gtk2_ardour/editor_ops.cc

   1 /*
   2     Copyright (C) 2000-2004 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /* Note: public Editor methods are documented in public_editor.h */
  21
  22 #include <unistd.h>
  23
  24 #include <cstdlib>
  25 #include <cmath>
  26 #include <string>
  27 #include <map>
  28
  29 #include <pbd/error.h>
  30 #include <pbd/basename.h>
  31 #include <pbd/pthread_utils.h>
  32 #include <pbd/memento_command.h>
  33 #include <pbd/whitespace.h>
  34
  35 #include <gtkmm2ext/utils.h>
  36 #include <gtkmm2ext/choice.h>
  37 #include <gtkmm2ext/window_title.h>
  38
  39 #include <ardour/audioengine.h>
  40 #include <ardour/session.h>
  41 #include <ardour/audioplaylist.h>
  42 #include <ardour/audioregion.h>
  43 #include <ardour/audio_diskstream.h>
  44 #include <ardour/utils.h>
  45 #include <ardour/location.h>
  46 #include <ardour/named_selection.h>
  47 #include <ardour/audio_track.h>
  48 #include <ardour/audiofilesource.h>
  49 #include <ardour/audioplaylist.h>
  50 #include <ardour/region_factory.h>
  51 #include <ardour/playlist_factory.h>
  52 #include <ardour/reverse.h>
  53 #include <ardour/transient_detector.h>
  54 #include <ardour/dB.h>
  55 #include <ardour/quantize.h>
  56
  57 #include "ardour_ui.h"
  58 #include "editor.h"
  59 #include "time_axis_view.h"
  60 #include "route_time_axis.h"
  61 #include "audio_time_axis.h"
  62 #include "automation_time_axis.h"
  63 #include "streamview.h"
  64 #include "audio_region_view.h"
  65 #include "midi_region_view.h"
  66 #include "rgb_macros.h"
  67 #include "selection_templates.h"
  68 #include "selection.h"
  69 #include "editing.h"
  70 #include "gtk-custom-hruler.h"
  71 #include "gui_thread.h"
  72 #include "keyboard.h"
  73 #include "utils.h"
  74
  75 #include "i18n.h"
  76
  77 using namespace std;
  78 using namespace ARDOUR;
  79 using namespace PBD;
  80 using namespace sigc;
  81 using namespace Gtk;
  82 using namespace Gtkmm2ext;
  83 using namespace Editing;
  84
  85 /***********************************************************************
  86   Editor operations
  87  ***********************************************************************/
  88
  89 void
  90 Editor::undo (uint32_t n)
  91 {
  92         if (session) {
  93                 session->undo (n);
  94         }
  95 }
  96
  97 void
  98 Editor::redo (uint32_t n)
  99 {
 100         if (session) {
 101                 session->redo (n);
 102         }
 103 }
 104
 105 void
 106 Editor::split_region ()
 107 {
 108         split_region_at (get_preferred_edit_position());
 109 }
 110
 111 void
 112 Editor::split_region_at (nframes_t where)
 113 {
 114         RegionSelection rs;
 115
 116         get_regions_for_action (rs);
 117         split_regions_at (where, selection->regions);
 118 }
 119
 120 void
 121 Editor::split_regions_at (nframes_t where, RegionSelection& regions)
 122 {
 123         list <boost::shared_ptr<Playlist > > used_playlists;
 124
 125         if (regions.empty()) {
 126                 return;
 127         }
 128
 129         begin_reversible_command (_("split"));
 130
 131         // if splitting a single region, and snap-to is using
 132         // region boundaries, don't pay attention to them
 133
 134         if (regions.size() == 1) {
 135                 switch (snap_type) {
 136                 case SnapToRegionStart:
 137                 case SnapToRegionSync:
 138                 case SnapToRegionEnd:
 139                         break;
 140                 default:
 141                         snap_to (where);
 142                 }
 143         } else {
 144                 snap_to (where);
 145         }
 146
 147         for (RegionSelection::iterator a = regions.begin(); a != regions.end(); ) {
 148
 149                 RegionSelection::iterator tmp;
 150
 151                 /* XXX this test needs to be more complicated, to make sure we really
 152                    have something to split.
 153                 */
 154
 155                 if (!(*a)->region()->covers (where)) {
 156                         ++a;
 157                         continue;
 158                 }
 159
 160                 tmp = a;
 161                 ++tmp;
 162
 163                 boost::shared_ptr<Playlist> pl = (*a)->region()->playlist();
 164
 165                 if (! pl->frozen()) {
 166                         /* we haven't seen this playlist before */
 167
 168                         /* remember used playlists so we can thaw them later */
 169                         used_playlists.push_back(pl);
 170                         pl->freeze();
 171                 }
 172
 173                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*a);
 174
 175                 if (arv) {
 176                         _new_regionviews_show_envelope = arv->envelope_visible();
 177                 }
 178
 179                 if (pl) {
 180                         XMLNode &before = pl->get_state();
 181                         pl->split_region ((*a)->region(), where);
 182                         XMLNode &after = pl->get_state();
 183                         session->add_command(new MementoCommand<Playlist>(*pl, &before, &after));
 184                 }
 185
 186                 a = tmp;
 187         }
 188         while (used_playlists.size() > 0) {
 189
 190                 list <boost::shared_ptr<Playlist > >::iterator i = used_playlists.begin();
 191                 (*i)->thaw();
 192                 used_playlists.pop_front();
 193         }
 194         commit_reversible_command ();
 195         _new_regionviews_show_envelope = false;
 196 }
 197
 198
 199 /** Remove `clicked_regionview' */
 200 void
 201 Editor::remove_clicked_region ()
 202 {
 203         if (clicked_routeview == 0 || clicked_regionview == 0) {
 204                 return;
 205         }
 206
 207         boost::shared_ptr<Playlist> playlist = clicked_routeview->playlist();
 208
 209         begin_reversible_command (_("remove region"));
 210         XMLNode &before = playlist->get_state();
 211         playlist->remove_region (clicked_regionview->region());
 212         XMLNode &after = playlist->get_state();
 213         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 214         commit_reversible_command ();
 215 }
 216
 217
 218 /** Remove the selected regions */
 219 void
 220 Editor::remove_selected_regions ()
 221 {
 222         if (selection->regions.empty()) {
 223                 return;
 224         }
 225
 226         /* XXX: should be called remove regions if we're removing more than one */
 227         begin_reversible_command (_("remove region"));
 228
 229
 230         while (!selection->regions.empty()) {
 231                 boost::shared_ptr<Region> region = selection->regions.front()->region ();
 232                 boost::shared_ptr<Playlist> playlist = region->playlist ();
 233
 234                 XMLNode &before = playlist->get_state();
 235                 playlist->remove_region (region);
 236                 XMLNode &after = playlist->get_state();
 237                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
 238         }
 239
 240         commit_reversible_command ();
 241 }
 242
 243 boost::shared_ptr<Region>
 244 Editor::select_region_for_operation (int dir, TimeAxisView **tv)
 245 {
 246         RegionView* rv;
 247         boost::shared_ptr<Region> region;
 248         nframes_t start = 0;
 249
 250         if (selection->time.start () == selection->time.end_frame ()) {
 251
 252                 /* no current selection-> is there a selected regionview? */
 253
 254                 if (selection->regions.empty()) {
 255                         return region;
 256                 }
 257
 258         }
 259
 260         if (!selection->regions.empty()) {
 261
 262                 rv = *(selection->regions.begin());
 263                 (*tv) = &rv->get_time_axis_view();
 264                 region = rv->region();
 265
 266         } else if (!selection->tracks.empty()) {
 267
 268                 (*tv) = selection->tracks.front();
 269
 270                 RouteTimeAxisView* rtv;
 271
 272                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*tv)) != 0) {
 273                         boost::shared_ptr<Playlist> pl;
 274
 275                         if ((pl = rtv->playlist()) == 0) {
 276                                 return region;
 277                         }
 278
 279                         region = pl->top_region_at (start);
 280                 }
 281         }
 282
 283         return region;
 284 }
 285
 286 void
 287 Editor::extend_selection_to_end_of_region (bool next)
 288 {
 289         TimeAxisView *tv;
 290         boost::shared_ptr<Region> region;
 291         nframes_t start;
 292
 293         if ((region = select_region_for_operation (next ? 1 : 0, &tv)) == 0) {
 294                 return;
 295         }
 296
 297         if (region && selection->time.start () == selection->time.end_frame ()) {
 298                 start = region->position();
 299         } else {
 300                 start = selection->time.start ();
 301         }
 302
 303         /* Try to leave the selection with the same route if possible */
 304
 305         if ((tv = selection->time.track) == 0) {
 306                 return;
 307         }
 308
 309         begin_reversible_command (_("extend selection"));
 310         selection->set (tv, start, region->position() + region->length());
 311         commit_reversible_command ();
 312 }
 313
 314 void
 315 Editor::extend_selection_to_start_of_region (bool previous)
 316 {
 317         TimeAxisView *tv;
 318         boost::shared_ptr<Region> region;
 319         nframes_t end;
 320
 321         if ((region = select_region_for_operation (previous ? -1 : 0, &tv)) == 0) {
 322                 return;
 323         }
 324
 325         if (region && selection->time.start () == selection->time.end_frame ()) {
 326                 end = region->position() + region->length();
 327         } else {
 328                 end = selection->time.end_frame ();
 329         }
 330
 331         /* Try to leave the selection with the same route if possible */
 332
 333         if ((tv = selection->time.track) == 0) {
 334                 return;
 335         }
 336
 337         begin_reversible_command (_("extend selection"));
 338         selection->set (tv, region->position(), end);
 339         commit_reversible_command ();
 340 }
 341
 342 bool
 343 Editor::nudge_forward_release (GdkEventButton* ev)
 344 {
 345         if (ev->state & Keyboard::PrimaryModifier) {
 346                 nudge_forward (false, true);
 347         } else {
 348                 nudge_forward (false, false);
 349         }
 350         return false;
 351 }
 352
 353 bool
 354 Editor::nudge_backward_release (GdkEventButton* ev)
 355 {
 356         if (ev->state & Keyboard::PrimaryModifier) {
 357                 nudge_backward (false, true);
 358         } else {
 359                 nudge_backward (false, false);
 360         }
 361         return false;
 362 }
 363
 364
 365 void
 366 Editor::nudge_forward (bool next, bool force_playhead)
 367 {
 368         nframes_t distance;
 369         nframes_t next_distance;
 370         RegionSelection rs;
 371
 372         get_regions_for_action (rs);
 373
 374         if (!session) return;
 375
 376         if (!force_playhead && !rs.empty()) {
 377
 378                 begin_reversible_command (_("nudge regions forward"));
 379
 380                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 381                         boost::shared_ptr<Region> r ((*i)->region());
 382
 383                         distance = get_nudge_distance (r->position(), next_distance);
 384
 385                         if (next) {
 386                                 distance = next_distance;
 387                         }
 388
 389                         XMLNode &before = r->playlist()->get_state();
 390                         r->set_position (r->position() + distance, this);
 391                         XMLNode &after = r->playlist()->get_state();
 392                         session->add_command (new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 393                 }
 394
 395                 commit_reversible_command ();
 396
 397
 398         } else if (!force_playhead && !selection->markers.empty()) {
 399
 400                 bool is_start;
 401                 Location* loc = find_location_from_marker (selection->markers.front(), is_start);
 402
 403                 if (loc) {
 404
 405                         begin_reversible_command (_("nudge location forward"));
 406
 407                         XMLNode& before (loc->get_state());
 408
 409                         if (is_start) {
 410                                 distance = get_nudge_distance (loc->start(), next_distance);
 411                                 if (next) {
 412                                         distance = next_distance;
 413                                 }
 414                                 if (max_frames - distance > loc->start() + loc->length()) {
 415                                         loc->set_start (loc->start() + distance);
 416                                 } else {
 417                                         loc->set_start (max_frames - loc->length());
 418                                 }
 419                         } else {
 420                                 distance = get_nudge_distance (loc->end(), next_distance);
 421                                 if (next) {
 422                                         distance = next_distance;
 423                                 }
 424                                 if (max_frames - distance > loc->end()) {
 425                                         loc->set_end (loc->end() + distance);
 426                                 } else {
 427                                         loc->set_end (max_frames);
 428                                 }
 429                         }
 430                         XMLNode& after (loc->get_state());
 431                         session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 432                         commit_reversible_command ();
 433                 }
 434
 435         } else {
 436                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 437                 session->request_locate (playhead_cursor->current_frame + distance);
 438         }
 439 }
 440
 441 void
 442 Editor::nudge_backward (bool next, bool force_playhead)
 443 {
 444         nframes_t distance;
 445         nframes_t next_distance;
 446         RegionSelection rs;
 447
 448         get_regions_for_action (rs);
 449
 450         if (!session) return;
 451
 452         if (!force_playhead && !rs.empty()) {
 453
 454                 begin_reversible_command (_("nudge regions backward"));
 455
 456                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 457                         boost::shared_ptr<Region> r ((*i)->region());
 458
 459                         distance = get_nudge_distance (r->position(), next_distance);
 460
 461                         if (next) {
 462                                 distance = next_distance;
 463                         }
 464
 465                         XMLNode &before = r->playlist()->get_state();
 466
 467                         if (r->position() > distance) {
 468                                 r->set_position (r->position() - distance, this);
 469                         } else {
 470                                 r->set_position (0, this);
 471                         }
 472                         XMLNode &after = r->playlist()->get_state();
 473                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 474                 }
 475
 476                 commit_reversible_command ();
 477
 478         } else if (!force_playhead && !selection->markers.empty()) {
 479
 480                 bool is_start;
 481                 Location* loc = find_location_from_marker (selection->markers.front(), is_start);
 482
 483                 if (loc) {
 484
 485                         begin_reversible_command (_("nudge location forward"));
 486                         XMLNode& before (loc->get_state());
 487
 488                         if (is_start) {
 489                                 distance = get_nudge_distance (loc->start(), next_distance);
 490                                 if (next) {
 491                                         distance = next_distance;
 492                                 }
 493                                 if (distance < loc->start()) {
 494                                         loc->set_start (loc->start() - distance);
 495                                 } else {
 496                                         loc->set_start (0);
 497                                 }
 498                         } else {
 499                                 distance = get_nudge_distance (loc->end(), next_distance);
 500
 501                                 if (next) {
 502                                         distance = next_distance;
 503                                 }
 504
 505                                 if (distance < loc->end() - loc->length()) {
 506                                         loc->set_end (loc->end() - distance);
 507                                 } else {
 508                                         loc->set_end (loc->length());
 509                                 }
 510                         }
 511
 512                         XMLNode& after (loc->get_state());
 513                         session->add_command (new MementoCommand<Location>(*loc, &before, &after));
 514                 }
 515
 516         } else {
 517
 518                 distance = get_nudge_distance (playhead_cursor->current_frame, next_distance);
 519
 520                 if (playhead_cursor->current_frame > distance) {
 521                         session->request_locate (playhead_cursor->current_frame - distance);
 522                 } else {
 523                         session->goto_start();
 524                 }
 525         }
 526 }
 527
 528 void
 529 Editor::nudge_forward_capture_offset ()
 530 {
 531         nframes_t distance;
 532         RegionSelection rs;
 533
 534         get_regions_for_action (rs);
 535
 536         if (!session) return;
 537
 538         if (!rs.empty()) {
 539
 540                 begin_reversible_command (_("nudge forward"));
 541
 542                 distance = session->worst_output_latency();
 543
 544                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 545                         boost::shared_ptr<Region> r ((*i)->region());
 546
 547                         XMLNode &before = r->playlist()->get_state();
 548                         r->set_position (r->position() + distance, this);
 549                         XMLNode &after = r->playlist()->get_state();
 550                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 551                 }
 552
 553                 commit_reversible_command ();
 554
 555         }
 556 }
 557
 558 void
 559 Editor::nudge_backward_capture_offset ()
 560 {
 561         nframes_t distance;
 562         RegionSelection rs;
 563
 564         get_regions_for_action (rs);
 565
 566         if (!session) return;
 567
 568         if (!rs.empty()) {
 569
 570                 begin_reversible_command (_("nudge forward"));
 571
 572                 distance = session->worst_output_latency();
 573
 574                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
 575                         boost::shared_ptr<Region> r ((*i)->region());
 576
 577                         XMLNode &before = r->playlist()->get_state();
 578
 579                         if (r->position() > distance) {
 580                                 r->set_position (r->position() - distance, this);
 581                         } else {
 582                                 r->set_position (0, this);
 583                         }
 584                         XMLNode &after = r->playlist()->get_state();
 585                         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
 586                 }
 587
 588                 commit_reversible_command ();
 589         }
 590 }
 591
 592 /* DISPLAY MOTION */
 593
 594 void
 595 Editor::move_to_start ()
 596 {
 597         session->goto_start ();
 598 }
 599
 600 void
 601 Editor::move_to_end ()
 602 {
 603
 604         session->request_locate (session->current_end_frame());
 605 }
 606
 607 void
 608 Editor::build_region_boundary_cache ()
 609 {
 610         nframes_t pos = 0;
 611         vector<RegionPoint> interesting_points;
 612         boost::shared_ptr<Region> r;
 613         TrackViewList tracks;
 614         bool at_end = false;
 615
 616         region_boundary_cache.clear ();
 617
 618         if (session == 0) {
 619                 return;
 620         }
 621
 622         switch (snap_type) {
 623         case SnapToRegionStart:
 624                 interesting_points.push_back (Start);
 625                 break;
 626         case SnapToRegionEnd:
 627                 interesting_points.push_back (End);
 628                 break;
 629         case SnapToRegionSync:
 630                 interesting_points.push_back (SyncPoint);
 631                 break;
 632         case SnapToRegionBoundary:
 633                 interesting_points.push_back (Start);
 634                 interesting_points.push_back (End);
 635                 break;
 636         default:
 637                 fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), snap_type) << endmsg;
 638                 /*NOTREACHED*/
 639                 return;
 640         }
 641
 642         TimeAxisView *ontrack = 0;
 643         TrackViewList tlist;
 644
 645         if (!selection->tracks.empty()) {
 646                 tlist = selection->tracks;
 647         } else {
 648                 tlist = track_views;
 649         }
 650
 651         while (pos < session->current_end_frame() && !at_end) {
 652
 653                 nframes_t rpos;
 654                 nframes_t lpos = max_frames;
 655
 656                 for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 657
 658                         if ((r = find_next_region (pos, *p, 1, tlist, &ontrack)) == 0) {
 659                                 if (*p == interesting_points.back()) {
 660                                         at_end = true;
 661                                 }
 662                                 /* move to next point type */
 663                                 continue;
 664                         }
 665
 666                         switch (*p) {
 667                         case Start:
 668                                 rpos = r->first_frame();
 669                                 break;
 670
 671                         case End:
 672                                 rpos = r->last_frame();
 673                                 break;
 674
 675                         case SyncPoint:
 676                                 rpos = r->adjust_to_sync (r->first_frame());
 677                                 break;
 678
 679                         default:
 680                                 break;
 681                         }
 682
 683                         float speed = 1.0f;
 684                         RouteTimeAxisView *rtav;
 685
 686                         if (ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 687                                 if (rtav->get_diskstream() != 0) {
 688                                         speed = rtav->get_diskstream()->speed();
 689                                 }
 690                         }
 691
 692                         rpos = track_frame_to_session_frame (rpos, speed);
 693
 694                         if (rpos < lpos) {
 695                                 lpos = rpos;
 696                         }
 697
 698                         /* prevent duplicates, but we don't use set<> because we want to be able
 699                            to sort later.
