gtk2_ardour/editor_ops.cc

   1 /*
   2     Copyright (C) 2000-2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /* Note: public Editor methods are documented in public_editor.h */
  21
  22 #include <unistd.h>
  23
  24 #include <cstdlib>
  25 #include <cmath>
  26 #include <string>
  27 #include <map>
  28 #include <set>
  29
  30 #include <pbd/error.h>
  31 #include <pbd/basename.h>
  32 #include <pbd/pthread_utils.h>
  33 #include <pbd/memento_command.h>
  34 #include <pbd/whitespace.h>
  35
  36 #include <gtkmm2ext/utils.h>
  37 #include <gtkmm2ext/choice.h>
  38 #include <gtkmm2ext/window_title.h>
  39 #include <gtkmm2ext/popup.h>
  40
  41
  42 #include <ardour/audioengine.h>
  43 #include <ardour/session.h>
  44 #include <ardour/audioplaylist.h>
  45 #include <ardour/audioregion.h>
  46 #include <ardour/audio_diskstream.h>
  47 #include <ardour/utils.h>
  48 #include <ardour/location.h>
  49 #include <ardour/named_selection.h>
  50 #include <ardour/audio_track.h>
  51 #include <ardour/audiofilesource.h>
  52 #include <ardour/audioplaylist.h>
  53 #include <ardour/region_factory.h>
  54 #include <ardour/playlist_factory.h>
  55 #include <ardour/reverse.h>
  56 #include <ardour/transient_detector.h>
  57 #include <ardour/dB.h>
  58 #include <ardour/quantize.h>
  59
  60 #include "ardour_ui.h"
  61 #include "editor.h"
  62 #include "time_axis_view.h"
  63 #include "route_time_axis.h"
  64 #include "audio_time_axis.h"
  65 #include "automation_time_axis.h"
  66 #include "streamview.h"
  67 #include "audio_region_view.h"
  68 #include "midi_region_view.h"
  69 #include "rgb_macros.h"
  70 #include "selection_templates.h"
  71 #include "selection.h"
  72 #include "editing.h"
  73 #include "gtk-custom-hruler.h"
  74 #include "gui_thread.h"
  75 #include "keyboard.h"
  76 #include "utils.h"
  77
  78 #include "i18n.h"
  79
  80 using namespace std;
  81 using namespace ARDOUR;
  82 using namespace PBD;
  83 using namespace sigc;
  84 using namespace Gtk;
  85 using namespace Gtkmm2ext;
  86 using namespace Editing;
  87
  88 /***********************************************************************
  89   Editor operations
  90  ***********************************************************************/
  91
  92 void
  93 Editor::undo (uint32_t n)
  94 {
  95         if (session) {
  96                 session->undo (n);
  97         }
  98 }
  99
 100 void
 101 Editor::redo (uint32_t n)
 102 {
 103         if (session) {
 104                 session->redo (n);
 105         }
 106 }
 107
 108 void
 109 Editor::split_region ()
 110 {
 111         split_region_at (get_preferred_edit_position());
 112 }
 113
 114 void
 115 Editor::split_region_at (nframes64_t where)
 116 {
 117         RegionSelection rs;
 118
 119         get_regions_for_action (rs);
 120         split_regions_at (where, selection->regions);
 121 }
 122
 123 void
 124 Editor::split_regions_at (nframes64_t where, RegionSelection& regions)
 125 {
 126         list <boost::shared_ptr<Playlist > > used_playlists;
 127
 128         if (regions.empty()) {
 129                 return;
 130         }
 131
 132         begin_reversible_command (_("split"));
 133
 134         // if splitting a single region, and snap-to is using
 135         // region boundaries, don't pay attention to them
 136
 137         if (regions.size() == 1) {
 138                 switch (snap_type) {
 139                 case SnapToRegionStart:
 140                 case SnapToRegionSync:
 141                 case SnapToRegionEnd:
 142                         break;
 143                 default:
 144                         snap_to (where);
 145                 }
 146         } else {
 147                 snap_to (where);
 148         }
 149
 150         cerr << "Split " << regions.size() << " at " << where << endl;
 151
 152         for (RegionSelection::iterator a = regions.begin(); a != regions.end(); ) {
 153
 154                 RegionSelection::iterator tmp;
 155
 156                 /* XXX this test needs to be more complicated, to make sure we really
 157                    have something to split.
 158                 */
 159
 160                 if (!(*a)->region()->covers (where)) {
 161                         ++a;
 162                         continue;
 163                 }
 164
 165                 tmp = a;
 166                 ++tmp;
 167
 168                 boost::shared_ptr<Playlist> pl = (*a)->region()->playlist();
 169
 170                 if (! pl->frozen()) {
 171                         /* we haven't seen this playlist before */
 172
 173                         /* remember used playlists so we can thaw them later */
 174                         used_playlists.push_back(pl);
 175                         pl->freeze();
 176                 }
 177
 178                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*a);
 179
 180                 if (arv) {
 181                         _new_regionviews_show_envelope = arv->envelope_visible();
 182                 }
 183
 184                 if (pl) {
 185                         XMLNode &before = pl->get_state();
 186                         pl->split_region ((*a)->region(), where);
 187                         XMLNode &after = pl->get_state();
 188                         session->add_command(new MementoCommand<Playlist>(*pl, &before, &after));
 189                 }
 190
 191                 a = tmp;
 192         }
 193         while (used_playlists.size() > 0) {
 194
 195                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
 196                 (*i)->thaw();
 197                 used_playlists.pop_front();
 198         }
 199         commit_reversible_command ();
 200         _new_regionviews_show_envelope = false;
 201 }
 202
 203
 204 /** Remove `clicked_regionview' */
 205 void
 206 Editor::remove_clicked_region ()
 207 {
 208         if (clicked_routeview == 0 || clicked_regionview == 0) {
 209                 return;
 210         }
 211
 212         boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
 213
 214         begin_reversible_command (_("remove region"));
 215         XMLNode &before = playlist->get_state();
 216         playlist->remove_region (clicked_regionview->region());
 217         XMLNode &after = playlist->get_state();
 218         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 219         commit_reversible_command ();
 220 }
 221
 222
 223 /** Remove the selected regions */
 224 void
 225 Editor::remove_selected_regions ()
 226 {
 227         RegionSelection rs;
 228         get_regions_for_action (rs);
 229
 230         if (!session) {
 231                 return;
 232         }
 233
 234         if (rs.empty()) {
 235                 return;
 236         }
 237
 238         begin_reversible_command (_("remove region"));
 239
 240         list<boost::shared_ptr<Region> > regions_to_remove;
 241
 242         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 243                 // we can't just remove the region(s) in this loop because
 244                 // this removes them from the RegionSelection, and they thus
 245                 // disappear from underneath the iterator, and the ++i above
 246                 // SEGVs in a puzzling fashion.
 247
 248                 // so, first iterate over the regions to be removed from rs and
 249                 // add them to the regions_to_remove list, and then
 250                 // iterate over the list to actually remove them.
 251
 252                 regions_to_remove.push_back ((*i)->region());
 253         }
 254
 255         for (list<boost::shared_ptr<Region> >::iterator rl = regions_to_remove.begin(); rl != regions_to_remove.end(); ++rl) {
 256                 boost::shared_ptr<Playlist> playlist = (*rl)->playlist();
 257                 if (!playlist) {
 258                         // is this check necessary?
 259                         continue;
 260                 }
 261
 262                 XMLNode &before = playlist->get_state();
 263                 playlist->remove_region (*rl);
 264                 XMLNode &after = playlist->get_state();
 265                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 266         }
 267
 268         commit_reversible_command ();
 269 }
 270
 271 boost::shared_ptr<Region>
 272 Editor::select_region_for_operation (int dir, TimeAxisView **tv)
 273 {
 274         RegionView* rv;
 275         boost::shared_ptr<Region> region;
 276         nframes64_t start = 0;
 277
 278         if (selection->time.start () == selection->time.end_frame ()) {
 279
 280                 /* no current selection-> is there a selected regionview? */
 281
 282                 if (selection->regions.empty()) {
 283                         return region;
 284                 }
 285
 286         }
 287
 288         if (!selection->regions.empty()) {
 289
 290                 rv = *(selection->regions.begin());
 291                 (*tv) = &rv->get_time_axis_view();
 292                 region = rv->region();
 293
 294         } else if (!selection->tracks.empty()) {
 295
 296                 (*tv) = selection->tracks.front();
 297
 298                 RouteTimeAxisView* rtv;
 299
 300                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*tv)) != 0) {
 301                         boost::shared_ptr<Playlist> pl;
 302
 303                         if ((pl = rtv->playlist()) == 0) {
 304                                 return region;
 305                         }
 306
 307                         region = pl->top_region_at (start);
 308                 }
 309         }
 310
 311         return region;
 312 }
 313
 314 void
 315 Editor::extend_selection_to_end_of_region (bool next)
 316 {
 317         TimeAxisView *tv;
 318         boost::shared_ptr<Region> region;
 319         nframes64_t start;
 320
 321         if ((region = select_region_for_operation (next ? 1 : 0, &tv)) == 0) {
 322                 return;
 323         }
 324
 325         if (region && selection->time.start () == selection->time.end_frame ()) {
 326                 start = region->position();
 327         } else {
 328                 start = selection->time.start ();
 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, start, region->position() + region->length());
 339         commit_reversible_command ();
 340 }
 341
 342 void
 343 Editor::extend_selection_to_start_of_region (bool previous)
 344 {
 345         TimeAxisView *tv;
 346         boost::shared_ptr<Region> region;
 347         nframes64_t end;
 348
 349         if ((region = select_region_for_operation (previous ? -1 : 0, &tv)) == 0) {
 350                 return;
 351         }
 352
 353         if (region && selection->time.start () == selection->time.end_frame ()) {
 354                 end = region->position() + region->length();
 355         } else {
 356                 end = selection->time.end_frame ();
 357         }
 358
 359         /* Try to leave the selection with the same route if possible */
 360
 361         if ((tv = selection->time.track) == 0) {
 362                 return;
 363         }
 364
 365         begin_reversible_command (_("extend selection"));
 366         selection->set (tv, region->position(), end);
 367         commit_reversible_command ();
 368 }
 369
 370 bool
 371 Editor::nudge_forward_release (GdkEventButton* ev)
 372 {
 373         if (ev->state & Keyboard::PrimaryModifier) {
 374                 nudge_forward (false, true);
 375         } else {
 376                 nudge_forward (false, false);
 377         }
 378         return false;
 379 }
 380
 381 bool
 382 Editor::nudge_backward_release (GdkEventButton* ev)
 383 {
 384         if (ev->state & Keyboard::PrimaryModifier) {
 385                 nudge_backward (false, true);
 386         } else {
 387                 nudge_backward (false, false);
 388         }
 389         return false;
 390 }
 391
 392
 393 void
 394 Editor::nudge_forward (bool next, bool force_playhead)
 395 {
 396         nframes64_t distance;
 397         nframes64_t next_distance;
 398         RegionSelection rs;
 399
 400         get_regions_for_action (rs);
 401
 402         if (!session) return;
 403
 404         if (!force_playhead && !rs.empty()) {
 405
 406                 begin_reversible_command (_("nudge regions forward"));
 407
 408                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 409                         boost::shared_ptr<Region> r ((*i)->region());
 410
 411                         distance = get_nudge_distance (r->position(), next_distance);
 412
 413                         if (next) {
 414                                 distance = next_distance;
 415                         }
 416
 417                         XMLNode &before = r->playlist()->get_state();
 418                         r->set_position (r->position() + distance, this);
 419                         XMLNode &after = r->playlist()->get_state();
 420                         session->add_command (new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 421                 }
 422
 423                 commit_reversible_command ();
 424
 425
 426         } else if (!force_playhead && !selection->markers.empty()) {
 427
 428                 bool is_start;
 429
 430                 begin_reversible_command (_("nudge location forward"));
 431
 432                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 433
 434                         Location* loc = find_location_from_marker ((*i), is_start);
 435
 436                         if (loc) {
 437
 438                                 XMLNode& before (loc->get_state());
 439
 440                                 if (is_start) {
 441                                         distance = get_nudge_distance (loc->start(), next_distance);
 442                                         if (next) {
 443                                                 distance = next_distance;
 444                                         }
 445                                         if (max_frames - distance > loc->start() + loc->length()) {
 446                                                 loc->set_start (loc->start() + distance);
 447                                         } else {
 448                                                 loc->set_start (max_frames - loc->length());
 449                                         }
 450                                 } else {
 451                                         distance = get_nudge_distance (loc->end(), next_distance);
 452                                         if (next) {
 453                                                 distance = next_distance;
 454                                         }
 455                                         if (max_frames - distance > loc->end()) {
 456                                                 loc->set_end (loc->end() + distance);
 457                                         } else {
 458                                                 loc->set_end (max_frames);
 459                                         }
 460                                 }
 461                                 XMLNode& after (loc->get_state());
 462                                 session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 463                         }
 464                 }
 465
 466                 commit_reversible_command ();
 467
 468         } else {
 469                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 470                 session->request_locate (playhead_cursor->current_frame + distance);
 471         }
 472 }
 473
 474 void
 475 Editor::nudge_backward (bool next, bool force_playhead)
 476 {
 477         nframes64_t distance;
 478         nframes64_t next_distance;
 479         RegionSelection rs;
 480
 481         get_regions_for_action (rs);
 482
 483         if (!session) return;
 484
 485         if (!force_playhead && !rs.empty()) {
 486
 487                 begin_reversible_command (_("nudge regions backward"));
 488
 489                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 490                         boost::shared_ptr<Region> r ((*i)->region());
 491
 492                         distance = get_nudge_distance (r->position(), next_distance);
 493
 494                         if (next) {
 495                                 distance = next_distance;
 496                         }
 497
 498                         XMLNode &before = r->playlist()->get_state();
 499
 500                         if (r->position() > distance) {
 501                                 r->set_position (r->position() - distance, this);
 502                         } else {
 503                                 r->set_position (0, this);
 504                         }
 505                         XMLNode &after = r->playlist()->get_state();
 506                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 507                 }
 508
 509                 commit_reversible_command ();
 510
 511         } else if (!force_playhead && !selection->markers.empty()) {
 512
 513                 bool is_start;
 514
 515                 begin_reversible_command (_("nudge location forward"));
 516
 517                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 518
 519                         Location* loc = find_location_from_marker ((*i), is_start);
 520
 521                         if (loc) {
 522
 523                                 XMLNode& before (loc->get_state());
 524
 525                                 if (is_start) {
 526                                         distance = get_nudge_distance (loc->start(), next_distance);
 527                                         if (next) {
 528                                                 distance = next_distance;
 529                                         }
 530                                         if (distance < loc->start()) {
 531                                                 loc->set_start (loc->start() - distance);
 532                                         } else {
 533                                                 loc->set_start (0);
 534                                         }
 535                                 } else {
 536                                         distance = get_nudge_distance (loc->end(), next_distance);
 537
 538                                         if (next) {
 539                                                 distance = next_distance;
 540                                         }
 541
 542                                         if (distance < loc->end() - loc->length()) {
 543                                                 loc->set_end (loc->end() - distance);
 544                                         } else {
 545                                                 loc->set_end (loc->length());
 546                                         }
 547                                 }
 548
 549                                 XMLNode& after (loc->get_state());
 550                                 session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 551                         }
 552                 }
 553
 554                 commit_reversible_command ();
 555
 556         } else {
 557
 558                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 559
 560                 if (playhead_cursor->current_frame > distance) {
 561                         session->request_locate (playhead_cursor->current_frame - distance);
 562                 } else {
 563                         session->goto_start();
 564                 }
 565         }
 566 }
 567
 568 void
 569 Editor::nudge_forward_capture_offset ()
 570 {
 571         nframes64_t distance;
 572         RegionSelection rs;
 573
 574         get_regions_for_action (rs);
 575
 576         if (!session) return;
 577
 578         if (!rs.empty()) {
 579
 580                 begin_reversible_command (_("nudge forward"));
 581
 582                 distance = session->worst_output_latency();
 583
 584                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 585                         boost::shared_ptr<Region> r ((*i)->region());
 586
 587                         XMLNode &before = r->playlist()->get_state();
 588                         r->set_position (r->position() + distance, this);
 589                         XMLNode &after = r->playlist()->get_state();
 590                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 591                 }
 592
 593                 commit_reversible_command ();
 594
 595         }
 596 }
 597
 598 void
 599 Editor::nudge_backward_capture_offset ()
 600 {
 601         nframes64_t distance;
 602         RegionSelection rs;
 603
 604         get_regions_for_action (rs);
 605
 606         if (!session) return;
 607
 608         if (!rs.empty()) {
 609
 610                 begin_reversible_command (_("nudge forward"));
 611
 612                 distance = session->worst_output_latency();
 613
 614                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 615                         boost::shared_ptr<Region> r ((*i)->region());
 616
 617                         XMLNode &before = r->playlist()->get_state();
 618
 619                         if (r->position() > distance) {
 620                                 r->set_position (r->position() - distance, this);
 621                         } else {
 622                                 r->set_position (0, this);
 623                         }
 624                         XMLNode &after = r->playlist()->get_state();
 625                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 626                 }
 627
 628                 commit_reversible_command ();
 629         }
 630 }
 631
 632 /* DISPLAY MOTION */
 633
 634 void
 635 Editor::move_to_start ()
 636 {
 637         session->goto_start ();
 638 }
 639
 640 void
 641 Editor::move_to_end ()
 642 {
 643
 644         session->request_locate (session->current_end_frame());
 645 }
 646
 647 void
 648 Editor::build_region_boundary_cache ()
 649 {
 650         nframes64_t pos = 0;
 651         vector<RegionPoint> interesting_points;
 652         boost::shared_ptr<Region> r;
 653         TrackViewList tracks;
 654         bool at_end = false;
 655
 656         region_boundary_cache.clear ();
 657
 658         if (session == 0) {
 659                 return;
 660         }
 661
 662         switch (snap_type) {
 663         case SnapToRegionStart:
 664                 interesting_points.push_back (Start);
 665                 break;
 666         case SnapToRegionEnd:
 667                 interesting_points.push_back (End);
 668                 break;
 669         case SnapToRegionSync:
 670                 interesting_points.push_back (SyncPoint);
 671                 break;
 672         case SnapToRegionBoundary:
 673                 interesting_points.push_back (Start);
 674                 interesting_points.push_back (End);
 675                 break;
 676         default:
 677                 fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), snap_type) << endmsg;
 678                 /*NOTREACHED*/
 679                 return;
 680         }
 681
 682         TimeAxisView *ontrack = 0;
 683         TrackViewList tlist;
 684
 685         if (!selection->tracks.empty()) {
 686                 tlist = selection->tracks;
 687         } else {
 688                 tlist = track_views;
 689         }
 690
 691         while (pos < session->current_end_frame() && !at_end) {
 692
 693                 nframes64_t rpos;
 694                 nframes64_t lpos = max_frames;
 695
 696                 for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 697
 698                         if ((r = find_next_region (pos, *p, 1, tlist, &ontrack)) == 0) {
 699                                 if (*p == interesting_points.back()) {
 700                                         at_end = true;
 701                                 }
 702                                 /* move to next point type */
 703                                 continue;
 704                         }
 705
 706                         switch (*p) {
 707                         case Start:
 708                                 rpos = r->first_frame();
 709                                 break;
 710
 711                         case End:
 712                                 rpos = r->last_frame();
 713                                 break;
 714
 715                         case SyncPoint:
 716                                 rpos = r->adjust_to_sync (r->first_frame());
 717                                 break;
 718
 719                         default:
 720                                 break;
 721                         }
 722
 723                         float speed = 1.0f;
 724                         RouteTimeAxisView *rtav;
 725
 726                         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 727                                 if (rtav->get_diskstream() != 0) {
 728                                         speed = rtav->get_diskstream()->speed();
 729                                 }
 730                         }
 731
 732                         rpos = track_frame_to_session_frame (rpos, speed);
 733
 734                         if (rpos < lpos) {
 735                                 lpos = rpos;
 736                         }
 737
 738                         /* prevent duplicates, but we don't use set<> because we want to be able
 739                            to sort later.
