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, false);
 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                 /* not that the frame rate used here can be affected by pull up/down which
 519                    might be wrong.
 520                 */
 521                 framecnt_t len = map.frame_at_beat (map.beat_at_frame (pos) + 1.0) - pos;
 522                 return view->add_region (grab_frame(), len, commit);
 523         }
 524
 525         return boost::shared_ptr<Region>();
 526 }
 527
 528 struct EditorOrderTimeAxisViewSorter {
 529         bool operator() (TimeAxisView* a, TimeAxisView* b) {
 530                 RouteTimeAxisView* ra = dynamic_cast<RouteTimeAxisView*> (a);
 531                 RouteTimeAxisView* rb = dynamic_cast<RouteTimeAxisView*> (b);
 532                 assert (ra && rb);
 533                 return ra->route()->order_key () < rb->route()->order_key ();
 534         }
 535 };
 536
 537 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 538         : Drag (e, i)
 539         , _primary (p)
 540         , _ntracks (0)
 541 {
 542         _editor->visible_order_range (&_visible_y_low, &_visible_y_high);
 543
 544         /* Make a list of tracks to refer to during the drag; we include hidden tracks,
 545            as some of the regions we are dragging may be on such tracks.
 546         */
 547
 548         TrackViewList track_views = _editor->track_views;
 549         track_views.sort (EditorOrderTimeAxisViewSorter ());
 550
 551         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 552                 _time_axis_views.push_back (*i);
 553
 554                 TimeAxisView::Children children_list = (*i)->get_child_list ();
 555                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 556                         _time_axis_views.push_back (j->get());
 557                 }
 558         }
 559
 560         /* the list of views can be empty at this point if this is a region list-insert drag
 561          */
 562
 563         for (list<RegionView*>::const_iterator i = v.begin(); i != v.end(); ++i) {
 564                 _views.push_back (DraggingView (*i, this, &(*i)->get_time_axis_view()));
 565         }
 566
 567         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), boost::bind (&RegionDrag::region_going_away, this, _1), gui_context());
 568 }
 569
 570 void
 571 RegionDrag::region_going_away (RegionView* v)
 572 {
 573         list<DraggingView>::iterator i = _views.begin ();
 574         while (i != _views.end() && i->view != v) {
 575                 ++i;
 576         }
 577
 578         if (i != _views.end()) {
 579                 _views.erase (i);
 580         }
 581 }
 582
 583 /** Given a TimeAxisView, return the index of it into the _time_axis_views vector,
 584  *  or -1 if it is not found.
 585  */
 586 int
 587 RegionDrag::find_time_axis_view (TimeAxisView* t) const
 588 {
 589         int i = 0;
 590         int const N = _time_axis_views.size ();
 591         while (i < N && _time_axis_views[i] != t) {
 592                 ++i;
 593         }
 594
 595         if (_time_axis_views[i] != t) {
 596                 return -1;
 597         }
 598
 599         return i;
 600 }
 601
 602 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 603         : RegionDrag (e, i, p, v)
 604         , _brushing (b)
 605         , _ignore_video_lock (false)
 606         , _total_x_delta (0)
 607         , _last_pointer_time_axis_view (0)
 608         , _last_pointer_layer (0)
 609         , _ndropzone (0)
 610         , _pdropzone (0)
 611         , _ddropzone (0)
 612 {
 613         DEBUG_TRACE (DEBUG::Drags, "New RegionMotionDrag\n");
 614 }
 615
 616 void
 617 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
 618 {
 619         Drag::start_grab (event, cursor);
 620         setup_snap_delta (_last_frame_position);
 621
 622         show_verbose_cursor_time (_last_frame_position);
 623
 624         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (current_pointer_y ());
 625         if (tv.first) {
 626                 _last_pointer_time_axis_view = find_time_axis_view (tv.first);
 627                 assert(_last_pointer_time_axis_view >= 0);
 628                 _last_pointer_layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
 629         }
 630
 631         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
 632                 _ignore_video_lock = true;
 633         }
 634
 635         if (_brushing) {
 636                 /* cross track dragging seems broken here. disabled for now. */
 637                 _y_constrained = true;
 638         }
 639 }
 640
 641 double
 642 RegionMotionDrag::compute_x_delta (GdkEvent const * event, framepos_t* pending_region_position)
 643 {
 644         /* compute the amount of pointer motion in frames, and where
 645            the region would be if we moved it by that much.
 646         */
 647         *pending_region_position = adjusted_frame (_drags->current_pointer_frame (), event, false);
 648
 649         framepos_t sync_frame;
 650         framecnt_t sync_offset;
 651         int32_t sync_dir;
 652
 653         sync_offset = _primary->region()->sync_offset (sync_dir);
 654
 655         /* we don't handle a sync point that lies before zero.
 656          */
 657         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 658
 659                 framecnt_t const sd = snap_delta (event->button.state);
 660                 sync_frame = *pending_region_position + (sync_dir * sync_offset) + sd;
 661
 662                 _editor->snap_to_with_modifier (sync_frame, event);
 663
 664                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame) - sd;
 665
 666         } else {
 667                 *pending_region_position = _last_frame_position;
 668         }
 669
 670         if (*pending_region_position > max_framepos - _primary->region()->length()) {
 671                 *pending_region_position = _last_frame_position;
 672         }
 673
 674         double dx = 0;
 675
 676         bool const x_move_allowed = !_x_constrained;
 677
 678         if ((*pending_region_position != _last_frame_position) && x_move_allowed) {
 679
 680                 /* x movement since last time (in pixels) */
 681                 dx = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->samples_per_pixel;
 682
 683                 /* total x movement */
 684                 framecnt_t total_dx = *pending_region_position;
 685                 if (regions_came_from_canvas()) {
 686                         total_dx = total_dx - grab_frame ();
 687                 }
 688
 689                 /* check that no regions have gone off the start of the session */
 690                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 691                         if ((i->view->region()->position() + total_dx) < 0) {
 692                                 dx = 0;
 693                                 *pending_region_position = _last_frame_position;
 694                                 break;
 695                         }
 696                 }
 697
 698         }
 699
 700         return dx;
 701 }
 702
 703 int
 704 RegionDrag::apply_track_delta (const int start, const int delta, const int skip, const bool distance_only) const
 705 {
 706         if (delta == 0) {
 707                 return start;
 708         }
 709
 710         const int tavsize  = _time_axis_views.size();
 711         const int dt = delta > 0 ? +1 : -1;
 712         int current  = start;
 713         int target   = start + delta - skip;
 714
 715         assert (current < 0 || current >= tavsize || !_time_axis_views[current]->hidden());
 716         assert (skip == 0 || (skip < 0 && delta < 0) || (skip > 0 && delta > 0));
 717
 718         while (current >= 0 && current != target) {
 719                 current += dt;
 720                 if (current < 0 && dt < 0) {
 721                         break;
 722                 }
 723                 if (current >= tavsize && dt > 0) {
 724                         break;
 725                 }
 726                 if (current < 0 || current >= tavsize) {
 727                         continue;
 728                 }
 729
 730                 RouteTimeAxisView const * rtav = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[current]);
 731                 if (_time_axis_views[current]->hidden() || !rtav || !rtav->is_track()) {
 732                         target += dt;
 733                 }
 734
 735                 if (distance_only && current == start + delta) {
 736                         break;
 737                 }
 738         }
 739         return target;
 740 }
 741
 742 bool
 743 RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
 744 {
 745         if (_y_constrained) {
 746                 return false;
 747         }
 748
 749         const int tavsize  = _time_axis_views.size();
 750         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 751                 int n = apply_track_delta (i->time_axis_view, delta_track, skip_invisible);
 752                 assert (n < 0 || n >= tavsize || !_time_axis_views[n]->hidden());
 753
 754                 if (i->time_axis_view < 0 || i->time_axis_view >= tavsize) {
 755                         /* already in the drop zone */
 756                         if (delta_track >= 0) {
 757                                 /* downward motion - OK if others are still not in the dropzone */
 758                                 continue;
 759                         }
 760
 761                 }
 762
 763                 if (n < 0) {
 764                         /* off the top */
 765                         return false;
 766                 } else if (n >= tavsize) {
 767                         /* downward motion into drop zone. That's fine. */
 768                         continue;
 769                 }
 770
 771                 RouteTimeAxisView const * to = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[n]);
 772                 if (to == 0 || to->hidden() || !to->is_track() || to->track()->data_type() != i->view->region()->data_type()) {
 773                         /* not a track, or the wrong type */
 774                         return false;
 775                 }
 776
 777                 double const l = i->layer + delta_layer;
 778
 779                 /* Note that we allow layer to be up to 0.5 below zero, as this is used by `Expanded'
 780                    mode to allow the user to place a region below another on layer 0.
 781                 */
 782                 if (delta_track == 0 && (l < -0.5 || l >= int (to->view()->layers()))) {
 783                         /* Off the top or bottom layer; note that we only refuse if the track hasn't changed.
 784                            If it has, the layers will be munged later anyway, so it's ok.
 785                         */
 786                         return false;
 787                 }
 788         }
 789
 790         /* all regions being dragged are ok with this change */
 791         return true;
 792 }
 793
 794 struct DraggingViewSorter {
 795         bool operator() (const DraggingView& a, const DraggingView& b) {
 796                 return a.time_axis_view < b.time_axis_view;
 797         }
 798 };
 799
 800 void
 801 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 802 {
 803         double delta_layer = 0;
 804         int delta_time_axis_view = 0;
 805         int current_pointer_time_axis_view = -1;
 806
 807         assert (!_views.empty ());
 808
 809         /* Note: time axis views in this method are often expressed as an index into the _time_axis_views vector */
 810
 811         /* Find the TimeAxisView that the pointer is now over */
 812         const double cur_y = current_pointer_y ();
 813         pair<TimeAxisView*, double> const r = _editor->trackview_by_y_position (cur_y);
 814         TimeAxisView* tv = r.first;
 815
 816         if (!tv && cur_y < 0) {
 817                 /* above trackview area, autoscroll hasn't moved us since last time, nothing to do */
 818                 return;
 819         }
 820
 821         /* find drop-zone y-position */
 822         Coord last_track_bottom_edge;
 823         last_track_bottom_edge = 0;
 824         for (std::vector<TimeAxisView*>::reverse_iterator t = _time_axis_views.rbegin(); t != _time_axis_views.rend(); ++t) {
 825                 if (!(*t)->hidden()) {
 826                         last_track_bottom_edge = (*t)->canvas_display()->canvas_origin ().y + (*t)->effective_height();
 827                         break;
 828                 }
 829         }
 830
 831         if (tv && tv->view()) {
 832                 /* the mouse is over a track */
 833                 double layer = r.second;
 834
 835                 if (first_move && tv->view()->layer_display() == Stacked) {
 836                         tv->view()->set_layer_display (Expanded);
 837                 }
 838
 839                 /* Here's the current pointer position in terms of time axis view and layer */
 840                 current_pointer_time_axis_view = find_time_axis_view (tv);
 841                 assert(current_pointer_time_axis_view >= 0);
 842
 843                 double const current_pointer_layer = tv->layer_display() == Overlaid ? 0 : layer;
 844
 845                 /* Work out the change in y */
 846
 847                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
 848                 if (!rtv || !rtv->is_track()) {
 849                         /* ignore busses early on. we can't move any regions on them */
 850                 } else if (_last_pointer_time_axis_view < 0) {
 851                         /* Was in the drop-zone, now over a track.
 852                          * Hence it must be an upward move (from the bottom)
 853                          *
 854                          * track_index is still -1, so delta must be set to
 855                          * move up the correct number of tracks from the bottom.
 856                          *
 857                          * This is necessary because steps may be skipped if
 858                          * the bottom-most track is not a valid target and/or
 859                          * if there are hidden tracks at the bottom.
 860                          * Hence the initial offset (_ddropzone) as well as the
 861                          * last valid pointer position (_pdropzone) need to be
 862                          * taken into account.
 863                          */
 864                         delta_time_axis_view = current_pointer_time_axis_view - _time_axis_views.size () + _ddropzone - _pdropzone;
 865                 } else {
 866                         delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
 867                 }
 868
 869                 /* TODO needs adjustment per DraggingView,
 870                  *
 871                  * e.g. select one region on the top-layer of a track
 872                  * and one region which is at the bottom-layer of another track
 873                  * drag both.
 874                  *
 875                  * Indicated drop-zones and layering is wrong.
 876                  * and may infer additional layers on the target-track
 877                  * (depending how many layers the original track had).
 878                  *
 879                  * Or select two regions (different layers) on a same track,
 880                  * move across a non-layer track.. -> layering info is lost.
 881                  * on drop either of the regions may be on top.
 882                  *
 883                  * Proposed solution: screw it :) well,
 884                  *   don't use delta_layer, use an absolute value
 885                  *   1) remember DraggingView's layer  as float 0..1  [current layer / all layers of source]
 886                  *   2) calculate current mouse pos, y-pos inside track divided by height of mouse-over track.
 887                  *   3) iterate over all DraggingView, find the one that is over the track with most layers
 888                  *   4) proportionally scale layer to layers available on target
 889                  */
 890                 delta_layer = current_pointer_layer - _last_pointer_layer;
 891
 892         }
 893         /* for automation lanes, there is a TimeAxisView but no ->view()
 894          * if (!tv) -> dropzone
 895          */
 896         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view >= 0) {
 897                 /* Moving into the drop-zone.. */
 898                 delta_time_axis_view = _time_axis_views.size () - _last_pointer_time_axis_view;
 899                 /* delta_time_axis_view may not be sufficient to move into the DZ
 900                  * the mouse may enter it, but it may not be a valid move due to
 901                  * constraints.
 902                  *
 903                  * -> remember the delta needed to move into the dropzone
 904                  */
 905                 _ddropzone = delta_time_axis_view;
 906                 /* ..but subtract hidden tracks (or routes) at the bottom.
 907                  * we silently move mover them
 908                  */
 909                 _ddropzone -= apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 910                               - _time_axis_views.size();
 911         }
 912         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view < 0) {
 913                 /* move around inside the zone.
 914                  * This allows to move further down until all regions are in the zone.
 915                  */
 916                 const double ptr_y = cur_y + _editor->get_trackview_group()->canvas_origin().y;
 917                 assert(ptr_y >= last_track_bottom_edge);
 918                 assert(_ddropzone > 0);
 919
 920                 /* calculate mouse position in 'tracks' below last track. */
 921                 const double dzi_h = TimeAxisView::preset_height (HeightNormal);
 922                 uint32_t dzpos = _ddropzone + floor((1 + ptr_y - last_track_bottom_edge) / dzi_h);
 923
 924                 if (dzpos > _pdropzone && _ndropzone < _ntracks) {
 925                         // move further down
 926                         delta_time_axis_view =  dzpos - _pdropzone;
 927                 } else if (dzpos < _pdropzone && _ndropzone > 0) {
 928                         // move up inside the DZ
 929                         delta_time_axis_view =  dzpos - _pdropzone;
 930                 }
 931         }
 932
 933         /* Work out the change in x */
 934         framepos_t pending_region_position;
 935         double const x_delta = compute_x_delta (event, &pending_region_position);
 936         _last_frame_position = pending_region_position;
 937
 938         /* calculate hidden tracks in current y-axis delta */
 939         int delta_skip = 0;
 940         if (_last_pointer_time_axis_view < 0 && _pdropzone > 0) {
 941                 /* The mouse is more than one track below the dropzone.
 942                  * distance calculation is not needed (and would not work, either
 943                  * because the dropzone is "packed").
 944                  *
 945                  * Except when [partially] moving regions out of dropzone in a large step.
 946                  * (the mouse may or may not remain in the DZ)
 947                  * Hidden tracks at the bottom of the TAV need to be skipped.
 948                  *
 949                  * This also handles the case if the mouse entered the DZ
 950                  * in a large step (exessive delta), either due to fast-movement,
 951                  * autoscroll, laggy UI. _ddropzone copensates for that (see "move into dz" above)
 952                  */
 953                 if (delta_time_axis_view < 0 && (int)_ddropzone - delta_time_axis_view >= (int)_pdropzone) {
 954                         const int dt = delta_time_axis_view + (int)_pdropzone - (int)_ddropzone;
 955                         assert(dt <= 0);
 956                         delta_skip = apply_track_delta(_time_axis_views.size(), dt, 0, true)
 957                                 -_time_axis_views.size() - dt;
 958                 }
 959         }
 960         else if (_last_pointer_time_axis_view < 0) {
 961                 /* Moving out of the zone. Check for hidden tracks at the bottom. */
 962                 delta_skip = apply_track_delta(_time_axis_views.size(), delta_time_axis_view, 0, true)
 963                              -_time_axis_views.size() - delta_time_axis_view;
 964         } else {
 965                 /* calculate hidden tracks that are skipped by the pointer movement */
 966                 delta_skip = apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 967                              - _last_pointer_time_axis_view
 968                              - delta_time_axis_view;
 969         }
 970
 971         /* Verify change in y */
 972         if (!y_movement_allowed (delta_time_axis_view, delta_layer, delta_skip)) {
 973                 /* this y movement is not allowed, so do no y movement this time */
 974                 delta_time_axis_view = 0;
 975                 delta_layer = 0;
 976                 delta_skip = 0;
 977         }
 978
 979         if (x_delta == 0 && (tv && tv->view() && delta_time_axis_view == 0) && delta_layer == 0 && !first_move) {
 980                 /* haven't reached next snap point, and we're not switching
 981                    trackviews nor layers. nothing to do.
 982                 */
 983                 return;
 984         }
 985
 986         typedef map<boost::shared_ptr<Playlist>, double> PlaylistDropzoneMap;
 987         PlaylistDropzoneMap playlist_dropzone_map;
 988         _ndropzone = 0; // number of elements currently in the dropzone
 989
 990         if (first_move) {
 991                 /* sort views by time_axis.
 992                  * This retains track order in the dropzone, regardless
 993                  * of actual selection order
 994                  */
 995                 _views.sort (DraggingViewSorter());
 996
 997                 /* count number of distinct tracks of all regions
 998                  * being dragged, used for dropzone.
 999                  */
1000                 int prev_track = -1;
1001                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1002                         if (i->time_axis_view != prev_track) {
1003                                 prev_track = i->time_axis_view;
1004                                 ++_ntracks;
1005                         }
1006                 }
1007 #ifndef NDEBUG
1008                 int spread =
1009                         _views.back().time_axis_view -
1010                         _views.front().time_axis_view;
1011
1012                 spread -= apply_track_delta (_views.front().time_axis_view, spread, 0, true)
1013                           -  _views.back().time_axis_view;
1014
1015                 printf("Dragging region(s) from %d different track(s), max dist: %d\n", _ntracks, spread);
1016 #endif
1017         }
1018
1019         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1020
1021                 RegionView* rv = i->view;
1022                 double y_delta;
1023
1024                 y_delta = 0;
1025
1026                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1027                         continue;
1028                 }
1029
1030                 if (first_move) {
1031                         rv->drag_start ();
1032
1033                         /* reparent the regionview into a group above all
1034                          * others
1035                          */
1036
1037                         ArdourCanvas::Item* rvg = rv->get_canvas_group();
1038                         Duple rv_canvas_offset = rvg->parent()->canvas_origin ();
1039                         Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
1040                         rv->get_canvas_group()->reparent (_editor->_drag_motion_group);
1041                         /* move the item so that it continues to appear at the
1042                            same location now that its parent has changed.
1043                            */
1044                         rvg->move (rv_canvas_offset - dmg_canvas_offset);
1045                 }
1046
1047                 /* If we have moved tracks, we'll fudge the layer delta so that the
1048                    region gets moved back onto layer 0 on its new track; this avoids
1049                    confusion when dragging regions from non-zero layers onto different
1050                    tracks.
1051                 */
1052                 double this_delta_layer = delta_layer;
1053                 if (delta_time_axis_view != 0) {
1054                         this_delta_layer = - i->layer;
1055                 }
1056
1057                 int this_delta_time_axis_view = apply_track_delta(i->time_axis_view, delta_time_axis_view, delta_skip) - i->time_axis_view;
1058
1059                 int track_index = i->time_axis_view + this_delta_time_axis_view;
1060                 assert(track_index >= 0);
1061
1062                 if (track_index < 0 || track_index >= (int) _time_axis_views.size()) {
1063                         /* Track is in the Dropzone */
1064
1065                         i->time_axis_view = track_index;
1066                         assert(i->time_axis_view >= (int) _time_axis_views.size());
1067                         if (cur_y >= 0) {
1068
1069                                 double yposition = 0;
1070                                 PlaylistDropzoneMap::iterator pdz = playlist_dropzone_map.find (i->view->region()->playlist());
1071                                 rv->set_height (TimeAxisView::preset_height (HeightNormal));
1072                                 ++_ndropzone;
1073
1074                                 /* store index of each new playlist as a negative count, starting at -1 */
1075
1076                                 if (pdz == playlist_dropzone_map.end()) {
1077                                         /* compute where this new track (which doesn't exist yet) will live
1078                                            on the y-axis.