 700                         */
 701
 702                         vector<nframes_t>::iterator ri;
 703
 704                         for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
 705                                 if (*ri == rpos) {
 706                                         break;
 707                                 }
 708                         }
 709
 710                         if (ri == region_boundary_cache.end()) {
 711                                 region_boundary_cache.push_back (rpos);
 712                         }
 713                 }
 714
 715                 pos = lpos + 1;
 716         }
 717
 718         /* finally sort to be sure that the order is correct */
 719
 720         sort (region_boundary_cache.begin(), region_boundary_cache.end());
 721 }
 722
 723 boost::shared_ptr<Region>
 724 Editor::find_next_region (nframes_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 725 {
 726         TrackViewList::iterator i;
 727         nframes_t closest = max_frames;
 728         boost::shared_ptr<Region> ret;
 729         nframes_t rpos = 0;
 730
 731         float track_speed;
 732         nframes_t track_frame;
 733         RouteTimeAxisView *rtav;
 734
 735         for (i = tracks.begin(); i != tracks.end(); ++i) {
 736
 737                 nframes_t distance;
 738                 boost::shared_ptr<Region> r;
 739
 740                 track_speed = 1.0f;
 741                 if ( (rtav = dynamic_cast<RouteTimeAxisView*>(*i)) != 0 ) {
 742                         if (rtav->get_diskstream()!=0)
 743                                 track_speed = rtav->get_diskstream()->speed();
 744                 }
 745
 746                 track_frame = session_frame_to_track_frame(frame, track_speed);
 747
 748                 if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
 749                         continue;
 750                 }
 751
 752                 switch (point) {
 753                 case Start:
 754                         rpos = r->first_frame ();
 755                         break;
 756
 757                 case End:
 758                         rpos = r->last_frame ();
 759                         break;
 760
 761                 case SyncPoint:
 762                         rpos = r->adjust_to_sync (r->first_frame());
 763                         break;
 764                 }
 765
 766                 // rpos is a "track frame", converting it to "session frame"
 767                 rpos = track_frame_to_session_frame(rpos, track_speed);
 768
 769                 if (rpos > frame) {
 770                         distance = rpos - frame;
 771                 } else {
 772                         distance = frame - rpos;
 773                 }
 774
 775                 if (distance < closest) {
 776                         closest = distance;
 777                         if (ontrack != 0)
 778                                 *ontrack = (*i);
 779                         ret = r;
 780                 }
 781         }
 782
 783         return ret;
 784 }
 785
 786 nframes64_t
 787 Editor::find_next_region_boundary (nframes64_t pos, int32_t dir, const TrackViewList& tracks)
 788 {
 789         nframes64_t distance = max_frames;
 790         nframes64_t current_nearest = -1;
 791
 792         for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
 793                 nframes64_t contender;
 794                 nframes64_t d;
 795
 796                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 797
 798                 if (!rtv) {
 799                         continue;
 800                 }
 801
 802                 if ((contender = rtv->find_next_region_boundary (pos, dir)) < 0) {
 803                         continue;
 804                 }
 805
 806                 d = ::llabs (pos - contender);
 807
 808                 if (d < distance) {
 809                         current_nearest = contender;
 810                         distance = d;
 811                 }
 812         }
 813
 814         return current_nearest;
 815 }
 816
 817 void
 818 Editor::cursor_to_region_boundary (Cursor* cursor, int32_t dir)
 819 {
 820         nframes64_t pos = cursor->current_frame;
 821         nframes64_t target;
 822
 823         if (!session) {
 824                 return;
 825         }
 826
 827         // so we don't find the current region again..
 828         if (dir > 0 || pos > 0) {
 829                 pos += dir;
 830         }
 831
 832         if (!selection->tracks.empty()) {
 833
 834                 target = find_next_region_boundary (pos, dir, selection->tracks);
 835
 836         } else {
 837
 838                 target = find_next_region_boundary (pos, dir, track_views);
 839         }
 840
 841         if (target < 0) {
 842                 return;
 843         }
 844
 845
 846         if (cursor == playhead_cursor) {
 847                 session->request_locate (target);
 848         } else {
 849                 cursor->set_position (target);
 850         }
 851 }
 852
 853 void
 854 Editor::cursor_to_next_region_boundary (Cursor* cursor)
 855 {
 856         cursor_to_region_boundary (cursor, 1);
 857 }
 858
 859 void
 860 Editor::cursor_to_previous_region_boundary (Cursor* cursor)
 861 {
 862         cursor_to_region_boundary (cursor, -1);
 863 }
 864
 865 void
 866 Editor::cursor_to_region_point (Cursor* cursor, RegionPoint point, int32_t dir)
 867 {
 868         boost::shared_ptr<Region> r;
 869         nframes_t pos = cursor->current_frame;
 870
 871         if (!session) {
 872                 return;
 873         }
 874
 875         TimeAxisView *ontrack = 0;
 876
 877         // so we don't find the current region again..
 878         if (dir>0 || pos>0)
 879                 pos+=dir;
 880
 881         if (!selection->tracks.empty()) {
 882
 883                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
 884
 885         } else if (clicked_axisview) {
 886
 887                 TrackViewList t;
 888                 t.push_back (clicked_axisview);
 889
 890                 r = find_next_region (pos, point, dir, t, &ontrack);
 891
 892         } else {
 893
 894                 r = find_next_region (pos, point, dir, track_views, &ontrack);
 895         }
 896
 897         if (r == 0) {
 898                 return;
 899         }
 900
 901         switch (point){
 902         case Start:
 903                 pos = r->first_frame ();
 904                 break;
 905
 906         case End:
 907                 pos = r->last_frame ();
 908                 break;
 909
 910         case SyncPoint:
 911                 pos = r->adjust_to_sync (r->first_frame());
 912                 break;
 913         }
 914
 915         float speed = 1.0f;
 916         RouteTimeAxisView *rtav;
 917
 918         if ( ontrack != 0 && (rtav = dynamic_cast<RouteTimeAxisView*>(ontrack)) != 0 ) {
 919                 if (rtav->get_diskstream() != 0) {
 920                         speed = rtav->get_diskstream()->speed();
 921                 }
 922         }
 923
 924         pos = track_frame_to_session_frame(pos, speed);
 925
 926         if (cursor == playhead_cursor) {
 927                 session->request_locate (pos);
 928         } else {
 929                 cursor->set_position (pos);
 930         }
 931 }
 932
 933 void
 934 Editor::cursor_to_next_region_point (Cursor* cursor, RegionPoint point)
 935 {
 936         cursor_to_region_point (cursor, point, 1);
 937 }
 938
 939 void
 940 Editor::cursor_to_previous_region_point (Cursor* cursor, RegionPoint point)
 941 {
 942         cursor_to_region_point (cursor, point, -1);
 943 }
 944
 945 void
 946 Editor::cursor_to_selection_start (Cursor *cursor)
 947 {
 948         nframes_t pos = 0;
 949         RegionSelection rs;
 950
 951         get_regions_for_action (rs);
 952
 953         switch (mouse_mode) {
 954         case MouseObject:
 955                 if (!rs.empty()) {
 956                         pos = rs.start();
 957                 }
 958                 break;
 959
 960         case MouseRange:
 961                 if (!selection->time.empty()) {
 962                         pos = selection->time.start ();
 963                 }
 964                 break;
 965
 966         default:
 967                 return;
 968         }
 969
 970         if (cursor == playhead_cursor) {
 971                 session->request_locate (pos);
 972         } else {
 973                 cursor->set_position (pos);
 974         }
 975 }
 976
 977 void
 978 Editor::cursor_to_selection_end (Cursor *cursor)
 979 {
 980         nframes_t pos = 0;
 981         RegionSelection rs;
 982
 983         get_regions_for_action (rs);
 984
 985         switch (mouse_mode) {
 986         case MouseObject:
 987                 if (!rs.empty()) {
 988                         pos = rs.end_frame();
 989                 }
 990                 break;
 991
 992         case MouseRange:
 993                 if (!selection->time.empty()) {
 994                         pos = selection->time.end_frame ();
 995                 }
 996                 break;
 997
 998         default:
 999                 return;
1000         }
1001
1002         if (cursor == playhead_cursor) {
1003                 session->request_locate (pos);
1004         } else {
1005                 cursor->set_position (pos);
1006         }
1007 }
1008
1009 void
1010 Editor::selected_marker_to_region_boundary (int32_t dir)
1011 {
1012         nframes64_t target;
1013         Location* loc;
1014         bool ignored;
1015
1016         if (!session) {
1017                 return;
1018         }
1019
1020         if (selection->markers.empty()) {
1021                 nframes64_t mouse;
1022                 bool ignored;
1023
1024                 if (!mouse_frame (mouse, ignored)) {
1025                         return;
1026                 }
1027
1028                 add_location_mark (mouse);
1029         }
1030
1031         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1032                 return;
1033         }
1034
1035         nframes64_t pos = loc->start();
1036
1037         // so we don't find the current region again..
1038         if (dir > 0 || pos > 0) {
1039                 pos += dir;
1040         }
1041
1042         if (!selection->tracks.empty()) {
1043
1044                 target = find_next_region_boundary (pos, dir, selection->tracks);
1045
1046         } else {
1047
1048                 target = find_next_region_boundary (pos, dir, track_views);
1049         }
1050
1051         if (target < 0) {
1052                 return;
1053         }
1054
1055         loc->move_to (target);
1056 }
1057
1058 void
1059 Editor::selected_marker_to_next_region_boundary ()
1060 {
1061         selected_marker_to_region_boundary (1);
1062 }
1063
1064 void
1065 Editor::selected_marker_to_previous_region_boundary ()
1066 {
1067         selected_marker_to_region_boundary (-1);
1068 }
1069
1070 void
1071 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
1072 {
1073         boost::shared_ptr<Region> r;
1074         nframes_t pos;
1075         Location* loc;
1076         bool ignored;
1077
1078         if (!session || selection->markers.empty()) {
1079                 return;
1080         }
1081
1082         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1083                 return;
1084         }
1085
1086         TimeAxisView *ontrack = 0;
1087
1088         pos = loc->start();
1089
1090         // so we don't find the current region again..
1091         if (dir>0 || pos>0)
1092                 pos+=dir;
1093
1094         if (!selection->tracks.empty()) {
1095
1096                 r = find_next_region (pos, point, dir, selection->tracks, &ontrack);
1097
1098         } else {
1099
1100                 r = find_next_region (pos, point, dir, track_views, &ontrack);
1101         }
1102
1103         if (r == 0) {
1104                 return;
1105         }
1106
1107         switch (point){
1108         case Start:
1109                 pos = r->first_frame ();
1110                 break;
1111
1112         case End:
1113                 pos = r->last_frame ();
1114                 break;
1115
1116         case SyncPoint:
1117                 pos = r->adjust_to_sync (r->first_frame());
1118                 break;
1119         }
1120
1121         float speed = 1.0f;
1122         AudioTimeAxisView *atav;
1123
1124         if ( ontrack != 0 && (atav = dynamic_cast<AudioTimeAxisView*>(ontrack)) != 0 ) {
1125                 if (atav->get_diskstream() != 0) {
1126                         speed = atav->get_diskstream()->speed();
1127                 }
1128         }
1129
1130         pos = track_frame_to_session_frame(pos, speed);
1131
1132         loc->move_to (pos);
1133 }
1134
1135 void
1136 Editor::selected_marker_to_next_region_point (RegionPoint point)
1137 {
1138         selected_marker_to_region_point (point, 1);
1139 }
1140
1141 void
1142 Editor::selected_marker_to_previous_region_point (RegionPoint point)
1143 {
1144         selected_marker_to_region_point (point, -1);
1145 }
1146
1147 void
1148 Editor::selected_marker_to_selection_start ()
1149 {
1150         nframes_t pos = 0;
1151         Location* loc;
1152         bool ignored;
1153
1154         if (!session || selection->markers.empty()) {
1155                 return;
1156         }
1157
1158         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1159                 return;
1160         }
1161
1162         RegionSelection rs;
1163
1164         get_regions_for_action (rs);
1165
1166         switch (mouse_mode) {
1167         case MouseObject:
1168                 if (!rs.empty()) {
1169                         pos = rs.start();
1170                 }
1171                 break;
1172
1173         case MouseRange:
1174                 if (!selection->time.empty()) {
1175                         pos = selection->time.start ();
1176                 }
1177                 break;
1178
1179         default:
1180                 return;
1181         }
1182
1183         loc->move_to (pos);
1184 }
1185
1186 void
1187 Editor::selected_marker_to_selection_end ()
1188 {
1189         nframes_t pos = 0;
1190         Location* loc;
1191         bool ignored;
1192
1193         if (!session || selection->markers.empty()) {
1194                 return;
1195         }
1196
1197         if ((loc = find_location_from_marker (selection->markers.front(), ignored)) == 0) {
1198                 return;
1199         }
1200
1201         RegionSelection rs;
1202
1203         get_regions_for_action (rs);
1204
1205         switch (mouse_mode) {
1206         case MouseObject:
1207                 if (!rs.empty()) {
1208                         pos = rs.end_frame();
1209                 }
1210                 break;
1211
1212         case MouseRange:
1213                 if (!selection->time.empty()) {
1214                         pos = selection->time.end_frame ();
1215                 }
1216                 break;
1217
1218         default:
1219                 return;
1220         }
1221
1222         loc->move_to (pos);
1223 }
1224
1225 void
1226 Editor::scroll_playhead (bool forward)
1227 {
1228         nframes_t pos = playhead_cursor->current_frame;
1229         nframes_t delta = (nframes_t) floor (current_page_frames() / 0.8);
1230
1231         if (forward) {
1232                 if (pos == max_frames) {
1233                         return;
1234                 }
1235
1236                 if (pos < max_frames - delta) {
1237                         pos += delta ;
1238                 } else {
1239                         pos = max_frames;
1240                 }
1241
1242         } else {
1243
1244                 if (pos == 0) {
1245                         return;
1246                 }
1247
1248                 if (pos > delta) {
1249                         pos -= delta;
1250                 } else {
1251                         pos = 0;
1252                 }
1253         }
1254
1255         session->request_locate (pos);
1256 }
1257
1258 void
1259 Editor::playhead_backward ()
1260 {
1261         nframes_t pos;
1262         nframes_t cnt;
1263         float prefix;
1264         bool was_floating;
1265
1266         if (get_prefix (prefix, was_floating)) {
1267                 cnt = 1;
1268         } else {
1269                 if (was_floating) {
1270                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1271                 } else {
1272                         cnt = (nframes_t) prefix;
1273                 }
1274         }
1275
1276         pos = playhead_cursor->current_frame;
1277
1278         if ((nframes_t) pos < cnt) {
1279                 pos = 0;
1280         } else {
1281                 pos -= cnt;
1282         }
1283
1284         /* XXX this is completely insane. with the current buffering
1285            design, we'll force a complete track buffer flush and
1286            reload, just to move 1 sample !!!
1287         */
1288
1289         session->request_locate (pos);
1290 }
1291
1292 void
1293 Editor::playhead_forward ()
1294 {
1295         nframes_t pos;
1296         nframes_t cnt;
1297         bool was_floating;
1298         float prefix;
1299
1300         if (get_prefix (prefix, was_floating)) {
1301                 cnt = 1;
1302         } else {
1303                 if (was_floating) {
1304                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1305                 } else {
1306                         cnt = (nframes_t) floor (prefix);
1307                 }
1308         }
1309
1310         pos = playhead_cursor->current_frame;
1311
1312         /* XXX this is completely insane. with the current buffering
1313            design, we'll force a complete track buffer flush and
1314            reload, just to move 1 sample !!!