 740                         */
 741
 742                         vector<nframes64_t>::iterator ri;
 743
 744                         for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
 745                                 if (*ri == rpos) {
 746                                         break;
 747                                 }
 748                         }
 749
 750                         if (ri == region_boundary_cache.end()) {
 751                                 region_boundary_cache.push_back (rpos);
 752                         }
 753                 }
 754
 755                 pos = lpos + 1;
 756         }
 757
 758         /* finally sort to be sure that the order is correct */
 759
 760         sort (region_boundary_cache.begin(), region_boundary_cache.end());
 761 }
 762
 763 boost::shared_ptr<Region>
 764 Editor::find_next_region (nframes64_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 765 {
 766         TrackViewList::iterator i;
 767         nframes64_t closest = max_frames;
 768         boost::shared_ptr<Region> ret;
 769         nframes64_t rpos = 0;
 770
 771         float track_speed;
 772         nframes64_t track_frame;
 773         RouteTimeAxisView *rtav;
 774
 775         for (i = tracks.begin(); i != tracks.end(); ++i) {
 776
 777                 nframes64_t distance;
 778                 boost::shared_ptr<Region> r;
 779
 780                 track_speed = 1.0f;
 781                 if ( (rtav = dynamic_cast<RouteTimeAxisView*>(*i)) != 0 ) {
 782                         if (rtav->get_diskstream()!=0)
 783                                 track_speed = rtav->get_diskstream()->speed();
 784                 }
 785
 786                 track_frame = session_frame_to_track_frame(frame, track_speed);
 787
 788                 if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
 789                         continue;
 790                 }
 791
 792                 switch (point) {
 793                 case Start:
 794                         rpos = r->first_frame ();
 795                         break;
 796
 797                 case End:
 798                         rpos = r->last_frame ();
 799                         break;
 800
 801                 case SyncPoint:
 802                         rpos = r->adjust_to_sync (r->first_frame());
 803                         break;
 804                 }
 805
 806                 // rpos is a "track frame", converting it to "session frame"
 807                 rpos = track_frame_to_session_frame(rpos, track_speed);
 808
 809                 if (rpos > frame) {
 810                         distance = rpos - frame;
 811                 } else {
 812                         distance = frame - rpos;
 813                 }
 814
 815                 if (distance < closest) {
 816                         closest = distance;
 817                         if (ontrack != 0)
 818                                 *ontrack = (*i);
 819                         ret = r;
 820                 }
 821         }
 822
 823         return ret;
 824 }
 825
 826 nframes64_t
 827 Editor::find_next_region_boundary (nframes64_t pos, int32_t dir, const TrackViewList& tracks)
 828 {
 829         nframes64_t distance = max_frames;
 830         nframes64_t current_nearest = -1;
 831
 832         for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
 833                 nframes64_t contender;
 834                 nframes64_t d;
 835
 836                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 837
 838                 if (!rtv) {
 839                         continue;
 840                 }
 841
 842                 if ((contender = rtv->find_next_region_boundary (pos, dir)) < 0) {
 843                         continue;
 844                 }
 845
 846                 d = ::llabs (pos - contender);
 847
 848                 if (d < distance) {
 849                         current_nearest = contender;
 850                         distance = d;
 851                 }
 852         }
 853
 854         return current_nearest;
 855 }
 856
 857 void
 858 Editor::cursor_to_region_boundary (Cursor* cursor, int32_t dir)
 859 {
 860         nframes64_t pos = cursor->current_frame;
 861         nframes64_t target;
 862
 863         if (!session) {
 864                 return;
 865         }
 866
 867         // so we don't find the current region again..
 868         if (dir > 0 || pos > 0) {
 869                 pos += dir;
 870         }
 871
 872         if (!selection->tracks.empty()) {
 873
 874                 target = find_next_region_boundary (pos, dir, selection->tracks);
 875
 876         } else {
 877
 878                 target = find_next_region_boundary (pos, dir, track_views);
 879         }
 880
 881         if (target < 0) {
 882                 return;
 883         }
 884
 885
 886         if (cursor == playhead_cursor) {
 887                 session->request_locate (target);
 888         } else {
 889                 cursor->set_position (target);
 890         }
 891 }
 892
 893 void
 894 Editor::cursor_to_next_region_boundary (Cursor* cursor)
 895 {
 896         cursor_to_region_boundary (cursor, 1);
 897 }
 898
 899 void
 900 Editor::cursor_to_previous_region_boundary (Cursor* cursor)
 901 {
 902         cursor_to_region_boundary (cursor, -1);
 903 }
 904
 905 void
 906 Editor::cursor_to_region_point (Cursor* cursor, RegionPoint point, int32_t dir)
 907 {
 908         boost::shared_ptr<Region> r;
 909         nframes64_t pos = cursor->current_frame;
 910
 911         if (!session) {
 912                 return;
 913         }
 914
 915         TimeAxisView *ontrack = 0;
 916
 917         // so we don't find the current region again..
 918         if (dir>0 || pos>0)
 919                 pos+=dir;
 920
 921         if (!selection->tracks.empty()) {
 922
 923                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
 924
 925         } else if (clicked_axisview) {
 926
 927                 TrackViewList t;
 928                 t.push_back (clicked_axisview);
 929
 930                 r = find_next_region (pos, point, dir, t, &ontrack);
 931
 932         } else {
 933
 934                 r = find_next_region (pos, point, dir, track_views, &ontrack);
 935         }
 936
 937         if (r == 0) {
 938                 return;
 939         }
 940
 941         switch (point){
 942         case Start:
 943                 pos = r->first_frame ();
 944                 break;
 945
 946         case End:
 947                 pos = r->last_frame ();
 948                 break;
 949
 950         case SyncPoint:
 951                 pos = r->adjust_to_sync (r->first_frame());
 952                 break;
 953         }
 954
 955         float speed = 1.0f;
 956         RouteTimeAxisView *rtav;
 957
 958         if ( ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 959                 if (rtav->get_diskstream() != 0) {
 960                         speed = rtav->get_diskstream()->speed();
 961                 }
 962         }
 963
 964         pos = track_frame_to_session_frame(pos, speed);
 965
 966         if (cursor == playhead_cursor) {
 967                 session->request_locate (pos);
 968         } else {
 969                 cursor->set_position (pos);
 970         }
 971 }
 972
 973 void
 974 Editor::cursor_to_next_region_point (Cursor* cursor, RegionPoint point)
 975 {
 976         cursor_to_region_point (cursor, point, 1);
 977 }
 978
 979 void
 980 Editor::cursor_to_previous_region_point (Cursor* cursor, RegionPoint point)
 981 {
 982         cursor_to_region_point (cursor, point, -1);
 983 }
 984
 985 void
 986 Editor::cursor_to_selection_start (Cursor *cursor)
 987 {
 988         nframes64_t pos = 0;
 989         RegionSelection rs;
 990
 991         get_regions_for_action (rs);
 992
 993         switch (mouse_mode) {
 994         case MouseObject:
 995                 if (!rs.empty()) {
 996                         pos = rs.start();
 997                 }
 998                 break;
 999
1000         case MouseRange:
1001                 if (!selection->time.empty()) {
1002                         pos = selection->time.start ();
1003                 }
1004                 break;
1005
1006         default:
1007                 return;
1008         }
1009
1010         if (cursor == playhead_cursor) {
1011                 session->request_locate (pos);
1012         } else {
1013                 cursor->set_position (pos);
1014         }
1015 }
1016
1017 void
1018 Editor::cursor_to_selection_end (Cursor *cursor)
1019 {
1020         nframes64_t pos = 0;
1021         RegionSelection rs;
1022
1023         get_regions_for_action (rs);
1024
1025         switch (mouse_mode) {
1026         case MouseObject:
1027                 if (!rs.empty()) {
1028                         pos = rs.end_frame();
1029                 }
1030                 break;
1031
1032         case MouseRange:
1033                 if (!selection->time.empty()) {
1034                         pos = selection->time.end_frame ();
1035                 }
1036                 break;
1037
1038         default:
1039                 return;
1040         }
1041
1042         if (cursor == playhead_cursor) {
1043                 session->request_locate (pos);
1044         } else {
1045                 cursor->set_position (pos);
1046         }
1047 }
1048
1049 void
1050 Editor::selected_marker_to_region_boundary (int32_t dir)
1051 {
1052         nframes64_t target;
1053         Location* loc;
1054         bool ignored;
1055
1056         if (!session) {
1057                 return;
1058         }
1059
1060         if (selection->markers.empty()) {
1061                 nframes64_t mouse;
1062                 bool ignored;
1063
1064                 if (!mouse_frame (mouse, ignored)) {
1065                         return;
1066                 }
1067
1068                 add_location_mark (mouse);
1069         }
1070
1071         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1072                 return;
1073         }
1074
1075         nframes64_t pos = loc->start();
1076
1077         // so we don't find the current region again..
1078         if (dir > 0 || pos > 0) {
1079                 pos += dir;
1080         }
1081
1082         if (!selection->tracks.empty()) {
1083
1084                 target = find_next_region_boundary (pos, dir, selection->tracks);
1085
1086         } else {
1087
1088                 target = find_next_region_boundary (pos, dir, track_views);
1089         }
1090
1091         if (target < 0) {
1092                 return;
1093         }
1094
1095         loc->move_to (target);
1096 }
1097
1098 void
1099 Editor::selected_marker_to_next_region_boundary ()
1100 {
1101         selected_marker_to_region_boundary (1);
1102 }
1103
1104 void
1105 Editor::selected_marker_to_previous_region_boundary ()
1106 {
1107         selected_marker_to_region_boundary (-1);
1108 }
1109
1110 void
1111 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
1112 {
1113         boost::shared_ptr<Region> r;
1114         nframes64_t pos;
1115         Location* loc;
1116         bool ignored;
1117
1118         if (!session || selection->markers.empty()) {
1119                 return;
1120         }
1121
1122         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1123                 return;
1124         }
1125
1126         TimeAxisView *ontrack = 0;
1127
1128         pos = loc->start();
1129
1130         // so we don't find the current region again..
1131         if (dir>0 || pos>0)
1132                 pos+=dir;
1133
1134         if (!selection->tracks.empty()) {
1135
1136                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1137
1138         } else {
1139
1140                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1141         }
1142
1143         if (r == 0) {
1144                 return;
1145         }
1146
1147         switch (point){
1148         case Start:
1149                 pos = r->first_frame ();
1150                 break;
1151
1152         case End:
1153                 pos = r->last_frame ();
1154                 break;
1155
1156         case SyncPoint:
1157                 pos = r->adjust_to_sync (r->first_frame());
1158                 break;
1159         }
1160
1161         float speed = 1.0f;
1162         AudioTimeAxisView *atav;
1163
1164         if ( ontrack != 0 && (atav = dynamic_cast<AudioTimeAxisView*>(ontrack)) != 0 ) {
1165                 if (atav->get_diskstream() != 0) {
1166                         speed = atav->get_diskstream()->speed();
1167                 }
1168         }
1169
1170         pos = track_frame_to_session_frame(pos, speed);
1171
1172         loc->move_to (pos);
1173 }
1174
1175 void
1176 Editor::selected_marker_to_next_region_point (RegionPoint point)
1177 {
1178         selected_marker_to_region_point (point, 1);
1179 }
1180
1181 void
1182 Editor::selected_marker_to_previous_region_point (RegionPoint point)
1183 {
1184         selected_marker_to_region_point (point, -1);
1185 }
1186
1187 void
1188 Editor::selected_marker_to_selection_start ()
1189 {
1190         nframes64_t pos = 0;
1191         Location* loc;
1192         bool ignored;
1193
1194         if (!session || selection->markers.empty()) {
1195                 return;
1196         }
1197
1198         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1199                 return;
1200         }
1201
1202         RegionSelection rs;
1203
1204         get_regions_for_action (rs);
1205
1206         switch (mouse_mode) {
1207         case MouseObject:
1208                 if (!rs.empty()) {
1209                         pos = rs.start();
1210                 }
1211                 break;
1212
1213         case MouseRange:
1214                 if (!selection->time.empty()) {
1215                         pos = selection->time.start ();
1216                 }
1217                 break;
1218
1219         default:
1220                 return;
1221         }
1222
1223         loc->move_to (pos);
1224 }
1225
1226 void
1227 Editor::selected_marker_to_selection_end ()
1228 {
1229         nframes64_t pos = 0;
1230         Location* loc;
1231         bool ignored;
1232
1233         if (!session || selection->markers.empty()) {
1234                 return;
1235         }
1236
1237         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1238                 return;
1239         }
1240
1241         RegionSelection rs;
1242
1243         get_regions_for_action (rs);
1244
1245         switch (mouse_mode) {
1246         case MouseObject:
1247                 if (!rs.empty()) {
1248                         pos = rs.end_frame();
1249                 }
1250                 break;
1251
1252         case MouseRange:
1253                 if (!selection->time.empty()) {
1254                         pos = selection->time.end_frame ();
1255                 }
1256                 break;
1257
1258         default:
1259                 return;
1260         }
1261
1262         loc->move_to (pos);
1263 }
1264
1265 void
1266 Editor::scroll_playhead (bool forward)
1267 {
1268         nframes64_t pos = playhead_cursor->current_frame;
1269         nframes64_t delta = (nframes64_t) floor (current_page_frames() / 0.8);
1270
1271         if (forward) {
1272                 if (pos == max_frames) {
1273                         return;
1274                 }
1275
1276                 if (pos < max_frames - delta) {
1277                         pos += delta ;
1278                 } else {
1279                         pos = max_frames;
1280                 }
1281
1282         } else {
1283
1284                 if (pos == 0) {
1285                         return;
1286                 }
1287
1288                 if (pos > delta) {
1289                         pos -= delta;
1290                 } else {
1291                         pos = 0;
1292                 }
1293         }
1294
1295         session->request_locate (pos);
1296 }
1297
1298 void
1299 Editor::playhead_backward ()
1300 {
1301         nframes64_t pos;
1302         nframes64_t cnt;
1303         float prefix;
1304         bool was_floating;
1305
1306         if (get_prefix (prefix, was_floating)) {
1307                 cnt = 1;
1308         } else {
1309                 if (was_floating) {
1310                         cnt = (nframes64_t) floor (prefix * session->frame_rate ());
1311                 } else {
1312                         cnt = (nframes64_t) prefix;
1313                 }
1314         }
1315
1316         pos = playhead_cursor->current_frame;
1317
1318         if ((nframes64_t) pos < cnt) {
1319                 pos = 0;
1320         } else {
1321                 pos -= cnt;
1322         }
1323
1324         /* XXX this is completely insane. with the current buffering
1325            design, we'll force a complete track buffer flush and
1326            reload, just to move 1 sample !!!
1327         */
1328
1329         session->request_locate (pos);
1330 }
1331
1332 void
1333 Editor::playhead_forward ()
1334 {
1335         nframes64_t pos;
1336         nframes64_t cnt;
1337         bool was_floating;
1338         float prefix;
1339
1340         if (get_prefix (prefix, was_floating)) {
1341                 cnt = 1;
1342         } else {
1343                 if (was_floating) {
1344                         cnt = (nframes64_t) floor (prefix * session->frame_rate ());
1345                 } else {
1346                         cnt = (nframes64_t) floor (prefix);
1347                 }
1348         }
1349
1350         pos = playhead_cursor->current_frame;
1351
1352         /* XXX this is completely insane. with the current buffering
1353            design, we'll force a complete track buffer flush and
1354            reload, just to move 1 sample !!!
