gtk2_ardour/editor_drag.cc

   1 /*
   2     Copyright (C) 2009 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 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <stdint.h>
  25 #include <algorithm>
  26
  27 #include "pbd/memento_command.h"
  28 #include "pbd/basename.h"
  29 #include "pbd/stateful_diff_command.h"
  30
  31 #include "gtkmm2ext/utils.h"
  32
  33 #include "ardour/audioengine.h"
  34 #include "ardour/audioregion.h"
  35 #include "ardour/audio_track.h"
  36 #include "ardour/dB.h"
  37 #include "ardour/midi_region.h"
  38 #include "ardour/midi_track.h"
  39 #include "ardour/operations.h"
  40 #include "ardour/region_factory.h"
  41 #include "ardour/session.h"
  42
  43 #include "canvas/canvas.h"
  44 #include "canvas/scroll_group.h"
  45
  46 #include "editor.h"
  47 #include "i18n.h"
  48 #include "keyboard.h"
  49 #include "audio_region_view.h"
  50 #include "automation_region_view.h"
  51 #include "midi_region_view.h"
  52 #include "ardour_ui.h"
  53 #include "gui_thread.h"
  54 #include "control_point.h"
  55 #include "region_gain_line.h"
  56 #include "editor_drag.h"
  57 #include "audio_time_axis.h"
  58 #include "midi_time_axis.h"
  59 #include "selection.h"
  60 #include "midi_selection.h"
  61 #include "automation_time_axis.h"
  62 #include "debug.h"
  63 #include "editor_cursors.h"
  64 #include "mouse_cursors.h"
  65 #include "note_base.h"
  66 #include "patch_change.h"
  67 #include "ui_config.h"
  68 #include "verbose_cursor.h"
  69
  70 using namespace std;
  71 using namespace ARDOUR;
  72 using namespace PBD;
  73 using namespace Gtk;
  74 using namespace Gtkmm2ext;
  75 using namespace Editing;
  76 using namespace ArdourCanvas;
  77
  78 using Gtkmm2ext::Keyboard;
  79
  80 double ControlPointDrag::_zero_gain_fraction = -1.0;
  81
  82 DragManager::DragManager (Editor* e)
  83         : _editor (e)
  84         , _ending (false)
  85         , _current_pointer_x (0.0)
  86         , _current_pointer_y (0.0)
  87         , _current_pointer_frame (0)
  88         , _old_follow_playhead (false)
  89 {
  90 }
  91
  92 DragManager::~DragManager ()
  93 {
  94         abort ();
  95 }
  96
  97 /** Call abort for each active drag */
  98 void
  99 DragManager::abort ()
 100 {
 101         _ending = true;
 102
 103         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 104                 (*i)->abort ();
 105                 delete *i;
 106         }
 107
 108         if (!_drags.empty ()) {
 109                 _editor->set_follow_playhead (_old_follow_playhead, false);
 110         }
 111
 112         _drags.clear ();
 113         _editor->abort_reversible_command();
 114
 115         _ending = false;
 116 }
 117
 118 void
 119 DragManager::add (Drag* d)
 120 {
 121         d->set_manager (this);
 122         _drags.push_back (d);
 123 }
 124
 125 void
 126 DragManager::set (Drag* d, GdkEvent* e, Gdk::Cursor* c)
 127 {
 128         d->set_manager (this);
 129         _drags.push_back (d);
 130         start_grab (e, c);
 131 }
 132
 133 void
 134 DragManager::start_grab (GdkEvent* e, Gdk::Cursor* c)
 135 {
 136         /* Prevent follow playhead during the drag to be nice to the user */
 137         _old_follow_playhead = _editor->follow_playhead ();
 138         _editor->set_follow_playhead (false);
 139
 140         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 141
 142         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 143                 (*i)->start_grab (e, c);
 144         }
 145 }
 146
 147 /** Call end_grab for each active drag.
 148  *  @return true if any drag reported movement having occurred.
 149  */
 150 bool
 151 DragManager::end_grab (GdkEvent* e)
 152 {
 153         _ending = true;
 154
 155         bool r = false;
 156         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 157                 bool const t = (*i)->end_grab (e);
 158                 if (t) {
 159                         r = true;
 160                 }
 161                 delete *i;
 162         }
 163
 164         _drags.clear ();
 165
 166         _ending = false;
 167
 168         _editor->set_follow_playhead (_old_follow_playhead, false);
 169
 170         return r;
 171 }
 172
 173 void
 174 DragManager::mark_double_click ()
 175 {
 176         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 177                 (*i)->set_double_click (true);
 178         }
 179 }
 180
 181 bool
 182 DragManager::motion_handler (GdkEvent* e, bool from_autoscroll)
 183 {
 184         bool r = false;
 185
 186         /* calling this implies that we expect the event to have canvas
 187          * coordinates
 188          *
 189          * Can we guarantee that this is true?
 190          */
 191
 192         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 193
 194         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 195                 bool const t = (*i)->motion_handler (e, from_autoscroll);
 196                 /* run all handlers; return true if at least one of them
 197                    returns true (indicating that the event has been handled).
 198                 */
 199                 if (t) {
 200                         r = true;
 201                 }
 202
 203         }
 204
 205         return r;
 206 }
 207
 208 bool
 209 DragManager::have_item (ArdourCanvas::Item* i) const
 210 {
 211         list<Drag*>::const_iterator j = _drags.begin ();
 212         while (j != _drags.end() && (*j)->item () != i) {
 213                 ++j;
 214         }
 215
 216         return j != _drags.end ();
 217 }
 218
 219 Drag::Drag (Editor* e, ArdourCanvas::Item* i, bool trackview_only)
 220         : _editor (e)
 221         , _drags (0)
 222         , _item (i)
 223         , _pointer_frame_offset (0)
 224         , _x_constrained (false)
 225         , _y_constrained (false)
 226         , _was_rolling (false)
 227         , _trackview_only (trackview_only)
 228         , _move_threshold_passed (false)
 229         , _starting_point_passed (false)
 230         , _initially_vertical (false)
 231         , _was_double_click (false)
 232         , _grab_x (0.0)
 233         , _grab_y (0.0)
 234         , _last_pointer_x (0.0)
 235         , _last_pointer_y (0.0)
 236         , _raw_grab_frame (0)
 237         , _grab_frame (0)
 238         , _last_pointer_frame (0)
 239         , _snap_delta (0)
 240 {
 241
 242 }
 243
 244 void
 245 Drag::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t /*time*/)
 246 {
 247         _item->ungrab ();
 248         _item = new_item;
 249
 250         if (!_cursor_ctx) {
 251                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 252         } else {
 253                 _cursor_ctx->change (cursor);
 254         }
 255
 256         _item->grab ();
 257 }
 258
 259 void
 260 Drag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 261 {
 262
 263         /* we set up x/y dragging constraints on first move */
 264
 265         _raw_grab_frame = _editor->canvas_event_sample (event, &_grab_x, &_grab_y);
 266
 267         setup_pointer_frame_offset ();
 268         _grab_frame = adjusted_frame (_raw_grab_frame, event);
 269         _last_pointer_frame = _grab_frame;
 270         _last_pointer_x = _grab_x;
 271
 272         if (_trackview_only) {
 273                 _grab_y = _grab_y - _editor->get_trackview_group()->canvas_origin().y;
 274         }
 275
 276         _last_pointer_y = _grab_y;
 277
 278         _item->grab ();
 279
 280         if (!_editor->cursors()->is_invalid (cursor)) {
 281                 /* CAIROCANVAS need a variant here that passes *cursor */
 282                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 283         }
 284
 285         if (_editor->session() && _editor->session()->transport_rolling()) {
 286                 _was_rolling = true;
 287         } else {
 288                 _was_rolling = false;
 289         }
 290
 291         switch (_editor->snap_type()) {
 292         case SnapToRegionStart:
 293         case SnapToRegionEnd:
 294         case SnapToRegionSync:
 295         case SnapToRegionBoundary:
 296                 _editor->build_region_boundary_cache ();
 297                 break;
 298         default:
 299                 break;
 300         }
 301 }
 302
 303 /** Call to end a drag `successfully'.  Ungrabs item and calls
 304  *  subclass' finished() method.
 305  *
 306  *  @param event GDK event, or 0.
 307  *  @return true if some movement occurred, otherwise false.
 308  */
 309 bool
 310 Drag::end_grab (GdkEvent* event)
 311 {
 312         _editor->stop_canvas_autoscroll ();
 313
 314         _item->ungrab ();
 315
 316         finished (event, _move_threshold_passed);
 317
 318         _editor->verbose_cursor()->hide ();
 319         _cursor_ctx.reset();
 320
 321         return _move_threshold_passed;
 322 }
 323
 324 framepos_t
 325 Drag::adjusted_frame (framepos_t f, GdkEvent const * event, bool snap) const
 326 {
 327         framepos_t pos = 0;
 328
 329         if (f > _pointer_frame_offset) {
 330                 pos = f - _pointer_frame_offset;
 331         }
 332
 333         if (snap) {
 334                 _editor->snap_to_with_modifier (pos, event);
 335         }
 336
 337         return pos;
 338 }
 339
 340 framepos_t
 341 Drag::adjusted_current_frame (GdkEvent const * event, bool snap) const
 342 {
 343         return adjusted_frame (_drags->current_pointer_frame (), event, snap);
 344 }
 345
 346 frameoffset_t
 347 Drag::snap_delta (guint state) const
 348 {
 349         if (ArdourKeyboard::indicates_snap_delta (state)) {
 350                 return _snap_delta;
 351         }
 352
 353         return 0;
 354 }
 355
 356 double
 357 Drag::current_pointer_x() const
 358 {
 359         return _drags->current_pointer_x ();
 360 }
 361
 362 double
 363 Drag::current_pointer_y () const
 364 {
 365         if (!_trackview_only) {
 366                 return _drags->current_pointer_y ();
 367         }
 368
 369         return _drags->current_pointer_y () - _editor->get_trackview_group()->canvas_origin().y;
 370 }
 371
 372 void
 373 Drag::setup_snap_delta (framepos_t pos)
 374 {
 375         framepos_t temp = pos;
 376         _editor->snap_to (temp, ARDOUR::RoundNearest, false, true);
 377         _snap_delta = temp - pos;
 378 }
 379
 380 bool
 381 Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 382 {
 383         /* check to see if we have moved in any way that matters since the last motion event */
 384         if (_move_threshold_passed &&
 385             (!x_movement_matters() || _last_pointer_x == current_pointer_x ()) &&
 386             (!y_movement_matters() || _last_pointer_y == current_pointer_y ()) ) {
 387                 return false;
 388         }
 389
 390         pair<framecnt_t, int> const threshold = move_threshold ();
 391
 392         bool const old_move_threshold_passed = _move_threshold_passed;
 393
 394         if (!_move_threshold_passed) {
 395
 396                 bool const xp = (::llabs (_drags->current_pointer_frame () - _raw_grab_frame) >= threshold.first);
 397                 bool const yp = (::fabs ((current_pointer_y () - _grab_y)) >= threshold.second);
 398
 399                 _move_threshold_passed = ((xp && x_movement_matters()) || (yp && y_movement_matters()));
 400         }
 401
 402         if (active (_editor->mouse_mode) && _move_threshold_passed) {
 403
 404                 if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
 405
 406                         if (old_move_threshold_passed != _move_threshold_passed) {
 407
 408                                 /* just changed */
 409
 410                                 if (fabs (current_pointer_y() - _grab_y) > fabs (current_pointer_x() - _grab_x)) {
 411                                         _initially_vertical = true;
 412                                 } else {
 413                                         _initially_vertical = false;
 414                                 }
 415                                 /** check constraints for this drag.
 416                                  *  Note that the current convention is to use "contains" for
 417                                  *  key modifiers during motion and "equals" when initiating a drag.
 418                                  *  In this case we haven't moved yet, so "equals" applies here.
 419                                  */
 420                                 if (Config->get_edit_mode() != Lock) {
 421                                         if (event->motion.state & Gdk::BUTTON2_MASK) {
 422                                                 // if dragging with button2, the motion is x constrained, with constraint modifier it is y constrained
 423                                                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 424                                                         _x_constrained = false;
 425                                                         _y_constrained = true;
 426                                                 } else {
 427                                                         _x_constrained = true;
 428                                                         _y_constrained = false;
 429                                                 }
 430                                         } else if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 431                                                 // if dragging normally, the motion is constrained to the first direction of movement.
 432                                                 if (_initially_vertical) {
 433                                                         _x_constrained = true;
 434                                                         _y_constrained = false;
 435                                                 } else {
 436                                                         _x_constrained = false;
 437                                                         _y_constrained = true;
 438                                                 }
 439                                         }
 440                                 } else {
 441                                         if (event->button.state & Gdk::BUTTON2_MASK) {
 442                                                 _x_constrained = false;
 443                                         } else {
 444                                                 _x_constrained = true;
 445                                         }
 446                                         _y_constrained = false;
 447                                 }
 448                         }
 449
 450                         if (!from_autoscroll) {
 451                                 _editor->maybe_autoscroll (true, allow_vertical_autoscroll (), false);
 452                         }
 453
 454                         if (!_editor->autoscroll_active() || from_autoscroll) {
 455
 456
 457                                 bool first_move = (_move_threshold_passed != old_move_threshold_passed) || from_autoscroll;
 458
 459                                 motion (event, first_move && !_starting_point_passed);
 460
 461                                 if (first_move && !_starting_point_passed) {
 462                                         _starting_point_passed = true;
 463                                 }
 464
 465                                 _last_pointer_x = _drags->current_pointer_x ();
 466                                 _last_pointer_y = current_pointer_y ();
 467                                 _last_pointer_frame = adjusted_current_frame (event);
 468                         }
 469
 470                         return true;
 471                 }
 472         }
 473
 474         return false;
 475 }
 476
 477 /** Call to abort a drag.  Ungrabs item and calls subclass's aborted () */
 478 void
 479 Drag::abort ()
 480 {
 481         if (_item) {
 482                 _item->ungrab ();
 483         }
 484
 485         aborted (_move_threshold_passed);
 486
 487         _editor->stop_canvas_autoscroll ();
 488         _editor->verbose_cursor()->hide ();
 489 }
 490
 491 void
 492 Drag::show_verbose_cursor_time (framepos_t frame)
 493 {
 494         _editor->verbose_cursor()->set_time (frame);
 495         _editor->verbose_cursor()->show ();
 496 }
 497
 498 void
 499 Drag::show_verbose_cursor_duration (framepos_t start, framepos_t end, double /*xoffset*/)
 500 {
 501         _editor->verbose_cursor()->set_duration (start, end);
 502         _editor->verbose_cursor()->show ();
 503 }
 504
 505 void
 506 Drag::show_verbose_cursor_text (string const & text)
 507 {
 508         _editor->verbose_cursor()->set (text);
 509         _editor->verbose_cursor()->show ();
 510 }
 511
 512 boost::shared_ptr<Region>
 513 Drag::add_midi_region (MidiTimeAxisView* view, bool commit)
 514 {
 515         if (_editor->session()) {
 516                 const TempoMap& map (_editor->session()->tempo_map());
 517                 framecnt_t pos = grab_frame();
 518                 const Meter& m = map.meter_at (pos);
 519                 /* not that the frame rate used here can be affected by pull up/down which
 520                    might be wrong.
 521                 */
 522                 framecnt_t len = m.frames_per_bar (map.tempo_at (pos), _editor->session()->frame_rate());
 523                 return view->add_region (grab_frame(), len, commit);
 524         }
 525
 526         return boost::shared_ptr<Region>();
 527 }
 528
 529 struct EditorOrderTimeAxisViewSorter {
 530         bool operator() (TimeAxisView* a, TimeAxisView* b) {
 531                 RouteTimeAxisView* ra = dynamic_cast<RouteTimeAxisView*> (a);
 532                 RouteTimeAxisView* rb = dynamic_cast<RouteTimeAxisView*> (b);
 533                 assert (ra && rb);
 534                 return ra->route()->order_key () < rb->route()->order_key ();
 535         }
 536 };
 537
 538 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 539         : Drag (e, i)
 540         , _primary (p)
 541         , _ntracks (0)
 542 {
 543         _editor->visible_order_range (&_visible_y_low, &_visible_y_high);
 544
 545         /* Make a list of tracks to refer to during the drag; we include hidden tracks,
 546            as some of the regions we are dragging may be on such tracks.
 547         */
 548
 549         TrackViewList track_views = _editor->track_views;
 550         track_views.sort (EditorOrderTimeAxisViewSorter ());
 551
 552         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 553                 _time_axis_views.push_back (*i);
 554
 555                 TimeAxisView::Children children_list = (*i)->get_child_list ();
 556                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 557                         _time_axis_views.push_back (j->get());
 558                 }
 559         }
 560
 561         /* the list of views can be empty at this point if this is a region list-insert drag
 562          */
 563
 564         for (list<RegionView*>::const_iterator i = v.begin(); i != v.end(); ++i) {
 565                 _views.push_back (DraggingView (*i, this, &(*i)->get_time_axis_view()));
 566         }
 567
 568         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), boost::bind (&RegionDrag::region_going_away, this, _1), gui_context());
 569 }
 570
 571 void
 572 RegionDrag::region_going_away (RegionView* v)
 573 {
 574         list<DraggingView>::iterator i = _views.begin ();
 575         while (i != _views.end() && i->view != v) {
 576                 ++i;
 577         }
 578
 579         if (i != _views.end()) {
 580                 _views.erase (i);
 581         }
 582 }
 583
 584 /** Given a TimeAxisView, return the index of it into the _time_axis_views vector,
 585  *  or -1 if it is not found.
 586  */
 587 int
 588 RegionDrag::find_time_axis_view (TimeAxisView* t) const
 589 {
 590         int i = 0;
 591         int const N = _time_axis_views.size ();
 592         while (i < N && _time_axis_views[i] != t) {
 593                 ++i;
 594         }
 595
 596         if (_time_axis_views[i] != t) {
 597                 return -1;
 598         }
 599
 600         return i;
 601 }
 602
 603 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 604         : RegionDrag (e, i, p, v)
 605         , _brushing (b)
 606         , _ignore_video_lock (false)
 607         , _total_x_delta (0)
 608         , _last_pointer_time_axis_view (0)
 609         , _last_pointer_layer (0)
 610         , _ndropzone (0)
 611         , _pdropzone (0)
 612         , _ddropzone (0)
 613 {
 614         DEBUG_TRACE (DEBUG::Drags, "New RegionMotionDrag\n");
 615 }
 616
 617 void
 618 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
 619 {
 620         Drag::start_grab (event, cursor);
 621         setup_snap_delta (_last_frame_position);
 622
 623         show_verbose_cursor_time (_last_frame_position);
 624
 625         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (current_pointer_y ());
 626         if (tv.first) {
 627                 _last_pointer_time_axis_view = find_time_axis_view (tv.first);
 628                 assert(_last_pointer_time_axis_view >= 0);
 629                 _last_pointer_layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
 630         }
 631
 632         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
 633                 _ignore_video_lock = true;
 634         }
 635
 636         if (_brushing) {
 637                 /* cross track dragging seems broken here. disabled for now. */
 638                 _y_constrained = true;
 639         }
 640 }
 641
 642 double
 643 RegionMotionDrag::compute_x_delta (GdkEvent const * event, framepos_t* pending_region_position)
 644 {
 645         /* compute the amount of pointer motion in frames, and where
 646            the region would be if we moved it by that much.
 647         */
 648         *pending_region_position = adjusted_frame (_drags->current_pointer_frame (), event, false);
 649
 650         framepos_t sync_frame;
 651         framecnt_t sync_offset;
 652         int32_t sync_dir;
 653
 654         sync_offset = _primary->region()->sync_offset (sync_dir);
 655
 656         /* we don't handle a sync point that lies before zero.
 657          */
 658         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 659
 660                 framecnt_t const sd = snap_delta (event->button.state);
 661                 sync_frame = *pending_region_position + (sync_dir * sync_offset) + sd;
 662
 663                 _editor->snap_to_with_modifier (sync_frame, event);
 664
 665                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame) - sd;
 666
 667         } else {
 668                 *pending_region_position = _last_frame_position;
 669         }
 670
 671         if (*pending_region_position > max_framepos - _primary->region()->length()) {
 672                 *pending_region_position = _last_frame_position;
 673         }
 674
 675         double dx = 0;
 676
 677         bool const x_move_allowed = !_x_constrained;
 678
 679         if ((*pending_region_position != _last_frame_position) && x_move_allowed) {
 680
 681                 /* x movement since last time (in pixels) */
 682                 dx = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->samples_per_pixel;
 683
 684                 /* total x movement */
 685                 framecnt_t total_dx = *pending_region_position;
 686                 if (regions_came_from_canvas()) {
 687                         total_dx = total_dx - grab_frame ();
 688                 }
 689
 690                 /* check that no regions have gone off the start of the session */
 691                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 692                         if ((i->view->region()->position() + total_dx) < 0) {
 693                                 dx = 0;
 694                                 *pending_region_position = _last_frame_position;
 695                                 break;
 696                         }
 697                 }
 698
 699         }
 700
 701         return dx;
 702 }
 703
 704 int
 705 RegionDrag::apply_track_delta (const int start, const int delta, const int skip, const bool distance_only) const
 706 {
 707         if (delta == 0) {
 708                 return start;
 709         }
 710
 711         const int tavsize  = _time_axis_views.size();
 712         const int dt = delta > 0 ? +1 : -1;
 713         int current  = start;
 714         int target   = start + delta - skip;
 715
 716         assert (current < 0 || current >= tavsize || !_time_axis_views[current]->hidden());
 717         assert (skip == 0 || (skip < 0 && delta < 0) || (skip > 0 && delta > 0));
 718
 719         while (current >= 0 && current != target) {
 720                 current += dt;
 721                 if (current < 0 && dt < 0) {
 722                         break;
 723                 }
 724                 if (current >= tavsize && dt > 0) {
 725                         break;
 726                 }
 727                 if (current < 0 || current >= tavsize) {
 728                         continue;
 729                 }
 730
 731                 RouteTimeAxisView const * rtav = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[current]);
 732                 if (_time_axis_views[current]->hidden() || !rtav || !rtav->is_track()) {
 733                         target += dt;
 734                 }
 735
 736                 if (distance_only && current == start + delta) {
 737                         break;
 738                 }
 739         }
 740         return target;
 741 }
 742
 743 bool
 744 RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
 745 {
 746         if (_y_constrained) {
 747                 return false;
 748         }
 749
 750         const int tavsize  = _time_axis_views.size();
 751         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 752                 int n = apply_track_delta (i->time_axis_view, delta_track, skip_invisible);
 753                 assert (n < 0 || n >= tavsize || !_time_axis_views[n]->hidden());
 754
 755                 if (i->time_axis_view < 0 || i->time_axis_view >= tavsize) {
 756                         /* already in the drop zone */
 757                         if (delta_track >= 0) {
 758                                 /* downward motion - OK if others are still not in the dropzone */
 759                                 continue;
 760                         }
 761
 762                 }
 763
 764                 if (n < 0) {
 765                         /* off the top */
 766                         return false;
 767                 } else if (n >= tavsize) {
 768                         /* downward motion into drop zone. That's fine. */
 769                         continue;
 770                 }
 771
 772                 RouteTimeAxisView const * to = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[n]);
 773                 if (to == 0 || to->hidden() || !to->is_track() || to->track()->data_type() != i->view->region()->data_type()) {
 774                         /* not a track, or the wrong type */
 775                         return false;
 776                 }
 777
 778                 double const l = i->layer + delta_layer;
 779
 780                 /* Note that we allow layer to be up to 0.5 below zero, as this is used by `Expanded'
 781                    mode to allow the user to place a region below another on layer 0.
