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 <limits>
  28 #include <map>
  29 #include <set>
  30
  31 #include "pbd/error.h"
  32 #include "pbd/basename.h"
  33 #include "pbd/pthread_utils.h"
  34 #include "pbd/memento_command.h"
  35 #include "pbd/unwind.h"
  36 #include "pbd/whitespace.h"
  37 #include "pbd/stateful_diff_command.h"
  38
  39 #include <gtkmm2ext/utils.h>
  40 #include <gtkmm2ext/choice.h>
  41 #include <gtkmm2ext/popup.h>
  42
  43 #include "ardour/audio_track.h"
  44 #include "ardour/audioregion.h"
  45 #include "ardour/boost_debug.h"
  46 #include "ardour/dB.h"
  47 #include "ardour/location.h"
  48 #include "ardour/midi_region.h"
  49 #include "ardour/midi_track.h"
  50 #include "ardour/operations.h"
  51 #include "ardour/playlist_factory.h"
  52 #include "ardour/profile.h"
  53 #include "ardour/quantize.h"
  54 #include "ardour/legatize.h"
  55 #include "ardour/region_factory.h"
  56 #include "ardour/reverse.h"
  57 #include "ardour/session.h"
  58 #include "ardour/session_playlists.h"
  59 #include "ardour/strip_silence.h"
  60 #include "ardour/transient_detector.h"
  61 #include "ardour/transpose.h"
  62
  63 #include "canvas/canvas.h"
  64
  65 #include "actions.h"
  66 #include "audio_region_view.h"
  67 #include "audio_streamview.h"
  68 #include "audio_time_axis.h"
  69 #include "automation_region_view.h"
  70 #include "automation_time_axis.h"
  71 #include "control_point.h"
  72 #include "debug.h"
  73 #include "editing.h"
  74 #include "editor.h"
  75 #include "editor_cursors.h"
  76 #include "editor_drag.h"
  77 #include "editor_regions.h"
  78 #include "editor_routes.h"
  79 #include "gui_thread.h"
  80 #include "insert_remove_time_dialog.h"
  81 #include "interthread_progress_window.h"
  82 #include "item_counts.h"
  83 #include "keyboard.h"
  84 #include "midi_region_view.h"
  85 #include "mixer_ui.h"
  86 #include "mixer_strip.h"
  87 #include "mouse_cursors.h"
  88 #include "normalize_dialog.h"
  89 #include "note.h"
  90 #include "paste_context.h"
  91 #include "patch_change_dialog.h"
  92 #include "quantize_dialog.h"
  93 #include "region_gain_line.h"
  94 #include "rgb_macros.h"
  95 #include "route_time_axis.h"
  96 #include "selection.h"
  97 #include "selection_templates.h"
  98 #include "streamview.h"
  99 #include "strip_silence_dialog.h"
 100 #include "time_axis_view.h"
 101 #include "timers.h"
 102 #include "transpose_dialog.h"
 103 #include "transform_dialog.h"
 104 #include "ui_config.h"
 105
 106 #include "pbd/i18n.h"
 107
 108 using namespace std;
 109 using namespace ARDOUR;
 110 using namespace PBD;
 111 using namespace Gtk;
 112 using namespace Gtkmm2ext;
 113 using namespace Editing;
 114 using Gtkmm2ext::Keyboard;
 115
 116 /***********************************************************************
 117   Editor operations
 118  ***********************************************************************/
 119
 120 void
 121 Editor::undo (uint32_t n)
 122 {
 123         if (_session && _session->actively_recording()) {
 124                 /* no undo allowed while recording. Session will check also,
 125                    but we don't even want to get to that.
 126                 */
 127                 return;
 128         }
 129
 130         if (_drags->active ()) {
 131                 _drags->abort ();
 132         }
 133
 134         if (_session) {
 135                 _session->undo (n);
 136                 if (_session->undo_depth() == 0) {
 137                         undo_action->set_sensitive(false);
 138                 }
 139                 redo_action->set_sensitive(true);
 140                 begin_selection_op_history ();
 141         }
 142 }
 143
 144 void
 145 Editor::redo (uint32_t n)
 146 {
 147         if (_session && _session->actively_recording()) {
 148                 /* no redo allowed while recording. Session will check also,
 149                    but we don't even want to get to that.
 150                 */
 151                 return;
 152         }
 153
 154         if (_drags->active ()) {
 155                 _drags->abort ();
 156         }
 157
 158         if (_session) {
 159         _session->redo (n);
 160                 if (_session->redo_depth() == 0) {
 161                         redo_action->set_sensitive(false);
 162                 }
 163                 undo_action->set_sensitive(true);
 164                 begin_selection_op_history ();
 165         }
 166 }
 167
 168 void
 169 Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_frame)
 170 {
 171         bool frozen = false;
 172
 173         RegionSelection pre_selected_regions = selection->regions;
 174         bool working_on_selection = !pre_selected_regions.empty();
 175
 176         list<boost::shared_ptr<Playlist> > used_playlists;
 177         list<RouteTimeAxisView*> used_trackviews;
 178
 179         if (regions.empty()) {
 180                 return;
 181         }
 182
 183         begin_reversible_command (_("split"));
 184
 185         // if splitting a single region, and snap-to is using
 186         // region boundaries, don't pay attention to them
 187
 188         if (regions.size() == 1) {
 189                 switch (_snap_type) {
 190                 case SnapToRegionStart:
 191                 case SnapToRegionSync:
 192                 case SnapToRegionEnd:
 193                         break;
 194                 default:
 195                         if (snap_frame) {
 196                                 snap_to (where);
 197                         }
 198                 }
 199         } else {
 200                 if (snap_frame) {
 201                         snap_to (where);
 202                 }
 203
 204                 frozen = true;
 205                 EditorFreeze(); /* Emit Signal */
 206         }
 207
 208         for (RegionSelection::iterator a = regions.begin(); a != regions.end(); ) {
 209
 210                 RegionSelection::iterator tmp;
 211
 212                 /* XXX this test needs to be more complicated, to make sure we really
 213                    have something to split.
 214                 */
 215
 216                 if (!(*a)->region()->covers (where.frame)) {
 217                         ++a;
 218                         continue;
 219                 }
 220
 221                 tmp = a;
 222                 ++tmp;
 223
 224                 boost::shared_ptr<Playlist> pl = (*a)->region()->playlist();
 225
 226                 if (!pl) {
 227                         a = tmp;
 228                         continue;
 229                 }
 230
 231                 if (!pl->frozen()) {
 232                         /* we haven't seen this playlist before */
 233
 234                         /* remember used playlists so we can thaw them later */
 235                         used_playlists.push_back(pl);
 236
 237                         TimeAxisView& tv = (*a)->get_time_axis_view();
 238                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
 239                         if (rtv) {
 240                                 used_trackviews.push_back (rtv);
 241                         }
 242                         pl->freeze();
 243                 }
 244
 245
 246                 if (pl) {
 247                         pl->clear_changes ();
 248                         pl->split_region ((*a)->region(), where);
 249                         _session->add_command (new StatefulDiffCommand (pl));
 250                 }
 251
 252                 a = tmp;
 253         }
 254
 255         latest_regionviews.clear ();
 256
 257         vector<sigc::connection> region_added_connections;
 258
 259         for (list<RouteTimeAxisView*>::iterator i = used_trackviews.begin(); i != used_trackviews.end(); ++i) {
 260                 region_added_connections.push_back ((*i)->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view)));
 261         }
 262
 263         while (used_playlists.size() > 0) {
 264                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
 265                 (*i)->thaw();
 266                 used_playlists.pop_front();
 267         }
 268
 269         for (vector<sigc::connection>::iterator c = region_added_connections.begin(); c != region_added_connections.end(); ++c) {
 270                 (*c).disconnect ();
 271         }
 272
 273         if (frozen){
 274                 EditorThaw(); /* Emit Signal */
 275         }
 276
 277         if (working_on_selection) {
 278                 // IFF we were working on selected regions, try to reinstate the other region selections that existed before the freeze/thaw.
 279
 280                 RegionSelectionAfterSplit rsas = Config->get_region_selection_after_split();
 281                 /* There are three classes of regions that we might want selected after
 282                    splitting selected regions:
 283                     - regions selected before the split operation, and unaffected by it
 284                     - newly-created regions before the split
 285                     - newly-created regions after the split
 286                  */
 287
 288                 if (rsas & Existing) {
 289                         // region selections that existed before the split.
 290                         selection->add ( pre_selected_regions );
 291                 }
 292
 293                 for (RegionSelection::iterator ri = latest_regionviews.begin(); ri != latest_regionviews.end(); ri++) {
 294                         if ((*ri)->region()->position() < where.frame) {
 295                                 // new regions created before the split
 296                                 if (rsas & NewlyCreatedLeft) {
 297                                         selection->add (*ri);
 298                                 }
 299                         } else {
 300                                 // new regions created after the split
 301                                 if (rsas & NewlyCreatedRight) {
 302                                         selection->add (*ri);
 303                                 }
 304                         }
 305                 }
 306         } else {
 307                 if( working_on_selection ) {
 308                         selection->add (latest_regionviews);  //these are the new regions created after the split
 309                 }
 310         }
 311
 312         commit_reversible_command ();
 313 }
 314
 315 /** Move one extreme of the current range selection.  If more than one range is selected,
 316  *  the start of the earliest range or the end of the latest range is moved.
 317  *
 318  *  @param move_end true to move the end of the current range selection, false to move
 319  *  the start.
 320  *  @param next true to move the extreme to the next region boundary, false to move to
 321  *  the previous.
 322  */
 323 void
 324 Editor::move_range_selection_start_or_end_to_region_boundary (bool move_end, bool next)
 325 {
 326         if (selection->time.start() == selection->time.end_frame()) {
 327                 return;
 328         }
 329
 330         framepos_t start = selection->time.start ();
 331         framepos_t end = selection->time.end_frame ();
 332
 333         /* the position of the thing we may move */
 334         framepos_t pos = move_end ? end : start;
 335         int dir = next ? 1 : -1;
 336
 337         /* so we don't find the current region again */
 338         if (dir > 0 || pos > 0) {
 339                 pos += dir;
 340         }
 341
 342         framepos_t const target = get_region_boundary (pos, dir, true, false);
 343         if (target < 0) {
 344                 return;
 345         }
 346
 347         if (move_end) {
 348                 end = target;
 349         } else {
 350                 start = target;
 351         }
 352
 353         if (end < start) {
 354                 return;
 355         }
 356
 357         begin_reversible_selection_op (_("alter selection"));
 358         selection->set_preserving_all_ranges (start, end);
 359         commit_reversible_selection_op ();
 360 }
 361
 362 bool
 363 Editor::nudge_forward_release (GdkEventButton* ev)
 364 {
 365         if (ev->state & Keyboard::PrimaryModifier) {
 366                 nudge_forward (false, true);
 367         } else {
 368                 nudge_forward (false, false);
 369         }
 370         return false;
 371 }
 372
 373 bool
 374 Editor::nudge_backward_release (GdkEventButton* ev)
 375 {
 376         if (ev->state & Keyboard::PrimaryModifier) {
 377                 nudge_backward (false, true);
 378         } else {
 379                 nudge_backward (false, false);
 380         }
 381         return false;
 382 }
 383
 384
 385 void
 386 Editor::nudge_forward (bool next, bool force_playhead)
 387 {
 388         framepos_t distance;
 389         framepos_t next_distance;
 390
 391         if (!_session) {
 392                 return;
 393         }
 394
 395         RegionSelection rs = get_regions_from_selection_and_entered ();
 396
 397         if (!force_playhead && !rs.empty()) {
 398
 399                 begin_reversible_command (_("nudge regions forward"));
 400
 401                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 402                         boost::shared_ptr<Region> r ((*i)->region());
 403
 404                         distance = get_nudge_distance (r->position(), next_distance);
 405
 406                         if (next) {
 407                                 distance = next_distance;
 408                         }
 409
 410                         r->clear_changes ();
 411                         r->set_position (r->position() + distance);
 412                         _session->add_command (new StatefulDiffCommand (r));
 413                 }
 414
 415                 commit_reversible_command ();
 416
 417
 418         } else if (!force_playhead && !selection->markers.empty()) {
 419
 420                 bool is_start;
 421                 bool in_command = false;
 422                 const int32_t divisions = get_grid_music_divisions (0);
 423
 424                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 425
 426                         Location* loc = find_location_from_marker ((*i), is_start);
 427
 428                         if (loc) {
 429
 430                                 XMLNode& before (loc->get_state());
 431
 432                                 if (is_start) {
 433                                         distance = get_nudge_distance (loc->start(), next_distance);
 434                                         if (next) {
 435                                                 distance = next_distance;
 436                                         }
 437                                         if (max_framepos - distance > loc->start() + loc->length()) {
 438                                                 loc->set_start (loc->start() + distance, false, true, divisions);
 439                                         } else {
 440                                                 loc->set_start (max_framepos - loc->length(), false, true, divisions);
 441                                         }
 442                                 } else {
 443                                         distance = get_nudge_distance (loc->end(), next_distance);
 444                                         if (next) {
 445                                                 distance = next_distance;
 446                                         }
 447                                         if (max_framepos - distance > loc->end()) {
 448                                                 loc->set_end (loc->end() + distance, false, true, divisions);
 449                                         } else {
 450                                                 loc->set_end (max_framepos, false, true, divisions);
 451                                         }
 452                                         if (loc->is_session_range()) {
 453                                                 _session->set_end_is_free (false);
 454                                         }
 455                                 }
 456                                 if (!in_command) {
 457                                         begin_reversible_command (_("nudge location forward"));
 458                                         in_command = true;
 459                                 }
 460                                 XMLNode& after (loc->get_state());
 461                                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 462                         }
 463                 }
 464
 465                 if (in_command) {
 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         framepos_t distance;
 478         framepos_t next_distance;
 479
 480         if (!_session) {
 481                 return;
 482         }
 483
 484         RegionSelection rs = get_regions_from_selection_and_entered ();
 485
 486         if (!force_playhead && !rs.empty()) {
 487
 488                 begin_reversible_command (_("nudge regions backward"));
 489
 490                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 491                         boost::shared_ptr<Region> r ((*i)->region());
 492
 493                         distance = get_nudge_distance (r->position(), next_distance);
 494
 495                         if (next) {
 496                                 distance = next_distance;
 497                         }
 498
 499                         r->clear_changes ();
 500
 501                         if (r->position() > distance) {
 502                                 r->set_position (r->position() - distance);
 503                         } else {
 504                                 r->set_position (0);
 505                         }
 506                         _session->add_command (new StatefulDiffCommand (r));
 507                 }
 508
 509                 commit_reversible_command ();
 510
 511         } else if (!force_playhead && !selection->markers.empty()) {
 512
 513                 bool is_start;
 514                 bool in_command = false;
 515
 516                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
 517
 518                         Location* loc = find_location_from_marker ((*i), is_start);
 519
 520                         if (loc) {
 521
 522                                 XMLNode& before (loc->get_state());
 523
 524                                 if (is_start) {
 525                                         distance = get_nudge_distance (loc->start(), next_distance);
 526                                         if (next) {
 527                                                 distance = next_distance;
 528                                         }
 529                                         if (distance < loc->start()) {
 530                                                 loc->set_start (loc->start() - distance, false, true, get_grid_music_divisions(0));
 531                                         } else {
 532                                                 loc->set_start (0, false, true, get_grid_music_divisions(0));
 533                                         }
 534                                 } else {
 535                                         distance = get_nudge_distance (loc->end(), next_distance);
 536
 537                                         if (next) {
 538                                                 distance = next_distance;
 539                                         }
 540
 541                                         if (distance < loc->end() - loc->length()) {
 542                                                 loc->set_end (loc->end() - distance, false, true, get_grid_music_divisions(0));
 543                                         } else {
 544                                                 loc->set_end (loc->length(), false, true, get_grid_music_divisions(0));
 545                                         }
 546                                         if (loc->is_session_range()) {
 547                                                 _session->set_end_is_free (false);
 548                                         }
 549                                 }
 550                                 if (!in_command) {
 551                                         begin_reversible_command (_("nudge location forward"));
 552                                         in_command = true;
 553                                 }
 554                                 XMLNode& after (loc->get_state());
 555                                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 556                         }
 557                 }
 558                 if (in_command) {
 559                         commit_reversible_command ();
 560                 }
 561
 562         } else {
 563
 564                 distance = get_nudge_distance (playhead_cursor->current_frame (), next_distance);
 565
 566                 if (playhead_cursor->current_frame () > distance) {
 567                         _session->request_locate (playhead_cursor->current_frame () - distance);
 568                 } else {
 569                         _session->goto_start();
 570                 }
 571         }
 572 }
 573
 574 void
 575 Editor::nudge_forward_capture_offset ()
 576 {
 577         RegionSelection rs = get_regions_from_selection_and_entered ();
 578
 579         if (!_session || rs.empty()) {
 580                 return;
 581         }
 582
 583         begin_reversible_command (_("nudge forward"));
 584
 585         framepos_t const distance = _session->worst_output_latency();
 586
 587         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 588                 boost::shared_ptr<Region> r ((*i)->region());
 589
 590                 r->clear_changes ();
 591                 r->set_position (r->position() + distance);
 592                 _session->add_command(new StatefulDiffCommand (r));
 593         }
 594
 595         commit_reversible_command ();
 596 }
 597
 598 void
 599 Editor::nudge_backward_capture_offset ()
 600 {
 601         RegionSelection rs = get_regions_from_selection_and_entered ();
 602
 603         if (!_session || rs.empty()) {
 604                 return;
 605         }
 606
 607         begin_reversible_command (_("nudge backward"));
 608
 609         framepos_t const distance = _session->worst_output_latency();
 610
 611         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 612                 boost::shared_ptr<Region> r ((*i)->region());
 613
 614                 r->clear_changes ();
 615
 616                 if (r->position() > distance) {
 617                         r->set_position (r->position() - distance);
 618                 } else {
 619                         r->set_position (0);
 620                 }
 621                 _session->add_command(new StatefulDiffCommand (r));
 622         }
 623
 624         commit_reversible_command ();
 625 }
 626
 627 struct RegionSelectionPositionSorter {
 628         bool operator() (RegionView* a, RegionView* b) {
 629                 return a->region()->position() < b->region()->position();
 630         }
 631 };
 632
 633 void
 634 Editor::sequence_regions ()
 635 {
 636         framepos_t r_end;
 637         framepos_t r_end_prev;
 638
 639         int iCount=0;
 640
 641         if (!_session) {
 642                 return;
 643         }
 644
 645         RegionSelection rs = get_regions_from_selection_and_entered ();
 646         rs.sort(RegionSelectionPositionSorter());
 647
 648         if (!rs.empty()) {
 649
 650                 bool in_command = false;
 651
 652                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 653                         boost::shared_ptr<Region> r ((*i)->region());
 654
 655                         r->clear_changes();
 656
 657                         if(r->locked())
 658                         {
 659                                 continue;
 660                         }
 661                         if(r->position_locked())
 662                         {
 663                                 continue;
 664                         }
 665                         if(iCount>0)
 666                         {
 667                                 r_end_prev=r_end;
 668                                 r->set_position(r_end_prev);
 669                         }
 670
 671                         if (!in_command) {
 672                                 begin_reversible_command (_("sequence regions"));
 673                                 in_command = true;
 674                         }
 675                         _session->add_command (new StatefulDiffCommand (r));
 676
 677                         r_end=r->position() + r->length();
 678
 679                         iCount++;
 680                 }
 681
 682                 if (in_command) {
 683                         commit_reversible_command ();
 684                 }
 685         }
 686 }
 687
 688
 689 /* DISPLAY MOTION */
 690
 691 void
 692 Editor::move_to_start ()
 693 {
 694         _session->goto_start ();
 695 }
 696
 697 void
 698 Editor::move_to_end ()
 699 {
 700
 701         _session->request_locate (_session->current_end_frame());
 702 }
 703
 704 void
 705 Editor::build_region_boundary_cache ()
 706 {
 707         framepos_t pos = 0;
 708         vector<RegionPoint> interesting_points;
 709         boost::shared_ptr<Region> r;
 710         TrackViewList tracks;
 711         bool at_end = false;
 712
 713         region_boundary_cache.clear ();
 714
 715         if (_session == 0) {
 716                 return;
 717         }
 718
 719         switch (_snap_type) {
 720         case SnapToRegionStart:
 721                 interesting_points.push_back (Start);
 722                 break;
 723         case SnapToRegionEnd:
 724                 interesting_points.push_back (End);
 725                 break;
 726         case SnapToRegionSync:
 727                 interesting_points.push_back (SyncPoint);
 728                 break;
 729         case SnapToRegionBoundary:
 730                 interesting_points.push_back (Start);
 731                 interesting_points.push_back (End);
 732                 break;
 733         default:
 734                 fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), _snap_type) << endmsg;
 735                 abort(); /*NOTREACHED*/
 736                 return;
 737         }
 738
 739         TimeAxisView *ontrack = 0;
 740         TrackViewList tlist;
 741
 742         if (!selection->tracks.empty()) {
 743                 tlist = selection->tracks.filter_to_unique_playlists ();
 744         } else {
 745                 tlist = track_views.filter_to_unique_playlists ();
 746         }
 747
 748         while (pos < _session->current_end_frame() && !at_end) {
 749
 750                 framepos_t rpos;
 751                 framepos_t lpos = max_framepos;
 752
 753                 for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 754
 755                         if ((r = find_next_region (pos, *p, 1, tlist, &ontrack)) == 0) {
 756                                 if (*p == interesting_points.back()) {
 757                                         at_end = true;
 758                                 }
 759                                 /* move to next point type */
 760                                 continue;
 761                         }
 762
 763                         switch (*p) {
 764                         case Start:
 765                                 rpos = r->first_frame();
 766                                 break;
 767
 768                         case End:
 769                                 rpos = r->last_frame();
 770                                 break;
 771
 772                         case SyncPoint:
 773                                 rpos = r->sync_position ();
 774                                 break;
 775
 776                         default:
 777                                 break;
 778                         }
 779
 780                         float speed = 1.0f;
 781                         RouteTimeAxisView *rtav;
 782
 783                         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 784                                 if (rtav->track() != 0) {
 785                                         speed = rtav->track()->speed();
 786                                 }
 787                         }
 788
 789                         rpos = track_frame_to_session_frame (rpos, speed);
 790
 791                         if (rpos < lpos) {
 792                                 lpos = rpos;
 793                         }
 794
 795                         /* prevent duplicates, but we don't use set<> because we want to be able
 796                            to sort later.
 797                         */
 798
 799                         vector<framepos_t>::iterator ri;
 800
 801                         for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
 802                                 if (*ri == rpos) {
 803                                         break;
 804                                 }
 805                         }
 806
 807                         if (ri == region_boundary_cache.end()) {
 808                                 region_boundary_cache.push_back (rpos);
 809                         }
 810                 }
 811
 812                 pos = lpos + 1;
 813         }
 814
 815         /* finally sort to be sure that the order is correct */
 816
 817         sort (region_boundary_cache.begin(), region_boundary_cache.end());
 818 }
 819
 820 boost::shared_ptr<Region>
 821 Editor::find_next_region (framepos_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 822 {
 823         TrackViewList::iterator i;
 824         framepos_t closest = max_framepos;
 825         boost::shared_ptr<Region> ret;
 826         framepos_t rpos = 0;
 827
 828         float track_speed;
 829         framepos_t track_frame;
 830         RouteTimeAxisView *rtav;
 831
 832         for (i = tracks.begin(); i != tracks.end(); ++i) {
 833
 834                 framecnt_t distance;
 835                 boost::shared_ptr<Region> r;
 836
 837                 track_speed = 1.0f;
 838                 if ( (rtav = dynamic_cast<RouteTimeAxisView*>(*i)) != 0 ) {
 839                         if (rtav->track()!=0)
 840                                 track_speed = rtav->track()->speed();
 841                 }
 842
 843                 track_frame = session_frame_to_track_frame(frame, track_speed);
 844
 845                 if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
 846                         continue;
 847                 }
 848
 849                 switch (point) {
 850                 case Start:
 851                         rpos = r->first_frame ();
 852                         break;
 853
 854                 case End:
 855                         rpos = r->last_frame ();
 856                         break;
 857
 858                 case SyncPoint:
 859                         rpos = r->sync_position ();
 860                         break;
 861                 }
 862
 863                 // rpos is a "track frame", converting it to "_session frame"
 864                 rpos = track_frame_to_session_frame(rpos, track_speed);
 865
 866                 if (rpos > frame) {
 867                         distance = rpos - frame;
 868                 } else {
 869                         distance = frame - rpos;
 870                 }
 871
 872                 if (distance < closest) {
 873                         closest = distance;
 874                         if (ontrack != 0)
 875                                 *ontrack = (*i);
 876                         ret = r;
 877                 }
 878         }
 879
 880         return ret;
 881 }
 882
 883 framepos_t
 884 Editor::find_next_region_boundary (framepos_t pos, int32_t dir, const TrackViewList& tracks)
 885 {
 886         framecnt_t distance = max_framepos;
 887         framepos_t current_nearest = -1;
 888
 889         for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
 890                 framepos_t contender;
 891                 framecnt_t d;
 892
 893                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 894
 895                 if (!rtv) {
 896                         continue;
 897                 }
 898
 899                 if ((contender = rtv->find_next_region_boundary (pos, dir)) < 0) {
 900                         continue;
 901                 }
 902
 903                 d = ::llabs (pos - contender);
 904
 905                 if (d < distance) {
 906                         current_nearest = contender;
 907                         distance = d;
 908                 }
 909         }
 910
 911         return current_nearest;
 912 }
 913
 914 framepos_t
 915 Editor::get_region_boundary (framepos_t pos, int32_t dir, bool with_selection, bool only_onscreen)
 916 {
 917         framepos_t target;
 918         TrackViewList tvl;
 919
 920         if (with_selection && Config->get_region_boundaries_from_selected_tracks()) {
 921
 922                 if (!selection->tracks.empty()) {
 923
 924                         target = find_next_region_boundary (pos, dir, selection->tracks);
 925
 926                 } else {
 927
 928                         if (only_onscreen || Config->get_region_boundaries_from_onscreen_tracks()) {
 929                                 get_onscreen_tracks (tvl);
 930                                 target = find_next_region_boundary (pos, dir, tvl);
 931                         } else {
 932                                 target = find_next_region_boundary (pos, dir, track_views);
 933                         }
 934                 }
 935
 936         } else {
 937
 938                 if (only_onscreen || Config->get_region_boundaries_from_onscreen_tracks()) {
 939                         get_onscreen_tracks (tvl);
 940                         target = find_next_region_boundary (pos, dir, tvl);
 941                 } else {
 942                         target = find_next_region_boundary (pos, dir, track_views);
 943                 }
 944         }
 945
 946         return target;
 947 }
 948
 949 void
 950 Editor::cursor_to_region_boundary (bool with_selection, int32_t dir)
 951 {
 952         framepos_t pos = playhead_cursor->current_frame ();
 953         framepos_t target;
 954
 955         if (!_session) {
 956                 return;
 957         }
 958
 959         // so we don't find the current region again..
 960         if (dir > 0 || pos > 0) {
 961                 pos += dir;
 962         }
 963
 964         if ((target = get_region_boundary (pos, dir, with_selection, false)) < 0) {
 965                 return;
 966         }
 967
 968         _session->request_locate (target);
 969 }
 970
 971 void
 972 Editor::cursor_to_next_region_boundary (bool with_selection)
 973 {
 974         cursor_to_region_boundary (with_selection, 1);
 975 }
 976
 977 void
 978 Editor::cursor_to_previous_region_boundary (bool with_selection)
 979 {
 980         cursor_to_region_boundary (with_selection, -1);
 981 }
 982
 983 void
 984 Editor::cursor_to_region_point (EditorCursor* cursor, RegionPoint point, int32_t dir)
 985 {
 986         boost::shared_ptr<Region> r;
 987         framepos_t pos = cursor->current_frame ();
 988
 989         if (!_session) {
 990                 return;
 991         }
 992
 993         TimeAxisView *ontrack = 0;
 994
 995         // so we don't find the current region again..
 996         if (dir>0 || pos>0)
 997                 pos+=dir;
 998
 999         if (!selection->tracks.empty()) {
1000
1001                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1002
1003         } else if (clicked_axisview) {
1004
1005                 TrackViewList t;
1006                 t.push_back (clicked_axisview);
1007
1008                 r = find_next_region (pos, point, dir, t, &ontrack);
1009
1010         } else {
1011
1012                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1013         }
1014
1015         if (r == 0) {
1016                 return;
1017         }
1018
1019         switch (point) {
1020         case Start:
1021                 pos = r->first_frame ();
1022                 break;
1023
1024         case End:
1025                 pos = r->last_frame ();
1026                 break;
1027
1028         case SyncPoint:
1029                 pos = r->sync_position ();
1030                 break;
1031         }
1032
1033         float speed = 1.0f;
1034         RouteTimeAxisView *rtav;
1035
1036         if ( ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
1037                 if (rtav->track() != 0) {
1038                         speed = rtav->track()->speed();
1039                 }
1040         }
1041
1042         pos = track_frame_to_session_frame(pos, speed);
1043
1044         if (cursor == playhead_cursor) {
1045                 _session->request_locate (pos);
1046         } else {
1047                 cursor->set_position (pos);
1048         }
1049 }
1050
1051 void
1052 Editor::cursor_to_next_region_point (EditorCursor* cursor, RegionPoint point)
1053 {
1054         cursor_to_region_point (cursor, point, 1);
1055 }
1056
1057 void
1058 Editor::cursor_to_previous_region_point (EditorCursor* cursor, RegionPoint point)
1059 {
1060         cursor_to_region_point (cursor, point, -1);
1061 }
1062
1063 void
1064 Editor::cursor_to_selection_start (EditorCursor *cursor)
1065 {
1066         framepos_t pos = 0;
1067
1068         switch (mouse_mode) {
1069         case MouseObject:
1070                 if (!selection->regions.empty()) {
1071                         pos = selection->regions.start();
1072                 }
1073                 break;
1074
1075         case MouseRange:
1076                 if (!selection->time.empty()) {
1077                         pos = selection->time.start ();
1078                 }
1079                 break;
1080
1081         default:
1082                 return;
1083         }
1084
1085         if (cursor == playhead_cursor) {
1086                 _session->request_locate (pos);
1087         } else {
1088                 cursor->set_position (pos);
1089         }
1090 }
1091
1092 void
1093 Editor::cursor_to_selection_end (EditorCursor *cursor)
1094 {
1095         framepos_t pos = 0;
1096
1097         switch (mouse_mode) {
1098         case MouseObject:
1099                 if (!selection->regions.empty()) {
1100                         pos = selection->regions.end_frame();
1101                 }
1102                 break;
1103
1104         case MouseRange:
1105                 if (!selection->time.empty()) {
1106                         pos = selection->time.end_frame ();
1107                 }
1108                 break;
1109
1110         default:
1111                 return;
1112         }
1113
1114         if (cursor == playhead_cursor) {
1115                 _session->request_locate (pos);
1116         } else {
1117                 cursor->set_position (pos);
1118         }
1119 }
1120
1121 void
1122 Editor::selected_marker_to_region_boundary (bool with_selection, int32_t dir)
1123 {
1124         framepos_t target;
1125         Location* loc;
1126         bool ignored;
1127
1128         if (!_session) {
1129                 return;
1130         }
1131
1132         if (selection->markers.empty()) {
1133                 framepos_t mouse;
1134                 bool ignored;
1135
1136                 if (!mouse_frame (mouse, ignored)) {
1137                         return;
1138                 }
1139
1140                 add_location_mark (mouse);
1141         }
1142
1143         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1144                 return;
1145         }
1146
1147         framepos_t pos = loc->start();
1148
1149         // so we don't find the current region again..