1315         */
1316
1317         session->request_locate (pos+cnt);
1318 }
1319
1320 void
1321 Editor::cursor_align (bool playhead_to_edit)
1322 {
1323         if (!session) {
1324                 return;
1325         }
1326
1327         if (playhead_to_edit) {
1328
1329                 if (selection->markers.empty()) {
1330                         return;
1331                 }
1332
1333                 session->request_locate (selection->markers.front()->position(), session->transport_rolling());
1334
1335         } else {
1336                 /* move selected markers to playhead */
1337
1338                 for (MarkerSelection::iterator i = selection->markers.begin(); i != selection->markers.end(); ++i) {
1339                         bool ignored;
1340
1341                         Location* loc = find_location_from_marker (*i, ignored);
1342
1343                         if (loc->is_mark()) {
1344                                 loc->set_start (playhead_cursor->current_frame);
1345                         } else {
1346                                 loc->set (playhead_cursor->current_frame,
1347                                           playhead_cursor->current_frame + loc->length());
1348                         }
1349                 }
1350         }
1351 }
1352
1353 void
1354 Editor::edit_cursor_backward ()
1355 {
1356         nframes64_t pos;
1357         nframes64_t cnt;
1358         float prefix;
1359         bool was_floating;
1360
1361         if (get_prefix (prefix, was_floating)) {
1362                 cnt = 1;
1363         } else {
1364                 if (was_floating) {
1365                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1366                 } else {
1367                         cnt = (nframes_t) prefix;
1368                 }
1369         }
1370
1371         if ((pos = get_preferred_edit_position()) < 0) {
1372                 return;
1373         }
1374
1375         if (pos < cnt) {
1376                 pos = 0;
1377         } else {
1378                 pos -= cnt;
1379         }
1380
1381         // EDIT CURSOR edit_cursor->set_position (pos);
1382 }
1383
1384 void
1385 Editor::edit_cursor_forward ()
1386 {
1387         //nframes_t pos;
1388         nframes_t cnt;
1389         bool was_floating;
1390         float prefix;
1391
1392         if (get_prefix (prefix, was_floating)) {
1393                 cnt = 1;
1394         } else {
1395                 if (was_floating) {
1396                         cnt = (nframes_t) floor (prefix * session->frame_rate ());
1397                 } else {
1398                         cnt = (nframes_t) floor (prefix);
1399                 }
1400         }
1401
1402         // pos = edit_cursor->current_frame;
1403         // EDIT CURSOR edit_cursor->set_position (pos+cnt);
1404 }
1405
1406 void
1407 Editor::goto_frame ()
1408 {
1409         float prefix;
1410         bool was_floating;
1411         nframes_t frame;
1412
1413         if (get_prefix (prefix, was_floating)) {
1414                 return;
1415         }
1416
1417         if (was_floating) {
1418                 frame = (nframes_t) floor (prefix * session->frame_rate());
1419         } else {
1420                 frame = (nframes_t) floor (prefix);
1421         }
1422
1423         session->request_locate (frame);
1424 }
1425
1426 void
1427 Editor::scroll_backward (float pages)
1428 {
1429         nframes_t frame;
1430         nframes_t one_page = (nframes_t) rint (canvas_width * frames_per_unit);
1431         bool was_floating;
1432         float prefix;
1433         nframes_t cnt;
1434
1435         if (get_prefix (prefix, was_floating)) {
1436                 cnt = (nframes_t) floor (pages * one_page);
1437         } else {
1438                 if (was_floating) {
1439                         cnt = (nframes_t) floor (prefix * session->frame_rate());
1440                 } else {
1441                         cnt = (nframes_t) floor (prefix * one_page);
1442                 }
1443         }
1444
1445         if (leftmost_frame < cnt) {
1446                 frame = 0;
1447         } else {
1448                 frame = leftmost_frame - cnt;
1449         }
1450
1451         reset_x_origin (frame);
1452 }
1453
1454 void
1455 Editor::scroll_forward (float pages)
1456 {
1457         nframes_t frame;
1458         nframes_t one_page = (nframes_t) rint (canvas_width * frames_per_unit);
1459         bool was_floating;
1460         float prefix;
1461         nframes_t cnt;
1462
1463         if (get_prefix (prefix, was_floating)) {
1464                 cnt = (nframes_t) floor (pages * one_page);
1465         } else {
1466                 if (was_floating) {
1467                         cnt = (nframes_t) floor (prefix * session->frame_rate());
1468                 } else {
1469                         cnt = (nframes_t) floor (prefix * one_page);
1470                 }
1471         }
1472
1473         if (max_frames - cnt < leftmost_frame) {
1474                 frame = max_frames - cnt;
1475         } else {
1476                 frame = leftmost_frame + cnt;
1477         }
1478
1479         reset_x_origin (frame);
1480 }
1481
1482 void
1483 Editor::scroll_tracks_down ()
1484 {
1485         float prefix;
1486         bool was_floating;
1487         int cnt;
1488
1489         if (get_prefix (prefix, was_floating)) {
1490                 cnt = 1;
1491         } else {
1492                 cnt = (int) floor (prefix);
1493         }
1494
1495         double vert_value = vertical_adjustment.get_value() + (cnt *
1496                 vertical_adjustment.get_page_size());
1497         if (vert_value > vertical_adjustment.get_upper() - canvas_height) {
1498                 vert_value = vertical_adjustment.get_upper() - canvas_height;
1499         }
1500         vertical_adjustment.set_value (vert_value);
1501 }
1502
1503 void
1504 Editor::scroll_tracks_up ()
1505 {
1506         float prefix;
1507         bool was_floating;
1508         int cnt;
1509
1510         if (get_prefix (prefix, was_floating)) {
1511                 cnt = 1;
1512         } else {
1513                 cnt = (int) floor (prefix);
1514         }
1515
1516         vertical_adjustment.set_value (vertical_adjustment.get_value() - (cnt * vertical_adjustment.get_page_size()));
1517 }
1518
1519 void
1520 Editor::scroll_tracks_down_line ()
1521 {
1522
1523         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1524         double vert_value = adj->get_value() + 20;
1525
1526         if (vert_value>adj->get_upper() - canvas_height) {
1527                 vert_value = adj->get_upper() - canvas_height;
1528         }
1529         adj->set_value (vert_value);
1530 }
1531
1532 void
1533 Editor::scroll_tracks_up_line ()
1534 {
1535         Gtk::Adjustment* adj = edit_vscrollbar.get_adjustment();
1536         adj->set_value (adj->get_value() - 20);
1537 }
1538
1539 /* ZOOM */
1540
1541 void
1542 Editor::temporal_zoom_step (bool coarser)
1543 {
1544         ENSURE_GUI_THREAD (bind (mem_fun (*this, &Editor::temporal_zoom_step), coarser));
1545
1546         double nfpu;
1547
1548         nfpu = frames_per_unit;
1549
1550         if (coarser) {
1551                 nfpu *= 1.61803399;
1552         } else {
1553                 nfpu = max(1.0,(nfpu/1.61803399));
1554         }
1555
1556         temporal_zoom (nfpu);
1557 }
1558
1559 void
1560 Editor::temporal_zoom (gdouble fpu)
1561 {
1562         if (!session) return;
1563
1564         nframes64_t current_page = current_page_frames();
1565         nframes64_t current_leftmost = leftmost_frame;
1566         nframes64_t current_rightmost;
1567         nframes64_t current_center;
1568         nframes64_t new_page_size;
1569         nframes64_t half_page_size;
1570         nframes64_t leftmost_after_zoom = 0;
1571         nframes64_t where;
1572         bool in_track_canvas;
1573         double nfpu;
1574         double l;
1575
1576         /* XXX this limit is also in ::set_frames_per_unit() */
1577
1578         if (frames_per_unit <= 2.0 && fpu <= frames_per_unit) {
1579                 return;
1580         }
1581
1582         nfpu = fpu;
1583
1584         new_page_size = (nframes_t) floor (canvas_width * nfpu);
1585         half_page_size = new_page_size / 2;
1586
1587         switch (zoom_focus) {
1588         case ZoomFocusLeft:
1589                 leftmost_after_zoom = current_leftmost;
1590                 break;
1591
1592         case ZoomFocusRight:
1593                 current_rightmost = leftmost_frame + current_page;
1594                 if (current_rightmost < new_page_size) {
1595                         leftmost_after_zoom = 0;
1596                 } else {
1597                         leftmost_after_zoom = current_rightmost - new_page_size;
1598                 }
1599                 break;
1600
1601         case ZoomFocusCenter:
1602                 current_center = current_leftmost + (current_page/2);
1603                 if (current_center < half_page_size) {
1604                         leftmost_after_zoom = 0;
1605                 } else {
1606                         leftmost_after_zoom = current_center - half_page_size;
1607                 }
1608                 break;
1609
1610         case ZoomFocusPlayhead:
1611                 /* try to keep the playhead in the same place */
1612
1613                 where = playhead_cursor->current_frame;
1614
1615                 l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1616
1617                 if (l < 0) {
1618                         leftmost_after_zoom = 0;
1619                 } else if (l > max_frames) {
1620                         leftmost_after_zoom = max_frames - new_page_size;
1621                 } else {
1622                         leftmost_after_zoom = (nframes64_t) l;
1623                 }
1624                 break;
1625
1626         case ZoomFocusMouse:
1627                 /* try to keep the mouse over the same point in the display */
1628
1629                 if (!mouse_frame (where, in_track_canvas)) {
1630                         /* use playhead instead */
1631                         where = playhead_cursor->current_frame;
1632
1633                         if (where < half_page_size) {
1634                                 leftmost_after_zoom = 0;
1635                         } else {
1636                                 leftmost_after_zoom = where - half_page_size;
1637                         }
1638
1639                 } else {
1640
1641                         l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1642
1643                         if (l < 0) {
1644                                 leftmost_after_zoom = 0;
1645                         } else if (l > max_frames) {
1646                                 leftmost_after_zoom = max_frames - new_page_size;
1647                         } else {
1648                                 leftmost_after_zoom = (nframes64_t) l;
1649                         }
1650                 }
1651
1652                 break;
1653
1654         case ZoomFocusEdit:
1655                 /* try to keep the edit point in the same place */
1656                 where = get_preferred_edit_position ();
1657
1658                 if (where > 0) {
1659
1660                         double l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
1661
1662                         if (l < 0) {
1663                                 leftmost_after_zoom = 0;
1664                         } else if (l > max_frames) {
1665                                 leftmost_after_zoom = max_frames - new_page_size;
1666                         } else {
1667                                 leftmost_after_zoom = (nframes64_t) l;
1668                         }
1669
1670                 } else {
1671                         /* edit point not defined */
1672                         return;
1673                 }
1674                 break;
1675
1676         }
1677
1678         // leftmost_after_zoom = min (leftmost_after_zoom, session->current_end_frame());
1679
1680         reposition_and_zoom (leftmost_after_zoom, nfpu);
1681 }
1682
1683 void
1684 Editor::temporal_zoom_region ()
1685 {
1686
1687         nframes64_t start = max_frames;
1688         nframes64_t end = 0;
1689         RegionSelection rs;
1690
1691         get_regions_for_action (rs);
1692
1693         if (rs.empty()) {
1694                 return;
1695         }
1696
1697         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
1698                 if ((*i)->region()->position() < start) {
1699                         start = (*i)->region()->position();
1700                 }
1701                 if ((*i)->region()->last_frame() + 1 > end) {
1702                         end = (*i)->region()->last_frame() + 1;
1703                 }
1704         }
1705
1706         /* now comes an "interesting" hack ... make sure we leave a little space
1707            at each end of the editor so that the zoom doesn't fit the region
1708            precisely to the screen.
1709         */
1710
1711         GdkScreen* screen = gdk_screen_get_default ();
1712         gint pixwidth = gdk_screen_get_width (screen);
1713         gint mmwidth = gdk_screen_get_width_mm (screen);
1714         double pix_per_mm = (double) pixwidth/ (double) mmwidth;
1715         double one_centimeter_in_pixels = pix_per_mm * 10.0;
1716         nframes_t extra_samples = unit_to_frame (one_centimeter_in_pixels);
1717
1718         if (start > extra_samples) {
1719                 start -= extra_samples;
1720         } else {
1721                 start = 0;
1722         }
1723
1724         if (max_frames - extra_samples > end) {
1725                 end += extra_samples;
1726         } else {
1727                 end = max_frames;
1728         }
1729
1730         temporal_zoom_by_frame (start, end, "zoom to region");
1731         zoomed_to_region = true;
1732 }
1733
1734 void
1735 Editor::toggle_zoom_region ()
1736 {
1737         if (zoomed_to_region) {
1738                 swap_visual_state ();
1739         } else {
1740                 temporal_zoom_region ();
1741         }
1742 }
1743
1744 void
1745 Editor::temporal_zoom_selection ()
1746 {
1747         if (!selection) return;
1748
1749         if (selection->time.empty()) {
1750                 return;
1751         }
1752
1753         nframes_t start = selection->time[clicked_selection].start;
1754         nframes_t end = selection->time[clicked_selection].end;
1755
1756         temporal_zoom_by_frame (start, end, "zoom to selection");
1757 }
1758
1759 void
1760 Editor::temporal_zoom_session ()
1761 {
1762         ENSURE_GUI_THREAD (mem_fun (*this, &Editor::temporal_zoom_session));
1763
1764         if (session) {
1765                 temporal_zoom_by_frame (session->current_start_frame(), session->current_end_frame(), "zoom to session");
1766         }
1767 }
1768
1769 void
1770 Editor::temporal_zoom_by_frame (nframes_t start, nframes_t end, const string & op)
1771 {
1772         if (!session) return;
1773
1774         if ((start == 0 && end == 0) || end < start) {
1775                 return;
1776         }
1777
1778         nframes_t range = end - start;
1779
1780         double new_fpu = (double)range / (double)canvas_width;
1781 //      double p2 = 1.0;
1782
1783 //      while (p2 < new_fpu) {
1784 //              p2 *= 2.0;
1785 //      }
1786 //      new_fpu = p2;
1787
1788         nframes_t new_page = (nframes_t) floor (canvas_width * new_fpu);
1789         nframes_t middle = (nframes_t) floor( (double)start + ((double)range / 2.0f ));
1790         nframes_t new_leftmost = (nframes_t) floor( (double)middle - ((double)new_page/2.0f));
1791
1792         if (new_leftmost > middle) new_leftmost = 0;
1793
1794 //      begin_reversible_command (op);
1795 //      session->add_undo (bind (mem_fun(*this, &Editor::reposition_and_zoom), leftmost_frame, frames_per_unit));
1796 //      session->add_redo (bind (mem_fun(*this, &Editor::reposition_and_zoom), new_leftmost, new_fpu));
1797 //      commit_reversible_command ();
1798
1799         reposition_and_zoom (new_leftmost, new_fpu);
1800 }
1801
1802 void
1803 Editor::temporal_zoom_to_frame (bool coarser, nframes_t frame)
1804 {
1805         if (!session) return;
1806
1807         double range_before = frame - leftmost_frame;
1808         double new_fpu;
1809
1810         new_fpu = frames_per_unit;
1811
1812         if (coarser) {
1813                 new_fpu *= 1.61803399;
1814                 range_before *= 1.61803399;
1815         } else {
1816                 new_fpu = max(1.0,(new_fpu/1.61803399));
1817                 range_before /= 1.61803399;
1818         }
1819
1820         if (new_fpu == frames_per_unit) return;
1821
1822         nframes_t new_leftmost = frame - (nframes_t)range_before;
1823
1824         if (new_leftmost > frame) new_leftmost = 0;
1825
1826 //      begin_reversible_command (_("zoom to frame"));
1827 //      session->add_undo (bind (mem_fun(*this, &Editor::reposition_and_zoom), leftmost_frame, frames_per_unit));
1828 //      session->add_redo (bind (mem_fun(*this, &Editor::reposition_and_zoom), new_leftmost, new_fpu));
1829 //      commit_reversible_command ();
1830
1831         reposition_and_zoom (new_leftmost, new_fpu);
1832 }
1833
1834 void
1835 Editor::add_location_from_selection ()
1836 {
1837         string rangename;
1838
1839         if (selection->time.empty()) {
1840                 return;
1841         }
1842
1843         if (session == 0 || clicked_axisview == 0) {
1844                 return;
1845         }
1846
1847         nframes_t start = selection->time[clicked_selection].start;
1848         nframes_t end = selection->time[clicked_selection].end;
1849
1850         session->locations()->next_available_name(rangename,"selection");
1851         Location *location = new Location (start, end, rangename, Location::IsRangeMarker);
1852
1853         session->begin_reversible_command (_("add marker"));
1854         XMLNode &before = session->locations()->get_state();
1855         session->locations()->add (location, true);
1856         XMLNode &after = session->locations()->get_state();
1857         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1858         session->commit_reversible_command ();
1859 }
1860
1861 void
1862 Editor::add_location_mark (nframes64_t where)
1863 {
1864         string markername;
1865
1866         select_new_marker = true;
1867
1868         session->locations()->next_available_name(markername,"mark");
1869         Location *location = new Location (where, where, markername, Location::IsMark);
1870         session->begin_reversible_command (_("add marker"));
1871         XMLNode &before = session->locations()->get_state();
1872         session->locations()->add (location, true);
1873         XMLNode &after = session->locations()->get_state();
1874         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1875         session->commit_reversible_command ();
1876 }
1877
1878 void
1879 Editor::add_location_from_playhead_cursor ()
1880 {
1881         add_location_mark (session->audible_frame());
1882 }
1883
1884 void
1885 Editor::add_location_from_audio_region ()
1886 {
1887         RegionSelection rs;
1888
1889         get_regions_for_action (rs);
1890
1891         if (rs.empty()) {
1892                 return;
1893         }
1894
1895         RegionView* rv = *(rs.begin());
1896         boost::shared_ptr<Region> region = rv->region();
1897
1898         Location *location = new Location (region->position(), region->last_frame(), region->name(), Location::IsRangeMarker);
1899         session->begin_reversible_command (_("add marker"));
1900         XMLNode &before = session->locations()->get_state();
1901         session->locations()->add (location, true);
1902         XMLNode &after = session->locations()->get_state();
1903         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
1904         session->commit_reversible_command ();
1905 }
1906
1907 void
1908 Editor::amplitude_zoom_step (bool in)
1909 {
1910         gdouble zoom = 1.0;
1911
1912         if (in) {
1913                 zoom *= 2.0;
1914         } else {
1915                 if (zoom > 2.0) {
1916                         zoom /= 2.0;
1917                 } else {
1918                         zoom = 1.0;
1919                 }
1920         }
1921
1922 #ifdef FIX_FOR_CANVAS
1923         /* XXX DO SOMETHING */
1924 #endif
1925 }
1926
1927
1928 /* DELETION */
1929
1930
1931 void
1932 Editor::delete_sample_forward ()
1933 {
1934 }
1935
1936 void
1937 Editor::delete_sample_backward ()
1938 {
1939 }
1940
1941 void
1942 Editor::delete_screen ()
1943 {
1944 }
1945
1946 /* SEARCH */
1947
1948 void
1949 Editor::search_backwards ()
1950 {
1951         /* what ? */
1952 }
1953
1954 void
1955 Editor::search_forwards ()
1956 {
1957         /* what ? */
1958 }
1959
1960 /* MARKS */
1961
1962 void
1963 Editor::jump_forward_to_mark ()
1964 {
1965         if (!session) {
1966                 return;
1967         }
1968
1969         Location *location = session->locations()->first_location_after (playhead_cursor->current_frame);
1970
1971         if (location) {
1972                 session->request_locate (location->start(), session->transport_rolling());
1973         } else {
1974                 session->request_locate (session->current_end_frame());
1975         }
1976 }
1977
1978 void
1979 Editor::jump_backward_to_mark ()
1980 {
1981         if (!session) {
1982                 return;
1983         }
1984
1985         Location *location = session->locations()->first_location_before (playhead_cursor->current_frame);
1986
1987         if (location) {
1988                 session->request_locate (location->start(), session->transport_rolling());
1989         } else {
1990                 session->goto_start ();
1991         }
1992 }
1993
1994 void
1995 Editor::set_mark ()
1996 {
1997         nframes_t pos;
1998         float prefix;
1999         bool was_floating;
2000         string markername;
2001
2002         if (get_prefix (prefix, was_floating)) {
2003                 pos = session->audible_frame ();
2004         } else {
2005                 if (was_floating) {
2006                         pos = (nframes_t) floor (prefix * session->frame_rate ());
2007                 } else {
2008                         pos = (nframes_t) floor (prefix);
2009                 }
2010         }
2011
2012         session->locations()->next_available_name(markername,"mark");
2013         session->locations()->add (new Location (pos, 0, markername, Location::IsMark), true);
2014 }
2015
2016 void
2017 Editor::clear_markers ()
2018 {
2019         if (session) {
2020                 session->begin_reversible_command (_("clear markers"));
2021                 XMLNode &before = session->locations()->get_state();
2022                 session->locations()->clear_markers ();
2023                 XMLNode &after = session->locations()->get_state();
2024                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2025                 session->commit_reversible_command ();
2026         }
2027 }
2028
2029 void
2030 Editor::clear_ranges ()
2031 {
2032         if (session) {
2033                 session->begin_reversible_command (_("clear ranges"));
2034                 XMLNode &before = session->locations()->get_state();
2035
2036                 Location * looploc = session->locations()->auto_loop_location();
2037                 Location * punchloc = session->locations()->auto_punch_location();
2038
2039                 session->locations()->clear_ranges ();
2040                 // re-add these
2041                 if (looploc) session->locations()->add (looploc);
2042                 if (punchloc) session->locations()->add (punchloc);
2043
2044                 XMLNode &after = session->locations()->get_state();
2045                 session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2046                 session->commit_reversible_command ();
2047         }
2048 }
2049
2050 void
2051 Editor::clear_locations ()
2052 {
2053         session->begin_reversible_command (_("clear locations"));
2054         XMLNode &before = session->locations()->get_state();
2055         session->locations()->clear ();
2056         XMLNode &after = session->locations()->get_state();
2057         session->add_command(new MementoCommand<Locations>(*(session->locations()), &before, &after));
2058         session->commit_reversible_command ();
