gtk2_ardour/editor_drag.cc

   1 /*
   2     Copyright (C) 2009 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <stdint.h>
  25 #include <algorithm>
  26
  27 #include "pbd/memento_command.h"
  28 #include "pbd/basename.h"
  29 #include "pbd/stateful_diff_command.h"
  30
  31 #include "gtkmm2ext/utils.h"
  32
  33 #include "ardour/audioengine.h"
  34 #include "ardour/audioregion.h"
  35 #include "ardour/audio_track.h"
  36 #include "ardour/dB.h"
  37 #include "ardour/midi_region.h"
  38 #include "ardour/midi_track.h"
  39 #include "ardour/operations.h"
  40 #include "ardour/region_factory.h"
  41 #include "ardour/session.h"
  42
  43 #include "canvas/canvas.h"
  44 #include "canvas/scroll_group.h"
  45
  46 #include "editor.h"
  47 #include "i18n.h"
  48 #include "keyboard.h"
  49 #include "audio_region_view.h"
  50 #include "automation_region_view.h"
  51 #include "midi_region_view.h"
  52 #include "ardour_ui.h"
  53 #include "gui_thread.h"
  54 #include "control_point.h"
  55 #include "region_gain_line.h"
  56 #include "editor_drag.h"
  57 #include "audio_time_axis.h"
  58 #include "midi_time_axis.h"
  59 #include "selection.h"
  60 #include "midi_selection.h"
  61 #include "automation_time_axis.h"
  62 #include "debug.h"
  63 #include "editor_cursors.h"
  64 #include "mouse_cursors.h"
  65 #include "note_base.h"
  66 #include "patch_change.h"
  67 #include "ui_config.h"
  68 #include "verbose_cursor.h"
  69
  70 using namespace std;
  71 using namespace ARDOUR;
  72 using namespace PBD;
  73 using namespace Gtk;
  74 using namespace Gtkmm2ext;
  75 using namespace Editing;
  76 using namespace ArdourCanvas;
  77
  78 using Gtkmm2ext::Keyboard;
  79
  80 double ControlPointDrag::_zero_gain_fraction = -1.0;
  81
  82 DragManager::DragManager (Editor* e)
  83         : _editor (e)
  84         , _ending (false)
  85         , _current_pointer_x (0.0)
  86         , _current_pointer_y (0.0)
  87         , _current_pointer_frame (0)
  88         , _old_follow_playhead (false)
  89 {
  90 }
  91
  92 DragManager::~DragManager ()
  93 {
  94         abort ();
  95 }
  96
  97 /** Call abort for each active drag */
  98 void
  99 DragManager::abort ()
 100 {
 101         _ending = true;
 102
 103         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 104                 (*i)->abort ();
 105                 delete *i;
 106         }
 107
 108         if (!_drags.empty ()) {
 109                 _editor->set_follow_playhead (_old_follow_playhead, false);
 110         }
 111
 112         _drags.clear ();
 113         _editor->abort_reversible_command();
 114
 115         _ending = false;
 116 }
 117
 118 void
 119 DragManager::add (Drag* d)
 120 {
 121         d->set_manager (this);
 122         _drags.push_back (d);
 123 }
 124
 125 void
 126 DragManager::set (Drag* d, GdkEvent* e, Gdk::Cursor* c)
 127 {
 128         d->set_manager (this);
 129         _drags.push_back (d);
 130         start_grab (e, c);
 131 }
 132
 133 void
 134 DragManager::start_grab (GdkEvent* e, Gdk::Cursor* c)
 135 {
 136         /* Prevent follow playhead during the drag to be nice to the user */
 137         _old_follow_playhead = _editor->follow_playhead ();
 138         _editor->set_follow_playhead (false);
 139
 140         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 141
 142         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 143                 (*i)->start_grab (e, c);
 144         }
 145 }
 146
 147 /** Call end_grab for each active drag.
 148  *  @return true if any drag reported movement having occurred.
 149  */
 150 bool
 151 DragManager::end_grab (GdkEvent* e)
 152 {
 153         _ending = true;
 154
 155         bool r = false;
 156         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 157                 bool const t = (*i)->end_grab (e);
 158                 if (t) {
 159                         r = true;
 160                 }
 161                 delete *i;
 162         }
 163
 164         _drags.clear ();
 165
 166         _ending = false;
 167
 168         _editor->set_follow_playhead (_old_follow_playhead, false);
 169
 170         return r;
 171 }
 172
 173 void
 174 DragManager::mark_double_click ()
 175 {
 176         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 177                 (*i)->set_double_click (true);
 178         }
 179 }
 180
 181 bool
 182 DragManager::motion_handler (GdkEvent* e, bool from_autoscroll)
 183 {
 184         bool r = false;
 185
 186         /* calling this implies that we expect the event to have canvas
 187          * coordinates
 188          *
 189          * Can we guarantee that this is true?
 190          */
 191
 192         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 193
 194         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 195                 bool const t = (*i)->motion_handler (e, from_autoscroll);
 196                 /* run all handlers; return true if at least one of them
 197                    returns true (indicating that the event has been handled).
 198                 */
 199                 if (t) {
 200                         r = true;
 201                 }
 202
 203         }
 204
 205         return r;
 206 }
 207
 208 bool
 209 DragManager::have_item (ArdourCanvas::Item* i) const
 210 {
 211         list<Drag*>::const_iterator j = _drags.begin ();
 212         while (j != _drags.end() && (*j)->item () != i) {
 213                 ++j;
 214         }
 215
 216         return j != _drags.end ();
 217 }
 218
 219 Drag::Drag (Editor* e, ArdourCanvas::Item* i, bool trackview_only)
 220         : _editor (e)
 221         , _drags (0)
 222         , _item (i)
 223         , _pointer_frame_offset (0)
 224         , _x_constrained (false)
 225         , _y_constrained (false)
 226         , _was_rolling (false)
 227         , _trackview_only (trackview_only)
 228         , _move_threshold_passed (false)
 229         , _starting_point_passed (false)
 230         , _initially_vertical (false)
 231         , _was_double_click (false)
 232         , _grab_x (0.0)
 233         , _grab_y (0.0)
 234         , _last_pointer_x (0.0)
 235         , _last_pointer_y (0.0)
 236         , _raw_grab_frame (0)
 237         , _grab_frame (0)
 238         , _last_pointer_frame (0)
 239         , _snap_delta (0)
 240 {
 241
 242 }
 243
 244 void
 245 Drag::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t /*time*/)
 246 {
 247         _item->ungrab ();
 248         _item = new_item;
 249
 250         if (!_cursor_ctx) {
 251                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 252         } else {
 253                 _cursor_ctx->change (cursor);
 254         }
 255
 256         _item->grab ();
 257 }
 258
 259 void
 260 Drag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 261 {
 262
 263         /* we set up x/y dragging constraints on first move */
 264
 265         _raw_grab_frame = _editor->canvas_event_sample (event, &_grab_x, &_grab_y);
 266
 267         setup_pointer_frame_offset ();
 268         _grab_frame = adjusted_frame (_raw_grab_frame, event);
 269         _last_pointer_frame = _grab_frame;
 270         _last_pointer_x = _grab_x;
 271
 272         if (_trackview_only) {
 273                 _grab_y = _grab_y - _editor->get_trackview_group()->canvas_origin().y;
 274         }
 275
 276         _last_pointer_y = _grab_y;
 277
 278         _item->grab ();
 279
 280         if (!_editor->cursors()->is_invalid (cursor)) {
 281                 /* CAIROCANVAS need a variant here that passes *cursor */
 282                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 283         }
 284
 285         if (_editor->session() && _editor->session()->transport_rolling()) {
 286                 _was_rolling = true;
 287         } else {
 288                 _was_rolling = false;
 289         }
 290
 291         switch (_editor->snap_type()) {
 292         case SnapToRegionStart:
 293         case SnapToRegionEnd:
 294         case SnapToRegionSync:
 295         case SnapToRegionBoundary:
 296                 _editor->build_region_boundary_cache ();
 297                 break;
 298         default:
 299                 break;
 300         }
 301 }
 302
 303 /** Call to end a drag `successfully'.  Ungrabs item and calls
 304  *  subclass' finished() method.
 305  *
 306  *  @param event GDK event, or 0.
 307  *  @return true if some movement occurred, otherwise false.
 308  */
 309 bool
 310 Drag::end_grab (GdkEvent* event)
 311 {
 312         _editor->stop_canvas_autoscroll ();
 313
 314         _item->ungrab ();
 315
 316         finished (event, _move_threshold_passed);
 317
 318         _editor->verbose_cursor()->hide ();
 319         _cursor_ctx.reset();
 320
 321         return _move_threshold_passed;
 322 }
 323
 324 framepos_t
 325 Drag::adjusted_frame (framepos_t f, GdkEvent const * event, bool snap) const
 326 {
 327         framepos_t pos = 0;
 328
 329         if (f > _pointer_frame_offset) {
 330                 pos = f - _pointer_frame_offset;
 331         }
 332
 333         if (snap) {
 334                 _editor->snap_to_with_modifier (pos, event);
 335         }
 336
 337         return pos;
 338 }
 339
 340 framepos_t
 341 Drag::adjusted_current_frame (GdkEvent const * event, bool snap) const
 342 {
 343         return adjusted_frame (_drags->current_pointer_frame (), event, snap);
 344 }
 345
 346 frameoffset_t
 347 Drag::snap_delta (guint state) const
 348 {
 349         if (ArdourKeyboard::indicates_snap_delta (state)) {
 350                 return _snap_delta;
 351         }
 352
 353         return 0;
 354 }
 355
 356 double
 357 Drag::current_pointer_x() const
 358 {
 359         return _drags->current_pointer_x ();
 360 }
 361
 362 double
 363 Drag::current_pointer_y () const
 364 {
 365         if (!_trackview_only) {
 366                 return _drags->current_pointer_y ();
 367         }
 368
 369         return _drags->current_pointer_y () - _editor->get_trackview_group()->canvas_origin().y;
 370 }
 371
 372 void
 373 Drag::setup_snap_delta (framepos_t pos)
 374 {
 375         framepos_t temp = pos;
 376         _editor->snap_to (temp, ARDOUR::RoundNearest, false, true);
 377         _snap_delta = temp - pos;
 378 }
 379
 380 bool
 381 Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 382 {
 383         /* check to see if we have moved in any way that matters since the last motion event */
 384         if (_move_threshold_passed &&
 385             (!x_movement_matters() || _last_pointer_x == current_pointer_x ()) &&
 386             (!y_movement_matters() || _last_pointer_y == current_pointer_y ()) ) {
 387                 return false;
 388         }
 389
 390         pair<framecnt_t, int> const threshold = move_threshold ();
 391
 392         bool const old_move_threshold_passed = _move_threshold_passed;
 393
 394         if (!_move_threshold_passed) {
 395
 396                 bool const xp = (::llabs (_drags->current_pointer_frame () - _raw_grab_frame) >= threshold.first);
 397                 bool const yp = (::fabs ((current_pointer_y () - _grab_y)) >= threshold.second);
 398
 399                 _move_threshold_passed = ((xp && x_movement_matters()) || (yp && y_movement_matters()));
 400         }
 401
 402         if (active (_editor->mouse_mode) && _move_threshold_passed) {
 403
 404                 if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
 405
 406                         if (old_move_threshold_passed != _move_threshold_passed) {
 407
 408                                 /* just changed */
 409
 410                                 if (fabs (current_pointer_y() - _grab_y) > fabs (current_pointer_x() - _grab_x)) {
 411                                         _initially_vertical = true;
 412                                 } else {
 413                                         _initially_vertical = false;
 414                                 }
 415                                 /** check constraints for this drag.
 416                                  *  Note that the current convention is to use "contains" for
 417                                  *  key modifiers during motion and "equals" when initiating a drag.
 418                                  *  In this case we haven't moved yet, so "equals" applies here.
 419                                  */
 420                                 if (Config->get_edit_mode() != Lock) {
 421                                         if (event->motion.state & Gdk::BUTTON2_MASK) {
 422                                                 // if dragging with button2, the motion is x constrained, with constraint modifier it is y constrained
 423                                                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 424                                                         _x_constrained = false;
 425                                                         _y_constrained = true;
 426                                                 } else {
 427                                                         _x_constrained = true;
 428                                                         _y_constrained = false;
 429                                                 }
 430                                         } else if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 431                                                 // if dragging normally, the motion is constrained to the first direction of movement.
 432                                                 if (_initially_vertical) {
 433                                                         _x_constrained = true;
 434                                                         _y_constrained = false;
 435                                                 } else {
 436                                                         _x_constrained = false;
 437                                                         _y_constrained = true;
 438                                                 }
 439                                         }
 440                                 } else {
 441                                         if (event->button.state & Gdk::BUTTON2_MASK) {
 442                                                 _x_constrained = false;
 443                                         } else {
 444                                                 _x_constrained = true;
 445                                         }
 446                                         _y_constrained = false;
 447                                 }
 448                         }
 449
 450                         if (!from_autoscroll) {
 451                                 _editor->maybe_autoscroll (true, allow_vertical_autoscroll (), false);
 452                         }
 453
 454                         if (!_editor->autoscroll_active() || from_autoscroll) {
 455
 456
 457                                 bool first_move = (_move_threshold_passed != old_move_threshold_passed) || from_autoscroll;
 458
 459                                 motion (event, first_move && !_starting_point_passed);
 460
 461                                 if (first_move && !_starting_point_passed) {
 462                                         _starting_point_passed = true;
 463                                 }
 464
 465                                 _last_pointer_x = _drags->current_pointer_x ();
 466                                 _last_pointer_y = current_pointer_y ();
 467                                 _last_pointer_frame = adjusted_current_frame (event, false);
 468                         }
 469
 470                         return true;
 471                 }
 472         }
 473
 474         return false;
 475 }
 476
 477 /** Call to abort a drag.  Ungrabs item and calls subclass's aborted () */
 478 void
 479 Drag::abort ()
 480 {
 481         if (_item) {
 482                 _item->ungrab ();
 483         }
 484
 485         aborted (_move_threshold_passed);
 486
 487         _editor->stop_canvas_autoscroll ();
 488         _editor->verbose_cursor()->hide ();
 489 }
 490
 491 void
 492 Drag::show_verbose_cursor_time (framepos_t frame)
 493 {
 494         _editor->verbose_cursor()->set_time (frame);
 495         _editor->verbose_cursor()->show ();
 496 }
 497
 498 void
 499 Drag::show_verbose_cursor_duration (framepos_t start, framepos_t end, double /*xoffset*/)
 500 {
 501         _editor->verbose_cursor()->set_duration (start, end);
 502         _editor->verbose_cursor()->show ();
 503 }
 504
 505 void
 506 Drag::show_verbose_cursor_text (string const & text)
 507 {
 508         _editor->verbose_cursor()->set (text);
 509         _editor->verbose_cursor()->show ();
 510 }
 511
 512 boost::shared_ptr<Region>
 513 Drag::add_midi_region (MidiTimeAxisView* view, bool commit)
 514 {
 515         if (_editor->session()) {
 516                 const TempoMap& map (_editor->session()->tempo_map());
 517                 framecnt_t pos = grab_frame();
 518                 /* not that the frame rate used here can be affected by pull up/down which
 519                    might be wrong.
