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 }
3126
3127 void
3128 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3129 {
3130         Drag::start_grab (event, cursor);
3131         show_verbose_cursor_time (adjusted_current_frame(event));
3132 }
3133
3134 void
3135 MeterMarkerDrag::setup_pointer_frame_offset ()
3136 {
3137         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3138 }
3139
3140 void
3141 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3142 {
3143         if (!_marker->meter().movable()) {
3144                 return;
3145         }
3146
3147         if (first_move) {
3148
3149                 // create a dummy marker for visual representation of moving the
3150                 // section, because whether its a copy or not, we're going to
3151                 // leave or lose the original marker (leave if its a copy; lose if its
3152                 // not, because we'll remove it from the map).
3153
3154                 MeterSection section (_marker->meter());
3155
3156                 if (!section.movable()) {
3157                         return;
3158                 }
3159
3160                 char name[64];
3161                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3162
3163                 _marker = new MeterMarker (
3164                         *_editor,
3165                         *_editor->meter_group,
3166                         UIConfiguration::instance().color ("meter marker"),
3167                         name,
3168                         *new MeterSection (_marker->meter())
3169                 );
3170
3171                 /* use the new marker for the grab */
3172                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3173
3174                 if (!_copy) {
3175                         TempoMap& map (_editor->session()->tempo_map());
3176                         /* get current state */
3177                         before_state = &map.get_state();
3178                         /* remove the section while we drag it */
3179                         map.remove_meter (section, true);
3180                 }
3181         }
3182
3183         framepos_t const pf = adjusted_current_frame (event);
3184
3185         _marker->set_position (pf);
3186         show_verbose_cursor_time (pf);
3187 }
3188
3189 void
3190 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3191 {
3192         if (!movement_occurred) {
3193                 if (was_double_click()) {
3194                         _editor->edit_meter_marker (*_marker);
3195                 }
3196                 return;
3197         }
3198
3199         if (!_marker->meter().movable()) {
3200                 return;
3201         }
3202
3203         motion (event, false);
3204
3205         Timecode::BBT_Time when;
3206
3207         TempoMap& map (_editor->session()->tempo_map());
3208         map.bbt_time (_marker->position(), when);
3209
3210         if (_copy == true) {
3211                 _editor->begin_reversible_command (_("copy meter mark"));
3212                 XMLNode &before = map.get_state();
3213
3214                 if (_marker->meter().position_lock_style() == AudioTime) {
3215                         map.add_meter (_marker->meter(), _marker->position());
3216                 } else {
3217                         map.add_meter (_marker->meter(), map.bbt_to_beats (when), when);
3218                 }
3219
3220                 XMLNode &after = map.get_state();
3221                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
3222                 _editor->commit_reversible_command ();
3223
3224         } else {
3225                 _editor->begin_reversible_command (_("move meter mark"));
3226
3227                 /* we removed it before, so add it back now */
3228                 if (_marker->meter().position_lock_style() == AudioTime) {
3229                         map.add_meter (_marker->meter(), _marker->position());
3230                 } else {
3231                         map.add_meter (_marker->meter(), map.beat_at_frame (_marker->position()), when);
3232                 }
3233
3234                 XMLNode &after = map.get_state();
3235                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3236                 _editor->commit_reversible_command ();
3237         }
3238
3239         // delete the dummy marker we used for visual representation while moving.
3240         // a new visual marker will show up automatically.
3241         delete _marker;
3242 }
3243
3244 void
3245 MeterMarkerDrag::aborted (bool moved)
3246 {
3247         _marker->set_position (_marker->meter().frame ());
3248
3249         if (moved) {
3250                 TempoMap& map (_editor->session()->tempo_map());
3251                 /* we removed it before, so add it back now */
3252                 map.add_meter (_marker->meter(), map.beat_at_frame (_marker->meter().frame()), _marker->meter().bbt());
3253                 // delete the dummy marker we used for visual representation while moving.
3254                 // a new visual marker will show up automatically.
3255                 delete _marker;
3256         }
3257 }
3258
3259 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3260         : Drag (e, i)
3261         , _copy (c)
3262         , before_state (0)
3263 {
3264         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3265
3266         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3267         _real_section = &_marker->tempo();
3268         assert (_marker);
3269 }
3270
3271 void
3272 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3273 {
3274         Drag::start_grab (event, cursor);
3275         show_verbose_cursor_time (adjusted_current_frame (event));
3276 }
3277
3278 void
3279 TempoMarkerDrag::setup_pointer_frame_offset ()
3280 {
3281         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3282 }
3283
3284 void
3285 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3286 {
3287         if (!_marker->tempo().movable()) {
3288                 return;
3289         }
3290
3291         if (first_move) {
3292
3293                 // create a dummy marker for visual representation of moving the
3294                 // section, because whether its a copy or not, we're going to
3295                 // leave or lose the original marker (leave if its a copy; lose if its
3296                 // not, because we'll remove it from the map).
3297
3298                 // create a dummy marker for visual representation of moving the copy.
3299                 // The actual copying is not done before we reach the finish callback.
3300
3301                 char name[64];
3302                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3303
3304                 TempoSection section (_marker->tempo());
3305
3306                 _marker = new TempoMarker (
3307                         *_editor,
3308                         *_editor->tempo_group,
3309                         UIConfiguration::instance().color ("tempo marker"),
3310                         name,
3311                         *new TempoSection (_marker->tempo())
3312                         );
3313
3314                 /* use the new marker for the grab */
3315                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3316
3317                 if (!_copy) {
3318                         _editor->begin_reversible_command (_("move tempo mark"));
3319                         TempoMap& map (_editor->session()->tempo_map());
3320                         /* get current state */
3321                         before_state = &map.get_state();
3322                 }
3323                 _marker->hide();
3324         }
3325
3326         framepos_t const pf = adjusted_current_frame (event, false);
3327         double const baf = _editor->session()->tempo_map().beat_at_frame (pf);
3328
3329         _marker->set_position (adjusted_current_frame (event, false));
3330         _editor->session()->tempo_map().gui_set_tempo_frame (*_real_section, pf, baf);
3331
3332         show_verbose_cursor_time (pf);
3333 }
3334
3335 void
3336 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3337 {
3338         if (!movement_occurred) {
3339                 if (was_double_click()) {
3340                         _editor->edit_tempo_marker (*_marker);
3341                 }
3342                 return;
3343         }
3344
3345         if (!_marker->tempo().movable()) {
3346                 return;
3347         }
3348
3349         //motion (event, false);
3350
3351         TempoMap& map (_editor->session()->tempo_map());
3352
3353         if (_copy == true) {
3354                 _editor->begin_reversible_command (_("copy tempo mark"));
3355                 XMLNode &before = map.get_state();
3356
3357                 if (_marker->tempo().position_lock_style() == MusicTime) {
3358                         map.add_tempo (_marker->tempo(), _real_section->beat(), _marker->tempo().type());
3359                 } else {
3360                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3361                 }
3362
3363                 XMLNode &after = map.get_state();
3364                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3365                 _editor->commit_reversible_command ();
3366
3367         } else {
3368                 /* we removed it before, so add it back now */
3369                 if (_marker->tempo().position_lock_style() == MusicTime) {
3370                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->beat(), _marker->tempo().type());
3371                 } else {
3372                         map.replace_tempo (*_real_section, _marker->tempo().beats_per_minute() , _real_section->frame(), _marker->tempo().type());
3373                 }
3374
3375                 XMLNode &after = map.get_state();
3376                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3377                 _editor->commit_reversible_command ();
3378         }
3379
3380         // delete the dummy marker we used for visual representation while moving.
3381         // a new visual marker will show up automatically.
3382         delete _marker;
3383 }
3384
3385 void
3386 TempoMarkerDrag::aborted (bool moved)
3387 {
3388         _marker->set_position (_marker->tempo().frame());
3389         if (moved) {
3390                 TempoMap& map (_editor->session()->tempo_map());
3391                 /* we removed it before, so add it back now */
3392                 if (_marker->tempo().position_lock_style() == MusicTime) {
3393                         map.add_tempo (_marker->tempo(), _marker->tempo().beat(), _marker->tempo().type());
3394                 } else {
3395                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3396                 }
3397                 // delete the dummy marker we used for visual representation while moving.
3398                 // a new visual marker will show up automatically.
3399                 delete _marker;
3400         }
3401 }
3402
3403 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3404         : Drag (e, &c.track_canvas_item(), false)
3405         , _cursor (c)
3406         , _stop (s)
3407         , _grab_zoom (0.0)
3408 {
3409         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3410 }
3411
3412 /** Do all the things we do when dragging the playhead to make it look as though
3413  *  we have located, without actually doing the locate (because that would cause
3414  *  the diskstream buffers to be refilled, which is too slow).
3415  */
3416 void
3417 CursorDrag::fake_locate (framepos_t t)
3418 {
3419         if (_editor->session () == 0) {
3420                 return;
3421         }
3422
3423         _editor->playhead_cursor->set_position (t);
3424
3425         Session* s = _editor->session ();
3426         if (s->timecode_transmission_suspended ()) {
3427                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3428                 /* This is asynchronous so it will be sent "now"
3429                  */
3430                 s->send_mmc_locate (f);
3431                 /* These are synchronous and will be sent during the next
3432                    process cycle
3433                 */
3434                 s->queue_full_time_code ();
3435                 s->queue_song_position_pointer ();
3436         }
3437
3438         show_verbose_cursor_time (t);
3439         _editor->UpdateAllTransportClocks (t);
3440 }
3441
3442 void
3443 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3444 {
3445         Drag::start_grab (event, c);
3446         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3447
3448         _grab_zoom = _editor->samples_per_pixel;
3449
3450         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3451
3452         _editor->snap_to_with_modifier (where, event);
3453
3454         _editor->_dragging_playhead = true;
3455
3456         Session* s = _editor->session ();
3457
3458         /* grab the track canvas item as well */
3459
3460         _cursor.track_canvas_item().grab();
3461
3462         if (s) {
3463                 if (_was_rolling && _stop) {
3464                         s->request_stop ();
3465                 }
3466
3467                 if (s->is_auditioning()) {
3468                         s->cancel_audition ();
3469                 }
3470
3471
3472                 if (AudioEngine::instance()->connected()) {
3473
3474                         /* do this only if we're the engine is connected
3475                          * because otherwise this request will never be
3476                          * serviced and we'll busy wait forever. likewise,
3477                          * notice if we are disconnected while waiting for the
3478                          * request to be serviced.