1079                                         */
1080                                         yposition = last_track_bottom_edge; /* where to place the top edge of the regionview */
1081
1082                                         /* How high is this region view ? */
1083
1084                                         boost::optional<ArdourCanvas::Rect> obbox = rv->get_canvas_group()->bounding_box ();
1085                                         ArdourCanvas::Rect bbox;
1086
1087                                         if (obbox) {
1088                                                 bbox = obbox.get ();
1089                                         }
1090
1091                                         last_track_bottom_edge += bbox.height();
1092
1093                                         playlist_dropzone_map.insert (make_pair (i->view->region()->playlist(), yposition));
1094
1095                                 } else {
1096                                         yposition = pdz->second;
1097                                 }
1098
1099                                 /* values are zero or negative, hence the use of min() */
1100                                 y_delta = yposition - rv->get_canvas_group()->canvas_origin().y;
1101                         }
1102
1103                 } else {
1104
1105                         /* The TimeAxisView that this region is now over */
1106                         TimeAxisView* current_tv = _time_axis_views[track_index];
1107
1108                         /* Ensure it is moved from stacked -> expanded if appropriate */
1109                         if (current_tv->view()->layer_display() == Stacked) {
1110                                 current_tv->view()->set_layer_display (Expanded);
1111                         }
1112
1113                         /* We're only allowed to go -ve in layer on Expanded views */
1114                         if (current_tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
1115                                 this_delta_layer = - i->layer;
1116                         }
1117
1118                         /* Set height */
1119                         rv->set_height (current_tv->view()->child_height ());
1120
1121                         /* Update show/hidden status as the region view may have come from a hidden track,
1122                            or have moved to one.
1123                         */
1124                         if (current_tv->hidden ()) {
1125                                 rv->get_canvas_group()->hide ();
1126                         } else {
1127                                 rv->get_canvas_group()->show ();
1128                         }
1129
1130                         /* Update the DraggingView */
1131                         i->time_axis_view = track_index;
1132                         i->layer += this_delta_layer;
1133
1134                         if (_brushing) {
1135                                 _editor->mouse_brush_insert_region (rv, pending_region_position);
1136                         } else {
1137                                 Duple track_origin;
1138
1139                                 /* Get the y coordinate of the top of the track that this region is now over */
1140                                 track_origin = current_tv->canvas_display()->item_to_canvas (track_origin);
1141
1142                                 /* And adjust for the layer that it should be on */
1143                                 StreamView* cv = current_tv->view ();
1144                                 switch (cv->layer_display ()) {
1145                                 case Overlaid:
1146                                         break;
1147                                 case Stacked:
1148                                         track_origin.y += (cv->layers() - i->layer - 1) * cv->child_height ();
1149                                         break;
1150                                 case Expanded:
1151                                         track_origin.y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
1152                                         break;
1153                                 }
1154
1155                                 /* need to get the parent of the regionview
1156                                  * canvas group and get its position in
1157                                  * equivalent coordinate space as the trackview
1158                                  * we are now dragging over.
1159                                  */
1160
1161                                 y_delta = track_origin.y - rv->get_canvas_group()->canvas_origin().y;
1162
1163                         }
1164                 }
1165
1166                 /* Now move the region view */
1167                 rv->move (x_delta, y_delta);
1168
1169         } /* foreach region */
1170
1171         _total_x_delta += x_delta;
1172
1173         if (x_delta != 0 && !_brushing) {
1174                 show_verbose_cursor_time (_last_frame_position);
1175         }
1176
1177         /* keep track of pointer movement */
1178         if (tv) {
1179                 /* the pointer is currently over a time axis view */
1180
1181                 if (_last_pointer_time_axis_view < 0) {
1182                         /* last motion event was not over a time axis view
1183                          * or last y-movement out of the dropzone was not valid
1184                          */
1185                         int dtz = 0;
1186                         if (delta_time_axis_view < 0) {
1187                                 /* in the drop zone, moving up */
1188
1189                                 /* _pdropzone is the last known pointer y-axis position inside the DZ.
1190                                  * We do not use negative _last_pointer_time_axis_view because
1191                                  * the dropzone is "packed" (the actual track offset is ignored)
1192                                  *
1193                                  * As opposed to the actual number
1194                                  * of elements in the dropzone (_ndropzone)
1195                                  * _pdropzone is not constrained. This is necessary
1196                                  * to allow moving multiple regions with y-distance
1197                                  * into the DZ.
1198                                  *
1199                                  * There can be 0 elements in the dropzone,
1200                                  * even though the drag-pointer is inside the DZ.
1201                                  *
1202                                  * example:
1203                                  * [ Audio-track, Midi-track, Audio-track, DZ ]
1204                                  * move regions from both audio tracks at the same time into the
1205                                  * DZ by grabbing the region in the bottom track.
1206                                  */
1207                                 assert(current_pointer_time_axis_view >= 0);
1208                                 dtz = std::min((int)_pdropzone, (int)_ddropzone - delta_time_axis_view);
1209                                 _pdropzone -= dtz;
1210                         }
1211
1212                         /* only move out of the zone if the movement is OK */
1213                         if (_pdropzone == 0 && delta_time_axis_view != 0) {
1214                                 assert(delta_time_axis_view < 0);
1215                                 _last_pointer_time_axis_view = current_pointer_time_axis_view;
1216                                 /* if all logic and maths are correct, there is no need to assign the 'current' pointer.
1217                                  * the current position can be calculated as follows:
1218                                  */
1219                                 // a well placed oofus attack can still throw this off.
1220                                 // likley auto-scroll related, printf() debugging may tell, commented out for now.
1221                                 //assert (current_pointer_time_axis_view == _time_axis_views.size() - dtz + _ddropzone + delta_time_axis_view);
1222                         }
1223                 } else {
1224                         /* last motion event was also over a time axis view */
1225                         _last_pointer_time_axis_view += delta_time_axis_view;
1226                         assert(_last_pointer_time_axis_view >= 0);
1227                 }
1228
1229         } else {
1230
1231                 /* the pointer is not over a time axis view */
1232                 assert ((delta_time_axis_view > 0) || (((int)_pdropzone) >= (delta_skip - delta_time_axis_view)));
1233                 _pdropzone += delta_time_axis_view - delta_skip;
1234                 _last_pointer_time_axis_view = -1; // <0 : we're in the zone, value does not matter.
1235         }
1236
1237         _last_pointer_layer += delta_layer;
1238 }
1239
1240 void
1241 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
1242 {
1243         if (_copy && first_move) {
1244                 if (_x_constrained && !_brushing) {
1245                         _editor->begin_reversible_command (Operations::fixed_time_region_copy);
1246                 } else if (!_brushing) {
1247                         _editor->begin_reversible_command (Operations::region_copy);
1248                 } else if (_brushing) {
1249                         _editor->begin_reversible_command (Operations::drag_region_brush);
1250                 }
1251                 /* duplicate the regionview(s) and region(s) */
1252
1253                 list<DraggingView> new_regionviews;
1254
1255                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1256
1257                         RegionView* rv = i->view;
1258                         AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1259                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1260
1261                         const boost::shared_ptr<const Region> original = rv->region();
1262                         boost::shared_ptr<Region> region_copy = RegionFactory::create (original, true);
1263                         region_copy->set_position (original->position());
1264                         /* need to set this so that the drop zone code can work. This doesn't
1265                            actually put the region into the playlist, but just sets a weak pointer
1266                            to it.
1267                         */
1268                         region_copy->set_playlist (original->playlist());
1269
1270                         RegionView* nrv;
1271                         if (arv) {
1272                                 boost::shared_ptr<AudioRegion> audioregion_copy
1273                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1274
1275                                 nrv = new AudioRegionView (*arv, audioregion_copy);
1276                         } else if (mrv) {
1277                                 boost::shared_ptr<MidiRegion> midiregion_copy
1278                                         = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1279                                 nrv = new MidiRegionView (*mrv, midiregion_copy);
1280                         } else {
1281                                 continue;
1282                         }
1283
1284                         nrv->get_canvas_group()->show ();
1285                         new_regionviews.push_back (DraggingView (nrv, this, i->initial_time_axis_view));
1286
1287                         /* swap _primary to the copy */
1288
1289                         if (rv == _primary) {
1290                                 _primary = nrv;
1291                         }
1292
1293                         /* ..and deselect the one we copied */
1294
1295                         rv->set_selected (false);
1296                 }
1297
1298                 if (!new_regionviews.empty()) {
1299
1300                         /* reflect the fact that we are dragging the copies */
1301
1302                         _views = new_regionviews;
1303
1304                         swap_grab (new_regionviews.front().view->get_canvas_group (), 0, event ? event->motion.time : 0);
1305                 }
1306
1307         } else if (!_copy && first_move) {
1308                 if (_x_constrained && !_brushing) {
1309                         _editor->begin_reversible_command (_("fixed time region drag"));
1310                 } else if (!_brushing) {
1311                         _editor->begin_reversible_command (Operations::region_drag);
1312                 } else if (_brushing) {
1313                         _editor->begin_reversible_command (Operations::drag_region_brush);
1314                 }
1315         }
1316         RegionMotionDrag::motion (event, first_move);
1317 }
1318
1319 void
1320 RegionMotionDrag::finished (GdkEvent *, bool)
1321 {
1322         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1323                 if (!(*i)->view()) {
1324                         continue;
1325                 }
1326
1327                 if ((*i)->view()->layer_display() == Expanded) {
1328                         (*i)->view()->set_layer_display (Stacked);
1329                 }
1330         }
1331 }
1332
1333 void
1334 RegionMoveDrag::finished (GdkEvent* ev, bool movement_occurred)
1335 {
1336         RegionMotionDrag::finished (ev, movement_occurred);
1337
1338         if (!movement_occurred) {
1339
1340                 /* just a click */
1341
1342                 if (was_double_click() && !_views.empty()) {
1343                         DraggingView dv = _views.front();
1344                         dv.view->show_region_editor ();
1345
1346                 }
1347
1348                 return;
1349         }
1350
1351         assert (!_views.empty ());
1352
1353         /* We might have hidden region views so that they weren't visible during the drag
1354            (when they have been reparented).  Now everything can be shown again, as region
1355            views are back in their track parent groups.
1356         */
1357         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1358                 i->view->get_canvas_group()->show ();
1359         }
1360
1361         bool const changed_position = (_last_frame_position != _primary->region()->position());
1362         bool const changed_tracks = (_time_axis_views[_views.front().time_axis_view] != &_views.front().view->get_time_axis_view());
1363         framecnt_t const drag_delta = _primary->region()->position() - _last_frame_position;
1364
1365         if (_copy) {
1366
1367                 finished_copy (
1368                         changed_position,
1369                         changed_tracks,
1370                         drag_delta
1371                         );
1372
1373         } else {
1374
1375                 finished_no_copy (
1376                         changed_position,
1377                         changed_tracks,
1378                         drag_delta
1379                         );
1380
1381         }
1382
1383         _editor->maybe_locate_with_edit_preroll (_editor->get_selection().regions.start());
1384 }
1385
1386 RouteTimeAxisView*
1387 RegionMoveDrag::create_destination_time_axis (boost::shared_ptr<Region> region, TimeAxisView* original)
1388 {
1389         /* Add a new track of the correct type, and return the RouteTimeAxisView that is created to display the
1390            new track.
1391          */
1392
1393         try {
1394                 if (boost::dynamic_pointer_cast<AudioRegion> (region)) {
1395                         list<boost::shared_ptr<AudioTrack> > audio_tracks;
1396                         uint32_t output_chan = region->n_channels();
1397                         if ((Config->get_output_auto_connect() & AutoConnectMaster) && _editor->session()->master_out()) {
1398                                 output_chan =  _editor->session()->master_out()->n_inputs().n_audio();
1399                         }
1400                         audio_tracks = _editor->session()->new_audio_track (region->n_channels(), output_chan, ARDOUR::Normal, 0, 1, region->name());
1401                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (audio_tracks.front());
1402                         if (rtav) {
1403                                 rtav->set_height (original->current_height());
1404                         }
1405                         return rtav;
1406                 } else {
1407                         ChanCount one_midi_port (DataType::MIDI, 1);
1408                         list<boost::shared_ptr<MidiTrack> > midi_tracks;
1409                         midi_tracks = _editor->session()->new_midi_track (one_midi_port, one_midi_port, boost::shared_ptr<ARDOUR::PluginInfo>(), ARDOUR::Normal, 0, 1, region->name());
1410                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (midi_tracks.front());
1411                         if (rtav) {
1412                                 rtav->set_height (original->current_height());
1413                         }
1414                         return rtav;
1415                 }
1416         } catch (...) {
1417                 error << _("Could not create new track after region placed in the drop zone") << endmsg;
1418                 return 0;
1419         }
1420 }
1421
1422 void
1423 RegionMoveDrag::finished_copy (bool const changed_position, bool const /*changed_tracks*/, framecnt_t const drag_delta)
1424 {
1425         RegionSelection new_views;
1426         PlaylistSet modified_playlists;
1427         RouteTimeAxisView* new_time_axis_view = 0;
1428
1429         if (_brushing) {
1430                 /* all changes were made during motion event handlers */
1431
1432                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1433                         delete i->view;
1434                 }
1435
1436                 _editor->commit_reversible_command ();
1437                 return;
1438         }
1439
1440         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1441         PlaylistMapping playlist_mapping;
1442
1443         /* insert the regions into their new playlists */
1444         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1445
1446                 RouteTimeAxisView* dest_rtv = 0;
1447
1448                 if (i->view->region()->locked() || (i->view->region()->video_locked() && !_ignore_video_lock)) {
1449                         continue;
1450                 }
1451
1452                 framepos_t where;
1453
1454                 if (changed_position && !_x_constrained) {
1455                         where = i->view->region()->position() - drag_delta;
1456                 } else {
1457                         where = i->view->region()->position();
1458                 }
1459
1460                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1461                         /* dragged to drop zone */
1462
1463                         PlaylistMapping::iterator pm;
1464
1465                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1466                                 /* first region from this original playlist: create a new track */
1467                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1468                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1469                                 dest_rtv = new_time_axis_view;
1470                         } else {
1471                                 /* we already created a new track for regions from this playlist, use it */
1472                                 dest_rtv = pm->second;
1473                         }
1474                 } else {
1475                         /* destination time axis view is the one we dragged to */
1476                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1477                 }
1478
1479                 if (dest_rtv != 0) {
1480                         RegionView* new_view = insert_region_into_playlist (i->view->region(), dest_rtv, i->layer, where, modified_playlists);
1481                         if (new_view != 0) {
1482                                 new_views.push_back (new_view);
1483                         }
1484                 }
1485
1486                 /* Delete the copy of the view that was used for dragging. Need to play safe with the iterator
1487                    since deletion will automagically remove it from _views, thus invalidating i as an iterator.
1488                  */
1489
1490                 list<DraggingView>::const_iterator next = i;
1491                 ++next;
1492                 delete i->view;
1493                 i = next;
1494         }
1495
1496         /* If we've created new regions either by copying or moving
1497            to a new track, we want to replace the old selection with the new ones
1498         */
1499
1500         if (new_views.size() > 0) {
1501                 _editor->selection->set (new_views);
1502         }
1503
1504         /* write commands for the accumulated diffs for all our modified playlists */
1505         add_stateful_diff_commands_for_playlists (modified_playlists);
1506
1507         _editor->commit_reversible_command ();
1508 }
1509
1510 void
1511 RegionMoveDrag::finished_no_copy (
1512         bool const changed_position,
1513         bool const changed_tracks,
1514         framecnt_t const drag_delta
1515         )
1516 {
1517         RegionSelection new_views;
1518         PlaylistSet modified_playlists;
1519         PlaylistSet frozen_playlists;
1520         set<RouteTimeAxisView*> views_to_update;
1521         RouteTimeAxisView* new_time_axis_view = 0;
1522
1523         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1524         PlaylistMapping playlist_mapping;
1525
1526         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ) {
1527
1528                 RegionView* rv = i->view;
1529                 RouteTimeAxisView* dest_rtv = 0;
1530
1531                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1532                         ++i;
1533                         continue;
1534                 }
1535
1536                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1537                         /* dragged to drop zone */
1538
1539                         PlaylistMapping::iterator pm;
1540
1541                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1542                                 /* first region from this original playlist: create a new track */
1543                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1544                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1545                                 dest_rtv = new_time_axis_view;
1546                         } else {
1547                                 /* we already created a new track for regions from this playlist, use it */
1548                                 dest_rtv = pm->second;
1549                         }
1550
1551                 } else {
1552                         /* destination time axis view is the one we dragged to */
1553                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1554                 }
1555
1556                 assert (dest_rtv);
1557
1558                 double const dest_layer = i->layer;
1559
1560                 views_to_update.insert (dest_rtv);
1561
1562                 framepos_t where;
1563
1564                 if (changed_position && !_x_constrained) {
1565                         where = rv->region()->position() - drag_delta;
1566                 } else {
1567                         where = rv->region()->position();
1568                 }
1569
1570                 if (changed_tracks) {
1571
1572                         /* insert into new playlist */
1573
1574                         RegionView* new_view = insert_region_into_playlist (
1575                                 RegionFactory::create (rv->region (), true), dest_rtv, dest_layer, where, modified_playlists
1576                                 );
1577
1578                         if (new_view == 0) {
1579                                 ++i;
1580                                 continue;
1581                         }
1582
1583                         new_views.push_back (new_view);
1584
1585                         /* remove from old playlist */
1586
1587                         /* the region that used to be in the old playlist is not
1588                            moved to the new one - we use a copy of it. as a result,
1589                            any existing editor for the region should no longer be
1590                            visible.
1591                         */
1592                         rv->hide_region_editor();
1593
1594
1595                         remove_region_from_playlist (rv->region(), i->initial_playlist, modified_playlists);
1596
1597                 } else {
1598
1599                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1600
1601                         /* this movement may result in a crossfade being modified, or a layering change,
1602                            so we need to get undo data from the playlist as well as the region.
1603                         */
1604
1605                         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (playlist);
1606                         if (r.second) {
1607                                 playlist->clear_changes ();
1608                         }
1609
1610                         rv->region()->clear_changes ();
1611
1612                         /*
1613                            motion on the same track. plonk the previously reparented region
1614                            back to its original canvas group (its streamview).
1615                            No need to do anything for copies as they are fake regions which will be deleted.
1616                         */
1617
1618                         rv->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1619                         rv->get_canvas_group()->set_y_position (i->initial_y);
1620                         rv->drag_end ();
1621
1622                         /* just change the model */
1623                         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1624                                 playlist->set_layer (rv->region(), dest_layer);
1625                         }
1626
1627                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
1628
1629                         r = frozen_playlists.insert (playlist);
1630
1631                         if (r.second) {
1632                                 playlist->freeze ();
1633                         }
1634
1635                         rv->region()->set_position (where);
1636                         _editor->session()->add_command (new StatefulDiffCommand (rv->region()));
1637                 }
1638
1639                 if (changed_tracks) {
1640
1641                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1642                            was selected in all of them, then removing it from a playlist will have removed all
1643                            trace of it from _views (i.e. there were N regions selected, we removed 1,
1644                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1645                            corresponding regionview, and _views is now empty).
1646
1647                            This could have invalidated any and all iterators into _views.
1648
1649                            The heuristic we use here is: if the region selection is empty, break out of the loop
1650                            here. if the region selection is not empty, then restart the loop because we know that
1651                            we must have removed at least the region(view) we've just been working on as well as any
1652                            that we processed on previous iterations.
1653
1654                            EXCEPT .... if we are doing a copy drag, then _views hasn't been modified and
1655                            we can just iterate.
1656                         */
1657
1658
1659                         if (_views.empty()) {
1660                                 break;
1661                         } else {
1662                                 i = _views.begin();
1663                         }
1664
1665                 } else {
1666                         ++i;
1667                 }
1668         }
1669
1670         /* If we've created new regions either by copying or moving
1671            to a new track, we want to replace the old selection with the new ones
1672         */
1673
1674         if (new_views.size() > 0) {
1675                 _editor->selection->set (new_views);
1676         }
1677
1678         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1679                 (*p)->thaw();
1680         }
1681
1682         /* write commands for the accumulated diffs for all our modified playlists */
1683         add_stateful_diff_commands_for_playlists (modified_playlists);
1684         /* applies to _brushing */
1685         _editor->commit_reversible_command ();
1686
1687         /* We have futzed with the layering of canvas items on our streamviews.
1688            If any region changed layer, this will have resulted in the stream
1689            views being asked to set up their region views, and all will be well.
1690            If not, we might now have badly-ordered region views.  Ask the StreamViews
1691            involved to sort themselves out, just in case.
1692         */
1693
1694         for (set<RouteTimeAxisView*>::iterator i = views_to_update.begin(); i != views_to_update.end(); ++i) {
1695                 (*i)->view()->playlist_layered ((*i)->track ());
1696         }
1697 }
1698
1699 /** Remove a region from a playlist, clearing the diff history of the playlist first if necessary.