1150         if (dir > 0 || pos > 0) {
1151                 pos += dir;
1152         }
1153
1154         if ((target = get_region_boundary (pos, dir, with_selection, false)) < 0) {
1155                 return;
1156         }
1157
1158         loc->move_to (target, 0);
1159 }
1160
1161 void
1162 Editor::selected_marker_to_next_region_boundary (bool with_selection)
1163 {
1164         selected_marker_to_region_boundary (with_selection, 1);
1165 }
1166
1167 void
1168 Editor::selected_marker_to_previous_region_boundary (bool with_selection)
1169 {
1170         selected_marker_to_region_boundary (with_selection, -1);
1171 }
1172
1173 void
1174 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
1175 {
1176         boost::shared_ptr<Region> r;
1177         framepos_t pos;
1178         Location* loc;
1179         bool ignored;
1180
1181         if (!_session || selection->markers.empty()) {
1182                 return;
1183         }
1184
1185         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1186                 return;
1187         }
1188
1189         TimeAxisView *ontrack = 0;
1190
1191         pos = loc->start();
1192
1193         // so we don't find the current region again..
1194         if (dir>0 || pos>0)
1195                 pos+=dir;
1196
1197         if (!selection->tracks.empty()) {
1198
1199                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1200
1201         } else {
1202
1203                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1204         }
1205
1206         if (r == 0) {
1207                 return;
1208         }
1209
1210         switch (point) {
1211         case Start:
1212                 pos = r->first_frame ();
1213                 break;
1214
1215         case End:
1216                 pos = r->last_frame ();
1217                 break;
1218
1219         case SyncPoint:
1220                 pos = r->adjust_to_sync (r->first_frame());
1221                 break;
1222         }
1223
1224         float speed = 1.0f;
1225         RouteTimeAxisView *rtav;
1226
1227         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0) {
1228                 if (rtav->track() != 0) {
1229                         speed = rtav->track()->speed();
1230                 }
1231         }
1232
1233         pos = track_frame_to_session_frame(pos, speed);
1234
1235         loc->move_to (pos, 0);
1236 }
1237
1238 void
1239 Editor::selected_marker_to_next_region_point (RegionPoint point)
1240 {
1241         selected_marker_to_region_point (point, 1);
1242 }
1243
1244 void
1245 Editor::selected_marker_to_previous_region_point (RegionPoint point)
1246 {
1247         selected_marker_to_region_point (point, -1);
1248 }
1249
1250 void
1251 Editor::selected_marker_to_selection_start ()
1252 {
1253         framepos_t pos = 0;
1254         Location* loc;
1255         bool ignored;
1256
1257         if (!_session || selection->markers.empty()) {
1258                 return;
1259         }
1260
1261         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1262                 return;
1263         }
1264
1265         switch (mouse_mode) {
1266         case MouseObject:
1267                 if (!selection->regions.empty()) {
1268                         pos = selection->regions.start();
1269                 }
1270                 break;
1271
1272         case MouseRange:
1273                 if (!selection->time.empty()) {
1274                         pos = selection->time.start ();
1275                 }
1276                 break;
1277
1278         default:
1279                 return;
1280         }
1281
1282         loc->move_to (pos, 0);
1283 }
1284
1285 void
1286 Editor::selected_marker_to_selection_end ()
1287 {
1288         framepos_t pos = 0;
1289         Location* loc;
1290         bool ignored;
1291
1292         if (!_session || selection->markers.empty()) {
1293                 return;
1294         }
1295
1296         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1297                 return;
1298         }
1299
1300         switch (mouse_mode) {
1301         case MouseObject:
1302                 if (!selection->regions.empty()) {
1303                         pos = selection->regions.end_frame();
1304                 }
1305                 break;
1306
1307         case MouseRange:
1308                 if (!selection->time.empty()) {
1309                         pos = selection->time.end_frame ();
1310                 }
1311                 break;
1312
1313         default:
1314                 return;
1315         }
1316
1317         loc->move_to (pos, 0);
1318 }
1319
1320 void
1321 Editor::scroll_playhead (bool forward)
1322 {
1323         framepos_t pos = playhead_cursor->current_frame ();
1324         framecnt_t delta = (framecnt_t) floor (current_page_samples() / 0.8);
1325
1326         if (forward) {
1327                 if (pos == max_framepos) {
1328                         return;
1329                 }
1330
1331                 if (pos < max_framepos - delta) {
1332                         pos += delta ;
1333                 } else {
1334                         pos = max_framepos;
1335                 }
1336
1337         } else {
1338
1339                 if (pos == 0) {
1340                         return;
1341                 }
1342
1343                 if (pos > delta) {
1344                         pos -= delta;
1345                 } else {
1346                         pos = 0;
1347                 }
1348         }
1349
1350         _session->request_locate (pos);
1351 }
1352
1353 void
1354 Editor::cursor_align (bool playhead_to_edit)
1355 {
1356         if (!_session) {
1357                 return;
1358         }
1359
1360         if (playhead_to_edit) {
1361
1362                 if (selection->markers.empty()) {
1363                         return;
1364                 }
1365
1366                 _session->request_locate (selection->markers.front()->position(), _session->transport_rolling());
1367
1368         } else {
1369                 const int32_t divisions = get_grid_music_divisions (0);
1370                 /* move selected markers to playhead */
1371
1372                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
1373                         bool ignored;
1374
1375                         Location* loc = find_location_from_marker (*i, ignored);
1376
1377                         if (loc->is_mark()) {
1378                                 loc->set_start (playhead_cursor->current_frame (), false, true, divisions);
1379                         } else {
1380                                 loc->set (playhead_cursor->current_frame (),
1381                                           playhead_cursor->current_frame () + loc->length(), true, divisions);
1382                         }
1383                 }
1384         }
1385 }
1386
1387 void
1388 Editor::scroll_backward (float pages)
1389 {
1390         framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * samples_per_pixel);
1391         framepos_t const cnt = (framepos_t) floor (pages * one_page);
1392
1393         framepos_t frame;
1394         if (leftmost_frame < cnt) {
1395                 frame = 0;
1396         } else {
1397                 frame = leftmost_frame - cnt;
1398         }
1399
1400         reset_x_origin (frame);
1401 }
1402
1403 void
1404 Editor::scroll_forward (float pages)
1405 {
1406         framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * samples_per_pixel);
1407         framepos_t const cnt = (framepos_t) floor (pages * one_page);
1408
1409         framepos_t frame;
1410         if (max_framepos - cnt < leftmost_frame) {
1411                 frame = max_framepos - cnt;
1412         } else {
1413                 frame = leftmost_frame + cnt;
1414         }
1415
1416         reset_x_origin (frame);
1417 }
1418
1419 void
1420 Editor::scroll_tracks_down ()
1421 {
1422         double vert_value = vertical_adjustment.get_value() + vertical_adjustment.get_page_size();
1423         if (vert_value > vertical_adjustment.get_upper() - _visible_canvas_height) {
1424                 vert_value = vertical_adjustment.get_upper() - _visible_canvas_height;
1425         }
1426
1427         vertical_adjustment.set_value (vert_value);
1428 }
1429
1430 void
1431 Editor::scroll_tracks_up ()
1432 {
1433         vertical_adjustment.set_value (vertical_adjustment.get_value() - vertical_adjustment.get_page_size());
1434 }
1435
1436 void
1437 Editor::scroll_tracks_down_line ()
1438 {
1439         double vert_value = vertical_adjustment.get_value() + 60;
1440
1441         if (vert_value > vertical_adjustment.get_upper() - _visible_canvas_height) {
1442                 vert_value = vertical_adjustment.get_upper() - _visible_canvas_height;
1443         }
1444
1445         vertical_adjustment.set_value (vert_value);
1446 }
1447
1448 void
1449 Editor::scroll_tracks_up_line ()
1450 {
1451         reset_y_origin (vertical_adjustment.get_value() - 60);
1452 }
1453
1454 void
1455 Editor::select_topmost_track ()
1456 {
1457         const double top_of_trackviews = vertical_adjustment.get_value();
1458         for (TrackViewList::iterator t = track_views.begin(); t != track_views.end(); ++t) {
1459                 if ((*t)->hidden()) {
1460                         continue;
1461                 }
1462                 std::pair<TimeAxisView*,double> res = (*t)->covers_y_position (top_of_trackviews);
1463                 if (res.first) {
1464                         selection->set (*t);
1465                         break;
1466                 }
1467         }
1468 }
1469
1470 bool
1471 Editor::scroll_down_one_track (bool skip_child_views)
1472 {
1473         TrackViewList::reverse_iterator next = track_views.rend();
1474         const double top_of_trackviews = vertical_adjustment.get_value();
1475
1476         for (TrackViewList::reverse_iterator t = track_views.rbegin(); t != track_views.rend(); ++t) {
1477                 if ((*t)->hidden()) {
1478                         continue;
1479                 }
1480
1481                 /* If this is the upper-most visible trackview, we want to display
1482                  * the one above it (next)
1483                  *
1484                  * Note that covers_y_position() is recursive and includes child views
1485                  */
1486                 std::pair<TimeAxisView*,double> res = (*t)->covers_y_position (top_of_trackviews);
1487
1488                 if (res.first) {
1489                         if (skip_child_views) {
1490                                 break;
1491                         }
1492                         /* automation lane (one level, non-recursive)
1493                          *
1494                          * - if no automation lane exists -> move to next tack
1495                          * - if the first (here: bottom-most) matches -> move to next tack
1496                          * - if no y-axis match is found -> the current track is at the top
1497                          *     -> move to last (here: top-most) automation lane
1498                          */
1499                         TimeAxisView::Children kids = (*t)->get_child_list();
1500                         TimeAxisView::Children::reverse_iterator nkid = kids.rend();
1501
1502                         for (TimeAxisView::Children::reverse_iterator ci = kids.rbegin(); ci != kids.rend(); ++ci) {
1503                                 if ((*ci)->hidden()) {
1504                                         continue;
1505                                 }
1506
1507                                 std::pair<TimeAxisView*,double> dev;
1508                                 dev = (*ci)->covers_y_position (top_of_trackviews);
1509                                 if (dev.first) {
1510                                         /* some automation lane is currently at the top */
1511                                         if (ci == kids.rbegin()) {
1512                                                 /* first (bottom-most) autmation lane is at the top.
1513                                                  * -> move to next track
1514                                                  */
1515                                                 nkid = kids.rend();
1516                                         }
1517                                         break;
1518                                 }
1519                                 nkid = ci;
1520                         }
1521
1522                         if (nkid != kids.rend()) {
1523                                 ensure_time_axis_view_is_visible (**nkid, true);
1524                                 return true;
1525                         }
1526                         break;
1527                 }
1528                 next = t;
1529         }
1530
1531         /* move to the track below the first one that covers the */
1532
1533         if (next != track_views.rend()) {
1534                 ensure_time_axis_view_is_visible (**next, true);
1535                 return true;
1536         }
1537
1538         return false;
1539 }
1540
1541 bool
1542 Editor::scroll_up_one_track (bool skip_child_views)
1543 {
1544         TrackViewList::iterator prev = track_views.end();
1545         double top_of_trackviews = vertical_adjustment.get_value ();
1546
1547         for (TrackViewList::iterator t = track_views.begin(); t != track_views.end(); ++t) {
1548
1549                 if ((*t)->hidden()) {
1550                         continue;
1551                 }
1552
1553                 /* find the trackview at the top of the trackview group
1554                  *
1555                  * Note that covers_y_position() is recursive and includes child views
1556                  */
1557                 std::pair<TimeAxisView*,double> res = (*t)->covers_y_position (top_of_trackviews);
1558
1559                 if (res.first) {
1560                         if (skip_child_views) {
1561                                 break;
1562                         }
1563                         /* automation lane (one level, non-recursive)
1564                          *
1565                          * - if no automation lane exists -> move to prev tack
1566                          * - if no y-axis match is found -> the current track is at the top -> move to prev track
1567                          *     (actually last automation lane of previous track, see below)
1568                          * - if first (top-most) lane is at the top -> move to this track
1569                          * - else move up one lane
1570                          */
1571                         TimeAxisView::Children kids = (*t)->get_child_list();
1572                         TimeAxisView::Children::iterator pkid = kids.end();
1573
1574                         for (TimeAxisView::Children::iterator ci = kids.begin(); ci != kids.end(); ++ci) {
1575                                 if ((*ci)->hidden()) {
1576                                         continue;
1577                                 }
1578
1579                                 std::pair<TimeAxisView*,double> dev;
1580                                 dev = (*ci)->covers_y_position (top_of_trackviews);
1581                                 if (dev.first) {
1582                                         /* some automation lane is currently at the top */
1583                                         if (ci == kids.begin()) {
1584                                                 /* first (top-most) autmation lane is at the top.
1585                                                  * jump directly to this track's top
1586                                                  */
1587                                                 ensure_time_axis_view_is_visible (**t, true);
1588                                                 return true;
1589                                         }
1590                                         else if (pkid != kids.end()) {
1591                                                 /* some other automation lane is at the top.
1592                                                  * move up to prev automation lane.
1593                                                  */
1594                                                 ensure_time_axis_view_is_visible (**pkid, true);
1595                                                 return true;
1596                                         }
1597                                         assert(0); // not reached
1598                                         break;
1599                                 }
1600                                 pkid = ci;
1601                         }
1602                         break;
1603                 }
1604
1605                 prev = t;
1606         }
1607
1608         if (prev != track_views.end()) {
1609                 // move to bottom-most automation-lane of the previous track
1610                 TimeAxisView::Children kids = (*prev)->get_child_list();
1611                 TimeAxisView::Children::reverse_iterator pkid = kids.rend();
1612                 if (!skip_child_views) {
1613                         // find the last visible lane
1614                         for (TimeAxisView::Children::reverse_iterator ci = kids.rbegin(); ci != kids.rend(); ++ci) {
1615                                 if (!(*ci)->hidden()) {
1616                                         pkid = ci;
1617                                         break;
1618                                 }
1619                         }
1620                 }
1621                 if (pkid != kids.rend()) {
1622                         ensure_time_axis_view_is_visible (**pkid, true);
1623                 } else  {
1624                         ensure_time_axis_view_is_visible (**prev, true);
1625                 }
1626                 return true;
1627         }
1628
1629         return false;
1630 }
1631
1632 void
1633 Editor::scroll_left_step ()
1634 {
1635         framepos_t xdelta = (current_page_samples() / 8);
1636
1637         if (leftmost_frame > xdelta) {
1638                 reset_x_origin (leftmost_frame - xdelta);
1639         } else {
1640                 reset_x_origin (0);
1641         }
1642 }
1643
1644
1645 void
1646 Editor::scroll_right_step ()
1647 {
1648         framepos_t xdelta = (current_page_samples() / 8);
1649
1650         if (max_framepos - xdelta > leftmost_frame) {
1651                 reset_x_origin (leftmost_frame + xdelta);
1652         } else {
1653                 reset_x_origin (max_framepos - current_page_samples());
1654         }
1655 }
1656
1657 void
1658 Editor::scroll_left_half_page ()
1659 {
1660         framepos_t xdelta = (current_page_samples() / 2);
1661         if (leftmost_frame > xdelta) {
1662                 reset_x_origin (leftmost_frame - xdelta);
1663         } else {
1664                 reset_x_origin (0);
1665         }
1666 }
1667
1668 void
1669 Editor::scroll_right_half_page ()
1670 {
1671         framepos_t xdelta = (current_page_samples() / 2);
1672         if (max_framepos - xdelta > leftmost_frame) {
1673                 reset_x_origin (leftmost_frame + xdelta);
1674         } else {
1675                 reset_x_origin (max_framepos - current_page_samples());
1676         }
1677 }
1678
1679 /* ZOOM */
1680
1681 void
1682 Editor::tav_zoom_step (bool coarser)
1683 {
1684         DisplaySuspender ds;
1685
1686         TrackViewList* ts;
1687
1688         if (selection->tracks.empty()) {
1689                 ts = &track_views;
1690         } else {
1691                 ts = &selection->tracks;
1692         }
1693
1694         for (TrackViewList::iterator i = ts->begin(); i != ts->end(); ++i) {
1695                 TimeAxisView *tv = (static_cast<TimeAxisView*>(*i));
1696                         tv->step_height (coarser);
1697         }
1698 }
1699
1700 void
1701 Editor::tav_zoom_smooth (bool coarser, bool force_all)
1702 {
1703         DisplaySuspender ds;
1704
1705         TrackViewList* ts;
1706
1707         if (selection->tracks.empty() || force_all) {
1708                 ts = &track_views;
1709         } else {
1710                 ts = &selection->tracks;
1711         }
1712
1713         for (TrackViewList::iterator i = ts->begin(); i != ts->end(); ++i) {
1714                 TimeAxisView *tv = (static_cast<TimeAxisView*>(*i));
1715                 uint32_t h = tv->current_height ();
1716
1717                 if (coarser) {
1718                         if (h > 5) {
1719                                 h -= 5; // pixels
1720                                 if (h >= TimeAxisView::preset_height (HeightSmall)) {
1721                                         tv->set_height (h);
1722                                 }
1723                         }
1724                 } else {
1725                         tv->set_height (h + 5);
1726                 }
1727         }
1728 }
1729
1730 void
1731 Editor::temporal_zoom_step_mouse_focus_scale (bool zoom_out, double scale)
1732 {
1733         Editing::ZoomFocus temp_focus = zoom_focus;
1734         zoom_focus = Editing::ZoomFocusMouse;
1735         temporal_zoom_step_scale (zoom_out, scale);
1736         zoom_focus = temp_focus;
1737 }
1738
1739 void
1740 Editor::temporal_zoom_step_mouse_focus (bool zoom_out)
1741 {
1742         temporal_zoom_step_mouse_focus_scale (zoom_out, 2.0);
1743 }
1744
1745 void
1746 Editor::temporal_zoom_step (bool zoom_out)
1747 {
1748         temporal_zoom_step_scale (zoom_out, 2.0);
1749 }
1750
1751 void
1752 Editor::temporal_zoom_step_scale (bool zoom_out, double scale)
1753 {
1754         ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, zoom_out, scale)
1755
1756         framecnt_t nspp = samples_per_pixel;
1757
1758         if (zoom_out) {
1759                 nspp *= scale;
1760                 if (nspp == samples_per_pixel) {
1761                         nspp *= 2.0;
1762                 }
1763         } else {
1764                 nspp /= scale;
1765                 if (nspp == samples_per_pixel) {
1766                         nspp /= 2.0;
1767                 }
1768         }
1769
1770         temporal_zoom (nspp);
1771 }
1772
1773 void
1774 Editor::temporal_zoom (framecnt_t fpp)
1775 {
1776         if (!_session) {
1777                 return;
1778         }
1779
1780         framepos_t current_page = current_page_samples();
1781         framepos_t current_leftmost = leftmost_frame;
1782         framepos_t current_rightmost;
1783         framepos_t current_center;
1784         framepos_t new_page_size;
1785         framepos_t half_page_size;
1786         framepos_t leftmost_after_zoom = 0;
1787         framepos_t where;
1788         bool in_track_canvas;
1789         bool use_mouse_frame = true;
1790         framecnt_t nfpp;
1791         double l;
1792
1793         if (fpp == samples_per_pixel) {
1794                 return;
1795         }
1796
1797         // Imposing an arbitrary limit to zoom out as too much zoom out produces
1798         // segfaults for lack of memory. If somebody decides this is not high enough I
1799         // believe it can be raisen to higher values but some limit must be in place.
1800         //
1801         // This constant represents 1 day @ 48kHz on a 1600 pixel wide display
1802         // all of which is used for the editor track displays. The whole day
1803         // would be 4147200000 samples, so 2592000 samples per pixel.
1804
1805         nfpp = min (fpp, (framecnt_t) 2592000);
1806         nfpp = max ((framecnt_t) 1, nfpp);
1807
1808         new_page_size = (framepos_t) floor (_visible_canvas_width * nfpp);
1809         half_page_size = new_page_size / 2;
1810
1811         switch (zoom_focus) {
1812         case ZoomFocusLeft:
1813                 leftmost_after_zoom = current_leftmost;
1814                 break;
1815
1816         case ZoomFocusRight:
1817                 current_rightmost = leftmost_frame + current_page;
1818                 if (current_rightmost < new_page_size) {
1819                         leftmost_after_zoom = 0;
1820                 } else {
1821                         leftmost_after_zoom = current_rightmost - new_page_size;
1822                 }
1823                 break;
1824
1825         case ZoomFocusCenter:
1826                 current_center = current_leftmost + (current_page/2);
1827                 if (current_center < half_page_size) {
1828                         leftmost_after_zoom = 0;
1829                 } else {
1830                         leftmost_after_zoom = current_center - half_page_size;
1831                 }
1832                 break;
1833
1834         case ZoomFocusPlayhead:
1835                 /* centre playhead */
1836                 l = playhead_cursor->current_frame () - (new_page_size * 0.5);
1837
1838                 if (l < 0) {
1839                         leftmost_after_zoom = 0;
1840                 } else if (l > max_framepos) {
1841                         leftmost_after_zoom = max_framepos - new_page_size;
1842                 } else {
1843                         leftmost_after_zoom = (framepos_t) l;
1844                 }
1845                 break;
1846
1847         case ZoomFocusMouse:
1848                 /* try to keep the mouse over the same point in the display */
1849
1850                 if (_drags->active()) {
1851                         where = _drags->current_pointer_frame ();
1852                 } else if (!mouse_frame (where, in_track_canvas)) {
1853                         use_mouse_frame = false;
1854                 }
1855
1856                 if (use_mouse_frame) {
1857                         l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1858
1859                         if (l < 0) {
1860                                 leftmost_after_zoom = 0;
1861                         } else if (l > max_framepos) {
1862                                 leftmost_after_zoom = max_framepos - new_page_size;
1863                         } else {
1864                                 leftmost_after_zoom = (framepos_t) l;
1865                         }
1866                 } else {
1867                         /* use playhead instead */
1868                         where = playhead_cursor->current_frame ();
1869
1870                         if (where < half_page_size) {
1871                                 leftmost_after_zoom = 0;
1872                         } else {
1873                                 leftmost_after_zoom = where - half_page_size;
1874                         }
1875                 }
1876                 break;
1877
1878         case ZoomFocusEdit:
1879                 /* try to keep the edit point in the same place */
1880                 where = get_preferred_edit_position ();
1881
1882                 if (where > 0) {
1883
1884                         double l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1885
1886                         if (l < 0) {
1887                                 leftmost_after_zoom = 0;
1888                         } else if (l > max_framepos) {
1889                                 leftmost_after_zoom = max_framepos - new_page_size;
1890                         } else {
1891                                 leftmost_after_zoom = (framepos_t) l;
1892                         }
1893
1894                 } else {
1895                         /* edit point not defined */
1896                         return;
1897                 }
1898                 break;
1899
1900         }
1901
1902         // leftmost_after_zoom = min (leftmost_after_zoom, _session->current_end_frame());
1903
1904         reposition_and_zoom (leftmost_after_zoom, nfpp);
1905 }
1906
1907 void
1908 Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
1909 {
1910         /* this func helps make sure we leave a little space
1911            at each end of the editor so that the zoom doesn't fit the region
1912            precisely to the screen.
1913         */
1914
1915         GdkScreen* screen = gdk_screen_get_default ();
1916         const gint pixwidth = gdk_screen_get_width (screen);
1917         const gint mmwidth = gdk_screen_get_width_mm (screen);
1918         const double pix_per_mm = (double) pixwidth/ (double) mmwidth;
1919         const double one_centimeter_in_pixels = pix_per_mm * 10.0;
1920
1921         const framepos_t range = end - start;
1922         const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
1923         const framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpp);
1924
1925         if (start > extra_samples) {
1926                 start -= extra_samples;
1927         } else {
1928                 start = 0;
1929         }
1930
1931         if (max_framepos - extra_samples > end) {
1932                 end += extra_samples;
1933         } else {
1934                 end = max_framepos;
1935         }
1936 }
1937
1938 bool
1939 Editor::get_selection_extents (framepos_t &start, framepos_t &end) const
1940 {
1941         start = max_framepos;
1942         end = 0;
1943         bool ret = true;
1944
1945         //ToDo:  if notes are selected, set extents to that selection
1946
1947         //ToDo:  if control points are selected, set extents to that selection
1948
1949         if ( !selection->regions.empty() ) {
1950                 RegionSelection rs = get_regions_from_selection_and_entered ();
1951
1952                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
1953
1954                         if ((*i)->region()->position() < start) {
1955                                 start = (*i)->region()->position();
1956                         }
1957
1958                         if ((*i)->region()->last_frame() + 1 > end) {
1959                                 end = (*i)->region()->last_frame() + 1;
1960                         }
1961                 }
1962
1963         } else if (!selection->time.empty()) {
1964                 start = selection->time.start();
1965                 end = selection->time.end_frame();
1966         } else
1967                 ret = false;  //no selection found
1968
1969         //range check
1970         if ((start == 0 && end == 0) || end < start) {
1971                 ret = false;
1972         }
1973
1974         return ret;
1975 }
1976
1977
1978 void
1979 Editor::temporal_zoom_selection (Editing::ZoomAxis axes)
1980 {
1981         if (!selection) return;
1982
1983         //ToDo:  if notes are selected, zoom to that
1984
1985         //ToDo:  if control points are selected, zoom to that
1986
1987         if (axes == Horizontal || axes == Both) {
1988
1989                 framepos_t start, end;
1990                 if (get_selection_extents (start, end)) {
1991                         calc_extra_zoom_edges (start, end);
1992                         temporal_zoom_by_frame (start, end);
1993                 }
1994         }
1995
1996         if (axes == Vertical || axes == Both) {
1997                 fit_selection ();
1998         }
1999 }
2000
2001 void
2002 Editor::temporal_zoom_session ()
2003 {
2004         ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_session)
2005
2006         if (_session) {
2007                 framecnt_t start = _session->current_start_frame();
2008                 framecnt_t end = _session->current_end_frame();
2009
2010                 if (_session->actively_recording () ) {
2011                         framepos_t cur = playhead_cursor->current_frame ();
2012                         if (cur > end) {
2013                                 /* recording beyond the end marker; zoom out
2014                                  * by 5 seconds more so that if 'follow
2015                                  * playhead' is active we don't immediately
2016                                  * scroll.
2017                                  */
2018                                 end = cur + _session->frame_rate() * 5;
2019                         }
2020                 }
2021
2022                 if ((start == 0 && end == 0) || end < start) {
2023                         return;
2024                 }
2025
2026                 calc_extra_zoom_edges(start, end);
2027
2028                 temporal_zoom_by_frame (start, end);
2029         }
2030 }
2031
2032 void
2033 Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
2034 {
2035         if (!_session) return;
2036
2037         if ((start == 0 && end == 0) || end < start) {
2038                 return;
2039         }
2040
2041         framepos_t range = end - start;
2042
2043         const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
2044
2045         framepos_t new_page = range;
2046         framepos_t middle = (framepos_t) floor ((double) start + ((double) range / 2.0f));
2047         framepos_t new_leftmost = (framepos_t) floor ((double) middle - ((double) new_page / 2.0f));
2048
2049         if (new_leftmost > middle) {
2050                 new_leftmost = 0;
2051         }
2052
2053         if (new_leftmost < 0) {
2054                 new_leftmost = 0;
2055         }
2056
2057         reposition_and_zoom (new_leftmost, new_fpp);
2058 }
2059
2060 void
2061 Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
2062 {
2063         if (!_session) {
2064                 return;
2065         }
2066
2067         framecnt_t range_before = frame - leftmost_frame;
2068         framecnt_t new_spp;
2069
2070         if (coarser) {
2071                 if (samples_per_pixel <= 1) {
2072                         new_spp = 2;
2073                 } else {
2074                         new_spp = samples_per_pixel + (samples_per_pixel/2);
2075                 }
2076                 range_before += range_before/2;
2077         } else {
2078                 if (samples_per_pixel >= 1) {
2079                         new_spp = samples_per_pixel - (samples_per_pixel/2);
2080                 } else {
2081                         /* could bail out here since we cannot zoom any finer,
2082                            but leave that to the equality test below
2083                         */
2084                         new_spp = samples_per_pixel;
2085                 }
2086
2087                 range_before -= range_before/2;
2088         }
2089
2090         if (new_spp == samples_per_pixel)  {
2091                 return;
2092         }
2093
2094         /* zoom focus is automatically taken as @param frame when this
2095            method is used.