3479                          */
3480
3481                         s->request_suspend_timecode_transmission ();
3482                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3483                                 /* twiddle our thumbs */
3484                         }
3485                 }
3486         }
3487
3488         fake_locate (where - snap_delta (event->button.state));
3489 }
3490
3491 void
3492 CursorDrag::motion (GdkEvent* event, bool)
3493 {
3494         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3495         _editor->snap_to_with_modifier (where, event);
3496         if (where != last_pointer_frame()) {
3497                 fake_locate (where - snap_delta (event->button.state));
3498         }
3499 }
3500
3501 void
3502 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3503 {
3504         _editor->_dragging_playhead = false;
3505
3506         _cursor.track_canvas_item().ungrab();
3507
3508         if (!movement_occurred && _stop) {
3509                 return;
3510         }
3511
3512         motion (event, false);
3513
3514         Session* s = _editor->session ();
3515         if (s) {
3516                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3517                 _editor->_pending_locate_request = true;
3518                 s->request_resume_timecode_transmission ();
3519         }
3520 }
3521
3522 void
3523 CursorDrag::aborted (bool)
3524 {
3525         _cursor.track_canvas_item().ungrab();
3526
3527         if (_editor->_dragging_playhead) {
3528                 _editor->session()->request_resume_timecode_transmission ();
3529                 _editor->_dragging_playhead = false;
3530         }
3531
3532         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3533 }
3534
3535 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3536         : RegionDrag (e, i, p, v)
3537 {
3538         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3539 }
3540
3541 void
3542 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3543 {
3544         Drag::start_grab (event, cursor);
3545
3546         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3547         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3548         setup_snap_delta (r->position ());
3549
3550         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3551 }
3552
3553 void
3554 FadeInDrag::setup_pointer_frame_offset ()
3555 {
3556         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3557         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3558         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3559 }
3560
3561 void
3562 FadeInDrag::motion (GdkEvent* event, bool)
3563 {
3564         framecnt_t fade_length;
3565
3566         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3567         _editor->snap_to_with_modifier (pos, event);
3568         pos -= snap_delta (event->button.state);
3569
3570         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3571
3572         if (pos < (region->position() + 64)) {
3573                 fade_length = 64; // this should be a minimum defined somewhere
3574         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3575                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3576         } else {
3577                 fade_length = pos - region->position();
3578         }
3579
3580         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3581
3582                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3583
3584                 if (!tmp) {
3585                         continue;
3586                 }
3587
3588                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3589         }
3590
3591         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3592 }
3593
3594 void
3595 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3596 {
3597         if (!movement_occurred) {
3598                 return;
3599         }
3600
3601         framecnt_t fade_length;
3602         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3603         _editor->snap_to_with_modifier (pos, event);
3604         pos -= snap_delta (event->button.state);
3605
3606         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3607
3608         if (pos < (region->position() + 64)) {
3609                 fade_length = 64; // this should be a minimum defined somewhere
3610         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3611                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3612         } else {
3613                 fade_length = pos - region->position();
3614         }
3615
3616         bool in_command = false;
3617
3618         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3619
3620                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3621
3622                 if (!tmp) {
3623                         continue;
3624                 }
3625
3626                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3627                 XMLNode &before = alist->get_state();
3628
3629                 tmp->audio_region()->set_fade_in_length (fade_length);
3630                 tmp->audio_region()->set_fade_in_active (true);
3631
3632                 if (!in_command) {
3633                         _editor->begin_reversible_command (_("change fade in length"));
3634                         in_command = true;
3635                 }
3636                 XMLNode &after = alist->get_state();
3637                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3638         }
3639
3640         if (in_command) {
3641                 _editor->commit_reversible_command ();
3642         }
3643 }
3644
3645 void
3646 FadeInDrag::aborted (bool)
3647 {
3648         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3649                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3650
3651                 if (!tmp) {
3652                         continue;
3653                 }
3654
3655                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3656         }
3657 }
3658
3659 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3660         : RegionDrag (e, i, p, v)
3661 {
3662         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3663 }
3664
3665 void
3666 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3667 {
3668         Drag::start_grab (event, cursor);
3669
3670         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3671         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3672         setup_snap_delta (r->last_frame ());
3673
3674         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3675 }
3676
3677 void
3678 FadeOutDrag::setup_pointer_frame_offset ()
3679 {
3680         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3681         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3682         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3683 }
3684
3685 void
3686 FadeOutDrag::motion (GdkEvent* event, bool)
3687 {
3688         framecnt_t fade_length;
3689
3690         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3691         _editor->snap_to_with_modifier (pos, event);
3692         pos -= snap_delta (event->button.state);
3693
3694         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3695
3696         if (pos > (region->last_frame() - 64)) {
3697                 fade_length = 64; // this should really be a minimum fade defined somewhere
3698         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3699                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3700         } else {
3701                 fade_length = region->last_frame() - pos;
3702         }
3703
3704         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3705
3706                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3707
3708                 if (!tmp) {
3709                         continue;
3710                 }
3711
3712                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3713         }
3714
3715         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3716 }
3717
3718 void
3719 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3720 {
3721         if (!movement_occurred) {
3722                 return;
3723         }
3724
3725         framecnt_t fade_length;
3726
3727         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3728         _editor->snap_to_with_modifier (pos, event);
3729         pos -= snap_delta (event->button.state);
3730
3731         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3732
3733         if (pos > (region->last_frame() - 64)) {
3734                 fade_length = 64; // this should really be a minimum fade defined somewhere
3735         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3736                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3737         } else {
3738                 fade_length = region->last_frame() - pos;
3739         }
3740
3741         bool in_command = false;
3742
3743         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3744
3745                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3746
3747                 if (!tmp) {
3748                         continue;
3749                 }
3750
3751                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3752                 XMLNode &before = alist->get_state();
3753
3754                 tmp->audio_region()->set_fade_out_length (fade_length);
3755                 tmp->audio_region()->set_fade_out_active (true);
3756
3757                 if (!in_command) {
3758                         _editor->begin_reversible_command (_("change fade out length"));
3759                         in_command = true;
3760                 }
3761                 XMLNode &after = alist->get_state();
3762                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3763         }
3764
3765         if (in_command) {
3766                 _editor->commit_reversible_command ();
3767         }
3768 }
3769
3770 void
3771 FadeOutDrag::aborted (bool)
3772 {
3773         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3774                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3775
3776                 if (!tmp) {
3777                         continue;
3778                 }
3779
3780                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3781         }
3782 }
3783
3784 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3785         : Drag (e, i)
3786         , _selection_changed (false)
3787 {
3788         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3789         Gtk::Window* toplevel = _editor->current_toplevel();
3790         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3791
3792         assert (_marker);
3793
3794         _points.push_back (ArdourCanvas::Duple (0, 0));
3795
3796         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3797 }
3798
3799 MarkerDrag::~MarkerDrag ()
3800 {
3801         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3802                 delete i->location;
3803         }
3804 }
3805
3806 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3807 {
3808         location = new Location (*l);
3809         markers.push_back (m);
3810         move_both = false;
3811 }
3812
3813 void
3814 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3815 {
3816         Drag::start_grab (event, cursor);
3817
3818         bool is_start;
3819
3820         Location *location = _editor->find_location_from_marker (_marker, is_start);
3821         _editor->_dragging_edit_point = true;
3822
3823         update_item (location);
3824
3825         // _drag_line->show();
3826         // _line->raise_to_top();
3827
3828         if (is_start) {
3829                 show_verbose_cursor_time (location->start());
3830         } else {
3831                 show_verbose_cursor_time (location->end());
3832         }
3833         setup_snap_delta (is_start ? location->start() : location->end());
3834
3835         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3836
3837         switch (op) {
3838         case Selection::Toggle:
3839                 /* we toggle on the button release */
3840                 break;
3841         case Selection::Set:
3842                 if (!_editor->selection->selected (_marker)) {
3843                         _editor->selection->set (_marker);
3844                         _selection_changed = true;
3845                 }
3846                 break;
3847         case Selection::Extend:
3848         {
3849                 Locations::LocationList ll;
3850                 list<ArdourMarker*> to_add;
3851                 framepos_t s, e;
3852                 _editor->selection->markers.range (s, e);
3853                 s = min (_marker->position(), s);
3854                 e = max (_marker->position(), e);
3855                 s = min (s, e);
3856                 e = max (s, e);
3857                 if (e < max_framepos) {
3858                         ++e;
3859                 }
3860                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3861                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3862                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3863                         if (lm) {
3864                                 if (lm->start) {
3865                                         to_add.push_back (lm->start);
3866                                 }
3867                                 if (lm->end) {
3868                                         to_add.push_back (lm->end);
3869                                 }
3870                         }
3871                 }
3872                 if (!to_add.empty()) {
3873                         _editor->selection->add (to_add);
3874                         _selection_changed = true;
3875                 }
3876                 break;
3877         }
3878         case Selection::Add:
3879                 _editor->selection->add (_marker);
3880                 _selection_changed = true;
3881
3882                 break;
3883         }
3884
3885         /* Set up copies for us to manipulate during the drag
3886          */
3887
3888         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3889
3890                 Location* l = _editor->find_location_from_marker (*i, is_start);
3891
3892                 if (!l) {
3893                         continue;
3894                 }
3895
3896                 if (l->is_mark()) {
3897                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3898                 } else {
3899                         /* range: check that the other end of the range isn't
3900                            already there.
