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 for visual representation of moving the
3152                 // section, because whether its a copy or not, we're going to
3153                 // leave or lose the original marker (leave if its a copy; lose if its
3154                 // not, because we'll remove it from the map).
3155
3156                 char name[64];
3157                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3158
3159                 MeterSection section (_marker->meter());
3160
3161                 if (!section.movable()) {
3162                         return;
3163                 }
3164
3165                 _marker = new MeterMarker (
3166                         *_editor,
3167                         *_editor->meter_group,
3168                         UIConfiguration::instance().color ("meter marker"),
3169                         name,
3170                         *new MeterSection (_marker->meter())
3171                 );
3172
3173                 /* use the new marker for the grab */
3174                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3175
3176                 if (!_copy) {
3177                         _editor->begin_reversible_command (_("move meter mark"));
3178                         TempoMap& map (_editor->session()->tempo_map());
3179                         /* get current state */
3180                         before_state = &map.get_state();
3181                         /* remove the section while we drag it */
3182                         //map.remove_meter (section, true);
3183                 }
3184                 _marker->hide();
3185         }
3186
3187         framepos_t const pf = adjusted_current_frame (event, false);
3188         double const baf = _editor->session()->tempo_map().beat_at_frame (pf);
3189
3190         _marker->set_position (pf);
3191         _editor->session()->tempo_map().gui_move_meter (_real_section, _marker->meter(), pf, baf);
3192
3193         show_verbose_cursor_time (pf);
3194 }
3195
3196 void
3197 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3198 {
3199         if (!movement_occurred) {
3200                 if (was_double_click()) {
3201                         _editor->edit_meter_marker (*_marker);
3202                 }
3203                 return;
3204         }
3205
3206         if (!_marker->meter().movable()) {
3207                 return;
3208         }
3209
3210         motion (event, false);
3211
3212         Timecode::BBT_Time when;
3213
3214         TempoMap& map (_editor->session()->tempo_map());
3215         map.bbt_time (_marker->position(), when);
3216
3217         if (_copy == true) {
3218                 _editor->begin_reversible_command (_("copy meter mark"));
3219                 XMLNode &before = map.get_state();
3220
3221                 if (_marker->meter().position_lock_style() == AudioTime) {
3222                         map.add_meter (_marker->meter(), _marker->position());
3223                 } else {
3224                         map.add_meter (_marker->meter(), map.bbt_to_beats (when), when);
3225                 }
3226
3227                 XMLNode &after = map.get_state();
3228                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
3229                 _editor->commit_reversible_command ();
3230
3231         } else {
3232                 /* we removed it before, so add it back now */
3233                 if (_marker->meter().position_lock_style() == AudioTime) {
3234                         map.add_meter (_marker->meter(), _marker->position());
3235                 } else {
3236                         map.add_meter (_marker->meter(), map.beat_at_frame (_marker->position()), when);
3237                 }
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
3244         // delete the dummy marker we used for visual representation while moving.
3245         // a new visual marker will show up automatically.
3246         delete _marker;
3247 }
3248
3249 void
3250 MeterMarkerDrag::aborted (bool moved)
3251 {
3252         _marker->set_position (_marker->meter().frame ());
3253
3254         if (moved) {
3255                 TempoMap& map (_editor->session()->tempo_map());
3256                 /* we removed it before, so add it back now */
3257                 map.add_meter (_marker->meter(), map.beat_at_frame (_marker->meter().frame()), _marker->meter().bbt());
3258                 // delete the dummy marker we used for visual representation while moving.
3259                 // a new visual marker will show up automatically.
3260                 delete _marker;
3261         }
3262 }
3263
3264 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3265         : Drag (e, i)
3266         , _copy (c)
3267         , before_state (0)
3268 {
3269         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3270
3271         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3272         _real_section = &_marker->tempo();
3273         assert (_marker);
3274 }
3275
3276 void
3277 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3278 {
3279         Drag::start_grab (event, cursor);
3280         show_verbose_cursor_time (adjusted_current_frame (event));
3281 }
3282
3283 void
3284 TempoMarkerDrag::setup_pointer_frame_offset ()
3285 {
3286         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3287 }
3288
3289 void
3290 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3291 {
3292         if (!_marker->tempo().movable()) {
3293                 return;
3294         }
3295
3296         if (first_move) {
3297
3298                 // create a dummy marker for visual representation of moving the
3299                 // section, because whether its a copy or not, we're going to
3300                 // leave or lose the original marker (leave if its a copy; lose if its
3301                 // not, because we'll remove it from the map).
3302
3303                 // create a dummy marker for visual representation of moving the copy.
3304                 // The actual copying is not done before we reach the finish callback.
3305
3306                 char name[64];
3307                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3308
3309                 TempoSection section (_marker->tempo());
3310
3311                 _marker = new TempoMarker (
3312                         *_editor,
3313                         *_editor->tempo_group,
3314                         UIConfiguration::instance().color ("tempo marker"),
3315                         name,
3316                         *new TempoSection (_marker->tempo())
3317                         );
3318
3319                 /* use the new marker for the grab */
3320                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3321
3322                 if (!_copy) {
3323                         _editor->begin_reversible_command (_("move tempo mark"));
3324                         TempoMap& map (_editor->session()->tempo_map());
3325                         /* get current state */
3326                         before_state = &map.get_state();
3327                 }
3328                 _marker->hide();
3329         }
3330
3331         framepos_t const pf = adjusted_current_frame (event, false);
3332         Tempo const tp = _marker->tempo();
3333         _marker->set_position (pf);
3334         _editor->session()->tempo_map().gui_move_tempo (_real_section, tp, pf);
3335
3336         show_verbose_cursor_time (pf);
3337 }
3338
3339 void
3340 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3341 {
3342         if (!movement_occurred) {
3343                 if (was_double_click()) {
3344                         _editor->edit_tempo_marker (*_marker);
3345                 }
3346                 return;
3347         }
3348
3349         if (!_marker->tempo().movable()) {
3350                 return;
3351         }
3352
3353         //motion (event, false);
3354
3355         TempoMap& map (_editor->session()->tempo_map());
3356
3357         if (_copy == true) {
3358                 _editor->begin_reversible_command (_("copy tempo mark"));
3359                 XMLNode &before = map.get_state();
3360
3361                 if (_marker->tempo().position_lock_style() == MusicTime) {
3362                         map.add_tempo (_marker->tempo(), _real_section->beat(), _marker->tempo().type());
3363                 } else {
3364                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3365                 }
3366
3367                 XMLNode &after = map.get_state();
3368                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3369                 _editor->commit_reversible_command ();
3370
3371         } else {
3372                 /* we removed it before, so add it back now */
3373                 if (_marker->tempo().position_lock_style() == MusicTime) {
3374                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->beat(), _marker->tempo().type());
3375                 } else {
3376                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->frame(), _marker->tempo().type());
3377                 }
3378
3379                 XMLNode &after = map.get_state();
3380                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3381                 _editor->commit_reversible_command ();
3382         }
3383
3384         // delete the dummy marker we used for visual representation while moving.
3385         // a new visual marker will show up automatically.
3386         delete _marker;
3387 }
3388
3389 void
3390 TempoMarkerDrag::aborted (bool moved)
3391 {
3392         _marker->set_position (_marker->tempo().frame());
3393         if (moved) {
3394                 TempoMap& map (_editor->session()->tempo_map());
3395                 /* we removed it before, so add it back now */
3396                 if (_marker->tempo().position_lock_style() == MusicTime) {
3397                         map.add_tempo (_marker->tempo(), _marker->tempo().beat(), _marker->tempo().type());
3398                 } else {
3399                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3400                 }
3401                 // delete the dummy marker we used for visual representation while moving.
3402                 // a new visual marker will show up automatically.
3403                 delete _marker;
3404         }
3405 }
3406
3407 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3408         : Drag (e, &c.track_canvas_item(), false)
3409         , _cursor (c)
3410         , _stop (s)
3411         , _grab_zoom (0.0)
3412 {
3413         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3414 }
3415
3416 /** Do all the things we do when dragging the playhead to make it look as though
3417  *  we have located, without actually doing the locate (because that would cause
3418  *  the diskstream buffers to be refilled, which is too slow).
3419  */
3420 void
3421 CursorDrag::fake_locate (framepos_t t)
3422 {
3423         if (_editor->session () == 0) {
3424                 return;
3425         }
3426
3427         _editor->playhead_cursor->set_position (t);
3428
3429         Session* s = _editor->session ();
3430         if (s->timecode_transmission_suspended ()) {
3431                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3432                 /* This is asynchronous so it will be sent "now"
3433                  */
3434                 s->send_mmc_locate (f);
3435                 /* These are synchronous and will be sent during the next
3436                    process cycle
3437                 */
3438                 s->queue_full_time_code ();
3439                 s->queue_song_position_pointer ();
3440         }
3441
3442         show_verbose_cursor_time (t);
3443         _editor->UpdateAllTransportClocks (t);
3444 }
3445
3446 void
3447 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3448 {
3449         Drag::start_grab (event, c);
3450         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3451
3452         _grab_zoom = _editor->samples_per_pixel;
3453
3454         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3455
3456         _editor->snap_to_with_modifier (where, event);
3457
3458         _editor->_dragging_playhead = true;
3459
3460         Session* s = _editor->session ();
3461
3462         /* grab the track canvas item as well */
3463
3464         _cursor.track_canvas_item().grab();
3465
3466         if (s) {
3467                 if (_was_rolling && _stop) {
3468                         s->request_stop ();
3469                 }
3470
3471                 if (s->is_auditioning()) {
3472                         s->cancel_audition ();
3473                 }
3474
3475
3476                 if (AudioEngine::instance()->connected()) {
3477
3478                         /* do this only if we're the engine is connected
3479                          * because otherwise this request will never be
3480                          * serviced and we'll busy wait forever. likewise,
3481                          * notice if we are disconnected while waiting for the
3482                          * request to be serviced.