1700  *  @param region Region to remove.
1701  *  @param playlist playlist To remove from.
1702  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1703  *  that clear_changes () is only called once per playlist.
1704  */
1705 void
1706 RegionMoveDrag::remove_region_from_playlist (
1707         boost::shared_ptr<Region> region,
1708         boost::shared_ptr<Playlist> playlist,
1709         PlaylistSet& modified_playlists
1710         )
1711 {
1712         pair<set<boost::shared_ptr<Playlist> >::iterator, bool> r = modified_playlists.insert (playlist);
1713
1714         if (r.second) {
1715                 playlist->clear_changes ();
1716         }
1717
1718         playlist->remove_region (region); // should be no need to ripple; we better already have rippled the playlist in RegionRippleDrag
1719 }
1720
1721
1722 /** Insert a region into a playlist, handling the recovery of the resulting new RegionView, and
1723  *  clearing the playlist's diff history first if necessary.
1724  *  @param region Region to insert.
1725  *  @param dest_rtv Destination RouteTimeAxisView.
1726  *  @param dest_layer Destination layer.
1727  *  @param where Destination position.
1728  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1729  *  that clear_changes () is only called once per playlist.
1730  *  @return New RegionView, or 0 if no insert was performed.
1731  */
1732 RegionView *
1733 RegionMoveDrag::insert_region_into_playlist (
1734         boost::shared_ptr<Region> region,
1735         RouteTimeAxisView* dest_rtv,
1736         layer_t dest_layer,
1737         framecnt_t where,
1738         PlaylistSet& modified_playlists
1739         )
1740 {
1741         boost::shared_ptr<Playlist> dest_playlist = dest_rtv->playlist ();
1742         if (!dest_playlist) {
1743                 return 0;
1744         }
1745
1746         /* arrange to collect the new region view that will be created as a result of our playlist insertion */
1747         _new_region_view = 0;
1748         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &RegionMoveDrag::collect_new_region_view));
1749
1750         /* clear history for the playlist we are about to insert to, provided we haven't already done so */
1751         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (dest_playlist);
1752         if (r.second) {
1753                 dest_playlist->clear_changes ();
1754         }
1755
1756         dest_playlist->add_region (region, where);
1757
1758         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1759                 dest_playlist->set_layer (region, dest_layer);
1760         }
1761
1762         c.disconnect ();
1763
1764         assert (_new_region_view);
1765
1766         return _new_region_view;
1767 }
1768
1769 void
1770 RegionMoveDrag::collect_new_region_view (RegionView* rv)
1771 {
1772         _new_region_view = rv;
1773 }
1774
1775 void
1776 RegionMoveDrag::add_stateful_diff_commands_for_playlists (PlaylistSet const & playlists)
1777 {
1778         for (PlaylistSet::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
1779                 StatefulDiffCommand* c = new StatefulDiffCommand (*i);
1780                 if (!c->empty()) {
1781                         _editor->session()->add_command (c);
1782                 } else {
1783                         delete c;
1784                 }
1785         }
1786 }
1787
1788
1789 void
1790 RegionMoveDrag::aborted (bool movement_occurred)
1791 {
1792         if (_copy) {
1793
1794                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1795                         list<DraggingView>::const_iterator next = i;
1796                         ++next;
1797                         delete i->view;
1798                         i = next;
1799                 }
1800
1801                 _views.clear ();
1802
1803         } else {
1804                 RegionMotionDrag::aborted (movement_occurred);
1805         }
1806 }
1807
1808 void
1809 RegionMotionDrag::aborted (bool)
1810 {
1811         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1812
1813                 StreamView* sview = (*i)->view();
1814
1815                 if (sview) {
1816                         if (sview->layer_display() == Expanded) {
1817                                 sview->set_layer_display (Stacked);
1818                         }
1819                 }
1820         }
1821
1822         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1823                 RegionView* rv = i->view;
1824                 TimeAxisView* tv = &(rv->get_time_axis_view ());
1825                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1826                 assert (rtv);
1827                 rv->get_canvas_group()->reparent (rtv->view()->canvas_item());
1828                 rv->get_canvas_group()->set_y_position (0);
1829                 rv->drag_end ();
1830                 rv->move (-_total_x_delta, 0);
1831                 rv->set_height (rtv->view()->child_height ());
1832         }
1833 }
1834
1835 /** @param b true to brush, otherwise false.
1836  *  @param c true to make copies of the regions being moved, otherwise false.
1837  */
1838 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1839         : RegionMotionDrag (e, i, p, v, b)
1840         , _copy (c)
1841         , _new_region_view (0)
1842 {
1843         DEBUG_TRACE (DEBUG::Drags, "New RegionMoveDrag\n");
1844
1845         double speed = 1;
1846         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&_primary->get_time_axis_view ());
1847         if (rtv && rtv->is_track()) {
1848                 speed = rtv->track()->speed ();
1849         }
1850
1851         _last_frame_position = static_cast<framepos_t> (_primary->region()->position() / speed);
1852 }
1853
1854 void
1855 RegionMoveDrag::setup_pointer_frame_offset ()
1856 {
1857         _pointer_frame_offset = raw_grab_frame() - _last_frame_position;
1858 }
1859
1860 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, framepos_t pos)
1861         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1862 {
1863         DEBUG_TRACE (DEBUG::Drags, "New RegionInsertDrag\n");
1864
1865         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1866                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1867
1868         _primary = v->view()->create_region_view (r, false, false);
1869
1870         _primary->get_canvas_group()->show ();
1871         _primary->set_position (pos, 0);
1872         _views.push_back (DraggingView (_primary, this, v));
1873
1874         _last_frame_position = pos;
1875
1876         _item = _primary->get_canvas_group ();
1877 }
1878
1879 void
1880 RegionInsertDrag::finished (GdkEvent *, bool)
1881 {
1882         int pos = _views.front().time_axis_view;
1883         assert(pos >= 0 && pos < (int)_time_axis_views.size());
1884
1885         RouteTimeAxisView* dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[pos]);
1886
1887         _primary->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1888         _primary->get_canvas_group()->set_y_position (0);
1889
1890         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1891
1892         _editor->begin_reversible_command (Operations::insert_region);
1893         playlist->clear_changes ();
1894         playlist->add_region (_primary->region (), _last_frame_position);
1895
1896         // Mixbus doesn't seem to ripple when inserting regions from the list: should we? yes, probably
1897         if (Config->get_edit_mode() == Ripple) {
1898                 playlist->ripple (_last_frame_position, _primary->region()->length(), _primary->region());
1899         }
1900
1901         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1902         _editor->commit_reversible_command ();
1903
1904         delete _primary;
1905         _primary = 0;
1906         _views.clear ();
1907 }
1908
1909 void
1910 RegionInsertDrag::aborted (bool)
1911 {
1912         delete _primary;
1913         _primary = 0;
1914         _views.clear ();
1915 }
1916
1917 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1918         : RegionMoveDrag (e, i, p, v, false, false)
1919 {
1920         DEBUG_TRACE (DEBUG::Drags, "New RegionSpliceDrag\n");
1921 }
1922
1923 struct RegionSelectionByPosition {
1924         bool operator() (RegionView*a, RegionView* b) {
1925                 return a->region()->position () < b->region()->position();
1926         }
1927 };
1928
1929 void
1930 RegionSpliceDrag::motion (GdkEvent* event, bool)
1931 {
1932         /* Which trackview is this ? */
1933
1934         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
1935         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1936
1937         /* The region motion is only processed if the pointer is over
1938            an audio track.
1939         */
1940
1941         if (!tv || !tv->is_track()) {
1942                 /* To make sure we hide the verbose canvas cursor when the mouse is
1943                    not held over an audio track.
1944                 */
1945                 _editor->verbose_cursor()->hide ();
1946                 return;
1947         } else {
1948                 _editor->verbose_cursor()->show ();
1949         }
1950
1951         int dir;
1952
1953         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1954                 dir = 1;
1955         } else {
1956                 dir = -1;
1957         }
1958
1959         RegionSelection copy;
1960         _editor->selection->regions.by_position(copy);
1961
1962         framepos_t const pf = adjusted_current_frame (event);
1963
1964         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1965
1966                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1967
1968                 if (!atv) {
1969                         continue;
1970                 }
1971
1972                 boost::shared_ptr<Playlist> playlist;
1973
1974                 if ((playlist = atv->playlist()) == 0) {
1975                         continue;
1976                 }
1977
1978                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1979                         continue;
1980                 }
1981
1982                 if (dir > 0) {
1983                         if (pf < (*i)->region()->last_frame() + 1) {
1984                                 continue;
1985                         }
1986                 } else {
1987                         if (pf > (*i)->region()->first_frame()) {
1988                                 continue;
1989                         }
1990                 }
1991
1992
1993                 playlist->shuffle ((*i)->region(), dir);
1994         }
1995 }
1996
1997 void
1998 RegionSpliceDrag::finished (GdkEvent* event, bool movement_occurred)
1999 {
2000         RegionMoveDrag::finished (event, movement_occurred);
2001 }
2002
2003 void
2004 RegionSpliceDrag::aborted (bool)
2005 {
2006         /* XXX: TODO */
2007 }
2008
2009 /***
2010  * ripple mode...
2011  */
2012
2013 void
2014 RegionRippleDrag::add_all_after_to_views(TimeAxisView *tav, framepos_t where, const RegionSelection &exclude, bool drag_in_progress)
2015 {
2016
2017         boost::shared_ptr<RegionList> rl = tav->playlist()->regions_with_start_within (Evoral::Range<framepos_t>(where, max_framepos));
2018
2019         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(tav);
2020         RegionSelection to_ripple;
2021         for (RegionList::iterator i = rl->begin(); i != rl->end(); ++i) {
2022                 if ((*i)->position() >= where) {
2023                         to_ripple.push_back (rtv->view()->find_view(*i));
2024                 }
2025         }
2026
2027         for (RegionSelection::iterator i = to_ripple.begin(); i != to_ripple.end(); ++i) {
2028                 if (!exclude.contains (*i)) {
2029                         // the selection has already been added to _views
2030
2031                         if (drag_in_progress) {
2032                                 // do the same things that RegionMotionDrag::motion does when
2033                                 // first_move is true, for the region views that we're adding
2034                                 // to _views this time
2035
2036                                 (*i)->drag_start();
2037                                 ArdourCanvas::Item* rvg = (*i)->get_canvas_group();
2038                                 Duple rv_canvas_offset = rvg->item_to_canvas (Duple (0,0));
2039                                 Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
2040                                 rvg->reparent (_editor->_drag_motion_group);
2041
2042                                 // we only need to move in the y direction
2043                                 Duple fudge = rv_canvas_offset - dmg_canvas_offset;
2044                                 fudge.x = 0;
2045                                 rvg->move (fudge);
2046
2047                         }
2048                         _views.push_back (DraggingView (*i, this, tav));
2049                 }
2050         }
2051 }
2052
2053 void
2054 RegionRippleDrag::remove_unselected_from_views(framecnt_t amount, bool move_regions)
2055 {
2056
2057         for (std::list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ) {
2058                 // we added all the regions after the selection
2059
2060                 std::list<DraggingView>::iterator to_erase = i++;
2061                 if (!_editor->selection->regions.contains (to_erase->view)) {
2062                         // restore the non-selected regions to their original playlist & positions,
2063                         // and then ripple them back by the length of the regions that were dragged away
2064                         // do the same things as RegionMotionDrag::aborted
2065
2066                         RegionView *rv = to_erase->view;
2067                         TimeAxisView* tv = &(rv->get_time_axis_view ());
2068                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
2069                         assert (rtv);
2070
2071                         // plonk them back onto their own track
2072                         rv->get_canvas_group()->reparent(rtv->view()->canvas_item());
2073                         rv->get_canvas_group()->set_y_position (0);
2074                         rv->drag_end ();
2075
2076                         if (move_regions) {
2077                                 // move the underlying region to match the view
2078                                 rv->region()->set_position (rv->region()->position() + amount);
2079                         } else {
2080                                 // restore the view to match the underlying region's original position
2081                                 rv->move(-amount, 0);   // second parameter is y delta - seems 0 is OK
2082                         }
2083
2084                         rv->set_height (rtv->view()->child_height ());
2085                         _views.erase (to_erase);
2086                 }
2087         }
2088 }
2089
2090 bool
2091 RegionRippleDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
2092 {
2093         if (RegionMotionDrag::y_movement_allowed (delta_track, delta_layer, skip_invisible)) {
2094                 if (delta_track) {
2095                         return allow_moves_across_tracks;
2096                 } else {
2097                         return true;
2098                 }
2099         }
2100         return false;
2101 }
2102
2103 RegionRippleDrag::RegionRippleDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2104         : RegionMoveDrag (e, i, p, v, false, false)
2105 {
2106         DEBUG_TRACE (DEBUG::Drags, "New RegionRippleDrag\n");
2107         // compute length of selection
2108         RegionSelection selected_regions = _editor->selection->regions;
2109         selection_length = selected_regions.end_frame() - selected_regions.start();
2110
2111         // we'll only allow dragging to another track in ripple mode if all the regions
2112         // being dragged start off on the same track
2113         allow_moves_across_tracks = (selected_regions.playlists().size() == 1);
2114         prev_tav = NULL;
2115         prev_amount = 0;
2116         exclude = new RegionList;
2117         for (RegionSelection::iterator i =selected_regions.begin(); i != selected_regions.end(); ++i) {
2118                 exclude->push_back((*i)->region());
2119         }
2120
2121         // also add regions before start of selection to exclude, to be consistent with how Mixbus does ripple
2122         RegionSelection copy;
2123         selected_regions.by_position(copy); // get selected regions sorted by position into copy
2124
2125         std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = copy.playlists();
2126         std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2127
2128         for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2129                 // find ripple start point on each applicable playlist
2130                 RegionView *first_selected_on_this_track = NULL;
2131                 for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
2132                         if ((*i)->region()->playlist() == (*pi)) {
2133                                 // region is on this playlist - it's the first, because they're sorted
2134                                 first_selected_on_this_track = *i;
2135                                 break;
2136                         }
2137                 }
2138                 assert (first_selected_on_this_track); // we should always find the region in one of the playlists...
2139                 add_all_after_to_views (
2140                                 &first_selected_on_this_track->get_time_axis_view(),
2141                                 first_selected_on_this_track->region()->position(),
2142                                 selected_regions, false);
2143         }
2144
2145         if (allow_moves_across_tracks) {
2146                 orig_tav = &(*selected_regions.begin())->get_time_axis_view();
2147         } else {
2148                 orig_tav = NULL;
2149         }
2150
2151 }
2152
2153 void
2154 RegionRippleDrag::motion (GdkEvent* event, bool first_move)
2155 {
2156         /* Which trackview is this ? */
2157
2158         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
2159         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
2160
2161         /* The region motion is only processed if the pointer is over
2162            an audio track.
2163          */
2164
2165         if (!tv || !tv->is_track()) {
2166                 /* To make sure we hide the verbose canvas cursor when the mouse is
2167                    not held over an audiotrack.
2168                  */
2169                 _editor->verbose_cursor()->hide ();
2170                 return;
2171         }
2172
2173         framepos_t where = adjusted_current_frame (event);
2174         assert (where >= 0);
2175         framepos_t after;
2176         double delta = compute_x_delta (event, &after);
2177
2178         framecnt_t amount = _editor->pixel_to_sample (delta);
2179
2180         if (allow_moves_across_tracks) {
2181                 // all the originally selected regions were on the same track
2182
2183                 framecnt_t adjust = 0;
2184                 if (prev_tav && tv != prev_tav) {
2185                         // dragged onto a different track
2186                         // remove the unselected regions from _views, restore them to their original positions
2187                         // and add the regions after the drop point on the new playlist to _views instead.
2188                         // undo the effect of rippling the previous playlist, and include the effect of removing
2189                         // the dragged region(s) from this track
2190
2191                         remove_unselected_from_views (prev_amount, false);
2192                         // ripple previous playlist according to the regions that have been removed onto the new playlist
2193                         prev_tav->playlist()->ripple(prev_position, -selection_length, exclude);
2194                         prev_amount = 0;
2195
2196                         // move just the selected regions
2197                         RegionMoveDrag::motion(event, first_move);
2198
2199                         // ensure that the ripple operation on the new playlist inserts selection_length time
2200                         adjust = selection_length;
2201                         // ripple the new current playlist
2202                         tv->playlist()->ripple (where, amount+adjust, exclude);
2203
2204                         // add regions after point where drag entered this track to subsequent ripples
2205                         add_all_after_to_views (tv, where, _editor->selection->regions, true);
2206
2207                 } else {
2208                         // motion on same track
2209                         RegionMoveDrag::motion(event, first_move);
2210                 }
2211                 prev_tav = tv;
2212
2213                 // remember what we've done to this playlist so we can undo it if the selection is dragged to another track
2214                 prev_position = where;
2215         } else {
2216                 // selection encompasses multiple tracks - just drag
2217                 // cross-track drags are forbidden
2218                 RegionMoveDrag::motion(event, first_move);
2219         }
2220
2221         if (!_x_constrained) {
2222                 prev_amount += amount;
2223         }
2224
2225         _last_frame_position = after;
2226 }
2227
2228 void
2229 RegionRippleDrag::finished (GdkEvent* event, bool movement_occurred)
2230 {
2231         if (!movement_occurred) {
2232
2233                 /* just a click */
2234
2235                 if (was_double_click() && !_views.empty()) {
2236                         DraggingView dv = _views.front();
2237                         dv.view->show_region_editor ();
2238
2239                 }
2240
2241                 return;
2242         }
2243
2244         _editor->begin_reversible_command(_("Ripple drag"));
2245
2246         // remove the regions being rippled from the dragging view, updating them to
2247         // their new positions
2248         remove_unselected_from_views (prev_amount, true);
2249
2250         if (allow_moves_across_tracks) {
2251                 if (orig_tav) {
2252                         // if regions were dragged across tracks, we've rippled any later
2253                         // regions on the track the regions were dragged off, so we need
2254                         // to add the original track to the undo record
2255                         orig_tav->playlist()->clear_changes();
2256                         vector<Command*> cmds;
2257                         orig_tav->playlist()->rdiff (cmds);
2258                         _editor->session()->add_commands (cmds);
2259                 }
2260                 if (prev_tav && prev_tav != orig_tav) {
2261                         prev_tav->playlist()->clear_changes();
2262                         vector<Command*> cmds;
2263                         prev_tav->playlist()->rdiff (cmds);
2264                         _editor->session()->add_commands (cmds);
2265                 }
2266         } else {
2267                 // selection spanned multiple tracks - all will need adding to undo record
2268
2269                 std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = _editor->selection->regions.playlists();
2270                 std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2271
2272                 for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2273                         (*pi)->clear_changes();
2274                         vector<Command*> cmds;
2275                         (*pi)->rdiff (cmds);
2276                         _editor->session()->add_commands (cmds);
2277                 }
2278         }
2279
2280         // other modified playlists are added to undo by RegionMoveDrag::finished()
2281         RegionMoveDrag::finished (event, movement_occurred);
2282         _editor->commit_reversible_command();
2283 }
2284
2285 void
2286 RegionRippleDrag::aborted (bool movement_occurred)
2287 {
2288         RegionMoveDrag::aborted (movement_occurred);
2289         _views.clear ();
2290 }
2291
2292
2293 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
2294         : Drag (e, i),
2295           _view (dynamic_cast<MidiTimeAxisView*> (v))
2296 {
2297         DEBUG_TRACE (DEBUG::Drags, "New RegionCreateDrag\n");
2298
2299         assert (_view);
2300 }
2301
2302 void
2303 RegionCreateDrag::motion (GdkEvent* event, bool first_move)
2304 {
2305         if (first_move) {
2306                 _editor->begin_reversible_command (_("create region"));
2307                 _region = add_midi_region (_view, false);
2308                 _view->playlist()->freeze ();
2309         } else {
2310                 if (_region) {
2311                         framepos_t const f = adjusted_current_frame (event);
2312                         if (f < grab_frame()) {
2313                                 _region->set_initial_position (f);
2314                         }
2315
2316                         /* Don't use a zero-length region, and subtract 1 frame from the snapped length
2317                            so that if this region is duplicated, its duplicate starts on
2318                            a snap point rather than 1 frame after a snap point.  Otherwise things get
2319                            a bit confusing as if a region starts 1 frame after a snap point, one cannot
2320                            place snapped notes at the start of the region.