3901                         */
3902                         CopiedLocationInfo::iterator x;
3903                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3904                                 if (*(*x).location == *l) {
3905                                         break;
3906                                 }
3907                         }
3908                         if (x == _copied_locations.end()) {
3909                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3910                         } else {
3911                                 (*x).markers.push_back (*i);
3912                                 (*x).move_both = true;
3913                         }
3914                 }
3915
3916         }
3917 }
3918
3919 void
3920 MarkerDrag::setup_pointer_frame_offset ()
3921 {
3922         bool is_start;
3923         Location *location = _editor->find_location_from_marker (_marker, is_start);
3924         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3925 }
3926
3927 void
3928 MarkerDrag::motion (GdkEvent* event, bool)
3929 {
3930         framecnt_t f_delta = 0;
3931         bool is_start;
3932         bool move_both = false;
3933         Location *real_location;
3934         Location *copy_location = 0;
3935         framecnt_t const sd = snap_delta (event->button.state);
3936
3937         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3938         framepos_t next = newframe;
3939
3940         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3941                 move_both = true;
3942         }
3943
3944         CopiedLocationInfo::iterator x;
3945
3946         /* find the marker we're dragging, and compute the delta */
3947
3948         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3949
3950                 copy_location = (*x).location;
3951
3952                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3953
3954                         /* this marker is represented by this
3955                          * CopiedLocationMarkerInfo
3956                          */
3957
3958                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3959                                 /* que pasa ?? */
3960                                 return;
3961                         }
3962
3963                         if (real_location->is_mark()) {
3964                                 f_delta = newframe - copy_location->start();
3965                         } else {
3966
3967
3968                                 switch (_marker->type()) {
3969                                 case ArdourMarker::SessionStart:
3970                                 case ArdourMarker::RangeStart:
3971                                 case ArdourMarker::LoopStart:
3972                                 case ArdourMarker::PunchIn:
3973                                         f_delta = newframe - copy_location->start();
3974                                         break;
3975
3976                                 case ArdourMarker::SessionEnd:
3977                                 case ArdourMarker::RangeEnd:
3978                                 case ArdourMarker::LoopEnd:
3979                                 case ArdourMarker::PunchOut:
3980                                         f_delta = newframe - copy_location->end();
3981                                         break;
3982                                 default:
3983                                         /* what kind of marker is this ? */
3984                                         return;
3985                                 }
3986                         }
3987
3988                         break;
3989                 }
3990         }
3991
3992         if (x == _copied_locations.end()) {
3993                 /* hmm, impossible - we didn't find the dragged marker */
3994                 return;
3995         }
3996
3997         /* now move them all */
3998
3999         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4000
4001                 copy_location = x->location;
4002
4003                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4004                         continue;
4005                 }
4006
4007                 if (real_location->locked()) {
4008                         continue;
4009                 }
4010
4011                 if (copy_location->is_mark()) {
4012
4013                         /* now move it */
4014
4015                         copy_location->set_start (copy_location->start() + f_delta);
4016
4017                 } else {
4018
4019                         framepos_t new_start = copy_location->start() + f_delta;
4020                         framepos_t new_end = copy_location->end() + f_delta;
4021
4022                         if (is_start) { // start-of-range marker
4023
4024                                 if (move_both || (*x).move_both) {
4025                                         copy_location->set_start (new_start);
4026                                         copy_location->set_end (new_end);
4027                                 } else  if (new_start < copy_location->end()) {
4028                                         copy_location->set_start (new_start);
4029                                 } else if (newframe > 0) {
4030                                         //_editor->snap_to (next, RoundUpAlways, true);
4031                                         copy_location->set_end (next);
4032                                         copy_location->set_start (newframe);
4033                                 }
4034
4035                         } else { // end marker
4036
4037                                 if (move_both || (*x).move_both) {
4038                                         copy_location->set_end (new_end);
4039                                         copy_location->set_start (new_start);
4040                                 } else if (new_end > copy_location->start()) {
4041                                         copy_location->set_end (new_end);
4042                                 } else if (newframe > 0) {
4043                                         //_editor->snap_to (next, RoundDownAlways, true);
4044                                         copy_location->set_start (next);
4045                                         copy_location->set_end (newframe);
4046                                 }
4047                         }
4048                 }
4049
4050                 update_item (copy_location);
4051
4052                 /* now lookup the actual GUI items used to display this
4053                  * location and move them to wherever the copy of the location
4054                  * is now. This means that the logic in ARDOUR::Location is
4055                  * still enforced, even though we are not (yet) modifying
4056                  * the real Location itself.
4057                  */
4058
4059                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4060
4061                 if (lm) {
4062                         lm->set_position (copy_location->start(), copy_location->end());
4063                 }
4064
4065         }
4066
4067         assert (!_copied_locations.empty());
4068
4069         show_verbose_cursor_time (newframe);
4070 }
4071
4072 void
4073 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4074 {
4075         if (!movement_occurred) {
4076
4077                 if (was_double_click()) {
4078                         _editor->rename_marker (_marker);
4079                         return;
4080                 }
4081
4082                 /* just a click, do nothing but finish
4083                    off the selection process
4084                 */
4085
4086                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4087                 switch (op) {
4088                 case Selection::Set:
4089                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4090                                 _editor->selection->set (_marker);
4091                                 _selection_changed = true;
4092                         }
4093                         break;
4094
4095                 case Selection::Toggle:
4096                         /* we toggle on the button release, click only */
4097                         _editor->selection->toggle (_marker);
4098                         _selection_changed = true;
4099
4100                         break;
4101
4102                 case Selection::Extend:
4103                 case Selection::Add:
4104                         break;
4105                 }
4106
4107                 if (_selection_changed) {
4108                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4109                         _editor->commit_reversible_selection_op();
4110                 }
4111
4112                 return;
4113         }
4114
4115         _editor->_dragging_edit_point = false;
4116
4117         XMLNode &before = _editor->session()->locations()->get_state();
4118         bool in_command = false;
4119
4120         MarkerSelection::iterator i;
4121         CopiedLocationInfo::iterator x;
4122         bool is_start;
4123
4124         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4125              x != _copied_locations.end() && i != _editor->selection->markers.end();
4126              ++i, ++x) {
4127
4128                 Location * location = _editor->find_location_from_marker (*i, is_start);
4129
4130                 if (location) {
4131
4132                         if (location->locked()) {
4133                                 continue;
4134                         }
4135                         if (!in_command) {
4136                                 _editor->begin_reversible_command ( _("move marker") );
4137                                 in_command = true;
4138                         }
4139                         if (location->is_mark()) {
4140                                 location->set_start (((*x).location)->start());
4141                         } else {
4142                                 location->set (((*x).location)->start(), ((*x).location)->end());
4143                         }
4144                 }
4145         }
4146
4147         if (in_command) {
4148                 XMLNode &after = _editor->session()->locations()->get_state();
4149                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4150                 _editor->commit_reversible_command ();
4151         }
4152 }
4153
4154 void
4155 MarkerDrag::aborted (bool movement_occurred)
4156 {
4157         if (!movement_occurred) {
4158                 return;
4159         }
4160
4161         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4162
4163                 /* move all markers to their original location */
4164
4165
4166                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4167
4168                         bool is_start;
4169                         Location * location = _editor->find_location_from_marker (*m, is_start);
4170
4171                         if (location) {
4172                                 (*m)->set_position (is_start ? location->start() : location->end());
4173                         }
4174                 }
4175         }
4176 }
4177
4178 void
4179 MarkerDrag::update_item (Location*)
4180 {
4181         /* noop */
4182 }
4183
4184 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4185         : Drag (e, i)
4186         , _fixed_grab_x (0.0)
4187         , _fixed_grab_y (0.0)
4188         , _cumulative_x_drag (0.0)
4189         , _cumulative_y_drag (0.0)
4190         , _pushing (false)
4191         , _final_index (0)
4192 {
4193         if (_zero_gain_fraction < 0.0) {
4194                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4195         }
4196
4197         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4198
4199         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4200         assert (_point);
4201 }
4202
4203
4204 void
4205 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4206 {
4207         Drag::start_grab (event, _editor->cursors()->fader);
4208
4209         // start the grab at the center of the control point so
4210         // the point doesn't 'jump' to the mouse after the first drag
4211         _fixed_grab_x = _point->get_x();
4212         _fixed_grab_y = _point->get_y();
4213
4214         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4215         setup_snap_delta (pos);
4216
4217         float const fraction = 1 - (_point->get_y() / _point->line().height());
4218         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4219
4220         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4221
4222         if (!_point->can_slide ()) {
4223                 _x_constrained = true;
4224         }
4225 }
4226
4227 void
4228 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4229 {
4230         double dx = _drags->current_pointer_x() - last_pointer_x();
4231         double dy = current_pointer_y() - last_pointer_y();
4232         bool need_snap = true;
4233
4234         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4235                 dx *= 0.1;
4236                 dy *= 0.1;
4237                 need_snap = false;
4238         }
4239
4240         /* coordinate in pixels relative to the start of the region (for region-based automation)
4241            or track (for track-based automation) */
4242         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4243         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4244
4245         // calculate zero crossing point. back off by .01 to stay on the
4246         // positive side of zero
4247         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4248
4249         if (_x_constrained) {
4250                 cx = _fixed_grab_x;
4251         }
4252         if (_y_constrained) {
4253                 cy = _fixed_grab_y;
4254         }
4255
4256         _cumulative_x_drag = cx - _fixed_grab_x;
4257         _cumulative_y_drag = cy - _fixed_grab_y;
4258
4259         cx = max (0.0, cx);
4260         cy = max (0.0, cy);
4261         cy = min ((double) _point->line().height(), cy);
4262
4263         // make sure we hit zero when passing through
4264         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4265                 cy = zero_gain_y;
4266         }
4267
4268         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4269
4270         if (!_x_constrained && need_snap) {
4271                 _editor->snap_to_with_modifier (cx_frames, event);
4272         }
4273
4274         cx_frames -= snap_delta (event->button.state);
4275         cx_frames = min (cx_frames, _point->line().maximum_time());
4276
4277         float const fraction = 1.0 - (cy / _point->line().height());
4278
4279         if (first_motion) {
4280                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4281                 _editor->begin_reversible_command (_("automation event move"));
4282                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4283         }
4284         pair<double, float> result;
4285         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4286
4287         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4288 }
4289
4290 void
4291 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4292 {
4293         if (!movement_occurred) {
4294
4295                 /* just a click */
4296                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4297                         _editor->reset_point_selection ();
4298                 }
4299
4300         } else {
4301                 _point->line().end_drag (_pushing, _final_index);
4302                 _editor->commit_reversible_command ();
4303         }
4304 }
4305
4306 void
4307 ControlPointDrag::aborted (bool)
4308 {
4309         _point->line().reset ();
4310 }
4311
4312 bool
4313 ControlPointDrag::active (Editing::MouseMode m)
4314 {
4315         if (m == Editing::MouseDraw) {
4316                 /* always active in mouse draw */
4317                 return true;
4318         }
4319
4320         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4321         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4322 }
4323
4324 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4325         : Drag (e, i)
4326         , _line (0)
4327         , _fixed_grab_x (0.0)
4328         , _fixed_grab_y (0.0)
4329         , _cumulative_y_drag (0)
4330         , _before (0)
4331         , _after (0)
4332 {
4333         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4334 }
4335
4336 void
4337 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4338 {
4339         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4340         assert (_line);
4341
4342         _item = &_line->grab_item ();
4343
4344         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4345            origin, and ditto for y.