3483                          */
3484
3485                         s->request_suspend_timecode_transmission ();
3486                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3487                                 /* twiddle our thumbs */
3488                         }
3489                 }
3490         }
3491
3492         fake_locate (where - snap_delta (event->button.state));
3493 }
3494
3495 void
3496 CursorDrag::motion (GdkEvent* event, bool)
3497 {
3498         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3499         _editor->snap_to_with_modifier (where, event);
3500         if (where != last_pointer_frame()) {
3501                 fake_locate (where - snap_delta (event->button.state));
3502         }
3503 }
3504
3505 void
3506 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3507 {
3508         _editor->_dragging_playhead = false;
3509
3510         _cursor.track_canvas_item().ungrab();
3511
3512         if (!movement_occurred && _stop) {
3513                 return;
3514         }
3515
3516         motion (event, false);
3517
3518         Session* s = _editor->session ();
3519         if (s) {
3520                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3521                 _editor->_pending_locate_request = true;
3522                 s->request_resume_timecode_transmission ();
3523         }
3524 }
3525
3526 void
3527 CursorDrag::aborted (bool)
3528 {
3529         _cursor.track_canvas_item().ungrab();
3530
3531         if (_editor->_dragging_playhead) {
3532                 _editor->session()->request_resume_timecode_transmission ();
3533                 _editor->_dragging_playhead = false;
3534         }
3535
3536         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3537 }
3538
3539 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3540         : RegionDrag (e, i, p, v)
3541 {
3542         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3543 }
3544
3545 void
3546 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3547 {
3548         Drag::start_grab (event, cursor);
3549
3550         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3551         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3552         setup_snap_delta (r->position ());
3553
3554         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3555 }
3556
3557 void
3558 FadeInDrag::setup_pointer_frame_offset ()
3559 {
3560         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3561         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3562         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3563 }
3564
3565 void
3566 FadeInDrag::motion (GdkEvent* event, bool)
3567 {
3568         framecnt_t fade_length;
3569
3570         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3571         _editor->snap_to_with_modifier (pos, event);
3572         pos -= snap_delta (event->button.state);
3573
3574         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3575
3576         if (pos < (region->position() + 64)) {
3577                 fade_length = 64; // this should be a minimum defined somewhere
3578         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3579                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3580         } else {
3581                 fade_length = pos - region->position();
3582         }
3583
3584         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3585
3586                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3587
3588                 if (!tmp) {
3589                         continue;
3590                 }
3591
3592                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3593         }
3594
3595         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3596 }
3597
3598 void
3599 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3600 {
3601         if (!movement_occurred) {
3602                 return;
3603         }
3604
3605         framecnt_t fade_length;
3606         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3607         _editor->snap_to_with_modifier (pos, event);
3608         pos -= snap_delta (event->button.state);
3609
3610         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3611
3612         if (pos < (region->position() + 64)) {
3613                 fade_length = 64; // this should be a minimum defined somewhere
3614         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3615                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3616         } else {
3617                 fade_length = pos - region->position();
3618         }
3619
3620         bool in_command = false;
3621
3622         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3623
3624                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3625
3626                 if (!tmp) {
3627                         continue;
3628                 }
3629
3630                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3631                 XMLNode &before = alist->get_state();
3632
3633                 tmp->audio_region()->set_fade_in_length (fade_length);
3634                 tmp->audio_region()->set_fade_in_active (true);
3635
3636                 if (!in_command) {
3637                         _editor->begin_reversible_command (_("change fade in length"));
3638                         in_command = true;
3639                 }
3640                 XMLNode &after = alist->get_state();
3641                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3642         }
3643
3644         if (in_command) {
3645                 _editor->commit_reversible_command ();
3646         }
3647 }
3648
3649 void
3650 FadeInDrag::aborted (bool)
3651 {
3652         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3653                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3654
3655                 if (!tmp) {
3656                         continue;
3657                 }
3658
3659                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3660         }
3661 }
3662
3663 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3664         : RegionDrag (e, i, p, v)
3665 {
3666         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3667 }
3668
3669 void
3670 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3671 {
3672         Drag::start_grab (event, cursor);
3673
3674         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3675         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3676         setup_snap_delta (r->last_frame ());
3677
3678         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3679 }
3680
3681 void
3682 FadeOutDrag::setup_pointer_frame_offset ()
3683 {
3684         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3685         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3686         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3687 }
3688
3689 void
3690 FadeOutDrag::motion (GdkEvent* event, bool)
3691 {
3692         framecnt_t fade_length;
3693
3694         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3695         _editor->snap_to_with_modifier (pos, event);
3696         pos -= snap_delta (event->button.state);
3697
3698         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3699
3700         if (pos > (region->last_frame() - 64)) {
3701                 fade_length = 64; // this should really be a minimum fade defined somewhere
3702         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3703                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3704         } else {
3705                 fade_length = region->last_frame() - pos;
3706         }
3707
3708         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3709
3710                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3711
3712                 if (!tmp) {
3713                         continue;
3714                 }
3715
3716                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3717         }
3718
3719         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3720 }
3721
3722 void
3723 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3724 {
3725         if (!movement_occurred) {
3726                 return;
3727         }
3728
3729         framecnt_t fade_length;
3730
3731         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3732         _editor->snap_to_with_modifier (pos, event);
3733         pos -= snap_delta (event->button.state);
3734
3735         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3736
3737         if (pos > (region->last_frame() - 64)) {
3738                 fade_length = 64; // this should really be a minimum fade defined somewhere
3739         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3740                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3741         } else {
3742                 fade_length = region->last_frame() - pos;
3743         }
3744
3745         bool in_command = false;
3746
3747         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3748
3749                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3750
3751                 if (!tmp) {
3752                         continue;
3753                 }
3754
3755                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3756                 XMLNode &before = alist->get_state();
3757
3758                 tmp->audio_region()->set_fade_out_length (fade_length);
3759                 tmp->audio_region()->set_fade_out_active (true);
3760
3761                 if (!in_command) {
3762                         _editor->begin_reversible_command (_("change fade out length"));
3763                         in_command = true;
3764                 }
3765                 XMLNode &after = alist->get_state();
3766                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3767         }
3768
3769         if (in_command) {
3770                 _editor->commit_reversible_command ();
3771         }
3772 }
3773
3774 void
3775 FadeOutDrag::aborted (bool)
3776 {
3777         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3778                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3779
3780                 if (!tmp) {
3781                         continue;
3782                 }
3783
3784                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3785         }
3786 }
3787
3788 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3789         : Drag (e, i)
3790         , _selection_changed (false)
3791 {
3792         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3793         Gtk::Window* toplevel = _editor->current_toplevel();
3794         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3795
3796         assert (_marker);
3797
3798         _points.push_back (ArdourCanvas::Duple (0, 0));
3799
3800         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3801 }
3802
3803 MarkerDrag::~MarkerDrag ()
3804 {
3805         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3806                 delete i->location;
3807         }
3808 }
3809
3810 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3811 {
3812         location = new Location (*l);
3813         markers.push_back (m);
3814         move_both = false;
3815 }
3816
3817 void
3818 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3819 {
3820         Drag::start_grab (event, cursor);
3821
3822         bool is_start;
3823
3824         Location *location = _editor->find_location_from_marker (_marker, is_start);
3825         _editor->_dragging_edit_point = true;
3826
3827         update_item (location);
3828
3829         // _drag_line->show();
3830         // _line->raise_to_top();
3831
3832         if (is_start) {
3833                 show_verbose_cursor_time (location->start());
3834         } else {
3835                 show_verbose_cursor_time (location->end());
3836         }
3837         setup_snap_delta (is_start ? location->start() : location->end());
3838
3839         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3840
3841         switch (op) {
3842         case Selection::Toggle:
3843                 /* we toggle on the button release */
3844                 break;
3845         case Selection::Set:
3846                 if (!_editor->selection->selected (_marker)) {
3847                         _editor->selection->set (_marker);
3848                         _selection_changed = true;
3849                 }
3850                 break;
3851         case Selection::Extend:
3852         {
3853                 Locations::LocationList ll;
3854                 list<ArdourMarker*> to_add;
3855                 framepos_t s, e;
3856                 _editor->selection->markers.range (s, e);
3857                 s = min (_marker->position(), s);
3858                 e = max (_marker->position(), e);
3859                 s = min (s, e);
3860                 e = max (s, e);
3861                 if (e < max_framepos) {
3862                         ++e;
3863                 }
3864                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3865                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3866                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3867                         if (lm) {
3868                                 if (lm->start) {
3869                                         to_add.push_back (lm->start);
3870                                 }
3871                                 if (lm->end) {
3872                                         to_add.push_back (lm->end);
3873                                 }
3874                         }
3875                 }
3876                 if (!to_add.empty()) {
3877                         _editor->selection->add (to_add);
3878                         _selection_changed = true;
3879                 }
3880                 break;
3881         }
3882         case Selection::Add:
3883                 _editor->selection->add (_marker);
3884                 _selection_changed = true;
3885
3886                 break;
3887         }
3888
3889         /* Set up copies for us to manipulate during the drag
3890          */
3891
3892         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3893
3894                 Location* l = _editor->find_location_from_marker (*i, is_start);
3895
3896                 if (!l) {
3897                         continue;
3898                 }
3899
3900                 if (l->is_mark()) {
3901                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3902                 } else {
3903                         /* range: check that the other end of the range isn't
3904                            already there.
