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);
3188
3189         _marker->set_position (pf);
3190         _editor->session()->tempo_map().gui_move_meter (_real_section, _marker->meter(), pf);
3191
3192         show_verbose_cursor_time (pf);
3193 }
3194
3195 void
3196 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3197 {
3198         if (!movement_occurred) {
3199                 if (was_double_click()) {
3200                         _editor->edit_meter_marker (*_marker);
3201                 }
3202                 return;
3203         }
3204
3205         if (!_marker->meter().movable()) {
3206                 return;
3207         }
3208
3209         motion (event, false);
3210
3211         Timecode::BBT_Time when;
3212
3213         TempoMap& map (_editor->session()->tempo_map());
3214         map.bbt_time (_marker->position(), when);
3215
3216         if (_copy == true) {
3217                 _editor->begin_reversible_command (_("copy meter mark"));
3218                 XMLNode &before = map.get_state();
3219
3220                 if (_marker->meter().position_lock_style() == AudioTime) {
3221                         map.add_meter (_marker->meter(), _marker->position());
3222                 } else {
3223                         map.add_meter (_marker->meter(), map.bbt_to_beats (when), when);
3224                 }
3225
3226                 XMLNode &after = map.get_state();
3227                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
3228                 _editor->commit_reversible_command ();
3229
3230         } else {
3231                 /* we removed it before, so add it back now */
3232                 if (_marker->meter().position_lock_style() == AudioTime) {
3233                         map.add_meter (_marker->meter(), _marker->position());
3234                 } else {
3235                         map.add_meter (_marker->meter(), map.beat_at_frame (_marker->position()), when);
3236                 }
3237
3238                 XMLNode &after = map.get_state();
3239                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3240                 _editor->commit_reversible_command ();
3241         }
3242
3243         // delete the dummy marker we used for visual representation while moving.
3244         // a new visual marker will show up automatically.
3245         delete _marker;
3246 }
3247
3248 void
3249 MeterMarkerDrag::aborted (bool moved)
3250 {
3251         _marker->set_position (_marker->meter().frame ());
3252
3253         if (moved) {
3254                 TempoMap& map (_editor->session()->tempo_map());
3255                 /* we removed it before, so add it back now */
3256                 map.add_meter (_marker->meter(), map.beat_at_frame (_marker->meter().frame()), _marker->meter().bbt());
3257                 // delete the dummy marker we used for visual representation while moving.
3258                 // a new visual marker will show up automatically.
3259                 delete _marker;
3260         }
3261 }
3262
3263 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3264         : Drag (e, i)
3265         , _copy (c)
3266         , before_state (0)
3267 {
3268         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3269
3270         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3271         _real_section = &_marker->tempo();
3272         assert (_marker);
3273 }
3274
3275 void
3276 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3277 {
3278         Drag::start_grab (event, cursor);
3279         show_verbose_cursor_time (adjusted_current_frame (event));
3280 }
3281
3282 void
3283 TempoMarkerDrag::setup_pointer_frame_offset ()
3284 {
3285         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3286 }
3287
3288 void
3289 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3290 {
3291         if (!_marker->tempo().movable()) {
3292                 return;
3293         }
3294
3295         if (first_move) {
3296
3297                 // create a dummy marker for visual representation of moving the
3298                 // section, because whether its a copy or not, we're going to
3299                 // leave or lose the original marker (leave if its a copy; lose if its
3300                 // not, because we'll remove it from the map).
3301
3302                 // create a dummy marker for visual representation of moving the copy.
3303                 // The actual copying is not done before we reach the finish callback.
3304
3305                 char name[64];
3306                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3307
3308                 TempoSection section (_marker->tempo());
3309
3310                 _marker = new TempoMarker (
3311                         *_editor,
3312                         *_editor->tempo_group,
3313                         UIConfiguration::instance().color ("tempo marker"),
3314                         name,
3315                         *new TempoSection (_marker->tempo())
3316                         );
3317
3318                 /* use the new marker for the grab */
3319                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3320
3321                 if (!_copy) {
3322                         _editor->begin_reversible_command (_("move tempo mark"));
3323                         TempoMap& map (_editor->session()->tempo_map());
3324                         /* get current state */
3325                         before_state = &map.get_state();
3326                 }
3327                 _marker->hide();
3328         }
3329
3330         framepos_t const pf = adjusted_current_frame (event, false);
3331         Tempo const tp = _marker->tempo();
3332         _marker->set_position (pf);
3333         _editor->session()->tempo_map().gui_move_tempo (_real_section, tp, pf);
3334
3335         show_verbose_cursor_time (pf);
3336 }
3337
3338 void
3339 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3340 {
3341         if (!movement_occurred) {
3342                 if (was_double_click()) {
3343                         _editor->edit_tempo_marker (*_marker);
3344                 }
3345                 return;
3346         }
3347
3348         if (!_marker->tempo().movable()) {
3349                 return;
3350         }
3351
3352         //motion (event, false);
3353
3354         TempoMap& map (_editor->session()->tempo_map());
3355
3356         if (_copy == true) {
3357                 _editor->begin_reversible_command (_("copy tempo mark"));
3358                 XMLNode &before = map.get_state();
3359
3360                 if (_marker->tempo().position_lock_style() == MusicTime) {
3361                         map.add_tempo (_marker->tempo(), _real_section->beat(), _marker->tempo().type());
3362                 } else {
3363                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3364                 }
3365
3366                 XMLNode &after = map.get_state();
3367                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3368                 _editor->commit_reversible_command ();
3369
3370         } else {
3371                 /* we removed it before, so add it back now */
3372                 if (_marker->tempo().position_lock_style() == MusicTime) {
3373                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->beat(), _marker->tempo().type());
3374                 } else {
3375                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->frame(), _marker->tempo().type());
3376                 }
3377
3378                 XMLNode &after = map.get_state();
3379                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3380                 _editor->commit_reversible_command ();
3381         }
3382
3383         // delete the dummy marker we used for visual representation while moving.
3384         // a new visual marker will show up automatically.
3385         delete _marker;
3386 }
3387
3388 void
3389 TempoMarkerDrag::aborted (bool moved)
3390 {
3391         _marker->set_position (_marker->tempo().frame());
3392         if (moved) {
3393                 TempoMap& map (_editor->session()->tempo_map());
3394                 /* we removed it before, so add it back now */
3395                 if (_marker->tempo().position_lock_style() == MusicTime) {
3396                         map.add_tempo (_marker->tempo(), _marker->tempo().beat(), _marker->tempo().type());
3397                 } else {
3398                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3399                 }
3400                 // delete the dummy marker we used for visual representation while moving.
3401                 // a new visual marker will show up automatically.
3402                 delete _marker;
3403         }
3404 }
3405
3406 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3407         : Drag (e, &c.track_canvas_item(), false)
3408         , _cursor (c)
3409         , _stop (s)
3410         , _grab_zoom (0.0)
3411 {
3412         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3413 }
3414
3415 /** Do all the things we do when dragging the playhead to make it look as though
3416  *  we have located, without actually doing the locate (because that would cause
3417  *  the diskstream buffers to be refilled, which is too slow).
3418  */
3419 void
3420 CursorDrag::fake_locate (framepos_t t)
3421 {
3422         if (_editor->session () == 0) {
3423                 return;
3424         }
3425
3426         _editor->playhead_cursor->set_position (t);
3427
3428         Session* s = _editor->session ();
3429         if (s->timecode_transmission_suspended ()) {
3430                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3431                 /* This is asynchronous so it will be sent "now"
3432                  */
3433                 s->send_mmc_locate (f);
3434                 /* These are synchronous and will be sent during the next
3435                    process cycle
3436                 */
3437                 s->queue_full_time_code ();
3438                 s->queue_song_position_pointer ();
3439         }
3440
3441         show_verbose_cursor_time (t);
3442         _editor->UpdateAllTransportClocks (t);
3443 }
3444
3445 void
3446 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3447 {
3448         Drag::start_grab (event, c);
3449         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3450
3451         _grab_zoom = _editor->samples_per_pixel;
3452
3453         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3454
3455         _editor->snap_to_with_modifier (where, event);
3456
3457         _editor->_dragging_playhead = true;
3458
3459         Session* s = _editor->session ();
3460
3461         /* grab the track canvas item as well */
3462
3463         _cursor.track_canvas_item().grab();
3464
3465         if (s) {
3466                 if (_was_rolling && _stop) {
3467                         s->request_stop ();
3468                 }
3469
3470                 if (s->is_auditioning()) {
3471                         s->cancel_audition ();
3472                 }
3473
3474
3475                 if (AudioEngine::instance()->connected()) {
3476
3477                         /* do this only if we're the engine is connected
3478                          * because otherwise this request will never be
3479                          * serviced and we'll busy wait forever. likewise,
3480                          * notice if we are disconnected while waiting for the
3481                          * request to be serviced.