4346         */
4347
4348         double mx = event->button.x;
4349         double my = event->button.y;
4350
4351         _line->grab_item().canvas_to_item (mx, my);
4352
4353         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4354
4355         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4356                 /* no adjacent points */
4357                 return;
4358         }
4359
4360         Drag::start_grab (event, _editor->cursors()->fader);
4361
4362         /* store grab start in item frame */
4363         double const bx = _line->nth (_before)->get_x();
4364         double const ax = _line->nth (_after)->get_x();
4365         double const click_ratio = (ax - mx) / (ax - bx);
4366
4367         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4368
4369         _fixed_grab_x = mx;
4370         _fixed_grab_y = cy;
4371
4372         double fraction = 1.0 - (cy / _line->height());
4373
4374         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4375 }
4376
4377 void
4378 LineDrag::motion (GdkEvent* event, bool first_move)
4379 {
4380         double dy = current_pointer_y() - last_pointer_y();
4381
4382         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4383                 dy *= 0.1;
4384         }
4385
4386         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4387
4388         _cumulative_y_drag = cy - _fixed_grab_y;
4389
4390         cy = max (0.0, cy);
4391         cy = min ((double) _line->height(), cy);
4392
4393         double const fraction = 1.0 - (cy / _line->height());
4394         uint32_t ignored;
4395
4396         if (first_move) {
4397                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4398
4399                 _editor->begin_reversible_command (_("automation range move"));
4400                 _line->start_drag_line (_before, _after, initial_fraction);
4401         }
4402
4403         /* we are ignoring x position for this drag, so we can just pass in anything */
4404         pair<double, float> result;
4405
4406         result = _line->drag_motion (0, fraction, true, false, ignored);
4407         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4408 }
4409
4410 void
4411 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4412 {
4413         if (movement_occurred) {
4414                 motion (event, false);
4415                 _line->end_drag (false, 0);
4416                 _editor->commit_reversible_command ();
4417         } else {
4418                 /* add a new control point on the line */
4419
4420                 AutomationTimeAxisView* atv;
4421
4422                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4423                         framepos_t where = grab_frame ();
4424
4425                         double cx = 0;
4426                         double cy = _fixed_grab_y;
4427
4428                         _line->grab_item().item_to_canvas (cx, cy);
4429
4430                         atv->add_automation_event (event, where, cy, false);
4431                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4432                         AudioRegionView* arv;
4433
4434                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4435                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4436                         }
4437                 }
4438         }
4439 }
4440
4441 void
4442 LineDrag::aborted (bool)
4443 {
4444         _line->reset ();
4445 }
4446
4447 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4448         : Drag (e, i),
4449           _line (0),
4450           _arv (0),
4451           _region_view_grab_x (0.0),
4452           _cumulative_x_drag (0),
4453           _before (0.0),
4454           _max_x (0)
4455 {
4456         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4457 }
4458
4459 void
4460 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4461 {
4462         Drag::start_grab (event);
4463
4464         _line = reinterpret_cast<Line*> (_item);
4465         assert (_line);
4466
4467         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4468
4469         double cx = event->button.x;
4470         double cy = event->button.y;
4471
4472         _item->parent()->canvas_to_item (cx, cy);
4473
4474         /* store grab start in parent frame */
4475         _region_view_grab_x = cx;
4476
4477         _before = *(float*) _item->get_data ("position");
4478
4479         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4480
4481         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4482 }
4483
4484 void
4485 FeatureLineDrag::motion (GdkEvent*, bool)
4486 {
4487         double dx = _drags->current_pointer_x() - last_pointer_x();
4488
4489         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4490
4491         _cumulative_x_drag += dx;
4492
4493         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4494
4495         if (cx > _max_x){
4496                 cx = _max_x;
4497         }
4498         else if(cx < 0){
4499                 cx = 0;
4500         }
4501
4502         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4503         assert (bbox);
4504         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4505
4506         float *pos = new float;
4507         *pos = cx;
4508
4509         _line->set_data ("position", pos);
4510
4511         _before = cx;
4512 }
4513
4514 void
4515 FeatureLineDrag::finished (GdkEvent*, bool)
4516 {
4517         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4518         _arv->update_transient(_before, _before);
4519 }
4520
4521 void
4522 FeatureLineDrag::aborted (bool)
4523 {
4524         //_line->reset ();
4525 }
4526
4527 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4528         : Drag (e, i)
4529         , _vertical_only (false)
4530 {
4531         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4532 }
4533
4534 void
4535 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4536 {
4537         Drag::start_grab (event);
4538         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4539 }
4540
4541 void
4542 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4543 {
4544         framepos_t start;
4545         framepos_t end;
4546         double y1;
4547         double y2;
4548
4549         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4550
4551         framepos_t grab = grab_frame ();
4552         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4553                 _editor->snap_to_with_modifier (grab, event);
4554         } else {
4555                 grab = raw_grab_frame ();
4556         }
4557
4558         /* base start and end on initial click position */
4559
4560         if (pf < grab) {
4561                 start = pf;
4562                 end = grab;
4563         } else {
4564                 end = pf;
4565                 start = grab;
4566         }
4567
4568         if (current_pointer_y() < grab_y()) {
4569                 y1 = current_pointer_y();
4570                 y2 = grab_y();
4571         } else {
4572                 y2 = current_pointer_y();
4573                 y1 = grab_y();
4574         }
4575
4576         if (start != end || y1 != y2) {
4577
4578                 double x1 = _editor->sample_to_pixel (start);
4579                 double x2 = _editor->sample_to_pixel (end);
4580                 const double min_dimension = 2.0;
4581
4582                 if (_vertical_only) {
4583                         /* fixed 10 pixel width */
4584                         x2 = x1 + 10;
4585                 } else {
4586                         if (x2 < x1) {
4587                                 x2 = min (x1 - min_dimension, x2);
4588                         } else {
4589                                 x2 = max (x1 + min_dimension, x2);
4590                         }
4591                 }
4592
4593                 if (y2 < y1) {
4594                         y2 = min (y1 - min_dimension, y2);
4595                 } else {
4596                         y2 = max (y1 + min_dimension, y2);
4597                 }
4598
4599                 /* translate rect into item space and set */
4600
4601                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4602
4603                 /* this drag is a _trackview_only == true drag, so the y1 and
4604                  * y2 (computed using current_pointer_y() and grab_y()) will be
4605                  * relative to the top of the trackview group). The
4606                  * rubberband rect has the same parent/scroll offset as the
4607                  * the trackview group, so we can use the "r" rect directly
4608                  * to set the shape of the rubberband.
4609                  */
4610
4611                 _editor->rubberband_rect->set (r);
4612                 _editor->rubberband_rect->show();
4613                 _editor->rubberband_rect->raise_to_top();
4614
4615                 show_verbose_cursor_time (pf);
4616
4617                 do_select_things (event, true);
4618         }
4619 }
4620
4621 void
4622 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4623 {
4624         framepos_t x1;
4625         framepos_t x2;
4626         framepos_t grab = grab_frame ();
4627         framepos_t lpf = last_pointer_frame ();
4628
4629         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4630                 grab = raw_grab_frame ();
4631                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4632         }
4633
4634         if (grab < lpf) {
4635                 x1 = grab;
4636                 x2 = lpf;
4637         } else {
4638                 x2 = grab;
4639                 x1 = lpf;
4640         }
4641
4642         double y1;
4643         double y2;
4644
4645         if (current_pointer_y() < grab_y()) {
4646                 y1 = current_pointer_y();
4647                 y2 = grab_y();
4648         } else {
4649                 y2 = current_pointer_y();
4650                 y1 = grab_y();
4651         }
4652
4653         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4654 }
4655
4656 void
4657 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4658 {
4659         if (movement_occurred) {
4660
4661                 motion (event, false);
4662                 do_select_things (event, false);
4663
4664         } else {
4665
4666                 /* just a click */
4667
4668                 bool do_deselect = true;
4669                 MidiTimeAxisView* mtv;
4670
4671                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4672                         /* MIDI track */
4673                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4674                                 /* nothing selected */
4675                                 add_midi_region (mtv, true);
4676                                 do_deselect = false;
4677                         }
4678                 }
4679
4680                 /* do not deselect if Primary or Tertiary (toggle-select or
4681                  * extend-select are pressed.