1355         */
1356
1357         session->request_locate (pos+cnt);
1358 }
1359
1360 void
1361 Editor::cursor_align (bool playhead_to_edit)
1362 {
1363         if (!session) {
1364                 return;
1365         }
1366
1367         if (playhead_to_edit) {
1368
1369                 if (selection->markers.empty()) {
1370                         return;
1371                 }
1372
1373                 session->request_locate (selection->markers.front()->position(), session->transport_rolling());
1374
1375         } else {
1376                 /* move selected markers to playhead */
1377
1378                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
1379                         bool ignored;
1380
1381                         Location* loc = find_location_from_marker (*i, ignored);
1382
1383                         if (loc->is_mark()) {
1384                                 loc->set_start (playhead_cursor->current_frame);
1385                         } else {
1386                                 loc->set (playhead_cursor->current_frame,
1387                                           playhead_cursor->current_frame + loc->length());
1388                         }
1389                 }
1390         }
1391 }
1392
1393 void
1394 Editor::edit_cursor_backward ()
1395 {
1396         nframes64_t pos;
1397         nframes64_t cnt;
1398         float prefix;
1399         bool was_floating;
1400
1401         if (get_prefix (prefix, was_floating)) {
1402                 cnt = 1;
1403         } else {
1404                 if (was_floating) {
1405                         cnt = (nframes64_t) floor (prefix * session->frame_rate ());
1406                 } else {
1407                         cnt = (nframes64_t) prefix;
1408                 }
1409         }
1410
1411         if ((pos = get_preferred_edit_position()) < 0) {
1412                 return;
1413         }
1414
1415         if (pos < cnt) {
1416                 pos = 0;
1417         } else {
1418                 pos -= cnt;
1419         }
1420
1421         // EDIT CURSOR edit_cursor->set_position (pos);
1422 }
1423
1424 void
1425 Editor::edit_cursor_forward ()
1426 {
1427         //nframes64_t pos;
1428         nframes64_t cnt;
1429         bool was_floating;
1430         float prefix;
1431
1432         if (get_prefix (prefix, was_floating)) {
1433                 cnt = 1;
1434         } else {
1435                 if (was_floating) {
1436                         cnt = (nframes64_t) floor (prefix * session->frame_rate ());
1437                 } else {
1438                         cnt = (nframes64_t) floor (prefix);
1439                 }
1440         }
1441
1442         // pos = edit_cursor->current_frame;
1443         // EDIT CURSOR edit_cursor->set_position (pos+cnt);
1444 }
1445
1446 void
1447 Editor::goto_frame ()
1448 {
1449         float prefix;
1450         bool was_floating;
1451         nframes64_t frame;
1452
1453         if (get_prefix (prefix, was_floating)) {
1454                 return;
1455         }
1456
1457         if (was_floating) {
1458                 frame = (nframes64_t) floor (prefix * session->frame_rate());
1459         } else {
1460                 frame = (nframes64_t) floor (prefix);
1461         }
1462
1463         session->request_locate (frame);
1464 }
1465
1466 void
1467 Editor::scroll_backward (float pages)
1468 {
1469         nframes64_t frame;
1470         nframes64_t one_page = (nframes64_t) rint (canvas_width * frames_per_unit);
1471         bool was_floating;
1472         float prefix;
1473         nframes64_t cnt;
1474
1475         if (get_prefix (prefix, was_floating)) {
1476                 cnt = (nframes64_t) floor (pages * one_page);
1477         } else {
1478                 if (was_floating) {
1479                         cnt = (nframes64_t) floor (prefix * session->frame_rate());
1480                 } else {
1481                         cnt = (nframes64_t) floor (prefix * one_page);
1482                 }
1483         }
1484
1485         if (leftmost_frame < cnt) {
1486                 frame = 0;
1487         } else {
1488                 frame = leftmost_frame - cnt;
1489         }
1490
1491         reset_x_origin (frame);
1492 }
1493
1494 void
1495 Editor::scroll_forward (float pages)
1496 {
1497         nframes64_t frame;
1498         nframes64_t one_page = (nframes64_t) rint (canvas_width * frames_per_unit);
1499         bool was_floating;
1500         float prefix;
1501         nframes64_t cnt;
1502
1503         if (get_prefix (prefix, was_floating)) {
1504                 cnt = (nframes64_t) floor (pages * one_page);
1505         } else {
1506                 if (was_floating) {
1507                         cnt = (nframes64_t) floor (prefix * session->frame_rate());
1508                 } else {
1509                         cnt = (nframes64_t) floor (prefix * one_page);
1510                 }
1511         }
1512
1513         if (max_frames - cnt < leftmost_frame) {
1514                 frame = max_frames - cnt;
1515         } else {
1516                 frame = leftmost_frame + cnt;
1517         }
1518
1519         reset_x_origin (frame);
1520 }
1521
1522 void
1523 Editor::scroll_tracks_down ()
1524 {
1525         float prefix;
1526         bool was_floating;
1527         int cnt;
1528
1529         if (get_prefix (prefix, was_floating)) {
1530                 cnt = 1;
1531         } else {
1532                 cnt = (int) floor (prefix);
1533         }
1534
1535         double vert_value = vertical_adjustment.get_value() + (cnt *
1536                 vertical_adjustment.get_page_size());
1537         if (vert_value > vertical_adjustment.get_upper() - canvas_height) {
1538                 vert_value = vertical_adjustment.get_upper() - canvas_height;
1539         }
1540         vertical_adjustment.set_value (vert_value);
1541 }
1542
1543 void
1544 Editor::scroll_tracks_up ()
1545 {
1546         float prefix;
1547         bool was_floating;
1548         int cnt;
1549
1550         if (get_prefix (prefix, was_floating)) {
1551                 cnt = 1;
1552         } else {
1553                 cnt = (int) floor (prefix);
1554         }
1555
1556         vertical_adjustment.set_value (vertical_adjustment.get_value() - (cnt * vertical_adjustment.get_page_size()));
1557 }
1558
1559 void
1560 Editor::scroll_tracks_down_line ()
1561 {
1562
1563         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1564         double vert_value = adj->get_value() + 60;
1565
1566         if (vert_value>adj->get_upper() - canvas_height) {
1567                 vert_value = adj->get_upper() - canvas_height;
1568         }
1569         adj->set_value (vert_value);
1570 }
1571
1572 void
1573 Editor::scroll_tracks_up_line ()
1574 {
1575         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1576         adj->set_value (adj->get_value() - 60);
1577 }
1578
1579 /* ZOOM */
1580
1581 void
1582 Editor::temporal_zoom_step (bool coarser)
1583 {
1584         ENSURE_GUI_THREAD (bind (mem_fun (*this, &Editor::temporal_zoom_step), coarser));
1585
1586         double nfpu;
1587
1588         nfpu = frames_per_unit;
1589
1590         if (coarser) {
1591                 nfpu *= 1.61803399;
1592         } else {
1593                 nfpu = max(1.0,(nfpu/1.61803399));
1594         }
1595
1596         temporal_zoom (nfpu);
1597 }
1598
1599 void
1600 Editor::temporal_zoom (gdouble fpu)
1601 {
1602         if (!session) return;
1603
1604         nframes64_t current_page = current_page_frames();
1605         nframes64_t current_leftmost = leftmost_frame;
1606         nframes64_t current_rightmost;
1607         nframes64_t current_center;
1608         nframes64_t new_page_size;
1609         nframes64_t half_page_size;
1610         nframes64_t leftmost_after_zoom = 0;
1611         nframes64_t where;
1612         bool in_track_canvas;
1613         double nfpu;
1614         double l;
1615
1616         /* XXX this limit is also in ::set_frames_per_unit() */
1617
1618         if (frames_per_unit <= 2.0 && fpu <= frames_per_unit) {
1619                 return;
1620         }
1621
1622         nfpu = fpu;
1623
1624         new_page_size = (nframes64_t) floor (canvas_width * nfpu);
1625         half_page_size = new_page_size / 2;
1626
1627         switch (zoom_focus) {
1628         case ZoomFocusLeft:
1629                 leftmost_after_zoom = current_leftmost;
1630                 break;
1631
1632         case ZoomFocusRight:
1633                 current_rightmost = leftmost_frame + current_page;
1634                 if (current_rightmost < new_page_size) {
1635                         leftmost_after_zoom = 0;
1636                 } else {
1637                         leftmost_after_zoom = current_rightmost - new_page_size;
1638                 }
1639                 break;
1640
1641         case ZoomFocusCenter:
1642                 current_center = current_leftmost + (current_page/2);
1643                 if (current_center < half_page_size) {
1644                         leftmost_after_zoom = 0;
1645                 } else {
1646                         leftmost_after_zoom = current_center - half_page_size;
1647                 }
1648                 break;
1649
1650         case ZoomFocusPlayhead:
1651                 /* try to keep the playhead in the same place */
1652
1653                 where = playhead_cursor->current_frame;
1654
1655                 l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1656
1657                 if (l < 0) {
1658                         leftmost_after_zoom = 0;
1659                 } else if (l > max_frames) {
1660                         leftmost_after_zoom = max_frames - new_page_size;
1661                 } else {
1662                         leftmost_after_zoom = (nframes64_t) l;
1663                 }
1664                 break;
1665
1666         case ZoomFocusMouse:
1667                 /* try to keep the mouse over the same point in the display */
1668
1669                 if (!mouse_frame (where, in_track_canvas)) {
1670                         /* use playhead instead */
1671                         where = playhead_cursor->current_frame;
1672
1673                         if (where < half_page_size) {
1674                                 leftmost_after_zoom = 0;
1675                         } else {
1676                                 leftmost_after_zoom = where - half_page_size;
1677                         }
1678
1679                 } else {
1680
1681                         l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1682
1683                         if (l < 0) {
1684                                 leftmost_after_zoom = 0;
1685                         } else if (l > max_frames) {
1686                                 leftmost_after_zoom = max_frames - new_page_size;
1687                         } else {
1688                                 leftmost_after_zoom = (nframes64_t) l;
1689                         }
1690                 }
1691
1692                 break;
1693
1694         case ZoomFocusEdit:
1695                 /* try to keep the edit point in the same place */
1696                 where = get_preferred_edit_position ();
1697
1698                 if (where > 0) {
1699
1700                         double l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1701
1702                         if (l < 0) {
1703                                 leftmost_after_zoom = 0;
1704                         } else if (l > max_frames) {
1705                                 leftmost_after_zoom = max_frames - new_page_size;
1706                         } else {
1707                                 leftmost_after_zoom = (nframes64_t) l;
1708                         }
1709
1710                 } else {
1711                         /* edit point not defined */
1712                         return;
1713                 }
1714                 break;
1715
1716         }
1717
1718         // leftmost_after_zoom = min (leftmost_after_zoom, session->current_end_frame());
1719
1720         reposition_and_zoom (leftmost_after_zoom, nfpu);
1721 }
1722
1723 void
1724 Editor::temporal_zoom_region (bool both_axes)
1725 {
1726
1727         nframes64_t start = max_frames;
1728         nframes64_t end = 0;
1729         RegionSelection rs;
1730         set<TimeAxisView*> tracks;
1731         double top_y_position = DBL_MAX;
1732
1733         get_regions_for_action (rs);
1734
1735         if (rs.empty()) {
1736                 return;
1737         }
1738
1739         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
1740
1741                 if ((*i)->region()->position() < start) {
1742                         start = (*i)->region()->position();
1743                 }
1744
1745                 if ((*i)->region()->last_frame() + 1 > end) {
1746                         end = (*i)->region()->last_frame() + 1;
1747                 }
1748
1749                 tracks.insert (&((*i)->get_time_axis_view()));
1750
1751                 if ((*i)->get_time_axis_view().y_position < top_y_position) {
1752                         top_y_position = (*i)->get_time_axis_view().y_position;
1753                 }
1754         }
1755
1756         /* now comes an "interesting" hack ... make sure we leave a little space
1757            at each end of the editor so that the zoom doesn't fit the region
1758            precisely to the screen.
1759         */
1760
1761         GdkScreen* screen = gdk_screen_get_default ();
1762         gint pixwidth = gdk_screen_get_width (screen);
1763         gint mmwidth = gdk_screen_get_width_mm (screen);
1764         double pix_per_mm = (double) pixwidth/ (double) mmwidth;
1765         double one_centimeter_in_pixels = pix_per_mm * 10.0;
1766
1767         if ((start == 0 && end == 0) || end < start) {
1768                 return;
1769         }
1770
1771         nframes64_t range = end - start;
1772         double new_fpu = (double)range / (double)canvas_width;
1773         nframes64_t extra_samples = (nframes64_t) floor (one_centimeter_in_pixels * new_fpu);
1774
1775         if (start > extra_samples) {
1776                 start -= extra_samples;
1777         } else {
1778                 start = 0;
1779         }
1780
1781         if (max_frames - extra_samples > end) {
1782                 end += extra_samples;
1783         } else {
1784                 end = max_frames;
1785         }
1786
1787         if (both_axes) {
1788                 /* save visual state with track states included, and prevent
1789                    set_frames_per_unit() from doing it again.
1790                 */
1791                 undo_visual_stack.push_back (current_visual_state(true));
1792                 no_save_visual = true;
1793         }
1794
1795         temporal_zoom_by_frame (start, end, "zoom to region");
1796
1797         if (both_axes) {
1798                 uint32_t per_track_height = (uint32_t) floor ((canvas_height - 10.0) / tracks.size());
1799
1800                 /* set visible track heights appropriately */
1801
1802                 for (set<TimeAxisView*>::iterator t = tracks.begin(); t != tracks.end(); ++t) {
1803                         (*t)->set_height (per_track_height);
1804                 }
1805
1806                 /* hide irrelevant tracks */
1807
1808                 no_route_list_redisplay = true;
1809
1810                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
1811                         if (find (tracks.begin(), tracks.end(), (*i)) == tracks.end()) {
1812                                 hide_track_in_display (**i, true);
1813                         }
1814                 }
1815
1816                 no_route_list_redisplay = false;
1817                 redisplay_route_list ();
1818
1819                 vertical_adjustment.set_value (std::max (top_y_position - 5.0, 0.0));
1820                 no_save_visual = false;
1821         }
1822
1823         zoomed_to_region = true;
1824         redo_visual_stack.push_back (current_visual_state());
1825 }
1826
1827 void
1828 Editor::toggle_zoom_region (bool both_axes)
1829 {
1830         if (zoomed_to_region) {
1831                 swap_visual_state ();
1832         } else {
1833                 temporal_zoom_region (both_axes);
1834         }
1835 }
1836
1837 void
1838 Editor::temporal_zoom_selection ()
1839 {
1840         if (!selection) return;
1841
1842         if (selection->time.empty()) {
1843                 return;
1844         }
1845
1846         nframes64_t start = selection->time[clicked_selection].start;
1847         nframes64_t end = selection->time[clicked_selection].end;
1848
1849         temporal_zoom_by_frame (start, end, "zoom to selection");
1850 }
1851
1852 void
1853 Editor::temporal_zoom_session ()
1854 {
1855         ENSURE_GUI_THREAD (mem_fun (*this, &Editor::temporal_zoom_session));
1856
1857         if (session) {
1858                 last_canvas_frame = ((session->current_end_frame() - session->current_start_frame()) + (current_page_frames() / 24));
1859                 temporal_zoom_by_frame (session->current_start_frame(), session->current_end_frame(), "zoom to session");
1860         }
1861 }
1862
1863 void
1864 Editor::temporal_zoom_by_frame (nframes64_t start, nframes64_t end, const string & op)
1865 {
1866         if (!session) return;
1867
1868         if ((start == 0 && end == 0) || end < start) {
1869                 return;
1870         }
1871
1872         nframes64_t range = end - start;
1873
1874         double new_fpu = (double)range / (double)canvas_width;
1875
1876         nframes64_t new_page = (nframes64_t) floor (canvas_width * new_fpu);
1877         nframes64_t middle = (nframes64_t) floor( (double)start + ((double)range / 2.0f ));
1878         nframes64_t new_leftmost = (nframes64_t) floor( (double)middle - ((double)new_page/2.0f));
1879
1880         if (new_leftmost > middle) {
1881                 new_leftmost = 0;
1882         }
1883
1884         reposition_and_zoom (new_leftmost, new_fpu);
1885 }
1886
1887 void
1888 Editor::temporal_zoom_to_frame (bool coarser, nframes64_t frame)
1889 {
1890         if (!session) {
1891                 return;
1892         }
1893         double range_before = frame - leftmost_frame;
1894         double new_fpu;
1895
1896         new_fpu = frames_per_unit;
1897
1898         if (coarser) {
1899                 new_fpu *= 1.61803399;
1900                 range_before *= 1.61803399;
1901         } else {
1902                 new_fpu = max(1.0,(new_fpu/1.61803399));
1903                 range_before /= 1.61803399;
1904         }
1905
1906         if (new_fpu == frames_per_unit)  {
1907                 return;
1908         }
1909
1910         nframes64_t new_leftmost = frame - (nframes64_t)range_before;
1911
1912         if (new_leftmost > frame) {
1913                 new_leftmost = 0;
1914         }
1915 //      begin_reversible_command (_("zoom to frame"));
1916 //      session->add_undo (bind (mem_fun(*this, &Editor::reposition_and_zoom), leftmost_frame, frames_per_unit));
1917 //      session->add_redo (bind (mem_fun(*this, &Editor::reposition_and_zoom), new_leftmost, new_fpu));
1918 //      commit_reversible_command ();
1919
1920         reposition_and_zoom (new_leftmost, new_fpu);
1921 }
1922
1923
1924 bool
1925 Editor::choose_new_marker_name(string &name) {
1926
1927         if (!Config->get_name_new_markers()) {
1928                 /* don't prompt user for a new name */
1929                 return true;
1930         }
1931
1932         ArdourPrompter dialog (true);
1933
1934         dialog.set_prompt (_("New Name:"));
1935
1936         WindowTitle title(Glib::get_application_name());
1937         title += _("Name New Location Marker");
1938
1939         dialog.set_title(title.get_string());
1940
1941         dialog.set_name ("MarkNameWindow");
1942         dialog.set_size_request (250, -1);
1943         dialog.set_position (Gtk::WIN_POS_MOUSE);
1944
1945         dialog.add_button (Stock::OK, RESPONSE_ACCEPT);
1946         dialog.set_initial_text (name);
1947
1948         dialog.show ();
1949
1950         switch (dialog.run ()) {
1951         case RESPONSE_ACCEPT:
1952                 break;
1953         default:
1954                 return false;
1955         }
1956
1957         dialog.get_result(name);
1958         return true;
1959
1960 }
1961
1962
1963 void
1964 Editor::add_location_from_selection ()
1965 {
1966         string rangename;
1967
1968         if (selection->time.empty()) {
1969                 return;
1970         }
1971
1972         if (session == 0 || clicked_axisview == 0) {
1973                 return;
1974         }
1975
1976         nframes64_t start = selection->time[clicked_selection].start;
1977         nframes64_t end = selection->time[clicked_selection].end;
1978
1979         session->locations()->next_available_name(rangename,"selection");
1980         Location *location = new Location (start, end, rangename, Location::IsRangeMarker);
1981
1982         session->begin_reversible_command (_("add marker"));
1983         XMLNode &before = session->locations()->get_state();
1984         session->locations()->add (location, true);
1985         XMLNode &after = session->locations()->get_state();
1986         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1987         session->commit_reversible_command ();
1988 }
1989
1990 void
1991 Editor::add_location_mark (nframes64_t where)
1992 {
1993         string markername;
1994
1995         select_new_marker = true;
1996
1997         session->locations()->next_available_name(markername,"mark");
1998         if (!choose_new_marker_name(markername)) {
1999                 return;
2000         }
2001         Location *location = new Location (where, where, markername, Location::IsMark);
2002         session->begin_reversible_command (_("add marker"));
2003         XMLNode &before = session->locations()->get_state();
2004         session->locations()->add (location, true);
2005         XMLNode &after = session->locations()->get_state();
2006         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2007         session->commit_reversible_command ();
2008 }
2009
2010 void
2011 Editor::add_location_from_playhead_cursor ()
2012 {
2013         add_location_mark (session->audible_frame());
2014 }
2015
2016 void
2017 Editor::add_location_from_audio_region ()
2018 {
2019         RegionSelection rs;
2020
2021         get_regions_for_action (rs);
2022
2023         if (rs.empty()) {
2024                 return;
2025         }
2026
2027         RegionView* rv = *(rs.begin());
2028         boost::shared_ptr<Region> region = rv->region();
2029
2030         Location *location = new Location (region->position(), region->last_frame(), region->name(), Location::IsRangeMarker);
2031         session->begin_reversible_command (_("add marker"));
2032         XMLNode &before = session->locations()->get_state();
2033         session->locations()->add (location, true);
2034         XMLNode &after = session->locations()->get_state();
2035         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2036         session->commit_reversible_command ();
2037 }
2038
2039 void
2040 Editor::amplitude_zoom_step (bool in)
2041 {
2042         gdouble zoom = 1.0;
2043
2044         if (in) {
2045                 zoom *= 2.0;
2046         } else {
2047                 if (zoom > 2.0) {
2048                         zoom /= 2.0;
2049                 } else {
2050                         zoom = 1.0;
2051                 }
2052         }
2053
2054 #ifdef FIX_FOR_CANVAS
2055         /* XXX DO SOMETHING */
2056 #endif
2057 }
2058
2059
2060 /* DELETION */
2061
2062
2063 void
2064 Editor::delete_sample_forward ()
2065 {
2066 }
2067
2068 void
2069 Editor::delete_sample_backward ()
2070 {
2071 }
2072
2073 void
2074 Editor::delete_screen ()
2075 {
2076 }
2077
2078 /* SEARCH */
2079
2080 void
2081 Editor::search_backwards ()
2082 {
2083         /* what ? */
2084 }
2085
2086 void
2087 Editor::search_forwards ()
2088 {
2089         /* what ? */
2090 }
2091
2092 /* MARKS */
2093
2094 void
2095 Editor::jump_forward_to_mark ()
2096 {
2097         if (!session) {
2098                 return;
2099         }
2100
2101         Location *location = session->locations()->first_location_after (playhead_cursor->current_frame);
2102
2103         if (location) {
2104                 session->request_locate (location->start(), session->transport_rolling());
2105         } else {
2106                 session->request_locate (session->current_end_frame());
2107         }
2108 }
2109
2110 void
2111 Editor::jump_backward_to_mark ()
2112 {
2113         if (!session) {
2114                 return;
2115         }
2116
2117         Location *location = session->locations()->first_location_before (playhead_cursor->current_frame);
2118
2119         if (location) {
2120                 session->request_locate (location->start(), session->transport_rolling());
2121         } else {
2122                 session->goto_start ();
2123         }
2124 }
2125
2126 void
2127 Editor::set_mark ()
2128 {
2129         nframes64_t pos;
2130         float prefix;
2131         bool was_floating;
2132         string markername;
2133
2134         if (get_prefix (prefix, was_floating)) {
2135                 pos = session->audible_frame ();
2136         } else {
2137                 if (was_floating) {
2138                         pos = (nframes64_t) floor (prefix * session->frame_rate ());
2139                 } else {
2140                         pos = (nframes64_t) floor (prefix);
2141                 }
2142         }
2143
2144         session->locations()->next_available_name(markername,"mark");
2145         if (!choose_new_marker_name(markername)) {
2146                 return;
2147         }
2148         session->locations()->add (new Location (pos, 0, markername, Location::IsMark), true);
2149 }
2150
2151 void
2152 Editor::clear_markers ()
2153 {
2154         if (session) {
2155                 session->begin_reversible_command (_("clear markers"));
2156                 XMLNode &before = session->locations()->get_state();
2157                 session->locations()->clear_markers ();
2158                 XMLNode &after = session->locations()->get_state();