3482                          */
3483
3484                         s->request_suspend_timecode_transmission ();
3485                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3486                                 /* twiddle our thumbs */
3487                         }
3488                 }
3489         }
3490
3491         fake_locate (where - snap_delta (event->button.state));
3492 }
3493
3494 void
3495 CursorDrag::motion (GdkEvent* event, bool)
3496 {
3497         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3498         _editor->snap_to_with_modifier (where, event);
3499         if (where != last_pointer_frame()) {
3500                 fake_locate (where - snap_delta (event->button.state));
3501         }
3502 }
3503
3504 void
3505 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3506 {
3507         _editor->_dragging_playhead = false;
3508
3509         _cursor.track_canvas_item().ungrab();
3510
3511         if (!movement_occurred && _stop) {
3512                 return;
3513         }
3514
3515         motion (event, false);
3516
3517         Session* s = _editor->session ();
3518         if (s) {
3519                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3520                 _editor->_pending_locate_request = true;
3521                 s->request_resume_timecode_transmission ();
3522         }
3523 }
3524
3525 void
3526 CursorDrag::aborted (bool)
3527 {
3528         _cursor.track_canvas_item().ungrab();
3529
3530         if (_editor->_dragging_playhead) {
3531                 _editor->session()->request_resume_timecode_transmission ();
3532                 _editor->_dragging_playhead = false;
3533         }
3534
3535         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3536 }
3537
3538 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3539         : RegionDrag (e, i, p, v)
3540 {
3541         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3542 }
3543
3544 void
3545 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3546 {
3547         Drag::start_grab (event, cursor);
3548
3549         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3550         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3551         setup_snap_delta (r->position ());
3552
3553         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3554 }
3555
3556 void
3557 FadeInDrag::setup_pointer_frame_offset ()
3558 {
3559         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3560         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3561         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3562 }
3563
3564 void
3565 FadeInDrag::motion (GdkEvent* event, bool)
3566 {
3567         framecnt_t fade_length;
3568
3569         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3570         _editor->snap_to_with_modifier (pos, event);
3571         pos -= snap_delta (event->button.state);
3572
3573         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3574
3575         if (pos < (region->position() + 64)) {
3576                 fade_length = 64; // this should be a minimum defined somewhere
3577         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3578                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3579         } else {
3580                 fade_length = pos - region->position();
3581         }
3582
3583         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3584
3585                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3586
3587                 if (!tmp) {
3588                         continue;
3589                 }
3590
3591                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3592         }
3593
3594         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3595 }
3596
3597 void
3598 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3599 {
3600         if (!movement_occurred) {
3601                 return;
3602         }
3603
3604         framecnt_t fade_length;
3605         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3606         _editor->snap_to_with_modifier (pos, event);
3607         pos -= snap_delta (event->button.state);
3608
3609         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3610
3611         if (pos < (region->position() + 64)) {
3612                 fade_length = 64; // this should be a minimum defined somewhere
3613         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3614                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3615         } else {
3616                 fade_length = pos - region->position();
3617         }
3618
3619         bool in_command = false;
3620
3621         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3622
3623                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3624
3625                 if (!tmp) {
3626                         continue;
3627                 }
3628
3629                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3630                 XMLNode &before = alist->get_state();
3631
3632                 tmp->audio_region()->set_fade_in_length (fade_length);
3633                 tmp->audio_region()->set_fade_in_active (true);
3634
3635                 if (!in_command) {
3636                         _editor->begin_reversible_command (_("change fade in length"));
3637                         in_command = true;
3638                 }
3639                 XMLNode &after = alist->get_state();
3640                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3641         }
3642
3643         if (in_command) {
3644                 _editor->commit_reversible_command ();
3645         }
3646 }
3647
3648 void
3649 FadeInDrag::aborted (bool)
3650 {
3651         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3652                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3653
3654                 if (!tmp) {
3655                         continue;
3656                 }
3657
3658                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3659         }
3660 }
3661
3662 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3663         : RegionDrag (e, i, p, v)
3664 {
3665         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3666 }
3667
3668 void
3669 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3670 {
3671         Drag::start_grab (event, cursor);
3672
3673         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3674         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3675         setup_snap_delta (r->last_frame ());
3676
3677         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3678 }
3679
3680 void
3681 FadeOutDrag::setup_pointer_frame_offset ()
3682 {
3683         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3684         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3685         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3686 }
3687
3688 void
3689 FadeOutDrag::motion (GdkEvent* event, bool)
3690 {
3691         framecnt_t fade_length;
3692
3693         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3694         _editor->snap_to_with_modifier (pos, event);
3695         pos -= snap_delta (event->button.state);
3696
3697         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3698
3699         if (pos > (region->last_frame() - 64)) {
3700                 fade_length = 64; // this should really be a minimum fade defined somewhere
3701         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3702                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3703         } else {
3704                 fade_length = region->last_frame() - pos;
3705         }
3706
3707         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3708
3709                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3710
3711                 if (!tmp) {
3712                         continue;
3713                 }
3714
3715                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3716         }
3717
3718         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3719 }
3720
3721 void
3722 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3723 {
3724         if (!movement_occurred) {
3725                 return;
3726         }
3727
3728         framecnt_t fade_length;
3729
3730         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3731         _editor->snap_to_with_modifier (pos, event);
3732         pos -= snap_delta (event->button.state);
3733
3734         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3735
3736         if (pos > (region->last_frame() - 64)) {
3737                 fade_length = 64; // this should really be a minimum fade defined somewhere
3738         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3739                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3740         } else {
3741                 fade_length = region->last_frame() - pos;
3742         }
3743
3744         bool in_command = false;
3745
3746         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3747
3748                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3749
3750                 if (!tmp) {
3751                         continue;
3752                 }
3753
3754                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3755                 XMLNode &before = alist->get_state();
3756
3757                 tmp->audio_region()->set_fade_out_length (fade_length);
3758                 tmp->audio_region()->set_fade_out_active (true);
3759
3760                 if (!in_command) {
3761                         _editor->begin_reversible_command (_("change fade out length"));
3762                         in_command = true;
3763                 }
3764                 XMLNode &after = alist->get_state();
3765                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3766         }
3767
3768         if (in_command) {
3769                 _editor->commit_reversible_command ();
3770         }
3771 }
3772
3773 void
3774 FadeOutDrag::aborted (bool)
3775 {
3776         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3777                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3778
3779                 if (!tmp) {
3780                         continue;
3781                 }
3782
3783                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3784         }
3785 }
3786
3787 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3788         : Drag (e, i)
3789         , _selection_changed (false)
3790 {
3791         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3792         Gtk::Window* toplevel = _editor->current_toplevel();
3793         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3794
3795         assert (_marker);
3796
3797         _points.push_back (ArdourCanvas::Duple (0, 0));
3798
3799         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3800 }
3801
3802 MarkerDrag::~MarkerDrag ()
3803 {
3804         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3805                 delete i->location;
3806         }
3807 }
3808
3809 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3810 {
3811         location = new Location (*l);
3812         markers.push_back (m);
3813         move_both = false;
3814 }
3815
3816 void
3817 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3818 {
3819         Drag::start_grab (event, cursor);
3820
3821         bool is_start;
3822
3823         Location *location = _editor->find_location_from_marker (_marker, is_start);
3824         _editor->_dragging_edit_point = true;
3825
3826         update_item (location);
3827
3828         // _drag_line->show();
3829         // _line->raise_to_top();
3830
3831         if (is_start) {
3832                 show_verbose_cursor_time (location->start());
3833         } else {
3834                 show_verbose_cursor_time (location->end());
3835         }
3836         setup_snap_delta (is_start ? location->start() : location->end());
3837
3838         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3839
3840         switch (op) {
3841         case Selection::Toggle:
3842                 /* we toggle on the button release */
3843                 break;
3844         case Selection::Set:
3845                 if (!_editor->selection->selected (_marker)) {
3846                         _editor->selection->set (_marker);
3847                         _selection_changed = true;
3848                 }
3849                 break;
3850         case Selection::Extend:
3851         {
3852                 Locations::LocationList ll;
3853                 list<ArdourMarker*> to_add;
3854                 framepos_t s, e;
3855                 _editor->selection->markers.range (s, e);
3856                 s = min (_marker->position(), s);
3857                 e = max (_marker->position(), e);
3858                 s = min (s, e);
3859                 e = max (s, e);
3860                 if (e < max_framepos) {
3861                         ++e;
3862                 }
3863                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3864                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3865                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3866                         if (lm) {
3867                                 if (lm->start) {
3868                                         to_add.push_back (lm->start);
3869                                 }
3870                                 if (lm->end) {
3871                                         to_add.push_back (lm->end);
3872                                 }
3873                         }
3874                 }
3875                 if (!to_add.empty()) {
3876                         _editor->selection->add (to_add);
3877                         _selection_changed = true;
3878                 }
3879                 break;
3880         }
3881         case Selection::Add:
3882                 _editor->selection->add (_marker);
3883                 _selection_changed = true;
3884
3885                 break;
3886         }
3887
3888         /* Set up copies for us to manipulate during the drag
3889          */
3890
3891         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3892
3893                 Location* l = _editor->find_location_from_marker (*i, is_start);
3894
3895                 if (!l) {
3896                         continue;
3897                 }
3898
3899                 if (l->is_mark()) {
3900                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3901                 } else {
3902                         /* range: check that the other end of the range isn't
3903                            already there.
