2578
2579         AudioRange ar (loc.start(), loc.end(), 1);
2580         TimeSelection ts;
2581
2582         ts.push_back (ar);
2583
2584         separate_regions_between (ts);
2585 }
2586
2587 /** Separate regions under the selected region */
2588 void
2589 Editor::separate_under_selected_regions ()
2590 {
2591         vector<PlaylistState> playlists;
2592
2593         RegionSelection rs;
2594
2595         rs = get_regions_from_selection_and_entered();
2596
2597         if (!_session || rs.empty()) {
2598                 return;
2599         }
2600
2601         begin_reversible_command (_("separate region under"));
2602
2603         list<boost::shared_ptr<Region> > regions_to_remove;
2604
2605         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2606                 // we can't just remove the region(s) in this loop because
2607                 // this removes them from the RegionSelection, and they thus
2608                 // disappear from underneath the iterator, and the ++i above
2609                 // SEGVs in a puzzling fashion.
2610
2611                 // so, first iterate over the regions to be removed from rs and
2612                 // add them to the regions_to_remove list, and then
2613                 // iterate over the list to actually remove them.
2614
2615                 regions_to_remove.push_back ((*i)->region());
2616         }
2617
2618         for (list<boost::shared_ptr<Region> >::iterator rl = regions_to_remove.begin(); rl != regions_to_remove.end(); ++rl) {
2619
2620                 boost::shared_ptr<Playlist> playlist = (*rl)->playlist();
2621
2622                 if (!playlist) {
2623                         // is this check necessary?
2624                         continue;
2625                 }
2626
2627                 vector<PlaylistState>::iterator i;
2628
2629                 //only take state if this is a new playlist.
2630                 for (i = playlists.begin(); i != playlists.end(); ++i) {
2631                         if ((*i).playlist == playlist) {
2632                                 break;
2633                         }
2634                 }
2635
2636                 if (i == playlists.end()) {
2637
2638                         PlaylistState before;
2639                         before.playlist = playlist;
2640                         before.before = &playlist->get_state();
2641
2642                         playlist->freeze ();
2643                         playlists.push_back(before);
2644                 }
2645
2646                 //Partition on the region bounds
2647                 playlist->partition ((*rl)->first_frame() - 1, (*rl)->last_frame() + 1, true);
2648
2649                 //Re-add region that was just removed due to the partition operation
2650                 playlist->add_region( (*rl), (*rl)->first_frame() );
2651         }
2652
2653         vector<PlaylistState>::iterator pl;
2654
2655         for (pl = playlists.begin(); pl != playlists.end(); ++pl) {
2656                 (*pl).playlist->thaw ();
2657                 _session->add_command(new MementoCommand<Playlist>(*(*pl).playlist, (*pl).before, &(*pl).playlist->get_state()));
2658         }
2659
2660         commit_reversible_command ();
2661 }
2662
2663 void
2664 Editor::crop_region_to_selection ()
2665 {
2666         if (!selection->time.empty()) {
2667
2668                 crop_region_to (selection->time.start(), selection->time.end_frame());
2669
2670         } else {
2671
2672                 framepos_t start;
2673                 framepos_t end;
2674
2675                 if (get_edit_op_range (start, end)) {
2676                         crop_region_to (start, end);
2677                 }
2678         }
2679
2680 }
2681
2682 void
2683 Editor::crop_region_to (framepos_t start, framepos_t end)
2684 {
2685         vector<boost::shared_ptr<Playlist> > playlists;
2686         boost::shared_ptr<Playlist> playlist;
2687         TrackViewList* ts;
2688
2689         if (selection->tracks.empty()) {
2690                 ts = &track_views;
2691         } else {
2692                 sort_track_selection ();
2693                 ts = &selection->tracks;
2694         }
2695
2696         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
2697
2698                 RouteTimeAxisView* rtv;
2699
2700                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2701
2702                         boost::shared_ptr<Track> t = rtv->track();
2703
2704                         if (t != 0 && ! t->destructive()) {
2705
2706                                 if ((playlist = rtv->playlist()) != 0) {
2707                                         playlists.push_back (playlist);
2708                                 }
2709                         }
2710                 }
2711         }
2712
2713         if (playlists.empty()) {
2714                 return;
2715         }
2716
2717         framepos_t the_start;
2718         framepos_t the_end;
2719         framepos_t cnt;
2720
2721         begin_reversible_command (_("trim to selection"));
2722
2723         for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
2724
2725                 boost::shared_ptr<Region> region;
2726
2727                 the_start = start;
2728
2729                 if ((region = (*i)->top_region_at(the_start)) == 0) {
2730                         continue;
2731                 }
2732
2733                 /* now adjust lengths to that we do the right thing
2734                    if the selection extends beyond the region
2735                 */
2736
2737                 the_start = max (the_start, (framepos_t) region->position());
2738                 if (max_framepos - the_start < region->length()) {
2739                         the_end = the_start + region->length() - 1;
2740                 } else {
2741                         the_end = max_framepos;
2742                 }
2743                 the_end = min (end, the_end);
2744                 cnt = the_end - the_start + 1;
2745
2746                 region->clear_changes ();
2747                 region->trim_to (the_start, cnt);
2748                 _session->add_command (new StatefulDiffCommand (region));
2749         }
2750
2751         commit_reversible_command ();
2752 }
2753
2754 void
2755 Editor::region_fill_track ()
2756 {
2757         RegionSelection rs = get_regions_from_selection_and_entered ();
2758
2759         if (!_session || rs.empty()) {
2760                 return;
2761         }
2762
2763         framepos_t const end = _session->current_end_frame ();
2764
2765         begin_reversible_command (Operations::region_fill);
2766
2767         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2768
2769                 boost::shared_ptr<Region> region ((*i)->region());
2770
2771                 boost::shared_ptr<Playlist> pl = region->playlist();
2772
2773                 if (end <= region->last_frame()) {
2774                         return;
2775                 }
2776
2777                 double times = (double) (end - region->last_frame()) / (double) region->length();
2778
2779                 if (times == 0) {
2780                         return;
2781                 }
2782
2783                 pl->clear_changes ();
2784                 pl->add_region (RegionFactory::create (region, true), region->last_frame(), times);
2785                 _session->add_command (new StatefulDiffCommand (pl));
2786         }
2787
2788         commit_reversible_command ();
2789 }
2790
2791 void
2792 Editor::region_fill_selection ()
2793 {
2794         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
2795                 return;
2796         }
2797
2798         if (selection->time.empty()) {
2799                 return;
2800         }
2801
2802         boost::shared_ptr<Region> region = _regions->get_single_selection ();
2803         if (region == 0) {
2804                 return;
2805         }
2806
2807         framepos_t start = selection->time[clicked_selection].start;
2808         framepos_t end = selection->time[clicked_selection].end;
2809
2810         boost::shared_ptr<Playlist> playlist;
2811
2812         if (selection->tracks.empty()) {
2813                 return;
2814         }
2815
2816         framepos_t selection_length = end - start;
2817         float times = (float)selection_length / region->length();
2818
2819         begin_reversible_command (Operations::fill_selection);
2820
2821         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2822
2823                 if ((playlist = (*i)->playlist()) == 0) {
2824                         continue;
2825                 }
2826
2827                 playlist->clear_changes ();
2828                 playlist->add_region (RegionFactory::create (region, true), start, times);
2829                 _session->add_command (new StatefulDiffCommand (playlist));
2830         }
2831
2832         commit_reversible_command ();
2833 }
2834
2835 void
2836 Editor::set_region_sync_position ()
2837 {
2838         set_sync_point (get_preferred_edit_position (), get_regions_from_selection_and_edit_point ());
2839 }
2840
2841 void
2842 Editor::set_sync_point (framepos_t where, const RegionSelection& rs)
2843 {
2844         bool in_command = false;
2845
2846         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ++r) {
2847
2848                 if (!(*r)->region()->covers (where)) {
2849                         continue;
2850                 }
2851
2852                 boost::shared_ptr<Region> region ((*r)->region());
2853
2854                 if (!in_command) {
2855                         begin_reversible_command (_("set sync point"));
2856                         in_command = true;
2857                 }
2858
2859                 region->clear_changes ();
2860                 region->set_sync_position (where);
2861                 _session->add_command(new StatefulDiffCommand (region));
2862         }
2863
2864         if (in_command) {
2865                 commit_reversible_command ();
2866         }
2867 }
2868
2869 /** Remove the sync positions of the selection */
2870 void
2871 Editor::remove_region_sync ()
2872 {
2873         RegionSelection rs = get_regions_from_selection_and_entered ();
2874
2875         if (rs.empty()) {
2876                 return;
2877         }
2878
2879         begin_reversible_command (_("remove region sync"));
2880
2881         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2882
2883                 (*i)->region()->clear_changes ();
2884                 (*i)->region()->clear_sync_position ();
2885                 _session->add_command(new StatefulDiffCommand ((*i)->region()));
2886         }
2887
2888         commit_reversible_command ();
2889 }
2890
2891 void
2892 Editor::naturalize_region ()
2893 {
2894         RegionSelection rs = get_regions_from_selection_and_entered ();
2895
2896         if (rs.empty()) {
2897                 return;
2898         }
2899
2900         if (rs.size() > 1) {
2901                 begin_reversible_command (_("move regions to original position"));
2902         } else {
2903                 begin_reversible_command (_("move region to original position"));
2904         }
2905
2906         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2907                 (*i)->region()->clear_changes ();
2908                 (*i)->region()->move_to_natural_position ();
2909                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
2910         }
2911
2912         commit_reversible_command ();
2913 }
2914
2915 void
2916 Editor::align_regions (RegionPoint what)
2917 {
2918         RegionSelection const rs = get_regions_from_selection_and_edit_point ();
2919
2920         if (rs.empty()) {
2921                 return;
2922         }
2923
2924         begin_reversible_command (_("align selection"));
2925
2926         framepos_t const position = get_preferred_edit_position ();
2927
2928         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
2929                 align_region_internal ((*i)->region(), what, position);
2930         }
2931
2932         commit_reversible_command ();
2933 }
2934
2935 struct RegionSortByTime {
2936     bool operator() (const RegionView* a, const RegionView* b) {
2937             return a->region()->position() < b->region()->position();
2938     }
2939 };
2940
2941 void
2942 Editor::align_regions_relative (RegionPoint point)
2943 {
2944         RegionSelection const rs = get_regions_from_selection_and_edit_point ();
2945
2946         if (rs.empty()) {
2947                 return;
2948         }
2949
2950         framepos_t const position = get_preferred_edit_position ();
2951
2952         framepos_t distance = 0;
2953         framepos_t pos = 0;
2954         int dir = 1;
2955
2956         list<RegionView*> sorted;
2957         rs.by_position (sorted);
2958
2959         boost::shared_ptr<Region> r ((*sorted.begin())->region());
2960
2961         switch (point) {
2962         case Start:
2963                 pos = position;
2964                 if (position > r->position()) {
2965                         distance = position - r->position();
2966                 } else {
2967                         distance = r->position() - position;
2968                         dir = -1;
2969                 }
2970                 break;
2971
2972         case End:
2973                 if (position > r->last_frame()) {
2974                         distance = position - r->last_frame();
2975                         pos = r->position() + distance;
2976                 } else {
2977                         distance = r->last_frame() - position;
2978                         pos = r->position() - distance;
2979                         dir = -1;
2980                 }
2981                 break;
2982
2983         case SyncPoint:
2984                 pos = r->adjust_to_sync (position);
2985                 if (pos > r->position()) {
2986                         distance = pos - r->position();
2987                 } else {
2988                         distance = r->position() - pos;
2989                         dir = -1;
2990                 }
2991                 break;
2992         }
2993
2994         if (pos == r->position()) {
2995                 return;
2996         }
2997
2998         begin_reversible_command (_("align selection (relative)"));
2999
3000         /* move first one specially */
3001
3002         r->clear_changes ();
3003         r->set_position (pos);
3004         _session->add_command(new StatefulDiffCommand (r));
3005
3006         /* move rest by the same amount */
3007
3008         sorted.pop_front();
3009
3010         for (list<RegionView*>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
3011
3012                 boost::shared_ptr<Region> region ((*i)->region());
3013
3014                 region->clear_changes ();
3015
3016                 if (dir > 0) {
3017                         region->set_position (region->position() + distance);
3018                 } else {
3019                         region->set_position (region->position() - distance);
3020                 }
3021
3022                 _session->add_command(new StatefulDiffCommand (region));
3023
3024         }
3025
3026         commit_reversible_command ();
3027 }
3028
3029 void
3030 Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
3031 {
3032         begin_reversible_command (_("align region"));
3033         align_region_internal (region, point, position);
3034         commit_reversible_command ();
3035 }
3036
3037 void
3038 Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
3039 {
3040         region->clear_changes ();
3041
3042         switch (point) {
3043         case SyncPoint:
3044                 region->set_position (region->adjust_to_sync (position));
3045                 break;
3046
3047         case End:
3048                 if (position > region->length()) {
3049                         region->set_position (position - region->length());
3050                 }
3051                 break;
3052
3053         case Start:
3054                 region->set_position (position);
3055                 break;
3056         }
3057
3058         _session->add_command(new StatefulDiffCommand (region));
3059 }
3060
3061 void
3062 Editor::trim_region_front ()
3063 {
3064         trim_region (true);
3065 }
3066
3067 void
3068 Editor::trim_region_back ()
3069 {
3070         trim_region (false);
3071 }
3072
3073 void
3074 Editor::trim_region (bool front)
3075 {
3076         framepos_t where = get_preferred_edit_position();
3077         RegionSelection rs = get_regions_from_selection_and_edit_point ();
3078
3079         cerr << "trim regions\n";
3080
3081         if (rs.empty()) {
3082                 cerr << " no regions\n";