2059         session->locations()->clear ();
2060 }
2061
2062 void
2063 Editor::unhide_markers ()
2064 {
2065         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2066                 Location *l = (*i).first;
2067                 if (l->is_hidden() && l->is_mark()) {
2068                         l->set_hidden(false, this);
2069                 }
2070         }
2071 }
2072
2073 void
2074 Editor::unhide_ranges ()
2075 {
2076         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
2077                 Location *l = (*i).first;
2078                 if (l->is_hidden() && l->is_range_marker()) {
2079                         l->set_hidden(false, this);
2080                 }
2081         }
2082 }
2083
2084 /* INSERT/REPLACE */
2085
2086 void
2087 Editor::insert_region_list_drag (boost::shared_ptr<Region> region, int x, int y)
2088 {
2089         double wx, wy;
2090         double cx, cy;
2091         TimeAxisView *tv;
2092         nframes_t where;
2093         RouteTimeAxisView *rtv = 0;
2094         boost::shared_ptr<Playlist> playlist;
2095
2096         track_canvas.window_to_world (x, y, wx, wy);
2097         wx += horizontal_adjustment.get_value();
2098         wy += vertical_adjustment.get_value();
2099
2100         GdkEvent event;
2101         event.type = GDK_BUTTON_RELEASE;
2102         event.button.x = wx;
2103         event.button.y = wy;
2104
2105         where = event_frame (&event, &cx, &cy);
2106
2107         if (where < leftmost_frame || where > leftmost_frame + current_page_frames()) {
2108                 /* clearly outside canvas area */
2109                 return;
2110         }
2111
2112         if ((tv = trackview_by_y_position (cy)) == 0) {
2113                 return;
2114         }
2115
2116         if ((rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2117                 return;
2118         }
2119
2120         if ((playlist = rtv->playlist()) == 0) {
2121                 return;
2122         }
2123
2124         snap_to (where);
2125
2126         begin_reversible_command (_("insert dragged region"));
2127         XMLNode &before = playlist->get_state();
2128         playlist->add_region (RegionFactory::create (region), where, 1.0);
2129         session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2130         commit_reversible_command ();
2131 }
2132
2133 void
2134 Editor::insert_route_list_drag (boost::shared_ptr<Route> route, int x, int y) {
2135         double wx, wy;
2136         double cx, cy;
2137         TimeAxisView *tv;
2138         nframes_t where;
2139         RouteTimeAxisView *dest_rtv = 0;
2140         RouteTimeAxisView *source_rtv = 0;
2141
2142         track_canvas.window_to_world (x, y, wx, wy);
2143         wx += horizontal_adjustment.get_value();
2144         wy += vertical_adjustment.get_value();
2145
2146         GdkEvent event;
2147         event.type = GDK_BUTTON_RELEASE;
2148         event.button.x = wx;
2149         event.button.y = wy;
2150
2151         where = event_frame (&event, &cx, &cy);
2152
2153         if ((tv = trackview_by_y_position (cy)) == 0) {
2154                 return;
2155         }
2156
2157         if ((dest_rtv = dynamic_cast<RouteTimeAxisView*>(tv)) == 0) {
2158                 return;
2159         }
2160
2161         /* use this drag source to add underlay to a track. But we really don't care
2162            about the Route, only the view of the route, so find it first */
2163         for(TrackViewList::iterator it = track_views.begin(); it != track_views.end(); ++it) {
2164                 if((source_rtv = dynamic_cast<RouteTimeAxisView*>(*it)) == 0) {
2165                         continue;
2166                 }
2167
2168                 if(source_rtv->route() == route && source_rtv != dest_rtv) {
2169                         dest_rtv->add_underlay(source_rtv->view());
2170                         break;
2171                 }
2172         }
2173 }
2174
2175 void
2176 Editor::insert_region_list_selection (float times)
2177 {
2178         RouteTimeAxisView *tv = 0;
2179         boost::shared_ptr<Playlist> playlist;
2180
2181         if (clicked_routeview != 0) {
2182                 tv = clicked_routeview;
2183         } else if (!selection->tracks.empty()) {
2184                 if ((tv = dynamic_cast<RouteTimeAxisView*>(selection->tracks.front())) == 0) {
2185                         return;
2186                 }
2187         } else if (entered_track != 0) {
2188                 if ((tv = dynamic_cast<RouteTimeAxisView*>(entered_track)) == 0) {
2189                         return;
2190                 }
2191         } else {
2192                 return;
2193         }
2194
2195         if ((playlist = tv->playlist()) == 0) {
2196                 return;
2197         }
2198
2199         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
2200
2201         if (selected->count_selected_rows() != 1) {
2202                 return;
2203         }
2204
2205         TreeView::Selection::ListHandle_Path rows = selected->get_selected_rows ();
2206
2207         /* only one row selected, so rows.begin() is it */
2208
2209         TreeIter iter;
2210
2211         if ((iter = region_list_model->get_iter (*rows.begin()))) {
2212
2213                 boost::shared_ptr<Region> region = (*iter)[region_list_columns.region];
2214
2215                 begin_reversible_command (_("insert region"));
2216                 XMLNode &before = playlist->get_state();
2217                 playlist->add_region ((RegionFactory::create (region)), get_preferred_edit_position(), times);
2218                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
2219                 commit_reversible_command ();
2220         }
2221 }
2222
2223 /* BUILT-IN EFFECTS */
2224
2225 void
2226 Editor::reverse_selection ()
2227 {
2228
2229 }
2230
2231 /* GAIN ENVELOPE EDITING */
2232
2233 void
2234 Editor::edit_envelope ()
2235 {
2236 }
2237
2238 /* PLAYBACK */
2239
2240 void
2241 Editor::transition_to_rolling (bool fwd)
2242 {
2243         if (!session) {
2244                 return;
2245         }
2246
2247         switch (Config->get_slave_source()) {
2248         case None:
2249         case JACK:
2250                 break;
2251         default:
2252                 /* transport controlled by the master */
2253                 return;
2254         }
2255
2256         if (session->is_auditioning()) {
2257                 session->cancel_audition ();
2258                 return;
2259         }
2260
2261         session->request_transport_speed (fwd ? 1.0f : -1.0f);
2262 }
2263
2264 void
2265 Editor::toggle_playback (bool with_abort)
2266 {
2267         if (!session) {
2268                 return;
2269         }
2270
2271         switch (Config->get_slave_source()) {
2272         case None:
2273         case JACK:
2274                 break;
2275         default:
2276                 /* transport controlled by the master */
2277                 return;
2278         }
2279
2280         if (session->is_auditioning()) {
2281                 session->cancel_audition ();
2282                 return;
2283         }
2284
2285         if (session->transport_rolling()) {
2286                 session->request_stop (with_abort);
2287                 if (session->get_play_loop()) {
2288                         session->request_play_loop (false);
2289                 }
2290         } else {
2291                 session->request_transport_speed (1.0f);
2292         }
2293 }
2294
2295 void
2296 Editor::play_from_start ()
2297 {
2298         session->request_locate (session->current_start_frame(), true);
2299 }
2300
2301 void
2302 Editor::play_from_edit_point ()
2303 {
2304         session->request_locate (get_preferred_edit_position(), true);
2305 }
2306
2307 void
2308 Editor::play_from_edit_point_and_return ()
2309 {
2310         nframes64_t start_frame;
2311         nframes64_t return_frame;
2312
2313         /* don't reset the return frame if its already set */
2314
2315         if ((return_frame = session->requested_return_frame()) < 0) {
2316                 return_frame = session->audible_frame();
2317         }
2318
2319         start_frame = get_preferred_edit_position (true);
2320
2321         if (start_frame >= 0) {
2322                 session->request_roll_at_and_return (start_frame, return_frame);
2323         }
2324 }
2325
2326 void
2327 Editor::play_selection ()
2328 {
2329         if (selection->time.empty()) {
2330                 return;
2331         }
2332
2333         session->request_play_range (true);
2334 }
2335
2336 void
2337 Editor::loop_selected_region ()
2338 {
2339         RegionSelection rs;
2340
2341         get_regions_for_action (rs);
2342
2343         if (!rs.empty()) {
2344                 RegionView *rv = *(rs.begin());
2345                 Location* tll;
2346
2347                 if ((tll = transport_loop_location()) != 0)  {
2348
2349                         tll->set (rv->region()->position(), rv->region()->last_frame());
2350
2351                         // enable looping, reposition and start rolling
2352
2353                         session->request_play_loop (true);
2354                         session->request_locate (tll->start(), false);
2355                         session->request_transport_speed (1.0f);
2356                 }
2357         }
2358 }
2359
2360 void
2361 Editor::play_location (Location& location)
2362 {
2363         if (location.start() <= location.end()) {
2364                 return;
2365         }
2366
2367         session->request_bounded_roll (location.start(), location.end());
2368 }
2369
2370 void
2371 Editor::loop_location (Location& location)
2372 {
2373         if (location.start() <= location.end()) {
2374                 return;
2375         }
2376
2377         Location* tll;
2378
2379         if ((tll = transport_loop_location()) != 0) {
2380                 tll->set (location.start(), location.end());
2381
2382                 // enable looping, reposition and start rolling
2383                 session->request_play_loop (true);
2384                 session->request_locate (tll->start(), true);
2385         }
2386 }
2387
2388 void
2389 Editor::raise_region ()
2390 {
2391         selection->foreach_region (&Region::raise);
2392 }
2393
2394 void
2395 Editor::raise_region_to_top ()
2396 {
2397         selection->foreach_region (&Region::raise_to_top);
2398 }
2399
2400 void
2401 Editor::lower_region ()
2402 {
2403         selection->foreach_region (&Region::lower);
2404 }
2405
2406 void
2407 Editor::lower_region_to_bottom ()
2408 {
2409         selection->foreach_region (&Region::lower_to_bottom);
2410 }
2411
2412 /** Show the region editor for the selected regions */
2413 void
2414 Editor::edit_region ()
2415 {
2416         selection->foreach_regionview (&RegionView::show_region_editor);
2417 }
2418
2419 void
2420 Editor::rename_region()
2421 {
2422         RegionSelection rs;
2423
2424         get_regions_for_action (rs);
2425
2426         if (rs.empty()) {
2427                 return;
2428         }
2429
2430         WindowTitle title (Glib::get_application_name());
2431         title += _("Rename Region");
2432
2433         ArdourDialog d (*this, title.get_string(), true, false);
2434         Entry entry;
2435         Label label (_("New name:"));
2436         HBox hbox;
2437
2438         hbox.set_spacing (6);
2439         hbox.pack_start (label, false, false);
2440         hbox.pack_start (entry, true, true);
2441
2442         d.get_vbox()->set_border_width (12);
2443         d.get_vbox()->pack_start (hbox, false, false);
2444
2445         d.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
2446         d.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
2447
2448         d.set_size_request (300, -1);
2449         d.set_position (Gtk::WIN_POS_MOUSE);
2450
2451         entry.set_text (rs.front()->region()->name());
2452         entry.select_region (0, -1);
2453
2454         entry.signal_activate().connect (bind (mem_fun (d, &Dialog::response), RESPONSE_OK));
2455
2456         d.show_all ();
2457
2458         entry.grab_focus();
2459
2460         int ret = d.run();
2461
2462         d.hide ();
2463
2464         if (ret == RESPONSE_OK) {
2465                 std::string str = entry.get_text();
2466                 strip_whitespace_edges (str);
2467                 if (!str.empty()) {
2468                         rs.front()->region()->set_name (str);
2469                         redisplay_regions ();
2470                 }
2471         }
2472 }
2473
2474 void
2475 Editor::audition_playlist_region_via_route (boost::shared_ptr<Region> region, Route& route)
2476 {
2477         if (session->is_auditioning()) {
2478                 session->cancel_audition ();
2479         }
2480
2481         // note: some potential for creativity here, because region doesn't
2482         // have to belong to the playlist that Route is handling
2483
2484         // bool was_soloed = route.soloed();
2485
2486         route.set_solo (true, this);
2487
2488         session->request_bounded_roll (region->position(), region->position() + region->length());
2489
2490         /* XXX how to unset the solo state ? */
2491 }
2492
2493 /** Start an audition of the first selected region */
2494 void
2495 Editor::play_edit_range ()
2496 {
2497         nframes64_t start, end;
2498
2499         if (get_edit_op_range (start, end)) {
2500                 session->request_bounded_roll (start, end);
2501         }
2502 }
2503
2504 void
2505 Editor::play_selected_region ()
2506 {
2507         nframes64_t start = max_frames;
2508         nframes64_t end = 0;
2509         RegionSelection rs;
2510
2511         get_regions_for_action (rs);
2512
2513         if (rs.empty()) {
2514                 return;
2515         }
2516
2517         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2518                 if ((*i)->region()->position() < start) {
2519                         start = (*i)->region()->position();
2520                 }
2521                 if ((*i)->region()->last_frame() + 1 > end) {
2522                         end = (*i)->region()->last_frame() + 1;
2523                 }
2524         }
2525
2526         session->request_stop ();
2527         session->request_bounded_roll (start, end);
2528 }
2529
2530 void
2531 Editor::audition_playlist_region_standalone (boost::shared_ptr<Region> region)
2532 {
2533         session->audition_region (region);
2534 }
2535
2536 void
2537 Editor::build_interthread_progress_window ()
2538 {
2539         interthread_progress_window = new ArdourDialog (X_("interthread progress"), true);
2540
2541         interthread_progress_bar.set_orientation (Gtk::PROGRESS_LEFT_TO_RIGHT);
2542
2543         interthread_progress_window->get_vbox()->pack_start (interthread_progress_label, false, false);
2544         interthread_progress_window->get_vbox()->pack_start (interthread_progress_bar,false, false);
2545
2546         // GTK2FIX: this button needs a modifiable label
2547
2548         Button* b = interthread_progress_window->add_button (Stock::CANCEL, RESPONSE_CANCEL);
2549         b->signal_clicked().connect (mem_fun(*this, &Editor::interthread_cancel_clicked));
2550
2551         interthread_cancel_button.add (interthread_cancel_label);
2552
2553         interthread_progress_window->set_default_size (200, 100);
2554 }
2555
2556 void
2557 Editor::interthread_cancel_clicked ()
2558 {
2559         if (current_interthread_info) {
2560                 current_interthread_info->cancel = true;
2561         }
2562 }
2563
2564 void
2565 Editor::region_from_selection ()
2566 {
2567         if (clicked_axisview == 0) {
2568                 return;
2569         }
2570
2571         if (selection->time.empty()) {
2572                 return;
2573         }
2574
2575         nframes_t start = selection->time[clicked_selection].start;
2576         nframes_t end = selection->time[clicked_selection].end;
2577
2578         nframes_t selection_cnt = end - start + 1;
2579
2580         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2581                 boost::shared_ptr<AudioRegion> current;
2582                 boost::shared_ptr<Region> current_r;
2583                 boost::shared_ptr<Playlist> pl;
2584
2585                 nframes_t internal_start;
2586                 string new_name;
2587
2588                 if ((pl = (*i)->playlist()) == 0) {
2589                         continue;
2590                 }
2591
2592                 if ((current_r = pl->top_region_at (start)) == 0) {
2593                         continue;
2594                 }
2595
2596                 current = boost::dynamic_pointer_cast<AudioRegion> (current_r);
2597                 assert(current); // FIXME
2598                 if (current != 0) {
2599                         internal_start = start - current->position();
2600                         session->region_name (new_name, current->name(), true);
2601                         boost::shared_ptr<Region> region (RegionFactory::create (current, internal_start, selection_cnt, new_name));
2602                 }
2603         }
2604 }
2605
2606 void
2607 Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_regions)
2608 {
2609         if (selection->time.empty() || selection->tracks.empty()) {
2610                 return;
2611         }
2612
2613         nframes_t start = selection->time[clicked_selection].start;
2614         nframes_t end = selection->time[clicked_selection].end;
2615
2616         sort_track_selection ();
2617
2618         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
2619
2620                 boost::shared_ptr<AudioRegion> current;
2621                 boost::shared_ptr<Region> current_r;
2622                 boost::shared_ptr<Playlist> playlist;
2623                 nframes_t internal_start;
2624                 string new_name;
2625
2626                 if ((playlist = (*i)->playlist()) == 0) {
2627                         continue;
2628                 }
2629
2630                 if ((current_r = playlist->top_region_at(start)) == 0) {
2631                         continue;
2632                 }
2633
2634                 if ((current = boost::dynamic_pointer_cast<AudioRegion>(current_r)) == 0) {
2635                         continue;
2636                 }
2637
2638                 internal_start = start - current->position();
2639                 session->region_name (new_name, current->name(), true);
2640
2641                 new_regions.push_back (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (current, internal_start, end - start + 1, new_name)));
2642         }
2643 }
2644
2645 void
2646 Editor::split_multichannel_region ()
2647 {
2648         RegionSelection rs;
2649
2650         get_regions_for_action (rs);
2651
2652         if (rs.empty()) {
2653                 return;
2654         }
2655
2656         vector<boost::shared_ptr<AudioRegion> > v;
2657
2658         for (list<RegionView*>::iterator x = rs.begin(); x != rs.end(); ++x) {
2659
2660                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*x);
2661
2662                 if (!arv || arv->audio_region()->n_channels() < 2) {
2663                         continue;
2664                 }
2665
2666                 (arv)->audio_region()->separate_by_channel (*session, v);
2667         }
2668 }
2669
2670 void
2671 Editor::new_region_from_selection ()
2672 {
2673         region_from_selection ();
2674         cancel_selection ();
2675 }
2676
2677 static void
2678 add_if_covered (RegionView* rv, const AudioRange* ar, RegionSelection* rs)
2679 {
2680         switch (rv->region()->coverage (ar->start, ar->end - 1)) {
2681         case OverlapNone:
2682                 break;
2683         default:
2684                 rs->push_back (rv);
2685         }
2686 }
2687
2688 void
2689 Editor::separate_regions_between (const TimeSelection& ts)
2690 {
2691         bool in_command = false;
2692         boost::shared_ptr<Playlist> playlist;
2693         RegionSelection new_selection;
2694         TrackSelection tmptracks;
2695
2696         if (selection->tracks.empty()) {
2697
2698                 /* use tracks with selected regions */
2699
2700                 RegionSelection rs;
2701
2702                 get_regions_for_action (rs);
2703
2704                 for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2705                         TimeAxisView* tv = &(*i)->get_time_axis_view();
2706
2707                         if (find (tmptracks.begin(), tmptracks.end(), tv) == tmptracks.end()) {
2708                                 tmptracks.push_back (tv);
2709                         }
2710                 }
2711
2712                 if (tmptracks.empty()) {
2713                         /* no regions selected: use all tracks */
2714                         tmptracks = track_views;
2715                 }
2716
2717         } else {
2718
2719                 tmptracks = selection->tracks;
2720
2721         }
2722
2723         sort_track_selection (&tmptracks);
2724
2725
2726
2727
2728         for (TrackSelection::iterator i = tmptracks.begin(); i != tmptracks.end(); ++i) {
2729
2730                 RouteTimeAxisView* rtv;
2731
2732                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2733
2734                         if (rtv->is_track()) {
2735
2736                                 /* no edits to destructive tracks */
2737
2738                                 if (rtv->track()->diskstream()->destructive()) {
2739                                         continue;
2740                                 }
2741
2742                                 if ((playlist = rtv->playlist()) != 0) {
2743
2744                                         XMLNode *before;
2745                                         bool got_some;
2746
2747                                         before = &(playlist->get_state());
2748                                         got_some = false;
2749
2750                                         /* XXX need to consider musical time selections here at some point */
2751
2752                                         double speed = rtv->get_diskstream()->speed();
2753
2754
2755                                         for (list<AudioRange>::const_iterator t = ts.begin(); t != ts.end(); ++t) {
2756
2757                                                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
2758                                                 latest_regionviews.clear ();
2759
2760                                                 playlist->partition ((nframes_t)((*t).start * speed), (nframes_t)((*t).end * speed), true);
2761
2762                                                 c.disconnect ();
2763
2764                                                 if (!latest_regionviews.empty()) {
2765
2766                                                         got_some = true;
2767
2768                                                         rtv->view()->foreach_regionview (bind (sigc::ptr_fun (add_if_covered), &(*t), &new_selection));
2769
2770                                                         if (!in_command) {
2771                                                                 begin_reversible_command (_("separate"));
2772                                                                 in_command = true;
2773                                                         }
2774
2775                                                         session->add_command(new MementoCommand<Playlist>(*playlist, before, &playlist->get_state()));
2776
2777                                                 }
2778                                         }
2779
2780                                         if (!got_some) {
2781                                                 delete before;
2782                                         }
2783                                 }
2784                         }
2785                 }
2786         }
2787
2788         if (in_command) {
2789                 selection->set (new_selection);
2790                 set_mouse_mode (MouseObject);
2791
2792                 commit_reversible_command ();
2793         }
2794 }
2795
2796 void
2797 Editor::separate_region_from_selection ()
2798 {
2799         /* preferentially use *all* ranges in the time selection if we're in range mode
2800            to allow discontiguous operation, since get_edit_op_range() currently
2801            returns a single range.