3905                         */
3906                         CopiedLocationInfo::iterator x;
3907                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3908                                 if (*(*x).location == *l) {
3909                                         break;
3910                                 }
3911                         }
3912                         if (x == _copied_locations.end()) {
3913                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3914                         } else {
3915                                 (*x).markers.push_back (*i);
3916                                 (*x).move_both = true;
3917                         }
3918                 }
3919
3920         }
3921 }
3922
3923 void
3924 MarkerDrag::setup_pointer_frame_offset ()
3925 {
3926         bool is_start;
3927         Location *location = _editor->find_location_from_marker (_marker, is_start);
3928         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3929 }
3930
3931 void
3932 MarkerDrag::motion (GdkEvent* event, bool)
3933 {
3934         framecnt_t f_delta = 0;
3935         bool is_start;
3936         bool move_both = false;
3937         Location *real_location;
3938         Location *copy_location = 0;
3939         framecnt_t const sd = snap_delta (event->button.state);
3940
3941         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3942         framepos_t next = newframe;
3943
3944         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3945                 move_both = true;
3946         }
3947
3948         CopiedLocationInfo::iterator x;
3949
3950         /* find the marker we're dragging, and compute the delta */
3951
3952         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3953
3954                 copy_location = (*x).location;
3955
3956                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3957
3958                         /* this marker is represented by this
3959                          * CopiedLocationMarkerInfo
3960                          */
3961
3962                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3963                                 /* que pasa ?? */
3964                                 return;
3965                         }
3966
3967                         if (real_location->is_mark()) {
3968                                 f_delta = newframe - copy_location->start();
3969                         } else {
3970
3971
3972                                 switch (_marker->type()) {
3973                                 case ArdourMarker::SessionStart:
3974                                 case ArdourMarker::RangeStart:
3975                                 case ArdourMarker::LoopStart:
3976                                 case ArdourMarker::PunchIn:
3977                                         f_delta = newframe - copy_location->start();
3978                                         break;
3979
3980                                 case ArdourMarker::SessionEnd:
3981                                 case ArdourMarker::RangeEnd:
3982                                 case ArdourMarker::LoopEnd:
3983                                 case ArdourMarker::PunchOut:
3984                                         f_delta = newframe - copy_location->end();
3985                                         break;
3986                                 default:
3987                                         /* what kind of marker is this ? */
3988                                         return;
3989                                 }
3990                         }
3991
3992                         break;
3993                 }
3994         }
3995
3996         if (x == _copied_locations.end()) {
3997                 /* hmm, impossible - we didn't find the dragged marker */
3998                 return;
3999         }
4000
4001         /* now move them all */
4002
4003         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4004
4005                 copy_location = x->location;
4006
4007                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4008                         continue;
4009                 }
4010
4011                 if (real_location->locked()) {
4012                         continue;
4013                 }
4014
4015                 if (copy_location->is_mark()) {
4016
4017                         /* now move it */
4018
4019                         copy_location->set_start (copy_location->start() + f_delta);
4020
4021                 } else {
4022
4023                         framepos_t new_start = copy_location->start() + f_delta;
4024                         framepos_t new_end = copy_location->end() + f_delta;
4025
4026                         if (is_start) { // start-of-range marker
4027
4028                                 if (move_both || (*x).move_both) {
4029                                         copy_location->set_start (new_start);
4030                                         copy_location->set_end (new_end);
4031                                 } else  if (new_start < copy_location->end()) {
4032                                         copy_location->set_start (new_start);
4033                                 } else if (newframe > 0) {
4034                                         //_editor->snap_to (next, RoundUpAlways, true);
4035                                         copy_location->set_end (next);
4036                                         copy_location->set_start (newframe);
4037                                 }
4038
4039                         } else { // end marker
4040
4041                                 if (move_both || (*x).move_both) {
4042                                         copy_location->set_end (new_end);
4043                                         copy_location->set_start (new_start);
4044                                 } else if (new_end > copy_location->start()) {
4045                                         copy_location->set_end (new_end);
4046                                 } else if (newframe > 0) {
4047                                         //_editor->snap_to (next, RoundDownAlways, true);
4048                                         copy_location->set_start (next);
4049                                         copy_location->set_end (newframe);
4050                                 }
4051                         }
4052                 }
4053
4054                 update_item (copy_location);
4055
4056                 /* now lookup the actual GUI items used to display this
4057                  * location and move them to wherever the copy of the location
4058                  * is now. This means that the logic in ARDOUR::Location is
4059                  * still enforced, even though we are not (yet) modifying
4060                  * the real Location itself.
4061                  */
4062
4063                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4064
4065                 if (lm) {
4066                         lm->set_position (copy_location->start(), copy_location->end());
4067                 }
4068
4069         }
4070
4071         assert (!_copied_locations.empty());
4072
4073         show_verbose_cursor_time (newframe);
4074 }
4075
4076 void
4077 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4078 {
4079         if (!movement_occurred) {
4080
4081                 if (was_double_click()) {
4082                         _editor->rename_marker (_marker);
4083                         return;
4084                 }
4085
4086                 /* just a click, do nothing but finish
4087                    off the selection process
4088                 */
4089
4090                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4091                 switch (op) {
4092                 case Selection::Set:
4093                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4094                                 _editor->selection->set (_marker);
4095                                 _selection_changed = true;
4096                         }
4097                         break;
4098
4099                 case Selection::Toggle:
4100                         /* we toggle on the button release, click only */
4101                         _editor->selection->toggle (_marker);
4102                         _selection_changed = true;
4103
4104                         break;
4105
4106                 case Selection::Extend:
4107                 case Selection::Add:
4108                         break;
4109                 }
4110
4111                 if (_selection_changed) {
4112                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4113                         _editor->commit_reversible_selection_op();
4114                 }
4115
4116                 return;
4117         }
4118
4119         _editor->_dragging_edit_point = false;
4120
4121         XMLNode &before = _editor->session()->locations()->get_state();
4122         bool in_command = false;
4123
4124         MarkerSelection::iterator i;
4125         CopiedLocationInfo::iterator x;
4126         bool is_start;
4127
4128         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4129              x != _copied_locations.end() && i != _editor->selection->markers.end();
4130              ++i, ++x) {
4131
4132                 Location * location = _editor->find_location_from_marker (*i, is_start);
4133
4134                 if (location) {
4135
4136                         if (location->locked()) {
4137                                 continue;
4138                         }
4139                         if (!in_command) {
4140                                 _editor->begin_reversible_command ( _("move marker") );
4141                                 in_command = true;
4142                         }
4143                         if (location->is_mark()) {
4144                                 location->set_start (((*x).location)->start());
4145                         } else {
4146                                 location->set (((*x).location)->start(), ((*x).location)->end());
4147                         }
4148                 }
4149         }
4150
4151         if (in_command) {
4152                 XMLNode &after = _editor->session()->locations()->get_state();
4153                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4154                 _editor->commit_reversible_command ();
4155         }
4156 }
4157
4158 void
4159 MarkerDrag::aborted (bool movement_occurred)
4160 {
4161         if (!movement_occurred) {
4162                 return;
4163         }
4164
4165         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4166
4167                 /* move all markers to their original location */
4168
4169
4170                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4171
4172                         bool is_start;
4173                         Location * location = _editor->find_location_from_marker (*m, is_start);
4174
4175                         if (location) {
4176                                 (*m)->set_position (is_start ? location->start() : location->end());
4177                         }
4178                 }
4179         }
4180 }
4181
4182 void
4183 MarkerDrag::update_item (Location*)
4184 {
4185         /* noop */
4186 }
4187
4188 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4189         : Drag (e, i)
4190         , _fixed_grab_x (0.0)
4191         , _fixed_grab_y (0.0)
4192         , _cumulative_x_drag (0.0)
4193         , _cumulative_y_drag (0.0)
4194         , _pushing (false)
4195         , _final_index (0)
4196 {
4197         if (_zero_gain_fraction < 0.0) {
4198                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4199         }
4200
4201         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4202
4203         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4204         assert (_point);
4205 }
4206
4207
4208 void
4209 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4210 {
4211         Drag::start_grab (event, _editor->cursors()->fader);
4212
4213         // start the grab at the center of the control point so
4214         // the point doesn't 'jump' to the mouse after the first drag
4215         _fixed_grab_x = _point->get_x();
4216         _fixed_grab_y = _point->get_y();
4217
4218         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4219         setup_snap_delta (pos);
4220
4221         float const fraction = 1 - (_point->get_y() / _point->line().height());
4222         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4223
4224         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4225
4226         if (!_point->can_slide ()) {
4227                 _x_constrained = true;
4228         }
4229 }
4230
4231 void
4232 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4233 {
4234         double dx = _drags->current_pointer_x() - last_pointer_x();
4235         double dy = current_pointer_y() - last_pointer_y();
4236         bool need_snap = true;
4237
4238         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4239                 dx *= 0.1;
4240                 dy *= 0.1;
4241                 need_snap = false;
4242         }
4243
4244         /* coordinate in pixels relative to the start of the region (for region-based automation)
4245            or track (for track-based automation) */
4246         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4247         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4248
4249         // calculate zero crossing point. back off by .01 to stay on the
4250         // positive side of zero
4251         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4252
4253         if (_x_constrained) {
4254                 cx = _fixed_grab_x;
4255         }
4256         if (_y_constrained) {
4257                 cy = _fixed_grab_y;
4258         }
4259
4260         _cumulative_x_drag = cx - _fixed_grab_x;
4261         _cumulative_y_drag = cy - _fixed_grab_y;
4262
4263         cx = max (0.0, cx);
4264         cy = max (0.0, cy);
4265         cy = min ((double) _point->line().height(), cy);
4266
4267         // make sure we hit zero when passing through
4268         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4269                 cy = zero_gain_y;
4270         }
4271
4272         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4273
4274         if (!_x_constrained && need_snap) {
4275                 _editor->snap_to_with_modifier (cx_frames, event);
4276         }
4277
4278         cx_frames -= snap_delta (event->button.state);
4279         cx_frames = min (cx_frames, _point->line().maximum_time());
4280
4281         float const fraction = 1.0 - (cy / _point->line().height());
4282
4283         if (first_motion) {
4284                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4285                 _editor->begin_reversible_command (_("automation event move"));
4286                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4287         }
4288         pair<double, float> result;
4289         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4290
4291         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4292 }
4293
4294 void
4295 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4296 {
4297         if (!movement_occurred) {
4298
4299                 /* just a click */
4300                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4301                         _editor->reset_point_selection ();
4302                 }
4303
4304         } else {
4305                 _point->line().end_drag (_pushing, _final_index);
4306                 _editor->commit_reversible_command ();
4307         }
4308 }
4309
4310 void
4311 ControlPointDrag::aborted (bool)
4312 {
4313         _point->line().reset ();
4314 }
4315
4316 bool
4317 ControlPointDrag::active (Editing::MouseMode m)
4318 {
4319         if (m == Editing::MouseDraw) {
4320                 /* always active in mouse draw */
4321                 return true;
4322         }
4323
4324         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4325         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4326 }
4327
4328 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4329         : Drag (e, i)
4330         , _line (0)
4331         , _fixed_grab_x (0.0)
4332         , _fixed_grab_y (0.0)
4333         , _cumulative_y_drag (0)
4334         , _before (0)
4335         , _after (0)
4336 {
4337         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4338 }
4339
4340 void
4341 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4342 {
4343         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4344         assert (_line);
4345
4346         _item = &_line->grab_item ();
4347
4348         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4349            origin, and ditto for y.
