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 = _real_section->bbt();
3178
3179                         /* we can't add a meter where one currently exists */
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                                                                , map.frame_time (bbt), 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         if (_marker->meter().position_lock_style() == MusicTime) {
3198                 TempoMap& map (_editor->session()->tempo_map());
3199                 Timecode::BBT_Time bbt;
3200                 map.bbt_time (pf, bbt);
3201                 /* round bbt to bars */
3202                 map.round_bbt (bbt, -1, RoundNearest);
3203
3204                 if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3205                         /* adjust previous tempo to match meter frame */
3206                         _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3207                 } else if ((bbt.bars > _real_section->bbt().bars && pf > last_pointer_frame())
3208                            || (bbt.bars < _real_section->bbt().bars && pf < last_pointer_frame())) {
3209                         /* move meter beat-based */
3210                         _editor->session()->tempo_map().gui_move_meter (_real_section, bbt);
3211                 }
3212         } else {
3213                 /* AudioTime */
3214                 if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3215                         /* currently disabled in the lib for AudioTime */
3216                         if (_real_section->movable()) {
3217                                 _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3218                         }
3219                 } else {
3220                         _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3221                 }
3222         }
3223         _marker->set_position (pf);
3224         show_verbose_cursor_time (_real_section->frame());
3225 }
3226
3227 void
3228 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3229 {
3230         if (!movement_occurred) {
3231                 if (was_double_click()) {
3232                         _editor->edit_meter_marker (*_marker);
3233                 }
3234                 return;
3235         }
3236
3237         TempoMap& map (_editor->session()->tempo_map());
3238
3239         XMLNode &after = map.get_state();
3240         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3241         _editor->commit_reversible_command ();
3242
3243         // delete the dummy marker we used for visual representation while moving.
3244         // a new visual marker will show up automatically.
3245         delete _marker;
3246 }
3247
3248 void
3249 MeterMarkerDrag::aborted (bool moved)
3250 {
3251         _marker->set_position (_marker->meter().frame ());
3252         if (moved) {
3253                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3254                 // delete the dummy marker we used for visual representation while moving.
3255                 // a new visual marker will show up automatically.
3256                 delete _marker;
3257         }
3258 }
3259
3260 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3261         : Drag (e, i)
3262         , _copy (c)
3263         , before_state (0)
3264 {
3265         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3266
3267         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3268         _real_section = &_marker->tempo();
3269         _movable = _real_section->movable();
3270         assert (_marker);
3271 }
3272
3273 void
3274 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3275 {
3276         Drag::start_grab (event, cursor);
3277         if (!_real_section->active()) {
3278                 show_verbose_cursor_text (_("inactive"));
3279         } else {
3280                 show_verbose_cursor_time (adjusted_current_frame (event));
3281         }
3282 }
3283
3284 void
3285 TempoMarkerDrag::setup_pointer_frame_offset ()
3286 {
3287         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3288 }
3289
3290 void
3291 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3292 {
3293         if (!_real_section->active()) {
3294                 return;
3295         }
3296         if (first_move) {
3297
3298                 // mvc drag - create a dummy marker to catch events, hide it.
3299
3300                 char name[64];
3301                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3302
3303                 TempoSection section (_marker->tempo());
3304
3305                 _marker = new TempoMarker (
3306                         *_editor,
3307                         *_editor->tempo_group,
3308                         UIConfiguration::instance().color ("tempo marker"),
3309                         name,
3310                         *new TempoSection (_marker->tempo())
3311                         );
3312
3313                 /* use the new marker for the grab */
3314                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3315                 _marker->hide();
3316
3317                 TempoMap& map (_editor->session()->tempo_map());
3318                 /* get current state */
3319                 before_state = &map.get_state();
3320                 if (!_copy) {
3321                         _editor->begin_reversible_command (_("move tempo mark"));
3322                 } else {
3323                         _editor->begin_reversible_command (_("copy tempo mark"));
3324                         framepos_t frame;
3325                         bool use_snap = false;
3326
3327                         if (!_editor->snap_musical()) {
3328                                 frame = adjusted_current_frame (event);
3329                         } else {
3330                                 frame = adjusted_current_frame (event, false);
3331                                 if (ArdourKeyboard::indicates_snap (event->button.state)) {
3332                                         if (_editor->snap_mode() == Editing::SnapOff) {
3333                                                 use_snap = true;
3334                                         } else {
3335                                                 use_snap = false;
3336                                         }
3337                                 } else {
3338                                         if (_editor->snap_mode() == Editing::SnapOff) {
3339                                                 use_snap = false;
3340                                         } else {
3341                                                 use_snap = true;
3342                                         }
3343                                 }
3344                         }
3345
3346                         Timecode::BBT_Time bbt;
3347                         map.bbt_time (frame, bbt);
3348
3349                         /* add new tempo section to map, ensuring we don't refer to existing tempos for snap */
3350
3351                         if (_real_section->position_lock_style() == MusicTime) {
3352                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3353                                         map.round_bbt (bbt, -1, (frame > _real_section->frame()) ? RoundUpMaybe : RoundDownMaybe);
3354                                 } else if (use_snap) {
3355                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0), RoundNearest);
3356                                 }
3357                                 double const pulse = map.predict_tempo_pulse (_real_section, map.frame_time (bbt));
3358                                 _real_section = map.add_tempo (_marker->tempo(), pulse, _real_section->type());
3359                         } else {
3360                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3361                                         map.round_bbt (bbt, -1, (frame > _real_section->frame()) ? RoundUpMaybe : RoundDownMaybe);
3362                                 } else if (use_snap) {
3363                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0), RoundNearest);
3364                                 }
3365                                 if (use_snap) {
3366                                         frame = map.predict_tempo_frame (_real_section, bbt);
3367                                 }
3368                                 _real_section = map.add_tempo (_marker->tempo(), frame, _real_section->type());
3369                         }
3370                 }
3371
3372         }
3373
3374         framepos_t pf;
3375
3376         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3377                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3378                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3379                 stringstream strs;
3380                 strs << new_bpm;
3381                 show_verbose_cursor_text (strs.str());
3382         } else if (_movable && !_real_section->locked_to_meter()) {
3383                 if (!_editor->snap_musical()) {
3384                         /* snap normally (this is not self-referential).*/
3385                         pf = adjusted_current_frame (event);
3386                 } else {
3387                         /* but this is.
3388                            we can't use the map for anything related to tempo,
3389                            so we round bbt using meters, which have no dependency
3390                            on pulse for this kind of thing.
3391                         */
3392                         bool use_snap;
3393                         TempoMap& map (_editor->session()->tempo_map());
3394
3395                         pf = adjusted_current_frame (event, false);
3396                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
3397                                 if (_editor->snap_mode() == Editing::SnapOff) {
3398                                         use_snap = true;
3399                                 } else {
3400                                         use_snap = false;
3401                                 }
3402                         } else {
3403                                 if (_editor->snap_mode() == Editing::SnapOff) {
3404                                         use_snap = false;
3405                                 } else {
3406                                         use_snap = true;
3407                                 }
3408                         }
3409
3410                         Timecode::BBT_Time when;
3411                         map.bbt_time (pf, when);
3412
3413                         if (_real_section->position_lock_style() == MusicTime) {
3414
3415                                 const double pulse = map.predict_tempo_pulse (_real_section, pf);
3416                                 when = map.pulse_to_bbt (pulse);
3417                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3418                                         map.round_bbt (when, -1, (pf > _real_section->frame()) ? RoundUpMaybe : RoundDownMaybe);
3419                                 } else if (use_snap) {
3420                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0), RoundNearest);
3421                                 }
3422                                 const double beat = map.bbt_to_beats (when);
3423                                 map.gui_move_tempo_beat (_real_section, beat);
3424                         } else {
3425                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3426                                         map.round_bbt (when, -1, (pf > _real_section->frame()) ? RoundUpMaybe : RoundDownMaybe);
3427                                 } else if (use_snap) {
3428                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0), RoundNearest);
3429                                 }
3430                                 if (use_snap) {
3431                                         pf = map.predict_tempo_frame (_real_section, when);
3432                                 }
3433                                 map.gui_move_tempo_frame (_real_section, pf);
3434                         }
3435                 }
3436
3437                 show_verbose_cursor_time (_real_section->frame());
3438         }
3439         _marker->set_position (pf);
3440 }
3441
3442 void
3443 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3444 {
3445         if (!_real_section->active()) {
3446                 return;
3447         }
3448         if (!movement_occurred) {
3449                 if (was_double_click()) {
3450                         _editor->edit_tempo_marker (*_marker);
3451                 }
3452                 return;
3453         }
3454
3455         TempoMap& map (_editor->session()->tempo_map());
3456
3457         XMLNode &after = map.get_state();
3458         _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3459         _editor->commit_reversible_command ();
3460
3461         // delete the dummy marker we used for visual representation while moving.
3462         // a new visual marker will show up automatically.
3463         delete _marker;
3464 }
3465
3466 void
3467 TempoMarkerDrag::aborted (bool moved)
3468 {
3469         _marker->set_position (_marker->tempo().frame());
3470         if (moved) {
3471                 TempoMap& map (_editor->session()->tempo_map());
3472                 map.set_state (*before_state, Stateful::current_state_version);
3473                 // delete the dummy marker we used for visual representation while moving.
3474                 // a new visual marker will show up automatically.
3475                 delete _marker;
3476         }
3477 }
3478
3479 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3480         : Drag (e, &c.track_canvas_item(), false)
3481         , _cursor (c)
3482         , _stop (s)
3483         , _grab_zoom (0.0)
3484 {
3485         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3486 }
3487
3488 /** Do all the things we do when dragging the playhead to make it look as though
3489  *  we have located, without actually doing the locate (because that would cause
3490  *  the diskstream buffers to be refilled, which is too slow).