2802         */
2803         if (mouse_mode == MouseRange && !selection->time.empty()) {
2804
2805                 separate_regions_between (selection->time);
2806
2807         } else {
2808
2809                 nframes64_t start;
2810                 nframes64_t end;
2811
2812                 if (get_edit_op_range (start, end)) {
2813
2814                         AudioRange ar (start, end, 1);
2815                         TimeSelection ts;
2816                         ts.push_back (ar);
2817
2818                         separate_regions_between (ts);
2819                 }
2820         }
2821 }
2822
2823 void
2824 Editor::separate_region_from_punch ()
2825 {
2826         Location* loc  = session->locations()->auto_punch_location();
2827         if (loc) {
2828                 separate_regions_using_location (*loc);
2829         }
2830 }
2831
2832 void
2833 Editor::separate_region_from_loop ()
2834 {
2835         Location* loc  = session->locations()->auto_loop_location();
2836         if (loc) {
2837                 separate_regions_using_location (*loc);
2838         }
2839 }
2840
2841 void
2842 Editor::separate_regions_using_location (Location& loc)
2843 {
2844         if (loc.is_mark()) {
2845                 return;
2846         }
2847
2848         AudioRange ar (loc.start(), loc.end(), 1);
2849         TimeSelection ts;
2850
2851         ts.push_back (ar);
2852
2853         separate_regions_between (ts);
2854 }
2855
2856 void
2857 Editor::crop_region_to_selection ()
2858 {
2859         if (!selection->time.empty()) {
2860
2861                 crop_region_to (selection->time.start(), selection->time.end_frame());
2862
2863         } else {
2864
2865                 nframes64_t start;
2866                 nframes64_t end;
2867
2868                 if (get_edit_op_range (start, end)) {
2869                         crop_region_to (start, end);
2870                 }
2871         }
2872
2873 }
2874
2875 void
2876 Editor::crop_region_to (nframes_t start, nframes_t end)
2877 {
2878         vector<boost::shared_ptr<Playlist> > playlists;
2879         boost::shared_ptr<Playlist> playlist;
2880         TrackSelection* ts;
2881
2882         if (selection->tracks.empty()) {
2883                 ts = &track_views;
2884         } else {
2885                 sort_track_selection ();
2886                 ts = &selection->tracks;
2887         }
2888
2889         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
2890
2891                 RouteTimeAxisView* rtv;
2892
2893                 if ((rtv = dynamic_cast<RouteTimeAxisView*> ((*i))) != 0) {
2894
2895                         boost::shared_ptr<Track> t = rtv->track();
2896
2897                         if (t != 0 && ! t->diskstream()->destructive()) {
2898
2899                                 if ((playlist = rtv->playlist()) != 0) {
2900                                         playlists.push_back (playlist);
2901                                 }
2902                         }
2903                 }
2904         }
2905
2906         if (playlists.empty()) {
2907                 return;
2908         }
2909
2910         nframes_t the_start;
2911         nframes_t the_end;
2912         nframes_t cnt;
2913
2914         begin_reversible_command (_("trim to selection"));
2915
2916         for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
2917
2918                 boost::shared_ptr<Region> region;
2919
2920                 the_start = start;
2921
2922                 if ((region = (*i)->top_region_at(the_start)) == 0) {
2923                         continue;
2924                 }
2925
2926                 /* now adjust lengths to that we do the right thing
2927                    if the selection extends beyond the region
2928                 */
2929
2930                 the_start = max (the_start, region->position());
2931                 if (max_frames - the_start < region->length()) {
2932                         the_end = the_start + region->length() - 1;
2933                 } else {
2934                         the_end = max_frames;
2935                 }
2936                 the_end = min (end, the_end);
2937                 cnt = the_end - the_start + 1;
2938
2939                 XMLNode &before = (*i)->get_state();
2940                 region->trim_to (the_start, cnt, this);
2941                 XMLNode &after = (*i)->get_state();
2942                 session->add_command (new MementoCommand<Playlist>(*(*i), &before, &after));
2943         }
2944
2945         commit_reversible_command ();
2946 }
2947
2948 void
2949 Editor::region_fill_track ()
2950 {
2951         nframes_t end;
2952         RegionSelection rs;
2953
2954         get_regions_for_action (rs);
2955
2956         if (!session || rs.empty()) {
2957                 return;
2958         }
2959
2960         end = session->current_end_frame ();
2961
2962         begin_reversible_command (_("region fill"));
2963
2964         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
2965
2966                 boost::shared_ptr<Region> region ((*i)->region());
2967
2968                 // FIXME
2969                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
2970                 assert(ar);
2971
2972                 boost::shared_ptr<Playlist> pl = region->playlist();
2973
2974                 if (end <= region->last_frame()) {
2975                         return;
2976                 }
2977
2978                 double times = (double) (end - region->last_frame()) / (double) region->length();
2979
2980                 if (times == 0) {
2981                         return;
2982                 }
2983
2984                 XMLNode &before = pl->get_state();
2985                 pl->add_region (RegionFactory::create (ar), ar->last_frame(), times);
2986                 session->add_command (new MementoCommand<Playlist>(*pl, &before, &pl->get_state()));
2987         }
2988
2989         commit_reversible_command ();
2990 }
2991
2992 void
2993 Editor::region_fill_selection ()
2994 {
2995         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
2996                 return;
2997         }
2998
2999         if (selection->time.empty()) {
3000                 return;
3001         }
3002
3003
3004         Glib::RefPtr<TreeSelection> selected = region_list_display.get_selection();
3005
3006         if (selected->count_selected_rows() != 1) {
3007                 return;
3008         }
3009
3010         TreeModel::iterator i = region_list_display.get_selection()->get_selected();
3011         boost::shared_ptr<Region> region = (*i)[region_list_columns.region];
3012
3013         nframes_t start = selection->time[clicked_selection].start;
3014         nframes_t end = selection->time[clicked_selection].end;
3015
3016         boost::shared_ptr<Playlist> playlist;
3017
3018         if (selection->tracks.empty()) {
3019                 return;
3020         }
3021
3022         nframes_t selection_length = end - start;
3023         float times = (float)selection_length / region->length();
3024
3025         begin_reversible_command (_("fill selection"));
3026
3027         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
3028
3029                 if ((playlist = (*i)->playlist()) == 0) {
3030                         continue;
3031                 }
3032
3033                 XMLNode &before = playlist->get_state();
3034                 playlist->add_region (RegionFactory::create (region), start, times);
3035                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
3036         }
3037
3038         commit_reversible_command ();
3039 }
3040
3041 void
3042 Editor::set_region_sync_from_edit_point ()
3043 {
3044         nframes64_t where = get_preferred_edit_position ();
3045         RegionSelection rs;
3046         get_regions_for_action (rs);
3047         set_sync_point (where, rs);
3048 }
3049
3050 void
3051 Editor::set_sync_point (nframes64_t where, const RegionSelection& rs)
3052 {
3053         bool in_command = false;
3054
3055         for (RegionSelection::const_iterator r = rs.begin(); r != rs.end(); ++r) {
3056
3057                 if (!(*r)->region()->covers (where)) {
3058                         continue;
3059                 }
3060
3061                 boost::shared_ptr<Region> region ((*r)->region());
3062
3063                 if (!in_command) {
3064                         begin_reversible_command (_("set sync point"));
3065                         in_command = true;
3066                 }
3067
3068                 XMLNode &before = region->playlist()->get_state();
3069                 region->set_sync_position (get_preferred_edit_position());
3070                 XMLNode &after = region->playlist()->get_state();
3071                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3072         }
3073
3074         if (in_command) {
3075                 commit_reversible_command ();
3076         }
3077 }
3078
3079 /** Remove the sync positions of the selection */
3080 void
3081 Editor::remove_region_sync ()
3082 {
3083         begin_reversible_command (_("remove sync"));
3084
3085         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
3086                 boost::shared_ptr<Region> r = (*i)->region();
3087                 XMLNode &before = r->playlist()->get_state();
3088                 r->clear_sync_position ();
3089                 XMLNode &after = r->playlist()->get_state();
3090                 session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
3091         }
3092
3093         commit_reversible_command ();
3094 }
3095
3096 void
3097 Editor::naturalize ()
3098 {
3099         RegionSelection rs;
3100
3101         get_regions_for_action (rs);
3102
3103         if (rs.empty()) {
3104                 return;
3105         }
3106
3107         begin_reversible_command (_("naturalize"));
3108         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
3109                 XMLNode &before = (*i)->region()->get_state();
3110                 (*i)->region()->move_to_natural_position (this);
3111                 XMLNode &after = (*i)->region()->get_state();
3112                 session->add_command (new MementoCommand<Region>(*((*i)->region().get()), &before, &after));
3113         }
3114         commit_reversible_command ();
3115 }
3116
3117 void
3118 Editor::align (RegionPoint what)
3119 {
3120         RegionSelection rs;
3121
3122         get_regions_for_action (rs, false);
3123         nframes64_t where = get_preferred_edit_position();
3124
3125         if (!rs.empty()) {
3126                 align_selection (what, where, rs);
3127         } else {
3128
3129                 RegionSelection rs;
3130                 get_regions_at (rs, where, selection->tracks);
3131                 align_selection (what, where, rs);
3132         }
3133 }
3134
3135 void
3136 Editor::align_relative (RegionPoint what)
3137 {
3138         nframes64_t where = get_preferred_edit_position();
3139         RegionSelection rs;
3140
3141         get_regions_for_action (rs, false);
3142
3143         if (!rs.empty()) {
3144                 align_selection_relative (what, where, rs);
3145         }
3146 }
3147
3148 struct RegionSortByTime {
3149     bool operator() (const RegionView* a, const RegionView* b) {
3150             return a->region()->position() < b->region()->position();
3151     }
3152 };
3153
3154 void
3155 Editor::align_selection_relative (RegionPoint point, nframes_t position, const RegionSelection& rs)
3156 {
3157         if (rs.empty()) {
3158                 return;
3159         }
3160
3161         nframes_t distance = 0;
3162         nframes_t pos = 0;
3163         int dir = 0;
3164
3165         list<RegionView*> sorted;
3166         rs.by_position (sorted);
3167         boost::shared_ptr<Region> r ((*sorted.begin())->region());
3168
3169         switch (point) {
3170         case Start:
3171                 pos = position;
3172                 if (position > r->position()) {
3173                         distance = position - r->position();
3174                         dir = 1;
3175                 } else {
3176                         distance = r->position() - position;
3177                         dir = -1;
3178                 }
3179                 break;
3180
3181         case End:
3182                 if (position > r->last_frame()) {
3183                         distance = position - r->last_frame();
3184                         pos = r->position() + distance;
3185                         dir = 1;
3186                 } else {
3187                         distance = r->last_frame() - position;
3188                         pos = r->position() - distance;
3189                         dir = -1;
3190                 }
3191                 break;
3192
3193         case SyncPoint:
3194                 pos = r->adjust_to_sync (position);
3195                 if (pos > r->position()) {
3196                         distance = pos - r->position();
3197                         dir = 1;
3198                 } else {
3199                         distance = r->position() - pos;
3200                         dir = -1;
3201                 }
3202                 break;
3203         }
3204
3205         if (pos == r->position()) {
3206                 return;
3207         }
3208
3209         begin_reversible_command (_("align selection (relative)"));
3210
3211         /* move first one specially */
3212
3213         XMLNode &before = r->playlist()->get_state();
3214         r->set_position (pos, this);
3215         XMLNode &after = r->playlist()->get_state();
3216         session->add_command(new MementoCommand<Playlist>(*(r->playlist()), &before, &after));
3217
3218         /* move rest by the same amount */
3219
3220         sorted.pop_front();
3221
3222         for (list<RegionView*>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
3223
3224                 boost::shared_ptr<Region> region ((*i)->region());
3225
3226                 XMLNode &before = region->playlist()->get_state();
3227
3228                 if (dir > 0) {
3229                         region->set_position (region->position() + distance, this);
3230                 } else {
3231                         region->set_position (region->position() - distance, this);
3232                 }
3233
3234                 XMLNode &after = region->playlist()->get_state();
3235                 session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3236
3237         }
3238
3239         commit_reversible_command ();
3240 }
3241
3242 void
3243 Editor::align_selection (RegionPoint point, nframes_t position, const RegionSelection& rs)
3244 {
3245         if (rs.empty()) {
3246                 return;
3247         }
3248
3249         begin_reversible_command (_("align selection"));
3250
3251         for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
3252                 align_region_internal ((*i)->region(), point, position);
3253         }
3254
3255         commit_reversible_command ();
3256 }
3257
3258 void
3259 Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, nframes_t position)
3260 {
3261         begin_reversible_command (_("align region"));
3262         align_region_internal (region, point, position);
3263         commit_reversible_command ();
3264 }
3265
3266 void
3267 Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, nframes_t position)
3268 {
3269         XMLNode &before = region->playlist()->get_state();
3270
3271         switch (point) {
3272         case SyncPoint:
3273                 region->set_position (region->adjust_to_sync (position), this);
3274                 break;
3275
3276         case End:
3277                 if (position > region->length()) {
3278                         region->set_position (position - region->length(), this);
3279                 }
3280                 break;
3281
3282         case Start:
3283                 region->set_position (position, this);
3284                 break;
3285         }
3286
3287         XMLNode &after = region->playlist()->get_state();
3288         session->add_command(new MementoCommand<Playlist>(*(region->playlist()), &before, &after));
3289 }
3290
3291 /** Trim the end of the selected regions to the position of the edit cursor */
3292 void
3293 Editor::trim_region_to_loop ()
3294 {
3295         Location* loc = session->locations()->auto_loop_location();
3296         if (!loc) {
3297                 return;
3298         }
3299         trim_region_to_location (*loc, _("trim to loop"));
3300 }
3301
3302 void
3303 Editor::trim_region_to_punch ()
3304 {
3305         Location* loc = session->locations()->auto_punch_location();
3306         if (!loc) {
3307                 return;
3308         }
3309         trim_region_to_location (*loc, _("trim to punch"));
3310 }
3311 void
3312 Editor::trim_region_to_location (const Location& loc, const char* str)
3313 {
3314         RegionSelection rs;
3315
3316         get_regions_for_action (rs);
3317
3318         begin_reversible_command (str);
3319
3320         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3321                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3322
3323                 if (!arv) {
3324                         continue;
3325                 }
3326
3327                 /* require region to span proposed trim */
3328
3329                 switch (arv->region()->coverage (loc.start(), loc.end())) {
3330                 case OverlapInternal:
3331                         break;
3332                 default:
3333                         continue;
3334                 }
3335
3336                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3337
3338                 if (!atav) {
3339                         return;
3340                 }
3341
3342                 float speed = 1.0;
3343                 nframes_t start;
3344                 nframes_t end;
3345
3346                 if (atav->get_diskstream() != 0) {
3347                         speed = atav->get_diskstream()->speed();
3348                 }
3349
3350                 start = session_frame_to_track_frame (loc.start(), speed);
3351                 end = session_frame_to_track_frame (loc.end(), speed);
3352
3353                 XMLNode &before = arv->region()->playlist()->get_state();
3354                 arv->region()->trim_to (start, (end - start), this);
3355                 XMLNode &after = arv->region()->playlist()->get_state();
3356                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3357         }
3358
3359         commit_reversible_command ();
3360 }
3361
3362 void
3363 Editor::trim_region_to_edit_point ()
3364 {
3365         RegionSelection rs;
3366
3367         get_regions_for_action (rs);
3368
3369         nframes64_t where = get_preferred_edit_position();
3370
3371         begin_reversible_command (_("trim region start to edit point"));
3372
3373         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3374                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3375
3376                 if (!arv) {
3377                         continue;
3378                 }
3379
3380                 /* require region to cover trim */
3381
3382                 if (!arv->region()->covers (where)) {
3383                         continue;
3384                 }
3385
3386                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3387
3388                 if (!atav) {
3389                         return;
3390                 }
3391
3392                 float speed = 1.0;
3393
3394                 if (atav->get_diskstream() != 0) {
3395                         speed = atav->get_diskstream()->speed();
3396                 }
3397
3398                 XMLNode &before = arv->region()->playlist()->get_state();
3399                 arv->region()->trim_end( session_frame_to_track_frame(where, speed), this);
3400                 XMLNode &after = arv->region()->playlist()->get_state();
3401                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3402         }
3403
3404         commit_reversible_command ();
3405 }
3406
3407 void
3408 Editor::trim_region_from_edit_point ()
3409 {
3410         RegionSelection rs;
3411
3412         get_regions_for_action (rs);
3413
3414         nframes64_t where = get_preferred_edit_position();
3415
3416         begin_reversible_command (_("trim region end to edit point"));
3417
3418         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3419                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*x);
3420
3421                 if (!arv) {
3422                         continue;
3423                 }
3424
3425                 /* require region to cover trim */
3426
3427                 if (!arv->region()->covers (where)) {
3428                         continue;
3429                 }
3430
3431                 AudioTimeAxisView* atav = dynamic_cast<AudioTimeAxisView*> (&arv->get_time_axis_view());
3432
3433                 if (!atav) {
3434                         return;
3435                 }
3436
3437                 float speed = 1.0;
3438
3439                 if (atav->get_diskstream() != 0) {
3440                         speed = atav->get_diskstream()->speed();
3441                 }
3442
3443                 XMLNode &before = arv->region()->playlist()->get_state();
3444                 arv->region()->trim_front ( session_frame_to_track_frame(where, speed), this);
3445                 XMLNode &after = arv->region()->playlist()->get_state();
3446                 session->add_command(new MementoCommand<Playlist>(*(arv->region()->playlist()), &before, &after));
3447         }
3448
3449         commit_reversible_command ();
3450 }
3451
3452 void
3453 Editor::unfreeze_route ()
3454 {
3455         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3456                 return;
3457         }
3458
3459         clicked_routeview->audio_track()->unfreeze ();
3460 }
3461
3462 void*
3463 Editor::_freeze_thread (void* arg)
3464 {
3465         PBD::ThreadCreated (pthread_self(), X_("Freeze"));
3466         return static_cast<Editor*>(arg)->freeze_thread ();
3467 }
3468
3469 void*
3470 Editor::freeze_thread ()
3471 {
3472         clicked_routeview->audio_track()->freeze (*current_interthread_info);
3473         return 0;
3474 }
3475
3476 gint
3477 Editor::freeze_progress_timeout (void *arg)
3478 {
3479         interthread_progress_bar.set_fraction (current_interthread_info->progress/100);
3480         return !(current_interthread_info->done || current_interthread_info->cancel);
3481 }
3482
3483 void
3484 Editor::freeze_route ()
3485 {
3486         if (clicked_routeview == 0 || !clicked_routeview->is_audio_track()) {
3487                 return;
3488         }
3489
3490         InterThreadInfo itt;
3491
3492         if (interthread_progress_window == 0) {
3493                 build_interthread_progress_window ();
3494         }
3495
3496         WindowTitle title(Glib::get_application_name());
3497         title += _("Freeze");
3498         interthread_progress_window->set_title (title.get_string());