3904                         */
3905                         CopiedLocationInfo::iterator x;
3906                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3907                                 if (*(*x).location == *l) {
3908                                         break;
3909                                 }
3910                         }
3911                         if (x == _copied_locations.end()) {
3912                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3913                         } else {
3914                                 (*x).markers.push_back (*i);
3915                                 (*x).move_both = true;
3916                         }
3917                 }
3918
3919         }
3920 }
3921
3922 void
3923 MarkerDrag::setup_pointer_frame_offset ()
3924 {
3925         bool is_start;
3926         Location *location = _editor->find_location_from_marker (_marker, is_start);
3927         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3928 }
3929
3930 void
3931 MarkerDrag::motion (GdkEvent* event, bool)
3932 {
3933         framecnt_t f_delta = 0;
3934         bool is_start;
3935         bool move_both = false;
3936         Location *real_location;
3937         Location *copy_location = 0;
3938         framecnt_t const sd = snap_delta (event->button.state);
3939
3940         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3941         framepos_t next = newframe;
3942
3943         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3944                 move_both = true;
3945         }
3946
3947         CopiedLocationInfo::iterator x;
3948
3949         /* find the marker we're dragging, and compute the delta */
3950
3951         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3952
3953                 copy_location = (*x).location;
3954
3955                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3956
3957                         /* this marker is represented by this
3958                          * CopiedLocationMarkerInfo
3959                          */
3960
3961                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3962                                 /* que pasa ?? */
3963                                 return;
3964                         }
3965
3966                         if (real_location->is_mark()) {
3967                                 f_delta = newframe - copy_location->start();
3968                         } else {
3969
3970
3971                                 switch (_marker->type()) {
3972                                 case ArdourMarker::SessionStart:
3973                                 case ArdourMarker::RangeStart:
3974                                 case ArdourMarker::LoopStart:
3975                                 case ArdourMarker::PunchIn:
3976                                         f_delta = newframe - copy_location->start();
3977                                         break;
3978
3979                                 case ArdourMarker::SessionEnd:
3980                                 case ArdourMarker::RangeEnd:
3981                                 case ArdourMarker::LoopEnd:
3982                                 case ArdourMarker::PunchOut:
3983                                         f_delta = newframe - copy_location->end();
3984                                         break;
3985                                 default:
3986                                         /* what kind of marker is this ? */
3987                                         return;
3988                                 }
3989                         }
3990
3991                         break;
3992                 }
3993         }
3994
3995         if (x == _copied_locations.end()) {
3996                 /* hmm, impossible - we didn't find the dragged marker */
3997                 return;
3998         }
3999
4000         /* now move them all */
4001
4002         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4003
4004                 copy_location = x->location;
4005
4006                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4007                         continue;
4008                 }
4009
4010                 if (real_location->locked()) {
4011                         continue;
4012                 }
4013
4014                 if (copy_location->is_mark()) {
4015
4016                         /* now move it */
4017
4018                         copy_location->set_start (copy_location->start() + f_delta);
4019
4020                 } else {
4021
4022                         framepos_t new_start = copy_location->start() + f_delta;
4023                         framepos_t new_end = copy_location->end() + f_delta;
4024
4025                         if (is_start) { // start-of-range marker
4026
4027                                 if (move_both || (*x).move_both) {
4028                                         copy_location->set_start (new_start);
4029                                         copy_location->set_end (new_end);
4030                                 } else  if (new_start < copy_location->end()) {
4031                                         copy_location->set_start (new_start);
4032                                 } else if (newframe > 0) {
4033                                         //_editor->snap_to (next, RoundUpAlways, true);
4034                                         copy_location->set_end (next);
4035                                         copy_location->set_start (newframe);
4036                                 }
4037
4038                         } else { // end marker
4039
4040                                 if (move_both || (*x).move_both) {
4041                                         copy_location->set_end (new_end);
4042                                         copy_location->set_start (new_start);
4043                                 } else if (new_end > copy_location->start()) {
4044                                         copy_location->set_end (new_end);
4045                                 } else if (newframe > 0) {
4046                                         //_editor->snap_to (next, RoundDownAlways, true);
4047                                         copy_location->set_start (next);
4048                                         copy_location->set_end (newframe);
4049                                 }
4050                         }
4051                 }
4052
4053                 update_item (copy_location);
4054
4055                 /* now lookup the actual GUI items used to display this
4056                  * location and move them to wherever the copy of the location
4057                  * is now. This means that the logic in ARDOUR::Location is
4058                  * still enforced, even though we are not (yet) modifying
4059                  * the real Location itself.
4060                  */
4061
4062                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4063
4064                 if (lm) {
4065                         lm->set_position (copy_location->start(), copy_location->end());
4066                 }
4067
4068         }
4069
4070         assert (!_copied_locations.empty());
4071
4072         show_verbose_cursor_time (newframe);
4073 }
4074
4075 void
4076 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4077 {
4078         if (!movement_occurred) {
4079
4080                 if (was_double_click()) {
4081                         _editor->rename_marker (_marker);
4082                         return;
4083                 }
4084
4085                 /* just a click, do nothing but finish
4086                    off the selection process
4087                 */
4088
4089                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4090                 switch (op) {
4091                 case Selection::Set:
4092                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4093                                 _editor->selection->set (_marker);
4094                                 _selection_changed = true;
4095                         }
4096                         break;
4097
4098                 case Selection::Toggle:
4099                         /* we toggle on the button release, click only */
4100                         _editor->selection->toggle (_marker);
4101                         _selection_changed = true;
4102
4103                         break;
4104
4105                 case Selection::Extend:
4106                 case Selection::Add:
4107                         break;
4108                 }
4109
4110                 if (_selection_changed) {
4111                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4112                         _editor->commit_reversible_selection_op();
4113                 }
4114
4115                 return;
4116         }
4117
4118         _editor->_dragging_edit_point = false;
4119
4120         XMLNode &before = _editor->session()->locations()->get_state();
4121         bool in_command = false;
4122
4123         MarkerSelection::iterator i;
4124         CopiedLocationInfo::iterator x;
4125         bool is_start;
4126
4127         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4128              x != _copied_locations.end() && i != _editor->selection->markers.end();
4129              ++i, ++x) {
4130
4131                 Location * location = _editor->find_location_from_marker (*i, is_start);
4132
4133                 if (location) {
4134
4135                         if (location->locked()) {
4136                                 continue;
4137                         }
4138                         if (!in_command) {
4139                                 _editor->begin_reversible_command ( _("move marker") );
4140                                 in_command = true;
4141                         }
4142                         if (location->is_mark()) {
4143                                 location->set_start (((*x).location)->start());
4144                         } else {
4145                                 location->set (((*x).location)->start(), ((*x).location)->end());
4146                         }
4147                 }
4148         }
4149
4150         if (in_command) {
4151                 XMLNode &after = _editor->session()->locations()->get_state();
4152                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4153                 _editor->commit_reversible_command ();
4154         }
4155 }
4156
4157 void
4158 MarkerDrag::aborted (bool movement_occurred)
4159 {
4160         if (!movement_occurred) {
4161                 return;
4162         }
4163
4164         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4165
4166                 /* move all markers to their original location */
4167
4168
4169                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4170
4171                         bool is_start;
4172                         Location * location = _editor->find_location_from_marker (*m, is_start);
4173
4174                         if (location) {
4175                                 (*m)->set_position (is_start ? location->start() : location->end());
4176                         }
4177                 }
4178         }
4179 }
4180
4181 void
4182 MarkerDrag::update_item (Location*)
4183 {
4184         /* noop */
4185 }
4186
4187 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4188         : Drag (e, i)
4189         , _fixed_grab_x (0.0)
4190         , _fixed_grab_y (0.0)
4191         , _cumulative_x_drag (0.0)
4192         , _cumulative_y_drag (0.0)
4193         , _pushing (false)
4194         , _final_index (0)
4195 {
4196         if (_zero_gain_fraction < 0.0) {
4197                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4198         }
4199
4200         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4201
4202         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4203         assert (_point);
4204 }
4205
4206
4207 void
4208 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4209 {
4210         Drag::start_grab (event, _editor->cursors()->fader);
4211
4212         // start the grab at the center of the control point so
4213         // the point doesn't 'jump' to the mouse after the first drag
4214         _fixed_grab_x = _point->get_x();
4215         _fixed_grab_y = _point->get_y();
4216
4217         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4218         setup_snap_delta (pos);
4219
4220         float const fraction = 1 - (_point->get_y() / _point->line().height());
4221         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4222
4223         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4224
4225         if (!_point->can_slide ()) {
4226                 _x_constrained = true;
4227         }
4228 }
4229
4230 void
4231 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4232 {
4233         double dx = _drags->current_pointer_x() - last_pointer_x();
4234         double dy = current_pointer_y() - last_pointer_y();
4235         bool need_snap = true;
4236
4237         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4238                 dx *= 0.1;
4239                 dy *= 0.1;
4240                 need_snap = false;
4241         }
4242
4243         /* coordinate in pixels relative to the start of the region (for region-based automation)
4244            or track (for track-based automation) */
4245         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4246         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4247
4248         // calculate zero crossing point. back off by .01 to stay on the
4249         // positive side of zero
4250         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4251
4252         if (_x_constrained) {
4253                 cx = _fixed_grab_x;
4254         }
4255         if (_y_constrained) {
4256                 cy = _fixed_grab_y;
4257         }
4258
4259         _cumulative_x_drag = cx - _fixed_grab_x;
4260         _cumulative_y_drag = cy - _fixed_grab_y;
4261
4262         cx = max (0.0, cx);
4263         cy = max (0.0, cy);
4264         cy = min ((double) _point->line().height(), cy);
4265
4266         // make sure we hit zero when passing through
4267         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4268                 cy = zero_gain_y;
4269         }
4270
4271         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4272
4273         if (!_x_constrained && need_snap) {
4274                 _editor->snap_to_with_modifier (cx_frames, event);
4275         }
4276
4277         cx_frames -= snap_delta (event->button.state);
4278         cx_frames = min (cx_frames, _point->line().maximum_time());
4279
4280         float const fraction = 1.0 - (cy / _point->line().height());
4281
4282         if (first_motion) {
4283                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4284                 _editor->begin_reversible_command (_("automation event move"));
4285                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4286         }
4287         pair<double, float> result;
4288         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4289
4290         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4291 }
4292
4293 void
4294 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4295 {
4296         if (!movement_occurred) {
4297
4298                 /* just a click */
4299                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4300                         _editor->reset_point_selection ();
4301                 }
4302
4303         } else {
4304                 _point->line().end_drag (_pushing, _final_index);
4305                 _editor->commit_reversible_command ();
4306         }
4307 }
4308
4309 void
4310 ControlPointDrag::aborted (bool)
4311 {
4312         _point->line().reset ();
4313 }
4314
4315 bool
4316 ControlPointDrag::active (Editing::MouseMode m)
4317 {
4318         if (m == Editing::MouseDraw) {
4319                 /* always active in mouse draw */
4320                 return true;
4321         }
4322
4323         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4324         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4325 }
4326
4327 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4328         : Drag (e, i)
4329         , _line (0)
4330         , _fixed_grab_x (0.0)
4331         , _fixed_grab_y (0.0)
4332         , _cumulative_y_drag (0)
4333         , _before (0)
4334         , _after (0)
4335 {
4336         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4337 }
4338
4339 void
4340 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4341 {
4342         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4343         assert (_line);
4344
4345         _item = &_line->grab_item ();
4346
4347         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4348            origin, and ditto for y.