2321                         */
2322
2323                         framecnt_t const len = (framecnt_t) fabs ((double)(f - grab_frame () - 1));
2324                         _region->set_length (len < 1 ? 1 : len);
2325                 }
2326         }
2327 }
2328
2329 void
2330 RegionCreateDrag::finished (GdkEvent*, bool movement_occurred)
2331 {
2332         if (!movement_occurred) {
2333                 add_midi_region (_view, true);
2334         } else {
2335                 _view->playlist()->thaw ();
2336                 _editor->commit_reversible_command();
2337         }
2338 }
2339
2340 void
2341 RegionCreateDrag::aborted (bool)
2342 {
2343         if (_region) {
2344                 _view->playlist()->thaw ();
2345         }
2346
2347         /* XXX */
2348 }
2349
2350 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
2351         : Drag (e, i)
2352         , region (0)
2353         , relative (false)
2354         , at_front (true)
2355         , _was_selected (false)
2356         , _snap_delta (0)
2357 {
2358         DEBUG_TRACE (DEBUG::Drags, "New NoteResizeDrag\n");
2359 }
2360
2361 void
2362 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*ignored*/)
2363 {
2364         Gdk::Cursor* cursor;
2365         NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2366         assert (cnote);
2367         float x_fraction = cnote->mouse_x_fraction ();
2368
2369         if (x_fraction > 0.0 && x_fraction < 0.25) {
2370                 cursor = _editor->cursors()->left_side_trim;
2371                 at_front = true;
2372         } else  {
2373                 cursor = _editor->cursors()->right_side_trim;
2374                 at_front = false;
2375         }
2376
2377         Drag::start_grab (event, cursor);
2378
2379         region = &cnote->region_view();
2380
2381         double temp;
2382         temp = region->snap_to_pixel (cnote->x0 (), true);
2383         _snap_delta = temp - cnote->x0 ();
2384
2385         _item->grab ();
2386
2387         if (event->motion.state & ArdourKeyboard::note_size_relative_modifier ()) {
2388                 relative = false;
2389         } else {
2390                 relative = true;
2391         }
2392         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2393         if (ms.size() > 1) {
2394                 /* has to be relative, may make no sense otherwise */
2395                 relative = true;
2396         }
2397
2398         if (!(_was_selected = cnote->selected())) {
2399
2400                 /* tertiary-click means extend selection - we'll do that on button release,
2401                    so don't add it here, because otherwise we make it hard to figure
2402                    out the "extend-to" range.
2403                 */
2404
2405                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2406
2407                 if (!extend) {
2408                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2409
2410                         if (add) {
2411                                 region->note_selected (cnote, true);
2412                         } else {
2413                                 _editor->get_selection().clear_points();
2414                                 region->unique_select (cnote);
2415                         }
2416                 }
2417         }
2418 }
2419
2420 void
2421 NoteResizeDrag::motion (GdkEvent* event, bool first_move)
2422 {
2423         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2424         if (first_move) {
2425                 _editor->begin_reversible_command (_("resize notes"));
2426
2427                 for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
2428                         MidiRegionSelection::iterator next;
2429                         next = r;
2430                         ++next;
2431                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2432                         if (mrv) {
2433                                 mrv->begin_resizing (at_front);
2434                         }
2435                         r = next;
2436                 }
2437         }
2438
2439         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2440                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2441                 assert (nb);
2442                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2443                 if (mrv) {
2444                         double sd = 0.0;
2445                         bool snap = true;
2446                         bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2447
2448                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2449                                 if (_editor->snap_mode () != SnapOff) {
2450                                         snap = false;
2451                                 }
2452                         } else {
2453                                 if (_editor->snap_mode () == SnapOff) {
2454                                         snap = false;
2455                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2456                                         if (apply_snap_delta) {
2457                                                 snap = true;
2458                                         }
2459                                 }
2460                         }
2461
2462                         if (apply_snap_delta) {
2463                                 sd = _snap_delta;
2464                         }
2465
2466                         mrv->update_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2467                 }
2468         }
2469 }
2470
2471 void
2472 NoteResizeDrag::finished (GdkEvent* event, bool movement_occurred)
2473 {
2474         if (!movement_occurred) {
2475                 /* no motion - select note */
2476                 NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2477                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
2478                     _editor->current_mouse_mode() == Editing::MouseDraw) {
2479
2480                         bool changed = false;
2481
2482                         if (_was_selected) {
2483                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2484                                 if (add) {
2485                                         region->note_deselected (cnote);
2486                                         changed = true;
2487                                 } else {
2488                                         _editor->get_selection().clear_points();
2489                                         region->unique_select (cnote);
2490                                         changed = true;
2491                                 }
2492                         } else {
2493                                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2494                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2495
2496                                 if (!extend && !add && region->selection_size() > 1) {
2497                                         _editor->get_selection().clear_points();
2498                                         region->unique_select (cnote);
2499                                         changed = true;
2500                                 } else if (extend) {
2501                                         region->note_selected (cnote, true, true);
2502                                         changed = true;
2503                                 } else {
2504                                         /* it was added during button press */
2505                                         changed = true;
2506                                 }
2507                         }
2508
2509                         if (changed) {
2510                                 _editor->begin_reversible_selection_op(X_("Resize Select Note Release"));
2511                                 _editor->commit_reversible_selection_op();
2512                         }
2513                 }
2514
2515                 return;
2516         }
2517
2518         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2519         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2520                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2521                 assert (nb);
2522                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2523                 double sd = 0.0;
2524                 bool snap = true;
2525                 bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2526                 if (mrv) {
2527                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2528                                 if (_editor->snap_mode () != SnapOff) {
2529                                         snap = false;
2530                                 }
2531                         } else {
2532                                 if (_editor->snap_mode () == SnapOff) {
2533                                         snap = false;
2534                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2535                                         if (apply_snap_delta) {
2536                                                 snap = true;
2537                                         }
2538                                 }
2539                         }
2540
2541                         if (apply_snap_delta) {
2542                                 sd = _snap_delta;
2543                         }
2544
2545                         mrv->commit_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2546                 }
2547         }
2548
2549         _editor->commit_reversible_command ();
2550 }
2551
2552 void
2553 NoteResizeDrag::aborted (bool)
2554 {
2555         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2556         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2557                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2558                 if (mrv) {
2559                         mrv->abort_resizing ();
2560                 }
2561         }
2562 }
2563
2564 AVDraggingView::AVDraggingView (RegionView* v)
2565         : view (v)
2566 {
2567         initial_position = v->region()->position ();
2568 }
2569
2570 VideoTimeLineDrag::VideoTimeLineDrag (Editor* e, ArdourCanvas::Item* i)
2571         : Drag (e, i)
2572 {
2573         DEBUG_TRACE (DEBUG::Drags, "New VideoTimeLineDrag\n");
2574
2575         RegionSelection rs;
2576         TrackViewList empty;
2577         empty.clear();
2578         _editor->get_regions_after(rs, (framepos_t) 0, empty);
2579         std::list<RegionView*> views = rs.by_layer();
2580
2581         _stuck = false;
2582         for (list<RegionView*>::iterator i = views.begin(); i != views.end(); ++i) {
2583                 RegionView* rv = (*i);
2584                 if (!rv->region()->video_locked()) {
2585                         continue;
2586                 }
2587                 if (rv->region()->locked()) {
2588                         _stuck = true;
2589                 }
2590                 _views.push_back (AVDraggingView (rv));
2591         }
2592 }
2593
2594 void
2595 VideoTimeLineDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2596 {
2597         Drag::start_grab (event);
2598         if (_editor->session() == 0) {
2599                 return;
2600         }
2601
2602         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
2603                 _stuck = false;
2604                 _views.clear();
2605         }
2606
2607         if (_stuck) {
2608                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2609                 return;
2610         }
2611
2612         _startdrag_video_offset=ARDOUR_UI::instance()->video_timeline->get_offset();
2613         _max_backwards_drag = (
2614                           ARDOUR_UI::instance()->video_timeline->get_duration()
2615                         + ARDOUR_UI::instance()->video_timeline->get_offset()
2616                         - ceil(ARDOUR_UI::instance()->video_timeline->get_apv())
2617                         );
2618
2619         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2620                 if (i->initial_position < _max_backwards_drag || _max_backwards_drag < 0) {
2621                         _max_backwards_drag = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv (i->initial_position);
2622                 }
2623         }
2624         DEBUG_TRACE (DEBUG::Drags, string_compose("VideoTimeLineDrag: max backwards-drag: %1\n", _max_backwards_drag));
2625
2626         char buf[128];
2627         Timecode::Time timecode;
2628         _editor->session()->sample_to_timecode(abs(_startdrag_video_offset), timecode, true /* use_offset */, false /* use_subframes */ );
2629         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);
2630         show_verbose_cursor_text (buf);
2631 }
2632
2633 void
2634 VideoTimeLineDrag::motion (GdkEvent* event, bool first_move)
2635 {
2636         if (_editor->session() == 0) {
2637                 return;
2638         }
2639         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2640                 return;
2641         }
2642         if (_stuck) {
2643                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2644                 return;
2645         }
2646
2647         framecnt_t dt = adjusted_current_frame (event) - raw_grab_frame() + _pointer_frame_offset;
2648         dt = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(_startdrag_video_offset+dt) - _startdrag_video_offset;
2649
2650         if (_max_backwards_drag >= 0 && dt <= - _max_backwards_drag) {
2651                 dt = - _max_backwards_drag;
2652         }
2653
2654         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset+dt);
2655         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2656
2657         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2658                 RegionView* rv = i->view;
2659                 DEBUG_TRACE (DEBUG::Drags, string_compose("SHIFT REGION at %1 by %2\n", i->initial_position, dt));
2660                 if (first_move) {
2661                         rv->drag_start ();
2662                         rv->region()->clear_changes ();
2663                         rv->region()->suspend_property_changes();
2664                 }
2665                 rv->region()->set_position(i->initial_position + dt);
2666                 rv->region_changed(ARDOUR::Properties::position);
2667         }
2668
2669         const framepos_t offset = ARDOUR_UI::instance()->video_timeline->get_offset();
2670         Timecode::Time timecode;
2671         Timecode::Time timediff;
2672         char buf[128];
2673         _editor->session()->sample_to_timecode(abs(offset), timecode, true /* use_offset */, false /* use_subframes */ );
2674         _editor->session()->sample_to_timecode(abs(dt), timediff, false /* use_offset */, false /* use_subframes */ );
2675         snprintf (buf, sizeof (buf),
2676                         "%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2677                         "\n%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2678                         , _("Video Start:"),
2679                                 (offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames
2680                         , _("Diff:"),
2681                                 (dt<0?'-':' '), timediff.hours, timediff.minutes, timediff.seconds, timediff.frames
2682                                 );
2683         show_verbose_cursor_text (buf);
2684 }
2685
2686 void
2687 VideoTimeLineDrag::finished (GdkEvent * /*event*/, bool movement_occurred)
2688 {
2689         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2690                 return;
2691         }
2692         if (_stuck) {
2693                 return;
2694         }
2695
2696         if (!movement_occurred || ! _editor->session()) {
2697                 return;
2698         }
2699
2700         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2701
2702         _editor->begin_reversible_command (_("Move Video"));
2703
2704         XMLNode &before = ARDOUR_UI::instance()->video_timeline->get_state();
2705         ARDOUR_UI::instance()->video_timeline->save_undo();
2706         XMLNode &after = ARDOUR_UI::instance()->video_timeline->get_state();
2707         _editor->session()->add_command(new MementoCommand<VideoTimeLine>(*(ARDOUR_UI::instance()->video_timeline), &before, &after));
2708
2709         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2710                 i->view->drag_end();
2711                 i->view->region()->resume_property_changes ();
2712
2713                 _editor->session()->add_command (new StatefulDiffCommand (i->view->region()));
2714         }
2715
2716         _editor->session()->maybe_update_session_range(
2717                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset(), (ARDOUR::frameoffset_t) 0),
2718                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset() + ARDOUR_UI::instance()->video_timeline->get_duration(), (ARDOUR::frameoffset_t) 0)
2719                         );
2720
2721
2722         _editor->commit_reversible_command ();
2723 }
2724
2725 void
2726 VideoTimeLineDrag::aborted (bool)
2727 {
2728         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2729                 return;
2730         }
2731         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset);
2732         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2733
2734         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2735                 i->view->region()->resume_property_changes ();
2736                 i->view->region()->set_position(i->initial_position);
2737         }
2738 }
2739
2740 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool preserve_fade_anchor)
2741         : RegionDrag (e, i, p, v)
2742         , _operation (StartTrim)
2743         , _preserve_fade_anchor (preserve_fade_anchor)
2744         , _jump_position_when_done (false)
2745 {
2746         DEBUG_TRACE (DEBUG::Drags, "New TrimDrag\n");
2747 }
2748
2749 void
2750 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2751 {
2752         double speed = 1.0;
2753         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2754         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2755
2756         if (tv && tv->is_track()) {
2757                 speed = tv->track()->speed();
2758         }
2759
2760         framepos_t const region_start = (framepos_t) (_primary->region()->position() / speed);
2761         framepos_t const region_end = (framepos_t) (_primary->region()->last_frame() / speed);
2762         framecnt_t const region_length = (framecnt_t) (_primary->region()->length() / speed);
2763
2764         framepos_t const pf = adjusted_current_frame (event);
2765         setup_snap_delta (region_start);
2766
2767         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_contents_modifier ())) {
2768                 /* Move the contents of the region around without changing the region bounds */
2769                 _operation = ContentsTrim;
2770                 Drag::start_grab (event, _editor->cursors()->trimmer);
2771         } else {
2772                 /* These will get overridden for a point trim.*/
2773                 if (pf < (region_start + region_length/2)) {
2774                         /* closer to front */
2775                         _operation = StartTrim;
2776                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2777                                 Drag::start_grab (event, _editor->cursors()->anchored_left_side_trim);
2778                         } else {
2779                                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
2780                         }
2781                 } else {
2782                         /* closer to end */
2783                         _operation = EndTrim;
2784                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2785                                 Drag::start_grab (event, _editor->cursors()->anchored_right_side_trim);
2786                         } else {
2787                                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
2788                         }
2789                 }
2790         }
2791         /* jump trim disabled for now
2792         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::trim_jump_modifier ())) {
2793                 _jump_position_when_done = true;
2794         }
2795         */
2796
2797         switch (_operation) {
2798         case StartTrim:
2799                 show_verbose_cursor_time (region_start);
2800                 break;
2801         case EndTrim:
2802                 show_verbose_cursor_duration (region_start, region_end);
2803                 break;
2804         case ContentsTrim:
2805                 show_verbose_cursor_time (pf);
2806                 break;
2807         }
2808
2809         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2810                 i->view->region()->suspend_property_changes ();
2811         }
2812 }
2813
2814 void
2815 TrimDrag::motion (GdkEvent* event, bool first_move)
2816 {
2817         RegionView* rv = _primary;
2818
2819         double speed = 1.0;
2820         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2821         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2822         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
2823         frameoffset_t frame_delta = 0;
2824
2825         if (tv && tv->is_track()) {
2826                 speed = tv->track()->speed();
2827         }
2828         framecnt_t adj_frame = adjusted_frame (_drags->current_pointer_frame () + snap_delta (event->button.state), event, true);
2829         framecnt_t dt = adj_frame - raw_grab_frame () + _pointer_frame_offset - snap_delta (event->button.state);
2830
2831         if (first_move) {
2832
2833                 string trim_type;
2834
2835                 switch (_operation) {
2836                 case StartTrim:
2837                         trim_type = "Region start trim";
2838                         break;
2839                 case EndTrim:
2840                         trim_type = "Region end trim";
2841                         break;
2842                 case ContentsTrim:
2843                         trim_type = "Region content trim";
2844                         break;
2845                 default:
2846                         assert(0);
2847                         break;
2848                 }
2849
2850                 _editor->begin_reversible_command (trim_type);
2851
2852                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2853                         RegionView* rv = i->view;
2854                         rv->enable_display (false);
2855                         rv->region()->playlist()->clear_owned_changes ();
2856
2857                         if (_operation == StartTrim) {
2858                                 rv->trim_front_starting ();
2859                         }
2860
2861                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (rv);
2862
2863                         if (arv) {
2864                                 arv->temporarily_hide_envelope ();
2865                                 arv->drag_start ();
2866                         }
2867
2868                         boost::shared_ptr<Playlist> pl = rv->region()->playlist();
2869                         insert_result = _editor->motion_frozen_playlists.insert (pl);
2870
2871                         if (insert_result.second) {
2872                                 pl->freeze();
2873                         }
2874                 }
2875         }
2876
2877         bool non_overlap_trim = false;
2878
2879         if (event && Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::trim_overlap_modifier ())) {
2880                 non_overlap_trim = true;
2881         }
2882
2883         /* contstrain trim to fade length */
2884         if (_preserve_fade_anchor) {
2885                 switch (_operation) {
2886                         case StartTrim:
2887                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2888                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2889                                         if (!arv) continue;
2890                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2891                                         if (ar->locked()) continue;
2892                                         framecnt_t len = ar->fade_in()->back()->when;
2893                                         if (len < dt) dt = min(dt, len);
2894                                 }
2895                                 break;
2896                         case EndTrim:
2897                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2898                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2899                                         if (!arv) continue;
2900                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2901                                         if (ar->locked()) continue;
2902                                         framecnt_t len = ar->fade_out()->back()->when;
2903                                         if (len < -dt) dt = max(dt, -len);
2904                                 }
2905                                 break;
2906                         case ContentsTrim:
2907                                 break;
2908                 }
2909         }
2910
2911
2912         switch (_operation) {
2913         case StartTrim:
2914                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2915                         bool changed = i->view->trim_front (i->initial_position + dt, non_overlap_trim);
2916                         if (changed && _preserve_fade_anchor) {
2917                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2918                                 if (arv) {
2919                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2920                                         framecnt_t len = ar->fade_in()->back()->when;
2921                                         framecnt_t diff = ar->first_frame() - i->initial_position;
2922                                         framepos_t new_length = len - diff;
2923                                         i->anchored_fade_length = min (ar->length(), new_length);
2924                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, true  /*START*/ );
2925                                         arv->reset_fade_in_shape_width (ar, i->anchored_fade_length, true);
2926                                 }
2927                         }
2928                 }
2929                 break;
2930
2931         case EndTrim:
2932                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2933                         bool changed = i->view->trim_end (i->initial_end + dt, non_overlap_trim);
2934                         if (changed && _preserve_fade_anchor) {
2935                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2936                                 if (arv) {
2937                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2938                                         framecnt_t len = ar->fade_out()->back()->when;
2939                                         framecnt_t diff = 1 + ar->last_frame() - i->initial_end;
2940                                         framepos_t new_length = len + diff;
2941                                         i->anchored_fade_length = min (ar->length(), new_length);
2942                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, false  /*END*/ );
2943                                         arv->reset_fade_out_shape_width (ar, i->anchored_fade_length, true);
2944                                 }
2945                         }
2946                 }
2947                 break;
2948
2949         case ContentsTrim:
2950                 {
2951                         frame_delta = (last_pointer_frame() - adjusted_current_frame(event));
2952
2953                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2954                                 i->view->move_contents (frame_delta);
2955                         }
2956                 }
2957                 break;
2958         }
2959
2960         switch (_operation) {
2961         case StartTrim:
2962                 show_verbose_cursor_time ((framepos_t) (rv->region()->position() / speed));
2963                 break;
2964         case EndTrim:
2965                 show_verbose_cursor_duration ((framepos_t)  rv->region()->position() / speed, (framepos_t) rv->region()->last_frame() / speed);
2966                 break;
2967         case ContentsTrim:
2968                 // show_verbose_cursor_time (frame_delta);
2969                 break;
2970         }
2971 }
2972
2973 void
2974 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
2975 {
2976         if (movement_occurred) {
2977                 motion (event, false);
2978
2979                 if (_operation == StartTrim) {
2980                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2981                                 {
2982                                         /* This must happen before the region's StatefulDiffCommand is created, as it may
2983                                            `correct' (ahem) the region's _start from being negative to being zero.  It
2984                                            needs to be zero in the undo record.
2985                                         */
2986                                         i->view->trim_front_ending ();
2987                                 }
2988                                 if (_preserve_fade_anchor) {
2989                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2990                                         if (arv) {
2991                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2992                                                 arv->reset_fade_in_shape_width (ar, i->anchored_fade_length);
2993                                                 ar->set_fade_in_length(i->anchored_fade_length);
2994                                                 ar->set_fade_in_active(true);
2995                                         }
2996                                 }
2997                                 if (_jump_position_when_done) {
2998                                         i->view->region()->set_position (i->initial_position);
2999                                 }
3000                         }
3001                 } else if (_operation == EndTrim) {
3002                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3003                                 if (_preserve_fade_anchor) {
3004                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
3005                                         if (arv) {
3006                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
3007                                                 arv->reset_fade_out_shape_width (ar, i->anchored_fade_length);
3008                                                 ar->set_fade_out_length(i->anchored_fade_length);
3009                                                 ar->set_fade_out_active(true);
3010                                         }
3011                                 }
3012                                 if (_jump_position_when_done) {
3013                                         i->view->region()->set_position (i->initial_end - i->view->region()->length());
3014                                 }
3015                         }
3016                 }
3017
3018                 if (!_views.empty()) {
3019                         if (_operation == StartTrim) {
3020                                 _editor->maybe_locate_with_edit_preroll(
3021                                         _views.begin()->view->region()->position());
3022                         }
3023                         if (_operation == EndTrim) {
3024                                 _editor->maybe_locate_with_edit_preroll(
3025                                         _views.begin()->view->region()->position() +
3026                                         _views.begin()->view->region()->length());
3027                         }
3028                 }
3029
3030                 if (!_editor->selection->selected (_primary)) {
3031                         _primary->thaw_after_trim ();
3032                 } else {
3033
3034                         set<boost::shared_ptr<Playlist> > diffed_playlists;
3035
3036                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3037                                 i->view->thaw_after_trim ();
3038                                 i->view->enable_display (true);
3039
3040                                 /* Trimming one region may affect others on the playlist, so we need
3041                                    to get undo Commands from the whole playlist rather than just the
3042                                    region.  Use diffed_playlists to make sure we don't diff a given
3043                                    playlist more than once.