3499         interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
3500         interthread_progress_window->show_all ();
3501         interthread_progress_bar.set_fraction (0.0f);
3502         interthread_progress_label.set_text ("");
3503         interthread_cancel_label.set_text (_("Cancel Freeze"));
3504         current_interthread_info = &itt;
3505
3506         interthread_progress_connection =
3507           Glib::signal_timeout().connect (bind (mem_fun(*this, &Editor::freeze_progress_timeout), (gpointer) 0), 100);
3508
3509         itt.done = false;
3510         itt.cancel = false;
3511         itt.progress = 0.0f;
3512
3513         pthread_attr_t attr;
3514         pthread_attr_init(&attr);
3515         pthread_attr_setstacksize(&attr, 500000);
3516
3517         pthread_create (&itt.thread, &attr, _freeze_thread, this);
3518
3519         pthread_attr_destroy(&attr);
3520
3521         track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
3522
3523         while (!itt.done && !itt.cancel) {
3524                 gtk_main_iteration ();
3525         }
3526
3527         interthread_progress_connection.disconnect ();
3528         interthread_progress_window->hide_all ();
3529         current_interthread_info = 0;
3530         track_canvas.get_window()->set_cursor (*current_canvas_cursor);
3531 }
3532
3533 void
3534 Editor::bounce_range_selection ()
3535 {
3536         if (selection->time.empty()) {
3537                 return;
3538         }
3539
3540         TrackSelection views = selection->tracks;
3541
3542         nframes_t start = selection->time[clicked_selection].start;
3543         nframes_t end = selection->time[clicked_selection].end;
3544         nframes_t cnt = end - start + 1;
3545
3546         begin_reversible_command (_("bounce range"));
3547
3548         for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
3549
3550                 RouteTimeAxisView* rtv;
3551
3552                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*i)) == 0) {
3553                         continue;
3554                 }
3555
3556                 boost::shared_ptr<Playlist> playlist;
3557
3558                 if ((playlist = rtv->playlist()) == 0) {
3559                         return;
3560                 }
3561
3562                 InterThreadInfo itt;
3563
3564                 itt.done = false;
3565                 itt.cancel = false;
3566                 itt.progress = false;
3567
3568                 XMLNode &before = playlist->get_state();
3569                 rtv->track()->bounce_range (start, cnt, itt);
3570                 XMLNode &after = playlist->get_state();
3571                 session->add_command (new MementoCommand<Playlist> (*playlist, &before, &after));
3572         }
3573
3574         commit_reversible_command ();
3575 }
3576
3577 /** Cut selected regions, automation points or a time range */
3578 void
3579 Editor::cut ()
3580 {
3581         cut_copy (Cut);
3582 }
3583
3584 /** Copy selected regions, automation points or a time range */
3585 void
3586 Editor::copy ()
3587 {
3588         cut_copy (Copy);
3589 }
3590
3591
3592 /** @return true if a Cut, Copy or Clear is possible */
3593 bool
3594 Editor::can_cut_copy () const
3595 {
3596         switch (current_mouse_mode()) {
3597
3598         case MouseObject:
3599                 if (!selection->regions.empty() || !selection->points.empty()) {
3600                         return true;
3601                 }
3602                 break;
3603
3604         case MouseRange:
3605                 if (!selection->time.empty()) {
3606                         return true;
3607                 }
3608                 break;
3609
3610         default:
3611                 break;
3612         }
3613
3614         return false;
3615 }
3616
3617
3618 /** Cut, copy or clear selected regions, automation points or a time range.
3619  * @param op Operation (Cut, Copy or Clear)
3620  */
3621 void
3622 Editor::cut_copy (CutCopyOp op)
3623 {
3624         /* only cancel selection if cut/copy is successful.*/
3625
3626         string opname;
3627
3628         switch (op) {
3629         case Cut:
3630                 opname = _("cut");
3631                 break;
3632         case Copy:
3633                 opname = _("copy");
3634                 break;
3635         case Clear:
3636                 opname = _("clear");
3637                 break;
3638         }
3639
3640         cut_buffer->clear ();
3641
3642         if (entered_marker) {
3643
3644                 /* cut/delete op while pointing at a marker */
3645
3646                 bool ignored;
3647                 Location* loc = find_location_from_marker (entered_marker, ignored);
3648
3649                 if (session && loc) {
3650                         Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::really_remove_marker), loc));
3651                 }
3652
3653                 return;
3654         }
3655
3656         RegionSelection rs;
3657
3658         get_regions_for_action (rs);
3659
3660         switch (current_mouse_mode()) {
3661         case MouseObject:
3662                 if (!rs.empty() || !selection->points.empty()) {
3663
3664                         begin_reversible_command (opname + _(" objects"));
3665
3666                         if (!rs.empty()) {
3667                                 cut_copy_regions (op);
3668
3669                                 if (op == Cut) {
3670                                         selection->clear_regions ();
3671                                 }
3672                         }
3673
3674                         if (!selection->points.empty()) {
3675                                 cut_copy_points (op);
3676
3677                                 if (op == Cut) {
3678                                         selection->clear_points ();
3679                                 }
3680                         }
3681
3682                         commit_reversible_command ();
3683                         break; // terminate case statement here
3684                 }
3685                 if (!selection->time.empty()) {
3686                         /* don't cause suprises */
3687                         break;
3688                 }
3689                 // fall thru if there was nothing selected
3690
3691         case MouseRange:
3692                 if (selection->time.empty()) {
3693                         nframes64_t start, end;
3694                         if (!get_edit_op_range (start, end)) {
3695                                 return;
3696                         }
3697                         selection->set ((TimeAxisView*) 0, start, end);
3698                 }
3699
3700                 begin_reversible_command (opname + _(" range"));
3701                 cut_copy_ranges (op);
3702                 commit_reversible_command ();
3703
3704                 if (op == Cut) {
3705                         selection->clear_time ();
3706                 }
3707
3708                 break;
3709
3710         default:
3711                 break;
3712         }
3713 }
3714
3715 /** Cut, copy or clear selected automation points.
3716  * @param op Operation (Cut, Copy or Clear)
3717  */
3718 void
3719 Editor::cut_copy_points (CutCopyOp op)
3720 {
3721         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
3722
3723                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
3724
3725                 if (atv) {
3726                         atv->cut_copy_clear_objects (selection->points, op);
3727                 }
3728         }
3729 }
3730
3731 struct PlaylistState {
3732     boost::shared_ptr<Playlist> playlist;
3733     XMLNode*  before;
3734 };
3735
3736 struct lt_playlist {
3737     bool operator () (const PlaylistState& a, const PlaylistState& b) {
3738             return a.playlist < b.playlist;
3739     }
3740 };
3741
3742 struct PlaylistMapping {
3743     TimeAxisView* tv;
3744     boost::shared_ptr<Playlist> pl;
3745
3746     PlaylistMapping (TimeAxisView* tvp) : tv (tvp) {}
3747 };
3748
3749
3750 /** Cut, copy or clear selected regions.
3751  * @param op Operation (Cut, Copy or Clear)
3752  */
3753 void
3754 Editor::cut_copy_regions (CutCopyOp op)
3755 {
3756         /* we can't use a std::map here because the ordering is important, and we can't trivially sort
3757            a map when we want ordered access to both elements. i think.
3758         */
3759
3760         vector<PlaylistMapping> pmap;
3761
3762         nframes_t first_position = max_frames;
3763
3764         set<PlaylistState, lt_playlist> freezelist;
3765         pair<set<PlaylistState, lt_playlist>::iterator,bool> insert_result;
3766
3767         /* get ordering correct before we cut/copy */
3768
3769         RegionSelection rs;
3770
3771         get_regions_for_action (rs);
3772         rs.sort_by_position_and_track ();
3773
3774         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
3775
3776                 first_position = min ((*x)->region()->position(), first_position);
3777
3778                 if (op == Cut || op == Clear) {
3779                         boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3780
3781                         if (pl) {
3782
3783                                 PlaylistState before;
3784                                 before.playlist = pl;
3785                                 before.before = &pl->get_state();
3786
3787                                 insert_result = freezelist.insert (before);
3788
3789                                 if (insert_result.second) {
3790                                         pl->freeze ();
3791                                 }
3792                         }
3793                 }
3794
3795                 TimeAxisView* tv = &(*x)->get_trackview();
3796                 vector<PlaylistMapping>::iterator z;
3797
3798                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3799                         if ((*z).tv == tv) {
3800                                 break;
3801                         }
3802                 }
3803
3804                 if (z == pmap.end()) {
3805                         pmap.push_back (PlaylistMapping (tv));
3806                 }
3807         }
3808
3809         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ) {
3810
3811                 boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
3812
3813                 if (!pl) {
3814                         /* impossible, but this handles it for the future */
3815                         continue;
3816                 }
3817
3818                 TimeAxisView& tv = (*x)->get_trackview();
3819                 boost::shared_ptr<Playlist> npl;
3820                 RegionSelection::iterator tmp;
3821
3822                 tmp = x;
3823                 ++tmp;
3824
3825                 vector<PlaylistMapping>::iterator z;
3826
3827                 for (z = pmap.begin(); z != pmap.end(); ++z) {
3828                         if ((*z).tv == &tv) {
3829                                 break;
3830                         }
3831                 }
3832
3833                 assert (z != pmap.end());
3834
3835                 if (!(*z).pl) {
3836                         npl = PlaylistFactory::create (pl->data_type(), *session, "cutlist", true);
3837                         npl->freeze();
3838                         (*z).pl = npl;
3839                 } else {
3840                         npl = (*z).pl;
3841                 }
3842
3843                 boost::shared_ptr<Region> r = (*x)->region();
3844                 boost::shared_ptr<Region> _xx;
3845
3846                 assert (r != 0);
3847
3848                 switch (op) {
3849                 case Cut:
3850                         _xx = RegionFactory::create (r);
3851                         npl->add_region (_xx, r->position() - first_position);
3852                         pl->remove_region (r);
3853                         break;
3854
3855                 case Copy:
3856                         /* copy region before adding, so we're not putting same object into two different playlists */
3857                         npl->add_region (RegionFactory::create (r), r->position() - first_position);
3858                         break;
3859
3860                 case Clear:
3861                         pl->remove_region (r);
3862                         break;
3863                 }
3864
3865                 x = tmp;
3866         }
3867
3868         list<boost::shared_ptr<Playlist> > foo;
3869
3870         /* the pmap is in the same order as the tracks in which selected regions occured */
3871
3872         for (vector<PlaylistMapping>::iterator i = pmap.begin(); i != pmap.end(); ++i) {
3873                 (*i).pl->thaw();
3874                 foo.push_back ((*i).pl);
3875         }
3876
3877
3878         if (!foo.empty()) {
3879                 cut_buffer->set (foo);
3880         }
3881
3882         for (set<PlaylistState, lt_playlist>::iterator pl = freezelist.begin(); pl != freezelist.end(); ++pl) {
3883                 (*pl).playlist->thaw ();
3884                 session->add_command (new MementoCommand<Playlist>(*(*pl).playlist, (*pl).before, &(*pl).playlist->get_state()));
3885         }
3886 }
3887
3888 void
3889 Editor::cut_copy_ranges (CutCopyOp op)
3890 {
3891         TrackSelection* ts;
3892
3893         if (selection->tracks.empty()) {
3894                 ts = &track_views;
3895         } else {
3896                 ts = &selection->tracks;
3897         }
3898
3899         for (TrackSelection::iterator i = ts->begin(); i != ts->end(); ++i) {
3900                 (*i)->cut_copy_clear (*selection, op);
3901         }
3902 }
3903
3904 void
3905 Editor::paste (float times)
3906 {
3907         paste_internal (get_preferred_edit_position(), times);
3908 }
3909
3910 void
3911 Editor::mouse_paste ()
3912 {
3913         nframes64_t where;
3914         bool ignored;
3915
3916         if (!mouse_frame (where, ignored)) {
3917                 return;
3918         }
3919
3920         snap_to (where);
3921         paste_internal (where, 1);
3922 }
3923
3924 void
3925 Editor::paste_internal (nframes_t position, float times)
3926 {
3927         bool commit = false;
3928
3929         if (cut_buffer->empty()) {
3930                 return;
3931         }
3932
3933         if (position == max_frames) {
3934                 position = get_preferred_edit_position();
3935         }
3936
3937         begin_reversible_command (_("paste"));
3938
3939         TrackSelection ts;
3940         TrackSelection::iterator i;
3941         size_t nth;
3942
3943         /* get everything in the correct order */
3944
3945
3946         if (!selection->tracks.empty()) {
3947                 sort_track_selection ();
3948                 ts = selection->tracks;
3949         } else if (entered_track) {
3950                 ts.push_back (entered_track);
3951         }
3952
3953         for (nth = 0, i = ts.begin(); i != ts.end(); ++i, ++nth) {
3954
3955                 /* undo/redo is handled by individual tracks */
3956
3957                 if ((*i)->paste (position, times, *cut_buffer, nth)) {
3958                         commit = true;
3959                 }
3960         }
3961
3962         if (commit) {
3963                 commit_reversible_command ();
3964         }
3965 }
3966
3967 void
3968 Editor::paste_named_selection (float times)
3969 {
3970         TrackSelection::iterator t;
3971
3972         Glib::RefPtr<TreeSelection> selected = named_selection_display.get_selection();
3973
3974         if (selected->count_selected_rows() != 1 || selection->tracks.empty()) {
3975                 return;
3976         }
3977
3978         TreeModel::iterator i = selected->get_selected();
3979         NamedSelection* ns = (*i)[named_selection_columns.selection];
3980
3981         list<boost::shared_ptr<Playlist> >::iterator chunk;
3982         list<boost::shared_ptr<Playlist> >::iterator tmp;
3983
3984         chunk = ns->playlists.begin();
3985
3986         begin_reversible_command (_("paste chunk"));
3987
3988         sort_track_selection ();
3989
3990         for (t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
3991
3992                 RouteTimeAxisView* rtv;
3993                 boost::shared_ptr<Playlist> pl;
3994                 boost::shared_ptr<AudioPlaylist> apl;
3995
3996                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (*t)) == 0) {
3997                         continue;
3998                 }
3999
4000                 if ((pl = rtv->playlist()) == 0) {
4001                         continue;
4002                 }
4003
4004                 if ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) == 0) {
4005                         continue;
4006                 }
4007
4008                 tmp = chunk;
4009                 ++tmp;
4010
4011                 XMLNode &before = apl->get_state();
4012                 apl->paste (*chunk, get_preferred_edit_position(), times);
4013                 session->add_command(new MementoCommand<AudioPlaylist>(*apl, &before, &apl->get_state()));
4014
4015                 if (tmp != ns->playlists.end()) {
4016                         chunk = tmp;
4017                 }
4018         }
4019
4020         commit_reversible_command();
4021 }
4022
4023 void
4024 Editor::duplicate_some_regions (RegionSelection& regions, float times)
4025 {
4026         boost::shared_ptr<Playlist> playlist;
4027         RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
4028         RegionSelection foo;
4029
4030         begin_reversible_command (_("duplicate region"));
4031
4032         selection->clear_regions ();
4033
4034         for (RegionSelection::iterator i = sel.begin(); i != sel.end(); ++i) {
4035
4036                 boost::shared_ptr<Region> r ((*i)->region());
4037
4038                 TimeAxisView& tv = (*i)->get_time_axis_view();
4039                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
4040                 latest_regionviews.clear ();
4041                 sigc::connection c = rtv->view()->RegionViewAdded.connect (mem_fun(*this, &Editor::collect_new_region_view));
4042
4043                 playlist = (*i)->region()->playlist();
4044                 XMLNode &before = playlist->get_state();
4045                 playlist->duplicate (r, r->last_frame(), times);
4046                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
4047
4048                 c.disconnect ();
4049
4050                 foo.insert (foo.end(), latest_regionviews.begin(), latest_regionviews.end());
4051         }
4052
4053         commit_reversible_command ();
4054
4055         if (!foo.empty()) {
4056                 selection->set (foo);
4057         }
4058 }
4059
4060 void
4061 Editor::duplicate_selection (float times)
4062 {
4063         if (selection->time.empty() || selection->tracks.empty()) {
4064                 return;
4065         }
4066
4067         boost::shared_ptr<Playlist> playlist;
4068         vector<boost::shared_ptr<Region> > new_regions;
4069         vector<boost::shared_ptr<Region> >::iterator ri;
4070
4071         create_region_from_selection (new_regions);
4072
4073         if (new_regions.empty()) {
4074                 return;
4075         }
4076
4077         begin_reversible_command (_("duplicate selection"));
4078
4079         ri = new_regions.begin();
4080
4081         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4082                 if ((playlist = (*i)->playlist()) == 0) {
4083                         continue;
4084                 }
4085                 XMLNode &before = playlist->get_state();
4086                 playlist->duplicate (*ri, selection->time[clicked_selection].end, times);
4087                 XMLNode &after = playlist->get_state();
4088                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4089
4090                 ++ri;
4091                 if (ri == new_regions.end()) {
4092                         --ri;
4093                 }
4094         }
4095
4096         commit_reversible_command ();
4097 }
4098
4099 void
4100 Editor::reset_point_selection ()
4101 {
4102         /* reset all selected points to the relevant default value */
4103
4104         for (PointSelection::iterator i = selection->points.begin(); i != selection->points.end(); ++i) {
4105
4106                 AutomationTimeAxisView* atv = dynamic_cast<AutomationTimeAxisView*>(&(*i).track);
4107
4108                 if (atv) {
4109                         atv->reset_objects (selection->points);
4110                 }
4111         }
4112 }
4113
4114 void
4115 Editor::center_playhead ()
4116 {
4117         float page = canvas_width * frames_per_unit;
4118         center_screen_internal (playhead_cursor->current_frame, page);
4119 }
4120
4121 void
4122 Editor::center_edit_point ()
4123 {
4124         float page = canvas_width * frames_per_unit;
4125         center_screen_internal (get_preferred_edit_position(), page);
4126 }
4127
4128 void
4129 Editor::clear_playlist (boost::shared_ptr<Playlist> playlist)
4130 {
4131         begin_reversible_command (_("clear playlist"));
4132         XMLNode &before = playlist->get_state();
4133         playlist->clear ();
4134         XMLNode &after = playlist->get_state();
4135         session->add_command (new MementoCommand<Playlist>(*playlist.get(), &before, &after));
4136         commit_reversible_command ();
4137 }
4138
4139 void
4140 Editor::nudge_track (bool use_edit, bool forwards)
4141 {
4142         boost::shared_ptr<Playlist> playlist;
4143         nframes_t distance;
4144         nframes_t next_distance;
4145         nframes_t start;
4146
4147         if (use_edit) {
4148                 start = get_preferred_edit_position();
4149         } else {
4150                 start = 0;
4151         }
4152
4153         if ((distance = get_nudge_distance (start, next_distance)) == 0) {
4154                 return;
4155         }
4156
4157         if (selection->tracks.empty()) {
4158                 return;
4159         }
4160
4161         begin_reversible_command (_("nudge track"));
4162
4163         for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
4164
4165                 if ((playlist = (*i)->playlist()) == 0) {
4166                         continue;
4167                 }
4168
4169                 XMLNode &before = playlist->get_state();
4170                 playlist->nudge_after (start, distance, forwards);
4171                 XMLNode &after = playlist->get_state();
4172                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
4173         }
4174
4175         commit_reversible_command ();
4176 }
4177
4178 void
4179 Editor::remove_last_capture ()
4180 {
4181         vector<string> choices;
4182         string prompt;
4183
4184         if (!session) {
4185                 return;
4186         }
4187
4188         if (Config->get_verify_remove_last_capture()) {
4189                 prompt  = _("Do you really want to destroy the last capture?"
