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
  29 #include <pbd/error.h>
  30 #include <pbd/basename.h>
  31 #include <pbd/pthread_utils.h>
  32 #include <pbd/memento_command.h>
  33 #include <pbd/whitespace.h>
  34
  35 #include <gtkmm2ext/utils.h>
  36 #include <gtkmm2ext/choice.h>
  37 #include <gtkmm2ext/window_title.h>
  38
  39 #include <ardour/audioengine.h>
  40 #include <ardour/session.h>
  41 #include <ardour/audioplaylist.h>
  42 #include <ardour/audioregion.h>
  43 #include <ardour/audio_diskstream.h>
  44 #include <ardour/utils.h>
  45 #include <ardour/location.h>
  46 #include <ardour/named_selection.h>
  47 #include <ardour/audio_track.h>
  48 #include <ardour/audiofilesource.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
  57 #include "ardour_ui.h"
  58 #include "editor.h"
  59 #include "time_axis_view.h"
  60 #include "route_time_axis.h"
  61 #include "audio_time_axis.h"
  62 #include "automation_time_axis.h"
  63 #include "streamview.h"
  64 #include "audio_region_view.h"
  65 #include "midi_region_view.h"
  66 #include "rgb_macros.h"
  67 #include "selection_templates.h"
  68 #include "selection.h"
  69 #include "editing.h"
  70 #include "gtk-custom-hruler.h"
  71 #include "gui_thread.h"
  72 #include "keyboard.h"
  73 #include "utils.h"
  74
  75 #include "i18n.h"
  76
  77 using namespace std;
  78 using namespace ARDOUR;
  79 using namespace PBD;
  80 using namespace sigc;
  81 using namespace Gtk;
  82 using namespace Gtkmm2ext;
  83 using namespace Editing;
  84
  85 /***********************************************************************
  86   Editor operations
  87  ***********************************************************************/
  88
  89 void
  90 Editor::undo (uint32_t n)
  91 {
  92         if (session) {
  93                 session->undo (n);
  94         }
  95 }
  96
  97 void
  98 Editor::redo (uint32_t n)
  99 {
 100         if (session) {
 101                 session->redo (n);
 102         }
 103 }
 104
 105 void
 106 Editor::split_region ()
 107 {
 108         split_region_at (get_preferred_edit_position());
 109 }
 110
 111 void
 112 Editor::split_region_at (nframes_t where)
 113 {
 114         RegionSelection rs;
 115
 116         get_regions_for_action (rs);
 117         split_regions_at (where, selection->regions);
 118 }
 119
 120 void
 121 Editor::split_regions_at (nframes_t where, RegionSelection& regions)
 122 {
 123         list <boost::shared_ptr<Playlist > > used_playlists;
 124
 125         if (regions.empty()) {
 126                 return;
 127         }
 128
 129         begin_reversible_command (_("split"));
 130
 131         // if splitting a single region, and snap-to is using
 132         // region boundaries, don't pay attention to them
 133
 134         if (regions.size() == 1) {
 135                 switch (snap_type) {
 136                 case SnapToRegionStart:
 137                 case SnapToRegionSync:
 138                 case SnapToRegionEnd:
 139                         break;
 140                 default:
 141                         snap_to (where);
 142                 }
 143         } else {
 144                 snap_to (where);
 145         }
 146
 147         for (RegionSelection::iterator a = regions.begin(); a != regions.end(); ) {
 148
 149                 RegionSelection::iterator tmp;
 150
 151                 /* XXX this test needs to be more complicated, to make sure we really
 152                    have something to split.
 153                 */
 154
 155                 if (!(*a)->region()->covers (where)) {
 156                         ++a;
 157                         continue;
 158                 }
 159
 160                 tmp = a;
 161                 ++tmp;
 162
 163                 boost::shared_ptr<Playlist> pl = (*a)->region()->playlist();
 164
 165                 if (! pl->frozen()) {
 166                         /* we haven't seen this playlist before */
 167
 168                         /* remember used playlists so we can thaw them later */
 169                         used_playlists.push_back(pl);
 170                         pl->freeze();
 171                 }
 172
 173                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*a);
 174
 175                 if (arv) {
 176                         _new_regionviews_show_envelope = arv->envelope_visible();
 177                 }
 178
 179                 if (pl) {
 180                         XMLNode &before = pl->get_state();
 181                         pl->split_region ((*a)->region(), where);
 182                         XMLNode &after = pl->get_state();
 183                         session->add_command(new MementoCommand<Playlist>(*pl, &before, &after));
 184                 }
 185
 186                 a = tmp;
 187         }
 188         while (used_playlists.size() > 0) {
 189
 190                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
 191                 (*i)->thaw();
 192                 used_playlists.pop_front();
 193         }
 194         commit_reversible_command ();
 195         _new_regionviews_show_envelope = false;
 196 }
 197
 198
 199 /** Remove `clicked_regionview' */
 200 void
 201 Editor::remove_clicked_region ()
 202 {
 203         if (clicked_routeview == 0 || clicked_regionview == 0) {
 204                 return;
 205         }
 206
 207         boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
 208
 209         begin_reversible_command (_("remove region"));
 210         XMLNode &before = playlist->get_state();
 211         playlist->remove_region (clicked_regionview->region());
 212         XMLNode &after = playlist->get_state();
 213         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 214         commit_reversible_command ();
 215 }
 216
 217
 218 /** Remove the selected regions */
 219 void
 220 Editor::remove_selected_regions ()
 221 {
 222         if (selection->regions.empty()) {
 223                 return;
 224         }
 225
 226         /* XXX: should be called remove regions if we're removing more than one */
 227         begin_reversible_command (_("remove region"));
 228
 229
 230         while (!selection->regions.empty()) {
 231                 boost::shared_ptr<Region> region = selection->regions.front()->region ();
 232                 boost::shared_ptr<Playlist> playlist = region->playlist ();
 233
 234                 XMLNode &before = playlist->get_state();
 235                 playlist->remove_region (region);
 236                 XMLNode &after = playlist->get_state();
 237                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 238         }
 239
 240         commit_reversible_command ();
 241 }
 242
 243 boost::shared_ptr<Region>
 244 Editor::select_region_for_operation (int dir, TimeAxisView **tv)
 245 {
 246         RegionView* rv;
 247         boost::shared_ptr<Region> region;
 248         nframes_t start = 0;
 249
 250         if (selection->time.start () == selection->time.end_frame ()) {
 251
 252                 /* no current selection-> is there a selected regionview? */
 253
 254                 if (selection->regions.empty()) {
 255                         return region;
 256                 }
 257
 258         }
 259
 260         if (!selection->regions.empty()) {
 261
 262                 rv = *(selection->regions.begin());
 263                 (*tv) = &rv->get_time_axis_view();
 264                 region = rv->region();
 265
 266         } else if (!selection->tracks.empty()) {
 267
 268                 (*tv) = selection->tracks.front();
 269
 270                 RouteTimeAxisView* rtv;
 271
 272                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*tv)) != 0) {
 273                         boost::shared_ptr<Playlist> pl;
 274
 275                         if ((pl = rtv->playlist()) == 0) {
 276                                 return region;
 277                         }
 278
 279                         region = pl->top_region_at (start);
 280                 }
 281         }
 282
 283         return region;
 284 }
 285
 286 void
 287 Editor::extend_selection_to_end_of_region (bool next)
 288 {
 289         TimeAxisView *tv;
 290         boost::shared_ptr<Region> region;
 291         nframes_t start;
 292
 293         if ((region = select_region_for_operation (next ? 1 : 0, &tv)) == 0) {
 294                 return;
 295         }
 296
 297         if (region && selection->time.start () == selection->time.end_frame ()) {
 298                 start = region->position();
 299         } else {
 300                 start = selection->time.start ();
 301         }
 302
 303         /* Try to leave the selection with the same route if possible */
 304
 305         if ((tv = selection->time.track) == 0) {
 306                 return;
 307         }
 308
 309         begin_reversible_command (_("extend selection"));
 310         selection->set (tv, start, region->position() + region->length());
 311         commit_reversible_command ();
 312 }
 313
 314 void
 315 Editor::extend_selection_to_start_of_region (bool previous)
 316 {
 317         TimeAxisView *tv;
 318         boost::shared_ptr<Region> region;
 319         nframes_t end;
 320
 321         if ((region = select_region_for_operation (previous ? -1 : 0, &tv)) == 0) {
 322                 return;
 323         }
 324
 325         if (region && selection->time.start () == selection->time.end_frame ()) {
 326                 end = region->position() + region->length();
 327         } else {
 328                 end = selection->time.end_frame ();
 329         }
 330
 331         /* Try to leave the selection with the same route if possible */
 332
 333         if ((tv = selection->time.track) == 0) {
 334                 return;
 335         }
 336
 337         begin_reversible_command (_("extend selection"));
 338         selection->set (tv, region->position(), end);
 339         commit_reversible_command ();
 340 }
 341
 342 bool
 343 Editor::nudge_forward_release (GdkEventButton* ev)
 344 {
 345         if (ev->state & Keyboard::PrimaryModifier) {
 346                 nudge_forward (false, true);
 347         } else {
 348                 nudge_forward (false, false);
 349         }
 350         return false;
 351 }
 352
 353 bool
 354 Editor::nudge_backward_release (GdkEventButton* ev)
 355 {
 356         if (ev->state & Keyboard::PrimaryModifier) {
 357                 nudge_backward (false, true);
 358         } else {
 359                 nudge_backward (false, false);
 360         }
 361         return false;
 362 }
 363
 364
 365 void
 366 Editor::nudge_forward (bool next, bool force_playhead)
 367 {
 368         nframes_t distance;
 369         nframes_t next_distance;
 370         RegionSelection rs;
 371
 372         get_regions_for_action (rs);
 373
 374         if (!session) return;
 375
 376         if (!force_playhead && !rs.empty()) {
 377
 378                 begin_reversible_command (_("nudge regions forward"));
 379
 380                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 381                         boost::shared_ptr<Region> r ((*i)->region());
 382
 383                         distance = get_nudge_distance (r->position(), next_distance);
 384
 385                         if (next) {
 386                                 distance = next_distance;
 387                         }
 388
 389                         XMLNode &before = r->playlist()->get_state();
 390                         r->set_position (r->position() + distance, this);
 391                         XMLNode &after = r->playlist()->get_state();
 392                         session->add_command (new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 393                 }
 394
 395                 commit_reversible_command ();
 396
 397
 398         } else if (!force_playhead && !selection->markers.empty()) {
 399
 400                 bool is_start;
 401                 Location* loc = find_location_from_marker (selection->markers.front(), is_start);
 402
 403                 if (loc) {
 404
 405                         begin_reversible_command (_("nudge location forward"));
 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 (max_frames - distance > loc->start() + loc->length()) {
 415                                         loc->set_start (loc->start() + distance);
 416                                 } else {
 417                                         loc->set_start (max_frames - loc->length());
 418                                 }
 419                         } else {
 420                                 distance = get_nudge_distance (loc->end(), next_distance);
 421                                 if (next) {
 422                                         distance = next_distance;
 423                                 }
 424                                 if (max_frames - distance > loc->end()) {
 425                                         loc->set_end (loc->end() + distance);
 426                                 } else {
 427                                         loc->set_end (max_frames);
 428                                 }
 429                         }
 430                         XMLNode& after (loc->get_state());
 431                         session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 432                         commit_reversible_command ();
 433                 }
 434
 435         } else {
 436                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 437                 session->request_locate (playhead_cursor->current_frame + distance);
 438         }
 439 }
 440
 441 void
 442 Editor::nudge_backward (bool next, bool force_playhead)
 443 {
 444         nframes_t distance;
 445         nframes_t next_distance;
 446         RegionSelection rs;
 447
 448         get_regions_for_action (rs);
 449
 450         if (!session) return;
 451
 452         if (!force_playhead && !rs.empty()) {
 453
 454                 begin_reversible_command (_("nudge regions backward"));
 455
 456                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 457                         boost::shared_ptr<Region> r ((*i)->region());
 458
 459                         distance = get_nudge_distance (r->position(), next_distance);
 460
 461                         if (next) {
 462                                 distance = next_distance;
 463                         }
 464
 465                         XMLNode &before = r->playlist()->get_state();
 466
 467                         if (r->position() > distance) {
 468                                 r->set_position (r->position() - distance, this);
 469                         } else {
 470                                 r->set_position (0, this);
 471                         }
 472                         XMLNode &after = r->playlist()->get_state();
 473                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 474                 }
 475
 476                 commit_reversible_command ();
 477
 478         } else if (!force_playhead && !selection->markers.empty()) {
 479
 480                 bool is_start;
 481                 Location* loc = find_location_from_marker (selection->markers.front(), is_start);
 482
 483                 if (loc) {
 484
 485                         begin_reversible_command (_("nudge location forward"));
 486                         XMLNode& before (loc->get_state());
 487
 488                         if (is_start) {
 489                                 distance = get_nudge_distance (loc->start(), next_distance);
 490                                 if (next) {
 491                                         distance = next_distance;
 492                                 }
 493                                 if (distance < loc->start()) {
 494                                         loc->set_start (loc->start() - distance);
 495                                 } else {
 496                                         loc->set_start (0);
 497                                 }
 498                         } else {
 499                                 distance = get_nudge_distance (loc->end(), next_distance);
 500
 501                                 if (next) {
 502                                         distance = next_distance;
 503                                 }
 504
 505                                 if (distance < loc->end() - loc->length()) {
 506                                         loc->set_end (loc->end() - distance);
 507                                 } else {
 508                                         loc->set_end (loc->length());
 509                                 }
 510                         }
 511
 512                         XMLNode& after (loc->get_state());
 513                         session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 514                 }
 515
 516         } else {
 517
 518                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 519
 520                 if (playhead_cursor->current_frame > distance) {
 521                         session->request_locate (playhead_cursor->current_frame - distance);
 522                 } else {
 523                         session->goto_start();
 524                 }
 525         }
 526 }
 527
 528 void
 529 Editor::nudge_forward_capture_offset ()
 530 {
 531         nframes_t distance;
 532         RegionSelection rs;
 533
 534         get_regions_for_action (rs);
 535
 536         if (!session) return;
 537
 538         if (!rs.empty()) {
 539
 540                 begin_reversible_command (_("nudge forward"));
 541
 542                 distance = session->worst_output_latency();
 543
 544                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 545                         boost::shared_ptr<Region> r ((*i)->region());
 546
 547                         XMLNode &before = r->playlist()->get_state();
 548                         r->set_position (r->position() + distance, this);
 549                         XMLNode &after = r->playlist()->get_state();
 550                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 551                 }
 552
 553                 commit_reversible_command ();
 554
 555         }
 556 }
 557
 558 void
 559 Editor::nudge_backward_capture_offset ()
 560 {
 561         nframes_t distance;
 562         RegionSelection rs;
 563
 564         get_regions_for_action (rs);
 565
 566         if (!session) return;
 567
 568         if (!rs.empty()) {
 569
 570                 begin_reversible_command (_("nudge forward"));
 571
 572                 distance = session->worst_output_latency();
 573
 574                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 575                         boost::shared_ptr<Region> r ((*i)->region());
 576
 577                         XMLNode &before = r->playlist()->get_state();
 578
 579                         if (r->position() > distance) {
 580                                 r->set_position (r->position() - distance, this);
 581                         } else {
 582                                 r->set_position (0, this);
 583                         }
 584                         XMLNode &after = r->playlist()->get_state();
 585                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 586                 }
 587
 588                 commit_reversible_command ();
 589         }
 590 }
 591
 592 /* DISPLAY MOTION */
 593
 594 void
 595 Editor::move_to_start ()
 596 {
 597         session->goto_start ();
 598 }
 599
 600 void
 601 Editor::move_to_end ()
 602 {
 603
 604         session->request_locate (session->current_end_frame());
 605 }
 606
 607 void
 608 Editor::build_region_boundary_cache ()
 609 {
 610         nframes_t pos = 0;
 611         vector<RegionPoint> interesting_points;
 612         boost::shared_ptr<Region> r;
 613         TrackViewList tracks;
 614         bool at_end = false;
 615
 616         region_boundary_cache.clear ();
 617
 618         if (session == 0) {
 619                 return;
 620         }
 621
 622         switch (snap_type) {
 623         case SnapToRegionStart:
 624                 interesting_points.push_back (Start);
 625                 break;
 626         case SnapToRegionEnd:
 627                 interesting_points.push_back (End);
 628                 break;
 629         case SnapToRegionSync:
 630                 interesting_points.push_back (SyncPoint);
 631                 break;
 632         case SnapToRegionBoundary:
 633                 interesting_points.push_back (Start);
 634                 interesting_points.push_back (End);
 635                 break;
 636         default:
 637                 fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), snap_type) << endmsg;
 638                 /*NOTREACHED*/
 639                 return;
 640         }
 641
 642         TimeAxisView *ontrack = 0;
 643         TrackViewList tlist;
 644
 645         if (!selection->tracks.empty()) {
 646                 tlist = selection->tracks;
 647         } else {
 648                 tlist = track_views;
 649         }
 650
 651         while (pos < session->current_end_frame() && !at_end) {
 652
 653                 nframes_t rpos;
 654                 nframes_t lpos = max_frames;
 655
 656                 for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 657
 658                         if ((r = find_next_region (pos, *p, 1, tlist, &ontrack)) == 0) {
 659                                 if (*p == interesting_points.back()) {
 660                                         at_end = true;
 661                                 }
 662                                 /* move to next point type */
 663                                 continue;
 664                         }
 665
 666                         switch (*p) {
 667                         case Start:
 668                                 rpos = r->first_frame();
 669                                 break;
 670
 671                         case End:
 672                                 rpos = r->last_frame();
 673                                 break;
 674
 675                         case SyncPoint:
 676                                 rpos = r->adjust_to_sync (r->first_frame());
 677                                 break;
 678
 679                         default:
 680                                 break;
 681                         }
 682
 683                         float speed = 1.0f;
 684                         RouteTimeAxisView *rtav;
 685
 686                         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 687                                 if (rtav->get_diskstream() != 0) {
 688                                         speed = rtav->get_diskstream()->speed();
 689                                 }
 690                         }
 691
 692                         rpos = track_frame_to_session_frame (rpos, speed);
 693
 694                         if (rpos < lpos) {
 695                                 lpos = rpos;
 696                         }
 697
 698                         /* prevent duplicates, but we don't use set<> because we want to be able
 699                            to sort later.