 782                 */
 783                 if (delta_track == 0 && (l < -0.5 || l >= int (to->view()->layers()))) {
 784                         /* Off the top or bottom layer; note that we only refuse if the track hasn't changed.
 785                            If it has, the layers will be munged later anyway, so it's ok.
 786                         */
 787                         return false;
 788                 }
 789         }
 790
 791         /* all regions being dragged are ok with this change */
 792         return true;
 793 }
 794
 795 struct DraggingViewSorter {
 796         bool operator() (const DraggingView& a, const DraggingView& b) {
 797                 return a.time_axis_view < b.time_axis_view;
 798         }
 799 };
 800
 801 void
 802 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 803 {
 804         double delta_layer = 0;
 805         int delta_time_axis_view = 0;
 806         int current_pointer_time_axis_view = -1;
 807
 808         assert (!_views.empty ());
 809
 810         /* Note: time axis views in this method are often expressed as an index into the _time_axis_views vector */
 811
 812         /* Find the TimeAxisView that the pointer is now over */
 813         const double cur_y = current_pointer_y ();
 814         pair<TimeAxisView*, double> const r = _editor->trackview_by_y_position (cur_y);
 815         TimeAxisView* tv = r.first;
 816
 817         if (!tv && cur_y < 0) {
 818                 /* above trackview area, autoscroll hasn't moved us since last time, nothing to do */
 819                 return;
 820         }
 821
 822         /* find drop-zone y-position */
 823         Coord last_track_bottom_edge;
 824         last_track_bottom_edge = 0;
 825         for (std::vector<TimeAxisView*>::reverse_iterator t = _time_axis_views.rbegin(); t != _time_axis_views.rend(); ++t) {
 826                 if (!(*t)->hidden()) {
 827                         last_track_bottom_edge = (*t)->canvas_display()->canvas_origin ().y + (*t)->effective_height();
 828                         break;
 829                 }
 830         }
 831
 832         if (tv && tv->view()) {
 833                 /* the mouse is over a track */
 834                 double layer = r.second;
 835
 836                 if (first_move && tv->view()->layer_display() == Stacked) {
 837                         tv->view()->set_layer_display (Expanded);
 838                 }
 839
 840                 /* Here's the current pointer position in terms of time axis view and layer */
 841                 current_pointer_time_axis_view = find_time_axis_view (tv);
 842                 assert(current_pointer_time_axis_view >= 0);
 843
 844                 double const current_pointer_layer = tv->layer_display() == Overlaid ? 0 : layer;
 845
 846                 /* Work out the change in y */
 847
 848                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
 849                 if (!rtv || !rtv->is_track()) {
 850                         /* ignore busses early on. we can't move any regions on them */
 851                 } else if (_last_pointer_time_axis_view < 0) {
 852                         /* Was in the drop-zone, now over a track.
 853                          * Hence it must be an upward move (from the bottom)
 854                          *
 855                          * track_index is still -1, so delta must be set to
 856                          * move up the correct number of tracks from the bottom.
 857                          *
 858                          * This is necessary because steps may be skipped if
 859                          * the bottom-most track is not a valid target and/or
 860                          * if there are hidden tracks at the bottom.
 861                          * Hence the initial offset (_ddropzone) as well as the
 862                          * last valid pointer position (_pdropzone) need to be
 863                          * taken into account.
 864                          */
 865                         delta_time_axis_view = current_pointer_time_axis_view - _time_axis_views.size () + _ddropzone - _pdropzone;
 866                 } else {
 867                         delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
 868                 }
 869
 870                 /* TODO needs adjustment per DraggingView,
 871                  *
 872                  * e.g. select one region on the top-layer of a track
 873                  * and one region which is at the bottom-layer of another track
 874                  * drag both.
 875                  *
 876                  * Indicated drop-zones and layering is wrong.
 877                  * and may infer additional layers on the target-track
 878                  * (depending how many layers the original track had).
 879                  *
 880                  * Or select two regions (different layers) on a same track,
 881                  * move across a non-layer track.. -> layering info is lost.
 882                  * on drop either of the regions may be on top.
 883                  *
 884                  * Proposed solution: screw it :) well,
 885                  *   don't use delta_layer, use an absolute value
 886                  *   1) remember DraggingView's layer  as float 0..1  [current layer / all layers of source]
 887                  *   2) calculate current mouse pos, y-pos inside track divided by height of mouse-over track.
 888                  *   3) iterate over all DraggingView, find the one that is over the track with most layers
 889                  *   4) proportionally scale layer to layers available on target
 890                  */
 891                 delta_layer = current_pointer_layer - _last_pointer_layer;
 892
 893         }
 894         /* for automation lanes, there is a TimeAxisView but no ->view()
 895          * if (!tv) -> dropzone
 896          */
 897         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view >= 0) {
 898                 /* Moving into the drop-zone.. */
 899                 delta_time_axis_view = _time_axis_views.size () - _last_pointer_time_axis_view;
 900                 /* delta_time_axis_view may not be sufficient to move into the DZ
 901                  * the mouse may enter it, but it may not be a valid move due to
 902                  * constraints.
 903                  *
 904                  * -> remember the delta needed to move into the dropzone
 905                  */
 906                 _ddropzone = delta_time_axis_view;
 907                 /* ..but subtract hidden tracks (or routes) at the bottom.
 908                  * we silently move mover them
 909                  */
 910                 _ddropzone -= apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 911                               - _time_axis_views.size();
 912         }
 913         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view < 0) {
 914                 /* move around inside the zone.
 915                  * This allows to move further down until all regions are in the zone.
 916                  */
 917                 const double ptr_y = cur_y + _editor->get_trackview_group()->canvas_origin().y;
 918                 assert(ptr_y >= last_track_bottom_edge);
 919                 assert(_ddropzone > 0);
 920
 921                 /* calculate mouse position in 'tracks' below last track. */
 922                 const double dzi_h = TimeAxisView::preset_height (HeightNormal);
 923                 uint32_t dzpos = _ddropzone + floor((1 + ptr_y - last_track_bottom_edge) / dzi_h);
 924
 925                 if (dzpos > _pdropzone && _ndropzone < _ntracks) {
 926                         // move further down
 927                         delta_time_axis_view =  dzpos - _pdropzone;
 928                 } else if (dzpos < _pdropzone && _ndropzone > 0) {
 929                         // move up inside the DZ
 930                         delta_time_axis_view =  dzpos - _pdropzone;
 931                 }
 932         }
 933
 934         /* Work out the change in x */
 935         framepos_t pending_region_position;
 936         double const x_delta = compute_x_delta (event, &pending_region_position);
 937         _last_frame_position = pending_region_position;
 938
 939         /* calculate hidden tracks in current y-axis delta */
 940         int delta_skip = 0;
 941         if (_last_pointer_time_axis_view < 0 && _pdropzone > 0) {
 942                 /* The mouse is more than one track below the dropzone.
 943                  * distance calculation is not needed (and would not work, either
 944                  * because the dropzone is "packed").
 945                  *
 946                  * Except when [partially] moving regions out of dropzone in a large step.
 947                  * (the mouse may or may not remain in the DZ)
 948                  * Hidden tracks at the bottom of the TAV need to be skipped.
 949                  *
 950                  * This also handles the case if the mouse entered the DZ
 951                  * in a large step (exessive delta), either due to fast-movement,
 952                  * autoscroll, laggy UI. _ddropzone copensates for that (see "move into dz" above)
 953                  */
 954                 if (delta_time_axis_view < 0 && (int)_ddropzone - delta_time_axis_view >= (int)_pdropzone) {
 955                         const int dt = delta_time_axis_view + (int)_pdropzone - (int)_ddropzone;
 956                         assert(dt <= 0);
 957                         delta_skip = apply_track_delta(_time_axis_views.size(), dt, 0, true)
 958                                 -_time_axis_views.size() - dt;
 959                 }
 960         }
 961         else if (_last_pointer_time_axis_view < 0) {
 962                 /* Moving out of the zone. Check for hidden tracks at the bottom. */
 963                 delta_skip = apply_track_delta(_time_axis_views.size(), delta_time_axis_view, 0, true)
 964                              -_time_axis_views.size() - delta_time_axis_view;
 965         } else {
 966                 /* calculate hidden tracks that are skipped by the pointer movement */
 967                 delta_skip = apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 968                              - _last_pointer_time_axis_view
 969                              - delta_time_axis_view;
 970         }
 971
 972         /* Verify change in y */
 973         if (!y_movement_allowed (delta_time_axis_view, delta_layer, delta_skip)) {
 974                 /* this y movement is not allowed, so do no y movement this time */
 975                 delta_time_axis_view = 0;
 976                 delta_layer = 0;
 977                 delta_skip = 0;
 978         }
 979
 980         if (x_delta == 0 && (tv && tv->view() && delta_time_axis_view == 0) && delta_layer == 0 && !first_move) {
 981                 /* haven't reached next snap point, and we're not switching
 982                    trackviews nor layers. nothing to do.
 983                 */
 984                 return;
 985         }
 986
 987         typedef map<boost::shared_ptr<Playlist>, double> PlaylistDropzoneMap;
 988         PlaylistDropzoneMap playlist_dropzone_map;
 989         _ndropzone = 0; // number of elements currently in the dropzone
 990
 991         if (first_move) {
 992                 /* sort views by time_axis.
 993                  * This retains track order in the dropzone, regardless
 994                  * of actual selection order
 995                  */
 996                 _views.sort (DraggingViewSorter());
 997
 998                 /* count number of distinct tracks of all regions
 999                  * being dragged, used for dropzone.
1000                  */
1001                 int prev_track = -1;
1002                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1003                         if (i->time_axis_view != prev_track) {
1004                                 prev_track = i->time_axis_view;
1005                                 ++_ntracks;
1006                         }
1007                 }
1008 #ifndef NDEBUG
1009                 int spread =
1010                         _views.back().time_axis_view -
1011                         _views.front().time_axis_view;
1012
1013                 spread -= apply_track_delta (_views.front().time_axis_view, spread, 0, true)
1014                           -  _views.back().time_axis_view;
1015
1016                 printf("Dragging region(s) from %d different track(s), max dist: %d\n", _ntracks, spread);
1017 #endif
1018         }
1019
1020         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1021
1022                 RegionView* rv = i->view;
1023                 double y_delta;
1024
1025                 y_delta = 0;
1026
1027                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1028                         continue;
1029                 }
1030
1031                 if (first_move) {
1032                         rv->drag_start ();
1033
1034                         /* reparent the regionview into a group above all
1035                          * others
1036                          */
1037
1038                         ArdourCanvas::Item* rvg = rv->get_canvas_group();
1039                         Duple rv_canvas_offset = rvg->parent()->canvas_origin ();
1040                         Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
1041                         rv->get_canvas_group()->reparent (_editor->_drag_motion_group);
1042                         /* move the item so that it continues to appear at the
1043                            same location now that its parent has changed.
1044                            */
1045                         rvg->move (rv_canvas_offset - dmg_canvas_offset);
1046                 }
1047
1048                 /* If we have moved tracks, we'll fudge the layer delta so that the
1049                    region gets moved back onto layer 0 on its new track; this avoids
1050                    confusion when dragging regions from non-zero layers onto different
1051                    tracks.
1052                 */
1053                 double this_delta_layer = delta_layer;
1054                 if (delta_time_axis_view != 0) {
1055                         this_delta_layer = - i->layer;
1056                 }
1057
1058                 int this_delta_time_axis_view = apply_track_delta(i->time_axis_view, delta_time_axis_view, delta_skip) - i->time_axis_view;
1059
1060                 int track_index = i->time_axis_view + this_delta_time_axis_view;
1061                 assert(track_index >= 0);
1062
1063                 if (track_index < 0 || track_index >= (int) _time_axis_views.size()) {
1064                         /* Track is in the Dropzone */
1065
1066                         i->time_axis_view = track_index;
1067                         assert(i->time_axis_view >= (int) _time_axis_views.size());
1068                         if (cur_y >= 0) {
1069
1070                                 double yposition = 0;
1071                                 PlaylistDropzoneMap::iterator pdz = playlist_dropzone_map.find (i->view->region()->playlist());
1072                                 rv->set_height (TimeAxisView::preset_height (HeightNormal));
1073                                 ++_ndropzone;
1074
1075                                 /* store index of each new playlist as a negative count, starting at -1 */
1076
1077                                 if (pdz == playlist_dropzone_map.end()) {
1078                                         /* compute where this new track (which doesn't exist yet) will live
1079                                            on the y-axis.
1080                                         */
1081                                         yposition = last_track_bottom_edge; /* where to place the top edge of the regionview */
1082
1083                                         /* How high is this region view ? */
1084
1085                                         boost::optional<ArdourCanvas::Rect> obbox = rv->get_canvas_group()->bounding_box ();
1086                                         ArdourCanvas::Rect bbox;
1087
1088                                         if (obbox) {
1089                                                 bbox = obbox.get ();
1090                                         }
1091
1092                                         last_track_bottom_edge += bbox.height();
1093
1094                                         playlist_dropzone_map.insert (make_pair (i->view->region()->playlist(), yposition));
1095
1096                                 } else {
1097                                         yposition = pdz->second;
1098                                 }
1099
1100                                 /* values are zero or negative, hence the use of min() */
1101                                 y_delta = yposition - rv->get_canvas_group()->canvas_origin().y;
1102                         }
1103
1104                 } else {
1105
1106                         /* The TimeAxisView that this region is now over */
1107                         TimeAxisView* current_tv = _time_axis_views[track_index];
1108
1109                         /* Ensure it is moved from stacked -> expanded if appropriate */
1110                         if (current_tv->view()->layer_display() == Stacked) {
1111                                 current_tv->view()->set_layer_display (Expanded);
1112                         }
1113
1114                         /* We're only allowed to go -ve in layer on Expanded views */
1115                         if (current_tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
1116                                 this_delta_layer = - i->layer;
1117                         }
1118
1119                         /* Set height */
1120                         rv->set_height (current_tv->view()->child_height ());
1121
1122                         /* Update show/hidden status as the region view may have come from a hidden track,
1123                            or have moved to one.
1124                         */
1125                         if (current_tv->hidden ()) {
1126                                 rv->get_canvas_group()->hide ();
1127                         } else {
1128                                 rv->get_canvas_group()->show ();
1129                         }
1130
1131                         /* Update the DraggingView */
1132                         i->time_axis_view = track_index;
1133                         i->layer += this_delta_layer;
1134
1135                         if (_brushing) {
1136                                 _editor->mouse_brush_insert_region (rv, pending_region_position);
1137                         } else {
1138                                 Duple track_origin;
1139
1140                                 /* Get the y coordinate of the top of the track that this region is now over */
1141                                 track_origin = current_tv->canvas_display()->item_to_canvas (track_origin);
1142
1143                                 /* And adjust for the layer that it should be on */
1144                                 StreamView* cv = current_tv->view ();
1145                                 switch (cv->layer_display ()) {
1146                                 case Overlaid:
1147                                         break;
1148                                 case Stacked:
1149                                         track_origin.y += (cv->layers() - i->layer - 1) * cv->child_height ();
1150                                         break;
1151                                 case Expanded:
1152                                         track_origin.y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
1153                                         break;
1154                                 }
1155
1156                                 /* need to get the parent of the regionview
1157                                  * canvas group and get its position in
1158                                  * equivalent coordinate space as the trackview
1159                                  * we are now dragging over.
1160                                  */
1161
1162                                 y_delta = track_origin.y - rv->get_canvas_group()->canvas_origin().y;
1163
1164                         }
1165                 }
1166
1167                 /* Now move the region view */
1168                 rv->move (x_delta, y_delta);
1169
1170         } /* foreach region */
1171
1172         _total_x_delta += x_delta;
1173
1174         if (x_delta != 0 && !_brushing) {
1175                 show_verbose_cursor_time (_last_frame_position);
1176         }
1177
1178         /* keep track of pointer movement */
1179         if (tv) {
1180                 /* the pointer is currently over a time axis view */
1181
1182                 if (_last_pointer_time_axis_view < 0) {
1183                         /* last motion event was not over a time axis view
1184                          * or last y-movement out of the dropzone was not valid
1185                          */
1186                         int dtz = 0;
1187                         if (delta_time_axis_view < 0) {
1188                                 /* in the drop zone, moving up */
1189
1190                                 /* _pdropzone is the last known pointer y-axis position inside the DZ.
1191                                  * We do not use negative _last_pointer_time_axis_view because
1192                                  * the dropzone is "packed" (the actual track offset is ignored)
1193                                  *
1194                                  * As opposed to the actual number
1195                                  * of elements in the dropzone (_ndropzone)
1196                                  * _pdropzone is not constrained. This is necessary
1197                                  * to allow moving multiple regions with y-distance
1198                                  * into the DZ.
1199                                  *
1200                                  * There can be 0 elements in the dropzone,
1201                                  * even though the drag-pointer is inside the DZ.
1202                                  *
1203                                  * example:
1204                                  * [ Audio-track, Midi-track, Audio-track, DZ ]
1205                                  * move regions from both audio tracks at the same time into the
1206                                  * DZ by grabbing the region in the bottom track.
1207                                  */
1208                                 assert(current_pointer_time_axis_view >= 0);
1209                                 dtz = std::min((int)_pdropzone, (int)_ddropzone - delta_time_axis_view);
1210                                 _pdropzone -= dtz;
1211                         }
1212
1213                         /* only move out of the zone if the movement is OK */
1214                         if (_pdropzone == 0 && delta_time_axis_view != 0) {
1215                                 assert(delta_time_axis_view < 0);
1216                                 _last_pointer_time_axis_view = current_pointer_time_axis_view;
1217                                 /* if all logic and maths are correct, there is no need to assign the 'current' pointer.
1218                                  * the current position can be calculated as follows:
1219                                  */
1220                                 // a well placed oofus attack can still throw this off.
1221                                 // likley auto-scroll related, printf() debugging may tell, commented out for now.
1222                                 //assert (current_pointer_time_axis_view == _time_axis_views.size() - dtz + _ddropzone + delta_time_axis_view);
1223                         }
1224                 } else {
1225                         /* last motion event was also over a time axis view */
1226                         _last_pointer_time_axis_view += delta_time_axis_view;
1227                         assert(_last_pointer_time_axis_view >= 0);
1228                 }
1229
1230         } else {
1231
1232                 /* the pointer is not over a time axis view */
1233                 assert ((delta_time_axis_view > 0) || (((int)_pdropzone) >= (delta_skip - delta_time_axis_view)));
1234                 _pdropzone += delta_time_axis_view - delta_skip;
1235                 _last_pointer_time_axis_view = -1; // <0 : we're in the zone, value does not matter.
1236         }
1237
1238         _last_pointer_layer += delta_layer;
1239 }
1240
1241 void
1242 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
1243 {
1244         if (_copy && first_move) {
1245                 if (_x_constrained && !_brushing) {
1246                         _editor->begin_reversible_command (Operations::fixed_time_region_copy);
1247                 } else if (!_brushing) {
1248                         _editor->begin_reversible_command (Operations::region_copy);
1249                 } else if (_brushing) {
1250                         _editor->begin_reversible_command (Operations::drag_region_brush);
1251                 }
1252                 /* duplicate the regionview(s) and region(s) */
1253
1254                 list<DraggingView> new_regionviews;
1255
1256                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1257
1258                         RegionView* rv = i->view;
1259                         AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1260                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1261
1262                         const boost::shared_ptr<const Region> original = rv->region();
1263                         boost::shared_ptr<Region> region_copy = RegionFactory::create (original, true);
1264                         region_copy->set_position (original->position());
1265                         /* need to set this so that the drop zone code can work. This doesn't
1266                            actually put the region into the playlist, but just sets a weak pointer
1267                            to it.
1268                         */
1269                         region_copy->set_playlist (original->playlist());
1270
1271                         RegionView* nrv;
1272                         if (arv) {
1273                                 boost::shared_ptr<AudioRegion> audioregion_copy
1274                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1275
1276                                 nrv = new AudioRegionView (*arv, audioregion_copy);
1277                         } else if (mrv) {
1278                                 boost::shared_ptr<MidiRegion> midiregion_copy
1279                                         = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1280                                 nrv = new MidiRegionView (*mrv, midiregion_copy);
1281                         } else {
1282                                 continue;
1283                         }
1284
1285                         nrv->get_canvas_group()->show ();
1286                         new_regionviews.push_back (DraggingView (nrv, this, i->initial_time_axis_view));
1287
1288                         /* swap _primary to the copy */
1289
1290                         if (rv == _primary) {
1291                                 _primary = nrv;
1292                         }
1293
1294                         /* ..and deselect the one we copied */
1295
1296                         rv->set_selected (false);
1297                 }
1298
1299                 if (!new_regionviews.empty()) {
1300
1301                         /* reflect the fact that we are dragging the copies */
1302
1303                         _views = new_regionviews;
1304
1305                         swap_grab (new_regionviews.front().view->get_canvas_group (), 0, event ? event->motion.time : 0);
1306                 }
1307
1308         } else if (!_copy && first_move) {
1309                 if (_x_constrained && !_brushing) {
1310                         _editor->begin_reversible_command (_("fixed time region drag"));
1311                 } else if (!_brushing) {
1312                         _editor->begin_reversible_command (Operations::region_drag);
1313                 } else if (_brushing) {
1314                         _editor->begin_reversible_command (Operations::drag_region_brush);
1315                 }
1316         }
1317         RegionMotionDrag::motion (event, first_move);
1318 }
1319
1320 void
1321 RegionMotionDrag::finished (GdkEvent *, bool)
1322 {
1323         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1324                 if (!(*i)->view()) {
1325                         continue;
1326                 }
1327
1328                 if ((*i)->view()->layer_display() == Expanded) {
1329                         (*i)->view()->set_layer_display (Stacked);
1330                 }
1331         }
1332 }
1333
1334 void
1335 RegionMoveDrag::finished (GdkEvent* ev, bool movement_occurred)
1336 {
1337         RegionMotionDrag::finished (ev, movement_occurred);
1338
1339         if (!movement_occurred) {
1340
1341                 /* just a click */
1342
1343                 if (was_double_click() && !_views.empty()) {
1344                         DraggingView dv = _views.front();
1345                         dv.view->show_region_editor ();
1346
1347                 }
1348
1349                 return;
1350         }
1351
1352         assert (!_views.empty ());
1353
1354         /* We might have hidden region views so that they weren't visible during the drag
1355            (when they have been reparented).  Now everything can be shown again, as region
1356            views are back in their track parent groups.