3083                 return;
3084         }
3085
3086         cerr << "where = " << where << endl;
3087
3088         begin_reversible_command (front ? _("trim front") : _("trim back"));
3089
3090         for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
3091                 if (!(*i)->region()->locked()) {
3092
3093                         (*i)->region()->clear_changes ();
3094
3095                         if (front) {
3096                                 (*i)->region()->trim_front (where);
3097                         } else {
3098                                 (*i)->region()->trim_end (where);
3099                         }
3100
3101                         _session->add_command (new StatefulDiffCommand ((*i)->region()));
3102                 }
3103         }
3104
3105         commit_reversible_command ();
3106 }
3107
3108 /** Trim the end of the selected regions to the position of the edit cursor */
3109 void
3110 Editor::trim_region_to_loop ()
3111 {
3112         Location* loc = _session->locations()->auto_loop_location();
3113         if (!loc) {
3114                 return;
3115         }
3116         trim_region_to_location (*loc, _("trim to loop"));
3117 }
3118
3119 void
3120 Editor::trim_region_to_punch ()
3121 {
3122         Location* loc = _session->locations()->auto_punch_location();
3123         if (!loc) {
3124                 return;
3125         }
3126         trim_region_to_location (*loc, _("trim to punch"));
3127 }
3128
3129 void
3130 Editor::trim_region_to_location (const Location& loc, const char* str)
3131 {
3132         RegionSelection rs = get_regions_from_selection_and_entered ();
3133
3134         begin_reversible_command (str);
3135
3136         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3137                 RegionView* rv = (*x);
3138
3139                 /* require region to span proposed trim */
3140                 switch (rv->region()->coverage (loc.start(), loc.end())) {
3141                 case OverlapInternal:
3142                         break;
3143                 default:
3144                         continue;
3145                 }
3146
3147                 RouteTimeAxisView* tav = dynamic_cast<RouteTimeAxisView*> (&rv->get_time_axis_view());
3148                 if (!tav) {
3149                         return;
3150                 }
3151
3152                 float speed = 1.0;
3153                 framepos_t start;
3154                 framepos_t end;
3155
3156                 if (tav->track() != 0) {
3157                         speed = tav->track()->speed();
3158                 }
3159
3160                 start = session_frame_to_track_frame (loc.start(), speed);
3161                 end = session_frame_to_track_frame (loc.end(), speed);
3162
3163                 rv->region()->clear_changes ();
3164                 rv->region()->trim_to (start, (end - start));
3165                 _session->add_command(new StatefulDiffCommand (rv->region()));
3166         }
3167
3168         commit_reversible_command ();
3169 }
3170
3171 void
3172 Editor::trim_region_to_previous_region_end ()
3173 {
3174         return trim_to_region(false);
3175 }
3176
3177 void
3178 Editor::trim_region_to_next_region_start ()
3179 {
3180         return trim_to_region(true);
3181 }
3182
3183 void
3184 Editor::trim_to_region(bool forward)
3185 {
3186         RegionSelection rs = get_regions_from_selection_and_entered ();
3187
3188         begin_reversible_command (_("trim to region"));
3189
3190         boost::shared_ptr<Region> next_region;
3191
3192         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3193
3194                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3195
3196                 if (!arv) {
3197                         continue;
3198                 }
3199
3200                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3201
3202                 if (!atav) {
3203                         return;
3204                 }
3205
3206                 float speed = 1.0;
3207
3208                 if (atav->track() != 0) {
3209                         speed = atav->track()->speed();
3210                 }
3211
3212
3213                 boost::shared_ptr<Region> region = arv->region();
3214                 boost::shared_ptr<Playlist> playlist (region->playlist());
3215
3216                 region->clear_changes ();
3217
3218                 if (forward) {
3219
3220                     next_region = playlist->find_next_region (region->first_frame(), Start, 1);
3221
3222                     if (!next_region) {
3223                         continue;
3224                     }
3225
3226                     region->trim_end((framepos_t) ( (next_region->first_frame() - 1) * speed));
3227                     arv->region_changed (PropertyChange (ARDOUR::Properties::length));
3228                 }
3229                 else {
3230
3231                     next_region = playlist->find_next_region (region->first_frame(), Start, 0);
3232
3233                     if(!next_region){
3234                         continue;
3235                     }
3236
3237                     region->trim_front((framepos_t) ((next_region->last_frame() + 1) * speed));
3238
3239                     arv->region_changed (ARDOUR::bounds_change);
3240                 }
3241
3242                 _session->add_command(new StatefulDiffCommand (region));
3243         }
3244
3245         commit_reversible_command ();
3246 }
3247
3248 void
3249 Editor::unfreeze_route ()
3250 {
3251         if (clicked_routeview == 0 || !clicked_routeview->is_track()) {
3252                 return;
3253         }
3254
3255         clicked_routeview->track()->unfreeze ();
3256 }
3257
3258 void*
3259 Editor::_freeze_thread (void* arg)
3260 {
3261         SessionEvent::create_per_thread_pool ("freeze events", 64);
3262
3263         return static_cast<Editor*>(arg)->freeze_thread ();
3264 }
3265
3266 void*
3267 Editor::freeze_thread ()
3268 {
3269         clicked_routeview->audio_track()->freeze_me (*current_interthread_info);
3270         current_interthread_info->done = true;
3271         return 0;
3272 }
3273
3274 void
3275 Editor::freeze_route ()
3276 {
3277         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3278                 return;
3279         }
3280
3281         if (!clicked_routeview->track()->bounceable()) {
3282                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (clicked_routeview);
3283                 if (rtv && !rtv->track()->bounceable()) {
3284                         MessageDialog d (
3285                                 _("This route cannot be frozen because it has more outputs than inputs.  "
3286                                   "You can fix this by increasing the number of inputs.")
3287                                 );
3288                         d.set_title (_("Cannot freeze"));
3289                         d.run ();
3290                         return;
3291                 }
3292         }
3293
3294         InterThreadInfo itt;
3295         current_interthread_info = &itt;
3296
3297         InterthreadProgressWindow ipw (current_interthread_info, _("Freeze"), _("Cancel Freeze"));
3298
3299         pthread_create_and_store (X_("freezer"), &itt.thread, _freeze_thread, this);
3300
3301         set_canvas_cursor (_cursors->wait);
3302
3303         while (!itt.done && !itt.cancel) {
3304                 gtk_main_iteration ();
3305         }
3306
3307         current_interthread_info = 0;
3308         set_canvas_cursor (current_canvas_cursor);
3309 }
3310
3311 void
3312 Editor::bounce_range_selection (bool replace, bool enable_processing)
3313 {
3314         if (selection->time.empty()) {
3315                 return;
3316         }
3317
3318         TrackSelection views = selection->tracks;
3319
3320         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3321                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
3322                 if (rtv && rtv->track() && replace && enable_processing && !rtv->track()->bounceable()) {
3323                         MessageDialog d (
3324                                 _("You can't perform this operation because the processing of the signal "
3325                                   "will cause one or more of the tracks will end up with a region with more channels than this track has inputs.\n\n"
3326                                   "You can do this without processing, which is a different operation.")
3327                                 );
3328                         d.set_title (_("Cannot bounce"));
3329                         d.run ();
3330                         return;
3331                 }
3332         }
3333
3334         framepos_t start = selection->time[clicked_selection].start;
3335         framepos_t end = selection->time[clicked_selection].end;
3336         framepos_t cnt = end - start + 1;
3337
3338         begin_reversible_command (_("bounce range"));
3339
3340         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3341
3342                 RouteTimeAxisView* rtv;
3343
3344                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*i)) == 0) {
3345                         continue;
3346                 }
3347
3348                 boost::shared_ptr<Playlist> playlist;
3349
3350                 if ((playlist = rtv->playlist()) == 0) {
3351                         return;
3352                 }
3353
3354                 InterThreadInfo itt;
3355
3356                 playlist->clear_changes ();
3357                 playlist->clear_owned_changes ();
3358
3359                 boost::shared_ptr<Region> r = rtv->track()->bounce_range (start, start+cnt, itt, enable_processing);
3360
3361                 if (replace) {
3362                         list<AudioRange> ranges;
3363                         ranges.push_back (AudioRange (start, start+cnt, 0));
3364                         playlist->cut (ranges); // discard result
3365                         playlist->add_region (r, start);
3366                 }
3367
3368                 vector<Command*> cmds;
3369                 playlist->rdiff (cmds);
3370                 _session->add_commands (cmds);
3371
3372                 _session->add_command (new StatefulDiffCommand (playlist));
3373         }
3374
3375         commit_reversible_command ();
3376 }
3377
3378 /** Cut selected regions, automation points or a time range */
3379 void
3380 Editor::cut ()
3381 {
3382         cut_copy (Cut);
3383 }
3384
3385 /** Copy selected regions, automation points or a time range */
3386 void
3387 Editor::copy ()
3388 {
3389         cut_copy (Copy);
3390 }
3391
3392
3393 /** @return true if a Cut, Copy or Clear is possible */
3394 bool
3395 Editor::can_cut_copy () const
3396 {
3397         switch (current_mouse_mode()) {
3398
3399         case MouseObject:
3400                 if (!selection->regions.empty() || !selection->points.empty()) {
3401                         return true;
3402                 }
3403                 break;
3404
3405         case MouseRange:
3406                 if (!selection->time.empty()) {
3407                         return true;
3408                 }
3409                 break;
3410
3411         default:
3412                 break;
3413         }
3414
3415         return false;
3416 }
3417
3418
3419 /** Cut, copy or clear selected regions, automation points or a time range.
3420  * @param op Operation (Cut, Copy or Clear)
3421  */
3422 void
3423 Editor::cut_copy (CutCopyOp op)
3424 {
3425         /* only cancel selection if cut/copy is successful.*/
3426
3427         string opname;
3428
3429         switch (op) {
3430         case Cut:
3431                 opname = _("cut");
3432                 break;
3433         case Copy:
3434                 opname = _("copy");
3435                 break;
3436         case Clear:
3437                 opname = _("clear");
3438                 break;
3439         }
3440
3441         /* if we're deleting something, and the mouse is still pressed,
3442            the thing we started a drag for will be gone when we release
3443            the mouse button(s). avoid this. see part 2 at the end of
3444            this function.
3445         */
3446
3447         if (op == Cut || op == Clear) {
3448                 if (_drags->active ()) {
3449                         _drags->abort ();
3450                 }
3451         }
3452
3453         cut_buffer->clear ();
3454
3455         if (entered_marker) {
3456
3457                 /* cut/delete op while pointing at a marker */
3458
3459                 bool ignored;
3460                 Location* loc = find_location_from_marker (entered_marker, ignored);
3461
3462                 if (_session && loc) {
3463                         Glib::signal_idle().connect (sigc::bind (sigc::mem_fun(*this, &Editor::really_remove_marker), loc));
3464                 }
3465
3466                 _drags->abort ();
3467                 return;
3468         }
3469
3470         if (internal_editing()) {
3471
3472                 switch (current_mouse_mode()) {
3473                 case MouseObject:
3474                 case MouseRange:
3475                         cut_copy_midi (op);
3476                         break;
3477                 default:
3478                         break;
3479                 }
3480
3481         } else {
3482
3483                 RegionSelection rs;
3484
3485                 /* we only want to cut regions if some are selected */
3486
3487                 if (!selection->regions.empty()) {
3488                         rs = selection->regions;
3489                 }
3490
3491                 switch (current_mouse_mode()) {
3492                 case MouseObject:
3493                         if (!rs.empty() || !selection->points.empty()) {
3494
3495                                 begin_reversible_command (opname + _(" objects"));
3496
3497                                 if (!rs.empty()) {
3498                                         cut_copy_regions (op, rs);
3499
3500                                         if (op == Cut) {
3501                                                 selection->clear_regions ();
3502                                         }
3503                                 }
3504
3505                                 if (!selection->points.empty()) {
3506                                         cut_copy_points (op);
3507
3508                                         if (op == Cut) {
3509                                                 selection->clear_points ();
3510                                         }
3511                                 }
3512
3513                                 commit_reversible_command ();
3514                                 break; // terminate case statement here
3515                         }
3516                         if (!selection->time.empty()) {
3517                                 /* don't cause suprises */
3518                                 break;
3519                         }
3520                         // fall thru if there was nothing selected
3521
3522                 case MouseRange:
3523                         if (selection->time.empty()) {
3524                                 framepos_t start, end;
3525                                 if (!get_edit_op_range (start, end)) {
3526                                         return;
3527                                 }
3528                                 selection->set (start, end);
3529                         }
3530
3531                         begin_reversible_command (opname + _(" range"));
3532                         cut_copy_ranges (op);
3533                         commit_reversible_command ();
3534
3535                         if (op == Cut) {
3536                                 selection->clear_time ();
3537                         }
3538
3539                         break;
3540
3541                 default:
3542                         break;
3543                 }
3544         }
3545
3546         if (op == Cut || op == Clear) {
3547                 _drags->abort ();
3548         }
3549 }
3550
3551 /** Cut, copy or clear selected automation points.
3552  * @param op Operation (Cut, Copy or Clear)
3553  */
3554 void
3555 Editor::cut_copy_points (CutCopyOp op)
3556 {
3557         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
3558
3559                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>((*i).track);
3560                 _last_cut_copy_source_track = atv;
3561
3562                 if (atv) {
3563                         atv->cut_copy_clear_objects (selection->points, op);
3564                 }
3565         }
3566 }
3567
3568 /** Cut, copy or clear selected automation points.