3491  */
3492 void
3493 CursorDrag::fake_locate (framepos_t t)
3494 {
3495         if (_editor->session () == 0) {
3496                 return;
3497         }
3498
3499         _editor->playhead_cursor->set_position (t);
3500
3501         Session* s = _editor->session ();
3502         if (s->timecode_transmission_suspended ()) {
3503                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3504                 /* This is asynchronous so it will be sent "now"
3505                  */
3506                 s->send_mmc_locate (f);
3507                 /* These are synchronous and will be sent during the next
3508                    process cycle
3509                 */
3510                 s->queue_full_time_code ();
3511                 s->queue_song_position_pointer ();
3512         }
3513
3514         show_verbose_cursor_time (t);
3515         _editor->UpdateAllTransportClocks (t);
3516 }
3517
3518 void
3519 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3520 {
3521         Drag::start_grab (event, c);
3522         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3523
3524         _grab_zoom = _editor->samples_per_pixel;
3525
3526         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3527
3528         _editor->snap_to_with_modifier (where, event);
3529
3530         _editor->_dragging_playhead = true;
3531
3532         Session* s = _editor->session ();
3533
3534         /* grab the track canvas item as well */
3535
3536         _cursor.track_canvas_item().grab();
3537
3538         if (s) {
3539                 if (_was_rolling && _stop) {
3540                         s->request_stop ();
3541                 }
3542
3543                 if (s->is_auditioning()) {
3544                         s->cancel_audition ();
3545                 }
3546
3547
3548                 if (AudioEngine::instance()->connected()) {
3549
3550                         /* do this only if we're the engine is connected
3551                          * because otherwise this request will never be
3552                          * serviced and we'll busy wait forever. likewise,
3553                          * notice if we are disconnected while waiting for the
3554                          * request to be serviced.
3555                          */
3556
3557                         s->request_suspend_timecode_transmission ();
3558                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3559                                 /* twiddle our thumbs */
3560                         }
3561                 }
3562         }
3563
3564         fake_locate (where - snap_delta (event->button.state));
3565 }
3566
3567 void
3568 CursorDrag::motion (GdkEvent* event, bool)
3569 {
3570         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3571         _editor->snap_to_with_modifier (where, event);
3572         if (where != last_pointer_frame()) {
3573                 fake_locate (where - snap_delta (event->button.state));
3574         }
3575 }
3576
3577 void
3578 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3579 {
3580         _editor->_dragging_playhead = false;
3581
3582         _cursor.track_canvas_item().ungrab();
3583
3584         if (!movement_occurred && _stop) {
3585                 return;
3586         }
3587
3588         motion (event, false);
3589
3590         Session* s = _editor->session ();
3591         if (s) {
3592                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3593                 _editor->_pending_locate_request = true;
3594                 s->request_resume_timecode_transmission ();
3595         }
3596 }
3597
3598 void
3599 CursorDrag::aborted (bool)
3600 {
3601         _cursor.track_canvas_item().ungrab();
3602
3603         if (_editor->_dragging_playhead) {
3604                 _editor->session()->request_resume_timecode_transmission ();
3605                 _editor->_dragging_playhead = false;
3606         }
3607
3608         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3609 }
3610
3611 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3612         : RegionDrag (e, i, p, v)
3613 {
3614         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3615 }
3616
3617 void
3618 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3619 {
3620         Drag::start_grab (event, cursor);
3621
3622         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3623         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3624         setup_snap_delta (r->position ());
3625
3626         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3627 }
3628
3629 void
3630 FadeInDrag::setup_pointer_frame_offset ()
3631 {
3632         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3633         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3634         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3635 }
3636
3637 void
3638 FadeInDrag::motion (GdkEvent* event, bool)
3639 {
3640         framecnt_t fade_length;
3641
3642         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3643         _editor->snap_to_with_modifier (pos, event);
3644         pos -= snap_delta (event->button.state);
3645
3646         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3647
3648         if (pos < (region->position() + 64)) {
3649                 fade_length = 64; // this should be a minimum defined somewhere
3650         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3651                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3652         } else {
3653                 fade_length = pos - region->position();
3654         }
3655
3656         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3657
3658                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3659
3660                 if (!tmp) {
3661                         continue;
3662                 }
3663
3664                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3665         }
3666
3667         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3668 }
3669
3670 void
3671 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3672 {
3673         if (!movement_occurred) {
3674                 return;
3675         }
3676
3677         framecnt_t fade_length;
3678         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3679         _editor->snap_to_with_modifier (pos, event);
3680         pos -= snap_delta (event->button.state);
3681
3682         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3683
3684         if (pos < (region->position() + 64)) {
3685                 fade_length = 64; // this should be a minimum defined somewhere
3686         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3687                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3688         } else {
3689                 fade_length = pos - region->position();
3690         }
3691
3692         bool in_command = false;
3693
3694         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3695
3696                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3697
3698                 if (!tmp) {
3699                         continue;
3700                 }
3701
3702                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3703                 XMLNode &before = alist->get_state();
3704
3705                 tmp->audio_region()->set_fade_in_length (fade_length);
3706                 tmp->audio_region()->set_fade_in_active (true);
3707
3708                 if (!in_command) {
3709                         _editor->begin_reversible_command (_("change fade in length"));
3710                         in_command = true;
3711                 }
3712                 XMLNode &after = alist->get_state();
3713                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3714         }
3715
3716         if (in_command) {
3717                 _editor->commit_reversible_command ();
3718         }
3719 }
3720
3721 void
3722 FadeInDrag::aborted (bool)
3723 {
3724         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3725                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3726
3727                 if (!tmp) {
3728                         continue;
3729                 }
3730
3731                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3732         }
3733 }
3734
3735 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3736         : RegionDrag (e, i, p, v)
3737 {
3738         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3739 }
3740
3741 void
3742 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3743 {
3744         Drag::start_grab (event, cursor);
3745
3746         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3747         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3748         setup_snap_delta (r->last_frame ());
3749
3750         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3751 }
3752
3753 void
3754 FadeOutDrag::setup_pointer_frame_offset ()
3755 {
3756         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3757         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3758         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3759 }
3760
3761 void
3762 FadeOutDrag::motion (GdkEvent* event, bool)
3763 {
3764         framecnt_t fade_length;
3765
3766         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3767         _editor->snap_to_with_modifier (pos, event);
3768         pos -= snap_delta (event->button.state);
3769
3770         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3771
3772         if (pos > (region->last_frame() - 64)) {
3773                 fade_length = 64; // this should really be a minimum fade defined somewhere
3774         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3775                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3776         } else {
3777                 fade_length = region->last_frame() - pos;
3778         }
3779
3780         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3781
3782                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3783
3784                 if (!tmp) {
3785                         continue;
3786                 }
3787
3788                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3789         }
3790
3791         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3792 }
3793
3794 void
3795 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3796 {
3797         if (!movement_occurred) {
3798                 return;
3799         }
3800
3801         framecnt_t fade_length;
3802
3803         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3804         _editor->snap_to_with_modifier (pos, event);
3805         pos -= snap_delta (event->button.state);
3806
3807         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3808
3809         if (pos > (region->last_frame() - 64)) {
3810                 fade_length = 64; // this should really be a minimum fade defined somewhere
3811         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3812                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3813         } else {
3814                 fade_length = region->last_frame() - pos;
3815         }
3816
3817         bool in_command = false;
3818
3819         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3820
3821                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3822
3823                 if (!tmp) {
3824                         continue;
3825                 }
3826
3827                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3828                 XMLNode &before = alist->get_state();
3829
3830                 tmp->audio_region()->set_fade_out_length (fade_length);
3831                 tmp->audio_region()->set_fade_out_active (true);
3832
3833                 if (!in_command) {
3834                         _editor->begin_reversible_command (_("change fade out length"));
3835                         in_command = true;
3836                 }
3837                 XMLNode &after = alist->get_state();
3838                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3839         }
3840
3841         if (in_command) {
3842                 _editor->commit_reversible_command ();
3843         }
3844 }
3845
3846 void
3847 FadeOutDrag::aborted (bool)
3848 {
3849         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3850                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3851
3852                 if (!tmp) {
3853                         continue;
3854                 }
3855
3856                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3857         }
3858 }
3859
3860 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3861         : Drag (e, i)
3862         , _selection_changed (false)
3863 {
3864         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3865         Gtk::Window* toplevel = _editor->current_toplevel();
3866         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3867
3868         assert (_marker);
3869
3870         _points.push_back (ArdourCanvas::Duple (0, 0));
3871
3872         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3873 }
3874
3875 MarkerDrag::~MarkerDrag ()
3876 {
3877         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3878                 delete i->location;
3879         }
3880 }
3881
3882 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3883 {
3884         location = new Location (*l);
3885         markers.push_back (m);
3886         move_both = false;
3887 }
3888
3889 void
3890 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3891 {
3892         Drag::start_grab (event, cursor);
3893
3894         bool is_start;
3895
3896         Location *location = _editor->find_location_from_marker (_marker, is_start);
3897         _editor->_dragging_edit_point = true;
3898
3899         update_item (location);
3900
3901         // _drag_line->show();
3902         // _line->raise_to_top();
3903
3904         if (is_start) {
3905                 show_verbose_cursor_time (location->start());
3906         } else {
3907                 show_verbose_cursor_time (location->end());
3908         }
3909         setup_snap_delta (is_start ? location->start() : location->end());
3910
3911         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3912
3913         switch (op) {
3914         case Selection::Toggle:
3915                 /* we toggle on the button release */
3916                 break;
3917         case Selection::Set:
3918                 if (!_editor->selection->selected (_marker)) {
3919                         _editor->selection->set (_marker);
3920                         _selection_changed = true;
3921                 }
3922                 break;
3923         case Selection::Extend:
3924         {
3925                 Locations::LocationList ll;
3926                 list<ArdourMarker*> to_add;
3927                 framepos_t s, e;
3928                 _editor->selection->markers.range (s, e);
3929                 s = min (_marker->position(), s);
3930                 e = max (_marker->position(), e);
3931                 s = min (s, e);
3932                 e = max (s, e);
3933                 if (e < max_framepos) {
3934                         ++e;
3935                 }
3936                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3937                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3938                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3939                         if (lm) {
3940                                 if (lm->start) {
3941                                         to_add.push_back (lm->start);
3942                                 }
3943                                 if (lm->end) {
3944                                         to_add.push_back (lm->end);
3945                                 }
3946                         }
3947                 }
3948                 if (!to_add.empty()) {
3949                         _editor->selection->add (to_add);
3950                         _selection_changed = true;
3951                 }
3952                 break;
3953         }
3954         case Selection::Add:
3955                 _editor->selection->add (_marker);
3956                 _selection_changed = true;
3957
3958                 break;
3959         }
3960
3961         /* Set up copies for us to manipulate during the drag
3962          */
3963
3964         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3965
3966                 Location* l = _editor->find_location_from_marker (*i, is_start);
3967
3968                 if (!l) {
3969                         continue;
3970                 }
3971
3972                 if (l->is_mark()) {
3973                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3974                 } else {
3975                         /* range: check that the other end of the range isn't
3976                            already there.