 700                         */
 701
 702                         vector<nframes_t>::iterator ri;
 703
 704                         for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
 705                                 if (*ri == rpos) {
 706                                         break;
 707                                 }
 708                         }
 709
 710                         if (ri == region_boundary_cache.end()) {
 711                                 region_boundary_cache.push_back (rpos);
 712                         }
 713                 }
 714
 715                 pos = lpos + 1;
 716         }
 717
 718         /* finally sort to be sure that the order is correct */
 719
 720         sort (region_boundary_cache.begin(), region_boundary_cache.end());
 721 }
 722
 723 boost::shared_ptr<Region>
 724 Editor::find_next_region (nframes_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 725 {
 726         TrackViewList::iterator i;
 727         nframes_t closest = max_frames;
 728         boost::shared_ptr<Region> ret;
 729         nframes_t rpos = 0;
 730
 731         float track_speed;
 732         nframes_t track_frame;
 733         RouteTimeAxisView *rtav;
 734
 735         for (i = tracks.begin(); i != tracks.end(); ++i) {
 736
 737                 nframes_t distance;
 738                 boost::shared_ptr<Region> r;
 739
 740                 track_speed = 1.0f;
 741                 if ( (rtav = dynamic_cast<RouteTimeAxisView*>(*i)) != 0 ) {
 742                         if (rtav->get_diskstream()!=0)
 743                                 track_speed = rtav->get_diskstream()->speed();
 744                 }
 745
 746                 track_frame = session_frame_to_track_frame(frame, track_speed);
 747
 748                 if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
 749                         continue;
 750                 }
 751
 752                 switch (point) {
 753                 case Start:
 754                         rpos = r->first_frame ();
 755                         break;
 756
 757                 case End:
 758                         rpos = r->last_frame ();
 759                         break;
 760
 761                 case SyncPoint:
 762                         rpos = r->adjust_to_sync (r->first_frame());
 763                         break;
 764                 }
 765
 766                 // rpos is a "track frame", converting it to "session frame"
 767                 rpos = track_frame_to_session_frame(rpos, track_speed);
 768
 769                 if (rpos > frame) {
 770                         distance = rpos - frame;
 771                 } else {
 772                         distance = frame - rpos;
 773                 }
 774
 775                 if (distance < closest) {
 776                         closest = distance;
 777                         if (ontrack != 0)
 778                                 *ontrack = (*i);
 779                         ret = r;
 780                 }
 781         }
 782
 783         return ret;
 784 }
 785
 786 nframes64_t
 787 Editor::find_next_region_boundary (nframes64_t pos, int32_t dir, const TrackViewList& tracks)
 788 {
 789         nframes64_t distance = max_frames;
 790         nframes64_t current_nearest = -1;
 791
 792         for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
 793                 nframes64_t contender;
 794                 nframes64_t d;
 795
 796                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 797
 798                 if (!rtv) {
 799                         continue;
 800                 }
 801
 802                 if ((contender = rtv->find_next_region_boundary (pos, dir)) < 0) {
 803                         continue;
 804                 }
 805
 806                 d = ::llabs (pos - contender);
 807
 808                 if (d < distance) {
 809                         current_nearest = contender;
 810                         distance = d;
 811                 }
 812         }
 813
 814         return current_nearest;
 815 }
 816
 817 void
 818 Editor::cursor_to_region_boundary (Cursor* cursor, int32_t dir)
 819 {
 820         nframes64_t pos = cursor->current_frame;
 821         nframes64_t target;
 822
 823         if (!session) {
 824                 return;
 825         }
 826
 827         // so we don't find the current region again..
 828         if (dir > 0 || pos > 0) {
 829                 pos += dir;
 830         }
 831
 832         if (!selection->tracks.empty()) {
 833
 834                 target = find_next_region_boundary (pos, dir, selection->tracks);
 835
 836         } else {
 837
 838                 target = find_next_region_boundary (pos, dir, track_views);
 839         }
 840
 841         if (target < 0) {
 842                 return;
 843         }
 844
 845
 846         if (cursor == playhead_cursor) {
 847                 session->request_locate (target);
 848         } else {
 849                 cursor->set_position (target);
 850         }
 851 }
 852
 853 void
 854 Editor::cursor_to_next_region_boundary (Cursor* cursor)
 855 {
 856         cursor_to_region_boundary (cursor, 1);
 857 }
 858
 859 void
 860 Editor::cursor_to_previous_region_boundary (Cursor* cursor)
 861 {
 862         cursor_to_region_boundary (cursor, -1);
 863 }
 864
 865 void
 866 Editor::cursor_to_region_point (Cursor* cursor, RegionPoint point, int32_t dir)
 867 {
 868         boost::shared_ptr<Region> r;
 869         nframes_t pos = cursor->current_frame;
 870
 871         if (!session) {
 872                 return;
 873         }
 874
 875         TimeAxisView *ontrack = 0;
 876
 877         // so we don't find the current region again..
 878         if (dir>0 || pos>0)
 879                 pos+=dir;
 880
 881         if (!selection->tracks.empty()) {
 882
 883                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
 884
 885         } else if (clicked_axisview) {
 886
 887                 TrackViewList t;
 888                 t.push_back (clicked_axisview);
 889
 890                 r = find_next_region (pos, point, dir, t, &ontrack);
 891
 892         } else {
 893
 894                 r = find_next_region (pos, point, dir, track_views, &ontrack);
 895         }
 896
 897         if (r == 0) {
 898                 return;
 899         }
 900
 901         switch (point){
 902         case Start:
 903                 pos = r->first_frame ();
 904                 break;
 905
 906         case End:
 907                 pos = r->last_frame ();
 908                 break;
 909
 910         case SyncPoint:
 911                 pos = r->adjust_to_sync (r->first_frame());
 912                 break;
 913         }
 914
 915         float speed = 1.0f;
 916         RouteTimeAxisView *rtav;
 917
 918         if ( ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 919                 if (rtav->get_diskstream() != 0) {
 920                         speed = rtav->get_diskstream()->speed();
 921                 }
 922         }
 923
 924         pos = track_frame_to_session_frame(pos, speed);
 925
 926         if (cursor == playhead_cursor) {
 927                 session->request_locate (pos);
 928         } else {
 929                 cursor->set_position (pos);
 930         }
 931 }
 932
 933 void
 934 Editor::cursor_to_next_region_point (Cursor* cursor, RegionPoint point)
 935 {
 936         cursor_to_region_point (cursor, point, 1);
 937 }
 938
 939 void
 940 Editor::cursor_to_previous_region_point (Cursor* cursor, RegionPoint point)
 941 {
 942         cursor_to_region_point (cursor, point, -1);
 943 }
 944
 945 void
 946 Editor::cursor_to_selection_start (Cursor *cursor)
 947 {
 948         nframes_t pos = 0;
 949         RegionSelection rs;
 950
 951         get_regions_for_action (rs);
 952
 953         switch (mouse_mode) {
 954         case MouseObject:
 955                 if (!rs.empty()) {
 956                         pos = rs.start();
 957                 }
 958                 break;
 959
 960         case MouseRange:
 961                 if (!selection->time.empty()) {
 962                         pos = selection->time.start ();
 963                 }
 964                 break;
 965
 966         default:
 967                 return;
 968         }
 969
 970         if (cursor == playhead_cursor) {
 971                 session->request_locate (pos);
 972         } else {
 973                 cursor->set_position (pos);
 974         }
 975 }
 976
 977 void
 978 Editor::cursor_to_selection_end (Cursor *cursor)
 979 {
 980         nframes_t pos = 0;
 981         RegionSelection rs;
 982
 983         get_regions_for_action (rs);
 984
 985         switch (mouse_mode) {
 986         case MouseObject:
 987                 if (!rs.empty()) {
 988                         pos = rs.end_frame();
 989                 }
 990                 break;
 991
 992         case MouseRange:
 993                 if (!selection->time.empty()) {
 994                         pos = selection->time.end_frame ();
 995                 }
 996                 break;
 997
 998         default:
 999                 return;
1000         }
1001
1002         if (cursor == playhead_cursor) {
1003                 session->request_locate (pos);
1004         } else {
1005                 cursor->set_position (pos);
1006         }
1007 }
1008
1009 void
1010 Editor::selected_marker_to_region_boundary (int32_t dir)
1011 {
1012         nframes64_t target;
1013         Location* loc;
1014         bool ignored;
1015
1016         if (!session) {
1017                 return;
1018         }
1019
1020         if (selection->markers.empty()) {
1021                 nframes64_t mouse;
1022                 bool ignored;
1023
1024                 if (!mouse_frame (mouse, ignored)) {
1025                         return;
1026                 }
1027
1028                 add_location_mark (mouse);
1029         }
1030
1031         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1032                 return;
1033         }
1034
1035         nframes64_t pos = loc->start();
1036
1037         // so we don't find the current region again..
1038         if (dir > 0 || pos > 0) {
1039                 pos += dir;
1040         }
1041
1042         if (!selection->tracks.empty()) {
1043
1044                 target = find_next_region_boundary (pos, dir, selection->tracks);
1045
1046         } else {
1047
1048                 target = find_next_region_boundary (pos, dir, track_views);
1049         }
1050
1051         if (target < 0) {
1052                 return;
1053         }
1054
1055         loc->move_to (target);
1056 }
1057
1058 void
1059 Editor::selected_marker_to_next_region_boundary ()
1060 {
1061         selected_marker_to_region_boundary (1);
1062 }
1063
1064 void
1065 Editor::selected_marker_to_previous_region_boundary ()
1066 {
1067         selected_marker_to_region_boundary (-1);
1068 }
1069
1070 void
1071 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
1072 {
1073         boost::shared_ptr<Region> r;
1074         nframes_t pos;
1075         Location* loc;
1076         bool ignored;
1077
1078         if (!session || selection->markers.empty()) {
1079                 return;
1080         }
1081
1082         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1083                 return;
1084         }
1085
1086         TimeAxisView *ontrack = 0;
1087
1088         pos = loc->start();
1089
1090         // so we don't find the current region again..
1091         if (dir>0 || pos>0)
1092                 pos+=dir;
1093
1094         if (!selection->tracks.empty()) {
1095
1096                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1097
1098         } else {
1099
1100                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1101         }
1102
1103         if (r == 0) {
1104                 return;
1105         }
1106
1107         switch (point){
1108         case Start:
1109                 pos = r->first_frame ();
1110                 break;
1111
1112         case End:
1113                 pos = r->last_frame ();
1114                 break;
1115
1116         case SyncPoint:
1117                 pos = r->adjust_to_sync (r->first_frame());
1118                 break;
1119         }
1120
1121         float speed = 1.0f;
1122         AudioTimeAxisView *atav;
1123
1124         if ( ontrack != 0 && (atav = dynamic_cast<AudioTimeAxisView*>(ontrack)) != 0 ) {
1125                 if (atav->get_diskstream() != 0) {
1126                         speed = atav->get_diskstream()->speed();
1127                 }
1128         }
1129
1130         pos = track_frame_to_session_frame(pos, speed);
1131
1132         loc->move_to (pos);
1133 }
1134
1135 void
1136 Editor::selected_marker_to_next_region_point (RegionPoint point)
1137 {
1138         selected_marker_to_region_point (point, 1);
1139 }
1140
1141 void
1142 Editor::selected_marker_to_previous_region_point (RegionPoint point)
1143 {
1144         selected_marker_to_region_point (point, -1);
1145 }
1146
1147 void
1148 Editor::selected_marker_to_selection_start ()
1149 {
1150         nframes_t pos = 0;
1151         Location* loc;
1152         bool ignored;
1153
1154         if (!session || selection->markers.empty()) {
1155                 return;
1156         }
1157
1158         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1159                 return;
1160         }
1161
1162         RegionSelection rs;
1163
1164         get_regions_for_action (rs);
1165
1166         switch (mouse_mode) {
1167         case MouseObject:
1168                 if (!rs.empty()) {
1169                         pos = rs.start();
1170                 }
1171                 break;
1172
1173         case MouseRange:
1174                 if (!selection->time.empty()) {
1175                         pos = selection->time.start ();
1176                 }
1177                 break;
1178
1179         default:
1180                 return;
1181         }
1182
1183         loc->move_to (pos);
1184 }
1185
1186 void
1187 Editor::selected_marker_to_selection_end ()
1188 {
1189         nframes_t pos = 0;
1190         Location* loc;
1191         bool ignored;
1192
1193         if (!session || selection->markers.empty()) {
1194                 return;
1195         }
1196
1197         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1198                 return;
1199         }
1200
1201         RegionSelection rs;
1202
1203         get_regions_for_action (rs);
1204
1205         switch (mouse_mode) {
1206         case MouseObject:
1207                 if (!rs.empty()) {
1208                         pos = rs.end_frame();
1209                 }
1210                 break;
1211
1212         case MouseRange:
1213                 if (!selection->time.empty()) {
1214                         pos = selection->time.end_frame ();
1215                 }
1216                 break;
1217
1218         default:
1219                 return;
1220         }
1221
1222         loc->move_to (pos);
1223 }
1224
1225 void
1226 Editor::scroll_playhead (bool forward)
1227 {
1228         nframes_t pos = playhead_cursor->current_frame;
1229         nframes_t delta = (nframes_t) floor (current_page_frames() / 0.8);
1230
1231         if (forward) {
1232                 if (pos == max_frames) {
1233                         return;
1234                 }
1235
1236                 if (pos < max_frames - delta) {
1237                         pos += delta ;
1238                 } else {
1239                         pos = max_frames;
1240                 }
1241
1242         } else {
1243
1244                 if (pos == 0) {
1245                         return;
1246                 }
1247
1248                 if (pos > delta) {
1249                         pos -= delta;
1250                 } else {
1251                         pos = 0;
1252                 }
1253         }
1254
1255         session->request_locate (pos);
1256 }
1257
1258 void
1259 Editor::playhead_backward ()
1260 {
1261         nframes_t pos;
1262         nframes_t cnt;
1263         float prefix;
1264         bool was_floating;
1265
1266         if (get_prefix (prefix, was_floating)) {
1267                 cnt = 1;
1268         } else {
1269                 if (was_floating) {
1270                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1271                 } else {
1272                         cnt = (nframes_t) prefix;
1273                 }
1274         }
1275
1276         pos = playhead_cursor->current_frame;
1277
1278         if ((nframes_t) pos < cnt) {
1279                 pos = 0;
1280         } else {
1281                 pos -= cnt;
1282         }
1283
1284         /* XXX this is completely insane. with the current buffering
1285            design, we'll force a complete track buffer flush and
1286            reload, just to move 1 sample !!!
1287         */
1288
1289         session->request_locate (pos);
1290 }
1291
1292 void
1293 Editor::playhead_forward ()
1294 {
1295         nframes_t pos;
1296         nframes_t cnt;
1297         bool was_floating;
1298         float prefix;
1299
1300         if (get_prefix (prefix, was_floating)) {
1301                 cnt = 1;
1302         } else {
1303                 if (was_floating) {
1304                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1305                 } else {
1306                         cnt = (nframes_t) floor (prefix);
1307                 }
1308         }
1309
1310         pos = playhead_cursor->current_frame;
1311
1312         /* XXX this is completely insane. with the current buffering
1313            design, we'll force a complete track buffer flush and
1314            reload, just to move 1 sample !!!