3569  * @param op Operation (Cut, Copy or Clear)
3570  */
3571 void
3572 Editor::cut_copy_midi (CutCopyOp op)
3573 {
3574         for (MidiRegionSelection::iterator i = selection->midi_regions.begin(); i != selection->midi_regions.end(); ++i) {
3575                 MidiRegionView* mrv = *i;
3576                 mrv->cut_copy_clear (op);
3577         }
3578 }
3579
3580
3581
3582 struct lt_playlist {
3583     bool operator () (const PlaylistState& a, const PlaylistState& b) {
3584             return a.playlist < b.playlist;
3585     }
3586 };
3587
3588 struct PlaylistMapping {
3589     TimeAxisView* tv;
3590     boost::shared_ptr<Playlist> pl;
3591
3592     PlaylistMapping (TimeAxisView* tvp) : tv (tvp) {}
3593 };
3594
3595 /** Remove `clicked_regionview' */
3596 void
3597 Editor::remove_clicked_region ()
3598 {
3599         if (clicked_routeview == 0 || clicked_regionview == 0) {
3600                 return;
3601         }
3602
3603         boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
3604
3605         begin_reversible_command (_("remove region"));
3606         playlist->clear_changes ();
3607         playlist->remove_region (clicked_regionview->region());
3608         _session->add_command(new StatefulDiffCommand (playlist));
3609         commit_reversible_command ();
3610 }
3611
3612
3613 /** Remove the selected regions */
3614 void
3615 Editor::remove_selected_regions ()
3616 {
3617         RegionSelection rs = get_regions_from_selection_and_entered ();
3618
3619         if (!_session || rs.empty()) {
3620                 return;
3621         }
3622
3623         begin_reversible_command (_("remove region"));
3624
3625         list<boost::shared_ptr<Region> > regions_to_remove;
3626
3627         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3628                 // we can't just remove the region(s) in this loop because
3629                 // this removes them from the RegionSelection, and they thus
3630                 // disappear from underneath the iterator, and the ++i above
3631                 // SEGVs in a puzzling fashion.
3632
3633                 // so, first iterate over the regions to be removed from rs and
3634                 // add them to the regions_to_remove list, and then
3635                 // iterate over the list to actually remove them.
3636
3637                 regions_to_remove.push_back ((*i)->region());
3638         }
3639
3640         vector<boost::shared_ptr<Playlist> > playlists;
3641
3642         for (list<boost::shared_ptr<Region> >::iterator rl = regions_to_remove.begin(); rl != regions_to_remove.end(); ++rl) {
3643
3644                 boost::shared_ptr<Playlist> playlist = (*rl)->playlist();
3645
3646                 if (!playlist) {
3647                         // is this check necessary?
3648                         continue;
3649                 }
3650
3651                 vector<boost::shared_ptr<Playlist> >::iterator i;
3652
3653                 //only prep history if this is a new playlist.
3654                 for (i = playlists.begin(); i != playlists.end(); ++i) {
3655                         if ((*i) == playlist) {
3656                                 break;
3657                         }
3658                 }
3659
3660                 if (i == playlists.end()) {
3661
3662                         playlist->clear_changes ();
3663                         playlist->freeze ();
3664
3665                         playlists.push_back (playlist);
3666                 }
3667
3668                 playlist->remove_region (*rl);
3669         }
3670
3671         vector<boost::shared_ptr<Playlist> >::iterator pl;
3672
3673         for (pl = playlists.begin(); pl != playlists.end(); ++pl) {
3674                 (*pl)->thaw ();
3675                 _session->add_command(new StatefulDiffCommand (*pl));
3676         }
3677
3678         commit_reversible_command ();
3679 }
3680
3681 /** Cut, copy or clear selected regions.
3682  * @param op Operation (Cut, Copy or Clear)
3683  */
3684 void
3685 Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
3686 {
3687         /* we can't use a std::map here because the ordering is important, and we can't trivially sort
3688            a map when we want ordered access to both elements. i think.
3689         */
3690
3691         vector<PlaylistMapping> pmap;
3692
3693         framepos_t first_position = max_framepos;
3694
3695         typedef set<boost::shared_ptr<Playlist> > FreezeList;
3696         FreezeList freezelist;
3697
3698         /* get ordering correct before we cut/copy */
3699
3700         rs.sort_by_position_and_track ();
3701
3702         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3703
3704                 first_position = min ((framepos_t) (*x)->region()->position(), first_position);
3705
3706                 if (op == Cut || op == Clear) {
3707                         boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3708
3709                         if (pl) {
3710                                 FreezeList::iterator fl;
3711
3712                                 //only take state if this is a new playlist.
3713                                 for (fl = freezelist.begin(); fl != freezelist.end(); ++fl) {
3714                                         if ((*fl) == pl) {
3715                                                 break;
3716                                         }
3717                                 }
3718
3719                                 if (fl == freezelist.end()) {
3720                                         pl->clear_changes();
3721                                         pl->freeze ();
3722                                         freezelist.insert (pl);
3723                                 }
3724                         }
3725                 }
3726
3727                 TimeAxisView* tv = &(*x)->get_time_axis_view();
3728                 vector<PlaylistMapping>::iterator z;
3729
3730                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3731                         if ((*z).tv == tv) {
3732                                 break;
3733                         }
3734                 }
3735
3736                 if (z == pmap.end()) {
3737                         pmap.push_back (PlaylistMapping (tv));
3738                 }
3739         }
3740
3741         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ) {
3742
3743                 boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3744
3745                 if (!pl) {
3746                         /* region not yet associated with a playlist (e.g. unfinished
3747                            capture pass.
3748                         */
3749                         ++x;
3750                         continue;
3751                 }
3752
3753                 TimeAxisView& tv = (*x)->get_time_axis_view();
3754                 boost::shared_ptr<Playlist> npl;
3755                 RegionSelection::iterator tmp;
3756
3757                 tmp = x;
3758                 ++tmp;
3759
3760                 vector<PlaylistMapping>::iterator z;
3761
3762                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3763                         if ((*z).tv == &tv) {
3764                                 break;
3765                         }
3766                 }
3767
3768                 assert (z != pmap.end());
3769
3770                 if (!(*z).pl) {
3771                         npl = PlaylistFactory::create (pl->data_type(), *_session, "cutlist", true);
3772                         npl->freeze();
3773                         (*z).pl = npl;
3774                 } else {
3775                         npl = (*z).pl;
3776                 }
3777
3778                 boost::shared_ptr<Region> r = (*x)->region();
3779                 boost::shared_ptr<Region> _xx;
3780
3781                 assert (r != 0);
3782
3783                 switch (op) {
3784                 case Cut:
3785                         _xx = RegionFactory::create (r);
3786                         npl->add_region (_xx, r->position() - first_position);
3787                         pl->remove_region (r);
3788                         break;
3789
3790                 case Copy:
3791                         /* copy region before adding, so we're not putting same object into two different playlists */
3792                         npl->add_region (RegionFactory::create (r), r->position() - first_position);
3793                         break;
3794
3795                 case Clear:
3796                         pl->remove_region (r);
3797                         break;
3798                 }
3799
3800                 x = tmp;
3801         }
3802
3803         list<boost::shared_ptr<Playlist> > foo;
3804
3805         /* the pmap is in the same order as the tracks in which selected regions occured */
3806
3807         for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
3808                 if ((*i).pl) {
3809                         (*i).pl->thaw();
3810                         foo.push_back ((*i).pl);
3811                 }
3812         }
3813
3814         if (!foo.empty()) {
3815                 cut_buffer->set (foo);
3816         }
3817
3818         if (pmap.empty()) {
3819                 _last_cut_copy_source_track = 0;
3820         } else {
3821                 _last_cut_copy_source_track = pmap.front().tv;
3822         }
3823
3824         for (FreezeList::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
3825                 (*pl)->thaw ();
3826                 _session->add_command (new StatefulDiffCommand (*pl));
3827         }
3828 }
3829
3830 void
3831 Editor::cut_copy_ranges (CutCopyOp op)
3832 {
3833         TrackViewList* ts;
3834         TrackViewList entered;
3835
3836         /* Sort the track selection now, so that it if is used, the playlists
3837            selected by the calls below to cut_copy_clear are in the order that
3838            their tracks appear in the editor.  This makes things like paste
3839            of ranges work properly.
3840         */
3841         sort_track_selection (&selection->tracks);
3842
3843         if (selection->tracks.empty()) {
3844                 if (!entered_track) {
3845                         return;
3846                 }
3847                 entered.push_back (entered_track);
3848                 ts = &entered;
3849         } else {
3850                 ts = &selection->tracks;
3851         }
3852
3853         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
3854                 (*i)->cut_copy_clear (*selection, op);
3855         }
3856 }
3857
3858 void
3859 Editor::paste (float times)
3860 {
3861         DEBUG_TRACE (DEBUG::CutNPaste, "paste to preferred edit pos\n");
3862         paste_internal (get_preferred_edit_position(), times);
3863 }
3864
3865 void
3866 Editor::mouse_paste ()
3867 {
3868         framepos_t where;
3869         bool ignored;
3870
3871         if (!mouse_frame (where, ignored)) {
3872                 return;
3873         }
3874
3875         snap_to (where);
3876         paste_internal (where, 1);
3877 }
3878
3879 void
3880 Editor::paste_internal (framepos_t position, float times)
3881 {
3882         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("apparent paste position is %1\n", position));
3883
3884         if (internal_editing()) {
3885                 if (cut_buffer->midi_notes.empty()) {
3886                         return;
3887                 }
3888         } else {
3889                 if (cut_buffer->empty()) {
3890                         return;
3891                 }
3892         }
3893
3894         if (position == max_framepos) {
3895                 position = get_preferred_edit_position();
3896                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("preferred edit position is %1\n", position));
3897         }
3898
3899         TrackViewList ts;
3900         TrackViewList::iterator i;
3901         size_t nth;
3902
3903         /* get everything in the correct order */
3904
3905         if (!selection->tracks.empty()) {
3906                 /* there are some selected tracks, so paste to them */
3907                 sort_track_selection ();
3908                 ts = selection->tracks;
3909         } else if (_last_cut_copy_source_track) {
3910                 /* otherwise paste to the track that the cut/copy came from;
3911                    see discussion in mantis #3333.
3912                 */
3913                 ts.push_back (_last_cut_copy_source_track);
3914         }
3915
3916         if (internal_editing ()) {
3917
3918                 /* undo/redo is handled by individual tracks/regions */
3919
3920                 for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
3921
3922                         RegionSelection rs;
3923                         RegionSelection::iterator r;
3924                         MidiNoteSelection::iterator cb;
3925
3926                         get_regions_at (rs, position, ts);
3927
3928                         for (cb = cut_buffer->midi_notes.begin(), r = rs.begin();
3929                              cb != cut_buffer->midi_notes.end() && r != rs.end(); ++r) {
3930                                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*r);
3931                                 if (mrv) {
3932                                         mrv->paste (position, times, **cb);
3933                                         ++cb;
3934                                 }
3935                         }
3936                 }
3937
3938         } else {
3939
3940                 /* we do redo (do you do voodoo?) */
3941
3942                 begin_reversible_command (Operations::paste);
3943
3944                 for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
3945                         (*i)->paste (position, times, *cut_buffer, nth);
3946                 }
3947
3948                 commit_reversible_command ();
3949         }
3950 }
3951
3952 void
3953 Editor::duplicate_some_regions (RegionSelection& regions, float times)
3954 {
3955         boost::shared_ptr<Playlist> playlist;
3956         RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
3957         RegionSelection foo;
3958
3959         framepos_t const start_frame = regions.start ();
3960         framepos_t const end_frame = regions.end_frame ();
3961
3962         begin_reversible_command (Operations::duplicate_region);
3963
3964         selection->clear_regions ();
3965
3966         for (RegionSelection::iterator i = sel.begin(); i != sel.end(); ++i) {
3967
3968                 boost::shared_ptr<Region> r ((*i)->region());
3969
3970                 TimeAxisView& tv = (*i)->get_time_axis_view();
3971                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
3972                 latest_regionviews.clear ();
3973                 sigc::connection c = rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view));
3974
3975                 playlist = (*i)->region()->playlist();
3976                 playlist->clear_changes ();
3977                 playlist->duplicate (r, end_frame + (r->first_frame() - start_frame), times);
3978                 _session->add_command(new StatefulDiffCommand (playlist));
3979
3980                 c.disconnect ();
3981
3982                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
3983         }
3984
3985         commit_reversible_command ();
3986
3987         if (!foo.empty()) {
3988                 selection->set (foo);
3989         }
3990 }
3991
3992 void
3993 Editor::duplicate_selection (float times)
3994 {
3995         if (selection->time.empty() || selection->tracks.empty()) {
3996                 return;
3997         }
3998
3999         boost::shared_ptr<Playlist> playlist;
4000         vector<boost::shared_ptr<Region> > new_regions;
4001         vector<boost::shared_ptr<Region> >::iterator ri;
4002
4003         create_region_from_selection (new_regions);
4004
4005         if (new_regions.empty()) {
4006                 return;
4007         }
4008
4009         begin_reversible_command (_("duplicate selection"));
4010
4011         ri = new_regions.begin();
4012
4013         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4014                 if ((playlist = (*i)->playlist()) == 0) {
4015                         continue;
4016                 }
4017                 playlist->clear_changes ();
4018                 playlist->duplicate (*ri, selection->time[clicked_selection].end, times);
4019                 _session->add_command (new StatefulDiffCommand (playlist));
4020
4021                 ++ri;
4022                 if (ri == new_regions.end()) {
4023                         --ri;
4024                 }
4025         }
4026
4027         commit_reversible_command ();
4028 }
4029
4030 void
4031 Editor::reset_point_selection ()
4032 {
4033         /* reset all selected points to the relevant default value */
4034
4035         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
4036
4037                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>((*i).track);
4038
4039                 if (atv) {
4040                         atv->reset_objects (selection->points);
4041                 }
4042         }
4043 }
4044
4045 void
4046 Editor::center_playhead ()
4047 {
4048         float page = _canvas_width * frames_per_unit;
4049         center_screen_internal (playhead_cursor->current_frame, page);
4050 }
4051
4052 void
4053 Editor::center_edit_point ()
4054 {
4055         float page = _canvas_width * frames_per_unit;
4056         center_screen_internal (get_preferred_edit_position(), page);
4057 }
4058
4059 /** Caller must begin and commit a reversible command */
4060 void
4061 Editor::clear_playlist (boost::shared_ptr<Playlist> playlist)
4062 {
4063         playlist->clear_changes ();
4064         playlist->clear ();
4065         _session->add_command (new StatefulDiffCommand (playlist));
4066 }
4067
4068 void
4069 Editor::nudge_track (bool use_edit, bool forwards)
4070 {
4071         boost::shared_ptr<Playlist> playlist;
4072         framepos_t distance;
4073         framepos_t next_distance;
4074         framepos_t start;
4075
4076         if (use_edit) {
4077                 start = get_preferred_edit_position();
4078         } else {
4079                 start = 0;
4080         }
4081
4082         if ((distance = get_nudge_distance (start, next_distance)) == 0) {
4083                 return;
4084         }
4085
4086         if (selection->tracks.empty()) {
4087                 return;
4088         }
4089
4090         begin_reversible_command (_("nudge track"));
4091
4092         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4093
4094                 if ((playlist = (*i)->playlist()) == 0) {
4095                         continue;
4096                 }
4097
4098                 playlist->clear_changes ();
4099                 playlist->clear_owned_changes ();
4100
4101                 playlist->nudge_after (start, distance, forwards);
4102
4103                 vector<Command*> cmds;
4104
4105                 playlist->rdiff (cmds);
4106                 _session->add_commands (cmds);
4107
4108                 _session->add_command (new StatefulDiffCommand (playlist));
4109         }
4110
4111         commit_reversible_command ();
4112 }
4113
4114 void
4115 Editor::remove_last_capture ()
4116 {
4117         vector<string> choices;
4118         string prompt;
4119
4120         if (!_session) {
4121                 return;
4122         }
4123
4124         if (Config->get_verify_remove_last_capture()) {
4125                 prompt  = _("Do you really want to destroy the last capture?"