3977                         */
3978                         CopiedLocationInfo::iterator x;
3979                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3980                                 if (*(*x).location == *l) {
3981                                         break;
3982                                 }
3983                         }
3984                         if (x == _copied_locations.end()) {
3985                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3986                         } else {
3987                                 (*x).markers.push_back (*i);
3988                                 (*x).move_both = true;
3989                         }
3990                 }
3991
3992         }
3993 }
3994
3995 void
3996 MarkerDrag::setup_pointer_frame_offset ()
3997 {
3998         bool is_start;
3999         Location *location = _editor->find_location_from_marker (_marker, is_start);
4000         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
4001 }
4002
4003 void
4004 MarkerDrag::motion (GdkEvent* event, bool)
4005 {
4006         framecnt_t f_delta = 0;
4007         bool is_start;
4008         bool move_both = false;
4009         Location *real_location;
4010         Location *copy_location = 0;
4011         framecnt_t const sd = snap_delta (event->button.state);
4012
4013         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
4014         framepos_t next = newframe;
4015
4016         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
4017                 move_both = true;
4018         }
4019
4020         CopiedLocationInfo::iterator x;
4021
4022         /* find the marker we're dragging, and compute the delta */
4023
4024         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4025
4026                 copy_location = (*x).location;
4027
4028                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4029
4030                         /* this marker is represented by this
4031                          * CopiedLocationMarkerInfo
4032                          */
4033
4034                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4035                                 /* que pasa ?? */
4036                                 return;
4037                         }
4038
4039                         if (real_location->is_mark()) {
4040                                 f_delta = newframe - copy_location->start();
4041                         } else {
4042
4043
4044                                 switch (_marker->type()) {
4045                                 case ArdourMarker::SessionStart:
4046                                 case ArdourMarker::RangeStart:
4047                                 case ArdourMarker::LoopStart:
4048                                 case ArdourMarker::PunchIn:
4049                                         f_delta = newframe - copy_location->start();
4050                                         break;
4051
4052                                 case ArdourMarker::SessionEnd:
4053                                 case ArdourMarker::RangeEnd:
4054                                 case ArdourMarker::LoopEnd:
4055                                 case ArdourMarker::PunchOut:
4056                                         f_delta = newframe - copy_location->end();
4057                                         break;
4058                                 default:
4059                                         /* what kind of marker is this ? */
4060                                         return;
4061                                 }
4062                         }
4063
4064                         break;
4065                 }
4066         }
4067
4068         if (x == _copied_locations.end()) {
4069                 /* hmm, impossible - we didn't find the dragged marker */
4070                 return;
4071         }
4072
4073         /* now move them all */
4074
4075         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4076
4077                 copy_location = x->location;
4078
4079                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4080                         continue;
4081                 }
4082
4083                 if (real_location->locked()) {
4084                         continue;
4085                 }
4086
4087                 if (copy_location->is_mark()) {
4088
4089                         /* now move it */
4090
4091                         copy_location->set_start (copy_location->start() + f_delta);
4092
4093                 } else {
4094
4095                         framepos_t new_start = copy_location->start() + f_delta;
4096                         framepos_t new_end = copy_location->end() + f_delta;
4097
4098                         if (is_start) { // start-of-range marker
4099
4100                                 if (move_both || (*x).move_both) {
4101                                         copy_location->set_start (new_start);
4102                                         copy_location->set_end (new_end);
4103                                 } else  if (new_start < copy_location->end()) {
4104                                         copy_location->set_start (new_start);
4105                                 } else if (newframe > 0) {
4106                                         //_editor->snap_to (next, RoundUpAlways, true);
4107                                         copy_location->set_end (next);
4108                                         copy_location->set_start (newframe);
4109                                 }
4110
4111                         } else { // end marker
4112
4113                                 if (move_both || (*x).move_both) {
4114                                         copy_location->set_end (new_end);
4115                                         copy_location->set_start (new_start);
4116                                 } else if (new_end > copy_location->start()) {
4117                                         copy_location->set_end (new_end);
4118                                 } else if (newframe > 0) {
4119                                         //_editor->snap_to (next, RoundDownAlways, true);
4120                                         copy_location->set_start (next);
4121                                         copy_location->set_end (newframe);
4122                                 }
4123                         }
4124                 }
4125
4126                 update_item (copy_location);
4127
4128                 /* now lookup the actual GUI items used to display this
4129                  * location and move them to wherever the copy of the location
4130                  * is now. This means that the logic in ARDOUR::Location is
4131                  * still enforced, even though we are not (yet) modifying
4132                  * the real Location itself.
4133                  */
4134
4135                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4136
4137                 if (lm) {
4138                         lm->set_position (copy_location->start(), copy_location->end());
4139                 }
4140
4141         }
4142
4143         assert (!_copied_locations.empty());
4144
4145         show_verbose_cursor_time (newframe);
4146 }
4147
4148 void
4149 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4150 {
4151         if (!movement_occurred) {
4152
4153                 if (was_double_click()) {
4154                         _editor->rename_marker (_marker);
4155                         return;
4156                 }
4157
4158                 /* just a click, do nothing but finish
4159                    off the selection process
4160                 */
4161
4162                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4163                 switch (op) {
4164                 case Selection::Set:
4165                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4166                                 _editor->selection->set (_marker);
4167                                 _selection_changed = true;
4168                         }
4169                         break;
4170
4171                 case Selection::Toggle:
4172                         /* we toggle on the button release, click only */
4173                         _editor->selection->toggle (_marker);
4174                         _selection_changed = true;
4175
4176                         break;
4177
4178                 case Selection::Extend:
4179                 case Selection::Add:
4180                         break;
4181                 }
4182
4183                 if (_selection_changed) {
4184                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4185                         _editor->commit_reversible_selection_op();
4186                 }
4187
4188                 return;
4189         }
4190
4191         _editor->_dragging_edit_point = false;
4192
4193         XMLNode &before = _editor->session()->locations()->get_state();
4194         bool in_command = false;
4195
4196         MarkerSelection::iterator i;
4197         CopiedLocationInfo::iterator x;
4198         bool is_start;
4199
4200         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4201              x != _copied_locations.end() && i != _editor->selection->markers.end();
4202              ++i, ++x) {
4203
4204                 Location * location = _editor->find_location_from_marker (*i, is_start);
4205
4206                 if (location) {
4207
4208                         if (location->locked()) {
4209                                 continue;
4210                         }
4211                         if (!in_command) {
4212                                 _editor->begin_reversible_command ( _("move marker") );
4213                                 in_command = true;
4214                         }
4215                         if (location->is_mark()) {
4216                                 location->set_start (((*x).location)->start());
4217                         } else {
4218                                 location->set (((*x).location)->start(), ((*x).location)->end());
4219                         }
4220                 }
4221         }
4222
4223         if (in_command) {
4224                 XMLNode &after = _editor->session()->locations()->get_state();
4225                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4226                 _editor->commit_reversible_command ();
4227         }
4228 }
4229
4230 void
4231 MarkerDrag::aborted (bool movement_occurred)
4232 {
4233         if (!movement_occurred) {
4234                 return;
4235         }
4236
4237         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4238
4239                 /* move all markers to their original location */
4240
4241
4242                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4243
4244                         bool is_start;
4245                         Location * location = _editor->find_location_from_marker (*m, is_start);
4246
4247                         if (location) {
4248                                 (*m)->set_position (is_start ? location->start() : location->end());
4249                         }
4250                 }
4251         }
4252 }
4253
4254 void
4255 MarkerDrag::update_item (Location*)
4256 {
4257         /* noop */
4258 }
4259
4260 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4261         : Drag (e, i)
4262         , _fixed_grab_x (0.0)
4263         , _fixed_grab_y (0.0)
4264         , _cumulative_x_drag (0.0)
4265         , _cumulative_y_drag (0.0)
4266         , _pushing (false)
4267         , _final_index (0)
4268 {
4269         if (_zero_gain_fraction < 0.0) {
4270                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4271         }
4272
4273         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4274
4275         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4276         assert (_point);
4277 }
4278
4279
4280 void
4281 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4282 {
4283         Drag::start_grab (event, _editor->cursors()->fader);
4284
4285         // start the grab at the center of the control point so
4286         // the point doesn't 'jump' to the mouse after the first drag
4287         _fixed_grab_x = _point->get_x();
4288         _fixed_grab_y = _point->get_y();
4289
4290         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4291         setup_snap_delta (pos);
4292
4293         float const fraction = 1 - (_point->get_y() / _point->line().height());
4294         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4295
4296         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4297
4298         if (!_point->can_slide ()) {
4299                 _x_constrained = true;
4300         }
4301 }
4302
4303 void
4304 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4305 {
4306         double dx = _drags->current_pointer_x() - last_pointer_x();
4307         double dy = current_pointer_y() - last_pointer_y();
4308         bool need_snap = true;
4309
4310         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4311                 dx *= 0.1;
4312                 dy *= 0.1;
4313                 need_snap = false;
4314         }
4315
4316         /* coordinate in pixels relative to the start of the region (for region-based automation)
4317            or track (for track-based automation) */
4318         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4319         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4320
4321         // calculate zero crossing point. back off by .01 to stay on the
4322         // positive side of zero
4323         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4324
4325         if (_x_constrained) {
4326                 cx = _fixed_grab_x;
4327         }
4328         if (_y_constrained) {
4329                 cy = _fixed_grab_y;
4330         }
4331
4332         _cumulative_x_drag = cx - _fixed_grab_x;
4333         _cumulative_y_drag = cy - _fixed_grab_y;
4334
4335         cx = max (0.0, cx);
4336         cy = max (0.0, cy);
4337         cy = min ((double) _point->line().height(), cy);
4338
4339         // make sure we hit zero when passing through
4340         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4341                 cy = zero_gain_y;
4342         }
4343
4344         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4345
4346         if (!_x_constrained && need_snap) {
4347                 _editor->snap_to_with_modifier (cx_frames, event);
4348         }
4349
4350         cx_frames -= snap_delta (event->button.state);
4351         cx_frames = min (cx_frames, _point->line().maximum_time());
4352
4353         float const fraction = 1.0 - (cy / _point->line().height());
4354
4355         if (first_motion) {
4356                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4357                 _editor->begin_reversible_command (_("automation event move"));
4358                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4359         }
4360         pair<double, float> result;
4361         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4362
4363         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4364 }
4365
4366 void
4367 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4368 {
4369         if (!movement_occurred) {
4370
4371                 /* just a click */
4372                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4373                         _editor->reset_point_selection ();
4374                 }
4375
4376         } else {
4377                 _point->line().end_drag (_pushing, _final_index);
4378                 _editor->commit_reversible_command ();
4379         }
4380 }
4381
4382 void
4383 ControlPointDrag::aborted (bool)
4384 {
4385         _point->line().reset ();
4386 }
4387
4388 bool
4389 ControlPointDrag::active (Editing::MouseMode m)
4390 {
4391         if (m == Editing::MouseDraw) {
4392                 /* always active in mouse draw */
4393                 return true;
4394         }
4395
4396         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4397         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4398 }
4399
4400 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4401         : Drag (e, i)
4402         , _line (0)
4403         , _fixed_grab_x (0.0)
4404         , _fixed_grab_y (0.0)
4405         , _cumulative_y_drag (0)
4406         , _before (0)
4407         , _after (0)
4408 {
4409         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4410 }
4411
4412 void
4413 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4414 {
4415         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4416         assert (_line);
4417
4418         _item = &_line->grab_item ();
4419
4420         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4421            origin, and ditto for y.