4190                             "\n(This is destructive and cannot be undone)");
4191
4192                 choices.push_back (_("No, do nothing."));
4193                 choices.push_back (_("Yes, destroy it."));
4194
4195                 Gtkmm2ext::Choice prompter (prompt, choices);
4196
4197                 if (prompter.run () == 1) {
4198                         session->remove_last_capture ();
4199                 }
4200
4201         } else {
4202                 session->remove_last_capture();
4203         }
4204 }
4205
4206 void
4207 Editor::normalize_region ()
4208 {
4209         RegionSelection rs;
4210
4211         get_regions_for_action (rs);
4212
4213         if (!session) {
4214                 return;
4215         }
4216
4217         if (rs.empty()) {
4218                 return;
4219         }
4220
4221         begin_reversible_command (_("normalize"));
4222
4223         track_canvas.get_window()->set_cursor (*wait_cursor);
4224         gdk_flush ();
4225
4226         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4227                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4228                 if (!arv)
4229                         continue;
4230                 XMLNode &before = arv->region()->get_state();
4231                 arv->audio_region()->normalize_to (0.0f);
4232                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4233         }
4234
4235         commit_reversible_command ();
4236         track_canvas.get_window()->set_cursor (*current_canvas_cursor);
4237 }
4238
4239
4240 void
4241 Editor::denormalize_region ()
4242 {
4243         if (!session) {
4244                 return;
4245         }
4246
4247         RegionSelection rs;
4248
4249         get_regions_for_action (rs);
4250
4251         if (rs.empty()) {
4252                 return;
4253         }
4254
4255         begin_reversible_command ("denormalize");
4256
4257         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4258                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4259                 if (!arv)
4260                         continue;
4261                 XMLNode &before = arv->region()->get_state();
4262                 arv->audio_region()->set_scale_amplitude (1.0f);
4263                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4264         }
4265
4266         commit_reversible_command ();
4267 }
4268
4269 void
4270 Editor::adjust_region_scale_amplitude (bool up)
4271 {
4272         if (!session) {
4273                 return;
4274         }
4275
4276         RegionSelection rs;
4277
4278         get_regions_for_action (rs);
4279
4280         if (rs.empty()) {
4281                 return;
4282         }
4283
4284         begin_reversible_command ("denormalize");
4285
4286         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
4287                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4288                 if (!arv)
4289                         continue;
4290                 XMLNode &before = arv->region()->get_state();
4291
4292                 double fraction = gain_to_slider_position (arv->audio_region()->scale_amplitude ());
4293
4294                 if (up) {
4295                         fraction += 0.05;
4296                         fraction = min (fraction, 1.0);
4297                 } else {
4298                         fraction -= 0.05;
4299                         fraction = max (fraction, 0.0);
4300                 }
4301
4302                 if (!up && fraction <= 0) {
4303                         continue;
4304                 }
4305
4306                 fraction = slider_position_to_gain (fraction);
4307                 fraction = coefficient_to_dB (fraction);
4308                 fraction = dB_to_coefficient (fraction);
4309
4310                 if (up && fraction >= 2.0) {
4311                         continue;
4312                 }
4313
4314                 arv->audio_region()->set_scale_amplitude (fraction);
4315                 session->add_command (new MementoCommand<Region>(*(arv->region().get()), &before, &arv->region()->get_state()));
4316         }
4317
4318         commit_reversible_command ();
4319 }
4320
4321
4322 void
4323 Editor::reverse_region ()
4324 {
4325         if (!session) {
4326                 return;
4327         }
4328
4329         Reverse rev (*session);
4330         apply_filter (rev, _("reverse regions"));
4331 }
4332
4333
4334 void
4335 Editor::quantize_region ()
4336 {
4337         if (!session) {
4338                 return;
4339         }
4340
4341         // FIXME: varying meter?
4342         Quantize quant (*session, snap_length_beats(0));
4343         apply_filter (quant, _("quantize regions"));
4344 }
4345
4346 void
4347 Editor::apply_filter (Filter& filter, string command)
4348 {
4349         RegionSelection rs;
4350
4351         get_regions_for_action (rs);
4352
4353         if (rs.empty()) {
4354                 return;
4355         }
4356
4357         begin_reversible_command (command);
4358
4359         track_canvas.get_window()->set_cursor (*wait_cursor);
4360         gdk_flush ();
4361
4362         for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
4363                 RegionSelection::iterator tmp = r;
4364                 ++tmp;
4365
4366                 MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
4367                 if (mrv) {
4368                         if (mrv->midi_region()->apply(filter) == 0) {
4369                                 mrv->redisplay_model();
4370                         }
4371                 }
4372
4373                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
4374                 if (arv) {
4375                         boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
4376
4377                         if (arv->audio_region()->apply (filter) == 0) {
4378
4379                                 XMLNode &before = playlist->get_state();
4380                                 playlist->replace_region (arv->region(), filter.results.front(), arv->region()->position());
4381                                 XMLNode &after = playlist->get_state();
4382                                 session->add_command(new MementoCommand<Playlist>(*playlist, &before, &after));
4383                         } else {
4384                                 goto out;
4385                         }
4386                 }
4387
4388                 r = tmp;
4389         }
4390
4391         commit_reversible_command ();
4392         rs.clear ();
4393
4394   out:
4395         track_canvas.get_window()->set_cursor (*current_canvas_cursor);
4396 }
4397
4398 void
4399 Editor::region_selection_op (void (Region::*pmf)(void))
4400 {
4401         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4402                 Region* region = (*i)->region().get();
4403                 (region->*pmf)();
4404         }
4405 }
4406
4407
4408 void
4409 Editor::region_selection_op (void (Region::*pmf)(void*), void *arg)
4410 {
4411         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4412                 Region* region = (*i)->region().get();
4413                 (region->*pmf)(arg);
4414         }
4415 }
4416
4417 void
4418 Editor::region_selection_op (void (Region::*pmf)(bool), bool yn)
4419 {
4420         for (RegionSelection::iterator i = selection->regions.begin(); i != selection->regions.end(); ++i) {
4421                 Region* region = (*i)->region().get();
4422                 (region->*pmf)(yn);
4423         }
4424 }
4425
4426 void
4427 Editor::external_edit_region ()
4428 {
4429         /* more to come */
4430 }
4431
4432 void
4433 Editor::brush (nframes_t pos)
4434 {
4435         RegionSelection sel;
4436         RegionSelection rs;
4437
4438         get_regions_for_action (rs);
4439
4440         snap_to (pos);
4441
4442         if (rs.empty()) {
4443                 return;
4444         }
4445
4446         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4447                 mouse_brush_insert_region ((*i), pos);
4448         }
4449 }
4450
4451 void
4452 Editor::reset_region_gain_envelopes ()
4453 {
4454         RegionSelection rs;
4455
4456         get_regions_for_action (rs);
4457
4458         if (!session || rs.empty()) {
4459                 return;
4460         }
4461
4462         session->begin_reversible_command (_("reset region gain"));
4463
4464         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4465                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4466                 if (arv) {
4467                         boost::shared_ptr<AutomationList> alist (arv->audio_region()->envelope());
4468                         XMLNode& before (alist->get_state());
4469
4470                         arv->audio_region()->set_default_envelope ();
4471                         session->add_command (new MementoCommand<AutomationList>(*arv->audio_region()->envelope().get(), &before, &alist->get_state()));
4472                 }
4473         }
4474
4475         session->commit_reversible_command ();
4476 }
4477
4478 void
4479 Editor::toggle_gain_envelope_visibility ()
4480 {
4481         RegionSelection rs;
4482
4483         get_regions_for_action (rs);
4484
4485         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4486                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4487                 if (arv) {
4488                         arv->set_envelope_visible (!arv->envelope_visible());
4489                 }
4490         }
4491 }
4492
4493 void
4494 Editor::toggle_gain_envelope_active ()
4495 {
4496         RegionSelection rs;
4497
4498         get_regions_for_action (rs);
4499
4500         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4501                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
4502                 if (arv) {
4503                         arv->audio_region()->set_envelope_active (!arv->audio_region()->envelope_active());
4504                 }
4505         }
4506 }
4507
4508 void
4509 Editor::toggle_region_lock ()
4510 {
4511         RegionSelection rs;
4512
4513         get_regions_for_action (rs);
4514
4515         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4516                 (*i)->region()->set_locked (!(*i)->region()->locked());
4517         }
4518 }
4519
4520 void
4521 Editor::set_region_lock_style (Region::PositionLockStyle ps)
4522 {
4523         RegionSelection rs;
4524
4525         get_regions_for_action (rs);
4526
4527         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4528                 (*i)->region()->set_position_lock_style (ps);
4529         }
4530 }
4531
4532
4533 void
4534 Editor::toggle_region_mute ()
4535 {
4536         RegionSelection rs;
4537
4538         get_regions_for_action (rs);
4539
4540         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4541                 (*i)->region()->set_muted (!(*i)->region()->muted());
4542         }
4543 }
4544
4545 void
4546 Editor::toggle_region_opaque ()
4547 {
4548         RegionSelection rs;
4549
4550         get_regions_for_action (rs);
4551
4552         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
4553                 (*i)->region()->set_opaque (!(*i)->region()->opaque());
4554         }
4555 }
4556
4557 void
4558 Editor::set_fade_length (bool in)
4559 {
4560         RegionSelection rs;
4561
4562         get_regions_for_action (rs);
4563
4564         /* we need a region to measure the offset from the start */
4565
4566         RegionView* rv;
4567
4568         if (!rs.empty()) {
4569                 rv = rs.front();
4570         } else if (entered_regionview) {
4571                 rv = entered_regionview;
4572         } else {
4573                 return;
4574         }
4575
4576         nframes64_t pos = get_preferred_edit_position();
4577         nframes_t len;
4578         char* cmd;
4579
4580         if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
4581                 /* edit point is outside the relevant region */
4582                 return;
4583         }
4584
4585         if (in) {
4586                 if (pos <= rv->region()->position()) {
4587                         /* can't do it */
4588                         return;
4589                 }
4590                 len = pos - rv->region()->position();
4591                 cmd = _("set fade in length");
4592         } else {
4593                 if (pos >= rv->region()->last_frame()) {
4594                         /* can't do it */
4595                         return;
4596                 }
4597                 len = rv->region()->last_frame() - pos;
4598                 cmd = _("set fade out length");
4599         }
4600
4601         begin_reversible_command (cmd);
4602
4603         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4604                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4605
4606                 if (!tmp) {
4607                         return;
4608                 }
4609
4610                 boost::shared_ptr<AutomationList> alist;
4611                 if (in) {
4612                         alist = tmp->audio_region()->fade_in();
4613                 } else {
4614                         alist = tmp->audio_region()->fade_out();
4615                 }
4616
4617                 XMLNode &before = alist->get_state();
4618
4619                 if (in) {
4620                         tmp->audio_region()->set_fade_in_length (len);
4621                         tmp->audio_region()->set_fade_in_active (true);
4622                 } else {
4623                         tmp->audio_region()->set_fade_out_length (len);
4624                         tmp->audio_region()->set_fade_out_active (true);
4625                 }
4626
4627                 XMLNode &after = alist->get_state();
4628                 session->add_command(new MementoCommand<AutomationList>(*alist, &before, &after));
4629         }
4630
4631         commit_reversible_command ();
4632 }
4633
4634 void
4635 Editor::toggle_fade_active (bool in)
4636 {
4637         RegionSelection rs;
4638
4639         get_regions_for_action (rs);
4640
4641         if (rs.empty()) {
4642                 return;
4643         }
4644
4645         const char* cmd = (in ? _("toggle fade in active") : _("toggle fade out active"));
4646         bool have_switch = false;
4647         bool yn = false;
4648
4649         begin_reversible_command (cmd);
4650
4651         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4652                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4653
4654                 if (!tmp) {
4655                         return;
4656                 }
4657
4658                 boost::shared_ptr<AudioRegion> region (tmp->audio_region());
4659
4660                 /* make the behaviour consistent across all regions */
4661
4662                 if (!have_switch) {
4663                         if (in) {
4664                                 yn = region->fade_in_active();
4665                         } else {
4666                                 yn = region->fade_out_active();
4667                         }
4668                         have_switch = true;
4669                 }
4670
4671                 XMLNode &before = region->get_state();
4672                 if (in) {
4673                         region->set_fade_in_active (!yn);
4674                 } else {
4675                         region->set_fade_out_active (!yn);
4676                 }
4677                 XMLNode &after = region->get_state();
4678                 session->add_command(new MementoCommand<AudioRegion>(*region.get(), &before, &after));
4679         }
4680
4681         commit_reversible_command ();
4682 }
4683
4684 void
4685 Editor::set_fade_in_shape (AudioRegion::FadeShape shape)
4686 {
4687         RegionSelection rs;
4688
4689         get_regions_for_action (rs);
4690
4691         if (rs.empty()) {
4692                 return;
4693         }
4694
4695         begin_reversible_command (_("set fade in shape"));
4696
4697         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4698                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4699
4700                 if (!tmp) {
4701                         return;
4702                 }
4703
4704                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
4705                 XMLNode &before = alist->get_state();
4706
4707                 tmp->audio_region()->set_fade_in_shape (shape);
4708
4709                 XMLNode &after = alist->get_state();
4710                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4711         }
4712
4713         commit_reversible_command ();
4714
4715 }
4716
4717 void
4718 Editor::set_fade_out_shape (AudioRegion::FadeShape shape)
4719 {
4720         RegionSelection rs;
4721
4722         get_regions_for_action (rs);
4723
4724         if (rs.empty()) {
4725                 return;
4726         }
4727
4728         begin_reversible_command (_("set fade out shape"));
4729
4730         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4731                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4732
4733                 if (!tmp) {
4734                         return;
4735                 }
4736
4737                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
4738                 XMLNode &before = alist->get_state();
4739
4740                 tmp->audio_region()->set_fade_out_shape (shape);
4741
4742                 XMLNode &after = alist->get_state();
4743                 session->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
4744         }
4745
4746         commit_reversible_command ();
4747 }
4748
4749 void
4750 Editor::set_fade_in_active (bool yn)
4751 {
4752         RegionSelection rs;
4753
4754         get_regions_for_action (rs);
4755
4756         if (rs.empty()) {
4757                 return;
4758         }
4759
4760         begin_reversible_command (_("set fade in active"));
4761
4762         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4763                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4764
4765                 if (!tmp) {
4766                         return;
4767                 }
4768
4769
4770                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4771
4772                 XMLNode &before = ar->get_state();
4773
4774                 ar->set_fade_in_active (yn);
4775
4776                 XMLNode &after = ar->get_state();
4777                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4778         }
4779
4780         commit_reversible_command ();
4781 }
4782
4783 void
4784 Editor::set_fade_out_active (bool yn)
4785 {
4786         RegionSelection rs;
4787
4788         get_regions_for_action (rs);
4789
4790         if (rs.empty()) {
4791                 return;
4792         }
4793
4794         begin_reversible_command (_("set fade out active"));
4795
4796         for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
4797                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*x);
4798
4799                 if (!tmp) {
4800                         return;
4801                 }
4802
4803                 boost::shared_ptr<AudioRegion> ar (tmp->audio_region());
4804
4805                 XMLNode &before = ar->get_state();
4806
4807                 ar->set_fade_out_active (yn);
4808
4809                 XMLNode &after = ar->get_state();
4810                 session->add_command(new MementoCommand<AudioRegion>(*ar, &before, &after));
4811         }
4812
4813         commit_reversible_command ();
4814 }
4815
4816
4817 /** Update crossfade visibility after its configuration has been changed */
4818 void
4819 Editor::update_xfade_visibility ()
4820 {
4821         _xfade_visibility = Config->get_xfades_visible ();
4822
4823         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4824                 AudioTimeAxisView* v = dynamic_cast<AudioTimeAxisView*>(*i);
4825                 if (v) {
4826                         if (_xfade_visibility) {
4827                                 v->show_all_xfades ();
4828                         } else {
4829                                 v->hide_all_xfades ();
4830                         }
4831                 }
4832         }
4833 }
4834
4835 void
4836 Editor::set_edit_point ()
4837 {
4838         nframes64_t where;
4839         bool ignored;
4840
4841         if (!mouse_frame (where, ignored)) {
4842                 return;
4843         }
4844
4845         snap_to (where);
4846
4847         if (selection->markers.empty()) {
4848
4849                 mouse_add_new_marker (where);
4850
4851         } else {
4852                 bool ignored;
4853
4854                 Location* loc = find_location_from_marker (selection->markers.front(), ignored);
4855
4856                 if (loc) {
4857                         loc->move_to (where);
4858                 }
4859         }
4860 }
4861
4862 void
4863 Editor::set_playhead_cursor ()
4864 {
4865         if (entered_marker) {
4866                 session->request_locate (entered_marker->position(), session->transport_rolling());
4867         } else {
4868                 nframes64_t where;
4869                 bool ignored;
4870
4871                 if (!mouse_frame (where, ignored)) {