4682                  */
4683
4684                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4685                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4686                     do_deselect) {
4687                         deselect_things ();
4688                 }
4689
4690         }
4691
4692         _editor->rubberband_rect->hide();
4693 }
4694
4695 void
4696 RubberbandSelectDrag::aborted (bool)
4697 {
4698         _editor->rubberband_rect->hide ();
4699 }
4700
4701 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4702         : RegionDrag (e, i, p, v)
4703 {
4704         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4705 }
4706
4707 void
4708 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4709 {
4710         Drag::start_grab (event, cursor);
4711
4712         _editor->get_selection().add (_primary);
4713
4714         framepos_t where = _primary->region()->position();
4715         setup_snap_delta (where);
4716
4717         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4718 }
4719
4720 void
4721 TimeFXDrag::motion (GdkEvent* event, bool)
4722 {
4723         RegionView* rv = _primary;
4724         StreamView* cv = rv->get_time_axis_view().view ();
4725
4726         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4727         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4728         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4729         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4730         _editor->snap_to_with_modifier (pf, event);
4731         pf -= snap_delta (event->button.state);
4732
4733         if (pf > rv->region()->position()) {
4734                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4735         }
4736
4737         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4738 }
4739
4740 void
4741 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4742 {
4743         /* this may have been a single click, no drag. We still want the dialog
4744            to show up in that case, so that the user can manually edit the
4745            parameters for the timestretch.
4746         */
4747
4748         float fraction = 1.0;
4749
4750         if (movement_occurred) {
4751
4752                 motion (event, false);
4753
4754                 _primary->get_time_axis_view().hide_timestretch ();
4755
4756                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4757
4758                 if (adjusted_frame_pos < _primary->region()->position()) {
4759                         /* backwards drag of the left edge - not usable */
4760                         return;
4761                 }
4762
4763                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4764
4765                 fraction = (double) newlen / (double) _primary->region()->length();
4766
4767 #ifndef USE_RUBBERBAND
4768                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4769                 if (_primary->region()->data_type() == DataType::AUDIO) {
4770                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4771                 }
4772 #endif
4773         }
4774
4775         if (!_editor->get_selection().regions.empty()) {
4776                 /* primary will already be included in the selection, and edit
4777                    group shared editing will propagate selection across
4778                    equivalent regions, so just use the current region
4779                    selection.
4780                 */
4781
4782                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4783                         error << _("An error occurred while executing time stretch operation") << endmsg;
4784                 }
4785         }
4786 }
4787
4788 void
4789 TimeFXDrag::aborted (bool)
4790 {
4791         _primary->get_time_axis_view().hide_timestretch ();
4792 }
4793
4794 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4795         : Drag (e, i)
4796 {
4797         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4798 }
4799
4800 void
4801 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4802 {
4803         Drag::start_grab (event);
4804 }
4805
4806 void
4807 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4808 {
4809         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4810 }
4811
4812 void
4813 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4814 {
4815         if (movement_occurred && _editor->session()) {
4816                 /* make sure we stop */
4817                 _editor->session()->request_transport_speed (0.0);
4818         }
4819 }
4820
4821 void
4822 ScrubDrag::aborted (bool)
4823 {
4824         /* XXX: TODO */
4825 }
4826
4827 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4828         : Drag (e, i)
4829         , _operation (o)
4830         , _add (false)
4831         , _time_selection_at_start (!_editor->get_selection().time.empty())
4832 {
4833         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4834
4835         if (_time_selection_at_start) {
4836                 start_at_start = _editor->get_selection().time.start();
4837                 end_at_start = _editor->get_selection().time.end_frame();
4838         }
4839 }
4840
4841 void
4842 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4843 {
4844         if (_editor->session() == 0) {
4845                 return;
4846         }
4847
4848         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4849
4850         switch (_operation) {
4851         case CreateSelection:
4852                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4853                         _add = true;
4854                 } else {
4855                         _add = false;
4856                 }
4857                 cursor = _editor->cursors()->selector;
4858                 Drag::start_grab (event, cursor);
4859                 break;
4860
4861         case SelectionStartTrim:
4862                 if (_editor->clicked_axisview) {
4863                         _editor->clicked_axisview->order_selection_trims (_item, true);
4864                 }
4865                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4866                 break;
4867
4868         case SelectionEndTrim:
4869                 if (_editor->clicked_axisview) {
4870                         _editor->clicked_axisview->order_selection_trims (_item, false);
4871                 }
4872                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4873                 break;
4874
4875         case SelectionMove:
4876                 Drag::start_grab (event, cursor);
4877                 break;
4878
4879         case SelectionExtend:
4880                 Drag::start_grab (event, cursor);
4881                 break;
4882         }
4883
4884         if (_operation == SelectionMove) {
4885                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4886         } else {
4887                 show_verbose_cursor_time (adjusted_current_frame (event));
4888         }
4889 }
4890
4891 void
4892 SelectionDrag::setup_pointer_frame_offset ()
4893 {
4894         switch (_operation) {
4895         case CreateSelection:
4896                 _pointer_frame_offset = 0;
4897                 break;
4898
4899         case SelectionStartTrim:
4900         case SelectionMove:
4901                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4902                 break;
4903
4904         case SelectionEndTrim:
4905                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4906                 break;
4907
4908         case SelectionExtend:
4909                 break;
4910         }
4911 }
4912
4913 void
4914 SelectionDrag::motion (GdkEvent* event, bool first_move)
4915 {
4916         framepos_t start = 0;
4917         framepos_t end = 0;
4918         framecnt_t length = 0;
4919         framecnt_t distance = 0;
4920
4921         framepos_t const pending_position = adjusted_current_frame (event);
4922
4923         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4924                 return;
4925         }
4926
4927         switch (_operation) {
4928         case CreateSelection:
4929         {
4930                 framepos_t grab = grab_frame ();
4931
4932                 if (first_move) {
4933                         grab = adjusted_current_frame (event, false);
4934                         if (grab < pending_position) {
4935                                 _editor->snap_to (grab, RoundDownMaybe);
4936                         }  else {
4937                                 _editor->snap_to (grab, RoundUpMaybe);
4938                         }
4939                 }
4940
4941                 if (pending_position < grab) {
4942                         start = pending_position;
4943                         end = grab;
4944                 } else {
4945                         end = pending_position;
4946                         start = grab;
4947                 }
4948
4949                 /* first drag: Either add to the selection
4950                    or create a new selection
4951                 */
4952
4953                 if (first_move) {
4954
4955                         if (_add) {
4956
4957                                 /* adding to the selection */
4958                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4959                                 _editor->clicked_selection = _editor->selection->add (start, end);
4960                                 _add = false;
4961
4962                         } else {
4963
4964                                 /* new selection */
4965
4966                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4967                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4968                                 }
4969
4970                                 _editor->clicked_selection = _editor->selection->set (start, end);
4971                         }
4972                 }
4973
4974                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4975                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4976                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4977                 if (atest) {
4978                         _editor->selection->add (atest);
4979                         break;
4980                 }
4981
4982                 /* select all tracks within the rectangle that we've marked out so far */
4983                 TrackViewList new_selection;
4984                 TrackViewList& all_tracks (_editor->track_views);
4985
4986                 ArdourCanvas::Coord const top = grab_y();
4987                 ArdourCanvas::Coord const bottom = current_pointer_y();
4988
4989                 if (top >= 0 && bottom >= 0) {
4990
4991                         //first, find the tracks that are covered in the y range selection
4992                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4993                                 if ((*i)->covered_by_y_range (top, bottom)) {
4994                                         new_selection.push_back (*i);
4995                                 }
4996                         }
4997
4998                         //now find any tracks that are GROUPED with the tracks we selected
4999                         TrackViewList grouped_add = new_selection;
5000                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5001                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5002                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5003                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5004                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5005                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5006                                                         grouped_add.push_back (*j);
5007                                         }
5008                                 }
5009                         }
5010
5011                         //now compare our list with the current selection, and add or remove as necessary
5012                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5013                         TrackViewList tracks_to_add;
5014                         TrackViewList tracks_to_remove;
5015                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5016                                 if ( !_editor->selection->tracks.contains ( *i ) )
5017                                         tracks_to_add.push_back ( *i );
5018                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5019                                 if ( !grouped_add.contains ( *i ) )
5020                                         tracks_to_remove.push_back ( *i );
5021                         _editor->selection->add(tracks_to_add);
5022                         _editor->selection->remove(tracks_to_remove);
5023
5024                 }
5025         }
5026         break;
5027
5028         case SelectionStartTrim:
5029
5030                 end = _editor->selection->time[_editor->clicked_selection].end;
5031
5032                 if (pending_position > end) {
5033                         start = end;
5034                 } else {
5035                         start = pending_position;
5036                 }
5037                 break;
5038
5039         case SelectionEndTrim:
5040
5041                 start = _editor->selection->time[_editor->clicked_selection].start;
5042
5043                 if (pending_position < start) {
5044                         end = start;
5045                 } else {
5046                         end = pending_position;
5047                 }
5048
5049                 break;
5050
5051         case SelectionMove:
5052
5053                 start = _editor->selection->time[_editor->clicked_selection].start;
5054                 end = _editor->selection->time[_editor->clicked_selection].end;
5055
5056                 length = end - start;
5057                 distance = pending_position - start;
5058                 start = pending_position;
5059                 _editor->snap_to (start);
5060
5061                 end = start + length;
5062
5063                 break;
5064
5065         case SelectionExtend:
5066                 break;
5067         }
5068
5069         if (start != end) {
5070                 switch (_operation) {
5071                 case SelectionMove:
5072                         if (_time_selection_at_start) {
5073                                 _editor->selection->move_time (distance);
5074                         }
5075                         break;
5076                 default:
5077                         _editor->selection->replace (_editor->clicked_selection, start, end);
5078                 }
5079         }
5080
5081         if (_operation == SelectionMove) {
5082                 show_verbose_cursor_time(start);
5083         } else {
5084                 show_verbose_cursor_time(pending_position);
5085         }
5086 }
5087
5088 void
5089 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5090 {
5091         Session* s = _editor->session();
5092
5093         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5094         if (movement_occurred) {
5095                 motion (event, false);
5096                 /* XXX this is not object-oriented programming at all. ick */
5097                 if (_editor->selection->time.consolidate()) {
5098                         _editor->selection->TimeChanged ();
5099                 }
5100
5101                 /* XXX what if its a music time selection? */
5102                 if (s) {
5103                         if (s->get_play_range() && s->transport_rolling()) {
5104                                 s->request_play_range (&_editor->selection->time, true);
5105                         } else if (!s->config.get_external_sync()) {
5106                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5107                                         if (_operation == SelectionEndTrim)
5108                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5109                                         else
5110                                                 s->request_locate (_editor->get_selection().time.start());
5111                                 }
5112                         }
5113
5114                         if (_editor->get_selection().time.length() != 0) {
5115                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5116                         } else {
5117                                 s->clear_range_selection ();
5118                         }
5119                 }
5120
5121         } else {
5122                 /* just a click, no pointer movement.