3044                                 */
3045                                 boost::shared_ptr<Playlist> p = i->view->region()->playlist ();
3046                                 if (diffed_playlists.find (p) == diffed_playlists.end()) {
3047                                         vector<Command*> cmds;
3048                                         p->rdiff (cmds);
3049                                         _editor->session()->add_commands (cmds);
3050                                         diffed_playlists.insert (p);
3051                                 }
3052                         }
3053                 }
3054
3055                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
3056                         (*p)->thaw ();
3057                 }
3058
3059                 _editor->motion_frozen_playlists.clear ();
3060                 _editor->commit_reversible_command();
3061
3062         } else {
3063                 /* no mouse movement */
3064                 if (adjusted_current_frame (event) != adjusted_frame (_drags->current_pointer_frame(), event, false)) {
3065                         _editor->point_trim (event, adjusted_current_frame (event));
3066                 }
3067         }
3068
3069         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3070                 i->view->region()->resume_property_changes ();
3071         }
3072 }
3073
3074 void
3075 TrimDrag::aborted (bool movement_occurred)
3076 {
3077         /* Our motion method is changing model state, so use the Undo system
3078            to cancel.  Perhaps not ideal, as this will leave an Undo point
3079            behind which may be slightly odd from the user's point of view.
3080         */
3081
3082         finished (0, true);
3083
3084         if (movement_occurred) {
3085                 _editor->undo ();
3086         }
3087
3088         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3089                 i->view->region()->resume_property_changes ();
3090         }
3091 }
3092
3093 void
3094 TrimDrag::setup_pointer_frame_offset ()
3095 {
3096         list<DraggingView>::iterator i = _views.begin ();
3097         while (i != _views.end() && i->view != _primary) {
3098                 ++i;
3099         }
3100
3101         if (i == _views.end()) {
3102                 return;
3103         }
3104
3105         switch (_operation) {
3106         case StartTrim:
3107                 _pointer_frame_offset = raw_grab_frame() - i->initial_position;
3108                 break;
3109         case EndTrim:
3110                 _pointer_frame_offset = raw_grab_frame() - i->initial_end;
3111                 break;
3112         case ContentsTrim:
3113                 break;
3114         }
3115 }
3116
3117 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3118         : Drag (e, i),
3119           _copy (c)
3120         , before_state (0)
3121 {
3122         DEBUG_TRACE (DEBUG::Drags, "New MeterMarkerDrag\n");
3123         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
3124         assert (_marker);
3125         _real_section = &_marker->meter();
3126
3127 }
3128
3129 void
3130 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3131 {
3132         Drag::start_grab (event, cursor);
3133         show_verbose_cursor_time (adjusted_current_frame(event));
3134 }
3135
3136 void
3137 MeterMarkerDrag::setup_pointer_frame_offset ()
3138 {
3139         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3140 }
3141
3142 void
3143 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3144 {
3145         if (!_marker->meter().movable()) {
3146                 //return;
3147         }
3148
3149         if (first_move) {
3150
3151                 // create a dummy marker to catch events, then hide it.
3152
3153                 char name[64];
3154                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3155
3156                 _marker = new MeterMarker (
3157                         *_editor,
3158                         *_editor->meter_group,
3159                         UIConfiguration::instance().color ("meter marker"),
3160                         name,
3161                         *new MeterSection (_marker->meter())
3162                 );
3163
3164                 /* use the new marker for the grab */
3165                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3166                 _marker->hide();
3167
3168                 TempoMap& map (_editor->session()->tempo_map());
3169                 /* get current state */
3170                 before_state = &map.get_state();
3171
3172                 if (!_copy) {
3173                         _editor->begin_reversible_command (_("move meter mark"));
3174                 } else {
3175                         _editor->begin_reversible_command (_("copy meter mark"));
3176
3177                         Timecode::BBT_Time bbt;
3178                         map.bbt_time (_marker->position(), bbt);
3179                         map.round_bbt (bbt, -1);
3180                         if (_real_section->frame() < adjusted_current_frame (event, false)) {
3181                                 ++bbt.bars;
3182                         } else {
3183                                 --bbt.bars;
3184                         }
3185                         const double beat = map.bbt_to_beats (bbt);
3186
3187                         if (_real_section->position_lock_style() == AudioTime) {
3188                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor())
3189                                                                , _marker->position(), beat, bbt);
3190                         } else {
3191                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor()), beat, bbt);
3192                         }
3193                 }
3194         }
3195
3196         framepos_t const pf = adjusted_current_frame (event, false);
3197         _marker->set_position (pf);
3198         if (_marker->meter().position_lock_style() == MusicTime) {
3199                 double const baf = _editor->session()->tempo_map().beat_at_frame (_editor->session()->tempo_map().round_to_bar (pf, (RoundMode) 0));
3200                 _editor->session()->tempo_map().gui_move_meter (_real_section, baf);
3201         } else {
3202                 _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3203         }
3204         _marker->set_position (pf);
3205         show_verbose_cursor_time (pf);
3206 }
3207
3208 void
3209 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3210 {
3211         if (!movement_occurred) {
3212                 if (was_double_click()) {
3213                         _editor->edit_meter_marker (*_marker);
3214                 }
3215                 return;
3216         }
3217
3218         TempoMap& map (_editor->session()->tempo_map());
3219
3220         if (_copy == true) {
3221                 XMLNode &after = map.get_state();
3222                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3223                 _editor->commit_reversible_command ();
3224
3225         } else {
3226                 if (_real_section->position_lock_style() == AudioTime) {
3227                         map.replace_meter (*_real_section, Meter (_real_section->divisions_per_bar(), _real_section->note_divisor()), _real_section->frame());
3228                 } else {
3229                         map.replace_meter (*_real_section, Meter (_real_section->divisions_per_bar(), _real_section->note_divisor()), _real_section->bbt());
3230                 }
3231
3232                 XMLNode &after = map.get_state();
3233                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3234                 _editor->commit_reversible_command ();
3235         }
3236
3237         // delete the dummy marker we used for visual representation while moving.
3238         // a new visual marker will show up automatically.
3239         delete _marker;
3240 }
3241
3242 void
3243 MeterMarkerDrag::aborted (bool moved)
3244 {
3245         _marker->set_position (_marker->meter().frame ());
3246
3247         if (moved) {
3248                 TempoMap& map (_editor->session()->tempo_map());
3249                 /* we removed it before, so add it back now */
3250                 map.add_meter (_marker->meter(), map.beat_at_frame (_marker->meter().frame()), _marker->meter().bbt());
3251                 // delete the dummy marker we used for visual representation while moving.
3252                 // a new visual marker will show up automatically.
3253                 delete _marker;
3254         }
3255 }
3256
3257 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3258         : Drag (e, i)
3259         , _copy (c)
3260         , before_state (0)
3261 {
3262         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3263
3264         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3265         _real_section = &_marker->tempo();
3266         _movable = _real_section->movable();
3267         assert (_marker);
3268 }
3269
3270 void
3271 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3272 {
3273         Drag::start_grab (event, cursor);
3274         if (!_real_section->active()) {
3275                 show_verbose_cursor_text (_("inactive"));
3276         } else {
3277                 show_verbose_cursor_time (adjusted_current_frame (event));
3278         }
3279 }
3280
3281 void
3282 TempoMarkerDrag::setup_pointer_frame_offset ()
3283 {
3284         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3285 }
3286
3287 void
3288 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3289 {
3290         if (!_real_section->active()) {
3291                 return;
3292         }
3293         if (first_move) {
3294
3295                 // mvc drag - create a dummy marker to catch events, hide it.
3296
3297                 char name[64];
3298                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3299
3300                 TempoSection section (_marker->tempo());
3301
3302                 _marker = new TempoMarker (
3303                         *_editor,
3304                         *_editor->tempo_group,
3305                         UIConfiguration::instance().color ("tempo marker"),
3306                         name,
3307                         *new TempoSection (_marker->tempo())
3308                         );
3309
3310                 /* use the new marker for the grab */
3311                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3312
3313                 if (!_copy) {
3314                         _editor->begin_reversible_command (_("move tempo mark"));
3315                         TempoMap& map (_editor->session()->tempo_map());
3316                         /* get current state */
3317                         before_state = &map.get_state();
3318                 }
3319                 _marker->hide();
3320         }
3321
3322         framepos_t pf;
3323         Tempo const tp = _marker->tempo();
3324
3325         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3326                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3327                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3328                 stringstream strs;
3329                 strs << new_bpm;
3330                 show_verbose_cursor_text (strs.str());
3331         } else if (_movable) {
3332                 if (!_editor->snap_musical()) {
3333                         pf = adjusted_current_frame (event);
3334                 } else {
3335                         bool use_snap;
3336                         TempoMap& map (_editor->session()->tempo_map());
3337
3338                         pf = adjusted_current_frame (event, false);
3339                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::snap_modifier ())) {
3340                                 if (_editor->snap_mode() == Editing::SnapOff) {
3341                                         use_snap = true;
3342                                 } else {
3343                                         use_snap = false;
3344                                 }
3345                         } else {
3346                                 if (_editor->snap_mode() == Editing::SnapOff) {
3347                                         use_snap = false;
3348                                 } else {
3349                                         use_snap = true;
3350                                 }
3351                         }
3352
3353                         Timecode::BBT_Time when;
3354                         map.bbt_time (pf, when);
3355
3356                         if (_real_section->position_lock_style() == MusicTime) {
3357
3358                                 const double pulse = map.predict_tempo_pulse (_real_section, pf);
3359                                 when = map.pulse_to_bbt (pulse);
3360                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3361                                         map.round_bbt (when, -1);
3362                                 } else if (use_snap) {
3363                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3364                                 }
3365                                 const double beat = map.bbt_to_beats (when);
3366                                 map.gui_move_tempo_beat (_real_section, beat);
3367                         } else {
3368                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3369                                         map.round_bbt (when, -1);
3370                                 } else if (use_snap) {
3371                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3372                                 }
3373                                 pf = map.predict_tempo_frame (_real_section, when);
3374                                 map.gui_move_tempo_frame (_real_section, pf);
3375                         }
3376                 }
3377
3378                 show_verbose_cursor_time (_real_section->frame());
3379         }
3380         _marker->set_position (pf);
3381 }
3382
3383 void
3384 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3385 {
3386         if (!_real_section->active()) {
3387                 return;
3388         }
3389         if (!movement_occurred) {
3390                 if (was_double_click()) {
3391                         _editor->edit_tempo_marker (*_marker);
3392                 }
3393                 return;
3394         }
3395
3396
3397         TempoMap& map (_editor->session()->tempo_map());
3398
3399         if (_copy == true) {
3400                 _editor->begin_reversible_command (_("copy tempo mark"));
3401                 XMLNode &before = map.get_state();
3402
3403                 if (_marker->tempo().position_lock_style() == MusicTime) {
3404                         double const pulse = map.predict_tempo_pulse (_real_section, _real_section->frame());
3405                         map.add_tempo (_marker->tempo(), pulse, _marker->tempo().type());
3406                 } else {
3407                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3408                 }
3409
3410                 XMLNode &after = map.get_state();
3411                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3412                 _editor->commit_reversible_command ();
3413
3414         } else {
3415                 if (_marker->tempo().position_lock_style() == MusicTime) {
3416                         double const pulse = map.predict_tempo_pulse (_real_section, _real_section->frame());
3417                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3418                                            , pulse, _marker->tempo().type());
3419                 } else {
3420                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3421                                            , _real_section->frame(), _marker->tempo().type());
3422                 }
3423
3424                 XMLNode &after = map.get_state();
3425                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3426                 _editor->commit_reversible_command ();
3427         }
3428
3429         // delete the dummy marker we used for visual representation while moving.
3430         // a new visual marker will show up automatically.
3431         delete _marker;
3432 }
3433
3434 void
3435 TempoMarkerDrag::aborted (bool moved)
3436 {
3437         _marker->set_position (_marker->tempo().frame());
3438         if (moved) {
3439                 TempoMap& map (_editor->session()->tempo_map());
3440                 /* we removed it before, so add it back now */
3441                 if (_marker->tempo().position_lock_style() == MusicTime) {
3442                         map.add_tempo (_marker->tempo(), _marker->tempo().pulse(), _marker->tempo().type());
3443                 } else {
3444                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3445                 }
3446                 // delete the dummy marker we used for visual representation while moving.
3447                 // a new visual marker will show up automatically.
3448                 delete _marker;
3449         }
3450 }
3451
3452 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3453         : Drag (e, &c.track_canvas_item(), false)
3454         , _cursor (c)
3455         , _stop (s)
3456         , _grab_zoom (0.0)
3457 {
3458         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3459 }
3460
3461 /** Do all the things we do when dragging the playhead to make it look as though
3462  *  we have located, without actually doing the locate (because that would cause
3463  *  the diskstream buffers to be refilled, which is too slow).
3464  */
3465 void
3466 CursorDrag::fake_locate (framepos_t t)
3467 {
3468         if (_editor->session () == 0) {
3469                 return;
3470         }
3471
3472         _editor->playhead_cursor->set_position (t);
3473
3474         Session* s = _editor->session ();
3475         if (s->timecode_transmission_suspended ()) {
3476                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3477                 /* This is asynchronous so it will be sent "now"
3478                  */
3479                 s->send_mmc_locate (f);
3480                 /* These are synchronous and will be sent during the next
3481                    process cycle
3482                 */
3483                 s->queue_full_time_code ();
3484                 s->queue_song_position_pointer ();
3485         }
3486
3487         show_verbose_cursor_time (t);
3488         _editor->UpdateAllTransportClocks (t);
3489 }
3490
3491 void
3492 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3493 {
3494         Drag::start_grab (event, c);
3495         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3496
3497         _grab_zoom = _editor->samples_per_pixel;
3498
3499         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3500
3501         _editor->snap_to_with_modifier (where, event);
3502
3503         _editor->_dragging_playhead = true;
3504
3505         Session* s = _editor->session ();
3506
3507         /* grab the track canvas item as well */
3508
3509         _cursor.track_canvas_item().grab();
3510
3511         if (s) {
3512                 if (_was_rolling && _stop) {
3513                         s->request_stop ();
3514                 }
3515
3516                 if (s->is_auditioning()) {
3517                         s->cancel_audition ();
3518                 }
3519
3520
3521                 if (AudioEngine::instance()->connected()) {
3522
3523                         /* do this only if we're the engine is connected
3524                          * because otherwise this request will never be
3525                          * serviced and we'll busy wait forever. likewise,
3526                          * notice if we are disconnected while waiting for the
3527                          * request to be serviced.
3528                          */
3529
3530                         s->request_suspend_timecode_transmission ();
3531                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3532                                 /* twiddle our thumbs */
3533                         }
3534                 }
3535         }
3536
3537         fake_locate (where - snap_delta (event->button.state));
3538 }
3539
3540 void
3541 CursorDrag::motion (GdkEvent* event, bool)
3542 {
3543         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3544         _editor->snap_to_with_modifier (where, event);
3545         if (where != last_pointer_frame()) {
3546                 fake_locate (where - snap_delta (event->button.state));
3547         }
3548 }
3549
3550 void
3551 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3552 {
3553         _editor->_dragging_playhead = false;
3554
3555         _cursor.track_canvas_item().ungrab();
3556
3557         if (!movement_occurred && _stop) {
3558                 return;
3559         }
3560
3561         motion (event, false);
3562
3563         Session* s = _editor->session ();
3564         if (s) {
3565                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3566                 _editor->_pending_locate_request = true;
3567                 s->request_resume_timecode_transmission ();
3568         }
3569 }
3570
3571 void
3572 CursorDrag::aborted (bool)
3573 {
3574         _cursor.track_canvas_item().ungrab();
3575
3576         if (_editor->_dragging_playhead) {
3577                 _editor->session()->request_resume_timecode_transmission ();
3578                 _editor->_dragging_playhead = false;
3579         }
3580
3581         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3582 }
3583
3584 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3585         : RegionDrag (e, i, p, v)
3586 {
3587         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3588 }
3589
3590 void
3591 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3592 {
3593         Drag::start_grab (event, cursor);
3594
3595         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3596         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3597         setup_snap_delta (r->position ());
3598
3599         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3600 }
3601
3602 void
3603 FadeInDrag::setup_pointer_frame_offset ()
3604 {
3605         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3606         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3607         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3608 }
3609
3610 void
3611 FadeInDrag::motion (GdkEvent* event, bool)
3612 {
3613         framecnt_t fade_length;
3614
3615         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3616         _editor->snap_to_with_modifier (pos, event);
3617         pos -= snap_delta (event->button.state);
3618
3619         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3620
3621         if (pos < (region->position() + 64)) {
3622                 fade_length = 64; // this should be a minimum defined somewhere
3623         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3624                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3625         } else {
3626                 fade_length = pos - region->position();
3627         }
3628
3629         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3630
3631                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3632
3633                 if (!tmp) {
3634                         continue;
3635                 }
3636
3637                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3638         }
3639
3640         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3641 }
3642
3643 void
3644 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3645 {
3646         if (!movement_occurred) {
3647                 return;
3648         }
3649
3650         framecnt_t fade_length;
3651         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3652         _editor->snap_to_with_modifier (pos, event);
3653         pos -= snap_delta (event->button.state);
3654
3655         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3656
3657         if (pos < (region->position() + 64)) {
3658                 fade_length = 64; // this should be a minimum defined somewhere
3659         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3660                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3661         } else {
3662                 fade_length = pos - region->position();
3663         }
3664
3665         bool in_command = false;
3666
3667         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3668
3669                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3670
3671                 if (!tmp) {
3672                         continue;
3673                 }
3674
3675                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3676                 XMLNode &before = alist->get_state();
3677
3678                 tmp->audio_region()->set_fade_in_length (fade_length);
3679                 tmp->audio_region()->set_fade_in_active (true);
3680
3681                 if (!in_command) {
3682                         _editor->begin_reversible_command (_("change fade in length"));
3683                         in_command = true;
3684                 }
3685                 XMLNode &after = alist->get_state();
3686                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3687         }
3688
3689         if (in_command) {
3690                 _editor->commit_reversible_command ();
3691         }
3692 }
3693
3694 void
3695 FadeInDrag::aborted (bool)
3696 {
3697         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3698                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3699
3700                 if (!tmp) {
3701                         continue;
3702                 }
3703
3704                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3705         }
3706 }
3707
3708 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3709         : RegionDrag (e, i, p, v)
3710 {
3711         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3712 }
3713
3714 void
3715 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3716 {
3717         Drag::start_grab (event, cursor);
3718
3719         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3720         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3721         setup_snap_delta (r->last_frame ());
3722
3723         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3724 }
3725
3726 void
3727 FadeOutDrag::setup_pointer_frame_offset ()
3728 {
3729         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3730         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3731         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3732 }
3733
3734 void
3735 FadeOutDrag::motion (GdkEvent* event, bool)
3736 {
3737         framecnt_t fade_length;
3738
3739         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3740         _editor->snap_to_with_modifier (pos, event);
3741         pos -= snap_delta (event->button.state);
3742
3743         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3744
3745         if (pos > (region->last_frame() - 64)) {
3746                 fade_length = 64; // this should really be a minimum fade defined somewhere
3747         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3748                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3749         } else {
3750                 fade_length = region->last_frame() - pos;
3751         }
3752
3753         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3754
3755                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3756
3757                 if (!tmp) {
3758                         continue;
3759                 }
3760
3761                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3762         }
3763
3764         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3765 }
3766
3767 void
3768 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3769 {
3770         if (!movement_occurred) {
3771                 return;
3772         }
3773
3774         framecnt_t fade_length;
3775
3776         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3777         _editor->snap_to_with_modifier (pos, event);
3778         pos -= snap_delta (event->button.state);
3779
3780         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3781
3782         if (pos > (region->last_frame() - 64)) {
3783                 fade_length = 64; // this should really be a minimum fade defined somewhere
3784         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3785                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3786         } else {
3787                 fade_length = region->last_frame() - pos;
3788         }
3789
3790         bool in_command = false;
3791
3792         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3793
3794                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3795
3796                 if (!tmp) {
3797                         continue;
3798                 }
3799
3800                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3801                 XMLNode &before = alist->get_state();
3802
3803                 tmp->audio_region()->set_fade_out_length (fade_length);
3804                 tmp->audio_region()->set_fade_out_active (true);
3805
3806                 if (!in_command) {
3807                         _editor->begin_reversible_command (_("change fade out length"));
3808                         in_command = true;
3809                 }
3810                 XMLNode &after = alist->get_state();
3811                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3812         }
3813
3814         if (in_command) {
3815                 _editor->commit_reversible_command ();
3816         }
3817 }
3818
3819 void
3820 FadeOutDrag::aborted (bool)
3821 {
3822         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3823                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3824
3825                 if (!tmp) {
3826                         continue;
3827                 }
3828
3829                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3830         }
3831 }
3832
3833 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3834         : Drag (e, i)
3835         , _selection_changed (false)
3836 {
3837         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3838         Gtk::Window* toplevel = _editor->current_toplevel();
3839         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3840
3841         assert (_marker);
3842
3843         _points.push_back (ArdourCanvas::Duple (0, 0));
3844
3845         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3846 }
3847
3848 MarkerDrag::~MarkerDrag ()
3849 {
3850         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3851                 delete i->location;
3852         }
3853 }
3854
3855 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3856 {
3857         location = new Location (*l);
3858         markers.push_back (m);
3859         move_both = false;
3860 }
3861
3862 void
3863 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3864 {
3865         Drag::start_grab (event, cursor);
3866
3867         bool is_start;
3868
3869         Location *location = _editor->find_location_from_marker (_marker, is_start);
3870         _editor->_dragging_edit_point = true;
3871
3872         update_item (location);
3873
3874         // _drag_line->show();
3875         // _line->raise_to_top();
3876
3877         if (is_start) {
3878                 show_verbose_cursor_time (location->start());
3879         } else {
3880                 show_verbose_cursor_time (location->end());
3881         }
3882         setup_snap_delta (is_start ? location->start() : location->end());
3883
3884         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3885
3886         switch (op) {
3887         case Selection::Toggle:
3888                 /* we toggle on the button release */
3889                 break;
3890         case Selection::Set:
3891                 if (!_editor->selection->selected (_marker)) {
3892                         _editor->selection->set (_marker);
3893                         _selection_changed = true;
3894                 }
3895                 break;
3896         case Selection::Extend:
3897         {
3898                 Locations::LocationList ll;
3899                 list<ArdourMarker*> to_add;
3900                 framepos_t s, e;
3901                 _editor->selection->markers.range (s, e);
3902                 s = min (_marker->position(), s);
3903                 e = max (_marker->position(), e);
3904                 s = min (s, e);
3905                 e = max (s, e);
3906                 if (e < max_framepos) {
3907                         ++e;
3908                 }
3909                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3910                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3911                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3912                         if (lm) {
3913                                 if (lm->start) {
3914                                         to_add.push_back (lm->start);
3915                                 }
3916                                 if (lm->end) {
3917                                         to_add.push_back (lm->end);
3918                                 }
3919                         }
3920                 }
3921                 if (!to_add.empty()) {
3922                         _editor->selection->add (to_add);
3923                         _selection_changed = true;
3924                 }
3925                 break;
3926         }
3927         case Selection::Add:
3928                 _editor->selection->add (_marker);
3929                 _selection_changed = true;
3930
3931                 break;
3932         }
3933
3934         /* Set up copies for us to manipulate during the drag
3935          */
3936
3937         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3938
3939                 Location* l = _editor->find_location_from_marker (*i, is_start);
3940
3941                 if (!l) {
3942                         continue;
3943                 }
3944
3945                 if (l->is_mark()) {
3946                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3947                 } else {
3948                         /* range: check that the other end of the range isn't
3949                            already there.