4872                         return;
4873                 }
4874
4875                 snap_to (where);
4876
4877                 if (session) {
4878                         session->request_locate (where, session->transport_rolling());
4879                 }
4880         }
4881 }
4882
4883 void
4884 Editor::split ()
4885 {
4886         RegionSelection rs;
4887
4888         get_regions_for_action (rs);
4889
4890         nframes64_t where = get_preferred_edit_position();
4891
4892         if (rs.empty()) {
4893                 return;
4894         }
4895
4896         split_regions_at (where, rs);
4897 }
4898
4899 void
4900 Editor::ensure_entered_track_selected (bool op_really_wants_one_track_if_none_are_selected)
4901 {
4902         if (entered_track && mouse_mode == MouseObject) {
4903                 if (!selection->tracks.empty()) {
4904                         if (!selection->selected (entered_track)) {
4905                                 selection->add (entered_track);
4906                         }
4907                 } else {
4908                         /* there is no selection, but this operation requires/prefers selected objects */
4909
4910                         if (op_really_wants_one_track_if_none_are_selected) {
4911                                 selection->set (entered_track);
4912                         }
4913                 }
4914         }
4915 }
4916
4917 void
4918 Editor::trim_region_front ()
4919 {
4920         trim_region (true);
4921 }
4922
4923 void
4924 Editor::trim_region_back ()
4925 {
4926         trim_region (false);
4927 }
4928
4929 void
4930 Editor::trim_region (bool front)
4931 {
4932         nframes64_t where = get_preferred_edit_position();
4933         RegionSelection rs;
4934
4935         get_regions_for_action (rs);
4936
4937         if (rs.empty()) {
4938                 return;
4939         }
4940
4941         begin_reversible_command (front ? _("trim front") : _("trim back"));
4942
4943         for (list<RegionView*>::const_iterator i = rs.by_layer().begin(); i != rs.by_layer().end(); ++i) {
4944                 if (!(*i)->region()->locked()) {
4945                         boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
4946                         XMLNode &before = pl->get_state();
4947                         if (front) {
4948                                 (*i)->region()->trim_front (where, this);
4949                         } else {
4950                                 (*i)->region()->trim_end (where, this);
4951                         }
4952                         XMLNode &after = pl->get_state();
4953                         session->add_command(new MementoCommand<Playlist>(*pl.get(), &before, &after));
4954                 }
4955         }
4956
4957         commit_reversible_command ();
4958 }
4959
4960 struct EditorOrderRouteSorter {
4961     bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
4962             /* use of ">" forces the correct sort order */
4963             return a->order_key ("editor") < b->order_key ("editor");
4964     }
4965 };
4966
4967 void
4968 Editor::select_next_route()
4969 {
4970         if (selection->tracks.empty()) {
4971                 selection->set (track_views.front());
4972                 return;
4973         }
4974
4975         TimeAxisView* current = selection->tracks.front();
4976
4977         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
4978                 if (*i == current) {
4979                         ++i;
4980                         if (i != track_views.end()) {
4981                                 selection->set (*i);
4982                         } else {
4983                                 selection->set (*(track_views.begin()));
4984                         }
4985                         break;
4986                 }
4987         }
4988 }
4989
4990 void
4991 Editor::select_prev_route()
4992 {
4993         if (selection->tracks.empty()) {
4994                 selection->set (track_views.front());
4995                 return;
4996         }
4997
4998         TimeAxisView* current = selection->tracks.front();
4999
5000         for (TrackViewList::reverse_iterator i = track_views.rbegin(); i != track_views.rend(); ++i) {
5001                 if (*i == current) {
5002                         ++i;
5003                         if (i != track_views.rend()) {
5004                                 selection->set (*i);
5005                         } else {
5006                                 selection->set (*(track_views.rbegin()));
5007                         }
5008                         break;
5009                 }
5010         }
5011 }
5012
5013 void
5014 Editor::set_loop_from_selection (bool play)
5015 {
5016         if (session == 0 || selection->time.empty()) {
5017                 return;
5018         }
5019
5020         nframes_t start = selection->time[clicked_selection].start;
5021         nframes_t end = selection->time[clicked_selection].end;
5022
5023         set_loop_range (start, end,  _("set loop range from selection"));
5024
5025         if (play) {
5026                 session->request_play_loop (true);
5027                 session->request_locate (start, true);
5028         }
5029 }
5030
5031 void
5032 Editor::set_loop_from_edit_range (bool play)
5033 {
5034         if (session == 0) {
5035                 return;
5036         }
5037
5038         nframes64_t start;
5039         nframes64_t end;
5040
5041         if (!get_edit_op_range (start, end)) {
5042                 return;
5043         }
5044
5045         set_loop_range (start, end,  _("set loop range from edit range"));
5046
5047         if (play) {
5048                 session->request_play_loop (true);
5049                 session->request_locate (start, true);
5050         }
5051 }
5052
5053 void
5054 Editor::set_loop_from_region (bool play)
5055 {
5056         nframes64_t start = max_frames;
5057         nframes64_t end = 0;
5058
5059         RegionSelection rs;
5060
5061         get_regions_for_action (rs);
5062
5063         if (rs.empty()) {
5064                 return;
5065         }
5066
5067         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5068                 if ((*i)->region()->position() < start) {
5069                         start = (*i)->region()->position();
5070                 }
5071                 if ((*i)->region()->last_frame() + 1 > end) {
5072                         end = (*i)->region()->last_frame() + 1;
5073                 }
5074         }
5075
5076         set_loop_range (start, end, _("set loop range from region"));
5077
5078         if (play) {
5079                 session->request_play_loop (true);
5080                 session->request_locate (start, true);
5081         }
5082 }
5083
5084 void
5085 Editor::set_punch_from_selection ()
5086 {
5087         if (session == 0 || selection->time.empty()) {
5088                 return;
5089         }
5090
5091         nframes_t start = selection->time[clicked_selection].start;
5092         nframes_t end = selection->time[clicked_selection].end;
5093
5094         set_punch_range (start, end,  _("set punch range from selection"));
5095 }
5096
5097 void
5098 Editor::set_punch_from_edit_range ()
5099 {
5100         if (session == 0) {
5101                 return;
5102         }
5103
5104         nframes64_t start;
5105         nframes64_t end;
5106
5107         if (!get_edit_op_range (start, end)) {
5108                 return;
5109         }
5110
5111         set_punch_range (start, end,  _("set punch range from edit range"));
5112 }
5113
5114 void
5115 Editor::set_punch_from_region ()
5116 {
5117         nframes64_t start = max_frames;
5118         nframes64_t end = 0;
5119
5120         RegionSelection rs;
5121
5122         get_regions_for_action (rs);
5123
5124         if (rs.empty()) {
5125                 return;
5126         }
5127
5128         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
5129                 if ((*i)->region()->position() < start) {
5130                         start = (*i)->region()->position();
5131                 }
5132                 if ((*i)->region()->last_frame() + 1 > end) {
5133                         end = (*i)->region()->last_frame() + 1;
5134                 }
5135         }
5136
5137         set_punch_range (start, end, _("set punch range from region"));
5138 }
5139
5140 void
5141 Editor::pitch_shift_regions ()
5142 {
5143         RegionSelection rs;
5144
5145         get_regions_for_action (rs);
5146
5147         if (rs.empty()) {
5148                 return;
5149         }
5150
5151         pitch_shift (rs, 1.2);
5152 }
5153
5154 void
5155 Editor::use_region_as_bar ()
5156 {
5157         if (!session) {
5158                 return;
5159         }
5160
5161         RegionSelection rs;
5162
5163         get_regions_for_action (rs);
5164
5165         if (rs.empty()) {
5166                 return;
5167         }
5168
5169         RegionView* rv = rs.front();
5170
5171         define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
5172 }
5173
5174 void
5175 Editor::use_range_as_bar ()
5176 {
5177         nframes64_t start, end;
5178         if (get_edit_op_range (start, end)) {
5179                 define_one_bar (start, end);
5180         }
5181 }
5182
5183 void
5184 Editor::define_one_bar (nframes64_t start, nframes64_t end)
5185 {
5186         nframes64_t length = end - start;
5187
5188         const Meter& m (session->tempo_map().meter_at (start));
5189
5190         /* length = 1 bar */
5191
5192         /* now we want frames per beat.
5193            we have frames per bar, and beats per bar, so ...
5194         */
5195
5196         double frames_per_beat = length / m.beats_per_bar();
5197
5198         /* beats per minute = */
5199
5200         double beats_per_minute = (session->frame_rate() * 60.0) / frames_per_beat;
5201
5202         /* now decide whether to:
5203
5204             (a) set global tempo
5205             (b) add a new tempo marker
5206
5207         */
5208
5209         const TempoSection& t (session->tempo_map().tempo_section_at (start));
5210
5211         bool do_global = false;
5212
5213         if ((session->tempo_map().n_tempos() == 1) && (session->tempo_map().n_meters() == 1)) {
5214
5215                 /* only 1 tempo & 1 meter: ask if the user wants to set the tempo
5216                    at the start, or create a new marker
5217                 */
5218
5219                 vector<string> options;
5220                 options.push_back (_("Cancel"));
5221                 options.push_back (_("Add new marker"));
5222                 options.push_back (_("Set global tempo"));
5223                 Choice c (_("Do you want to set the global tempo or add new tempo marker?"),
5224                           options);
5225                 c.set_default_response (2);
5226
5227                 switch (c.run()) {
5228                 case 0:
5229                         return;
5230
5231                 case 2:
5232                         do_global = true;
5233                         break;
5234
5235                 default:
5236                         do_global = false;
5237                 }
5238
5239         } else {
5240
5241                 /* more than 1 tempo and/or meter section already, go ahead do the "usual":
5242                    if the marker is at the region starter, change it, otherwise add
5243                    a new tempo marker
5244                 */
5245         }
5246
5247         begin_reversible_command (_("set tempo from region"));
5248         XMLNode& before (session->tempo_map().get_state());
5249
5250         if (do_global) {
5251                 session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type());
5252         } else if (t.frame() == start) {
5253                 session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type());
5254         } else {
5255                 session->tempo_map().add_tempo (Tempo (beats_per_minute, t.note_type()), start);
5256         }
5257
5258         XMLNode& after (session->tempo_map().get_state());
5259
5260         session->add_command (new MementoCommand<TempoMap>(session->tempo_map(), &before, &after));
5261         commit_reversible_command ();
5262 }
5263
5264 void
5265 Editor::split_region_at_transients ()
5266 {
5267         AnalysisFeatureList positions;
5268
5269         if (!session) {
5270                 return;
5271         }
5272
5273         RegionSelection rs;
5274
5275         get_regions_for_action (rs);
5276
5277         if (rs.empty()) {
5278                 return;
5279         }
5280
5281         session->begin_reversible_command (_("split regions"));
5282
5283         for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ) {
5284
5285                 RegionSelection::iterator tmp;
5286
5287                 tmp = i;
5288                 ++tmp;
5289
5290                 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i)->region());
5291
5292                 if (ar && (ar->get_transients (positions) == 0)) {
5293                         split_region_at_points ((*i)->region(), positions, true);
5294                         positions.clear ();
5295                 }
5296
5297                 i = tmp;
5298         }
5299
5300         session->commit_reversible_command ();
5301
5302 }
5303
5304 void
5305 Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList& positions, bool can_ferret)
5306 {
5307         bool use_rhythmic_rodent = false;
5308
5309         boost::shared_ptr<Playlist> pl = r->playlist();
5310
5311         if (!pl) {
5312                 return;
5313         }
5314
5315         if (positions.empty()) {
5316                 return;
5317         }
5318
5319
5320         if (positions.size() > 20) {
5321                 Glib::ustring msgstr = string_compose (_("You are about to split\n%1\ninto %2 pieces.\nThis could take a long time."), r->name(), positions.size() + 1);
5322                 MessageDialog msg (msgstr,
5323                                    false,
5324                                    Gtk::MESSAGE_INFO,
5325                                    Gtk::BUTTONS_OK_CANCEL);
5326
5327                 if (can_ferret) {
5328                         msg.add_button (_("Call for the Ferret!"), RESPONSE_APPLY);
5329                         msg.set_secondary_text (_("Press OK to continue with this split operation\nor ask the Ferret dialog to tune the analysis"));
5330                 } else {
5331                         msg.set_secondary_text (_("Press OK to continue with this split operation"));
5332                 }
5333
5334                 msg.set_title (_("Excessive split?"));
5335                 msg.present ();
5336
5337                 int response = msg.run();
5338                 msg.hide ();
5339                 switch (response) {
5340                 case RESPONSE_OK:
5341                         break;
5342                 case RESPONSE_APPLY:
5343                         use_rhythmic_rodent = true;
5344                         break;
5345                 default:
5346                         return;
5347                 }
5348         }
5349
5350         if (use_rhythmic_rodent) {
5351                 show_rhythm_ferret ();
5352                 return;
5353         }
5354
5355         AnalysisFeatureList::const_iterator x;
5356
5357         nframes64_t pos = r->position();
5358
5359         XMLNode& before (pl->get_state());
5360
5361         x = positions.begin();
5362
5363         while (x != positions.end()) {
5364                 if ((*x) > pos) {
5365                         break;
5366                 }
5367                 ++x;
5368         }
5369
5370         if (x == positions.end()) {
5371                 return;
5372         }
5373
5374         pl->freeze ();
5375         pl->remove_region (r);
5376
5377         while (x != positions.end()) {
5378
5379                 /* file start = original start + how far we from the initial position ?
5380                  */
5381
5382                 nframes64_t file_start = r->start() + (pos - r->position());
5383
5384                 /* length = next position - current position
5385                  */
5386
5387                 nframes64_t len = (*x) - pos;
5388
5389                 /* XXX we do we really want to allow even single-sample regions?
5390                    shouldn't we have some kind of lower limit on region size?
5391                 */
5392
5393                 if (len <= 0) {
5394                         break;
5395                 }
5396
5397                 string new_name;
5398
5399                 if (session->region_name (new_name, r->name())) {
5400                         break;
5401                 }
5402
5403                 /* do NOT announce new regions 1 by one, just wait till they are all done */
5404
5405                 boost::shared_ptr<Region> nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags, false);
5406                 pl->add_region (nr, pos);
5407
5408                 pos += len;
5409                 ++x;
5410
5411                 if (*x > r->last_frame()) {
5412
5413                         /* add final fragment */
5414
5415                         file_start = r->start() + (pos - r->position());
5416                         len = r->last_frame() - pos;
5417
5418                         nr = RegionFactory::create (r->sources(), file_start, len, new_name, 0, Region::DefaultFlags);
5419                         pl->add_region (nr, pos);
5420
5421                         break;
5422                 }
5423         }
5424
5425         pl->thaw ();
5426
5427         XMLNode& after (pl->get_state());
5428
5429         session->add_command (new MementoCommand<Playlist>(*pl, &before, &after));
5430 }
5431
5432 void
5433 Editor::tab_to_transient (bool forward)
5434 {
5435         AnalysisFeatureList positions;
5436
5437         if (!session) {
5438                 return;
5439         }
5440
5441         nframes64_t pos = session->audible_frame ();
5442
5443         if (!selection->tracks.empty()) {
5444
5445                 for (TrackSelection::iterator t = selection->tracks.begin(); t != selection->tracks.end(); ++t) {
5446
5447                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*t);
5448
5449                         if (rtv) {
5450                                 boost::shared_ptr<Diskstream> ds = rtv->get_diskstream();
5451                                 if (ds) {
5452                                         boost::shared_ptr<Playlist> pl = rtv->get_diskstream()->playlist ();
5453                                         if (pl) {
5454                                                 nframes64_t result = pl->find_next_transient (pos, forward ? 1 : -1);
5455
5456                                                 if (result >= 0) {
5457                                                         positions.push_back (result);
5458                                                 }
5459                                         }
5460                                 }
5461                         }
5462                 }
5463
5464         } else {
5465
5466                 RegionSelection rs;
5467
5468                 get_regions_for_action (rs);
5469
5470                 if (rs.empty()) {
5471                         return;
5472                 }
5473
5474                 for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ++r) {
5475                         (*r)->region()->get_transients (positions);
5476                 }
5477         }
5478
5479         TransientDetector::cleanup_transients (positions, session->frame_rate(), 3.0);
5480
5481         if (forward) {
5482                 AnalysisFeatureList::iterator x;
5483
5484                 for (x = positions.begin(); x != positions.end(); ++x) {
5485                         if ((*x) > pos) {
5486                                 break;
5487                         }
5488                 }
5489
5490                 if (x != positions.end ()) {
5491                         session->request_locate (*x);
5492                 }
5493
5494         } else {
5495                 AnalysisFeatureList::reverse_iterator x;
5496
5497                 for (x = positions.rbegin(); x != positions.rend(); ++x) {
5498                         if ((*x) < pos) {
5499                                 break;
5500                         }
5501                 }
5502
5503                 if (x != positions.rend ()) {
5504                         session->request_locate (*x);
5505                 }
5506         }
5507 }
5508
5509 void
5510 Editor::playhead_forward_to_grid ()
5511 {
5512         if (!session) return;
5513         nframes64_t pos = playhead_cursor->current_frame;
5514         if (pos < max_frames) {
5515                 pos++;
5516                 snap_to_internal (pos, 1, false);
5517                 session->request_locate (pos);
5518         }
5519 }
5520
5521
5522 void
5523 Editor::playhead_backward_to_grid ()
5524 {
5525         if (!session) return;
5526         nframes64_t pos = playhead_cursor->current_frame;
5527         if (pos > 1) {
5528                 pos--;
5529                 snap_to_internal (pos, -1, false);
5530                 session->request_locate (pos);
5531         }
5532 }
5533