1357         */
1358         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1359                 i->view->get_canvas_group()->show ();
1360         }
1361
1362         bool const changed_position = (_last_frame_position != _primary->region()->position());
1363         bool const changed_tracks = (_time_axis_views[_views.front().time_axis_view] != &_views.front().view->get_time_axis_view());
1364         framecnt_t const drag_delta = _primary->region()->position() - _last_frame_position;
1365
1366         if (_copy) {
1367
1368                 finished_copy (
1369                         changed_position,
1370                         changed_tracks,
1371                         drag_delta
1372                         );
1373
1374         } else {
1375
1376                 finished_no_copy (
1377                         changed_position,
1378                         changed_tracks,
1379                         drag_delta
1380                         );
1381
1382         }
1383
1384         _editor->maybe_locate_with_edit_preroll (_editor->get_selection().regions.start());
1385 }
1386
1387 RouteTimeAxisView*
1388 RegionMoveDrag::create_destination_time_axis (boost::shared_ptr<Region> region, TimeAxisView* original)
1389 {
1390         /* Add a new track of the correct type, and return the RouteTimeAxisView that is created to display the
1391            new track.
1392          */
1393
1394         try {
1395                 if (boost::dynamic_pointer_cast<AudioRegion> (region)) {
1396                         list<boost::shared_ptr<AudioTrack> > audio_tracks;
1397                         uint32_t output_chan = region->n_channels();
1398                         if ((Config->get_output_auto_connect() & AutoConnectMaster) && _editor->session()->master_out()) {
1399                                 output_chan =  _editor->session()->master_out()->n_inputs().n_audio();
1400                         }
1401                         audio_tracks = _editor->session()->new_audio_track (region->n_channels(), output_chan, ARDOUR::Normal, 0, 1, region->name());
1402                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (audio_tracks.front());
1403                         if (rtav) {
1404                                 rtav->set_height (original->current_height());
1405                         }
1406                         return rtav;
1407                 } else {
1408                         ChanCount one_midi_port (DataType::MIDI, 1);
1409                         list<boost::shared_ptr<MidiTrack> > midi_tracks;
1410                         midi_tracks = _editor->session()->new_midi_track (one_midi_port, one_midi_port, boost::shared_ptr<ARDOUR::PluginInfo>(), ARDOUR::Normal, 0, 1, region->name());
1411                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (midi_tracks.front());
1412                         if (rtav) {
1413                                 rtav->set_height (original->current_height());
1414                         }
1415                         return rtav;
1416                 }
1417         } catch (...) {
1418                 error << _("Could not create new track after region placed in the drop zone") << endmsg;
1419                 return 0;
1420         }
1421 }
1422
1423 void
1424 RegionMoveDrag::finished_copy (bool const changed_position, bool const /*changed_tracks*/, framecnt_t const drag_delta)
1425 {
1426         RegionSelection new_views;
1427         PlaylistSet modified_playlists;
1428         RouteTimeAxisView* new_time_axis_view = 0;
1429
1430         if (_brushing) {
1431                 /* all changes were made during motion event handlers */
1432
1433                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1434                         delete i->view;
1435                 }
1436
1437                 _editor->commit_reversible_command ();
1438                 return;
1439         }
1440
1441         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1442         PlaylistMapping playlist_mapping;
1443
1444         /* insert the regions into their new playlists */
1445         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1446
1447                 RouteTimeAxisView* dest_rtv = 0;
1448
1449                 if (i->view->region()->locked() || (i->view->region()->video_locked() && !_ignore_video_lock)) {
1450                         continue;
1451                 }
1452
1453                 framepos_t where;
1454
1455                 if (changed_position && !_x_constrained) {
1456                         where = i->view->region()->position() - drag_delta;
1457                 } else {
1458                         where = i->view->region()->position();
1459                 }
1460
1461                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1462                         /* dragged to drop zone */
1463
1464                         PlaylistMapping::iterator pm;
1465
1466                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1467                                 /* first region from this original playlist: create a new track */
1468                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1469                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1470                                 dest_rtv = new_time_axis_view;
1471                         } else {
1472                                 /* we already created a new track for regions from this playlist, use it */
1473                                 dest_rtv = pm->second;
1474                         }
1475                 } else {
1476                         /* destination time axis view is the one we dragged to */
1477                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1478                 }
1479
1480                 if (dest_rtv != 0) {
1481                         RegionView* new_view = insert_region_into_playlist (i->view->region(), dest_rtv, i->layer, where, modified_playlists);
1482                         if (new_view != 0) {
1483                                 new_views.push_back (new_view);
1484                         }
1485                 }
1486
1487                 /* Delete the copy of the view that was used for dragging. Need to play safe with the iterator
1488                    since deletion will automagically remove it from _views, thus invalidating i as an iterator.
1489                  */
1490
1491                 list<DraggingView>::const_iterator next = i;
1492                 ++next;
1493                 delete i->view;
1494                 i = next;
1495         }
1496
1497         /* If we've created new regions either by copying or moving
1498            to a new track, we want to replace the old selection with the new ones
1499         */
1500
1501         if (new_views.size() > 0) {
1502                 _editor->selection->set (new_views);
1503         }
1504
1505         /* write commands for the accumulated diffs for all our modified playlists */
1506         add_stateful_diff_commands_for_playlists (modified_playlists);
1507
1508         _editor->commit_reversible_command ();
1509 }
1510
1511 void
1512 RegionMoveDrag::finished_no_copy (
1513         bool const changed_position,
1514         bool const changed_tracks,
1515         framecnt_t const drag_delta
1516         )
1517 {
1518         RegionSelection new_views;
1519         PlaylistSet modified_playlists;
1520         PlaylistSet frozen_playlists;
1521         set<RouteTimeAxisView*> views_to_update;
1522         RouteTimeAxisView* new_time_axis_view = 0;
1523
1524         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1525         PlaylistMapping playlist_mapping;
1526
1527         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ) {
1528
1529                 RegionView* rv = i->view;
1530                 RouteTimeAxisView* dest_rtv = 0;
1531
1532                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1533                         ++i;
1534                         continue;
1535                 }
1536
1537                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1538                         /* dragged to drop zone */
1539
1540                         PlaylistMapping::iterator pm;
1541
1542                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1543                                 /* first region from this original playlist: create a new track */
1544                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1545                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1546                                 dest_rtv = new_time_axis_view;
1547                         } else {
1548                                 /* we already created a new track for regions from this playlist, use it */
1549                                 dest_rtv = pm->second;
1550                         }
1551
1552                 } else {
1553                         /* destination time axis view is the one we dragged to */
1554                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1555                 }
1556
1557                 assert (dest_rtv);
1558
1559                 double const dest_layer = i->layer;
1560
1561                 views_to_update.insert (dest_rtv);
1562
1563                 framepos_t where;
1564
1565                 if (changed_position && !_x_constrained) {
1566                         where = rv->region()->position() - drag_delta;
1567                 } else {
1568                         where = rv->region()->position();
1569                 }
1570
1571                 if (changed_tracks) {
1572
1573                         /* insert into new playlist */
1574
1575                         RegionView* new_view = insert_region_into_playlist (
1576                                 RegionFactory::create (rv->region (), true), dest_rtv, dest_layer, where, modified_playlists
1577                                 );
1578
1579                         if (new_view == 0) {
1580                                 ++i;
1581                                 continue;
1582                         }
1583
1584                         new_views.push_back (new_view);
1585
1586                         /* remove from old playlist */
1587
1588                         /* the region that used to be in the old playlist is not
1589                            moved to the new one - we use a copy of it. as a result,
1590                            any existing editor for the region should no longer be
1591                            visible.
1592                         */
1593                         rv->hide_region_editor();
1594
1595
1596                         remove_region_from_playlist (rv->region(), i->initial_playlist, modified_playlists);
1597
1598                 } else {
1599
1600                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1601
1602                         /* this movement may result in a crossfade being modified, or a layering change,
1603                            so we need to get undo data from the playlist as well as the region.
1604                         */
1605
1606                         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (playlist);
1607                         if (r.second) {
1608                                 playlist->clear_changes ();
1609                         }
1610
1611                         rv->region()->clear_changes ();
1612
1613                         /*
1614                            motion on the same track. plonk the previously reparented region
1615                            back to its original canvas group (its streamview).
1616                            No need to do anything for copies as they are fake regions which will be deleted.
1617                         */
1618
1619                         rv->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1620                         rv->get_canvas_group()->set_y_position (i->initial_y);
1621                         rv->drag_end ();
1622
1623                         /* just change the model */
1624                         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1625                                 playlist->set_layer (rv->region(), dest_layer);
1626                         }
1627
1628                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
1629
1630                         r = frozen_playlists.insert (playlist);
1631
1632                         if (r.second) {
1633                                 playlist->freeze ();
1634                         }
1635
1636                         rv->region()->set_position (where);
1637                         _editor->session()->add_command (new StatefulDiffCommand (rv->region()));
1638                 }
1639
1640                 if (changed_tracks) {
1641
1642                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1643                            was selected in all of them, then removing it from a playlist will have removed all
1644                            trace of it from _views (i.e. there were N regions selected, we removed 1,
1645                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1646                            corresponding regionview, and _views is now empty).
1647
1648                            This could have invalidated any and all iterators into _views.
1649
1650                            The heuristic we use here is: if the region selection is empty, break out of the loop
1651                            here. if the region selection is not empty, then restart the loop because we know that
1652                            we must have removed at least the region(view) we've just been working on as well as any
1653                            that we processed on previous iterations.
1654
1655                            EXCEPT .... if we are doing a copy drag, then _views hasn't been modified and
1656                            we can just iterate.
1657                         */
1658
1659
1660                         if (_views.empty()) {
1661                                 break;
1662                         } else {
1663                                 i = _views.begin();
1664                         }
1665
1666                 } else {
1667                         ++i;
1668                 }
1669         }
1670
1671         /* If we've created new regions either by copying or moving
1672            to a new track, we want to replace the old selection with the new ones
1673         */
1674
1675         if (new_views.size() > 0) {
1676                 _editor->selection->set (new_views);
1677         }
1678
1679         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1680                 (*p)->thaw();
1681         }
1682
1683         /* write commands for the accumulated diffs for all our modified playlists */
1684         add_stateful_diff_commands_for_playlists (modified_playlists);
1685         /* applies to _brushing */
1686         _editor->commit_reversible_command ();
1687
1688         /* We have futzed with the layering of canvas items on our streamviews.
1689            If any region changed layer, this will have resulted in the stream
1690            views being asked to set up their region views, and all will be well.
1691            If not, we might now have badly-ordered region views.  Ask the StreamViews
1692            involved to sort themselves out, just in case.
1693         */
1694
1695         for (set<RouteTimeAxisView*>::iterator i = views_to_update.begin(); i != views_to_update.end(); ++i) {
1696                 (*i)->view()->playlist_layered ((*i)->track ());
1697         }
1698 }
1699
1700 /** Remove a region from a playlist, clearing the diff history of the playlist first if necessary.
1701  *  @param region Region to remove.
1702  *  @param playlist playlist To remove from.
1703  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1704  *  that clear_changes () is only called once per playlist.
1705  */
1706 void
1707 RegionMoveDrag::remove_region_from_playlist (
1708         boost::shared_ptr<Region> region,
1709         boost::shared_ptr<Playlist> playlist,
1710         PlaylistSet& modified_playlists
1711         )
1712 {
1713         pair<set<boost::shared_ptr<Playlist> >::iterator, bool> r = modified_playlists.insert (playlist);
1714
1715         if (r.second) {
1716                 playlist->clear_changes ();
1717         }
1718
1719         playlist->remove_region (region); // should be no need to ripple; we better already have rippled the playlist in RegionRippleDrag
1720 }
1721
1722
1723 /** Insert a region into a playlist, handling the recovery of the resulting new RegionView, and
1724  *  clearing the playlist's diff history first if necessary.
1725  *  @param region Region to insert.
1726  *  @param dest_rtv Destination RouteTimeAxisView.
1727  *  @param dest_layer Destination layer.
1728  *  @param where Destination position.
1729  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1730  *  that clear_changes () is only called once per playlist.
1731  *  @return New RegionView, or 0 if no insert was performed.
1732  */
1733 RegionView *
1734 RegionMoveDrag::insert_region_into_playlist (
1735         boost::shared_ptr<Region> region,
1736         RouteTimeAxisView* dest_rtv,
1737         layer_t dest_layer,
1738         framecnt_t where,
1739         PlaylistSet& modified_playlists
1740         )
1741 {
1742         boost::shared_ptr<Playlist> dest_playlist = dest_rtv->playlist ();
1743         if (!dest_playlist) {
1744                 return 0;
1745         }
1746
1747         /* arrange to collect the new region view that will be created as a result of our playlist insertion */
1748         _new_region_view = 0;
1749         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &RegionMoveDrag::collect_new_region_view));
1750
1751         /* clear history for the playlist we are about to insert to, provided we haven't already done so */
1752         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (dest_playlist);
1753         if (r.second) {
1754                 dest_playlist->clear_changes ();
1755         }
1756
1757         dest_playlist->add_region (region, where);
1758
1759         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1760                 dest_playlist->set_layer (region, dest_layer);
1761         }
1762
1763         c.disconnect ();
1764
1765         assert (_new_region_view);
1766
1767         return _new_region_view;
1768 }
1769
1770 void
1771 RegionMoveDrag::collect_new_region_view (RegionView* rv)
1772 {
1773         _new_region_view = rv;
1774 }
1775
1776 void
1777 RegionMoveDrag::add_stateful_diff_commands_for_playlists (PlaylistSet const & playlists)
1778 {
1779         for (PlaylistSet::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
1780                 StatefulDiffCommand* c = new StatefulDiffCommand (*i);
1781                 if (!c->empty()) {
1782                         _editor->session()->add_command (c);
1783                 } else {
1784                         delete c;
1785                 }
1786         }
1787 }
1788
1789
1790 void
1791 RegionMoveDrag::aborted (bool movement_occurred)
1792 {
1793         if (_copy) {
1794
1795                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1796                         list<DraggingView>::const_iterator next = i;
1797                         ++next;
1798                         delete i->view;
1799                         i = next;
1800                 }
1801
1802                 _views.clear ();
1803
1804         } else {
1805                 RegionMotionDrag::aborted (movement_occurred);
1806         }
1807 }
1808
1809 void
1810 RegionMotionDrag::aborted (bool)
1811 {
1812         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1813
1814                 StreamView* sview = (*i)->view();
1815
1816                 if (sview) {
1817                         if (sview->layer_display() == Expanded) {
1818                                 sview->set_layer_display (Stacked);
1819                         }
1820                 }
1821         }
1822
1823         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1824                 RegionView* rv = i->view;
1825                 TimeAxisView* tv = &(rv->get_time_axis_view ());
1826                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1827                 assert (rtv);
1828                 rv->get_canvas_group()->reparent (rtv->view()->canvas_item());
1829                 rv->get_canvas_group()->set_y_position (0);
1830                 rv->drag_end ();
1831                 rv->move (-_total_x_delta, 0);
1832                 rv->set_height (rtv->view()->child_height ());
1833         }
1834 }
1835
1836 /** @param b true to brush, otherwise false.
1837  *  @param c true to make copies of the regions being moved, otherwise false.
1838  */
1839 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1840         : RegionMotionDrag (e, i, p, v, b)
1841         , _copy (c)
1842         , _new_region_view (0)
1843 {
1844         DEBUG_TRACE (DEBUG::Drags, "New RegionMoveDrag\n");
1845
1846         double speed = 1;
1847         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&_primary->get_time_axis_view ());
1848         if (rtv && rtv->is_track()) {
1849                 speed = rtv->track()->speed ();
1850         }
1851
1852         _last_frame_position = static_cast<framepos_t> (_primary->region()->position() / speed);
1853 }
1854
1855 void
1856 RegionMoveDrag::setup_pointer_frame_offset ()
1857 {
1858         _pointer_frame_offset = raw_grab_frame() - _last_frame_position;
1859 }
1860
1861 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, framepos_t pos)
1862         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1863 {
1864         DEBUG_TRACE (DEBUG::Drags, "New RegionInsertDrag\n");
1865
1866         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1867                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1868
1869         _primary = v->view()->create_region_view (r, false, false);
1870
1871         _primary->get_canvas_group()->show ();
1872         _primary->set_position (pos, 0);
1873         _views.push_back (DraggingView (_primary, this, v));
1874
1875         _last_frame_position = pos;
1876
1877         _item = _primary->get_canvas_group ();
1878 }
1879
1880 void
1881 RegionInsertDrag::finished (GdkEvent *, bool)
1882 {
1883         int pos = _views.front().time_axis_view;
1884         assert(pos >= 0 && pos < (int)_time_axis_views.size());
1885
1886         RouteTimeAxisView* dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[pos]);
1887
1888         _primary->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1889         _primary->get_canvas_group()->set_y_position (0);
1890
1891         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1892
1893         _editor->begin_reversible_command (Operations::insert_region);
1894         playlist->clear_changes ();
1895         playlist->add_region (_primary->region (), _last_frame_position);
1896
1897         // Mixbus doesn't seem to ripple when inserting regions from the list: should we? yes, probably
1898         if (Config->get_edit_mode() == Ripple) {
1899                 playlist->ripple (_last_frame_position, _primary->region()->length(), _primary->region());
1900         }
1901
1902         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1903         _editor->commit_reversible_command ();
1904
1905         delete _primary;
1906         _primary = 0;
1907         _views.clear ();
1908 }
1909
1910 void
1911 RegionInsertDrag::aborted (bool)
1912 {
1913         delete _primary;
1914         _primary = 0;
1915         _views.clear ();
1916 }
1917
1918 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1919         : RegionMoveDrag (e, i, p, v, false, false)
1920 {
1921         DEBUG_TRACE (DEBUG::Drags, "New RegionSpliceDrag\n");
1922 }
1923
1924 struct RegionSelectionByPosition {
1925         bool operator() (RegionView*a, RegionView* b) {
1926                 return a->region()->position () < b->region()->position();
1927         }
1928 };
1929
1930 void
1931 RegionSpliceDrag::motion (GdkEvent* event, bool)
1932 {
1933         /* Which trackview is this ? */
1934
1935         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
1936         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1937
1938         /* The region motion is only processed if the pointer is over
1939            an audio track.
1940         */
1941
1942         if (!tv || !tv->is_track()) {
1943                 /* To make sure we hide the verbose canvas cursor when the mouse is
1944                    not held over an audio track.
1945                 */
1946                 _editor->verbose_cursor()->hide ();
1947                 return;
1948         } else {
1949                 _editor->verbose_cursor()->show ();
1950         }
1951
1952         int dir;
1953
1954         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1955                 dir = 1;
1956         } else {
1957                 dir = -1;
1958         }
1959
1960         RegionSelection copy;
1961         _editor->selection->regions.by_position(copy);
1962
1963         framepos_t const pf = adjusted_current_frame (event);
1964
1965         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1966
1967                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1968
1969                 if (!atv) {
1970                         continue;
1971                 }
1972
1973                 boost::shared_ptr<Playlist> playlist;
1974
1975                 if ((playlist = atv->playlist()) == 0) {
1976                         continue;
1977                 }
1978
1979                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1980                         continue;
1981                 }
1982
1983                 if (dir > 0) {
1984                         if (pf < (*i)->region()->last_frame() + 1) {
1985                                 continue;
1986                         }
1987                 } else {
1988                         if (pf > (*i)->region()->first_frame()) {
1989                                 continue;
1990                         }
1991                 }
1992
1993
1994                 playlist->shuffle ((*i)->region(), dir);
1995         }
1996 }
1997
1998 void
1999 RegionSpliceDrag::finished (GdkEvent* event, bool movement_occurred)
2000 {
2001         RegionMoveDrag::finished (event, movement_occurred);
2002 }
2003
2004 void
2005 RegionSpliceDrag::aborted (bool)
2006 {
2007         /* XXX: TODO */
2008 }
2009
2010 /***
2011  * ripple mode...