4349         */
4350
4351         double mx = event->button.x;
4352         double my = event->button.y;
4353
4354         _line->grab_item().canvas_to_item (mx, my);
4355
4356         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4357
4358         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4359                 /* no adjacent points */
4360                 return;
4361         }
4362
4363         Drag::start_grab (event, _editor->cursors()->fader);
4364
4365         /* store grab start in item frame */
4366         double const bx = _line->nth (_before)->get_x();
4367         double const ax = _line->nth (_after)->get_x();
4368         double const click_ratio = (ax - mx) / (ax - bx);
4369
4370         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4371
4372         _fixed_grab_x = mx;
4373         _fixed_grab_y = cy;
4374
4375         double fraction = 1.0 - (cy / _line->height());
4376
4377         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4378 }
4379
4380 void
4381 LineDrag::motion (GdkEvent* event, bool first_move)
4382 {
4383         double dy = current_pointer_y() - last_pointer_y();
4384
4385         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4386                 dy *= 0.1;
4387         }
4388
4389         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4390
4391         _cumulative_y_drag = cy - _fixed_grab_y;
4392
4393         cy = max (0.0, cy);
4394         cy = min ((double) _line->height(), cy);
4395
4396         double const fraction = 1.0 - (cy / _line->height());
4397         uint32_t ignored;
4398
4399         if (first_move) {
4400                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4401
4402                 _editor->begin_reversible_command (_("automation range move"));
4403                 _line->start_drag_line (_before, _after, initial_fraction);
4404         }
4405
4406         /* we are ignoring x position for this drag, so we can just pass in anything */
4407         pair<double, float> result;
4408
4409         result = _line->drag_motion (0, fraction, true, false, ignored);
4410         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4411 }
4412
4413 void
4414 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4415 {
4416         if (movement_occurred) {
4417                 motion (event, false);
4418                 _line->end_drag (false, 0);
4419                 _editor->commit_reversible_command ();
4420         } else {
4421                 /* add a new control point on the line */
4422
4423                 AutomationTimeAxisView* atv;
4424
4425                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4426                         framepos_t where = grab_frame ();
4427
4428                         double cx = 0;
4429                         double cy = _fixed_grab_y;
4430
4431                         _line->grab_item().item_to_canvas (cx, cy);
4432
4433                         atv->add_automation_event (event, where, cy, false);
4434                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4435                         AudioRegionView* arv;
4436
4437                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4438                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4439                         }
4440                 }
4441         }
4442 }
4443
4444 void
4445 LineDrag::aborted (bool)
4446 {
4447         _line->reset ();
4448 }
4449
4450 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4451         : Drag (e, i),
4452           _line (0),
4453           _arv (0),
4454           _region_view_grab_x (0.0),
4455           _cumulative_x_drag (0),
4456           _before (0.0),
4457           _max_x (0)
4458 {
4459         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4460 }
4461
4462 void
4463 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4464 {
4465         Drag::start_grab (event);
4466
4467         _line = reinterpret_cast<Line*> (_item);
4468         assert (_line);
4469
4470         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4471
4472         double cx = event->button.x;
4473         double cy = event->button.y;
4474
4475         _item->parent()->canvas_to_item (cx, cy);
4476
4477         /* store grab start in parent frame */
4478         _region_view_grab_x = cx;
4479
4480         _before = *(float*) _item->get_data ("position");
4481
4482         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4483
4484         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4485 }
4486
4487 void
4488 FeatureLineDrag::motion (GdkEvent*, bool)
4489 {
4490         double dx = _drags->current_pointer_x() - last_pointer_x();
4491
4492         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4493
4494         _cumulative_x_drag += dx;
4495
4496         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4497
4498         if (cx > _max_x){
4499                 cx = _max_x;
4500         }
4501         else if(cx < 0){
4502                 cx = 0;
4503         }
4504
4505         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4506         assert (bbox);
4507         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4508
4509         float *pos = new float;
4510         *pos = cx;
4511
4512         _line->set_data ("position", pos);
4513
4514         _before = cx;
4515 }
4516
4517 void
4518 FeatureLineDrag::finished (GdkEvent*, bool)
4519 {
4520         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4521         _arv->update_transient(_before, _before);
4522 }
4523
4524 void
4525 FeatureLineDrag::aborted (bool)
4526 {
4527         //_line->reset ();
4528 }
4529
4530 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4531         : Drag (e, i)
4532         , _vertical_only (false)
4533 {
4534         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4535 }
4536
4537 void
4538 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4539 {
4540         Drag::start_grab (event);
4541         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4542 }
4543
4544 void
4545 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4546 {
4547         framepos_t start;
4548         framepos_t end;
4549         double y1;
4550         double y2;
4551
4552         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4553
4554         framepos_t grab = grab_frame ();
4555         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4556                 _editor->snap_to_with_modifier (grab, event);
4557         } else {
4558                 grab = raw_grab_frame ();
4559         }
4560
4561         /* base start and end on initial click position */
4562
4563         if (pf < grab) {
4564                 start = pf;
4565                 end = grab;
4566         } else {
4567                 end = pf;
4568                 start = grab;
4569         }
4570
4571         if (current_pointer_y() < grab_y()) {
4572                 y1 = current_pointer_y();
4573                 y2 = grab_y();
4574         } else {
4575                 y2 = current_pointer_y();
4576                 y1 = grab_y();
4577         }
4578
4579         if (start != end || y1 != y2) {
4580
4581                 double x1 = _editor->sample_to_pixel (start);
4582                 double x2 = _editor->sample_to_pixel (end);
4583                 const double min_dimension = 2.0;
4584
4585                 if (_vertical_only) {
4586                         /* fixed 10 pixel width */
4587                         x2 = x1 + 10;
4588                 } else {
4589                         if (x2 < x1) {
4590                                 x2 = min (x1 - min_dimension, x2);
4591                         } else {
4592                                 x2 = max (x1 + min_dimension, x2);
4593                         }
4594                 }
4595
4596                 if (y2 < y1) {
4597                         y2 = min (y1 - min_dimension, y2);
4598                 } else {
4599                         y2 = max (y1 + min_dimension, y2);
4600                 }
4601
4602                 /* translate rect into item space and set */
4603
4604                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4605
4606                 /* this drag is a _trackview_only == true drag, so the y1 and
4607                  * y2 (computed using current_pointer_y() and grab_y()) will be
4608                  * relative to the top of the trackview group). The
4609                  * rubberband rect has the same parent/scroll offset as the
4610                  * the trackview group, so we can use the "r" rect directly
4611                  * to set the shape of the rubberband.
4612                  */
4613
4614                 _editor->rubberband_rect->set (r);
4615                 _editor->rubberband_rect->show();
4616                 _editor->rubberband_rect->raise_to_top();
4617
4618                 show_verbose_cursor_time (pf);
4619
4620                 do_select_things (event, true);
4621         }
4622 }
4623
4624 void
4625 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4626 {
4627         framepos_t x1;
4628         framepos_t x2;
4629         framepos_t grab = grab_frame ();
4630         framepos_t lpf = last_pointer_frame ();
4631
4632         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4633                 grab = raw_grab_frame ();
4634                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4635         }
4636
4637         if (grab < lpf) {
4638                 x1 = grab;
4639                 x2 = lpf;
4640         } else {
4641                 x2 = grab;
4642                 x1 = lpf;
4643         }
4644
4645         double y1;
4646         double y2;
4647
4648         if (current_pointer_y() < grab_y()) {
4649                 y1 = current_pointer_y();
4650                 y2 = grab_y();
4651         } else {
4652                 y2 = current_pointer_y();
4653                 y1 = grab_y();
4654         }
4655
4656         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4657 }
4658
4659 void
4660 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4661 {
4662         if (movement_occurred) {
4663
4664                 motion (event, false);
4665                 do_select_things (event, false);
4666
4667         } else {
4668
4669                 /* just a click */
4670
4671                 bool do_deselect = true;
4672                 MidiTimeAxisView* mtv;
4673
4674                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4675                         /* MIDI track */
4676                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4677                                 /* nothing selected */
4678                                 add_midi_region (mtv, true);
4679                                 do_deselect = false;
4680                         }
4681                 }
4682
4683                 /* do not deselect if Primary or Tertiary (toggle-select or
4684                  * extend-select are pressed.
4685                  */
4686
4687                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4688                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4689                     do_deselect) {
4690                         deselect_things ();
4691                 }
4692
4693         }
4694
4695         _editor->rubberband_rect->hide();
4696 }
4697
4698 void
4699 RubberbandSelectDrag::aborted (bool)
4700 {
4701         _editor->rubberband_rect->hide ();
4702 }
4703
4704 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4705         : RegionDrag (e, i, p, v)
4706 {
4707         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4708 }
4709
4710 void
4711 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4712 {
4713         Drag::start_grab (event, cursor);
4714
4715         _editor->get_selection().add (_primary);
4716
4717         framepos_t where = _primary->region()->position();
4718         setup_snap_delta (where);
4719
4720         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4721 }
4722
4723 void
4724 TimeFXDrag::motion (GdkEvent* event, bool)
4725 {
4726         RegionView* rv = _primary;
4727         StreamView* cv = rv->get_time_axis_view().view ();
4728
4729         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4730         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4731         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4732         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4733         _editor->snap_to_with_modifier (pf, event);
4734         pf -= snap_delta (event->button.state);
4735
4736         if (pf > rv->region()->position()) {
4737                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4738         }
4739
4740         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4741 }
4742
4743 void
4744 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4745 {
4746         /* this may have been a single click, no drag. We still want the dialog
4747            to show up in that case, so that the user can manually edit the
4748            parameters for the timestretch.