2096         */
2097
2098         framepos_t new_leftmost = frame - (framepos_t)range_before;
2099
2100         if (new_leftmost > frame) {
2101                 new_leftmost = 0;
2102         }
2103
2104         if (new_leftmost < 0) {
2105                 new_leftmost = 0;
2106         }
2107
2108         reposition_and_zoom (new_leftmost, new_spp);
2109 }
2110
2111
2112 bool
2113 Editor::choose_new_marker_name(string &name) {
2114
2115         if (!UIConfiguration::instance().get_name_new_markers()) {
2116                 /* don't prompt user for a new name */
2117                 return true;
2118         }
2119
2120         ArdourPrompter dialog (true);
2121
2122         dialog.set_prompt (_("New Name:"));
2123
2124         dialog.set_title (_("New Location Marker"));
2125
2126         dialog.set_name ("MarkNameWindow");
2127         dialog.set_size_request (250, -1);
2128         dialog.set_position (Gtk::WIN_POS_MOUSE);
2129
2130         dialog.add_button (Stock::OK, RESPONSE_ACCEPT);
2131         dialog.set_initial_text (name);
2132
2133         dialog.show ();
2134
2135         switch (dialog.run ()) {
2136         case RESPONSE_ACCEPT:
2137                 break;
2138         default:
2139                 return false;
2140         }
2141
2142         dialog.get_result(name);
2143         return true;
2144
2145 }
2146
2147
2148 void
2149 Editor::add_location_from_selection ()
2150 {
2151         string rangename;
2152
2153         if (selection->time.empty()) {
2154                 return;
2155         }
2156
2157         if (_session == 0 || clicked_axisview == 0) {
2158                 return;
2159         }
2160
2161         framepos_t start = selection->time[clicked_selection].start;
2162         framepos_t end = selection->time[clicked_selection].end;
2163
2164         _session->locations()->next_available_name(rangename,"selection");
2165         Location *location = new Location (*_session, start, end, rangename, Location::IsRangeMarker, get_grid_music_divisions(0));
2166
2167         begin_reversible_command (_("add marker"));
2168
2169         XMLNode &before = _session->locations()->get_state();
2170         _session->locations()->add (location, true);
2171         XMLNode &after = _session->locations()->get_state();
2172         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2173
2174         commit_reversible_command ();
2175 }
2176
2177 void
2178 Editor::add_location_mark (framepos_t where)
2179 {
2180         string markername;
2181
2182         select_new_marker = true;
2183
2184         _session->locations()->next_available_name(markername,"mark");
2185         if (!choose_new_marker_name(markername)) {
2186                 return;
2187         }
2188         Location *location = new Location (*_session, where, where, markername, Location::IsMark, get_grid_music_divisions (0));
2189         begin_reversible_command (_("add marker"));
2190
2191         XMLNode &before = _session->locations()->get_state();
2192         _session->locations()->add (location, true);
2193         XMLNode &after = _session->locations()->get_state();
2194         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2195
2196         commit_reversible_command ();
2197 }
2198
2199 void
2200 Editor::set_session_start_from_playhead ()
2201 {
2202         if (!_session)
2203                 return;
2204
2205         Location* loc;
2206         if ((loc = _session->locations()->session_range_location()) == 0) {  //should never happen
2207                 _session->set_session_extents ( _session->audible_frame(), _session->audible_frame() );
2208         } else {
2209                 XMLNode &before = loc->get_state();
2210
2211                 _session->set_session_extents ( _session->audible_frame(), loc->end() );
2212
2213                 XMLNode &after = loc->get_state();
2214
2215                 begin_reversible_command (_("Set session start"));
2216
2217                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
2218
2219                 commit_reversible_command ();
2220         }
2221 }
2222
2223 void
2224 Editor::set_session_end_from_playhead ()
2225 {
2226         if (!_session)
2227                 return;
2228
2229         Location* loc;
2230         if ((loc = _session->locations()->session_range_location()) == 0) {  //should never happen
2231                 _session->set_session_extents ( _session->audible_frame(), _session->audible_frame() );
2232         } else {
2233                 XMLNode &before = loc->get_state();
2234
2235                 _session->set_session_extents ( loc->start(), _session->audible_frame() );
2236
2237                 XMLNode &after = loc->get_state();
2238
2239                 begin_reversible_command (_("Set session start"));
2240
2241                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
2242
2243                 commit_reversible_command ();
2244         }
2245
2246         _session->set_end_is_free (false);
2247 }
2248
2249
2250 void
2251 Editor::toggle_location_at_playhead_cursor ()
2252 {
2253         if (!do_remove_location_at_playhead_cursor())
2254         {
2255                 add_location_from_playhead_cursor();
2256         }
2257 }
2258
2259 void
2260 Editor::add_location_from_playhead_cursor ()
2261 {
2262         add_location_mark (_session->audible_frame());
2263 }
2264
2265 bool
2266 Editor::do_remove_location_at_playhead_cursor ()
2267 {
2268         bool removed = false;
2269         if (_session) {
2270                 //set up for undo
2271                 XMLNode &before = _session->locations()->get_state();
2272
2273                 //find location(s) at this time
2274                 Locations::LocationList locs;
2275                 _session->locations()->find_all_between (_session->audible_frame(), _session->audible_frame()+1, locs, Location::Flags(0));
2276                 for (Locations::LocationList::iterator i = locs.begin(); i != locs.end(); ++i) {
2277                         if ((*i)->is_mark()) {
2278                                 _session->locations()->remove (*i);
2279                                 removed = true;
2280                         }
2281                 }
2282
2283                 //store undo
2284                 if (removed) {
2285                         begin_reversible_command (_("remove marker"));
2286                         XMLNode &after = _session->locations()->get_state();
2287                         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2288                         commit_reversible_command ();
2289                 }
2290         }
2291         return removed;
2292 }
2293
2294 void
2295 Editor::remove_location_at_playhead_cursor ()
2296 {
2297         do_remove_location_at_playhead_cursor ();
2298 }
2299
2300 /** Add a range marker around each selected region */
2301 void
2302 Editor::add_locations_from_region ()
2303 {
2304         RegionSelection rs = get_regions_from_selection_and_entered ();
2305
2306         if (rs.empty()) {
2307                 return;
2308         }
2309         bool commit = false;
2310
2311         XMLNode &before = _session->locations()->get_state();
2312
2313         for (RegionSelection::iterator i = rs.begin (); i != rs.end (); ++i) {
2314
2315                 boost::shared_ptr<Region> region = (*i)->region ();
2316
2317                 Location *location = new Location (*_session, region->position(), region->last_frame(), region->name(), Location::IsRangeMarker, 0);
2318
2319                 _session->locations()->add (location, true);
2320                 commit = true;
2321         }
2322
2323         if (commit) {
2324                 begin_reversible_command (selection->regions.size () > 1 ? _("add markers") : _("add marker"));
2325                 XMLNode &after = _session->locations()->get_state();
2326                 _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2327                 commit_reversible_command ();
2328         }
2329 }
2330
2331 /** Add a single range marker around all selected regions */
2332 void
2333 Editor::add_location_from_region ()
2334 {
2335         RegionSelection rs = get_regions_from_selection_and_entered ();
2336
2337         if (rs.empty()) {
2338                 return;
2339         }
2340
2341         XMLNode &before = _session->locations()->get_state();
2342
2343         string markername;
2344
2345         if (rs.size() > 1) {
2346                 _session->locations()->next_available_name(markername, "regions");
2347         } else {
2348                 RegionView* rv = *(rs.begin());
2349                 boost::shared_ptr<Region> region = rv->region();
2350                 markername = region->name();
2351         }
2352
2353         if (!choose_new_marker_name(markername)) {
2354                 return;
2355         }
2356
2357         // single range spanning all selected
2358         Location *location = new Location (*_session, selection->regions.start(), selection->regions.end_frame(), markername, Location::IsRangeMarker, 0);
2359         _session->locations()->add (location, true);
2360
2361         begin_reversible_command (_("add marker"));
2362         XMLNode &after = _session->locations()->get_state();
2363         _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2364         commit_reversible_command ();
2365 }
2366
2367 /* MARKS */
2368
2369 void
2370 Editor::jump_forward_to_mark ()
2371 {
2372         if (!_session) {
2373                 return;
2374         }
2375
2376         framepos_t pos = _session->locations()->first_mark_after (playhead_cursor->current_frame());
2377
2378         if (pos < 0) {
2379                 return;
2380         }
2381
2382         _session->request_locate (pos, _session->transport_rolling());
2383 }
2384
2385 void
2386 Editor::jump_backward_to_mark ()
2387 {
2388         if (!_session) {
2389                 return;
2390         }
2391
2392         framepos_t pos = _session->locations()->first_mark_before (playhead_cursor->current_frame());
2393
2394         //handle the case where we are rolling, and we're less than one-half second past the mark, we want to go to the prior mark...
2395         if ( _session->transport_rolling() ) {
2396                 if ( (playhead_cursor->current_frame() - pos) < _session->frame_rate()/2 ) {
2397                         framepos_t prior = _session->locations()->first_mark_before ( pos );
2398                         pos = prior;
2399                 }
2400         }
2401
2402         if (pos < 0) {
2403                 return;
2404         }
2405
2406         _session->request_locate (pos, _session->transport_rolling());
2407 }
2408
2409 void
2410 Editor::set_mark ()
2411 {
2412         framepos_t const pos = _session->audible_frame ();
2413
2414         string markername;
2415         _session->locations()->next_available_name (markername, "mark");
2416
2417         if (!choose_new_marker_name (markername)) {
2418                 return;
2419         }
2420
2421         _session->locations()->add (new Location (*_session, pos, 0, markername, Location::IsMark, 0), true);
2422 }
2423
2424 void
2425 Editor::clear_markers ()
2426 {
2427         if (_session) {
2428                 begin_reversible_command (_("clear markers"));
2429
2430                 XMLNode &before = _session->locations()->get_state();
2431                 _session->locations()->clear_markers ();
2432                 XMLNode &after = _session->locations()->get_state();
2433                 _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2434
2435                 commit_reversible_command ();
2436         }
2437 }
2438
2439 void
2440 Editor::clear_ranges ()
2441 {
2442         if (_session) {
2443                 begin_reversible_command (_("clear ranges"));
2444
2445                 XMLNode &before = _session->locations()->get_state();
2446
2447                 _session->locations()->clear_ranges ();
2448
2449                 XMLNode &after = _session->locations()->get_state();
2450                 _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2451
2452                 commit_reversible_command ();
2453         }
2454 }
2455
2456 void
2457 Editor::clear_locations ()
2458 {
2459         begin_reversible_command (_("clear locations"));
2460
2461         XMLNode &before = _session->locations()->get_state();
2462         _session->locations()->clear ();
2463         XMLNode &after = _session->locations()->get_state();
2464         _session->add_command(new MementoCommand<Locations>(*(_session->locations()), &before, &after));
2465
2466         commit_reversible_command ();
2467 }
2468
2469 void
2470 Editor::unhide_markers ()
2471 {
2472         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2473                 Location *l = (*i).first;
2474                 if (l->is_hidden() && l->is_mark()) {
2475                         l->set_hidden(false, this);
2476                 }
2477         }
2478 }
2479
2480 void
2481 Editor::unhide_ranges ()
2482 {
2483         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2484                 Location *l = (*i).first;
2485                 if (l->is_hidden() && l->is_range_marker()) {
2486                         l->set_hidden(false, this);
2487                 }
2488         }
2489 }
2490
2491 /* INSERT/REPLACE */
2492
2493 void
2494 Editor::insert_region_list_selection (float times)
2495 {
2496         RouteTimeAxisView *tv = 0;
2497         boost::shared_ptr<Playlist> playlist;
2498
2499         if (clicked_routeview != 0) {
2500                 tv = clicked_routeview;
2501         } else if (!selection->tracks.empty()) {
2502                 if ((tv = dynamic_cast<RouteTimeAxisView*>(selection->tracks.front())) == 0) {
2503                         return;
2504                 }
2505         } else if (entered_track != 0) {
2506                 if ((tv = dynamic_cast<RouteTimeAxisView*>(entered_track)) == 0) {
2507                         return;
2508                 }
2509         } else {
2510                 return;
2511         }
2512
2513         if ((playlist = tv->playlist()) == 0) {
2514                 return;
2515         }
2516
2517         boost::shared_ptr<Region> region = _regions->get_single_selection ();
2518         if (region == 0) {
2519                 return;
2520         }
2521
2522         begin_reversible_command (_("insert region"));
2523         playlist->clear_changes ();
2524         playlist->add_region ((RegionFactory::create (region, true)), get_preferred_edit_position(), times);
2525         if (Config->get_edit_mode() == Ripple)
2526                 playlist->ripple (get_preferred_edit_position(), region->length() * times, boost::shared_ptr<Region>());
2527
2528         _session->add_command(new StatefulDiffCommand (playlist));
2529         commit_reversible_command ();
2530 }
2531
2532 /* BUILT-IN EFFECTS */
2533
2534 void
2535 Editor::reverse_selection ()
2536 {
2537
2538 }
2539
2540 /* GAIN ENVELOPE EDITING */
2541
2542 void
2543 Editor::edit_envelope ()
2544 {
2545 }
2546
2547 /* PLAYBACK */
2548
2549 void
2550 Editor::transition_to_rolling (bool fwd)
2551 {
2552         if (!_session) {
2553                 return;
2554         }
2555
2556         if (_session->config.get_external_sync()) {
2557                 switch (Config->get_sync_source()) {
2558                 case Engine:
2559                         break;
2560                 default:
2561                         /* transport controlled by the master */
2562                         return;
2563                 }
2564         }
2565
2566         if (_session->is_auditioning()) {
2567                 _session->cancel_audition ();
2568                 return;
2569         }
2570
2571         _session->request_transport_speed (fwd ? 1.0f : -1.0f);
2572 }
2573
2574 void
2575 Editor::play_from_start ()
2576 {
2577         _session->request_locate (_session->current_start_frame(), true);
2578 }
2579
2580 void
2581 Editor::play_from_edit_point ()
2582 {
2583         _session->request_locate (get_preferred_edit_position(), true);
2584 }
2585
2586 void
2587 Editor::play_from_edit_point_and_return ()
2588 {
2589         framepos_t start_frame;
2590         framepos_t return_frame;
2591
2592         start_frame = get_preferred_edit_position ( EDIT_IGNORE_PHEAD );
2593
2594         if (_session->transport_rolling()) {
2595                 _session->request_locate (start_frame, false);
2596                 return;
2597         }
2598
2599         /* don't reset the return frame if its already set */
2600
2601         if ((return_frame = _session->requested_return_frame()) < 0) {
2602                 return_frame = _session->audible_frame();
2603         }
2604
2605         if (start_frame >= 0) {
2606                 _session->request_roll_at_and_return (start_frame, return_frame);
2607         }
2608 }
2609
2610 void
2611 Editor::play_selection ()
2612 {
2613         framepos_t start, end;
2614         if (!get_selection_extents ( start, end))
2615                 return;
2616
2617         AudioRange ar (start, end, 0);
2618         list<AudioRange> lar;
2619         lar.push_back (ar);
2620
2621         _session->request_play_range (&lar, true);
2622 }
2623
2624
2625 void
2626 Editor::maybe_locate_with_edit_preroll (framepos_t location)
2627 {
2628         if ( _session->transport_rolling() || !UIConfiguration::instance().get_follow_edits() || _session->config.get_external_sync() )
2629                 return;
2630
2631         location -= _session->preroll_samples (location);
2632
2633         //don't try to locate before the beginning of time
2634         if (location < 0) {
2635                 location = 0;
2636         }
2637
2638         //if follow_playhead is on, keep the playhead on the screen
2639         if ( _follow_playhead )
2640                 if ( location < leftmost_frame )
2641                         location = leftmost_frame;
2642
2643         _session->request_locate( location );
2644 }
2645
2646 void
2647 Editor::play_with_preroll ()
2648 {
2649         framepos_t start, end;
2650         if ( UIConfiguration::instance().get_follow_edits() && get_selection_extents ( start, end) ) {
2651                 const framepos_t preroll = _session->preroll_samples (start);
2652
2653                 framepos_t ret = start;
2654
2655                 if (start > preroll) {
2656                         start = start - preroll;
2657                 }
2658
2659                 end = end + preroll;  //"post-roll"
2660
2661                 AudioRange ar (start, end, 0);
2662                 list<AudioRange> lar;
2663                 lar.push_back (ar);
2664
2665                 _session->request_play_range (&lar, true);
2666                 _session->set_requested_return_frame (ret);  //force auto-return to return to range start, without the preroll
2667         } else {
2668                 framepos_t ph = playhead_cursor->current_frame ();
2669                 const framepos_t preroll = _session->preroll_samples (ph);
2670                 framepos_t start;
2671                 if (ph > preroll) {
2672                         start = ph - preroll;
2673                 } else {
2674                         start = 0;
2675                 }
2676                 _session->request_locate (start, true);
2677                 _session->set_requested_return_frame (ph);  //force auto-return to return to playhead location, without the preroll
2678         }
2679 }
2680
2681 void
2682 Editor::rec_with_preroll ()
2683 {
2684         framepos_t ph = playhead_cursor->current_frame ();
2685         framepos_t preroll = _session->preroll_samples (ph);
2686         _session->request_preroll_record_trim (ph, preroll);
2687 }
2688
2689 void
2690 Editor::rec_with_count_in ()
2691 {
2692         _session->request_count_in_record ();
2693 }
2694
2695 void
2696 Editor::play_location (Location& location)
2697 {
2698         if (location.start() <= location.end()) {
2699                 return;
2700         }
2701
2702         _session->request_bounded_roll (location.start(), location.end());
2703 }
2704
2705 void
2706 Editor::loop_location (Location& location)
2707 {
2708         if (location.start() <= location.end()) {
2709                 return;
2710         }
2711
2712         Location* tll;
2713
2714         if ((tll = transport_loop_location()) != 0) {
2715                 tll->set (location.start(), location.end());
2716
2717                 // enable looping, reposition and start rolling
2718                 _session->request_locate (tll->start(), true);
2719                 _session->request_play_loop (true);
2720         }
2721 }
2722
2723 void
2724 Editor::do_layer_operation (LayerOperation op)
2725 {
2726         if (selection->regions.empty ()) {
2727                 return;
2728         }
2729
2730         bool const multiple = selection->regions.size() > 1;
2731         switch (op) {
2732         case Raise:
2733                 if (multiple) {
2734                         begin_reversible_command (_("raise regions"));
2735                 } else {
2736                         begin_reversible_command (_("raise region"));
2737                 }
2738                 break;
2739
2740         case RaiseToTop:
2741                 if (multiple) {
2742                         begin_reversible_command (_("raise regions to top"));
2743                 } else {
2744                         begin_reversible_command (_("raise region to top"));
2745                 }
2746                 break;
2747
2748         case Lower:
2749                 if (multiple) {
2750                         begin_reversible_command (_("lower regions"));
2751                 } else {
2752                         begin_reversible_command (_("lower region"));
2753                 }
2754                 break;
2755
2756         case LowerToBottom:
2757                 if (multiple) {
2758                         begin_reversible_command (_("lower regions to bottom"));
2759                 } else {
2760                         begin_reversible_command (_("lower region"));
2761                 }
2762                 break;
2763         }
2764
2765         set<boost::shared_ptr<Playlist> > playlists = selection->regions.playlists ();
2766         for (set<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
2767                 (*i)->clear_owned_changes ();
2768         }
2769
2770         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
2771                 boost::shared_ptr<Region> r = (*i)->region ();
2772                 switch (op) {
2773                 case Raise:
2774                         r->raise ();
2775                         break;
2776                 case RaiseToTop:
2777                         r->raise_to_top ();
2778                         break;
2779                 case Lower:
2780                         r->lower ();
2781                         break;
2782                 case LowerToBottom:
2783                         r->lower_to_bottom ();
2784                 }
2785         }
2786
2787         for (set<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
2788                 vector<Command*> cmds;
2789                 (*i)->rdiff (cmds);
2790                 _session->add_commands (cmds);
2791         }
2792
2793         commit_reversible_command ();
2794 }
2795
2796 void
2797 Editor::raise_region ()
2798 {
2799         do_layer_operation (Raise);
2800 }
2801
2802 void
2803 Editor::raise_region_to_top ()
2804 {
2805         do_layer_operation (RaiseToTop);
2806 }
2807
2808 void
2809 Editor::lower_region ()
2810 {
2811         do_layer_operation (Lower);
2812 }
2813
2814 void
2815 Editor::lower_region_to_bottom ()
2816 {
2817         do_layer_operation (LowerToBottom);
2818 }
2819
2820 /** Show the region editor for the selected regions */
2821 void
2822 Editor::show_region_properties ()
2823 {
2824         selection->foreach_regionview (&RegionView::show_region_editor);
2825 }
2826
2827 /** Show the midi list editor for the selected MIDI regions */
2828 void
2829 Editor::show_midi_list_editor ()
2830 {
2831         selection->foreach_midi_regionview (&MidiRegionView::show_list_editor);
2832 }
2833
2834 void
2835 Editor::rename_region ()
2836 {
2837         RegionSelection rs = get_regions_from_selection_and_entered ();
2838
2839         if (rs.empty()) {
2840                 return;
2841         }
2842
2843         ArdourDialog d (_("Rename Region"), true, false);
2844         Entry entry;
2845         Label label (_("New name:"));
2846         HBox hbox;
2847
2848         hbox.set_spacing (6);
2849         hbox.pack_start (label, false, false);
2850         hbox.pack_start (entry, true, true);
2851
2852         d.get_vbox()->set_border_width (12);
2853         d.get_vbox()->pack_start (hbox, false, false);
2854
2855         d.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
2856         d.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
2857
2858         d.set_size_request (300, -1);
2859
2860         entry.set_text (rs.front()->region()->name());
2861         entry.select_region (0, -1);
2862
2863         entry.signal_activate().connect (sigc::bind (sigc::mem_fun (d, &Dialog::response), RESPONSE_OK));
2864
2865         d.show_all ();
2866
2867         entry.grab_focus();
2868
2869         int const ret = d.run();
2870
2871         d.hide ();
2872
2873         if (ret != RESPONSE_OK) {
2874                 return;
2875         }
2876
2877         std::string str = entry.get_text();
2878         strip_whitespace_edges (str);
2879         if (!str.empty()) {
2880                 rs.front()->region()->set_name (str);
2881                 _regions->redisplay ();
2882         }
2883 }
2884
2885 /** Start an audition of the first selected region */
2886 void
2887 Editor::play_edit_range ()
2888 {
2889         framepos_t start, end;
2890
2891         if (get_edit_op_range (start, end)) {
2892                 _session->request_bounded_roll (start, end);
2893         }
2894 }
2895
2896 void
2897 Editor::play_selected_region ()
2898 {
2899         framepos_t start = max_framepos;
2900         framepos_t end = 0;
2901
2902         RegionSelection rs = get_regions_from_selection_and_entered ();
2903
2904         if (rs.empty()) {
2905                 return;
2906         }
2907
2908         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2909                 if ((*i)->region()->position() < start) {
2910                         start = (*i)->region()->position();
2911                 }
2912                 if ((*i)->region()->last_frame() + 1 > end) {
2913                         end = (*i)->region()->last_frame() + 1;
2914                 }
2915         }
2916
2917         _session->request_bounded_roll (start, end);
2918 }
2919
2920 void
2921 Editor::audition_playlist_region_standalone (boost::shared_ptr<Region> region)
2922 {
2923         _session->audition_region (region);
2924 }
2925
2926 void
2927 Editor::region_from_selection ()
2928 {
2929         if (clicked_axisview == 0) {
2930                 return;
2931         }
2932
2933         if (selection->time.empty()) {
2934                 return;
2935         }
2936
2937         framepos_t start = selection->time[clicked_selection].start;
2938         framepos_t end = selection->time[clicked_selection].end;
2939
2940         TrackViewList tracks = get_tracks_for_range_action ();
2941
2942         framepos_t selection_cnt = end - start + 1;
2943
2944         for (TrackSelection::iterator i = tracks.begin(); i != tracks.end(); ++i) {
2945                 boost::shared_ptr<Region> current;
2946                 boost::shared_ptr<Playlist> pl;
2947                 framepos_t internal_start;
2948                 string new_name;
2949
2950                 if ((pl = (*i)->playlist()) == 0) {
2951                         continue;
2952                 }
2953
2954                 if ((current = pl->top_region_at (start)) == 0) {
2955                         continue;
2956                 }
2957
2958                 internal_start = start - current->position();
2959                 RegionFactory::region_name (new_name, current->name(), true);
2960
2961                 PropertyList plist;
2962
2963                 plist.add (ARDOUR::Properties::start, current->start() + internal_start);
2964                 plist.add (ARDOUR::Properties::length, selection_cnt);
2965                 plist.add (ARDOUR::Properties::name, new_name);
2966                 plist.add (ARDOUR::Properties::layer, 0);
2967
2968                 boost::shared_ptr<Region> region (RegionFactory::create (current, plist));
2969         }
2970 }
2971
2972 void
2973 Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_regions)
2974 {
2975         if (selection->time.empty() || selection->tracks.empty()) {
2976                 return;
2977         }
2978
2979         framepos_t start, end;
2980         if (clicked_selection) {
2981                 start = selection->time[clicked_selection].start;
2982                 end = selection->time[clicked_selection].end;
2983         } else {
2984                 start = selection->time.start();
2985                 end = selection->time.end_frame();
2986         }
2987
2988         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
2989         sort_track_selection (ts);
2990
2991         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
2992                 boost::shared_ptr<Region> current;
2993                 boost::shared_ptr<Playlist> playlist;
2994                 framepos_t internal_start;
2995                 string new_name;
2996
2997                 if ((playlist = (*i)->playlist()) == 0) {
2998                         continue;
2999                 }
3000
3001                 if ((current = playlist->top_region_at(start)) == 0) {
3002                         continue;
3003                 }
3004
3005                 internal_start = start - current->position();
3006                 RegionFactory::region_name (new_name, current->name(), true);
3007
3008                 PropertyList plist;
3009
3010                 plist.add (ARDOUR::Properties::start, current->start() + internal_start);
3011                 plist.add (ARDOUR::Properties::length, end - start + 1);
3012                 plist.add (ARDOUR::Properties::name, new_name);
3013
3014                 new_regions.push_back (RegionFactory::create (current, plist));
3015         }
3016 }
3017
3018 void
3019 Editor::split_multichannel_region ()
3020 {
3021         RegionSelection rs = get_regions_from_selection_and_entered ();
3022
3023         if (rs.empty()) {
3024                 return;
3025         }
3026
3027         vector< boost::shared_ptr<Region> > v;
3028
3029         for (list<RegionView*>::iterator x = rs.begin(); x != rs.end(); ++x) {
3030                 (*x)->region()->separate_by_channel (*_session, v);
3031         }
3032 }
3033
3034 void
3035 Editor::new_region_from_selection ()
3036 {
3037         region_from_selection ();
3038         cancel_selection ();
3039 }
3040
3041 static void
3042 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
3043 {
3044         switch (rv->region()->coverage (ar->start, ar->end - 1)) {
3045         // n.b. -1 because AudioRange::end is one past the end, but coverage expects inclusive ranges
3046         case Evoral::OverlapNone:
3047                 break;
3048         default:
3049                 rs->push_back (rv);
3050         }
3051 }
3052
3053 /** Return either:
3054  *    - selected tracks, or if there are none...
3055  *    - tracks containing selected regions, or if there are none...
3056  *    - all tracks
3057  * @return tracks.
3058  */
3059 TrackViewList
3060 Editor::get_tracks_for_range_action () const
3061 {
3062         TrackViewList t;
3063
3064         if (selection->tracks.empty()) {
3065
3066                 /* use tracks with selected regions */
3067
3068                 RegionSelection rs = selection->regions;
3069
3070                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3071                         TimeAxisView* tv = &(*i)->get_time_axis_view();
3072
3073                         if (!t.contains (tv)) {
3074                                 t.push_back (tv);
3075                         }
3076                 }
3077
3078                 if (t.empty()) {
3079                         /* no regions and no tracks: use all tracks */
3080                         t = track_views;
3081                 }
3082
3083         } else {
3084
3085                 t = selection->tracks;
3086         }
3087
3088         return t.filter_to_unique_playlists();
3089 }
3090
3091 void
3092 Editor::separate_regions_between (const TimeSelection& ts)
3093 {
3094         bool in_command = false;
3095         boost::shared_ptr<Playlist> playlist;
3096         RegionSelection new_selection;
3097
3098         TrackViewList tmptracks = get_tracks_for_range_action ();
3099         sort_track_selection (tmptracks);
3100
3101         for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
3102
3103                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> ((*i));
3104
3105                 if (!rtv) {
3106                         continue;
3107                 }
3108
3109                 if (!rtv->is_track()) {
3110                         continue;
3111                 }
3112
3113                 /* no edits to destructive tracks */
3114
3115                 if (rtv->track()->destructive()) {
3116                         continue;
3117                 }
3118
3119                 if ((playlist = rtv->playlist()) != 0) {
3120
3121                         playlist->clear_changes ();
3122
3123                         /* XXX need to consider musical time selections here at some point */
3124
3125                         double speed = rtv->track()->speed();
3126
3127                         for (list<AudioRange>::const_iterator t = ts.begin(); t != ts.end(); ++t) {
3128
3129                                 sigc::connection c = rtv->view()->RegionViewAdded.connect (
3130                                         sigc::mem_fun(*this, &Editor::collect_new_region_view));
3131
3132                                 latest_regionviews.clear ();
3133
3134                                 playlist->partition ((framepos_t)((*t).start * speed),
3135                                                      (framepos_t)((*t).end * speed), false);
3136
3137                                 c.disconnect ();
3138
3139                                 if (!latest_regionviews.empty()) {
3140
3141                                         rtv->view()->foreach_regionview (sigc::bind (
3142                                                                                  sigc::ptr_fun (add_if_covered),
3143                                                                                  &(*t), &new_selection));
3144
3145                                         if (!in_command) {
3146                                                 begin_reversible_command (_("separate"));
3147                                                 in_command = true;
3148                                         }
3149
3150                                         /* pick up changes to existing regions */
3151
3152                                         vector<Command*> cmds;
3153                                         playlist->rdiff (cmds);
3154                                         _session->add_commands (cmds);
3155
3156                                         /* pick up changes to the playlist itself (adds/removes)
3157                                          */
3158
3159                                         _session->add_command(new StatefulDiffCommand (playlist));
3160                                 }
3161                         }
3162                 }
3163         }
3164
3165         if (in_command) {
3166 //              selection->set (new_selection);
3167
3168                 commit_reversible_command ();
3169         }
3170 }
3171
3172 struct PlaylistState {
3173     boost::shared_ptr<Playlist> playlist;
3174     XMLNode*  before;
3175 };
3176
3177 /** Take tracks from get_tracks_for_range_action and cut any regions
3178  *  on those tracks so that the tracks are empty over the time
3179  *  selection.