2012  */
2013
2014 void
2015 RegionRippleDrag::add_all_after_to_views(TimeAxisView *tav, framepos_t where, const RegionSelection &exclude, bool drag_in_progress)
2016 {
2017
2018         boost::shared_ptr<RegionList> rl = tav->playlist()->regions_with_start_within (Evoral::Range<framepos_t>(where, max_framepos));
2019
2020         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(tav);
2021         RegionSelection to_ripple;
2022         for (RegionList::iterator i = rl->begin(); i != rl->end(); ++i) {
2023                 if ((*i)->position() >= where) {
2024                         to_ripple.push_back (rtv->view()->find_view(*i));
2025                 }
2026         }
2027
2028         for (RegionSelection::iterator i = to_ripple.begin(); i != to_ripple.end(); ++i) {
2029                 if (!exclude.contains (*i)) {
2030                         // the selection has already been added to _views
2031
2032                         if (drag_in_progress) {
2033                                 // do the same things that RegionMotionDrag::motion does when
2034                                 // first_move is true, for the region views that we're adding
2035                                 // to _views this time
2036
2037                                 (*i)->drag_start();
2038                                 ArdourCanvas::Item* rvg = (*i)->get_canvas_group();
2039                                 Duple rv_canvas_offset = rvg->item_to_canvas (Duple (0,0));
2040                                 Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
2041                                 rvg->reparent (_editor->_drag_motion_group);
2042
2043                                 // we only need to move in the y direction
2044                                 Duple fudge = rv_canvas_offset - dmg_canvas_offset;
2045                                 fudge.x = 0;
2046                                 rvg->move (fudge);
2047
2048                         }
2049                         _views.push_back (DraggingView (*i, this, tav));
2050                 }
2051         }
2052 }
2053
2054 void
2055 RegionRippleDrag::remove_unselected_from_views(framecnt_t amount, bool move_regions)
2056 {
2057
2058         for (std::list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ) {
2059                 // we added all the regions after the selection
2060
2061                 std::list<DraggingView>::iterator to_erase = i++;
2062                 if (!_editor->selection->regions.contains (to_erase->view)) {
2063                         // restore the non-selected regions to their original playlist & positions,
2064                         // and then ripple them back by the length of the regions that were dragged away
2065                         // do the same things as RegionMotionDrag::aborted
2066
2067                         RegionView *rv = to_erase->view;
2068                         TimeAxisView* tv = &(rv->get_time_axis_view ());
2069                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
2070                         assert (rtv);
2071
2072                         // plonk them back onto their own track
2073                         rv->get_canvas_group()->reparent(rtv->view()->canvas_item());
2074                         rv->get_canvas_group()->set_y_position (0);
2075                         rv->drag_end ();
2076
2077                         if (move_regions) {
2078                                 // move the underlying region to match the view
2079                                 rv->region()->set_position (rv->region()->position() + amount);
2080                         } else {
2081                                 // restore the view to match the underlying region's original position
2082                                 rv->move(-amount, 0);   // second parameter is y delta - seems 0 is OK
2083                         }
2084
2085                         rv->set_height (rtv->view()->child_height ());
2086                         _views.erase (to_erase);
2087                 }
2088         }
2089 }
2090
2091 bool
2092 RegionRippleDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
2093 {
2094         if (RegionMotionDrag::y_movement_allowed (delta_track, delta_layer, skip_invisible)) {
2095                 if (delta_track) {
2096                         return allow_moves_across_tracks;
2097                 } else {
2098                         return true;
2099                 }
2100         }
2101         return false;
2102 }
2103
2104 RegionRippleDrag::RegionRippleDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2105         : RegionMoveDrag (e, i, p, v, false, false)
2106 {
2107         DEBUG_TRACE (DEBUG::Drags, "New RegionRippleDrag\n");
2108         // compute length of selection
2109         RegionSelection selected_regions = _editor->selection->regions;
2110         selection_length = selected_regions.end_frame() - selected_regions.start();
2111
2112         // we'll only allow dragging to another track in ripple mode if all the regions
2113         // being dragged start off on the same track
2114         allow_moves_across_tracks = (selected_regions.playlists().size() == 1);
2115         prev_tav = NULL;
2116         prev_amount = 0;
2117         exclude = new RegionList;
2118         for (RegionSelection::iterator i =selected_regions.begin(); i != selected_regions.end(); ++i) {
2119                 exclude->push_back((*i)->region());
2120         }
2121
2122         // also add regions before start of selection to exclude, to be consistent with how Mixbus does ripple
2123         RegionSelection copy;
2124         selected_regions.by_position(copy); // get selected regions sorted by position into copy
2125
2126         std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = copy.playlists();
2127         std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2128
2129         for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2130                 // find ripple start point on each applicable playlist
2131                 RegionView *first_selected_on_this_track = NULL;
2132                 for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
2133                         if ((*i)->region()->playlist() == (*pi)) {
2134                                 // region is on this playlist - it's the first, because they're sorted
2135                                 first_selected_on_this_track = *i;
2136                                 break;
2137                         }
2138                 }
2139                 assert (first_selected_on_this_track); // we should always find the region in one of the playlists...
2140                 add_all_after_to_views (
2141                                 &first_selected_on_this_track->get_time_axis_view(),
2142                                 first_selected_on_this_track->region()->position(),
2143                                 selected_regions, false);
2144         }
2145
2146         if (allow_moves_across_tracks) {
2147                 orig_tav = &(*selected_regions.begin())->get_time_axis_view();
2148         } else {
2149                 orig_tav = NULL;
2150         }
2151
2152 }
2153
2154 void
2155 RegionRippleDrag::motion (GdkEvent* event, bool first_move)
2156 {
2157         /* Which trackview is this ? */
2158
2159         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
2160         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
2161
2162         /* The region motion is only processed if the pointer is over
2163            an audio track.
2164          */
2165
2166         if (!tv || !tv->is_track()) {
2167                 /* To make sure we hide the verbose canvas cursor when the mouse is
2168                    not held over an audiotrack.
2169                  */
2170                 _editor->verbose_cursor()->hide ();
2171                 return;
2172         }
2173
2174         framepos_t where = adjusted_current_frame (event);
2175         assert (where >= 0);
2176         framepos_t after;
2177         double delta = compute_x_delta (event, &after);
2178
2179         framecnt_t amount = _editor->pixel_to_sample (delta);
2180
2181         if (allow_moves_across_tracks) {
2182                 // all the originally selected regions were on the same track
2183
2184                 framecnt_t adjust = 0;
2185                 if (prev_tav && tv != prev_tav) {
2186                         // dragged onto a different track
2187                         // remove the unselected regions from _views, restore them to their original positions
2188                         // and add the regions after the drop point on the new playlist to _views instead.
2189                         // undo the effect of rippling the previous playlist, and include the effect of removing
2190                         // the dragged region(s) from this track
2191
2192                         remove_unselected_from_views (prev_amount, false);
2193                         // ripple previous playlist according to the regions that have been removed onto the new playlist
2194                         prev_tav->playlist()->ripple(prev_position, -selection_length, exclude);
2195                         prev_amount = 0;
2196
2197                         // move just the selected regions
2198                         RegionMoveDrag::motion(event, first_move);
2199
2200                         // ensure that the ripple operation on the new playlist inserts selection_length time
2201                         adjust = selection_length;
2202                         // ripple the new current playlist
2203                         tv->playlist()->ripple (where, amount+adjust, exclude);
2204
2205                         // add regions after point where drag entered this track to subsequent ripples
2206                         add_all_after_to_views (tv, where, _editor->selection->regions, true);
2207
2208                 } else {
2209                         // motion on same track
2210                         RegionMoveDrag::motion(event, first_move);
2211                 }
2212                 prev_tav = tv;
2213
2214                 // remember what we've done to this playlist so we can undo it if the selection is dragged to another track
2215                 prev_position = where;
2216         } else {
2217                 // selection encompasses multiple tracks - just drag
2218                 // cross-track drags are forbidden
2219                 RegionMoveDrag::motion(event, first_move);
2220         }
2221
2222         if (!_x_constrained) {
2223                 prev_amount += amount;
2224         }
2225
2226         _last_frame_position = after;
2227 }
2228
2229 void
2230 RegionRippleDrag::finished (GdkEvent* event, bool movement_occurred)
2231 {
2232         if (!movement_occurred) {
2233
2234                 /* just a click */
2235
2236                 if (was_double_click() && !_views.empty()) {
2237                         DraggingView dv = _views.front();
2238                         dv.view->show_region_editor ();
2239
2240                 }
2241
2242                 return;
2243         }
2244
2245         _editor->begin_reversible_command(_("Ripple drag"));
2246
2247         // remove the regions being rippled from the dragging view, updating them to
2248         // their new positions
2249         remove_unselected_from_views (prev_amount, true);
2250
2251         if (allow_moves_across_tracks) {
2252                 if (orig_tav) {
2253                         // if regions were dragged across tracks, we've rippled any later
2254                         // regions on the track the regions were dragged off, so we need
2255                         // to add the original track to the undo record
2256                         orig_tav->playlist()->clear_changes();
2257                         vector<Command*> cmds;
2258                         orig_tav->playlist()->rdiff (cmds);
2259                         _editor->session()->add_commands (cmds);
2260                 }
2261                 if (prev_tav && prev_tav != orig_tav) {
2262                         prev_tav->playlist()->clear_changes();
2263                         vector<Command*> cmds;
2264                         prev_tav->playlist()->rdiff (cmds);
2265                         _editor->session()->add_commands (cmds);
2266                 }
2267         } else {
2268                 // selection spanned multiple tracks - all will need adding to undo record
2269
2270                 std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = _editor->selection->regions.playlists();
2271                 std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2272
2273                 for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2274                         (*pi)->clear_changes();
2275                         vector<Command*> cmds;
2276                         (*pi)->rdiff (cmds);
2277                         _editor->session()->add_commands (cmds);
2278                 }
2279         }
2280
2281         // other modified playlists are added to undo by RegionMoveDrag::finished()
2282         RegionMoveDrag::finished (event, movement_occurred);
2283         _editor->commit_reversible_command();
2284 }
2285
2286 void
2287 RegionRippleDrag::aborted (bool movement_occurred)
2288 {
2289         RegionMoveDrag::aborted (movement_occurred);
2290         _views.clear ();
2291 }
2292
2293
2294 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
2295         : Drag (e, i),
2296           _view (dynamic_cast<MidiTimeAxisView*> (v))
2297 {
2298         DEBUG_TRACE (DEBUG::Drags, "New RegionCreateDrag\n");
2299
2300         assert (_view);
2301 }
2302
2303 void
2304 RegionCreateDrag::motion (GdkEvent* event, bool first_move)
2305 {
2306         if (first_move) {
2307                 _editor->begin_reversible_command (_("create region"));
2308                 _region = add_midi_region (_view, false);
2309                 _view->playlist()->freeze ();
2310         } else {
2311                 if (_region) {
2312                         framepos_t const f = adjusted_current_frame (event);
2313                         if (f < grab_frame()) {
2314                                 _region->set_initial_position (f);
2315                         }
2316
2317                         /* Don't use a zero-length region, and subtract 1 frame from the snapped length
2318                            so that if this region is duplicated, its duplicate starts on
2319                            a snap point rather than 1 frame after a snap point.  Otherwise things get
2320                            a bit confusing as if a region starts 1 frame after a snap point, one cannot
2321                            place snapped notes at the start of the region.
2322                         */
2323
2324                         framecnt_t const len = (framecnt_t) fabs ((double)(f - grab_frame () - 1));
2325                         _region->set_length (len < 1 ? 1 : len);
2326                 }
2327         }
2328 }
2329
2330 void
2331 RegionCreateDrag::finished (GdkEvent*, bool movement_occurred)
2332 {
2333         if (!movement_occurred) {
2334                 add_midi_region (_view, true);
2335         } else {
2336                 _view->playlist()->thaw ();
2337                 _editor->commit_reversible_command();
2338         }
2339 }
2340
2341 void
2342 RegionCreateDrag::aborted (bool)
2343 {
2344         if (_region) {
2345                 _view->playlist()->thaw ();
2346         }
2347
2348         /* XXX */
2349 }
2350
2351 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
2352         : Drag (e, i)
2353         , region (0)
2354         , relative (false)
2355         , at_front (true)
2356         , _was_selected (false)
2357         , _snap_delta (0)
2358 {
2359         DEBUG_TRACE (DEBUG::Drags, "New NoteResizeDrag\n");
2360 }
2361
2362 void
2363 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*ignored*/)
2364 {
2365         Gdk::Cursor* cursor;
2366         NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2367         assert (cnote);
2368         float x_fraction = cnote->mouse_x_fraction ();
2369
2370         if (x_fraction > 0.0 && x_fraction < 0.25) {
2371                 cursor = _editor->cursors()->left_side_trim;
2372                 at_front = true;
2373         } else  {
2374                 cursor = _editor->cursors()->right_side_trim;
2375                 at_front = false;
2376         }
2377
2378         Drag::start_grab (event, cursor);
2379
2380         region = &cnote->region_view();
2381
2382         double temp;
2383         temp = region->snap_to_pixel (cnote->x0 (), true);
2384         _snap_delta = temp - cnote->x0 ();
2385
2386         _item->grab ();
2387
2388         if (event->motion.state & ArdourKeyboard::note_size_relative_modifier ()) {
2389                 relative = false;
2390         } else {
2391                 relative = true;
2392         }
2393         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2394         if (ms.size() > 1) {
2395                 /* has to be relative, may make no sense otherwise */
2396                 relative = true;
2397         }
2398
2399         if (!(_was_selected = cnote->selected())) {
2400
2401                 /* tertiary-click means extend selection - we'll do that on button release,
2402                    so don't add it here, because otherwise we make it hard to figure
2403                    out the "extend-to" range.
2404                 */
2405
2406                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2407
2408                 if (!extend) {
2409                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2410
2411                         if (add) {
2412                                 region->note_selected (cnote, true);
2413                         } else {
2414                                 _editor->get_selection().clear_points();
2415                                 region->unique_select (cnote);
2416                         }
2417                 }
2418         }
2419 }
2420
2421 void
2422 NoteResizeDrag::motion (GdkEvent* event, bool first_move)
2423 {
2424         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2425         if (first_move) {
2426                 _editor->begin_reversible_command (_("resize notes"));
2427
2428                 for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
2429                         MidiRegionSelection::iterator next;
2430                         next = r;
2431                         ++next;
2432                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2433                         if (mrv) {
2434                                 mrv->begin_resizing (at_front);
2435                         }
2436                         r = next;
2437                 }
2438         }
2439
2440         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2441                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2442                 assert (nb);
2443                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2444                 if (mrv) {
2445                         double sd = 0.0;
2446                         bool snap = true;
2447                         bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2448
2449                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2450                                 if (_editor->snap_mode () != SnapOff) {
2451                                         snap = false;
2452                                 }
2453                         } else {
2454                                 if (_editor->snap_mode () == SnapOff) {
2455                                         snap = false;
2456                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2457                                         if (apply_snap_delta) {
2458                                                 snap = true;
2459                                         }
2460                                 }
2461                         }
2462
2463                         if (apply_snap_delta) {
2464                                 sd = _snap_delta;
2465                         }
2466
2467                         mrv->update_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2468                 }
2469         }
2470 }
2471
2472 void
2473 NoteResizeDrag::finished (GdkEvent* event, bool movement_occurred)
2474 {
2475         if (!movement_occurred) {
2476                 /* no motion - select note */
2477                 NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2478                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
2479                     _editor->current_mouse_mode() == Editing::MouseDraw) {
2480
2481                         bool changed = false;
2482
2483                         if (_was_selected) {
2484                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2485                                 if (add) {
2486                                         region->note_deselected (cnote);
2487                                         changed = true;
2488                                 } else {
2489                                         _editor->get_selection().clear_points();
2490                                         region->unique_select (cnote);
2491                                         changed = true;
2492                                 }
2493                         } else {
2494                                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2495                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2496
2497                                 if (!extend && !add && region->selection_size() > 1) {
2498                                         _editor->get_selection().clear_points();
2499                                         region->unique_select (cnote);
2500                                         changed = true;
2501                                 } else if (extend) {
2502                                         region->note_selected (cnote, true, true);
2503                                         changed = true;
2504                                 } else {
2505                                         /* it was added during button press */
2506                                         changed = true;
2507                                 }
2508                         }
2509
2510                         if (changed) {
2511                                 _editor->begin_reversible_selection_op(X_("Resize Select Note Release"));
2512                                 _editor->commit_reversible_selection_op();
2513                         }
2514                 }
2515
2516                 return;
2517         }
2518
2519         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2520         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2521                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2522                 assert (nb);
2523                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2524                 double sd = 0.0;
2525                 bool snap = true;
2526                 bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2527                 if (mrv) {
2528                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2529                                 if (_editor->snap_mode () != SnapOff) {
2530                                         snap = false;
2531                                 }
2532                         } else {
2533                                 if (_editor->snap_mode () == SnapOff) {
2534                                         snap = false;
2535                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2536                                         if (apply_snap_delta) {
2537                                                 snap = true;
2538                                         }
2539                                 }
2540                         }
2541
2542                         if (apply_snap_delta) {
2543                                 sd = _snap_delta;
2544                         }
2545
2546                         mrv->commit_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2547                 }
2548         }
2549
2550         _editor->commit_reversible_command ();
2551 }
2552
2553 void
2554 NoteResizeDrag::aborted (bool)
2555 {
2556         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2557         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2558                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2559                 if (mrv) {
2560                         mrv->abort_resizing ();
2561                 }
2562         }
2563 }
2564
2565 AVDraggingView::AVDraggingView (RegionView* v)
2566         : view (v)
2567 {
2568         initial_position = v->region()->position ();
2569 }
2570
2571 VideoTimeLineDrag::VideoTimeLineDrag (Editor* e, ArdourCanvas::Item* i)
2572         : Drag (e, i)
2573 {
2574         DEBUG_TRACE (DEBUG::Drags, "New VideoTimeLineDrag\n");
2575
2576         RegionSelection rs;
2577         TrackViewList empty;
2578         empty.clear();
2579         _editor->get_regions_after(rs, (framepos_t) 0, empty);
2580         std::list<RegionView*> views = rs.by_layer();
2581
2582         _stuck = false;
2583         for (list<RegionView*>::iterator i = views.begin(); i != views.end(); ++i) {
2584                 RegionView* rv = (*i);
2585                 if (!rv->region()->video_locked()) {
2586                         continue;
2587                 }
2588                 if (rv->region()->locked()) {
2589                         _stuck = true;
2590                 }
2591                 _views.push_back (AVDraggingView (rv));
2592         }
2593 }
2594
2595 void
2596 VideoTimeLineDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2597 {
2598         Drag::start_grab (event);
2599         if (_editor->session() == 0) {
2600                 return;
2601         }
2602
2603         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
2604                 _stuck = false;
2605                 _views.clear();
2606         }
2607
2608         if (_stuck) {
2609                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2610                 return;
2611         }
2612
2613         _startdrag_video_offset=ARDOUR_UI::instance()->video_timeline->get_offset();
2614         _max_backwards_drag = (
2615                           ARDOUR_UI::instance()->video_timeline->get_duration()
2616                         + ARDOUR_UI::instance()->video_timeline->get_offset()
2617                         - ceil(ARDOUR_UI::instance()->video_timeline->get_apv())
2618                         );
2619
2620         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2621                 if (i->initial_position < _max_backwards_drag || _max_backwards_drag < 0) {
2622                         _max_backwards_drag = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv (i->initial_position);
2623                 }
2624         }
2625         DEBUG_TRACE (DEBUG::Drags, string_compose("VideoTimeLineDrag: max backwards-drag: %1\n", _max_backwards_drag));
2626
2627         char buf[128];
2628         Timecode::Time timecode;
2629         _editor->session()->sample_to_timecode(abs(_startdrag_video_offset), timecode, true /* use_offset */, false /* use_subframes */ );
2630         snprintf (buf, sizeof (buf), "Video Start:\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, (_startdrag_video_offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
2631         show_verbose_cursor_text (buf);
2632 }
2633
2634 void
2635 VideoTimeLineDrag::motion (GdkEvent* event, bool first_move)
2636 {
2637         if (_editor->session() == 0) {
2638                 return;
2639         }
2640         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2641                 return;
2642         }
2643         if (_stuck) {
2644                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2645                 return;
2646         }
2647
2648         framecnt_t dt = adjusted_current_frame (event) - raw_grab_frame() + _pointer_frame_offset;
2649         dt = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(_startdrag_video_offset+dt) - _startdrag_video_offset;
2650
2651         if (_max_backwards_drag >= 0 && dt <= - _max_backwards_drag) {
2652                 dt = - _max_backwards_drag;
2653         }
2654
2655         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset+dt);
2656         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2657
2658         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2659                 RegionView* rv = i->view;
2660                 DEBUG_TRACE (DEBUG::Drags, string_compose("SHIFT REGION at %1 by %2\n", i->initial_position, dt));
2661                 if (first_move) {
2662                         rv->drag_start ();
2663                         rv->region()->clear_changes ();
2664                         rv->region()->suspend_property_changes();
2665                 }
2666                 rv->region()->set_position(i->initial_position + dt);
2667                 rv->region_changed(ARDOUR::Properties::position);
2668         }
2669
2670         const framepos_t offset = ARDOUR_UI::instance()->video_timeline->get_offset();
2671         Timecode::Time timecode;
2672         Timecode::Time timediff;
2673         char buf[128];
2674         _editor->session()->sample_to_timecode(abs(offset), timecode, true /* use_offset */, false /* use_subframes */ );
2675         _editor->session()->sample_to_timecode(abs(dt), timediff, false /* use_offset */, false /* use_subframes */ );
2676         snprintf (buf, sizeof (buf),
2677                         "%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2678                         "\n%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2679                         , _("Video Start:"),
2680                                 (offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames
2681                         , _("Diff:"),
2682                                 (dt<0?'-':' '), timediff.hours, timediff.minutes, timediff.seconds, timediff.frames
2683                                 );
2684         show_verbose_cursor_text (buf);
2685 }
2686
2687 void
2688 VideoTimeLineDrag::finished (GdkEvent * /*event*/, bool movement_occurred)
2689 {
2690         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2691                 return;
2692         }
2693         if (_stuck) {
2694                 return;
2695         }
2696
2697         if (!movement_occurred || ! _editor->session()) {
2698                 return;
2699         }
2700
2701         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2702
2703         _editor->begin_reversible_command (_("Move Video"));
2704
2705         XMLNode &before = ARDOUR_UI::instance()->video_timeline->get_state();
2706         ARDOUR_UI::instance()->video_timeline->save_undo();
2707         XMLNode &after = ARDOUR_UI::instance()->video_timeline->get_state();
2708         _editor->session()->add_command(new MementoCommand<VideoTimeLine>(*(ARDOUR_UI::instance()->video_timeline), &before, &after));
2709
2710         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2711                 i->view->drag_end();
2712                 i->view->region()->resume_property_changes ();
2713
2714                 _editor->session()->add_command (new StatefulDiffCommand (i->view->region()));
2715         }
2716
2717         _editor->session()->maybe_update_session_range(