4749         */
4750
4751         float fraction = 1.0;
4752
4753         if (movement_occurred) {
4754
4755                 motion (event, false);
4756
4757                 _primary->get_time_axis_view().hide_timestretch ();
4758
4759                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4760
4761                 if (adjusted_frame_pos < _primary->region()->position()) {
4762                         /* backwards drag of the left edge - not usable */
4763                         return;
4764                 }
4765
4766                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4767
4768                 fraction = (double) newlen / (double) _primary->region()->length();
4769
4770 #ifndef USE_RUBBERBAND
4771                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4772                 if (_primary->region()->data_type() == DataType::AUDIO) {
4773                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4774                 }
4775 #endif
4776         }
4777
4778         if (!_editor->get_selection().regions.empty()) {
4779                 /* primary will already be included in the selection, and edit
4780                    group shared editing will propagate selection across
4781                    equivalent regions, so just use the current region
4782                    selection.
4783                 */
4784
4785                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4786                         error << _("An error occurred while executing time stretch operation") << endmsg;
4787                 }
4788         }
4789 }
4790
4791 void
4792 TimeFXDrag::aborted (bool)
4793 {
4794         _primary->get_time_axis_view().hide_timestretch ();
4795 }
4796
4797 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4798         : Drag (e, i)
4799 {
4800         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4801 }
4802
4803 void
4804 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4805 {
4806         Drag::start_grab (event);
4807 }
4808
4809 void
4810 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4811 {
4812         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4813 }
4814
4815 void
4816 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4817 {
4818         if (movement_occurred && _editor->session()) {
4819                 /* make sure we stop */
4820                 _editor->session()->request_transport_speed (0.0);
4821         }
4822 }
4823
4824 void
4825 ScrubDrag::aborted (bool)
4826 {
4827         /* XXX: TODO */
4828 }
4829
4830 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4831         : Drag (e, i)
4832         , _operation (o)
4833         , _add (false)
4834         , _time_selection_at_start (!_editor->get_selection().time.empty())
4835 {
4836         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4837
4838         if (_time_selection_at_start) {
4839                 start_at_start = _editor->get_selection().time.start();
4840                 end_at_start = _editor->get_selection().time.end_frame();
4841         }
4842 }
4843
4844 void
4845 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4846 {
4847         if (_editor->session() == 0) {
4848                 return;
4849         }
4850
4851         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4852
4853         switch (_operation) {
4854         case CreateSelection:
4855                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4856                         _add = true;
4857                 } else {
4858                         _add = false;
4859                 }
4860                 cursor = _editor->cursors()->selector;
4861                 Drag::start_grab (event, cursor);
4862                 break;
4863
4864         case SelectionStartTrim:
4865                 if (_editor->clicked_axisview) {
4866                         _editor->clicked_axisview->order_selection_trims (_item, true);
4867                 }
4868                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4869                 break;
4870
4871         case SelectionEndTrim:
4872                 if (_editor->clicked_axisview) {
4873                         _editor->clicked_axisview->order_selection_trims (_item, false);
4874                 }
4875                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4876                 break;
4877
4878         case SelectionMove:
4879                 Drag::start_grab (event, cursor);
4880                 break;
4881
4882         case SelectionExtend:
4883                 Drag::start_grab (event, cursor);
4884                 break;
4885         }
4886
4887         if (_operation == SelectionMove) {
4888                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4889         } else {
4890                 show_verbose_cursor_time (adjusted_current_frame (event));
4891         }
4892 }
4893
4894 void
4895 SelectionDrag::setup_pointer_frame_offset ()
4896 {
4897         switch (_operation) {
4898         case CreateSelection:
4899                 _pointer_frame_offset = 0;
4900                 break;
4901
4902         case SelectionStartTrim:
4903         case SelectionMove:
4904                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4905                 break;
4906
4907         case SelectionEndTrim:
4908                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4909                 break;
4910
4911         case SelectionExtend:
4912                 break;
4913         }
4914 }
4915
4916 void
4917 SelectionDrag::motion (GdkEvent* event, bool first_move)
4918 {
4919         framepos_t start = 0;
4920         framepos_t end = 0;
4921         framecnt_t length = 0;
4922         framecnt_t distance = 0;
4923
4924         framepos_t const pending_position = adjusted_current_frame (event);
4925
4926         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4927                 return;
4928         }
4929
4930         switch (_operation) {
4931         case CreateSelection:
4932         {
4933                 framepos_t grab = grab_frame ();
4934
4935                 if (first_move) {
4936                         grab = adjusted_current_frame (event, false);
4937                         if (grab < pending_position) {
4938                                 _editor->snap_to (grab, RoundDownMaybe);
4939                         }  else {
4940                                 _editor->snap_to (grab, RoundUpMaybe);
4941                         }
4942                 }
4943
4944                 if (pending_position < grab) {
4945                         start = pending_position;
4946                         end = grab;
4947                 } else {
4948                         end = pending_position;
4949                         start = grab;
4950                 }
4951
4952                 /* first drag: Either add to the selection
4953                    or create a new selection
4954                 */
4955
4956                 if (first_move) {
4957
4958                         if (_add) {
4959
4960                                 /* adding to the selection */
4961                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4962                                 _editor->clicked_selection = _editor->selection->add (start, end);
4963                                 _add = false;
4964
4965                         } else {
4966
4967                                 /* new selection */
4968
4969                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4970                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4971                                 }
4972
4973                                 _editor->clicked_selection = _editor->selection->set (start, end);
4974                         }
4975                 }
4976
4977                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4978                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4979                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4980                 if (atest) {
4981                         _editor->selection->add (atest);
4982                         break;
4983                 }
4984
4985                 /* select all tracks within the rectangle that we've marked out so far */
4986                 TrackViewList new_selection;
4987                 TrackViewList& all_tracks (_editor->track_views);
4988
4989                 ArdourCanvas::Coord const top = grab_y();
4990                 ArdourCanvas::Coord const bottom = current_pointer_y();
4991
4992                 if (top >= 0 && bottom >= 0) {
4993
4994                         //first, find the tracks that are covered in the y range selection
4995                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4996                                 if ((*i)->covered_by_y_range (top, bottom)) {
4997                                         new_selection.push_back (*i);
4998                                 }
4999                         }
5000
5001                         //now find any tracks that are GROUPED with the tracks we selected
5002                         TrackViewList grouped_add = new_selection;
5003                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5004                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5005                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5006                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5007                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5008                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5009                                                         grouped_add.push_back (*j);
5010                                         }
5011                                 }
5012                         }
5013
5014                         //now compare our list with the current selection, and add or remove as necessary
5015                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5016                         TrackViewList tracks_to_add;
5017                         TrackViewList tracks_to_remove;
5018                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5019                                 if ( !_editor->selection->tracks.contains ( *i ) )
5020                                         tracks_to_add.push_back ( *i );
5021                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5022                                 if ( !grouped_add.contains ( *i ) )
5023                                         tracks_to_remove.push_back ( *i );
5024                         _editor->selection->add(tracks_to_add);
5025                         _editor->selection->remove(tracks_to_remove);
5026
5027                 }
5028         }
5029         break;
5030
5031         case SelectionStartTrim:
5032
5033                 end = _editor->selection->time[_editor->clicked_selection].end;
5034
5035                 if (pending_position > end) {
5036                         start = end;
5037                 } else {
5038                         start = pending_position;
5039                 }
5040                 break;
5041
5042         case SelectionEndTrim:
5043
5044                 start = _editor->selection->time[_editor->clicked_selection].start;
5045
5046                 if (pending_position < start) {
5047                         end = start;
5048                 } else {
5049                         end = pending_position;
5050                 }
5051
5052                 break;
5053
5054         case SelectionMove:
5055
5056                 start = _editor->selection->time[_editor->clicked_selection].start;
5057                 end = _editor->selection->time[_editor->clicked_selection].end;
5058
5059                 length = end - start;
5060                 distance = pending_position - start;
5061                 start = pending_position;
5062                 _editor->snap_to (start);
5063
5064                 end = start + length;
5065
5066                 break;
5067
5068         case SelectionExtend:
5069                 break;
5070         }
5071
5072         if (start != end) {
5073                 switch (_operation) {
5074                 case SelectionMove:
5075                         if (_time_selection_at_start) {
5076                                 _editor->selection->move_time (distance);
5077                         }
5078                         break;
5079                 default:
5080                         _editor->selection->replace (_editor->clicked_selection, start, end);
5081                 }
5082         }
5083
5084         if (_operation == SelectionMove) {
5085                 show_verbose_cursor_time(start);
5086         } else {
5087                 show_verbose_cursor_time(pending_position);
5088         }
5089 }
5090
5091 void
5092 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5093 {
5094         Session* s = _editor->session();
5095
5096         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5097         if (movement_occurred) {
5098                 motion (event, false);
5099                 /* XXX this is not object-oriented programming at all. ick */
5100                 if (_editor->selection->time.consolidate()) {
5101                         _editor->selection->TimeChanged ();
5102                 }
5103
5104                 /* XXX what if its a music time selection? */
5105                 if (s) {
5106                         if (s->get_play_range() && s->transport_rolling()) {
5107                                 s->request_play_range (&_editor->selection->time, true);
5108                         } else if (!s->config.get_external_sync()) {
5109                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5110                                         if (_operation == SelectionEndTrim)
5111                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5112                                         else
5113                                                 s->request_locate (_editor->get_selection().time.start());
5114                                 }
5115                         }
5116
5117                         if (_editor->get_selection().time.length() != 0) {
5118                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5119                         } else {
5120                                 s->clear_range_selection ();
5121                         }
5122                 }
5123
5124         } else {
5125                 /* just a click, no pointer movement.