4422         */
4423
4424         double mx = event->button.x;
4425         double my = event->button.y;
4426
4427         _line->grab_item().canvas_to_item (mx, my);
4428
4429         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4430
4431         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4432                 /* no adjacent points */
4433                 return;
4434         }
4435
4436         Drag::start_grab (event, _editor->cursors()->fader);
4437
4438         /* store grab start in item frame */
4439         double const bx = _line->nth (_before)->get_x();
4440         double const ax = _line->nth (_after)->get_x();
4441         double const click_ratio = (ax - mx) / (ax - bx);
4442
4443         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4444
4445         _fixed_grab_x = mx;
4446         _fixed_grab_y = cy;
4447
4448         double fraction = 1.0 - (cy / _line->height());
4449
4450         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4451 }
4452
4453 void
4454 LineDrag::motion (GdkEvent* event, bool first_move)
4455 {
4456         double dy = current_pointer_y() - last_pointer_y();
4457
4458         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4459                 dy *= 0.1;
4460         }
4461
4462         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4463
4464         _cumulative_y_drag = cy - _fixed_grab_y;
4465
4466         cy = max (0.0, cy);
4467         cy = min ((double) _line->height(), cy);
4468
4469         double const fraction = 1.0 - (cy / _line->height());
4470         uint32_t ignored;
4471
4472         if (first_move) {
4473                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4474
4475                 _editor->begin_reversible_command (_("automation range move"));
4476                 _line->start_drag_line (_before, _after, initial_fraction);
4477         }
4478
4479         /* we are ignoring x position for this drag, so we can just pass in anything */
4480         pair<double, float> result;
4481
4482         result = _line->drag_motion (0, fraction, true, false, ignored);
4483         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4484 }
4485
4486 void
4487 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4488 {
4489         if (movement_occurred) {
4490                 motion (event, false);
4491                 _line->end_drag (false, 0);
4492                 _editor->commit_reversible_command ();
4493         } else {
4494                 /* add a new control point on the line */
4495
4496                 AutomationTimeAxisView* atv;
4497
4498                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4499                         framepos_t where = grab_frame ();
4500
4501                         double cx = 0;
4502                         double cy = _fixed_grab_y;
4503
4504                         _line->grab_item().item_to_canvas (cx, cy);
4505
4506                         atv->add_automation_event (event, where, cy, false);
4507                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4508                         AudioRegionView* arv;
4509
4510                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4511                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4512                         }
4513                 }
4514         }
4515 }
4516
4517 void
4518 LineDrag::aborted (bool)
4519 {
4520         _line->reset ();
4521 }
4522
4523 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4524         : Drag (e, i),
4525           _line (0),
4526           _arv (0),
4527           _region_view_grab_x (0.0),
4528           _cumulative_x_drag (0),
4529           _before (0.0),
4530           _max_x (0)
4531 {
4532         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4533 }
4534
4535 void
4536 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4537 {
4538         Drag::start_grab (event);
4539
4540         _line = reinterpret_cast<Line*> (_item);
4541         assert (_line);
4542
4543         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4544
4545         double cx = event->button.x;
4546         double cy = event->button.y;
4547
4548         _item->parent()->canvas_to_item (cx, cy);
4549
4550         /* store grab start in parent frame */
4551         _region_view_grab_x = cx;
4552
4553         _before = *(float*) _item->get_data ("position");
4554
4555         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4556
4557         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4558 }
4559
4560 void
4561 FeatureLineDrag::motion (GdkEvent*, bool)
4562 {
4563         double dx = _drags->current_pointer_x() - last_pointer_x();
4564
4565         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4566
4567         _cumulative_x_drag += dx;
4568
4569         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4570
4571         if (cx > _max_x){
4572                 cx = _max_x;
4573         }
4574         else if(cx < 0){
4575                 cx = 0;
4576         }
4577
4578         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4579         assert (bbox);
4580         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4581
4582         float *pos = new float;
4583         *pos = cx;
4584
4585         _line->set_data ("position", pos);
4586
4587         _before = cx;
4588 }
4589
4590 void
4591 FeatureLineDrag::finished (GdkEvent*, bool)
4592 {
4593         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4594         _arv->update_transient(_before, _before);
4595 }
4596
4597 void
4598 FeatureLineDrag::aborted (bool)
4599 {
4600         //_line->reset ();
4601 }
4602
4603 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4604         : Drag (e, i)
4605         , _vertical_only (false)
4606 {
4607         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4608 }
4609
4610 void
4611 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4612 {
4613         Drag::start_grab (event);
4614         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4615 }
4616
4617 void
4618 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4619 {
4620         framepos_t start;
4621         framepos_t end;
4622         double y1;
4623         double y2;
4624
4625         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4626
4627         framepos_t grab = grab_frame ();
4628         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4629                 _editor->snap_to_with_modifier (grab, event);
4630         } else {
4631                 grab = raw_grab_frame ();
4632         }
4633
4634         /* base start and end on initial click position */
4635
4636         if (pf < grab) {
4637                 start = pf;
4638                 end = grab;
4639         } else {
4640                 end = pf;
4641                 start = grab;
4642         }
4643
4644         if (current_pointer_y() < grab_y()) {
4645                 y1 = current_pointer_y();
4646                 y2 = grab_y();
4647         } else {
4648                 y2 = current_pointer_y();
4649                 y1 = grab_y();
4650         }
4651
4652         if (start != end || y1 != y2) {
4653
4654                 double x1 = _editor->sample_to_pixel (start);
4655                 double x2 = _editor->sample_to_pixel (end);
4656                 const double min_dimension = 2.0;
4657
4658                 if (_vertical_only) {
4659                         /* fixed 10 pixel width */
4660                         x2 = x1 + 10;
4661                 } else {
4662                         if (x2 < x1) {
4663                                 x2 = min (x1 - min_dimension, x2);
4664                         } else {
4665                                 x2 = max (x1 + min_dimension, x2);
4666                         }
4667                 }
4668
4669                 if (y2 < y1) {
4670                         y2 = min (y1 - min_dimension, y2);
4671                 } else {
4672                         y2 = max (y1 + min_dimension, y2);
4673                 }
4674
4675                 /* translate rect into item space and set */
4676
4677                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4678
4679                 /* this drag is a _trackview_only == true drag, so the y1 and
4680                  * y2 (computed using current_pointer_y() and grab_y()) will be
4681                  * relative to the top of the trackview group). The
4682                  * rubberband rect has the same parent/scroll offset as the
4683                  * the trackview group, so we can use the "r" rect directly
4684                  * to set the shape of the rubberband.
4685                  */
4686
4687                 _editor->rubberband_rect->set (r);
4688                 _editor->rubberband_rect->show();
4689                 _editor->rubberband_rect->raise_to_top();
4690
4691                 show_verbose_cursor_time (pf);
4692
4693                 do_select_things (event, true);
4694         }
4695 }
4696
4697 void
4698 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4699 {
4700         framepos_t x1;
4701         framepos_t x2;
4702         framepos_t grab = grab_frame ();
4703         framepos_t lpf = last_pointer_frame ();
4704
4705         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4706                 grab = raw_grab_frame ();
4707                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4708         }
4709
4710         if (grab < lpf) {
4711                 x1 = grab;
4712                 x2 = lpf;
4713         } else {
4714                 x2 = grab;
4715                 x1 = lpf;
4716         }
4717
4718         double y1;
4719         double y2;
4720
4721         if (current_pointer_y() < grab_y()) {
4722                 y1 = current_pointer_y();
4723                 y2 = grab_y();
4724         } else {
4725                 y2 = current_pointer_y();
4726                 y1 = grab_y();
4727         }
4728
4729         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4730 }
4731
4732 void
4733 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4734 {
4735         if (movement_occurred) {
4736
4737                 motion (event, false);
4738                 do_select_things (event, false);
4739
4740         } else {
4741
4742                 /* just a click */
4743
4744                 bool do_deselect = true;
4745                 MidiTimeAxisView* mtv;
4746
4747                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4748                         /* MIDI track */
4749                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4750                                 /* nothing selected */
4751                                 add_midi_region (mtv, true);
4752                                 do_deselect = false;
4753                         }
4754                 }
4755
4756                 /* do not deselect if Primary or Tertiary (toggle-select or
4757                  * extend-select are pressed.