4126                             "\n(This is destructive and cannot be undone)");
4127
4128                 choices.push_back (_("No, do nothing."));
4129                 choices.push_back (_("Yes, destroy it."));
4130
4131                 Gtkmm2ext::Choice prompter (_("Destroy last capture"), prompt, choices);
4132
4133                 if (prompter.run () == 1) {
4134                         _session->remove_last_capture ();
4135                         _regions->redisplay ();
4136                 }
4137
4138         } else {
4139                 _session->remove_last_capture();
4140                 _regions->redisplay ();
4141         }
4142 }
4143
4144 void
4145 Editor::normalize_region ()
4146 {
4147         if (!_session) {
4148                 return;
4149         }
4150
4151         RegionSelection rs = get_regions_from_selection_and_entered ();
4152
4153         if (rs.empty()) {
4154                 return;
4155         }
4156
4157         NormalizeDialog dialog (rs.size() > 1);
4158
4159         if (dialog.run () == RESPONSE_CANCEL) {
4160                 return;
4161         }
4162
4163         set_canvas_cursor (_cursors->wait);
4164         gdk_flush ();
4165
4166         /* XXX: should really only count audio regions here */
4167         int const regions = rs.size ();
4168
4169         /* Make a list of the selected audio regions' maximum amplitudes, and also
4170            obtain the maximum amplitude of them all.
4171         */
4172         list<double> max_amps;
4173         double max_amp = 0;
4174         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
4175                 AudioRegionView const * arv = dynamic_cast<AudioRegionView const *> (*i);
4176                 if (arv) {
4177                         dialog.descend (1.0 / regions);
4178                         double const a = arv->audio_region()->maximum_amplitude (&dialog);
4179
4180                         if (a == -1) {
4181                                 /* the user cancelled the operation */
4182                                 set_canvas_cursor (current_canvas_cursor);
4183                                 return;
4184                         }
4185
4186                         max_amps.push_back (a);
4187                         max_amp = max (max_amp, a);
4188                         dialog.ascend ();
4189                 }
4190         }
4191
4192         begin_reversible_command (_("normalize"));
4193
4194         list<double>::const_iterator a = max_amps.begin ();
4195
4196         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4197                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (*r);
4198                 if (!arv) {
4199                         continue;
4200                 }
4201
4202                 arv->region()->clear_changes ();
4203
4204                 double const amp = dialog.normalize_individually() ? *a : max_amp;
4205
4206                 arv->audio_region()->normalize (amp, dialog.target ());
4207                 _session->add_command (new StatefulDiffCommand (arv->region()));
4208
4209                 ++a;
4210         }
4211
4212         commit_reversible_command ();
4213         set_canvas_cursor (current_canvas_cursor);
4214 }
4215
4216
4217 void
4218 Editor::reset_region_scale_amplitude ()
4219 {
4220         if (!_session) {
4221                 return;
4222         }
4223
4224         RegionSelection rs = get_regions_from_selection_and_entered ();
4225
4226         if (rs.empty()) {
4227                 return;
4228         }
4229
4230         begin_reversible_command ("reset gain");
4231
4232         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4233                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4234                 if (!arv)
4235                         continue;
4236                 arv->region()->clear_changes ();
4237                 arv->audio_region()->set_scale_amplitude (1.0f);
4238                 _session->add_command (new StatefulDiffCommand (arv->region()));
4239         }
4240
4241         commit_reversible_command ();
4242 }
4243
4244 void
4245 Editor::adjust_region_gain (bool up)
4246 {
4247         RegionSelection rs = get_regions_from_selection_and_entered ();
4248
4249         if (!_session || rs.empty()) {
4250                 return;
4251         }
4252
4253         begin_reversible_command ("adjust region gain");
4254
4255         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4256                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4257                 if (!arv) {
4258                         continue;
4259                 }
4260
4261                 arv->region()->clear_changes ();
4262
4263                 double dB = accurate_coefficient_to_dB (arv->audio_region()->scale_amplitude ());
4264
4265                 if (up) {
4266                         dB += 1;
4267                 } else {
4268                         dB -= 1;
4269                 }
4270
4271                 arv->audio_region()->set_scale_amplitude (dB_to_coefficient (dB));
4272                 _session->add_command (new StatefulDiffCommand (arv->region()));
4273         }
4274
4275         commit_reversible_command ();
4276 }
4277
4278
4279 void
4280 Editor::reverse_region ()
4281 {
4282         if (!_session) {
4283                 return;
4284         }
4285
4286         Reverse rev (*_session);
4287         apply_filter (rev, _("reverse regions"));
4288 }
4289
4290 void
4291 Editor::strip_region_silence ()
4292 {
4293         if (!_session) {
4294                 return;
4295         }
4296
4297         RegionSelection rs = get_regions_from_selection_and_entered ();
4298
4299         if (rs.empty()) {
4300                 return;
4301         }
4302
4303         std::list<RegionView*> audio_only;
4304
4305         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4306                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (*i);
4307                 if (arv) {
4308                         audio_only.push_back (arv);
4309                 }
4310         }
4311
4312         StripSilenceDialog d (_session, audio_only);
4313         int const r = d.run ();
4314
4315         d.drop_rects ();
4316
4317         if (r == Gtk::RESPONSE_OK) {
4318                 ARDOUR::AudioIntervalMap silences;
4319                 d.silences (silences);
4320                 StripSilence s (*_session, silences, d.fade_length());
4321                 apply_filter (s, _("strip silence"), &d);
4322         }
4323 }
4324
4325 Command*
4326 Editor::apply_midi_note_edit_op_to_region (MidiOperator& op, MidiRegionView& mrv)
4327 {
4328         Evoral::Sequence<Evoral::MusicalTime>::Notes selected;
4329         mrv.selection_as_notelist (selected, true);
4330
4331         vector<Evoral::Sequence<Evoral::MusicalTime>::Notes> v;
4332         v.push_back (selected);
4333
4334         framepos_t pos_frames = mrv.midi_region()->position();
4335         double     pos_beats  = _session->tempo_map().framewalk_to_beats(0, pos_frames);
4336
4337         return op (mrv.midi_region()->model(), pos_beats, v);
4338 }
4339
4340 void
4341 Editor::apply_midi_note_edit_op (MidiOperator& op)
4342 {
4343         Command* cmd;
4344
4345         RegionSelection rs = get_regions_from_selection_and_entered ();
4346
4347         if (rs.empty()) {
4348                 return;
4349         }
4350
4351         begin_reversible_command (op.name ());
4352
4353         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4354                 RegionSelection::iterator tmp = r;
4355                 ++tmp;
4356
4357                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*r);
4358
4359                 if (mrv) {
4360                         cmd = apply_midi_note_edit_op_to_region (op, *mrv);
4361                         if (cmd) {
4362                                 (*cmd)();
4363                                 _session->add_command (cmd);
4364                         }
4365                 }
4366
4367                 r = tmp;
4368         }
4369
4370         commit_reversible_command ();
4371 }
4372
4373 void
4374 Editor::fork_region ()
4375 {
4376         RegionSelection rs = get_regions_from_selection_and_entered ();
4377
4378         if (rs.empty()) {
4379                 return;
4380         }
4381
4382         begin_reversible_command (_("Fork Region(s)"));
4383
4384         set_canvas_cursor (_cursors->wait);
4385         gdk_flush ();
4386
4387         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4388                 RegionSelection::iterator tmp = r;
4389                 ++tmp;
4390
4391                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
4392
4393                 if (mrv) {
4394                         boost::shared_ptr<Playlist> playlist = mrv->region()->playlist();
4395                         boost::shared_ptr<MidiRegion> newregion = mrv->midi_region()->clone ();
4396
4397                         playlist->clear_changes ();
4398                         playlist->replace_region (mrv->region(), newregion, mrv->region()->position());
4399                         _session->add_command(new StatefulDiffCommand (playlist));
4400                 }
4401
4402                 r = tmp;
4403         }
4404
4405         commit_reversible_command ();
4406
4407         set_canvas_cursor (current_canvas_cursor);
4408 }
4409
4410 void
4411 Editor::quantize_region ()
4412 {
4413         int selected_midi_region_cnt = 0;
4414
4415         if (!_session) {
4416                 return;
4417         }
4418
4419         RegionSelection rs = get_regions_from_selection_and_entered ();
4420
4421         if (rs.empty()) {
4422                 return;
4423         }
4424
4425         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4426                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*r);
4427                 if (mrv) {
4428                         selected_midi_region_cnt++;
4429                 }
4430         }
4431
4432         if (selected_midi_region_cnt == 0) {
4433                 return;
4434         }
4435
4436         QuantizeDialog* qd = new QuantizeDialog (*this);
4437
4438         qd->present ();
4439         const int r = qd->run ();
4440         qd->hide ();
4441
4442         if (r == Gtk::RESPONSE_OK) {
4443                 Quantize quant (*_session, Plain,
4444                                 qd->snap_start(), qd->snap_end(),
4445                                 qd->start_grid_size(), qd->end_grid_size(),
4446                                 qd->strength(), qd->swing(), qd->threshold());
4447
4448                 apply_midi_note_edit_op (quant);
4449         }
4450 }
4451
4452 void
4453 Editor::insert_patch_change ()
4454 {
4455         RegionSelection rs = get_regions_from_selection_and_entered ();
4456         if (rs.empty ()) {
4457                 return;
4458         }
4459
4460         framepos_t const p = get_preferred_edit_position (false);
4461
4462         Evoral::PatchChange<Evoral::MusicalTime> empty (0, 0, 0, 0);
4463         PatchChangeDialog d (0, _session, empty, Gtk::Stock::ADD);
4464
4465         if (d.run() == RESPONSE_CANCEL) {
4466                 return;
4467         }
4468
4469         for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
4470                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*i);
4471                 if (mrv) {
4472                         if (p >= mrv->region()->first_frame() && p <= mrv->region()->last_frame()) {
4473                                 mrv->add_patch_change (p - mrv->region()->position(), d.patch ());
4474                         }
4475                 }
4476         }
4477 }
4478
4479 void
4480 Editor::apply_filter (Filter& filter, string command, ProgressReporter* progress)
4481 {
4482         RegionSelection rs = get_regions_from_selection_and_entered ();
4483
4484         if (rs.empty()) {
4485                 return;
4486         }
4487
4488         begin_reversible_command (command);
4489
4490         set_canvas_cursor (_cursors->wait);
4491         gdk_flush ();
4492
4493         int n = 0;
4494         int const N = rs.size ();
4495
4496         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4497                 RegionSelection::iterator tmp = r;
4498                 ++tmp;
4499
4500                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4501                 if (arv) {
4502                         boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
4503
4504                         if (progress) {
4505                                 progress->descend (1.0 / N);
4506                         }
4507
4508                         if (arv->audio_region()->apply (filter, progress) == 0) {
4509
4510                                 playlist->clear_changes ();
4511
4512                                 if (filter.results.empty ()) {
4513
4514                                         /* no regions returned; remove the old one */
4515                                         playlist->remove_region (arv->region ());
4516
4517                                 } else {
4518
4519                                         std::vector<boost::shared_ptr<Region> >::iterator res = filter.results.begin ();
4520
4521                                         /* first region replaces the old one */
4522                                         playlist->replace_region (arv->region(), *res, (*res)->position());
4523                                         ++res;
4524
4525                                         /* add the rest */
4526                                         while (res != filter.results.end()) {
4527                                                 playlist->add_region (*res, (*res)->position());
4528                                                 ++res;
4529                                         }
4530
4531                                 }
4532
4533                                 _session->add_command(new StatefulDiffCommand (playlist));
4534                         } else {
4535                                 goto out;
4536                         }
4537
4538                         if (progress) {
4539                                 progress->ascend ();
4540                         }
4541                 }
4542
4543                 r = tmp;
4544                 ++n;
4545         }
4546
4547         commit_reversible_command ();
4548
4549   out:
4550         set_canvas_cursor (current_canvas_cursor);
4551 }
4552
4553 void
4554 Editor::external_edit_region ()
4555 {
4556         /* more to come */
4557 }
4558
4559 void
4560 Editor::reset_region_gain_envelopes ()
4561 {
4562         RegionSelection rs = get_regions_from_selection_and_entered ();
4563
4564         if (!_session || rs.empty()) {
4565                 return;
4566         }
4567
4568         _session->begin_reversible_command (_("reset region gain"));
4569
4570         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4571                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4572                 if (arv) {
4573                         boost::shared_ptr<AutomationList> alist (arv->audio_region()->envelope());
4574                         XMLNode& before (alist->get_state());
4575
4576                         arv->audio_region()->set_default_envelope ();
4577                         _session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
4578                 }
4579         }
4580
4581         _session->commit_reversible_command ();
4582 }
4583
4584 void
4585 Editor::toggle_gain_envelope_visibility ()
4586 {
4587         if (_ignore_region_action) {
4588                 return;
4589         }
4590
4591         RegionSelection rs = get_regions_from_selection_and_entered ();
4592
4593         if (!_session || rs.empty()) {
4594                 return;
4595         }
4596
4597         _session->begin_reversible_command (_("region gain envelope visible"));
4598
4599         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4600                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4601                 if (arv) {
4602                         arv->region()->clear_changes ();