5126                  */
5127
5128                 if (_operation == SelectionExtend) {
5129                         if (_time_selection_at_start) {
5130                                 framepos_t pos = adjusted_current_frame (event, false);
5131                                 framepos_t start = min (pos, start_at_start);
5132                                 framepos_t end = max (pos, end_at_start);
5133                                 _editor->selection->set (start, end);
5134                         }
5135                 } else {
5136                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5137                                 if (_editor->clicked_selection) {
5138                                         _editor->selection->remove (_editor->clicked_selection);
5139                                 }
5140                         } else {
5141                                 if (!_editor->clicked_selection) {
5142                                         _editor->selection->clear_time();
5143                                 }
5144                         }
5145                 }
5146
5147                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5148                         _editor->selection->set (_editor->clicked_axisview);
5149                 }
5150
5151                 if (s && s->get_play_range () && s->transport_rolling()) {
5152                         s->request_stop (false, false);
5153                 }
5154
5155         }
5156
5157         _editor->stop_canvas_autoscroll ();
5158         _editor->clicked_selection = 0;
5159         _editor->commit_reversible_selection_op ();
5160 }
5161
5162 void
5163 SelectionDrag::aborted (bool)
5164 {
5165         /* XXX: TODO */
5166 }
5167
5168 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5169         : Drag (e, i, false),
5170           _operation (o),
5171           _copy (false)
5172 {
5173         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5174
5175         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5176                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5177                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5178         _drag_rect->hide ();
5179
5180         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5181         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5182 }
5183
5184 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5185 {
5186         /* normal canvas items will be cleaned up when their parent group is deleted. But
5187            this item is created as the child of a long-lived parent group, and so we
5188            need to explicitly delete it.
5189         */
5190         delete _drag_rect;
5191 }
5192
5193 void
5194 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5195 {
5196         if (_editor->session() == 0) {
5197                 return;
5198         }
5199
5200         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5201
5202         if (!_editor->temp_location) {
5203                 _editor->temp_location = new Location (*_editor->session());
5204         }
5205
5206         switch (_operation) {
5207         case CreateSkipMarker:
5208         case CreateRangeMarker:
5209         case CreateTransportMarker:
5210         case CreateCDMarker:
5211
5212                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5213                         _copy = true;
5214                 } else {
5215                         _copy = false;
5216                 }
5217                 cursor = _editor->cursors()->selector;
5218                 break;
5219         }
5220
5221         Drag::start_grab (event, cursor);
5222
5223         show_verbose_cursor_time (adjusted_current_frame (event));
5224 }
5225
5226 void
5227 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5228 {
5229         framepos_t start = 0;
5230         framepos_t end = 0;
5231         ArdourCanvas::Rectangle *crect;
5232
5233         switch (_operation) {
5234         case CreateSkipMarker:
5235                 crect = _editor->range_bar_drag_rect;
5236                 break;
5237         case CreateRangeMarker:
5238                 crect = _editor->range_bar_drag_rect;
5239                 break;
5240         case CreateTransportMarker:
5241                 crect = _editor->transport_bar_drag_rect;
5242                 break;
5243         case CreateCDMarker:
5244                 crect = _editor->cd_marker_bar_drag_rect;
5245                 break;
5246         default:
5247                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5248                 return;
5249                 break;
5250         }
5251
5252         framepos_t const pf = adjusted_current_frame (event);
5253
5254         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5255                 framepos_t grab = grab_frame ();
5256                 _editor->snap_to (grab);
5257
5258                 if (pf < grab_frame()) {
5259                         start = pf;
5260                         end = grab;
5261                 } else {
5262                         end = pf;
5263                         start = grab;
5264                 }
5265
5266                 /* first drag: Either add to the selection
5267                    or create a new selection.
5268                 */
5269
5270                 if (first_move) {
5271
5272                         _editor->temp_location->set (start, end);
5273
5274                         crect->show ();
5275
5276                         update_item (_editor->temp_location);
5277                         _drag_rect->show();
5278                         //_drag_rect->raise_to_top();
5279
5280                 }
5281         }
5282
5283         if (start != end) {
5284                 _editor->temp_location->set (start, end);
5285
5286                 double x1 = _editor->sample_to_pixel (start);
5287                 double x2 = _editor->sample_to_pixel (end);
5288                 crect->set_x0 (x1);
5289                 crect->set_x1 (x2);
5290
5291                 update_item (_editor->temp_location);
5292         }
5293
5294         show_verbose_cursor_time (pf);
5295
5296 }
5297
5298 void
5299 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5300 {
5301         Location * newloc = 0;
5302         string rangename;
5303         int flags;
5304
5305         if (movement_occurred) {
5306                 motion (event, false);
5307                 _drag_rect->hide();
5308
5309                 switch (_operation) {
5310                 case CreateSkipMarker:
5311                 case CreateRangeMarker:
5312                 case CreateCDMarker:
5313                     {
5314                         XMLNode &before = _editor->session()->locations()->get_state();
5315                         if (_operation == CreateSkipMarker) {
5316                                 _editor->begin_reversible_command (_("new skip marker"));
5317                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5318                                 flags = Location::IsRangeMarker | Location::IsSkip;
5319                                 _editor->range_bar_drag_rect->hide();
5320                         } else if (_operation == CreateCDMarker) {
5321                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5322                                 _editor->begin_reversible_command (_("new CD marker"));
5323                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5324                                 _editor->cd_marker_bar_drag_rect->hide();
5325                         } else {
5326                                 _editor->begin_reversible_command (_("new skip marker"));
5327                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5328                                 flags = Location::IsRangeMarker;
5329                                 _editor->range_bar_drag_rect->hide();
5330                         }
5331                         newloc = new Location (
5332                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5333                                 );
5334
5335                         _editor->session()->locations()->add (newloc, true);
5336                         XMLNode &after = _editor->session()->locations()->get_state();
5337                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5338                         _editor->commit_reversible_command ();
5339                         break;
5340                     }
5341
5342                 case CreateTransportMarker:
5343                         // popup menu to pick loop or punch
5344                         _editor->new_transport_marker_context_menu (&event->button, _item);
5345                         break;
5346                 }
5347
5348         } else {
5349
5350                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5351
5352                 if (_operation == CreateTransportMarker) {
5353
5354                         /* didn't drag, so just locate */
5355
5356                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5357
5358                 } else if (_operation == CreateCDMarker) {
5359
5360                         /* didn't drag, but mark is already created so do
5361                          * nothing */
5362
5363                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5364
5365                         framepos_t start;
5366                         framepos_t end;
5367
5368                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5369
5370                         if (end == max_framepos) {
5371                                 end = _editor->session()->current_end_frame ();
5372                         }
5373
5374                         if (start == max_framepos) {
5375                                 start = _editor->session()->current_start_frame ();
5376                         }
5377
5378                         switch (_editor->mouse_mode) {
5379                         case MouseObject:
5380                                 /* find the two markers on either side and then make the selection from it */
5381                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5382                                 break;
5383
5384                         case MouseRange:
5385                                 /* find the two markers on either side of the click and make the range out of it */
5386                                 _editor->selection->set (start, end);
5387                                 break;
5388
5389                         default:
5390                                 break;
5391                         }
5392                 }
5393         }
5394
5395         _editor->stop_canvas_autoscroll ();
5396 }
5397
5398 void
5399 RangeMarkerBarDrag::aborted (bool movement_occurred)
5400 {
5401         if (movement_occurred) {
5402                 _drag_rect->hide ();
5403         }
5404 }
5405
5406 void
5407 RangeMarkerBarDrag::update_item (Location* location)
5408 {
5409         double const x1 = _editor->sample_to_pixel (location->start());
5410         double const x2 = _editor->sample_to_pixel (location->end());
5411
5412         _drag_rect->set_x0 (x1);
5413         _drag_rect->set_x1 (x2);
5414 }
5415
5416 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5417         : Drag (e, i)
5418         , _cumulative_dx (0)
5419         , _cumulative_dy (0)
5420         , _was_selected (false)
5421 {
5422         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5423
5424         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5425         assert (_primary);
5426         _region = &_primary->region_view ();
5427         _note_height = _region->midi_stream_view()->note_height ();
5428 }
5429
5430 void
5431 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5432 {
5433         Drag::start_grab (event);
5434         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5435
5436         if (!(_was_selected = _primary->selected())) {
5437
5438                 /* tertiary-click means extend selection - we'll do that on button release,
5439                    so don't add it here, because otherwise we make it hard to figure
5440                    out the "extend-to" range.