4350         */
4351
4352         double mx = event->button.x;
4353         double my = event->button.y;
4354
4355         _line->grab_item().canvas_to_item (mx, my);
4356
4357         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4358
4359         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4360                 /* no adjacent points */
4361                 return;
4362         }
4363
4364         Drag::start_grab (event, _editor->cursors()->fader);
4365
4366         /* store grab start in item frame */
4367         double const bx = _line->nth (_before)->get_x();
4368         double const ax = _line->nth (_after)->get_x();
4369         double const click_ratio = (ax - mx) / (ax - bx);
4370
4371         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4372
4373         _fixed_grab_x = mx;
4374         _fixed_grab_y = cy;
4375
4376         double fraction = 1.0 - (cy / _line->height());
4377
4378         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4379 }
4380
4381 void
4382 LineDrag::motion (GdkEvent* event, bool first_move)
4383 {
4384         double dy = current_pointer_y() - last_pointer_y();
4385
4386         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4387                 dy *= 0.1;
4388         }
4389
4390         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4391
4392         _cumulative_y_drag = cy - _fixed_grab_y;
4393
4394         cy = max (0.0, cy);
4395         cy = min ((double) _line->height(), cy);
4396
4397         double const fraction = 1.0 - (cy / _line->height());
4398         uint32_t ignored;
4399
4400         if (first_move) {
4401                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4402
4403                 _editor->begin_reversible_command (_("automation range move"));
4404                 _line->start_drag_line (_before, _after, initial_fraction);
4405         }
4406
4407         /* we are ignoring x position for this drag, so we can just pass in anything */
4408         pair<double, float> result;
4409
4410         result = _line->drag_motion (0, fraction, true, false, ignored);
4411         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4412 }
4413
4414 void
4415 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4416 {
4417         if (movement_occurred) {
4418                 motion (event, false);
4419                 _line->end_drag (false, 0);
4420                 _editor->commit_reversible_command ();
4421         } else {
4422                 /* add a new control point on the line */
4423
4424                 AutomationTimeAxisView* atv;
4425
4426                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4427                         framepos_t where = grab_frame ();
4428
4429                         double cx = 0;
4430                         double cy = _fixed_grab_y;
4431
4432                         _line->grab_item().item_to_canvas (cx, cy);
4433
4434                         atv->add_automation_event (event, where, cy, false);
4435                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4436                         AudioRegionView* arv;
4437
4438                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4439                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4440                         }
4441                 }
4442         }
4443 }
4444
4445 void
4446 LineDrag::aborted (bool)
4447 {
4448         _line->reset ();
4449 }
4450
4451 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4452         : Drag (e, i),
4453           _line (0),
4454           _arv (0),
4455           _region_view_grab_x (0.0),
4456           _cumulative_x_drag (0),
4457           _before (0.0),
4458           _max_x (0)
4459 {
4460         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4461 }
4462
4463 void
4464 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4465 {
4466         Drag::start_grab (event);
4467
4468         _line = reinterpret_cast<Line*> (_item);
4469         assert (_line);
4470
4471         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4472
4473         double cx = event->button.x;
4474         double cy = event->button.y;
4475
4476         _item->parent()->canvas_to_item (cx, cy);
4477
4478         /* store grab start in parent frame */
4479         _region_view_grab_x = cx;
4480
4481         _before = *(float*) _item->get_data ("position");
4482
4483         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4484
4485         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4486 }
4487
4488 void
4489 FeatureLineDrag::motion (GdkEvent*, bool)
4490 {
4491         double dx = _drags->current_pointer_x() - last_pointer_x();
4492
4493         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4494
4495         _cumulative_x_drag += dx;
4496
4497         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4498
4499         if (cx > _max_x){
4500                 cx = _max_x;
4501         }
4502         else if(cx < 0){
4503                 cx = 0;
4504         }
4505
4506         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4507         assert (bbox);
4508         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4509
4510         float *pos = new float;
4511         *pos = cx;
4512
4513         _line->set_data ("position", pos);
4514
4515         _before = cx;
4516 }
4517
4518 void
4519 FeatureLineDrag::finished (GdkEvent*, bool)
4520 {
4521         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4522         _arv->update_transient(_before, _before);
4523 }
4524
4525 void
4526 FeatureLineDrag::aborted (bool)
4527 {
4528         //_line->reset ();
4529 }
4530
4531 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4532         : Drag (e, i)
4533         , _vertical_only (false)
4534 {
4535         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4536 }
4537
4538 void
4539 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4540 {
4541         Drag::start_grab (event);
4542         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4543 }
4544
4545 void
4546 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4547 {
4548         framepos_t start;
4549         framepos_t end;
4550         double y1;
4551         double y2;
4552
4553         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4554
4555         framepos_t grab = grab_frame ();
4556         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4557                 _editor->snap_to_with_modifier (grab, event);
4558         } else {
4559                 grab = raw_grab_frame ();
4560         }
4561
4562         /* base start and end on initial click position */
4563
4564         if (pf < grab) {
4565                 start = pf;
4566                 end = grab;
4567         } else {
4568                 end = pf;
4569                 start = grab;
4570         }
4571
4572         if (current_pointer_y() < grab_y()) {
4573                 y1 = current_pointer_y();
4574                 y2 = grab_y();
4575         } else {
4576                 y2 = current_pointer_y();
4577                 y1 = grab_y();
4578         }
4579
4580         if (start != end || y1 != y2) {
4581
4582                 double x1 = _editor->sample_to_pixel (start);
4583                 double x2 = _editor->sample_to_pixel (end);
4584                 const double min_dimension = 2.0;
4585
4586                 if (_vertical_only) {
4587                         /* fixed 10 pixel width */
4588                         x2 = x1 + 10;
4589                 } else {
4590                         if (x2 < x1) {
4591                                 x2 = min (x1 - min_dimension, x2);
4592                         } else {
4593                                 x2 = max (x1 + min_dimension, x2);
4594                         }
4595                 }
4596
4597                 if (y2 < y1) {
4598                         y2 = min (y1 - min_dimension, y2);
4599                 } else {
4600                         y2 = max (y1 + min_dimension, y2);
4601                 }
4602
4603                 /* translate rect into item space and set */
4604
4605                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4606
4607                 /* this drag is a _trackview_only == true drag, so the y1 and
4608                  * y2 (computed using current_pointer_y() and grab_y()) will be
4609                  * relative to the top of the trackview group). The
4610                  * rubberband rect has the same parent/scroll offset as the
4611                  * the trackview group, so we can use the "r" rect directly
4612                  * to set the shape of the rubberband.
4613                  */
4614
4615                 _editor->rubberband_rect->set (r);
4616                 _editor->rubberband_rect->show();
4617                 _editor->rubberband_rect->raise_to_top();
4618
4619                 show_verbose_cursor_time (pf);
4620
4621                 do_select_things (event, true);
4622         }
4623 }
4624
4625 void
4626 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4627 {
4628         framepos_t x1;
4629         framepos_t x2;
4630         framepos_t grab = grab_frame ();
4631         framepos_t lpf = last_pointer_frame ();
4632
4633         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4634                 grab = raw_grab_frame ();
4635                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4636         }
4637
4638         if (grab < lpf) {
4639                 x1 = grab;
4640                 x2 = lpf;
4641         } else {
4642                 x2 = grab;
4643                 x1 = lpf;
4644         }
4645
4646         double y1;
4647         double y2;
4648
4649         if (current_pointer_y() < grab_y()) {
4650                 y1 = current_pointer_y();
4651                 y2 = grab_y();
4652         } else {
4653                 y2 = current_pointer_y();
4654                 y1 = grab_y();
4655         }
4656
4657         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4658 }
4659
4660 void
4661 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4662 {
4663         if (movement_occurred) {
4664
4665                 motion (event, false);
4666                 do_select_things (event, false);
4667
4668         } else {
4669
4670                 /* just a click */
4671
4672                 bool do_deselect = true;
4673                 MidiTimeAxisView* mtv;
4674
4675                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4676                         /* MIDI track */
4677                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4678                                 /* nothing selected */
4679                                 add_midi_region (mtv, true);
4680                                 do_deselect = false;
4681                         }
4682                 }
4683
4684                 /* do not deselect if Primary or Tertiary (toggle-select or
4685                  * extend-select are pressed.