2159                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2160                 session->commit_reversible_command ();
2161         }
2162 }
2163
2164 void
2165 Editor::clear_ranges ()
2166 {
2167         if (session) {
2168                 session->begin_reversible_command (_("clear ranges"));
2169                 XMLNode &before = session->locations()->get_state();
2170
2171                 Location * looploc = session->locations()->auto_loop_location();
2172                 Location * punchloc = session->locations()->auto_punch_location();
2173
2174                 session->locations()->clear_ranges ();
2175                 // re-add these
2176                 if (looploc) session->locations()->add (looploc);
2177                 if (punchloc) session->locations()->add (punchloc);
2178
2179                 XMLNode &after = session->locations()->get_state();
2180                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2181                 session->commit_reversible_command ();
2182         }
2183 }
2184
2185 void
2186 Editor::clear_locations ()
2187 {
2188         session->begin_reversible_command (_("clear locations"));
2189         XMLNode &before = session->locations()->get_state();
2190         session->locations()->clear ();
2191         XMLNode &after = session->locations()->get_state();
2192         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2193         session->commit_reversible_command ();
2194         session->locations()->clear ();
2195 }
2196
2197 void
2198 Editor::unhide_markers ()
2199 {
2200         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2201                 Location *l = (*i).first;
2202                 if (l->is_hidden() && l->is_mark()) {
2203                         l->set_hidden(false, this);
2204                 }
2205         }
2206 }
2207
2208 void
2209 Editor::unhide_ranges ()
2210 {
2211         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2212                 Location *l = (*i).first;
2213                 if (l->is_hidden() && l->is_range_marker()) {
2214                         l->set_hidden(false, this);
2215                 }
2216         }
2217 }
2218
2219 /* INSERT/REPLACE */
2220
2221 void
2222 Editor::insert_region_list_drag (boost::shared_ptr<Region> region, int x, int y)
2223 {
2224         double wx, wy;
2225         double cx, cy;
2226         TimeAxisView *tv;
2227         nframes64_t where;
2228         RouteTimeAxisView *rtv = 0;
2229         boost::shared_ptr<Playlist> playlist;
2230
2231         track_canvas->window_to_world (x, y, wx, wy);
2232         //wx += horizontal_adjustment.get_value();
2233         //wy += vertical_adjustment.get_value();
2234
2235         GdkEvent event;
2236         event.type = GDK_BUTTON_RELEASE;
2237         event.button.x = wx;
2238         event.button.y = wy;
2239
2240         where = event_frame (&event, &cx, &cy);
2241
2242         if (where < leftmost_frame || where > leftmost_frame + current_page_frames()) {
2243                 /* clearly outside canvas area */
2244                 return;
2245         }
2246
2247         if ((tv = trackview_by_y_position (cy)) == 0) {
2248                 return;
2249         }
2250
2251         if ((rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2252                 return;
2253         }
2254
2255         if ((playlist = rtv->playlist()) == 0) {
2256                 return;
2257         }
2258
2259         snap_to (where);
2260
2261         begin_reversible_command (_("insert dragged region"));
2262         XMLNode &before = playlist->get_state();
2263         playlist->add_region (RegionFactory::create (region), where, 1.0);
2264         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2265         commit_reversible_command ();
2266 }
2267
2268 void
2269 Editor::insert_route_list_drag (boost::shared_ptr<Route> route, int x, int y) {
2270         double wx, wy;
2271         double cx, cy;
2272         TimeAxisView *tv;
2273         nframes_t where;
2274         RouteTimeAxisView *dest_rtv = 0;
2275         RouteTimeAxisView *source_rtv = 0;
2276
2277         track_canvas->window_to_world (x, y, wx, wy);
2278         wx += horizontal_adjustment.get_value();
2279         wy += vertical_adjustment.get_value();
2280
2281         GdkEvent event;
2282         event.type = GDK_BUTTON_RELEASE;
2283         event.button.x = wx;
2284         event.button.y = wy;
2285
2286         where = event_frame (&event, &cx, &cy);
2287
2288         if ((tv = trackview_by_y_position (cy)) == 0) {
2289                 return;
2290         }
2291
2292         if ((dest_rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2293                 return;
2294         }
2295
2296         /* use this drag source to add underlay to a track. But we really don't care
2297            about the Route, only the view of the route, so find it first */
2298         for(TrackViewList::iterator it = track_views.begin(); it != track_views.end(); ++it) {
2299                 if((source_rtv = dynamic_cast<RouteTimeAxisView*>(*it)) == 0) {
2300                         continue;
2301                 }
2302
2303                 if(source_rtv->route() == route && source_rtv != dest_rtv) {
2304                         dest_rtv->add_underlay(source_rtv->view());
2305                         break;
2306                 }
2307         }
2308 }
2309
2310 void
2311 Editor::insert_region_list_selection (float times)
2312 {
2313         RouteTimeAxisView *tv = 0;
2314         boost::shared_ptr<Playlist> playlist;
2315
2316         if (clicked_routeview != 0) {
2317                 tv = clicked_routeview;
2318         } else if (!selection->tracks.empty()) {
2319                 if ((tv = dynamic_cast<RouteTimeAxisView*>(selection->tracks.front())) == 0) {
2320                         return;
2321                 }
2322         } else if (entered_track != 0) {
2323                 if ((tv = dynamic_cast<RouteTimeAxisView*>(entered_track)) == 0) {
2324                         return;
2325                 }
2326         } else {
2327                 return;
2328         }
2329
2330         if ((playlist = tv->playlist()) == 0) {
2331                 return;
2332         }
2333
2334         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
2335
2336         if (selected->count_selected_rows() != 1) {
2337                 return;
2338         }
2339
2340         TreeView::Selection::ListHandle_Path rows = selected->get_selected_rows ();
2341
2342         /* only one row selected, so rows.begin() is it */
2343
2344         TreeIter iter;
2345
2346         if ((iter = region_list_model->get_iter (*rows.begin()))) {
2347
2348                 boost::shared_ptr<Region> region = (*iter)[region_list_columns.region];
2349
2350                 begin_reversible_command (_("insert region"));
2351                 XMLNode &before = playlist->get_state();
2352                 playlist->add_region ((RegionFactory::create (region)), get_preferred_edit_position(), times);
2353                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2354                 commit_reversible_command ();
2355         }
2356 }
2357
2358 /* BUILT-IN EFFECTS */
2359
2360 void
2361 Editor::reverse_selection ()
2362 {
2363
2364 }
2365
2366 /* GAIN ENVELOPE EDITING */
2367
2368 void
2369 Editor::edit_envelope ()
2370 {
2371 }
2372
2373 /* PLAYBACK */
2374
2375 void
2376 Editor::transition_to_rolling (bool fwd)
2377 {
2378         if (!session) {
2379                 return;
2380         }
2381
2382         switch (Config->get_slave_source()) {
2383         case None:
2384         case JACK:
2385                 break;
2386         default:
2387                 /* transport controlled by the master */
2388                 return;
2389         }
2390
2391         if (session->is_auditioning()) {
2392                 session->cancel_audition ();
2393                 return;
2394         }
2395
2396         session->request_transport_speed (fwd ? 1.0f : -1.0f);
2397 }
2398
2399 void
2400 Editor::toggle_playback (bool with_abort)
2401 {
2402         if (!session) {
2403                 return;
2404         }
2405
2406         switch (Config->get_slave_source()) {
2407         case None:
2408         case JACK:
2409                 break;
2410         default:
2411                 /* transport controlled by the master */
2412                 return;
2413         }
2414
2415         if (session->is_auditioning()) {
2416                 session->cancel_audition ();
2417                 return;
2418         }
2419
2420         if (session->transport_rolling()) {
2421                 session->request_stop (with_abort);
2422                 if (session->get_play_loop()) {
2423                         session->request_play_loop (false);
2424                 }
2425         } else {
2426                 session->request_transport_speed (1.0f);
2427         }
2428 }
2429
2430 void
2431 Editor::play_from_start ()
2432 {
2433         session->request_locate (session->current_start_frame(), true);
2434 }
2435
2436 void
2437 Editor::play_from_edit_point ()
2438 {
2439         session->request_locate (get_preferred_edit_position(), true);
2440 }
2441
2442 void
2443 Editor::play_from_edit_point_and_return ()
2444 {
2445         nframes64_t start_frame;
2446         nframes64_t return_frame;
2447
2448         start_frame = get_preferred_edit_position (true);
2449
2450         if (session->transport_rolling()) {
2451                 session->request_locate (start_frame, false);
2452                 return;
2453         }
2454
2455         /* don't reset the return frame if its already set */
2456
2457         if ((return_frame = session->requested_return_frame()) < 0) {
2458                 return_frame = session->audible_frame();
2459         }
2460
2461         if (start_frame >= 0) {
2462                 session->request_roll_at_and_return (start_frame, return_frame);
2463         }
2464 }
2465
2466 void
2467 Editor::play_selection ()
2468 {
2469         if (selection->time.empty()) {
2470                 return;
2471         }
2472
2473         session->request_play_range (true);
2474 }
2475
2476 void
2477 Editor::loop_selected_region ()
2478 {
2479         RegionSelection rs;
2480
2481         get_regions_for_action (rs);
2482
2483         if (!rs.empty()) {
2484                 RegionView *rv = *(rs.begin());
2485                 Location* tll;
2486
2487                 if ((tll = transport_loop_location()) != 0)  {
2488
2489                         tll->set (rv->region()->position(), rv->region()->last_frame());
2490
2491                         // enable looping, reposition and start rolling
2492
2493                         session->request_play_loop (true);
2494                         session->request_locate (tll->start(), false);
2495                         session->request_transport_speed (1.0f);
2496                 }
2497         }
2498 }
2499
2500 void
2501 Editor::play_location (Location& location)
2502 {
2503         if (location.start() <= location.end()) {
2504                 return;
2505         }
2506
2507         session->request_bounded_roll (location.start(), location.end());
2508 }
2509
2510 void
2511 Editor::loop_location (Location& location)
2512 {
2513         if (location.start() <= location.end()) {
2514                 return;
2515         }
2516
2517         Location* tll;
2518
2519         if ((tll = transport_loop_location()) != 0) {
2520                 tll->set (location.start(), location.end());
2521
2522                 // enable looping, reposition and start rolling
2523                 session->request_play_loop (true);
2524                 session->request_locate (tll->start(), true);
2525         }
2526 }
2527
2528 void
2529 Editor::raise_region ()
2530 {
2531         selection->foreach_region (&Region::raise);
2532 }
2533
2534 void
2535 Editor::raise_region_to_top ()
2536 {
2537         selection->foreach_region (&Region::raise_to_top);
2538 }
2539
2540 void
2541 Editor::lower_region ()
2542 {
2543         selection->foreach_region (&Region::lower);
2544 }
2545
2546 void
2547 Editor::lower_region_to_bottom ()
2548 {
2549         selection->foreach_region (&Region::lower_to_bottom);
2550 }
2551
2552 /** Show the region editor for the selected regions */
2553 void
2554 Editor::edit_region ()
2555 {
2556         selection->foreach_regionview (&RegionView::show_region_editor);
2557 }
2558
2559 void
2560 Editor::rename_region()
2561 {
2562         RegionSelection rs;
2563
2564         get_regions_for_action (rs);
2565
2566         if (rs.empty()) {
2567                 return;
2568         }
2569
2570         WindowTitle title (Glib::get_application_name());
2571         title += _("Rename Region");
2572
2573         ArdourDialog d (*this, title.get_string(), true, false);
2574         Entry entry;
2575         Label label (_("New name:"));
2576         HBox hbox;
2577
2578         hbox.set_spacing (6);
2579         hbox.pack_start (label, false, false);
2580         hbox.pack_start (entry, true, true);
2581
2582         d.get_vbox()->set_border_width (12);
2583         d.get_vbox()->pack_start (hbox, false, false);
2584
2585         d.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
2586         d.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
2587
2588         d.set_size_request (300, -1);
2589         d.set_position (Gtk::WIN_POS_MOUSE);
2590
2591         entry.set_text (rs.front()->region()->name());
2592         entry.select_region (0, -1);
2593
2594         entry.signal_activate().connect (bind (mem_fun (d, &Dialog::response), RESPONSE_OK));
2595
2596         d.show_all ();
2597
2598         entry.grab_focus();
2599
2600         int ret = d.run();
2601
2602         d.hide ();
2603
2604         if (ret == RESPONSE_OK) {
2605                 std::string str = entry.get_text();
2606                 strip_whitespace_edges (str);
2607                 if (!str.empty()) {
2608                         rs.front()->region()->set_name (str);
2609                         redisplay_regions ();
2610                 }
2611         }
2612 }
2613
2614 void
2615 Editor::audition_playlist_region_via_route (boost::shared_ptr<Region> region, Route& route)
2616 {
2617         if (session->is_auditioning()) {
2618                 session->cancel_audition ();
2619         }
2620
2621         // note: some potential for creativity here, because region doesn't
2622         // have to belong to the playlist that Route is handling
2623
2624         // bool was_soloed = route.soloed();
2625
2626         route.set_solo (true, this);
2627
2628         session->request_bounded_roll (region->position(), region->position() + region->length());
2629
2630         /* XXX how to unset the solo state ? */
2631 }
2632
2633 /** Start an audition of the first selected region */
2634 void
2635 Editor::play_edit_range ()
2636 {
2637         nframes64_t start, end;
2638
2639         if (get_edit_op_range (start, end)) {
2640                 session->request_bounded_roll (start, end);
2641         }
2642 }
2643
2644 void
2645 Editor::play_selected_region ()
2646 {
2647         nframes64_t start = max_frames;
2648         nframes64_t end = 0;
2649         RegionSelection rs;
2650
2651         get_regions_for_action (rs);
2652
2653         if (rs.empty()) {
2654                 return;
2655         }
2656
2657         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2658                 if ((*i)->region()->position() < start) {
2659                         start = (*i)->region()->position();
2660                 }
2661                 if ((*i)->region()->last_frame() + 1 > end) {
2662                         end = (*i)->region()->last_frame() + 1;
2663                 }
2664         }
2665
2666         session->request_stop ();
2667         session->request_bounded_roll (start, end);
2668 }
2669
2670 void
2671 Editor::audition_playlist_region_standalone (boost::shared_ptr<Region> region)
2672 {
2673         session->audition_region (region);
2674 }
2675
2676 void
2677 Editor::build_interthread_progress_window ()
2678 {
2679         interthread_progress_window = new ArdourDialog (X_("interthread progress"), true);
2680
2681         interthread_progress_bar.set_orientation (Gtk::PROGRESS_LEFT_TO_RIGHT);
2682
2683         interthread_progress_window->set_border_width (12);
2684         interthread_progress_window->get_vbox()->set_spacing (6);
2685
2686         interthread_progress_label.set_alignment (0.5, 0.5);
2687
2688         interthread_progress_window->get_vbox()->pack_start (interthread_progress_label, false, false);
2689         interthread_progress_window->get_vbox()->pack_start (interthread_progress_bar,false, false);
2690
2691         // GTK2FIX: this button needs a modifiable label
2692
2693         Button* b = interthread_progress_window->add_button (Stock::CANCEL, RESPONSE_CANCEL);
2694         b->signal_clicked().connect (mem_fun(*this, &Editor::interthread_cancel_clicked));
2695
2696         interthread_cancel_button.add (interthread_cancel_label);
2697
2698         interthread_progress_window->set_default_size (200, 100);
2699 }
2700
2701 void
2702 Editor::interthread_cancel_clicked ()
2703 {
2704         if (current_interthread_info) {
2705                 current_interthread_info->cancel = true;
2706         }
2707 }
2708
2709 void
2710 Editor::region_from_selection ()
2711 {
2712         if (clicked_axisview == 0) {
2713                 return;
2714         }
2715
2716         if (selection->time.empty()) {
2717                 return;
2718         }
2719
2720         nframes64_t start = selection->time[clicked_selection].start;
2721         nframes64_t end = selection->time[clicked_selection].end;
2722
2723         nframes64_t selection_cnt = end - start + 1;
2724
2725         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2726                 boost::shared_ptr<AudioRegion> current;
2727                 boost::shared_ptr<Region> current_r;
2728                 boost::shared_ptr<Playlist> pl;
2729
2730                 nframes64_t internal_start;
2731                 string new_name;
2732
2733                 if ((pl = (*i)->playlist()) == 0) {
2734                         continue;
2735                 }
2736
2737                 if ((current_r = pl->top_region_at (start)) == 0) {
2738                         continue;
2739                 }
2740
2741                 current = boost::dynamic_pointer_cast<AudioRegion> (current_r);
2742                 assert(current); // FIXME
2743                 if (current != 0) {
2744                         internal_start = start - current->position();
2745                         session->region_name (new_name, current->name(), true);
2746                         boost::shared_ptr<Region> region (RegionFactory::create (current, internal_start, selection_cnt, new_name));
2747                 }
2748         }
2749 }
2750
2751 void
2752 Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_regions)
2753 {
2754         if (selection->time.empty() || selection->tracks.empty()) {
2755                 return;
2756         }
2757
2758         nframes64_t start = selection->time[clicked_selection].start;
2759         nframes64_t end = selection->time[clicked_selection].end;
2760
2761         sort_track_selection ();
2762
2763         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2764
2765                 boost::shared_ptr<AudioRegion> current;
2766                 boost::shared_ptr<Region> current_r;
2767                 boost::shared_ptr<Playlist> playlist;
2768                 nframes64_t internal_start;
2769                 string new_name;
2770
2771                 if ((playlist = (*i)->playlist()) == 0) {
2772                         continue;
2773                 }
2774
2775                 if ((current_r = playlist->top_region_at(start)) == 0) {
2776                         continue;
2777                 }
2778
2779                 if ((current = boost::dynamic_pointer_cast<AudioRegion>(current_r)) == 0) {
2780                         continue;
2781                 }
2782
2783                 internal_start = start - current->position();
2784                 session->region_name (new_name, current->name(), true);
2785
2786                 new_regions.push_back (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (current, internal_start, end - start + 1, new_name)));
2787         }
2788 }
2789
2790 void
2791 Editor::split_multichannel_region ()
2792 {
2793         RegionSelection rs;
2794
2795         get_regions_for_action (rs);
2796
2797         if (rs.empty()) {
2798                 return;
2799         }
2800
2801         vector<boost::shared_ptr<AudioRegion> > v;
2802
2803         for (list<RegionView*>::iterator x = rs.begin(); x != rs.end(); ++x) {
2804
2805                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*x);
2806
2807                 if (!arv || arv->audio_region()->n_channels() < 2) {
2808                         continue;
2809                 }
2810
2811                 (arv)->audio_region()->separate_by_channel (*session, v);
2812         }
2813 }
2814
2815 void
2816 Editor::new_region_from_selection ()
2817 {
2818         region_from_selection ();
2819         cancel_selection ();
2820 }
2821
2822 static void
2823 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
2824 {
2825         switch (rv->region()->coverage (ar->start, ar->end - 1)) {
2826         case OverlapNone:
2827                 break;
2828         default:
2829                 rs->push_back (rv);
2830         }
2831 }
2832
2833 void
2834 Editor::separate_regions_between (const TimeSelection& ts)
2835 {
2836         bool in_command = false;
2837         boost::shared_ptr<Playlist> playlist;
2838         RegionSelection new_selection;
2839         TrackSelection tmptracks;
2840
2841         if (selection->tracks.empty()) {
2842
2843                 /* use tracks with selected regions */
2844
2845                 RegionSelection rs;
2846
2847                 get_regions_for_action (rs);
2848
2849                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2850                         TimeAxisView* tv = &(*i)->get_time_axis_view();
2851
2852                         if (find (tmptracks.begin(), tmptracks.end(), tv) == tmptracks.end()) {
2853                                 tmptracks.push_back (tv);
2854                         }
2855                 }
2856
2857                 if (tmptracks.empty()) {
2858                         /* no regions selected: do nothing */
2859                         return;
2860                 }
2861
2862         } else {
2863
2864                 tmptracks = selection->tracks;
2865
2866         }
2867
2868         sort_track_selection (&tmptracks);
2869
2870
2871
2872
2873         for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
2874
2875                 RouteTimeAxisView* rtv;
2876
2877                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2878
2879                         if (rtv->is_track()) {
2880
2881                                 /* no edits to destructive tracks */
2882
2883                                 if (rtv->track()->diskstream()->destructive()) {
2884                                         continue;
2885                                 }
2886
2887                                 if ((playlist = rtv->playlist()) != 0) {
2888
2889                                         XMLNode *before;
2890                                         bool got_some;
2891
2892                                         before = &(playlist->get_state());
2893                                         got_some = false;
2894
2895                                         /* XXX need to consider musical time selections here at some point */
2896
2897                                         double speed = rtv->get_diskstream()->speed();
2898
2899
2900                                         for (list<AudioRange>::const_iterator t = ts.begin(); t != ts.end(); ++t) {
2901
2902                                                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
2903                                                 latest_regionviews.clear ();
2904
2905                                                 playlist->partition ((nframes64_t)((*t).start * speed), (nframes64_t)((*t).end * speed), true);
2906
2907                                                 c.disconnect ();
2908
2909                                                 if (!latest_regionviews.empty()) {
2910
2911                                                         got_some = true;
2912
2913                                                         rtv->view()->foreach_regionview (bind (sigc::ptr_fun (add_if_covered), &(*t), &new_selection));
2914
2915                                                         if (!in_command) {
2916                                                                 begin_reversible_command (_("separate"));
2917                                                                 in_command = true;
2918                                                         }
2919
2920                                                         session->add_command(new MementoCommand<Playlist>(*playlist, before, &playlist->get_state()));
2921
2922                                                 }
2923                                         }
2924
2925                                         if (!got_some) {
2926                                                 delete before;
2927                                         }
2928                                 }
2929                         }
2930                 }
2931         }
2932
2933         if (in_command) {
2934                 selection->set (new_selection);
2935                 set_mouse_mode (MouseObject);
2936
2937                 commit_reversible_command ();
2938         }
2939 }
2940
2941 void
2942 Editor::separate_region_from_selection ()
2943 {
2944         /* preferentially use *all* ranges in the time selection if we're in range mode
2945            to allow discontiguous operation, since get_edit_op_range() currently
2946            returns a single range.