 520                 */
 521                 framecnt_t len = map.frame_at_beat (map.beat_at_frame (pos) + 1.0) - pos;
 522                 return view->add_region (grab_frame(), len, commit);
 523         }
 524
 525         return boost::shared_ptr<Region>();
 526 }
 527
 528 struct EditorOrderTimeAxisViewSorter {
 529         bool operator() (TimeAxisView* a, TimeAxisView* b) {
 530                 RouteTimeAxisView* ra = dynamic_cast<RouteTimeAxisView*> (a);
 531                 RouteTimeAxisView* rb = dynamic_cast<RouteTimeAxisView*> (b);
 532                 assert (ra && rb);
 533                 return ra->route()->order_key () < rb->route()->order_key ();
 534         }
 535 };
 536
 537 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 538         : Drag (e, i)
 539         , _primary (p)
 540         , _ntracks (0)
 541 {
 542         _editor->visible_order_range (&_visible_y_low, &_visible_y_high);
 543
 544         /* Make a list of tracks to refer to during the drag; we include hidden tracks,
 545            as some of the regions we are dragging may be on such tracks.
 546         */
 547
 548         TrackViewList track_views = _editor->track_views;
 549         track_views.sort (EditorOrderTimeAxisViewSorter ());
 550
 551         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 552                 _time_axis_views.push_back (*i);
 553
 554                 TimeAxisView::Children children_list = (*i)->get_child_list ();
 555                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 556                         _time_axis_views.push_back (j->get());
 557                 }
 558         }
 559
 560         /* the list of views can be empty at this point if this is a region list-insert drag
 561          */
 562
 563         for (list<RegionView*>::const_iterator i = v.begin(); i != v.end(); ++i) {
 564                 _views.push_back (DraggingView (*i, this, &(*i)->get_time_axis_view()));
 565         }
 566
 567         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), boost::bind (&RegionDrag::region_going_away, this, _1), gui_context());
 568 }
 569
 570 void
 571 RegionDrag::region_going_away (RegionView* v)
 572 {
 573         list<DraggingView>::iterator i = _views.begin ();
 574         while (i != _views.end() && i->view != v) {
 575                 ++i;
 576         }
 577
 578         if (i != _views.end()) {
 579                 _views.erase (i);
 580         }
 581 }
 582
 583 /** Given a TimeAxisView, return the index of it into the _time_axis_views vector,
 584  *  or -1 if it is not found.
 585  */
 586 int
 587 RegionDrag::find_time_axis_view (TimeAxisView* t) const
 588 {
 589         int i = 0;
 590         int const N = _time_axis_views.size ();
 591         while (i < N && _time_axis_views[i] != t) {
 592                 ++i;
 593         }
 594
 595         if (_time_axis_views[i] != t) {
 596                 return -1;
 597         }
 598
 599         return i;
 600 }
 601
 602 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 603         : RegionDrag (e, i, p, v)
 604         , _brushing (b)
 605         , _ignore_video_lock (false)
 606         , _total_x_delta (0)
 607         , _last_pointer_time_axis_view (0)
 608         , _last_pointer_layer (0)
 609         , _ndropzone (0)
 610         , _pdropzone (0)
 611         , _ddropzone (0)
 612 {
 613         DEBUG_TRACE (DEBUG::Drags, "New RegionMotionDrag\n");
 614 }
 615
 616 void
 617 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
 618 {
 619         Drag::start_grab (event, cursor);
 620         setup_snap_delta (_last_frame_position);
 621
 622         show_verbose_cursor_time (_last_frame_position);
 623
 624         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (current_pointer_y ());
 625         if (tv.first) {
 626                 _last_pointer_time_axis_view = find_time_axis_view (tv.first);
 627                 assert(_last_pointer_time_axis_view >= 0);
 628                 _last_pointer_layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
 629         }
 630
 631         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
 632                 _ignore_video_lock = true;
 633         }
 634
 635         if (_brushing) {
 636                 /* cross track dragging seems broken here. disabled for now. */
 637                 _y_constrained = true;
 638         }
 639 }
 640
 641 double
 642 RegionMotionDrag::compute_x_delta (GdkEvent const * event, framepos_t* pending_region_position)
 643 {
 644         /* compute the amount of pointer motion in frames, and where
 645            the region would be if we moved it by that much.
 646         */
 647         *pending_region_position = adjusted_frame (_drags->current_pointer_frame (), event, false);
 648
 649         framepos_t sync_frame;
 650         framecnt_t sync_offset;
 651         int32_t sync_dir;
 652
 653         sync_offset = _primary->region()->sync_offset (sync_dir);
 654
 655         /* we don't handle a sync point that lies before zero.
 656          */
 657         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 658
 659                 framecnt_t const sd = snap_delta (event->button.state);
 660                 sync_frame = *pending_region_position + (sync_dir * sync_offset) + sd;
 661
 662                 _editor->snap_to_with_modifier (sync_frame, event);
 663
 664                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame) - sd;
 665
 666         } else {
 667                 *pending_region_position = _last_frame_position;
 668         }
 669
 670         if (*pending_region_position > max_framepos - _primary->region()->length()) {
 671                 *pending_region_position = _last_frame_position;
 672         }
 673
 674         double dx = 0;
 675
 676         bool const x_move_allowed = !_x_constrained;
 677
 678         if ((*pending_region_position != _last_frame_position) && x_move_allowed) {
 679
 680                 /* x movement since last time (in pixels) */
 681                 dx = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->samples_per_pixel;
 682
 683                 /* total x movement */
 684                 framecnt_t total_dx = *pending_region_position;
 685                 if (regions_came_from_canvas()) {
 686                         total_dx = total_dx - grab_frame ();
 687                 }
 688
 689                 /* check that no regions have gone off the start of the session */
 690                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 691                         if ((i->view->region()->position() + total_dx) < 0) {
 692                                 dx = 0;
 693                                 *pending_region_position = _last_frame_position;
 694                                 break;
 695                         }
 696                 }
 697
 698         }
 699
 700         return dx;
 701 }
 702
 703 int
 704 RegionDrag::apply_track_delta (const int start, const int delta, const int skip, const bool distance_only) const
 705 {
 706         if (delta == 0) {
 707                 return start;
 708         }
 709
 710         const int tavsize  = _time_axis_views.size();
 711         const int dt = delta > 0 ? +1 : -1;
 712         int current  = start;
 713         int target   = start + delta - skip;
 714
 715         assert (current < 0 || current >= tavsize || !_time_axis_views[current]->hidden());
 716         assert (skip == 0 || (skip < 0 && delta < 0) || (skip > 0 && delta > 0));
 717
 718         while (current >= 0 && current != target) {
 719                 current += dt;
 720                 if (current < 0 && dt < 0) {
 721                         break;
 722                 }
 723                 if (current >= tavsize && dt > 0) {
 724                         break;
 725                 }
 726                 if (current < 0 || current >= tavsize) {
 727                         continue;
 728                 }
 729
 730                 RouteTimeAxisView const * rtav = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[current]);
 731                 if (_time_axis_views[current]->hidden() || !rtav || !rtav->is_track()) {
 732                         target += dt;
 733                 }
 734
 735                 if (distance_only && current == start + delta) {
 736                         break;
 737                 }
 738         }
 739         return target;
 740 }
 741
 742 bool
 743 RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
 744 {
 745         if (_y_constrained) {
 746                 return false;
 747         }
 748
 749         const int tavsize  = _time_axis_views.size();
 750         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 751                 int n = apply_track_delta (i->time_axis_view, delta_track, skip_invisible);
 752                 assert (n < 0 || n >= tavsize || !_time_axis_views[n]->hidden());
 753
 754                 if (i->time_axis_view < 0 || i->time_axis_view >= tavsize) {
 755                         /* already in the drop zone */
 756                         if (delta_track >= 0) {
 757                                 /* downward motion - OK if others are still not in the dropzone */
 758                                 continue;
 759                         }
 760
 761                 }
 762
 763                 if (n < 0) {
 764                         /* off the top */
 765                         return false;
 766                 } else if (n >= tavsize) {
 767                         /* downward motion into drop zone. That's fine. */
 768                         continue;
 769                 }
 770
 771                 RouteTimeAxisView const * to = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[n]);
 772                 if (to == 0 || to->hidden() || !to->is_track() || to->track()->data_type() != i->view->region()->data_type()) {
 773                         /* not a track, or the wrong type */
 774                         return false;
 775                 }
 776
 777                 double const l = i->layer + delta_layer;
 778
 779                 /* Note that we allow layer to be up to 0.5 below zero, as this is used by `Expanded'
 780                    mode to allow the user to place a region below another on layer 0.
 781                 */
 782                 if (delta_track == 0 && (l < -0.5 || l >= int (to->view()->layers()))) {
 783                         /* Off the top or bottom layer; note that we only refuse if the track hasn't changed.
 784                            If it has, the layers will be munged later anyway, so it's ok.
 785                         */
 786                         return false;
 787                 }
 788         }
 789
 790         /* all regions being dragged are ok with this change */
 791         return true;
 792 }
 793
 794 struct DraggingViewSorter {
 795         bool operator() (const DraggingView& a, const DraggingView& b) {
 796                 return a.time_axis_view < b.time_axis_view;
 797         }
 798 };
 799
 800 void
 801 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 802 {
 803         double delta_layer = 0;
 804         int delta_time_axis_view = 0;
 805         int current_pointer_time_axis_view = -1;
 806
 807         assert (!_views.empty ());
 808
 809         /* Note: time axis views in this method are often expressed as an index into the _time_axis_views vector */
 810
 811         /* Find the TimeAxisView that the pointer is now over */
 812         const double cur_y = current_pointer_y ();
 813         pair<TimeAxisView*, double> const r = _editor->trackview_by_y_position (cur_y);
 814         TimeAxisView* tv = r.first;
 815
 816         if (!tv && cur_y < 0) {
 817                 /* above trackview area, autoscroll hasn't moved us since last time, nothing to do */
 818                 return;
 819         }
 820
 821         /* find drop-zone y-position */
 822         Coord last_track_bottom_edge;
 823         last_track_bottom_edge = 0;
 824         for (std::vector<TimeAxisView*>::reverse_iterator t = _time_axis_views.rbegin(); t != _time_axis_views.rend(); ++t) {
 825                 if (!(*t)->hidden()) {
 826                         last_track_bottom_edge = (*t)->canvas_display()->canvas_origin ().y + (*t)->effective_height();
 827                         break;
 828                 }
 829         }
 830
 831         if (tv && tv->view()) {
 832                 /* the mouse is over a track */
 833                 double layer = r.second;
 834
 835                 if (first_move && tv->view()->layer_display() == Stacked) {
 836                         tv->view()->set_layer_display (Expanded);
 837                 }
 838
 839                 /* Here's the current pointer position in terms of time axis view and layer */
 840                 current_pointer_time_axis_view = find_time_axis_view (tv);
 841                 assert(current_pointer_time_axis_view >= 0);
 842
 843                 double const current_pointer_layer = tv->layer_display() == Overlaid ? 0 : layer;
 844
 845                 /* Work out the change in y */
 846
 847                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
 848                 if (!rtv || !rtv->is_track()) {
 849                         /* ignore busses early on. we can't move any regions on them */
 850                 } else if (_last_pointer_time_axis_view < 0) {
 851                         /* Was in the drop-zone, now over a track.
 852                          * Hence it must be an upward move (from the bottom)
 853                          *
 854                          * track_index is still -1, so delta must be set to
 855                          * move up the correct number of tracks from the bottom.
 856                          *
 857                          * This is necessary because steps may be skipped if
 858                          * the bottom-most track is not a valid target and/or
 859                          * if there are hidden tracks at the bottom.
 860                          * Hence the initial offset (_ddropzone) as well as the
 861                          * last valid pointer position (_pdropzone) need to be
 862                          * taken into account.
 863                          */
 864                         delta_time_axis_view = current_pointer_time_axis_view - _time_axis_views.size () + _ddropzone - _pdropzone;
 865                 } else {
 866                         delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
 867                 }
 868
 869                 /* TODO needs adjustment per DraggingView,
 870                  *
 871                  * e.g. select one region on the top-layer of a track
 872                  * and one region which is at the bottom-layer of another track
 873                  * drag both.
 874                  *
 875                  * Indicated drop-zones and layering is wrong.
 876                  * and may infer additional layers on the target-track
 877                  * (depending how many layers the original track had).
 878                  *
 879                  * Or select two regions (different layers) on a same track,
 880                  * move across a non-layer track.. -> layering info is lost.
 881                  * on drop either of the regions may be on top.
 882                  *
 883                  * Proposed solution: screw it :) well,
 884                  *   don't use delta_layer, use an absolute value
 885                  *   1) remember DraggingView's layer  as float 0..1  [current layer / all layers of source]
 886                  *   2) calculate current mouse pos, y-pos inside track divided by height of mouse-over track.
 887                  *   3) iterate over all DraggingView, find the one that is over the track with most layers
 888                  *   4) proportionally scale layer to layers available on target
 889                  */
 890                 delta_layer = current_pointer_layer - _last_pointer_layer;
 891
 892         }
 893         /* for automation lanes, there is a TimeAxisView but no ->view()
 894          * if (!tv) -> dropzone
 895          */
 896         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view >= 0) {
 897                 /* Moving into the drop-zone.. */
 898                 delta_time_axis_view = _time_axis_views.size () - _last_pointer_time_axis_view;
 899                 /* delta_time_axis_view may not be sufficient to move into the DZ
 900                  * the mouse may enter it, but it may not be a valid move due to
 901                  * constraints.
 902                  *
 903                  * -> remember the delta needed to move into the dropzone
 904                  */
 905                 _ddropzone = delta_time_axis_view;
 906                 /* ..but subtract hidden tracks (or routes) at the bottom.
 907                  * we silently move mover them
 908                  */
 909                 _ddropzone -= apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 910                               - _time_axis_views.size();
 911         }
 912         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view < 0) {
 913                 /* move around inside the zone.
 914                  * This allows to move further down until all regions are in the zone.
 915                  */
 916                 const double ptr_y = cur_y + _editor->get_trackview_group()->canvas_origin().y;
 917                 assert(ptr_y >= last_track_bottom_edge);
 918                 assert(_ddropzone > 0);
 919
 920                 /* calculate mouse position in 'tracks' below last track. */
 921                 const double dzi_h = TimeAxisView::preset_height (HeightNormal);
 922                 uint32_t dzpos = _ddropzone + floor((1 + ptr_y - last_track_bottom_edge) / dzi_h);
 923
 924                 if (dzpos > _pdropzone && _ndropzone < _ntracks) {
 925                         // move further down
 926                         delta_time_axis_view =  dzpos - _pdropzone;
 927                 } else if (dzpos < _pdropzone && _ndropzone > 0) {
 928                         // move up inside the DZ
 929                         delta_time_axis_view =  dzpos - _pdropzone;
 930                 }
 931         }
 932
 933         /* Work out the change in x */
 934         framepos_t pending_region_position;
 935         double const x_delta = compute_x_delta (event, &pending_region_position);
 936         _last_frame_position = pending_region_position;
 937
 938         /* calculate hidden tracks in current y-axis delta */
 939         int delta_skip = 0;
 940         if (_last_pointer_time_axis_view < 0 && _pdropzone > 0) {
 941                 /* The mouse is more than one track below the dropzone.
 942                  * distance calculation is not needed (and would not work, either
 943                  * because the dropzone is "packed").
 944                  *
 945                  * Except when [partially] moving regions out of dropzone in a large step.
 946                  * (the mouse may or may not remain in the DZ)
 947                  * Hidden tracks at the bottom of the TAV need to be skipped.