5123                  */
5124
5125                 if (_operation == SelectionExtend) {
5126                         if (_time_selection_at_start) {
5127                                 framepos_t pos = adjusted_current_frame (event, false);
5128                                 framepos_t start = min (pos, start_at_start);
5129                                 framepos_t end = max (pos, end_at_start);
5130                                 _editor->selection->set (start, end);
5131                         }
5132                 } else {
5133                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5134                                 if (_editor->clicked_selection) {
5135                                         _editor->selection->remove (_editor->clicked_selection);
5136                                 }
5137                         } else {
5138                                 if (!_editor->clicked_selection) {
5139                                         _editor->selection->clear_time();
5140                                 }
5141                         }
5142                 }
5143
5144                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5145                         _editor->selection->set (_editor->clicked_axisview);
5146                 }
5147
5148                 if (s && s->get_play_range () && s->transport_rolling()) {
5149                         s->request_stop (false, false);
5150                 }
5151
5152         }
5153
5154         _editor->stop_canvas_autoscroll ();
5155         _editor->clicked_selection = 0;
5156         _editor->commit_reversible_selection_op ();
5157 }
5158
5159 void
5160 SelectionDrag::aborted (bool)
5161 {
5162         /* XXX: TODO */
5163 }
5164
5165 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5166         : Drag (e, i, false),
5167           _operation (o),
5168           _copy (false)
5169 {
5170         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5171
5172         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5173                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5174                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5175         _drag_rect->hide ();
5176
5177         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5178         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5179 }
5180
5181 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5182 {
5183         /* normal canvas items will be cleaned up when their parent group is deleted. But
5184            this item is created as the child of a long-lived parent group, and so we
5185            need to explicitly delete it.
5186         */
5187         delete _drag_rect;
5188 }
5189
5190 void
5191 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5192 {
5193         if (_editor->session() == 0) {
5194                 return;
5195         }
5196
5197         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5198
5199         if (!_editor->temp_location) {
5200                 _editor->temp_location = new Location (*_editor->session());
5201         }
5202
5203         switch (_operation) {
5204         case CreateSkipMarker:
5205         case CreateRangeMarker:
5206         case CreateTransportMarker:
5207         case CreateCDMarker:
5208
5209                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5210                         _copy = true;
5211                 } else {
5212                         _copy = false;
5213                 }
5214                 cursor = _editor->cursors()->selector;
5215                 break;
5216         }
5217
5218         Drag::start_grab (event, cursor);
5219
5220         show_verbose_cursor_time (adjusted_current_frame (event));
5221 }
5222
5223 void
5224 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5225 {
5226         framepos_t start = 0;
5227         framepos_t end = 0;
5228         ArdourCanvas::Rectangle *crect;
5229
5230         switch (_operation) {
5231         case CreateSkipMarker:
5232                 crect = _editor->range_bar_drag_rect;
5233                 break;
5234         case CreateRangeMarker:
5235                 crect = _editor->range_bar_drag_rect;
5236                 break;
5237         case CreateTransportMarker:
5238                 crect = _editor->transport_bar_drag_rect;
5239                 break;
5240         case CreateCDMarker:
5241                 crect = _editor->cd_marker_bar_drag_rect;
5242                 break;
5243         default:
5244                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5245                 return;
5246                 break;
5247         }
5248
5249         framepos_t const pf = adjusted_current_frame (event);
5250
5251         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5252                 framepos_t grab = grab_frame ();
5253                 _editor->snap_to (grab);
5254
5255                 if (pf < grab_frame()) {
5256                         start = pf;
5257                         end = grab;
5258                 } else {
5259                         end = pf;
5260                         start = grab;
5261                 }
5262
5263                 /* first drag: Either add to the selection
5264                    or create a new selection.
5265                 */
5266
5267                 if (first_move) {
5268
5269                         _editor->temp_location->set (start, end);
5270
5271                         crect->show ();
5272
5273                         update_item (_editor->temp_location);
5274                         _drag_rect->show();
5275                         //_drag_rect->raise_to_top();
5276
5277                 }
5278         }
5279
5280         if (start != end) {
5281                 _editor->temp_location->set (start, end);
5282
5283                 double x1 = _editor->sample_to_pixel (start);
5284                 double x2 = _editor->sample_to_pixel (end);
5285                 crect->set_x0 (x1);
5286                 crect->set_x1 (x2);
5287
5288                 update_item (_editor->temp_location);
5289         }
5290
5291         show_verbose_cursor_time (pf);
5292
5293 }
5294
5295 void
5296 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5297 {
5298         Location * newloc = 0;
5299         string rangename;
5300         int flags;
5301
5302         if (movement_occurred) {
5303                 motion (event, false);
5304                 _drag_rect->hide();
5305
5306                 switch (_operation) {
5307                 case CreateSkipMarker:
5308                 case CreateRangeMarker:
5309                 case CreateCDMarker:
5310                     {
5311                         XMLNode &before = _editor->session()->locations()->get_state();
5312                         if (_operation == CreateSkipMarker) {
5313                                 _editor->begin_reversible_command (_("new skip marker"));
5314                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5315                                 flags = Location::IsRangeMarker | Location::IsSkip;
5316                                 _editor->range_bar_drag_rect->hide();
5317                         } else if (_operation == CreateCDMarker) {
5318                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5319                                 _editor->begin_reversible_command (_("new CD marker"));
5320                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5321                                 _editor->cd_marker_bar_drag_rect->hide();
5322                         } else {
5323                                 _editor->begin_reversible_command (_("new skip marker"));
5324                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5325                                 flags = Location::IsRangeMarker;
5326                                 _editor->range_bar_drag_rect->hide();
5327                         }
5328                         newloc = new Location (
5329                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5330                                 );
5331
5332                         _editor->session()->locations()->add (newloc, true);
5333                         XMLNode &after = _editor->session()->locations()->get_state();
5334                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5335                         _editor->commit_reversible_command ();
5336                         break;
5337                     }
5338
5339                 case CreateTransportMarker:
5340                         // popup menu to pick loop or punch
5341                         _editor->new_transport_marker_context_menu (&event->button, _item);
5342                         break;
5343                 }
5344
5345         } else {
5346
5347                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5348
5349                 if (_operation == CreateTransportMarker) {
5350
5351                         /* didn't drag, so just locate */
5352
5353                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5354
5355                 } else if (_operation == CreateCDMarker) {
5356
5357                         /* didn't drag, but mark is already created so do
5358                          * nothing */
5359
5360                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5361
5362                         framepos_t start;
5363                         framepos_t end;
5364
5365                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5366
5367                         if (end == max_framepos) {
5368                                 end = _editor->session()->current_end_frame ();
5369                         }
5370
5371                         if (start == max_framepos) {
5372                                 start = _editor->session()->current_start_frame ();
5373                         }
5374
5375                         switch (_editor->mouse_mode) {
5376                         case MouseObject:
5377                                 /* find the two markers on either side and then make the selection from it */
5378                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5379                                 break;
5380
5381                         case MouseRange:
5382                                 /* find the two markers on either side of the click and make the range out of it */
5383                                 _editor->selection->set (start, end);
5384                                 break;
5385
5386                         default:
5387                                 break;
5388                         }
5389                 }
5390         }
5391
5392         _editor->stop_canvas_autoscroll ();
5393 }
5394
5395 void
5396 RangeMarkerBarDrag::aborted (bool movement_occurred)
5397 {
5398         if (movement_occurred) {
5399                 _drag_rect->hide ();
5400         }
5401 }
5402
5403 void
5404 RangeMarkerBarDrag::update_item (Location* location)
5405 {
5406         double const x1 = _editor->sample_to_pixel (location->start());
5407         double const x2 = _editor->sample_to_pixel (location->end());
5408
5409         _drag_rect->set_x0 (x1);
5410         _drag_rect->set_x1 (x2);
5411 }
5412
5413 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5414         : Drag (e, i)
5415         , _cumulative_dx (0)
5416         , _cumulative_dy (0)
5417         , _was_selected (false)
5418 {
5419         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5420
5421         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5422         assert (_primary);
5423         _region = &_primary->region_view ();
5424         _note_height = _region->midi_stream_view()->note_height ();
5425 }
5426
5427 void
5428 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5429 {
5430         Drag::start_grab (event);
5431         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5432
5433         if (!(_was_selected = _primary->selected())) {
5434
5435                 /* tertiary-click means extend selection - we'll do that on button release,
5436                    so don't add it here, because otherwise we make it hard to figure
5437                    out the "extend-to" range.