2947         */
2948
2949         if (mouse_mode == MouseRange && !selection->time.empty()) {
2950
2951                 separate_regions_between (selection->time);
2952
2953         } else {
2954
2955                 nframes64_t start;
2956                 nframes64_t end;
2957
2958                 if (get_edit_op_range (start, end)) {
2959
2960                         AudioRange ar (start, end, 1);
2961                         TimeSelection ts;
2962                         ts.push_back (ar);
2963
2964                         separate_regions_between (ts);
2965                 }
2966         }
2967 }
2968
2969 void
2970 Editor::separate_region_from_punch ()
2971 {
2972         Location* loc  = session->locations()->auto_punch_location();
2973         if (loc) {
2974                 separate_regions_using_location (*loc);
2975         }
2976 }
2977
2978 void
2979 Editor::separate_region_from_loop ()
2980 {
2981         Location* loc  = session->locations()->auto_loop_location();
2982         if (loc) {
2983                 separate_regions_using_location (*loc);
2984         }
2985 }
2986
2987 void
2988 Editor::separate_regions_using_location (Location& loc)
2989 {
2990         if (loc.is_mark()) {
2991                 return;
2992         }
2993
2994         AudioRange ar (loc.start(), loc.end(), 1);
2995         TimeSelection ts;
2996
2997         ts.push_back (ar);
2998
2999         separate_regions_between (ts);
3000 }
3001
3002 void
3003 Editor::crop_region_to_selection ()
3004 {
3005         if (!selection->time.empty()) {
3006
3007                 crop_region_to (selection->time.start(), selection->time.end_frame());
3008
3009         } else {
3010
3011                 nframes64_t start;
3012                 nframes64_t end;
3013
3014                 if (get_edit_op_range (start, end)) {
3015                         crop_region_to (start, end);
3016                 }
3017         }
3018
3019 }
3020
3021 void
3022 Editor::crop_region_to (nframes64_t start, nframes64_t end)
3023 {
3024         vector<boost::shared_ptr<Playlist> > playlists;
3025         boost::shared_ptr<Playlist> playlist;
3026         TrackSelection* ts;
3027
3028         if (selection->tracks.empty()) {
3029                 ts = &track_views;
3030         } else {
3031                 sort_track_selection ();
3032                 ts = &selection->tracks;
3033         }
3034
3035         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
3036
3037                 RouteTimeAxisView* rtv;
3038
3039                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
3040
3041                         boost::shared_ptr<Track> t = rtv->track();
3042
3043                         if (t != 0 && ! t->diskstream()->destructive()) {
3044
3045                                 if ((playlist = rtv->playlist()) != 0) {
3046                                         playlists.push_back (playlist);
3047                                 }
3048                         }
3049                 }
3050         }
3051
3052         if (playlists.empty()) {
3053                 return;
3054         }
3055
3056         nframes64_t the_start;
3057         nframes64_t the_end;
3058         nframes64_t cnt;
3059
3060         begin_reversible_command (_("trim to selection"));
3061
3062         for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
3063
3064                 boost::shared_ptr<Region> region;
3065
3066                 the_start = start;
3067
3068                 if ((region = (*i)->top_region_at(the_start)) == 0) {
3069                         continue;
3070                 }
3071
3072                 /* now adjust lengths to that we do the right thing
3073                    if the selection extends beyond the region
3074                 */
3075
3076                 the_start = max (the_start, (nframes64_t) region->position());
3077                 if (max_frames - the_start < region->length()) {
3078                         the_end = the_start + region->length() - 1;
3079                 } else {
3080                         the_end = max_frames;
3081                 }
3082                 the_end = min (end, the_end);
3083                 cnt = the_end - the_start + 1;
3084
3085                 XMLNode &before = (*i)->get_state();
3086                 region->trim_to (the_start, cnt, this);
3087                 XMLNode &after = (*i)->get_state();
3088                 session->add_command (new MementoCommand<Playlist>(*(*i), &before, &after));
3089         }
3090
3091         commit_reversible_command ();
3092 }
3093
3094 void
3095 Editor::region_fill_track ()
3096 {
3097         nframes64_t end;
3098         RegionSelection rs;
3099
3100         get_regions_for_action (rs);
3101
3102         if (!session || rs.empty()) {
3103                 return;
3104         }
3105
3106         end = session->current_end_frame ();
3107
3108         begin_reversible_command (_("region fill"));
3109
3110         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3111
3112                 boost::shared_ptr<Region> region ((*i)->region());
3113
3114                 // FIXME
3115                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
3116                 assert(ar);
3117
3118                 boost::shared_ptr<Playlist> pl = region->playlist();
3119
3120                 if (end <= region->last_frame()) {
3121                         return;
3122                 }
3123
3124                 double times = (double) (end - region->last_frame()) / (double) region->length();
3125
3126                 if (times == 0) {
3127                         return;
3128                 }
3129
3130                 XMLNode &before = pl->get_state();
3131                 pl->add_region (RegionFactory::create (ar), ar->last_frame(), times);
3132                 session->add_command (new MementoCommand<Playlist>(*pl, &before, &pl->get_state()));
3133         }
3134
3135         commit_reversible_command ();
3136 }
3137
3138 void
3139 Editor::region_fill_selection ()
3140 {
3141         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3142                 return;
3143         }
3144
3145         if (selection->time.empty()) {
3146                 return;
3147         }
3148
3149
3150         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
3151
3152         if (selected->count_selected_rows() != 1) {
3153                 return;
3154         }
3155
3156         TreeModel::iterator i = region_list_display.get_selection()->get_selected();
3157         boost::shared_ptr<Region> region = (*i)[region_list_columns.region];
3158
3159         nframes64_t start = selection->time[clicked_selection].start;
3160         nframes64_t end = selection->time[clicked_selection].end;
3161
3162         boost::shared_ptr<Playlist> playlist;
3163
3164         if (selection->tracks.empty()) {
3165                 return;
3166         }
3167
3168         nframes64_t selection_length = end - start;
3169         float times = (float)selection_length / region->length();
3170
3171         begin_reversible_command (_("fill selection"));
3172
3173         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
3174
3175                 if ((playlist = (*i)->playlist()) == 0) {
3176                         continue;
3177                 }
3178
3179                 XMLNode &before = playlist->get_state();
3180                 playlist->add_region (RegionFactory::create (region), start, times);
3181                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
3182         }
3183
3184         commit_reversible_command ();
3185 }
3186
3187 void
3188 Editor::set_region_sync_from_edit_point ()
3189 {
3190         nframes64_t where = get_preferred_edit_position ();
3191         RegionSelection rs;
3192         get_regions_for_action (rs);
3193         set_sync_point (where, rs);
3194 }
3195
3196 void
3197 Editor::set_sync_point (nframes64_t where, const RegionSelection& rs)
3198 {
3199         bool in_command = false;
3200
3201         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ++r) {
3202
3203                 if (!(*r)->region()->covers (where)) {
3204                         continue;
3205                 }
3206
3207                 boost::shared_ptr<Region> region ((*r)->region());
3208
3209                 if (!in_command) {
3210                         begin_reversible_command (_("set sync point"));
3211                         in_command = true;
3212                 }
3213
3214                 XMLNode &before = region->playlist()->get_state();
3215                 region->set_sync_position (get_preferred_edit_position());
3216                 XMLNode &after = region->playlist()->get_state();
3217                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3218         }
3219
3220         if (in_command) {
3221                 commit_reversible_command ();
3222         }
3223 }
3224
3225 /** Remove the sync positions of the selection */
3226 void
3227 Editor::remove_region_sync ()
3228 {
3229         RegionSelection rs;
3230
3231         get_regions_for_action (rs);
3232
3233         if (rs.empty()) {
3234                 return;
3235         }
3236
3237         begin_reversible_command (_("remove sync"));
3238         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3239
3240                 XMLNode &before = (*i)->region()->playlist()->get_state();
3241                 (*i)->region()->clear_sync_position ();
3242                 XMLNode &after = (*i)->region()->playlist()->get_state();
3243                 session->add_command(new MementoCommand<Playlist>(*((*i)->region()->playlist()), &before, &after));
3244         }
3245         commit_reversible_command ();
3246 }
3247
3248 void
3249 Editor::naturalize ()
3250 {
3251         RegionSelection rs;
3252
3253         get_regions_for_action (rs);
3254
3255         if (rs.empty()) {
3256                 return;
3257         }
3258
3259         begin_reversible_command (_("naturalize"));
3260         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3261                 XMLNode &before = (*i)->region()->get_state();
3262                 (*i)->region()->move_to_natural_position (this);
3263                 XMLNode &after = (*i)->region()->get_state();
3264                 session->add_command (new MementoCommand<Region>(*((*i)->region().get()), &before, &after));
3265         }
3266         commit_reversible_command ();
3267 }
3268
3269 void
3270 Editor::align (RegionPoint what)
3271 {
3272         RegionSelection rs;
3273
3274         get_regions_for_action (rs);
3275         nframes64_t where = get_preferred_edit_position();
3276
3277         if (!rs.empty()) {
3278                 align_selection (what, where, rs);
3279         } else {
3280
3281                 RegionSelection rs;
3282                 get_regions_at (rs, where, selection->tracks);
3283                 align_selection (what, where, rs);
3284         }
3285 }
3286
3287 void
3288 Editor::align_relative (RegionPoint what)
3289 {
3290         nframes64_t where = get_preferred_edit_position();
3291         RegionSelection rs;
3292
3293         get_regions_for_action (rs);
3294
3295         if (!rs.empty()) {
3296                 align_selection_relative (what, where, rs);
3297         }
3298 }
3299
3300 struct RegionSortByTime {
3301     bool operator() (const RegionView* a, const RegionView* b) {
3302             return a->region()->position() < b->region()->position();
3303     }
3304 };
3305
3306 void
3307 Editor::align_selection_relative (RegionPoint point, nframes64_t position, const RegionSelection& rs)
3308 {
3309         if (rs.empty()) {
3310                 return;
3311         }
3312
3313         nframes64_t distance = 0;
3314         nframes64_t pos = 0;
3315         int dir = 1;
3316
3317         list<RegionView*> sorted;
3318         rs.by_position (sorted);
3319
3320         boost::shared_ptr<Region> r ((*sorted.begin())->region());
3321
3322         switch (point) {
3323         case Start:
3324                 pos = position;
3325                 if (position > r->position()) {
3326                         distance = position - r->position();
3327                 } else {
3328                         distance = r->position() - position;
3329                         dir = -1;
3330                 }
3331                 break;
3332
3333         case End:
3334                 if (position > r->last_frame()) {
3335                         distance = position - r->last_frame();
3336                         pos = r->position() + distance;
3337                 } else {
3338                         distance = r->last_frame() - position;
3339                         pos = r->position() - distance;
3340                         dir = -1;
3341                 }
3342                 break;
3343
3344         case SyncPoint:
3345                 pos = r->adjust_to_sync (position);
3346                 if (pos > r->position()) {
3347                         distance = pos - r->position();
3348                 } else {
3349                         distance = r->position() - pos;
3350                         dir = -1;
3351                 }
3352                 break;
3353         }
3354
3355         if (pos == r->position()) {
3356                 return;
3357         }
3358
3359         begin_reversible_command (_("align selection (relative)"));
3360
3361         /* move first one specially */
3362
3363         XMLNode &before = r->playlist()->get_state();
3364         r->set_position (pos, this);
3365         XMLNode &after = r->playlist()->get_state();
3366         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
3367
3368         /* move rest by the same amount */
3369
3370         sorted.pop_front();
3371
3372         for (list<RegionView*>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
3373
3374                 boost::shared_ptr<Region> region ((*i)->region());
3375
3376                 XMLNode &before = region->playlist()->get_state();
3377
3378                 if (dir > 0) {
3379                         region->set_position (region->position() + distance, this);
3380                 } else {
3381                         region->set_position (region->position() - distance, this);
3382                 }
3383
3384                 XMLNode &after = region->playlist()->get_state();
3385                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3386
3387         }
3388
3389         commit_reversible_command ();
3390 }
3391
3392 void
3393 Editor::align_selection (RegionPoint point, nframes64_t position, const RegionSelection& rs)
3394 {
3395         if (rs.empty()) {
3396                 return;
3397         }
3398
3399         begin_reversible_command (_("align selection"));
3400
3401         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
3402                 align_region_internal ((*i)->region(), point, position);
3403         }
3404
3405         commit_reversible_command ();
3406 }
3407
3408 void
3409 Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, nframes64_t position)
3410 {
3411         begin_reversible_command (_("align region"));
3412         align_region_internal (region, point, position);
3413         commit_reversible_command ();
3414 }
3415
3416 void
3417 Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, nframes64_t position)
3418 {
3419         XMLNode &before = region->playlist()->get_state();
3420
3421         switch (point) {
3422         case SyncPoint:
3423                 region->set_position (region->adjust_to_sync (position), this);
3424                 break;
3425
3426         case End:
3427                 if (position > region->length()) {
3428                         region->set_position (position - region->length(), this);
3429                 }
3430                 break;
3431
3432         case Start:
3433                 region->set_position (position, this);
3434                 break;
3435         }
3436
3437         XMLNode &after = region->playlist()->get_state();
3438         session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3439 }
3440
3441 /** Trim the end of the selected regions to the position of the edit cursor */
3442 void
3443 Editor::trim_region_to_loop ()
3444 {
3445         Location* loc = session->locations()->auto_loop_location();
3446         if (!loc) {
3447                 return;
3448         }
3449         trim_region_to_location (*loc, _("trim to loop"));
3450 }
3451
3452 void
3453 Editor::trim_region_to_punch ()
3454 {
3455         Location* loc = session->locations()->auto_punch_location();
3456         if (!loc) {
3457                 return;
3458         }
3459         trim_region_to_location (*loc, _("trim to punch"));
3460 }
3461 void
3462 Editor::trim_region_to_location (const Location& loc, const char* str)
3463 {
3464         RegionSelection rs;
3465
3466         get_regions_for_action (rs);
3467
3468         begin_reversible_command (str);
3469
3470         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3471                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3472
3473                 if (!arv) {
3474                         continue;
3475                 }
3476
3477                 /* require region to span proposed trim */
3478
3479                 switch (arv->region()->coverage (loc.start(), loc.end())) {
3480                 case OverlapInternal:
3481                         break;
3482                 default:
3483                         continue;
3484                 }
3485
3486                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3487
3488                 if (!atav) {
3489                         return;
3490                 }
3491
3492                 float speed = 1.0;
3493                 nframes64_t start;
3494                 nframes64_t end;
3495
3496                 if (atav->get_diskstream() != 0) {
3497                         speed = atav->get_diskstream()->speed();
3498                 }
3499
3500                 start = session_frame_to_track_frame (loc.start(), speed);
3501                 end = session_frame_to_track_frame (loc.end(), speed);
3502
3503                 XMLNode &before = arv->region()->playlist()->get_state();
3504                 arv->region()->trim_to (start, (end - start), this);
3505                 XMLNode &after = arv->region()->playlist()->get_state();
3506                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3507         }
3508
3509         commit_reversible_command ();
3510 }
3511
3512 void
3513 Editor::trim_region_to_edit_point ()
3514 {
3515         RegionSelection rs;
3516
3517         get_regions_for_action (rs);
3518
3519         nframes64_t where = get_preferred_edit_position();
3520
3521         begin_reversible_command (_("trim region start to edit point"));
3522
3523         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3524                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3525
3526                 if (!arv) {
3527                         continue;
3528                 }
3529
3530                 /* require region to cover trim */
3531
3532                 if (!arv->region()->covers (where)) {
3533                         continue;
3534                 }
3535
3536                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3537
3538                 if (!atav) {
3539                         return;
3540                 }
3541
3542                 float speed = 1.0;
3543
3544                 if (atav->get_diskstream() != 0) {
3545                         speed = atav->get_diskstream()->speed();
3546                 }
3547
3548                 XMLNode &before = arv->region()->playlist()->get_state();
3549                 arv->region()->trim_end( session_frame_to_track_frame(where, speed), this);
3550                 XMLNode &after = arv->region()->playlist()->get_state();
3551                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3552         }
3553
3554         commit_reversible_command ();
3555 }
3556
3557 void
3558 Editor::trim_region_from_edit_point ()
3559 {
3560         RegionSelection rs;
3561
3562         get_regions_for_action (rs);
3563
3564         nframes64_t where = get_preferred_edit_position();
3565
3566         begin_reversible_command (_("trim region end to edit point"));
3567
3568         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3569                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3570
3571                 if (!arv) {
3572                         continue;
3573                 }
3574
3575                 /* require region to cover trim */
3576
3577                 if (!arv->region()->covers (where)) {
3578                         continue;
3579                 }
3580
3581                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3582
3583                 if (!atav) {
3584                         return;
3585                 }
3586
3587                 float speed = 1.0;
3588
3589                 if (atav->get_diskstream() != 0) {
3590                         speed = atav->get_diskstream()->speed();
3591                 }
3592
3593                 XMLNode &before = arv->region()->playlist()->get_state();
3594                 arv->region()->trim_front ( session_frame_to_track_frame(where, speed), this);
3595                 XMLNode &after = arv->region()->playlist()->get_state();
3596                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3597         }
3598
3599         commit_reversible_command ();
3600 }
3601
3602 void
3603 Editor::unfreeze_route ()
3604 {
3605         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3606                 return;
3607         }
3608
3609         clicked_routeview->audio_track()->unfreeze ();
3610 }
3611
3612 void*
3613 Editor::_freeze_thread (void* arg)
3614 {
3615         PBD::ThreadCreated (pthread_self(), X_("Freeze"));
3616         return static_cast<Editor*>(arg)->freeze_thread ();
3617 }
3618
3619 void*
3620 Editor::freeze_thread ()
3621 {
3622         clicked_routeview->audio_track()->freeze (*current_interthread_info);
3623         return 0;
3624 }
3625
3626 gint
3627 Editor::freeze_progress_timeout (void *arg)
3628 {
3629         interthread_progress_bar.set_fraction (current_interthread_info->progress/100);
3630         return !(current_interthread_info->done || current_interthread_info->cancel);
3631 }
3632
3633 void
3634 Editor::freeze_route ()
3635 {
3636         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3637                 return;
3638         }
3639
3640         InterThreadInfo itt;
3641
3642         if (interthread_progress_window == 0) {
3643                 build_interthread_progress_window ();
3644         }
3645
3646         WindowTitle title(Glib::get_application_name());
3647         title += _("Freeze");
3648         interthread_progress_window->set_title (title.get_string());
3649         interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
3650         interthread_progress_window->show_all ();
3651         interthread_progress_bar.set_fraction (0.0f);
3652         interthread_progress_label.set_text ("");
3653         interthread_cancel_label.set_text (_("Cancel Freeze"));
3654         current_interthread_info = &itt;
3655
3656         interthread_progress_connection =
3657           Glib::signal_timeout().connect (bind (mem_fun(*this, &Editor::freeze_progress_timeout), (gpointer) 0), 100);
3658
3659         itt.done = false;
3660         itt.cancel = false;
3661         itt.progress = 0.0f;
3662
3663         pthread_attr_t attr;
3664         pthread_attr_init(&attr);
3665         pthread_attr_setstacksize(&attr, 500000);
3666
3667         pthread_create (&itt.thread, &attr, _freeze_thread, this);
3668
3669         pthread_attr_destroy(&attr);
3670
3671         track_canvas->get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
3672
3673         while (!itt.done && !itt.cancel) {
3674                 gtk_main_iteration ();
3675         }
3676
3677         interthread_progress_connection.disconnect ();
3678         interthread_progress_window->hide_all ();
3679         current_interthread_info = 0;
3680         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
3681 }
3682
3683 void
3684 Editor::bounce_range_selection (bool replace)
3685 {
3686         if (selection->time.empty()) {
3687                 return;
3688         }
3689
3690         TrackSelection views = selection->tracks;
3691
3692         nframes64_t start = selection->time[clicked_selection].start;
3693         nframes64_t end = selection->time[clicked_selection].end;
3694         nframes64_t cnt = end - start + 1;
3695
3696         begin_reversible_command (_("bounce range"));
3697
3698         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3699
3700                 RouteTimeAxisView* rtv;
3701
3702                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*i)) == 0) {
3703                         continue;
3704                 }
3705
3706                 boost::shared_ptr<Playlist> playlist;
3707
3708                 if ((playlist = rtv->playlist()) == 0) {
3709                         return;
3710                 }
3711
3712                 InterThreadInfo itt;
3713
3714                 itt.done = false;
3715                 itt.cancel = false;
3716                 itt.progress = false;
3717
3718                 XMLNode &before = playlist->get_state();
3719                 boost::shared_ptr<Region> r = rtv->track()->bounce_range (start, start+cnt, itt);
3720
3721                 if (replace) {
3722                         list<AudioRange> ranges;
3723                         ranges.push_back (AudioRange (start, start+cnt, 0));
3724                         playlist->cut (ranges); // discard result
3725                         playlist->add_region (r, start);
3726                 }
3727
3728                 XMLNode &after = playlist->get_state();
3729                 session->add_command (new MementoCommand<Playlist> (*playlist, &before, &after));
3730         }
3731
3732         commit_reversible_command ();
3733 }
3734
3735 /** Cut selected regions, automation points or a time range */
3736 void
3737 Editor::cut ()
3738 {
3739         cut_copy (Cut);
3740 }
3741
3742 /** Copy selected regions, automation points or a time range */
3743 void
3744 Editor::copy ()
3745 {
3746         cut_copy (Copy);
3747 }
3748
3749
3750 /** @return true if a Cut, Copy or Clear is possible */
3751 bool
3752 Editor::can_cut_copy () const
3753 {
3754         switch (current_mouse_mode()) {
3755
3756         case MouseObject:
3757                 if (!selection->regions.empty() || !selection->points.empty()) {
3758                         return true;
3759                 }
3760                 break;
3761
3762         case MouseRange:
3763                 if (!selection->time.empty()) {
3764                         return true;
3765                 }
3766                 break;
3767
3768         default:
3769                 break;
3770         }
3771
3772         return false;
3773 }
3774
3775
3776 /** Cut, copy or clear selected regions, automation points or a time range.