2718                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset(), (ARDOUR::frameoffset_t) 0),
2719                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset() + ARDOUR_UI::instance()->video_timeline->get_duration(), (ARDOUR::frameoffset_t) 0)
2720                         );
2721
2722
2723         _editor->commit_reversible_command ();
2724 }
2725
2726 void
2727 VideoTimeLineDrag::aborted (bool)
2728 {
2729         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2730                 return;
2731         }
2732         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset);
2733         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2734
2735         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2736                 i->view->region()->resume_property_changes ();
2737                 i->view->region()->set_position(i->initial_position);
2738         }
2739 }
2740
2741 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool preserve_fade_anchor)
2742         : RegionDrag (e, i, p, v)
2743         , _operation (StartTrim)
2744         , _preserve_fade_anchor (preserve_fade_anchor)
2745         , _jump_position_when_done (false)
2746 {
2747         DEBUG_TRACE (DEBUG::Drags, "New TrimDrag\n");
2748 }
2749
2750 void
2751 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2752 {
2753         double speed = 1.0;
2754         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2755         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2756
2757         if (tv && tv->is_track()) {
2758                 speed = tv->track()->speed();
2759         }
2760
2761         framepos_t const region_start = (framepos_t) (_primary->region()->position() / speed);
2762         framepos_t const region_end = (framepos_t) (_primary->region()->last_frame() / speed);
2763         framecnt_t const region_length = (framecnt_t) (_primary->region()->length() / speed);
2764
2765         framepos_t const pf = adjusted_current_frame (event);
2766         setup_snap_delta (region_start);
2767
2768         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_contents_modifier ())) {
2769                 /* Move the contents of the region around without changing the region bounds */
2770                 _operation = ContentsTrim;
2771                 Drag::start_grab (event, _editor->cursors()->trimmer);
2772         } else {
2773                 /* These will get overridden for a point trim.*/
2774                 if (pf < (region_start + region_length/2)) {
2775                         /* closer to front */
2776                         _operation = StartTrim;
2777                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2778                                 Drag::start_grab (event, _editor->cursors()->anchored_left_side_trim);
2779                         } else {
2780                                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
2781                         }
2782                 } else {
2783                         /* closer to end */
2784                         _operation = EndTrim;
2785                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2786                                 Drag::start_grab (event, _editor->cursors()->anchored_right_side_trim);
2787                         } else {
2788                                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
2789                         }
2790                 }
2791         }
2792         /* jump trim disabled for now
2793         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::trim_jump_modifier ())) {
2794                 _jump_position_when_done = true;
2795         }
2796         */
2797
2798         switch (_operation) {
2799         case StartTrim:
2800                 show_verbose_cursor_time (region_start);
2801                 break;
2802         case EndTrim:
2803                 show_verbose_cursor_duration (region_start, region_end);
2804                 break;
2805         case ContentsTrim:
2806                 show_verbose_cursor_time (pf);
2807                 break;
2808         }
2809
2810         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2811                 i->view->region()->suspend_property_changes ();
2812         }
2813 }
2814
2815 void
2816 TrimDrag::motion (GdkEvent* event, bool first_move)
2817 {
2818         RegionView* rv = _primary;
2819
2820         double speed = 1.0;
2821         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2822         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2823         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
2824         frameoffset_t frame_delta = 0;
2825
2826         if (tv && tv->is_track()) {
2827                 speed = tv->track()->speed();
2828         }
2829         framecnt_t adj_frame = adjusted_frame (_drags->current_pointer_frame () + snap_delta (event->button.state), event, true);
2830         framecnt_t dt = adj_frame - raw_grab_frame () + _pointer_frame_offset - snap_delta (event->button.state);
2831
2832         if (first_move) {
2833
2834                 string trim_type;
2835
2836                 switch (_operation) {
2837                 case StartTrim:
2838                         trim_type = "Region start trim";
2839                         break;
2840                 case EndTrim:
2841                         trim_type = "Region end trim";
2842                         break;
2843                 case ContentsTrim:
2844                         trim_type = "Region content trim";
2845                         break;
2846                 default:
2847                         assert(0);
2848                         break;
2849                 }
2850
2851                 _editor->begin_reversible_command (trim_type);
2852
2853                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2854                         RegionView* rv = i->view;
2855                         rv->enable_display (false);
2856                         rv->region()->playlist()->clear_owned_changes ();
2857
2858                         if (_operation == StartTrim) {
2859                                 rv->trim_front_starting ();
2860                         }
2861
2862                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (rv);
2863
2864                         if (arv) {
2865                                 arv->temporarily_hide_envelope ();
2866                                 arv->drag_start ();
2867                         }
2868
2869                         boost::shared_ptr<Playlist> pl = rv->region()->playlist();
2870                         insert_result = _editor->motion_frozen_playlists.insert (pl);
2871
2872                         if (insert_result.second) {
2873                                 pl->freeze();
2874                         }
2875                 }
2876         }
2877
2878         bool non_overlap_trim = false;
2879
2880         if (event && Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::trim_overlap_modifier ())) {
2881                 non_overlap_trim = true;
2882         }
2883
2884         /* contstrain trim to fade length */
2885         if (_preserve_fade_anchor) {
2886                 switch (_operation) {
2887                         case StartTrim:
2888                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2889                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2890                                         if (!arv) continue;
2891                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2892                                         if (ar->locked()) continue;
2893                                         framecnt_t len = ar->fade_in()->back()->when;
2894                                         if (len < dt) dt = min(dt, len);
2895                                 }
2896                                 break;
2897                         case EndTrim:
2898                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2899                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2900                                         if (!arv) continue;
2901                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2902                                         if (ar->locked()) continue;
2903                                         framecnt_t len = ar->fade_out()->back()->when;
2904                                         if (len < -dt) dt = max(dt, -len);
2905                                 }
2906                                 break;
2907                         case ContentsTrim:
2908                                 break;
2909                 }
2910         }
2911
2912
2913         switch (_operation) {
2914         case StartTrim:
2915                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2916                         bool changed = i->view->trim_front (i->initial_position + dt, non_overlap_trim);
2917                         if (changed && _preserve_fade_anchor) {
2918                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2919                                 if (arv) {
2920                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2921                                         framecnt_t len = ar->fade_in()->back()->when;
2922                                         framecnt_t diff = ar->first_frame() - i->initial_position;
2923                                         framepos_t new_length = len - diff;
2924                                         i->anchored_fade_length = min (ar->length(), new_length);
2925                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, true  /*START*/ );
2926                                         arv->reset_fade_in_shape_width (ar, i->anchored_fade_length, true);
2927                                 }
2928                         }
2929                 }
2930                 break;
2931
2932         case EndTrim:
2933                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2934                         bool changed = i->view->trim_end (i->initial_end + dt, non_overlap_trim);
2935                         if (changed && _preserve_fade_anchor) {
2936                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2937                                 if (arv) {
2938                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2939                                         framecnt_t len = ar->fade_out()->back()->when;
2940                                         framecnt_t diff = 1 + ar->last_frame() - i->initial_end;
2941                                         framepos_t new_length = len + diff;
2942                                         i->anchored_fade_length = min (ar->length(), new_length);
2943                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, false  /*END*/ );
2944                                         arv->reset_fade_out_shape_width (ar, i->anchored_fade_length, true);
2945                                 }
2946                         }
2947                 }
2948                 break;
2949
2950         case ContentsTrim:
2951                 {
2952                         frame_delta = (last_pointer_frame() - adjusted_current_frame(event));
2953
2954                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2955                                 i->view->move_contents (frame_delta);
2956                         }
2957                 }
2958                 break;
2959         }
2960
2961         switch (_operation) {
2962         case StartTrim:
2963                 show_verbose_cursor_time ((framepos_t) (rv->region()->position() / speed));
2964                 break;
2965         case EndTrim:
2966                 show_verbose_cursor_duration ((framepos_t)  rv->region()->position() / speed, (framepos_t) rv->region()->last_frame() / speed);
2967                 break;
2968         case ContentsTrim:
2969                 // show_verbose_cursor_time (frame_delta);
2970                 break;
2971         }
2972 }
2973
2974 void
2975 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
2976 {
2977         if (movement_occurred) {
2978                 motion (event, false);
2979
2980                 if (_operation == StartTrim) {
2981                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2982                                 {
2983                                         /* This must happen before the region's StatefulDiffCommand is created, as it may
2984                                            `correct' (ahem) the region's _start from being negative to being zero.  It
2985                                            needs to be zero in the undo record.
2986                                         */
2987                                         i->view->trim_front_ending ();
2988                                 }
2989                                 if (_preserve_fade_anchor) {
2990                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2991                                         if (arv) {
2992                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2993                                                 arv->reset_fade_in_shape_width (ar, i->anchored_fade_length);
2994                                                 ar->set_fade_in_length(i->anchored_fade_length);
2995                                                 ar->set_fade_in_active(true);
2996                                         }
2997                                 }
2998                                 if (_jump_position_when_done) {
2999                                         i->view->region()->set_position (i->initial_position);
3000                                 }
3001                         }
3002                 } else if (_operation == EndTrim) {
3003                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3004                                 if (_preserve_fade_anchor) {
3005                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
3006                                         if (arv) {
3007                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
3008                                                 arv->reset_fade_out_shape_width (ar, i->anchored_fade_length);
3009                                                 ar->set_fade_out_length(i->anchored_fade_length);
3010                                                 ar->set_fade_out_active(true);
3011                                         }
3012                                 }
3013                                 if (_jump_position_when_done) {
3014                                         i->view->region()->set_position (i->initial_end - i->view->region()->length());
3015                                 }
3016                         }
3017                 }
3018
3019                 if (!_views.empty()) {
3020                         if (_operation == StartTrim) {
3021                                 _editor->maybe_locate_with_edit_preroll(
3022                                         _views.begin()->view->region()->position());
3023                         }
3024                         if (_operation == EndTrim) {
3025                                 _editor->maybe_locate_with_edit_preroll(
3026                                         _views.begin()->view->region()->position() +
3027                                         _views.begin()->view->region()->length());
3028                         }
3029                 }
3030
3031                 if (!_editor->selection->selected (_primary)) {
3032                         _primary->thaw_after_trim ();
3033                 } else {
3034
3035                         set<boost::shared_ptr<Playlist> > diffed_playlists;
3036
3037                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3038                                 i->view->thaw_after_trim ();
3039                                 i->view->enable_display (true);
3040
3041                                 /* Trimming one region may affect others on the playlist, so we need
3042                                    to get undo Commands from the whole playlist rather than just the
3043                                    region.  Use diffed_playlists to make sure we don't diff a given
3044                                    playlist more than once.
3045                                 */
3046                                 boost::shared_ptr<Playlist> p = i->view->region()->playlist ();
3047                                 if (diffed_playlists.find (p) == diffed_playlists.end()) {
3048                                         vector<Command*> cmds;
3049                                         p->rdiff (cmds);
3050                                         _editor->session()->add_commands (cmds);
3051                                         diffed_playlists.insert (p);
3052                                 }
3053                         }
3054                 }
3055
3056                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
3057                         (*p)->thaw ();
3058                 }
3059
3060                 _editor->motion_frozen_playlists.clear ();
3061                 _editor->commit_reversible_command();
3062
3063         } else {
3064                 /* no mouse movement */
3065                 if (adjusted_current_frame (event) != adjusted_frame (_drags->current_pointer_frame(), event, false)) {
3066                         _editor->point_trim (event, adjusted_current_frame (event));
3067                 }
3068         }
3069
3070         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3071                 i->view->region()->resume_property_changes ();
3072         }
3073 }
3074
3075 void
3076 TrimDrag::aborted (bool movement_occurred)
3077 {
3078         /* Our motion method is changing model state, so use the Undo system
3079            to cancel.  Perhaps not ideal, as this will leave an Undo point
3080            behind which may be slightly odd from the user's point of view.
3081         */
3082
3083         finished (0, true);
3084
3085         if (movement_occurred) {
3086                 _editor->undo ();
3087         }
3088
3089         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3090                 i->view->region()->resume_property_changes ();
3091         }
3092 }
3093
3094 void
3095 TrimDrag::setup_pointer_frame_offset ()
3096 {
3097         list<DraggingView>::iterator i = _views.begin ();
3098         while (i != _views.end() && i->view != _primary) {
3099                 ++i;
3100         }
3101
3102         if (i == _views.end()) {
3103                 return;
3104         }
3105
3106         switch (_operation) {
3107         case StartTrim:
3108                 _pointer_frame_offset = raw_grab_frame() - i->initial_position;
3109                 break;
3110         case EndTrim:
3111                 _pointer_frame_offset = raw_grab_frame() - i->initial_end;
3112                 break;
3113         case ContentsTrim:
3114                 break;
3115         }
3116 }
3117
3118 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3119         : Drag (e, i),
3120           _copy (c)
3121         , before_state (0)
3122 {
3123         DEBUG_TRACE (DEBUG::Drags, "New MeterMarkerDrag\n");
3124         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
3125         assert (_marker);
3126 }
3127
3128 void
3129 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3130 {
3131         Drag::start_grab (event, cursor);
3132         show_verbose_cursor_time (adjusted_current_frame(event));
3133 }
3134
3135 void
3136 MeterMarkerDrag::setup_pointer_frame_offset ()
3137 {
3138         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3139 }
3140
3141 void
3142 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3143 {
3144         if (!_marker->meter().movable()) {
3145                 return;
3146         }
3147
3148         if (first_move) {
3149
3150                 // create a dummy marker for visual representation of moving the
3151                 // section, because whether its a copy or not, we're going to
3152                 // leave or lose the original marker (leave if its a copy; lose if its
3153                 // not, because we'll remove it from the map).
3154
3155                 MeterSection section (_marker->meter());
3156
3157                 if (!section.movable()) {
3158                         return;
3159                 }
3160
3161                 char name[64];
3162                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3163
3164                 _marker = new MeterMarker (
3165                         *_editor,
3166                         *_editor->meter_group,
3167                         UIConfiguration::instance().color ("meter marker"),
3168                         name,
3169                         *new MeterSection (_marker->meter())
3170                 );
3171
3172                 /* use the new marker for the grab */
3173                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3174
3175                 if (!_copy) {
3176                         TempoMap& map (_editor->session()->tempo_map());
3177                         /* get current state */
3178                         before_state = &map.get_state();
3179                         /* remove the section while we drag it */
3180                         map.remove_meter (section, true);
3181                 }
3182         }
3183
3184         framepos_t const pf = adjusted_current_frame (event);
3185
3186         _marker->set_position (pf);
3187         show_verbose_cursor_time (pf);
3188 }
3189
3190 void
3191 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3192 {
3193         if (!movement_occurred) {
3194                 if (was_double_click()) {
3195                         _editor->edit_meter_marker (*_marker);
3196                 }
3197                 return;
3198         }
3199
3200         if (!_marker->meter().movable()) {
3201                 return;
3202         }
3203
3204         motion (event, false);
3205
3206         Timecode::BBT_Time when;
3207
3208         TempoMap& map (_editor->session()->tempo_map());
3209         map.bbt_time (_marker->position(), when);
3210
3211         if (_copy == true) {
3212                 _editor->begin_reversible_command (_("copy meter mark"));
3213                 XMLNode &before = map.get_state();
3214                 map.add_meter (_marker->meter(), when);
3215                 XMLNode &after = map.get_state();
3216                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
3217                 _editor->commit_reversible_command ();
3218
3219         } else {
3220                 _editor->begin_reversible_command (_("move meter mark"));
3221
3222                 /* we removed it before, so add it back now */
3223
3224                 map.add_meter (_marker->meter(), when);
3225                 XMLNode &after = map.get_state();
3226                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3227                 _editor->commit_reversible_command ();
3228         }
3229
3230         // delete the dummy marker we used for visual representation while moving.
3231         // a new visual marker will show up automatically.
3232         delete _marker;
3233 }
3234
3235 void
3236 MeterMarkerDrag::aborted (bool moved)
3237 {
3238         _marker->set_position (_marker->meter().frame ());
3239
3240         if (moved) {
3241                 TempoMap& map (_editor->session()->tempo_map());
3242                 /* we removed it before, so add it back now */
3243                 map.add_meter (_marker->meter(), _marker->meter().frame());
3244                 // delete the dummy marker we used for visual representation while moving.
3245                 // a new visual marker will show up automatically.
3246                 delete _marker;
3247         }
3248 }
3249
3250 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3251         : Drag (e, i)
3252         , _copy (c)
3253         , before_state (0)
3254 {
3255         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3256
3257         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3258         assert (_marker);
3259 }
3260
3261 void
3262 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3263 {
3264         Drag::start_grab (event, cursor);
3265         show_verbose_cursor_time (adjusted_current_frame (event));
3266 }
3267
3268 void
3269 TempoMarkerDrag::setup_pointer_frame_offset ()
3270 {
3271         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3272 }
3273
3274 void
3275 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3276 {
3277         if (!_marker->tempo().movable()) {
3278                 return;
3279         }
3280
3281         if (first_move) {
3282
3283                 // create a dummy marker for visual representation of moving the
3284                 // section, because whether its a copy or not, we're going to
3285                 // leave or lose the original marker (leave if its a copy; lose if its
3286                 // not, because we'll remove it from the map).
3287
3288                 // create a dummy marker for visual representation of moving the copy.
3289                 // The actual copying is not done before we reach the finish callback.
3290
3291                 char name[64];
3292                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3293
3294                 TempoSection section (_marker->tempo());
3295
3296                 _marker = new TempoMarker (
3297                         *_editor,
3298                         *_editor->tempo_group,
3299                         UIConfiguration::instance().color ("tempo marker"),
3300                         name,
3301                         *new TempoSection (_marker->tempo())
3302                         );
3303
3304                 /* use the new marker for the grab */
3305                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3306
3307                 if (!_copy) {
3308                         _editor->begin_reversible_command (_("move tempo mark"));
3309                         TempoMap& map (_editor->session()->tempo_map());
3310                         /* get current state */
3311                         before_state = &map.get_state();
3312                         /* remove the section while we drag it */
3313                         map.remove_tempo (section, true);
3314                 }
3315         }
3316
3317         framepos_t const pf = adjusted_current_frame (event);
3318         _marker->set_position (pf);
3319         show_verbose_cursor_time (pf);
3320 }
3321
3322 void
3323 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3324 {
3325         if (!movement_occurred) {
3326                 if (was_double_click()) {
3327                         _editor->edit_tempo_marker (*_marker);
3328                 }
3329                 return;
3330         }
3331
3332         if (!_marker->tempo().movable()) {
3333                 return;
3334         }
3335
3336         motion (event, false);
3337
3338         TempoMap& map (_editor->session()->tempo_map());
3339         framepos_t beat_time = map.round_to_beat (_marker->position(), RoundNearest);
3340         Timecode::BBT_Time when;
3341
3342         map.bbt_time (beat_time, when);
3343
3344         if (_copy == true) {
3345                 _editor->begin_reversible_command (_("copy tempo mark"));
3346                 XMLNode &before = map.get_state();
3347                 map.add_tempo (_marker->tempo(), when);
3348                 XMLNode &after = map.get_state();
3349                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3350                 _editor->commit_reversible_command ();
3351
3352         } else {
3353                 /* we removed it before, so add it back now */
3354                 map.add_tempo (_marker->tempo(), when);
3355                 XMLNode &after = map.get_state();
3356                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3357                 _editor->commit_reversible_command ();
3358         }
3359
3360         // delete the dummy marker we used for visual representation while moving.
3361         // a new visual marker will show up automatically.
3362         delete _marker;
3363 }
3364
3365 void
3366 TempoMarkerDrag::aborted (bool moved)
3367 {
3368         _marker->set_position (_marker->tempo().frame());
3369         if (moved) {
3370                 TempoMap& map (_editor->session()->tempo_map());
3371                 /* we removed it before, so add it back now */
3372                 map.add_tempo (_marker->tempo(), _marker->tempo().start());
3373                 // delete the dummy marker we used for visual representation while moving.
3374                 // a new visual marker will show up automatically.
3375                 delete _marker;
3376         }
3377 }
3378
3379 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3380         : Drag (e, &c.track_canvas_item(), false)
3381         , _cursor (c)
3382         , _stop (s)
3383         , _grab_zoom (0.0)
3384 {
3385         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3386 }
3387
3388 /** Do all the things we do when dragging the playhead to make it look as though
3389  *  we have located, without actually doing the locate (because that would cause
3390  *  the diskstream buffers to be refilled, which is too slow).
3391  */
3392 void
3393 CursorDrag::fake_locate (framepos_t t)
3394 {
3395         if (_editor->session () == 0) {
3396                 return;
3397         }
3398
3399         _editor->playhead_cursor->set_position (t);
3400
3401         Session* s = _editor->session ();
3402         if (s->timecode_transmission_suspended ()) {
3403                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3404                 /* This is asynchronous so it will be sent "now"
3405                  */
3406                 s->send_mmc_locate (f);
3407                 /* These are synchronous and will be sent during the next
3408                    process cycle
3409                 */
3410                 s->queue_full_time_code ();
3411                 s->queue_song_position_pointer ();
3412         }
3413
3414         show_verbose_cursor_time (t);
3415         _editor->UpdateAllTransportClocks (t);
3416 }
3417
3418 void
3419 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3420 {
3421         Drag::start_grab (event, c);
3422         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3423
3424         _grab_zoom = _editor->samples_per_pixel;
3425
3426         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3427
3428         _editor->snap_to_with_modifier (where, event);
3429
3430         _editor->_dragging_playhead = true;
3431
3432         Session* s = _editor->session ();
3433
3434         /* grab the track canvas item as well */
3435
3436         _cursor.track_canvas_item().grab();
3437
3438         if (s) {
3439                 if (_was_rolling && _stop) {
3440                         s->request_stop ();
3441                 }
3442
3443                 if (s->is_auditioning()) {
3444                         s->cancel_audition ();
3445                 }
3446
3447
3448                 if (AudioEngine::instance()->connected()) {
3449
3450                         /* do this only if we're the engine is connected
3451                          * because otherwise this request will never be
3452                          * serviced and we'll busy wait forever. likewise,
3453                          * notice if we are disconnected while waiting for the
3454                          * request to be serviced.