1315         */
1316
1317         session->request_locate (pos+cnt);
1318 }
1319
1320 void
1321 Editor::cursor_align (bool playhead_to_edit)
1322 {
1323         if (!session) {
1324                 return;
1325         }
1326
1327         if (playhead_to_edit) {
1328
1329                 if (selection->markers.empty()) {
1330                         return;
1331                 }
1332
1333                 session->request_locate (selection->markers.front()->position(), session->transport_rolling());
1334
1335         } else {
1336                 /* move selected markers to playhead */
1337
1338                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
1339                         bool ignored;
1340
1341                         Location* loc = find_location_from_marker (*i, ignored);
1342
1343                         if (loc->is_mark()) {
1344                                 loc->set_start (playhead_cursor->current_frame);
1345                         } else {
1346                                 loc->set (playhead_cursor->current_frame,
1347                                           playhead_cursor->current_frame + loc->length());
1348                         }
1349                 }
1350         }
1351 }
1352
1353 void
1354 Editor::edit_cursor_backward ()
1355 {
1356         nframes64_t pos;
1357         nframes64_t cnt;
1358         float prefix;
1359         bool was_floating;
1360
1361         if (get_prefix (prefix, was_floating)) {
1362                 cnt = 1;
1363         } else {
1364                 if (was_floating) {
1365                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1366                 } else {
1367                         cnt = (nframes_t) prefix;
1368                 }
1369         }
1370
1371         if ((pos = get_preferred_edit_position()) < 0) {
1372                 return;
1373         }
1374
1375         if (pos < cnt) {
1376                 pos = 0;
1377         } else {
1378                 pos -= cnt;
1379         }
1380
1381         // EDIT CURSOR edit_cursor->set_position (pos);
1382 }
1383
1384 void
1385 Editor::edit_cursor_forward ()
1386 {
1387         //nframes_t pos;
1388         nframes_t cnt;
1389         bool was_floating;
1390         float prefix;
1391
1392         if (get_prefix (prefix, was_floating)) {
1393                 cnt = 1;
1394         } else {
1395                 if (was_floating) {
1396                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1397                 } else {
1398                         cnt = (nframes_t) floor (prefix);
1399                 }
1400         }
1401
1402         // pos = edit_cursor->current_frame;
1403         // EDIT CURSOR edit_cursor->set_position (pos+cnt);
1404 }
1405
1406 void
1407 Editor::goto_frame ()
1408 {
1409         float prefix;
1410         bool was_floating;
1411         nframes_t frame;
1412
1413         if (get_prefix (prefix, was_floating)) {
1414                 return;
1415         }
1416
1417         if (was_floating) {
1418                 frame = (nframes_t) floor (prefix * session->frame_rate());
1419         } else {
1420                 frame = (nframes_t) floor (prefix);
1421         }
1422
1423         session->request_locate (frame);
1424 }
1425
1426 void
1427 Editor::scroll_backward (float pages)
1428 {
1429         nframes_t frame;
1430         nframes_t one_page = (nframes_t) rint (canvas_width * frames_per_unit);
1431         bool was_floating;
1432         float prefix;
1433         nframes_t cnt;
1434
1435         if (get_prefix (prefix, was_floating)) {
1436                 cnt = (nframes_t) floor (pages * one_page);
1437         } else {
1438                 if (was_floating) {
1439                         cnt = (nframes_t) floor (prefix * session->frame_rate());
1440                 } else {
1441                         cnt = (nframes_t) floor (prefix * one_page);
1442                 }
1443         }
1444
1445         if (leftmost_frame < cnt) {
1446                 frame = 0;
1447         } else {
1448                 frame = leftmost_frame - cnt;
1449         }
1450
1451         reset_x_origin (frame);
1452 }
1453
1454 void
1455 Editor::scroll_forward (float pages)
1456 {
1457         nframes_t frame;
1458         nframes_t one_page = (nframes_t) rint (canvas_width * frames_per_unit);
1459         bool was_floating;
1460         float prefix;
1461         nframes_t cnt;
1462
1463         if (get_prefix (prefix, was_floating)) {
1464                 cnt = (nframes_t) floor (pages * one_page);
1465         } else {
1466                 if (was_floating) {
1467                         cnt = (nframes_t) floor (prefix * session->frame_rate());
1468                 } else {
1469                         cnt = (nframes_t) floor (prefix * one_page);
1470                 }
1471         }
1472
1473         if (max_frames - cnt < leftmost_frame) {
1474                 frame = max_frames - cnt;
1475         } else {
1476                 frame = leftmost_frame + cnt;
1477         }
1478
1479         reset_x_origin (frame);
1480 }
1481
1482 void
1483 Editor::scroll_tracks_down ()
1484 {
1485         float prefix;
1486         bool was_floating;
1487         int cnt;
1488
1489         if (get_prefix (prefix, was_floating)) {
1490                 cnt = 1;
1491         } else {
1492                 cnt = (int) floor (prefix);
1493         }
1494
1495         double vert_value = vertical_adjustment.get_value() + (cnt *
1496                 vertical_adjustment.get_page_size());
1497         if (vert_value > vertical_adjustment.get_upper() - canvas_height) {
1498                 vert_value = vertical_adjustment.get_upper() - canvas_height;
1499         }
1500         vertical_adjustment.set_value (vert_value);
1501 }
1502
1503 void
1504 Editor::scroll_tracks_up ()
1505 {
1506         float prefix;
1507         bool was_floating;
1508         int cnt;
1509
1510         if (get_prefix (prefix, was_floating)) {
1511                 cnt = 1;
1512         } else {
1513                 cnt = (int) floor (prefix);
1514         }
1515
1516         vertical_adjustment.set_value (vertical_adjustment.get_value() - (cnt * vertical_adjustment.get_page_size()));
1517 }
1518
1519 void
1520 Editor::scroll_tracks_down_line ()
1521 {
1522
1523         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1524         double vert_value = adj->get_value() + 20;
1525
1526         if (vert_value>adj->get_upper() - canvas_height) {
1527                 vert_value = adj->get_upper() - canvas_height;
1528         }
1529         adj->set_value (vert_value);
1530 }
1531
1532 void
1533 Editor::scroll_tracks_up_line ()
1534 {
1535         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1536         adj->set_value (adj->get_value() - 20);
1537 }
1538
1539 /* ZOOM */
1540
1541 void
1542 Editor::temporal_zoom_step (bool coarser)
1543 {
1544         ENSURE_GUI_THREAD (bind (mem_fun (*this, &Editor::temporal_zoom_step), coarser));
1545
1546         double nfpu;
1547
1548         nfpu = frames_per_unit;
1549
1550         if (coarser) {
1551                 nfpu *= 1.61803399;
1552         } else {
1553                 nfpu = max(1.0,(nfpu/1.61803399));
1554         }
1555
1556         temporal_zoom (nfpu);
1557 }
1558
1559 void
1560 Editor::temporal_zoom (gdouble fpu)
1561 {
1562         if (!session) return;
1563
1564         nframes64_t current_page = current_page_frames();
1565         nframes64_t current_leftmost = leftmost_frame;
1566         nframes64_t current_rightmost;
1567         nframes64_t current_center;
1568         nframes64_t new_page_size;
1569         nframes64_t half_page_size;
1570         nframes64_t leftmost_after_zoom = 0;
1571         nframes64_t where;
1572         bool in_track_canvas;
1573         double nfpu;
1574         double l;
1575
1576         /* XXX this limit is also in ::set_frames_per_unit() */
1577
1578         if (frames_per_unit <= 2.0 && fpu <= frames_per_unit) {
1579                 return;
1580         }
1581
1582         nfpu = fpu;
1583
1584         new_page_size = (nframes_t) floor (canvas_width * nfpu);
1585         half_page_size = new_page_size / 2;
1586
1587         switch (zoom_focus) {
1588         case ZoomFocusLeft:
1589                 leftmost_after_zoom = current_leftmost;
1590                 break;
1591
1592         case ZoomFocusRight:
1593                 current_rightmost = leftmost_frame + current_page;
1594                 if (current_rightmost < new_page_size) {
1595                         leftmost_after_zoom = 0;
1596                 } else {
1597                         leftmost_after_zoom = current_rightmost - new_page_size;
1598                 }
1599                 break;
1600
1601         case ZoomFocusCenter:
1602                 current_center = current_leftmost + (current_page/2);
1603                 if (current_center < half_page_size) {
1604                         leftmost_after_zoom = 0;
1605                 } else {
1606                         leftmost_after_zoom = current_center - half_page_size;
1607                 }
1608                 break;
1609
1610         case ZoomFocusPlayhead:
1611                 /* try to keep the playhead in the same place */
1612
1613                 where = playhead_cursor->current_frame;
1614
1615                 l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1616
1617                 if (l < 0) {
1618                         leftmost_after_zoom = 0;
1619                 } else if (l > max_frames) {
1620                         leftmost_after_zoom = max_frames - new_page_size;
1621                 } else {
1622                         leftmost_after_zoom = (nframes64_t) l;
1623                 }
1624                 break;
1625
1626         case ZoomFocusMouse:
1627                 /* try to keep the mouse over the same point in the display */
1628
1629                 if (!mouse_frame (where, in_track_canvas)) {
1630                         /* use playhead instead */
1631                         where = playhead_cursor->current_frame;
1632
1633                         if (where < half_page_size) {
1634                                 leftmost_after_zoom = 0;
1635                         } else {
1636                                 leftmost_after_zoom = where - half_page_size;
1637                         }
1638
1639                 } else {
1640
1641                         l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1642
1643                         if (l < 0) {
1644                                 leftmost_after_zoom = 0;
1645                         } else if (l > max_frames) {
1646                                 leftmost_after_zoom = max_frames - new_page_size;
1647                         } else {
1648                                 leftmost_after_zoom = (nframes64_t) l;
1649                         }
1650                 }
1651
1652                 break;
1653
1654         case ZoomFocusEdit:
1655                 /* try to keep the edit point in the same place */
1656                 where = get_preferred_edit_position ();
1657
1658                 if (where > 0) {
1659
1660                         double l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1661
1662                         if (l < 0) {
1663                                 leftmost_after_zoom = 0;
1664                         } else if (l > max_frames) {
1665                                 leftmost_after_zoom = max_frames - new_page_size;
1666                         } else {
1667                                 leftmost_after_zoom = (nframes64_t) l;
1668                         }
1669
1670                 } else {
1671                         /* edit point not defined */
1672                         return;
1673                 }
1674                 break;
1675
1676         }
1677
1678         // leftmost_after_zoom = min (leftmost_after_zoom, session->current_end_frame());
1679
1680         reposition_and_zoom (leftmost_after_zoom, nfpu);
1681 }
1682
1683 void
1684 Editor::temporal_zoom_region ()
1685 {
1686
1687         nframes64_t start = max_frames;
1688         nframes64_t end = 0;
1689         RegionSelection rs;
1690
1691         get_regions_for_action (rs);
1692
1693         if (rs.empty()) {
1694                 return;
1695         }
1696
1697         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
1698                 if ((*i)->region()->position() < start) {
1699                         start = (*i)->region()->position();
1700                 }
1701                 if ((*i)->region()->last_frame() + 1 > end) {
1702                         end = (*i)->region()->last_frame() + 1;
1703                 }
1704         }
1705
1706         /* now comes an "interesting" hack ... make sure we leave a little space
1707            at each end of the editor so that the zoom doesn't fit the region
1708            precisely to the screen.
1709         */
1710
1711         GdkScreen* screen = gdk_screen_get_default ();
1712         gint pixwidth = gdk_screen_get_width (screen);
1713         gint mmwidth = gdk_screen_get_width_mm (screen);
1714         double pix_per_mm = (double) pixwidth/ (double) mmwidth;
1715         double one_centimeter_in_pixels = pix_per_mm * 10.0;
1716         nframes_t extra_samples = unit_to_frame (one_centimeter_in_pixels);
1717
1718         if (start > extra_samples) {
1719                 start -= extra_samples;
1720         } else {
1721                 start = 0;
1722         }
1723
1724         if (max_frames - extra_samples > end) {
1725                 end += extra_samples;
1726         } else {
1727                 end = max_frames;
1728         }
1729
1730         temporal_zoom_by_frame (start, end, "zoom to region");
1731         zoomed_to_region = true;
1732 }
1733
1734 void
1735 Editor::toggle_zoom_region ()
1736 {
1737         if (zoomed_to_region) {
1738                 swap_visual_state ();
1739         } else {
1740                 temporal_zoom_region ();
1741         }
1742 }
1743
1744 void
1745 Editor::temporal_zoom_selection ()
1746 {
1747         if (!selection) return;
1748
1749         if (selection->time.empty()) {
1750                 return;
1751         }
1752
1753         nframes_t start = selection->time[clicked_selection].start;
1754         nframes_t end = selection->time[clicked_selection].end;
1755
1756         temporal_zoom_by_frame (start, end, "zoom to selection");
1757 }
1758
1759 void
1760 Editor::temporal_zoom_session ()
1761 {
1762         ENSURE_GUI_THREAD (mem_fun (*this, &Editor::temporal_zoom_session));
1763
1764         if (session) {
1765                 temporal_zoom_by_frame (session->current_start_frame(), session->current_end_frame(), "zoom to session");
1766         }
1767 }
1768
1769 void
1770 Editor::temporal_zoom_by_frame (nframes_t start, nframes_t end, const string & op)
1771 {
1772         if (!session) return;
1773
1774         if ((start == 0 && end == 0) || end < start) {
1775                 return;
1776         }
1777
1778         nframes_t range = end - start;
1779
1780         double new_fpu = (double)range / (double)canvas_width;
1781 //      double p2 = 1.0;
1782
1783 //      while (p2 < new_fpu) {
1784 //              p2 *= 2.0;
1785 //      }
1786 //      new_fpu = p2;
1787
1788         nframes_t new_page = (nframes_t) floor (canvas_width * new_fpu);
1789         nframes_t middle = (nframes_t) floor( (double)start + ((double)range / 2.0f ));
1790         nframes_t new_leftmost = (nframes_t) floor( (double)middle - ((double)new_page/2.0f));
1791
1792         if (new_leftmost > middle) new_leftmost = 0;
1793
1794 //      begin_reversible_command (op);
1795 //      session->add_undo (bind (mem_fun(*this, &Editor::reposition_and_zoom), leftmost_frame, frames_per_unit));
1796 //      session->add_redo (bind (mem_fun(*this, &Editor::reposition_and_zoom), new_leftmost, new_fpu));
1797 //      commit_reversible_command ();
1798
1799         reposition_and_zoom (new_leftmost, new_fpu);
1800 }
1801
1802 void
1803 Editor::temporal_zoom_to_frame (bool coarser, nframes_t frame)
1804 {
1805         if (!session) return;
1806
1807         double range_before = frame - leftmost_frame;
1808         double new_fpu;
1809
1810         new_fpu = frames_per_unit;
1811
1812         if (coarser) {
1813                 new_fpu *= 1.61803399;
1814                 range_before *= 1.61803399;
1815         } else {
1816                 new_fpu = max(1.0,(new_fpu/1.61803399));
1817                 range_before /= 1.61803399;
1818         }
1819
1820         if (new_fpu == frames_per_unit) return;
1821
1822         nframes_t new_leftmost = frame - (nframes_t)range_before;
1823
1824         if (new_leftmost > frame) new_leftmost = 0;
1825
1826 //      begin_reversible_command (_("zoom to frame"));
1827 //      session->add_undo (bind (mem_fun(*this, &Editor::reposition_and_zoom), leftmost_frame, frames_per_unit));
1828 //      session->add_redo (bind (mem_fun(*this, &Editor::reposition_and_zoom), new_leftmost, new_fpu));
1829 //      commit_reversible_command ();
1830
1831         reposition_and_zoom (new_leftmost, new_fpu);
1832 }
1833
1834 void
1835 Editor::add_location_from_selection ()
1836 {
1837         string rangename;
1838
1839         if (selection->time.empty()) {
1840                 return;
1841         }
1842
1843         if (session == 0 || clicked_axisview == 0) {
1844                 return;
1845         }
1846
1847         nframes_t start = selection->time[clicked_selection].start;
1848         nframes_t end = selection->time[clicked_selection].end;
1849
1850         session->locations()->next_available_name(rangename,"selection");
1851         Location *location = new Location (start, end, rangename, Location::IsRangeMarker);
1852
1853         session->begin_reversible_command (_("add marker"));
1854         XMLNode &before = session->locations()->get_state();
1855         session->locations()->add (location, true);
1856         XMLNode &after = session->locations()->get_state();
1857         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1858         session->commit_reversible_command ();
1859 }
1860
1861 void
1862 Editor::add_location_mark (nframes64_t where)
1863 {
1864         string markername;
1865
1866         select_new_marker = true;
1867
1868         session->locations()->next_available_name(markername,"mark");
1869         Location *location = new Location (where, where, markername, Location::IsMark);
1870         session->begin_reversible_command (_("add marker"));
1871         XMLNode &before = session->locations()->get_state();
1872         session->locations()->add (location, true);
1873         XMLNode &after = session->locations()->get_state();
1874         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1875         session->commit_reversible_command ();
1876 }
1877
1878 void
1879 Editor::add_location_from_playhead_cursor ()
1880 {
1881         add_location_mark (session->audible_frame());
1882 }
1883
1884 void
1885 Editor::add_location_from_audio_region ()
1886 {
1887         RegionSelection rs;
1888
1889         get_regions_for_action (rs);
1890
1891         if (rs.empty()) {
1892                 return;
1893         }
1894
1895         RegionView* rv = *(rs.begin());
1896         boost::shared_ptr<Region> region = rv->region();
1897
1898         Location *location = new Location (region->position(), region->last_frame(), region->name(), Location::IsRangeMarker);
1899         session->begin_reversible_command (_("add marker"));
1900         XMLNode &before = session->locations()->get_state();
1901         session->locations()->add (location, true);
1902         XMLNode &after = session->locations()->get_state();
1903         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1904         session->commit_reversible_command ();
1905 }
1906
1907 void
1908 Editor::amplitude_zoom_step (bool in)
1909 {
1910         gdouble zoom = 1.0;
1911
1912         if (in) {
1913                 zoom *= 2.0;
1914         } else {
1915                 if (zoom > 2.0) {
1916                         zoom /= 2.0;
1917                 } else {
1918                         zoom = 1.0;
1919                 }
1920         }
1921
1922 #ifdef FIX_FOR_CANVAS
1923         /* XXX DO SOMETHING */
1924 #endif
1925 }
1926
1927
1928 /* DELETION */
1929
1930
1931 void
1932 Editor::delete_sample_forward ()
1933 {
1934 }
1935
1936 void
1937 Editor::delete_sample_backward ()
1938 {
1939 }
1940
1941 void
1942 Editor::delete_screen ()
1943 {
1944 }
1945
1946 /* SEARCH */
1947
1948 void
1949 Editor::search_backwards ()
1950 {
1951         /* what ? */
1952 }
1953
1954 void
1955 Editor::search_forwards ()
1956 {
1957         /* what ? */
1958 }
1959
1960 /* MARKS */
1961
1962 void
1963 Editor::jump_forward_to_mark ()
1964 {
1965         if (!session) {
1966                 return;
1967         }
1968
1969         Location *location = session->locations()->first_location_after (playhead_cursor->current_frame);
1970
1971         if (location) {
1972                 session->request_locate (location->start(), session->transport_rolling());
1973         } else {
1974                 session->request_locate (session->current_end_frame());
1975         }
1976 }
1977
1978 void
1979 Editor::jump_backward_to_mark ()
1980 {
1981         if (!session) {
1982                 return;
1983         }
1984
1985         Location *location = session->locations()->first_location_before (playhead_cursor->current_frame);
1986
1987         if (location) {
1988                 session->request_locate (location->start(), session->transport_rolling());
1989         } else {
1990                 session->goto_start ();
1991         }
1992 }
1993
1994 void
1995 Editor::set_mark ()
1996 {
1997         nframes_t pos;
1998         float prefix;
1999         bool was_floating;
2000         string markername;
2001
2002         if (get_prefix (prefix, was_floating)) {
2003                 pos = session->audible_frame ();
2004         } else {
2005                 if (was_floating) {
2006                         pos = (nframes_t) floor (prefix * session->frame_rate ());
2007                 } else {
2008                         pos = (nframes_t) floor (prefix);
2009                 }
2010         }
2011
2012         session->locations()->next_available_name(markername,"mark");
2013         session->locations()->add (new Location (pos, 0, markername, Location::IsMark), true);
2014 }
2015
2016 void
2017 Editor::clear_markers ()
2018 {
2019         if (session) {
2020                 session->begin_reversible_command (_("clear markers"));
2021                 XMLNode &before = session->locations()->get_state();
2022                 session->locations()->clear_markers ();
2023                 XMLNode &after = session->locations()->get_state();
2024                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2025                 session->commit_reversible_command ();
2026         }
2027 }
2028
2029 void
2030 Editor::clear_ranges ()
2031 {
2032         if (session) {
2033                 session->begin_reversible_command (_("clear ranges"));
2034                 XMLNode &before = session->locations()->get_state();
2035
2036                 Location * looploc = session->locations()->auto_loop_location();
2037                 Location * punchloc = session->locations()->auto_punch_location();
2038
2039                 session->locations()->clear_ranges ();
2040                 // re-add these
2041                 if (looploc) session->locations()->add (looploc);
2042                 if (punchloc) session->locations()->add (punchloc);
2043
2044                 XMLNode &after = session->locations()->get_state();
2045                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2046                 session->commit_reversible_command ();
2047         }
2048 }
2049
2050 void
2051 Editor::clear_locations ()
2052 {
2053         session->begin_reversible_command (_("clear locations"));
2054         XMLNode &before = session->locations()->get_state();
2055         session->locations()->clear ();
2056         XMLNode &after = session->locations()->get_state();
2057         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2058         session->commit_reversible_command ();
2059         session->locations()->clear ();
2060 }
2061
2062 void
2063 Editor::unhide_markers ()