4686                  */
4687
4688                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4689                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4690                     do_deselect) {
4691                         deselect_things ();
4692                 }
4693
4694         }
4695
4696         _editor->rubberband_rect->hide();
4697 }
4698
4699 void
4700 RubberbandSelectDrag::aborted (bool)
4701 {
4702         _editor->rubberband_rect->hide ();
4703 }
4704
4705 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4706         : RegionDrag (e, i, p, v)
4707 {
4708         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4709 }
4710
4711 void
4712 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4713 {
4714         Drag::start_grab (event, cursor);
4715
4716         _editor->get_selection().add (_primary);
4717
4718         framepos_t where = _primary->region()->position();
4719         setup_snap_delta (where);
4720
4721         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4722 }
4723
4724 void
4725 TimeFXDrag::motion (GdkEvent* event, bool)
4726 {
4727         RegionView* rv = _primary;
4728         StreamView* cv = rv->get_time_axis_view().view ();
4729
4730         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4731         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4732         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4733         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4734         _editor->snap_to_with_modifier (pf, event);
4735         pf -= snap_delta (event->button.state);
4736
4737         if (pf > rv->region()->position()) {
4738                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4739         }
4740
4741         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4742 }
4743
4744 void
4745 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4746 {
4747         /* this may have been a single click, no drag. We still want the dialog
4748            to show up in that case, so that the user can manually edit the
4749            parameters for the timestretch.
4750         */
4751
4752         float fraction = 1.0;
4753
4754         if (movement_occurred) {
4755
4756                 motion (event, false);
4757
4758                 _primary->get_time_axis_view().hide_timestretch ();
4759
4760                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4761
4762                 if (adjusted_frame_pos < _primary->region()->position()) {
4763                         /* backwards drag of the left edge - not usable */
4764                         return;
4765                 }
4766
4767                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4768
4769                 fraction = (double) newlen / (double) _primary->region()->length();
4770
4771 #ifndef USE_RUBBERBAND
4772                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4773                 if (_primary->region()->data_type() == DataType::AUDIO) {
4774                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4775                 }
4776 #endif
4777         }
4778
4779         if (!_editor->get_selection().regions.empty()) {
4780                 /* primary will already be included in the selection, and edit
4781                    group shared editing will propagate selection across
4782                    equivalent regions, so just use the current region
4783                    selection.
4784                 */
4785
4786                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4787                         error << _("An error occurred while executing time stretch operation") << endmsg;
4788                 }
4789         }
4790 }
4791
4792 void
4793 TimeFXDrag::aborted (bool)
4794 {
4795         _primary->get_time_axis_view().hide_timestretch ();
4796 }
4797
4798 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4799         : Drag (e, i)
4800 {
4801         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4802 }
4803
4804 void
4805 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4806 {
4807         Drag::start_grab (event);
4808 }
4809
4810 void
4811 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4812 {
4813         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4814 }
4815
4816 void
4817 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4818 {
4819         if (movement_occurred && _editor->session()) {
4820                 /* make sure we stop */
4821                 _editor->session()->request_transport_speed (0.0);
4822         }
4823 }
4824
4825 void
4826 ScrubDrag::aborted (bool)
4827 {
4828         /* XXX: TODO */
4829 }
4830
4831 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4832         : Drag (e, i)
4833         , _operation (o)
4834         , _add (false)
4835         , _time_selection_at_start (!_editor->get_selection().time.empty())
4836 {
4837         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4838
4839         if (_time_selection_at_start) {
4840                 start_at_start = _editor->get_selection().time.start();
4841                 end_at_start = _editor->get_selection().time.end_frame();
4842         }
4843 }
4844
4845 void
4846 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4847 {
4848         if (_editor->session() == 0) {
4849                 return;
4850         }
4851
4852         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4853
4854         switch (_operation) {
4855         case CreateSelection:
4856                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4857                         _add = true;
4858                 } else {
4859                         _add = false;
4860                 }
4861                 cursor = _editor->cursors()->selector;
4862                 Drag::start_grab (event, cursor);
4863                 break;
4864
4865         case SelectionStartTrim:
4866                 if (_editor->clicked_axisview) {
4867                         _editor->clicked_axisview->order_selection_trims (_item, true);
4868                 }
4869                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4870                 break;
4871
4872         case SelectionEndTrim:
4873                 if (_editor->clicked_axisview) {
4874                         _editor->clicked_axisview->order_selection_trims (_item, false);
4875                 }
4876                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4877                 break;
4878
4879         case SelectionMove:
4880                 Drag::start_grab (event, cursor);
4881                 break;
4882
4883         case SelectionExtend:
4884                 Drag::start_grab (event, cursor);
4885                 break;
4886         }
4887
4888         if (_operation == SelectionMove) {
4889                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4890         } else {
4891                 show_verbose_cursor_time (adjusted_current_frame (event));
4892         }
4893 }
4894
4895 void
4896 SelectionDrag::setup_pointer_frame_offset ()
4897 {
4898         switch (_operation) {
4899         case CreateSelection:
4900                 _pointer_frame_offset = 0;
4901                 break;
4902
4903         case SelectionStartTrim:
4904         case SelectionMove:
4905                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4906                 break;
4907
4908         case SelectionEndTrim:
4909                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4910                 break;
4911
4912         case SelectionExtend:
4913                 break;
4914         }
4915 }
4916
4917 void
4918 SelectionDrag::motion (GdkEvent* event, bool first_move)
4919 {
4920         framepos_t start = 0;
4921         framepos_t end = 0;
4922         framecnt_t length = 0;
4923         framecnt_t distance = 0;
4924
4925         framepos_t const pending_position = adjusted_current_frame (event);
4926
4927         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4928                 return;
4929         }
4930
4931         switch (_operation) {
4932         case CreateSelection:
4933         {
4934                 framepos_t grab = grab_frame ();
4935
4936                 if (first_move) {
4937                         grab = adjusted_current_frame (event, false);
4938                         if (grab < pending_position) {
4939                                 _editor->snap_to (grab, RoundDownMaybe);
4940                         }  else {
4941                                 _editor->snap_to (grab, RoundUpMaybe);
4942                         }
4943                 }
4944
4945                 if (pending_position < grab) {
4946                         start = pending_position;
4947                         end = grab;
4948                 } else {
4949                         end = pending_position;
4950                         start = grab;
4951                 }
4952
4953                 /* first drag: Either add to the selection
4954                    or create a new selection
4955                 */
4956
4957                 if (first_move) {
4958
4959                         if (_add) {
4960
4961                                 /* adding to the selection */
4962                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4963                                 _editor->clicked_selection = _editor->selection->add (start, end);
4964                                 _add = false;
4965
4966                         } else {
4967
4968                                 /* new selection */
4969
4970                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4971                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4972                                 }
4973
4974                                 _editor->clicked_selection = _editor->selection->set (start, end);
4975                         }
4976                 }
4977
4978                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4979                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4980                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4981                 if (atest) {
4982                         _editor->selection->add (atest);
4983                         break;
4984                 }
4985
4986                 /* select all tracks within the rectangle that we've marked out so far */
4987                 TrackViewList new_selection;
4988                 TrackViewList& all_tracks (_editor->track_views);
4989
4990                 ArdourCanvas::Coord const top = grab_y();
4991                 ArdourCanvas::Coord const bottom = current_pointer_y();
4992
4993                 if (top >= 0 && bottom >= 0) {
4994
4995                         //first, find the tracks that are covered in the y range selection
4996                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4997                                 if ((*i)->covered_by_y_range (top, bottom)) {
4998                                         new_selection.push_back (*i);
4999                                 }
5000                         }
5001
5002                         //now find any tracks that are GROUPED with the tracks we selected
5003                         TrackViewList grouped_add = new_selection;
5004                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5005                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5006                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5007                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5008                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5009                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5010                                                         grouped_add.push_back (*j);
5011                                         }
5012                                 }
5013                         }
5014
5015                         //now compare our list with the current selection, and add or remove as necessary
5016                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5017                         TrackViewList tracks_to_add;
5018                         TrackViewList tracks_to_remove;
5019                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5020                                 if ( !_editor->selection->tracks.contains ( *i ) )
5021                                         tracks_to_add.push_back ( *i );
5022                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5023                                 if ( !grouped_add.contains ( *i ) )
5024                                         tracks_to_remove.push_back ( *i );
5025                         _editor->selection->add(tracks_to_add);
5026                         _editor->selection->remove(tracks_to_remove);
5027
5028                 }
5029         }
5030         break;
5031
5032         case SelectionStartTrim:
5033
5034                 end = _editor->selection->time[_editor->clicked_selection].end;
5035
5036                 if (pending_position > end) {
5037                         start = end;
5038                 } else {
5039                         start = pending_position;
5040                 }
5041                 break;
5042
5043         case SelectionEndTrim:
5044
5045                 start = _editor->selection->time[_editor->clicked_selection].start;
5046
5047                 if (pending_position < start) {
5048                         end = start;
5049                 } else {
5050                         end = pending_position;
5051                 }
5052
5053                 break;
5054
5055         case SelectionMove:
5056
5057                 start = _editor->selection->time[_editor->clicked_selection].start;
5058                 end = _editor->selection->time[_editor->clicked_selection].end;
5059
5060                 length = end - start;
5061                 distance = pending_position - start;
5062                 start = pending_position;
5063                 _editor->snap_to (start);
5064
5065                 end = start + length;
5066
5067                 break;
5068
5069         case SelectionExtend:
5070                 break;
5071         }
5072
5073         if (start != end) {
5074                 switch (_operation) {
5075                 case SelectionMove:
5076                         if (_time_selection_at_start) {
5077                                 _editor->selection->move_time (distance);
5078                         }
5079                         break;
5080                 default:
5081                         _editor->selection->replace (_editor->clicked_selection, start, end);
5082                 }
5083         }
5084
5085         if (_operation == SelectionMove) {
5086                 show_verbose_cursor_time(start);
5087         } else {
5088                 show_verbose_cursor_time(pending_position);
5089         }
5090 }
5091
5092 void
5093 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5094 {
5095         Session* s = _editor->session();
5096
5097         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5098         if (movement_occurred) {
5099                 motion (event, false);
5100                 /* XXX this is not object-oriented programming at all. ick */
5101                 if (_editor->selection->time.consolidate()) {
5102                         _editor->selection->TimeChanged ();
5103                 }
5104
5105                 /* XXX what if its a music time selection? */
5106                 if (s) {
5107                         if (s->get_play_range() && s->transport_rolling()) {
5108                                 s->request_play_range (&_editor->selection->time, true);
5109                         } else if (!s->config.get_external_sync()) {
5110                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5111                                         if (_operation == SelectionEndTrim)
5112                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5113                                         else
5114                                                 s->request_locate (_editor->get_selection().time.start());
5115                                 }
5116                         }
5117
5118                         if (_editor->get_selection().time.length() != 0) {
5119                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5120                         } else {
5121                                 s->clear_range_selection ();
5122                         }
5123                 }
5124
5125         } else {
5126                 /* just a click, no pointer movement.