3180  */
3181 void
3182 Editor::separate_region_from_selection ()
3183 {
3184         /* preferentially use *all* ranges in the time selection if we're in range mode
3185            to allow discontiguous operation, since get_edit_op_range() currently
3186            returns a single range.
3187         */
3188
3189         if (!selection->time.empty()) {
3190
3191                 separate_regions_between (selection->time);
3192
3193         } else {
3194
3195                 framepos_t start;
3196                 framepos_t end;
3197
3198                 if (get_edit_op_range (start, end)) {
3199
3200                         AudioRange ar (start, end, 1);
3201                         TimeSelection ts;
3202                         ts.push_back (ar);
3203
3204                         separate_regions_between (ts);
3205                 }
3206         }
3207 }
3208
3209 void
3210 Editor::separate_region_from_punch ()
3211 {
3212         Location* loc  = _session->locations()->auto_punch_location();
3213         if (loc) {
3214                 separate_regions_using_location (*loc);
3215         }
3216 }
3217
3218 void
3219 Editor::separate_region_from_loop ()
3220 {
3221         Location* loc  = _session->locations()->auto_loop_location();
3222         if (loc) {
3223                 separate_regions_using_location (*loc);
3224         }
3225 }
3226
3227 void
3228 Editor::separate_regions_using_location (Location& loc)
3229 {
3230         if (loc.is_mark()) {
3231                 return;
3232         }
3233
3234         AudioRange ar (loc.start(), loc.end(), 1);
3235         TimeSelection ts;
3236
3237         ts.push_back (ar);
3238
3239         separate_regions_between (ts);
3240 }
3241
3242 /** Separate regions under the selected region */
3243 void
3244 Editor::separate_under_selected_regions ()
3245 {
3246         vector<PlaylistState> playlists;
3247
3248         RegionSelection rs;
3249
3250         rs = get_regions_from_selection_and_entered();
3251
3252         if (!_session || rs.empty()) {
3253                 return;
3254         }
3255
3256         begin_reversible_command (_("separate region under"));
3257
3258         list<boost::shared_ptr<Region> > regions_to_remove;
3259
3260         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3261                 // we can't just remove the region(s) in this loop because
3262                 // this removes them from the RegionSelection, and they thus
3263                 // disappear from underneath the iterator, and the ++i above
3264                 // SEGVs in a puzzling fashion.
3265
3266                 // so, first iterate over the regions to be removed from rs and
3267                 // add them to the regions_to_remove list, and then
3268                 // iterate over the list to actually remove them.
3269
3270                 regions_to_remove.push_back ((*i)->region());
3271         }
3272
3273         for (list<boost::shared_ptr<Region> >::iterator rl = regions_to_remove.begin(); rl != regions_to_remove.end(); ++rl) {
3274
3275                 boost::shared_ptr<Playlist> playlist = (*rl)->playlist();
3276
3277                 if (!playlist) {
3278                         // is this check necessary?
3279                         continue;
3280                 }
3281
3282                 vector<PlaylistState>::iterator i;
3283
3284                 //only take state if this is a new playlist.
3285                 for (i = playlists.begin(); i != playlists.end(); ++i) {
3286                         if ((*i).playlist == playlist) {
3287                                 break;
3288                         }
3289                 }
3290
3291                 if (i == playlists.end()) {
3292
3293                         PlaylistState before;
3294                         before.playlist = playlist;
3295                         before.before = &playlist->get_state();
3296
3297                         playlist->freeze ();
3298                         playlists.push_back(before);
3299                 }
3300
3301                 //Partition on the region bounds
3302                 playlist->partition ((*rl)->first_frame() - 1, (*rl)->last_frame() + 1, true);
3303
3304                 //Re-add region that was just removed due to the partition operation
3305                 playlist->add_region( (*rl), (*rl)->first_frame() );
3306         }
3307
3308         vector<PlaylistState>::iterator pl;
3309
3310         for (pl = playlists.begin(); pl != playlists.end(); ++pl) {
3311                 (*pl).playlist->thaw ();
3312                 _session->add_command(new MementoCommand<Playlist>(*(*pl).playlist, (*pl).before, &(*pl).playlist->get_state()));
3313         }
3314
3315         commit_reversible_command ();
3316 }
3317
3318 void
3319 Editor::crop_region_to_selection ()
3320 {
3321         if (!selection->time.empty()) {
3322
3323                 crop_region_to (selection->time.start(), selection->time.end_frame());
3324
3325         } else {
3326
3327                 framepos_t start;
3328                 framepos_t end;
3329
3330                 if (get_edit_op_range (start, end)) {
3331                         crop_region_to (start, end);
3332                 }
3333         }
3334
3335 }
3336
3337 void
3338 Editor::crop_region_to (framepos_t start, framepos_t end)
3339 {
3340         vector<boost::shared_ptr<Playlist> > playlists;
3341         boost::shared_ptr<Playlist> playlist;
3342         TrackViewList ts;
3343
3344         if (selection->tracks.empty()) {
3345                 ts = track_views.filter_to_unique_playlists();
3346         } else {
3347                 ts = selection->tracks.filter_to_unique_playlists ();
3348         }
3349
3350         sort_track_selection (ts);
3351
3352         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
3353
3354                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> ((*i));
3355
3356                 if (!rtv) {
3357                         continue;
3358                 }
3359
3360                 boost::shared_ptr<Track> t = rtv->track();
3361
3362                 if (t != 0 && ! t->destructive()) {
3363
3364                         if ((playlist = rtv->playlist()) != 0) {
3365                                 playlists.push_back (playlist);
3366                         }
3367                 }
3368         }
3369
3370         if (playlists.empty()) {
3371                 return;
3372         }
3373
3374         framepos_t pos;
3375         framepos_t new_start;
3376         framepos_t new_end;
3377         framecnt_t new_length;
3378         bool in_command = false;
3379
3380         for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
3381
3382                 /* Only the top regions at start and end have to be cropped */
3383                 boost::shared_ptr<Region> region_at_start = (*i)->top_region_at(start);
3384                 boost::shared_ptr<Region> region_at_end = (*i)->top_region_at(end);
3385
3386                 vector<boost::shared_ptr<Region> > regions;
3387
3388                 if (region_at_start != 0) {
3389                         regions.push_back (region_at_start);
3390                 }
3391                 if (region_at_end != 0) {
3392                         regions.push_back (region_at_end);
3393                 }
3394
3395                 /* now adjust lengths */
3396                 for (vector<boost::shared_ptr<Region> >::iterator i = regions.begin(); i != regions.end(); ++i) {
3397
3398                         pos = (*i)->position();
3399                         new_start = max (start, pos);
3400                         if (max_framepos - pos > (*i)->length()) {
3401                                 new_end = pos + (*i)->length() - 1;
3402                         } else {
3403                                 new_end = max_framepos;
3404                         }
3405                         new_end = min (end, new_end);
3406                         new_length = new_end - new_start + 1;
3407
3408                         if(!in_command) {
3409                                 begin_reversible_command (_("trim to selection"));
3410                                 in_command = true;
3411                         }
3412                         (*i)->clear_changes ();
3413                         (*i)->trim_to (new_start, new_length);
3414                         _session->add_command (new StatefulDiffCommand (*i));
3415                 }
3416         }
3417
3418         if (in_command) {
3419                 commit_reversible_command ();
3420         }
3421 }
3422
3423 void
3424 Editor::region_fill_track ()
3425 {
3426         boost::shared_ptr<Playlist> playlist;
3427         RegionSelection regions = get_regions_from_selection_and_entered ();
3428         RegionSelection foo;
3429
3430         framepos_t const end = _session->current_end_frame ();
3431
3432         if (regions.empty () || regions.end_frame () + 1 >= end) {
3433                 return;
3434         }
3435
3436         framepos_t const start_frame = regions.start ();
3437         framepos_t const end_frame = regions.end_frame ();
3438         framecnt_t const gap = end_frame - start_frame + 1;
3439
3440         begin_reversible_command (Operations::region_fill);
3441
3442         selection->clear_regions ();
3443
3444         for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
3445
3446                 boost::shared_ptr<Region> r ((*i)->region());
3447
3448                 TimeAxisView& tv = (*i)->get_time_axis_view();
3449                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
3450                 latest_regionviews.clear ();
3451                 sigc::connection c = rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view));
3452
3453                 framepos_t const position = end_frame + (r->first_frame() - start_frame + 1);
3454                 playlist = (*i)->region()->playlist();
3455                 playlist->clear_changes ();
3456                 playlist->duplicate_until (r, position, gap, end);
3457                 _session->add_command(new StatefulDiffCommand (playlist));
3458
3459                 c.disconnect ();
3460
3461                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
3462         }
3463
3464         if (!foo.empty()) {
3465                 selection->set (foo);
3466         }
3467
3468         commit_reversible_command ();
3469 }
3470
3471 void
3472 Editor::set_region_sync_position ()
3473 {
3474         set_sync_point (get_preferred_edit_position (), get_regions_from_selection_and_edit_point ());
3475 }
3476
3477 void
3478 Editor::set_sync_point (framepos_t where, const RegionSelection& rs)
3479 {
3480         bool in_command = false;
3481
3482         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ++r) {
3483
3484                 if (!(*r)->region()->covers (where)) {
3485                         continue;
3486                 }
3487
3488                 boost::shared_ptr<Region> region ((*r)->region());
3489
3490                 if (!in_command) {
3491                         begin_reversible_command (_("set sync point"));
3492                         in_command = true;
3493                 }
3494
3495                 region->clear_changes ();
3496                 region->set_sync_position (where);
3497                 _session->add_command(new StatefulDiffCommand (region));
3498         }
3499
3500         if (in_command) {
3501                 commit_reversible_command ();
3502         }
3503 }
3504
3505 /** Remove the sync positions of the selection */
3506 void
3507 Editor::remove_region_sync ()
3508 {
3509         RegionSelection rs = get_regions_from_selection_and_entered ();
3510
3511         if (rs.empty()) {
3512                 return;
3513         }
3514
3515         begin_reversible_command (_("remove region sync"));
3516
3517         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3518
3519                 (*i)->region()->clear_changes ();
3520                 (*i)->region()->clear_sync_position ();
3521                 _session->add_command(new StatefulDiffCommand ((*i)->region()));
3522         }
3523
3524         commit_reversible_command ();
3525 }
3526
3527 void
3528 Editor::naturalize_region ()
3529 {
3530         RegionSelection rs = get_regions_from_selection_and_entered ();
3531
3532         if (rs.empty()) {
3533                 return;
3534         }
3535
3536         if (rs.size() > 1) {
3537                 begin_reversible_command (_("move regions to original position"));
3538         } else {
3539                 begin_reversible_command (_("move region to original position"));
3540         }
3541
3542         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3543                 (*i)->region()->clear_changes ();
3544                 (*i)->region()->move_to_natural_position ();
3545                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
3546         }
3547
3548         commit_reversible_command ();
3549 }
3550
3551 void
3552 Editor::align_regions (RegionPoint what)
3553 {
3554         RegionSelection const rs = get_regions_from_selection_and_edit_point ();
3555
3556         if (rs.empty()) {
3557                 return;
3558         }
3559
3560         begin_reversible_command (_("align selection"));
3561
3562         framepos_t const position = get_preferred_edit_position ();
3563
3564         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
3565                 align_region_internal ((*i)->region(), what, position);
3566         }
3567
3568         commit_reversible_command ();
3569 }
3570
3571 struct RegionSortByTime {
3572     bool operator() (const RegionView* a, const RegionView* b) {
3573             return a->region()->position() < b->region()->position();
3574     }
3575 };
3576
3577 void
3578 Editor::align_regions_relative (RegionPoint point)
3579 {
3580         RegionSelection const rs = get_regions_from_selection_and_edit_point ();
3581
3582         if (rs.empty()) {
3583                 return;
3584         }
3585
3586         framepos_t const position = get_preferred_edit_position ();
3587
3588         framepos_t distance = 0;
3589         framepos_t pos = 0;
3590         int dir = 1;
3591
3592         list<RegionView*> sorted;
3593         rs.by_position (sorted);
3594
3595         boost::shared_ptr<Region> r ((*sorted.begin())->region());
3596
3597         switch (point) {
3598         case Start:
3599                 pos = position;
3600                 if (position > r->position()) {
3601                         distance = position - r->position();
3602                 } else {
3603                         distance = r->position() - position;
3604                         dir = -1;
3605                 }
3606                 break;
3607
3608         case End:
3609                 if (position > r->last_frame()) {
3610                         distance = position - r->last_frame();
3611                         pos = r->position() + distance;
3612                 } else {
3613                         distance = r->last_frame() - position;
3614                         pos = r->position() - distance;
3615                         dir = -1;
3616                 }
3617                 break;
3618
3619         case SyncPoint:
3620                 pos = r->adjust_to_sync (position);
3621                 if (pos > r->position()) {
3622                         distance = pos - r->position();
3623                 } else {
3624                         distance = r->position() - pos;
3625                         dir = -1;
3626                 }
3627                 break;
3628         }
3629
3630         if (pos == r->position()) {
3631                 return;
3632         }
3633
3634         begin_reversible_command (_("align selection (relative)"));
3635
3636         /* move first one specially */
3637
3638         r->clear_changes ();
3639         r->set_position (pos);
3640         _session->add_command(new StatefulDiffCommand (r));
3641
3642         /* move rest by the same amount */
3643
3644         sorted.pop_front();
3645
3646         for (list<RegionView*>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
3647
3648                 boost::shared_ptr<Region> region ((*i)->region());
3649
3650                 region->clear_changes ();
3651
3652                 if (dir > 0) {
3653                         region->set_position (region->position() + distance);
3654                 } else {
3655                         region->set_position (region->position() - distance);
3656                 }
3657
3658                 _session->add_command(new StatefulDiffCommand (region));
3659
3660         }
3661
3662         commit_reversible_command ();
3663 }
3664
3665 void
3666 Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
3667 {
3668         begin_reversible_command (_("align region"));
3669         align_region_internal (region, point, position);
3670         commit_reversible_command ();
3671 }
3672
3673 void
3674 Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
3675 {
3676         region->clear_changes ();
3677
3678         switch (point) {
3679         case SyncPoint:
3680                 region->set_position (region->adjust_to_sync (position));
3681                 break;
3682
3683         case End:
3684                 if (position > region->length()) {
3685                         region->set_position (position - region->length());
3686                 }
3687                 break;
3688
3689         case Start:
3690                 region->set_position (position);
3691                 break;
3692         }
3693
3694         _session->add_command(new StatefulDiffCommand (region));
3695 }
3696
3697 void
3698 Editor::trim_region_front ()
3699 {
3700         trim_region (true);
3701 }
3702
3703 void
3704 Editor::trim_region_back ()
3705 {
3706         trim_region (false);
3707 }
3708
3709 void
3710 Editor::trim_region (bool front)
3711 {
3712         framepos_t where = get_preferred_edit_position();
3713         RegionSelection rs = get_regions_from_selection_and_edit_point ();
3714
3715         if (rs.empty()) {
3716                 return;
3717         }
3718
3719         begin_reversible_command (front ? _("trim front") : _("trim back"));
3720
3721         for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
3722                 if (!(*i)->region()->locked()) {
3723
3724                         (*i)->region()->clear_changes ();
3725
3726                         if (front) {
3727                                 (*i)->region()->trim_front (where);
3728                         } else {
3729                                 (*i)->region()->trim_end (where);
3730                         }
3731
3732                         _session->add_command (new StatefulDiffCommand ((*i)->region()));
3733                 }
3734         }
3735
3736         commit_reversible_command ();
3737 }
3738
3739 /** Trim the end of the selected regions to the position of the edit cursor */
3740 void
3741 Editor::trim_region_to_loop ()
3742 {
3743         Location* loc = _session->locations()->auto_loop_location();
3744         if (!loc) {
3745                 return;
3746         }
3747         trim_region_to_location (*loc, _("trim to loop"));
3748 }
3749
3750 void
3751 Editor::trim_region_to_punch ()
3752 {
3753         Location* loc = _session->locations()->auto_punch_location();
3754         if (!loc) {
3755                 return;
3756         }
3757         trim_region_to_location (*loc, _("trim to punch"));
3758 }
3759
3760 void
3761 Editor::trim_region_to_location (const Location& loc, const char* str)
3762 {
3763         RegionSelection rs = get_regions_from_selection_and_entered ();
3764         bool in_command = false;
3765
3766         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3767                 RegionView* rv = (*x);
3768
3769                 /* require region to span proposed trim */
3770                 switch (rv->region()->coverage (loc.start(), loc.end())) {
3771                 case Evoral::OverlapInternal:
3772                         break;
3773                 default:
3774                         continue;
3775                 }
3776
3777                 RouteTimeAxisView* tav = dynamic_cast<RouteTimeAxisView*> (&rv->get_time_axis_view());
3778                 if (!tav) {
3779                         return;
3780                 }
3781
3782                 float speed = 1.0;
3783                 framepos_t start;
3784                 framepos_t end;
3785
3786                 if (tav->track() != 0) {
3787                         speed = tav->track()->speed();
3788                 }
3789
3790                 start = session_frame_to_track_frame (loc.start(), speed);
3791                 end = session_frame_to_track_frame (loc.end(), speed);
3792
3793                 rv->region()->clear_changes ();
3794                 rv->region()->trim_to (start, (end - start));
3795
3796                 if (!in_command) {
3797                         begin_reversible_command (str);
3798                         in_command = true;
3799                 }
3800                 _session->add_command(new StatefulDiffCommand (rv->region()));
3801         }
3802
3803         if (in_command) {
3804                 commit_reversible_command ();
3805         }
3806 }
3807
3808 void
3809 Editor::trim_region_to_previous_region_end ()
3810 {
3811         return trim_to_region(false);
3812 }
3813
3814 void
3815 Editor::trim_region_to_next_region_start ()
3816 {
3817         return trim_to_region(true);
3818 }
3819
3820 void
3821 Editor::trim_to_region(bool forward)
3822 {
3823         RegionSelection rs = get_regions_from_selection_and_entered ();
3824         bool in_command = false;
3825
3826         boost::shared_ptr<Region> next_region;
3827
3828         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3829
3830                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3831
3832                 if (!arv) {
3833                         continue;
3834                 }
3835
3836                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3837
3838                 if (!atav) {
3839                         continue;
3840                 }
3841
3842                 float speed = 1.0;
3843
3844                 if (atav->track() != 0) {
3845                         speed = atav->track()->speed();
3846                 }
3847
3848
3849                 boost::shared_ptr<Region> region = arv->region();
3850                 boost::shared_ptr<Playlist> playlist (region->playlist());
3851
3852                 region->clear_changes ();
3853
3854                 if (forward) {
3855
3856                     next_region = playlist->find_next_region (region->first_frame(), Start, 1);
3857
3858                     if (!next_region) {
3859                         continue;
3860                     }
3861
3862                     region->trim_end((framepos_t) ( (next_region->first_frame() - 1) * speed));
3863                     arv->region_changed (PropertyChange (ARDOUR::Properties::length));
3864                 }
3865                 else {
3866
3867                     next_region = playlist->find_next_region (region->first_frame(), Start, 0);
3868
3869                     if(!next_region){
3870                         continue;
3871                     }
3872
3873                     region->trim_front((framepos_t) ((next_region->last_frame() + 1) * speed));
3874
3875                     arv->region_changed (ARDOUR::bounds_change);
3876                 }
3877
3878                 if (!in_command) {
3879                         begin_reversible_command (_("trim to region"));
3880                         in_command = true;
3881                 }
3882                 _session->add_command(new StatefulDiffCommand (region));
3883         }
3884
3885         if (in_command) {
3886                 commit_reversible_command ();
3887         }
3888 }
3889
3890 void
3891 Editor::unfreeze_route ()
3892 {
3893         if (clicked_routeview == 0 || !clicked_routeview->is_track()) {
3894                 return;
3895         }
3896
3897         clicked_routeview->track()->unfreeze ();
3898 }
3899
3900 void*
3901 Editor::_freeze_thread (void* arg)
3902 {
3903         return static_cast<Editor*>(arg)->freeze_thread ();
3904 }
3905
3906 void*
3907 Editor::freeze_thread ()
3908 {
3909         /* create event pool because we may need to talk to the session */
3910         SessionEvent::create_per_thread_pool ("freeze events", 64);
3911         /* create per-thread buffers for process() tree to use */
3912         clicked_routeview->audio_track()->freeze_me (*current_interthread_info);
3913         current_interthread_info->done = true;
3914         return 0;
3915 }
3916
3917 void
3918 Editor::freeze_route ()
3919 {
3920         if (!_session) {
3921                 return;
3922         }
3923
3924         /* stop transport before we start. this is important */
3925
3926         _session->request_transport_speed (0.0);
3927
3928         /* wait for just a little while, because the above call is asynchronous */
3929
3930         Glib::usleep (250000);
3931
3932         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3933                 return;
3934         }
3935
3936         if (!clicked_routeview->track()->bounceable (clicked_routeview->track()->main_outs(), true)) {
3937                 MessageDialog d (
3938                         _("This track/bus cannot be frozen because the signal adds or loses channels before reaching the outputs.\n"
3939                           "This is typically caused by plugins that generate stereo output from mono input or vice versa.")
3940                         );
3941                 d.set_title (_("Cannot freeze"));
3942                 d.run ();
3943                 return;
3944         }
3945
3946         if (clicked_routeview->track()->has_external_redirects()) {
3947                 MessageDialog d (string_compose (_("<b>%1</b>\n\nThis track has at least one send/insert/return as part of its signal flow.\n\n"
3948                                                    "Freezing will only process the signal as far as the first send/insert/return."),
3949                                                  clicked_routeview->track()->name()), true, MESSAGE_INFO, BUTTONS_NONE, true);
3950
3951                 d.add_button (_("Freeze anyway"), Gtk::RESPONSE_OK);
3952                 d.add_button (_("Don't freeze"), Gtk::RESPONSE_CANCEL);
3953                 d.set_title (_("Freeze Limits"));
3954
3955                 int response = d.run ();
3956
3957                 switch (response) {
3958                 case Gtk::RESPONSE_CANCEL:
3959                         return;
3960                 default:
3961                         break;
3962                 }
3963         }
3964
3965         InterThreadInfo itt;
3966         current_interthread_info = &itt;
3967
3968         InterthreadProgressWindow ipw (current_interthread_info, _("Freeze"), _("Cancel Freeze"));
3969
3970         pthread_create_and_store (X_("freezer"), &itt.thread, _freeze_thread, this);
3971
3972         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
3973
3974         while (!itt.done && !itt.cancel) {
3975                 gtk_main_iteration ();
3976         }
3977
3978         pthread_join (itt.thread, 0);
3979         current_interthread_info = 0;
3980 }
3981
3982 void
3983 Editor::bounce_range_selection (bool replace, bool enable_processing)
3984 {
3985         if (selection->time.empty()) {
3986                 return;
3987         }
3988
3989         TrackSelection views = selection->tracks;
3990
3991         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3992
3993                 if (enable_processing) {
3994
3995                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
3996
3997                         if (rtv && rtv->track() && replace && enable_processing && !rtv->track()->bounceable (rtv->track()->main_outs(), false)) {
3998                                 MessageDialog d (
3999                                         _("You can't perform this operation because the processing of the signal "
4000                                           "will cause one or more of the tracks to end up with a region with more channels than this track has inputs.\n\n"
4001                                           "You can do this without processing, which is a different operation.")
4002                                         );
4003                                 d.set_title (_("Cannot bounce"));
4004                                 d.run ();
4005                                 return;
4006                         }
4007                 }
4008         }
4009
4010         framepos_t start = selection->time[clicked_selection].start;
4011         framepos_t end = selection->time[clicked_selection].end;
4012         framepos_t cnt = end - start + 1;
4013         bool in_command = false;
4014
4015         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
4016
4017                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
4018
4019                 if (!rtv) {
4020                         continue;
4021                 }
4022
4023                 boost::shared_ptr<Playlist> playlist;
4024
4025                 if ((playlist = rtv->playlist()) == 0) {
4026                         continue;
4027                 }
4028
4029                 InterThreadInfo itt;
4030
4031                 playlist->clear_changes ();
4032                 playlist->clear_owned_changes ();
4033
4034                 boost::shared_ptr<Region> r;
4035
4036                 if (enable_processing) {
4037                         r = rtv->track()->bounce_range (start, start+cnt, itt, rtv->track()->main_outs(), false);
4038                 } else {
4039                         r = rtv->track()->bounce_range (start, start+cnt, itt, boost::shared_ptr<Processor>(), false);
4040                 }
4041
4042                 if (!r) {
4043                         continue;
4044                 }
4045
4046                 if (replace) {
4047                         list<AudioRange> ranges;
4048                         ranges.push_back (AudioRange (start, start+cnt, 0));
4049                         playlist->cut (ranges); // discard result
4050                         playlist->add_region (r, start);
4051                 }
4052
4053                 if (!in_command) {
4054                         begin_reversible_command (_("bounce range"));
4055                         in_command = true;
4056                 }
4057                 vector<Command*> cmds;
4058                 playlist->rdiff (cmds);
4059                 _session->add_commands (cmds);
4060
4061                 _session->add_command (new StatefulDiffCommand (playlist));
4062         }
4063
4064         if (in_command) {
4065                 commit_reversible_command ();
4066         }
4067 }
4068
4069 /** Delete selected regions, automation points or a time range */
4070 void
4071 Editor::delete_ ()
4072 {
4073         //special case: if the user is pointing in the editor/mixer strip, they may be trying to delete a plugin.
4074         //we need this because the editor-mixer strip is in the editor window, so it doesn't get the bindings from the mix window
4075         bool deleted = false;
4076         if ( current_mixer_strip && current_mixer_strip == MixerStrip::entered_mixer_strip() )
4077                 deleted = current_mixer_strip->delete_processors ();
4078
4079         if (!deleted)
4080                 cut_copy (Delete);
4081 }
4082
4083 /** Cut selected regions, automation points or a time range */
4084 void
4085 Editor::cut ()
4086 {
4087         cut_copy (Cut);
4088 }
4089
4090 /** Copy selected regions, automation points or a time range */
4091 void
4092 Editor::copy ()
4093 {
4094         cut_copy (Copy);
4095 }
4096
4097
4098 /** @return true if a Cut, Copy or Clear is possible */
4099 bool
4100 Editor::can_cut_copy () const
4101 {
4102         if (!selection->time.empty() || !selection->regions.empty() || !selection->points.empty())
4103                 return true;
4104
4105         return false;
4106 }
4107
4108
4109 /** Cut, copy or clear selected regions, automation points or a time range.
4110  * @param op Operation (Delete, Cut, Copy or Clear)
4111  */
4112 void
4113 Editor::cut_copy (CutCopyOp op)
4114 {
4115         /* only cancel selection if cut/copy is successful.*/
4116
4117         string opname;
4118
4119         switch (op) {
4120         case Delete:
4121                 opname = _("delete");
4122                 break;
4123         case Cut:
4124                 opname = _("cut");
4125                 break;
4126         case Copy:
4127                 opname = _("copy");
4128                 break;
4129         case Clear:
4130                 opname = _("clear");
4131                 break;
4132         }
4133
4134         /* if we're deleting something, and the mouse is still pressed,
4135            the thing we started a drag for will be gone when we release
4136            the mouse button(s). avoid this. see part 2 at the end of
4137            this function.
4138         */
4139
4140         if (op == Delete || op == Cut || op == Clear) {
4141                 if (_drags->active ()) {
4142                         _drags->abort ();
4143                 }
4144         }
4145
4146         if ( op != Delete )  //"Delete" doesn't change copy/paste buf
4147                 cut_buffer->clear ();
4148
4149         if (entered_marker) {
4150
4151                 /* cut/delete op while pointing at a marker */
4152
4153                 bool ignored;
4154                 Location* loc = find_location_from_marker (entered_marker, ignored);
4155
4156                 if (_session && loc) {
4157                         entered_marker = NULL;
4158                         Glib::signal_idle().connect (sigc::bind (sigc::mem_fun(*this, &Editor::really_remove_marker), loc));
4159                 }
4160
4161                 _drags->abort ();
4162                 return;
4163         }
4164
4165         switch (mouse_mode) {
4166         case MouseDraw:
4167         case MouseContent:
4168                 begin_reversible_command (opname + ' ' + X_("MIDI"));
4169                 cut_copy_midi (op);
4170                 commit_reversible_command ();
4171                 return;
4172         default:
4173                 break;
4174         }
4175
4176         bool did_edit = false;
4177
4178         if (!selection->regions.empty() || !selection->points.empty()) {
4179                 begin_reversible_command (opname + ' ' + _("objects"));
4180                 did_edit = true;
4181
4182                 if (!selection->regions.empty()) {
4183                         cut_copy_regions (op, selection->regions);
4184
4185                         if (op == Cut || op == Delete) {
4186                                 selection->clear_regions ();
4187                         }
4188                 }
4189
4190                 if (!selection->points.empty()) {
4191                         cut_copy_points (op);
4192
4193                         if (op == Cut || op == Delete) {
4194                                 selection->clear_points ();
4195                         }
4196                 }
4197         } else if (selection->time.empty()) {
4198                 framepos_t start, end;
4199                 /* no time selection, see if we can get an edit range
4200                    and use that.