3950                         */
3951                         CopiedLocationInfo::iterator x;
3952                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3953                                 if (*(*x).location == *l) {
3954                                         break;
3955                                 }
3956                         }
3957                         if (x == _copied_locations.end()) {
3958                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3959                         } else {
3960                                 (*x).markers.push_back (*i);
3961                                 (*x).move_both = true;
3962                         }
3963                 }
3964
3965         }
3966 }
3967
3968 void
3969 MarkerDrag::setup_pointer_frame_offset ()
3970 {
3971         bool is_start;
3972         Location *location = _editor->find_location_from_marker (_marker, is_start);
3973         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3974 }
3975
3976 void
3977 MarkerDrag::motion (GdkEvent* event, bool)
3978 {
3979         framecnt_t f_delta = 0;
3980         bool is_start;
3981         bool move_both = false;
3982         Location *real_location;
3983         Location *copy_location = 0;
3984         framecnt_t const sd = snap_delta (event->button.state);
3985
3986         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3987         framepos_t next = newframe;
3988
3989         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3990                 move_both = true;
3991         }
3992
3993         CopiedLocationInfo::iterator x;
3994
3995         /* find the marker we're dragging, and compute the delta */
3996
3997         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3998
3999                 copy_location = (*x).location;
4000
4001                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4002
4003                         /* this marker is represented by this
4004                          * CopiedLocationMarkerInfo
4005                          */
4006
4007                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4008                                 /* que pasa ?? */
4009                                 return;
4010                         }
4011
4012                         if (real_location->is_mark()) {
4013                                 f_delta = newframe - copy_location->start();
4014                         } else {
4015
4016
4017                                 switch (_marker->type()) {
4018                                 case ArdourMarker::SessionStart:
4019                                 case ArdourMarker::RangeStart:
4020                                 case ArdourMarker::LoopStart:
4021                                 case ArdourMarker::PunchIn:
4022                                         f_delta = newframe - copy_location->start();
4023                                         break;
4024
4025                                 case ArdourMarker::SessionEnd:
4026                                 case ArdourMarker::RangeEnd:
4027                                 case ArdourMarker::LoopEnd:
4028                                 case ArdourMarker::PunchOut:
4029                                         f_delta = newframe - copy_location->end();
4030                                         break;
4031                                 default:
4032                                         /* what kind of marker is this ? */
4033                                         return;
4034                                 }
4035                         }
4036
4037                         break;
4038                 }
4039         }
4040
4041         if (x == _copied_locations.end()) {
4042                 /* hmm, impossible - we didn't find the dragged marker */
4043                 return;
4044         }
4045
4046         /* now move them all */
4047
4048         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4049
4050                 copy_location = x->location;
4051
4052                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4053                         continue;
4054                 }
4055
4056                 if (real_location->locked()) {
4057                         continue;
4058                 }
4059
4060                 if (copy_location->is_mark()) {
4061
4062                         /* now move it */
4063
4064                         copy_location->set_start (copy_location->start() + f_delta);
4065
4066                 } else {
4067
4068                         framepos_t new_start = copy_location->start() + f_delta;
4069                         framepos_t new_end = copy_location->end() + f_delta;
4070
4071                         if (is_start) { // start-of-range marker
4072
4073                                 if (move_both || (*x).move_both) {
4074                                         copy_location->set_start (new_start);
4075                                         copy_location->set_end (new_end);
4076                                 } else  if (new_start < copy_location->end()) {
4077                                         copy_location->set_start (new_start);
4078                                 } else if (newframe > 0) {
4079                                         //_editor->snap_to (next, RoundUpAlways, true);
4080                                         copy_location->set_end (next);
4081                                         copy_location->set_start (newframe);
4082                                 }
4083
4084                         } else { // end marker
4085
4086                                 if (move_both || (*x).move_both) {
4087                                         copy_location->set_end (new_end);
4088                                         copy_location->set_start (new_start);
4089                                 } else if (new_end > copy_location->start()) {
4090                                         copy_location->set_end (new_end);
4091                                 } else if (newframe > 0) {
4092                                         //_editor->snap_to (next, RoundDownAlways, true);
4093                                         copy_location->set_start (next);
4094                                         copy_location->set_end (newframe);
4095                                 }
4096                         }
4097                 }
4098
4099                 update_item (copy_location);
4100
4101                 /* now lookup the actual GUI items used to display this
4102                  * location and move them to wherever the copy of the location
4103                  * is now. This means that the logic in ARDOUR::Location is
4104                  * still enforced, even though we are not (yet) modifying
4105                  * the real Location itself.
4106                  */
4107
4108                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4109
4110                 if (lm) {
4111                         lm->set_position (copy_location->start(), copy_location->end());
4112                 }
4113
4114         }
4115
4116         assert (!_copied_locations.empty());
4117
4118         show_verbose_cursor_time (newframe);
4119 }
4120
4121 void
4122 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4123 {
4124         if (!movement_occurred) {
4125
4126                 if (was_double_click()) {
4127                         _editor->rename_marker (_marker);
4128                         return;
4129                 }
4130
4131                 /* just a click, do nothing but finish
4132                    off the selection process
4133                 */
4134
4135                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4136                 switch (op) {
4137                 case Selection::Set:
4138                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4139                                 _editor->selection->set (_marker);
4140                                 _selection_changed = true;
4141                         }
4142                         break;
4143
4144                 case Selection::Toggle:
4145                         /* we toggle on the button release, click only */
4146                         _editor->selection->toggle (_marker);
4147                         _selection_changed = true;
4148
4149                         break;
4150
4151                 case Selection::Extend:
4152                 case Selection::Add:
4153                         break;
4154                 }
4155
4156                 if (_selection_changed) {
4157                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4158                         _editor->commit_reversible_selection_op();
4159                 }
4160
4161                 return;
4162         }
4163
4164         _editor->_dragging_edit_point = false;
4165
4166         XMLNode &before = _editor->session()->locations()->get_state();
4167         bool in_command = false;
4168
4169         MarkerSelection::iterator i;
4170         CopiedLocationInfo::iterator x;
4171         bool is_start;
4172
4173         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4174              x != _copied_locations.end() && i != _editor->selection->markers.end();
4175              ++i, ++x) {
4176
4177                 Location * location = _editor->find_location_from_marker (*i, is_start);
4178
4179                 if (location) {
4180
4181                         if (location->locked()) {
4182                                 continue;
4183                         }
4184                         if (!in_command) {
4185                                 _editor->begin_reversible_command ( _("move marker") );
4186                                 in_command = true;
4187                         }
4188                         if (location->is_mark()) {
4189                                 location->set_start (((*x).location)->start());
4190                         } else {
4191                                 location->set (((*x).location)->start(), ((*x).location)->end());
4192                         }
4193                 }
4194         }
4195
4196         if (in_command) {
4197                 XMLNode &after = _editor->session()->locations()->get_state();
4198                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4199                 _editor->commit_reversible_command ();
4200         }
4201 }
4202
4203 void
4204 MarkerDrag::aborted (bool movement_occurred)
4205 {
4206         if (!movement_occurred) {
4207                 return;
4208         }
4209
4210         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4211
4212                 /* move all markers to their original location */
4213
4214
4215                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4216
4217                         bool is_start;
4218                         Location * location = _editor->find_location_from_marker (*m, is_start);
4219
4220                         if (location) {
4221                                 (*m)->set_position (is_start ? location->start() : location->end());
4222                         }
4223                 }
4224         }
4225 }
4226
4227 void
4228 MarkerDrag::update_item (Location*)
4229 {
4230         /* noop */
4231 }
4232
4233 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4234         : Drag (e, i)
4235         , _fixed_grab_x (0.0)
4236         , _fixed_grab_y (0.0)
4237         , _cumulative_x_drag (0.0)
4238         , _cumulative_y_drag (0.0)
4239         , _pushing (false)
4240         , _final_index (0)
4241 {
4242         if (_zero_gain_fraction < 0.0) {
4243                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4244         }
4245
4246         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4247
4248         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4249         assert (_point);
4250 }
4251
4252
4253 void
4254 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4255 {
4256         Drag::start_grab (event, _editor->cursors()->fader);
4257
4258         // start the grab at the center of the control point so
4259         // the point doesn't 'jump' to the mouse after the first drag
4260         _fixed_grab_x = _point->get_x();
4261         _fixed_grab_y = _point->get_y();
4262
4263         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4264         setup_snap_delta (pos);
4265
4266         float const fraction = 1 - (_point->get_y() / _point->line().height());
4267         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4268
4269         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4270
4271         if (!_point->can_slide ()) {
4272                 _x_constrained = true;
4273         }
4274 }
4275
4276 void
4277 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4278 {
4279         double dx = _drags->current_pointer_x() - last_pointer_x();
4280         double dy = current_pointer_y() - last_pointer_y();
4281         bool need_snap = true;
4282
4283         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4284                 dx *= 0.1;
4285                 dy *= 0.1;
4286                 need_snap = false;
4287         }
4288
4289         /* coordinate in pixels relative to the start of the region (for region-based automation)
4290            or track (for track-based automation) */
4291         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4292         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4293
4294         // calculate zero crossing point. back off by .01 to stay on the
4295         // positive side of zero
4296         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4297
4298         if (_x_constrained) {
4299                 cx = _fixed_grab_x;
4300         }
4301         if (_y_constrained) {
4302                 cy = _fixed_grab_y;
4303         }
4304
4305         _cumulative_x_drag = cx - _fixed_grab_x;
4306         _cumulative_y_drag = cy - _fixed_grab_y;
4307
4308         cx = max (0.0, cx);
4309         cy = max (0.0, cy);
4310         cy = min ((double) _point->line().height(), cy);
4311
4312         // make sure we hit zero when passing through
4313         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4314                 cy = zero_gain_y;
4315         }
4316
4317         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4318
4319         if (!_x_constrained && need_snap) {
4320                 _editor->snap_to_with_modifier (cx_frames, event);
4321         }
4322
4323         cx_frames -= snap_delta (event->button.state);
4324         cx_frames = min (cx_frames, _point->line().maximum_time());
4325
4326         float const fraction = 1.0 - (cy / _point->line().height());
4327
4328         if (first_motion) {
4329                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4330                 _editor->begin_reversible_command (_("automation event move"));
4331                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4332         }
4333         pair<double, float> result;
4334         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4335
4336         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4337 }
4338
4339 void
4340 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4341 {
4342         if (!movement_occurred) {
4343
4344                 /* just a click */
4345                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4346                         _editor->reset_point_selection ();
4347                 }
4348
4349         } else {
4350                 _point->line().end_drag (_pushing, _final_index);
4351                 _editor->commit_reversible_command ();
4352         }
4353 }
4354
4355 void
4356 ControlPointDrag::aborted (bool)
4357 {
4358         _point->line().reset ();
4359 }
4360
4361 bool
4362 ControlPointDrag::active (Editing::MouseMode m)
4363 {
4364         if (m == Editing::MouseDraw) {
4365                 /* always active in mouse draw */
4366                 return true;
4367         }
4368
4369         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4370         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4371 }
4372
4373 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4374         : Drag (e, i)
4375         , _line (0)
4376         , _fixed_grab_x (0.0)
4377         , _fixed_grab_y (0.0)
4378         , _cumulative_y_drag (0)
4379         , _before (0)
4380         , _after (0)
4381 {
4382         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4383 }
4384
4385 void
4386 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4387 {
4388         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4389         assert (_line);
4390
4391         _item = &_line->grab_item ();
4392
4393         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4394            origin, and ditto for y.
4395         */
4396
4397         double mx = event->button.x;
4398         double my = event->button.y;
4399
4400         _line->grab_item().canvas_to_item (mx, my);
4401
4402         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4403
4404         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4405                 /* no adjacent points */
4406                 return;
4407         }
4408
4409         Drag::start_grab (event, _editor->cursors()->fader);
4410
4411         /* store grab start in item frame */
4412         double const bx = _line->nth (_before)->get_x();
4413         double const ax = _line->nth (_after)->get_x();
4414         double const click_ratio = (ax - mx) / (ax - bx);
4415
4416         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4417
4418         _fixed_grab_x = mx;
4419         _fixed_grab_y = cy;
4420
4421         double fraction = 1.0 - (cy / _line->height());
4422
4423         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4424 }
4425
4426 void
4427 LineDrag::motion (GdkEvent* event, bool first_move)
4428 {
4429         double dy = current_pointer_y() - last_pointer_y();
4430
4431         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4432                 dy *= 0.1;
4433         }
4434
4435         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4436
4437         _cumulative_y_drag = cy - _fixed_grab_y;
4438
4439         cy = max (0.0, cy);
4440         cy = min ((double) _line->height(), cy);
4441
4442         double const fraction = 1.0 - (cy / _line->height());
4443         uint32_t ignored;
4444
4445         if (first_move) {
4446                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4447
4448                 _editor->begin_reversible_command (_("automation range move"));
4449                 _line->start_drag_line (_before, _after, initial_fraction);
4450         }
4451
4452         /* we are ignoring x position for this drag, so we can just pass in anything */
4453         pair<double, float> result;
4454
4455         result = _line->drag_motion (0, fraction, true, false, ignored);
4456         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4457 }
4458
4459 void
4460 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4461 {
4462         if (movement_occurred) {
4463                 motion (event, false);
4464                 _line->end_drag (false, 0);
4465                 _editor->commit_reversible_command ();
4466         } else {
4467                 /* add a new control point on the line */
4468
4469                 AutomationTimeAxisView* atv;
4470
4471                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4472                         framepos_t where = grab_frame ();
4473
4474                         double cx = 0;
4475                         double cy = _fixed_grab_y;
4476
4477                         _line->grab_item().item_to_canvas (cx, cy);
4478
4479                         atv->add_automation_event (event, where, cy, false);
4480                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4481                         AudioRegionView* arv;
4482
4483                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4484                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4485                         }
4486                 }
4487         }
4488 }
4489
4490 void
4491 LineDrag::aborted (bool)
4492 {
4493         _line->reset ();
4494 }
4495
4496 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4497         : Drag (e, i),
4498           _line (0),
4499           _arv (0),
4500           _region_view_grab_x (0.0),
4501           _cumulative_x_drag (0),
4502           _before (0.0),
4503           _max_x (0)
4504 {
4505         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4506 }
4507
4508 void
4509 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4510 {
4511         Drag::start_grab (event);
4512
4513         _line = reinterpret_cast<Line*> (_item);
4514         assert (_line);
4515
4516         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4517
4518         double cx = event->button.x;
4519         double cy = event->button.y;
4520
4521         _item->parent()->canvas_to_item (cx, cy);
4522
4523         /* store grab start in parent frame */
4524         _region_view_grab_x = cx;
4525
4526         _before = *(float*) _item->get_data ("position");
4527
4528         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4529
4530         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4531 }
4532
4533 void
4534 FeatureLineDrag::motion (GdkEvent*, bool)
4535 {
4536         double dx = _drags->current_pointer_x() - last_pointer_x();
4537
4538         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4539
4540         _cumulative_x_drag += dx;
4541
4542         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4543
4544         if (cx > _max_x){
4545                 cx = _max_x;
4546         }
4547         else if(cx < 0){
4548                 cx = 0;
4549         }
4550
4551         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4552         assert (bbox);
4553         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4554
4555         float *pos = new float;
4556         *pos = cx;
4557
4558         _line->set_data ("position", pos);
4559
4560         _before = cx;
4561 }
4562
4563 void
4564 FeatureLineDrag::finished (GdkEvent*, bool)
4565 {
4566         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4567         _arv->update_transient(_before, _before);
4568 }
4569
4570 void
4571 FeatureLineDrag::aborted (bool)
4572 {
4573         //_line->reset ();
4574 }
4575
4576 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4577         : Drag (e, i)
4578         , _vertical_only (false)
4579 {
4580         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4581 }
4582
4583 void
4584 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4585 {
4586         Drag::start_grab (event);
4587         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4588 }
4589
4590 void
4591 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4592 {
4593         framepos_t start;
4594         framepos_t end;
4595         double y1;
4596         double y2;
4597
4598         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4599
4600         framepos_t grab = grab_frame ();
4601         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4602                 _editor->snap_to_with_modifier (grab, event);
4603         } else {
4604                 grab = raw_grab_frame ();
4605         }
4606
4607         /* base start and end on initial click position */
4608
4609         if (pf < grab) {
4610                 start = pf;
4611                 end = grab;
4612         } else {
4613                 end = pf;
4614                 start = grab;
4615         }
4616
4617         if (current_pointer_y() < grab_y()) {
4618                 y1 = current_pointer_y();
4619                 y2 = grab_y();
4620         } else {
4621                 y2 = current_pointer_y();
4622                 y1 = grab_y();
4623         }
4624
4625         if (start != end || y1 != y2) {
4626
4627                 double x1 = _editor->sample_to_pixel (start);
4628                 double x2 = _editor->sample_to_pixel (end);
4629                 const double min_dimension = 2.0;
4630
4631                 if (_vertical_only) {
4632                         /* fixed 10 pixel width */
4633                         x2 = x1 + 10;
4634                 } else {
4635                         if (x2 < x1) {
4636                                 x2 = min (x1 - min_dimension, x2);
4637                         } else {
4638                                 x2 = max (x1 + min_dimension, x2);
4639                         }
4640                 }
4641
4642                 if (y2 < y1) {
4643                         y2 = min (y1 - min_dimension, y2);
4644                 } else {
4645                         y2 = max (y1 + min_dimension, y2);
4646                 }
4647
4648                 /* translate rect into item space and set */
4649
4650                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4651
4652                 /* this drag is a _trackview_only == true drag, so the y1 and
4653                  * y2 (computed using current_pointer_y() and grab_y()) will be
4654                  * relative to the top of the trackview group). The
4655                  * rubberband rect has the same parent/scroll offset as the
4656                  * the trackview group, so we can use the "r" rect directly
4657                  * to set the shape of the rubberband.