5127                  */
5128
5129                 if (_operation == SelectionExtend) {
5130                         if (_time_selection_at_start) {
5131                                 framepos_t pos = adjusted_current_frame (event, false);
5132                                 framepos_t start = min (pos, start_at_start);
5133                                 framepos_t end = max (pos, end_at_start);
5134                                 _editor->selection->set (start, end);
5135                         }
5136                 } else {
5137                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5138                                 if (_editor->clicked_selection) {
5139                                         _editor->selection->remove (_editor->clicked_selection);
5140                                 }
5141                         } else {
5142                                 if (!_editor->clicked_selection) {
5143                                         _editor->selection->clear_time();
5144                                 }
5145                         }
5146                 }
5147
5148                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5149                         _editor->selection->set (_editor->clicked_axisview);
5150                 }
5151
5152                 if (s && s->get_play_range () && s->transport_rolling()) {
5153                         s->request_stop (false, false);
5154                 }
5155
5156         }
5157
5158         _editor->stop_canvas_autoscroll ();
5159         _editor->clicked_selection = 0;
5160         _editor->commit_reversible_selection_op ();
5161 }
5162
5163 void
5164 SelectionDrag::aborted (bool)
5165 {
5166         /* XXX: TODO */
5167 }
5168
5169 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5170         : Drag (e, i, false),
5171           _operation (o),
5172           _copy (false)
5173 {
5174         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5175
5176         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5177                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5178                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5179         _drag_rect->hide ();
5180
5181         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5182         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5183 }
5184
5185 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5186 {
5187         /* normal canvas items will be cleaned up when their parent group is deleted. But
5188            this item is created as the child of a long-lived parent group, and so we
5189            need to explicitly delete it.
5190         */
5191         delete _drag_rect;
5192 }
5193
5194 void
5195 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5196 {
5197         if (_editor->session() == 0) {
5198                 return;
5199         }
5200
5201         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5202
5203         if (!_editor->temp_location) {
5204                 _editor->temp_location = new Location (*_editor->session());
5205         }
5206
5207         switch (_operation) {
5208         case CreateSkipMarker:
5209         case CreateRangeMarker:
5210         case CreateTransportMarker:
5211         case CreateCDMarker:
5212
5213                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5214                         _copy = true;
5215                 } else {
5216                         _copy = false;
5217                 }
5218                 cursor = _editor->cursors()->selector;
5219                 break;
5220         }
5221
5222         Drag::start_grab (event, cursor);
5223
5224         show_verbose_cursor_time (adjusted_current_frame (event));
5225 }
5226
5227 void
5228 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5229 {
5230         framepos_t start = 0;
5231         framepos_t end = 0;
5232         ArdourCanvas::Rectangle *crect;
5233
5234         switch (_operation) {
5235         case CreateSkipMarker:
5236                 crect = _editor->range_bar_drag_rect;
5237                 break;
5238         case CreateRangeMarker:
5239                 crect = _editor->range_bar_drag_rect;
5240                 break;
5241         case CreateTransportMarker:
5242                 crect = _editor->transport_bar_drag_rect;
5243                 break;
5244         case CreateCDMarker:
5245                 crect = _editor->cd_marker_bar_drag_rect;
5246                 break;
5247         default:
5248                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5249                 return;
5250                 break;
5251         }
5252
5253         framepos_t const pf = adjusted_current_frame (event);
5254
5255         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5256                 framepos_t grab = grab_frame ();
5257                 _editor->snap_to (grab);
5258
5259                 if (pf < grab_frame()) {
5260                         start = pf;
5261                         end = grab;
5262                 } else {
5263                         end = pf;
5264                         start = grab;
5265                 }
5266
5267                 /* first drag: Either add to the selection
5268                    or create a new selection.
5269                 */
5270
5271                 if (first_move) {
5272
5273                         _editor->temp_location->set (start, end);
5274
5275                         crect->show ();
5276
5277                         update_item (_editor->temp_location);
5278                         _drag_rect->show();
5279                         //_drag_rect->raise_to_top();
5280
5281                 }
5282         }
5283
5284         if (start != end) {
5285                 _editor->temp_location->set (start, end);
5286
5287                 double x1 = _editor->sample_to_pixel (start);
5288                 double x2 = _editor->sample_to_pixel (end);
5289                 crect->set_x0 (x1);
5290                 crect->set_x1 (x2);
5291
5292                 update_item (_editor->temp_location);
5293         }
5294
5295         show_verbose_cursor_time (pf);
5296
5297 }
5298
5299 void
5300 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5301 {
5302         Location * newloc = 0;
5303         string rangename;
5304         int flags;
5305
5306         if (movement_occurred) {
5307                 motion (event, false);
5308                 _drag_rect->hide();
5309
5310                 switch (_operation) {
5311                 case CreateSkipMarker:
5312                 case CreateRangeMarker:
5313                 case CreateCDMarker:
5314                     {
5315                         XMLNode &before = _editor->session()->locations()->get_state();
5316                         if (_operation == CreateSkipMarker) {
5317                                 _editor->begin_reversible_command (_("new skip marker"));
5318                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5319                                 flags = Location::IsRangeMarker | Location::IsSkip;
5320                                 _editor->range_bar_drag_rect->hide();
5321                         } else if (_operation == CreateCDMarker) {
5322                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5323                                 _editor->begin_reversible_command (_("new CD marker"));
5324                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5325                                 _editor->cd_marker_bar_drag_rect->hide();
5326                         } else {
5327                                 _editor->begin_reversible_command (_("new skip marker"));
5328                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5329                                 flags = Location::IsRangeMarker;
5330                                 _editor->range_bar_drag_rect->hide();
5331                         }
5332                         newloc = new Location (
5333                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5334                                 );
5335
5336                         _editor->session()->locations()->add (newloc, true);
5337                         XMLNode &after = _editor->session()->locations()->get_state();
5338                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5339                         _editor->commit_reversible_command ();
5340                         break;
5341                     }
5342
5343                 case CreateTransportMarker:
5344                         // popup menu to pick loop or punch
5345                         _editor->new_transport_marker_context_menu (&event->button, _item);
5346                         break;
5347                 }
5348
5349         } else {
5350
5351                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5352
5353                 if (_operation == CreateTransportMarker) {
5354
5355                         /* didn't drag, so just locate */
5356
5357                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5358
5359                 } else if (_operation == CreateCDMarker) {
5360
5361                         /* didn't drag, but mark is already created so do
5362                          * nothing */
5363
5364                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5365
5366                         framepos_t start;
5367                         framepos_t end;
5368
5369                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5370
5371                         if (end == max_framepos) {
5372                                 end = _editor->session()->current_end_frame ();
5373                         }
5374
5375                         if (start == max_framepos) {
5376                                 start = _editor->session()->current_start_frame ();
5377                         }
5378
5379                         switch (_editor->mouse_mode) {
5380                         case MouseObject:
5381                                 /* find the two markers on either side and then make the selection from it */
5382                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5383                                 break;
5384
5385                         case MouseRange:
5386                                 /* find the two markers on either side of the click and make the range out of it */
5387                                 _editor->selection->set (start, end);
5388                                 break;
5389
5390                         default:
5391                                 break;
5392                         }
5393                 }
5394         }
5395
5396         _editor->stop_canvas_autoscroll ();
5397 }
5398
5399 void
5400 RangeMarkerBarDrag::aborted (bool movement_occurred)
5401 {
5402         if (movement_occurred) {
5403                 _drag_rect->hide ();
5404         }
5405 }
5406
5407 void
5408 RangeMarkerBarDrag::update_item (Location* location)
5409 {
5410         double const x1 = _editor->sample_to_pixel (location->start());
5411         double const x2 = _editor->sample_to_pixel (location->end());
5412
5413         _drag_rect->set_x0 (x1);
5414         _drag_rect->set_x1 (x2);
5415 }
5416
5417 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5418         : Drag (e, i)
5419         , _cumulative_dx (0)
5420         , _cumulative_dy (0)
5421         , _was_selected (false)
5422 {
5423         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5424
5425         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5426         assert (_primary);
5427         _region = &_primary->region_view ();
5428         _note_height = _region->midi_stream_view()->note_height ();
5429 }
5430
5431 void
5432 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5433 {
5434         Drag::start_grab (event);
5435         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5436
5437         if (!(_was_selected = _primary->selected())) {
5438
5439                 /* tertiary-click means extend selection - we'll do that on button release,
5440                    so don't add it here, because otherwise we make it hard to figure
5441                    out the "extend-to" range.