4603                         arv->set_envelope_visible (!arv->envelope_visible());
4604                         _session->add_command (new StatefulDiffCommand (arv->region()));
4605                 }
4606         }
4607
4608         _session->commit_reversible_command ();
4609 }
4610
4611 void
4612 Editor::toggle_gain_envelope_active ()
4613 {
4614         if (_ignore_region_action) {
4615                 return;
4616         }
4617
4618         RegionSelection rs = get_regions_from_selection_and_entered ();
4619
4620         if (!_session || rs.empty()) {
4621                 return;
4622         }
4623
4624         _session->begin_reversible_command (_("region gain envelope active"));
4625
4626         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4627                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4628                 if (arv) {
4629                         arv->region()->clear_changes ();
4630                         arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
4631                         _session->add_command (new StatefulDiffCommand (arv->region()));
4632                 }
4633         }
4634
4635         _session->commit_reversible_command ();
4636 }
4637
4638 void
4639 Editor::toggle_region_lock ()
4640 {
4641         if (_ignore_region_action) {
4642                 return;
4643         }
4644
4645         RegionSelection rs = get_regions_from_selection_and_entered ();
4646
4647         if (!_session || rs.empty()) {
4648                 return;
4649         }
4650
4651         _session->begin_reversible_command (_("toggle region lock"));
4652
4653         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4654                 (*i)->region()->clear_changes ();
4655                 (*i)->region()->set_locked (!(*i)->region()->locked());
4656                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
4657         }
4658
4659         _session->commit_reversible_command ();
4660 }
4661
4662 void
4663 Editor::toggle_region_lock_style ()
4664 {
4665         if (_ignore_region_action) {
4666                 return;
4667         }
4668
4669         RegionSelection rs = get_regions_from_selection_and_entered ();
4670
4671         if (!_session || rs.empty()) {
4672                 return;
4673         }
4674
4675         _session->begin_reversible_command (_("region lock style"));
4676
4677         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4678                 (*i)->region()->clear_changes ();
4679                 PositionLockStyle const ns = (*i)->region()->position_lock_style() == AudioTime ? MusicTime : AudioTime;
4680                 (*i)->region()->set_position_lock_style (ns);
4681                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
4682         }
4683
4684         _session->commit_reversible_command ();
4685 }
4686
4687 void
4688 Editor::toggle_opaque_region ()
4689 {
4690         if (_ignore_region_action) {
4691                 return;
4692         }
4693
4694         RegionSelection rs = get_regions_from_selection_and_entered ();
4695
4696         if (!_session || rs.empty()) {
4697                 return;
4698         }
4699
4700         _session->begin_reversible_command (_("change region opacity"));
4701
4702         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4703                 (*i)->region()->clear_changes ();
4704                 (*i)->region()->set_opaque (!(*i)->region()->opaque());
4705                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
4706         }
4707
4708         _session->commit_reversible_command ();
4709 }
4710
4711 void
4712 Editor::toggle_record_enable ()
4713 {
4714         bool new_state = false;
4715         bool first = true;
4716         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4717                 RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
4718                 if (!rtav)
4719                         continue;
4720                 if (!rtav->is_track())
4721                         continue;
4722
4723                 if (first) {
4724                         new_state = !rtav->track()->record_enabled();
4725                         first = false;
4726                 }
4727
4728                 rtav->track()->set_record_enabled (new_state, this);
4729         }
4730 }
4731
4732
4733 void
4734 Editor::set_fade_length (bool in)
4735 {
4736         RegionSelection rs = get_regions_from_selection_and_entered ();
4737
4738         if (rs.empty()) {
4739                 return;
4740         }
4741
4742         /* we need a region to measure the offset from the start */
4743
4744         RegionView* rv = rs.front ();
4745
4746         framepos_t pos = get_preferred_edit_position();
4747         framepos_t len;
4748         char const * cmd;
4749
4750         if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
4751                 /* edit point is outside the relevant region */
4752                 return;
4753         }
4754
4755         if (in) {
4756                 if (pos <= rv->region()->position()) {
4757                         /* can't do it */
4758                         return;
4759                 }
4760                 len = pos - rv->region()->position();
4761                 cmd = _("set fade in length");
4762         } else {
4763                 if (pos >= rv->region()->last_frame()) {
4764                         /* can't do it */
4765                         return;
4766                 }
4767                 len = rv->region()->last_frame() - pos;
4768                 cmd = _("set fade out length");
4769         }
4770
4771         begin_reversible_command (cmd);
4772
4773         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4774                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4775
4776                 if (!tmp) {
4777                         return;
4778                 }
4779
4780                 boost::shared_ptr<AutomationList> alist;
4781                 if (in) {
4782                         alist = tmp->audio_region()->fade_in();
4783                 } else {
4784                         alist = tmp->audio_region()->fade_out();
4785                 }
4786
4787                 XMLNode &before = alist->get_state();
4788
4789                 if (in) {
4790                         tmp->audio_region()->set_fade_in_length (len);
4791                         tmp->audio_region()->set_fade_in_active (true);
4792                 } else {
4793                         tmp->audio_region()->set_fade_out_length (len);
4794                         tmp->audio_region()->set_fade_out_active (true);
4795                 }
4796
4797                 XMLNode &after = alist->get_state();
4798                 _session->add_command(new MementoCommand<AutomationList>(*alist, &before, &after));
4799         }
4800
4801         commit_reversible_command ();
4802 }
4803
4804 void
4805 Editor::set_fade_in_shape (FadeShape shape)
4806 {
4807         RegionSelection rs = get_regions_from_selection_and_entered ();
4808
4809         if (rs.empty()) {
4810                 return;
4811         }
4812
4813         begin_reversible_command (_("set fade in shape"));
4814
4815         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4816                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4817
4818                 if (!tmp) {
4819                         return;
4820                 }
4821
4822                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
4823                 XMLNode &before = alist->get_state();
4824
4825                 tmp->audio_region()->set_fade_in_shape (shape);
4826
4827                 XMLNode &after = alist->get_state();
4828                 _session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4829         }
4830
4831         commit_reversible_command ();
4832
4833 }
4834
4835 void
4836 Editor::set_fade_out_shape (FadeShape shape)
4837 {
4838         RegionSelection rs = get_regions_from_selection_and_entered ();
4839
4840         if (rs.empty()) {
4841                 return;
4842         }
4843
4844         begin_reversible_command (_("set fade out shape"));
4845
4846         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4847                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4848
4849                 if (!tmp) {
4850                         return;
4851                 }
4852
4853                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
4854                 XMLNode &before = alist->get_state();
4855
4856                 tmp->audio_region()->set_fade_out_shape (shape);
4857
4858                 XMLNode &after = alist->get_state();
4859                 _session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4860         }
4861
4862         commit_reversible_command ();
4863 }
4864
4865 void
4866 Editor::set_fade_in_active (bool yn)
4867 {
4868         RegionSelection rs = get_regions_from_selection_and_entered ();
4869
4870         if (rs.empty()) {
4871                 return;
4872         }
4873
4874         begin_reversible_command (_("set fade in active"));
4875
4876         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4877                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4878
4879                 if (!tmp) {
4880                         return;
4881                 }
4882
4883
4884                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4885
4886                 ar->clear_changes ();
4887                 ar->set_fade_in_active (yn);
4888                 _session->add_command (new StatefulDiffCommand (ar));
4889         }
4890
4891         commit_reversible_command ();
4892 }
4893
4894 void
4895 Editor::set_fade_out_active (bool yn)
4896 {
4897         RegionSelection rs = get_regions_from_selection_and_entered ();
4898
4899         if (rs.empty()) {
4900                 return;
4901         }
4902
4903         begin_reversible_command (_("set fade out active"));
4904
4905         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4906                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4907
4908                 if (!tmp) {
4909                         return;
4910                 }
4911
4912                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4913
4914                 ar->clear_changes ();
4915                 ar->set_fade_out_active (yn);
4916                 _session->add_command(new StatefulDiffCommand (ar));
4917         }
4918
4919         commit_reversible_command ();
4920 }
4921
4922 void
4923 Editor::toggle_region_fades (int dir)
4924 {
4925         boost::shared_ptr<AudioRegion> ar;
4926         bool yn;
4927
4928         RegionSelection rs = get_regions_from_selection_and_entered ();
4929
4930         if (rs.empty()) {
4931                 return;
4932         }
4933
4934         RegionSelection::iterator i;
4935         for (i = rs.begin(); i != rs.end(); ++i) {
4936                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>((*i)->region())) != 0) {
4937                         if (dir == -1) {
4938                                 yn = ar->fade_out_active ();
4939                         } else {
4940                                 yn = ar->fade_in_active ();
4941                         }
4942                         break;
4943                 }
4944         }
4945
4946         if (i == rs.end()) {
4947                 return;
4948         }
4949
4950         /* XXX should this undo-able? */
4951
4952         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4953                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>((*i)->region())) == 0) {
4954                         continue;
4955                 }
4956                 if (dir == 1 || dir == 0) {
4957                         ar->set_fade_in_active (!yn);
4958                 }
4959
4960                 if (dir == -1 || dir == 0) {
4961                         ar->set_fade_out_active (!yn);
4962                 }
4963         }
4964 }
4965
4966
4967 /** Update region fade visibility after its configuration has been changed */
4968 void
4969 Editor::update_region_fade_visibility ()
4970 {
4971         bool _fade_visibility = _session->config.get_show_region_fades ();
4972
4973         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4974                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
4975                 if (v) {
4976                         if (_fade_visibility) {
4977                                 v->audio_view()->show_all_fades ();
4978                         } else {
4979                                 v->audio_view()->hide_all_fades ();
4980                         }
4981                 }
4982         }
4983 }
4984
4985 /** Update crossfade visibility after its configuration has been changed */
4986 void
4987 Editor::update_xfade_visibility ()
4988 {
4989         _xfade_visibility = _session->config.get_xfades_visible ();
4990
4991         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4992                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
4993                 if (v) {
4994                         if (_xfade_visibility) {
4995                                 v->show_all_xfades ();
4996                         } else {
4997                                 v->hide_all_xfades ();
4998                         }
4999                 }
5000         }
5001 }
5002
5003 void
5004 Editor::set_edit_point ()
5005 {
5006         framepos_t where;
5007         bool ignored;
5008
5009         if (!mouse_frame (where, ignored)) {
5010                 return;
5011         }
5012
5013         snap_to (where);
5014
5015         if (selection->markers.empty()) {
5016
5017                 mouse_add_new_marker (where);
5018
5019         } else {
5020                 bool ignored;
5021
5022                 Location* loc = find_location_from_marker (selection->markers.front(), ignored);
5023
5024                 if (loc) {
5025                         loc->move_to (where);
5026                 }
5027         }
5028 }
5029
5030 void
5031 Editor::set_playhead_cursor ()
5032 {
5033         if (entered_marker) {
5034                 _session->request_locate (entered_marker->position(), _session->transport_rolling());
5035         } else {
5036                 framepos_t where;
5037                 bool ignored;
5038
5039                 if (!mouse_frame (where, ignored)) {
5040                         return;
5041                 }
5042
5043                 snap_to (where);
5044
5045                 if (_session) {
5046                         _session->request_locate (where, _session->transport_rolling());
5047                 }
5048         }
5049 }
5050
5051 void
5052 Editor::split_region ()
5053 {
5054         if (((mouse_mode == MouseRange) ||
5055              (mouse_mode != MouseObject && _join_object_range_state == JOIN_OBJECT_RANGE_RANGE)) &&
5056             !selection->time.empty()) {
5057                 separate_regions_between (selection->time);
5058                 return;
5059         }
5060
5061         RegionSelection rs = get_regions_from_selection_and_edit_point ();
5062
5063         framepos_t where = get_preferred_edit_position ();
5064
5065         if (rs.empty()) {
5066                 return;
5067         }
5068
5069         split_regions_at (where, rs);
5070 }
5071
5072 void
5073 Editor::ensure_entered_track_selected (bool op_really_wants_one_track_if_none_are_selected)
5074 {
5075         if (entered_track && mouse_mode == MouseObject) {
5076                 if (!selection->tracks.empty()) {
5077                         if (!selection->selected (entered_track)) {
5078                                 selection->add (entered_track);
5079                         }
5080                 } else {
5081                         /* there is no selection, but this operation requires/prefers selected objects */
5082
5083                         if (op_really_wants_one_track_if_none_are_selected) {
5084                                 selection->set (entered_track);
5085                         }
5086                 }
5087         }
5088 }
5089
5090 struct EditorOrderRouteSorter {
5091     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