4758                  */
4759
4760                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4761                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4762                     do_deselect) {
4763                         deselect_things ();
4764                 }
4765
4766         }
4767
4768         _editor->rubberband_rect->hide();
4769 }
4770
4771 void
4772 RubberbandSelectDrag::aborted (bool)
4773 {
4774         _editor->rubberband_rect->hide ();
4775 }
4776
4777 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4778         : RegionDrag (e, i, p, v)
4779 {
4780         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4781 }
4782
4783 void
4784 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4785 {
4786         Drag::start_grab (event, cursor);
4787
4788         _editor->get_selection().add (_primary);
4789
4790         framepos_t where = _primary->region()->position();
4791         setup_snap_delta (where);
4792
4793         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4794 }
4795
4796 void
4797 TimeFXDrag::motion (GdkEvent* event, bool)
4798 {
4799         RegionView* rv = _primary;
4800         StreamView* cv = rv->get_time_axis_view().view ();
4801
4802         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4803         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4804         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4805         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4806         _editor->snap_to_with_modifier (pf, event);
4807         pf -= snap_delta (event->button.state);
4808
4809         if (pf > rv->region()->position()) {
4810                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4811         }
4812
4813         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4814 }
4815
4816 void
4817 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4818 {
4819         /* this may have been a single click, no drag. We still want the dialog
4820            to show up in that case, so that the user can manually edit the
4821            parameters for the timestretch.
4822         */
4823
4824         float fraction = 1.0;
4825
4826         if (movement_occurred) {
4827
4828                 motion (event, false);
4829
4830                 _primary->get_time_axis_view().hide_timestretch ();
4831
4832                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4833
4834                 if (adjusted_frame_pos < _primary->region()->position()) {
4835                         /* backwards drag of the left edge - not usable */
4836                         return;
4837                 }
4838
4839                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4840
4841                 fraction = (double) newlen / (double) _primary->region()->length();
4842
4843 #ifndef USE_RUBBERBAND
4844                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4845                 if (_primary->region()->data_type() == DataType::AUDIO) {
4846                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4847                 }
4848 #endif
4849         }
4850
4851         if (!_editor->get_selection().regions.empty()) {
4852                 /* primary will already be included in the selection, and edit
4853                    group shared editing will propagate selection across
4854                    equivalent regions, so just use the current region
4855                    selection.
4856                 */
4857
4858                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4859                         error << _("An error occurred while executing time stretch operation") << endmsg;
4860                 }
4861         }
4862 }
4863
4864 void
4865 TimeFXDrag::aborted (bool)
4866 {
4867         _primary->get_time_axis_view().hide_timestretch ();
4868 }
4869
4870 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4871         : Drag (e, i)
4872 {
4873         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4874 }
4875
4876 void
4877 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4878 {
4879         Drag::start_grab (event);
4880 }
4881
4882 void
4883 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4884 {
4885         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4886 }
4887
4888 void
4889 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4890 {
4891         if (movement_occurred && _editor->session()) {
4892                 /* make sure we stop */
4893                 _editor->session()->request_transport_speed (0.0);
4894         }
4895 }
4896
4897 void
4898 ScrubDrag::aborted (bool)
4899 {
4900         /* XXX: TODO */
4901 }
4902
4903 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4904         : Drag (e, i)
4905         , _operation (o)
4906         , _add (false)
4907         , _time_selection_at_start (!_editor->get_selection().time.empty())
4908 {
4909         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4910
4911         if (_time_selection_at_start) {
4912                 start_at_start = _editor->get_selection().time.start();
4913                 end_at_start = _editor->get_selection().time.end_frame();
4914         }
4915 }
4916
4917 void
4918 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4919 {
4920         if (_editor->session() == 0) {
4921                 return;
4922         }
4923
4924         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4925
4926         switch (_operation) {
4927         case CreateSelection:
4928                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4929                         _add = true;
4930                 } else {
4931                         _add = false;
4932                 }
4933                 cursor = _editor->cursors()->selector;
4934                 Drag::start_grab (event, cursor);
4935                 break;
4936
4937         case SelectionStartTrim:
4938                 if (_editor->clicked_axisview) {
4939                         _editor->clicked_axisview->order_selection_trims (_item, true);
4940                 }
4941                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4942                 break;
4943
4944         case SelectionEndTrim:
4945                 if (_editor->clicked_axisview) {
4946                         _editor->clicked_axisview->order_selection_trims (_item, false);
4947                 }
4948                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4949                 break;
4950
4951         case SelectionMove:
4952                 Drag::start_grab (event, cursor);
4953                 break;
4954
4955         case SelectionExtend:
4956                 Drag::start_grab (event, cursor);
4957                 break;
4958         }
4959
4960         if (_operation == SelectionMove) {
4961                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4962         } else {
4963                 show_verbose_cursor_time (adjusted_current_frame (event));
4964         }
4965 }
4966
4967 void
4968 SelectionDrag::setup_pointer_frame_offset ()
4969 {
4970         switch (_operation) {
4971         case CreateSelection:
4972                 _pointer_frame_offset = 0;
4973                 break;
4974
4975         case SelectionStartTrim:
4976         case SelectionMove:
4977                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4978                 break;
4979
4980         case SelectionEndTrim:
4981                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4982                 break;
4983
4984         case SelectionExtend:
4985                 break;
4986         }
4987 }
4988
4989 void
4990 SelectionDrag::motion (GdkEvent* event, bool first_move)
4991 {
4992         framepos_t start = 0;
4993         framepos_t end = 0;
4994         framecnt_t length = 0;
4995         framecnt_t distance = 0;
4996
4997         framepos_t const pending_position = adjusted_current_frame (event);
4998
4999         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
5000                 return;
5001         }
5002
5003         switch (_operation) {
5004         case CreateSelection:
5005         {
5006                 framepos_t grab = grab_frame ();
5007
5008                 if (first_move) {
5009                         grab = adjusted_current_frame (event, false);
5010                         if (grab < pending_position) {
5011                                 _editor->snap_to (grab, RoundDownMaybe);
5012                         }  else {
5013                                 _editor->snap_to (grab, RoundUpMaybe);
5014                         }
5015                 }
5016
5017                 if (pending_position < grab) {
5018                         start = pending_position;
5019                         end = grab;
5020                 } else {
5021                         end = pending_position;
5022                         start = grab;
5023                 }
5024
5025                 /* first drag: Either add to the selection
5026                    or create a new selection
5027                 */
5028
5029                 if (first_move) {
5030
5031                         if (_add) {
5032
5033                                 /* adding to the selection */
5034                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5035                                 _editor->clicked_selection = _editor->selection->add (start, end);
5036                                 _add = false;
5037
5038                         } else {
5039
5040                                 /* new selection */
5041
5042                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5043                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5044                                 }
5045
5046                                 _editor->clicked_selection = _editor->selection->set (start, end);
5047                         }
5048                 }
5049
5050                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5051                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5052                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5053                 if (atest) {
5054                         _editor->selection->add (atest);
5055                         break;
5056                 }
5057
5058                 /* select all tracks within the rectangle that we've marked out so far */
5059                 TrackViewList new_selection;
5060                 TrackViewList& all_tracks (_editor->track_views);
5061
5062                 ArdourCanvas::Coord const top = grab_y();
5063                 ArdourCanvas::Coord const bottom = current_pointer_y();
5064
5065                 if (top >= 0 && bottom >= 0) {
5066
5067                         //first, find the tracks that are covered in the y range selection
5068                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5069                                 if ((*i)->covered_by_y_range (top, bottom)) {
5070                                         new_selection.push_back (*i);
5071                                 }
5072                         }
5073
5074                         //now find any tracks that are GROUPED with the tracks we selected
5075                         TrackViewList grouped_add = new_selection;
5076                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5077                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5078                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5079                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5080                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5081                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5082                                                         grouped_add.push_back (*j);
5083                                         }
5084                                 }
5085                         }
5086
5087                         //now compare our list with the current selection, and add or remove as necessary
5088                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5089                         TrackViewList tracks_to_add;
5090                         TrackViewList tracks_to_remove;
5091                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5092                                 if ( !_editor->selection->tracks.contains ( *i ) )
5093                                         tracks_to_add.push_back ( *i );
5094                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5095                                 if ( !grouped_add.contains ( *i ) )
5096                                         tracks_to_remove.push_back ( *i );
5097                         _editor->selection->add(tracks_to_add);
5098                         _editor->selection->remove(tracks_to_remove);
5099
5100                 }
5101         }
5102         break;
5103
5104         case SelectionStartTrim:
5105
5106                 end = _editor->selection->time[_editor->clicked_selection].end;
5107
5108                 if (pending_position > end) {
5109                         start = end;
5110                 } else {
5111                         start = pending_position;
5112                 }
5113                 break;
5114
5115         case SelectionEndTrim:
5116
5117                 start = _editor->selection->time[_editor->clicked_selection].start;
5118
5119                 if (pending_position < start) {
5120                         end = start;
5121                 } else {
5122                         end = pending_position;
5123                 }
5124
5125                 break;
5126
5127         case SelectionMove:
5128
5129                 start = _editor->selection->time[_editor->clicked_selection].start;
5130                 end = _editor->selection->time[_editor->clicked_selection].end;
5131
5132                 length = end - start;
5133                 distance = pending_position - start;
5134                 start = pending_position;
5135                 _editor->snap_to (start);
5136
5137                 end = start + length;
5138
5139                 break;
5140
5141         case SelectionExtend:
5142                 break;
5143         }
5144
5145         if (start != end) {
5146                 switch (_operation) {
5147                 case SelectionMove:
5148                         if (_time_selection_at_start) {
5149                                 _editor->selection->move_time (distance);
5150                         }
5151                         break;
5152                 default:
5153                         _editor->selection->replace (_editor->clicked_selection, start, end);
5154                 }
5155         }
5156
5157         if (_operation == SelectionMove) {
5158                 show_verbose_cursor_time(start);
5159         } else {
5160                 show_verbose_cursor_time(pending_position);
5161         }
5162 }
5163
5164 void
5165 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5166 {
5167         Session* s = _editor->session();
5168
5169         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5170         if (movement_occurred) {
5171                 motion (event, false);
5172                 /* XXX this is not object-oriented programming at all. ick */
5173                 if (_editor->selection->time.consolidate()) {
5174                         _editor->selection->TimeChanged ();
5175                 }
5176
5177                 /* XXX what if its a music time selection? */
5178                 if (s) {
5179                         if (s->get_play_range() && s->transport_rolling()) {
5180                                 s->request_play_range (&_editor->selection->time, true);
5181                         } else if (!s->config.get_external_sync()) {
5182                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5183                                         if (_operation == SelectionEndTrim)
5184                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5185                                         else
5186                                                 s->request_locate (_editor->get_selection().time.start());
5187                                 }
5188                         }
5189
5190                         if (_editor->get_selection().time.length() != 0) {
5191                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5192                         } else {
5193                                 s->clear_range_selection ();
5194                         }
5195                 }
5196
5197         } else {
5198                 /* just a click, no pointer movement.