5442                 */
5443
5444                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5445
5446                 if (!extend) {
5447                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5448
5449                         if (add) {
5450                                 _region->note_selected (_primary, true);
5451                         } else {
5452                                 _editor->get_selection().clear_points();
5453                                 _region->unique_select (_primary);
5454                         }
5455                 }
5456         }
5457 }
5458
5459 /** @return Current total drag x change in frames */
5460 frameoffset_t
5461 NoteDrag::total_dx (const guint state) const
5462 {
5463         /* dx in frames */
5464         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5465
5466         /* primary note time */
5467         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5468
5469         /* new time of the primary note in session frames */
5470         frameoffset_t st = n + dx + snap_delta (state);
5471
5472         framepos_t const rp = _region->region()->position ();
5473
5474         /* prevent the note being dragged earlier than the region's position */
5475         st = max (st, rp);
5476
5477         /* possibly snap and return corresponding delta */
5478
5479         bool snap = true;
5480
5481         if (ArdourKeyboard::indicates_snap (state)) {
5482                 if (_editor->snap_mode () != SnapOff) {
5483                         snap = false;
5484                 }
5485         } else {
5486                 if (_editor->snap_mode () == SnapOff) {
5487                         snap = false;
5488                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5489                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5490                                 snap = true;
5491                         }
5492                 }
5493         }
5494
5495         frameoffset_t ret;
5496         if (snap) {
5497                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5498                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5499         } else {
5500                 ret = st - n - snap_delta (state);
5501         }
5502         return ret;
5503 }
5504
5505 /** @return Current total drag y change in note number */
5506 int8_t
5507 NoteDrag::total_dy () const
5508 {
5509         MidiStreamView* msv = _region->midi_stream_view ();
5510         double const y = _region->midi_view()->y_position ();
5511         /* new current note */
5512         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5513         /* clamp */
5514         n = max (msv->lowest_note(), n);
5515         n = min (msv->highest_note(), n);
5516         /* and work out delta */
5517         return n - msv->y_to_note (grab_y() - y);
5518 }
5519
5520 void
5521 NoteDrag::motion (GdkEvent * event, bool)
5522 {
5523         /* Total change in x and y since the start of the drag */
5524         frameoffset_t const dx = total_dx (event->button.state);
5525         int8_t const dy = total_dy ();
5526
5527         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5528         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5529         double const tdy = -dy * _note_height - _cumulative_dy;
5530
5531         if (tdx || tdy) {
5532                 _cumulative_dx += tdx;
5533                 _cumulative_dy += tdy;
5534
5535                 int8_t note_delta = total_dy();
5536
5537                 _region->move_selection (tdx, tdy, note_delta);
5538
5539                 /* the new note value may be the same as the old one, but we
5540                  * don't know what that means because the selection may have
5541                  * involved more than one note and we might be doing something
5542                  * odd with them. so show the note value anyway, always.
5543                  */
5544
5545                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5546
5547                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5548         }
5549 }
5550
5551 void
5552 NoteDrag::finished (GdkEvent* ev, bool moved)
5553 {
5554         if (!moved) {
5555                 /* no motion - select note */
5556
5557                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5558                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5559
5560                         bool changed = false;
5561
5562                         if (_was_selected) {
5563                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5564                                 if (add) {
5565                                         _region->note_deselected (_primary);
5566                                         changed = true;
5567                                 } else {
5568                                         _editor->get_selection().clear_points();
5569                                         _region->unique_select (_primary);
5570                                         changed = true;
5571                                 }
5572                         } else {
5573                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5574                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5575
5576                                 if (!extend && !add && _region->selection_size() > 1) {
5577                                         _editor->get_selection().clear_points();
5578                                         _region->unique_select (_primary);
5579                                         changed = true;
5580                                 } else if (extend) {
5581                                         _region->note_selected (_primary, true, true);
5582                                         changed = true;
5583                                 } else {
5584                                         /* it was added during button press */
5585                                         changed = true;
5586
5587                                 }
5588                         }
5589
5590                         if (changed) {
5591                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5592                                 _editor->commit_reversible_selection_op();
5593                         }
5594                 }
5595         } else {
5596                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5597         }
5598 }
5599
5600 void
5601 NoteDrag::aborted (bool)
5602 {
5603         /* XXX: TODO */
5604 }
5605
5606 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5607 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5608         : Drag (editor, atv->base_item ())
5609         , _ranges (r)
5610         , _y_origin (atv->y_position())
5611         , _nothing_to_drag (false)
5612 {
5613         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5614         setup (atv->lines ());
5615 }
5616
5617 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5618 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5619         : Drag (editor, rv->get_canvas_group ())
5620         , _ranges (r)
5621         , _y_origin (rv->get_time_axis_view().y_position())
5622         , _nothing_to_drag (false)
5623         , _integral (false)
5624 {
5625         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5626
5627         list<boost::shared_ptr<AutomationLine> > lines;
5628
5629         AudioRegionView*      audio_view;
5630         AutomationRegionView* automation_view;
5631         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5632                 lines.push_back (audio_view->get_gain_line ());
5633         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5634                 lines.push_back (automation_view->line ());
5635                 _integral = true;
5636         } else {
5637                 error << _("Automation range drag created for invalid region type") << endmsg;
5638         }
5639
5640         setup (lines);
5641 }
5642
5643 /** @param lines AutomationLines to drag.
5644  *  @param offset Offset from the session start to the points in the AutomationLines.
5645  */
5646 void
5647 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5648 {
5649         /* find the lines that overlap the ranges being dragged */
5650         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5651         while (i != lines.end ()) {
5652                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5653                 ++j;
5654
5655                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5656
5657                 /* check this range against all the AudioRanges that we are using */
5658                 list<AudioRange>::const_iterator k = _ranges.begin ();
5659                 while (k != _ranges.end()) {
5660                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5661                                 break;
5662                         }
5663                         ++k;
5664                 }
5665
5666                 /* add it to our list if it overlaps at all */
5667                 if (k != _ranges.end()) {
5668                         Line n;
5669                         n.line = *i;
5670                         n.state = 0;
5671                         n.range = r;
5672                         _lines.push_back (n);
5673                 }
5674
5675                 i = j;
5676         }
5677
5678         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5679 }
5680
5681 double
5682 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5683 {
5684         return 1.0 - ((global_y - _y_origin) / line->height());
5685 }
5686
5687 double
5688 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5689 {
5690         const double v = list->eval(x);
5691         return _integral ? rint(v) : v;
5692 }
5693
5694 void
5695 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5696 {
5697         Drag::start_grab (event, cursor);
5698
5699         /* Get line states before we start changing things */
5700         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5701                 i->state = &i->line->get_state ();
5702                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5703         }
5704
5705         if (_ranges.empty()) {
5706
5707                 /* No selected time ranges: drag all points */
5708                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5709                         uint32_t const N = i->line->npoints ();
5710                         for (uint32_t j = 0; j < N; ++j) {
5711                                 i->points.push_back (i->line->nth (j));
5712                         }
5713                 }
5714
5715         }
5716
5717         if (_nothing_to_drag) {
5718                 return;
5719         }
5720 }
5721
5722 void
5723 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5724 {
5725         if (_nothing_to_drag && !first_move) {
5726                 return;
5727         }
5728
5729         if (first_move) {
5730                 _editor->begin_reversible_command (_("automation range move"));
5731
5732                 if (!_ranges.empty()) {
5733
5734                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5735
5736                                 framecnt_t const half = (i->start + i->end) / 2;
5737
5738                                 /* find the line that this audio range starts in */
5739                                 list<Line>::iterator j = _lines.begin();
5740                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5741                                         ++j;
5742                                 }
5743
5744                                 if (j != _lines.end()) {
5745                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5746
5747                                 /* j is the line that this audio range starts in; fade into it;
5748                                    64 samples length plucked out of thin air.
5749                                 */
5750
5751                                         framepos_t a = i->start + 64;
5752                                         if (a > half) {
5753                                                 a = half;
5754                                         }
5755
5756                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5757                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5758
5759                                         XMLNode &before = the_list->get_state();
5760                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5761                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5762
5763                                         if (add_p || add_q) {
5764                                                 _editor->session()->add_command (
5765                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5766                                         }
5767                                 }
5768
5769                                 /* same thing for the end */
5770
5771                                 j = _lines.begin();
5772                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5773                                         ++j;
5774                                 }
5775
5776                                 if (j != _lines.end()) {
5777                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5778
5779                                         /* j is the line that this audio range starts in; fade out of it;
5780                                            64 samples length plucked out of thin air.
5781                                         */
5782
5783                                         framepos_t b = i->end - 64;
5784                                         if (b < half) {
5785                                                 b = half;
5786                                         }
5787
5788                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5789                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5790
5791                                         XMLNode &before = the_list->get_state();
5792                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5793                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5794
5795                                         if (add_p || add_q) {
5796                                                 _editor->session()->add_command (
5797                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5798                                         }
5799                                 }
5800                         }
5801
5802                         _nothing_to_drag = true;
5803
5804                         /* Find all the points that should be dragged and put them in the relevant
5805                            points lists in the Line structs.
5806                         */
5807
5808                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5809
5810                                 uint32_t const N = i->line->npoints ();
5811                                 for (uint32_t j = 0; j < N; ++j) {
5812
5813                                         /* here's a control point on this line */
5814                                         ControlPoint* p = i->line->nth (j);
5815                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5816
5817                                         /* see if it's inside a range */
5818                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5819                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5820                                                 ++k;
5821                                         }
5822
5823                                         if (k != _ranges.end()) {
5824                                                 /* dragging this point */
5825                                                 _nothing_to_drag = false;
5826                                                 i->points.push_back (p);
5827                                         }
5828                                 }
5829                         }
5830                 }
5831
5832                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5833                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5834                 }
5835         }
5836
5837         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5838                 float const f = y_fraction (l->line, current_pointer_y());
5839                 /* we are ignoring x position for this drag, so we can just pass in anything */
5840                 pair<double, float> result;
5841                 uint32_t ignored;
5842                 result = l->line->drag_motion (0, f, true, false, ignored);
5843                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5844         }
5845 }
5846
5847 void
5848 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5849 {
5850         if (_nothing_to_drag || !motion_occurred) {
5851                 return;
5852         }
5853
5854         motion (event, false);
5855         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5856                 i->line->end_drag (false, 0);
5857         }
5858
5859         _editor->commit_reversible_command ();
5860 }
5861
5862 void
5863 AutomationRangeDrag::aborted (bool)
5864 {
5865         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5866                 i->line->reset ();
5867         }
5868 }
5869
5870 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5871         : view (v)
5872         , initial_time_axis_view (itav)
5873 {
5874         /* note that time_axis_view may be null if the regionview was created
5875          * as part of a copy operation.