5092             /* use of ">" forces the correct sort order */
5093             return a->order_key ("editor") < b->order_key ("editor");
5094     }
5095 };
5096
5097 void
5098 Editor::select_next_route()
5099 {
5100         if (selection->tracks.empty()) {
5101                 selection->set (track_views.front());
5102                 return;
5103         }
5104
5105         TimeAxisView* current = selection->tracks.front();
5106
5107         RouteUI *rui;
5108         do {
5109                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
5110                         if (*i == current) {
5111                                 ++i;
5112                                 if (i != track_views.end()) {
5113                                         current = (*i);
5114                                 } else {
5115                                         current = (*(track_views.begin()));
5116                                         //selection->set (*(track_views.begin()));
5117                                 }
5118                                 break;
5119                         }
5120                 }
5121                 rui = dynamic_cast<RouteUI *>(current);
5122         } while ( current->hidden() || (rui != NULL && !rui->route()->active()));
5123
5124         selection->set(current);
5125
5126         ensure_track_visible(current);
5127 }
5128
5129 void
5130 Editor::select_prev_route()
5131 {
5132         if (selection->tracks.empty()) {
5133                 selection->set (track_views.front());
5134                 return;
5135         }
5136
5137         TimeAxisView* current = selection->tracks.front();
5138
5139         RouteUI *rui;
5140         do {
5141                 for (TrackViewList::reverse_iterator i = track_views.rbegin(); i != track_views.rend(); ++i) {
5142                         if (*i == current) {
5143                                 ++i;
5144                                 if (i != track_views.rend()) {
5145                                         current = (*i);
5146                                 } else {
5147                                         current = *(track_views.rbegin());
5148                                 }
5149                                 break;
5150                         }
5151                 }
5152                 rui = dynamic_cast<RouteUI *>(current);
5153         } while ( current->hidden() || (rui != NULL && !rui->route()->active()));
5154
5155         selection->set (current);
5156
5157         ensure_track_visible(current);
5158 }
5159
5160 void
5161 Editor::ensure_track_visible(TimeAxisView *track)
5162 {
5163         if (track->hidden())
5164                 return;
5165
5166         double const current_view_min_y = vertical_adjustment.get_value();
5167         double const current_view_max_y = vertical_adjustment.get_value() + vertical_adjustment.get_page_size() - canvas_timebars_vsize;
5168
5169         double const track_min_y = track->y_position ();
5170         double const track_max_y = track->y_position () + track->effective_height ();
5171
5172         if (track_min_y >= current_view_min_y &&
5173             track_max_y <= current_view_max_y) {
5174                 return;
5175         }
5176
5177         double new_value;
5178
5179         if (track_min_y < current_view_min_y) {
5180                 // Track is above the current view
5181                 new_value = track_min_y;
5182         } else {
5183                 // Track is below the current view
5184                 new_value = track->y_position () + track->effective_height() + canvas_timebars_vsize - vertical_adjustment.get_page_size();
5185         }
5186
5187         vertical_adjustment.set_value(new_value);
5188 }
5189
5190 void
5191 Editor::set_loop_from_selection (bool play)
5192 {
5193         if (_session == 0 || selection->time.empty()) {
5194                 return;
5195         }
5196
5197         framepos_t start = selection->time[clicked_selection].start;
5198         framepos_t end = selection->time[clicked_selection].end;
5199
5200         set_loop_range (start, end,  _("set loop range from selection"));
5201
5202         if (play) {
5203                 _session->request_play_loop (true);
5204                 _session->request_locate (start, true);
5205         }
5206 }
5207
5208 void
5209 Editor::set_loop_from_edit_range (bool play)
5210 {
5211         if (_session == 0) {
5212                 return;
5213         }
5214
5215         framepos_t start;
5216         framepos_t end;
5217
5218         if (!get_edit_op_range (start, end)) {
5219                 return;
5220         }
5221
5222         set_loop_range (start, end,  _("set loop range from edit range"));
5223
5224         if (play) {
5225                 _session->request_play_loop (true);
5226                 _session->request_locate (start, true);
5227         }
5228 }
5229
5230 void
5231 Editor::set_loop_from_region (bool play)
5232 {
5233         framepos_t start = max_framepos;
5234         framepos_t end = 0;
5235
5236         RegionSelection rs = get_regions_from_selection_and_entered ();
5237
5238         if (rs.empty()) {
5239                 return;
5240         }
5241
5242         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5243                 if ((*i)->region()->position() < start) {
5244                         start = (*i)->region()->position();
5245                 }
5246                 if ((*i)->region()->last_frame() + 1 > end) {
5247                         end = (*i)->region()->last_frame() + 1;
5248                 }
5249         }
5250
5251         set_loop_range (start, end, _("set loop range from region"));
5252
5253         if (play) {
5254                 _session->request_play_loop (true);
5255                 _session->request_locate (start, true);
5256         }
5257 }
5258
5259 void
5260 Editor::set_punch_from_selection ()
5261 {
5262         if (_session == 0 || selection->time.empty()) {
5263                 return;
5264         }
5265
5266         framepos_t start = selection->time[clicked_selection].start;
5267         framepos_t end = selection->time[clicked_selection].end;
5268
5269         set_punch_range (start, end,  _("set punch range from selection"));
5270 }
5271
5272 void
5273 Editor::set_punch_from_edit_range ()
5274 {
5275         if (_session == 0) {
5276                 return;
5277         }
5278
5279         framepos_t start;
5280         framepos_t end;
5281
5282         if (!get_edit_op_range (start, end)) {
5283                 return;
5284         }
5285
5286         set_punch_range (start, end,  _("set punch range from edit range"));
5287 }
5288
5289 void
5290 Editor::set_punch_from_region ()
5291 {
5292         framepos_t start = max_framepos;
5293         framepos_t end = 0;
5294
5295         RegionSelection rs = get_regions_from_selection_and_entered ();
5296
5297         if (rs.empty()) {
5298                 return;
5299         }
5300
5301         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5302                 if ((*i)->region()->position() < start) {
5303                         start = (*i)->region()->position();
5304                 }
5305                 if ((*i)->region()->last_frame() + 1 > end) {
5306                         end = (*i)->region()->last_frame() + 1;
5307                 }
5308         }
5309
5310         set_punch_range (start, end, _("set punch range from region"));
5311 }
5312
5313 void
5314 Editor::pitch_shift_region ()
5315 {
5316         RegionSelection rs = get_regions_from_selection_and_entered ();
5317
5318         RegionSelection audio_rs;
5319         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5320                 if (dynamic_cast<AudioRegionView*> (*i)) {
5321                         audio_rs.push_back (*i);
5322                 }
5323         }
5324
5325         if (audio_rs.empty()) {
5326                 return;
5327         }
5328
5329         pitch_shift (audio_rs, 1.2);
5330 }
5331
5332 void
5333 Editor::transpose_region ()
5334 {
5335         RegionSelection rs = get_regions_from_selection_and_entered ();
5336
5337         list<MidiRegionView*> midi_region_views;
5338         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5339                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*i);
5340                 if (mrv) {
5341                         midi_region_views.push_back (mrv);
5342                 }
5343         }
5344
5345         TransposeDialog d;
5346         int const r = d.run ();
5347         if (r != RESPONSE_ACCEPT) {
5348                 return;
5349         }
5350
5351         for (list<MidiRegionView*>::iterator i = midi_region_views.begin(); i != midi_region_views.end(); ++i) {
5352                 (*i)->midi_region()->transpose (d.semitones ());
5353         }
5354 }
5355
5356 void
5357 Editor::set_tempo_from_region ()
5358 {
5359         RegionSelection rs = get_regions_from_selection_and_entered ();
5360
5361         if (!_session || rs.empty()) {
5362                 return;
5363         }
5364
5365         RegionView* rv = rs.front();
5366
5367         define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
5368 }
5369
5370 void
5371 Editor::use_range_as_bar ()
5372 {
5373         framepos_t start, end;
5374         if (get_edit_op_range (start, end)) {
5375                 define_one_bar (start, end);
5376         }
5377 }
5378
5379 void
5380 Editor::define_one_bar (framepos_t start, framepos_t end)
5381 {
5382         framepos_t length = end - start;
5383
5384         const Meter& m (_session->tempo_map().meter_at (start));
5385
5386         /* length = 1 bar */
5387
5388         /* now we want frames per beat.
5389            we have frames per bar, and beats per bar, so ...
5390         */
5391
5392         double frames_per_beat = length / m.beats_per_bar();
5393
5394         /* beats per minute = */
5395
5396         double beats_per_minute = (_session->frame_rate() * 60.0) / frames_per_beat;
5397
5398         /* now decide whether to:
5399
5400             (a) set global tempo
5401             (b) add a new tempo marker
5402
5403         */
5404
5405         const TempoSection& t (_session->tempo_map().tempo_section_at (start));
5406
5407         bool do_global = false;
5408
5409         if ((_session->tempo_map().n_tempos() == 1) && (_session->tempo_map().n_meters() == 1)) {
5410
5411                 /* only 1 tempo & 1 meter: ask if the user wants to set the tempo
5412                    at the start, or create a new marker
5413                 */
5414
5415                 vector<string> options;
5416                 options.push_back (_("Cancel"));
5417                 options.push_back (_("Add new marker"));
5418                 options.push_back (_("Set global tempo"));
5419
5420                 Choice c (
5421                         _("Define one bar"),
5422                         _("Do you want to set the global tempo or add a new tempo marker?"),
5423                         options
5424                         );
5425
5426                 c.set_default_response (2);
5427
5428                 switch (c.run()) {
5429                 case 0:
5430                         return;
5431
5432                 case 2:
5433                         do_global = true;
5434                         break;
5435
5436                 default:
5437                         do_global = false;
5438                 }
5439
5440         } else {
5441
5442                 /* more than 1 tempo and/or meter section already, go ahead do the "usual":
5443                    if the marker is at the region starter, change it, otherwise add
5444                    a new tempo marker
5445                 */
5446         }
5447
5448         begin_reversible_command (_("set tempo from region"));
5449         XMLNode& before (_session->tempo_map().get_state());
5450
5451         if (do_global) {
5452                 _session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type());
5453         } else if (t.frame() == start) {
5454                 _session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type());
5455         } else {
5456                 _session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), start);
5457         }
5458
5459         XMLNode& after (_session->tempo_map().get_state());
5460
5461         _session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
5462         commit_reversible_command ();
5463 }
5464
5465 void
5466 Editor::split_region_at_transients ()
5467 {
5468         AnalysisFeatureList positions;
5469
5470         RegionSelection rs = get_regions_from_selection_and_entered ();
5471
5472         if (!_session || rs.empty()) {
5473                 return;
5474         }
5475
5476         _session->begin_reversible_command (_("split regions"));
5477
5478         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
5479
5480                 RegionSelection::iterator tmp;
5481
5482                 tmp = i;
5483                 ++tmp;
5484
5485                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i)->region());
5486
5487                 if (ar && (ar->get_transients (positions) == 0)) {
5488                         split_region_at_points ((*i)->region(), positions, true);
5489                         positions.clear ();
5490                 }
5491
5492                 i = tmp;
5493         }
5494
5495         _session->commit_reversible_command ();
5496
5497 }
5498
5499 void
5500 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret, bool select_new)
5501 {
5502         bool use_rhythmic_rodent = false;
5503
5504         boost::shared_ptr<Playlist> pl = r->playlist();
5505
5506         list<boost::shared_ptr<Region> > new_regions;
5507
5508         if (!pl) {
5509                 return;
5510         }
5511
5512         if (positions.empty()) {
5513                 return;
5514         }
5515
5516
5517         if (positions.size() > 20 && can_ferret) {
5518                 std::string msgstr = string_compose (_("You are about to split\n%1\ninto %2 pieces.\nThis could take a long time."), r->name(), positions.size() + 1);
5519                 MessageDialog msg (msgstr,
5520                                    false,
5521                                    Gtk::MESSAGE_INFO,
5522                                    Gtk::BUTTONS_OK_CANCEL);
5523
5524                 if (can_ferret) {
5525                         msg.add_button (_("Call for the Ferret!"), RESPONSE_APPLY);
5526                         msg.set_secondary_text (_("Press OK to continue with this split operation\nor ask the Ferret dialog to tune the analysis"));
5527                 } else {
5528                         msg.set_secondary_text (_("Press OK to continue with this split operation"));
5529                 }
5530
5531                 msg.set_title (_("Excessive split?"));
5532                 msg.present ();
5533
5534                 int response = msg.run();
5535                 msg.hide ();
5536
5537                 switch (response) {
5538                 case RESPONSE_OK:
5539                         break;
5540                 case RESPONSE_APPLY:
5541                         use_rhythmic_rodent = true;
5542                         break;
5543                 default:
5544                         return;
5545                 }
5546         }
5547
5548         if (use_rhythmic_rodent) {
5549                 show_rhythm_ferret ();
5550                 return;
5551         }
5552
5553         AnalysisFeatureList::const_iterator x;
5554
5555         pl->clear_changes ();
5556
5557         x = positions.begin();
5558
5559         if (x == positions.end()) {
5560                 return;
5561         }
5562
5563         pl->freeze ();
5564         pl->remove_region (r);
5565
5566         framepos_t pos = 0;
5567
5568         while (x != positions.end()) {
5569
5570                 /* deal with positons that are out of scope of present region bounds */
5571                 if (*x <= 0 || *x > r->length()) {
5572                         ++x;
5573                         continue;
5574                 }
5575
5576                 /* file start = original start + how far we from the initial position ?