4658                  */
4659
4660                 _editor->rubberband_rect->set (r);
4661                 _editor->rubberband_rect->show();
4662                 _editor->rubberband_rect->raise_to_top();
4663
4664                 show_verbose_cursor_time (pf);
4665
4666                 do_select_things (event, true);
4667         }
4668 }
4669
4670 void
4671 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4672 {
4673         framepos_t x1;
4674         framepos_t x2;
4675         framepos_t grab = grab_frame ();
4676         framepos_t lpf = last_pointer_frame ();
4677
4678         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4679                 grab = raw_grab_frame ();
4680                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4681         }
4682
4683         if (grab < lpf) {
4684                 x1 = grab;
4685                 x2 = lpf;
4686         } else {
4687                 x2 = grab;
4688                 x1 = lpf;
4689         }
4690
4691         double y1;
4692         double y2;
4693
4694         if (current_pointer_y() < grab_y()) {
4695                 y1 = current_pointer_y();
4696                 y2 = grab_y();
4697         } else {
4698                 y2 = current_pointer_y();
4699                 y1 = grab_y();
4700         }
4701
4702         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4703 }
4704
4705 void
4706 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4707 {
4708         if (movement_occurred) {
4709
4710                 motion (event, false);
4711                 do_select_things (event, false);
4712
4713         } else {
4714
4715                 /* just a click */
4716
4717                 bool do_deselect = true;
4718                 MidiTimeAxisView* mtv;
4719
4720                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4721                         /* MIDI track */
4722                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4723                                 /* nothing selected */
4724                                 add_midi_region (mtv, true);
4725                                 do_deselect = false;
4726                         }
4727                 }
4728
4729                 /* do not deselect if Primary or Tertiary (toggle-select or
4730                  * extend-select are pressed.
4731                  */
4732
4733                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4734                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4735                     do_deselect) {
4736                         deselect_things ();
4737                 }
4738
4739         }
4740
4741         _editor->rubberband_rect->hide();
4742 }
4743
4744 void
4745 RubberbandSelectDrag::aborted (bool)
4746 {
4747         _editor->rubberband_rect->hide ();
4748 }
4749
4750 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4751         : RegionDrag (e, i, p, v)
4752 {
4753         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4754 }
4755
4756 void
4757 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4758 {
4759         Drag::start_grab (event, cursor);
4760
4761         _editor->get_selection().add (_primary);
4762
4763         framepos_t where = _primary->region()->position();
4764         setup_snap_delta (where);
4765
4766         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4767 }
4768
4769 void
4770 TimeFXDrag::motion (GdkEvent* event, bool)
4771 {
4772         RegionView* rv = _primary;
4773         StreamView* cv = rv->get_time_axis_view().view ();
4774
4775         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4776         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4777         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4778         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4779         _editor->snap_to_with_modifier (pf, event);
4780         pf -= snap_delta (event->button.state);
4781
4782         if (pf > rv->region()->position()) {
4783                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4784         }
4785
4786         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4787 }
4788
4789 void
4790 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4791 {
4792         /* this may have been a single click, no drag. We still want the dialog
4793            to show up in that case, so that the user can manually edit the
4794            parameters for the timestretch.
4795         */
4796
4797         float fraction = 1.0;
4798
4799         if (movement_occurred) {
4800
4801                 motion (event, false);
4802
4803                 _primary->get_time_axis_view().hide_timestretch ();
4804
4805                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4806
4807                 if (adjusted_frame_pos < _primary->region()->position()) {
4808                         /* backwards drag of the left edge - not usable */
4809                         return;
4810                 }
4811
4812                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4813
4814                 fraction = (double) newlen / (double) _primary->region()->length();
4815
4816 #ifndef USE_RUBBERBAND
4817                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4818                 if (_primary->region()->data_type() == DataType::AUDIO) {
4819                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4820                 }
4821 #endif
4822         }
4823
4824         if (!_editor->get_selection().regions.empty()) {
4825                 /* primary will already be included in the selection, and edit
4826                    group shared editing will propagate selection across
4827                    equivalent regions, so just use the current region
4828                    selection.
4829                 */
4830
4831                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4832                         error << _("An error occurred while executing time stretch operation") << endmsg;
4833                 }
4834         }
4835 }
4836
4837 void
4838 TimeFXDrag::aborted (bool)
4839 {
4840         _primary->get_time_axis_view().hide_timestretch ();
4841 }
4842
4843 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4844         : Drag (e, i)
4845 {
4846         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4847 }
4848
4849 void
4850 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4851 {
4852         Drag::start_grab (event);
4853 }
4854
4855 void
4856 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4857 {
4858         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4859 }
4860
4861 void
4862 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4863 {
4864         if (movement_occurred && _editor->session()) {
4865                 /* make sure we stop */
4866                 _editor->session()->request_transport_speed (0.0);
4867         }
4868 }
4869
4870 void
4871 ScrubDrag::aborted (bool)
4872 {
4873         /* XXX: TODO */
4874 }
4875
4876 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4877         : Drag (e, i)
4878         , _operation (o)
4879         , _add (false)
4880         , _time_selection_at_start (!_editor->get_selection().time.empty())
4881 {
4882         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4883
4884         if (_time_selection_at_start) {
4885                 start_at_start = _editor->get_selection().time.start();
4886                 end_at_start = _editor->get_selection().time.end_frame();
4887         }
4888 }
4889
4890 void
4891 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4892 {
4893         if (_editor->session() == 0) {
4894                 return;
4895         }
4896
4897         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4898
4899         switch (_operation) {
4900         case CreateSelection:
4901                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4902                         _add = true;
4903                 } else {
4904                         _add = false;
4905                 }
4906                 cursor = _editor->cursors()->selector;
4907                 Drag::start_grab (event, cursor);
4908                 break;
4909
4910         case SelectionStartTrim:
4911                 if (_editor->clicked_axisview) {
4912                         _editor->clicked_axisview->order_selection_trims (_item, true);
4913                 }
4914                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4915                 break;
4916
4917         case SelectionEndTrim:
4918                 if (_editor->clicked_axisview) {
4919                         _editor->clicked_axisview->order_selection_trims (_item, false);
4920                 }
4921                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4922                 break;
4923
4924         case SelectionMove:
4925                 Drag::start_grab (event, cursor);
4926                 break;
4927
4928         case SelectionExtend:
4929                 Drag::start_grab (event, cursor);
4930                 break;
4931         }
4932
4933         if (_operation == SelectionMove) {
4934                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4935         } else {
4936                 show_verbose_cursor_time (adjusted_current_frame (event));
4937         }
4938 }
4939
4940 void
4941 SelectionDrag::setup_pointer_frame_offset ()
4942 {
4943         switch (_operation) {
4944         case CreateSelection:
4945                 _pointer_frame_offset = 0;
4946                 break;
4947
4948         case SelectionStartTrim:
4949         case SelectionMove:
4950                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4951                 break;
4952
4953         case SelectionEndTrim:
4954                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4955                 break;
4956
4957         case SelectionExtend:
4958                 break;
4959         }
4960 }
4961
4962 void
4963 SelectionDrag::motion (GdkEvent* event, bool first_move)
4964 {
4965         framepos_t start = 0;
4966         framepos_t end = 0;
4967         framecnt_t length = 0;
4968         framecnt_t distance = 0;
4969
4970         framepos_t const pending_position = adjusted_current_frame (event);
4971
4972         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4973                 return;
4974         }
4975
4976         switch (_operation) {
4977         case CreateSelection:
4978         {
4979                 framepos_t grab = grab_frame ();
4980
4981                 if (first_move) {
4982                         grab = adjusted_current_frame (event, false);
4983                         if (grab < pending_position) {
4984                                 _editor->snap_to (grab, RoundDownMaybe);
4985                         }  else {
4986                                 _editor->snap_to (grab, RoundUpMaybe);
4987                         }
4988                 }
4989
4990                 if (pending_position < grab) {
4991                         start = pending_position;
4992                         end = grab;
4993                 } else {
4994                         end = pending_position;
4995                         start = grab;
4996                 }
4997
4998                 /* first drag: Either add to the selection
4999                    or create a new selection
5000                 */
5001
5002                 if (first_move) {
5003
5004                         if (_add) {
5005
5006                                 /* adding to the selection */
5007                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5008                                 _editor->clicked_selection = _editor->selection->add (start, end);
5009                                 _add = false;
5010
5011                         } else {
5012
5013                                 /* new selection */
5014
5015                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5016                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5017                                 }
5018
5019                                 _editor->clicked_selection = _editor->selection->set (start, end);
5020                         }
5021                 }
5022
5023                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5024                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5025                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5026                 if (atest) {
5027                         _editor->selection->add (atest);
5028                         break;
5029                 }
5030
5031                 /* select all tracks within the rectangle that we've marked out so far */
5032                 TrackViewList new_selection;
5033                 TrackViewList& all_tracks (_editor->track_views);
5034
5035                 ArdourCanvas::Coord const top = grab_y();
5036                 ArdourCanvas::Coord const bottom = current_pointer_y();
5037
5038                 if (top >= 0 && bottom >= 0) {
5039
5040                         //first, find the tracks that are covered in the y range selection
5041                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5042                                 if ((*i)->covered_by_y_range (top, bottom)) {
5043                                         new_selection.push_back (*i);
5044                                 }
5045                         }
5046
5047                         //now find any tracks that are GROUPED with the tracks we selected
5048                         TrackViewList grouped_add = new_selection;
5049                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5050                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5051                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5052                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5053                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5054                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5055                                                         grouped_add.push_back (*j);
5056                                         }
5057                                 }
5058                         }
5059
5060                         //now compare our list with the current selection, and add or remove as necessary
5061                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5062                         TrackViewList tracks_to_add;
5063                         TrackViewList tracks_to_remove;
5064                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5065                                 if ( !_editor->selection->tracks.contains ( *i ) )
5066                                         tracks_to_add.push_back ( *i );
5067                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5068                                 if ( !grouped_add.contains ( *i ) )
5069                                         tracks_to_remove.push_back ( *i );
5070                         _editor->selection->add(tracks_to_add);
5071                         _editor->selection->remove(tracks_to_remove);
5072
5073                 }
5074         }
5075         break;
5076
5077         case SelectionStartTrim:
5078
5079                 end = _editor->selection->time[_editor->clicked_selection].end;
5080
5081                 if (pending_position > end) {
5082                         start = end;
5083                 } else {
5084                         start = pending_position;
5085                 }
5086                 break;
5087
5088         case SelectionEndTrim:
5089
5090                 start = _editor->selection->time[_editor->clicked_selection].start;
5091
5092                 if (pending_position < start) {
5093                         end = start;
5094                 } else {
5095                         end = pending_position;
5096                 }
5097
5098                 break;
5099
5100         case SelectionMove:
5101
5102                 start = _editor->selection->time[_editor->clicked_selection].start;
5103                 end = _editor->selection->time[_editor->clicked_selection].end;
5104
5105                 length = end - start;
5106                 distance = pending_position - start;
5107                 start = pending_position;
5108                 _editor->snap_to (start);
5109
5110                 end = start + length;
5111
5112                 break;
5113
5114         case SelectionExtend:
5115                 break;
5116         }
5117
5118         if (start != end) {
5119                 switch (_operation) {
5120                 case SelectionMove:
5121                         if (_time_selection_at_start) {
5122                                 _editor->selection->move_time (distance);
5123                         }
5124                         break;
5125                 default:
5126                         _editor->selection->replace (_editor->clicked_selection, start, end);
5127                 }
5128         }
5129
5130         if (_operation == SelectionMove) {
5131                 show_verbose_cursor_time(start);
5132         } else {
5133                 show_verbose_cursor_time(pending_position);
5134         }
5135 }
5136
5137 void
5138 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5139 {
5140         Session* s = _editor->session();
5141
5142         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5143         if (movement_occurred) {
5144                 motion (event, false);
5145                 /* XXX this is not object-oriented programming at all. ick */
5146                 if (_editor->selection->time.consolidate()) {
5147                         _editor->selection->TimeChanged ();
5148                 }
5149
5150                 /* XXX what if its a music time selection? */
5151                 if (s) {
5152                         if (s->get_play_range() && s->transport_rolling()) {
5153                                 s->request_play_range (&_editor->selection->time, true);
5154                         } else if (!s->config.get_external_sync()) {
5155                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5156                                         if (_operation == SelectionEndTrim)
5157                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5158                                         else
5159                                                 s->request_locate (_editor->get_selection().time.start());
5160                                 }
5161                         }
5162
5163                         if (_editor->get_selection().time.length() != 0) {
5164                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5165                         } else {
5166                                 s->clear_range_selection ();
5167                         }
5168                 }
5169
5170         } else {
5171                 /* just a click, no pointer movement.
5172                  */
5173
5174                 if (_operation == SelectionExtend) {
5175                         if (_time_selection_at_start) {
5176                                 framepos_t pos = adjusted_current_frame (event, false);
5177                                 framepos_t start = min (pos, start_at_start);
5178                                 framepos_t end = max (pos, end_at_start);
5179                                 _editor->selection->set (start, end);
5180                         }
5181                 } else {
5182                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5183                                 if (_editor->clicked_selection) {
5184                                         _editor->selection->remove (_editor->clicked_selection);
5185                                 }
5186                         } else {
5187                                 if (!_editor->clicked_selection) {
5188                                         _editor->selection->clear_time();
5189                                 }
5190                         }
5191                 }
5192
5193                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5194                         _editor->selection->set (_editor->clicked_axisview);
5195                 }
5196
5197                 if (s && s->get_play_range () && s->transport_rolling()) {
5198                         s->request_stop (false, false);
5199                 }
5200
5201         }
5202
5203         _editor->stop_canvas_autoscroll ();
5204         _editor->clicked_selection = 0;
5205         _editor->commit_reversible_selection_op ();
5206 }
5207
5208 void
5209 SelectionDrag::aborted (bool)
5210 {
5211         /* XXX: TODO */
5212 }
5213
5214 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5215         : Drag (e, i, false),
5216           _operation (o),
5217           _copy (false)
5218 {
5219         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5220
5221         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5222                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5223                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5224         _drag_rect->hide ();
5225
5226         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5227         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5228 }
5229
5230 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5231 {
5232         /* normal canvas items will be cleaned up when their parent group is deleted. But
5233            this item is created as the child of a long-lived parent group, and so we
5234            need to explicitly delete it.
5235         */
5236         delete _drag_rect;
5237 }
5238
5239 void
5240 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5241 {
5242         if (_editor->session() == 0) {
5243                 return;
5244         }
5245
5246         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5247
5248         if (!_editor->temp_location) {
5249                 _editor->temp_location = new Location (*_editor->session());
5250         }
5251
5252         switch (_operation) {
5253         case CreateSkipMarker:
5254         case CreateRangeMarker:
5255         case CreateTransportMarker:
5256         case CreateCDMarker:
5257
5258                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5259                         _copy = true;
5260                 } else {
5261                         _copy = false;
5262                 }
5263                 cursor = _editor->cursors()->selector;
5264                 break;
5265         }
5266
5267         Drag::start_grab (event, cursor);
5268
5269         show_verbose_cursor_time (adjusted_current_frame (event));
5270 }
5271
5272 void
5273 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5274 {
5275         framepos_t start = 0;
5276         framepos_t end = 0;
5277         ArdourCanvas::Rectangle *crect;
5278
5279         switch (_operation) {
5280         case CreateSkipMarker:
5281                 crect = _editor->range_bar_drag_rect;
5282                 break;
5283         case CreateRangeMarker:
5284                 crect = _editor->range_bar_drag_rect;
5285                 break;
5286         case CreateTransportMarker:
5287                 crect = _editor->transport_bar_drag_rect;
5288                 break;
5289         case CreateCDMarker:
5290                 crect = _editor->cd_marker_bar_drag_rect;
5291                 break;
5292         default:
5293                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5294                 return;
5295                 break;
5296         }
5297
5298         framepos_t const pf = adjusted_current_frame (event);
5299
5300         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5301                 framepos_t grab = grab_frame ();
5302                 _editor->snap_to (grab);
5303
5304                 if (pf < grab_frame()) {
5305                         start = pf;
5306                         end = grab;
5307                 } else {
5308                         end = pf;
5309                         start = grab;
5310                 }
5311
5312                 /* first drag: Either add to the selection
5313                    or create a new selection.
5314                 */
5315
5316                 if (first_move) {
5317
5318                         _editor->temp_location->set (start, end);
5319
5320                         crect->show ();
5321
5322                         update_item (_editor->temp_location);
5323                         _drag_rect->show();
5324                         //_drag_rect->raise_to_top();
5325
5326                 }
5327         }
5328
5329         if (start != end) {
5330                 _editor->temp_location->set (start, end);
5331
5332                 double x1 = _editor->sample_to_pixel (start);
5333                 double x2 = _editor->sample_to_pixel (end);
5334                 crect->set_x0 (x1);
5335                 crect->set_x1 (x2);
5336
5337                 update_item (_editor->temp_location);
5338         }
5339
5340         show_verbose_cursor_time (pf);
5341
5342 }
5343
5344 void
5345 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5346 {
5347         Location * newloc = 0;
5348         string rangename;
5349         int flags;
5350
5351         if (movement_occurred) {
5352                 motion (event, false);
5353                 _drag_rect->hide();
5354
5355                 switch (_operation) {
5356                 case CreateSkipMarker:
5357                 case CreateRangeMarker:
5358                 case CreateCDMarker:
5359                     {
5360                         XMLNode &before = _editor->session()->locations()->get_state();
5361                         if (_operation == CreateSkipMarker) {
5362                                 _editor->begin_reversible_command (_("new skip marker"));
5363                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5364                                 flags = Location::IsRangeMarker | Location::IsSkip;
5365                                 _editor->range_bar_drag_rect->hide();
5366                         } else if (_operation == CreateCDMarker) {
5367                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5368                                 _editor->begin_reversible_command (_("new CD marker"));
5369                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5370                                 _editor->cd_marker_bar_drag_rect->hide();
5371                         } else {
5372                                 _editor->begin_reversible_command (_("new skip marker"));
5373                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5374                                 flags = Location::IsRangeMarker;
5375                                 _editor->range_bar_drag_rect->hide();
5376                         }
5377                         newloc = new Location (
5378                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5379                                 );
5380
5381                         _editor->session()->locations()->add (newloc, true);
5382                         XMLNode &after = _editor->session()->locations()->get_state();
5383                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5384                         _editor->commit_reversible_command ();
5385                         break;
5386                     }
5387
5388                 case CreateTransportMarker:
5389                         // popup menu to pick loop or punch
5390                         _editor->new_transport_marker_context_menu (&event->button, _item);
5391                         break;
5392                 }
5393
5394         } else {
5395
5396                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5397
5398                 if (_operation == CreateTransportMarker) {
5399
5400                         /* didn't drag, so just locate */
5401
5402                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5403
5404                 } else if (_operation == CreateCDMarker) {
5405
5406                         /* didn't drag, but mark is already created so do
5407                          * nothing */
5408
5409                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5410
5411                         framepos_t start;
5412                         framepos_t end;
5413
5414                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5415
5416                         if (end == max_framepos) {
5417                                 end = _editor->session()->current_end_frame ();
5418                         }
5419
5420                         if (start == max_framepos) {
5421                                 start = _editor->session()->current_start_frame ();
5422                         }
5423
5424                         switch (_editor->mouse_mode) {
5425                         case MouseObject:
5426                                 /* find the two markers on either side and then make the selection from it */
5427                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5428                                 break;
5429
5430                         case MouseRange:
5431                                 /* find the two markers on either side of the click and make the range out of it */
5432                                 _editor->selection->set (start, end);
5433                                 break;
5434
5435                         default:
5436                                 break;
5437                         }
5438                 }
5439         }
5440
5441         _editor->stop_canvas_autoscroll ();
5442 }
5443
5444 void
5445 RangeMarkerBarDrag::aborted (bool movement_occurred)
5446 {
5447         if (movement_occurred) {
5448                 _drag_rect->hide ();
5449         }
5450 }
5451
5452 void
5453 RangeMarkerBarDrag::update_item (Location* location)
5454 {
5455         double const x1 = _editor->sample_to_pixel (location->start());
5456         double const x2 = _editor->sample_to_pixel (location->end());
5457
5458         _drag_rect->set_x0 (x1);
5459         _drag_rect->set_x1 (x2);
5460 }
5461
5462 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5463         : Drag (e, i)
5464         , _cumulative_dx (0)
5465         , _cumulative_dy (0)
5466         , _was_selected (false)
5467 {
5468         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5469
5470         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5471         assert (_primary);
5472         _region = &_primary->region_view ();
5473         _note_height = _region->midi_stream_view()->note_height ();
5474 }
5475
5476 void
5477 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5478 {
5479         Drag::start_grab (event);
5480         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5481
5482         if (!(_was_selected = _primary->selected())) {
5483
5484                 /* tertiary-click means extend selection - we'll do that on button release,
5485                    so don't add it here, because otherwise we make it hard to figure
5486                    out the "extend-to" range.