5876          */
5877         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5878         layer = v->region()->layer ();
5879         initial_y = v->get_canvas_group()->position().y;
5880         initial_playlist = v->region()->playlist ();
5881         initial_position = v->region()->position ();
5882         initial_end = v->region()->position () + v->region()->length ();
5883 }
5884
5885 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5886         : Drag (e, i->canvas_item ())
5887         , _region_view (r)
5888         , _patch_change (i)
5889         , _cumulative_dx (0)
5890 {
5891         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5892                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5893                                                    grab_frame()));
5894 }
5895
5896 void
5897 PatchChangeDrag::motion (GdkEvent* ev, bool)
5898 {
5899         framepos_t f = adjusted_current_frame (ev);
5900         boost::shared_ptr<Region> r = _region_view->region ();
5901         f = max (f, r->position ());
5902         f = min (f, r->last_frame ());
5903
5904         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5905         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5906         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5907         _cumulative_dx = dxu;
5908 }
5909
5910 void
5911 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5912 {
5913         if (!movement_occurred) {
5914                 return;
5915         }
5916
5917         boost::shared_ptr<Region> r (_region_view->region ());
5918         framepos_t f = adjusted_current_frame (ev);
5919         f = max (f, r->position ());
5920         f = min (f, r->last_frame ());
5921
5922         _region_view->move_patch_change (
5923                 *_patch_change,
5924                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5925                 );
5926 }
5927
5928 void
5929 PatchChangeDrag::aborted (bool)
5930 {
5931         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5932 }
5933
5934 void
5935 PatchChangeDrag::setup_pointer_frame_offset ()
5936 {
5937         boost::shared_ptr<Region> region = _region_view->region ();
5938         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5939 }
5940
5941 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5942         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5943         , _region_view (rv)
5944 {
5945
5946 }
5947
5948 void
5949 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5950 {
5951         _region_view->update_drag_selection (
5952                 x1, x2, y1, y2,
5953                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5954 }
5955
5956 void
5957 MidiRubberbandSelectDrag::deselect_things ()
5958 {
5959         /* XXX */
5960 }
5961
5962 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5963         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5964         , _region_view (rv)
5965 {
5966         _vertical_only = true;
5967 }
5968
5969 void
5970 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5971 {
5972         double const y = _region_view->midi_view()->y_position ();
5973
5974         y1 = max (0.0, y1 - y);
5975         y2 = max (0.0, y2 - y);
5976
5977         _region_view->update_vertical_drag_selection (
5978                 y1,
5979                 y2,
5980                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5981                 );
5982 }
5983
5984 void
5985 MidiVerticalSelectDrag::deselect_things ()
5986 {
5987         /* XXX */
5988 }
5989
5990 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5991         : RubberbandSelectDrag (e, i)
5992 {
5993
5994 }
5995
5996 void
5997 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5998 {
5999         if (drag_in_progress) {
6000                 /* We just want to select things at the end of the drag, not during it */
6001                 return;
6002         }
6003
6004         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6005
6006         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6007
6008         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6009
6010         _editor->commit_reversible_selection_op ();
6011 }
6012
6013 void
6014 EditorRubberbandSelectDrag::deselect_things ()
6015 {
6016         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6017
6018         _editor->selection->clear_tracks();
6019         _editor->selection->clear_regions();
6020         _editor->selection->clear_points ();
6021         _editor->selection->clear_lines ();
6022         _editor->selection->clear_midi_notes ();
6023
6024         _editor->commit_reversible_selection_op();
6025 }
6026
6027 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6028         : Drag (e, i)
6029         , _region_view (rv)
6030         , _drag_rect (0)
6031 {
6032         _note[0] = _note[1] = 0;
6033 }
6034
6035 NoteCreateDrag::~NoteCreateDrag ()
6036 {
6037         delete _drag_rect;
6038 }
6039
6040 framecnt_t
6041 NoteCreateDrag::grid_frames (framepos_t t) const
6042 {
6043         bool success;
6044         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6045         if (!success) {
6046                 grid_beats = Evoral::Beats(1);
6047         }
6048
6049         return _region_view->region_beats_to_region_frames (grid_beats);
6050 }
6051
6052 void
6053 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6054 {
6055         Drag::start_grab (event, cursor);
6056
6057         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6058
6059         framepos_t pf = _drags->current_pointer_frame ();
6060         framecnt_t const g = grid_frames (pf);
6061
6062         /* Hack so that we always snap to the note that we are over, instead of snapping
6063            to the next one if we're more than halfway through the one we're over.
6064         */
6065         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6066                 pf -= g / 2;
6067         }
6068
6069         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6070         _note[1] = _note[0];
6071
6072         MidiStreamView* sv = _region_view->midi_stream_view ();
6073         double const x = _editor->sample_to_pixel (_note[0]);
6074         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6075
6076         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6077         _drag_rect->set_outline_all ();
6078         _drag_rect->set_outline_color (0xffffff99);
6079         _drag_rect->set_fill_color (0xffffff66);
6080 }
6081
6082 void
6083 NoteCreateDrag::motion (GdkEvent* event, bool)
6084 {
6085         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6086         double const x0 = _editor->sample_to_pixel (_note[0]);
6087         double const x1 = _editor->sample_to_pixel (_note[1]);
6088         _drag_rect->set_x0 (std::min(x0, x1));
6089         _drag_rect->set_x1 (std::max(x0, x1));
6090 }
6091
6092 void
6093 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6094 {
6095         if (!had_movement) {
6096                 return;
6097         }
6098
6099         framepos_t const start = min (_note[0], _note[1]);
6100         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6101
6102         framecnt_t const g = grid_frames (start);
6103         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6104
6105         if (_editor->snap_mode() == SnapNormal && length < g) {
6106                 length = g;
6107         }
6108
6109         Evoral::Beats length_beats = max (
6110                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6111
6112         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6113 }
6114
6115 double
6116 NoteCreateDrag::y_to_region (double y) const
6117 {
6118         double x = 0;
6119         _region_view->get_canvas_group()->canvas_to_item (x, y);
6120         return y;
6121 }
6122
6123 void
6124 NoteCreateDrag::aborted (bool)
6125 {
6126
6127 }
6128
6129 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6130         : Drag (e, i)
6131         , arv (rv)
6132         , start (start_yn)
6133 {
6134         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6135 }
6136
6137 void
6138 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6139 {
6140         Drag::start_grab (event, cursor);
6141 }
6142
6143 void
6144 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6145 {
6146         double distance;
6147         double new_length;
6148         framecnt_t len;
6149
6150         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6151
6152         if (start) {
6153                 distance = _drags->current_pointer_x() - grab_x();
6154                 len = ar->fade_in()->back()->when;
6155         } else {
6156                 distance = grab_x() - _drags->current_pointer_x();
6157                 len = ar->fade_out()->back()->when;
6158         }
6159
6160         /* how long should it be ? */
6161
6162         new_length = len + _editor->pixel_to_sample (distance);
6163
6164         /* now check with the region that this is legal */
6165
6166         new_length = ar->verify_xfade_bounds (new_length, start);
6167
6168         if (start) {
6169                 arv->reset_fade_in_shape_width (ar, new_length);
6170         } else {
6171                 arv->reset_fade_out_shape_width (ar, new_length);
6172         }
6173 }
6174
6175 void
6176 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6177 {
6178         double distance;
6179         double new_length;
6180         framecnt_t len;
6181
6182         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6183
6184         if (start) {
6185                 distance = _drags->current_pointer_x() - grab_x();
6186                 len = ar->fade_in()->back()->when;
6187         } else {
6188                 distance = grab_x() - _drags->current_pointer_x();
6189                 len = ar->fade_out()->back()->when;
6190         }
6191
6192         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6193
6194         _editor->begin_reversible_command ("xfade trim");
6195         ar->playlist()->clear_owned_changes ();
6196
6197         if (start) {
6198                 ar->set_fade_in_length (new_length);
6199         } else {
6200                 ar->set_fade_out_length (new_length);
6201         }
6202
6203         /* Adjusting the xfade may affect other regions in the playlist, so we need
6204            to get undo Commands from the whole playlist rather than just the
6205            region.
6206         */
6207
6208         vector<Command*> cmds;
6209         ar->playlist()->rdiff (cmds);
6210         _editor->session()->add_commands (cmds);
6211         _editor->commit_reversible_command ();
6212
6213 }
6214
6215 void
6216 CrossfadeEdgeDrag::aborted (bool)
6217 {
6218         if (start) {
6219                 // arv->redraw_start_xfade ();
6220         } else {
6221                 // arv->redraw_end_xfade ();
6222         }
6223 }
6224
6225 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6226         : Drag (e, item, true)
6227         , line (new EditorCursor (*e))
6228 {
6229         line->set_position (pos);
6230         line->show ();
6231 }
6232
6233 RegionCutDrag::~RegionCutDrag ()
6234 {
6235         delete line;
6236 }
6237
6238 void
6239 RegionCutDrag::motion (GdkEvent*, bool)
6240 {
6241         framepos_t where = _drags->current_pointer_frame();
6242         _editor->snap_to (where);
6243
6244         line->set_position (where);
6245 }
6246
6247 void
6248 RegionCutDrag::finished (GdkEvent*, bool)
6249 {
6250         _editor->get_track_canvas()->canvas()->re_enter();
6251
6252         framepos_t pos = _drags->current_pointer_frame();
6253
6254         line->hide ();
6255
6256         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6257
6258         if (rs.empty()) {
6259                 return;
6260         }
6261
6262         _editor->split_regions_at (pos, rs);
6263 }
6264
6265 void
6266 RegionCutDrag::aborted (bool)
6267 {
6268 }