 948                  *
 949                  * This also handles the case if the mouse entered the DZ
 950                  * in a large step (exessive delta), either due to fast-movement,
 951                  * autoscroll, laggy UI. _ddropzone copensates for that (see "move into dz" above)
 952                  */
 953                 if (delta_time_axis_view < 0 && (int)_ddropzone - delta_time_axis_view >= (int)_pdropzone) {
 954                         const int dt = delta_time_axis_view + (int)_pdropzone - (int)_ddropzone;
 955                         assert(dt <= 0);
 956                         delta_skip = apply_track_delta(_time_axis_views.size(), dt, 0, true)
 957                                 -_time_axis_views.size() - dt;
 958                 }
 959         }
 960         else if (_last_pointer_time_axis_view < 0) {
 961                 /* Moving out of the zone. Check for hidden tracks at the bottom. */
 962                 delta_skip = apply_track_delta(_time_axis_views.size(), delta_time_axis_view, 0, true)
 963                              -_time_axis_views.size() - delta_time_axis_view;
 964         } else {
 965                 /* calculate hidden tracks that are skipped by the pointer movement */
 966                 delta_skip = apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 967                              - _last_pointer_time_axis_view
 968                              - delta_time_axis_view;
 969         }
 970
 971         /* Verify change in y */
 972         if (!y_movement_allowed (delta_time_axis_view, delta_layer, delta_skip)) {
 973                 /* this y movement is not allowed, so do no y movement this time */
 974                 delta_time_axis_view = 0;
 975                 delta_layer = 0;
 976                 delta_skip = 0;
 977         }
 978
 979         if (x_delta == 0 && (tv && tv->view() && delta_time_axis_view == 0) && delta_layer == 0 && !first_move) {
 980                 /* haven't reached next snap point, and we're not switching
 981                    trackviews nor layers. nothing to do.
 982                 */
 983                 return;
 984         }
 985
 986         typedef map<boost::shared_ptr<Playlist>, double> PlaylistDropzoneMap;
 987         PlaylistDropzoneMap playlist_dropzone_map;
 988         _ndropzone = 0; // number of elements currently in the dropzone
 989
 990         if (first_move) {
 991                 /* sort views by time_axis.
 992                  * This retains track order in the dropzone, regardless
 993                  * of actual selection order
 994                  */
 995                 _views.sort (DraggingViewSorter());
 996
 997                 /* count number of distinct tracks of all regions
 998                  * being dragged, used for dropzone.
 999                  */
1000                 int prev_track = -1;
1001                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1002                         if (i->time_axis_view != prev_track) {
1003                                 prev_track = i->time_axis_view;
1004                                 ++_ntracks;
1005                         }
1006                 }
1007 #ifndef NDEBUG
1008                 int spread =
1009                         _views.back().time_axis_view -
1010                         _views.front().time_axis_view;
1011
1012                 spread -= apply_track_delta (_views.front().time_axis_view, spread, 0, true)
1013                           -  _views.back().time_axis_view;
1014
1015                 printf("Dragging region(s) from %d different track(s), max dist: %d\n", _ntracks, spread);
1016 #endif
1017         }
1018
1019         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1020
1021                 RegionView* rv = i->view;
1022                 double y_delta;
1023
1024                 y_delta = 0;
1025
1026                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1027                         continue;
1028                 }
1029
1030                 if (first_move) {
1031                         rv->drag_start ();
1032
1033                         /* reparent the regionview into a group above all
1034                          * others
1035                          */
1036
1037                         ArdourCanvas::Item* rvg = rv->get_canvas_group();
1038                         Duple rv_canvas_offset = rvg->parent()->canvas_origin ();
1039                         Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
1040                         rv->get_canvas_group()->reparent (_editor->_drag_motion_group);
1041                         /* move the item so that it continues to appear at the
1042                            same location now that its parent has changed.
1043                            */
1044                         rvg->move (rv_canvas_offset - dmg_canvas_offset);
1045                 }
1046
1047                 /* If we have moved tracks, we'll fudge the layer delta so that the
1048                    region gets moved back onto layer 0 on its new track; this avoids
1049                    confusion when dragging regions from non-zero layers onto different
1050                    tracks.
1051                 */
1052                 double this_delta_layer = delta_layer;
1053                 if (delta_time_axis_view != 0) {
1054                         this_delta_layer = - i->layer;
1055                 }
1056
1057                 int this_delta_time_axis_view = apply_track_delta(i->time_axis_view, delta_time_axis_view, delta_skip) - i->time_axis_view;
1058
1059                 int track_index = i->time_axis_view + this_delta_time_axis_view;
1060                 assert(track_index >= 0);
1061
1062                 if (track_index < 0 || track_index >= (int) _time_axis_views.size()) {
1063                         /* Track is in the Dropzone */
1064
1065                         i->time_axis_view = track_index;
1066                         assert(i->time_axis_view >= (int) _time_axis_views.size());
1067                         if (cur_y >= 0) {
1068
1069                                 double yposition = 0;
1070                                 PlaylistDropzoneMap::iterator pdz = playlist_dropzone_map.find (i->view->region()->playlist());
1071                                 rv->set_height (TimeAxisView::preset_height (HeightNormal));
1072                                 ++_ndropzone;
1073
1074                                 /* store index of each new playlist as a negative count, starting at -1 */
1075
1076                                 if (pdz == playlist_dropzone_map.end()) {
1077                                         /* compute where this new track (which doesn't exist yet) will live
1078                                            on the y-axis.
1079                                         */
1080                                         yposition = last_track_bottom_edge; /* where to place the top edge of the regionview */
1081
1082                                         /* How high is this region view ? */
1083
1084                                         boost::optional<ArdourCanvas::Rect> obbox = rv->get_canvas_group()->bounding_box ();
1085                                         ArdourCanvas::Rect bbox;
1086
1087                                         if (obbox) {
1088                                                 bbox = obbox.get ();
1089                                         }
1090
1091                                         last_track_bottom_edge += bbox.height();
1092
1093                                         playlist_dropzone_map.insert (make_pair (i->view->region()->playlist(), yposition));
1094
1095                                 } else {
1096                                         yposition = pdz->second;
1097                                 }
1098
1099                                 /* values are zero or negative, hence the use of min() */
1100                                 y_delta = yposition - rv->get_canvas_group()->canvas_origin().y;
1101                         }
1102
1103                 } else {
1104
1105                         /* The TimeAxisView that this region is now over */
1106                         TimeAxisView* current_tv = _time_axis_views[track_index];
1107
1108                         /* Ensure it is moved from stacked -> expanded if appropriate */
1109                         if (current_tv->view()->layer_display() == Stacked) {
1110                                 current_tv->view()->set_layer_display (Expanded);
1111                         }
1112
1113                         /* We're only allowed to go -ve in layer on Expanded views */
1114                         if (current_tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
1115                                 this_delta_layer = - i->layer;
1116                         }
1117
1118                         /* Set height */
1119                         rv->set_height (current_tv->view()->child_height ());
1120
1121                         /* Update show/hidden status as the region view may have come from a hidden track,
1122                            or have moved to one.
1123                         */
1124                         if (current_tv->hidden ()) {
1125                                 rv->get_canvas_group()->hide ();
1126                         } else {
1127                                 rv->get_canvas_group()->show ();
1128                         }
1129
1130                         /* Update the DraggingView */
1131                         i->time_axis_view = track_index;
1132                         i->layer += this_delta_layer;
1133
1134                         if (_brushing) {
1135                                 _editor->mouse_brush_insert_region (rv, pending_region_position);
1136                         } else {
1137                                 Duple track_origin;
1138
1139                                 /* Get the y coordinate of the top of the track that this region is now over */
1140                                 track_origin = current_tv->canvas_display()->item_to_canvas (track_origin);
1141
1142                                 /* And adjust for the layer that it should be on */
1143                                 StreamView* cv = current_tv->view ();
1144                                 switch (cv->layer_display ()) {
1145                                 case Overlaid:
1146                                         break;
1147                                 case Stacked:
1148                                         track_origin.y += (cv->layers() - i->layer - 1) * cv->child_height ();
1149                                         break;
1150                                 case Expanded:
1151                                         track_origin.y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
1152                                         break;
1153                                 }
1154
1155                                 /* need to get the parent of the regionview
1156                                  * canvas group and get its position in
1157                                  * equivalent coordinate space as the trackview
1158                                  * we are now dragging over.
1159                                  */
1160
1161                                 y_delta = track_origin.y - rv->get_canvas_group()->canvas_origin().y;
1162
1163                         }
1164                 }
1165
1166                 /* Now move the region view */
1167                 rv->move (x_delta, y_delta);
1168
1169         } /* foreach region */
1170
1171         _total_x_delta += x_delta;
1172
1173         if (x_delta != 0 && !_brushing) {
1174                 show_verbose_cursor_time (_last_frame_position);
1175         }
1176
1177         /* keep track of pointer movement */
1178         if (tv) {
1179                 /* the pointer is currently over a time axis view */
1180
1181                 if (_last_pointer_time_axis_view < 0) {
1182                         /* last motion event was not over a time axis view
1183                          * or last y-movement out of the dropzone was not valid
1184                          */
1185                         int dtz = 0;
1186                         if (delta_time_axis_view < 0) {
1187                                 /* in the drop zone, moving up */
1188
1189                                 /* _pdropzone is the last known pointer y-axis position inside the DZ.
1190                                  * We do not use negative _last_pointer_time_axis_view because
1191                                  * the dropzone is "packed" (the actual track offset is ignored)
1192                                  *
1193                                  * As opposed to the actual number
1194                                  * of elements in the dropzone (_ndropzone)
1195                                  * _pdropzone is not constrained. This is necessary
1196                                  * to allow moving multiple regions with y-distance
1197                                  * into the DZ.
1198                                  *
1199                                  * There can be 0 elements in the dropzone,
1200                                  * even though the drag-pointer is inside the DZ.
1201                                  *
1202                                  * example:
1203                                  * [ Audio-track, Midi-track, Audio-track, DZ ]
1204                                  * move regions from both audio tracks at the same time into the
1205                                  * DZ by grabbing the region in the bottom track.
1206                                  */
1207                                 assert(current_pointer_time_axis_view >= 0);
1208                                 dtz = std::min((int)_pdropzone, (int)_ddropzone - delta_time_axis_view);
1209                                 _pdropzone -= dtz;
1210                         }
1211
1212                         /* only move out of the zone if the movement is OK */
1213                         if (_pdropzone == 0 && delta_time_axis_view != 0) {
1214                                 assert(delta_time_axis_view < 0);
1215                                 _last_pointer_time_axis_view = current_pointer_time_axis_view;
1216                                 /* if all logic and maths are correct, there is no need to assign the 'current' pointer.
1217                                  * the current position can be calculated as follows:
1218                                  */
1219                                 // a well placed oofus attack can still throw this off.
1220                                 // likley auto-scroll related, printf() debugging may tell, commented out for now.
1221                                 //assert (current_pointer_time_axis_view == _time_axis_views.size() - dtz + _ddropzone + delta_time_axis_view);
1222                         }
1223                 } else {
1224                         /* last motion event was also over a time axis view */
1225                         _last_pointer_time_axis_view += delta_time_axis_view;
1226                         assert(_last_pointer_time_axis_view >= 0);
1227                 }
1228
1229         } else {
1230
1231                 /* the pointer is not over a time axis view */
1232                 assert ((delta_time_axis_view > 0) || (((int)_pdropzone) >= (delta_skip - delta_time_axis_view)));
1233                 _pdropzone += delta_time_axis_view - delta_skip;
1234                 _last_pointer_time_axis_view = -1; // <0 : we're in the zone, value does not matter.
1235         }
1236
1237         _last_pointer_layer += delta_layer;
1238 }
1239
1240 void
1241 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
1242 {
1243         if (_copy && first_move) {
1244                 if (_x_constrained && !_brushing) {
1245                         _editor->begin_reversible_command (Operations::fixed_time_region_copy);
1246                 } else if (!_brushing) {
1247                         _editor->begin_reversible_command (Operations::region_copy);
1248                 } else if (_brushing) {
1249                         _editor->begin_reversible_command (Operations::drag_region_brush);
1250                 }
1251                 /* duplicate the regionview(s) and region(s) */
1252
1253                 list<DraggingView> new_regionviews;
1254
1255                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1256
1257                         RegionView* rv = i->view;
1258                         AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1259                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1260
1261                         const boost::shared_ptr<const Region> original = rv->region();
1262                         boost::shared_ptr<Region> region_copy = RegionFactory::create (original, true);
1263                         region_copy->set_position (original->position());
1264                         /* need to set this so that the drop zone code can work. This doesn't
1265                            actually put the region into the playlist, but just sets a weak pointer
1266                            to it.
1267                         */
1268                         region_copy->set_playlist (original->playlist());
1269
1270                         RegionView* nrv;
1271                         if (arv) {
1272                                 boost::shared_ptr<AudioRegion> audioregion_copy
1273                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1274
1275                                 nrv = new AudioRegionView (*arv, audioregion_copy);
1276                         } else if (mrv) {
1277                                 boost::shared_ptr<MidiRegion> midiregion_copy
1278                                         = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1279                                 nrv = new MidiRegionView (*mrv, midiregion_copy);
1280                         } else {
1281                                 continue;
1282                         }
1283
1284                         nrv->get_canvas_group()->show ();
1285                         new_regionviews.push_back (DraggingView (nrv, this, i->initial_time_axis_view));
1286
1287                         /* swap _primary to the copy */
1288
1289                         if (rv == _primary) {
1290                                 _primary = nrv;
1291                         }
1292
1293                         /* ..and deselect the one we copied */
1294
1295                         rv->set_selected (false);
1296                 }
1297
1298                 if (!new_regionviews.empty()) {
1299
1300                         /* reflect the fact that we are dragging the copies */
1301
1302                         _views = new_regionviews;
1303
1304                         swap_grab (new_regionviews.front().view->get_canvas_group (), 0, event ? event->motion.time : 0);
1305                 }
1306
1307         } else if (!_copy && first_move) {
1308                 if (_x_constrained && !_brushing) {
1309                         _editor->begin_reversible_command (_("fixed time region drag"));
1310                 } else if (!_brushing) {
1311                         _editor->begin_reversible_command (Operations::region_drag);
1312                 } else if (_brushing) {
1313                         _editor->begin_reversible_command (Operations::drag_region_brush);
1314                 }
1315         }
1316         RegionMotionDrag::motion (event, first_move);
1317 }
1318
1319 void
1320 RegionMotionDrag::finished (GdkEvent *, bool)
1321 {
1322         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1323                 if (!(*i)->view()) {
1324                         continue;
1325                 }
1326
1327                 if ((*i)->view()->layer_display() == Expanded) {
1328                         (*i)->view()->set_layer_display (Stacked);
1329                 }
1330         }
1331 }
1332
1333 void
1334 RegionMoveDrag::finished (GdkEvent* ev, bool movement_occurred)
1335 {
1336         RegionMotionDrag::finished (ev, movement_occurred);
1337
1338         if (!movement_occurred) {
1339
1340                 /* just a click */
1341
1342                 if (was_double_click() && !_views.empty()) {
1343                         DraggingView dv = _views.front();
1344                         dv.view->show_region_editor ();
1345
1346                 }
1347
1348                 return;
1349         }
1350
1351         assert (!_views.empty ());
1352
1353         /* We might have hidden region views so that they weren't visible during the drag
1354            (when they have been reparented).  Now everything can be shown again, as region
1355            views are back in their track parent groups.