5487                 */
5488
5489                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5490
5491                 if (!extend) {
5492                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5493
5494                         if (add) {
5495                                 _region->note_selected (_primary, true);
5496                         } else {
5497                                 _editor->get_selection().clear_points();
5498                                 _region->unique_select (_primary);
5499                         }
5500                 }
5501         }
5502 }
5503
5504 /** @return Current total drag x change in frames */
5505 frameoffset_t
5506 NoteDrag::total_dx (const guint state) const
5507 {
5508         /* dx in frames */
5509         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5510
5511         /* primary note time */
5512         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5513
5514         /* new time of the primary note in session frames */
5515         frameoffset_t st = n + dx + snap_delta (state);
5516
5517         framepos_t const rp = _region->region()->position ();
5518
5519         /* prevent the note being dragged earlier than the region's position */
5520         st = max (st, rp);
5521
5522         /* possibly snap and return corresponding delta */
5523
5524         bool snap = true;
5525
5526         if (ArdourKeyboard::indicates_snap (state)) {
5527                 if (_editor->snap_mode () != SnapOff) {
5528                         snap = false;
5529                 }
5530         } else {
5531                 if (_editor->snap_mode () == SnapOff) {
5532                         snap = false;
5533                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5534                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5535                                 snap = true;
5536                         }
5537                 }
5538         }
5539
5540         frameoffset_t ret;
5541         if (snap) {
5542                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5543                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5544         } else {
5545                 ret = st - n - snap_delta (state);
5546         }
5547         return ret;
5548 }
5549
5550 /** @return Current total drag y change in note number */
5551 int8_t
5552 NoteDrag::total_dy () const
5553 {
5554         MidiStreamView* msv = _region->midi_stream_view ();
5555         double const y = _region->midi_view()->y_position ();
5556         /* new current note */
5557         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5558         /* clamp */
5559         n = max (msv->lowest_note(), n);
5560         n = min (msv->highest_note(), n);
5561         /* and work out delta */
5562         return n - msv->y_to_note (grab_y() - y);
5563 }
5564
5565 void
5566 NoteDrag::motion (GdkEvent * event, bool)
5567 {
5568         /* Total change in x and y since the start of the drag */
5569         frameoffset_t const dx = total_dx (event->button.state);
5570         int8_t const dy = total_dy ();
5571
5572         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5573         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5574         double const tdy = -dy * _note_height - _cumulative_dy;
5575
5576         if (tdx || tdy) {
5577                 _cumulative_dx += tdx;
5578                 _cumulative_dy += tdy;
5579
5580                 int8_t note_delta = total_dy();
5581
5582                 _region->move_selection (tdx, tdy, note_delta);
5583
5584                 /* the new note value may be the same as the old one, but we
5585                  * don't know what that means because the selection may have
5586                  * involved more than one note and we might be doing something
5587                  * odd with them. so show the note value anyway, always.
5588                  */
5589
5590                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5591
5592                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5593         }
5594 }
5595
5596 void
5597 NoteDrag::finished (GdkEvent* ev, bool moved)
5598 {
5599         if (!moved) {
5600                 /* no motion - select note */
5601
5602                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5603                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5604
5605                         bool changed = false;
5606
5607                         if (_was_selected) {
5608                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5609                                 if (add) {
5610                                         _region->note_deselected (_primary);
5611                                         changed = true;
5612                                 } else {
5613                                         _editor->get_selection().clear_points();
5614                                         _region->unique_select (_primary);
5615                                         changed = true;
5616                                 }
5617                         } else {
5618                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5619                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5620
5621                                 if (!extend && !add && _region->selection_size() > 1) {
5622                                         _editor->get_selection().clear_points();
5623                                         _region->unique_select (_primary);
5624                                         changed = true;
5625                                 } else if (extend) {
5626                                         _region->note_selected (_primary, true, true);
5627                                         changed = true;
5628                                 } else {
5629                                         /* it was added during button press */
5630                                         changed = true;
5631
5632                                 }
5633                         }
5634
5635                         if (changed) {
5636                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5637                                 _editor->commit_reversible_selection_op();
5638                         }
5639                 }
5640         } else {
5641                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5642         }
5643 }
5644
5645 void
5646 NoteDrag::aborted (bool)
5647 {
5648         /* XXX: TODO */
5649 }
5650
5651 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5652 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5653         : Drag (editor, atv->base_item ())
5654         , _ranges (r)
5655         , _y_origin (atv->y_position())
5656         , _nothing_to_drag (false)
5657 {
5658         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5659         setup (atv->lines ());
5660 }
5661
5662 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5663 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5664         : Drag (editor, rv->get_canvas_group ())
5665         , _ranges (r)
5666         , _y_origin (rv->get_time_axis_view().y_position())
5667         , _nothing_to_drag (false)
5668         , _integral (false)
5669 {
5670         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5671
5672         list<boost::shared_ptr<AutomationLine> > lines;
5673
5674         AudioRegionView*      audio_view;
5675         AutomationRegionView* automation_view;
5676         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5677                 lines.push_back (audio_view->get_gain_line ());
5678         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5679                 lines.push_back (automation_view->line ());
5680                 _integral = true;
5681         } else {
5682                 error << _("Automation range drag created for invalid region type") << endmsg;
5683         }
5684
5685         setup (lines);
5686 }
5687
5688 /** @param lines AutomationLines to drag.
5689  *  @param offset Offset from the session start to the points in the AutomationLines.
5690  */
5691 void
5692 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5693 {
5694         /* find the lines that overlap the ranges being dragged */
5695         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5696         while (i != lines.end ()) {
5697                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5698                 ++j;
5699
5700                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5701
5702                 /* check this range against all the AudioRanges that we are using */
5703                 list<AudioRange>::const_iterator k = _ranges.begin ();
5704                 while (k != _ranges.end()) {
5705                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5706                                 break;
5707                         }
5708                         ++k;
5709                 }
5710
5711                 /* add it to our list if it overlaps at all */
5712                 if (k != _ranges.end()) {
5713                         Line n;
5714                         n.line = *i;
5715                         n.state = 0;
5716                         n.range = r;
5717                         _lines.push_back (n);
5718                 }
5719
5720                 i = j;
5721         }
5722
5723         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5724 }
5725
5726 double
5727 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5728 {
5729         return 1.0 - ((global_y - _y_origin) / line->height());
5730 }
5731
5732 double
5733 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5734 {
5735         const double v = list->eval(x);
5736         return _integral ? rint(v) : v;
5737 }
5738
5739 void
5740 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5741 {
5742         Drag::start_grab (event, cursor);
5743
5744         /* Get line states before we start changing things */
5745         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5746                 i->state = &i->line->get_state ();
5747                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5748         }
5749
5750         if (_ranges.empty()) {
5751
5752                 /* No selected time ranges: drag all points */
5753                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5754                         uint32_t const N = i->line->npoints ();
5755                         for (uint32_t j = 0; j < N; ++j) {
5756                                 i->points.push_back (i->line->nth (j));
5757                         }
5758                 }
5759
5760         }
5761
5762         if (_nothing_to_drag) {
5763                 return;
5764         }
5765 }
5766
5767 void
5768 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5769 {
5770         if (_nothing_to_drag && !first_move) {
5771                 return;
5772         }
5773
5774         if (first_move) {
5775                 _editor->begin_reversible_command (_("automation range move"));
5776
5777                 if (!_ranges.empty()) {
5778
5779                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5780
5781                                 framecnt_t const half = (i->start + i->end) / 2;
5782
5783                                 /* find the line that this audio range starts in */
5784                                 list<Line>::iterator j = _lines.begin();
5785                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5786                                         ++j;
5787                                 }
5788
5789                                 if (j != _lines.end()) {
5790                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5791
5792                                 /* j is the line that this audio range starts in; fade into it;
5793                                    64 samples length plucked out of thin air.
5794                                 */
5795
5796                                         framepos_t a = i->start + 64;
5797                                         if (a > half) {
5798                                                 a = half;
5799                                         }
5800
5801                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5802                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5803
5804                                         XMLNode &before = the_list->get_state();
5805                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5806                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5807
5808                                         if (add_p || add_q) {
5809                                                 _editor->session()->add_command (
5810                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5811                                         }
5812                                 }
5813
5814                                 /* same thing for the end */
5815
5816                                 j = _lines.begin();
5817                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5818                                         ++j;
5819                                 }
5820
5821                                 if (j != _lines.end()) {
5822                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5823
5824                                         /* j is the line that this audio range starts in; fade out of it;
5825                                            64 samples length plucked out of thin air.
5826                                         */
5827
5828                                         framepos_t b = i->end - 64;
5829                                         if (b < half) {
5830                                                 b = half;
5831                                         }
5832
5833                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5834                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5835
5836                                         XMLNode &before = the_list->get_state();
5837                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5838                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5839
5840                                         if (add_p || add_q) {
5841                                                 _editor->session()->add_command (
5842                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5843                                         }
5844                                 }
5845                         }
5846
5847                         _nothing_to_drag = true;
5848
5849                         /* Find all the points that should be dragged and put them in the relevant
5850                            points lists in the Line structs.
5851                         */
5852
5853                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5854
5855                                 uint32_t const N = i->line->npoints ();
5856                                 for (uint32_t j = 0; j < N; ++j) {
5857
5858                                         /* here's a control point on this line */
5859                                         ControlPoint* p = i->line->nth (j);
5860                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5861
5862                                         /* see if it's inside a range */
5863                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5864                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5865                                                 ++k;
5866                                         }
5867
5868                                         if (k != _ranges.end()) {
5869                                                 /* dragging this point */
5870                                                 _nothing_to_drag = false;
5871                                                 i->points.push_back (p);
5872                                         }
5873                                 }
5874                         }
5875                 }
5876
5877                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5878                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5879                 }
5880         }
5881
5882         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5883                 float const f = y_fraction (l->line, current_pointer_y());
5884                 /* we are ignoring x position for this drag, so we can just pass in anything */
5885                 pair<double, float> result;
5886                 uint32_t ignored;
5887                 result = l->line->drag_motion (0, f, true, false, ignored);
5888                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5889         }
5890 }
5891
5892 void
5893 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5894 {
5895         if (_nothing_to_drag || !motion_occurred) {
5896                 return;
5897         }
5898
5899         motion (event, false);
5900         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5901                 i->line->end_drag (false, 0);
5902         }
5903
5904         _editor->commit_reversible_command ();
5905 }
5906
5907 void
5908 AutomationRangeDrag::aborted (bool)
5909 {
5910         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5911                 i->line->reset ();
5912         }
5913 }
5914
5915 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5916         : view (v)
5917         , initial_time_axis_view (itav)
5918 {
5919         /* note that time_axis_view may be null if the regionview was created
5920          * as part of a copy operation.
5921          */
5922         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5923         layer = v->region()->layer ();
5924         initial_y = v->get_canvas_group()->position().y;
5925         initial_playlist = v->region()->playlist ();
5926         initial_position = v->region()->position ();
5927         initial_end = v->region()->position () + v->region()->length ();
5928 }
5929
5930 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5931         : Drag (e, i->canvas_item ())
5932         , _region_view (r)
5933         , _patch_change (i)
5934         , _cumulative_dx (0)
5935 {
5936         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5937                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5938                                                    grab_frame()));
5939 }
5940
5941 void
5942 PatchChangeDrag::motion (GdkEvent* ev, bool)
5943 {
5944         framepos_t f = adjusted_current_frame (ev);
5945         boost::shared_ptr<Region> r = _region_view->region ();
5946         f = max (f, r->position ());
5947         f = min (f, r->last_frame ());
5948
5949         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5950         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5951         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5952         _cumulative_dx = dxu;
5953 }
5954
5955 void
5956 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5957 {
5958         if (!movement_occurred) {
5959                 return;
5960         }
5961
5962         boost::shared_ptr<Region> r (_region_view->region ());
5963         framepos_t f = adjusted_current_frame (ev);
5964         f = max (f, r->position ());
5965         f = min (f, r->last_frame ());
5966
5967         _region_view->move_patch_change (
5968                 *_patch_change,
5969                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5970                 );
5971 }
5972
5973 void
5974 PatchChangeDrag::aborted (bool)
5975 {
5976         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5977 }
5978
5979 void
5980 PatchChangeDrag::setup_pointer_frame_offset ()
5981 {
5982         boost::shared_ptr<Region> region = _region_view->region ();
5983         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5984 }
5985
5986 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5987         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5988         , _region_view (rv)
5989 {
5990
5991 }
5992
5993 void
5994 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5995 {
5996         _region_view->update_drag_selection (
5997                 x1, x2, y1, y2,
5998                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5999 }
6000
6001 void
6002 MidiRubberbandSelectDrag::deselect_things ()
6003 {
6004         /* XXX */
6005 }
6006
6007 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6008         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6009         , _region_view (rv)
6010 {
6011         _vertical_only = true;
6012 }
6013
6014 void
6015 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6016 {
6017         double const y = _region_view->midi_view()->y_position ();
6018
6019         y1 = max (0.0, y1 - y);
6020         y2 = max (0.0, y2 - y);
6021
6022         _region_view->update_vertical_drag_selection (
6023                 y1,
6024                 y2,
6025                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6026                 );
6027 }
6028
6029 void
6030 MidiVerticalSelectDrag::deselect_things ()
6031 {
6032         /* XXX */
6033 }
6034
6035 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6036         : RubberbandSelectDrag (e, i)
6037 {
6038
6039 }
6040
6041 void
6042 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6043 {
6044         if (drag_in_progress) {
6045                 /* We just want to select things at the end of the drag, not during it */
6046                 return;
6047         }
6048
6049         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6050
6051         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6052
6053         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6054
6055         _editor->commit_reversible_selection_op ();
6056 }
6057
6058 void
6059 EditorRubberbandSelectDrag::deselect_things ()
6060 {
6061         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6062
6063         _editor->selection->clear_tracks();
6064         _editor->selection->clear_regions();
6065         _editor->selection->clear_points ();
6066         _editor->selection->clear_lines ();
6067         _editor->selection->clear_midi_notes ();
6068
6069         _editor->commit_reversible_selection_op();
6070 }
6071
6072 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6073         : Drag (e, i)
6074         , _region_view (rv)
6075         , _drag_rect (0)
6076 {
6077         _note[0] = _note[1] = 0;
6078 }
6079
6080 NoteCreateDrag::~NoteCreateDrag ()
6081 {
6082         delete _drag_rect;
6083 }
6084
6085 framecnt_t
6086 NoteCreateDrag::grid_frames (framepos_t t) const
6087 {
6088         bool success;
6089         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6090         if (!success) {
6091                 grid_beats = Evoral::Beats(1);
6092         }
6093
6094         return _region_view->region_beats_to_region_frames (grid_beats);
6095 }
6096
6097 void
6098 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6099 {
6100         Drag::start_grab (event, cursor);
6101
6102         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6103
6104         framepos_t pf = _drags->current_pointer_frame ();
6105         framecnt_t const g = grid_frames (pf);
6106
6107         /* Hack so that we always snap to the note that we are over, instead of snapping
6108            to the next one if we're more than halfway through the one we're over.
6109         */
6110         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6111                 pf -= g / 2;
6112         }
6113
6114         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6115         _note[1] = _note[0];
6116
6117         MidiStreamView* sv = _region_view->midi_stream_view ();
6118         double const x = _editor->sample_to_pixel (_note[0]);
6119         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6120
6121         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6122         _drag_rect->set_outline_all ();
6123         _drag_rect->set_outline_color (0xffffff99);
6124         _drag_rect->set_fill_color (0xffffff66);
6125 }
6126
6127 void
6128 NoteCreateDrag::motion (GdkEvent* event, bool)
6129 {
6130         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6131         double const x0 = _editor->sample_to_pixel (_note[0]);
6132         double const x1 = _editor->sample_to_pixel (_note[1]);
6133         _drag_rect->set_x0 (std::min(x0, x1));
6134         _drag_rect->set_x1 (std::max(x0, x1));
6135 }
6136
6137 void
6138 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6139 {
6140         if (!had_movement) {
6141                 return;
6142         }
6143
6144         framepos_t const start = min (_note[0], _note[1]);
6145         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6146
6147         framecnt_t const g = grid_frames (start);
6148         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6149
6150         if (_editor->snap_mode() == SnapNormal && length < g) {
6151                 length = g;
6152         }
6153
6154         Evoral::Beats length_beats = max (
6155                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6156
6157         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6158 }
6159
6160 double
6161 NoteCreateDrag::y_to_region (double y) const
6162 {
6163         double x = 0;
6164         _region_view->get_canvas_group()->canvas_to_item (x, y);
6165         return y;
6166 }
6167
6168 void
6169 NoteCreateDrag::aborted (bool)
6170 {
6171
6172 }
6173
6174 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6175         : Drag (e, i)
6176         , arv (rv)
6177         , start (start_yn)
6178 {
6179         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6180 }
6181
6182 void
6183 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6184 {
6185         Drag::start_grab (event, cursor);
6186 }
6187
6188 void
6189 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6190 {
6191         double distance;
6192         double new_length;
6193         framecnt_t len;
6194
6195         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6196
6197         if (start) {
6198                 distance = _drags->current_pointer_x() - grab_x();
6199                 len = ar->fade_in()->back()->when;
6200         } else {
6201                 distance = grab_x() - _drags->current_pointer_x();
6202                 len = ar->fade_out()->back()->when;
6203         }
6204
6205         /* how long should it be ? */
6206
6207         new_length = len + _editor->pixel_to_sample (distance);
6208
6209         /* now check with the region that this is legal */
6210
6211         new_length = ar->verify_xfade_bounds (new_length, start);
6212
6213         if (start) {
6214                 arv->reset_fade_in_shape_width (ar, new_length);
6215         } else {
6216                 arv->reset_fade_out_shape_width (ar, new_length);
6217         }
6218 }
6219
6220 void
6221 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6222 {
6223         double distance;
6224         double new_length;
6225         framecnt_t len;
6226
6227         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6228
6229         if (start) {
6230                 distance = _drags->current_pointer_x() - grab_x();
6231                 len = ar->fade_in()->back()->when;
6232         } else {
6233                 distance = grab_x() - _drags->current_pointer_x();
6234                 len = ar->fade_out()->back()->when;
6235         }
6236
6237         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6238
6239         _editor->begin_reversible_command ("xfade trim");
6240         ar->playlist()->clear_owned_changes ();
6241
6242         if (start) {
6243                 ar->set_fade_in_length (new_length);
6244         } else {
6245                 ar->set_fade_out_length (new_length);
6246         }
6247
6248         /* Adjusting the xfade may affect other regions in the playlist, so we need
6249            to get undo Commands from the whole playlist rather than just the
6250            region.
6251         */
6252
6253         vector<Command*> cmds;
6254         ar->playlist()->rdiff (cmds);
6255         _editor->session()->add_commands (cmds);
6256         _editor->commit_reversible_command ();
6257
6258 }
6259
6260 void
6261 CrossfadeEdgeDrag::aborted (bool)
6262 {
6263         if (start) {
6264                 // arv->redraw_start_xfade ();
6265         } else {
6266                 // arv->redraw_end_xfade ();
6267         }
6268 }
6269
6270 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6271         : Drag (e, item, true)
6272         , line (new EditorCursor (*e))
6273 {
6274         line->set_position (pos);
6275         line->show ();
6276 }
6277
6278 RegionCutDrag::~RegionCutDrag ()
6279 {
6280         delete line;
6281 }
6282
6283 void
6284 RegionCutDrag::motion (GdkEvent*, bool)
6285 {
6286         framepos_t where = _drags->current_pointer_frame();
6287         _editor->snap_to (where);
6288
6289         line->set_position (where);
6290 }
6291
6292 void
6293 RegionCutDrag::finished (GdkEvent*, bool)
6294 {
6295         _editor->get_track_canvas()->canvas()->re_enter();
6296
6297         framepos_t pos = _drags->current_pointer_frame();
6298
6299         line->hide ();
6300
6301         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6302
6303         if (rs.empty()) {
6304                 return;
6305         }
6306
6307         _editor->split_regions_at (pos, rs);
6308 }
6309
6310 void
6311 RegionCutDrag::aborted (bool)
6312 {
6313 }