4201                 */
4202                 if (get_edit_op_range (start, end)) {
4203                         selection->set (start, end);
4204                 }
4205         } else if (!selection->time.empty()) {
4206                 begin_reversible_command (opname + ' ' + _("range"));
4207
4208                 did_edit = true;
4209                 cut_copy_ranges (op);
4210
4211                 if (op == Cut || op == Delete) {
4212                         selection->clear_time ();
4213                 }
4214         }
4215
4216         if (did_edit) {
4217                 /* reset repeated paste state */
4218                 paste_count    = 0;
4219                 last_paste_pos = 0;
4220                 commit_reversible_command ();
4221         }
4222
4223         if (op == Delete || op == Cut || op == Clear) {
4224                 _drags->abort ();
4225         }
4226 }
4227
4228
4229 struct AutomationRecord {
4230         AutomationRecord () : state (0) , line(NULL) {}
4231         AutomationRecord (XMLNode* s, const AutomationLine* l) : state (s) , line (l) {}
4232
4233         XMLNode* state; ///< state before any operation
4234         const AutomationLine* line; ///< line this came from
4235         boost::shared_ptr<Evoral::ControlList> copy; ///< copied events for the cut buffer
4236 };
4237 struct PointsSelectionPositionSorter {
4238         bool operator() (ControlPoint* a, ControlPoint* b) {
4239                 return (*(a->model()))->when < (*(b->model()))->when;
4240         }
4241 };
4242 /** Cut, copy or clear selected automation points.
4243  *  @param op Operation (Cut, Copy or Clear)
4244  */
4245 void
4246 Editor::cut_copy_points (Editing::CutCopyOp op, Evoral::Beats earliest, bool midi)
4247 {
4248         if (selection->points.empty ()) {
4249                 return;
4250         }
4251
4252         /* XXX: not ideal, as there may be more than one track involved in the point selection */
4253         _last_cut_copy_source_track = &selection->points.front()->line().trackview;
4254
4255         /* Keep a record of the AutomationLists that we end up using in this operation */
4256         typedef std::map<boost::shared_ptr<AutomationList>, AutomationRecord> Lists;
4257         Lists lists;
4258
4259         /* user could select points in any order */
4260         selection->points.sort(PointsSelectionPositionSorter ());
4261
4262         /* Go through all selected points, making an AutomationRecord for each distinct AutomationList */
4263         for (PointSelection::iterator sel_point = selection->points.begin(); sel_point != selection->points.end(); ++sel_point) {
4264                 const AutomationLine&                   line = (*sel_point)->line();
4265                 const boost::shared_ptr<AutomationList> al   = line.the_list();
4266                 if (lists.find (al) == lists.end ()) {
4267                         /* We haven't seen this list yet, so make a record for it.  This includes
4268                            taking a copy of its current state, in case this is needed for undo later.
4269                         */
4270                         lists[al] = AutomationRecord (&al->get_state (), &line);
4271                 }
4272         }
4273
4274         if (op == Cut || op == Copy) {
4275                 /* This operation will involve putting things in the cut buffer, so create an empty
4276                    ControlList for each of our source lists to put the cut buffer data in.
4277                 */
4278                 for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
4279                         i->second.copy = i->first->create (i->first->parameter (), i->first->descriptor());
4280                 }
4281
4282                 /* Add all selected points to the relevant copy ControlLists */
4283                 MusicFrame start (std::numeric_limits<framepos_t>::max(), 0);
4284                 for (PointSelection::iterator sel_point = selection->points.begin(); sel_point != selection->points.end(); ++sel_point) {
4285                         boost::shared_ptr<AutomationList>    al = (*sel_point)->line().the_list();
4286                         AutomationList::const_iterator ctrl_evt = (*sel_point)->model ();
4287
4288                         lists[al].copy->fast_simple_add ((*ctrl_evt)->when, (*ctrl_evt)->value);
4289                         if (midi) {
4290                                 /* Update earliest MIDI start time in beats */
4291                                 earliest = std::min(earliest, Evoral::Beats((*ctrl_evt)->when));
4292                         } else {
4293                                 /* Update earliest session start time in frames */
4294                                 start.frame = std::min(start.frame, (*sel_point)->line().session_position(ctrl_evt));
4295                         }
4296                 }
4297
4298                 /* Snap start time backwards, so copy/paste is snap aligned. */
4299                 if (midi) {
4300                         if (earliest == Evoral::Beats::max()) {
4301                                 earliest = Evoral::Beats();  // Weird... don't offset
4302                         }
4303                         earliest.round_down_to_beat();
4304                 } else {
4305                         if (start.frame == std::numeric_limits<double>::max()) {
4306                                 start.frame = 0;  // Weird... don't offset
4307                         }
4308                         snap_to(start, RoundDownMaybe);
4309                 }
4310
4311                 const double line_offset = midi ? earliest.to_double() : start.frame;
4312                 for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
4313                         /* Correct this copy list so that it is relative to the earliest
4314                            start time, so relative ordering between points is preserved
4315                            when copying from several lists and the paste starts at the
4316                            earliest copied piece of data. */
4317                         boost::shared_ptr<Evoral::ControlList> &al_cpy = i->second.copy;
4318                         for (AutomationList::iterator ctrl_evt = al_cpy->begin(); ctrl_evt != al_cpy->end(); ++ctrl_evt) {
4319                                 (*ctrl_evt)->when -= line_offset;
4320                         }
4321
4322                         /* And add it to the cut buffer */
4323                         cut_buffer->add (al_cpy);
4324                 }
4325         }
4326
4327         if (op == Delete || op == Cut) {
4328                 /* This operation needs to remove things from the main AutomationList, so do that now */
4329
4330                 for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
4331                         i->first->freeze ();
4332                 }
4333
4334                 /* Remove each selected point from its AutomationList */
4335                 for (PointSelection::iterator sel_point = selection->points.begin(); sel_point != selection->points.end(); ++sel_point) {
4336                         AutomationLine& line = (*sel_point)->line ();
4337                         boost::shared_ptr<AutomationList> al = line.the_list();
4338
4339                         bool erase = true;
4340
4341                         if (dynamic_cast<AudioRegionGainLine*> (&line)) {
4342                                 /* removing of first and last gain point in region gain lines is prohibited*/
4343                                 if (line.is_last_point (*(*sel_point)) || line.is_first_point (*(*sel_point))) {
4344                                         erase = false;
4345                                 }
4346                         }
4347
4348                         if(erase) {
4349                                 al->erase ((*sel_point)->model ());
4350                         }
4351                 }
4352
4353                 /* Thaw the lists and add undo records for them */
4354                 for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
4355                         boost::shared_ptr<AutomationList> al = i->first;
4356                         al->thaw ();
4357                         _session->add_command (new MementoCommand<AutomationList> (*al.get(), i->second.state, &(al->get_state ())));
4358                 }
4359         }
4360 }
4361
4362 /** Cut, copy or clear selected automation points.
4363  * @param op Operation (Cut, Copy or Clear)
4364  */
4365 void
4366 Editor::cut_copy_midi (CutCopyOp op)
4367 {
4368         Evoral::Beats earliest = Evoral::Beats::max();
4369         for (MidiRegionSelection::iterator i = selection->midi_regions.begin(); i != selection->midi_regions.end(); ++i) {
4370                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
4371                 if (mrv) {
4372                         if (!mrv->selection().empty()) {
4373                                 earliest = std::min(earliest, (*mrv->selection().begin())->note()->time());
4374                         }
4375                         mrv->cut_copy_clear (op);
4376
4377                         /* XXX: not ideal, as there may be more than one track involved in the selection */
4378                         _last_cut_copy_source_track = &mrv->get_time_axis_view();
4379                 }
4380         }
4381
4382         if (!selection->points.empty()) {
4383                 cut_copy_points (op, earliest, true);
4384                 if (op == Cut || op == Delete) {
4385                         selection->clear_points ();
4386                 }
4387         }
4388 }
4389
4390 struct lt_playlist {
4391     bool operator () (const PlaylistState& a, const PlaylistState& b) {
4392             return a.playlist < b.playlist;
4393     }
4394 };
4395
4396 struct PlaylistMapping {
4397     TimeAxisView* tv;
4398     boost::shared_ptr<Playlist> pl;
4399
4400     PlaylistMapping (TimeAxisView* tvp) : tv (tvp) {}
4401 };
4402
4403 /** Remove `clicked_regionview' */
4404 void
4405 Editor::remove_clicked_region ()
4406 {
4407         if (clicked_routeview == 0 || clicked_regionview == 0) {
4408                 return;
4409         }
4410
4411         begin_reversible_command (_("remove region"));
4412
4413         boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
4414
4415         playlist->clear_changes ();
4416         playlist->clear_owned_changes ();
4417         playlist->remove_region (clicked_regionview->region());
4418         if (Config->get_edit_mode() == Ripple)
4419                 playlist->ripple (clicked_regionview->region()->position(), -clicked_regionview->region()->length(), boost::shared_ptr<Region>());
4420
4421         /* We might have removed regions, which alters other regions' layering_index,
4422            so we need to do a recursive diff here.
4423         */
4424         vector<Command*> cmds;
4425         playlist->rdiff (cmds);
4426         _session->add_commands (cmds);
4427
4428         _session->add_command(new StatefulDiffCommand (playlist));
4429         commit_reversible_command ();
4430 }
4431
4432
4433 /** Remove the selected regions */
4434 void
4435 Editor::remove_selected_regions ()
4436 {
4437         RegionSelection rs = get_regions_from_selection_and_entered ();
4438
4439         if (!_session || rs.empty()) {
4440                 return;
4441         }
4442
4443         list<boost::shared_ptr<Region> > regions_to_remove;
4444
4445         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4446                 // we can't just remove the region(s) in this loop because
4447                 // this removes them from the RegionSelection, and they thus
4448                 // disappear from underneath the iterator, and the ++i above
4449                 // SEGVs in a puzzling fashion.
4450
4451                 // so, first iterate over the regions to be removed from rs and
4452                 // add them to the regions_to_remove list, and then
4453                 // iterate over the list to actually remove them.
4454
4455                 regions_to_remove.push_back ((*i)->region());
4456         }
4457
4458         vector<boost::shared_ptr<Playlist> > playlists;
4459
4460         for (list<boost::shared_ptr<Region> >::iterator rl = regions_to_remove.begin(); rl != regions_to_remove.end(); ++rl) {
4461
4462                 boost::shared_ptr<Playlist> playlist = (*rl)->playlist();
4463
4464                 if (!playlist) {
4465                         // is this check necessary?
4466                         continue;
4467                 }
4468
4469                 /* get_regions_from_selection_and_entered() guarantees that
4470                    the playlists involved are unique, so there is no need
4471                    to check here.
4472                 */
4473
4474                 playlists.push_back (playlist);
4475
4476                 playlist->clear_changes ();
4477                 playlist->clear_owned_changes ();
4478                 playlist->freeze ();
4479                 playlist->remove_region (*rl);
4480                 if (Config->get_edit_mode() == Ripple)
4481                         playlist->ripple ((*rl)->position(), -(*rl)->length(), boost::shared_ptr<Region>());
4482
4483         }
4484
4485         vector<boost::shared_ptr<Playlist> >::iterator pl;
4486         bool in_command = false;
4487
4488         for (pl = playlists.begin(); pl != playlists.end(); ++pl) {
4489                 (*pl)->thaw ();
4490
4491                 /* We might have removed regions, which alters other regions' layering_index,
4492                    so we need to do a recursive diff here.
4493                 */
4494
4495                 if (!in_command) {
4496                         begin_reversible_command (_("remove region"));
4497                         in_command = true;
4498                 }
4499                 vector<Command*> cmds;
4500                 (*pl)->rdiff (cmds);
4501                 _session->add_commands (cmds);
4502
4503                 _session->add_command(new StatefulDiffCommand (*pl));
4504         }
4505
4506         if (in_command) {
4507                 commit_reversible_command ();
4508         }
4509 }
4510
4511 /** Cut, copy or clear selected regions.
4512  * @param op Operation (Cut, Copy or Clear)
4513  */
4514 void
4515 Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
4516 {
4517         /* we can't use a std::map here because the ordering is important, and we can't trivially sort
4518            a map when we want ordered access to both elements. i think.
4519         */
4520
4521         vector<PlaylistMapping> pmap;
4522
4523         framepos_t first_position = max_framepos;
4524
4525         typedef set<boost::shared_ptr<Playlist> > FreezeList;
4526         FreezeList freezelist;
4527
4528         /* get ordering correct before we cut/copy */
4529
4530         rs.sort_by_position_and_track ();
4531
4532         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4533
4534                 first_position = min ((framepos_t) (*x)->region()->position(), first_position);
4535
4536                 if (op == Cut || op == Clear || op == Delete) {
4537                         boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
4538
4539                         if (pl) {
4540                                 FreezeList::iterator fl;
4541
4542                                 // only take state if this is a new playlist.
4543                                 for (fl = freezelist.begin(); fl != freezelist.end(); ++fl) {
4544                                         if ((*fl) == pl) {
4545                                                 break;
4546                                         }
4547                                 }
4548
4549                                 if (fl == freezelist.end()) {
4550                                         pl->clear_changes();
4551                                         pl->clear_owned_changes ();
4552                                         pl->freeze ();
4553                                         freezelist.insert (pl);
4554                                 }
4555                         }
4556                 }
4557
4558                 TimeAxisView* tv = &(*x)->get_time_axis_view();
4559                 vector<PlaylistMapping>::iterator z;
4560
4561                 for (z = pmap.begin(); z != pmap.end(); ++z) {
4562                         if ((*z).tv == tv) {
4563                                 break;
4564                         }
4565                 }
4566
4567                 if (z == pmap.end()) {
4568                         pmap.push_back (PlaylistMapping (tv));
4569                 }
4570         }
4571
4572         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ) {
4573
4574                 boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
4575
4576                 if (!pl) {
4577                         /* region not yet associated with a playlist (e.g. unfinished
4578                            capture pass.
4579                         */
4580                         ++x;
4581                         continue;
4582                 }
4583
4584                 TimeAxisView& tv = (*x)->get_time_axis_view();
4585                 boost::shared_ptr<Playlist> npl;
4586                 RegionSelection::iterator tmp;
4587
4588                 tmp = x;
4589                 ++tmp;
4590
4591                 if (op != Delete) {
4592
4593                         vector<PlaylistMapping>::iterator z;
4594
4595                         for (z = pmap.begin(); z != pmap.end(); ++z) {
4596                                 if ((*z).tv == &tv) {
4597                                         break;
4598                                 }
4599                         }
4600
4601                         assert (z != pmap.end());
4602
4603                         if (!(*z).pl) {
4604                                 npl = PlaylistFactory::create (pl->data_type(), *_session, "cutlist", true);
4605                                 npl->freeze();
4606                                 (*z).pl = npl;
4607                         } else {
4608                                 npl = (*z).pl;
4609                         }
4610                 }
4611
4612                 boost::shared_ptr<Region> r = (*x)->region();
4613                 boost::shared_ptr<Region> _xx;
4614
4615                 assert (r != 0);
4616
4617                 switch (op) {
4618                 case Delete:
4619                         pl->remove_region (r);
4620                         if (Config->get_edit_mode() == Ripple)
4621                                 pl->ripple (r->position(), -r->length(), boost::shared_ptr<Region>());
4622                         break;
4623
4624                 case Cut:
4625                         _xx = RegionFactory::create (r);
4626                         npl->add_region (_xx, r->position() - first_position);
4627                         pl->remove_region (r);
4628                         if (Config->get_edit_mode() == Ripple)
4629                                 pl->ripple (r->position(), -r->length(), boost::shared_ptr<Region>());
4630                         break;
4631
4632                 case Copy:
4633                         /* copy region before adding, so we're not putting same object into two different playlists */
4634                         npl->add_region (RegionFactory::create (r), r->position() - first_position);
4635                         break;
4636
4637                 case Clear:
4638                         pl->remove_region (r);
4639                         if (Config->get_edit_mode() == Ripple)
4640                                 pl->ripple (r->position(), -r->length(), boost::shared_ptr<Region>());
4641                         break;
4642                 }
4643
4644                 x = tmp;
4645         }
4646
4647         if (op != Delete) {
4648
4649                 list<boost::shared_ptr<Playlist> > foo;
4650
4651                 /* the pmap is in the same order as the tracks in which selected regions occurred */
4652
4653                 for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
4654                         if ((*i).pl) {
4655                                 (*i).pl->thaw();
4656                                 foo.push_back ((*i).pl);
4657                         }
4658                 }
4659
4660                 if (!foo.empty()) {
4661                         cut_buffer->set (foo);
4662                 }
4663
4664                 if (pmap.empty()) {
4665                         _last_cut_copy_source_track = 0;
4666                 } else {
4667                         _last_cut_copy_source_track = pmap.front().tv;
4668                 }
4669         }
4670
4671         for (FreezeList::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
4672                 (*pl)->thaw ();
4673
4674                 /* We might have removed regions, which alters other regions' layering_index,
4675                    so we need to do a recursive diff here.
4676                 */
4677                 vector<Command*> cmds;
4678                 (*pl)->rdiff (cmds);
4679                 _session->add_commands (cmds);
4680
4681                 _session->add_command (new StatefulDiffCommand (*pl));
4682         }
4683 }
4684
4685 void
4686 Editor::cut_copy_ranges (CutCopyOp op)
4687 {
4688         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
4689
4690         /* Sort the track selection now, so that it if is used, the playlists
4691            selected by the calls below to cut_copy_clear are in the order that
4692            their tracks appear in the editor.  This makes things like paste
4693            of ranges work properly.
4694         */
4695
4696         sort_track_selection (ts);
4697
4698         if (ts.empty()) {
4699                 if (!entered_track) {
4700                         return;
4701                 }
4702                 ts.push_back (entered_track);
4703         }
4704
4705         for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
4706                 (*i)->cut_copy_clear (*selection, op);
4707         }
4708 }
4709
4710 void
4711 Editor::paste (float times, bool from_context)
4712 {
4713         DEBUG_TRACE (DEBUG::CutNPaste, "paste to preferred edit pos\n");
4714         MusicFrame where (get_preferred_edit_position (EDIT_IGNORE_NONE, from_context), 0);
4715         paste_internal (where.frame, times, 0);
4716 }
4717
4718 void
4719 Editor::mouse_paste ()
4720 {
4721         MusicFrame where (0, 0);
4722         bool ignored;
4723         if (!mouse_frame (where.frame, ignored)) {
4724                 return;
4725         }
4726
4727         snap_to (where);
4728         paste_internal (where.frame, 1, where.division);
4729 }
4730
4731 void
4732 Editor::paste_internal (framepos_t position, float times, const int32_t sub_num)
4733 {
4734         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("apparent paste position is %1\n", position));
4735
4736         if (cut_buffer->empty(internal_editing())) {
4737                 return;
4738         }
4739
4740         if (position == max_framepos) {
4741                 position = get_preferred_edit_position();
4742                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("preferred edit position is %1\n", position));
4743         }
4744
4745         if (position == last_paste_pos) {
4746                 /* repeated paste in the same position */
4747                 ++paste_count;
4748         } else {
4749                 /* paste in new location, reset repeated paste state */
4750                 paste_count = 0;
4751                 last_paste_pos = position;
4752         }
4753
4754         /* get everything in the correct order */
4755
4756         TrackViewList ts;
4757         if (!selection->tracks.empty()) {
4758                 /* If there is a track selection, paste into exactly those tracks and
4759                    only those tracks.  This allows the user to be explicit and override
4760                    the below "do the reasonable thing" logic. */
4761                 ts = selection->tracks.filter_to_unique_playlists ();
4762                 sort_track_selection (ts);
4763         } else {
4764                 /* Figure out which track to base the paste at. */
4765                 TimeAxisView* base_track = NULL;
4766                 if (_edit_point == Editing::EditAtMouse && entered_track) {
4767                         /* With the mouse edit point, paste onto the track under the mouse. */
4768                         base_track = entered_track;
4769                 } else if (_edit_point == Editing::EditAtMouse && entered_regionview) {
4770                         /* With the mouse edit point, paste onto the track of the region under the mouse. */
4771                         base_track = &entered_regionview->get_time_axis_view();
4772                 } else if (_last_cut_copy_source_track) {
4773                         /* Paste to the track that the cut/copy came from (see mantis #333). */
4774                         base_track = _last_cut_copy_source_track;
4775                 } else {
4776                         /* This is "impossible" since we've copied... well, do nothing. */
4777                         return;
4778                 }
4779
4780                 /* Walk up to parent if necessary, so base track is a route. */
4781                 while (base_track->get_parent()) {
4782                         base_track = base_track->get_parent();
4783                 }
4784
4785                 /* Add base track and all tracks below it.  The paste logic will select
4786                    the appropriate object types from the cut buffer in relative order. */
4787                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4788                         if ((*i)->order() >= base_track->order()) {
4789                                 ts.push_back(*i);
4790                         }
4791                 }
4792
4793                 /* Sort tracks so the nth track of type T will pick the nth object of type T. */
4794                 sort_track_selection (ts);
4795
4796                 /* Add automation children of each track in order, for pasting several lines. */
4797                 for (TrackViewList::iterator i = ts.begin(); i != ts.end();) {
4798                         /* Add any automation children for pasting several lines */
4799                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*i++);
4800                         if (!rtv) {
4801                                 continue;
4802                         }
4803
4804                         typedef RouteTimeAxisView::AutomationTracks ATracks;
4805                         const ATracks& atracks = rtv->automation_tracks();
4806                         for (ATracks::const_iterator a = atracks.begin(); a != atracks.end(); ++a) {
4807                                 i = ts.insert(i, a->second.get());
4808                                 ++i;
4809                         }
4810                 }
4811
4812                 /* We now have a list of trackviews starting at base_track, including
4813                    automation children, in the order shown in the editor, e.g. R1,
4814                    R1.A1, R1.A2, R2, R2.A1, ... */
4815         }
4816
4817         begin_reversible_command (Operations::paste);
4818
4819         if (ts.size() == 1 && cut_buffer->lines.size() == 1 &&
4820             dynamic_cast<AutomationTimeAxisView*>(ts.front())) {
4821             /* Only one line copied, and one automation track selected.  Do a
4822                "greedy" paste from one automation type to another. */
4823
4824             PasteContext ctx(paste_count, times, ItemCounts(), true);
4825             ts.front()->paste (position, *cut_buffer, ctx, sub_num);
4826
4827         } else {
4828
4829                 /* Paste into tracks */
4830
4831                 PasteContext ctx(paste_count, times, ItemCounts(), false);
4832                 for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
4833                         (*i)->paste (position, *cut_buffer, ctx, sub_num);
4834                 }
4835         }
4836
4837         commit_reversible_command ();
4838 }
4839
4840 void
4841 Editor::duplicate_regions (float times)
4842 {
4843         RegionSelection rs (get_regions_from_selection_and_entered());
4844         duplicate_some_regions (rs, times);
4845 }
4846
4847 void
4848 Editor::duplicate_some_regions (RegionSelection& regions, float times)
4849 {
4850         if (regions.empty ()) {
4851                 return;
4852         }
4853
4854         boost::shared_ptr<Playlist> playlist;
4855         RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
4856         RegionSelection foo;
4857
4858         framepos_t const start_frame = regions.start ();
4859         framepos_t const end_frame = regions.end_frame ();
4860         framecnt_t const gap = end_frame - start_frame + 1;
4861
4862         begin_reversible_command (Operations::duplicate_region);
4863
4864         selection->clear_regions ();
4865
4866         for (RegionSelection::iterator i = sel.begin(); i != sel.end(); ++i) {
4867
4868                 boost::shared_ptr<Region> r ((*i)->region());
4869
4870                 TimeAxisView& tv = (*i)->get_time_axis_view();
4871                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
4872                 latest_regionviews.clear ();
4873                 sigc::connection c = rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view));
4874
4875                 framepos_t const position = end_frame + (r->first_frame() - start_frame + 1);
4876                 playlist = (*i)->region()->playlist();
4877                 playlist->clear_changes ();
4878                 playlist->duplicate (r, position, gap, times);
4879                 _session->add_command(new StatefulDiffCommand (playlist));
4880
4881                 c.disconnect ();
4882
4883                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
4884         }
4885
4886         if (!foo.empty()) {
4887                 selection->set (foo);
4888         }
4889
4890         commit_reversible_command ();
4891 }
4892
4893 void
4894 Editor::duplicate_selection (float times)
4895 {
4896         if (selection->time.empty() || selection->tracks.empty()) {
4897                 return;
4898         }
4899
4900         boost::shared_ptr<Playlist> playlist;
4901
4902         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
4903
4904         bool in_command = false;
4905
4906         for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
4907                 if ((playlist = (*i)->playlist()) == 0) {
4908                         continue;
4909                 }
4910                 playlist->clear_changes ();
4911
4912                 if (clicked_selection) {
4913                         playlist->duplicate_range (selection->time[clicked_selection], times);
4914                 } else {
4915                         playlist->duplicate_ranges (selection->time, times);
4916                 }
4917
4918                 if (!in_command) {
4919                         begin_reversible_command (_("duplicate range selection"));
4920                         in_command = true;
4921                 }
4922                 _session->add_command (new StatefulDiffCommand (playlist));
4923
4924         }
4925
4926         if (in_command) {
4927                 if (times == 1.0f) {
4928                         // now "move" range selection to after the current range selection
4929                         framecnt_t distance = 0;
4930
4931                         if (clicked_selection) {
4932                                 distance =
4933                                     selection->time[clicked_selection].end - selection->time[clicked_selection].start;
4934                         } else {
4935                                 distance = selection->time.end_frame () - selection->time.start ();
4936                         }
4937
4938                         selection->move_time (distance);
4939                 }
4940                 commit_reversible_command ();
4941         }
4942 }
4943
4944 /** Reset all selected points to the relevant default value */
4945 void
4946 Editor::reset_point_selection ()
4947 {
4948         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
4949                 ARDOUR::AutomationList::iterator j = (*i)->model ();
4950                 (*j)->value = (*i)->line().the_list()->default_value ();
4951         }
4952 }
4953
4954 void
4955 Editor::center_playhead ()
4956 {
4957         float const page = _visible_canvas_width * samples_per_pixel;
4958         center_screen_internal (playhead_cursor->current_frame (), page);
4959 }
4960
4961 void
4962 Editor::center_edit_point ()
4963 {
4964         float const page = _visible_canvas_width * samples_per_pixel;
4965         center_screen_internal (get_preferred_edit_position(), page);
4966 }
4967
4968 /** Caller must begin and commit a reversible command */
4969 void
4970 Editor::clear_playlist (boost::shared_ptr<Playlist> playlist)
4971 {
4972         playlist->clear_changes ();
4973         playlist->clear ();
4974         _session->add_command (new StatefulDiffCommand (playlist));
4975 }
4976
4977 void
4978 Editor::nudge_track (bool use_edit, bool forwards)
4979 {
4980         boost::shared_ptr<Playlist> playlist;
4981         framepos_t distance;
4982         framepos_t next_distance;
4983         framepos_t start;
4984
4985         if (use_edit) {
4986                 start = get_preferred_edit_position();
4987         } else {
4988                 start = 0;
4989         }
4990
4991         if ((distance = get_nudge_distance (start, next_distance)) == 0) {
4992                 return;
4993         }
4994
4995         if (selection->tracks.empty()) {
4996                 return;
4997         }
4998
4999         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
5000         bool in_command = false;
5001
5002         for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
5003
5004                 if ((playlist = (*i)->playlist()) == 0) {
5005                         continue;
5006                 }
5007
5008                 playlist->clear_changes ();
5009                 playlist->clear_owned_changes ();
5010
5011                 playlist->nudge_after (start, distance, forwards);
5012
5013                 if (!in_command) {
5014                         begin_reversible_command (_("nudge track"));
5015                         in_command = true;
5016                 }
5017                 vector<Command*> cmds;
5018
5019                 playlist->rdiff (cmds);
5020                 _session->add_commands (cmds);
5021
5022                 _session->add_command (new StatefulDiffCommand (playlist));
5023         }
5024
5025         if (in_command) {
5026                 commit_reversible_command ();
5027         }
5028 }
5029
5030 void
5031 Editor::remove_last_capture ()
5032 {
5033         vector<string> choices;
5034         string prompt;
5035
5036         if (!_session) {
5037                 return;
5038         }
5039
5040         if (Config->get_verify_remove_last_capture()) {
5041                 prompt  = _("Do you really want to destroy the last capture?"
5042                             "\n(This is destructive and cannot be undone)");
5043
5044                 choices.push_back (_("No, do nothing."));
5045                 choices.push_back (_("Yes, destroy it."));
5046
5047                 Gtkmm2ext::Choice prompter (_("Destroy last capture"), prompt, choices);
5048
5049                 if (prompter.run () == 1) {
5050                         _session->remove_last_capture ();
5051                         _regions->redisplay ();
5052                 }
5053
5054         } else {
5055                 _session->remove_last_capture();
5056                 _regions->redisplay ();
5057         }
5058 }
5059
5060 void
5061 Editor::normalize_region ()
5062 {
5063         if (!_session) {
5064                 return;
5065         }
5066
5067         RegionSelection rs = get_regions_from_selection_and_entered ();
5068
5069         if (rs.empty()) {
5070                 return;
5071         }
5072
5073         NormalizeDialog dialog (rs.size() > 1);
5074
5075         if (dialog.run () != RESPONSE_ACCEPT) {
5076                 return;
5077         }
5078
5079         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
5080         gdk_flush ();
5081
5082         /* XXX: should really only count audio regions here */
5083         int const regions = rs.size ();
5084
5085         /* Make a list of the selected audio regions' maximum amplitudes, and also
5086            obtain the maximum amplitude of them all.