5199                  */
5200
5201                 if (_operation == SelectionExtend) {
5202                         if (_time_selection_at_start) {
5203                                 framepos_t pos = adjusted_current_frame (event, false);
5204                                 framepos_t start = min (pos, start_at_start);
5205                                 framepos_t end = max (pos, end_at_start);
5206                                 _editor->selection->set (start, end);
5207                         }
5208                 } else {
5209                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5210                                 if (_editor->clicked_selection) {
5211                                         _editor->selection->remove (_editor->clicked_selection);
5212                                 }
5213                         } else {
5214                                 if (!_editor->clicked_selection) {
5215                                         _editor->selection->clear_time();
5216                                 }
5217                         }
5218                 }
5219
5220                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5221                         _editor->selection->set (_editor->clicked_axisview);
5222                 }
5223
5224                 if (s && s->get_play_range () && s->transport_rolling()) {
5225                         s->request_stop (false, false);
5226                 }
5227
5228         }
5229
5230         _editor->stop_canvas_autoscroll ();
5231         _editor->clicked_selection = 0;
5232         _editor->commit_reversible_selection_op ();
5233 }
5234
5235 void
5236 SelectionDrag::aborted (bool)
5237 {
5238         /* XXX: TODO */
5239 }
5240
5241 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5242         : Drag (e, i, false),
5243           _operation (o),
5244           _copy (false)
5245 {
5246         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5247
5248         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5249                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5250                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5251         _drag_rect->hide ();
5252
5253         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5254         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5255 }
5256
5257 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5258 {
5259         /* normal canvas items will be cleaned up when their parent group is deleted. But
5260            this item is created as the child of a long-lived parent group, and so we
5261            need to explicitly delete it.
5262         */
5263         delete _drag_rect;
5264 }
5265
5266 void
5267 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5268 {
5269         if (_editor->session() == 0) {
5270                 return;
5271         }
5272
5273         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5274
5275         if (!_editor->temp_location) {
5276                 _editor->temp_location = new Location (*_editor->session());
5277         }
5278
5279         switch (_operation) {
5280         case CreateSkipMarker:
5281         case CreateRangeMarker:
5282         case CreateTransportMarker:
5283         case CreateCDMarker:
5284
5285                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5286                         _copy = true;
5287                 } else {
5288                         _copy = false;
5289                 }
5290                 cursor = _editor->cursors()->selector;
5291                 break;
5292         }
5293
5294         Drag::start_grab (event, cursor);
5295
5296         show_verbose_cursor_time (adjusted_current_frame (event));
5297 }
5298
5299 void
5300 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5301 {
5302         framepos_t start = 0;
5303         framepos_t end = 0;
5304         ArdourCanvas::Rectangle *crect;
5305
5306         switch (_operation) {
5307         case CreateSkipMarker:
5308                 crect = _editor->range_bar_drag_rect;
5309                 break;
5310         case CreateRangeMarker:
5311                 crect = _editor->range_bar_drag_rect;
5312                 break;
5313         case CreateTransportMarker:
5314                 crect = _editor->transport_bar_drag_rect;
5315                 break;
5316         case CreateCDMarker:
5317                 crect = _editor->cd_marker_bar_drag_rect;
5318                 break;
5319         default:
5320                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5321                 return;
5322                 break;
5323         }
5324
5325         framepos_t const pf = adjusted_current_frame (event);
5326
5327         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5328                 framepos_t grab = grab_frame ();
5329                 _editor->snap_to (grab);
5330
5331                 if (pf < grab_frame()) {
5332                         start = pf;
5333                         end = grab;
5334                 } else {
5335                         end = pf;
5336                         start = grab;
5337                 }
5338
5339                 /* first drag: Either add to the selection
5340                    or create a new selection.
5341                 */
5342
5343                 if (first_move) {
5344
5345                         _editor->temp_location->set (start, end);
5346
5347                         crect->show ();
5348
5349                         update_item (_editor->temp_location);
5350                         _drag_rect->show();
5351                         //_drag_rect->raise_to_top();
5352
5353                 }
5354         }
5355
5356         if (start != end) {
5357                 _editor->temp_location->set (start, end);
5358
5359                 double x1 = _editor->sample_to_pixel (start);
5360                 double x2 = _editor->sample_to_pixel (end);
5361                 crect->set_x0 (x1);
5362                 crect->set_x1 (x2);
5363
5364                 update_item (_editor->temp_location);
5365         }
5366
5367         show_verbose_cursor_time (pf);
5368
5369 }
5370
5371 void
5372 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5373 {
5374         Location * newloc = 0;
5375         string rangename;
5376         int flags;
5377
5378         if (movement_occurred) {
5379                 motion (event, false);
5380                 _drag_rect->hide();
5381
5382                 switch (_operation) {
5383                 case CreateSkipMarker:
5384                 case CreateRangeMarker:
5385                 case CreateCDMarker:
5386                     {
5387                         XMLNode &before = _editor->session()->locations()->get_state();
5388                         if (_operation == CreateSkipMarker) {
5389                                 _editor->begin_reversible_command (_("new skip marker"));
5390                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5391                                 flags = Location::IsRangeMarker | Location::IsSkip;
5392                                 _editor->range_bar_drag_rect->hide();
5393                         } else if (_operation == CreateCDMarker) {
5394                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5395                                 _editor->begin_reversible_command (_("new CD marker"));
5396                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5397                                 _editor->cd_marker_bar_drag_rect->hide();
5398                         } else {
5399                                 _editor->begin_reversible_command (_("new skip marker"));
5400                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5401                                 flags = Location::IsRangeMarker;
5402                                 _editor->range_bar_drag_rect->hide();
5403                         }
5404                         newloc = new Location (
5405                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5406                                 );
5407
5408                         _editor->session()->locations()->add (newloc, true);
5409                         XMLNode &after = _editor->session()->locations()->get_state();
5410                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5411                         _editor->commit_reversible_command ();
5412                         break;
5413                     }
5414
5415                 case CreateTransportMarker:
5416                         // popup menu to pick loop or punch
5417                         _editor->new_transport_marker_context_menu (&event->button, _item);
5418                         break;
5419                 }
5420
5421         } else {
5422
5423                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5424
5425                 if (_operation == CreateTransportMarker) {
5426
5427                         /* didn't drag, so just locate */
5428
5429                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5430
5431                 } else if (_operation == CreateCDMarker) {
5432
5433                         /* didn't drag, but mark is already created so do
5434                          * nothing */
5435
5436                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5437
5438                         framepos_t start;
5439                         framepos_t end;
5440
5441                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5442
5443                         if (end == max_framepos) {
5444                                 end = _editor->session()->current_end_frame ();
5445                         }
5446
5447                         if (start == max_framepos) {
5448                                 start = _editor->session()->current_start_frame ();
5449                         }
5450
5451                         switch (_editor->mouse_mode) {
5452                         case MouseObject:
5453                                 /* find the two markers on either side and then make the selection from it */
5454                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5455                                 break;
5456
5457                         case MouseRange:
5458                                 /* find the two markers on either side of the click and make the range out of it */
5459                                 _editor->selection->set (start, end);
5460                                 break;
5461
5462                         default:
5463                                 break;
5464                         }
5465                 }
5466         }
5467
5468         _editor->stop_canvas_autoscroll ();
5469 }
5470
5471 void
5472 RangeMarkerBarDrag::aborted (bool movement_occurred)
5473 {
5474         if (movement_occurred) {
5475                 _drag_rect->hide ();
5476         }
5477 }
5478
5479 void
5480 RangeMarkerBarDrag::update_item (Location* location)
5481 {
5482         double const x1 = _editor->sample_to_pixel (location->start());
5483         double const x2 = _editor->sample_to_pixel (location->end());
5484
5485         _drag_rect->set_x0 (x1);
5486         _drag_rect->set_x1 (x2);
5487 }
5488
5489 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5490         : Drag (e, i)
5491         , _cumulative_dx (0)
5492         , _cumulative_dy (0)
5493         , _was_selected (false)
5494 {
5495         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5496
5497         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5498         assert (_primary);
5499         _region = &_primary->region_view ();
5500         _note_height = _region->midi_stream_view()->note_height ();
5501 }
5502
5503 void
5504 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5505 {
5506         Drag::start_grab (event);
5507         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5508
5509         if (!(_was_selected = _primary->selected())) {
5510
5511                 /* tertiary-click means extend selection - we'll do that on button release,
5512                    so don't add it here, because otherwise we make it hard to figure
5513                    out the "extend-to" range.