2064 {
2065         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2066                 Location *l = (*i).first;
2067                 if (l->is_hidden() && l->is_mark()) {
2068                         l->set_hidden(false, this);
2069                 }
2070         }
2071 }
2072
2073 void
2074 Editor::unhide_ranges ()
2075 {
2076         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2077                 Location *l = (*i).first;
2078                 if (l->is_hidden() && l->is_range_marker()) {
2079                         l->set_hidden(false, this);
2080                 }
2081         }
2082 }
2083
2084 /* INSERT/REPLACE */
2085
2086 void
2087 Editor::insert_region_list_drag (boost::shared_ptr<Region> region, int x, int y)
2088 {
2089         double wx, wy;
2090         double cx, cy;
2091         TimeAxisView *tv;
2092         nframes_t where;
2093         RouteTimeAxisView *rtv = 0;
2094         boost::shared_ptr<Playlist> playlist;
2095
2096         track_canvas->window_to_world (x, y, wx, wy);
2097         wx += horizontal_adjustment.get_value();
2098         wy += vertical_adjustment.get_value();
2099
2100         GdkEvent event;
2101         event.type = GDK_BUTTON_RELEASE;
2102         event.button.x = wx;
2103         event.button.y = wy;
2104
2105         where = event_frame (&event, &cx, &cy);
2106
2107         if (where < leftmost_frame || where > leftmost_frame + current_page_frames()) {
2108                 /* clearly outside canvas area */
2109                 return;
2110         }
2111
2112         if ((tv = trackview_by_y_position (cy)) == 0) {
2113                 return;
2114         }
2115
2116         if ((rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2117                 return;
2118         }
2119
2120         if ((playlist = rtv->playlist()) == 0) {
2121                 return;
2122         }
2123
2124         snap_to (where);
2125
2126         begin_reversible_command (_("insert dragged region"));
2127         XMLNode &before = playlist->get_state();
2128         playlist->add_region (RegionFactory::create (region), where, 1.0);
2129         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2130         commit_reversible_command ();
2131 }
2132
2133 void
2134 Editor::insert_route_list_drag (boost::shared_ptr<Route> route, int x, int y) {
2135         double wx, wy;
2136         double cx, cy;
2137         TimeAxisView *tv;
2138         nframes_t where;
2139         RouteTimeAxisView *dest_rtv = 0;
2140         RouteTimeAxisView *source_rtv = 0;
2141
2142         track_canvas->window_to_world (x, y, wx, wy);
2143         wx += horizontal_adjustment.get_value();
2144         wy += vertical_adjustment.get_value();
2145
2146         GdkEvent event;
2147         event.type = GDK_BUTTON_RELEASE;
2148         event.button.x = wx;
2149         event.button.y = wy;
2150
2151         where = event_frame (&event, &cx, &cy);
2152
2153         if ((tv = trackview_by_y_position (cy)) == 0) {
2154                 return;
2155         }
2156
2157         if ((dest_rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2158                 return;
2159         }
2160
2161         /* use this drag source to add underlay to a track. But we really don't care
2162            about the Route, only the view of the route, so find it first */
2163         for(TrackViewList::iterator it = track_views.begin(); it != track_views.end(); ++it) {
2164                 if((source_rtv = dynamic_cast<RouteTimeAxisView*>(*it)) == 0) {
2165                         continue;
2166                 }
2167
2168                 if(source_rtv->route() == route && source_rtv != dest_rtv) {
2169                         dest_rtv->add_underlay(source_rtv->view());
2170                         break;
2171                 }
2172         }
2173 }
2174
2175 void
2176 Editor::insert_region_list_selection (float times)
2177 {
2178         RouteTimeAxisView *tv = 0;
2179         boost::shared_ptr<Playlist> playlist;
2180
2181         if (clicked_routeview != 0) {
2182                 tv = clicked_routeview;
2183         } else if (!selection->tracks.empty()) {
2184                 if ((tv = dynamic_cast<RouteTimeAxisView*>(selection->tracks.front())) == 0) {
2185                         return;
2186                 }
2187         } else if (entered_track != 0) {
2188                 if ((tv = dynamic_cast<RouteTimeAxisView*>(entered_track)) == 0) {
2189                         return;
2190                 }
2191         } else {
2192                 return;
2193         }
2194
2195         if ((playlist = tv->playlist()) == 0) {
2196                 return;
2197         }
2198
2199         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
2200
2201         if (selected->count_selected_rows() != 1) {
2202                 return;
2203         }
2204
2205         TreeView::Selection::ListHandle_Path rows = selected->get_selected_rows ();
2206
2207         /* only one row selected, so rows.begin() is it */
2208
2209         TreeIter iter;
2210
2211         if ((iter = region_list_model->get_iter (*rows.begin()))) {
2212
2213                 boost::shared_ptr<Region> region = (*iter)[region_list_columns.region];
2214
2215                 begin_reversible_command (_("insert region"));
2216                 XMLNode &before = playlist->get_state();
2217                 playlist->add_region ((RegionFactory::create (region)), get_preferred_edit_position(), times);
2218                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2219                 commit_reversible_command ();
2220         }
2221 }
2222
2223 /* BUILT-IN EFFECTS */
2224
2225 void
2226 Editor::reverse_selection ()
2227 {
2228
2229 }
2230
2231 /* GAIN ENVELOPE EDITING */
2232
2233 void
2234 Editor::edit_envelope ()
2235 {
2236 }
2237
2238 /* PLAYBACK */
2239
2240 void
2241 Editor::transition_to_rolling (bool fwd)
2242 {
2243         if (!session) {
2244                 return;
2245         }
2246
2247         switch (Config->get_slave_source()) {
2248         case None:
2249         case JACK:
2250                 break;
2251         default:
2252                 /* transport controlled by the master */
2253                 return;
2254         }
2255
2256         if (session->is_auditioning()) {
2257                 session->cancel_audition ();
2258                 return;
2259         }
2260
2261         session->request_transport_speed (fwd ? 1.0f : -1.0f);
2262 }
2263
2264 void
2265 Editor::toggle_playback (bool with_abort)
2266 {
2267         if (!session) {
2268                 return;
2269         }
2270
2271         switch (Config->get_slave_source()) {
2272         case None:
2273         case JACK:
2274                 break;
2275         default:
2276                 /* transport controlled by the master */
2277                 return;
2278         }
2279
2280         if (session->is_auditioning()) {
2281                 session->cancel_audition ();
2282                 return;
2283         }
2284
2285         if (session->transport_rolling()) {
2286                 session->request_stop (with_abort);
2287                 if (session->get_play_loop()) {
2288                         session->request_play_loop (false);
2289                 }
2290         } else {
2291                 session->request_transport_speed (1.0f);
2292         }
2293 }
2294
2295 void
2296 Editor::play_from_start ()
2297 {
2298         session->request_locate (session->current_start_frame(), true);
2299 }
2300
2301 void
2302 Editor::play_from_edit_point ()
2303 {
2304         session->request_locate (get_preferred_edit_position(), true);
2305 }
2306
2307 void
2308 Editor::play_from_edit_point_and_return ()
2309 {
2310         nframes64_t start_frame;
2311         nframes64_t return_frame;
2312
2313         start_frame = get_preferred_edit_position (true);
2314
2315         if (session->transport_rolling()) {
2316                 session->request_locate (start_frame, false);
2317                 return;
2318         }
2319
2320         /* don't reset the return frame if its already set */
2321
2322         if ((return_frame = session->requested_return_frame()) < 0) {
2323                 return_frame = session->audible_frame();
2324         }
2325
2326         if (start_frame >= 0) {
2327                 session->request_roll_at_and_return (start_frame, return_frame);
2328         }
2329 }
2330
2331 void
2332 Editor::play_selection ()
2333 {
2334         if (selection->time.empty()) {
2335                 return;
2336         }
2337
2338         session->request_play_range (true);
2339 }
2340
2341 void
2342 Editor::loop_selected_region ()
2343 {
2344         RegionSelection rs;
2345
2346         get_regions_for_action (rs);
2347
2348         if (!rs.empty()) {
2349                 RegionView *rv = *(rs.begin());
2350                 Location* tll;
2351
2352                 if ((tll = transport_loop_location()) != 0)  {
2353
2354                         tll->set (rv->region()->position(), rv->region()->last_frame());
2355
2356                         // enable looping, reposition and start rolling
2357
2358                         session->request_play_loop (true);
2359                         session->request_locate (tll->start(), false);
2360                         session->request_transport_speed (1.0f);
2361                 }
2362         }
2363 }
2364
2365 void
2366 Editor::play_location (Location& location)
2367 {
2368         if (location.start() <= location.end()) {
2369                 return;
2370         }
2371
2372         session->request_bounded_roll (location.start(), location.end());
2373 }
2374
2375 void
2376 Editor::loop_location (Location& location)
2377 {
2378         if (location.start() <= location.end()) {
2379                 return;
2380         }
2381
2382         Location* tll;
2383
2384         if ((tll = transport_loop_location()) != 0) {
2385                 tll->set (location.start(), location.end());
2386
2387                 // enable looping, reposition and start rolling
2388                 session->request_play_loop (true);
2389                 session->request_locate (tll->start(), true);
2390         }
2391 }
2392
2393 void
2394 Editor::raise_region ()
2395 {
2396         selection->foreach_region (&Region::raise);
2397 }
2398
2399 void
2400 Editor::raise_region_to_top ()
2401 {
2402         selection->foreach_region (&Region::raise_to_top);
2403 }
2404
2405 void
2406 Editor::lower_region ()
2407 {
2408         selection->foreach_region (&Region::lower);
2409 }
2410
2411 void
2412 Editor::lower_region_to_bottom ()
2413 {
2414         selection->foreach_region (&Region::lower_to_bottom);
2415 }
2416
2417 /** Show the region editor for the selected regions */
2418 void
2419 Editor::edit_region ()
2420 {
2421         selection->foreach_regionview (&RegionView::show_region_editor);
2422 }
2423
2424 void
2425 Editor::rename_region()
2426 {
2427         RegionSelection rs;
2428
2429         get_regions_for_action (rs);
2430
2431         if (rs.empty()) {
2432                 return;
2433         }
2434
2435         WindowTitle title (Glib::get_application_name());
2436         title += _("Rename Region");
2437
2438         ArdourDialog d (*this, title.get_string(), true, false);
2439         Entry entry;
2440         Label label (_("New name:"));
2441         HBox hbox;
2442
2443         hbox.set_spacing (6);
2444         hbox.pack_start (label, false, false);
2445         hbox.pack_start (entry, true, true);
2446
2447         d.get_vbox()->set_border_width (12);
2448         d.get_vbox()->pack_start (hbox, false, false);
2449
2450         d.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
2451         d.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
2452
2453         d.set_size_request (300, -1);
2454         d.set_position (Gtk::WIN_POS_MOUSE);
2455
2456         entry.set_text (rs.front()->region()->name());
2457         entry.select_region (0, -1);
2458
2459         entry.signal_activate().connect (bind (mem_fun (d, &Dialog::response), RESPONSE_OK));
2460
2461         d.show_all ();
2462
2463         entry.grab_focus();
2464
2465         int ret = d.run();
2466
2467         d.hide ();
2468
2469         if (ret == RESPONSE_OK) {
2470                 std::string str = entry.get_text();
2471                 strip_whitespace_edges (str);
2472                 if (!str.empty()) {
2473                         rs.front()->region()->set_name (str);
2474                         redisplay_regions ();
2475                 }
2476         }
2477 }
2478
2479 void
2480 Editor::audition_playlist_region_via_route (boost::shared_ptr<Region> region, Route& route)
2481 {
2482         if (session->is_auditioning()) {
2483                 session->cancel_audition ();
2484         }
2485
2486         // note: some potential for creativity here, because region doesn't
2487         // have to belong to the playlist that Route is handling
2488
2489         // bool was_soloed = route.soloed();
2490
2491         route.set_solo (true, this);
2492
2493         session->request_bounded_roll (region->position(), region->position() + region->length());
2494
2495         /* XXX how to unset the solo state ? */
2496 }
2497
2498 /** Start an audition of the first selected region */
2499 void
2500 Editor::play_edit_range ()
2501 {
2502         nframes64_t start, end;
2503
2504         if (get_edit_op_range (start, end)) {
2505                 session->request_bounded_roll (start, end);
2506         }
2507 }
2508
2509 void
2510 Editor::play_selected_region ()
2511 {
2512         nframes64_t start = max_frames;
2513         nframes64_t end = 0;
2514         RegionSelection rs;
2515
2516         get_regions_for_action (rs);
2517
2518         if (rs.empty()) {
2519                 return;
2520         }
2521
2522         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2523                 if ((*i)->region()->position() < start) {
2524                         start = (*i)->region()->position();
2525                 }
2526                 if ((*i)->region()->last_frame() + 1 > end) {
2527                         end = (*i)->region()->last_frame() + 1;
2528                 }
2529         }
2530
2531         session->request_stop ();
2532         session->request_bounded_roll (start, end);
2533 }
2534
2535 void
2536 Editor::audition_playlist_region_standalone (boost::shared_ptr<Region> region)
2537 {
2538         session->audition_region (region);
2539 }
2540
2541 void
2542 Editor::build_interthread_progress_window ()
2543 {
2544         interthread_progress_window = new ArdourDialog (X_("interthread progress"), true);
2545
2546         interthread_progress_bar.set_orientation (Gtk::PROGRESS_LEFT_TO_RIGHT);
2547
2548         interthread_progress_window->get_vbox()->pack_start (interthread_progress_label, false, false);
2549         interthread_progress_window->get_vbox()->pack_start (interthread_progress_bar,false, false);
2550
2551         // GTK2FIX: this button needs a modifiable label
2552
2553         Button* b = interthread_progress_window->add_button (Stock::CANCEL, RESPONSE_CANCEL);
2554         b->signal_clicked().connect (mem_fun(*this, &Editor::interthread_cancel_clicked));
2555
2556         interthread_cancel_button.add (interthread_cancel_label);
2557
2558         interthread_progress_window->set_default_size (200, 100);
2559 }
2560
2561 void
2562 Editor::interthread_cancel_clicked ()
2563 {
2564         if (current_interthread_info) {
2565                 current_interthread_info->cancel = true;
2566         }
2567 }
2568
2569 void
2570 Editor::region_from_selection ()
2571 {
2572         if (clicked_axisview == 0) {
2573                 return;
2574         }
2575
2576         if (selection->time.empty()) {
2577                 return;
2578         }
2579
2580         nframes_t start = selection->time[clicked_selection].start;
2581         nframes_t end = selection->time[clicked_selection].end;
2582
2583         nframes_t selection_cnt = end - start + 1;
2584
2585         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2586                 boost::shared_ptr<AudioRegion> current;
2587                 boost::shared_ptr<Region> current_r;
2588                 boost::shared_ptr<Playlist> pl;
2589
2590                 nframes_t internal_start;
2591                 string new_name;
2592
2593                 if ((pl = (*i)->playlist()) == 0) {
2594                         continue;
2595                 }
2596
2597                 if ((current_r = pl->top_region_at (start)) == 0) {
2598                         continue;
2599                 }
2600
2601                 current = boost::dynamic_pointer_cast<AudioRegion> (current_r);
2602                 assert(current); // FIXME
2603                 if (current != 0) {
2604                         internal_start = start - current->position();
2605                         session->region_name (new_name, current->name(), true);
2606                         boost::shared_ptr<Region> region (RegionFactory::create (current, internal_start, selection_cnt, new_name));
2607                 }
2608         }
2609 }
2610
2611 void
2612 Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_regions)
2613 {
2614         if (selection->time.empty() || selection->tracks.empty()) {
2615                 return;
2616         }
2617
2618         nframes_t start = selection->time[clicked_selection].start;
2619         nframes_t end = selection->time[clicked_selection].end;
2620
2621         sort_track_selection ();
2622
2623         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2624
2625                 boost::shared_ptr<AudioRegion> current;
2626                 boost::shared_ptr<Region> current_r;
2627                 boost::shared_ptr<Playlist> playlist;
2628                 nframes_t internal_start;
2629                 string new_name;
2630
2631                 if ((playlist = (*i)->playlist()) == 0) {
2632                         continue;
2633                 }
2634
2635                 if ((current_r = playlist->top_region_at(start)) == 0) {
2636                         continue;
2637                 }
2638
2639                 if ((current = boost::dynamic_pointer_cast<AudioRegion>(current_r)) == 0) {
2640                         continue;
2641                 }
2642
2643                 internal_start = start - current->position();
2644                 session->region_name (new_name, current->name(), true);
2645
2646                 new_regions.push_back (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (current, internal_start, end - start + 1, new_name)));
2647         }
2648 }
2649
2650 void
2651 Editor::split_multichannel_region ()
2652 {
2653         RegionSelection rs;
2654
2655         get_regions_for_action (rs);
2656
2657         if (rs.empty()) {
2658                 return;
2659         }
2660
2661         vector<boost::shared_ptr<AudioRegion> > v;
2662
2663         for (list<RegionView*>::iterator x = rs.begin(); x != rs.end(); ++x) {
2664
2665                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*x);
2666
2667                 if (!arv || arv->audio_region()->n_channels() < 2) {
2668                         continue;
2669                 }
2670
2671                 (arv)->audio_region()->separate_by_channel (*session, v);
2672         }
2673 }
2674
2675 void
2676 Editor::new_region_from_selection ()
2677 {
2678         region_from_selection ();
2679         cancel_selection ();
2680 }
2681
2682 static void
2683 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
2684 {
2685         switch (rv->region()->coverage (ar->start, ar->end - 1)) {
2686         case OverlapNone:
2687                 break;
2688         default:
2689                 rs->push_back (rv);
2690         }
2691 }
2692
2693 void
2694 Editor::separate_regions_between (const TimeSelection& ts)
2695 {
2696         bool in_command = false;
2697         boost::shared_ptr<Playlist> playlist;
2698         RegionSelection new_selection;
2699         TrackSelection tmptracks;
2700
2701         if (selection->tracks.empty()) {
2702
2703                 /* use tracks with selected regions */
2704
2705                 RegionSelection rs;
2706
2707                 get_regions_for_action (rs);
2708
2709                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2710                         TimeAxisView* tv = &(*i)->get_time_axis_view();
2711
2712                         if (find (tmptracks.begin(), tmptracks.end(), tv) == tmptracks.end()) {
2713                                 tmptracks.push_back (tv);
2714                         }
2715                 }
2716
2717                 if (tmptracks.empty()) {
2718                         /* no regions selected: do nothing */
2719                         return;
2720                 }
2721
2722         } else {
2723
2724                 tmptracks = selection->tracks;
2725
2726         }
2727
2728         sort_track_selection (&tmptracks);
2729
2730
2731
2732
2733         for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
2734
2735                 RouteTimeAxisView* rtv;
2736
2737                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2738
2739                         if (rtv->is_track()) {
2740
2741                                 /* no edits to destructive tracks */
2742
2743                                 if (rtv->track()->diskstream()->destructive()) {
2744                                         continue;
2745                                 }
2746
2747                                 if ((playlist = rtv->playlist()) != 0) {
2748
2749                                         XMLNode *before;
2750                                         bool got_some;
2751
2752                                         before = &(playlist->get_state());
2753                                         got_some = false;
2754
2755                                         /* XXX need to consider musical time selections here at some point */
2756
2757                                         double speed = rtv->get_diskstream()->speed();
2758
2759
2760                                         for (list<AudioRange>::const_iterator t = ts.begin(); t != ts.end(); ++t) {
2761
2762                                                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
2763                                                 latest_regionviews.clear ();
2764
2765                                                 playlist->partition ((nframes_t)((*t).start * speed), (nframes_t)((*t).end * speed), true);
2766
2767                                                 c.disconnect ();
2768
2769                                                 if (!latest_regionviews.empty()) {
2770
2771                                                         got_some = true;
2772
2773                                                         rtv->view()->foreach_regionview (bind (sigc::ptr_fun (add_if_covered), &(*t), &new_selection));
2774
2775                                                         if (!in_command) {
2776                                                                 begin_reversible_command (_("separate"));
2777                                                                 in_command = true;
2778                                                         }
2779
2780                                                         session->add_command(new MementoCommand<Playlist>(*playlist, before, &playlist->get_state()));
2781
2782                                                 }
2783                                         }
2784
2785                                         if (!got_some) {
2786                                                 delete before;
2787                                         }
2788                                 }
2789                         }
2790                 }
2791         }
2792
2793         if (in_command) {
2794                 selection->set (new_selection);
2795                 set_mouse_mode (MouseObject);
2796
2797                 commit_reversible_command ();
2798         }
2799 }
2800
2801 void
2802 Editor::separate_region_from_selection ()
2803 {
2804         /* preferentially use *all* ranges in the time selection if we're in range mode
2805            to allow discontiguous operation, since get_edit_op_range() currently
2806            returns a single range.