1356         */
1357         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1358                 i->view->get_canvas_group()->show ();
1359         }
1360
1361         bool const changed_position = (_last_frame_position != _primary->region()->position());
1362         bool const changed_tracks = (_time_axis_views[_views.front().time_axis_view] != &_views.front().view->get_time_axis_view());
1363         framecnt_t const drag_delta = _primary->region()->position() - _last_frame_position;
1364
1365         if (_copy) {
1366
1367                 finished_copy (
1368                         changed_position,
1369                         changed_tracks,
1370                         drag_delta
1371                         );
1372
1373         } else {
1374
1375                 finished_no_copy (
1376                         changed_position,
1377                         changed_tracks,
1378                         drag_delta
1379                         );
1380
1381         }
1382
1383         _editor->maybe_locate_with_edit_preroll (_editor->get_selection().regions.start());
1384 }
1385
1386 RouteTimeAxisView*
1387 RegionMoveDrag::create_destination_time_axis (boost::shared_ptr<Region> region, TimeAxisView* original)
1388 {
1389         /* Add a new track of the correct type, and return the RouteTimeAxisView that is created to display the
1390            new track.
1391          */
1392
1393         try {
1394                 if (boost::dynamic_pointer_cast<AudioRegion> (region)) {
1395                         list<boost::shared_ptr<AudioTrack> > audio_tracks;
1396                         uint32_t output_chan = region->n_channels();
1397                         if ((Config->get_output_auto_connect() & AutoConnectMaster) && _editor->session()->master_out()) {
1398                                 output_chan =  _editor->session()->master_out()->n_inputs().n_audio();
1399                         }
1400                         audio_tracks = _editor->session()->new_audio_track (region->n_channels(), output_chan, ARDOUR::Normal, 0, 1, region->name());
1401                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (audio_tracks.front());
1402                         if (rtav) {
1403                                 rtav->set_height (original->current_height());
1404                         }
1405                         return rtav;
1406                 } else {
1407                         ChanCount one_midi_port (DataType::MIDI, 1);
1408                         list<boost::shared_ptr<MidiTrack> > midi_tracks;
1409                         midi_tracks = _editor->session()->new_midi_track (one_midi_port, one_midi_port, boost::shared_ptr<ARDOUR::PluginInfo>(), ARDOUR::Normal, 0, 1, region->name());
1410                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (midi_tracks.front());
1411                         if (rtav) {
1412                                 rtav->set_height (original->current_height());
1413                         }
1414                         return rtav;
1415                 }
1416         } catch (...) {
1417                 error << _("Could not create new track after region placed in the drop zone") << endmsg;
1418                 return 0;
1419         }
1420 }
1421
1422 void
1423 RegionMoveDrag::finished_copy (bool const changed_position, bool const /*changed_tracks*/, framecnt_t const drag_delta)
1424 {
1425         RegionSelection new_views;
1426         PlaylistSet modified_playlists;
1427         RouteTimeAxisView* new_time_axis_view = 0;
1428
1429         if (_brushing) {
1430                 /* all changes were made during motion event handlers */
1431
1432                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1433                         delete i->view;
1434                 }
1435
1436                 _editor->commit_reversible_command ();
1437                 return;
1438         }
1439
1440         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1441         PlaylistMapping playlist_mapping;
1442
1443         /* insert the regions into their new playlists */
1444         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1445
1446                 RouteTimeAxisView* dest_rtv = 0;
1447
1448                 if (i->view->region()->locked() || (i->view->region()->video_locked() && !_ignore_video_lock)) {
1449                         continue;
1450                 }
1451
1452                 framepos_t where;
1453
1454                 if (changed_position && !_x_constrained) {
1455                         where = i->view->region()->position() - drag_delta;
1456                 } else {
1457                         where = i->view->region()->position();
1458                 }
1459
1460                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1461                         /* dragged to drop zone */
1462
1463                         PlaylistMapping::iterator pm;
1464
1465                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1466                                 /* first region from this original playlist: create a new track */
1467                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1468                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1469                                 dest_rtv = new_time_axis_view;
1470                         } else {
1471                                 /* we already created a new track for regions from this playlist, use it */
1472                                 dest_rtv = pm->second;
1473                         }
1474                 } else {
1475                         /* destination time axis view is the one we dragged to */
1476                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1477                 }
1478
1479                 if (dest_rtv != 0) {
1480                         RegionView* new_view = insert_region_into_playlist (i->view->region(), dest_rtv, i->layer, where, modified_playlists);
1481                         if (new_view != 0) {
1482                                 new_views.push_back (new_view);
1483                         }
1484                 }
1485
1486                 /* Delete the copy of the view that was used for dragging. Need to play safe with the iterator
1487                    since deletion will automagically remove it from _views, thus invalidating i as an iterator.
1488                  */
1489
1490                 list<DraggingView>::const_iterator next = i;
1491                 ++next;
1492                 delete i->view;
1493                 i = next;
1494         }
1495
1496         /* If we've created new regions either by copying or moving
1497            to a new track, we want to replace the old selection with the new ones
1498         */
1499
1500         if (new_views.size() > 0) {
1501                 _editor->selection->set (new_views);
1502         }
1503
1504         /* write commands for the accumulated diffs for all our modified playlists */
1505         add_stateful_diff_commands_for_playlists (modified_playlists);
1506
1507         _editor->commit_reversible_command ();
1508 }
1509
1510 void
1511 RegionMoveDrag::finished_no_copy (
1512         bool const changed_position,
1513         bool const changed_tracks,
1514         framecnt_t const drag_delta
1515         )
1516 {
1517         RegionSelection new_views;
1518         PlaylistSet modified_playlists;
1519         PlaylistSet frozen_playlists;
1520         set<RouteTimeAxisView*> views_to_update;
1521         RouteTimeAxisView* new_time_axis_view = 0;
1522
1523         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1524         PlaylistMapping playlist_mapping;
1525
1526         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ) {
1527
1528                 RegionView* rv = i->view;
1529                 RouteTimeAxisView* dest_rtv = 0;
1530
1531                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1532                         ++i;
1533                         continue;
1534                 }
1535
1536                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1537                         /* dragged to drop zone */
1538
1539                         PlaylistMapping::iterator pm;
1540
1541                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1542                                 /* first region from this original playlist: create a new track */
1543                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1544                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1545                                 dest_rtv = new_time_axis_view;
1546                         } else {
1547                                 /* we already created a new track for regions from this playlist, use it */
1548                                 dest_rtv = pm->second;
1549                         }
1550
1551                 } else {
1552                         /* destination time axis view is the one we dragged to */
1553                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1554                 }
1555
1556                 assert (dest_rtv);
1557
1558                 double const dest_layer = i->layer;
1559
1560                 views_to_update.insert (dest_rtv);
1561
1562                 framepos_t where;
1563
1564                 if (changed_position && !_x_constrained) {
1565                         where = rv->region()->position() - drag_delta;
1566                 } else {
1567                         where = rv->region()->position();
1568                 }
1569
1570                 if (changed_tracks) {
1571
1572                         /* insert into new playlist */
1573
1574                         RegionView* new_view = insert_region_into_playlist (
1575                                 RegionFactory::create (rv->region (), true), dest_rtv, dest_layer, where, modified_playlists
1576                                 );
1577
1578                         if (new_view == 0) {
1579                                 ++i;
1580                                 continue;
1581                         }
1582
1583                         new_views.push_back (new_view);
1584
1585                         /* remove from old playlist */
1586
1587                         /* the region that used to be in the old playlist is not
1588                            moved to the new one - we use a copy of it. as a result,
1589                            any existing editor for the region should no longer be
1590                            visible.
1591                         */
1592                         rv->hide_region_editor();
1593
1594
1595                         remove_region_from_playlist (rv->region(), i->initial_playlist, modified_playlists);
1596
1597                 } else {
1598
1599                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1600
1601                         /* this movement may result in a crossfade being modified, or a layering change,
1602                            so we need to get undo data from the playlist as well as the region.
1603                         */
1604
1605                         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (playlist);
1606                         if (r.second) {
1607                                 playlist->clear_changes ();
1608                         }
1609
1610                         rv->region()->clear_changes ();
1611
1612                         /*
1613                            motion on the same track. plonk the previously reparented region
1614                            back to its original canvas group (its streamview).
1615                            No need to do anything for copies as they are fake regions which will be deleted.
1616                         */
1617
1618                         rv->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1619                         rv->get_canvas_group()->set_y_position (i->initial_y);
1620                         rv->drag_end ();
1621
1622                         /* just change the model */
1623                         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1624                                 playlist->set_layer (rv->region(), dest_layer);
1625                         }
1626
1627                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
1628
1629                         r = frozen_playlists.insert (playlist);
1630
1631                         if (r.second) {
1632                                 playlist->freeze ();
1633                         }
1634
1635                         rv->region()->set_position (where);
1636                         _editor->session()->add_command (new StatefulDiffCommand (rv->region()));
1637                 }
1638
1639                 if (changed_tracks) {
1640
1641                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1642                            was selected in all of them, then removing it from a playlist will have removed all
1643                            trace of it from _views (i.e. there were N regions selected, we removed 1,
1644                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1645                            corresponding regionview, and _views is now empty).
1646
1647                            This could have invalidated any and all iterators into _views.
1648
1649                            The heuristic we use here is: if the region selection is empty, break out of the loop
1650                            here. if the region selection is not empty, then restart the loop because we know that
1651                            we must have removed at least the region(view) we've just been working on as well as any
1652                            that we processed on previous iterations.
1653
1654                            EXCEPT .... if we are doing a copy drag, then _views hasn't been modified and
1655                            we can just iterate.
1656                         */
1657
1658
1659                         if (_views.empty()) {
1660                                 break;
1661                         } else {
1662                                 i = _views.begin();
1663                         }
1664
1665                 } else {
1666                         ++i;
1667                 }
1668         }
1669
1670         /* If we've created new regions either by copying or moving
1671            to a new track, we want to replace the old selection with the new ones
1672         */
1673
1674         if (new_views.size() > 0) {
1675                 _editor->selection->set (new_views);
1676         }
1677
1678         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1679                 (*p)->thaw();
1680         }
1681
1682         /* write commands for the accumulated diffs for all our modified playlists */
1683         add_stateful_diff_commands_for_playlists (modified_playlists);
1684         /* applies to _brushing */
1685         _editor->commit_reversible_command ();
1686
1687         /* We have futzed with the layering of canvas items on our streamviews.
1688            If any region changed layer, this will have resulted in the stream
1689            views being asked to set up their region views, and all will be well.
1690            If not, we might now have badly-ordered region views.  Ask the StreamViews
1691            involved to sort themselves out, just in case.
1692         */
1693
1694         for (set<RouteTimeAxisView*>::iterator i = views_to_update.begin(); i != views_to_update.end(); ++i) {
1695                 (*i)->view()->playlist_layered ((*i)->track ());
1696         }
1697 }
1698
1699 /** Remove a region from a playlist, clearing the diff history of the playlist first if necessary.
1700  *  @param region Region to remove.
1701  *  @param playlist playlist To remove from.
1702  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1703  *  that clear_changes () is only called once per playlist.
1704  */
1705 void
1706 RegionMoveDrag::remove_region_from_playlist (
1707         boost::shared_ptr<Region> region,
1708         boost::shared_ptr<Playlist> playlist,
1709         PlaylistSet& modified_playlists
1710         )
1711 {
1712         pair<set<boost::shared_ptr<Playlist> >::iterator, bool> r = modified_playlists.insert (playlist);
1713
1714         if (r.second) {
1715                 playlist->clear_changes ();
1716         }
1717
1718         playlist->remove_region (region); // should be no need to ripple; we better already have rippled the playlist in RegionRippleDrag
1719 }
1720
1721
1722 /** Insert a region into a playlist, handling the recovery of the resulting new RegionView, and
1723  *  clearing the playlist's diff history first if necessary.
1724  *  @param region Region to insert.
1725  *  @param dest_rtv Destination RouteTimeAxisView.
1726  *  @param dest_layer Destination layer.
1727  *  @param where Destination position.
1728  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1729  *  that clear_changes () is only called once per playlist.
1730  *  @return New RegionView, or 0 if no insert was performed.
1731  */
1732 RegionView *
1733 RegionMoveDrag::insert_region_into_playlist (
1734         boost::shared_ptr<Region> region,
1735         RouteTimeAxisView* dest_rtv,
1736         layer_t dest_layer,
1737         framecnt_t where,
1738         PlaylistSet& modified_playlists
1739         )
1740 {
1741         boost::shared_ptr<Playlist> dest_playlist = dest_rtv->playlist ();
1742         if (!dest_playlist) {
1743                 return 0;
1744         }
1745
1746         /* arrange to collect the new region view that will be created as a result of our playlist insertion */
1747         _new_region_view = 0;
1748         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &RegionMoveDrag::collect_new_region_view));
1749
1750         /* clear history for the playlist we are about to insert to, provided we haven't already done so */
1751         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (dest_playlist);
1752         if (r.second) {
1753                 dest_playlist->clear_changes ();
1754         }
1755
1756         dest_playlist->add_region (region, where);
1757
1758         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1759                 dest_playlist->set_layer (region, dest_layer);
1760         }
1761
1762         c.disconnect ();
1763
1764         assert (_new_region_view);
1765
1766         return _new_region_view;
1767 }
1768
1769 void
1770 RegionMoveDrag::collect_new_region_view (RegionView* rv)
1771 {
1772         _new_region_view = rv;
1773 }
1774
1775 void
1776 RegionMoveDrag::add_stateful_diff_commands_for_playlists (PlaylistSet const & playlists)
1777 {
1778         for (PlaylistSet::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
1779                 StatefulDiffCommand* c = new StatefulDiffCommand (*i);
1780                 if (!c->empty()) {
1781                         _editor->session()->add_command (c);
1782                 } else {
1783                         delete c;
1784                 }
1785         }
1786 }
1787
1788
1789 void
1790 RegionMoveDrag::aborted (bool movement_occurred)
1791 {
1792         if (_copy) {
1793
1794                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1795                         list<DraggingView>::const_iterator next = i;
1796                         ++next;
1797                         delete i->view;
1798                         i = next;
1799                 }
1800
1801                 _views.clear ();
1802
1803         } else {
1804                 RegionMotionDrag::aborted (movement_occurred);
1805         }
1806 }
1807
1808 void
1809 RegionMotionDrag::aborted (bool)
1810 {
1811         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1812
1813                 StreamView* sview = (*i)->view();
1814
1815                 if (sview) {
1816                         if (sview->layer_display() == Expanded) {
1817                                 sview->set_layer_display (Stacked);
1818                         }
1819                 }
1820         }
1821
1822         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1823                 RegionView* rv = i->view;
1824                 TimeAxisView* tv = &(rv->get_time_axis_view ());
1825                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1826                 assert (rtv);
1827                 rv->get_canvas_group()->reparent (rtv->view()->canvas_item());
1828                 rv->get_canvas_group()->set_y_position (0);
1829                 rv->drag_end ();
1830                 rv->move (-_total_x_delta, 0);
1831                 rv->set_height (rtv->view()->child_height ());
1832         }
1833 }
1834
1835 /** @param b true to brush, otherwise false.
1836  *  @param c true to make copies of the regions being moved, otherwise false.