3777  * @param op Operation (Cut, Copy or Clear)
3778  */
3779 void
3780 Editor::cut_copy (CutCopyOp op)
3781 {
3782         /* only cancel selection if cut/copy is successful.*/
3783
3784         string opname;
3785
3786         switch (op) {
3787         case Cut:
3788                 opname = _("cut");
3789                 break;
3790         case Copy:
3791                 opname = _("copy");
3792                 break;
3793         case Clear:
3794                 opname = _("clear");
3795                 break;
3796         }
3797
3798         /* if we're deleting something, and the mouse is still pressed,
3799            the thing we started a drag for will be gone when we release
3800            the mouse button(s). avoid this. see part 2 at the end of
3801            this function.
3802         */
3803
3804         if (op == Cut || op == Clear) {
3805                 if (drag_info.item) {
3806                         drag_info.item->ungrab (0);
3807                         drag_info.item = 0;
3808                 }
3809         }
3810
3811         cut_buffer->clear ();
3812
3813         if (entered_marker) {
3814
3815                 /* cut/delete op while pointing at a marker */
3816
3817                 bool ignored;
3818                 Location* loc = find_location_from_marker (entered_marker, ignored);
3819
3820                 if (session && loc) {
3821                         Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::really_remove_marker), loc));
3822                 }
3823
3824                 break_drag ();
3825
3826                 return;
3827         }
3828
3829         RegionSelection rs;
3830
3831         /* we only want to cut regions if some are selected */
3832
3833         if (!selection->regions.empty()) {
3834                 get_regions_for_action (rs);
3835         }
3836
3837         switch (current_mouse_mode()) {
3838         case MouseObject:
3839                 if (!rs.empty() || !selection->points.empty()) {
3840
3841                         begin_reversible_command (opname + _(" objects"));
3842
3843                         if (!rs.empty()) {
3844                                 cut_copy_regions (op, rs);
3845
3846                                 if (op == Cut) {
3847                                         selection->clear_regions ();
3848                                 }
3849                         }
3850
3851                         if (!selection->points.empty()) {
3852                                 cut_copy_points (op);
3853
3854                                 if (op == Cut) {
3855                                         selection->clear_points ();
3856                                 }
3857                         }
3858
3859                         commit_reversible_command ();
3860                         break; // terminate case statement here
3861                 }
3862                 if (!selection->time.empty()) {
3863                         /* don't cause suprises */
3864                         break;
3865                 }
3866                 // fall thru if there was nothing selected
3867
3868         case MouseRange:
3869                 if (selection->time.empty()) {
3870                         nframes64_t start, end;
3871                         if (!get_edit_op_range (start, end)) {
3872                                 return;
3873                         }
3874                         selection->set ((TimeAxisView*) 0, start, end);
3875                 }
3876
3877                 begin_reversible_command (opname + _(" range"));
3878                 cut_copy_ranges (op);
3879                 commit_reversible_command ();
3880
3881                 if (op == Cut) {
3882                         selection->clear_time ();
3883                 }
3884
3885                 break;
3886
3887         default:
3888                 break;
3889         }
3890
3891
3892         if (op == Cut || op == Clear) {
3893                 break_drag ();
3894         }
3895 }
3896
3897 /** Cut, copy or clear selected automation points.
3898  * @param op Operation (Cut, Copy or Clear)
3899  */
3900 void
3901 Editor::cut_copy_points (CutCopyOp op)
3902 {
3903         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
3904
3905                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
3906
3907                 if (atv) {
3908                         atv->cut_copy_clear_objects (selection->points, op);
3909                 }
3910         }
3911 }
3912
3913 struct PlaylistState {
3914     boost::shared_ptr<Playlist> playlist;
3915     XMLNode*  before;
3916 };
3917
3918 struct lt_playlist {
3919     bool operator () (const PlaylistState& a, const PlaylistState& b) {
3920             return a.playlist < b.playlist;
3921     }
3922 };
3923
3924 struct PlaylistMapping {
3925     TimeAxisView* tv;
3926     boost::shared_ptr<Playlist> pl;
3927
3928     PlaylistMapping (TimeAxisView* tvp) : tv (tvp) {}
3929 };
3930
3931
3932 /** Cut, copy or clear selected regions.
3933  * @param op Operation (Cut, Copy or Clear)
3934  */
3935 void
3936 Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
3937 {
3938         /* we can't use a std::map here because the ordering is important, and we can't trivially sort
3939            a map when we want ordered access to both elements. i think.
3940         */
3941
3942         vector<PlaylistMapping> pmap;
3943
3944         nframes64_t first_position = max_frames;
3945
3946         set<PlaylistState, lt_playlist> freezelist;
3947         pair<set<PlaylistState, lt_playlist>::iterator,bool> insert_result;
3948
3949         /* get ordering correct before we cut/copy */
3950
3951         rs.sort_by_position_and_track ();
3952
3953         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3954
3955                 first_position = min ((nframes64_t) (*x)->region()->position(), first_position);
3956
3957                 if (op == Cut || op == Clear) {
3958                         boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3959
3960                         if (pl) {
3961
3962                                 PlaylistState before;
3963                                 before.playlist = pl;
3964                                 before.before = &pl->get_state();
3965
3966                                 insert_result = freezelist.insert (before);
3967
3968                                 if (insert_result.second) {
3969                                         pl->freeze ();
3970                                 }
3971                         }
3972                 }
3973
3974                 TimeAxisView* tv = &(*x)->get_trackview();
3975                 vector<PlaylistMapping>::iterator z;
3976
3977                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3978                         if ((*z).tv == tv) {
3979                                 break;
3980                         }
3981                 }
3982
3983                 if (z == pmap.end()) {
3984                         pmap.push_back (PlaylistMapping (tv));
3985                 }
3986         }
3987
3988         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ) {
3989
3990                 boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3991
3992                 if (!pl) {
3993                         /* impossible, but this handles it for the future */
3994                         continue;
3995                 }
3996
3997                 TimeAxisView& tv = (*x)->get_trackview();
3998                 boost::shared_ptr<Playlist> npl;
3999                 RegionSelection::iterator tmp;
4000
4001                 tmp = x;
4002                 ++tmp;
4003
4004                 vector<PlaylistMapping>::iterator z;
4005
4006                 for (z = pmap.begin(); z != pmap.end(); ++z) {
4007                         if ((*z).tv == &tv) {
4008                                 break;
4009                         }
4010                 }
4011
4012                 assert (z != pmap.end());
4013
4014                 if (!(*z).pl) {
4015                         npl = PlaylistFactory::create (pl->data_type(), *session, "cutlist", true);
4016                         npl->freeze();
4017                         (*z).pl = npl;
4018                 } else {
4019                         npl = (*z).pl;
4020                 }
4021
4022                 boost::shared_ptr<Region> r = (*x)->region();
4023                 boost::shared_ptr<Region> _xx;
4024
4025                 assert (r != 0);
4026
4027                 switch (op) {
4028                 case Cut:
4029                         _xx = RegionFactory::create (r);
4030                         npl->add_region (_xx, r->position() - first_position);
4031                         pl->remove_region (r);
4032                         break;
4033
4034                 case Copy:
4035                         /* copy region before adding, so we're not putting same object into two different playlists */
4036                         npl->add_region (RegionFactory::create (r), r->position() - first_position);
4037                         break;
4038
4039                 case Clear:
4040                         pl->remove_region (r);
4041                         break;
4042                 }
4043
4044                 x = tmp;
4045         }
4046
4047         list<boost::shared_ptr<Playlist> > foo;
4048
4049         /* the pmap is in the same order as the tracks in which selected regions occured */
4050
4051         for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
4052                 (*i).pl->thaw();
4053                 foo.push_back ((*i).pl);
4054         }
4055
4056
4057         if (!foo.empty()) {
4058                 cut_buffer->set (foo);
4059         }
4060
4061         for (set<PlaylistState, lt_playlist>::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
4062                 (*pl).playlist->thaw ();
4063                 session->add_command (new MementoCommand<Playlist>(*(*pl).playlist, (*pl).before, &(*pl).playlist->get_state()));
4064         }
4065 }
4066
4067 void
4068 Editor::cut_copy_ranges (CutCopyOp op)
4069 {
4070         TrackSelection* ts;
4071         TrackSelection entered;
4072
4073         if (selection->tracks.empty()) {
4074                 if (!entered_track) {
4075                         return;
4076                 }
4077                 entered.push_back (entered_track);
4078                 ts = &entered;
4079         } else {
4080                 ts = &selection->tracks;
4081         }
4082
4083         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
4084                 (*i)->cut_copy_clear (*selection, op);
4085         }
4086 }
4087
4088 void
4089 Editor::paste (float times)
4090 {
4091         paste_internal (get_preferred_edit_position(), times);
4092 }
4093
4094 void
4095 Editor::mouse_paste ()
4096 {
4097         nframes64_t where;
4098         bool ignored;
4099
4100         if (!mouse_frame (where, ignored)) {
4101                 return;
4102         }
4103
4104         snap_to (where);
4105         paste_internal (where, 1);
4106 }
4107
4108 void
4109 Editor::paste_internal (nframes64_t position, float times)
4110 {
4111         bool commit = false;
4112
4113         if (cut_buffer->empty()) {
4114                 return;
4115         }
4116
4117         if (position == max_frames) {
4118                 position = get_preferred_edit_position();
4119         }
4120
4121         begin_reversible_command (_("paste"));
4122
4123         TrackSelection ts;
4124         TrackSelection::iterator i;
4125         size_t nth;
4126
4127         /* get everything in the correct order */
4128
4129
4130         if (!selection->tracks.empty()) {
4131                 sort_track_selection ();
4132                 ts = selection->tracks;
4133         } else if (entered_track) {
4134                 ts.push_back (entered_track);
4135         }
4136
4137         for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
4138
4139                 /* undo/redo is handled by individual tracks */
4140
4141                 if ((*i)->paste (position, times, *cut_buffer, nth)) {
4142                         commit = true;
4143                 }
4144         }
4145
4146         if (commit) {
4147                 commit_reversible_command ();
4148         }
4149 }
4150
4151 void
4152 Editor::paste_named_selection (float times)
4153 {
4154         TrackSelection::iterator t;
4155
4156         Glib::RefPtr<TreeSelection> selected = named_selection_display.get_selection();
4157
4158         if (selected->count_selected_rows() != 1 || selection->tracks.empty()) {
4159                 return;
4160         }
4161
4162         TreeModel::iterator i = selected->get_selected();
4163         NamedSelection* ns = (*i)[named_selection_columns.selection];
4164
4165         list<boost::shared_ptr<Playlist> >::iterator chunk;
4166         list<boost::shared_ptr<Playlist> >::iterator tmp;
4167
4168         chunk = ns->playlists.begin();
4169
4170         begin_reversible_command (_("paste chunk"));
4171
4172         sort_track_selection ();
4173
4174         for (t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
4175
4176                 RouteTimeAxisView* rtv;
4177                 boost::shared_ptr<Playlist> pl;
4178                 boost::shared_ptr<AudioPlaylist> apl;
4179
4180                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*t)) == 0) {
4181                         continue;
4182                 }
4183
4184                 if ((pl = rtv->playlist()) == 0) {
4185                         continue;
4186                 }
4187
4188                 if ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) == 0) {
4189                         continue;
4190                 }
4191
4192                 tmp = chunk;
4193                 ++tmp;
4194
4195                 XMLNode &before = apl->get_state();
4196                 apl->paste (*chunk, get_preferred_edit_position(), times);
4197                 session->add_command(new MementoCommand<AudioPlaylist>(*apl, &before, &apl->get_state()));
4198
4199                 if (tmp != ns->playlists.end()) {
4200                         chunk = tmp;
4201                 }
4202         }
4203
4204         commit_reversible_command();
4205 }
4206
4207 void
4208 Editor::duplicate_some_regions (RegionSelection& regions, float times)
4209 {
4210         boost::shared_ptr<Playlist> playlist;
4211         RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
4212         RegionSelection foo;
4213
4214         begin_reversible_command (_("duplicate region"));
4215
4216         selection->clear_regions ();
4217
4218         for (RegionSelection::iterator i = sel.begin(); i != sel.end(); ++i) {
4219
4220                 boost::shared_ptr<Region> r ((*i)->region());
4221
4222                 TimeAxisView& tv = (*i)->get_time_axis_view();
4223                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
4224                 latest_regionviews.clear ();
4225                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
4226
4227                 playlist = (*i)->region()->playlist();
4228                 XMLNode &before = playlist->get_state();
4229                 playlist->duplicate (r, r->last_frame(), times);
4230                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
4231
4232                 c.disconnect ();
4233
4234                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
4235         }
4236
4237         commit_reversible_command ();
4238
4239         if (!foo.empty()) {
4240                 selection->set (foo);
4241         }
4242 }
4243
4244 void
4245 Editor::duplicate_selection (float times)
4246 {
4247         if (selection->time.empty() || selection->tracks.empty()) {
4248                 return;
4249         }
4250
4251         boost::shared_ptr<Playlist> playlist;
4252         vector<boost::shared_ptr<Region> > new_regions;
4253         vector<boost::shared_ptr<Region> >::iterator ri;
4254
4255         create_region_from_selection (new_regions);
4256
4257         if (new_regions.empty()) {
4258                 return;
4259         }
4260
4261         begin_reversible_command (_("duplicate selection"));
4262
4263         ri = new_regions.begin();
4264
4265         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4266                 if ((playlist = (*i)->playlist()) == 0) {
4267                         continue;
4268                 }
4269                 XMLNode &before = playlist->get_state();
4270                 playlist->duplicate (*ri, selection->time[clicked_selection].end, times);
4271                 XMLNode &after = playlist->get_state();
4272                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4273
4274                 ++ri;
4275                 if (ri == new_regions.end()) {
4276                         --ri;
4277                 }
4278         }
4279
4280         commit_reversible_command ();
4281 }
4282
4283 void
4284 Editor::reset_point_selection ()
4285 {
4286         /* reset all selected points to the relevant default value */
4287
4288         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
4289
4290                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
4291
4292                 if (atv) {
4293                         atv->reset_objects (selection->points);
4294                 }
4295         }
4296 }
4297
4298 void
4299 Editor::center_playhead ()
4300 {
4301         float page = canvas_width * frames_per_unit;
4302         center_screen_internal (playhead_cursor->current_frame, page);
4303 }
4304
4305 void
4306 Editor::center_edit_point ()
4307 {
4308         float page = canvas_width * frames_per_unit;
4309         center_screen_internal (get_preferred_edit_position(), page);
4310 }
4311
4312 void
4313 Editor::clear_playlist (boost::shared_ptr<Playlist> playlist)
4314 {
4315         begin_reversible_command (_("clear playlist"));
4316         XMLNode &before = playlist->get_state();
4317         playlist->clear ();
4318         XMLNode &after = playlist->get_state();
4319         session->add_command (new MementoCommand<Playlist>(*playlist.get(), &before, &after));
4320         commit_reversible_command ();
4321 }
4322
4323 void
4324 Editor::nudge_track (bool use_edit, bool forwards)
4325 {
4326         boost::shared_ptr<Playlist> playlist;
4327         nframes64_t distance;
4328         nframes64_t next_distance;
4329         nframes64_t start;
4330
4331         if (use_edit) {
4332                 start = get_preferred_edit_position();
4333         } else {
4334                 start = 0;
4335         }
4336
4337         if ((distance = get_nudge_distance (start, next_distance)) == 0) {
4338                 return;
4339         }
4340
4341         if (selection->tracks.empty()) {
4342                 return;
4343         }
4344
4345         begin_reversible_command (_("nudge track"));
4346
4347         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4348
4349                 if ((playlist = (*i)->playlist()) == 0) {
4350                         continue;
4351                 }
4352
4353                 XMLNode &before = playlist->get_state();
4354                 playlist->nudge_after (start, distance, forwards);
4355                 XMLNode &after = playlist->get_state();
4356                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4357         }
4358
4359         commit_reversible_command ();
4360 }
4361
4362 void
4363 Editor::remove_last_capture ()
4364 {
4365         vector<string> choices;
4366         string prompt;
4367
4368         if (!session) {
4369                 return;
4370         }
4371
4372         if (Config->get_verify_remove_last_capture()) {
4373                 prompt  = _("Do you really want to destroy the last capture?"
4374                             "\n(This is destructive and cannot be undone)");
4375
4376                 choices.push_back (_("No, do nothing."));
4377                 choices.push_back (_("Yes, destroy it."));
4378
4379                 Gtkmm2ext::Choice prompter (prompt, choices);
4380
4381                 if (prompter.run () == 1) {
4382                         session->remove_last_capture ();
4383                 }
4384
4385         } else {
4386                 session->remove_last_capture();
4387         }
4388 }
4389
4390 void
4391 Editor::normalize_region ()
4392 {
4393         RegionSelection rs;
4394
4395         get_regions_for_action (rs);
4396
4397         if (!session) {
4398                 return;
4399         }
4400
4401         if (rs.empty()) {
4402                 return;
4403         }
4404
4405         begin_reversible_command (_("normalize"));
4406
4407         track_canvas->get_window()->set_cursor (*wait_cursor);
4408         gdk_flush ();
4409
4410         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4411                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4412                 if (!arv)
4413                         continue;
4414                 XMLNode &before = arv->region()->get_state();
4415                 arv->audio_region()->normalize_to (0.0f);
4416                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4417         }
4418
4419         commit_reversible_command ();
4420         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
4421 }
4422
4423
4424 void
4425 Editor::denormalize_region ()
4426 {
4427         if (!session) {
4428                 return;
4429         }
4430
4431         RegionSelection rs;
4432
4433         get_regions_for_action (rs);
4434
4435         if (rs.empty()) {
4436                 return;
4437         }
4438
4439         begin_reversible_command ("denormalize");
4440
4441         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4442                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4443                 if (!arv)
4444                         continue;
4445                 XMLNode &before = arv->region()->get_state();
4446                 arv->audio_region()->set_scale_amplitude (1.0f);
4447                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4448         }
4449
4450         commit_reversible_command ();
4451 }
4452
4453 void
4454 Editor::adjust_region_scale_amplitude (bool up)
4455 {
4456         if (!session) {
4457                 return;
4458         }
4459
4460         RegionSelection rs;
4461
4462         get_regions_for_action (rs);
4463
4464         if (rs.empty()) {
4465                 return;
4466         }
4467
4468         begin_reversible_command ("denormalize");
4469
4470         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4471                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4472                 if (!arv)
4473                         continue;
4474                 XMLNode &before = arv->region()->get_state();
4475
4476                 double fraction = gain_to_slider_position (arv->audio_region()->scale_amplitude ());
4477
4478                 if (up) {
4479                         fraction += 0.05;
4480                         fraction = min (fraction, 1.0);
4481                 } else {
4482                         fraction -= 0.05;
4483                         fraction = max (fraction, 0.0);
4484                 }
4485
4486                 if (!up && fraction <= 0) {
4487                         continue;
4488                 }
4489
4490                 fraction = slider_position_to_gain (fraction);
4491                 fraction = coefficient_to_dB (fraction);
4492                 fraction = dB_to_coefficient (fraction);
4493
4494                 if (up && fraction >= 2.0) {
4495                         continue;
4496                 }
4497
4498                 arv->audio_region()->set_scale_amplitude (fraction);
4499                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4500         }
4501
4502         commit_reversible_command ();
4503 }
4504
4505
4506 void
4507 Editor::reverse_region ()
4508 {
4509         if (!session) {
4510                 return;
4511         }
4512
4513         Reverse rev (*session);
4514         apply_filter (rev, _("reverse regions"));
4515 }
4516
4517
4518 void
4519 Editor::quantize_region ()
4520 {
4521         if (!session) {
4522                 return;
4523         }
4524
4525         // FIXME: varying meter?