5441                 */
5442
5443                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5444
5445                 if (!extend) {
5446                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5447
5448                         if (add) {
5449                                 _region->note_selected (_primary, true);
5450                         } else {
5451                                 _editor->get_selection().clear_points();
5452                                 _region->unique_select (_primary);
5453                         }
5454                 }
5455         }
5456 }
5457
5458 /** @return Current total drag x change in frames */
5459 frameoffset_t
5460 NoteDrag::total_dx (const guint state) const
5461 {
5462         /* dx in frames */
5463         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5464
5465         /* primary note time */
5466         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5467
5468         /* new time of the primary note in session frames */
5469         frameoffset_t st = n + dx + snap_delta (state);
5470
5471         framepos_t const rp = _region->region()->position ();
5472
5473         /* prevent the note being dragged earlier than the region's position */
5474         st = max (st, rp);
5475
5476         /* possibly snap and return corresponding delta */
5477
5478         bool snap = true;
5479
5480         if (ArdourKeyboard::indicates_snap (state)) {
5481                 if (_editor->snap_mode () != SnapOff) {
5482                         snap = false;
5483                 }
5484         } else {
5485                 if (_editor->snap_mode () == SnapOff) {
5486                         snap = false;
5487                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5488                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5489                                 snap = true;
5490                         }
5491                 }
5492         }
5493
5494         frameoffset_t ret;
5495         if (snap) {
5496                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5497                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5498         } else {
5499                 ret = st - n - snap_delta (state);
5500         }
5501         return ret;
5502 }
5503
5504 /** @return Current total drag y change in note number */
5505 int8_t
5506 NoteDrag::total_dy () const
5507 {
5508         MidiStreamView* msv = _region->midi_stream_view ();
5509         double const y = _region->midi_view()->y_position ();
5510         /* new current note */
5511         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5512         /* clamp */
5513         n = max (msv->lowest_note(), n);
5514         n = min (msv->highest_note(), n);
5515         /* and work out delta */
5516         return n - msv->y_to_note (grab_y() - y);
5517 }
5518
5519 void
5520 NoteDrag::motion (GdkEvent * event, bool)
5521 {
5522         /* Total change in x and y since the start of the drag */
5523         frameoffset_t const dx = total_dx (event->button.state);
5524         int8_t const dy = total_dy ();
5525
5526         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5527         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5528         double const tdy = -dy * _note_height - _cumulative_dy;
5529
5530         if (tdx || tdy) {
5531                 _cumulative_dx += tdx;
5532                 _cumulative_dy += tdy;
5533
5534                 int8_t note_delta = total_dy();
5535
5536                 _region->move_selection (tdx, tdy, note_delta);
5537
5538                 /* the new note value may be the same as the old one, but we
5539                  * don't know what that means because the selection may have
5540                  * involved more than one note and we might be doing something
5541                  * odd with them. so show the note value anyway, always.
5542                  */
5543
5544                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5545
5546                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5547         }
5548 }
5549
5550 void
5551 NoteDrag::finished (GdkEvent* ev, bool moved)
5552 {
5553         if (!moved) {
5554                 /* no motion - select note */
5555
5556                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5557                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5558
5559                         bool changed = false;
5560
5561                         if (_was_selected) {
5562                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5563                                 if (add) {
5564                                         _region->note_deselected (_primary);
5565                                         changed = true;
5566                                 } else {
5567                                         _editor->get_selection().clear_points();
5568                                         _region->unique_select (_primary);
5569                                         changed = true;
5570                                 }
5571                         } else {
5572                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5573                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5574
5575                                 if (!extend && !add && _region->selection_size() > 1) {
5576                                         _editor->get_selection().clear_points();
5577                                         _region->unique_select (_primary);
5578                                         changed = true;
5579                                 } else if (extend) {
5580                                         _region->note_selected (_primary, true, true);
5581                                         changed = true;
5582                                 } else {
5583                                         /* it was added during button press */
5584                                         changed = true;
5585
5586                                 }
5587                         }
5588
5589                         if (changed) {
5590                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5591                                 _editor->commit_reversible_selection_op();
5592                         }
5593                 }
5594         } else {
5595                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5596         }
5597 }
5598
5599 void
5600 NoteDrag::aborted (bool)
5601 {
5602         /* XXX: TODO */
5603 }
5604
5605 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5606 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5607         : Drag (editor, atv->base_item ())
5608         , _ranges (r)
5609         , _y_origin (atv->y_position())
5610         , _nothing_to_drag (false)
5611 {
5612         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5613         setup (atv->lines ());
5614 }
5615
5616 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5617 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5618         : Drag (editor, rv->get_canvas_group ())
5619         , _ranges (r)
5620         , _y_origin (rv->get_time_axis_view().y_position())
5621         , _nothing_to_drag (false)
5622         , _integral (false)
5623 {
5624         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5625
5626         list<boost::shared_ptr<AutomationLine> > lines;
5627
5628         AudioRegionView*      audio_view;
5629         AutomationRegionView* automation_view;
5630         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5631                 lines.push_back (audio_view->get_gain_line ());
5632         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5633                 lines.push_back (automation_view->line ());
5634                 _integral = true;
5635         } else {
5636                 error << _("Automation range drag created for invalid region type") << endmsg;
5637         }
5638
5639         setup (lines);
5640 }
5641
5642 /** @param lines AutomationLines to drag.
5643  *  @param offset Offset from the session start to the points in the AutomationLines.
5644  */
5645 void
5646 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5647 {
5648         /* find the lines that overlap the ranges being dragged */
5649         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5650         while (i != lines.end ()) {
5651                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5652                 ++j;
5653
5654                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5655
5656                 /* check this range against all the AudioRanges that we are using */
5657                 list<AudioRange>::const_iterator k = _ranges.begin ();
5658                 while (k != _ranges.end()) {
5659                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5660                                 break;
5661                         }
5662                         ++k;
5663                 }
5664
5665                 /* add it to our list if it overlaps at all */
5666                 if (k != _ranges.end()) {
5667                         Line n;
5668                         n.line = *i;
5669                         n.state = 0;
5670                         n.range = r;
5671                         _lines.push_back (n);
5672                 }
5673
5674                 i = j;
5675         }
5676
5677         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5678 }
5679
5680 double
5681 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5682 {
5683         return 1.0 - ((global_y - _y_origin) / line->height());
5684 }
5685
5686 double
5687 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5688 {
5689         const double v = list->eval(x);
5690         return _integral ? rint(v) : v;
5691 }
5692
5693 void
5694 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5695 {
5696         Drag::start_grab (event, cursor);
5697
5698         /* Get line states before we start changing things */
5699         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5700                 i->state = &i->line->get_state ();
5701                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5702         }
5703
5704         if (_ranges.empty()) {
5705
5706                 /* No selected time ranges: drag all points */
5707                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5708                         uint32_t const N = i->line->npoints ();
5709                         for (uint32_t j = 0; j < N; ++j) {
5710                                 i->points.push_back (i->line->nth (j));
5711                         }
5712                 }
5713
5714         }
5715
5716         if (_nothing_to_drag) {
5717                 return;
5718         }
5719 }
5720
5721 void
5722 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5723 {
5724         if (_nothing_to_drag && !first_move) {
5725                 return;
5726         }
5727
5728         if (first_move) {
5729                 _editor->begin_reversible_command (_("automation range move"));
5730
5731                 if (!_ranges.empty()) {
5732
5733                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5734
5735                                 framecnt_t const half = (i->start + i->end) / 2;
5736
5737                                 /* find the line that this audio range starts in */
5738                                 list<Line>::iterator j = _lines.begin();
5739                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5740                                         ++j;
5741                                 }
5742
5743                                 if (j != _lines.end()) {
5744                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5745
5746                                 /* j is the line that this audio range starts in; fade into it;
5747                                    64 samples length plucked out of thin air.
5748                                 */
5749
5750                                         framepos_t a = i->start + 64;
5751                                         if (a > half) {
5752                                                 a = half;
5753                                         }
5754
5755                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5756                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5757
5758                                         XMLNode &before = the_list->get_state();
5759                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5760                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5761
5762                                         if (add_p || add_q) {
5763                                                 _editor->session()->add_command (
5764                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5765                                         }
5766                                 }
5767
5768                                 /* same thing for the end */
5769
5770                                 j = _lines.begin();
5771                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5772                                         ++j;
5773                                 }
5774
5775                                 if (j != _lines.end()) {
5776                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5777
5778                                         /* j is the line that this audio range starts in; fade out of it;
5779                                            64 samples length plucked out of thin air.
5780                                         */
5781
5782                                         framepos_t b = i->end - 64;
5783                                         if (b < half) {
5784                                                 b = half;
5785                                         }
5786
5787                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5788                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5789
5790                                         XMLNode &before = the_list->get_state();
5791                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5792                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5793
5794                                         if (add_p || add_q) {
5795                                                 _editor->session()->add_command (
5796                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5797                                         }
5798                                 }
5799                         }
5800
5801                         _nothing_to_drag = true;
5802
5803                         /* Find all the points that should be dragged and put them in the relevant
5804                            points lists in the Line structs.
5805                         */
5806
5807                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5808
5809                                 uint32_t const N = i->line->npoints ();
5810                                 for (uint32_t j = 0; j < N; ++j) {
5811
5812                                         /* here's a control point on this line */
5813                                         ControlPoint* p = i->line->nth (j);
5814                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5815
5816                                         /* see if it's inside a range */
5817                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5818                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5819                                                 ++k;
5820                                         }
5821
5822                                         if (k != _ranges.end()) {
5823                                                 /* dragging this point */
5824                                                 _nothing_to_drag = false;
5825                                                 i->points.push_back (p);
5826                                         }
5827                                 }
5828                         }
5829                 }
5830
5831                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5832                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5833                 }
5834         }
5835
5836         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5837                 float const f = y_fraction (l->line, current_pointer_y());
5838                 /* we are ignoring x position for this drag, so we can just pass in anything */
5839                 pair<double, float> result;
5840                 uint32_t ignored;
5841                 result = l->line->drag_motion (0, f, true, false, ignored);
5842                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5843         }
5844 }
5845
5846 void
5847 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5848 {
5849         if (_nothing_to_drag || !motion_occurred) {
5850                 return;
5851         }
5852
5853         motion (event, false);
5854         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5855                 i->line->end_drag (false, 0);
5856         }
5857
5858         _editor->commit_reversible_command ();
5859 }
5860
5861 void
5862 AutomationRangeDrag::aborted (bool)
5863 {
5864         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5865                 i->line->reset ();
5866         }
5867 }
5868
5869 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5870         : view (v)
5871         , initial_time_axis_view (itav)
5872 {
5873         /* note that time_axis_view may be null if the regionview was created
5874          * as part of a copy operation.