1837  */
1838 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1839         : RegionMotionDrag (e, i, p, v, b)
1840         , _copy (c)
1841         , _new_region_view (0)
1842 {
1843         DEBUG_TRACE (DEBUG::Drags, "New RegionMoveDrag\n");
1844
1845         double speed = 1;
1846         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&_primary->get_time_axis_view ());
1847         if (rtv && rtv->is_track()) {
1848                 speed = rtv->track()->speed ();
1849         }
1850
1851         _last_frame_position = static_cast<framepos_t> (_primary->region()->position() / speed);
1852 }
1853
1854 void
1855 RegionMoveDrag::setup_pointer_frame_offset ()
1856 {
1857         _pointer_frame_offset = raw_grab_frame() - _last_frame_position;
1858 }
1859
1860 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, framepos_t pos)
1861         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1862 {
1863         DEBUG_TRACE (DEBUG::Drags, "New RegionInsertDrag\n");
1864
1865         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1866                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1867
1868         _primary = v->view()->create_region_view (r, false, false);
1869
1870         _primary->get_canvas_group()->show ();
1871         _primary->set_position (pos, 0);
1872         _views.push_back (DraggingView (_primary, this, v));
1873
1874         _last_frame_position = pos;
1875
1876         _item = _primary->get_canvas_group ();
1877 }
1878
1879 void
1880 RegionInsertDrag::finished (GdkEvent *, bool)
1881 {
1882         int pos = _views.front().time_axis_view;
1883         assert(pos >= 0 && pos < (int)_time_axis_views.size());
1884
1885         RouteTimeAxisView* dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[pos]);
1886
1887         _primary->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1888         _primary->get_canvas_group()->set_y_position (0);
1889
1890         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1891
1892         _editor->begin_reversible_command (Operations::insert_region);
1893         playlist->clear_changes ();
1894         playlist->add_region (_primary->region (), _last_frame_position);
1895
1896         // Mixbus doesn't seem to ripple when inserting regions from the list: should we? yes, probably
1897         if (Config->get_edit_mode() == Ripple) {
1898                 playlist->ripple (_last_frame_position, _primary->region()->length(), _primary->region());
1899         }
1900
1901         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1902         _editor->commit_reversible_command ();
1903
1904         delete _primary;
1905         _primary = 0;
1906         _views.clear ();
1907 }
1908
1909 void
1910 RegionInsertDrag::aborted (bool)
1911 {
1912         delete _primary;
1913         _primary = 0;
1914         _views.clear ();
1915 }
1916
1917 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1918         : RegionMoveDrag (e, i, p, v, false, false)
1919 {
1920         DEBUG_TRACE (DEBUG::Drags, "New RegionSpliceDrag\n");
1921 }
1922
1923 struct RegionSelectionByPosition {
1924         bool operator() (RegionView*a, RegionView* b) {
1925                 return a->region()->position () < b->region()->position();
1926         }
1927 };
1928
1929 void
1930 RegionSpliceDrag::motion (GdkEvent* event, bool)
1931 {
1932         /* Which trackview is this ? */
1933
1934         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
1935         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1936
1937         /* The region motion is only processed if the pointer is over
1938            an audio track.
1939         */
1940
1941         if (!tv || !tv->is_track()) {
1942                 /* To make sure we hide the verbose canvas cursor when the mouse is
1943                    not held over an audio track.
1944                 */
1945                 _editor->verbose_cursor()->hide ();
1946                 return;
1947         } else {
1948                 _editor->verbose_cursor()->show ();
1949         }
1950
1951         int dir;
1952
1953         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1954                 dir = 1;
1955         } else {
1956                 dir = -1;
1957         }
1958
1959         RegionSelection copy;
1960         _editor->selection->regions.by_position(copy);
1961
1962         framepos_t const pf = adjusted_current_frame (event);
1963
1964         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1965
1966                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1967
1968                 if (!atv) {
1969                         continue;
1970                 }
1971
1972                 boost::shared_ptr<Playlist> playlist;
1973
1974                 if ((playlist = atv->playlist()) == 0) {
1975                         continue;
1976                 }
1977
1978                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1979                         continue;
1980                 }
1981
1982                 if (dir > 0) {
1983                         if (pf < (*i)->region()->last_frame() + 1) {
1984                                 continue;
1985                         }
1986                 } else {
1987                         if (pf > (*i)->region()->first_frame()) {
1988                                 continue;
1989                         }
1990                 }
1991
1992
1993                 playlist->shuffle ((*i)->region(), dir);
1994         }
1995 }
1996
1997 void
1998 RegionSpliceDrag::finished (GdkEvent* event, bool movement_occurred)
1999 {
2000         RegionMoveDrag::finished (event, movement_occurred);
2001 }
2002
2003 void
2004 RegionSpliceDrag::aborted (bool)
2005 {
2006         /* XXX: TODO */
2007 }
2008
2009 /***
2010  * ripple mode...
2011  */
2012
2013 void
2014 RegionRippleDrag::add_all_after_to_views(TimeAxisView *tav, framepos_t where, const RegionSelection &exclude, bool drag_in_progress)
2015 {
2016
2017         boost::shared_ptr<RegionList> rl = tav->playlist()->regions_with_start_within (Evoral::Range<framepos_t>(where, max_framepos));
2018
2019         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(tav);
2020         RegionSelection to_ripple;
2021         for (RegionList::iterator i = rl->begin(); i != rl->end(); ++i) {
2022                 if ((*i)->position() >= where) {
2023                         to_ripple.push_back (rtv->view()->find_view(*i));
2024                 }
2025         }
2026
2027         for (RegionSelection::iterator i = to_ripple.begin(); i != to_ripple.end(); ++i) {
2028                 if (!exclude.contains (*i)) {
2029                         // the selection has already been added to _views
2030
2031                         if (drag_in_progress) {
2032                                 // do the same things that RegionMotionDrag::motion does when
2033                                 // first_move is true, for the region views that we're adding
2034                                 // to _views this time
2035
2036                                 (*i)->drag_start();
2037                                 ArdourCanvas::Item* rvg = (*i)->get_canvas_group();
2038                                 Duple rv_canvas_offset = rvg->item_to_canvas (Duple (0,0));
2039                                 Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
2040                                 rvg->reparent (_editor->_drag_motion_group);
2041
2042                                 // we only need to move in the y direction
2043                                 Duple fudge = rv_canvas_offset - dmg_canvas_offset;
2044                                 fudge.x = 0;
2045                                 rvg->move (fudge);
2046
2047                         }
2048                         _views.push_back (DraggingView (*i, this, tav));
2049                 }
2050         }
2051 }
2052
2053 void
2054 RegionRippleDrag::remove_unselected_from_views(framecnt_t amount, bool move_regions)
2055 {
2056
2057         for (std::list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ) {
2058                 // we added all the regions after the selection
2059
2060                 std::list<DraggingView>::iterator to_erase = i++;
2061                 if (!_editor->selection->regions.contains (to_erase->view)) {
2062                         // restore the non-selected regions to their original playlist & positions,
2063                         // and then ripple them back by the length of the regions that were dragged away
2064                         // do the same things as RegionMotionDrag::aborted
2065
2066                         RegionView *rv = to_erase->view;
2067                         TimeAxisView* tv = &(rv->get_time_axis_view ());
2068                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
2069                         assert (rtv);
2070
2071                         // plonk them back onto their own track
2072                         rv->get_canvas_group()->reparent(rtv->view()->canvas_item());
2073                         rv->get_canvas_group()->set_y_position (0);
2074                         rv->drag_end ();
2075
2076                         if (move_regions) {
2077                                 // move the underlying region to match the view
2078                                 rv->region()->set_position (rv->region()->position() + amount);
2079                         } else {
2080                                 // restore the view to match the underlying region's original position
2081                                 rv->move(-amount, 0);   // second parameter is y delta - seems 0 is OK
2082                         }
2083
2084                         rv->set_height (rtv->view()->child_height ());
2085                         _views.erase (to_erase);
2086                 }
2087         }
2088 }
2089
2090 bool
2091 RegionRippleDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
2092 {
2093         if (RegionMotionDrag::y_movement_allowed (delta_track, delta_layer, skip_invisible)) {
2094                 if (delta_track) {
2095                         return allow_moves_across_tracks;
2096                 } else {
2097                         return true;
2098                 }
2099         }
2100         return false;
2101 }
2102
2103 RegionRippleDrag::RegionRippleDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2104         : RegionMoveDrag (e, i, p, v, false, false)
2105 {
2106         DEBUG_TRACE (DEBUG::Drags, "New RegionRippleDrag\n");
2107         // compute length of selection
2108         RegionSelection selected_regions = _editor->selection->regions;
2109         selection_length = selected_regions.end_frame() - selected_regions.start();
2110
2111         // we'll only allow dragging to another track in ripple mode if all the regions
2112         // being dragged start off on the same track
2113         allow_moves_across_tracks = (selected_regions.playlists().size() == 1);
2114         prev_tav = NULL;
2115         prev_amount = 0;
2116         exclude = new RegionList;
2117         for (RegionSelection::iterator i =selected_regions.begin(); i != selected_regions.end(); ++i) {
2118                 exclude->push_back((*i)->region());
2119         }
2120
2121         // also add regions before start of selection to exclude, to be consistent with how Mixbus does ripple
2122         RegionSelection copy;
2123         selected_regions.by_position(copy); // get selected regions sorted by position into copy
2124
2125         std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = copy.playlists();
2126         std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2127
2128         for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2129                 // find ripple start point on each applicable playlist
2130                 RegionView *first_selected_on_this_track = NULL;
2131                 for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
2132                         if ((*i)->region()->playlist() == (*pi)) {
2133                                 // region is on this playlist - it's the first, because they're sorted
2134                                 first_selected_on_this_track = *i;
2135                                 break;
2136                         }
2137                 }
2138                 assert (first_selected_on_this_track); // we should always find the region in one of the playlists...
2139                 add_all_after_to_views (
2140                                 &first_selected_on_this_track->get_time_axis_view(),
2141                                 first_selected_on_this_track->region()->position(),
2142                                 selected_regions, false);
2143         }
2144
2145         if (allow_moves_across_tracks) {
2146                 orig_tav = &(*selected_regions.begin())->get_time_axis_view();
2147         } else {
2148                 orig_tav = NULL;
2149         }
2150
2151 }
2152
2153 void
2154 RegionRippleDrag::motion (GdkEvent* event, bool first_move)
2155 {
2156         /* Which trackview is this ? */
2157
2158         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
2159         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
2160
2161         /* The region motion is only processed if the pointer is over
2162            an audio track.
2163          */
2164
2165         if (!tv || !tv->is_track()) {
2166                 /* To make sure we hide the verbose canvas cursor when the mouse is
2167                    not held over an audiotrack.
2168                  */
2169                 _editor->verbose_cursor()->hide ();
2170                 return;
2171         }
2172
2173         framepos_t where = adjusted_current_frame (event);
2174         assert (where >= 0);
2175         framepos_t after;
2176         double delta = compute_x_delta (event, &after);
2177
2178         framecnt_t amount = _editor->pixel_to_sample (delta);
2179
2180         if (allow_moves_across_tracks) {
2181                 // all the originally selected regions were on the same track
2182
2183                 framecnt_t adjust = 0;
2184                 if (prev_tav && tv != prev_tav) {
2185                         // dragged onto a different track
2186                         // remove the unselected regions from _views, restore them to their original positions
2187                         // and add the regions after the drop point on the new playlist to _views instead.
2188                         // undo the effect of rippling the previous playlist, and include the effect of removing
2189                         // the dragged region(s) from this track
2190
2191                         remove_unselected_from_views (prev_amount, false);
2192                         // ripple previous playlist according to the regions that have been removed onto the new playlist
2193                         prev_tav->playlist()->ripple(prev_position, -selection_length, exclude);
2194                         prev_amount = 0;
2195
2196                         // move just the selected regions
2197                         RegionMoveDrag::motion(event, first_move);
2198
2199                         // ensure that the ripple operation on the new playlist inserts selection_length time
2200                         adjust = selection_length;
2201                         // ripple the new current playlist
2202                         tv->playlist()->ripple (where, amount+adjust, exclude);
2203
2204                         // add regions after point where drag entered this track to subsequent ripples
2205                         add_all_after_to_views (tv, where, _editor->selection->regions, true);
2206
2207                 } else {
2208                         // motion on same track
2209                         RegionMoveDrag::motion(event, first_move);
2210                 }
2211                 prev_tav = tv;
2212
2213                 // remember what we've done to this playlist so we can undo it if the selection is dragged to another track
2214                 prev_position = where;
2215         } else {
2216                 // selection encompasses multiple tracks - just drag
2217                 // cross-track drags are forbidden
2218                 RegionMoveDrag::motion(event, first_move);
2219         }
2220
2221         if (!_x_constrained) {
2222                 prev_amount += amount;
2223         }
2224
2225         _last_frame_position = after;
2226 }
2227
2228 void
2229 RegionRippleDrag::finished (GdkEvent* event, bool movement_occurred)
2230 {
2231         if (!movement_occurred) {
2232
2233                 /* just a click */
2234
2235                 if (was_double_click() && !_views.empty()) {
2236                         DraggingView dv = _views.front();
2237                         dv.view->show_region_editor ();
2238
2239                 }
2240
2241                 return;
2242         }
2243
2244         _editor->begin_reversible_command(_("Ripple drag"));
2245
2246         // remove the regions being rippled from the dragging view, updating them to
2247         // their new positions
2248         remove_unselected_from_views (prev_amount, true);
2249
2250         if (allow_moves_across_tracks) {
2251                 if (orig_tav) {
2252                         // if regions were dragged across tracks, we've rippled any later
2253                         // regions on the track the regions were dragged off, so we need
2254                         // to add the original track to the undo record
2255                         orig_tav->playlist()->clear_changes();
2256                         vector<Command*> cmds;
2257                         orig_tav->playlist()->rdiff (cmds);
2258                         _editor->session()->add_commands (cmds);
2259                 }
2260                 if (prev_tav && prev_tav != orig_tav) {
2261                         prev_tav->playlist()->clear_changes();
2262                         vector<Command*> cmds;
2263                         prev_tav->playlist()->rdiff (cmds);
2264                         _editor->session()->add_commands (cmds);
2265                 }
2266         } else {
2267                 // selection spanned multiple tracks - all will need adding to undo record
2268
2269                 std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = _editor->selection->regions.playlists();
2270                 std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2271
2272                 for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2273                         (*pi)->clear_changes();
2274                         vector<Command*> cmds;
2275                         (*pi)->rdiff (cmds);
2276                         _editor->session()->add_commands (cmds);
2277                 }
2278         }
2279
2280         // other modified playlists are added to undo by RegionMoveDrag::finished()
2281         RegionMoveDrag::finished (event, movement_occurred);
2282         _editor->commit_reversible_command();
2283 }
2284
2285 void
2286 RegionRippleDrag::aborted (bool movement_occurred)
2287 {
2288         RegionMoveDrag::aborted (movement_occurred);
2289         _views.clear ();
2290 }
2291
2292
2293 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
2294         : Drag (e, i),
2295           _view (dynamic_cast<MidiTimeAxisView*> (v))
2296 {
2297         DEBUG_TRACE (DEBUG::Drags, "New RegionCreateDrag\n");
2298
2299         assert (_view);
2300 }
2301
2302 void
2303 RegionCreateDrag::motion (GdkEvent* event, bool first_move)
2304 {
2305         if (first_move) {
2306                 _editor->begin_reversible_command (_("create region"));
2307                 _region = add_midi_region (_view, false);
2308                 _view->playlist()->freeze ();
2309         } else {
2310                 if (_region) {
2311                         framepos_t const f = adjusted_current_frame (event);
2312                         if (f < grab_frame()) {
2313                                 _region->set_initial_position (f);
2314                         }
2315
2316                         /* Don't use a zero-length region, and subtract 1 frame from the snapped length
2317                            so that if this region is duplicated, its duplicate starts on
2318                            a snap point rather than 1 frame after a snap point.  Otherwise things get
2319                            a bit confusing as if a region starts 1 frame after a snap point, one cannot
2320                            place snapped notes at the start of the region.