4526         Quantize quant (*session, snap_length_beats(0));
4527         apply_filter (quant, _("quantize regions"));
4528 }
4529
4530 void
4531 Editor::apply_filter (Filter& filter, string command)
4532 {
4533         RegionSelection rs;
4534
4535         get_regions_for_action (rs);
4536
4537         if (rs.empty()) {
4538                 return;
4539         }
4540
4541         begin_reversible_command (command);
4542
4543         track_canvas->get_window()->set_cursor (*wait_cursor);
4544         gdk_flush ();
4545
4546         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4547                 RegionSelection::iterator tmp = r;
4548                 ++tmp;
4549
4550                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
4551                 if (mrv) {
4552                         if (mrv->midi_region()->apply(filter) == 0) {
4553                                 mrv->redisplay_model();
4554                         }
4555                 }
4556
4557                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4558                 if (arv) {
4559                         boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
4560
4561                         if (arv->audio_region()->apply (filter) == 0) {
4562
4563                                 XMLNode &before = playlist->get_state();
4564                                 playlist->replace_region (arv->region(), filter.results.front(), arv->region()->position());
4565                                 XMLNode &after = playlist->get_state();
4566                                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
4567                         } else {
4568                                 goto out;
4569                         }
4570                 }
4571
4572                 r = tmp;
4573         }
4574
4575         commit_reversible_command ();
4576         rs.clear ();
4577
4578   out:
4579         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
4580 }
4581
4582 void
4583 Editor::region_selection_op (void (Region::*pmf)(void))
4584 {
4585         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4586                 Region* region = (*i)->region().get();
4587                 (region->*pmf)();
4588         }
4589 }
4590
4591
4592 void
4593 Editor::region_selection_op (void (Region::*pmf)(void*), void *arg)
4594 {
4595         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4596                 Region* region = (*i)->region().get();
4597                 (region->*pmf)(arg);
4598         }
4599 }
4600
4601 void
4602 Editor::region_selection_op (void (Region::*pmf)(bool), bool yn)
4603 {
4604         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4605                 Region* region = (*i)->region().get();
4606                 (region->*pmf)(yn);
4607         }
4608 }
4609
4610 void
4611 Editor::external_edit_region ()
4612 {
4613         /* more to come */
4614 }
4615
4616 void
4617 Editor::brush (nframes64_t pos)
4618 {
4619         RegionSelection sel;
4620         RegionSelection rs;
4621
4622         get_regions_for_action (rs);
4623
4624         snap_to (pos);
4625
4626         if (rs.empty()) {
4627                 return;
4628         }
4629
4630         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4631                 mouse_brush_insert_region ((*i), pos);
4632         }
4633 }
4634
4635 void
4636 Editor::reset_region_gain_envelopes ()
4637 {
4638         RegionSelection rs;
4639
4640         get_regions_for_action (rs);
4641
4642         if (!session || rs.empty()) {
4643                 return;
4644         }
4645
4646         session->begin_reversible_command (_("reset region gain"));
4647
4648         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4649                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4650                 if (arv) {
4651                         boost::shared_ptr<AutomationList> alist (arv->audio_region()->envelope());
4652                         XMLNode& before (alist->get_state());
4653
4654                         arv->audio_region()->set_default_envelope ();
4655                         session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
4656                 }
4657         }
4658
4659         session->commit_reversible_command ();
4660 }
4661
4662 void
4663 Editor::toggle_gain_envelope_visibility ()
4664 {
4665         RegionSelection rs;
4666
4667         get_regions_for_action (rs);
4668
4669         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4670                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4671                 if (arv) {
4672                         arv->set_envelope_visible (!arv->envelope_visible());
4673                 }
4674         }
4675 }
4676
4677 void
4678 Editor::toggle_gain_envelope_active ()
4679 {
4680         RegionSelection rs;
4681
4682         get_regions_for_action (rs);
4683
4684         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4685                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4686                 if (arv) {
4687                         arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
4688                 }
4689         }
4690 }
4691
4692 void
4693 Editor::toggle_region_lock ()
4694 {
4695         RegionSelection rs;
4696
4697         get_regions_for_action (rs);
4698
4699         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4700                 (*i)->region()->set_locked (!(*i)->region()->locked());
4701         }
4702 }
4703
4704 void
4705 Editor::set_region_lock_style (Region::PositionLockStyle ps)
4706 {
4707         RegionSelection rs;
4708
4709         get_regions_for_action (rs);
4710
4711         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4712                 (*i)->region()->set_position_lock_style (ps);
4713         }
4714 }
4715
4716
4717 void
4718 Editor::toggle_region_mute ()
4719 {
4720         RegionSelection rs;
4721
4722         get_regions_for_action (rs);
4723
4724         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4725                 (*i)->region()->set_muted (!(*i)->region()->muted());
4726         }
4727 }
4728
4729 void
4730 Editor::toggle_region_opaque ()
4731 {
4732         RegionSelection rs;
4733
4734         get_regions_for_action (rs);
4735
4736         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4737                 (*i)->region()->set_opaque (!(*i)->region()->opaque());
4738         }
4739 }
4740
4741 void
4742 Editor::set_fade_length (bool in)
4743 {
4744         RegionSelection rs;
4745
4746         get_regions_for_action (rs);
4747
4748         /* we need a region to measure the offset from the start */
4749
4750         RegionView* rv;
4751
4752         if (!rs.empty()) {
4753                 rv = rs.front();
4754         } else if (entered_regionview) {
4755                 rv = entered_regionview;
4756         } else {
4757                 return;
4758         }
4759
4760         nframes64_t pos = get_preferred_edit_position();
4761         nframes64_t len;
4762         char* cmd;
4763
4764         if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
4765                 /* edit point is outside the relevant region */
4766                 return;
4767         }
4768
4769         if (in) {
4770                 if (pos <= rv->region()->position()) {
4771                         /* can't do it */
4772                         return;
4773                 }
4774                 len = pos - rv->region()->position();
4775                 cmd = _("set fade in length");
4776         } else {
4777                 if (pos >= rv->region()->last_frame()) {
4778                         /* can't do it */
4779                         return;
4780                 }
4781                 len = rv->region()->last_frame() - pos;
4782                 cmd = _("set fade out length");
4783         }
4784
4785         begin_reversible_command (cmd);
4786
4787         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4788                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4789
4790                 if (!tmp) {
4791                         return;
4792                 }
4793
4794                 boost::shared_ptr<AutomationList> alist;
4795                 if (in) {
4796                         alist = tmp->audio_region()->fade_in();
4797                 } else {
4798                         alist = tmp->audio_region()->fade_out();
4799                 }
4800
4801                 XMLNode &before = alist->get_state();
4802
4803                 if (in) {
4804                         tmp->audio_region()->set_fade_in_length (len);
4805                         tmp->audio_region()->set_fade_in_active (true);
4806                 } else {
4807                         tmp->audio_region()->set_fade_out_length (len);
4808                         tmp->audio_region()->set_fade_out_active (true);
4809                 }
4810
4811                 XMLNode &after = alist->get_state();
4812                 session->add_command(new MementoCommand<AutomationList>(*alist, &before, &after));
4813         }
4814
4815         commit_reversible_command ();
4816 }
4817
4818 void
4819 Editor::toggle_fade_active (bool in)
4820 {
4821         RegionSelection rs;
4822
4823         get_regions_for_action (rs);
4824
4825         if (rs.empty()) {
4826                 return;
4827         }
4828
4829         const char* cmd = (in ? _("toggle fade in active") : _("toggle fade out active"));
4830         bool have_switch = false;
4831         bool yn = false;
4832
4833         begin_reversible_command (cmd);
4834
4835         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4836                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4837
4838                 if (!tmp) {
4839                         return;
4840                 }
4841
4842                 boost::shared_ptr<AudioRegion> region (tmp->audio_region());
4843
4844                 /* make the behaviour consistent across all regions */
4845
4846                 if (!have_switch) {
4847                         if (in) {
4848                                 yn = region->fade_in_active();
4849                         } else {
4850                                 yn = region->fade_out_active();
4851                         }
4852                         have_switch = true;
4853                 }
4854
4855                 XMLNode &before = region->get_state();
4856                 if (in) {
4857                         region->set_fade_in_active (!yn);
4858                 } else {
4859                         region->set_fade_out_active (!yn);
4860                 }
4861                 XMLNode &after = region->get_state();
4862                 session->add_command(new MementoCommand<AudioRegion>(*region.get(), &before, &after));
4863         }
4864
4865         commit_reversible_command ();
4866 }
4867
4868 void
4869 Editor::set_fade_in_shape (AudioRegion::FadeShape shape)
4870 {
4871         RegionSelection rs;
4872
4873         get_regions_for_action (rs);
4874
4875         if (rs.empty()) {
4876                 return;
4877         }
4878
4879         begin_reversible_command (_("set fade in shape"));
4880
4881         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4882                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4883
4884                 if (!tmp) {
4885                         return;
4886                 }
4887
4888                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
4889                 XMLNode &before = alist->get_state();
4890
4891                 tmp->audio_region()->set_fade_in_shape (shape);
4892
4893                 XMLNode &after = alist->get_state();
4894                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4895         }
4896
4897         commit_reversible_command ();
4898
4899 }
4900
4901 void
4902 Editor::set_fade_out_shape (AudioRegion::FadeShape shape)
4903 {
4904         RegionSelection rs;
4905
4906         get_regions_for_action (rs);
4907
4908         if (rs.empty()) {
4909                 return;
4910         }
4911
4912         begin_reversible_command (_("set fade out shape"));
4913
4914         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4915                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4916
4917                 if (!tmp) {
4918                         return;
4919                 }
4920
4921                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
4922                 XMLNode &before = alist->get_state();
4923
4924                 tmp->audio_region()->set_fade_out_shape (shape);
4925
4926                 XMLNode &after = alist->get_state();
4927                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4928         }
4929
4930         commit_reversible_command ();
4931 }
4932
4933 void
4934 Editor::set_fade_in_active (bool yn)
4935 {
4936         RegionSelection rs;
4937
4938         get_regions_for_action (rs);
4939
4940         if (rs.empty()) {
4941                 return;
4942         }
4943
4944         begin_reversible_command (_("set fade in active"));
4945
4946         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4947                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4948
4949                 if (!tmp) {
4950                         return;
4951                 }
4952
4953
4954                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4955
4956                 XMLNode &before = ar->get_state();
4957
4958                 ar->set_fade_in_active (yn);
4959
4960                 XMLNode &after = ar->get_state();
4961                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4962         }
4963
4964         commit_reversible_command ();
4965 }
4966
4967 void
4968 Editor::set_fade_out_active (bool yn)
4969 {
4970         RegionSelection rs;
4971
4972         get_regions_for_action (rs);
4973
4974         if (rs.empty()) {
4975                 return;
4976         }
4977
4978         begin_reversible_command (_("set fade out active"));
4979
4980         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4981                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4982
4983                 if (!tmp) {
4984                         return;
4985                 }
4986
4987                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4988
4989                 XMLNode &before = ar->get_state();
4990
4991                 ar->set_fade_out_active (yn);
4992
4993                 XMLNode &after = ar->get_state();
4994                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4995         }
4996
4997         commit_reversible_command ();
4998 }
4999
5000
5001 /** Update crossfade visibility after its configuration has been changed */
5002 void
5003 Editor::update_xfade_visibility ()
5004 {
5005         _xfade_visibility = Config->get_xfades_visible ();
5006
5007         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
5008                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
5009                 if (v) {
5010                         if (_xfade_visibility) {
5011                                 v->show_all_xfades ();
5012                         } else {
5013                                 v->hide_all_xfades ();
5014                         }
5015                 }
5016         }
5017 }
5018
5019 void
5020 Editor::set_edit_point ()
5021 {
5022         nframes64_t where;
5023         bool ignored;
5024
5025         if (!mouse_frame (where, ignored)) {
5026                 return;
5027         }
5028
5029         snap_to (where);
5030
5031         if (selection->markers.empty()) {
5032
5033                 mouse_add_new_marker (where);
5034
5035         } else {
5036                 bool ignored;
5037
5038                 Location* loc = find_location_from_marker (selection->markers.front(), ignored);
5039
5040                 if (loc) {
5041                         loc->move_to (where);
5042                 }
5043         }
5044 }
5045
5046 void
5047 Editor::set_playhead_cursor ()
5048 {
5049         if (entered_marker) {
5050                 session->request_locate (entered_marker->position(), session->transport_rolling());
5051         } else {
5052                 nframes64_t where;
5053                 bool ignored;
5054
5055                 if (!mouse_frame (where, ignored)) {
5056                         return;
5057                 }
5058
5059                 snap_to (where);
5060
5061                 if (session) {
5062                         session->request_locate (where, session->transport_rolling());
5063                 }
5064         }
5065 }
5066
5067 void
5068 Editor::split ()
5069 {
5070         RegionSelection rs;
5071
5072         get_regions_for_action (rs);
5073
5074         nframes64_t where = get_preferred_edit_position();
5075
5076         if (rs.empty()) {
5077                 return;
5078         }
5079
5080         split_regions_at (where, rs);
5081 }
5082
5083 void
5084 Editor::ensure_entered_track_selected (bool op_really_wants_one_track_if_none_are_selected)
5085 {
5086         if (entered_track && mouse_mode == MouseObject) {
5087                 if (!selection->tracks.empty()) {
5088                         if (!selection->selected (entered_track)) {
5089                                 selection->add (entered_track);
5090                         }
5091                 } else {
5092                         /* there is no selection, but this operation requires/prefers selected objects */
5093
5094                         if (op_really_wants_one_track_if_none_are_selected) {
5095                                 selection->set (entered_track);
5096                         }
5097                 }
5098         }
5099 }
5100
5101 void
5102 Editor::trim_region_front ()
5103 {
5104         trim_region (true);
5105 }
5106
5107 void
5108 Editor::trim_region_back ()
5109 {
5110         trim_region (false);
5111 }
5112
5113 void
5114 Editor::trim_region (bool front)
5115 {
5116         nframes64_t where = get_preferred_edit_position();
5117         RegionSelection rs;
5118
5119         get_regions_for_action (rs);
5120
5121         if (rs.empty()) {
5122                 return;
5123         }
5124
5125         begin_reversible_command (front ? _("trim front") : _("trim back"));
5126
5127         for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
5128                 if (!(*i)->region()->locked()) {
5129                         boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
5130                         XMLNode &before = pl->get_state();
5131                         if (front) {
5132                                 (*i)->region()->trim_front (where, this);
5133                         } else {
5134                                 (*i)->region()->trim_end (where, this);
5135                         }
5136                         XMLNode &after = pl->get_state();
5137                         session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
5138                 }
5139         }
5140
5141         commit_reversible_command ();
5142 }
5143
5144 struct EditorOrderRouteSorter {
5145     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
5146             /* use of ">" forces the correct sort order */
5147             return a->order_key ("editor") < b->order_key ("editor");
5148     }
5149 };
5150
5151 void
5152 Editor::select_next_route()
5153 {
5154         if (selection->tracks.empty()) {
5155                 selection->set (track_views.front());
5156                 return;
5157         }
5158
5159         TimeAxisView* current = selection->tracks.front();
5160
5161         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
5162                 if (*i == current) {
5163                         ++i;
5164                         if (i != track_views.end()) {
5165                                 selection->set (*i);
5166                         } else {
5167                                 selection->set (*(track_views.begin()));
5168                         }
5169                         break;
5170                 }
5171         }
5172 }
5173
5174 void
5175 Editor::select_prev_route()
5176 {
5177         if (selection->tracks.empty()) {
5178                 selection->set (track_views.front());
5179                 return;
5180         }
5181
5182         TimeAxisView* current = selection->tracks.front();
5183
5184         for (TrackViewList::reverse_iterator i = track_views.rbegin(); i != track_views.rend(); ++i) {
5185                 if (*i == current) {
5186                         ++i;
5187                         if (i != track_views.rend()) {
5188                                 selection->set (*i);
5189                         } else {
5190                                 selection->set (*(track_views.rbegin()));
5191                         }
5192                         break;
5193                 }
5194         }
5195 }
5196
5197 void
5198 Editor::set_loop_from_selection (bool play)
5199 {
5200         if (session == 0 || selection->time.empty()) {
5201                 return;
5202         }
5203
5204         nframes64_t start = selection->time[clicked_selection].start;
5205         nframes64_t end = selection->time[clicked_selection].end;
5206
5207         set_loop_range (start, end,  _("set loop range from selection"));
5208
5209         if (play) {
5210                 session->request_play_loop (true);
5211                 session->request_locate (start, true);
5212         }
5213 }
5214
5215 void
5216 Editor::set_loop_from_edit_range (bool play)
5217 {
5218         if (session == 0) {
5219                 return;
5220         }
5221
5222         nframes64_t start;
5223         nframes64_t end;
5224
5225         if (!get_edit_op_range (start, end)) {
5226                 return;
5227         }
5228
5229         set_loop_range (start, end,  _("set loop range from edit range"));
5230
5231         if (play) {
5232                 session->request_play_loop (true);
5233                 session->request_locate (start, true);
5234         }
5235 }
5236
5237 void
5238 Editor::set_loop_from_region (bool play)
5239 {
5240         nframes64_t start = max_frames;
5241         nframes64_t end = 0;
5242
5243         RegionSelection rs;
5244
5245         get_regions_for_action (rs);
5246
5247         if (rs.empty()) {
5248                 return;
5249         }
5250
5251         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5252                 if ((*i)->region()->position() < start) {
5253                         start = (*i)->region()->position();
5254                 }
5255                 if ((*i)->region()->last_frame() + 1 > end) {
5256                         end = (*i)->region()->last_frame() + 1;
5257                 }
5258         }
5259
5260         set_loop_range (start, end, _("set loop range from region"));
5261
5262         if (play) {
5263                 session->request_play_loop (true);
5264                 session->request_locate (start, true);
5265         }
5266 }
5267
5268 void
5269 Editor::set_punch_from_selection ()
5270 {
5271         if (session == 0 || selection->time.empty()) {
5272                 return;
5273         }
5274
5275         nframes64_t start = selection->time[clicked_selection].start;
5276         nframes64_t end = selection->time[clicked_selection].end;
5277
5278         set_punch_range (start, end,  _("set punch range from selection"));
5279 }
5280
5281 void
5282 Editor::set_punch_from_edit_range ()
5283 {
5284         if (session == 0) {
5285                 return;
5286         }
5287
5288         nframes64_t start;
5289         nframes64_t end;
5290
5291         if (!get_edit_op_range (start, end)) {
5292                 return;
5293         }
5294
5295         set_punch_range (start, end,  _("set punch range from edit range"));
5296 }
5297
5298 void
5299 Editor::set_punch_from_region ()
5300 {
5301         nframes64_t start = max_frames;
5302         nframes64_t end = 0;
5303
5304         RegionSelection rs;
5305
5306         get_regions_for_action (rs);
5307
5308         if (rs.empty()) {
5309                 return;
5310         }
5311
5312         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5313                 if ((*i)->region()->position() < start) {
5314                         start = (*i)->region()->position();
5315                 }
5316                 if ((*i)->region()->last_frame() + 1 > end) {
5317                         end = (*i)->region()->last_frame() + 1;
5318                 }
5319         }
5320
5321         set_punch_range (start, end, _("set punch range from region"));
5322 }
5323
5324 void
5325 Editor::pitch_shift_regions ()
5326 {
5327         RegionSelection rs;
5328
5329         get_regions_for_action (rs);
5330
5331         if (rs.empty()) {
5332                 return;
5333         }
5334
5335         pitch_shift (rs, 1.2);
5336 }
5337
5338 void
5339 Editor::use_region_as_bar ()
5340 {
5341         if (!session) {
5342                 return;
5343         }
5344
5345         RegionSelection rs;
5346
5347         get_regions_for_action (rs);
5348
5349         if (rs.empty()) {
5350                 return;
5351         }
5352
5353         RegionView* rv = rs.front();
5354
5355         define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
5356 }
5357
5358 void
5359 Editor::use_range_as_bar ()
5360 {
5361         nframes64_t start, end;
5362         if (get_edit_op_range (start, end)) {
5363                 define_one_bar (start, end);
5364         }
5365 }
5366
5367 void
5368 Editor::define_one_bar (nframes64_t start, nframes64_t end)
5369 {
5370         nframes64_t length = end - start;
5371
5372         const Meter& m (session->tempo_map().meter_at (start));
5373
5374         /* length = 1 bar */
5375
5376         /* now we want frames per beat.
5377            we have frames per bar, and beats per bar, so ...