2807         */
2808
2809         if (mouse_mode == MouseRange && !selection->time.empty()) {
2810
2811                 separate_regions_between (selection->time);
2812
2813         } else {
2814
2815                 nframes64_t start;
2816                 nframes64_t end;
2817
2818                 if (get_edit_op_range (start, end)) {
2819
2820                         AudioRange ar (start, end, 1);
2821                         TimeSelection ts;
2822                         ts.push_back (ar);
2823
2824                         separate_regions_between (ts);
2825                 }
2826         }
2827 }
2828
2829 void
2830 Editor::separate_region_from_punch ()
2831 {
2832         Location* loc  = session->locations()->auto_punch_location();
2833         if (loc) {
2834                 separate_regions_using_location (*loc);
2835         }
2836 }
2837
2838 void
2839 Editor::separate_region_from_loop ()
2840 {
2841         Location* loc  = session->locations()->auto_loop_location();
2842         if (loc) {
2843                 separate_regions_using_location (*loc);
2844         }
2845 }
2846
2847 void
2848 Editor::separate_regions_using_location (Location& loc)
2849 {
2850         if (loc.is_mark()) {
2851                 return;
2852         }
2853
2854         AudioRange ar (loc.start(), loc.end(), 1);
2855         TimeSelection ts;
2856
2857         ts.push_back (ar);
2858
2859         separate_regions_between (ts);
2860 }
2861
2862 void
2863 Editor::crop_region_to_selection ()
2864 {
2865         if (!selection->time.empty()) {
2866
2867                 crop_region_to (selection->time.start(), selection->time.end_frame());
2868
2869         } else {
2870
2871                 nframes64_t start;
2872                 nframes64_t end;
2873
2874                 if (get_edit_op_range (start, end)) {
2875                         crop_region_to (start, end);
2876                 }
2877         }
2878
2879 }
2880
2881 void
2882 Editor::crop_region_to (nframes_t start, nframes_t end)
2883 {
2884         vector<boost::shared_ptr<Playlist> > playlists;
2885         boost::shared_ptr<Playlist> playlist;
2886         TrackSelection* ts;
2887
2888         if (selection->tracks.empty()) {
2889                 ts = &track_views;
2890         } else {
2891                 sort_track_selection ();
2892                 ts = &selection->tracks;
2893         }
2894
2895         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
2896
2897                 RouteTimeAxisView* rtv;
2898
2899                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2900
2901                         boost::shared_ptr<Track> t = rtv->track();
2902
2903                         if (t != 0 && ! t->diskstream()->destructive()) {
2904
2905                                 if ((playlist = rtv->playlist()) != 0) {
2906                                         playlists.push_back (playlist);
2907                                 }
2908                         }
2909                 }
2910         }
2911
2912         if (playlists.empty()) {
2913                 return;
2914         }
2915
2916         nframes_t the_start;
2917         nframes_t the_end;
2918         nframes_t cnt;
2919
2920         begin_reversible_command (_("trim to selection"));
2921
2922         for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
2923
2924                 boost::shared_ptr<Region> region;
2925
2926                 the_start = start;
2927
2928                 if ((region = (*i)->top_region_at(the_start)) == 0) {
2929                         continue;
2930                 }
2931
2932                 /* now adjust lengths to that we do the right thing
2933                    if the selection extends beyond the region
2934                 */
2935
2936                 the_start = max (the_start, region->position());
2937                 if (max_frames - the_start < region->length()) {
2938                         the_end = the_start + region->length() - 1;
2939                 } else {
2940                         the_end = max_frames;
2941                 }
2942                 the_end = min (end, the_end);
2943                 cnt = the_end - the_start + 1;
2944
2945                 XMLNode &before = (*i)->get_state();
2946                 region->trim_to (the_start, cnt, this);
2947                 XMLNode &after = (*i)->get_state();
2948                 session->add_command (new MementoCommand<Playlist>(*(*i), &before, &after));
2949         }
2950
2951         commit_reversible_command ();
2952 }
2953
2954 void
2955 Editor::region_fill_track ()
2956 {
2957         nframes_t end;
2958         RegionSelection rs;
2959
2960         get_regions_for_action (rs);
2961
2962         if (!session || rs.empty()) {
2963                 return;
2964         }
2965
2966         end = session->current_end_frame ();
2967
2968         begin_reversible_command (_("region fill"));
2969
2970         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2971
2972                 boost::shared_ptr<Region> region ((*i)->region());
2973
2974                 // FIXME
2975                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
2976                 assert(ar);
2977
2978                 boost::shared_ptr<Playlist> pl = region->playlist();
2979
2980                 if (end <= region->last_frame()) {
2981                         return;
2982                 }
2983
2984                 double times = (double) (end - region->last_frame()) / (double) region->length();
2985
2986                 if (times == 0) {
2987                         return;
2988                 }
2989
2990                 XMLNode &before = pl->get_state();
2991                 pl->add_region (RegionFactory::create (ar), ar->last_frame(), times);
2992                 session->add_command (new MementoCommand<Playlist>(*pl, &before, &pl->get_state()));
2993         }
2994
2995         commit_reversible_command ();
2996 }
2997
2998 void
2999 Editor::region_fill_selection ()
3000 {
3001         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3002                 return;
3003         }
3004
3005         if (selection->time.empty()) {
3006                 return;
3007         }
3008
3009
3010         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
3011
3012         if (selected->count_selected_rows() != 1) {
3013                 return;
3014         }
3015
3016         TreeModel::iterator i = region_list_display.get_selection()->get_selected();
3017         boost::shared_ptr<Region> region = (*i)[region_list_columns.region];
3018
3019         nframes_t start = selection->time[clicked_selection].start;
3020         nframes_t end = selection->time[clicked_selection].end;
3021
3022         boost::shared_ptr<Playlist> playlist;
3023
3024         if (selection->tracks.empty()) {
3025                 return;
3026         }
3027
3028         nframes_t selection_length = end - start;
3029         float times = (float)selection_length / region->length();
3030
3031         begin_reversible_command (_("fill selection"));
3032
3033         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
3034
3035                 if ((playlist = (*i)->playlist()) == 0) {
3036                         continue;
3037                 }
3038
3039                 XMLNode &before = playlist->get_state();
3040                 playlist->add_region (RegionFactory::create (region), start, times);
3041                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
3042         }
3043
3044         commit_reversible_command ();
3045 }
3046
3047 void
3048 Editor::set_region_sync_from_edit_point ()
3049 {
3050         nframes64_t where = get_preferred_edit_position ();
3051         RegionSelection rs;
3052         get_regions_for_action (rs);
3053         set_sync_point (where, rs);
3054 }
3055
3056 void
3057 Editor::set_sync_point (nframes64_t where, const RegionSelection& rs)
3058 {
3059         bool in_command = false;
3060
3061         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ++r) {
3062
3063                 if (!(*r)->region()->covers (where)) {
3064                         continue;
3065                 }
3066
3067                 boost::shared_ptr<Region> region ((*r)->region());
3068
3069                 if (!in_command) {
3070                         begin_reversible_command (_("set sync point"));
3071                         in_command = true;
3072                 }
3073
3074                 XMLNode &before = region->playlist()->get_state();
3075                 region->set_sync_position (get_preferred_edit_position());
3076                 XMLNode &after = region->playlist()->get_state();
3077                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3078         }
3079
3080         if (in_command) {
3081                 commit_reversible_command ();
3082         }
3083 }
3084
3085 /** Remove the sync positions of the selection */
3086 void
3087 Editor::remove_region_sync ()
3088 {
3089         begin_reversible_command (_("remove sync"));
3090
3091         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
3092                 boost::shared_ptr<Region> r = (*i)->region();
3093                 XMLNode &before = r->playlist()->get_state();
3094                 r->clear_sync_position ();
3095                 XMLNode &after = r->playlist()->get_state();
3096                 session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
3097         }
3098
3099         commit_reversible_command ();
3100 }
3101
3102 void
3103 Editor::naturalize ()
3104 {
3105         RegionSelection rs;
3106
3107         get_regions_for_action (rs);
3108
3109         if (rs.empty()) {
3110                 return;
3111         }
3112
3113         begin_reversible_command (_("naturalize"));
3114         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3115                 XMLNode &before = (*i)->region()->get_state();
3116                 (*i)->region()->move_to_natural_position (this);
3117                 XMLNode &after = (*i)->region()->get_state();
3118                 session->add_command (new MementoCommand<Region>(*((*i)->region().get()), &before, &after));
3119         }
3120         commit_reversible_command ();
3121 }
3122
3123 void
3124 Editor::align (RegionPoint what)
3125 {
3126         RegionSelection rs;
3127
3128         get_regions_for_action (rs);
3129         nframes64_t where = get_preferred_edit_position();
3130
3131         if (!rs.empty()) {
3132                 align_selection (what, where, rs);
3133         } else {
3134
3135                 RegionSelection rs;
3136                 get_regions_at (rs, where, selection->tracks);
3137                 align_selection (what, where, rs);
3138         }
3139 }
3140
3141 void
3142 Editor::align_relative (RegionPoint what)
3143 {
3144         nframes64_t where = get_preferred_edit_position();
3145         RegionSelection rs;
3146
3147         get_regions_for_action (rs);
3148
3149         if (!rs.empty()) {
3150                 align_selection_relative (what, where, rs);
3151         }
3152 }
3153
3154 struct RegionSortByTime {
3155     bool operator() (const RegionView* a, const RegionView* b) {
3156             return a->region()->position() < b->region()->position();
3157     }
3158 };
3159
3160 void
3161 Editor::align_selection_relative (RegionPoint point, nframes_t position, const RegionSelection& rs)
3162 {
3163         if (rs.empty()) {
3164                 return;
3165         }
3166
3167         nframes_t distance = 0;
3168         nframes_t pos = 0;
3169         int dir = 0;
3170
3171         list<RegionView*> sorted;
3172         rs.by_position (sorted);
3173         boost::shared_ptr<Region> r ((*sorted.begin())->region());
3174
3175         switch (point) {
3176         case Start:
3177                 pos = position;
3178                 if (position > r->position()) {
3179                         distance = position - r->position();
3180                         dir = 1;
3181                 } else {
3182                         distance = r->position() - position;
3183                         dir = -1;
3184                 }
3185                 break;
3186
3187         case End:
3188                 if (position > r->last_frame()) {
3189                         distance = position - r->last_frame();
3190                         pos = r->position() + distance;
3191                         dir = 1;
3192                 } else {
3193                         distance = r->last_frame() - position;
3194                         pos = r->position() - distance;
3195                         dir = -1;
3196                 }
3197                 break;
3198
3199         case SyncPoint:
3200                 pos = r->adjust_to_sync (position);
3201                 if (pos > r->position()) {
3202                         distance = pos - r->position();
3203                         dir = 1;
3204                 } else {
3205                         distance = r->position() - pos;
3206                         dir = -1;
3207                 }
3208                 break;
3209         }
3210
3211         if (pos == r->position()) {
3212                 return;
3213         }
3214
3215         begin_reversible_command (_("align selection (relative)"));
3216
3217         /* move first one specially */
3218
3219         XMLNode &before = r->playlist()->get_state();
3220         r->set_position (pos, this);
3221         XMLNode &after = r->playlist()->get_state();
3222         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
3223
3224         /* move rest by the same amount */
3225
3226         sorted.pop_front();
3227
3228         for (list<RegionView*>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
3229
3230                 boost::shared_ptr<Region> region ((*i)->region());
3231
3232                 XMLNode &before = region->playlist()->get_state();
3233
3234                 if (dir > 0) {
3235                         region->set_position (region->position() + distance, this);
3236                 } else {
3237                         region->set_position (region->position() - distance, this);
3238                 }
3239
3240                 XMLNode &after = region->playlist()->get_state();
3241                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3242
3243         }
3244
3245         commit_reversible_command ();
3246 }
3247
3248 void
3249 Editor::align_selection (RegionPoint point, nframes_t position, const RegionSelection& rs)
3250 {
3251         if (rs.empty()) {
3252                 return;
3253         }
3254
3255         begin_reversible_command (_("align selection"));
3256
3257         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
3258                 align_region_internal ((*i)->region(), point, position);
3259         }
3260
3261         commit_reversible_command ();
3262 }
3263
3264 void
3265 Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, nframes_t position)
3266 {
3267         begin_reversible_command (_("align region"));
3268         align_region_internal (region, point, position);
3269         commit_reversible_command ();
3270 }
3271
3272 void
3273 Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, nframes_t position)
3274 {
3275         XMLNode &before = region->playlist()->get_state();
3276
3277         switch (point) {
3278         case SyncPoint:
3279                 region->set_position (region->adjust_to_sync (position), this);
3280                 break;
3281
3282         case End:
3283                 if (position > region->length()) {
3284                         region->set_position (position - region->length(), this);
3285                 }
3286                 break;
3287
3288         case Start:
3289                 region->set_position (position, this);
3290                 break;
3291         }
3292
3293         XMLNode &after = region->playlist()->get_state();
3294         session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3295 }
3296
3297 /** Trim the end of the selected regions to the position of the edit cursor */
3298 void
3299 Editor::trim_region_to_loop ()
3300 {
3301         Location* loc = session->locations()->auto_loop_location();
3302         if (!loc) {
3303                 return;
3304         }
3305         trim_region_to_location (*loc, _("trim to loop"));
3306 }
3307
3308 void
3309 Editor::trim_region_to_punch ()
3310 {
3311         Location* loc = session->locations()->auto_punch_location();
3312         if (!loc) {
3313                 return;
3314         }
3315         trim_region_to_location (*loc, _("trim to punch"));
3316 }
3317 void
3318 Editor::trim_region_to_location (const Location& loc, const char* str)
3319 {
3320         RegionSelection rs;
3321
3322         get_regions_for_action (rs);
3323
3324         begin_reversible_command (str);
3325
3326         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3327                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3328
3329                 if (!arv) {
3330                         continue;
3331                 }
3332
3333                 /* require region to span proposed trim */
3334
3335                 switch (arv->region()->coverage (loc.start(), loc.end())) {
3336                 case OverlapInternal:
3337                         break;
3338                 default:
3339                         continue;
3340                 }
3341
3342                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3343
3344                 if (!atav) {
3345                         return;
3346                 }
3347
3348                 float speed = 1.0;
3349                 nframes_t start;
3350                 nframes_t end;
3351
3352                 if (atav->get_diskstream() != 0) {
3353                         speed = atav->get_diskstream()->speed();
3354                 }
3355
3356                 start = session_frame_to_track_frame (loc.start(), speed);
3357                 end = session_frame_to_track_frame (loc.end(), speed);
3358
3359                 XMLNode &before = arv->region()->playlist()->get_state();
3360                 arv->region()->trim_to (start, (end - start), this);
3361                 XMLNode &after = arv->region()->playlist()->get_state();
3362                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3363         }
3364
3365         commit_reversible_command ();
3366 }
3367
3368 void
3369 Editor::trim_region_to_edit_point ()
3370 {
3371         RegionSelection rs;
3372
3373         get_regions_for_action (rs);
3374
3375         nframes64_t where = get_preferred_edit_position();
3376
3377         begin_reversible_command (_("trim region start to edit point"));
3378
3379         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3380                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3381
3382                 if (!arv) {
3383                         continue;
3384                 }
3385
3386                 /* require region to cover trim */
3387
3388                 if (!arv->region()->covers (where)) {
3389                         continue;
3390                 }
3391
3392                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3393
3394                 if (!atav) {
3395                         return;
3396                 }
3397
3398                 float speed = 1.0;
3399
3400                 if (atav->get_diskstream() != 0) {
3401                         speed = atav->get_diskstream()->speed();
3402                 }
3403
3404                 XMLNode &before = arv->region()->playlist()->get_state();
3405                 arv->region()->trim_end( session_frame_to_track_frame(where, speed), this);
3406                 XMLNode &after = arv->region()->playlist()->get_state();
3407                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3408         }
3409
3410         commit_reversible_command ();
3411 }
3412
3413 void
3414 Editor::trim_region_from_edit_point ()
3415 {
3416         RegionSelection rs;
3417
3418         get_regions_for_action (rs);
3419
3420         nframes64_t where = get_preferred_edit_position();
3421
3422         begin_reversible_command (_("trim region end to edit point"));
3423
3424         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3425                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3426
3427                 if (!arv) {
3428                         continue;
3429                 }
3430
3431                 /* require region to cover trim */
3432
3433                 if (!arv->region()->covers (where)) {
3434                         continue;
3435                 }
3436
3437                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3438
3439                 if (!atav) {
3440                         return;
3441                 }
3442
3443                 float speed = 1.0;
3444
3445                 if (atav->get_diskstream() != 0) {
3446                         speed = atav->get_diskstream()->speed();
3447                 }
3448
3449                 XMLNode &before = arv->region()->playlist()->get_state();
3450                 arv->region()->trim_front ( session_frame_to_track_frame(where, speed), this);
3451                 XMLNode &after = arv->region()->playlist()->get_state();
3452                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3453         }
3454
3455         commit_reversible_command ();
3456 }
3457
3458 void
3459 Editor::unfreeze_route ()
3460 {
3461         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3462                 return;
3463         }
3464
3465         clicked_routeview->audio_track()->unfreeze ();
3466 }
3467
3468 void*
3469 Editor::_freeze_thread (void* arg)
3470 {
3471         PBD::ThreadCreated (pthread_self(), X_("Freeze"));
3472         return static_cast<Editor*>(arg)->freeze_thread ();
3473 }
3474
3475 void*
3476 Editor::freeze_thread ()
3477 {
3478         clicked_routeview->audio_track()->freeze (*current_interthread_info);
3479         return 0;
3480 }
3481
3482 gint
3483 Editor::freeze_progress_timeout (void *arg)
3484 {
3485         interthread_progress_bar.set_fraction (current_interthread_info->progress/100);
3486         return !(current_interthread_info->done || current_interthread_info->cancel);
3487 }
3488
3489 void
3490 Editor::freeze_route ()
3491 {
3492         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3493                 return;
3494         }
3495
3496         InterThreadInfo itt;
3497
3498         if (interthread_progress_window == 0) {
3499                 build_interthread_progress_window ();
3500         }
3501
3502         WindowTitle title(Glib::get_application_name());
3503         title += _("Freeze");
3504         interthread_progress_window->set_title (title.get_string());
3505         interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
3506         interthread_progress_window->show_all ();
3507         interthread_progress_bar.set_fraction (0.0f);
3508         interthread_progress_label.set_text ("");
3509         interthread_cancel_label.set_text (_("Cancel Freeze"));
3510         current_interthread_info = &itt;
3511
3512         interthread_progress_connection =
3513           Glib::signal_timeout().connect (bind (mem_fun(*this, &Editor::freeze_progress_timeout), (gpointer) 0), 100);
3514
3515         itt.done = false;
3516         itt.cancel = false;
3517         itt.progress = 0.0f;
3518
3519         pthread_attr_t attr;
3520         pthread_attr_init(&attr);
3521         pthread_attr_setstacksize(&attr, 500000);
3522
3523         pthread_create (&itt.thread, &attr, _freeze_thread, this);
3524
3525         pthread_attr_destroy(&attr);
3526
3527         track_canvas->get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
3528
3529         while (!itt.done && !itt.cancel) {
3530                 gtk_main_iteration ();
3531         }
3532
3533         interthread_progress_connection.disconnect ();
3534         interthread_progress_window->hide_all ();
3535         current_interthread_info = 0;
3536         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
3537 }
3538
3539 void
3540 Editor::bounce_range_selection ()
3541 {
3542         if (selection->time.empty()) {
3543                 return;
3544         }
3545
3546         TrackSelection views = selection->tracks;
3547
3548         nframes_t start = selection->time[clicked_selection].start;
3549         nframes_t end = selection->time[clicked_selection].end;
3550         nframes_t cnt = end - start + 1;
3551
3552         begin_reversible_command (_("bounce range"));
3553
3554         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3555
3556                 RouteTimeAxisView* rtv;
3557
3558                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*i)) == 0) {
3559                         continue;
3560                 }
3561
3562                 boost::shared_ptr<Playlist> playlist;
3563
3564                 if ((playlist = rtv->playlist()) == 0) {
3565                         return;
3566                 }
3567
3568                 InterThreadInfo itt;
3569
3570                 itt.done = false;
3571                 itt.cancel = false;
3572                 itt.progress = false;
3573
3574                 XMLNode &before = playlist->get_state();
3575                 rtv->track()->bounce_range (start, cnt, itt);
3576                 XMLNode &after = playlist->get_state();
3577                 session->add_command (new MementoCommand<Playlist> (*playlist, &before, &after));
3578         }
3579
3580         commit_reversible_command ();
3581 }
3582
3583 /** Cut selected regions, automation points or a time range */
3584 void
3585 Editor::cut ()
3586 {
3587         cut_copy (Cut);
3588 }
3589
3590 /** Copy selected regions, automation points or a time range */
3591 void
3592 Editor::copy ()
3593 {
3594         cut_copy (Copy);
3595 }
3596
3597
3598 /** @return true if a Cut, Copy or Clear is possible */
3599 bool
3600 Editor::can_cut_copy () const
3601 {
3602         switch (current_mouse_mode()) {
3603
3604         case MouseObject:
3605                 if (!selection->regions.empty() || !selection->points.empty()) {
3606                         return true;
3607                 }
3608                 break;
3609
3610         case MouseRange:
3611                 if (!selection->time.empty()) {
3612                         return true;
3613                 }
3614                 break;
3615
3616         default:
3617                 break;
3618         }
3619
3620         return false;
3621 }
3622
3623
3624 /** Cut, copy or clear selected regions, automation points or a time range.