2321                         */
2322
2323                         framecnt_t const len = (framecnt_t) fabs ((double)(f - grab_frame () - 1));
2324                         _region->set_length (len < 1 ? 1 : len);
2325                 }
2326         }
2327 }
2328
2329 void
2330 RegionCreateDrag::finished (GdkEvent*, bool movement_occurred)
2331 {
2332         if (!movement_occurred) {
2333                 add_midi_region (_view, true);
2334         } else {
2335                 _view->playlist()->thaw ();
2336                 _editor->commit_reversible_command();
2337         }
2338 }
2339
2340 void
2341 RegionCreateDrag::aborted (bool)
2342 {
2343         if (_region) {
2344                 _view->playlist()->thaw ();
2345         }
2346
2347         /* XXX */
2348 }
2349
2350 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
2351         : Drag (e, i)
2352         , region (0)
2353         , relative (false)
2354         , at_front (true)
2355         , _was_selected (false)
2356         , _snap_delta (0)
2357 {
2358         DEBUG_TRACE (DEBUG::Drags, "New NoteResizeDrag\n");
2359 }
2360
2361 void
2362 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*ignored*/)
2363 {
2364         Gdk::Cursor* cursor;
2365         NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2366         assert (cnote);
2367         float x_fraction = cnote->mouse_x_fraction ();
2368
2369         if (x_fraction > 0.0 && x_fraction < 0.25) {
2370                 cursor = _editor->cursors()->left_side_trim;
2371                 at_front = true;
2372         } else  {
2373                 cursor = _editor->cursors()->right_side_trim;
2374                 at_front = false;
2375         }
2376
2377         Drag::start_grab (event, cursor);
2378
2379         region = &cnote->region_view();
2380
2381         double temp;
2382         temp = region->snap_to_pixel (cnote->x0 (), true);
2383         _snap_delta = temp - cnote->x0 ();
2384
2385         _item->grab ();
2386
2387         if (event->motion.state & ArdourKeyboard::note_size_relative_modifier ()) {
2388                 relative = false;
2389         } else {
2390                 relative = true;
2391         }
2392         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2393         if (ms.size() > 1) {
2394                 /* has to be relative, may make no sense otherwise */
2395                 relative = true;
2396         }
2397
2398         if (!(_was_selected = cnote->selected())) {
2399
2400                 /* tertiary-click means extend selection - we'll do that on button release,
2401                    so don't add it here, because otherwise we make it hard to figure
2402                    out the "extend-to" range.
2403                 */
2404
2405                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2406
2407                 if (!extend) {
2408                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2409
2410                         if (add) {
2411                                 region->note_selected (cnote, true);
2412                         } else {
2413                                 _editor->get_selection().clear_points();
2414                                 region->unique_select (cnote);
2415                         }
2416                 }
2417         }
2418 }
2419
2420 void
2421 NoteResizeDrag::motion (GdkEvent* event, bool first_move)
2422 {
2423         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2424         if (first_move) {
2425                 _editor->begin_reversible_command (_("resize notes"));
2426
2427                 for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
2428                         MidiRegionSelection::iterator next;
2429                         next = r;
2430                         ++next;
2431                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2432                         if (mrv) {
2433                                 mrv->begin_resizing (at_front);
2434                         }
2435                         r = next;
2436                 }
2437         }
2438
2439         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2440                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2441                 assert (nb);
2442                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2443                 if (mrv) {
2444                         double sd = 0.0;
2445                         bool snap = true;
2446                         bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2447
2448                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2449                                 if (_editor->snap_mode () != SnapOff) {
2450                                         snap = false;
2451                                 }
2452                         } else {
2453                                 if (_editor->snap_mode () == SnapOff) {
2454                                         snap = false;
2455                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2456                                         if (apply_snap_delta) {
2457                                                 snap = true;
2458                                         }
2459                                 }
2460                         }
2461
2462                         if (apply_snap_delta) {
2463                                 sd = _snap_delta;
2464                         }
2465
2466                         mrv->update_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2467                 }
2468         }
2469 }
2470
2471 void
2472 NoteResizeDrag::finished (GdkEvent* event, bool movement_occurred)
2473 {
2474         if (!movement_occurred) {
2475                 /* no motion - select note */
2476                 NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2477                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
2478                     _editor->current_mouse_mode() == Editing::MouseDraw) {
2479
2480                         bool changed = false;
2481
2482                         if (_was_selected) {
2483                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2484                                 if (add) {
2485                                         region->note_deselected (cnote);
2486                                         changed = true;
2487                                 } else {
2488                                         _editor->get_selection().clear_points();
2489                                         region->unique_select (cnote);
2490                                         changed = true;
2491                                 }
2492                         } else {
2493                                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2494                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2495
2496                                 if (!extend && !add && region->selection_size() > 1) {
2497                                         _editor->get_selection().clear_points();
2498                                         region->unique_select (cnote);
2499                                         changed = true;
2500                                 } else if (extend) {
2501                                         region->note_selected (cnote, true, true);
2502                                         changed = true;
2503                                 } else {
2504                                         /* it was added during button press */
2505                                         changed = true;
2506                                 }
2507                         }
2508
2509                         if (changed) {
2510                                 _editor->begin_reversible_selection_op(X_("Resize Select Note Release"));
2511                                 _editor->commit_reversible_selection_op();
2512                         }
2513                 }
2514
2515                 return;
2516         }
2517
2518         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2519         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2520                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2521                 assert (nb);
2522                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2523                 double sd = 0.0;
2524                 bool snap = true;
2525                 bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2526                 if (mrv) {
2527                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2528                                 if (_editor->snap_mode () != SnapOff) {
2529                                         snap = false;
2530                                 }
2531                         } else {
2532                                 if (_editor->snap_mode () == SnapOff) {
2533                                         snap = false;
2534                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2535                                         if (apply_snap_delta) {
2536                                                 snap = true;
2537                                         }
2538                                 }
2539                         }
2540
2541                         if (apply_snap_delta) {
2542                                 sd = _snap_delta;
2543                         }
2544
2545                         mrv->commit_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2546                 }
2547         }
2548
2549         _editor->commit_reversible_command ();
2550 }
2551
2552 void
2553 NoteResizeDrag::aborted (bool)
2554 {
2555         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2556         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2557                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2558                 if (mrv) {
2559                         mrv->abort_resizing ();
2560                 }
2561         }
2562 }
2563
2564 AVDraggingView::AVDraggingView (RegionView* v)
2565         : view (v)
2566 {
2567         initial_position = v->region()->position ();
2568 }
2569
2570 VideoTimeLineDrag::VideoTimeLineDrag (Editor* e, ArdourCanvas::Item* i)
2571         : Drag (e, i)
2572 {
2573         DEBUG_TRACE (DEBUG::Drags, "New VideoTimeLineDrag\n");
2574
2575         RegionSelection rs;
2576         TrackViewList empty;
2577         empty.clear();
2578         _editor->get_regions_after(rs, (framepos_t) 0, empty);
2579         std::list<RegionView*> views = rs.by_layer();
2580
2581         _stuck = false;
2582         for (list<RegionView*>::iterator i = views.begin(); i != views.end(); ++i) {
2583                 RegionView* rv = (*i);
2584                 if (!rv->region()->video_locked()) {
2585                         continue;
2586                 }
2587                 if (rv->region()->locked()) {
2588                         _stuck = true;
2589                 }
2590                 _views.push_back (AVDraggingView (rv));
2591         }
2592 }
2593
2594 void
2595 VideoTimeLineDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2596 {
2597         Drag::start_grab (event);
2598         if (_editor->session() == 0) {
2599                 return;
2600         }
2601
2602         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
2603                 _stuck = false;
2604                 _views.clear();
2605         }
2606
2607         if (_stuck) {
2608                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2609                 return;
2610         }
2611
2612         _startdrag_video_offset=ARDOUR_UI::instance()->video_timeline->get_offset();
2613         _max_backwards_drag = (
2614                           ARDOUR_UI::instance()->video_timeline->get_duration()
2615                         + ARDOUR_UI::instance()->video_timeline->get_offset()
2616                         - ceil(ARDOUR_UI::instance()->video_timeline->get_apv())
2617                         );
2618
2619         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2620                 if (i->initial_position < _max_backwards_drag || _max_backwards_drag < 0) {
2621                         _max_backwards_drag = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv (i->initial_position);
2622                 }
2623         }
2624         DEBUG_TRACE (DEBUG::Drags, string_compose("VideoTimeLineDrag: max backwards-drag: %1\n", _max_backwards_drag));
2625
2626         char buf[128];
2627         Timecode::Time timecode;
2628         _editor->session()->sample_to_timecode(abs(_startdrag_video_offset), timecode, true /* use_offset */, false /* use_subframes */ );
2629         snprintf (buf, sizeof (buf), "Video Start:\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, (_startdrag_video_offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
2630         show_verbose_cursor_text (buf);
2631 }
2632
2633 void
2634 VideoTimeLineDrag::motion (GdkEvent* event, bool first_move)
2635 {
2636         if (_editor->session() == 0) {
2637                 return;
2638         }
2639         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2640                 return;
2641         }
2642         if (_stuck) {
2643                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2644                 return;
2645         }
2646
2647         framecnt_t dt = adjusted_current_frame (event) - raw_grab_frame() + _pointer_frame_offset;
2648         dt = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(_startdrag_video_offset+dt) - _startdrag_video_offset;
2649
2650         if (_max_backwards_drag >= 0 && dt <= - _max_backwards_drag) {
2651                 dt = - _max_backwards_drag;
2652         }
2653
2654         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset+dt);
2655         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2656
2657         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2658                 RegionView* rv = i->view;
2659                 DEBUG_TRACE (DEBUG::Drags, string_compose("SHIFT REGION at %1 by %2\n", i->initial_position, dt));
2660                 if (first_move) {
2661                         rv->drag_start ();
2662                         rv->region()->clear_changes ();
2663                         rv->region()->suspend_property_changes();
2664                 }
2665                 rv->region()->set_position(i->initial_position + dt);
2666                 rv->region_changed(ARDOUR::Properties::position);
2667         }
2668
2669         const framepos_t offset = ARDOUR_UI::instance()->video_timeline->get_offset();
2670         Timecode::Time timecode;
2671         Timecode::Time timediff;
2672         char buf[128];
2673         _editor->session()->sample_to_timecode(abs(offset), timecode, true /* use_offset */, false /* use_subframes */ );
2674         _editor->session()->sample_to_timecode(abs(dt), timediff, false /* use_offset */, false /* use_subframes */ );
2675         snprintf (buf, sizeof (buf),
2676                         "%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2677                         "\n%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2678                         , _("Video Start:"),
2679                                 (offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames
2680                         , _("Diff:"),
2681                                 (dt<0?'-':' '), timediff.hours, timediff.minutes, timediff.seconds, timediff.frames
2682                                 );
2683         show_verbose_cursor_text (buf);
2684 }
2685
2686 void
2687 VideoTimeLineDrag::finished (GdkEvent * /*event*/, bool movement_occurred)
2688 {
2689         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2690                 return;
2691         }
2692         if (_stuck) {
2693                 return;
2694         }
2695
2696         if (!movement_occurred || ! _editor->session()) {
2697                 return;
2698         }
2699
2700         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2701
2702         _editor->begin_reversible_command (_("Move Video"));
2703
2704         XMLNode &before = ARDOUR_UI::instance()->video_timeline->get_state();
2705         ARDOUR_UI::instance()->video_timeline->save_undo();
2706         XMLNode &after = ARDOUR_UI::instance()->video_timeline->get_state();
2707         _editor->session()->add_command(new MementoCommand<VideoTimeLine>(*(ARDOUR_UI::instance()->video_timeline), &before, &after));
2708
2709         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2710                 i->view->drag_end();
2711                 i->view->region()->resume_property_changes ();
2712
2713                 _editor->session()->add_command (new StatefulDiffCommand (i->view->region()));
2714         }
2715
2716         _editor->session()->maybe_update_session_range(
2717                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset(), (ARDOUR::frameoffset_t) 0),
2718                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset() + ARDOUR_UI::instance()->video_timeline->get_duration(), (ARDOUR::frameoffset_t) 0)
2719                         );
2720
2721
2722         _editor->commit_reversible_command ();
2723 }
2724
2725 void
2726 VideoTimeLineDrag::aborted (bool)
2727 {
2728         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2729                 return;
2730         }
2731         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset);
2732         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2733
2734         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2735                 i->view->region()->resume_property_changes ();
2736                 i->view->region()->set_position(i->initial_position);
2737         }
2738 }
2739
2740 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool preserve_fade_anchor)
2741         : RegionDrag (e, i, p, v)
2742         , _operation (StartTrim)
2743         , _preserve_fade_anchor (preserve_fade_anchor)
2744         , _jump_position_when_done (false)
2745 {
2746         DEBUG_TRACE (DEBUG::Drags, "New TrimDrag\n");
2747 }
2748
2749 void
2750 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2751 {
2752         double speed = 1.0;
2753         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2754         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2755
2756         if (tv && tv->is_track()) {
2757                 speed = tv->track()->speed();
2758         }
2759
2760         framepos_t const region_start = (framepos_t) (_primary->region()->position() / speed);
2761         framepos_t const region_end = (framepos_t) (_primary->region()->last_frame() / speed);
2762         framecnt_t const region_length = (framecnt_t) (_primary->region()->length() / speed);
2763
2764         framepos_t const pf = adjusted_current_frame (event);
2765         setup_snap_delta (region_start);
2766
2767         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_contents_modifier ())) {
2768                 /* Move the contents of the region around without changing the region bounds */
2769                 _operation = ContentsTrim;
2770                 Drag::start_grab (event, _editor->cursors()->trimmer);
2771         } else {
2772                 /* These will get overridden for a point trim.*/
2773                 if (pf < (region_start + region_length/2)) {
2774                         /* closer to front */
2775                         _operation = StartTrim;
2776                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2777                                 Drag::start_grab (event, _editor->cursors()->anchored_left_side_trim);
2778                         } else {
2779                                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
2780                         }
2781                 } else {
2782                         /* closer to end */
2783                         _operation = EndTrim;
2784                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2785                                 Drag::start_grab (event, _editor->cursors()->anchored_right_side_trim);
2786                         } else {
2787                                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
2788                         }
2789                 }
2790         }
2791         /* jump trim disabled for now
2792         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::trim_jump_modifier ())) {
2793                 _jump_position_when_done = true;
2794         }
2795         */
2796
2797         switch (_operation) {
2798         case StartTrim:
2799                 show_verbose_cursor_time (region_start);
2800                 break;
2801         case EndTrim:
2802                 show_verbose_cursor_duration (region_start, region_end);
2803                 break;
2804         case ContentsTrim:
2805                 show_verbose_cursor_time (pf);
2806                 break;
2807         }
2808
2809         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2810                 i->view->region()->suspend_property_changes ();
2811         }
2812 }
2813
2814 void
2815 TrimDrag::motion (GdkEvent* event, bool first_move)
2816 {
2817         RegionView* rv = _primary;
2818
2819         double speed = 1.0;
2820         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2821         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2822         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
2823         frameoffset_t frame_delta = 0;
2824
2825         if (tv && tv->is_track()) {
2826                 speed = tv->track()->speed();
2827         }