5514                 */
5515
5516                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5517
5518                 if (!extend) {
5519                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5520
5521                         if (add) {
5522                                 _region->note_selected (_primary, true);
5523                         } else {
5524                                 _editor->get_selection().clear_points();
5525                                 _region->unique_select (_primary);
5526                         }
5527                 }
5528         }
5529 }
5530
5531 /** @return Current total drag x change in frames */
5532 frameoffset_t
5533 NoteDrag::total_dx (const guint state) const
5534 {
5535         /* dx in frames */
5536         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5537
5538         /* primary note time */
5539         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5540
5541         /* new time of the primary note in session frames */
5542         frameoffset_t st = n + dx + snap_delta (state);
5543
5544         framepos_t const rp = _region->region()->position ();
5545
5546         /* prevent the note being dragged earlier than the region's position */
5547         st = max (st, rp);
5548
5549         /* possibly snap and return corresponding delta */
5550
5551         bool snap = true;
5552
5553         if (ArdourKeyboard::indicates_snap (state)) {
5554                 if (_editor->snap_mode () != SnapOff) {
5555                         snap = false;
5556                 }
5557         } else {
5558                 if (_editor->snap_mode () == SnapOff) {
5559                         snap = false;
5560                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5561                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5562                                 snap = true;
5563                         }
5564                 }
5565         }
5566
5567         frameoffset_t ret;
5568         if (snap) {
5569                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5570                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5571         } else {
5572                 ret = st - n - snap_delta (state);
5573         }
5574         return ret;
5575 }
5576
5577 /** @return Current total drag y change in note number */
5578 int8_t
5579 NoteDrag::total_dy () const
5580 {
5581         MidiStreamView* msv = _region->midi_stream_view ();
5582         double const y = _region->midi_view()->y_position ();
5583         /* new current note */
5584         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5585         /* clamp */
5586         n = max (msv->lowest_note(), n);
5587         n = min (msv->highest_note(), n);
5588         /* and work out delta */
5589         return n - msv->y_to_note (grab_y() - y);
5590 }
5591
5592 void
5593 NoteDrag::motion (GdkEvent * event, bool)
5594 {
5595         /* Total change in x and y since the start of the drag */
5596         frameoffset_t const dx = total_dx (event->button.state);
5597         int8_t const dy = total_dy ();
5598
5599         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5600         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5601         double const tdy = -dy * _note_height - _cumulative_dy;
5602
5603         if (tdx || tdy) {
5604                 _cumulative_dx += tdx;
5605                 _cumulative_dy += tdy;
5606
5607                 int8_t note_delta = total_dy();
5608
5609                 _region->move_selection (tdx, tdy, note_delta);
5610
5611                 /* the new note value may be the same as the old one, but we
5612                  * don't know what that means because the selection may have
5613                  * involved more than one note and we might be doing something
5614                  * odd with them. so show the note value anyway, always.
5615                  */
5616
5617                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5618
5619                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5620         }
5621 }
5622
5623 void
5624 NoteDrag::finished (GdkEvent* ev, bool moved)
5625 {
5626         if (!moved) {
5627                 /* no motion - select note */
5628
5629                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5630                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5631
5632                         bool changed = false;
5633
5634                         if (_was_selected) {
5635                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5636                                 if (add) {
5637                                         _region->note_deselected (_primary);
5638                                         changed = true;
5639                                 } else {
5640                                         _editor->get_selection().clear_points();
5641                                         _region->unique_select (_primary);
5642                                         changed = true;
5643                                 }
5644                         } else {
5645                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5646                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5647
5648                                 if (!extend && !add && _region->selection_size() > 1) {
5649                                         _editor->get_selection().clear_points();
5650                                         _region->unique_select (_primary);
5651                                         changed = true;
5652                                 } else if (extend) {
5653                                         _region->note_selected (_primary, true, true);
5654                                         changed = true;
5655                                 } else {
5656                                         /* it was added during button press */
5657                                         changed = true;
5658
5659                                 }
5660                         }
5661
5662                         if (changed) {
5663                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5664                                 _editor->commit_reversible_selection_op();
5665                         }
5666                 }
5667         } else {
5668                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5669         }
5670 }
5671
5672 void
5673 NoteDrag::aborted (bool)
5674 {
5675         /* XXX: TODO */
5676 }
5677
5678 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5679 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5680         : Drag (editor, atv->base_item ())
5681         , _ranges (r)
5682         , _y_origin (atv->y_position())
5683         , _nothing_to_drag (false)
5684 {
5685         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5686         setup (atv->lines ());
5687 }
5688
5689 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5690 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5691         : Drag (editor, rv->get_canvas_group ())
5692         , _ranges (r)
5693         , _y_origin (rv->get_time_axis_view().y_position())
5694         , _nothing_to_drag (false)
5695         , _integral (false)
5696 {
5697         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5698
5699         list<boost::shared_ptr<AutomationLine> > lines;
5700
5701         AudioRegionView*      audio_view;
5702         AutomationRegionView* automation_view;
5703         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5704                 lines.push_back (audio_view->get_gain_line ());
5705         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5706                 lines.push_back (automation_view->line ());
5707                 _integral = true;
5708         } else {
5709                 error << _("Automation range drag created for invalid region type") << endmsg;
5710         }
5711
5712         setup (lines);
5713 }
5714
5715 /** @param lines AutomationLines to drag.
5716  *  @param offset Offset from the session start to the points in the AutomationLines.
5717  */
5718 void
5719 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5720 {
5721         /* find the lines that overlap the ranges being dragged */
5722         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5723         while (i != lines.end ()) {
5724                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5725                 ++j;
5726
5727                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5728
5729                 /* check this range against all the AudioRanges that we are using */
5730                 list<AudioRange>::const_iterator k = _ranges.begin ();
5731                 while (k != _ranges.end()) {
5732                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5733                                 break;
5734                         }
5735                         ++k;
5736                 }
5737
5738                 /* add it to our list if it overlaps at all */
5739                 if (k != _ranges.end()) {
5740                         Line n;
5741                         n.line = *i;
5742                         n.state = 0;
5743                         n.range = r;
5744                         _lines.push_back (n);
5745                 }
5746
5747                 i = j;
5748         }
5749
5750         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5751 }
5752
5753 double
5754 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5755 {
5756         return 1.0 - ((global_y - _y_origin) / line->height());
5757 }
5758
5759 double
5760 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5761 {
5762         const double v = list->eval(x);
5763         return _integral ? rint(v) : v;
5764 }
5765
5766 void
5767 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5768 {
5769         Drag::start_grab (event, cursor);
5770
5771         /* Get line states before we start changing things */
5772         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5773                 i->state = &i->line->get_state ();
5774                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5775         }
5776
5777         if (_ranges.empty()) {
5778
5779                 /* No selected time ranges: drag all points */
5780                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5781                         uint32_t const N = i->line->npoints ();
5782                         for (uint32_t j = 0; j < N; ++j) {
5783                                 i->points.push_back (i->line->nth (j));
5784                         }
5785                 }
5786
5787         }
5788
5789         if (_nothing_to_drag) {
5790                 return;
5791         }
5792 }
5793
5794 void
5795 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5796 {
5797         if (_nothing_to_drag && !first_move) {
5798                 return;
5799         }
5800
5801         if (first_move) {
5802                 _editor->begin_reversible_command (_("automation range move"));
5803
5804                 if (!_ranges.empty()) {
5805
5806                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5807
5808                                 framecnt_t const half = (i->start + i->end) / 2;
5809
5810                                 /* find the line that this audio range starts in */
5811                                 list<Line>::iterator j = _lines.begin();
5812                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5813                                         ++j;
5814                                 }
5815
5816                                 if (j != _lines.end()) {
5817                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5818
5819                                 /* j is the line that this audio range starts in; fade into it;
5820                                    64 samples length plucked out of thin air.
5821                                 */
5822
5823                                         framepos_t a = i->start + 64;
5824                                         if (a > half) {
5825                                                 a = half;
5826                                         }
5827
5828                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5829                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5830
5831                                         XMLNode &before = the_list->get_state();
5832                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5833                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5834
5835                                         if (add_p || add_q) {
5836                                                 _editor->session()->add_command (
5837                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5838                                         }
5839                                 }
5840
5841                                 /* same thing for the end */
5842
5843                                 j = _lines.begin();
5844                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5845                                         ++j;
5846                                 }
5847
5848                                 if (j != _lines.end()) {
5849                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5850
5851                                         /* j is the line that this audio range starts in; fade out of it;
5852                                            64 samples length plucked out of thin air.
5853                                         */
5854
5855                                         framepos_t b = i->end - 64;
5856                                         if (b < half) {
5857                                                 b = half;
5858                                         }
5859
5860                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5861                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5862
5863                                         XMLNode &before = the_list->get_state();
5864                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5865                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5866
5867                                         if (add_p || add_q) {
5868                                                 _editor->session()->add_command (
5869                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5870                                         }
5871                                 }
5872                         }
5873
5874                         _nothing_to_drag = true;
5875
5876                         /* Find all the points that should be dragged and put them in the relevant
5877                            points lists in the Line structs.
5878                         */
5879
5880                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5881
5882                                 uint32_t const N = i->line->npoints ();
5883                                 for (uint32_t j = 0; j < N; ++j) {
5884
5885                                         /* here's a control point on this line */
5886                                         ControlPoint* p = i->line->nth (j);
5887                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5888
5889                                         /* see if it's inside a range */
5890                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5891                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5892                                                 ++k;
5893                                         }
5894
5895                                         if (k != _ranges.end()) {
5896                                                 /* dragging this point */
5897                                                 _nothing_to_drag = false;
5898                                                 i->points.push_back (p);
5899                                         }
5900                                 }
5901                         }
5902                 }
5903
5904                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5905                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5906                 }
5907         }
5908
5909         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5910                 float const f = y_fraction (l->line, current_pointer_y());
5911                 /* we are ignoring x position for this drag, so we can just pass in anything */
5912                 pair<double, float> result;
5913                 uint32_t ignored;
5914                 result = l->line->drag_motion (0, f, true, false, ignored);
5915                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5916         }
5917 }
5918
5919 void
5920 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5921 {
5922         if (_nothing_to_drag || !motion_occurred) {
5923                 return;
5924         }
5925
5926         motion (event, false);
5927         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5928                 i->line->end_drag (false, 0);
5929         }
5930
5931         _editor->commit_reversible_command ();
5932 }
5933
5934 void
5935 AutomationRangeDrag::aborted (bool)
5936 {
5937         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5938                 i->line->reset ();
5939         }
5940 }
5941
5942 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5943         : view (v)
5944         , initial_time_axis_view (itav)
5945 {
5946         /* note that time_axis_view may be null if the regionview was created
5947          * as part of a copy operation.