5087         */
5088         list<double> max_amps;
5089         list<double> rms_vals;
5090         double max_amp = 0;
5091         double max_rms = 0;
5092         bool use_rms = dialog.constrain_rms ();
5093
5094         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
5095                 AudioRegionView const * arv = dynamic_cast<AudioRegionView const *> (*i);
5096                 if (!arv) {
5097                         continue;
5098                 }
5099                 dialog.descend (1.0 / regions);
5100                 double const a = arv->audio_region()->maximum_amplitude (&dialog);
5101                 if (use_rms) {
5102                         double r = arv->audio_region()->rms (&dialog);
5103                         max_rms = max (max_rms, r);
5104                         rms_vals.push_back (r);
5105                 }
5106
5107                 if (a == -1) {
5108                         /* the user cancelled the operation */
5109                         return;
5110                 }
5111
5112                 max_amps.push_back (a);
5113                 max_amp = max (max_amp, a);
5114                 dialog.ascend ();
5115         }
5116
5117         list<double>::const_iterator a = max_amps.begin ();
5118         list<double>::const_iterator l = rms_vals.begin ();
5119         bool in_command = false;
5120
5121         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5122                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (*r);
5123                 if (!arv) {
5124                         continue;
5125                 }
5126
5127                 arv->region()->clear_changes ();
5128
5129                 double amp = dialog.normalize_individually() ? *a : max_amp;
5130                 double target = dialog.target_peak (); // dB
5131
5132                 if (use_rms) {
5133                         double const amp_rms = dialog.normalize_individually() ? *l : max_rms;
5134                         const double t_rms = dialog.target_rms ();
5135                         const gain_t c_peak = dB_to_coefficient (target);
5136                         const gain_t c_rms  = dB_to_coefficient (t_rms);
5137                         if ((amp_rms / c_rms) > (amp / c_peak)) {
5138                                 amp = amp_rms;
5139                                 target = t_rms;
5140                         }
5141                 }
5142
5143                 arv->audio_region()->normalize (amp, target);
5144
5145                 if (!in_command) {
5146                         begin_reversible_command (_("normalize"));
5147                         in_command = true;
5148                 }
5149                 _session->add_command (new StatefulDiffCommand (arv->region()));
5150
5151                 ++a;
5152                 ++l;
5153         }
5154
5155         if (in_command) {
5156                 commit_reversible_command ();
5157         }
5158 }
5159
5160
5161 void
5162 Editor::reset_region_scale_amplitude ()
5163 {
5164         if (!_session) {
5165                 return;
5166         }
5167
5168         RegionSelection rs = get_regions_from_selection_and_entered ();
5169
5170         if (rs.empty()) {
5171                 return;
5172         }
5173
5174         bool in_command = false;
5175
5176         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5177                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
5178                 if (!arv)
5179                         continue;
5180                 arv->region()->clear_changes ();
5181                 arv->audio_region()->set_scale_amplitude (1.0f);
5182
5183                 if(!in_command) {
5184                                 begin_reversible_command ("reset gain");
5185                                 in_command = true;
5186                 }
5187                 _session->add_command (new StatefulDiffCommand (arv->region()));
5188         }
5189
5190         if (in_command) {
5191                 commit_reversible_command ();
5192         }
5193 }
5194
5195 void
5196 Editor::adjust_region_gain (bool up)
5197 {
5198         RegionSelection rs = get_regions_from_selection_and_entered ();
5199
5200         if (!_session || rs.empty()) {
5201                 return;
5202         }
5203
5204         bool in_command = false;
5205
5206         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5207                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
5208                 if (!arv) {
5209                         continue;
5210                 }
5211
5212                 arv->region()->clear_changes ();
5213
5214                 double dB = accurate_coefficient_to_dB (arv->audio_region()->scale_amplitude ());
5215
5216                 if (up) {
5217                         dB += 1;
5218                 } else {
5219                         dB -= 1;
5220                 }
5221
5222                 arv->audio_region()->set_scale_amplitude (dB_to_coefficient (dB));
5223
5224                 if (!in_command) {
5225                                 begin_reversible_command ("adjust region gain");
5226                                 in_command = true;
5227                 }
5228                 _session->add_command (new StatefulDiffCommand (arv->region()));
5229         }
5230
5231         if (in_command) {
5232                 commit_reversible_command ();
5233         }
5234 }
5235
5236 void
5237 Editor::reset_region_gain ()
5238 {
5239         RegionSelection rs = get_regions_from_selection_and_entered ();
5240
5241         if (!_session || rs.empty()) {
5242                 return;
5243         }
5244
5245         bool in_command = false;
5246
5247         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5248                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
5249                 if (!arv) {
5250                         continue;
5251                 }
5252
5253                 arv->region()->clear_changes ();
5254
5255                 arv->audio_region()->set_scale_amplitude (1.0f);
5256
5257                 if (!in_command) {
5258                                 begin_reversible_command ("reset region gain");
5259                                 in_command = true;
5260                 }
5261                 _session->add_command (new StatefulDiffCommand (arv->region()));
5262         }
5263
5264         if (in_command) {
5265                 commit_reversible_command ();
5266         }
5267 }
5268
5269 void
5270 Editor::reverse_region ()
5271 {
5272         if (!_session) {
5273                 return;
5274         }
5275
5276         Reverse rev (*_session);
5277         apply_filter (rev, _("reverse regions"));
5278 }
5279
5280 void
5281 Editor::strip_region_silence ()
5282 {
5283         if (!_session) {
5284                 return;
5285         }
5286
5287         RegionSelection rs = get_regions_from_selection_and_entered ();
5288
5289         if (rs.empty()) {
5290                 return;
5291         }
5292
5293         std::list<RegionView*> audio_only;
5294
5295         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5296                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (*i);
5297                 if (arv) {
5298                         audio_only.push_back (arv);
5299                 }
5300         }
5301
5302         assert (!audio_only.empty());
5303
5304         StripSilenceDialog d (_session, audio_only);
5305         int const r = d.run ();
5306
5307         d.drop_rects ();
5308
5309         if (r == Gtk::RESPONSE_OK) {
5310                 ARDOUR::AudioIntervalMap silences;
5311                 d.silences (silences);
5312                 StripSilence s (*_session, silences, d.fade_length());
5313
5314                 apply_filter (s, _("strip silence"), &d);
5315         }
5316 }
5317
5318 Command*
5319 Editor::apply_midi_note_edit_op_to_region (MidiOperator& op, MidiRegionView& mrv)
5320 {
5321         Evoral::Sequence<Evoral::Beats>::Notes selected;
5322         mrv.selection_as_notelist (selected, true);
5323
5324         vector<Evoral::Sequence<Evoral::Beats>::Notes> v;
5325         v.push_back (selected);
5326
5327         Evoral::Beats pos_beats  = Evoral::Beats (mrv.midi_region()->beat()) - mrv.midi_region()->start_beats();
5328
5329         return op (mrv.midi_region()->model(), pos_beats, v);
5330 }
5331
5332 void
5333 Editor::apply_midi_note_edit_op (MidiOperator& op, const RegionSelection& rs)
5334 {
5335         if (rs.empty()) {
5336                 return;
5337         }
5338
5339         bool in_command = false;
5340
5341         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ) {
5342                 RegionSelection::const_iterator tmp = r;
5343                 ++tmp;
5344
5345                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*r);
5346
5347                 if (mrv) {
5348                         Command* cmd = apply_midi_note_edit_op_to_region (op, *mrv);
5349                         if (cmd) {
5350                                 if (!in_command) {
5351                                         begin_reversible_command (op.name ());
5352                                         in_command = true;
5353                                 }
5354                                 (*cmd)();
5355                                 _session->add_command (cmd);
5356                         }
5357                 }
5358
5359                 r = tmp;
5360         }
5361
5362         if (in_command) {
5363                 commit_reversible_command ();
5364         }
5365 }
5366
5367 void
5368 Editor::fork_region ()
5369 {
5370         RegionSelection rs = get_regions_from_selection_and_entered ();
5371
5372         if (rs.empty()) {
5373                 return;
5374         }
5375
5376         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
5377         bool in_command = false;
5378
5379         gdk_flush ();
5380
5381         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
5382                 RegionSelection::iterator tmp = r;
5383                 ++tmp;
5384
5385                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
5386
5387                 if (mrv) {
5388                         try {
5389                                 boost::shared_ptr<Playlist> playlist = mrv->region()->playlist();
5390                                 boost::shared_ptr<MidiSource> new_source = _session->create_midi_source_by_stealing_name (mrv->midi_view()->track());
5391                                 boost::shared_ptr<MidiRegion> newregion = mrv->midi_region()->clone (new_source);
5392
5393                                 if (!in_command) {
5394                                         begin_reversible_command (_("Fork Region(s)"));
5395                                         in_command = true;
5396                                 }
5397                                 playlist->clear_changes ();
5398                                 playlist->replace_region (mrv->region(), newregion, mrv->region()->position());
5399                                 _session->add_command(new StatefulDiffCommand (playlist));
5400                         } catch (...) {
5401                                 error << string_compose (_("Could not unlink %1"), mrv->region()->name()) << endmsg;
5402                         }
5403                 }
5404
5405                 r = tmp;
5406         }
5407
5408         if (in_command) {
5409                 commit_reversible_command ();
5410         }
5411 }
5412
5413 void
5414 Editor::quantize_region ()
5415 {
5416         if (_session) {
5417                 quantize_regions(get_regions_from_selection_and_entered ());
5418         }
5419 }
5420
5421 void
5422 Editor::quantize_regions (const RegionSelection& rs)
5423 {
5424         if (rs.n_midi_regions() == 0) {
5425                 return;
5426         }
5427
5428         if (!quantize_dialog) {
5429                 quantize_dialog = new QuantizeDialog (*this);
5430         }
5431
5432         if (quantize_dialog->is_mapped()) {
5433                 /* in progress already */
5434                 return;
5435         }
5436
5437         quantize_dialog->present ();
5438         const int r = quantize_dialog->run ();
5439         quantize_dialog->hide ();
5440
5441         if (r == Gtk::RESPONSE_OK) {
5442                 Quantize quant (quantize_dialog->snap_start(),
5443                                 quantize_dialog->snap_end(),
5444                                 quantize_dialog->start_grid_size(),
5445                                 quantize_dialog->end_grid_size(),
5446                                 quantize_dialog->strength(),
5447                                 quantize_dialog->swing(),
5448                                 quantize_dialog->threshold());
5449
5450                 apply_midi_note_edit_op (quant, rs);
5451         }
5452 }
5453
5454 void
5455 Editor::legatize_region (bool shrink_only)
5456 {
5457         if (_session) {
5458                 legatize_regions(get_regions_from_selection_and_entered (), shrink_only);
5459         }
5460 }
5461
5462 void
5463 Editor::legatize_regions (const RegionSelection& rs, bool shrink_only)
5464 {
5465         if (rs.n_midi_regions() == 0) {
5466                 return;
5467         }
5468
5469         Legatize legatize(shrink_only);
5470         apply_midi_note_edit_op (legatize, rs);
5471 }
5472
5473 void
5474 Editor::transform_region ()
5475 {
5476         if (_session) {
5477                 transform_regions(get_regions_from_selection_and_entered ());
5478         }
5479 }
5480
5481 void
5482 Editor::transform_regions (const RegionSelection& rs)
5483 {
5484         if (rs.n_midi_regions() == 0) {
5485                 return;
5486         }
5487
5488         TransformDialog td;
5489
5490         td.present();
5491         const int r = td.run();
5492         td.hide();
5493
5494         if (r == Gtk::RESPONSE_OK) {
5495                 Transform transform(td.get());
5496                 apply_midi_note_edit_op(transform, rs);
5497         }
5498 }
5499
5500 void
5501 Editor::transpose_region ()
5502 {
5503         if (_session) {
5504                 transpose_regions(get_regions_from_selection_and_entered ());
5505         }
5506 }
5507
5508 void
5509 Editor::transpose_regions (const RegionSelection& rs)
5510 {
5511         if (rs.n_midi_regions() == 0) {
5512                 return;
5513         }
5514
5515         TransposeDialog d;
5516         int const r = d.run ();
5517
5518         if (r == RESPONSE_ACCEPT) {
5519                 Transpose transpose(d.semitones ());
5520                 apply_midi_note_edit_op (transpose, rs);
5521         }
5522 }
5523
5524 void
5525 Editor::insert_patch_change (bool from_context)
5526 {
5527         RegionSelection rs = get_regions_from_selection_and_entered ();
5528
5529         if (rs.empty ()) {
5530                 return;
5531         }
5532
5533         const framepos_t p = get_preferred_edit_position (EDIT_IGNORE_NONE, from_context);
5534
5535         /* XXX: bit of a hack; use the MIDNAM from the first selected region;
5536            there may be more than one, but the PatchChangeDialog can only offer
5537            one set of patch menus.
5538         */
5539         MidiRegionView* first = dynamic_cast<MidiRegionView*> (rs.front ());
5540
5541         Evoral::PatchChange<Evoral::Beats> empty (Evoral::Beats(), 0, 0, 0);
5542         PatchChangeDialog d (0, _session, empty, first->instrument_info(), Gtk::Stock::ADD);
5543
5544         if (d.run() == RESPONSE_CANCEL) {
5545                 return;
5546         }
5547
5548         for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
5549                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*i);
5550                 if (mrv) {
5551                         if (p >= mrv->region()->first_frame() && p <= mrv->region()->last_frame()) {
5552                                 mrv->add_patch_change (p - mrv->region()->position(), d.patch ());
5553                         }
5554                 }
5555         }
5556 }
5557
5558 void
5559 Editor::apply_filter (Filter& filter, string command, ProgressReporter* progress)
5560 {
5561         RegionSelection rs = get_regions_from_selection_and_entered ();
5562
5563         if (rs.empty()) {
5564                 return;
5565         }
5566
5567         CursorContext::Handle cursor_ctx = CursorContext::create(*this, _cursors->wait);
5568         bool in_command = false;
5569
5570         gdk_flush ();
5571
5572         int n = 0;
5573         int const N = rs.size ();
5574
5575         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
5576                 RegionSelection::iterator tmp = r;
5577                 ++tmp;
5578
5579                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
5580                 if (arv) {
5581                         boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
5582
5583                         if (progress) {
5584                                 progress->descend (1.0 / N);
5585                         }
5586
5587                         if (arv->audio_region()->apply (filter, progress) == 0) {
5588
5589                                 playlist->clear_changes ();
5590                                 playlist->clear_owned_changes ();
5591
5592                                 if (!in_command) {
5593                                         begin_reversible_command (command);
5594                                         in_command = true;
5595                                 }
5596
5597                                 if (filter.results.empty ()) {
5598
5599                                         /* no regions returned; remove the old one */
5600                                         playlist->remove_region (arv->region ());
5601
5602                                 } else {
5603
5604                                         std::vector<boost::shared_ptr<Region> >::iterator res = filter.results.begin ();
5605
5606                                         /* first region replaces the old one */
5607                                         playlist->replace_region (arv->region(), *res, (*res)->position());
5608                                         ++res;
5609
5610                                         /* add the rest */
5611                                         while (res != filter.results.end()) {
5612                                                 playlist->add_region (*res, (*res)->position());
5613                                                 ++res;
5614                                         }
5615
5616                                 }
5617
5618                                 /* We might have removed regions, which alters other regions' layering_index,
5619                                    so we need to do a recursive diff here.
5620                                 */
5621                                 vector<Command*> cmds;
5622                                 playlist->rdiff (cmds);
5623                                 _session->add_commands (cmds);
5624
5625                                 _session->add_command(new StatefulDiffCommand (playlist));
5626                         }
5627
5628                         if (progress) {
5629                                 progress->ascend ();
5630                         }
5631                 }
5632
5633                 r = tmp;
5634                 ++n;
5635         }
5636
5637         if (in_command) {
5638                 commit_reversible_command ();
5639         }
5640 }
5641
5642 void
5643 Editor::external_edit_region ()
5644 {
5645         /* more to come */
5646 }
5647
5648 void
5649 Editor::reset_region_gain_envelopes ()
5650 {
5651         RegionSelection rs = get_regions_from_selection_and_entered ();
5652
5653         if (!_session || rs.empty()) {
5654                 return;
5655         }
5656
5657         bool in_command = false;
5658
5659         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5660                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
5661                 if (arv) {
5662                         boost::shared_ptr<AutomationList> alist (arv->audio_region()->envelope());
5663                         XMLNode& before (alist->get_state());
5664
5665                         arv->audio_region()->set_default_envelope ();
5666
5667                         if (!in_command) {
5668                                 begin_reversible_command (_("reset region gain"));
5669                                 in_command = true;
5670                         }
5671                         _session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
5672                 }
5673         }
5674
5675         if (in_command) {
5676                 commit_reversible_command ();
5677         }
5678 }
5679
5680 void
5681 Editor::set_region_gain_visibility (RegionView* rv)
5682 {
5683         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (rv);
5684         if (arv) {
5685                 arv->update_envelope_visibility();
5686         }
5687 }
5688
5689 void
5690 Editor::set_gain_envelope_visibility ()
5691 {
5692         if (!_session) {
5693                 return;
5694         }
5695
5696         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
5697                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
5698                 if (v) {
5699                         v->audio_view()->foreach_regionview (sigc::mem_fun (this, &Editor::set_region_gain_visibility));
5700                 }
5701         }
5702 }
5703
5704 void
5705 Editor::toggle_gain_envelope_active ()
5706 {
5707         if (_ignore_region_action) {
5708                 return;
5709         }
5710
5711         RegionSelection rs = get_regions_from_selection_and_entered ();
5712
5713         if (!_session || rs.empty()) {
5714                 return;
5715         }
5716
5717         bool in_command = false;
5718
5719         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5720                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
5721                 if (arv) {
5722                         arv->region()->clear_changes ();
5723                         arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
5724
5725                         if (!in_command) {
5726                                 begin_reversible_command (_("region gain envelope active"));
5727                                 in_command = true;
5728                         }
5729                         _session->add_command (new StatefulDiffCommand (arv->region()));
5730                 }
5731         }
5732
5733         if (in_command) {
5734                 commit_reversible_command ();
5735         }
5736 }
5737
5738 void
5739 Editor::toggle_region_lock ()
5740 {
5741         if (_ignore_region_action) {
5742                 return;
5743         }
5744
5745         RegionSelection rs = get_regions_from_selection_and_entered ();
5746
5747         if (!_session || rs.empty()) {
5748                 return;
5749         }
5750
5751         begin_reversible_command (_("toggle region lock"));
5752
5753         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5754                 (*i)->region()->clear_changes ();
5755                 (*i)->region()->set_locked (!(*i)->region()->locked());
5756                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
5757         }
5758
5759         commit_reversible_command ();
5760 }
5761
5762 void
5763 Editor::toggle_region_video_lock ()
5764 {
5765         if (_ignore_region_action) {
5766                 return;
5767         }
5768
5769         RegionSelection rs = get_regions_from_selection_and_entered ();
5770
5771         if (!_session || rs.empty()) {
5772                 return;
5773         }
5774
5775         begin_reversible_command (_("Toggle Video Lock"));
5776
5777         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5778                 (*i)->region()->clear_changes ();
5779                 (*i)->region()->set_video_locked (!(*i)->region()->video_locked());
5780                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
5781         }
5782
5783         commit_reversible_command ();
5784 }
5785
5786 void
5787 Editor::toggle_region_lock_style ()
5788 {
5789         if (_ignore_region_action) {
5790                 return;
5791         }
5792
5793         RegionSelection rs = get_regions_from_selection_and_entered ();
5794
5795         if (!_session || rs.empty()) {
5796                 return;
5797         }
5798
5799         Glib::RefPtr<ToggleAction> a = Glib::RefPtr<ToggleAction>::cast_dynamic (_region_actions->get_action("toggle-region-lock-style"));
5800         vector<Widget*> proxies = a->get_proxies();
5801         Gtk::CheckMenuItem* cmi = dynamic_cast<Gtk::CheckMenuItem*> (proxies.front());
5802
5803         assert (cmi);
5804
5805         begin_reversible_command (_("toggle region lock style"));
5806
5807         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5808                 (*i)->region()->clear_changes ();
5809                 PositionLockStyle const ns = ((*i)->region()->position_lock_style() == AudioTime && !cmi->get_inconsistent()) ? MusicTime : AudioTime;
5810                 (*i)->region()->set_position_lock_style (ns);
5811                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
5812         }
5813
5814         commit_reversible_command ();
5815 }
5816
5817 void
5818 Editor::toggle_opaque_region ()
5819 {
5820         if (_ignore_region_action) {
5821                 return;
5822         }
5823
5824         RegionSelection rs = get_regions_from_selection_and_entered ();
5825
5826         if (!_session || rs.empty()) {
5827                 return;
5828         }
5829
5830         begin_reversible_command (_("change region opacity"));
5831
5832         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5833                 (*i)->region()->clear_changes ();
5834                 (*i)->region()->set_opaque (!(*i)->region()->opaque());
5835                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
5836         }
5837
5838         commit_reversible_command ();
5839 }
5840
5841 void
5842 Editor::toggle_record_enable ()
5843 {
5844         bool new_state = false;
5845         bool first = true;
5846         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
5847                 RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
5848                 if (!rtav)
5849                         continue;
5850                 if (!rtav->is_track())
5851                         continue;
5852
5853                 if (first) {
5854                         new_state = !rtav->track()->rec_enable_control()->get_value();
5855                         first = false;
5856                 }
5857
5858                 rtav->track()->rec_enable_control()->set_value (new_state, Controllable::UseGroup);
5859         }
5860 }
5861
5862 void
5863 Editor::toggle_solo ()
5864 {
5865         bool new_state = false;
5866         bool first = true;
5867         boost::shared_ptr<ControlList> cl (new ControlList);
5868
5869         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
5870                 RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
5871
5872                 if (!rtav) {
5873                         continue;
5874                 }
5875
5876                 if (first) {
5877                         new_state = !rtav->route()->soloed ();
5878                         first = false;
5879                 }
5880
5881                 cl->push_back (rtav->route()->solo_control());
5882         }
5883
5884         _session->set_controls (cl, new_state ? 1.0 : 0.0, Controllable::UseGroup);
5885 }
5886
5887 void
5888 Editor::toggle_mute ()
5889 {
5890         bool new_state = false;
5891         bool first = true;
5892         boost::shared_ptr<RouteList> rl (new RouteList);
5893
5894         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
5895                 RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
5896
5897                 if (!rtav) {
5898                         continue;
5899                 }
5900
5901                 if (first) {
5902                         new_state = !rtav->route()->muted();
5903                         first = false;
5904                 }
5905
5906                 rl->push_back (rtav->route());
5907         }
5908
5909         _session->set_controls (route_list_to_control_list (rl, &Stripable::mute_control), new_state, Controllable::UseGroup);
5910 }
5911
5912 void
5913 Editor::toggle_solo_isolate ()
5914 {
5915 }
5916
5917
5918 void
5919 Editor::fade_range ()
5920 {
5921         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
5922
5923         begin_reversible_command (_("fade range"));
5924
5925         for (TrackViewList::iterator i = ts.begin(); i != ts.end(); ++i) {
5926                 (*i)->fade_range (selection->time);
5927         }
5928
5929         commit_reversible_command ();
5930 }
5931
5932
5933 void
5934 Editor::set_fade_length (bool in)
5935 {
5936         RegionSelection rs = get_regions_from_selection_and_entered ();
5937
5938         if (rs.empty()) {
5939                 return;
5940         }
5941
5942         /* we need a region to measure the offset from the start */
5943
5944         RegionView* rv = rs.front ();
5945
5946         framepos_t pos = get_preferred_edit_position();
5947         framepos_t len;
5948         char const * cmd;
5949
5950         if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
5951                 /* edit point is outside the relevant region */
5952                 return;
5953         }
5954
5955         if (in) {
5956                 if (pos <= rv->region()->position()) {
5957                         /* can't do it */
5958                         return;
5959                 }
5960                 len = pos - rv->region()->position();
5961                 cmd = _("set fade in length");
5962         } else {
5963                 if (pos >= rv->region()->last_frame()) {
5964                         /* can't do it */
5965                         return;
5966                 }
5967                 len = rv->region()->last_frame() - pos;
5968                 cmd = _("set fade out length");
5969         }
5970
5971         bool in_command = false;
5972
5973         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
5974                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
5975
5976                 if (!tmp) {
5977                         continue;
5978                 }
5979
5980                 boost::shared_ptr<AutomationList> alist;
5981                 if (in) {
5982                         alist = tmp->audio_region()->fade_in();
5983                 } else {
5984                         alist = tmp->audio_region()->fade_out();
5985                 }
5986
5987                 XMLNode &before = alist->get_state();
5988
5989                 if (in) {
5990                         tmp->audio_region()->set_fade_in_length (len);
5991                         tmp->audio_region()->set_fade_in_active (true);
5992                 } else {
5993                         tmp->audio_region()->set_fade_out_length (len);
5994                         tmp->audio_region()->set_fade_out_active (true);
5995                 }
5996
5997                 if (!in_command) {
5998                         begin_reversible_command (cmd);
5999                         in_command = true;
6000                 }
6001                 XMLNode &after = alist->get_state();
6002                 _session->add_command(new MementoCommand<AutomationList>(*alist, &before, &after));
6003         }
6004
6005         if (in_command) {
6006                 commit_reversible_command ();
6007         }
6008 }
6009
6010 void
6011 Editor::set_fade_in_shape (FadeShape shape)
6012 {
6013         RegionSelection rs = get_regions_from_selection_and_entered ();
6014
6015         if (rs.empty()) {
6016                 return;
6017         }
6018         bool in_command = false;
6019
6020         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
6021                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
6022
6023                 if (!tmp) {
6024                         continue;
6025                 }
6026
6027                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
6028                 XMLNode &before = alist->get_state();
6029
6030                 tmp->audio_region()->set_fade_in_shape (shape);
6031
6032                 if (!in_command) {
6033                         begin_reversible_command (_("set fade in shape"));
6034                         in_command = true;
6035                 }
6036                 XMLNode &after = alist->get_state();
6037                 _session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
6038         }
6039
6040         if (in_command) {
6041                 commit_reversible_command ();
6042         }
6043 }
6044
6045 void
6046 Editor::set_fade_out_shape (FadeShape shape)
6047 {
6048         RegionSelection rs = get_regions_from_selection_and_entered ();
6049
6050         if (rs.empty()) {
6051                 return;
6052         }
6053         bool in_command = false;
6054
6055         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
6056                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
6057
6058                 if (!tmp) {
6059                         continue;
6060                 }
6061
6062                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
6063                 XMLNode &before = alist->get_state();
6064
6065                 tmp->audio_region()->set_fade_out_shape (shape);
6066
6067                 if(!in_command) {
6068                         begin_reversible_command (_("set fade out shape"));
6069                         in_command = true;
6070                 }
6071                 XMLNode &after = alist->get_state();
6072                 _session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
6073         }
6074
6075         if (in_command) {
6076                 commit_reversible_command ();
6077         }
6078 }
6079
6080 void
6081 Editor::set_fade_in_active (bool yn)
6082 {
6083         RegionSelection rs = get_regions_from_selection_and_entered ();
6084
6085         if (rs.empty()) {
6086                 return;
6087         }
6088         bool in_command = false;
6089
6090         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
6091                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
6092
6093                 if (!tmp) {
6094                         continue;
6095                 }
6096
6097
6098                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
6099
6100                 ar->clear_changes ();
6101                 ar->set_fade_in_active (yn);
6102
6103                 if (!in_command) {
6104                         begin_reversible_command (_("set fade in active"));
6105                         in_command = true;
6106                 }
6107                 _session->add_command (new StatefulDiffCommand (ar));
6108         }
6109
6110         if (in_command) {
6111                 commit_reversible_command ();
6112         }
6113 }
6114
6115 void
6116 Editor::set_fade_out_active (bool yn)
6117 {
6118         RegionSelection rs = get_regions_from_selection_and_entered ();
6119
6120         if (rs.empty()) {
6121                 return;
6122         }
6123         bool in_command = false;
6124
6125         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
6126                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
6127
6128                 if (!tmp) {
6129                         continue;
6130                 }
6131
6132                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
6133
6134                 ar->clear_changes ();
6135                 ar->set_fade_out_active (yn);
6136
6137                 if (!in_command) {
6138                         begin_reversible_command (_("set fade out active"));
6139                         in_command = true;
6140                 }
6141                 _session->add_command(new StatefulDiffCommand (ar));
6142         }
6143
6144         if (in_command) {
6145                 commit_reversible_command ();
6146         }
6147 }
6148
6149 void
6150 Editor::toggle_region_fades (int dir)
6151 {
6152         if (_ignore_region_action) {
6153                 return;
6154         }
6155
6156         boost::shared_ptr<AudioRegion> ar;
6157         bool yn = false;
6158
6159         RegionSelection rs = get_regions_from_selection_and_entered ();
6160
6161         if (rs.empty()) {
6162                 return;
6163         }
6164
6165         RegionSelection::iterator i;
6166         for (i = rs.begin(); i != rs.end(); ++i) {
6167                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>((*i)->region())) != 0) {
6168                         if (dir == -1) {
6169                                 yn = ar->fade_out_active ();
6170                         } else {
6171                                 yn = ar->fade_in_active ();
6172                         }
6173                         break;
6174                 }
6175         }
6176
6177         if (i == rs.end()) {
6178                 return;
6179         }
6180
6181         /* XXX should this undo-able? */
6182         bool in_command = false;
6183
6184         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
6185                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>((*i)->region())) == 0) {
6186                         continue;
6187                 }
6188                 ar->clear_changes ();
6189
6190                 if (dir == 1 || dir == 0) {
6191                         ar->set_fade_in_active (!yn);
6192                 }
6193
6194                 if (dir == -1 || dir == 0) {
6195                         ar->set_fade_out_active (!yn);
6196                 }
6197                 if (!in_command) {
6198                         begin_reversible_command (_("toggle fade active"));
6199                         in_command = true;
6200                 }
6201                 _session->add_command(new StatefulDiffCommand (ar));
6202         }
6203
6204         if (in_command) {
6205                 commit_reversible_command ();
6206         }
6207 }
6208
6209
6210 /** Update region fade visibility after its configuration has been changed */
6211 void
6212 Editor::update_region_fade_visibility ()
6213 {
6214         bool _fade_visibility = _session->config.get_show_region_fades ();
6215
6216         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
6217                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
6218                 if (v) {
6219                         if (_fade_visibility) {
6220                                 v->audio_view()->show_all_fades ();
6221                         } else {
6222                                 v->audio_view()->hide_all_fades ();
6223                         }
6224                 }
6225         }
6226 }
6227
6228 void
6229 Editor::set_edit_point ()
6230 {
6231         bool ignored;
6232         MusicFrame where (0, 0);
6233
6234         if (!mouse_frame (where.frame, ignored)) {
6235                 return;
6236         }
6237
6238         snap_to (where);
6239
6240         if (selection->markers.empty()) {
6241
6242                 mouse_add_new_marker (where.frame);
6243
6244         } else {
6245                 bool ignored;
6246
6247                 Location* loc = find_location_from_marker (selection->markers.front(), ignored);
6248
6249                 if (loc) {
6250                         loc->move_to (where.frame, where.division);
6251                 }
6252         }
6253 }
6254
6255 void
6256 Editor::set_playhead_cursor ()
6257 {
6258         if (entered_marker) {
6259                 _session->request_locate (entered_marker->position(), _session->transport_rolling());
6260         } else {
6261                 MusicFrame where (0, 0);
6262                 bool ignored;
6263
6264                 if (!mouse_frame (where.frame, ignored)) {
6265                         return;
6266                 }
6267
6268                 snap_to (where);
6269
6270                 if (_session) {
6271                         _session->request_locate (where.frame, _session->transport_rolling());
6272                 }
6273         }
6274
6275 //not sure what this was for;  remove it for now.