5438                 */
5439
5440                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5441
5442                 if (!extend) {
5443                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5444
5445                         if (add) {
5446                                 _region->note_selected (_primary, true);
5447                         } else {
5448                                 _editor->get_selection().clear_points();
5449                                 _region->unique_select (_primary);
5450                         }
5451                 }
5452         }
5453 }
5454
5455 /** @return Current total drag x change in frames */
5456 frameoffset_t
5457 NoteDrag::total_dx (const guint state) const
5458 {
5459         /* dx in frames */
5460         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5461
5462         /* primary note time */
5463         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5464
5465         /* new time of the primary note in session frames */
5466         frameoffset_t st = n + dx + snap_delta (state);
5467
5468         framepos_t const rp = _region->region()->position ();
5469
5470         /* prevent the note being dragged earlier than the region's position */
5471         st = max (st, rp);
5472
5473         /* possibly snap and return corresponding delta */
5474
5475         bool snap = true;
5476
5477         if (ArdourKeyboard::indicates_snap (state)) {
5478                 if (_editor->snap_mode () != SnapOff) {
5479                         snap = false;
5480                 }
5481         } else {
5482                 if (_editor->snap_mode () == SnapOff) {
5483                         snap = false;
5484                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5485                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5486                                 snap = true;
5487                         }
5488                 }
5489         }
5490
5491         frameoffset_t ret;
5492         if (snap) {
5493                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5494                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5495         } else {
5496                 ret = st - n - snap_delta (state);
5497         }
5498         return ret;
5499 }
5500
5501 /** @return Current total drag y change in note number */
5502 int8_t
5503 NoteDrag::total_dy () const
5504 {
5505         MidiStreamView* msv = _region->midi_stream_view ();
5506         double const y = _region->midi_view()->y_position ();
5507         /* new current note */
5508         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5509         /* clamp */
5510         n = max (msv->lowest_note(), n);
5511         n = min (msv->highest_note(), n);
5512         /* and work out delta */
5513         return n - msv->y_to_note (grab_y() - y);
5514 }
5515
5516 void
5517 NoteDrag::motion (GdkEvent * event, bool)
5518 {
5519         /* Total change in x and y since the start of the drag */
5520         frameoffset_t const dx = total_dx (event->button.state);
5521         int8_t const dy = total_dy ();
5522
5523         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5524         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5525         double const tdy = -dy * _note_height - _cumulative_dy;
5526
5527         if (tdx || tdy) {
5528                 _cumulative_dx += tdx;
5529                 _cumulative_dy += tdy;
5530
5531                 int8_t note_delta = total_dy();
5532
5533                 _region->move_selection (tdx, tdy, note_delta);
5534
5535                 /* the new note value may be the same as the old one, but we
5536                  * don't know what that means because the selection may have
5537                  * involved more than one note and we might be doing something
5538                  * odd with them. so show the note value anyway, always.
5539                  */
5540
5541                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5542
5543                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5544         }
5545 }
5546
5547 void
5548 NoteDrag::finished (GdkEvent* ev, bool moved)
5549 {
5550         if (!moved) {
5551                 /* no motion - select note */
5552
5553                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5554                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5555
5556                         bool changed = false;
5557
5558                         if (_was_selected) {
5559                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5560                                 if (add) {
5561                                         _region->note_deselected (_primary);
5562                                         changed = true;
5563                                 } else {
5564                                         _editor->get_selection().clear_points();
5565                                         _region->unique_select (_primary);
5566                                         changed = true;
5567                                 }
5568                         } else {
5569                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5570                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5571
5572                                 if (!extend && !add && _region->selection_size() > 1) {
5573                                         _editor->get_selection().clear_points();
5574                                         _region->unique_select (_primary);
5575                                         changed = true;
5576                                 } else if (extend) {
5577                                         _region->note_selected (_primary, true, true);
5578                                         changed = true;
5579                                 } else {
5580                                         /* it was added during button press */
5581                                         changed = true;
5582
5583                                 }
5584                         }
5585
5586                         if (changed) {
5587                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5588                                 _editor->commit_reversible_selection_op();
5589                         }
5590                 }
5591         } else {
5592                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5593         }
5594 }
5595
5596 void
5597 NoteDrag::aborted (bool)
5598 {
5599         /* XXX: TODO */
5600 }
5601
5602 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5603 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5604         : Drag (editor, atv->base_item ())
5605         , _ranges (r)
5606         , _y_origin (atv->y_position())
5607         , _nothing_to_drag (false)
5608 {
5609         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5610         setup (atv->lines ());
5611 }
5612
5613 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5614 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5615         : Drag (editor, rv->get_canvas_group ())
5616         , _ranges (r)
5617         , _y_origin (rv->get_time_axis_view().y_position())
5618         , _nothing_to_drag (false)
5619         , _integral (false)
5620 {
5621         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5622
5623         list<boost::shared_ptr<AutomationLine> > lines;
5624
5625         AudioRegionView*      audio_view;
5626         AutomationRegionView* automation_view;
5627         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5628                 lines.push_back (audio_view->get_gain_line ());
5629         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5630                 lines.push_back (automation_view->line ());
5631                 _integral = true;
5632         } else {
5633                 error << _("Automation range drag created for invalid region type") << endmsg;
5634         }
5635
5636         setup (lines);
5637 }
5638
5639 /** @param lines AutomationLines to drag.
5640  *  @param offset Offset from the session start to the points in the AutomationLines.
5641  */
5642 void
5643 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5644 {
5645         /* find the lines that overlap the ranges being dragged */
5646         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5647         while (i != lines.end ()) {
5648                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5649                 ++j;
5650
5651                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5652
5653                 /* check this range against all the AudioRanges that we are using */
5654                 list<AudioRange>::const_iterator k = _ranges.begin ();
5655                 while (k != _ranges.end()) {
5656                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5657                                 break;
5658                         }
5659                         ++k;
5660                 }
5661
5662                 /* add it to our list if it overlaps at all */
5663                 if (k != _ranges.end()) {
5664                         Line n;
5665                         n.line = *i;
5666                         n.state = 0;
5667                         n.range = r;
5668                         _lines.push_back (n);
5669                 }
5670
5671                 i = j;
5672         }
5673
5674         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5675 }
5676
5677 double
5678 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5679 {
5680         return 1.0 - ((global_y - _y_origin) / line->height());
5681 }
5682
5683 double
5684 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5685 {
5686         const double v = list->eval(x);
5687         return _integral ? rint(v) : v;
5688 }
5689
5690 void
5691 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5692 {
5693         Drag::start_grab (event, cursor);
5694
5695         /* Get line states before we start changing things */
5696         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5697                 i->state = &i->line->get_state ();
5698                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5699         }
5700
5701         if (_ranges.empty()) {
5702
5703                 /* No selected time ranges: drag all points */
5704                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5705                         uint32_t const N = i->line->npoints ();
5706                         for (uint32_t j = 0; j < N; ++j) {
5707                                 i->points.push_back (i->line->nth (j));
5708                         }
5709                 }
5710
5711         }
5712
5713         if (_nothing_to_drag) {
5714                 return;
5715         }
5716 }
5717
5718 void
5719 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5720 {
5721         if (_nothing_to_drag && !first_move) {
5722                 return;
5723         }
5724
5725         if (first_move) {
5726                 _editor->begin_reversible_command (_("automation range move"));
5727
5728                 if (!_ranges.empty()) {
5729
5730                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5731
5732                                 framecnt_t const half = (i->start + i->end) / 2;
5733
5734                                 /* find the line that this audio range starts in */
5735                                 list<Line>::iterator j = _lines.begin();
5736                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5737                                         ++j;
5738                                 }
5739
5740                                 if (j != _lines.end()) {
5741                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5742
5743                                 /* j is the line that this audio range starts in; fade into it;
5744                                    64 samples length plucked out of thin air.
5745                                 */
5746
5747                                         framepos_t a = i->start + 64;
5748                                         if (a > half) {
5749                                                 a = half;
5750                                         }
5751
5752                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5753                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5754
5755                                         XMLNode &before = the_list->get_state();
5756                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5757                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5758
5759                                         if (add_p || add_q) {
5760                                                 _editor->session()->add_command (
5761                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5762                                         }
5763                                 }
5764
5765                                 /* same thing for the end */
5766
5767                                 j = _lines.begin();
5768                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5769                                         ++j;
5770                                 }
5771
5772                                 if (j != _lines.end()) {
5773                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5774
5775                                         /* j is the line that this audio range starts in; fade out of it;
5776                                            64 samples length plucked out of thin air.
5777                                         */
5778
5779                                         framepos_t b = i->end - 64;
5780                                         if (b < half) {
5781                                                 b = half;
5782                                         }
5783
5784                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5785                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5786
5787                                         XMLNode &before = the_list->get_state();
5788                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5789                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5790
5791                                         if (add_p || add_q) {
5792                                                 _editor->session()->add_command (
5793                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5794                                         }
5795                                 }
5796                         }
5797
5798                         _nothing_to_drag = true;
5799
5800                         /* Find all the points that should be dragged and put them in the relevant
5801                            points lists in the Line structs.
5802                         */
5803
5804                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5805
5806                                 uint32_t const N = i->line->npoints ();
5807                                 for (uint32_t j = 0; j < N; ++j) {
5808
5809                                         /* here's a control point on this line */
5810                                         ControlPoint* p = i->line->nth (j);
5811                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5812
5813                                         /* see if it's inside a range */
5814                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5815                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5816                                                 ++k;
5817                                         }
5818
5819                                         if (k != _ranges.end()) {
5820                                                 /* dragging this point */
5821                                                 _nothing_to_drag = false;
5822                                                 i->points.push_back (p);
5823                                         }
5824                                 }
5825                         }
5826                 }
5827
5828                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5829                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5830                 }
5831         }
5832
5833         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5834                 float const f = y_fraction (l->line, current_pointer_y());
5835                 /* we are ignoring x position for this drag, so we can just pass in anything */
5836                 pair<double, float> result;
5837                 uint32_t ignored;
5838                 result = l->line->drag_motion (0, f, true, false, ignored);
5839                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5840         }
5841 }
5842
5843 void
5844 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5845 {
5846         if (_nothing_to_drag || !motion_occurred) {
5847                 return;
5848         }
5849
5850         motion (event, false);
5851         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5852                 i->line->end_drag (false, 0);
5853         }
5854
5855         _editor->commit_reversible_command ();
5856 }
5857
5858 void
5859 AutomationRangeDrag::aborted (bool)
5860 {
5861         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5862                 i->line->reset ();
5863         }
5864 }
5865
5866 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5867         : view (v)
5868         , initial_time_axis_view (itav)
5869 {
5870         /* note that time_axis_view may be null if the regionview was created
5871          * as part of a copy operation.