5577                  */
5578
5579                 framepos_t file_start = r->start() + pos;
5580
5581                 /* length = next position - current position
5582                  */
5583
5584                 framepos_t len = (*x) - pos;
5585
5586                 /* XXX we do we really want to allow even single-sample regions?
5587                    shouldn't we have some kind of lower limit on region size?
5588                 */
5589
5590                 if (len <= 0) {
5591                         break;
5592                 }
5593
5594                 string new_name;
5595
5596                 if (RegionFactory::region_name (new_name, r->name())) {
5597                         break;
5598                 }
5599
5600                 /* do NOT announce new regions 1 by one, just wait till they are all done */
5601
5602                 PropertyList plist;
5603
5604                 plist.add (ARDOUR::Properties::start, file_start);
5605                 plist.add (ARDOUR::Properties::length, len);
5606                 plist.add (ARDOUR::Properties::name, new_name);
5607                 plist.add (ARDOUR::Properties::layer, 0);
5608
5609                 boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
5610
5611                 pl->add_region (nr, r->position() + pos);
5612
5613                 if (select_new) {
5614                         new_regions.push_front(nr);
5615                 }
5616
5617                 pos += len;
5618                 ++x;
5619         }
5620
5621         string new_name;
5622
5623         RegionFactory::region_name (new_name, r->name());
5624
5625         /* Add the final region */
5626         PropertyList plist;
5627
5628         plist.add (ARDOUR::Properties::start, r->start() + pos);
5629         plist.add (ARDOUR::Properties::length, r->last_frame() - (r->position() + pos) + 1);
5630         plist.add (ARDOUR::Properties::name, new_name);
5631         plist.add (ARDOUR::Properties::layer, 0);
5632
5633         boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
5634         pl->add_region (nr, r->position() + pos);
5635
5636         if (select_new) {
5637                 new_regions.push_front(nr);
5638         }
5639
5640         pl->thaw ();
5641
5642         _session->add_command (new StatefulDiffCommand (pl));
5643
5644         if (select_new) {
5645
5646                 for (list<boost::shared_ptr<Region> >::iterator i = new_regions.begin(); i != new_regions.end(); ++i){
5647                         set_selected_regionview_from_region_list ((*i), Selection::Add);
5648                 }
5649         }
5650 }
5651
5652 void
5653 Editor::place_transient()
5654 {
5655         if (!_session) {
5656                 return;
5657         }
5658
5659         RegionSelection rs = get_regions_from_selection_and_edit_point ();
5660
5661         if (rs.empty()) {
5662                 return;
5663         }
5664
5665         framepos_t where = get_preferred_edit_position();
5666
5667         _session->begin_reversible_command (_("place transient"));
5668
5669         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5670                 framepos_t position = (*r)->region()->position();
5671                 (*r)->region()->add_transient(where - position);
5672         }
5673
5674         _session->commit_reversible_command ();
5675 }
5676
5677 void
5678 Editor::remove_transient(ArdourCanvas::Item* item)
5679 {
5680         if (!_session) {
5681                 return;
5682         }
5683
5684         ArdourCanvas::Line* _line = reinterpret_cast<ArdourCanvas::Line*> (item);
5685         assert (_line);
5686
5687         AudioRegionView* _arv = reinterpret_cast<AudioRegionView*> (item->get_data ("regionview"));
5688         _arv->remove_transient (*(float*) _line->get_data ("position"));
5689 }
5690
5691 void
5692 Editor::snap_regions_to_grid ()
5693 {
5694         list <boost::shared_ptr<Playlist > > used_playlists;
5695
5696         RegionSelection rs = get_regions_from_selection_and_entered ();
5697
5698         if (!_session || rs.empty()) {
5699                 return;
5700         }
5701
5702         _session->begin_reversible_command (_("snap regions to grid"));
5703
5704         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5705
5706                 boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
5707
5708                 if (!pl->frozen()) {
5709                         /* we haven't seen this playlist before */
5710
5711                         /* remember used playlists so we can thaw them later */
5712                         used_playlists.push_back(pl);
5713                         pl->freeze();
5714                 }
5715
5716                 framepos_t start_frame = (*r)->region()->first_frame ();
5717                 snap_to (start_frame);
5718                 (*r)->region()->set_position (start_frame);
5719         }
5720
5721         while (used_playlists.size() > 0) {
5722                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
5723                 (*i)->thaw();
5724                 used_playlists.pop_front();
5725         }
5726
5727         _session->commit_reversible_command ();
5728 }
5729
5730 void
5731 Editor::close_region_gaps ()
5732 {
5733         list <boost::shared_ptr<Playlist > > used_playlists;
5734
5735         RegionSelection rs = get_regions_from_selection_and_entered ();
5736
5737         if (!_session || rs.empty()) {
5738                 return;
5739         }
5740
5741         Dialog dialog (_("Close Region Gaps"));
5742
5743         Table table (2, 3);
5744         table.set_spacings (12);
5745         table.set_border_width (12);
5746         Label* l = manage (new Label (_("Crossfade length")));
5747         l->set_alignment (0, 0.5);
5748         table.attach (*l, 0, 1, 0, 1);
5749
5750         SpinButton spin_crossfade (1, 0);
5751         spin_crossfade.set_range (0, 15);
5752         spin_crossfade.set_increments (1, 1);
5753         spin_crossfade.set_value (5);
5754         table.attach (spin_crossfade, 1, 2, 0, 1);
5755
5756         table.attach (*manage (new Label (_("ms"))), 2, 3, 0, 1);
5757
5758         l = manage (new Label (_("Pull-back length")));
5759         l->set_alignment (0, 0.5);
5760         table.attach (*l, 0, 1, 1, 2);
5761
5762         SpinButton spin_pullback (1, 0);
5763         spin_pullback.set_range (0, 100);
5764         spin_pullback.set_increments (1, 1);
5765         spin_pullback.set_value(30);
5766         table.attach (spin_pullback, 1, 2, 1, 2);
5767
5768         table.attach (*manage (new Label (_("ms"))), 2, 3, 1, 2);
5769
5770         dialog.get_vbox()->pack_start (table);
5771         dialog.add_button (Stock::CANCEL, RESPONSE_CANCEL);
5772         dialog.add_button (_("Ok"), RESPONSE_ACCEPT);
5773         dialog.show_all ();
5774
5775         if (dialog.run () == RESPONSE_CANCEL) {
5776                 return;
5777         }
5778
5779         framepos_t crossfade_len = spin_crossfade.get_value();
5780         framepos_t pull_back_frames = spin_pullback.get_value();
5781
5782         crossfade_len = lrintf (crossfade_len * _session->frame_rate()/1000);
5783         pull_back_frames = lrintf (pull_back_frames * _session->frame_rate()/1000);
5784
5785         /* Iterate over the region list and make adjacent regions overlap by crossfade_len_ms */
5786
5787         _session->begin_reversible_command (_("close region gaps"));
5788
5789         int idx = 0;
5790         boost::shared_ptr<Region> last_region;
5791
5792         rs.sort_by_position_and_track();
5793
5794         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5795
5796                 boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
5797
5798                 if (!pl->frozen()) {
5799                         /* we haven't seen this playlist before */
5800
5801                         /* remember used playlists so we can thaw them later */
5802                         used_playlists.push_back(pl);
5803                         pl->freeze();
5804                 }
5805
5806                 framepos_t position = (*r)->region()->position();
5807
5808                 if (idx == 0 || position < last_region->position()){
5809                         last_region = (*r)->region();
5810                         idx++;
5811                         continue;
5812                 }
5813
5814                 (*r)->region()->trim_front( (position - pull_back_frames));
5815                 last_region->trim_end( (position - pull_back_frames + crossfade_len));
5816
5817                 last_region = (*r)->region();
5818
5819                 idx++;
5820         }
5821
5822         while (used_playlists.size() > 0) {
5823                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
5824                 (*i)->thaw();
5825                 used_playlists.pop_front();
5826         }
5827
5828         _session->commit_reversible_command ();
5829 }
5830
5831 void
5832 Editor::tab_to_transient (bool forward)
5833 {
5834         AnalysisFeatureList positions;
5835
5836         RegionSelection rs = get_regions_from_selection_and_entered ();
5837
5838         if (!_session) {
5839                 return;
5840         }
5841
5842         framepos_t pos = _session->audible_frame ();
5843
5844         if (!selection->tracks.empty()) {
5845
5846                 for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
5847
5848                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
5849
5850                         if (rtv) {
5851                                 boost::shared_ptr<Track> tr = rtv->track();
5852                                 if (tr) {
5853                                         boost::shared_ptr<Playlist> pl = tr->playlist ();
5854                                         if (pl) {
5855                                                 framepos_t result = pl->find_next_transient (pos, forward ? 1 : -1);
5856
5857                                                 if (result >= 0) {
5858                                                         positions.push_back (result);
5859                                                 }
5860                                         }
5861                                 }
5862                         }
5863                 }
5864
5865         } else {
5866
5867                 if (rs.empty()) {
5868                         return;
5869                 }
5870
5871                 for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5872                         (*r)->region()->get_transients (positions);
5873                 }
5874         }
5875
5876         TransientDetector::cleanup_transients (positions, _session->frame_rate(), 3.0);
5877
5878         if (forward) {
5879                 AnalysisFeatureList::iterator x;
5880
5881                 for (x = positions.begin(); x != positions.end(); ++x) {
5882                         if ((*x) > pos) {
5883                                 break;
5884                         }
5885                 }
5886
5887                 if (x != positions.end ()) {
5888                         _session->request_locate (*x);
5889                 }
5890
5891         } else {
5892                 AnalysisFeatureList::reverse_iterator x;
5893
5894                 for (x = positions.rbegin(); x != positions.rend(); ++x) {
5895                         if ((*x) < pos) {
5896                                 break;
5897                         }
5898                 }
5899
5900                 if (x != positions.rend ()) {
5901                         _session->request_locate (*x);
5902                 }
5903         }
5904 }
5905
5906 void
5907 Editor::playhead_forward_to_grid ()
5908 {
5909         if (!_session) return;
5910         framepos_t pos = playhead_cursor->current_frame;
5911         if (pos < max_framepos - 1) {
5912                 pos += 2;
5913                 snap_to_internal (pos, 1, false);
5914                 _session->request_locate (pos);
5915         }
5916 }
5917
5918
5919 void
5920 Editor::playhead_backward_to_grid ()
5921 {
5922         if (!_session) return;
5923         framepos_t pos = playhead_cursor->current_frame;
5924         if (pos > 2) {
5925                 pos -= 2;
5926                 snap_to_internal (pos, -1, false);
5927                 _session->request_locate (pos);
5928         }
5929 }
5930
5931 void
5932 Editor::set_track_height (Height h)
5933 {
5934         TrackSelection& ts (selection->tracks);
5935
5936         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5937                 (*x)->set_height_enum (h);
5938         }
5939 }
5940
5941 void
5942 Editor::toggle_tracks_active ()
5943 {
5944         TrackSelection& ts (selection->tracks);
5945         bool first = true;
5946         bool target = false;
5947
5948         if (ts.empty()) {
5949                 return;
5950         }
5951
5952         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5953                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*x);
5954
5955                 if (rtv) {
5956                         if (first) {
5957                                 target = !rtv->_route->active();
5958                                 first = false;
5959                         }
5960                         rtv->_route->set_active (target, this);
5961                 }
5962         }
5963 }
5964
5965 void
5966 Editor::remove_tracks ()
5967 {
5968         TrackSelection& ts (selection->tracks);
5969
5970         if (ts.empty()) {
5971                 return;
5972         }
5973
5974         vector<string> choices;
5975         string prompt;
5976         int ntracks = 0;
5977         int nbusses = 0;
5978         const char* trackstr;
5979         const char* busstr;
5980         vector<boost::shared_ptr<Route> > routes;
5981         bool special_bus = false;
5982
5983         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5984                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*x);
5985                 if (rtv) {
5986                         if (rtv->is_track()) {
5987                                 ntracks++;
5988                         } else {
5989                                 nbusses++;
5990                         }
5991                 }
5992                 routes.push_back (rtv->_route);
5993
5994                 if (rtv->route()->is_master() || rtv->route()->is_monitor()) {
5995                         special_bus = true;
5996                 }
5997         }
5998
5999         if (special_bus && !Config->get_allow_special_bus_removal()) {
6000                 MessageDialog msg (_("That would be bad news ...."),
6001                                    false,
6002                                    Gtk::MESSAGE_INFO,
6003                                    Gtk::BUTTONS_OK);
6004                 msg.set_secondary_text (string_compose (_(
6005                                                                 "Removing the master or monitor bus is such a bad idea\n\
6006 that %1 is not going to allow it.\n\
6007 \n\
6008 If you really want to do this sort of thing\n\
6009 edit your ardour.rc file to set the\n\
6010 \"allow-special-bus-removal\" option to be \"yes\""), PROGRAM_NAME));
6011
6012                 msg.present ();
6013                 msg.run ();
6014                 return;
6015         }
6016
6017         if (ntracks + nbusses == 0) {
6018                 return;
6019         }
6020
6021         if (ntracks > 1) {
6022                 trackstr = _("tracks");
6023         } else {
6024                 trackstr = _("track");
6025         }
6026
6027         if (nbusses > 1) {
6028                 busstr = _("busses");
6029         } else {
6030                 busstr = _("bus");
6031         }
6032
6033         if (ntracks) {
6034                 if (nbusses) {
6035                         prompt  = string_compose (_("Do you really want to remove %1 %2 and %3 %4?\n"