2828         framecnt_t adj_frame = adjusted_frame (_drags->current_pointer_frame () + snap_delta (event->button.state), event, true);
2829         framecnt_t dt = adj_frame - raw_grab_frame () + _pointer_frame_offset - snap_delta (event->button.state);
2830
2831         if (first_move) {
2832
2833                 string trim_type;
2834
2835                 switch (_operation) {
2836                 case StartTrim:
2837                         trim_type = "Region start trim";
2838                         break;
2839                 case EndTrim:
2840                         trim_type = "Region end trim";
2841                         break;
2842                 case ContentsTrim:
2843                         trim_type = "Region content trim";
2844                         break;
2845                 default:
2846                         assert(0);
2847                         break;
2848                 }
2849
2850                 _editor->begin_reversible_command (trim_type);
2851
2852                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2853                         RegionView* rv = i->view;
2854                         rv->enable_display (false);
2855                         rv->region()->playlist()->clear_owned_changes ();
2856
2857                         if (_operation == StartTrim) {
2858                                 rv->trim_front_starting ();
2859                         }
2860
2861                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (rv);
2862
2863                         if (arv) {
2864                                 arv->temporarily_hide_envelope ();
2865                                 arv->drag_start ();
2866                         }
2867
2868                         boost::shared_ptr<Playlist> pl = rv->region()->playlist();
2869                         insert_result = _editor->motion_frozen_playlists.insert (pl);
2870
2871                         if (insert_result.second) {
2872                                 pl->freeze();
2873                         }
2874                 }
2875         }
2876
2877         bool non_overlap_trim = false;
2878
2879         if (event && Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::trim_overlap_modifier ())) {
2880                 non_overlap_trim = true;
2881         }
2882
2883         /* contstrain trim to fade length */
2884         if (_preserve_fade_anchor) {
2885                 switch (_operation) {
2886                         case StartTrim:
2887                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2888                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2889                                         if (!arv) continue;
2890                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2891                                         if (ar->locked()) continue;
2892                                         framecnt_t len = ar->fade_in()->back()->when;
2893                                         if (len < dt) dt = min(dt, len);
2894                                 }
2895                                 break;
2896                         case EndTrim:
2897                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2898                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2899                                         if (!arv) continue;
2900                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2901                                         if (ar->locked()) continue;
2902                                         framecnt_t len = ar->fade_out()->back()->when;
2903                                         if (len < -dt) dt = max(dt, -len);
2904                                 }
2905                                 break;
2906                         case ContentsTrim:
2907                                 break;
2908                 }
2909         }
2910
2911
2912         switch (_operation) {
2913         case StartTrim:
2914                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2915                         bool changed = i->view->trim_front (i->initial_position + dt, non_overlap_trim);
2916                         if (changed && _preserve_fade_anchor) {
2917                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2918                                 if (arv) {
2919                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2920                                         framecnt_t len = ar->fade_in()->back()->when;
2921                                         framecnt_t diff = ar->first_frame() - i->initial_position;
2922                                         framepos_t new_length = len - diff;
2923                                         i->anchored_fade_length = min (ar->length(), new_length);
2924                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, true  /*START*/ );
2925                                         arv->reset_fade_in_shape_width (ar, i->anchored_fade_length, true);
2926                                 }
2927                         }
2928                 }
2929                 break;
2930
2931         case EndTrim:
2932                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2933                         bool changed = i->view->trim_end (i->initial_end + dt, non_overlap_trim);
2934                         if (changed && _preserve_fade_anchor) {
2935                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2936                                 if (arv) {
2937                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2938                                         framecnt_t len = ar->fade_out()->back()->when;
2939                                         framecnt_t diff = 1 + ar->last_frame() - i->initial_end;
2940                                         framepos_t new_length = len + diff;
2941                                         i->anchored_fade_length = min (ar->length(), new_length);
2942                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, false  /*END*/ );
2943                                         arv->reset_fade_out_shape_width (ar, i->anchored_fade_length, true);
2944                                 }
2945                         }
2946                 }
2947                 break;
2948
2949         case ContentsTrim:
2950                 {
2951                         frame_delta = (last_pointer_frame() - adjusted_current_frame(event));
2952
2953                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2954                                 i->view->move_contents (frame_delta);
2955                         }
2956                 }
2957                 break;
2958         }
2959
2960         switch (_operation) {
2961         case StartTrim:
2962                 show_verbose_cursor_time ((framepos_t) (rv->region()->position() / speed));
2963                 break;
2964         case EndTrim:
2965                 show_verbose_cursor_duration ((framepos_t)  rv->region()->position() / speed, (framepos_t) rv->region()->last_frame() / speed);
2966                 break;
2967         case ContentsTrim:
2968                 // show_verbose_cursor_time (frame_delta);
2969                 break;
2970         }
2971 }
2972
2973 void
2974 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
2975 {
2976         if (movement_occurred) {
2977                 motion (event, false);
2978
2979                 if (_operation == StartTrim) {
2980                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2981                                 {
2982                                         /* This must happen before the region's StatefulDiffCommand is created, as it may
2983                                            `correct' (ahem) the region's _start from being negative to being zero.  It
2984                                            needs to be zero in the undo record.
2985                                         */
2986                                         i->view->trim_front_ending ();
2987                                 }
2988                                 if (_preserve_fade_anchor) {
2989                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2990                                         if (arv) {
2991                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2992                                                 arv->reset_fade_in_shape_width (ar, i->anchored_fade_length);
2993                                                 ar->set_fade_in_length(i->anchored_fade_length);
2994                                                 ar->set_fade_in_active(true);
2995                                         }
2996                                 }
2997                                 if (_jump_position_when_done) {
2998                                         i->view->region()->set_position (i->initial_position);
2999                                 }
3000                         }
3001                 } else if (_operation == EndTrim) {
3002                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3003                                 if (_preserve_fade_anchor) {
3004                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
3005                                         if (arv) {
3006                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
3007                                                 arv->reset_fade_out_shape_width (ar, i->anchored_fade_length);
3008                                                 ar->set_fade_out_length(i->anchored_fade_length);
3009                                                 ar->set_fade_out_active(true);
3010                                         }
3011                                 }
3012                                 if (_jump_position_when_done) {
3013                                         i->view->region()->set_position (i->initial_end - i->view->region()->length());
3014                                 }
3015                         }
3016                 }
3017
3018                 if (!_views.empty()) {
3019                         if (_operation == StartTrim) {
3020                                 _editor->maybe_locate_with_edit_preroll(
3021                                         _views.begin()->view->region()->position());
3022                         }
3023                         if (_operation == EndTrim) {
3024                                 _editor->maybe_locate_with_edit_preroll(
3025                                         _views.begin()->view->region()->position() +
3026                                         _views.begin()->view->region()->length());
3027                         }
3028                 }
3029
3030                 if (!_editor->selection->selected (_primary)) {
3031                         _primary->thaw_after_trim ();
3032                 } else {
3033
3034                         set<boost::shared_ptr<Playlist> > diffed_playlists;
3035
3036                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3037                                 i->view->thaw_after_trim ();
3038                                 i->view->enable_display (true);
3039
3040                                 /* Trimming one region may affect others on the playlist, so we need
3041                                    to get undo Commands from the whole playlist rather than just the
3042                                    region.  Use diffed_playlists to make sure we don't diff a given
3043                                    playlist more than once.
3044                                 */
3045                                 boost::shared_ptr<Playlist> p = i->view->region()->playlist ();
3046                                 if (diffed_playlists.find (p) == diffed_playlists.end()) {
3047                                         vector<Command*> cmds;
3048                                         p->rdiff (cmds);
3049                                         _editor->session()->add_commands (cmds);
3050                                         diffed_playlists.insert (p);
3051                                 }
3052                         }
3053                 }
3054
3055                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
3056                         (*p)->thaw ();
3057                 }
3058
3059                 _editor->motion_frozen_playlists.clear ();
3060                 _editor->commit_reversible_command();
3061
3062         } else {
3063                 /* no mouse movement */
3064                 if (adjusted_current_frame (event) != adjusted_frame (_drags->current_pointer_frame(), event, false)) {
3065                         _editor->point_trim (event, adjusted_current_frame (event));
3066                 }
3067         }
3068
3069         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3070                 i->view->region()->resume_property_changes ();
3071         }
3072 }
3073
3074 void
3075 TrimDrag::aborted (bool movement_occurred)
3076 {
3077         /* Our motion method is changing model state, so use the Undo system
3078            to cancel.  Perhaps not ideal, as this will leave an Undo point
3079            behind which may be slightly odd from the user's point of view.
3080         */
3081
3082         finished (0, true);
3083
3084         if (movement_occurred) {
3085                 _editor->undo ();
3086         }
3087
3088         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3089                 i->view->region()->resume_property_changes ();
3090         }
3091 }
3092
3093 void
3094 TrimDrag::setup_pointer_frame_offset ()
3095 {
3096         list<DraggingView>::iterator i = _views.begin ();
3097         while (i != _views.end() && i->view != _primary) {
3098                 ++i;
3099         }
3100
3101         if (i == _views.end()) {
3102                 return;
3103         }
3104
3105         switch (_operation) {
3106         case StartTrim:
3107                 _pointer_frame_offset = raw_grab_frame() - i->initial_position;
3108                 break;
3109         case EndTrim:
3110                 _pointer_frame_offset = raw_grab_frame() - i->initial_end;
3111                 break;
3112         case ContentsTrim:
3113                 break;
3114         }
3115 }
3116
3117 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3118         : Drag (e, i),
3119           _copy (c)
3120         , before_state (0)
3121 {
3122         DEBUG_TRACE (DEBUG::Drags, "New MeterMarkerDrag\n");
3123         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
3124         assert (_marker);
3125         _real_section = &_marker->meter();
3126
3127 }
3128
3129 void
3130 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3131 {
3132         Drag::start_grab (event, cursor);
3133         show_verbose_cursor_time (adjusted_current_frame(event));
3134 }
3135
3136 void
3137 MeterMarkerDrag::setup_pointer_frame_offset ()
3138 {
3139         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3140 }
3141
3142 void
3143 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3144 {
3145         if (!_marker->meter().movable()) {
3146                 //return;
3147         }
3148
3149         if (first_move) {
3150
3151                 // create a dummy marker to catch events, then hide it.
3152
3153                 char name[64];
3154                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3155
3156                 _marker = new MeterMarker (
3157                         *_editor,
3158                         *_editor->meter_group,
3159                         UIConfiguration::instance().color ("meter marker"),
3160                         name,
3161                         *new MeterSection (_marker->meter())
3162                 );
3163
3164                 /* use the new marker for the grab */
3165                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3166                 _marker->hide();
3167
3168                 TempoMap& map (_editor->session()->tempo_map());
3169                 /* get current state */
3170                 before_state = &map.get_state();
3171
3172                 if (!_copy) {
3173                         _editor->begin_reversible_command (_("move meter mark"));
3174                 } else {
3175                         _editor->begin_reversible_command (_("copy meter mark"));
3176
3177                         Timecode::BBT_Time bbt = _real_section->bbt();
3178
3179                         /* we can't add a meter where one currently exists */
3180                         if (_real_section->frame() < adjusted_current_frame (event, false)) {
3181                                 ++bbt.bars;
3182                         } else {
3183                                 --bbt.bars;
3184                         }
3185                         const double beat = map.bbt_to_beats (bbt);
3186
3187                         if (_real_section->position_lock_style() == AudioTime) {
3188                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor())
3189                                                                , map.frame_time (bbt), beat, bbt);
3190                         } else {
3191                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor()), beat, bbt);
3192                         }
3193                 }
3194         }
3195
3196         framepos_t const pf = adjusted_current_frame (event, false);
3197         if (_marker->meter().position_lock_style() == MusicTime) {
3198                 TempoMap& map (_editor->session()->tempo_map());
3199                 Timecode::BBT_Time bbt;
3200                 map.bbt_time (pf, bbt);
3201                 /* round bbt to bars */
3202                 map.round_bbt (bbt, -1);
3203                 const MeterSection& prev_m = map.meter_section_at (_real_section->frame() - 1);
3204
3205                 if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3206                         _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3207                 } else if (bbt.bars > _real_section->bbt().bars) {
3208                         const double pulse = _real_section->pulse() + (prev_m.note_divisor() / prev_m.divisions_per_bar());
3209                         _editor->session()->tempo_map().gui_move_meter (_real_section, pulse);
3210                 } else if (bbt.bars < _real_section->bbt().bars) {
3211                         const double pulse = _real_section->pulse() - (prev_m.note_divisor() / prev_m.divisions_per_bar());
3212                         _editor->session()->tempo_map().gui_move_meter (_real_section, pulse);
3213                 }
3214         } else {
3215                 /* AudioTime */
3216                 if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3217                         /* currently disabled in the lib for AudioTime */
3218                         if (_real_section->movable()) {
3219                                 _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3220                         }
3221                 } else {
3222                         _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3223                 }
3224         }
3225         _marker->set_position (pf);
3226         show_verbose_cursor_time (_real_section->frame());
3227 }
3228
3229 void
3230 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3231 {
3232         if (!movement_occurred) {
3233                 if (was_double_click()) {
3234                         _editor->edit_meter_marker (*_marker);
3235                 }
3236                 return;
3237         }
3238
3239         TempoMap& map (_editor->session()->tempo_map());
3240
3241         XMLNode &after = map.get_state();
3242         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3243         _editor->commit_reversible_command ();
3244
3245         // delete the dummy marker we used for visual representation while moving.
3246         // a new visual marker will show up automatically.
3247         delete _marker;
3248 }
3249
3250 void
3251 MeterMarkerDrag::aborted (bool moved)
3252 {
3253         _marker->set_position (_marker->meter().frame ());
3254         if (moved) {
3255                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3256                 // delete the dummy marker we used for visual representation while moving.
3257                 // a new visual marker will show up automatically.
3258                 delete _marker;
3259         }
3260 }
3261
3262 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3263         : Drag (e, i)
3264         , _copy (c)
3265         , before_state (0)
3266 {
3267         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3268
3269         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3270         _real_section = &_marker->tempo();
3271         _movable = _real_section->movable();
3272         assert (_marker);
3273 }
3274
3275 void
3276 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3277 {
3278         Drag::start_grab (event, cursor);
3279         if (!_real_section->active()) {
3280                 show_verbose_cursor_text (_("inactive"));
3281         } else {
3282                 show_verbose_cursor_time (adjusted_current_frame (event));
3283         }
3284 }
3285
3286 void
3287 TempoMarkerDrag::setup_pointer_frame_offset ()
3288 {
3289         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3290 }
3291
3292 void
3293 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3294 {
3295         if (!_real_section->active()) {
3296                 return;
3297         }
3298         if (first_move) {
3299
3300                 // mvc drag - create a dummy marker to catch events, hide it.