6276 //      if (UIConfiguration::instance().get_follow_edits() && (!_session || !_session->config.get_external_sync())) {
6277 //              cancel_time_selection();
6278 //      }
6279
6280 }
6281
6282 void
6283 Editor::split_region ()
6284 {
6285         if (_drags->active ()) {
6286                 return;
6287         }
6288
6289         //if a range is selected, separate it
6290         if ( !selection->time.empty()) {
6291                 separate_regions_between (selection->time);
6292                 return;
6293         }
6294
6295         //if no range was selected, try to find some regions to split
6296         if (current_mouse_mode() == MouseObject) {  //don't try this for Internal Edit, Stretch, Draw, etc.
6297
6298                 RegionSelection rs = get_regions_from_selection_and_edit_point ();
6299                 const framepos_t pos = get_preferred_edit_position();
6300                 const int32_t division = get_grid_music_divisions (0);
6301                 MusicFrame where (pos, division);
6302
6303                 if (rs.empty()) {
6304                         return;
6305                 }
6306
6307                 split_regions_at (where, rs);
6308
6309         }
6310 }
6311
6312 void
6313 Editor::select_next_route()
6314 {
6315         if (selection->tracks.empty()) {
6316                 selection->set (track_views.front());
6317                 return;
6318         }
6319
6320         TimeAxisView* current = selection->tracks.front();
6321
6322         RouteUI *rui;
6323         do {
6324                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
6325
6326                         if (*i == current) {
6327                                 ++i;
6328                                 if (i != track_views.end()) {
6329                                         current = (*i);
6330                                 } else {
6331                                         current = (*(track_views.begin()));
6332                                         //selection->set (*(track_views.begin()));
6333                                 }
6334                                 break;
6335                         }
6336                 }
6337
6338                 rui = dynamic_cast<RouteUI *>(current);
6339
6340         } while (current->hidden() || (rui == NULL) || !rui->route()->active());
6341
6342         selection->set (current);
6343
6344         ensure_time_axis_view_is_visible (*current, false);
6345 }
6346
6347 void
6348 Editor::select_prev_route()
6349 {
6350         if (selection->tracks.empty()) {
6351                 selection->set (track_views.front());
6352                 return;
6353         }
6354
6355         TimeAxisView* current = selection->tracks.front();
6356
6357         RouteUI *rui;
6358         do {
6359                 for (TrackViewList::reverse_iterator i = track_views.rbegin(); i != track_views.rend(); ++i) {
6360
6361                         if (*i == current) {
6362                                 ++i;
6363                                 if (i != track_views.rend()) {
6364                                         current = (*i);
6365                                 } else {
6366                                         current = *(track_views.rbegin());
6367                                 }
6368                                 break;
6369                         }
6370                 }
6371                 rui = dynamic_cast<RouteUI *>(current);
6372
6373         } while (current->hidden() || (rui == NULL) || !rui->route()->active());
6374
6375         selection->set (current);
6376
6377         ensure_time_axis_view_is_visible (*current, false);
6378 }
6379
6380 void
6381 Editor::set_loop_from_selection (bool play)
6382 {
6383         if (_session == 0) {
6384                 return;
6385         }
6386
6387         framepos_t start, end;
6388         if (!get_selection_extents ( start, end))
6389                 return;
6390
6391         set_loop_range (start, end,  _("set loop range from selection"));
6392
6393         if (play) {
6394                 _session->request_play_loop (true, true);
6395         }
6396 }
6397
6398 void
6399 Editor::set_loop_from_region (bool play)
6400 {
6401         framepos_t start, end;
6402         if (!get_selection_extents ( start, end))
6403                 return;
6404
6405         set_loop_range (start, end, _("set loop range from region"));
6406
6407         if (play) {
6408                 _session->request_locate (start, true);
6409                 _session->request_play_loop (true);
6410         }
6411 }
6412
6413 void
6414 Editor::set_punch_from_selection ()
6415 {
6416         if (_session == 0) {
6417                 return;
6418         }
6419
6420         framepos_t start, end;
6421         if (!get_selection_extents ( start, end))
6422                 return;
6423
6424         set_punch_range (start, end,  _("set punch range from selection"));
6425 }
6426
6427 void
6428 Editor::set_auto_punch_range ()
6429 {
6430         // auto punch in/out button from a single button
6431         // If Punch In is unset, set punch range from playhead to end, enable punch in
6432         // If Punch In is set, the next punch sets Punch Out, unless the playhead has been
6433         //   rewound beyond the Punch In marker, in which case that marker will be moved back
6434         //   to the current playhead position.
6435         // If punch out is set, it clears the punch range and Punch In/Out buttons
6436
6437         if (_session == 0) {
6438                 return;
6439         }
6440
6441         Location* tpl = transport_punch_location();
6442         framepos_t now = playhead_cursor->current_frame();
6443         framepos_t begin = now;
6444         framepos_t end = _session->current_end_frame();
6445
6446         if (!_session->config.get_punch_in()) {
6447                 // First Press - set punch in and create range from here to eternity
6448                 set_punch_range (begin, end, _("Auto Punch In"));
6449                 _session->config.set_punch_in(true);
6450         } else if (tpl && !_session->config.get_punch_out()) {
6451                 // Second press - update end range marker and set punch_out
6452                 if (now < tpl->start()) {
6453                         // playhead has been rewound - move start back  and pretend nothing happened
6454                         begin = now;
6455                         set_punch_range (begin, end, _("Auto Punch In/Out"));
6456                 } else {
6457                         // normal case for 2nd press - set the punch out
6458                         end = playhead_cursor->current_frame ();
6459                         set_punch_range (tpl->start(), now, _("Auto Punch In/Out"));
6460                         _session->config.set_punch_out(true);
6461                 }
6462         } else  {
6463                 if (_session->config.get_punch_out()) {
6464                         _session->config.set_punch_out(false);
6465                 }
6466
6467                 if (_session->config.get_punch_in()) {
6468                         _session->config.set_punch_in(false);
6469                 }
6470
6471                 if (tpl)
6472                 {
6473                         // third press - unset punch in/out and remove range
6474                         _session->locations()->remove(tpl);
6475                 }
6476         }
6477
6478 }
6479
6480 void
6481 Editor::set_session_extents_from_selection ()
6482 {
6483         if (_session == 0) {
6484                 return;
6485         }
6486
6487         framepos_t start, end;
6488         if (!get_selection_extents ( start, end))
6489                 return;
6490
6491         Location* loc;
6492         if ((loc = _session->locations()->session_range_location()) == 0) {
6493                 _session->set_session_extents (start, end);  // this will create a new session range;  no need for UNDO
6494         } else {
6495                 XMLNode &before = loc->get_state();
6496
6497                 _session->set_session_extents (start, end);
6498
6499                 XMLNode &after = loc->get_state();
6500
6501                 begin_reversible_command (_("set session start/end from selection"));
6502
6503                 _session->add_command (new MementoCommand<Location>(*loc, &before, &after));
6504
6505                 commit_reversible_command ();
6506         }
6507
6508         _session->set_end_is_free (false);
6509 }
6510
6511 void
6512 Editor::set_punch_start_from_edit_point ()
6513 {
6514         if (_session) {
6515
6516                 MusicFrame start (0, 0);
6517                 framepos_t end = max_framepos;
6518
6519                 //use the existing punch end, if any
6520                 Location* tpl = transport_punch_location();
6521                 if (tpl) {
6522                         end = tpl->end();
6523                 }
6524
6525                 if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
6526                         start.frame = _session->audible_frame();
6527                 } else {
6528                         start.frame = get_preferred_edit_position();
6529                 }
6530
6531                 //snap the selection start/end
6532                 snap_to(start);
6533
6534                 //if there's not already a sensible selection endpoint, go "forever"
6535                 if (start.frame > end ) {
6536                         end = max_framepos;
6537                 }
6538
6539                 set_punch_range (start.frame, end, _("set punch start from EP"));
6540         }
6541
6542 }
6543
6544 void
6545 Editor::set_punch_end_from_edit_point ()
6546 {
6547         if (_session) {
6548
6549                 framepos_t start = 0;
6550                 MusicFrame end (max_framepos, 0);
6551
6552                 //use the existing punch start, if any
6553                 Location* tpl = transport_punch_location();
6554                 if (tpl) {
6555                         start = tpl->start();
6556                 }
6557
6558                 if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
6559                         end.frame = _session->audible_frame();
6560                 } else {
6561                         end.frame = get_preferred_edit_position();
6562                 }
6563
6564                 //snap the selection start/end
6565                 snap_to (end);
6566
6567                 set_punch_range (start, end.frame, _("set punch end from EP"));
6568
6569         }
6570 }
6571
6572 void
6573 Editor::set_loop_start_from_edit_point ()
6574 {
6575         if (_session) {
6576
6577                 MusicFrame start (0, 0);
6578                 framepos_t end = max_framepos;
6579
6580                 //use the existing loop end, if any
6581                 Location* tpl = transport_loop_location();
6582                 if (tpl) {
6583                         end = tpl->end();
6584                 }
6585
6586                 if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
6587                         start.frame = _session->audible_frame();
6588                 } else {
6589                         start.frame = get_preferred_edit_position();
6590                 }
6591
6592                 //snap the selection start/end
6593                 snap_to (start);
6594
6595                 //if there's not already a sensible selection endpoint, go "forever"
6596                 if (start.frame > end ) {
6597                         end = max_framepos;
6598                 }
6599
6600                 set_loop_range (start.frame, end, _("set loop start from EP"));
6601         }
6602
6603 }
6604
6605 void
6606 Editor::set_loop_end_from_edit_point ()
6607 {
6608         if (_session) {
6609
6610                 framepos_t start = 0;
6611                 MusicFrame end (max_framepos, 0);
6612
6613                 //use the existing loop start, if any
6614                 Location* tpl = transport_loop_location();
6615                 if (tpl) {
6616                         start = tpl->start();
6617                 }
6618
6619                 if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
6620                         end.frame = _session->audible_frame();
6621                 } else {
6622                         end.frame = get_preferred_edit_position();
6623                 }
6624
6625                 //snap the selection start/end
6626                 snap_to(end);
6627
6628                 set_loop_range (start, end.frame, _("set loop end from EP"));
6629         }
6630 }
6631
6632 void
6633 Editor::set_punch_from_region ()
6634 {
6635         framepos_t start, end;
6636         if (!get_selection_extents ( start, end))
6637                 return;
6638
6639         set_punch_range (start, end, _("set punch range from region"));
6640 }
6641
6642 void
6643 Editor::pitch_shift_region ()
6644 {
6645         RegionSelection rs = get_regions_from_selection_and_entered ();
6646
6647         RegionSelection audio_rs;
6648         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
6649                 if (dynamic_cast<AudioRegionView*> (*i)) {
6650                         audio_rs.push_back (*i);
6651                 }
6652         }
6653
6654         if (audio_rs.empty()) {
6655                 return;
6656         }
6657
6658         pitch_shift (audio_rs, 1.2);
6659 }
6660
6661 void
6662 Editor::set_tempo_from_region ()
6663 {
6664         RegionSelection rs = get_regions_from_selection_and_entered ();
6665
6666         if (!_session || rs.empty()) {
6667                 return;
6668         }
6669
6670         RegionView* rv = rs.front();
6671
6672         define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
6673 }
6674
6675 void
6676 Editor::use_range_as_bar ()
6677 {
6678         framepos_t start, end;
6679         if (get_edit_op_range (start, end)) {
6680                 define_one_bar (start, end);
6681         }
6682 }
6683
6684 void
6685 Editor::define_one_bar (framepos_t start, framepos_t end)
6686 {
6687         framepos_t length = end - start;
6688
6689         const Meter& m (_session->tempo_map().meter_at_frame (start));
6690
6691         /* length = 1 bar */
6692
6693         /* We're going to deliver a constant tempo here,
6694            so we can use frames per beat to determine length.
6695            now we want frames per beat.
6696            we have frames per bar, and beats per bar, so ...
6697         */
6698
6699         /* XXXX METER MATH */
6700
6701         double frames_per_beat = length / m.divisions_per_bar();
6702
6703         /* beats per minute = */
6704
6705         double beats_per_minute = (_session->frame_rate() * 60.0) / frames_per_beat;
6706
6707         /* now decide whether to:
6708
6709             (a) set global tempo
6710             (b) add a new tempo marker
6711
6712         */
6713
6714         const TempoSection& t (_session->tempo_map().tempo_section_at_frame (start));
6715
6716         bool do_global = false;
6717
6718         if ((_session->tempo_map().n_tempos() == 1) && (_session->tempo_map().n_meters() == 1)) {
6719
6720                 /* only 1 tempo & 1 meter: ask if the user wants to set the tempo
6721                    at the start, or create a new marker
6722                 */
6723
6724                 vector<string> options;
6725                 options.push_back (_("Cancel"));
6726                 options.push_back (_("Add new marker"));
6727                 options.push_back (_("Set global tempo"));
6728
6729                 Choice c (
6730                         _("Define one bar"),
6731                         _("Do you want to set the global tempo or add a new tempo marker?"),
6732                         options
6733                         );
6734
6735                 c.set_default_response (2);
6736
6737                 switch (c.run()) {
6738                 case 0:
6739                         return;
6740
6741                 case 2:
6742                         do_global = true;
6743                         break;
6744
6745                 default:
6746                         do_global = false;
6747                 }
6748
6749         } else {
6750
6751                 /* more than 1 tempo and/or meter section already, go ahead do the "usual":
6752                    if the marker is at the region starter, change it, otherwise add
6753                    a new tempo marker
6754                 */
6755         }
6756
6757         begin_reversible_command (_("set tempo from region"));
6758         XMLNode& before (_session->tempo_map().get_state());
6759
6760         if (do_global) {
6761                 _session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type(), t.end_note_types_per_minute());
6762         } else if (t.frame() == start) {
6763                 _session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type(), t.end_note_types_per_minute());
6764         } else {
6765                 /* constant tempo */
6766                 const Tempo tempo (beats_per_minute, t.note_type());
6767                 _session->tempo_map().add_tempo (tempo, 0.0, start, AudioTime);
6768         }
6769
6770         XMLNode& after (_session->tempo_map().get_state());
6771
6772         _session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
6773         commit_reversible_command ();
6774 }
6775
6776 void
6777 Editor::split_region_at_transients ()
6778 {
6779         AnalysisFeatureList positions;
6780
6781         RegionSelection rs = get_regions_from_selection_and_entered ();
6782
6783         if (!_session || rs.empty()) {
6784                 return;
6785         }
6786
6787         begin_reversible_command (_("split regions"));
6788
6789         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
6790
6791                 RegionSelection::iterator tmp;
6792
6793                 tmp = i;
6794                 ++tmp;
6795
6796                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i)->region());
6797
6798                 if (ar) {
6799                         ar->transients (positions);
6800                         split_region_at_points ((*i)->region(), positions, true);
6801                         positions.clear ();
6802                 }
6803
6804                 i = tmp;
6805         }
6806
6807         commit_reversible_command ();
6808
6809 }
6810
6811 void
6812 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret, bool select_new)
6813 {
6814         bool use_rhythmic_rodent = false;
6815
6816         boost::shared_ptr<Playlist> pl = r->playlist();
6817
6818         list<boost::shared_ptr<Region> > new_regions;
6819
6820         if (!pl) {
6821                 return;
6822         }
6823
6824         if (positions.empty()) {
6825                 return;
6826         }
6827
6828         if (positions.size() > 20 && can_ferret) {
6829                 std::string msgstr = string_compose (_("You are about to split\n%1\ninto %2 pieces.\nThis could take a long time."), r->name(), positions.size() + 1);
6830                 MessageDialog msg (msgstr,
6831                                    false,
6832                                    Gtk::MESSAGE_INFO,
6833                                    Gtk::BUTTONS_OK_CANCEL);
6834
6835                 if (can_ferret) {
6836                         msg.add_button (_("Call for the Ferret!"), RESPONSE_APPLY);
6837                         msg.set_secondary_text (_("Press OK to continue with this split operation\nor ask the Ferret dialog to tune the analysis"));
6838                 } else {
6839                         msg.set_secondary_text (_("Press OK to continue with this split operation"));
6840                 }
6841
6842                 msg.set_title (_("Excessive split?"));
6843                 msg.present ();
6844
6845                 int response = msg.run();
6846                 msg.hide ();
6847
6848                 switch (response) {
6849                 case RESPONSE_OK:
6850                         break;
6851                 case RESPONSE_APPLY:
6852                         use_rhythmic_rodent = true;
6853                         break;
6854                 default:
6855                         return;
6856                 }
6857         }
6858
6859         if (use_rhythmic_rodent) {
6860                 show_rhythm_ferret ();
6861                 return;
6862         }
6863
6864         AnalysisFeatureList::const_iterator x;
6865
6866         pl->clear_changes ();
6867         pl->clear_owned_changes ();
6868
6869         x = positions.begin();
6870
6871         if (x == positions.end()) {
6872                 return;
6873         }
6874
6875         pl->freeze ();
6876         pl->remove_region (r);
6877
6878         framepos_t pos = 0;
6879
6880         framepos_t rstart = r->first_frame ();
6881         framepos_t rend = r->last_frame ();
6882
6883         while (x != positions.end()) {
6884
6885                 /* deal with positons that are out of scope of present region bounds */
6886                 if (*x <= rstart || *x > rend) {
6887                         ++x;
6888                         continue;
6889                 }
6890
6891                 /* file start = original start + how far we from the initial position ?  */
6892
6893                 framepos_t file_start = r->start() + pos;
6894
6895                 /* length = next position - current position */
6896
6897                 framepos_t len = (*x) - pos - rstart;
6898
6899                 /* XXX we do we really want to allow even single-sample regions?
6900                  * shouldn't we have some kind of lower limit on region size?
6901                  */
6902
6903                 if (len <= 0) {
6904                         break;
6905                 }
6906
6907                 string new_name;
6908
6909                 if (RegionFactory::region_name (new_name, r->name())) {
6910                         break;
6911                 }
6912
6913                 /* do NOT announce new regions 1 by one, just wait till they are all done */
6914
6915                 PropertyList plist;
6916
6917                 plist.add (ARDOUR::Properties::start, file_start);
6918                 plist.add (ARDOUR::Properties::length, len);
6919                 plist.add (ARDOUR::Properties::name, new_name);
6920                 plist.add (ARDOUR::Properties::layer, 0);
6921                 // TODO set transients_offset
6922
6923                 boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
6924                 /* because we set annouce to false, manually add the new region to the
6925                  * RegionFactory map
6926                  */
6927                 RegionFactory::map_add (nr);
6928
6929                 pl->add_region (nr, rstart + pos);
6930
6931                 if (select_new) {
6932                         new_regions.push_front(nr);
6933                 }
6934
6935                 pos += len;
6936                 ++x;
6937         }
6938
6939         string new_name;
6940
6941         RegionFactory::region_name (new_name, r->name());
6942
6943         /* Add the final region */
6944         PropertyList plist;
6945
6946         plist.add (ARDOUR::Properties::start, r->start() + pos);
6947         plist.add (ARDOUR::Properties::length, r->last_frame() - (r->position() + pos) + 1);
6948         plist.add (ARDOUR::Properties::name, new_name);
6949         plist.add (ARDOUR::Properties::layer, 0);
6950
6951         boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), plist, false);
6952         /* because we set annouce to false, manually add the new region to the
6953            RegionFactory map
6954         */
6955         RegionFactory::map_add (nr);
6956         pl->add_region (nr, r->position() + pos);
6957
6958         if (select_new) {
6959                 new_regions.push_front(nr);
6960         }
6961
6962         pl->thaw ();
6963
6964         /* We might have removed regions, which alters other regions' layering_index,
6965            so we need to do a recursive diff here.
6966         */
6967         vector<Command*> cmds;
6968         pl->rdiff (cmds);
6969         _session->add_commands (cmds);
6970
6971         _session->add_command (new StatefulDiffCommand (pl));
6972
6973         if (select_new) {
6974
6975                 for (list<boost::shared_ptr<Region> >::iterator i = new_regions.begin(); i != new_regions.end(); ++i){
6976                         set_selected_regionview_from_region_list ((*i), Selection::Add);
6977                 }
6978         }
6979 }
6980
6981 void
6982 Editor::place_transient()
6983 {
6984         if (!_session) {
6985                 return;
6986         }
6987
6988         RegionSelection rs = get_regions_from_selection_and_edit_point ();
6989
6990         if (rs.empty()) {
6991                 return;
6992         }
6993
6994         framepos_t where = get_preferred_edit_position();
6995
6996         begin_reversible_command (_("place transient"));
6997
6998         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
6999                 (*r)->region()->add_transient(where);
7000         }
7001
7002         commit_reversible_command ();
7003 }
7004
7005 void
7006 Editor::remove_transient(ArdourCanvas::Item* item)
7007 {
7008         if (!_session) {
7009                 return;
7010         }
7011
7012         ArdourCanvas::Line* _line = reinterpret_cast<ArdourCanvas::Line*> (item);
7013         assert (_line);
7014
7015         AudioRegionView* _arv = reinterpret_cast<AudioRegionView*> (item->get_data ("regionview"));
7016         _arv->remove_transient (*(float*) _line->get_data ("position"));
7017 }
7018
7019 void
7020 Editor::snap_regions_to_grid ()
7021 {
7022         list <boost::shared_ptr<Playlist > > used_playlists;
7023
7024         RegionSelection rs = get_regions_from_selection_and_entered ();
7025
7026         if (!_session || rs.empty()) {
7027                 return;
7028         }
7029
7030         begin_reversible_command (_("snap regions to grid"));
7031
7032         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
7033
7034                 boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
7035
7036                 if (!pl->frozen()) {
7037                         /* we haven't seen this playlist before */
7038
7039                         /* remember used playlists so we can thaw them later */
7040                         used_playlists.push_back(pl);
7041                         pl->freeze();
7042                 }
7043                 (*r)->region()->clear_changes ();
7044
7045                 MusicFrame start ((*r)->region()->first_frame (), 0);
7046                 snap_to (start);
7047                 (*r)->region()->set_position (start.frame, start.division);
7048                 _session->add_command(new StatefulDiffCommand ((*r)->region()));
7049         }
7050
7051         while (used_playlists.size() > 0) {
7052                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
7053                 (*i)->thaw();
7054                 used_playlists.pop_front();
7055         }
7056
7057         commit_reversible_command ();
7058 }
7059
7060 void
7061 Editor::close_region_gaps ()
7062 {
7063         list <boost::shared_ptr<Playlist > > used_playlists;
7064
7065         RegionSelection rs = get_regions_from_selection_and_entered ();
7066
7067         if (!_session || rs.empty()) {
7068                 return;
7069         }
7070
7071         Dialog dialog (_("Close Region Gaps"));
7072
7073         Table table (2, 3);
7074         table.set_spacings (12);
7075         table.set_border_width (12);
7076         Label* l = manage (left_aligned_label (_("Crossfade length")));
7077         table.attach (*l, 0, 1, 0, 1);
7078
7079         SpinButton spin_crossfade (1, 0);
7080         spin_crossfade.set_range (0, 15);
7081         spin_crossfade.set_increments (1, 1);
7082         spin_crossfade.set_value (5);
7083         table.attach (spin_crossfade, 1, 2, 0, 1);
7084
7085         table.attach (*manage (new Label (_("ms"))), 2, 3, 0, 1);
7086
7087         l = manage (left_aligned_label (_("Pull-back length")));
7088         table.attach (*l, 0, 1, 1, 2);
7089
7090         SpinButton spin_pullback (1, 0);
7091         spin_pullback.set_range (0, 100);
7092         spin_pullback.set_increments (1, 1);
7093         spin_pullback.set_value(30);
7094         table.attach (spin_pullback, 1, 2, 1, 2);
7095
7096         table.attach (*manage (new Label (_("ms"))), 2, 3, 1, 2);
7097
7098         dialog.get_vbox()->pack_start (table);
7099         dialog.add_button (Stock::CANCEL, RESPONSE_CANCEL);
7100         dialog.add_button (_("Ok"), RESPONSE_ACCEPT);
7101         dialog.show_all ();
7102
7103         if (dialog.run () == RESPONSE_CANCEL) {
7104                 return;
7105         }
7106
7107         framepos_t crossfade_len = spin_crossfade.get_value();
7108         framepos_t pull_back_frames = spin_pullback.get_value();
7109
7110         crossfade_len = lrintf (crossfade_len * _session->frame_rate()/1000);
7111         pull_back_frames = lrintf (pull_back_frames * _session->frame_rate()/1000);
7112
7113         /* Iterate over the region list and make adjacent regions overlap by crossfade_len_ms */
7114
7115         begin_reversible_command (_("close region gaps"));
7116
7117         int idx = 0;
7118         boost::shared_ptr<Region> last_region;
7119
7120         rs.sort_by_position_and_track();
7121
7122         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
7123
7124                 boost::shared_ptr<Playlist> pl = (*r)->region()->playlist();
7125
7126                 if (!pl->frozen()) {
7127                         /* we haven't seen this playlist before */
7128
7129                         /* remember used playlists so we can thaw them later */
7130                         used_playlists.push_back(pl);
7131                         pl->freeze();
7132                 }
7133
7134                 framepos_t position = (*r)->region()->position();
7135
7136                 if (idx == 0 || position < last_region->position()){
7137                         last_region = (*r)->region();
7138                         idx++;
7139                         continue;
7140                 }
7141
7142                 (*r)->region()->clear_changes ();
7143                 (*r)->region()->trim_front( (position - pull_back_frames));
7144
7145                 last_region->clear_changes ();
7146                 last_region->trim_end( (position - pull_back_frames + crossfade_len));
7147
7148                 _session->add_command (new StatefulDiffCommand ((*r)->region()));
7149                 _session->add_command (new StatefulDiffCommand (last_region));
7150
7151                 last_region = (*r)->region();
7152                 idx++;
7153         }
7154
7155         while (used_playlists.size() > 0) {
7156                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
7157                 (*i)->thaw();
7158                 used_playlists.pop_front();
7159         }
7160
7161         commit_reversible_command ();
7162 }
7163
7164 void
7165 Editor::tab_to_transient (bool forward)
7166 {
7167         AnalysisFeatureList positions;
7168
7169         RegionSelection rs = get_regions_from_selection_and_entered ();
7170
7171         if (!_session) {
7172                 return;
7173         }
7174
7175         framepos_t pos = _session->audible_frame ();
7176
7177         if (!selection->tracks.empty()) {
7178
7179                 /* don't waste time searching for transients in duplicate playlists.