6036                                                     "(You may also lose the playlists associated with the %2)\n\n"
6037                                                     "This action cannot be undone, and the session file will be overwritten!"),
6038                                                   ntracks, trackstr, nbusses, busstr);
6039                 } else {
6040                         prompt  = string_compose (_("Do you really want to remove %1 %2?\n"
6041                                                     "(You may also lose the playlists associated with the %2)\n\n"
6042                                                     "This action cannot be undone, and the session file will be overwritten!"),
6043                                                   ntracks, trackstr);
6044                 }
6045         } else if (nbusses) {
6046                 prompt  = string_compose (_("Do you really want to remove %1 %2?\n\n"
6047                                             "This action cannot be undon, and the session file will be overwritten"),
6048                                           nbusses, busstr);
6049         }
6050
6051         choices.push_back (_("No, do nothing."));
6052         if (ntracks + nbusses > 1) {
6053                 choices.push_back (_("Yes, remove them."));
6054         } else {
6055                 choices.push_back (_("Yes, remove it."));
6056         }
6057
6058         string title;
6059         if (ntracks) {
6060                 title = string_compose (_("Remove %1"), trackstr);
6061         } else {
6062                 title = string_compose (_("Remove %1"), busstr);
6063         }
6064
6065         Choice prompter (title, prompt, choices);
6066
6067         if (prompter.run () != 1) {
6068                 return;
6069         }
6070
6071         for (vector<boost::shared_ptr<Route> >::iterator x = routes.begin(); x != routes.end(); ++x) {
6072                 _session->remove_route (*x);
6073         }
6074 }
6075
6076 void
6077 Editor::do_insert_time ()
6078 {
6079         if (selection->tracks.empty()) {
6080                 return;
6081         }
6082
6083         InsertTimeDialog d (*this);
6084         int response = d.run ();
6085
6086         if (response != RESPONSE_OK) {
6087                 return;
6088         }
6089
6090         if (d.distance() == 0) {
6091                 return;
6092         }
6093
6094         InsertTimeOption opt = d.intersected_region_action ();
6095
6096         insert_time (
6097                 get_preferred_edit_position(),
6098                 d.distance(),
6099                 opt,
6100                 d.move_glued(),
6101                 d.move_markers(),
6102                 d.move_glued_markers(),
6103                 d.move_locked_markers(),
6104                 d.move_tempos()
6105                 );
6106 }
6107
6108 void
6109 Editor::insert_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
6110                      bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too)
6111 {
6112         bool commit = false;
6113
6114         if (Config->get_edit_mode() == Lock) {
6115                 return;
6116         }
6117
6118         begin_reversible_command (_("insert time"));
6119
6120         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
6121                 /* regions */
6122                 boost::shared_ptr<Playlist> pl = (*x)->playlist();
6123
6124                 if (pl) {
6125
6126                         pl->clear_changes ();
6127                         pl->clear_owned_changes ();
6128
6129                         if (opt == SplitIntersected) {
6130                                 pl->split (pos);
6131                         }
6132
6133                         pl->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
6134
6135                         vector<Command*> cmds;
6136                         pl->rdiff (cmds);
6137                         _session->add_commands (cmds);
6138
6139                         _session->add_command (new StatefulDiffCommand (pl));
6140                         commit = true;
6141                 }
6142
6143                 /* automation */
6144                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*x);
6145                 if (rtav) {
6146                         rtav->route ()->shift (pos, frames);
6147                         commit = true;
6148                 }
6149         }
6150
6151         /* markers */
6152         if (markers_too) {
6153                 bool moved = false;
6154                 XMLNode& before (_session->locations()->get_state());
6155                 Locations::LocationList copy (_session->locations()->list());
6156
6157                 for (Locations::LocationList::iterator i = copy.begin(); i != copy.end(); ++i) {
6158
6159                         Locations::LocationList::const_iterator tmp;
6160
6161                         bool const was_locked = (*i)->locked ();
6162                         if (locked_markers_too) {
6163                                 (*i)->unlock ();
6164                         }
6165
6166                         if ((*i)->position_lock_style() == AudioTime || glued_markers_too) {
6167
6168                                 if ((*i)->start() >= pos) {
6169                                         (*i)->set_start ((*i)->start() + frames);
6170                                         if (!(*i)->is_mark()) {
6171                                                 (*i)->set_end ((*i)->end() + frames);
6172                                         }
6173                                         moved = true;
6174                                 }
6175
6176                         }
6177
6178                         if (was_locked) {
6179                                 (*i)->lock ();
6180                         }
6181                 }
6182
6183                 if (moved) {
6184                         XMLNode& after (_session->locations()->get_state());
6185                         _session->add_command (new MementoCommand<Locations>(*_session->locations(), &before, &after));
6186                 }
6187         }
6188
6189         if (tempo_too) {
6190                 _session->tempo_map().insert_time (pos, frames);
6191         }
6192
6193         if (commit) {
6194                 commit_reversible_command ();
6195         }
6196 }
6197
6198 void
6199 Editor::fit_selected_tracks ()
6200 {
6201         if (!selection->tracks.empty()) {
6202                 fit_tracks (selection->tracks);
6203         } else {
6204                 TrackViewList tvl;
6205
6206                 /* no selected tracks - use tracks with selected regions */
6207
6208                 if (!selection->regions.empty()) {
6209                         for (RegionSelection::iterator r = selection->regions.begin(); r != selection->regions.end(); ++r) {
6210                                 tvl.push_back (&(*r)->get_time_axis_view ());
6211                         }
6212
6213                         if (!tvl.empty()) {
6214                                 fit_tracks (tvl);
6215                         }
6216                 } else if (internal_editing()) {
6217                         /* no selected tracks, or regions, but in internal edit mode, so follow the mouse and use
6218                            the entered track
6219                         */
6220                         if (entered_track) {
6221                                 tvl.push_back (entered_track);
6222                                 fit_tracks (tvl);
6223                         }
6224                 }
6225         }
6226 }
6227
6228 void
6229 Editor::fit_tracks (TrackViewList & tracks)
6230 {
6231         if (tracks.empty()) {
6232                 return;
6233         }
6234
6235         uint32_t child_heights = 0;
6236         int visible_tracks = 0;
6237
6238         for (TrackSelection::iterator t = tracks.begin(); t != tracks.end(); ++t) {
6239
6240                 if (!(*t)->marked_for_display()) {
6241                         continue;
6242                 }
6243
6244                 child_heights += (*t)->effective_height() - (*t)->current_height();
6245                 ++visible_tracks;
6246         }
6247
6248         uint32_t h = (uint32_t) floor ((_canvas_height - child_heights - canvas_timebars_vsize) / visible_tracks);
6249         double first_y_pos = DBL_MAX;
6250
6251         if (h < TimeAxisView::preset_height (HeightSmall)) {
6252                 MessageDialog msg (*this, _("There are too many tracks to fit in the current window"));
6253                 /* too small to be displayed */
6254                 return;
6255         }
6256
6257         undo_visual_stack.push_back (current_visual_state());
6258
6259         /* build a list of all tracks, including children */
6260
6261         TrackViewList all;
6262         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
6263                 all.push_back (*i);
6264                 TimeAxisView::Children c = (*i)->get_child_list ();
6265                 for (TimeAxisView::Children::iterator j = c.begin(); j != c.end(); ++j) {
6266                         all.push_back (j->get());
6267                 }
6268         }
6269
6270         /* operate on all tracks, hide unselected ones that are in the middle of selected ones */
6271
6272         bool prev_was_selected = false;
6273         bool is_selected = tracks.contains (all.front());
6274         bool next_is_selected;
6275
6276         for (TrackViewList::iterator t = all.begin(); t != all.end(); ++t) {
6277
6278                 TrackViewList::iterator next;
6279
6280                 next = t;
6281                 ++next;
6282
6283                 if (next != all.end()) {
6284                         next_is_selected = tracks.contains (*next);
6285                 } else {
6286                         next_is_selected = false;
6287                 }
6288
6289                 if ((*t)->marked_for_display ()) {
6290                         if (is_selected) {
6291                                 (*t)->set_height (h);
6292                                 first_y_pos = std::min ((*t)->y_position (), first_y_pos);
6293                         } else {
6294                                 if (prev_was_selected && next_is_selected) {
6295                                         hide_track_in_display (*t);
6296                                 }
6297                         }
6298                 }
6299
6300                 prev_was_selected = is_selected;
6301                 is_selected = next_is_selected;
6302         }
6303
6304         /*
6305            set the controls_layout height now, because waiting for its size
6306            request signal handler will cause the vertical adjustment setting to fail
6307         */
6308
6309         controls_layout.property_height () = full_canvas_height - canvas_timebars_vsize;
6310         vertical_adjustment.set_value (first_y_pos);
6311
6312         redo_visual_stack.push_back (current_visual_state());
6313 }
6314
6315 void
6316 Editor::save_visual_state (uint32_t n)
6317 {
6318         while (visual_states.size() <= n) {
6319                 visual_states.push_back (0);
6320         }
6321
6322         delete visual_states[n];
6323
6324         visual_states[n] = current_visual_state (true);
6325         gdk_beep ();
6326 }
6327
6328 void
6329 Editor::goto_visual_state (uint32_t n)
6330 {
6331         if (visual_states.size() <= n) {
6332                 return;
6333         }
6334
6335         if (visual_states[n] == 0) {
6336                 return;
6337         }
6338
6339         use_visual_state (*visual_states[n]);
6340 }
6341
6342 void
6343 Editor::start_visual_state_op (uint32_t n)
6344 {
6345         if (visual_state_op_connection.empty()) {
6346                 visual_state_op_connection = Glib::signal_timeout().connect (sigc::bind (sigc::mem_fun (*this, &Editor::end_visual_state_op), n), 1000);
6347         }
6348 }
6349
6350 void
6351 Editor::cancel_visual_state_op (uint32_t n)
6352 {
6353         if (!visual_state_op_connection.empty()) {
6354                 visual_state_op_connection.disconnect();
6355                 goto_visual_state (n);
6356         }  else {
6357                 //we land here if called from the menu OR if end_visual_state_op has been called
6358                 //so check if we are already in visual state n
6359                 // XXX not yet checking it at all, but redoing does not hurt
6360                 goto_visual_state (n);
6361         }
6362 }
6363
6364 bool
6365 Editor::end_visual_state_op (uint32_t n)
6366 {
6367         visual_state_op_connection.disconnect();
6368         save_visual_state (n);
6369
6370         PopUp* pup = new PopUp (WIN_POS_MOUSE, 1000, true);
6371         char buf[32];
6372         snprintf (buf, sizeof (buf), _("Saved view %u"), n+1);
6373         pup->set_text (buf);
6374         pup->touch();
6375
6376         return false; // do not call again
6377 }
6378
6379 void
6380 Editor::toggle_region_mute ()
6381 {
6382         if (_ignore_region_action) {
6383                 return;
6384         }
6385
6386         RegionSelection rs = get_regions_from_selection_and_entered ();
6387
6388         if (rs.empty ()) {
6389                 return;
6390         }
6391
6392         if (rs.size() > 1) {
6393                 begin_reversible_command (_("mute regions"));
6394         } else {
6395                 begin_reversible_command (_("mute region"));
6396         }
6397
6398         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
6399
6400                 (*i)->region()->playlist()->clear_changes ();
6401                 (*i)->region()->set_muted (!(*i)->region()->muted ());
6402                 _session->add_command (new StatefulDiffCommand ((*i)->region()->playlist()));
6403
6404         }
6405
6406         commit_reversible_command ();
6407 }
6408
6409 void
6410 Editor::combine_regions ()
6411 {
6412         /* foreach track with selected regions, take all selected regions
6413            and join them into a new region containing the subregions (as a
6414            playlist)
6415         */
6416
6417         typedef set<RouteTimeAxisView*> RTVS;
6418         RTVS tracks;
6419
6420         if (selection->regions.empty()) {
6421                 return;
6422         }
6423
6424         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
6425                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
6426
6427                 if (rtv) {
6428                         tracks.insert (rtv);
6429                 }
6430         }
6431
6432         begin_reversible_command (_("combine regions"));
6433
6434         vector<RegionView*> new_selection;
6435
6436         for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
6437                 RegionView* rv;
6438
6439                 if ((rv = (*i)->combine_regions ()) != 0) {
6440                         new_selection.push_back (rv);
6441                 }
6442         }
6443
6444         selection->clear_regions ();
6445         for (vector<RegionView*>::iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
6446                 selection->add (*i);
6447         }
6448
6449         commit_reversible_command ();
6450 }
6451
6452 void
6453 Editor::uncombine_regions ()
6454 {
6455         typedef set<RouteTimeAxisView*> RTVS;
6456         RTVS tracks;
6457
6458         if (selection->regions.empty()) {
6459                 return;
6460         }
6461
6462         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
6463                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
6464
6465                 if (rtv) {
6466                         tracks.insert (rtv);
6467                 }
6468         }
6469
6470         begin_reversible_command (_("uncombine regions"));
6471
6472         for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
6473                 (*i)->uncombine_regions ();
6474         }
6475
6476         commit_reversible_command ();
6477 }
6478