3455                          */
3456
3457                         s->request_suspend_timecode_transmission ();
3458                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3459                                 /* twiddle our thumbs */
3460                         }
3461                 }
3462         }
3463
3464         fake_locate (where - snap_delta (event->button.state));
3465 }
3466
3467 void
3468 CursorDrag::motion (GdkEvent* event, bool)
3469 {
3470         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3471         _editor->snap_to_with_modifier (where, event);
3472         if (where != last_pointer_frame()) {
3473                 fake_locate (where - snap_delta (event->button.state));
3474         }
3475 }
3476
3477 void
3478 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3479 {
3480         _editor->_dragging_playhead = false;
3481
3482         _cursor.track_canvas_item().ungrab();
3483
3484         if (!movement_occurred && _stop) {
3485                 return;
3486         }
3487
3488         motion (event, false);
3489
3490         Session* s = _editor->session ();
3491         if (s) {
3492                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3493                 _editor->_pending_locate_request = true;
3494                 s->request_resume_timecode_transmission ();
3495         }
3496 }
3497
3498 void
3499 CursorDrag::aborted (bool)
3500 {
3501         _cursor.track_canvas_item().ungrab();
3502
3503         if (_editor->_dragging_playhead) {
3504                 _editor->session()->request_resume_timecode_transmission ();
3505                 _editor->_dragging_playhead = false;
3506         }
3507
3508         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3509 }
3510
3511 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3512         : RegionDrag (e, i, p, v)
3513 {
3514         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3515 }
3516
3517 void
3518 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3519 {
3520         Drag::start_grab (event, cursor);
3521
3522         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3523         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3524         setup_snap_delta (r->position ());
3525
3526         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3527 }
3528
3529 void
3530 FadeInDrag::setup_pointer_frame_offset ()
3531 {
3532         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3533         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3534         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3535 }
3536
3537 void
3538 FadeInDrag::motion (GdkEvent* event, bool)
3539 {
3540         framecnt_t fade_length;
3541
3542         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3543         _editor->snap_to_with_modifier (pos, event);
3544         pos -= snap_delta (event->button.state);
3545
3546         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3547
3548         if (pos < (region->position() + 64)) {
3549                 fade_length = 64; // this should be a minimum defined somewhere
3550         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3551                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3552         } else {
3553                 fade_length = pos - region->position();
3554         }
3555
3556         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3557
3558                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3559
3560                 if (!tmp) {
3561                         continue;
3562                 }
3563
3564                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3565         }
3566
3567         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3568 }
3569
3570 void
3571 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3572 {
3573         if (!movement_occurred) {
3574                 return;
3575         }
3576
3577         framecnt_t fade_length;
3578         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3579         _editor->snap_to_with_modifier (pos, event);
3580         pos -= snap_delta (event->button.state);
3581
3582         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3583
3584         if (pos < (region->position() + 64)) {
3585                 fade_length = 64; // this should be a minimum defined somewhere
3586         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3587                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3588         } else {
3589                 fade_length = pos - region->position();
3590         }
3591
3592         bool in_command = false;
3593
3594         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3595
3596                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3597
3598                 if (!tmp) {
3599                         continue;
3600                 }
3601
3602                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3603                 XMLNode &before = alist->get_state();
3604
3605                 tmp->audio_region()->set_fade_in_length (fade_length);
3606                 tmp->audio_region()->set_fade_in_active (true);
3607
3608                 if (!in_command) {
3609                         _editor->begin_reversible_command (_("change fade in length"));
3610                         in_command = true;
3611                 }
3612                 XMLNode &after = alist->get_state();
3613                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3614         }
3615
3616         if (in_command) {
3617                 _editor->commit_reversible_command ();
3618         }
3619 }
3620
3621 void
3622 FadeInDrag::aborted (bool)
3623 {
3624         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3625                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3626
3627                 if (!tmp) {
3628                         continue;
3629                 }
3630
3631                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3632         }
3633 }
3634
3635 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3636         : RegionDrag (e, i, p, v)
3637 {
3638         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3639 }
3640
3641 void
3642 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3643 {
3644         Drag::start_grab (event, cursor);
3645
3646         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3647         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3648         setup_snap_delta (r->last_frame ());
3649
3650         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3651 }
3652
3653 void
3654 FadeOutDrag::setup_pointer_frame_offset ()
3655 {
3656         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3657         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3658         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3659 }
3660
3661 void
3662 FadeOutDrag::motion (GdkEvent* event, bool)
3663 {
3664         framecnt_t fade_length;
3665
3666         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3667         _editor->snap_to_with_modifier (pos, event);
3668         pos -= snap_delta (event->button.state);
3669
3670         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3671
3672         if (pos > (region->last_frame() - 64)) {
3673                 fade_length = 64; // this should really be a minimum fade defined somewhere
3674         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3675                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3676         } else {
3677                 fade_length = region->last_frame() - pos;
3678         }
3679
3680         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3681
3682                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3683
3684                 if (!tmp) {
3685                         continue;
3686                 }
3687
3688                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3689         }
3690
3691         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3692 }
3693
3694 void
3695 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3696 {
3697         if (!movement_occurred) {
3698                 return;
3699         }
3700
3701         framecnt_t fade_length;
3702
3703         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3704         _editor->snap_to_with_modifier (pos, event);
3705         pos -= snap_delta (event->button.state);
3706
3707         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3708
3709         if (pos > (region->last_frame() - 64)) {
3710                 fade_length = 64; // this should really be a minimum fade defined somewhere
3711         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3712                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3713         } else {
3714                 fade_length = region->last_frame() - pos;
3715         }
3716
3717         bool in_command = false;
3718
3719         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3720
3721                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3722
3723                 if (!tmp) {
3724                         continue;
3725                 }
3726
3727                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3728                 XMLNode &before = alist->get_state();
3729
3730                 tmp->audio_region()->set_fade_out_length (fade_length);
3731                 tmp->audio_region()->set_fade_out_active (true);
3732
3733                 if (!in_command) {
3734                         _editor->begin_reversible_command (_("change fade out length"));
3735                         in_command = true;
3736                 }
3737                 XMLNode &after = alist->get_state();
3738                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3739         }
3740
3741         if (in_command) {
3742                 _editor->commit_reversible_command ();
3743         }
3744 }
3745
3746 void
3747 FadeOutDrag::aborted (bool)
3748 {
3749         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3750                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3751
3752                 if (!tmp) {
3753                         continue;
3754                 }
3755
3756                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3757         }
3758 }
3759
3760 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3761         : Drag (e, i)
3762         , _selection_changed (false)
3763 {
3764         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3765
3766         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3767         assert (_marker);
3768
3769         _points.push_back (ArdourCanvas::Duple (0, 0));
3770         _points.push_back (ArdourCanvas::Duple (0, physical_screen_height (_editor->get_window())));
3771 }
3772
3773 MarkerDrag::~MarkerDrag ()
3774 {
3775         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3776                 delete i->location;
3777         }
3778 }
3779
3780 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3781 {
3782         location = new Location (*l);
3783         markers.push_back (m);
3784         move_both = false;
3785 }
3786
3787 void
3788 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3789 {
3790         Drag::start_grab (event, cursor);
3791
3792         bool is_start;
3793
3794         Location *location = _editor->find_location_from_marker (_marker, is_start);
3795         _editor->_dragging_edit_point = true;
3796
3797         update_item (location);
3798
3799         // _drag_line->show();
3800         // _line->raise_to_top();
3801
3802         if (is_start) {
3803                 show_verbose_cursor_time (location->start());
3804         } else {
3805                 show_verbose_cursor_time (location->end());
3806         }
3807         setup_snap_delta (is_start ? location->start() : location->end());
3808
3809         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3810
3811         switch (op) {
3812         case Selection::Toggle:
3813                 /* we toggle on the button release */
3814                 break;
3815         case Selection::Set:
3816                 if (!_editor->selection->selected (_marker)) {
3817                         _editor->selection->set (_marker);
3818                         _selection_changed = true;
3819                 }
3820                 break;
3821         case Selection::Extend:
3822         {
3823                 Locations::LocationList ll;
3824                 list<ArdourMarker*> to_add;
3825                 framepos_t s, e;
3826                 _editor->selection->markers.range (s, e);
3827                 s = min (_marker->position(), s);
3828                 e = max (_marker->position(), e);
3829                 s = min (s, e);
3830                 e = max (s, e);
3831                 if (e < max_framepos) {
3832                         ++e;
3833                 }
3834                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3835                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3836                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3837                         if (lm) {
3838                                 if (lm->start) {
3839                                         to_add.push_back (lm->start);
3840                                 }
3841                                 if (lm->end) {
3842                                         to_add.push_back (lm->end);
3843                                 }
3844                         }
3845                 }
3846                 if (!to_add.empty()) {
3847                         _editor->selection->add (to_add);
3848                         _selection_changed = true;
3849                 }
3850                 break;
3851         }
3852         case Selection::Add:
3853                 _editor->selection->add (_marker);
3854                 _selection_changed = true;
3855
3856                 break;
3857         }
3858
3859         /* Set up copies for us to manipulate during the drag
3860          */
3861
3862         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3863
3864                 Location* l = _editor->find_location_from_marker (*i, is_start);
3865
3866                 if (!l) {
3867                         continue;
3868                 }
3869
3870                 if (l->is_mark()) {
3871                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3872                 } else {
3873                         /* range: check that the other end of the range isn't
3874                            already there.
3875                         */
3876                         CopiedLocationInfo::iterator x;
3877                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3878                                 if (*(*x).location == *l) {
3879                                         break;
3880                                 }
3881                         }
3882                         if (x == _copied_locations.end()) {
3883                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3884                         } else {
3885                                 (*x).markers.push_back (*i);
3886                                 (*x).move_both = true;
3887                         }
3888                 }
3889
3890         }
3891 }
3892
3893 void
3894 MarkerDrag::setup_pointer_frame_offset ()
3895 {
3896         bool is_start;
3897         Location *location = _editor->find_location_from_marker (_marker, is_start);
3898         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3899 }
3900
3901 void
3902 MarkerDrag::motion (GdkEvent* event, bool)
3903 {
3904         framecnt_t f_delta = 0;
3905         bool is_start;
3906         bool move_both = false;
3907         Location *real_location;
3908         Location *copy_location = 0;
3909         framecnt_t const sd = snap_delta (event->button.state);
3910
3911         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3912         framepos_t next = newframe;
3913
3914         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3915                 move_both = true;
3916         }
3917
3918         CopiedLocationInfo::iterator x;
3919
3920         /* find the marker we're dragging, and compute the delta */
3921
3922         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3923
3924                 copy_location = (*x).location;
3925
3926                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3927
3928                         /* this marker is represented by this
3929                          * CopiedLocationMarkerInfo
3930                          */
3931
3932                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3933                                 /* que pasa ?? */
3934                                 return;
3935                         }
3936
3937                         if (real_location->is_mark()) {
3938                                 f_delta = newframe - copy_location->start();
3939                         } else {
3940
3941
3942                                 switch (_marker->type()) {
3943                                 case ArdourMarker::SessionStart:
3944                                 case ArdourMarker::RangeStart:
3945                                 case ArdourMarker::LoopStart:
3946                                 case ArdourMarker::PunchIn:
3947                                         f_delta = newframe - copy_location->start();
3948                                         break;
3949
3950                                 case ArdourMarker::SessionEnd:
3951                                 case ArdourMarker::RangeEnd:
3952                                 case ArdourMarker::LoopEnd:
3953                                 case ArdourMarker::PunchOut:
3954                                         f_delta = newframe - copy_location->end();
3955                                         break;
3956                                 default:
3957                                         /* what kind of marker is this ? */
3958                                         return;
3959                                 }
3960                         }
3961
3962                         break;
3963                 }
3964         }
3965
3966         if (x == _copied_locations.end()) {
3967                 /* hmm, impossible - we didn't find the dragged marker */
3968                 return;
3969         }
3970
3971         /* now move them all */
3972
3973         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3974
3975                 copy_location = x->location;
3976
3977                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
3978                         continue;
3979                 }
3980
3981                 if (real_location->locked()) {
3982                         continue;
3983                 }
3984
3985                 if (copy_location->is_mark()) {
3986
3987                         /* now move it */
3988
3989                         copy_location->set_start (copy_location->start() + f_delta);
3990
3991                 } else {
3992
3993                         framepos_t new_start = copy_location->start() + f_delta;
3994                         framepos_t new_end = copy_location->end() + f_delta;
3995
3996                         if (is_start) { // start-of-range marker
3997
3998                                 if (move_both || (*x).move_both) {
3999                                         copy_location->set_start (new_start);
4000                                         copy_location->set_end (new_end);
4001                                 } else  if (new_start < copy_location->end()) {
4002                                         copy_location->set_start (new_start);
4003                                 } else if (newframe > 0) {
4004                                         //_editor->snap_to (next, RoundUpAlways, true);
4005                                         copy_location->set_end (next);
4006                                         copy_location->set_start (newframe);
4007                                 }
4008
4009                         } else { // end marker
4010
4011                                 if (move_both || (*x).move_both) {
4012                                         copy_location->set_end (new_end);
4013                                         copy_location->set_start (new_start);
4014                                 } else if (new_end > copy_location->start()) {
4015                                         copy_location->set_end (new_end);
4016                                 } else if (newframe > 0) {
4017                                         //_editor->snap_to (next, RoundDownAlways, true);
4018                                         copy_location->set_start (next);
4019                                         copy_location->set_end (newframe);
4020                                 }
4021                         }
4022                 }
4023
4024                 update_item (copy_location);
4025
4026                 /* now lookup the actual GUI items used to display this
4027                  * location and move them to wherever the copy of the location
4028                  * is now. This means that the logic in ARDOUR::Location is
4029                  * still enforced, even though we are not (yet) modifying
4030                  * the real Location itself.
4031                  */
4032
4033                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4034
4035                 if (lm) {
4036                         lm->set_position (copy_location->start(), copy_location->end());
4037                 }
4038
4039         }
4040
4041         assert (!_copied_locations.empty());
4042
4043         show_verbose_cursor_time (newframe);
4044 }
4045
4046 void
4047 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4048 {
4049         if (!movement_occurred) {
4050
4051                 if (was_double_click()) {
4052                         _editor->rename_marker (_marker);
4053                         return;
4054                 }
4055
4056                 /* just a click, do nothing but finish
4057                    off the selection process
4058                 */
4059
4060                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4061                 switch (op) {
4062                 case Selection::Set:
4063                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4064                                 _editor->selection->set (_marker);
4065                                 _selection_changed = true;
4066                         }
4067                         break;
4068
4069                 case Selection::Toggle:
4070                         /* we toggle on the button release, click only */
4071                         _editor->selection->toggle (_marker);
4072                         _selection_changed = true;
4073
4074                         break;
4075
4076                 case Selection::Extend:
4077                 case Selection::Add:
4078                         break;
4079                 }
4080
4081                 if (_selection_changed) {
4082                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4083                         _editor->commit_reversible_selection_op();
4084                 }
4085
4086                 return;
4087         }
4088
4089         _editor->_dragging_edit_point = false;
4090
4091         XMLNode &before = _editor->session()->locations()->get_state();
4092         bool in_command = false;
4093
4094         MarkerSelection::iterator i;
4095         CopiedLocationInfo::iterator x;
4096         bool is_start;
4097
4098         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4099              x != _copied_locations.end() && i != _editor->selection->markers.end();
4100              ++i, ++x) {
4101
4102                 Location * location = _editor->find_location_from_marker (*i, is_start);
4103
4104                 if (location) {
4105
4106                         if (location->locked()) {
4107                                 continue;
4108                         }
4109                         if (!in_command) {
4110                                 _editor->begin_reversible_command ( _("move marker") );
4111                                 in_command = true;
4112                         }
4113                         if (location->is_mark()) {
4114                                 location->set_start (((*x).location)->start());
4115                         } else {
4116                                 location->set (((*x).location)->start(), ((*x).location)->end());
4117                         }
4118                 }
4119         }
4120
4121         if (in_command) {
4122                 XMLNode &after = _editor->session()->locations()->get_state();
4123                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4124                 _editor->commit_reversible_command ();
4125         }
4126 }
4127
4128 void
4129 MarkerDrag::aborted (bool movement_occured)
4130 {
4131         if (!movement_occured) {
4132                 return;
4133         }
4134
4135         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4136
4137                 /* move all markers to their original location */
4138
4139
4140                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4141
4142                         bool is_start;
4143                         Location * location = _editor->find_location_from_marker (*m, is_start);
4144
4145                         if (location) {
4146                                 (*m)->set_position (is_start ? location->start() : location->end());
4147                         }
4148                 }
4149         }
4150 }
4151
4152 void
4153 MarkerDrag::update_item (Location*)
4154 {
4155         /* noop */
4156 }
4157
4158 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4159         : Drag (e, i)
4160         , _fixed_grab_x (0.0)
4161         , _fixed_grab_y (0.0)
4162         , _cumulative_x_drag (0.0)
4163         , _cumulative_y_drag (0.0)
4164         , _pushing (false)
4165         , _final_index (0)
4166 {
4167         if (_zero_gain_fraction < 0.0) {
4168                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4169         }
4170
4171         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4172
4173         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4174         assert (_point);
4175 }
4176
4177
4178 void
4179 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4180 {
4181         Drag::start_grab (event, _editor->cursors()->fader);
4182
4183         // start the grab at the center of the control point so
4184         // the point doesn't 'jump' to the mouse after the first drag
4185         _fixed_grab_x = _point->get_x();
4186         _fixed_grab_y = _point->get_y();
4187
4188         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4189         setup_snap_delta (pos);
4190
4191         float const fraction = 1 - (_point->get_y() / _point->line().height());
4192         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4193
4194         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4195
4196         if (!_point->can_slide ()) {
4197                 _x_constrained = true;
4198         }
4199 }
4200
4201 void
4202 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4203 {
4204         double dx = _drags->current_pointer_x() - last_pointer_x();
4205         double dy = current_pointer_y() - last_pointer_y();
4206         bool need_snap = true;
4207
4208         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4209                 dx *= 0.1;
4210                 dy *= 0.1;
4211                 need_snap = false;
4212         }
4213
4214         /* coordinate in pixels relative to the start of the region (for region-based automation)
4215            or track (for track-based automation) */
4216         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4217         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4218
4219         // calculate zero crossing point. back off by .01 to stay on the
4220         // positive side of zero
4221         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4222
4223         if (_x_constrained) {
4224                 cx = _fixed_grab_x;
4225         }
4226         if (_y_constrained) {
4227                 cy = _fixed_grab_y;
4228         }
4229
4230         _cumulative_x_drag = cx - _fixed_grab_x;
4231         _cumulative_y_drag = cy - _fixed_grab_y;
4232
4233         cx = max (0.0, cx);
4234         cy = max (0.0, cy);
4235         cy = min ((double) _point->line().height(), cy);
4236
4237         // make sure we hit zero when passing through
4238         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4239                 cy = zero_gain_y;
4240         }
4241
4242         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4243
4244         if (!_x_constrained && need_snap) {
4245                 _editor->snap_to_with_modifier (cx_frames, event);
4246         }
4247
4248         cx_frames -= snap_delta (event->button.state);
4249         cx_frames = min (cx_frames, _point->line().maximum_time());
4250
4251         float const fraction = 1.0 - (cy / _point->line().height());
4252
4253         if (first_motion) {
4254                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4255                 _editor->begin_reversible_command (_("automation event move"));
4256                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4257         }
4258         pair<double, float> result;
4259         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4260
4261         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4262 }
4263
4264 void
4265 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4266 {
4267         if (!movement_occurred) {
4268
4269                 /* just a click */
4270                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4271                         _editor->reset_point_selection ();
4272                 }
4273
4274         } else {
4275                 _point->line().end_drag (_pushing, _final_index);
4276                 _editor->commit_reversible_command ();
4277         }
4278 }
4279
4280 void
4281 ControlPointDrag::aborted (bool)
4282 {
4283         _point->line().reset ();
4284 }
4285
4286 bool
4287 ControlPointDrag::active (Editing::MouseMode m)
4288 {
4289         if (m == Editing::MouseDraw) {
4290                 /* always active in mouse draw */
4291                 return true;
4292         }
4293
4294         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4295         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4296 }
4297
4298 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4299         : Drag (e, i)
4300         , _line (0)
4301         , _fixed_grab_x (0.0)
4302         , _fixed_grab_y (0.0)
4303         , _cumulative_y_drag (0)
4304         , _before (0)
4305         , _after (0)
4306 {
4307         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4308 }
4309
4310 void
4311 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4312 {
4313         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4314         assert (_line);
4315
4316         _item = &_line->grab_item ();
4317
4318         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4319            origin, and ditto for y.