5378         */
5379
5380         double frames_per_beat = length / m.beats_per_bar();
5381
5382         /* beats per minute = */
5383
5384         double beats_per_minute = (session->frame_rate() * 60.0) / frames_per_beat;
5385
5386         /* now decide whether to:
5387
5388             (a) set global tempo
5389             (b) add a new tempo marker
5390
5391         */
5392
5393         const TempoSection& t (session->tempo_map().tempo_section_at (start));
5394
5395         bool do_global = false;
5396
5397         if ((session->tempo_map().n_tempos() == 1) && (session->tempo_map().n_meters() == 1)) {
5398
5399                 /* only 1 tempo & 1 meter: ask if the user wants to set the tempo
5400                    at the start, or create a new marker
5401                 */
5402
5403                 vector<string> options;
5404                 options.push_back (_("Cancel"));
5405                 options.push_back (_("Add new marker"));
5406                 options.push_back (_("Set global tempo"));
5407                 Choice c (_("Do you want to set the global tempo or add new tempo marker?"),
5408                           options);
5409                 c.set_default_response (2);
5410
5411                 switch (c.run()) {
5412                 case 0:
5413                         return;
5414
5415                 case 2:
5416                         do_global = true;
5417                         break;
5418
5419                 default:
5420                         do_global = false;
5421                 }
5422
5423         } else {
5424
5425                 /* more than 1 tempo and/or meter section already, go ahead do the "usual":
5426                    if the marker is at the region starter, change it, otherwise add
5427                    a new tempo marker
5428                 */
5429         }
5430
5431         begin_reversible_command (_("set tempo from region"));
5432         XMLNode& before (session->tempo_map().get_state());
5433
5434         if (do_global) {
5435                 session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type());
5436         } else if (t.frame() == start) {
5437                 session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type());
5438         } else {
5439                 session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), start);
5440         }
5441
5442         XMLNode& after (session->tempo_map().get_state());
5443
5444         session->add_command (new MementoCommand<TempoMap>(session->tempo_map(), &before, &after));
5445         commit_reversible_command ();
5446 }
5447
5448 void
5449 Editor::split_region_at_transients ()
5450 {
5451         AnalysisFeatureList positions;
5452
5453         if (!session) {
5454                 return;
5455         }
5456
5457         RegionSelection rs;
5458
5459         get_regions_for_action (rs);
5460
5461         if (rs.empty()) {
5462                 return;
5463         }
5464
5465         session->begin_reversible_command (_("split regions"));
5466
5467         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
5468
5469                 RegionSelection::iterator tmp;
5470
5471                 tmp = i;
5472                 ++tmp;
5473
5474                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i)->region());
5475
5476                 if (ar && (ar->get_transients (positions) == 0)) {
5477                         split_region_at_points ((*i)->region(), positions, true);
5478                         positions.clear ();
5479                 }
5480
5481                 i = tmp;
5482         }
5483
5484         session->commit_reversible_command ();
5485
5486 }
5487
5488 void
5489 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret)
5490 {
5491         bool use_rhythmic_rodent = false;
5492
5493         boost::shared_ptr<Playlist> pl = r->playlist();
5494
5495         if (!pl) {
5496                 return;
5497         }
5498
5499         if (positions.empty()) {
5500                 return;
5501         }
5502
5503
5504         if (positions.size() > 20) {
5505                 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);
5506                 MessageDialog msg (msgstr,
5507                                    false,
5508                                    Gtk::MESSAGE_INFO,
5509                                    Gtk::BUTTONS_OK_CANCEL);
5510
5511                 if (can_ferret) {
5512                         msg.add_button (_("Call for the Ferret!"), RESPONSE_APPLY);
5513                         msg.set_secondary_text (_("Press OK to continue with this split operation\nor ask the Ferret dialog to tune the analysis"));
5514                 } else {
5515                         msg.set_secondary_text (_("Press OK to continue with this split operation"));
5516                 }
5517
5518                 msg.set_title (_("Excessive split?"));
5519                 msg.present ();
5520
5521                 int response = msg.run();
5522                 msg.hide ();
5523                 switch (response) {
5524                 case RESPONSE_OK:
5525                         break;
5526                 case RESPONSE_APPLY:
5527                         use_rhythmic_rodent = true;
5528                         break;
5529                 default:
5530                         return;
5531                 }
5532         }
5533
5534         if (use_rhythmic_rodent) {
5535                 show_rhythm_ferret ();
5536                 return;
5537         }
5538
5539         AnalysisFeatureList::const_iterator x;
5540
5541         nframes64_t pos = r->position();
5542
5543         XMLNode& before (pl->get_state());
5544
5545         x = positions.begin();
5546
5547         while (x != positions.end()) {
5548                 if ((*x) > pos) {
5549                         break;
5550                 }
5551                 ++x;
5552         }
5553
5554         if (x == positions.end()) {
5555                 return;
5556         }
5557
5558         pl->freeze ();
5559         pl->remove_region (r);
5560
5561         while (x != positions.end()) {
5562
5563                 /* file start = original start + how far we from the initial position ?
5564                  */
5565
5566                 nframes64_t file_start = r->start() + (pos - r->position());
5567
5568                 /* length = next position - current position
5569                  */
5570
5571                 nframes64_t len = (*x) - pos;
5572
5573                 /* XXX we do we really want to allow even single-sample regions?
5574                    shouldn't we have some kind of lower limit on region size?
5575                 */
5576
5577                 if (len <= 0) {
5578                         break;
5579                 }
5580
5581                 string new_name;
5582
5583                 if (session->region_name (new_name, r->name())) {
5584                         break;
5585                 }
5586
5587                 /* do NOT announce new regions 1 by one, just wait till they are all done */
5588
5589                 boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags, false);
5590                 pl->add_region (nr, pos);
5591
5592                 pos += len;
5593                 ++x;
5594
5595                 if (*x > r->last_frame()) {
5596
5597                         /* add final fragment */
5598
5599                         file_start = r->start() + (pos - r->position());
5600                         len = r->last_frame() - pos;
5601
5602                         nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags);
5603                         pl->add_region (nr, pos);
5604
5605                         break;
5606                 }
5607         }
5608
5609         pl->thaw ();
5610
5611         XMLNode& after (pl->get_state());
5612
5613         session->add_command (new MementoCommand<Playlist>(*pl, &before, &after));
5614 }
5615
5616 void
5617 Editor::tab_to_transient (bool forward)
5618 {
5619         AnalysisFeatureList positions;
5620
5621         if (!session) {
5622                 return;
5623         }
5624
5625         nframes64_t pos = session->audible_frame ();
5626
5627         if (!selection->tracks.empty()) {
5628
5629                 for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
5630
5631                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
5632
5633                         if (rtv) {
5634                                 boost::shared_ptr<Diskstream> ds = rtv->get_diskstream();
5635                                 if (ds) {
5636                                         boost::shared_ptr<Playlist> pl = rtv->get_diskstream()->playlist ();
5637                                         if (pl) {
5638                                                 nframes64_t result = pl->find_next_transient (pos, forward ? 1 : -1);
5639
5640                                                 if (result >= 0) {
5641                                                         positions.push_back (result);
5642                                                 }
5643                                         }
5644                                 }
5645                         }
5646                 }
5647
5648         } else {
5649
5650                 RegionSelection rs;
5651
5652                 get_regions_for_action (rs);
5653
5654                 if (rs.empty()) {
5655                         return;
5656                 }
5657
5658                 for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5659                         (*r)->region()->get_transients (positions);
5660                 }
5661         }
5662
5663         TransientDetector::cleanup_transients (positions, session->frame_rate(), 3.0);
5664
5665         if (forward) {
5666                 AnalysisFeatureList::iterator x;
5667
5668                 for (x = positions.begin(); x != positions.end(); ++x) {
5669                         if ((*x) > pos) {
5670                                 break;
5671                         }
5672                 }
5673
5674                 if (x != positions.end ()) {
5675                         session->request_locate (*x);
5676                 }
5677
5678         } else {
5679                 AnalysisFeatureList::reverse_iterator x;
5680
5681                 for (x = positions.rbegin(); x != positions.rend(); ++x) {
5682                         if ((*x) < pos) {
5683                                 break;
5684                         }
5685                 }
5686
5687                 if (x != positions.rend ()) {
5688                         session->request_locate (*x);
5689                 }
5690         }
5691 }
5692 void
5693 Editor::playhead_forward_to_grid ()
5694 {
5695         if (!session) return;
5696         nframes64_t pos = playhead_cursor->current_frame;
5697         if (pos < max_frames - 1) {
5698                 pos += 2;
5699                 snap_to_internal (pos, 1, false);
5700                 session->request_locate (pos);
5701         }
5702 }
5703
5704
5705 void
5706 Editor::playhead_backward_to_grid ()
5707 {
5708         if (!session) return;
5709         nframes64_t pos = playhead_cursor->current_frame;
5710         if (pos > 2) {
5711                 pos -= 2;
5712                 snap_to_internal (pos, -1, false);
5713                 session->request_locate (pos);
5714         }
5715 }
5716
5717 void
5718 Editor::set_track_height (uint32_t h)
5719 {
5720         TrackSelection& ts (selection->tracks);
5721
5722         if (ts.empty()) {
5723                 return;
5724         }
5725
5726         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5727                 (*x)->set_height (h);
5728         }
5729 }
5730
5731 void
5732 Editor::set_track_height_largest ()
5733 {
5734         set_track_height (TimeAxisView::hLargest);
5735 }
5736 void
5737 Editor::set_track_height_large ()
5738 {
5739         set_track_height (TimeAxisView::hLarge);
5740 }
5741 void
5742 Editor::set_track_height_larger ()
5743 {
5744         set_track_height (TimeAxisView::hLarger);
5745 }
5746 void
5747 Editor::set_track_height_normal ()
5748 {
5749         set_track_height (TimeAxisView::hNormal);
5750 }
5751 void
5752 Editor::set_track_height_smaller ()
5753 {
5754         set_track_height (TimeAxisView::hSmaller);
5755 }
5756 void
5757 Editor::set_track_height_small ()
5758 {
5759         set_track_height (TimeAxisView::hSmall);
5760 }
5761
5762 void
5763 Editor::toggle_tracks_active ()
5764 {
5765         TrackSelection& ts (selection->tracks);
5766         bool first = true;
5767         bool target = false;
5768
5769         if (ts.empty()) {
5770                 return;
5771         }
5772
5773         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5774                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*x);
5775
5776                 if (rtv) {
5777                         if (first) {
5778                                 target = !rtv->_route->active();
5779                                 first = false;
5780                         }
5781                         rtv->_route->set_active (target);
5782                 }
5783         }
5784 }
5785
5786 void
5787 Editor::remove_tracks ()
5788 {
5789         TrackSelection& ts (selection->tracks);
5790
5791         if (ts.empty()) {
5792                 return;
5793         }
5794
5795         vector<string> choices;
5796         string prompt;
5797         int ntracks = 0;
5798         int nbusses = 0;
5799         const char* trackstr;
5800         const char* busstr;
5801         vector<boost::shared_ptr<Route> > routes;
5802
5803         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5804                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*x);
5805                 if (rtv) {
5806                         if (rtv->is_track()) {
5807                                 ntracks++;
5808                         } else {
5809                                 nbusses++;
5810                         }
5811                 }
5812                 routes.push_back (rtv->_route);
5813         }
5814
5815         if (ntracks + nbusses == 0) {
5816                 return;
5817         }
5818
5819         if (ntracks > 1) {
5820                 trackstr = _("tracks");
5821         } else {
5822                 trackstr = _("track");
5823         }
5824
5825         if (nbusses > 1) {
5826                 busstr = _("busses");
5827         } else {
5828                 busstr = _("bus");
5829         }
5830
5831         if (ntracks) {
5832                 if (nbusses) {
5833                         prompt  = string_compose (_("Do you really want to remove %1 %2 and %3 %4?\n"
5834                                                     "(You may also lose the playlists associated with the %2)\n\n"
5835                                                     "This action cannot be undone!"),
5836                                                   ntracks, trackstr, nbusses, busstr);
5837                 } else {
5838                         prompt  = string_compose (_("Do you really want to remove %1 %2?\n"
5839                                                     "(You may also lose the playlists associated with the %2)\n\n"
5840                                                     "This action cannot be undone!"),
5841                                                   ntracks, trackstr);
5842                 }
5843         } else if (nbusses) {
5844                 prompt  = string_compose (_("Do you really want to remove %1 %2?"),
5845                                           nbusses, busstr);
5846         }
5847
5848         choices.push_back (_("No, do nothing."));
5849         if (ntracks + nbusses > 1) {
5850                 choices.push_back (_("Yes, remove them."));
5851         } else {
5852                 choices.push_back (_("Yes, remove it."));
5853         }
5854
5855         Choice prompter (prompt, choices);
5856
5857         if (prompter.run () != 1) {
5858                 return;
5859         }
5860
5861         for (vector<boost::shared_ptr<Route> >::iterator x = routes.begin(); x != routes.end(); ++x) {
5862                 session->remove_route (*x);
5863         }
5864 }
5865
5866 void
5867 Editor::set_waveform_scale (WaveformScale ws)
5868 {
5869         TrackSelection& ts (selection->tracks);
5870
5871         if (ts.empty()) {
5872                 return;
5873         }
5874
5875         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
5876                 AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (*x);
5877                 if (atv) {
5878                         atv->set_waveform_scale (ws);
5879                 }
5880         }
5881 }
5882
5883 void
5884 Editor::do_insert_time ()
5885 {
5886         if (selection->tracks.empty()) {
5887                 return;
5888         }
5889
5890         nframes64_t pos = get_preferred_edit_position ();
5891         ArdourDialog d (*this, _("Insert Time"));
5892         VButtonBox button_box;
5893         VBox option_box;
5894         RadioButtonGroup group;
5895         RadioButton leave_button (group, _("Stay in position"));
5896         RadioButton move_button (group, _("Move"));
5897         RadioButton split_button (group, _("Split & Later Section Moves"));
5898         Label intersect_option_label (_("Intersected regions should:"));
5899         CheckButton glue_button (_("Move Glued Regions"));
5900         CheckButton marker_button (_("Move Markers"));
5901         AudioClock clock ("insertTimeClock", true, X_("InsertTimeClock"), true, true, true);
5902         HBox clock_box;
5903
5904         clock.set (0);
5905         clock.set_session (session);
5906         clock.set_bbt_reference (pos);
5907
5908         clock_box.pack_start (clock, false, true);
5909
5910         option_box.set_spacing (6);
5911         option_box.pack_start (intersect_option_label, false, false);
5912         option_box.pack_start (button_box, false, false);
5913         option_box.pack_start (glue_button, false, false);
5914         option_box.pack_start (marker_button, false, false);
5915
5916         button_box.pack_start (leave_button, false, false);
5917         button_box.pack_start (move_button, false, false);
5918         button_box.pack_start (split_button, false, false);
5919
5920         d.get_vbox()->set_border_width (12);
5921         d.get_vbox()->pack_start (clock_box, false, false);
5922         d.get_vbox()->pack_start (option_box, false, false);
5923
5924         leave_button.show ();
5925         move_button.show ();
5926         split_button.show ();
5927         intersect_option_label.show ();
5928         option_box.show ();
5929         button_box.show ();
5930         glue_button.show ();
5931         clock.show_all();
5932         clock_box.show ();
5933         marker_button.show ();
5934
5935         d.add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
5936         d.add_button (Gtk::Stock::OK, Gtk::RESPONSE_OK);
5937         d.show ();
5938
5939         int response = d.run ();
5940
5941         if (response != RESPONSE_OK) {
5942                 return;
5943         }
5944
5945         nframes64_t distance = clock.current_duration (pos);
5946
5947         if (distance == 0) {
5948                 return;
5949         }
5950
5951         InsertTimeOption opt;
5952
5953         if (leave_button.get_active()) {
5954                 opt = LeaveIntersected;
5955         } else if (move_button.get_active()) {
5956                 opt = MoveIntersected;
5957         } else {
5958                 opt = SplitIntersected;
5959         }
5960
5961         insert_time (pos, distance, opt, glue_button.get_active(), marker_button.get_active());
5962 }
5963
5964 void
5965 Editor::insert_time (nframes64_t pos, nframes64_t frames, InsertTimeOption opt,
5966                      bool ignore_music_glue, bool markers_too)
5967 {
5968         bool commit = false;
5969
5970         if (Config->get_edit_mode() == Lock) {
5971                 return;
5972         }
5973
5974         begin_reversible_command (_("insert time"));
5975
5976         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
5977                 boost::shared_ptr<Playlist> pl = (*x)->playlist();
5978
5979                 if (!pl) {
5980                         continue;
5981                 }
5982
5983                 XMLNode &before = pl->get_state();
5984
5985                 if (opt == SplitIntersected) {
5986                         pl->split (pos);
5987                 }
5988
5989                 pl->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
5990
5991                 XMLNode &after = pl->get_state();
5992
5993                 session->add_command (new MementoCommand<Playlist> (*pl, &before, &after));
5994                 commit = true;
5995         }
5996
5997         if (markers_too) {
5998                 bool moved = false;
5999                 XMLNode& before (session->locations()->get_state());
6000                 Locations::LocationList copy (session->locations()->list());
6001
6002                 for (Locations::LocationList::iterator i = copy.begin(); i != copy.end(); ++i) {
6003
6004                         Locations::LocationList::const_iterator tmp;
6005
6006                         if ((*i)->start() >= pos) {
6007                                 (*i)->set_start ((*i)->start() + frames);
6008                                 if (!(*i)->is_mark()) {
6009                                         (*i)->set_end ((*i)->end() + frames);
6010                                 }
6011                                 moved = true;
6012                         }
6013                 }
6014
6015                 if (moved) {
6016                         XMLNode& after (session->locations()->get_state());
6017                         session->add_command (new MementoCommand<Locations>(*session->locations(), &before, &after));
6018                 }
6019         }
6020
6021         if (commit) {
6022                 commit_reversible_command ();
6023         }
6024 }
6025
6026 void
6027 Editor::fit_tracks ()
6028 {
6029         if (selection->tracks.empty()) {
6030                 return;
6031         }
6032
6033         uint32_t child_heights = 0;
6034
6035         for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
6036
6037                 if (!(*t)->marked_for_display()) {
6038                         continue;
6039                 }
6040
6041                 child_heights += ((*t)->effective_height - (*t)->current_height());
6042         }
6043
6044         uint32_t h = (uint32_t) floor ((canvas_height - child_heights)/selection->tracks.size());
6045         double first_y_pos = DBL_MAX;
6046
6047         undo_visual_stack.push_back (current_visual_state());
6048
6049         for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
6050                 (*t)->set_height (h);
6051                 first_y_pos = std::min ((*t)->y_position, first_y_pos);
6052         }
6053
6054         vertical_adjustment.set_value (first_y_pos);
6055
6056         redo_visual_stack.push_back (current_visual_state());
6057 }
6058
6059 void
6060 Editor::save_visual_state (uint32_t n)
6061 {
6062         while (visual_states.size() <= n) {
6063                 visual_states.push_back (0);
6064         }
6065
6066         if (visual_states[n] != 0) {
6067                 delete visual_states[n];
6068         }
6069
6070         visual_states[n] = current_visual_state (true);
6071         gdk_beep ();
6072 }
6073
6074 void
6075 Editor::goto_visual_state (uint32_t n)
6076 {
6077         if (visual_states.size() <= n) {
6078                 return;
6079         }
6080
6081         if (visual_states[n] == 0) {
6082                 return;
6083         }
6084
6085         use_visual_state (*visual_states[n]);
6086 }
6087
6088 void
6089 Editor::start_visual_state_op (uint32_t n)
6090 {
6091         cerr << "Start\n";
6092         if (visual_state_op_connection.empty()) {
6093                 cerr << "\tqueue\n";
6094                 visual_state_op_connection = Glib::signal_timeout().connect (bind (mem_fun (*this, &Editor::end_visual_state_op), n), 1000);
6095         }
6096 }
6097
6098 void
6099 Editor::cancel_visual_state_op (uint32_t n)
6100 {
6101         cerr << "Cancel\n";
6102         if (!visual_state_op_connection.empty()) {
6103                 cerr << "\tgoto\n";
6104                 visual_state_op_connection.disconnect();
6105                 goto_visual_state (n);
6106         }
6107 }
6108
6109 bool
6110 Editor::end_visual_state_op (uint32_t n)
6111 {
6112         visual_state_op_connection.disconnect();
6113         save_visual_state (n);
6114
6115         PopUp* pup = new PopUp (WIN_POS_MOUSE, 1000, true);
6116         char buf[32];
6117         snprintf (buf, sizeof (buf), _("Saved view %u"), n+1);
6118         pup->set_text (buf);
6119         pup->touch();
6120
6121         return false; // do not call again
6122 }