7180                  */
7181
7182                 TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
7183
7184                 for (TrackViewList::iterator t = ts.begin(); t != ts.end(); ++t) {
7185
7186                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
7187
7188                         if (rtv) {
7189                                 boost::shared_ptr<Track> tr = rtv->track();
7190                                 if (tr) {
7191                                         boost::shared_ptr<Playlist> pl = tr->playlist ();
7192                                         if (pl) {
7193                                                 framepos_t result = pl->find_next_transient (pos, forward ? 1 : -1);
7194
7195                                                 if (result >= 0) {
7196                                                         positions.push_back (result);
7197                                                 }
7198                                         }
7199                                 }
7200                         }
7201                 }
7202
7203         } else {
7204
7205                 if (rs.empty()) {
7206                         return;
7207                 }
7208
7209                 for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
7210                         (*r)->region()->get_transients (positions);
7211                 }
7212         }
7213
7214         TransientDetector::cleanup_transients (positions, _session->frame_rate(), 3.0);
7215
7216         if (forward) {
7217                 AnalysisFeatureList::iterator x;
7218
7219                 for (x = positions.begin(); x != positions.end(); ++x) {
7220                         if ((*x) > pos) {
7221                                 break;
7222                         }
7223                 }
7224
7225                 if (x != positions.end ()) {
7226                         _session->request_locate (*x);
7227                 }
7228
7229         } else {
7230                 AnalysisFeatureList::reverse_iterator x;
7231
7232                 for (x = positions.rbegin(); x != positions.rend(); ++x) {
7233                         if ((*x) < pos) {
7234                                 break;
7235                         }
7236                 }
7237
7238                 if (x != positions.rend ()) {
7239                         _session->request_locate (*x);
7240                 }
7241         }
7242 }
7243
7244 void
7245 Editor::playhead_forward_to_grid ()
7246 {
7247         if (!_session) {
7248                 return;
7249         }
7250
7251         MusicFrame pos (playhead_cursor->current_frame (), 0);
7252
7253         if (pos.frame < max_framepos - 1) {
7254                 pos.frame += 2;
7255                 snap_to_internal (pos, RoundUpAlways, false);
7256                 _session->request_locate (pos.frame);
7257         }
7258 }
7259
7260
7261 void
7262 Editor::playhead_backward_to_grid ()
7263 {
7264         if (!_session) {
7265                 return;
7266         }
7267
7268         MusicFrame pos  (playhead_cursor->current_frame (), 0);
7269
7270         if (pos.frame > 2) {
7271                 pos.frame -= 2;
7272                 snap_to_internal (pos, RoundDownAlways, false);
7273                 _session->request_locate (pos.frame);
7274         }
7275 }
7276
7277 void
7278 Editor::set_track_height (Height h)
7279 {
7280         TrackSelection& ts (selection->tracks);
7281
7282         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
7283                 (*x)->set_height_enum (h);
7284         }
7285 }
7286
7287 void
7288 Editor::toggle_tracks_active ()
7289 {
7290         TrackSelection& ts (selection->tracks);
7291         bool first = true;
7292         bool target = false;
7293
7294         if (ts.empty()) {
7295                 return;
7296         }
7297
7298         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
7299                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*x);
7300
7301                 if (rtv) {
7302                         if (first) {
7303                                 target = !rtv->_route->active();
7304                                 first = false;
7305                         }
7306                         rtv->_route->set_active (target, this);
7307                 }
7308         }
7309 }
7310
7311 void
7312 Editor::remove_tracks ()
7313 {
7314         /* this will delete GUI objects that may be the subject of an event
7315            handler in which this method is called. Defer actual deletion to the
7316            next idle callback, when all event handling is finished.
7317         */
7318         Glib::signal_idle().connect (sigc::mem_fun (*this, &Editor::idle_remove_tracks));
7319 }
7320
7321 bool
7322 Editor::idle_remove_tracks ()
7323 {
7324         Session::StateProtector sp (_session);
7325         _remove_tracks ();
7326         return false; /* do not call again */
7327 }
7328
7329 void
7330 Editor::_remove_tracks ()
7331 {
7332         TrackSelection& ts (selection->tracks);
7333
7334         if (ts.empty()) {
7335                 return;
7336         }
7337
7338         vector<string> choices;
7339         string prompt;
7340         int ntracks = 0;
7341         int nbusses = 0;
7342         const char* trackstr;
7343         const char* busstr;
7344         vector<boost::shared_ptr<Route> > routes;
7345         bool special_bus = false;
7346
7347         for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
7348                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*x);
7349                 if (!rtv) {
7350                         continue;
7351                 }
7352                 if (rtv->is_track()) {
7353                         ntracks++;
7354                 } else {
7355                         nbusses++;
7356                 }
7357                 routes.push_back (rtv->_route);
7358
7359                 if (rtv->route()->is_master() || rtv->route()->is_monitor()) {
7360                         special_bus = true;
7361                 }
7362         }
7363
7364         if (special_bus && !Config->get_allow_special_bus_removal()) {
7365                 MessageDialog msg (_("That would be bad news ...."),
7366                                    false,
7367                                    Gtk::MESSAGE_INFO,
7368                                    Gtk::BUTTONS_OK);
7369                 msg.set_secondary_text (string_compose (_(
7370                                                                 "Removing the master or monitor bus is such a bad idea\n\
7371 that %1 is not going to allow it.\n\
7372 \n\
7373 If you really want to do this sort of thing\n\
7374 edit your ardour.rc file to set the\n\
7375 \"allow-special-bus-removal\" option to be \"yes\""), PROGRAM_NAME));
7376
7377                 msg.present ();
7378                 msg.run ();
7379                 return;
7380         }
7381
7382         if (ntracks + nbusses == 0) {
7383                 return;
7384         }
7385
7386         trackstr = P_("track", "tracks", ntracks);
7387         busstr = P_("bus", "busses", nbusses);
7388
7389         if (ntracks) {
7390                 if (nbusses) {
7391                         prompt  = string_compose (_("Do you really want to remove %1 %2 and %3 %4?\n"
7392                                                     "(You may also lose the playlists associated with the %2)\n\n"
7393                                                     "This action cannot be undone, and the session file will be overwritten!"),
7394                                                   ntracks, trackstr, nbusses, busstr);
7395                 } else {
7396                         prompt  = string_compose (_("Do you really want to remove %1 %2?\n"
7397                                                     "(You may also lose the playlists associated with the %2)\n\n"
7398                                                     "This action cannot be undone, and the session file will be overwritten!"),
7399                                                   ntracks, trackstr);
7400                 }
7401         } else if (nbusses) {
7402                 prompt  = string_compose (_("Do you really want to remove %1 %2?\n\n"
7403                                             "This action cannot be undone, and the session file will be overwritten"),
7404                                           nbusses, busstr);
7405         }
7406
7407         choices.push_back (_("No, do nothing."));
7408         if (ntracks + nbusses > 1) {
7409                 choices.push_back (_("Yes, remove them."));
7410         } else {
7411                 choices.push_back (_("Yes, remove it."));
7412         }
7413
7414         string title;
7415         if (ntracks) {
7416                 title = string_compose (_("Remove %1"), trackstr);
7417         } else {
7418                 title = string_compose (_("Remove %1"), busstr);
7419         }
7420
7421         Choice prompter (title, prompt, choices);
7422
7423         if (prompter.run () != 1) {
7424                 return;
7425         }
7426
7427         if (current_mixer_strip && routes.size () > 1 && std::find (routes.begin(), routes.end(), current_mixer_strip->route()) != routes.end ()) {
7428                 /* Route deletion calls Editor::timeaxisview_deleted() iteratively (for each deleted
7429                  * route). If the deleted route is currently displayed in the Editor-Mixer (highly
7430                  * likely because deletion requires selection) this will call
7431                  * Editor::set_selected_mixer_strip () which is expensive ( MixerStrip::set_route() ).
7432                  * It's likewise likely that the route that has just been displayed in the
7433                  * Editor-Mixer will be next in line for deletion.
7434                  *
7435                  * So simply switch to the master-bus (if present)
7436                  */
7437                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
7438                         if ((*i)->stripable ()->is_master ()) {
7439                                 set_selected_mixer_strip (*(*i));
7440                                 break;
7441                         }
7442                 }
7443         }
7444
7445         {
7446                 PresentationInfo::ChangeSuspender cs;
7447                 DisplaySuspender ds;
7448
7449                 boost::shared_ptr<RouteList> rl (new RouteList);
7450                 for (vector<boost::shared_ptr<Route> >::iterator x = routes.begin(); x != routes.end(); ++x) {
7451                         rl->push_back (*x);
7452                 }
7453                 _session->remove_routes (rl);
7454         }
7455         /* TrackSelection and RouteList leave scope,
7456          * destructors are called,
7457          * diskstream drops references, save_state is called (again for every track)
7458          */
7459 }
7460
7461 void
7462 Editor::do_insert_time ()
7463 {
7464         if (selection->tracks.empty()) {
7465                 return;
7466         }
7467
7468         InsertRemoveTimeDialog d (*this);
7469         int response = d.run ();
7470
7471         if (response != RESPONSE_OK) {
7472                 return;
7473         }
7474
7475         if (d.distance() == 0) {
7476                 return;
7477         }
7478
7479         insert_time (
7480                 d.position(),
7481                 d.distance(),
7482                 d.intersected_region_action (),
7483                 d.all_playlists(),
7484                 d.move_glued(),
7485                 d.move_markers(),
7486                 d.move_glued_markers(),
7487                 d.move_locked_markers(),
7488                 d.move_tempos()
7489                 );
7490 }
7491
7492 void
7493 Editor::insert_time (
7494         framepos_t pos, framecnt_t frames, InsertTimeOption opt,
7495         bool all_playlists, bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too
7496         )
7497 {
7498
7499         if (Config->get_edit_mode() == Lock) {
7500                 return;
7501         }
7502         bool in_command = false;
7503
7504         TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
7505
7506         for (TrackViewList::iterator x = ts.begin(); x != ts.end(); ++x) {
7507
7508                 /* regions */
7509
7510                 /* don't operate on any playlist more than once, which could
7511                  * happen if "all playlists" is enabled, but there is more
7512                  * than 1 track using playlists "from" a given track.
7513                  */
7514
7515                 set<boost::shared_ptr<Playlist> > pl;
7516
7517                 if (all_playlists) {
7518                         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*x);
7519                         if (rtav && rtav->track ()) {
7520                                 vector<boost::shared_ptr<Playlist> > all = _session->playlists->playlists_for_track (rtav->track ());
7521                                 for (vector<boost::shared_ptr<Playlist> >::iterator p = all.begin(); p != all.end(); ++p) {
7522                                         pl.insert (*p);
7523                                 }
7524                         }
7525                 } else {
7526                         if ((*x)->playlist ()) {
7527                                 pl.insert ((*x)->playlist ());
7528                         }
7529                 }
7530
7531                 for (set<boost::shared_ptr<Playlist> >::iterator i = pl.begin(); i != pl.end(); ++i) {
7532
7533                         (*i)->clear_changes ();
7534                         (*i)->clear_owned_changes ();
7535
7536                         if (!in_command) {
7537                                 begin_reversible_command (_("insert time"));
7538                                 in_command = true;
7539                         }
7540
7541                         if (opt == SplitIntersected) {
7542                                 /* non musical split */
7543                                 (*i)->split (MusicFrame (pos, 0));
7544                         }
7545
7546                         (*i)->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
7547
7548                         vector<Command*> cmds;
7549                         (*i)->rdiff (cmds);
7550                         _session->add_commands (cmds);
7551
7552                         _session->add_command (new StatefulDiffCommand (*i));
7553                 }
7554
7555                 /* automation */
7556                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*x);
7557                 if (rtav) {
7558                         if (!in_command) {
7559                                 begin_reversible_command (_("insert time"));
7560                                 in_command = true;
7561                         }
7562                         rtav->route ()->shift (pos, frames);
7563                 }
7564         }
7565
7566         /* markers */
7567         if (markers_too) {
7568                 bool moved = false;
7569                 const int32_t divisions = get_grid_music_divisions (0);
7570                 XMLNode& before (_session->locations()->get_state());
7571                 Locations::LocationList copy (_session->locations()->list());
7572
7573                 for (Locations::LocationList::iterator i = copy.begin(); i != copy.end(); ++i) {
7574
7575                         Locations::LocationList::const_iterator tmp;
7576
7577                         if ((*i)->position_lock_style() == AudioTime || glued_markers_too) {
7578                                 bool const was_locked = (*i)->locked ();
7579                                 if (locked_markers_too) {
7580                                         (*i)->unlock ();
7581                                 }
7582
7583                                 if ((*i)->start() >= pos) {
7584                                         // move end first, in case we're moving by more than the length of the range
7585                                         if (!(*i)->is_mark()) {
7586                                                 (*i)->set_end ((*i)->end() + frames, false, true, divisions);
7587                                         }
7588                                         (*i)->set_start ((*i)->start() + frames, false, true, divisions);
7589                                         moved = true;
7590                                 }
7591
7592                                 if (was_locked) {
7593                                         (*i)->lock ();
7594                                 }
7595                         }
7596                 }
7597
7598                 if (moved) {
7599                         if (!in_command) {
7600                                 begin_reversible_command (_("insert time"));
7601                                 in_command = true;
7602                         }
7603                         XMLNode& after (_session->locations()->get_state());
7604                         _session->add_command (new MementoCommand<Locations>(*_session->locations(), &before, &after));
7605                 }
7606         }
7607
7608         if (tempo_too) {
7609                 if (!in_command) {
7610                         begin_reversible_command (_("insert time"));
7611                         in_command = true;
7612                 }
7613                 XMLNode& before (_session->tempo_map().get_state());
7614                 _session->tempo_map().insert_time (pos, frames);
7615                 XMLNode& after (_session->tempo_map().get_state());
7616                 _session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
7617         }
7618
7619         if (in_command) {
7620                 commit_reversible_command ();
7621         }
7622 }
7623
7624 void
7625 Editor::do_remove_time ()
7626 {
7627         if (selection->tracks.empty()) {
7628                 return;
7629         }
7630
7631         InsertRemoveTimeDialog d (*this, true);
7632
7633         int response = d.run ();
7634
7635         if (response != RESPONSE_OK) {
7636                 return;
7637         }
7638
7639         framecnt_t distance = d.distance();
7640
7641         if (distance == 0) {
7642                 return;
7643         }
7644
7645         remove_time (
7646                 d.position(),
7647                 distance,
7648                 SplitIntersected,
7649                 d.move_glued(),
7650                 d.move_markers(),
7651                 d.move_glued_markers(),
7652                 d.move_locked_markers(),
7653                 d.move_tempos()
7654         );
7655 }
7656
7657 void
7658 Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
7659                      bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too)
7660 {
7661         if (Config->get_edit_mode() == Lock) {
7662                 error << (_("Cannot insert or delete time when in Lock edit.")) << endmsg;
7663                 return;
7664         }
7665         bool in_command = false;
7666
7667         for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
7668                 /* regions */
7669                 boost::shared_ptr<Playlist> pl = (*x)->playlist();
7670
7671                 if (pl) {
7672
7673                         XMLNode &before = pl->get_state();
7674
7675                         if (!in_command) {
7676                                 begin_reversible_command (_("remove time"));
7677                                 in_command = true;
7678                         }
7679
7680                         std::list<AudioRange> rl;
7681                         AudioRange ar(pos, pos+frames, 0);
7682                         rl.push_back(ar);
7683                         pl->cut (rl);
7684                         pl->shift (pos, -frames, true, ignore_music_glue);
7685
7686                         XMLNode &after = pl->get_state();
7687
7688                         _session->add_command (new MementoCommand<Playlist> (*pl, &before, &after));
7689                 }
7690
7691                 /* automation */
7692                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*x);
7693                 if (rtav) {
7694                         if (!in_command) {
7695                                 begin_reversible_command (_("remove time"));
7696                                 in_command = true;
7697                         }
7698                         rtav->route ()->shift (pos, -frames);
7699                 }
7700         }
7701
7702         const int32_t divisions = get_grid_music_divisions (0);
7703         std::list<Location*> loc_kill_list;
7704
7705         /* markers */
7706         if (markers_too) {
7707                 bool moved = false;
7708                 XMLNode& before (_session->locations()->get_state());
7709                 Locations::LocationList copy (_session->locations()->list());
7710
7711                 for (Locations::LocationList::iterator i = copy.begin(); i != copy.end(); ++i) {
7712                         if ((*i)->position_lock_style() == AudioTime || glued_markers_too) {
7713
7714                                 bool const was_locked = (*i)->locked ();
7715                                 if (locked_markers_too) {
7716                                         (*i)->unlock ();
7717                                 }
7718
7719                                 if (!(*i)->is_mark()) {  // it's a range;  have to handle both start and end
7720                                         if ((*i)->end() >= pos
7721                                         && (*i)->end() < pos+frames
7722                                         && (*i)->start() >= pos
7723                                         && (*i)->end() < pos+frames) {  // range is completely enclosed;  kill it
7724                                                 moved = true;
7725                                                 loc_kill_list.push_back(*i);
7726                                         } else {  // only start or end is included, try to do the right thing
7727                                                 // move start before moving end, to avoid trying to move the end to before the start
7728                                                 // if we're removing more time than the length of the range
7729                                                 if ((*i)->start() >= pos && (*i)->start() < pos+frames) {
7730                                                         // start is within cut
7731                                                         (*i)->set_start (pos, false, true,divisions);  // bring the start marker to the beginning of the cut
7732                                                         moved = true;
7733                                                 } else if ((*i)->start() >= pos+frames) {
7734                                                         // start (and thus entire range) lies beyond end of cut
7735                                                         (*i)->set_start ((*i)->start() - frames, false, true, divisions); // slip the start marker back
7736                                                         moved = true;
7737                                                 }
7738                                                 if ((*i)->end() >= pos && (*i)->end() < pos+frames) {
7739                                                         // end is inside cut
7740                                                         (*i)->set_end (pos, false, true, divisions);  // bring the end to the cut
7741                                                         moved = true;
7742                                                 } else if ((*i)->end() >= pos+frames) {
7743                                                         // end is beyond end of cut
7744                                                         (*i)->set_end ((*i)->end() - frames, false, true, divisions); // slip the end marker back
7745                                                         moved = true;
7746                                                 }
7747
7748                                         }
7749                                 } else if ((*i)->start() >= pos && (*i)->start() < pos+frames ) {
7750                                         loc_kill_list.push_back(*i);
7751                                         moved = true;
7752                                 } else if ((*i)->start() >= pos) {
7753                                         (*i)->set_start ((*i)->start() -frames, false, true, divisions);
7754                                         moved = true;
7755                                 }
7756
7757                                 if (was_locked) {
7758                                         (*i)->lock ();
7759                                 }
7760                         }
7761                 }
7762
7763                 for (list<Location*>::iterator i = loc_kill_list.begin(); i != loc_kill_list.end(); ++i) {
7764                         _session->locations()->remove( *i );
7765                 }
7766
7767                 if (moved) {
7768                         if (!in_command) {
7769                                 begin_reversible_command (_("remove time"));
7770                                 in_command = true;
7771                         }
7772                         XMLNode& after (_session->locations()->get_state());
7773                         _session->add_command (new MementoCommand<Locations>(*_session->locations(), &before, &after));
7774                 }
7775         }
7776
7777         if (tempo_too) {
7778                 XMLNode& before (_session->tempo_map().get_state());
7779
7780                 if (_session->tempo_map().remove_time (pos, frames) ) {
7781                         if (!in_command) {
7782                                 begin_reversible_command (_("remove time"));
7783                                 in_command = true;
7784                         }
7785                         XMLNode& after (_session->tempo_map().get_state());
7786                         _session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
7787                 }
7788         }
7789
7790         if (in_command) {
7791                 commit_reversible_command ();
7792         }
7793 }
7794
7795 void
7796 Editor::fit_selection ()
7797 {
7798         if (!selection->tracks.empty()) {
7799                 fit_tracks (selection->tracks);
7800         } else {
7801                 TrackViewList tvl;
7802
7803                 /* no selected tracks - use tracks with selected regions */
7804
7805                 if (!selection->regions.empty()) {
7806                         for (RegionSelection::iterator r = selection->regions.begin(); r != selection->regions.end(); ++r) {
7807                                 tvl.push_back (&(*r)->get_time_axis_view ());
7808                         }
7809
7810                         if (!tvl.empty()) {
7811                                 fit_tracks (tvl);
7812                         }
7813                 } else if (internal_editing()) {
7814                         /* no selected tracks, or regions, but in internal edit mode, so follow the mouse and use
7815                            the entered track
7816                         */
7817                         if (entered_track) {
7818                                 tvl.push_back (entered_track);
7819                                 fit_tracks (tvl);
7820                         }
7821                 }
7822         }
7823
7824 }
7825
7826 void
7827 Editor::fit_tracks (TrackViewList & tracks)
7828 {
7829         if (tracks.empty()) {
7830                 return;
7831         }
7832
7833         uint32_t child_heights = 0;
7834         int visible_tracks = 0;
7835
7836         for (TrackSelection::iterator t = tracks.begin(); t != tracks.end(); ++t) {
7837
7838                 if (!(*t)->marked_for_display()) {
7839                         continue;
7840                 }
7841
7842                 child_heights += (*t)->effective_height() - (*t)->current_height();
7843                 ++visible_tracks;
7844         }
7845
7846         /* compute the per-track height from:
7847
7848            total canvas visible height -
7849                  height that will be taken by visible children of selected
7850                  tracks - height of the ruler/hscroll area
7851         */
7852         uint32_t h = (uint32_t) floor ((trackviews_height() - child_heights) / visible_tracks);
7853         double first_y_pos = DBL_MAX;
7854
7855         if (h < TimeAxisView::preset_height (HeightSmall)) {
7856                 MessageDialog msg (_("There are too many tracks to fit in the current window"));
7857                 /* too small to be displayed */
7858                 return;
7859         }
7860
7861         undo_visual_stack.push_back (current_visual_state (true));
7862         PBD::Unwinder<bool> nsv (no_save_visual, true);
7863
7864         /* build a list of all tracks, including children */
7865
7866         TrackViewList all;
7867         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
7868                 all.push_back (*i);
7869                 TimeAxisView::Children c = (*i)->get_child_list ();
7870                 for (TimeAxisView::Children::iterator j = c.begin(); j != c.end(); ++j) {
7871                         all.push_back (j->get());
7872                 }
7873         }
7874
7875
7876         // find selection range.
7877         // if someone knows how to user TrackViewList::iterator for this
7878         // I'm all ears.
7879         int selected_top = -1;
7880         int selected_bottom = -1;
7881         int i = 0;
7882         for (TrackViewList::iterator t = all.begin(); t != all.end(); ++t, ++i) {
7883                 if ((*t)->marked_for_display ()) {
7884                         if (tracks.contains(*t)) {
7885                                 if (selected_top == -1) {
7886                                         selected_top = i;
7887                                 }
7888                                 selected_bottom = i;
7889                         }
7890                 }
7891         }
7892
7893         i = 0;
7894         for (TrackViewList::iterator t = all.begin(); t != all.end(); ++t, ++i) {
7895                 if ((*t)->marked_for_display ()) {
7896                         if (tracks.contains(*t)) {
7897                                 (*t)->set_height (h);
7898                                 first_y_pos = std::min ((*t)->y_position (), first_y_pos);
7899                         } else {
7900                                 if (i > selected_top && i < selected_bottom) {
7901                                         hide_track_in_display (*t);
7902                                 }
7903                         }
7904                 }
7905         }
7906
7907         /*
7908            set the controls_layout height now, because waiting for its size
7909            request signal handler will cause the vertical adjustment setting to fail
7910         */
7911
7912         controls_layout.property_height () = _full_canvas_height;
7913         vertical_adjustment.set_value (first_y_pos);
7914
7915         redo_visual_stack.push_back (current_visual_state (true));
7916
7917         visible_tracks_selector.set_text (_("Sel"));
7918 }
7919
7920 void
7921 Editor::save_visual_state (uint32_t n)
7922 {
7923         while (visual_states.size() <= n) {
7924                 visual_states.push_back (0);
7925         }
7926
7927         if (visual_states[n] != 0) {
7928                 delete visual_states[n];
7929         }
7930
7931         visual_states[n] = current_visual_state (true);
7932         gdk_beep ();
7933 }
7934
7935 void
7936 Editor::goto_visual_state (uint32_t n)
7937 {
7938         if (visual_states.size() <= n) {
7939                 return;
7940         }
7941
7942         if (visual_states[n] == 0) {
7943                 return;
7944         }
7945
7946         use_visual_state (*visual_states[n]);
7947 }
7948
7949 void
7950 Editor::start_visual_state_op (uint32_t n)
7951 {
7952         save_visual_state (n);
7953
7954         PopUp* pup = new PopUp (WIN_POS_MOUSE, 1000, true);
7955         char buf[32];
7956         snprintf (buf, sizeof (buf), _("Saved view %u"), n+1);
7957         pup->set_text (buf);
7958         pup->touch();
7959 }
7960
7961 void
7962 Editor::cancel_visual_state_op (uint32_t n)
7963 {
7964         goto_visual_state (n);
7965 }
7966
7967 void
7968 Editor::toggle_region_mute ()
7969 {
7970         if (_ignore_region_action) {
7971                 return;
7972         }
7973
7974         RegionSelection rs = get_regions_from_selection_and_entered ();
7975
7976         if (rs.empty ()) {
7977                 return;
7978         }
7979
7980         if (rs.size() > 1) {
7981                 begin_reversible_command (_("mute regions"));
7982         } else {
7983                 begin_reversible_command (_("mute region"));
7984         }
7985
7986         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
7987
7988                 (*i)->region()->playlist()->clear_changes ();
7989                 (*i)->region()->set_muted (!(*i)->region()->muted ());
7990                 _session->add_command (new StatefulDiffCommand ((*i)->region()));
7991
7992         }
7993
7994         commit_reversible_command ();
7995 }
7996
7997 void
7998 Editor::combine_regions ()
7999 {
8000         /* foreach track with selected regions, take all selected regions
8001            and join them into a new region containing the subregions (as a
8002            playlist)
8003         */
8004
8005         typedef set<RouteTimeAxisView*> RTVS;
8006         RTVS tracks;
8007
8008         if (selection->regions.empty()) {
8009                 return;
8010         }
8011
8012         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
8013                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
8014
8015                 if (rtv) {
8016                         tracks.insert (rtv);
8017                 }
8018         }
8019
8020         begin_reversible_command (_("combine regions"));
8021
8022         vector<RegionView*> new_selection;
8023
8024         for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
8025                 RegionView* rv;
8026
8027                 if ((rv = (*i)->combine_regions ()) != 0) {
8028                         new_selection.push_back (rv);
8029                 }
8030         }
8031
8032         selection->clear_regions ();
8033         for (vector<RegionView*>::iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
8034                 selection->add (*i);
8035         }
8036
8037         commit_reversible_command ();
8038 }
8039
8040 void
8041 Editor::uncombine_regions ()
8042 {
8043         typedef set<RouteTimeAxisView*> RTVS;
8044         RTVS tracks;
8045
8046         if (selection->regions.empty()) {
8047                 return;
8048         }
8049
8050         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
8051                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&(*i)->get_time_axis_view());
8052
8053                 if (rtv) {
8054                         tracks.insert (rtv);
8055                 }
8056         }
8057
8058         begin_reversible_command (_("uncombine regions"));
8059
8060         for (RTVS::iterator i = tracks.begin(); i != tracks.end(); ++i) {
8061                 (*i)->uncombine_regions ();
8062         }
8063
8064         commit_reversible_command ();
8065 }
8066
8067 void
8068 Editor::toggle_midi_input_active (bool flip_others)
8069 {
8070         bool onoff = false;
8071         boost::shared_ptr<RouteList> rl (new RouteList);
8072
8073         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
8074                 RouteTimeAxisView *rtav = dynamic_cast<RouteTimeAxisView *>(*i);
8075
8076                 if (!rtav) {
8077                         continue;
8078                 }
8079
8080                 boost::shared_ptr<MidiTrack> mt = rtav->midi_track();
8081
8082                 if (mt) {
8083                         rl->push_back (rtav->route());
8084                         onoff = !mt->input_active();
8085                 }
8086         }
8087
8088         _session->set_exclusive_input_active (rl, onoff, flip_others);
8089 }
8090
8091 static bool ok_fine (GdkEventAny*) { return true; }
8092
8093 void
8094 Editor::lock ()
8095 {
8096         if (!lock_dialog) {
8097                 lock_dialog = new Gtk::Dialog (string_compose (_("%1: Locked"), PROGRAM_NAME), true);
8098
8099                 Gtk::Image* padlock = manage (new Gtk::Image (ARDOUR_UI_UTILS::get_icon ("padlock_closed")));
8100                 lock_dialog->get_vbox()->pack_start (*padlock);
8101                 lock_dialog->signal_delete_event ().connect (sigc::ptr_fun (ok_fine));
8102
8103                 ArdourButton* b = manage (new ArdourButton);
8104                 b->set_name ("lock button");
8105                 b->set_text (_("Click to unlock"));
8106                 b->signal_clicked.connect (sigc::mem_fun (*this, &Editor::unlock));
8107                 lock_dialog->get_vbox()->pack_start (*b);
8108
8109                 lock_dialog->get_vbox()->show_all ();
8110                 lock_dialog->set_size_request (200, 200);
8111         }
8112
8113         delete _main_menu_disabler;
8114         _main_menu_disabler = new MainMenuDisabler;
8115
8116         lock_dialog->present ();
8117
8118         lock_dialog->get_window()->set_decorations (Gdk::WMDecoration (0));
8119 }
8120
8121 void
8122 Editor::unlock ()
8123 {
8124         lock_dialog->hide ();
8125
8126         delete _main_menu_disabler;
8127         _main_menu_disabler = 0;
8128
8129         if (UIConfiguration::instance().get_lock_gui_after_seconds()) {
8130                 start_lock_event_timing ();
8131         }
8132 }
8133
8134 void
8135 Editor::bring_in_callback (Gtk::Label* label, uint32_t n, uint32_t total, string name)
8136 {
8137         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&Editor::update_bring_in_message, this, label, n, total, name));
8138 }
8139
8140 void
8141 Editor::update_bring_in_message (Gtk::Label* label, uint32_t n, uint32_t total, string name)
8142 {
8143         Timers::TimerSuspender t;
8144         label->set_text (string_compose ("Copying %1, %2 of %3", name, n, total));
8145         Gtkmm2ext::UI::instance()->flush_pending (1);
8146 }
8147
8148 void
8149 Editor::bring_all_sources_into_session ()
8150 {
8151         if (!_session) {
8152                 return;
8153         }
8154
8155         Gtk::Label msg;
8156         ArdourDialog w (_("Moving embedded files into session folder"));
8157         w.get_vbox()->pack_start (msg);
8158         w.present ();
8159
8160         /* flush all pending GUI events because we're about to start copying
8161          * files
8162          */
8163
8164         Timers::TimerSuspender t;
8165         Gtkmm2ext::UI::instance()->flush_pending (3);
8166
8167         cerr << " Do it\n";
8168
8169         _session->bring_all_sources_into_session (boost::bind (&Editor::bring_in_callback, this, &msg, _1, _2, _3));
8170 }