3625  * @param op Operation (Cut, Copy or Clear)
3626  */
3627 void
3628 Editor::cut_copy (CutCopyOp op)
3629 {
3630         /* only cancel selection if cut/copy is successful.*/
3631
3632         string opname;
3633
3634         switch (op) {
3635         case Cut:
3636                 opname = _("cut");
3637                 break;
3638         case Copy:
3639                 opname = _("copy");
3640                 break;
3641         case Clear:
3642                 opname = _("clear");
3643                 break;
3644         }
3645
3646         cut_buffer->clear ();
3647
3648         if (entered_marker) {
3649
3650                 /* cut/delete op while pointing at a marker */
3651
3652                 bool ignored;
3653                 Location* loc = find_location_from_marker (entered_marker, ignored);
3654
3655                 if (session && loc) {
3656                         Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::really_remove_marker), loc));
3657                 }
3658
3659                 return;
3660         }
3661
3662         RegionSelection rs;
3663
3664         /* we only want to cut regions if some are selected */
3665
3666         if (!selection->regions.empty()) {
3667                 get_regions_for_action (rs);
3668         }
3669
3670         switch (current_mouse_mode()) {
3671         case MouseObject:
3672                 if (!rs.empty() || !selection->points.empty()) {
3673
3674                         begin_reversible_command (opname + _(" objects"));
3675
3676                         if (!rs.empty()) {
3677                                 cut_copy_regions (op, rs);
3678
3679                                 if (op == Cut) {
3680                                         selection->clear_regions ();
3681                                 }
3682                         }
3683
3684                         if (!selection->points.empty()) {
3685                                 cut_copy_points (op);
3686
3687                                 if (op == Cut) {
3688                                         selection->clear_points ();
3689                                 }
3690                         }
3691
3692                         commit_reversible_command ();
3693                         break; // terminate case statement here
3694                 }
3695                 if (!selection->time.empty()) {
3696                         /* don't cause suprises */
3697                         break;
3698                 }
3699                 // fall thru if there was nothing selected
3700
3701         case MouseRange:
3702                 if (selection->time.empty()) {
3703                         nframes64_t start, end;
3704                         if (!get_edit_op_range (start, end)) {
3705                                 return;
3706                         }
3707                         selection->set ((TimeAxisView*) 0, start, end);
3708                 }
3709
3710                 begin_reversible_command (opname + _(" range"));
3711                 cut_copy_ranges (op);
3712                 commit_reversible_command ();
3713
3714                 if (op == Cut) {
3715                         selection->clear_time ();
3716                 }
3717
3718                 break;
3719
3720         default:
3721                 break;
3722         }
3723 }
3724
3725 /** Cut, copy or clear selected automation points.
3726  * @param op Operation (Cut, Copy or Clear)
3727  */
3728 void
3729 Editor::cut_copy_points (CutCopyOp op)
3730 {
3731         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
3732
3733                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
3734
3735                 if (atv) {
3736                         atv->cut_copy_clear_objects (selection->points, op);
3737                 }
3738         }
3739 }
3740
3741 struct PlaylistState {
3742     boost::shared_ptr<Playlist> playlist;
3743     XMLNode*  before;
3744 };
3745
3746 struct lt_playlist {
3747     bool operator () (const PlaylistState& a, const PlaylistState& b) {
3748             return a.playlist < b.playlist;
3749     }
3750 };
3751
3752 struct PlaylistMapping {
3753     TimeAxisView* tv;
3754     boost::shared_ptr<Playlist> pl;
3755
3756     PlaylistMapping (TimeAxisView* tvp) : tv (tvp) {}
3757 };
3758
3759
3760 /** Cut, copy or clear selected regions.
3761  * @param op Operation (Cut, Copy or Clear)
3762  */
3763 void
3764 Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
3765 {
3766         /* we can't use a std::map here because the ordering is important, and we can't trivially sort
3767            a map when we want ordered access to both elements. i think.
3768         */
3769
3770         vector<PlaylistMapping> pmap;
3771
3772         nframes_t first_position = max_frames;
3773
3774         set<PlaylistState, lt_playlist> freezelist;
3775         pair<set<PlaylistState, lt_playlist>::iterator,bool> insert_result;
3776
3777         /* get ordering correct before we cut/copy */
3778
3779         rs.sort_by_position_and_track ();
3780
3781         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3782
3783                 first_position = min ((*x)->region()->position(), first_position);
3784
3785                 if (op == Cut || op == Clear) {
3786                         boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3787
3788                         if (pl) {
3789
3790                                 PlaylistState before;
3791                                 before.playlist = pl;
3792                                 before.before = &pl->get_state();
3793
3794                                 insert_result = freezelist.insert (before);
3795
3796                                 if (insert_result.second) {
3797                                         pl->freeze ();
3798                                 }
3799                         }
3800                 }
3801
3802                 TimeAxisView* tv = &(*x)->get_trackview();
3803                 vector<PlaylistMapping>::iterator z;
3804
3805                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3806                         if ((*z).tv == tv) {
3807                                 break;
3808                         }
3809                 }
3810
3811                 if (z == pmap.end()) {
3812                         pmap.push_back (PlaylistMapping (tv));
3813                 }
3814         }
3815
3816         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ) {
3817
3818                 boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3819
3820                 if (!pl) {
3821                         /* impossible, but this handles it for the future */
3822                         continue;
3823                 }
3824
3825                 TimeAxisView& tv = (*x)->get_trackview();
3826                 boost::shared_ptr<Playlist> npl;
3827                 RegionSelection::iterator tmp;
3828
3829                 tmp = x;
3830                 ++tmp;
3831
3832                 vector<PlaylistMapping>::iterator z;
3833
3834                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3835                         if ((*z).tv == &tv) {
3836                                 break;
3837                         }
3838                 }
3839
3840                 assert (z != pmap.end());
3841
3842                 if (!(*z).pl) {
3843                         npl = PlaylistFactory::create (pl->data_type(), *session, "cutlist", true);
3844                         npl->freeze();
3845                         (*z).pl = npl;
3846                 } else {
3847                         npl = (*z).pl;
3848                 }
3849
3850                 boost::shared_ptr<Region> r = (*x)->region();
3851                 boost::shared_ptr<Region> _xx;
3852
3853                 assert (r != 0);
3854
3855                 switch (op) {
3856                 case Cut:
3857                         _xx = RegionFactory::create (r);
3858                         npl->add_region (_xx, r->position() - first_position);
3859                         pl->remove_region (r);
3860                         break;
3861
3862                 case Copy:
3863                         /* copy region before adding, so we're not putting same object into two different playlists */
3864                         npl->add_region (RegionFactory::create (r), r->position() - first_position);
3865                         break;
3866
3867                 case Clear:
3868                         pl->remove_region (r);
3869                         break;
3870                 }
3871
3872                 x = tmp;
3873         }
3874
3875         list<boost::shared_ptr<Playlist> > foo;
3876
3877         /* the pmap is in the same order as the tracks in which selected regions occured */
3878
3879         for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
3880                 (*i).pl->thaw();
3881                 foo.push_back ((*i).pl);
3882         }
3883
3884
3885         if (!foo.empty()) {
3886                 cut_buffer->set (foo);
3887         }
3888
3889         for (set<PlaylistState, lt_playlist>::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
3890                 (*pl).playlist->thaw ();
3891                 session->add_command (new MementoCommand<Playlist>(*(*pl).playlist, (*pl).before, &(*pl).playlist->get_state()));
3892         }
3893 }
3894
3895 void
3896 Editor::cut_copy_ranges (CutCopyOp op)
3897 {
3898         TrackSelection* ts;
3899         TrackSelection entered;
3900
3901         if (selection->tracks.empty()) {
3902                 if (!entered_track) {
3903                         return;
3904                 }
3905                 entered.push_back (entered_track);
3906                 ts = &entered;
3907         } else {
3908                 ts = &selection->tracks;
3909         }
3910
3911         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
3912                 (*i)->cut_copy_clear (*selection, op);
3913         }
3914 }
3915
3916 void
3917 Editor::paste (float times)
3918 {
3919         paste_internal (get_preferred_edit_position(), times);
3920 }
3921
3922 void
3923 Editor::mouse_paste ()
3924 {
3925         nframes64_t where;
3926         bool ignored;
3927
3928         if (!mouse_frame (where, ignored)) {
3929                 return;
3930         }
3931
3932         snap_to (where);
3933         paste_internal (where, 1);
3934 }
3935
3936 void
3937 Editor::paste_internal (nframes_t position, float times)
3938 {
3939         bool commit = false;
3940
3941         if (cut_buffer->empty()) {
3942                 return;
3943         }
3944
3945         if (position == max_frames) {
3946                 position = get_preferred_edit_position();
3947         }
3948
3949         begin_reversible_command (_("paste"));
3950
3951         TrackSelection ts;
3952         TrackSelection::iterator i;
3953         size_t nth;
3954
3955         /* get everything in the correct order */
3956
3957
3958         if (!selection->tracks.empty()) {
3959                 sort_track_selection ();
3960                 ts = selection->tracks;
3961         } else if (entered_track) {
3962                 ts.push_back (entered_track);
3963         }
3964
3965         for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
3966
3967                 /* undo/redo is handled by individual tracks */
3968
3969                 if ((*i)->paste (position, times, *cut_buffer, nth)) {
3970                         commit = true;
3971                 }
3972         }
3973
3974         if (commit) {
3975                 commit_reversible_command ();
3976         }
3977 }
3978
3979 void
3980 Editor::paste_named_selection (float times)
3981 {
3982         TrackSelection::iterator t;
3983
3984         Glib::RefPtr<TreeSelection> selected = named_selection_display.get_selection();
3985
3986         if (selected->count_selected_rows() != 1 || selection->tracks.empty()) {
3987                 return;
3988         }
3989
3990         TreeModel::iterator i = selected->get_selected();
3991         NamedSelection* ns = (*i)[named_selection_columns.selection];
3992
3993         list<boost::shared_ptr<Playlist> >::iterator chunk;
3994         list<boost::shared_ptr<Playlist> >::iterator tmp;
3995
3996         chunk = ns->playlists.begin();
3997
3998         begin_reversible_command (_("paste chunk"));
3999
4000         sort_track_selection ();
4001
4002         for (t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
4003
4004                 RouteTimeAxisView* rtv;
4005                 boost::shared_ptr<Playlist> pl;
4006                 boost::shared_ptr<AudioPlaylist> apl;
4007
4008                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*t)) == 0) {
4009                         continue;
4010                 }
4011
4012                 if ((pl = rtv->playlist()) == 0) {
4013                         continue;
4014                 }
4015
4016                 if ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) == 0) {
4017                         continue;
4018                 }
4019
4020                 tmp = chunk;
4021                 ++tmp;
4022
4023                 XMLNode &before = apl->get_state();
4024                 apl->paste (*chunk, get_preferred_edit_position(), times);
4025                 session->add_command(new MementoCommand<AudioPlaylist>(*apl, &before, &apl->get_state()));
4026
4027                 if (tmp != ns->playlists.end()) {
4028                         chunk = tmp;
4029                 }
4030         }
4031
4032         commit_reversible_command();
4033 }
4034
4035 void
4036 Editor::duplicate_some_regions (RegionSelection& regions, float times)
4037 {
4038         boost::shared_ptr<Playlist> playlist;
4039         RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
4040         RegionSelection foo;
4041
4042         begin_reversible_command (_("duplicate region"));
4043
4044         selection->clear_regions ();
4045
4046         for (RegionSelection::iterator i = sel.begin(); i != sel.end(); ++i) {
4047
4048                 boost::shared_ptr<Region> r ((*i)->region());
4049
4050                 TimeAxisView& tv = (*i)->get_time_axis_view();
4051                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
4052                 latest_regionviews.clear ();
4053                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
4054
4055                 playlist = (*i)->region()->playlist();
4056                 XMLNode &before = playlist->get_state();
4057                 playlist->duplicate (r, r->last_frame(), times);
4058                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
4059
4060                 c.disconnect ();
4061
4062                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
4063         }
4064
4065         commit_reversible_command ();
4066
4067         if (!foo.empty()) {
4068                 selection->set (foo);
4069         }
4070 }
4071
4072 void
4073 Editor::duplicate_selection (float times)
4074 {
4075         if (selection->time.empty() || selection->tracks.empty()) {
4076                 return;
4077         }
4078
4079         boost::shared_ptr<Playlist> playlist;
4080         vector<boost::shared_ptr<Region> > new_regions;
4081         vector<boost::shared_ptr<Region> >::iterator ri;
4082
4083         create_region_from_selection (new_regions);
4084
4085         if (new_regions.empty()) {
4086                 return;
4087         }
4088
4089         begin_reversible_command (_("duplicate selection"));
4090
4091         ri = new_regions.begin();
4092
4093         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4094                 if ((playlist = (*i)->playlist()) == 0) {
4095                         continue;
4096                 }
4097                 XMLNode &before = playlist->get_state();
4098                 playlist->duplicate (*ri, selection->time[clicked_selection].end, times);
4099                 XMLNode &after = playlist->get_state();
4100                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4101
4102                 ++ri;
4103                 if (ri == new_regions.end()) {
4104                         --ri;
4105                 }
4106         }
4107
4108         commit_reversible_command ();
4109 }
4110
4111 void
4112 Editor::reset_point_selection ()
4113 {
4114         /* reset all selected points to the relevant default value */
4115
4116         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
4117
4118                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
4119
4120                 if (atv) {
4121                         atv->reset_objects (selection->points);
4122                 }
4123         }
4124 }
4125
4126 void
4127 Editor::center_playhead ()
4128 {
4129         float page = canvas_width * frames_per_unit;
4130         center_screen_internal (playhead_cursor->current_frame, page);
4131 }
4132
4133 void
4134 Editor::center_edit_point ()
4135 {
4136         float page = canvas_width * frames_per_unit;
4137         center_screen_internal (get_preferred_edit_position(), page);
4138 }
4139
4140 void
4141 Editor::clear_playlist (boost::shared_ptr<Playlist> playlist)
4142 {
4143         begin_reversible_command (_("clear playlist"));
4144         XMLNode &before = playlist->get_state();
4145         playlist->clear ();
4146         XMLNode &after = playlist->get_state();
4147         session->add_command (new MementoCommand<Playlist>(*playlist.get(), &before, &after));
4148         commit_reversible_command ();
4149 }
4150
4151 void
4152 Editor::nudge_track (bool use_edit, bool forwards)
4153 {
4154         boost::shared_ptr<Playlist> playlist;
4155         nframes_t distance;
4156         nframes_t next_distance;
4157         nframes_t start;
4158
4159         if (use_edit) {
4160                 start = get_preferred_edit_position();
4161         } else {
4162                 start = 0;
4163         }
4164
4165         if ((distance = get_nudge_distance (start, next_distance)) == 0) {
4166                 return;
4167         }
4168
4169         if (selection->tracks.empty()) {
4170                 return;
4171         }
4172
4173         begin_reversible_command (_("nudge track"));
4174
4175         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4176
4177                 if ((playlist = (*i)->playlist()) == 0) {
4178                         continue;
4179                 }
4180
4181                 XMLNode &before = playlist->get_state();
4182                 playlist->nudge_after (start, distance, forwards);
4183                 XMLNode &after = playlist->get_state();
4184                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4185         }
4186
4187         commit_reversible_command ();
4188 }
4189
4190 void
4191 Editor::remove_last_capture ()
4192 {
4193         vector<string> choices;
4194         string prompt;
4195
4196         if (!session) {
4197                 return;
4198         }
4199
4200         if (Config->get_verify_remove_last_capture()) {
4201                 prompt  = _("Do you really want to destroy the last capture?"
4202                             "\n(This is destructive and cannot be undone)");
4203
4204                 choices.push_back (_("No, do nothing."));
4205                 choices.push_back (_("Yes, destroy it."));
4206
4207                 Gtkmm2ext::Choice prompter (prompt, choices);
4208
4209                 if (prompter.run () == 1) {
4210                         session->remove_last_capture ();
4211                 }
4212
4213         } else {
4214                 session->remove_last_capture();
4215         }
4216 }
4217
4218 void
4219 Editor::normalize_region ()
4220 {
4221         RegionSelection rs;
4222
4223         get_regions_for_action (rs);
4224
4225         if (!session) {
4226                 return;
4227         }
4228
4229         if (rs.empty()) {
4230                 return;
4231         }
4232
4233         begin_reversible_command (_("normalize"));
4234
4235         track_canvas->get_window()->set_cursor (*wait_cursor);
4236         gdk_flush ();
4237
4238         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4239                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4240                 if (!arv)
4241                         continue;
4242                 XMLNode &before = arv->region()->get_state();
4243                 arv->audio_region()->normalize_to (0.0f);
4244                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4245         }
4246
4247         commit_reversible_command ();
4248         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
4249 }
4250
4251
4252 void
4253 Editor::denormalize_region ()
4254 {
4255         if (!session) {
4256                 return;
4257         }
4258
4259         RegionSelection rs;
4260
4261         get_regions_for_action (rs);
4262
4263         if (rs.empty()) {
4264                 return;
4265         }
4266
4267         begin_reversible_command ("denormalize");
4268
4269         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4270                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4271                 if (!arv)
4272                         continue;
4273                 XMLNode &before = arv->region()->get_state();
4274                 arv->audio_region()->set_scale_amplitude (1.0f);
4275                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4276         }
4277
4278         commit_reversible_command ();
4279 }
4280
4281 void
4282 Editor::adjust_region_scale_amplitude (bool up)
4283 {
4284         if (!session) {
4285                 return;
4286         }
4287
4288         RegionSelection rs;
4289
4290         get_regions_for_action (rs);
4291
4292         if (rs.empty()) {
4293                 return;
4294         }
4295
4296         begin_reversible_command ("denormalize");
4297
4298         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4299                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4300                 if (!arv)
4301                         continue;
4302                 XMLNode &before = arv->region()->get_state();
4303
4304                 double fraction = gain_to_slider_position (arv->audio_region()->scale_amplitude ());
4305
4306                 if (up) {
4307                         fraction += 0.05;
4308                         fraction = min (fraction, 1.0);
4309                 } else {
4310                         fraction -= 0.05;
4311                         fraction = max (fraction, 0.0);
4312                 }
4313
4314                 if (!up && fraction <= 0) {
4315                         continue;
4316                 }
4317
4318                 fraction = slider_position_to_gain (fraction);
4319                 fraction = coefficient_to_dB (fraction);
4320                 fraction = dB_to_coefficient (fraction);
4321
4322                 if (up && fraction >= 2.0) {
4323                         continue;
4324                 }
4325
4326                 arv->audio_region()->set_scale_amplitude (fraction);
4327                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4328         }
4329
4330         commit_reversible_command ();
4331 }
4332
4333
4334 void
4335 Editor::reverse_region ()
4336 {
4337         if (!session) {
4338                 return;
4339         }
4340
4341         Reverse rev (*session);
4342         apply_filter (rev, _("reverse regions"));
4343 }
4344
4345
4346 void
4347 Editor::quantize_region ()
4348 {
4349         if (!session) {
4350                 return;
4351         }
4352
4353         // FIXME: varying meter?