5872          */
5873         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5874         layer = v->region()->layer ();
5875         initial_y = v->get_canvas_group()->position().y;
5876         initial_playlist = v->region()->playlist ();
5877         initial_position = v->region()->position ();
5878         initial_end = v->region()->position () + v->region()->length ();
5879 }
5880
5881 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5882         : Drag (e, i->canvas_item ())
5883         , _region_view (r)
5884         , _patch_change (i)
5885         , _cumulative_dx (0)
5886 {
5887         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5888                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5889                                                    grab_frame()));
5890 }
5891
5892 void
5893 PatchChangeDrag::motion (GdkEvent* ev, bool)
5894 {
5895         framepos_t f = adjusted_current_frame (ev);
5896         boost::shared_ptr<Region> r = _region_view->region ();
5897         f = max (f, r->position ());
5898         f = min (f, r->last_frame ());
5899
5900         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5901         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5902         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5903         _cumulative_dx = dxu;
5904 }
5905
5906 void
5907 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5908 {
5909         if (!movement_occurred) {
5910                 return;
5911         }
5912
5913         boost::shared_ptr<Region> r (_region_view->region ());
5914         framepos_t f = adjusted_current_frame (ev);
5915         f = max (f, r->position ());
5916         f = min (f, r->last_frame ());
5917
5918         _region_view->move_patch_change (
5919                 *_patch_change,
5920                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5921                 );
5922 }
5923
5924 void
5925 PatchChangeDrag::aborted (bool)
5926 {
5927         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5928 }
5929
5930 void
5931 PatchChangeDrag::setup_pointer_frame_offset ()
5932 {
5933         boost::shared_ptr<Region> region = _region_view->region ();
5934         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5935 }
5936
5937 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5938         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5939         , _region_view (rv)
5940 {
5941
5942 }
5943
5944 void
5945 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5946 {
5947         _region_view->update_drag_selection (
5948                 x1, x2, y1, y2,
5949                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5950 }
5951
5952 void
5953 MidiRubberbandSelectDrag::deselect_things ()
5954 {
5955         /* XXX */
5956 }
5957
5958 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5959         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5960         , _region_view (rv)
5961 {
5962         _vertical_only = true;
5963 }
5964
5965 void
5966 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5967 {
5968         double const y = _region_view->midi_view()->y_position ();
5969
5970         y1 = max (0.0, y1 - y);
5971         y2 = max (0.0, y2 - y);
5972
5973         _region_view->update_vertical_drag_selection (
5974                 y1,
5975                 y2,
5976                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5977                 );
5978 }
5979
5980 void
5981 MidiVerticalSelectDrag::deselect_things ()
5982 {
5983         /* XXX */
5984 }
5985
5986 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5987         : RubberbandSelectDrag (e, i)
5988 {
5989
5990 }
5991
5992 void
5993 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5994 {
5995         if (drag_in_progress) {
5996                 /* We just want to select things at the end of the drag, not during it */
5997                 return;
5998         }
5999
6000         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6001
6002         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6003
6004         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6005
6006         _editor->commit_reversible_selection_op ();
6007 }
6008
6009 void
6010 EditorRubberbandSelectDrag::deselect_things ()
6011 {
6012         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6013
6014         _editor->selection->clear_tracks();
6015         _editor->selection->clear_regions();
6016         _editor->selection->clear_points ();
6017         _editor->selection->clear_lines ();
6018         _editor->selection->clear_midi_notes ();
6019
6020         _editor->commit_reversible_selection_op();
6021 }
6022
6023 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6024         : Drag (e, i)
6025         , _region_view (rv)
6026         , _drag_rect (0)
6027 {
6028         _note[0] = _note[1] = 0;
6029 }
6030
6031 NoteCreateDrag::~NoteCreateDrag ()
6032 {
6033         delete _drag_rect;
6034 }
6035
6036 framecnt_t
6037 NoteCreateDrag::grid_frames (framepos_t t) const
6038 {
6039         bool success;
6040         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6041         if (!success) {
6042                 grid_beats = Evoral::Beats(1);
6043         }
6044
6045         return _region_view->region_beats_to_region_frames (grid_beats);
6046 }
6047
6048 void
6049 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6050 {
6051         Drag::start_grab (event, cursor);
6052
6053         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6054
6055         framepos_t pf = _drags->current_pointer_frame ();
6056         framecnt_t const g = grid_frames (pf);
6057
6058         /* Hack so that we always snap to the note that we are over, instead of snapping
6059            to the next one if we're more than halfway through the one we're over.
6060         */
6061         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6062                 pf -= g / 2;
6063         }
6064
6065         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6066         _note[1] = _note[0];
6067
6068         MidiStreamView* sv = _region_view->midi_stream_view ();
6069         double const x = _editor->sample_to_pixel (_note[0]);
6070         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6071
6072         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6073         _drag_rect->set_outline_all ();
6074         _drag_rect->set_outline_color (0xffffff99);
6075         _drag_rect->set_fill_color (0xffffff66);
6076 }
6077
6078 void
6079 NoteCreateDrag::motion (GdkEvent* event, bool)
6080 {
6081         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6082         double const x0 = _editor->sample_to_pixel (_note[0]);
6083         double const x1 = _editor->sample_to_pixel (_note[1]);
6084         _drag_rect->set_x0 (std::min(x0, x1));
6085         _drag_rect->set_x1 (std::max(x0, x1));
6086 }
6087
6088 void
6089 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6090 {
6091         if (!had_movement) {
6092                 return;
6093         }
6094
6095         framepos_t const start = min (_note[0], _note[1]);
6096         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6097
6098         framecnt_t const g = grid_frames (start);
6099         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6100
6101         if (_editor->snap_mode() == SnapNormal && length < g) {
6102                 length = g;
6103         }
6104
6105         Evoral::Beats length_beats = max (
6106                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6107
6108         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6109 }
6110
6111 double
6112 NoteCreateDrag::y_to_region (double y) const
6113 {
6114         double x = 0;
6115         _region_view->get_canvas_group()->canvas_to_item (x, y);
6116         return y;
6117 }
6118
6119 void
6120 NoteCreateDrag::aborted (bool)
6121 {
6122
6123 }
6124
6125 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6126         : Drag (e, i)
6127         , arv (rv)
6128         , start (start_yn)
6129 {
6130         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6131 }
6132
6133 void
6134 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6135 {
6136         Drag::start_grab (event, cursor);
6137 }
6138
6139 void
6140 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6141 {
6142         double distance;
6143         double new_length;
6144         framecnt_t len;
6145
6146         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6147
6148         if (start) {
6149                 distance = _drags->current_pointer_x() - grab_x();
6150                 len = ar->fade_in()->back()->when;
6151         } else {
6152                 distance = grab_x() - _drags->current_pointer_x();
6153                 len = ar->fade_out()->back()->when;
6154         }
6155
6156         /* how long should it be ? */
6157
6158         new_length = len + _editor->pixel_to_sample (distance);
6159
6160         /* now check with the region that this is legal */
6161
6162         new_length = ar->verify_xfade_bounds (new_length, start);
6163
6164         if (start) {
6165                 arv->reset_fade_in_shape_width (ar, new_length);
6166         } else {
6167                 arv->reset_fade_out_shape_width (ar, new_length);
6168         }
6169 }
6170
6171 void
6172 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6173 {
6174         double distance;
6175         double new_length;
6176         framecnt_t len;
6177
6178         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6179
6180         if (start) {
6181                 distance = _drags->current_pointer_x() - grab_x();
6182                 len = ar->fade_in()->back()->when;
6183         } else {
6184                 distance = grab_x() - _drags->current_pointer_x();
6185                 len = ar->fade_out()->back()->when;
6186         }
6187
6188         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6189
6190         _editor->begin_reversible_command ("xfade trim");
6191         ar->playlist()->clear_owned_changes ();
6192
6193         if (start) {
6194                 ar->set_fade_in_length (new_length);
6195         } else {
6196                 ar->set_fade_out_length (new_length);
6197         }
6198
6199         /* Adjusting the xfade may affect other regions in the playlist, so we need
6200            to get undo Commands from the whole playlist rather than just the
6201            region.
6202         */
6203
6204         vector<Command*> cmds;
6205         ar->playlist()->rdiff (cmds);
6206         _editor->session()->add_commands (cmds);
6207         _editor->commit_reversible_command ();
6208
6209 }
6210
6211 void
6212 CrossfadeEdgeDrag::aborted (bool)
6213 {
6214         if (start) {
6215                 // arv->redraw_start_xfade ();
6216         } else {
6217                 // arv->redraw_end_xfade ();
6218         }
6219 }
6220
6221 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6222         : Drag (e, item, true)
6223         , line (new EditorCursor (*e))
6224 {
6225         line->set_position (pos);
6226         line->show ();
6227 }
6228
6229 RegionCutDrag::~RegionCutDrag ()
6230 {
6231         delete line;
6232 }
6233
6234 void
6235 RegionCutDrag::motion (GdkEvent*, bool)
6236 {
6237         framepos_t where = _drags->current_pointer_frame();
6238         _editor->snap_to (where);
6239
6240         line->set_position (where);
6241 }
6242
6243 void
6244 RegionCutDrag::finished (GdkEvent*, bool)
6245 {
6246         _editor->get_track_canvas()->canvas()->re_enter();
6247
6248         framepos_t pos = _drags->current_pointer_frame();
6249
6250         line->hide ();
6251
6252         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6253
6254         if (rs.empty()) {
6255                 return;
6256         }
6257
6258         _editor->split_regions_at (pos, rs);
6259 }
6260
6261 void
6262 RegionCutDrag::aborted (bool)
6263 {
6264 }