5875          */
5876         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5877         layer = v->region()->layer ();
5878         initial_y = v->get_canvas_group()->position().y;
5879         initial_playlist = v->region()->playlist ();
5880         initial_position = v->region()->position ();
5881         initial_end = v->region()->position () + v->region()->length ();
5882 }
5883
5884 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5885         : Drag (e, i->canvas_item ())
5886         , _region_view (r)
5887         , _patch_change (i)
5888         , _cumulative_dx (0)
5889 {
5890         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5891                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5892                                                    grab_frame()));
5893 }
5894
5895 void
5896 PatchChangeDrag::motion (GdkEvent* ev, bool)
5897 {
5898         framepos_t f = adjusted_current_frame (ev);
5899         boost::shared_ptr<Region> r = _region_view->region ();
5900         f = max (f, r->position ());
5901         f = min (f, r->last_frame ());
5902
5903         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5904         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5905         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5906         _cumulative_dx = dxu;
5907 }
5908
5909 void
5910 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5911 {
5912         if (!movement_occurred) {
5913                 return;
5914         }
5915
5916         boost::shared_ptr<Region> r (_region_view->region ());
5917         framepos_t f = adjusted_current_frame (ev);
5918         f = max (f, r->position ());
5919         f = min (f, r->last_frame ());
5920
5921         _region_view->move_patch_change (
5922                 *_patch_change,
5923                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5924                 );
5925 }
5926
5927 void
5928 PatchChangeDrag::aborted (bool)
5929 {
5930         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5931 }
5932
5933 void
5934 PatchChangeDrag::setup_pointer_frame_offset ()
5935 {
5936         boost::shared_ptr<Region> region = _region_view->region ();
5937         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5938 }
5939
5940 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5941         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5942         , _region_view (rv)
5943 {
5944
5945 }
5946
5947 void
5948 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5949 {
5950         _region_view->update_drag_selection (
5951                 x1, x2, y1, y2,
5952                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5953 }
5954
5955 void
5956 MidiRubberbandSelectDrag::deselect_things ()
5957 {
5958         /* XXX */
5959 }
5960
5961 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5962         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5963         , _region_view (rv)
5964 {
5965         _vertical_only = true;
5966 }
5967
5968 void
5969 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5970 {
5971         double const y = _region_view->midi_view()->y_position ();
5972
5973         y1 = max (0.0, y1 - y);
5974         y2 = max (0.0, y2 - y);
5975
5976         _region_view->update_vertical_drag_selection (
5977                 y1,
5978                 y2,
5979                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5980                 );
5981 }
5982
5983 void
5984 MidiVerticalSelectDrag::deselect_things ()
5985 {
5986         /* XXX */
5987 }
5988
5989 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5990         : RubberbandSelectDrag (e, i)
5991 {
5992
5993 }
5994
5995 void
5996 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5997 {
5998         if (drag_in_progress) {
5999                 /* We just want to select things at the end of the drag, not during it */
6000                 return;
6001         }
6002
6003         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6004
6005         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6006
6007         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6008
6009         _editor->commit_reversible_selection_op ();
6010 }
6011
6012 void
6013 EditorRubberbandSelectDrag::deselect_things ()
6014 {
6015         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6016
6017         _editor->selection->clear_tracks();
6018         _editor->selection->clear_regions();
6019         _editor->selection->clear_points ();
6020         _editor->selection->clear_lines ();
6021         _editor->selection->clear_midi_notes ();
6022
6023         _editor->commit_reversible_selection_op();
6024 }
6025
6026 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6027         : Drag (e, i)
6028         , _region_view (rv)
6029         , _drag_rect (0)
6030 {
6031         _note[0] = _note[1] = 0;
6032 }
6033
6034 NoteCreateDrag::~NoteCreateDrag ()
6035 {
6036         delete _drag_rect;
6037 }
6038
6039 framecnt_t
6040 NoteCreateDrag::grid_frames (framepos_t t) const
6041 {
6042         bool success;
6043         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6044         if (!success) {
6045                 grid_beats = Evoral::Beats(1);
6046         }
6047
6048         return _region_view->region_beats_to_region_frames (grid_beats);
6049 }
6050
6051 void
6052 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6053 {
6054         Drag::start_grab (event, cursor);
6055
6056         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6057
6058         framepos_t pf = _drags->current_pointer_frame ();
6059         framecnt_t const g = grid_frames (pf);
6060
6061         /* Hack so that we always snap to the note that we are over, instead of snapping
6062            to the next one if we're more than halfway through the one we're over.
6063         */
6064         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6065                 pf -= g / 2;
6066         }
6067
6068         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6069         _note[1] = _note[0];
6070
6071         MidiStreamView* sv = _region_view->midi_stream_view ();
6072         double const x = _editor->sample_to_pixel (_note[0]);
6073         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6074
6075         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6076         _drag_rect->set_outline_all ();
6077         _drag_rect->set_outline_color (0xffffff99);
6078         _drag_rect->set_fill_color (0xffffff66);
6079 }
6080
6081 void
6082 NoteCreateDrag::motion (GdkEvent* event, bool)
6083 {
6084         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6085         double const x0 = _editor->sample_to_pixel (_note[0]);
6086         double const x1 = _editor->sample_to_pixel (_note[1]);
6087         _drag_rect->set_x0 (std::min(x0, x1));
6088         _drag_rect->set_x1 (std::max(x0, x1));
6089 }
6090
6091 void
6092 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6093 {
6094         if (!had_movement) {
6095                 return;
6096         }
6097
6098         framepos_t const start = min (_note[0], _note[1]);
6099         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6100
6101         framecnt_t const g = grid_frames (start);
6102         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6103
6104         if (_editor->snap_mode() == SnapNormal && length < g) {
6105                 length = g;
6106         }
6107
6108         Evoral::Beats length_beats = max (
6109                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6110
6111         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6112 }
6113
6114 double
6115 NoteCreateDrag::y_to_region (double y) const
6116 {
6117         double x = 0;
6118         _region_view->get_canvas_group()->canvas_to_item (x, y);
6119         return y;
6120 }
6121
6122 void
6123 NoteCreateDrag::aborted (bool)
6124 {
6125
6126 }
6127
6128 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6129         : Drag (e, i)
6130         , arv (rv)
6131         , start (start_yn)
6132 {
6133         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6134 }
6135
6136 void
6137 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6138 {
6139         Drag::start_grab (event, cursor);
6140 }
6141
6142 void
6143 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6144 {
6145         double distance;
6146         double new_length;
6147         framecnt_t len;
6148
6149         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6150
6151         if (start) {
6152                 distance = _drags->current_pointer_x() - grab_x();
6153                 len = ar->fade_in()->back()->when;
6154         } else {
6155                 distance = grab_x() - _drags->current_pointer_x();
6156                 len = ar->fade_out()->back()->when;
6157         }
6158
6159         /* how long should it be ? */
6160
6161         new_length = len + _editor->pixel_to_sample (distance);
6162
6163         /* now check with the region that this is legal */
6164
6165         new_length = ar->verify_xfade_bounds (new_length, start);
6166
6167         if (start) {
6168                 arv->reset_fade_in_shape_width (ar, new_length);
6169         } else {
6170                 arv->reset_fade_out_shape_width (ar, new_length);
6171         }
6172 }
6173
6174 void
6175 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6176 {
6177         double distance;
6178         double new_length;
6179         framecnt_t len;
6180
6181         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6182
6183         if (start) {
6184                 distance = _drags->current_pointer_x() - grab_x();
6185                 len = ar->fade_in()->back()->when;
6186         } else {
6187                 distance = grab_x() - _drags->current_pointer_x();
6188                 len = ar->fade_out()->back()->when;
6189         }
6190
6191         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6192
6193         _editor->begin_reversible_command ("xfade trim");
6194         ar->playlist()->clear_owned_changes ();
6195
6196         if (start) {
6197                 ar->set_fade_in_length (new_length);
6198         } else {
6199                 ar->set_fade_out_length (new_length);
6200         }
6201
6202         /* Adjusting the xfade may affect other regions in the playlist, so we need
6203            to get undo Commands from the whole playlist rather than just the
6204            region.
6205         */
6206
6207         vector<Command*> cmds;
6208         ar->playlist()->rdiff (cmds);
6209         _editor->session()->add_commands (cmds);
6210         _editor->commit_reversible_command ();
6211
6212 }
6213
6214 void
6215 CrossfadeEdgeDrag::aborted (bool)
6216 {
6217         if (start) {
6218                 // arv->redraw_start_xfade ();
6219         } else {
6220                 // arv->redraw_end_xfade ();
6221         }
6222 }
6223
6224 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6225         : Drag (e, item, true)
6226         , line (new EditorCursor (*e))
6227 {
6228         line->set_position (pos);
6229         line->show ();
6230 }
6231
6232 RegionCutDrag::~RegionCutDrag ()
6233 {
6234         delete line;
6235 }
6236
6237 void
6238 RegionCutDrag::motion (GdkEvent*, bool)
6239 {
6240         framepos_t where = _drags->current_pointer_frame();
6241         _editor->snap_to (where);
6242
6243         line->set_position (where);
6244 }
6245
6246 void
6247 RegionCutDrag::finished (GdkEvent*, bool)
6248 {
6249         _editor->get_track_canvas()->canvas()->re_enter();
6250
6251         framepos_t pos = _drags->current_pointer_frame();
6252
6253         line->hide ();
6254
6255         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6256
6257         if (rs.empty()) {
6258                 return;
6259         }
6260
6261         _editor->split_regions_at (pos, rs);
6262 }
6263
6264 void
6265 RegionCutDrag::aborted (bool)
6266 {
6267 }