4354         Quantize quant (*session, snap_length_beats(0));
4355         apply_filter (quant, _("quantize regions"));
4356 }
4357
4358 void
4359 Editor::apply_filter (Filter& filter, string command)
4360 {
4361         RegionSelection rs;
4362
4363         get_regions_for_action (rs);
4364
4365         if (rs.empty()) {
4366                 return;
4367         }
4368
4369         begin_reversible_command (command);
4370
4371         track_canvas->get_window()->set_cursor (*wait_cursor);
4372         gdk_flush ();
4373
4374         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4375                 RegionSelection::iterator tmp = r;
4376                 ++tmp;
4377
4378                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
4379                 if (mrv) {
4380                         if (mrv->midi_region()->apply(filter) == 0) {
4381                                 mrv->redisplay_model();
4382                         }
4383                 }
4384
4385                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4386                 if (arv) {
4387                         boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
4388
4389                         if (arv->audio_region()->apply (filter) == 0) {
4390
4391                                 XMLNode &before = playlist->get_state();
4392                                 playlist->replace_region (arv->region(), filter.results.front(), arv->region()->position());
4393                                 XMLNode &after = playlist->get_state();
4394                                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
4395                         } else {
4396                                 goto out;
4397                         }
4398                 }
4399
4400                 r = tmp;
4401         }
4402
4403         commit_reversible_command ();
4404         rs.clear ();
4405
4406   out:
4407         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
4408 }
4409
4410 void
4411 Editor::region_selection_op (void (Region::*pmf)(void))
4412 {
4413         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4414                 Region* region = (*i)->region().get();
4415                 (region->*pmf)();
4416         }
4417 }
4418
4419
4420 void
4421 Editor::region_selection_op (void (Region::*pmf)(void*), void *arg)
4422 {
4423         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4424                 Region* region = (*i)->region().get();
4425                 (region->*pmf)(arg);
4426         }
4427 }
4428
4429 void
4430 Editor::region_selection_op (void (Region::*pmf)(bool), bool yn)
4431 {
4432         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4433                 Region* region = (*i)->region().get();
4434                 (region->*pmf)(yn);
4435         }
4436 }
4437
4438 void
4439 Editor::external_edit_region ()
4440 {
4441         /* more to come */
4442 }
4443
4444 void
4445 Editor::brush (nframes_t pos)
4446 {
4447         RegionSelection sel;
4448         RegionSelection rs;
4449
4450         get_regions_for_action (rs);
4451
4452         snap_to (pos);
4453
4454         if (rs.empty()) {
4455                 return;
4456         }
4457
4458         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4459                 mouse_brush_insert_region ((*i), pos);
4460         }
4461 }
4462
4463 void
4464 Editor::reset_region_gain_envelopes ()
4465 {
4466         RegionSelection rs;
4467
4468         get_regions_for_action (rs);
4469
4470         if (!session || rs.empty()) {
4471                 return;
4472         }
4473
4474         session->begin_reversible_command (_("reset region gain"));
4475
4476         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4477                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4478                 if (arv) {
4479                         boost::shared_ptr<AutomationList> alist (arv->audio_region()->envelope());
4480                         XMLNode& before (alist->get_state());
4481
4482                         arv->audio_region()->set_default_envelope ();
4483                         session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
4484                 }
4485         }
4486
4487         session->commit_reversible_command ();
4488 }
4489
4490 void
4491 Editor::toggle_gain_envelope_visibility ()
4492 {
4493         RegionSelection rs;
4494
4495         get_regions_for_action (rs);
4496
4497         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4498                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4499                 if (arv) {
4500                         arv->set_envelope_visible (!arv->envelope_visible());
4501                 }
4502         }
4503 }
4504
4505 void
4506 Editor::toggle_gain_envelope_active ()
4507 {
4508         RegionSelection rs;
4509
4510         get_regions_for_action (rs);
4511
4512         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4513                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4514                 if (arv) {
4515                         arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
4516                 }
4517         }
4518 }
4519
4520 void
4521 Editor::toggle_region_lock ()
4522 {
4523         RegionSelection rs;
4524
4525         get_regions_for_action (rs);
4526
4527         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4528                 (*i)->region()->set_locked (!(*i)->region()->locked());
4529         }
4530 }
4531
4532 void
4533 Editor::set_region_lock_style (Region::PositionLockStyle ps)
4534 {
4535         RegionSelection rs;
4536
4537         get_regions_for_action (rs);
4538
4539         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4540                 (*i)->region()->set_position_lock_style (ps);
4541         }
4542 }
4543
4544
4545 void
4546 Editor::toggle_region_mute ()
4547 {
4548         RegionSelection rs;
4549
4550         get_regions_for_action (rs);
4551
4552         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4553                 (*i)->region()->set_muted (!(*i)->region()->muted());
4554         }
4555 }
4556
4557 void
4558 Editor::toggle_region_opaque ()
4559 {
4560         RegionSelection rs;
4561
4562         get_regions_for_action (rs);
4563
4564         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4565                 (*i)->region()->set_opaque (!(*i)->region()->opaque());
4566         }
4567 }
4568
4569 void
4570 Editor::set_fade_length (bool in)
4571 {
4572         RegionSelection rs;
4573
4574         get_regions_for_action (rs);
4575
4576         /* we need a region to measure the offset from the start */
4577
4578         RegionView* rv;
4579
4580         if (!rs.empty()) {
4581                 rv = rs.front();
4582         } else if (entered_regionview) {
4583                 rv = entered_regionview;
4584         } else {
4585                 return;
4586         }
4587
4588         nframes64_t pos = get_preferred_edit_position();
4589         nframes_t len;
4590         char* cmd;
4591
4592         if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
4593                 /* edit point is outside the relevant region */
4594                 return;
4595         }
4596
4597         if (in) {
4598                 if (pos <= rv->region()->position()) {
4599                         /* can't do it */
4600                         return;
4601                 }
4602                 len = pos - rv->region()->position();
4603                 cmd = _("set fade in length");
4604         } else {
4605                 if (pos >= rv->region()->last_frame()) {
4606                         /* can't do it */
4607                         return;
4608                 }
4609                 len = rv->region()->last_frame() - pos;
4610                 cmd = _("set fade out length");
4611         }
4612
4613         begin_reversible_command (cmd);
4614
4615         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4616                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4617
4618                 if (!tmp) {
4619                         return;
4620                 }
4621
4622                 boost::shared_ptr<AutomationList> alist;
4623                 if (in) {
4624                         alist = tmp->audio_region()->fade_in();
4625                 } else {
4626                         alist = tmp->audio_region()->fade_out();
4627                 }
4628
4629                 XMLNode &before = alist->get_state();
4630
4631                 if (in) {
4632                         tmp->audio_region()->set_fade_in_length (len);
4633                         tmp->audio_region()->set_fade_in_active (true);
4634                 } else {
4635                         tmp->audio_region()->set_fade_out_length (len);
4636                         tmp->audio_region()->set_fade_out_active (true);
4637                 }
4638
4639                 XMLNode &after = alist->get_state();
4640                 session->add_command(new MementoCommand<AutomationList>(*alist, &before, &after));
4641         }
4642
4643         commit_reversible_command ();
4644 }
4645
4646 void
4647 Editor::toggle_fade_active (bool in)
4648 {
4649         RegionSelection rs;
4650
4651         get_regions_for_action (rs);
4652
4653         if (rs.empty()) {
4654                 return;
4655         }
4656
4657         const char* cmd = (in ? _("toggle fade in active") : _("toggle fade out active"));
4658         bool have_switch = false;
4659         bool yn = false;
4660
4661         begin_reversible_command (cmd);
4662
4663         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4664                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4665
4666                 if (!tmp) {
4667                         return;
4668                 }
4669
4670                 boost::shared_ptr<AudioRegion> region (tmp->audio_region());
4671
4672                 /* make the behaviour consistent across all regions */
4673
4674                 if (!have_switch) {
4675                         if (in) {
4676                                 yn = region->fade_in_active();
4677                         } else {
4678                                 yn = region->fade_out_active();
4679                         }
4680                         have_switch = true;
4681                 }
4682
4683                 XMLNode &before = region->get_state();
4684                 if (in) {
4685                         region->set_fade_in_active (!yn);
4686                 } else {
4687                         region->set_fade_out_active (!yn);
4688                 }
4689                 XMLNode &after = region->get_state();
4690                 session->add_command(new MementoCommand<AudioRegion>(*region.get(), &before, &after));
4691         }
4692
4693         commit_reversible_command ();
4694 }
4695
4696 void
4697 Editor::set_fade_in_shape (AudioRegion::FadeShape shape)
4698 {
4699         RegionSelection rs;
4700
4701         get_regions_for_action (rs);
4702
4703         if (rs.empty()) {
4704                 return;
4705         }
4706
4707         begin_reversible_command (_("set fade in shape"));
4708
4709         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4710                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4711
4712                 if (!tmp) {
4713                         return;
4714                 }
4715
4716                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
4717                 XMLNode &before = alist->get_state();
4718
4719                 tmp->audio_region()->set_fade_in_shape (shape);
4720
4721                 XMLNode &after = alist->get_state();
4722                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4723         }
4724
4725         commit_reversible_command ();
4726
4727 }
4728
4729 void
4730 Editor::set_fade_out_shape (AudioRegion::FadeShape shape)
4731 {
4732         RegionSelection rs;
4733
4734         get_regions_for_action (rs);
4735
4736         if (rs.empty()) {
4737                 return;
4738         }
4739
4740         begin_reversible_command (_("set fade out shape"));
4741
4742         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4743                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4744
4745                 if (!tmp) {
4746                         return;
4747                 }
4748
4749                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
4750                 XMLNode &before = alist->get_state();
4751
4752                 tmp->audio_region()->set_fade_out_shape (shape);
4753
4754                 XMLNode &after = alist->get_state();
4755                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4756         }
4757
4758         commit_reversible_command ();
4759 }
4760
4761 void
4762 Editor::set_fade_in_active (bool yn)
4763 {
4764         RegionSelection rs;
4765
4766         get_regions_for_action (rs);
4767
4768         if (rs.empty()) {
4769                 return;
4770         }
4771
4772         begin_reversible_command (_("set fade in active"));
4773
4774         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4775                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4776
4777                 if (!tmp) {
4778                         return;
4779                 }
4780
4781
4782                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4783
4784                 XMLNode &before = ar->get_state();
4785
4786                 ar->set_fade_in_active (yn);
4787
4788                 XMLNode &after = ar->get_state();
4789                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4790         }
4791
4792         commit_reversible_command ();
4793 }
4794
4795 void
4796 Editor::set_fade_out_active (bool yn)
4797 {
4798         RegionSelection rs;
4799
4800         get_regions_for_action (rs);
4801
4802         if (rs.empty()) {
4803                 return;
4804         }
4805
4806         begin_reversible_command (_("set fade out active"));
4807
4808         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4809                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4810
4811                 if (!tmp) {
4812                         return;
4813                 }
4814
4815                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4816
4817                 XMLNode &before = ar->get_state();
4818
4819                 ar->set_fade_out_active (yn);
4820
4821                 XMLNode &after = ar->get_state();
4822                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4823         }
4824
4825         commit_reversible_command ();
4826 }
4827
4828
4829 /** Update crossfade visibility after its configuration has been changed */
4830 void
4831 Editor::update_xfade_visibility ()
4832 {
4833         _xfade_visibility = Config->get_xfades_visible ();
4834
4835         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4836                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
4837                 if (v) {
4838                         if (_xfade_visibility) {
4839                                 v->show_all_xfades ();
4840                         } else {
4841                                 v->hide_all_xfades ();
4842                         }
4843                 }
4844         }
4845 }
4846
4847 void
4848 Editor::set_edit_point ()
4849 {
4850         nframes64_t where;
4851         bool ignored;
4852
4853         if (!mouse_frame (where, ignored)) {
4854                 return;
4855         }
4856
4857         snap_to (where);
4858
4859         if (selection->markers.empty()) {
4860
4861                 mouse_add_new_marker (where);
4862
4863         } else {
4864                 bool ignored;
4865
4866                 Location* loc = find_location_from_marker (selection->markers.front(), ignored);
4867
4868                 if (loc) {
4869                         loc->move_to (where);
4870                 }
4871         }
4872 }
4873
4874 void
4875 Editor::set_playhead_cursor ()
4876 {
4877         if (entered_marker) {
4878                 session->request_locate (entered_marker->position(), session->transport_rolling());
4879         } else {
4880                 nframes64_t where;
4881                 bool ignored;
4882
4883                 if (!mouse_frame (where, ignored)) {
4884                         return;
4885                 }
4886
4887                 snap_to (where);
4888
4889                 if (session) {
4890                         session->request_locate (where, session->transport_rolling());
4891                 }
4892         }
4893 }
4894
4895 void
4896 Editor::split ()
4897 {
4898         RegionSelection rs;
4899
4900         get_regions_for_action (rs);
4901
4902         nframes64_t where = get_preferred_edit_position();
4903
4904         if (rs.empty()) {
4905                 return;
4906         }
4907
4908         split_regions_at (where, rs);
4909 }
4910
4911 void
4912 Editor::ensure_entered_track_selected (bool op_really_wants_one_track_if_none_are_selected)
4913 {
4914         if (entered_track && mouse_mode == MouseObject) {
4915                 if (!selection->tracks.empty()) {
4916                         if (!selection->selected (entered_track)) {
4917                                 selection->add (entered_track);
4918                         }
4919                 } else {
4920                         /* there is no selection, but this operation requires/prefers selected objects */
4921
4922                         if (op_really_wants_one_track_if_none_are_selected) {
4923                                 selection->set (entered_track);
4924                         }
4925                 }
4926         }
4927 }
4928
4929 void
4930 Editor::trim_region_front ()
4931 {
4932         trim_region (true);
4933 }
4934
4935 void
4936 Editor::trim_region_back ()
4937 {
4938         trim_region (false);
4939 }
4940
4941 void
4942 Editor::trim_region (bool front)
4943 {
4944         nframes64_t where = get_preferred_edit_position();
4945         RegionSelection rs;
4946
4947         get_regions_for_action (rs);
4948
4949         if (rs.empty()) {
4950                 return;
4951         }
4952
4953         begin_reversible_command (front ? _("trim front") : _("trim back"));
4954
4955         for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
4956                 if (!(*i)->region()->locked()) {
4957                         boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
4958                         XMLNode &before = pl->get_state();
4959                         if (front) {
4960                                 (*i)->region()->trim_front (where, this);
4961                         } else {
4962                                 (*i)->region()->trim_end (where, this);
4963                         }
4964                         XMLNode &after = pl->get_state();
4965                         session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
4966                 }
4967         }
4968
4969         commit_reversible_command ();
4970 }
4971
4972 struct EditorOrderRouteSorter {
4973     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
4974             /* use of ">" forces the correct sort order */
4975             return a->order_key ("editor") < b->order_key ("editor");
4976     }
4977 };
4978
4979 void
4980 Editor::select_next_route()
4981 {
4982         if (selection->tracks.empty()) {
4983                 selection->set (track_views.front());
4984                 return;
4985         }
4986
4987         TimeAxisView* current = selection->tracks.front();
4988
4989         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4990                 if (*i == current) {
4991                         ++i;
4992                         if (i != track_views.end()) {
4993                                 selection->set (*i);
4994                         } else {
4995                                 selection->set (*(track_views.begin()));
4996                         }
4997                         break;
4998                 }
4999         }
5000 }
5001
5002 void
5003 Editor::select_prev_route()
5004 {
5005         if (selection->tracks.empty()) {
5006                 selection->set (track_views.front());
5007                 return;
5008         }
5009
5010         TimeAxisView* current = selection->tracks.front();
5011
5012         for (TrackViewList::reverse_iterator i = track_views.rbegin(); i != track_views.rend(); ++i) {
5013                 if (*i == current) {
5014                         ++i;
5015                         if (i != track_views.rend()) {
5016                                 selection->set (*i);
5017                         } else {
5018                                 selection->set (*(track_views.rbegin()));
5019                         }
5020                         break;
5021                 }
5022         }
5023 }
5024
5025 void
5026 Editor::set_loop_from_selection (bool play)
5027 {
5028         if (session == 0 || selection->time.empty()) {
5029                 return;
5030         }
5031
5032         nframes_t start = selection->time[clicked_selection].start;
5033         nframes_t end = selection->time[clicked_selection].end;
5034
5035         set_loop_range (start, end,  _("set loop range from selection"));
5036
5037         if (play) {
5038                 session->request_play_loop (true);
5039                 session->request_locate (start, true);
5040         }
5041 }
5042
5043 void
5044 Editor::set_loop_from_edit_range (bool play)
5045 {
5046         if (session == 0) {
5047                 return;
5048         }
5049
5050         nframes64_t start;
5051         nframes64_t end;
5052
5053         if (!get_edit_op_range (start, end)) {
5054                 return;
5055         }
5056
5057         set_loop_range (start, end,  _("set loop range from edit range"));
5058
5059         if (play) {
5060                 session->request_play_loop (true);
5061                 session->request_locate (start, true);
5062         }
5063 }
5064
5065 void
5066 Editor::set_loop_from_region (bool play)
5067 {
5068         nframes64_t start = max_frames;
5069         nframes64_t end = 0;
5070
5071         RegionSelection rs;
5072
5073         get_regions_for_action (rs);
5074
5075         if (rs.empty()) {
5076                 return;
5077         }
5078
5079         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5080                 if ((*i)->region()->position() < start) {
5081                         start = (*i)->region()->position();
5082                 }
5083                 if ((*i)->region()->last_frame() + 1 > end) {
5084                         end = (*i)->region()->last_frame() + 1;
5085                 }
5086         }
5087
5088         set_loop_range (start, end, _("set loop range from region"));
5089
5090         if (play) {
5091                 session->request_play_loop (true);
5092                 session->request_locate (start, true);
5093         }
5094 }
5095
5096 void
5097 Editor::set_punch_from_selection ()
5098 {
5099         if (session == 0 || selection->time.empty()) {
5100                 return;
5101         }
5102
5103         nframes_t start = selection->time[clicked_selection].start;
5104         nframes_t end = selection->time[clicked_selection].end;
5105
5106         set_punch_range (start, end,  _("set punch range from selection"));
5107 }
5108
5109 void
5110 Editor::set_punch_from_edit_range ()
5111 {
5112         if (session == 0) {
5113                 return;
5114         }
5115
5116         nframes64_t start;
5117         nframes64_t end;
5118
5119         if (!get_edit_op_range (start, end)) {
5120                 return;
5121         }
5122
5123         set_punch_range (start, end,  _("set punch range from edit range"));
5124 }
5125
5126 void
5127 Editor::set_punch_from_region ()
5128 {
5129         nframes64_t start = max_frames;
5130         nframes64_t end = 0;
5131
5132         RegionSelection rs;
5133
5134         get_regions_for_action (rs);
5135
5136         if (rs.empty()) {
5137                 return;
5138         }
5139
5140         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5141                 if ((*i)->region()->position() < start) {
5142                         start = (*i)->region()->position();
5143                 }
5144                 if ((*i)->region()->last_frame() + 1 > end) {
5145                         end = (*i)->region()->last_frame() + 1;
5146                 }
5147         }
5148
5149         set_punch_range (start, end, _("set punch range from region"));
5150 }
5151
5152 void
5153 Editor::pitch_shift_regions ()
5154 {
5155         RegionSelection rs;
5156
5157         get_regions_for_action (rs);
5158
5159         if (rs.empty()) {
5160                 return;
5161         }
5162
5163         pitch_shift (rs, 1.2);
5164 }
5165
5166 void
5167 Editor::use_region_as_bar ()
5168 {
5169         if (!session) {
5170                 return;
5171         }
5172
5173         RegionSelection rs;
5174
5175         get_regions_for_action (rs);
5176
5177         if (rs.empty()) {
5178                 return;
5179         }
5180
5181         RegionView* rv = rs.front();
5182
5183         define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
5184 }
5185
5186 void
5187 Editor::use_range_as_bar ()
5188 {
5189         nframes64_t start, end;
5190         if (get_edit_op_range (start, end)) {
5191                 define_one_bar (start, end);
5192         }
5193 }
5194
5195 void
5196 Editor::define_one_bar (nframes64_t start, nframes64_t end)
5197 {
5198         nframes64_t length = end - start;
5199
5200         const Meter& m (session->tempo_map().meter_at (start));
5201
5202         /* length = 1 bar */
5203
5204         /* now we want frames per beat.