4320         */
4321
4322         double mx = event->button.x;
4323         double my = event->button.y;
4324
4325         _line->grab_item().canvas_to_item (mx, my);
4326
4327         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4328
4329         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4330                 /* no adjacent points */
4331                 return;
4332         }
4333
4334         Drag::start_grab (event, _editor->cursors()->fader);
4335
4336         /* store grab start in item frame */
4337         double const bx = _line->nth (_before)->get_x();
4338         double const ax = _line->nth (_after)->get_x();
4339         double const click_ratio = (ax - mx) / (ax - bx);
4340
4341         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4342
4343         _fixed_grab_x = mx;
4344         _fixed_grab_y = cy;
4345
4346         double fraction = 1.0 - (cy / _line->height());
4347
4348         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4349 }
4350
4351 void
4352 LineDrag::motion (GdkEvent* event, bool first_move)
4353 {
4354         double dy = current_pointer_y() - last_pointer_y();
4355
4356         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4357                 dy *= 0.1;
4358         }
4359
4360         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4361
4362         _cumulative_y_drag = cy - _fixed_grab_y;
4363
4364         cy = max (0.0, cy);
4365         cy = min ((double) _line->height(), cy);
4366
4367         double const fraction = 1.0 - (cy / _line->height());
4368         uint32_t ignored;
4369
4370         if (first_move) {
4371                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4372
4373                 _editor->begin_reversible_command (_("automation range move"));
4374                 _line->start_drag_line (_before, _after, initial_fraction);
4375         }
4376
4377         /* we are ignoring x position for this drag, so we can just pass in anything */
4378         pair<double, float> result;
4379
4380         result = _line->drag_motion (0, fraction, true, false, ignored);
4381         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4382 }
4383
4384 void
4385 LineDrag::finished (GdkEvent* event, bool movement_occured)
4386 {
4387         if (movement_occured) {
4388                 motion (event, false);
4389                 _line->end_drag (false, 0);
4390                 _editor->commit_reversible_command ();
4391         } else {
4392                 /* add a new control point on the line */
4393
4394                 AutomationTimeAxisView* atv;
4395
4396                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4397                         framepos_t where = grab_frame ();
4398
4399                         double cx = 0;
4400                         double cy = _fixed_grab_y;
4401
4402                         _line->grab_item().item_to_canvas (cx, cy);
4403
4404                         atv->add_automation_event (event, where, cy, false);
4405                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4406                         AudioRegionView* arv;
4407
4408                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4409                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4410                         }
4411                 }
4412         }
4413 }
4414
4415 void
4416 LineDrag::aborted (bool)
4417 {
4418         _line->reset ();
4419 }
4420
4421 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4422         : Drag (e, i),
4423           _line (0),
4424           _arv (0),
4425           _region_view_grab_x (0.0),
4426           _cumulative_x_drag (0),
4427           _before (0.0),
4428           _max_x (0)
4429 {
4430         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4431 }
4432
4433 void
4434 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4435 {
4436         Drag::start_grab (event);
4437
4438         _line = reinterpret_cast<Line*> (_item);
4439         assert (_line);
4440
4441         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4442
4443         double cx = event->button.x;
4444         double cy = event->button.y;
4445
4446         _item->parent()->canvas_to_item (cx, cy);
4447
4448         /* store grab start in parent frame */
4449         _region_view_grab_x = cx;
4450
4451         _before = *(float*) _item->get_data ("position");
4452
4453         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4454
4455         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4456 }
4457
4458 void
4459 FeatureLineDrag::motion (GdkEvent*, bool)
4460 {
4461         double dx = _drags->current_pointer_x() - last_pointer_x();
4462
4463         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4464
4465         _cumulative_x_drag += dx;
4466
4467         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4468
4469         if (cx > _max_x){
4470                 cx = _max_x;
4471         }
4472         else if(cx < 0){
4473                 cx = 0;
4474         }
4475
4476         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4477         assert (bbox);
4478         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4479
4480         float *pos = new float;
4481         *pos = cx;
4482
4483         _line->set_data ("position", pos);
4484
4485         _before = cx;
4486 }
4487
4488 void
4489 FeatureLineDrag::finished (GdkEvent*, bool)
4490 {
4491         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4492         _arv->update_transient(_before, _before);
4493 }
4494
4495 void
4496 FeatureLineDrag::aborted (bool)
4497 {
4498         //_line->reset ();
4499 }
4500
4501 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4502         : Drag (e, i)
4503         , _vertical_only (false)
4504 {
4505         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4506 }
4507
4508 void
4509 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4510 {
4511         Drag::start_grab (event);
4512         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4513 }
4514
4515 void
4516 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4517 {
4518         framepos_t start;
4519         framepos_t end;
4520         double y1;
4521         double y2;
4522
4523         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4524
4525         framepos_t grab = grab_frame ();
4526         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4527                 _editor->snap_to_with_modifier (grab, event);
4528         } else {
4529                 grab = raw_grab_frame ();
4530         }
4531
4532         /* base start and end on initial click position */
4533
4534         if (pf < grab) {
4535                 start = pf;
4536                 end = grab;
4537         } else {
4538                 end = pf;
4539                 start = grab;
4540         }
4541
4542         if (current_pointer_y() < grab_y()) {
4543                 y1 = current_pointer_y();
4544                 y2 = grab_y();
4545         } else {
4546                 y2 = current_pointer_y();
4547                 y1 = grab_y();
4548         }
4549
4550         if (start != end || y1 != y2) {
4551
4552                 double x1 = _editor->sample_to_pixel (start);
4553                 double x2 = _editor->sample_to_pixel (end);
4554                 const double min_dimension = 2.0;
4555
4556                 if (_vertical_only) {
4557                         /* fixed 10 pixel width */
4558                         x2 = x1 + 10;
4559                 } else {
4560                         if (x2 < x1) {
4561                                 x2 = min (x1 - min_dimension, x2);
4562                         } else {
4563                                 x2 = max (x1 + min_dimension, x2);
4564                         }
4565                 }
4566
4567                 if (y2 < y1) {
4568                         y2 = min (y1 - min_dimension, y2);
4569                 } else {
4570                         y2 = max (y1 + min_dimension, y2);
4571                 }
4572
4573                 /* translate rect into item space and set */
4574
4575                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4576
4577                 /* this drag is a _trackview_only == true drag, so the y1 and
4578                  * y2 (computed using current_pointer_y() and grab_y()) will be
4579                  * relative to the top of the trackview group). The
4580                  * rubberband rect has the same parent/scroll offset as the
4581                  * the trackview group, so we can use the "r" rect directly
4582                  * to set the shape of the rubberband.
4583                  */
4584
4585                 _editor->rubberband_rect->set (r);
4586                 _editor->rubberband_rect->show();
4587                 _editor->rubberband_rect->raise_to_top();
4588
4589                 show_verbose_cursor_time (pf);
4590
4591                 do_select_things (event, true);
4592         }
4593 }
4594
4595 void
4596 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4597 {
4598         framepos_t x1;
4599         framepos_t x2;
4600         framepos_t grab = grab_frame ();
4601         framepos_t lpf = last_pointer_frame ();
4602
4603         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4604                 grab = raw_grab_frame ();
4605                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4606         }
4607
4608         if (grab < lpf) {
4609                 x1 = grab;
4610                 x2 = lpf;
4611         } else {
4612                 x2 = grab;
4613                 x1 = lpf;
4614         }
4615
4616         double y1;
4617         double y2;
4618
4619         if (current_pointer_y() < grab_y()) {
4620                 y1 = current_pointer_y();
4621                 y2 = grab_y();
4622         } else {
4623                 y2 = current_pointer_y();
4624                 y1 = grab_y();
4625         }
4626
4627         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4628 }
4629
4630 void
4631 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4632 {
4633         if (movement_occurred) {
4634
4635                 motion (event, false);
4636                 do_select_things (event, false);
4637
4638         } else {
4639
4640                 /* just a click */
4641
4642                 bool do_deselect = true;
4643                 MidiTimeAxisView* mtv;
4644
4645                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4646                         /* MIDI track */
4647                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4648                                 /* nothing selected */
4649                                 add_midi_region (mtv, true);
4650                                 do_deselect = false;
4651                         }
4652                 }
4653
4654                 /* do not deselect if Primary or Tertiary (toggle-select or
4655                  * extend-select are pressed.
4656                  */
4657
4658                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4659                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4660                     do_deselect) {
4661                         deselect_things ();
4662                 }
4663
4664         }
4665
4666         _editor->rubberband_rect->hide();
4667 }
4668
4669 void
4670 RubberbandSelectDrag::aborted (bool)
4671 {
4672         _editor->rubberband_rect->hide ();
4673 }
4674
4675 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4676         : RegionDrag (e, i, p, v)
4677 {
4678         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4679 }
4680
4681 void
4682 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4683 {
4684         Drag::start_grab (event, cursor);
4685
4686         _editor->get_selection().add (_primary);
4687
4688         framepos_t where = _primary->region()->position();
4689         setup_snap_delta (where);
4690
4691         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4692 }
4693
4694 void
4695 TimeFXDrag::motion (GdkEvent* event, bool)
4696 {
4697         RegionView* rv = _primary;
4698         StreamView* cv = rv->get_time_axis_view().view ();
4699
4700         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4701         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4702         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4703         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4704         _editor->snap_to_with_modifier (pf, event);
4705         pf -= snap_delta (event->button.state);
4706
4707         if (pf > rv->region()->position()) {
4708                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4709         }
4710
4711         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4712 }
4713
4714 void
4715 TimeFXDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4716 {
4717         _primary->get_time_axis_view().hide_timestretch ();
4718
4719         if (!movement_occurred) {
4720                 return;
4721         }
4722
4723         if (last_pointer_frame() < _primary->region()->position()) {
4724                 /* backwards drag of the left edge - not usable */
4725                 return;
4726         }
4727
4728         framecnt_t newlen = last_pointer_frame() - _primary->region()->position();
4729
4730         float percentage = (double) newlen / (double) _primary->region()->length();
4731
4732 #ifndef USE_RUBBERBAND
4733         // Soundtouch uses percentage / 100 instead of normal (/ 1)
4734         if (_primary->region()->data_type() == DataType::AUDIO) {
4735                 percentage = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4736         }
4737 #endif
4738
4739         if (!_editor->get_selection().regions.empty()) {
4740                 /* primary will already be included in the selection, and edit
4741                    group shared editing will propagate selection across
4742                    equivalent regions, so just use the current region
4743                    selection.
4744                 */
4745
4746                 if (_editor->time_stretch (_editor->get_selection().regions, percentage) == -1) {
4747                         error << _("An error occurred while executing time stretch operation") << endmsg;
4748                 }
4749         }
4750 }
4751
4752 void
4753 TimeFXDrag::aborted (bool)
4754 {
4755         _primary->get_time_axis_view().hide_timestretch ();
4756 }
4757
4758 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4759         : Drag (e, i)
4760 {
4761         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4762 }
4763
4764 void
4765 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4766 {
4767         Drag::start_grab (event);
4768 }
4769
4770 void
4771 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4772 {
4773         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4774 }
4775
4776 void
4777 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4778 {
4779         if (movement_occurred && _editor->session()) {
4780                 /* make sure we stop */
4781                 _editor->session()->request_transport_speed (0.0);
4782         }
4783 }
4784
4785 void
4786 ScrubDrag::aborted (bool)
4787 {
4788         /* XXX: TODO */
4789 }
4790
4791 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4792         : Drag (e, i)
4793         , _operation (o)
4794         , _add (false)
4795         , _time_selection_at_start (!_editor->get_selection().time.empty())
4796 {
4797         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4798
4799         if (_time_selection_at_start) {
4800                 start_at_start = _editor->get_selection().time.start();
4801                 end_at_start = _editor->get_selection().time.end_frame();
4802         }
4803 }
4804
4805 void
4806 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4807 {
4808         if (_editor->session() == 0) {
4809                 return;
4810         }
4811
4812         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4813
4814         switch (_operation) {
4815         case CreateSelection:
4816                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4817                         _add = true;
4818                 } else {
4819                         _add = false;
4820                 }
4821                 cursor = _editor->cursors()->selector;
4822                 Drag::start_grab (event, cursor);
4823                 break;
4824
4825         case SelectionStartTrim:
4826                 if (_editor->clicked_axisview) {
4827                         _editor->clicked_axisview->order_selection_trims (_item, true);
4828                 }
4829                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4830                 break;
4831
4832         case SelectionEndTrim:
4833                 if (_editor->clicked_axisview) {
4834                         _editor->clicked_axisview->order_selection_trims (_item, false);
4835                 }
4836                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4837                 break;
4838
4839         case SelectionMove:
4840                 Drag::start_grab (event, cursor);
4841                 break;
4842
4843         case SelectionExtend:
4844                 Drag::start_grab (event, cursor);
4845                 break;
4846         }
4847
4848         if (_operation == SelectionMove) {
4849                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4850         } else {
4851                 show_verbose_cursor_time (adjusted_current_frame (event));
4852         }
4853 }
4854
4855 void
4856 SelectionDrag::setup_pointer_frame_offset ()
4857 {
4858         switch (_operation) {
4859         case CreateSelection:
4860                 _pointer_frame_offset = 0;
4861                 break;
4862
4863         case SelectionStartTrim:
4864         case SelectionMove:
4865                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4866                 break;
4867
4868         case SelectionEndTrim:
4869                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4870                 break;
4871
4872         case SelectionExtend:
4873                 break;
4874         }
4875 }
4876
4877 void
4878 SelectionDrag::motion (GdkEvent* event, bool first_move)
4879 {
4880         framepos_t start = 0;
4881         framepos_t end = 0;
4882         framecnt_t length = 0;
4883         framecnt_t distance = 0;
4884
4885         framepos_t const pending_position = adjusted_current_frame (event);
4886
4887         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4888                 return;
4889         }
4890
4891         switch (_operation) {
4892         case CreateSelection:
4893         {
4894                 framepos_t grab = grab_frame ();
4895
4896                 if (first_move) {
4897                         grab = adjusted_current_frame (event, false);
4898                         if (grab < pending_position) {
4899                                 _editor->snap_to (grab, RoundDownMaybe);
4900                         }  else {
4901                                 _editor->snap_to (grab, RoundUpMaybe);
4902                         }
4903                 }
4904
4905                 if (pending_position < grab) {
4906                         start = pending_position;
4907                         end = grab;
4908                 } else {
4909                         end = pending_position;
4910                         start = grab;
4911                 }
4912
4913                 /* first drag: Either add to the selection
4914                    or create a new selection
4915                 */
4916
4917                 if (first_move) {
4918
4919                         if (_add) {
4920
4921                                 /* adding to the selection */
4922                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4923                                 _editor->clicked_selection = _editor->selection->add (start, end);
4924                                 _add = false;
4925
4926                         } else {
4927
4928                                 /* new selection */
4929
4930                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4931                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4932                                 }
4933
4934                                 _editor->clicked_selection = _editor->selection->set (start, end);
4935                         }
4936                 }
4937
4938                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4939                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4940                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4941                 if (atest) {
4942                         _editor->selection->add (atest);
4943                         break;
4944                 }
4945
4946                 /* select all tracks within the rectangle that we've marked out so far */
4947                 TrackViewList new_selection;
4948                 TrackViewList& all_tracks (_editor->track_views);
4949
4950                 ArdourCanvas::Coord const top = grab_y();
4951                 ArdourCanvas::Coord const bottom = current_pointer_y();
4952
4953                 if (top >= 0 && bottom >= 0) {
4954
4955                         //first, find the tracks that are covered in the y range selection
4956                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4957                                 if ((*i)->covered_by_y_range (top, bottom)) {
4958                                         new_selection.push_back (*i);
4959                                 }
4960                         }
4961
4962                         //now find any tracks that are GROUPED with the tracks we selected
4963                         TrackViewList grouped_add = new_selection;
4964                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
4965                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
4966                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
4967                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
4968                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
4969                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
4970                                                         grouped_add.push_back (*j);
4971                                         }
4972                                 }
4973                         }
4974
4975                         //now compare our list with the current selection, and add or remove as necessary
4976                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
4977                         TrackViewList tracks_to_add;
4978                         TrackViewList tracks_to_remove;
4979                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
4980                                 if ( !_editor->selection->tracks.contains ( *i ) )
4981                                         tracks_to_add.push_back ( *i );
4982                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
4983                                 if ( !grouped_add.contains ( *i ) )
4984                                         tracks_to_remove.push_back ( *i );
4985                         _editor->selection->add(tracks_to_add);
4986                         _editor->selection->remove(tracks_to_remove);
4987
4988                 }
4989         }
4990         break;
4991
4992         case SelectionStartTrim:
4993
4994                 end = _editor->selection->time[_editor->clicked_selection].end;
4995
4996                 if (pending_position > end) {
4997                         start = end;
4998                 } else {
4999                         start = pending_position;
5000                 }
5001                 break;
5002
5003         case SelectionEndTrim:
5004
5005                 start = _editor->selection->time[_editor->clicked_selection].start;
5006
5007                 if (pending_position < start) {
5008                         end = start;
5009                 } else {
5010                         end = pending_position;
5011                 }
5012
5013                 break;
5014
5015         case SelectionMove:
5016
5017                 start = _editor->selection->time[_editor->clicked_selection].start;
5018                 end = _editor->selection->time[_editor->clicked_selection].end;
5019
5020                 length = end - start;
5021                 distance = pending_position - start;
5022                 start = pending_position;
5023                 _editor->snap_to (start);
5024
5025                 end = start + length;
5026
5027                 break;
5028
5029         case SelectionExtend:
5030                 break;
5031         }
5032
5033         if (start != end) {
5034                 switch (_operation) {
5035                 case SelectionMove:
5036                         if (_time_selection_at_start) {
5037                                 _editor->selection->move_time (distance);
5038                         }
5039                         break;
5040                 default:
5041                         _editor->selection->replace (_editor->clicked_selection, start, end);
5042                 }
5043         }
5044
5045         if (_operation == SelectionMove) {
5046                 show_verbose_cursor_time(start);
5047         } else {
5048                 show_verbose_cursor_time(pending_position);
5049         }
5050 }
5051
5052 void
5053 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5054 {
5055         Session* s = _editor->session();
5056
5057         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5058         if (movement_occurred) {
5059                 motion (event, false);
5060                 /* XXX this is not object-oriented programming at all. ick */
5061                 if (_editor->selection->time.consolidate()) {
5062                         _editor->selection->TimeChanged ();
5063                 }
5064
5065                 /* XXX what if its a music time selection? */
5066                 if (s) {
5067                         if (s->get_play_range() && s->transport_rolling()) {
5068                                 s->request_play_range (&_editor->selection->time, true);
5069                         } else if (!s->config.get_external_sync()) {
5070                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5071                                         if (_operation == SelectionEndTrim)
5072                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5073                                         else
5074                                                 s->request_locate (_editor->get_selection().time.start());
5075                                 }
5076                         }
5077
5078                         if (_editor->get_selection().time.length() != 0) {
5079                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5080                         } else {
5081                                 s->clear_range_selection ();
5082                         }
5083                 }
5084
5085         } else {
5086                 /* just a click, no pointer movement.
5087                  */
5088
5089                 if (_operation == SelectionExtend) {
5090                         if (_time_selection_at_start) {
5091                                 framepos_t pos = adjusted_current_frame (event, false);
5092                                 framepos_t start = min (pos, start_at_start);
5093                                 framepos_t end = max (pos, end_at_start);
5094                                 _editor->selection->set (start, end);
5095                         }
5096                 } else {
5097                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5098                                 if (_editor->clicked_selection) {
5099                                         _editor->selection->remove (_editor->clicked_selection);
5100                                 }
5101                         } else {
5102                                 if (!_editor->clicked_selection) {
5103                                         _editor->selection->clear_time();
5104                                 }
5105                         }
5106                 }
5107
5108                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5109                         _editor->selection->set (_editor->clicked_axisview);
5110                 }
5111
5112                 if (s && s->get_play_range () && s->transport_rolling()) {
5113                         s->request_stop (false, false);
5114                 }
5115
5116         }
5117
5118         _editor->stop_canvas_autoscroll ();
5119         _editor->clicked_selection = 0;
5120         _editor->commit_reversible_selection_op ();
5121 }
5122
5123 void
5124 SelectionDrag::aborted (bool)
5125 {
5126         /* XXX: TODO */
5127 }
5128
5129 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5130         : Drag (e, i, false),
5131           _operation (o),
5132           _copy (false)
5133 {
5134         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5135
5136         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5137                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5138                                                                       physical_screen_height (_editor->get_window())));
5139         _drag_rect->hide ();
5140
5141         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5142         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5143 }
5144
5145 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5146 {
5147         /* normal canvas items will be cleaned up when their parent group is deleted. But
5148            this item is created as the child of a long-lived parent group, and so we
5149            need to explicitly delete it.
5150         */
5151         delete _drag_rect;
5152 }
5153
5154 void
5155 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5156 {
5157         if (_editor->session() == 0) {
5158                 return;
5159         }
5160
5161         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5162
5163         if (!_editor->temp_location) {
5164                 _editor->temp_location = new Location (*_editor->session());
5165         }
5166
5167         switch (_operation) {
5168         case CreateSkipMarker:
5169         case CreateRangeMarker:
5170         case CreateTransportMarker:
5171         case CreateCDMarker:
5172
5173                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5174                         _copy = true;
5175                 } else {
5176                         _copy = false;
5177                 }
5178                 cursor = _editor->cursors()->selector;
5179                 break;
5180         }
5181
5182         Drag::start_grab (event, cursor);
5183
5184         show_verbose_cursor_time (adjusted_current_frame (event));
5185 }
5186
5187 void
5188 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5189 {
5190         framepos_t start = 0;
5191         framepos_t end = 0;
5192         ArdourCanvas::Rectangle *crect;
5193
5194         switch (_operation) {
5195         case CreateSkipMarker:
5196                 crect = _editor->range_bar_drag_rect;
5197                 break;
5198         case CreateRangeMarker:
5199                 crect = _editor->range_bar_drag_rect;
5200                 break;
5201         case CreateTransportMarker:
5202                 crect = _editor->transport_bar_drag_rect;
5203                 break;
5204         case CreateCDMarker:
5205                 crect = _editor->cd_marker_bar_drag_rect;
5206                 break;
5207         default:
5208                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5209                 return;
5210                 break;
5211         }
5212
5213         framepos_t const pf = adjusted_current_frame (event);
5214
5215         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5216                 framepos_t grab = grab_frame ();
5217                 _editor->snap_to (grab);
5218
5219                 if (pf < grab_frame()) {
5220                         start = pf;
5221                         end = grab;
5222                 } else {
5223                         end = pf;
5224                         start = grab;
5225                 }
5226
5227                 /* first drag: Either add to the selection
5228                    or create a new selection.
5229                 */
5230
5231                 if (first_move) {
5232
5233                         _editor->temp_location->set (start, end);
5234
5235                         crect->show ();
5236
5237                         update_item (_editor->temp_location);
5238                         _drag_rect->show();
5239                         //_drag_rect->raise_to_top();
5240
5241                 }
5242         }
5243
5244         if (start != end) {
5245                 _editor->temp_location->set (start, end);
5246
5247                 double x1 = _editor->sample_to_pixel (start);
5248                 double x2 = _editor->sample_to_pixel (end);
5249                 crect->set_x0 (x1);
5250                 crect->set_x1 (x2);
5251
5252                 update_item (_editor->temp_location);
5253         }
5254
5255         show_verbose_cursor_time (pf);
5256
5257 }
5258
5259 void
5260 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5261 {
5262         Location * newloc = 0;
5263         string rangename;
5264         int flags;
5265
5266         if (movement_occurred) {
5267                 motion (event, false);
5268                 _drag_rect->hide();
5269
5270                 switch (_operation) {
5271                 case CreateSkipMarker:
5272                 case CreateRangeMarker:
5273                 case CreateCDMarker:
5274                     {
5275                         XMLNode &before = _editor->session()->locations()->get_state();
5276                         if (_operation == CreateSkipMarker) {
5277                                 _editor->begin_reversible_command (_("new skip marker"));
5278                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5279                                 flags = Location::IsRangeMarker | Location::IsSkip;
5280                                 _editor->range_bar_drag_rect->hide();
5281                         } else if (_operation == CreateCDMarker) {
5282                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5283                                 _editor->begin_reversible_command (_("new CD marker"));
5284                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5285                                 _editor->cd_marker_bar_drag_rect->hide();
5286                         } else {
5287                                 _editor->begin_reversible_command (_("new skip marker"));
5288                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5289                                 flags = Location::IsRangeMarker;
5290                                 _editor->range_bar_drag_rect->hide();
5291                         }
5292                         newloc = new Location (
5293                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5294                                 );
5295
5296                         _editor->session()->locations()->add (newloc, true);
5297                         XMLNode &after = _editor->session()->locations()->get_state();
5298                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5299                         _editor->commit_reversible_command ();
5300                         break;
5301                     }
5302
5303                 case CreateTransportMarker:
5304                         // popup menu to pick loop or punch
5305                         _editor->new_transport_marker_context_menu (&event->button, _item);
5306                         break;
5307                 }
5308
5309         } else {
5310
5311                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5312
5313                 if (_operation == CreateTransportMarker) {
5314
5315                         /* didn't drag, so just locate */
5316
5317                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5318
5319                 } else if (_operation == CreateCDMarker) {
5320
5321                         /* didn't drag, but mark is already created so do
5322                          * nothing */
5323
5324                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5325
5326                         framepos_t start;
5327                         framepos_t end;
5328
5329                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5330
5331                         if (end == max_framepos) {
5332                                 end = _editor->session()->current_end_frame ();
5333                         }
5334
5335                         if (start == max_framepos) {
5336                                 start = _editor->session()->current_start_frame ();
5337                         }
5338
5339                         switch (_editor->mouse_mode) {
5340                         case MouseObject:
5341                                 /* find the two markers on either side and then make the selection from it */
5342                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5343                                 break;
5344
5345                         case MouseRange:
5346                                 /* find the two markers on either side of the click and make the range out of it */
5347                                 _editor->selection->set (start, end);
5348                                 break;
5349
5350                         default:
5351                                 break;
5352                         }
5353                 }
5354         }
5355
5356         _editor->stop_canvas_autoscroll ();
5357 }
5358
5359 void
5360 RangeMarkerBarDrag::aborted (bool movement_occured)
5361 {
5362         if (movement_occured) {
5363                 _drag_rect->hide ();
5364         }
5365 }
5366
5367 void
5368 RangeMarkerBarDrag::update_item (Location* location)
5369 {
5370         double const x1 = _editor->sample_to_pixel (location->start());
5371         double const x2 = _editor->sample_to_pixel (location->end());
5372
5373         _drag_rect->set_x0 (x1);
5374         _drag_rect->set_x1 (x2);
5375 }
5376
5377 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5378         : Drag (e, i)
5379         , _cumulative_dx (0)
5380         , _cumulative_dy (0)
5381         , _was_selected (false)
5382 {
5383         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5384
5385         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5386         assert (_primary);
5387         _region = &_primary->region_view ();
5388         _note_height = _region->midi_stream_view()->note_height ();
5389 }
5390
5391 void
5392 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5393 {
5394         Drag::start_grab (event);
5395         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5396
5397         if (!(_was_selected = _primary->selected())) {
5398
5399                 /* tertiary-click means extend selection - we'll do that on button release,
5400                    so don't add it here, because otherwise we make it hard to figure
5401                    out the "extend-to" range.