5948          */
5949         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5950         layer = v->region()->layer ();
5951         initial_y = v->get_canvas_group()->position().y;
5952         initial_playlist = v->region()->playlist ();
5953         initial_position = v->region()->position ();
5954         initial_end = v->region()->position () + v->region()->length ();
5955 }
5956
5957 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5958         : Drag (e, i->canvas_item ())
5959         , _region_view (r)
5960         , _patch_change (i)
5961         , _cumulative_dx (0)
5962 {
5963         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5964                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5965                                                    grab_frame()));
5966 }
5967
5968 void
5969 PatchChangeDrag::motion (GdkEvent* ev, bool)
5970 {
5971         framepos_t f = adjusted_current_frame (ev);
5972         boost::shared_ptr<Region> r = _region_view->region ();
5973         f = max (f, r->position ());
5974         f = min (f, r->last_frame ());
5975
5976         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5977         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5978         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5979         _cumulative_dx = dxu;
5980 }
5981
5982 void
5983 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5984 {
5985         if (!movement_occurred) {
5986                 return;
5987         }
5988
5989         boost::shared_ptr<Region> r (_region_view->region ());
5990         framepos_t f = adjusted_current_frame (ev);
5991         f = max (f, r->position ());
5992         f = min (f, r->last_frame ());
5993
5994         _region_view->move_patch_change (
5995                 *_patch_change,
5996                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5997                 );
5998 }
5999
6000 void
6001 PatchChangeDrag::aborted (bool)
6002 {
6003         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
6004 }
6005
6006 void
6007 PatchChangeDrag::setup_pointer_frame_offset ()
6008 {
6009         boost::shared_ptr<Region> region = _region_view->region ();
6010         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
6011 }
6012
6013 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
6014         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6015         , _region_view (rv)
6016 {
6017
6018 }
6019
6020 void
6021 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
6022 {
6023         _region_view->update_drag_selection (
6024                 x1, x2, y1, y2,
6025                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
6026 }
6027
6028 void
6029 MidiRubberbandSelectDrag::deselect_things ()
6030 {
6031         /* XXX */
6032 }
6033
6034 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6035         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6036         , _region_view (rv)
6037 {
6038         _vertical_only = true;
6039 }
6040
6041 void
6042 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6043 {
6044         double const y = _region_view->midi_view()->y_position ();
6045
6046         y1 = max (0.0, y1 - y);
6047         y2 = max (0.0, y2 - y);
6048
6049         _region_view->update_vertical_drag_selection (
6050                 y1,
6051                 y2,
6052                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6053                 );
6054 }
6055
6056 void
6057 MidiVerticalSelectDrag::deselect_things ()
6058 {
6059         /* XXX */
6060 }
6061
6062 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6063         : RubberbandSelectDrag (e, i)
6064 {
6065
6066 }
6067
6068 void
6069 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6070 {
6071         if (drag_in_progress) {
6072                 /* We just want to select things at the end of the drag, not during it */
6073                 return;
6074         }
6075
6076         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6077
6078         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6079
6080         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6081
6082         _editor->commit_reversible_selection_op ();
6083 }
6084
6085 void
6086 EditorRubberbandSelectDrag::deselect_things ()
6087 {
6088         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6089
6090         _editor->selection->clear_tracks();
6091         _editor->selection->clear_regions();
6092         _editor->selection->clear_points ();
6093         _editor->selection->clear_lines ();
6094         _editor->selection->clear_midi_notes ();
6095
6096         _editor->commit_reversible_selection_op();
6097 }
6098
6099 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6100         : Drag (e, i)
6101         , _region_view (rv)
6102         , _drag_rect (0)
6103 {
6104         _note[0] = _note[1] = 0;
6105 }
6106
6107 NoteCreateDrag::~NoteCreateDrag ()
6108 {
6109         delete _drag_rect;
6110 }
6111
6112 framecnt_t
6113 NoteCreateDrag::grid_frames (framepos_t t) const
6114 {
6115         bool success;
6116         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6117         if (!success) {
6118                 grid_beats = Evoral::Beats(1);
6119         }
6120
6121         return _region_view->region_beats_to_region_frames (grid_beats);
6122 }
6123
6124 void
6125 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6126 {
6127         Drag::start_grab (event, cursor);
6128
6129         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6130
6131         framepos_t pf = _drags->current_pointer_frame ();
6132         framecnt_t const g = grid_frames (pf);
6133
6134         /* Hack so that we always snap to the note that we are over, instead of snapping
6135            to the next one if we're more than halfway through the one we're over.
6136         */
6137         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6138                 pf -= g / 2;
6139         }
6140
6141         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6142         _note[1] = _note[0];
6143
6144         MidiStreamView* sv = _region_view->midi_stream_view ();
6145         double const x = _editor->sample_to_pixel (_note[0]);
6146         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6147
6148         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6149         _drag_rect->set_outline_all ();
6150         _drag_rect->set_outline_color (0xffffff99);
6151         _drag_rect->set_fill_color (0xffffff66);
6152 }
6153
6154 void
6155 NoteCreateDrag::motion (GdkEvent* event, bool)
6156 {
6157         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6158         double const x0 = _editor->sample_to_pixel (_note[0]);
6159         double const x1 = _editor->sample_to_pixel (_note[1]);
6160         _drag_rect->set_x0 (std::min(x0, x1));
6161         _drag_rect->set_x1 (std::max(x0, x1));
6162 }
6163
6164 void
6165 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6166 {
6167         if (!had_movement) {
6168                 return;
6169         }
6170
6171         framepos_t const start = min (_note[0], _note[1]);
6172         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6173
6174         framecnt_t const g = grid_frames (start);
6175         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6176
6177         if (_editor->snap_mode() == SnapNormal && length < g) {
6178                 length = g;
6179         }
6180
6181         Evoral::Beats length_beats = max (
6182                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6183
6184         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6185 }
6186
6187 double
6188 NoteCreateDrag::y_to_region (double y) const
6189 {
6190         double x = 0;
6191         _region_view->get_canvas_group()->canvas_to_item (x, y);
6192         return y;
6193 }
6194
6195 void
6196 NoteCreateDrag::aborted (bool)
6197 {
6198
6199 }
6200
6201 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6202         : Drag (e, i)
6203         , arv (rv)
6204         , start (start_yn)
6205 {
6206         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6207 }
6208
6209 void
6210 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6211 {
6212         Drag::start_grab (event, cursor);
6213 }
6214
6215 void
6216 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6217 {
6218         double distance;
6219         double new_length;
6220         framecnt_t len;
6221
6222         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6223
6224         if (start) {
6225                 distance = _drags->current_pointer_x() - grab_x();
6226                 len = ar->fade_in()->back()->when;
6227         } else {
6228                 distance = grab_x() - _drags->current_pointer_x();
6229                 len = ar->fade_out()->back()->when;
6230         }
6231
6232         /* how long should it be ? */
6233
6234         new_length = len + _editor->pixel_to_sample (distance);
6235
6236         /* now check with the region that this is legal */
6237
6238         new_length = ar->verify_xfade_bounds (new_length, start);
6239
6240         if (start) {
6241                 arv->reset_fade_in_shape_width (ar, new_length);
6242         } else {
6243                 arv->reset_fade_out_shape_width (ar, new_length);
6244         }
6245 }
6246
6247 void
6248 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6249 {
6250         double distance;
6251         double new_length;
6252         framecnt_t len;
6253
6254         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6255
6256         if (start) {
6257                 distance = _drags->current_pointer_x() - grab_x();
6258                 len = ar->fade_in()->back()->when;
6259         } else {
6260                 distance = grab_x() - _drags->current_pointer_x();
6261                 len = ar->fade_out()->back()->when;
6262         }
6263
6264         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6265
6266         _editor->begin_reversible_command ("xfade trim");
6267         ar->playlist()->clear_owned_changes ();
6268
6269         if (start) {
6270                 ar->set_fade_in_length (new_length);
6271         } else {
6272                 ar->set_fade_out_length (new_length);
6273         }
6274
6275         /* Adjusting the xfade may affect other regions in the playlist, so we need
6276            to get undo Commands from the whole playlist rather than just the
6277            region.
6278         */
6279
6280         vector<Command*> cmds;
6281         ar->playlist()->rdiff (cmds);
6282         _editor->session()->add_commands (cmds);
6283         _editor->commit_reversible_command ();
6284
6285 }
6286
6287 void
6288 CrossfadeEdgeDrag::aborted (bool)
6289 {
6290         if (start) {
6291                 // arv->redraw_start_xfade ();
6292         } else {
6293                 // arv->redraw_end_xfade ();
6294         }
6295 }
6296
6297 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6298         : Drag (e, item, true)
6299         , line (new EditorCursor (*e))
6300 {
6301         line->set_position (pos);
6302         line->show ();
6303 }
6304
6305 RegionCutDrag::~RegionCutDrag ()
6306 {
6307         delete line;
6308 }
6309
6310 void
6311 RegionCutDrag::motion (GdkEvent*, bool)
6312 {
6313         framepos_t where = _drags->current_pointer_frame();
6314         _editor->snap_to (where);
6315
6316         line->set_position (where);
6317 }
6318
6319 void
6320 RegionCutDrag::finished (GdkEvent*, bool)
6321 {
6322         _editor->get_track_canvas()->canvas()->re_enter();
6323
6324         framepos_t pos = _drags->current_pointer_frame();
6325
6326         line->hide ();
6327
6328         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6329
6330         if (rs.empty()) {
6331                 return;
6332         }
6333
6334         _editor->split_regions_at (pos, rs);
6335 }
6336
6337 void
6338 RegionCutDrag::aborted (bool)
6339 {
6340 }