5205            we have frames per bar, and beats per bar, so ...
5206         */
5207
5208         double frames_per_beat = length / m.beats_per_bar();
5209
5210         /* beats per minute = */
5211
5212         double beats_per_minute = (session->frame_rate() * 60.0) / frames_per_beat;
5213
5214         /* now decide whether to:
5215
5216             (a) set global tempo
5217             (b) add a new tempo marker
5218
5219         */
5220
5221         const TempoSection& t (session->tempo_map().tempo_section_at (start));
5222
5223         bool do_global = false;
5224
5225         if ((session->tempo_map().n_tempos() == 1) && (session->tempo_map().n_meters() == 1)) {
5226
5227                 /* only 1 tempo & 1 meter: ask if the user wants to set the tempo
5228                    at the start, or create a new marker
5229                 */
5230
5231                 vector<string> options;
5232                 options.push_back (_("Cancel"));
5233                 options.push_back (_("Add new marker"));
5234                 options.push_back (_("Set global tempo"));
5235                 Choice c (_("Do you want to set the global tempo or add new tempo marker?"),
5236                           options);
5237                 c.set_default_response (2);
5238
5239                 switch (c.run()) {
5240                 case 0:
5241                         return;
5242
5243                 case 2:
5244                         do_global = true;
5245                         break;
5246
5247                 default:
5248                         do_global = false;
5249                 }
5250
5251         } else {
5252
5253                 /* more than 1 tempo and/or meter section already, go ahead do the "usual":
5254                    if the marker is at the region starter, change it, otherwise add
5255                    a new tempo marker
5256                 */
5257         }
5258
5259         begin_reversible_command (_("set tempo from region"));
5260         XMLNode& before (session->tempo_map().get_state());
5261
5262         if (do_global) {
5263                 session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type());
5264         } else if (t.frame() == start) {
5265                 session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type());
5266         } else {
5267                 session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), start);
5268         }
5269
5270         XMLNode& after (session->tempo_map().get_state());
5271
5272         session->add_command (new MementoCommand<TempoMap>(session->tempo_map(), &before, &after));
5273         commit_reversible_command ();
5274 }
5275
5276 void
5277 Editor::split_region_at_transients ()
5278 {
5279         AnalysisFeatureList positions;
5280
5281         if (!session) {
5282                 return;
5283         }
5284
5285         RegionSelection rs;
5286
5287         get_regions_for_action (rs);
5288
5289         if (rs.empty()) {
5290                 return;
5291         }
5292
5293         session->begin_reversible_command (_("split regions"));
5294
5295         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
5296
5297                 RegionSelection::iterator tmp;
5298
5299                 tmp = i;
5300                 ++tmp;
5301
5302                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i)->region());
5303
5304                 if (ar && (ar->get_transients (positions) == 0)) {
5305                         split_region_at_points ((*i)->region(), positions, true);
5306                         positions.clear ();
5307                 }
5308
5309                 i = tmp;
5310         }
5311
5312         session->commit_reversible_command ();
5313
5314 }
5315
5316 void
5317 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret)
5318 {
5319         bool use_rhythmic_rodent = false;
5320
5321         boost::shared_ptr<Playlist> pl = r->playlist();
5322
5323         if (!pl) {
5324                 return;
5325         }
5326
5327         if (positions.empty()) {
5328                 return;
5329         }
5330
5331
5332         if (positions.size() > 20) {
5333                 Glib::ustring msgstr = string_compose (_("You are about to split\n%1\ninto %2 pieces.\nThis could take a long time."), r->name(), positions.size() + 1);
5334                 MessageDialog msg (msgstr,
5335                                    false,
5336                                    Gtk::MESSAGE_INFO,
5337                                    Gtk::BUTTONS_OK_CANCEL);
5338
5339                 if (can_ferret) {
5340                         msg.add_button (_("Call for the Ferret!"), RESPONSE_APPLY);
5341                         msg.set_secondary_text (_("Press OK to continue with this split operation\nor ask the Ferret dialog to tune the analysis"));
5342                 } else {
5343                         msg.set_secondary_text (_("Press OK to continue with this split operation"));
5344                 }
5345
5346                 msg.set_title (_("Excessive split?"));
5347                 msg.present ();
5348
5349                 int response = msg.run();
5350                 msg.hide ();
5351                 switch (response) {
5352                 case RESPONSE_OK:
5353                         break;
5354                 case RESPONSE_APPLY:
5355                         use_rhythmic_rodent = true;
5356                         break;
5357                 default:
5358                         return;
5359                 }
5360         }
5361
5362         if (use_rhythmic_rodent) {
5363                 show_rhythm_ferret ();
5364                 return;
5365         }
5366
5367         AnalysisFeatureList::const_iterator x;
5368
5369         nframes64_t pos = r->position();
5370
5371         XMLNode& before (pl->get_state());
5372
5373         x = positions.begin();
5374
5375         while (x != positions.end()) {
5376                 if ((*x) > pos) {
5377                         break;
5378                 }
5379                 ++x;
5380         }
5381
5382         if (x == positions.end()) {
5383                 return;
5384         }
5385
5386         pl->freeze ();
5387         pl->remove_region (r);
5388
5389         while (x != positions.end()) {
5390
5391                 /* file start = original start + how far we from the initial position ?
5392                  */
5393
5394                 nframes64_t file_start = r->start() + (pos - r->position());
5395
5396                 /* length = next position - current position
5397                  */
5398
5399                 nframes64_t len = (*x) - pos;
5400
5401                 /* XXX we do we really want to allow even single-sample regions?
5402                    shouldn't we have some kind of lower limit on region size?
5403                 */
5404
5405                 if (len <= 0) {
5406                         break;
5407                 }
5408
5409                 string new_name;
5410
5411                 if (session->region_name (new_name, r->name())) {
5412                         break;
5413                 }
5414
5415                 /* do NOT announce new regions 1 by one, just wait till they are all done */
5416
5417                 boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags, false);
5418                 pl->add_region (nr, pos);
5419
5420                 pos += len;
5421                 ++x;
5422
5423                 if (*x > r->last_frame()) {
5424
5425                         /* add final fragment */
5426
5427                         file_start = r->start() + (pos - r->position());
5428                         len = r->last_frame() - pos;
5429
5430                         nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags);
5431                         pl->add_region (nr, pos);
5432
5433                         break;
5434                 }
5435         }
5436
5437         pl->thaw ();
5438
5439         XMLNode& after (pl->get_state());
5440
5441         session->add_command (new MementoCommand<Playlist>(*pl, &before, &after));
5442 }
5443
5444 void
5445 Editor::tab_to_transient (bool forward)
5446 {
5447         AnalysisFeatureList positions;
5448
5449         if (!session) {
5450                 return;
5451         }
5452
5453         nframes64_t pos = session->audible_frame ();
5454
5455         if (!selection->tracks.empty()) {
5456
5457                 for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
5458
5459                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
5460
5461                         if (rtv) {
5462                                 boost::shared_ptr<Diskstream> ds = rtv->get_diskstream();
5463                                 if (ds) {
5464                                         boost::shared_ptr<Playlist> pl = rtv->get_diskstream()->playlist ();
5465                                         if (pl) {
5466                                                 nframes64_t result = pl->find_next_transient (pos, forward ? 1 : -1);
5467
5468                                                 if (result >= 0) {
5469                                                         positions.push_back (result);
5470                                                 }
5471                                         }
5472                                 }
5473                         }
5474                 }
5475
5476         } else {
5477
5478                 RegionSelection rs;
5479
5480                 get_regions_for_action (rs);
5481
5482                 if (rs.empty()) {
5483                         return;
5484                 }
5485
5486                 for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5487                         (*r)->region()->get_transients (positions);
5488                 }
5489         }
5490
5491         TransientDetector::cleanup_transients (positions, session->frame_rate(), 3.0);
5492
5493         if (forward) {
5494                 AnalysisFeatureList::iterator x;
5495
5496                 for (x = positions.begin(); x != positions.end(); ++x) {
5497                         if ((*x) > pos) {
5498                                 break;
5499                         }
5500                 }
5501
5502                 if (x != positions.end ()) {
5503                         session->request_locate (*x);
5504                 }
5505
5506         } else {
5507                 AnalysisFeatureList::reverse_iterator x;
5508
5509                 for (x = positions.rbegin(); x != positions.rend(); ++x) {
5510                         if ((*x) < pos) {
5511                                 break;
5512                         }
5513                 }
5514
5515                 if (x != positions.rend ()) {
5516                         session->request_locate (*x);
5517                 }
5518         }
5519 }
5520
5521 void
5522 Editor::playhead_forward_to_grid ()
5523 {
5524         if (!session) return;
5525         nframes64_t pos = playhead_cursor->current_frame;
5526         if (pos < max_frames) {
5527                 pos++;
5528                 snap_to_internal (pos, 1, false);
5529                 session->request_locate (pos);
5530         }
5531 }
5532
5533
5534 void
5535 Editor::playhead_backward_to_grid ()
5536 {
5537         if (!session) return;
5538         nframes64_t pos = playhead_cursor->current_frame;
5539         if (pos > 1) {
5540                 pos--;
5541                 snap_to_internal (pos, -1, false);
5542                 session->request_locate (pos);
5543         }
5544 }
5545
5546 void
5547 Editor::set_track_height (TimeAxisView::TrackHeight h)
5548 {
5549         TrackSelection& ts (selection->tracks);
5550
5551         if (ts.empty()) {
5552                 return;
5553         }
5554
5555         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5556                 (*x)->set_height (h);
5557         }
5558 }
5559
5560 void
5561 Editor::set_track_height_largest ()
5562 {
5563         set_track_height (TimeAxisView::Largest);
5564 }
5565 void
5566 Editor::set_track_height_large ()
5567 {
5568         set_track_height (TimeAxisView::Large);
5569 }
5570 void
5571 Editor::set_track_height_larger ()
5572 {
5573         set_track_height (TimeAxisView::Larger);
5574 }
5575 void
5576 Editor::set_track_height_normal ()
5577 {
5578         set_track_height (TimeAxisView::Normal);
5579 }
5580 void
5581 Editor::set_track_height_smaller ()
5582 {
5583         set_track_height (TimeAxisView::Smaller);
5584 }
5585 void
5586 Editor::set_track_height_small ()
5587 {
5588         set_track_height (TimeAxisView::Small);
5589 }
5590
5591 void
5592 Editor::toggle_tracks_active ()
5593 {
5594         TrackSelection& ts (selection->tracks);
5595         bool first = true;
5596         bool target = false;
5597
5598         if (ts.empty()) {
5599                 return;
5600         }
5601
5602         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5603                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*x);
5604
5605                 if (rtv) {
5606                         if (first) {
5607                                 target = !rtv->_route->active();
5608                                 first = false;
5609                         }
5610                         rtv->_route->set_active (target);
5611                 }
5612         }
5613 }
5614
5615 void
5616 Editor::remove_tracks ()
5617 {
5618         TrackSelection& ts (selection->tracks);
5619
5620         if (ts.empty()) {
5621                 return;
5622         }
5623
5624         vector<string> choices;
5625         string prompt;
5626         int ntracks = 0;
5627         int nbusses = 0;
5628         const char* trackstr;
5629         const char* busstr;
5630         vector<boost::shared_ptr<Route> > routes;
5631
5632         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5633                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*x);
5634                 if (rtv) {
5635                         if (rtv->is_track()) {
5636                                 ntracks++;
5637                         } else {
5638                                 nbusses++;
5639                         }
5640                 }
5641                 routes.push_back (rtv->_route);
5642         }
5643
5644         if (ntracks + nbusses == 0) {
5645                 return;
5646         }
5647
5648         if (ntracks > 1) {
5649                 trackstr = _("tracks");
5650         } else {
5651                 trackstr = _("track");
5652         }
5653
5654         if (nbusses > 1) {
5655                 busstr = _("busses");
5656         } else {
5657                 busstr = _("bus");
5658         }
5659
5660         if (ntracks) {
5661                 if (nbusses) {
5662                         prompt  = string_compose (_("Do you really want to remove %1 %2 and %3 %4?\n"
5663                                                     "(You may also lose the playlists associated with the %2)\n\n"
5664                                                     "This action cannot be undone!"),
5665                                                   ntracks, trackstr, nbusses, busstr);
5666                 } else {
5667                         prompt  = string_compose (_("Do you really want to remove %1 %2?\n"
5668                                                     "(You may also lose the playlists associated with the %2)\n\n"
5669                                                     "This action cannot be undone!"),
5670                                                   ntracks, trackstr);
5671                 }
5672         } else if (nbusses) {
5673                 prompt  = string_compose (_("Do you really want to remove %1 %2?"),
5674                                           nbusses, busstr);
5675         }
5676
5677         choices.push_back (_("No, do nothing."));
5678         if (ntracks + nbusses > 1) {
5679                 choices.push_back (_("Yes, remove them."));
5680         } else {
5681                 choices.push_back (_("Yes, remove it."));
5682         }
5683
5684         Choice prompter (prompt, choices);
5685
5686         if (prompter.run () != 1) {
5687                 return;
5688         }
5689
5690         for (vector<boost::shared_ptr<Route> >::iterator x = routes.begin(); x != routes.end(); ++x) {
5691                 session->remove_route (*x);
5692         }
5693 }
5694
5695 void
5696 Editor::set_waveform_scale (WaveformScale ws)
5697 {
5698         TrackSelection& ts (selection->tracks);
5699
5700         if (ts.empty()) {
5701                 return;
5702         }
5703
5704         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5705                 AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (*x);
5706                 if (atv) {
5707                         atv->set_waveform_scale (ws);
5708                 }
5709         }
5710 }
5711
5712 void
5713 Editor::do_insert_time ()
5714 {
5715         if (selection->tracks.empty()) {
5716                 return;
5717         }
5718
5719         nframes64_t pos = get_preferred_edit_position ();
5720         ArdourDialog d (*this, _("Insert Time"));
5721         VButtonBox button_box;
5722         VBox option_box;
5723         RadioButtonGroup group;
5724         RadioButton leave_button (group, _("Stay in position"));
5725         RadioButton move_button (group, _("Move"));
5726         RadioButton split_button (group, _("Split & Later Section Moves"));
5727         Label intersect_option_label (_("Intersected regions should:"));
5728         ToggleButton glue_button (_("Move Glued Regions"));
5729         AudioClock clock ("insertTimeClock", true, X_("InsertTimeClock"), true, true, true);
5730         HBox clock_box;
5731
5732         clock.set (0);
5733         clock.set_session (session);
5734         clock.set_bbt_reference (pos);
5735
5736         clock_box.pack_start (clock, false, true);
5737
5738         option_box.set_spacing (6);
5739         option_box.pack_start (intersect_option_label, false, false);
5740         option_box.pack_start (button_box, false, false);
5741         option_box.pack_start (glue_button, false, false);
5742
5743         button_box.pack_start (leave_button, false, false);
5744         button_box.pack_start (move_button, false, false);
5745         button_box.pack_start (split_button, false, false);
5746
5747         d.get_vbox()->set_border_width (12);
5748         d.get_vbox()->pack_start (clock_box, false, false);
5749         d.get_vbox()->pack_start (option_box, false, false);
5750
5751         leave_button.show ();
5752         move_button.show ();
5753         split_button.show ();
5754         intersect_option_label.show ();
5755         option_box.show ();
5756         button_box.show ();
5757         glue_button.show ();
5758         clock.show_all();
5759         clock_box.show ();
5760
5761         d.add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
5762         d.add_button (Gtk::Stock::OK, Gtk::RESPONSE_OK);
5763         d.show ();
5764
5765         int response = d.run ();
5766
5767         if (response != RESPONSE_OK) {
5768                 return;
5769         }
5770
5771         nframes_t distance = clock.current_duration (pos);
5772
5773         if (distance == 0) {
5774                 return;
5775         }
5776
5777         InsertTimeOption opt;
5778
5779         if (leave_button.get_active()) {
5780                 opt = LeaveIntersected;
5781         } else if (move_button.get_active()) {
5782                 opt = MoveIntersected;
5783         } else {
5784                 opt = SplitIntersected;
5785         }
5786
5787         insert_time (pos, distance, opt, glue_button.get_active());
5788 }
5789
5790 void
5791 Editor::insert_time (nframes64_t pos, nframes64_t frames, InsertTimeOption opt, bool ignore_music_glue)
5792 {
5793         bool commit = false;
5794
5795         if (Config->get_edit_mode() == Lock) {
5796                 return;
5797         }
5798
5799         begin_reversible_command (_("insert time"));
5800
5801         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
5802                 boost::shared_ptr<Playlist> pl = (*x)->playlist();
5803
5804                 if (!pl) {
5805                         continue;
5806                 }
5807
5808                 XMLNode &before = pl->get_state();
5809
5810                 if (opt == SplitIntersected) {
5811                         pl->split (pos);
5812                 }
5813
5814                 pl->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
5815
5816                 XMLNode &after = pl->get_state();
5817
5818                 session->add_command (new MementoCommand<Playlist> (*pl, &before, &after));
5819                 commit = true;
5820         }
5821
5822         if (commit) {
5823                 commit_reversible_command ();
5824         }
5825 }