5402                 */
5403
5404                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5405
5406                 if (!extend) {
5407                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5408
5409                         if (add) {
5410                                 _region->note_selected (_primary, true);
5411                         } else {
5412                                 _editor->get_selection().clear_points();
5413                                 _region->unique_select (_primary);
5414                         }
5415                 }
5416         }
5417 }
5418
5419 /** @return Current total drag x change in frames */
5420 frameoffset_t
5421 NoteDrag::total_dx (const guint state) const
5422 {
5423         /* dx in frames */
5424         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5425
5426         /* primary note time */
5427         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5428
5429         /* new time of the primary note in session frames */
5430         frameoffset_t st = n + dx + snap_delta (state);
5431
5432         framepos_t const rp = _region->region()->position ();
5433
5434         /* prevent the note being dragged earlier than the region's position */
5435         st = max (st, rp);
5436
5437         /* possibly snap and return corresponding delta */
5438
5439         bool snap = true;
5440
5441         if (ArdourKeyboard::indicates_snap (state)) {
5442                 if (_editor->snap_mode () != SnapOff) {
5443                         snap = false;
5444                 }
5445         } else {
5446                 if (_editor->snap_mode () == SnapOff) {
5447                         snap = false;
5448                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5449                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5450                                 snap = true;
5451                         }
5452                 }
5453         }
5454
5455         frameoffset_t ret;
5456         if (snap) {
5457                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5458                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5459         } else {
5460                 ret = st - n - snap_delta (state);
5461         }
5462         return ret;
5463 }
5464
5465 /** @return Current total drag y change in note number */
5466 int8_t
5467 NoteDrag::total_dy () const
5468 {
5469         MidiStreamView* msv = _region->midi_stream_view ();
5470         double const y = _region->midi_view()->y_position ();
5471         /* new current note */
5472         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5473         /* clamp */
5474         n = max (msv->lowest_note(), n);
5475         n = min (msv->highest_note(), n);
5476         /* and work out delta */
5477         return n - msv->y_to_note (grab_y() - y);
5478 }
5479
5480 void
5481 NoteDrag::motion (GdkEvent * event, bool)
5482 {
5483         /* Total change in x and y since the start of the drag */
5484         frameoffset_t const dx = total_dx (event->button.state);
5485         int8_t const dy = total_dy ();
5486
5487         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5488         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5489         double const tdy = -dy * _note_height - _cumulative_dy;
5490
5491         if (tdx || tdy) {
5492                 _cumulative_dx += tdx;
5493                 _cumulative_dy += tdy;
5494
5495                 int8_t note_delta = total_dy();
5496
5497                 _region->move_selection (tdx, tdy, note_delta);
5498
5499                 /* the new note value may be the same as the old one, but we
5500                  * don't know what that means because the selection may have
5501                  * involved more than one note and we might be doing something
5502                  * odd with them. so show the note value anyway, always.
5503                  */
5504
5505                 char buf[12];
5506                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5507
5508                 snprintf (buf, sizeof (buf), "%s (%d)", Evoral::midi_note_name (new_note).c_str(),
5509                           (int) floor ((double)new_note));
5510
5511                 show_verbose_cursor_text (buf);
5512         }
5513 }
5514
5515 void
5516 NoteDrag::finished (GdkEvent* ev, bool moved)
5517 {
5518         if (!moved) {
5519                 /* no motion - select note */
5520
5521                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5522                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5523
5524                         bool changed = false;
5525
5526                         if (_was_selected) {
5527                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5528                                 if (add) {
5529                                         _region->note_deselected (_primary);
5530                                         changed = true;
5531                                 } else {
5532                                         _editor->get_selection().clear_points();
5533                                         _region->unique_select (_primary);
5534                                         changed = true;
5535                                 }
5536                         } else {
5537                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5538                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5539
5540                                 if (!extend && !add && _region->selection_size() > 1) {
5541                                         _editor->get_selection().clear_points();
5542                                         _region->unique_select (_primary);
5543                                         changed = true;
5544                                 } else if (extend) {
5545                                         _region->note_selected (_primary, true, true);
5546                                         changed = true;
5547                                 } else {
5548                                         /* it was added during button press */
5549                                         changed = true;
5550
5551                                 }
5552                         }
5553
5554                         if (changed) {
5555                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5556                                 _editor->commit_reversible_selection_op();
5557                         }
5558                 }
5559         } else {
5560                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5561         }
5562 }
5563
5564 void
5565 NoteDrag::aborted (bool)
5566 {
5567         /* XXX: TODO */
5568 }
5569
5570 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5571 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5572         : Drag (editor, atv->base_item ())
5573         , _ranges (r)
5574         , _y_origin (atv->y_position())
5575         , _nothing_to_drag (false)
5576 {
5577         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5578         setup (atv->lines ());
5579 }
5580
5581 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5582 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5583         : Drag (editor, rv->get_canvas_group ())
5584         , _ranges (r)
5585         , _y_origin (rv->get_time_axis_view().y_position())
5586         , _nothing_to_drag (false)
5587         , _integral (false)
5588 {
5589         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5590
5591         list<boost::shared_ptr<AutomationLine> > lines;
5592
5593         AudioRegionView*      audio_view;
5594         AutomationRegionView* automation_view;
5595         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5596                 lines.push_back (audio_view->get_gain_line ());
5597         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5598                 lines.push_back (automation_view->line ());
5599                 _integral = true;
5600         } else {
5601                 error << _("Automation range drag created for invalid region type") << endmsg;
5602         }
5603
5604         setup (lines);
5605 }
5606
5607 /** @param lines AutomationLines to drag.
5608  *  @param offset Offset from the session start to the points in the AutomationLines.
5609  */
5610 void
5611 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5612 {
5613         /* find the lines that overlap the ranges being dragged */
5614         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5615         while (i != lines.end ()) {
5616                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5617                 ++j;
5618
5619                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5620
5621                 /* check this range against all the AudioRanges that we are using */
5622                 list<AudioRange>::const_iterator k = _ranges.begin ();
5623                 while (k != _ranges.end()) {
5624                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5625                                 break;
5626                         }
5627                         ++k;
5628                 }
5629
5630                 /* add it to our list if it overlaps at all */
5631                 if (k != _ranges.end()) {
5632                         Line n;
5633                         n.line = *i;
5634                         n.state = 0;
5635                         n.range = r;
5636                         _lines.push_back (n);
5637                 }
5638
5639                 i = j;
5640         }
5641
5642         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5643 }
5644
5645 double
5646 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5647 {
5648         return 1.0 - ((global_y - _y_origin) / line->height());
5649 }
5650
5651 double
5652 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5653 {
5654         const double v = list->eval(x);
5655         return _integral ? rint(v) : v;
5656 }
5657
5658 void
5659 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5660 {
5661         Drag::start_grab (event, cursor);
5662
5663         /* Get line states before we start changing things */
5664         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5665                 i->state = &i->line->get_state ();
5666                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5667         }
5668
5669         if (_ranges.empty()) {
5670
5671                 /* No selected time ranges: drag all points */
5672                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5673                         uint32_t const N = i->line->npoints ();
5674                         for (uint32_t j = 0; j < N; ++j) {
5675                                 i->points.push_back (i->line->nth (j));
5676                         }
5677                 }
5678
5679         }
5680
5681         if (_nothing_to_drag) {
5682                 return;
5683         }
5684 }
5685
5686 void
5687 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5688 {
5689         if (_nothing_to_drag && !first_move) {
5690                 return;
5691         }
5692
5693         if (first_move) {
5694                 _editor->begin_reversible_command (_("automation range move"));
5695
5696                 if (!_ranges.empty()) {
5697
5698                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5699
5700                                 framecnt_t const half = (i->start + i->end) / 2;
5701
5702                                 /* find the line that this audio range starts in */
5703                                 list<Line>::iterator j = _lines.begin();
5704                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5705                                         ++j;
5706                                 }
5707
5708                                 if (j != _lines.end()) {
5709                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5710
5711                                 /* j is the line that this audio range starts in; fade into it;
5712                                    64 samples length plucked out of thin air.
5713                                 */
5714
5715                                         framepos_t a = i->start + 64;
5716                                         if (a > half) {
5717                                                 a = half;
5718                                         }
5719
5720                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5721                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5722
5723                                         XMLNode &before = the_list->get_state();
5724                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5725                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5726
5727                                         if (add_p || add_q) {
5728                                                 _editor->session()->add_command (
5729                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5730                                         }
5731                                 }
5732
5733                                 /* same thing for the end */
5734
5735                                 j = _lines.begin();
5736                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5737                                         ++j;
5738                                 }
5739
5740                                 if (j != _lines.end()) {
5741                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5742
5743                                         /* j is the line that this audio range starts in; fade out of it;
5744                                            64 samples length plucked out of thin air.
5745                                         */
5746
5747                                         framepos_t b = i->end - 64;
5748                                         if (b < half) {
5749                                                 b = half;
5750                                         }
5751
5752                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5753                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5754
5755                                         XMLNode &before = the_list->get_state();
5756                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5757                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5758
5759                                         if (add_p || add_q) {
5760                                                 _editor->session()->add_command (
5761                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5762                                         }
5763                                 }
5764                         }
5765
5766                         _nothing_to_drag = true;
5767
5768                         /* Find all the points that should be dragged and put them in the relevant
5769                            points lists in the Line structs.
5770                         */
5771
5772                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5773
5774                                 uint32_t const N = i->line->npoints ();
5775                                 for (uint32_t j = 0; j < N; ++j) {
5776
5777                                         /* here's a control point on this line */
5778                                         ControlPoint* p = i->line->nth (j);
5779                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5780
5781                                         /* see if it's inside a range */
5782                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5783                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5784                                                 ++k;
5785                                         }
5786
5787                                         if (k != _ranges.end()) {
5788                                                 /* dragging this point */
5789                                                 _nothing_to_drag = false;
5790                                                 i->points.push_back (p);
5791                                         }
5792                                 }
5793                         }
5794                 }
5795
5796                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5797                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5798                 }
5799         }
5800
5801         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5802                 float const f = y_fraction (l->line, current_pointer_y());
5803                 /* we are ignoring x position for this drag, so we can just pass in anything */
5804                 pair<double, float> result;
5805                 uint32_t ignored;
5806                 result = l->line->drag_motion (0, f, true, false, ignored);
5807                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5808         }
5809 }
5810
5811 void
5812 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5813 {
5814         if (_nothing_to_drag || !motion_occurred) {
5815                 return;
5816         }
5817
5818         motion (event, false);
5819         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5820                 i->line->end_drag (false, 0);
5821         }
5822
5823         _editor->commit_reversible_command ();
5824 }
5825
5826 void
5827 AutomationRangeDrag::aborted (bool)
5828 {
5829         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5830                 i->line->reset ();
5831         }
5832 }
5833
5834 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5835         : view (v)
5836         , initial_time_axis_view (itav)
5837 {
5838         /* note that time_axis_view may be null if the regionview was created
5839          * as part of a copy operation.
5840          */
5841         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5842         layer = v->region()->layer ();
5843         initial_y = v->get_canvas_group()->position().y;
5844         initial_playlist = v->region()->playlist ();
5845         initial_position = v->region()->position ();
5846         initial_end = v->region()->position () + v->region()->length ();
5847 }
5848
5849 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5850         : Drag (e, i->canvas_item ())
5851         , _region_view (r)
5852         , _patch_change (i)
5853         , _cumulative_dx (0)
5854 {
5855         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5856                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5857                                                    grab_frame()));
5858 }
5859
5860 void
5861 PatchChangeDrag::motion (GdkEvent* ev, bool)
5862 {
5863         framepos_t f = adjusted_current_frame (ev);
5864         boost::shared_ptr<Region> r = _region_view->region ();
5865         f = max (f, r->position ());
5866         f = min (f, r->last_frame ());
5867
5868         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5869         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5870         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5871         _cumulative_dx = dxu;
5872 }
5873
5874 void
5875 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5876 {
5877         if (!movement_occurred) {
5878                 return;
5879         }
5880
5881         boost::shared_ptr<Region> r (_region_view->region ());
5882         framepos_t f = adjusted_current_frame (ev);
5883         f = max (f, r->position ());
5884         f = min (f, r->last_frame ());
5885
5886         _region_view->move_patch_change (
5887                 *_patch_change,
5888                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5889                 );
5890 }
5891
5892 void
5893 PatchChangeDrag::aborted (bool)
5894 {
5895         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5896 }
5897
5898 void
5899 PatchChangeDrag::setup_pointer_frame_offset ()
5900 {
5901         boost::shared_ptr<Region> region = _region_view->region ();
5902         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5903 }
5904
5905 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5906         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5907         , _region_view (rv)
5908 {
5909
5910 }
5911
5912 void
5913 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5914 {
5915         _region_view->update_drag_selection (
5916                 x1, x2, y1, y2,
5917                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5918 }
5919
5920 void
5921 MidiRubberbandSelectDrag::deselect_things ()
5922 {
5923         /* XXX */
5924 }
5925
5926 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5927         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5928         , _region_view (rv)
5929 {
5930         _vertical_only = true;
5931 }
5932
5933 void
5934 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5935 {
5936         double const y = _region_view->midi_view()->y_position ();
5937
5938         y1 = max (0.0, y1 - y);
5939         y2 = max (0.0, y2 - y);
5940
5941         _region_view->update_vertical_drag_selection (
5942                 y1,
5943                 y2,
5944                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5945                 );
5946 }
5947
5948 void
5949 MidiVerticalSelectDrag::deselect_things ()
5950 {
5951         /* XXX */
5952 }
5953
5954 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5955         : RubberbandSelectDrag (e, i)
5956 {
5957
5958 }
5959
5960 void
5961 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5962 {
5963         if (drag_in_progress) {
5964                 /* We just want to select things at the end of the drag, not during it */
5965                 return;
5966         }
5967
5968         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
5969
5970         _editor->begin_reversible_selection_op (X_("rubberband selection"));
5971
5972         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
5973
5974         _editor->commit_reversible_selection_op ();
5975 }
5976
5977 void
5978 EditorRubberbandSelectDrag::deselect_things ()
5979 {
5980         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
5981
5982         _editor->selection->clear_tracks();
5983         _editor->selection->clear_regions();
5984         _editor->selection->clear_points ();
5985         _editor->selection->clear_lines ();
5986         _editor->selection->clear_midi_notes ();
5987
5988         _editor->commit_reversible_selection_op();
5989 }
5990
5991 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
5992         : Drag (e, i)
5993         , _region_view (rv)
5994         , _drag_rect (0)
5995 {
5996         _note[0] = _note[1] = 0;
5997 }
5998
5999 NoteCreateDrag::~NoteCreateDrag ()
6000 {
6001         delete _drag_rect;
6002 }
6003
6004 framecnt_t
6005 NoteCreateDrag::grid_frames (framepos_t t) const
6006 {
6007         bool success;
6008         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6009         if (!success) {
6010                 grid_beats = Evoral::Beats(1);
6011         }
6012
6013         return _region_view->region_beats_to_region_frames (grid_beats);
6014 }
6015
6016 void
6017 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6018 {
6019         Drag::start_grab (event, cursor);
6020
6021         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6022
6023         framepos_t pf = _drags->current_pointer_frame ();
6024         framecnt_t const g = grid_frames (pf);
6025
6026         /* Hack so that we always snap to the note that we are over, instead of snapping
6027            to the next one if we're more than halfway through the one we're over.
6028         */
6029         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6030                 pf -= g / 2;
6031         }
6032
6033         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6034         _note[1] = _note[0];
6035
6036         MidiStreamView* sv = _region_view->midi_stream_view ();
6037         double const x = _editor->sample_to_pixel (_note[0]);
6038         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6039
6040         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6041         _drag_rect->set_outline_all ();
6042         _drag_rect->set_outline_color (0xffffff99);
6043         _drag_rect->set_fill_color (0xffffff66);
6044 }
6045
6046 void
6047 NoteCreateDrag::motion (GdkEvent* event, bool)
6048 {
6049         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6050         double const x0 = _editor->sample_to_pixel (_note[0]);
6051         double const x1 = _editor->sample_to_pixel (_note[1]);
6052         _drag_rect->set_x0 (std::min(x0, x1));
6053         _drag_rect->set_x1 (std::max(x0, x1));
6054 }
6055
6056 void
6057 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6058 {
6059         if (!had_movement) {
6060                 return;
6061         }
6062
6063         framepos_t const start = min (_note[0], _note[1]);
6064         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6065
6066         framecnt_t const g = grid_frames (start);
6067         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6068
6069         if (_editor->snap_mode() == SnapNormal && length < g) {
6070                 length = g;
6071         }
6072
6073         Evoral::Beats length_beats = max (
6074                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6075
6076         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6077 }
6078
6079 double
6080 NoteCreateDrag::y_to_region (double y) const
6081 {
6082         double x = 0;
6083         _region_view->get_canvas_group()->canvas_to_item (x, y);
6084         return y;
6085 }
6086
6087 void
6088 NoteCreateDrag::aborted (bool)
6089 {
6090
6091 }
6092
6093 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6094         : Drag (e, i)
6095         , arv (rv)
6096         , start (start_yn)
6097 {
6098         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6099 }
6100
6101 void
6102 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6103 {
6104         Drag::start_grab (event, cursor);
6105 }
6106
6107 void
6108 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6109 {
6110         double distance;
6111         double new_length;
6112         framecnt_t len;
6113
6114         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6115
6116         if (start) {
6117                 distance = _drags->current_pointer_x() - grab_x();
6118                 len = ar->fade_in()->back()->when;
6119         } else {
6120                 distance = grab_x() - _drags->current_pointer_x();
6121                 len = ar->fade_out()->back()->when;
6122         }
6123
6124         /* how long should it be ? */
6125
6126         new_length = len + _editor->pixel_to_sample (distance);
6127
6128         /* now check with the region that this is legal */
6129
6130         new_length = ar->verify_xfade_bounds (new_length, start);
6131
6132         if (start) {
6133                 arv->reset_fade_in_shape_width (ar, new_length);
6134         } else {
6135                 arv->reset_fade_out_shape_width (ar, new_length);
6136         }
6137 }
6138
6139 void
6140 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6141 {
6142         double distance;
6143         double new_length;
6144         framecnt_t len;
6145
6146         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6147
6148         if (start) {
6149                 distance = _drags->current_pointer_x() - grab_x();
6150                 len = ar->fade_in()->back()->when;
6151         } else {
6152                 distance = grab_x() - _drags->current_pointer_x();
6153                 len = ar->fade_out()->back()->when;
6154         }
6155
6156         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6157
6158         _editor->begin_reversible_command ("xfade trim");
6159         ar->playlist()->clear_owned_changes ();
6160
6161         if (start) {
6162                 ar->set_fade_in_length (new_length);
6163         } else {
6164                 ar->set_fade_out_length (new_length);
6165         }
6166
6167         /* Adjusting the xfade may affect other regions in the playlist, so we need
6168            to get undo Commands from the whole playlist rather than just the
6169            region.
6170         */
6171
6172         vector<Command*> cmds;
6173         ar->playlist()->rdiff (cmds);
6174         _editor->session()->add_commands (cmds);
6175         _editor->commit_reversible_command ();
6176
6177 }
6178
6179 void
6180 CrossfadeEdgeDrag::aborted (bool)
6181 {
6182         if (start) {
6183                 // arv->redraw_start_xfade ();
6184         } else {
6185                 // arv->redraw_end_xfade ();
6186         }
6187 }
6188
6189 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6190         : Drag (e, item, true)
6191         , line (new EditorCursor (*e))
6192 {
6193         line->set_position (pos);
6194         line->show ();
6195 }
6196
6197 RegionCutDrag::~RegionCutDrag ()
6198 {
6199         delete line;
6200 }
6201
6202 void
6203 RegionCutDrag::motion (GdkEvent*, bool)
6204 {
6205         framepos_t where = _drags->current_pointer_frame();
6206         _editor->snap_to (where);
6207
6208         line->set_position (where);
6209 }
6210
6211 void
6212 RegionCutDrag::finished (GdkEvent*, bool)
6213 {
6214         _editor->get_track_canvas()->canvas()->re_enter();
6215
6216         framepos_t pos = _drags->current_pointer_frame();
6217
6218         line->hide ();
6219
6220         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6221
6222         if (rs.empty()) {
6223                 return;
6224         }
6225
6226         _editor->split_regions_at (pos, rs);
6227 }
6228
6229 void
6230 RegionCutDrag::aborted (bool)
6231 {
6232 }