3301
3302                 char name[64];
3303                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3304
3305                 TempoSection section (_marker->tempo());
3306
3307                 _marker = new TempoMarker (
3308                         *_editor,
3309                         *_editor->tempo_group,
3310                         UIConfiguration::instance().color ("tempo marker"),
3311                         name,
3312                         *new TempoSection (_marker->tempo())
3313                         );
3314
3315                 /* use the new marker for the grab */
3316                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3317                 _marker->hide();
3318
3319                 TempoMap& map (_editor->session()->tempo_map());
3320                 /* get current state */
3321                 before_state = &map.get_state();
3322                 if (!_copy) {
3323                         _editor->begin_reversible_command (_("move tempo mark"));
3324                 } else {
3325                         _editor->begin_reversible_command (_("copy tempo mark"));
3326                         framepos_t frame;
3327                         bool use_snap = false;
3328
3329                         if (!_editor->snap_musical()) {
3330                                 frame = adjusted_current_frame (event);
3331                         } else {
3332                                 frame = adjusted_current_frame (event, false);
3333                                 if (ArdourKeyboard::indicates_snap (event->button.state)) {
3334                                         if (_editor->snap_mode() == Editing::SnapOff) {
3335                                                 use_snap = true;
3336                                         } else {
3337                                                 use_snap = false;
3338                                         }
3339                                 } else {
3340                                         if (_editor->snap_mode() == Editing::SnapOff) {
3341                                                 use_snap = false;
3342                                         } else {
3343                                                 use_snap = true;
3344                                         }
3345                                 }
3346                         }
3347
3348                         Timecode::BBT_Time bbt;
3349                         map.bbt_time (frame, bbt);
3350
3351                         /* add new tempo section to map, ensuring we don't refer to existing tempos for snap */
3352
3353                         if (_real_section->position_lock_style() == MusicTime) {
3354                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3355                                         map.round_bbt (bbt, -1);
3356                                 } else if (use_snap) {
3357                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3358                                 }
3359                                 double const pulse = map.predict_tempo_pulse (_real_section, map.frame_time (bbt));
3360                                 _real_section = map.add_tempo (_marker->tempo(), pulse, _real_section->type());
3361                         } else {
3362                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3363                                         map.round_bbt (bbt, -1);
3364                                 } else if (use_snap) {
3365                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3366                                 }
3367                                 if (use_snap) {
3368                                         frame = map.predict_tempo_frame (_real_section, bbt);
3369                                 }
3370                                 _real_section = map.add_tempo (_marker->tempo(), frame, _real_section->type());
3371                         }
3372                 }
3373
3374         }
3375
3376         framepos_t pf;
3377
3378         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3379                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3380                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3381                 stringstream strs;
3382                 strs << new_bpm;
3383                 show_verbose_cursor_text (strs.str());
3384         } else if (_movable && !_real_section->locked_to_meter()) {
3385                 if (!_editor->snap_musical()) {
3386                         /* snap normally (this is not self-referential).*/
3387                         pf = adjusted_current_frame (event);
3388                 } else {
3389                         /* but this is.
3390                            we can't use the map for anything related to tempo,
3391                            so we round bbt using meters, which have no dependency
3392                            on pulse for this kind of thing.
3393                         */
3394                         bool use_snap;
3395                         TempoMap& map (_editor->session()->tempo_map());
3396
3397                         pf = adjusted_current_frame (event, false);
3398                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
3399                                 if (_editor->snap_mode() == Editing::SnapOff) {
3400                                         use_snap = true;
3401                                 } else {
3402                                         use_snap = false;
3403                                 }
3404                         } else {
3405                                 if (_editor->snap_mode() == Editing::SnapOff) {
3406                                         use_snap = false;
3407                                 } else {
3408                                         use_snap = true;
3409                                 }
3410                         }
3411
3412                         Timecode::BBT_Time when;
3413                         map.bbt_time (pf, when);
3414
3415                         if (_real_section->position_lock_style() == MusicTime) {
3416
3417                                 const double pulse = map.predict_tempo_pulse (_real_section, pf);
3418                                 when = map.pulse_to_bbt (pulse);
3419                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3420                                         map.round_bbt (when, -1);
3421                                 } else if (use_snap) {
3422                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3423                                 }
3424                                 const double beat = map.bbt_to_beats (when);
3425                                 map.gui_move_tempo_beat (_real_section, beat);
3426                         } else {
3427                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3428                                         map.round_bbt (when, -1);
3429                                 } else if (use_snap) {
3430                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3431                                 }
3432                                 if (use_snap) {
3433                                         pf = map.predict_tempo_frame (_real_section, when);
3434                                 }
3435                                 map.gui_move_tempo_frame (_real_section, pf);
3436                         }
3437                 }
3438
3439                 show_verbose_cursor_time (_real_section->frame());
3440         }
3441         _marker->set_position (pf);
3442 }
3443
3444 void
3445 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3446 {
3447         if (!_real_section->active()) {
3448                 return;
3449         }
3450         if (!movement_occurred) {
3451                 if (was_double_click()) {
3452                         _editor->edit_tempo_marker (*_marker);
3453                 }
3454                 return;
3455         }
3456
3457         TempoMap& map (_editor->session()->tempo_map());
3458
3459         XMLNode &after = map.get_state();
3460         _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3461         _editor->commit_reversible_command ();
3462
3463         // delete the dummy marker we used for visual representation while moving.
3464         // a new visual marker will show up automatically.
3465         delete _marker;
3466 }
3467
3468 void
3469 TempoMarkerDrag::aborted (bool moved)
3470 {
3471         _marker->set_position (_marker->tempo().frame());
3472         if (moved) {
3473                 TempoMap& map (_editor->session()->tempo_map());
3474                 map.set_state (*before_state, Stateful::current_state_version);
3475                 // delete the dummy marker we used for visual representation while moving.
3476                 // a new visual marker will show up automatically.
3477                 delete _marker;
3478         }
3479 }
3480
3481 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3482         : Drag (e, &c.track_canvas_item(), false)
3483         , _cursor (c)
3484         , _stop (s)
3485         , _grab_zoom (0.0)
3486 {
3487         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3488 }
3489
3490 /** Do all the things we do when dragging the playhead to make it look as though
3491  *  we have located, without actually doing the locate (because that would cause
3492  *  the diskstream buffers to be refilled, which is too slow).
3493  */
3494 void
3495 CursorDrag::fake_locate (framepos_t t)
3496 {
3497         if (_editor->session () == 0) {
3498                 return;
3499         }
3500
3501         _editor->playhead_cursor->set_position (t);
3502
3503         Session* s = _editor->session ();
3504         if (s->timecode_transmission_suspended ()) {
3505                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3506                 /* This is asynchronous so it will be sent "now"
3507                  */
3508                 s->send_mmc_locate (f);
3509                 /* These are synchronous and will be sent during the next
3510                    process cycle
3511                 */
3512                 s->queue_full_time_code ();
3513                 s->queue_song_position_pointer ();
3514         }
3515
3516         show_verbose_cursor_time (t);
3517         _editor->UpdateAllTransportClocks (t);
3518 }
3519
3520 void
3521 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3522 {
3523         Drag::start_grab (event, c);
3524         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3525
3526         _grab_zoom = _editor->samples_per_pixel;
3527
3528         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3529
3530         _editor->snap_to_with_modifier (where, event);
3531
3532         _editor->_dragging_playhead = true;
3533
3534         Session* s = _editor->session ();
3535
3536         /* grab the track canvas item as well */
3537
3538         _cursor.track_canvas_item().grab();
3539
3540         if (s) {
3541                 if (_was_rolling && _stop) {
3542                         s->request_stop ();
3543                 }
3544
3545                 if (s->is_auditioning()) {
3546                         s->cancel_audition ();
3547                 }
3548
3549
3550                 if (AudioEngine::instance()->connected()) {
3551
3552                         /* do this only if we're the engine is connected
3553                          * because otherwise this request will never be
3554                          * serviced and we'll busy wait forever. likewise,
3555                          * notice if we are disconnected while waiting for the
3556                          * request to be serviced.
3557                          */
3558
3559                         s->request_suspend_timecode_transmission ();
3560                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3561                                 /* twiddle our thumbs */
3562                         }
3563                 }
3564         }
3565
3566         fake_locate (where - snap_delta (event->button.state));
3567 }
3568
3569 void
3570 CursorDrag::motion (GdkEvent* event, bool)
3571 {
3572         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3573         _editor->snap_to_with_modifier (where, event);
3574         if (where != last_pointer_frame()) {
3575                 fake_locate (where - snap_delta (event->button.state));
3576         }
3577 }
3578
3579 void
3580 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3581 {
3582         _editor->_dragging_playhead = false;
3583
3584         _cursor.track_canvas_item().ungrab();
3585
3586         if (!movement_occurred && _stop) {
3587                 return;
3588         }
3589
3590         motion (event, false);
3591
3592         Session* s = _editor->session ();
3593         if (s) {
3594                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3595                 _editor->_pending_locate_request = true;
3596                 s->request_resume_timecode_transmission ();
3597         }
3598 }
3599
3600 void
3601 CursorDrag::aborted (bool)
3602 {
3603         _cursor.track_canvas_item().ungrab();
3604
3605         if (_editor->_dragging_playhead) {
3606                 _editor->session()->request_resume_timecode_transmission ();
3607                 _editor->_dragging_playhead = false;
3608         }
3609
3610         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3611 }
3612
3613 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3614         : RegionDrag (e, i, p, v)
3615 {
3616         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3617 }
3618
3619 void
3620 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3621 {
3622         Drag::start_grab (event, cursor);
3623
3624         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3625         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3626         setup_snap_delta (r->position ());
3627
3628         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3629 }
3630
3631 void
3632 FadeInDrag::setup_pointer_frame_offset ()
3633 {
3634         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3635         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3636         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3637 }
3638
3639 void
3640 FadeInDrag::motion (GdkEvent* event, bool)
3641 {
3642         framecnt_t fade_length;
3643
3644         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3645         _editor->snap_to_with_modifier (pos, event);
3646         pos -= snap_delta (event->button.state);
3647
3648         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3649
3650         if (pos < (region->position() + 64)) {
3651                 fade_length = 64; // this should be a minimum defined somewhere
3652         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3653                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3654         } else {
3655                 fade_length = pos - region->position();
3656         }
3657
3658         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3659
3660                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3661
3662                 if (!tmp) {
3663                         continue;
3664                 }
3665
3666                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3667         }
3668
3669         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3670 }
3671
3672 void
3673 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3674 {
3675         if (!movement_occurred) {
3676                 return;
3677         }
3678
3679         framecnt_t fade_length;
3680         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3681         _editor->snap_to_with_modifier (pos, event);
3682         pos -= snap_delta (event->button.state);
3683
3684         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3685
3686         if (pos < (region->position() + 64)) {
3687                 fade_length = 64; // this should be a minimum defined somewhere
3688         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3689                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3690         } else {
3691                 fade_length = pos - region->position();
3692         }
3693
3694         bool in_command = false;
3695
3696         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3697
3698                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3699
3700                 if (!tmp) {
3701                         continue;
3702                 }
3703
3704                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3705                 XMLNode &before = alist->get_state();
3706
3707                 tmp->audio_region()->set_fade_in_length (fade_length);
3708                 tmp->audio_region()->set_fade_in_active (true);
3709
3710                 if (!in_command) {
3711                         _editor->begin_reversible_command (_("change fade in length"));
3712                         in_command = true;
3713                 }
3714                 XMLNode &after = alist->get_state();
3715                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3716         }
3717
3718         if (in_command) {
3719                 _editor->commit_reversible_command ();
3720         }
3721 }
3722
3723 void
3724 FadeInDrag::aborted (bool)
3725 {
3726         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3727                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3728
3729                 if (!tmp) {
3730                         continue;
3731                 }
3732
3733                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3734         }
3735 }
3736
3737 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3738         : RegionDrag (e, i, p, v)
3739 {
3740         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3741 }
3742
3743 void
3744 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3745 {
3746         Drag::start_grab (event, cursor);
3747
3748         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3749         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3750         setup_snap_delta (r->last_frame ());
3751
3752         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3753 }
3754
3755 void
3756 FadeOutDrag::setup_pointer_frame_offset ()
3757 {
3758         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3759         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3760         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3761 }
3762
3763 void
3764 FadeOutDrag::motion (GdkEvent* event, bool)
3765 {
3766         framecnt_t fade_length;
3767
3768         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3769         _editor->snap_to_with_modifier (pos, event);
3770         pos -= snap_delta (event->button.state);
3771
3772         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3773
3774         if (pos > (region->last_frame() - 64)) {
3775                 fade_length = 64; // this should really be a minimum fade defined somewhere
3776         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3777                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3778         } else {
3779                 fade_length = region->last_frame() - pos;
3780         }
3781
3782         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3783
3784                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3785
3786                 if (!tmp) {
3787                         continue;
3788                 }
3789
3790                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3791         }
3792
3793         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3794 }
3795
3796 void
3797 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3798 {
3799         if (!movement_occurred) {
3800                 return;
3801         }
3802
3803         framecnt_t fade_length;
3804
3805         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3806         _editor->snap_to_with_modifier (pos, event);
3807         pos -= snap_delta (event->button.state);
3808
3809         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3810
3811         if (pos > (region->last_frame() - 64)) {
3812                 fade_length = 64; // this should really be a minimum fade defined somewhere
3813         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3814                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3815         } else {
3816                 fade_length = region->last_frame() - pos;
3817         }
3818
3819         bool in_command = false;
3820
3821         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3822
3823                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3824
3825                 if (!tmp) {
3826                         continue;
3827                 }
3828
3829                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3830                 XMLNode &before = alist->get_state();
3831
3832                 tmp->audio_region()->set_fade_out_length (fade_length);
3833                 tmp->audio_region()->set_fade_out_active (true);
3834
3835                 if (!in_command) {
3836                         _editor->begin_reversible_command (_("change fade out length"));
3837                         in_command = true;
3838                 }
3839                 XMLNode &after = alist->get_state();
3840                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3841         }
3842
3843         if (in_command) {
3844                 _editor->commit_reversible_command ();
3845         }
3846 }
3847
3848 void
3849 FadeOutDrag::aborted (bool)
3850 {
3851         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3852                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3853
3854                 if (!tmp) {
3855                         continue;
3856                 }
3857
3858                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3859         }
3860 }
3861
3862 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3863         : Drag (e, i)
3864         , _selection_changed (false)
3865 {
3866         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3867         Gtk::Window* toplevel = _editor->current_toplevel();
3868         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3869
3870         assert (_marker);
3871
3872         _points.push_back (ArdourCanvas::Duple (0, 0));
3873
3874         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3875 }
3876
3877 MarkerDrag::~MarkerDrag ()
3878 {
3879         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3880                 delete i->location;
3881         }
3882 }
3883
3884 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3885 {
3886         location = new Location (*l);
3887         markers.push_back (m);
3888         move_both = false;
3889 }
3890
3891 void
3892 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3893 {
3894         Drag::start_grab (event, cursor);
3895
3896         bool is_start;
3897
3898         Location *location = _editor->find_location_from_marker (_marker, is_start);
3899         _editor->_dragging_edit_point = true;
3900
3901         update_item (location);
3902
3903         // _drag_line->show();
3904         // _line->raise_to_top();
3905
3906         if (is_start) {
3907                 show_verbose_cursor_time (location->start());
3908         } else {
3909                 show_verbose_cursor_time (location->end());
3910         }
3911         setup_snap_delta (is_start ? location->start() : location->end());
3912
3913         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3914
3915         switch (op) {
3916         case Selection::Toggle:
3917                 /* we toggle on the button release */
3918                 break;
3919         case Selection::Set:
3920                 if (!_editor->selection->selected (_marker)) {
3921                         _editor->selection->set (_marker);
3922                         _selection_changed = true;
3923                 }
3924                 break;
3925         case Selection::Extend:
3926         {
3927                 Locations::LocationList ll;
3928                 list<ArdourMarker*> to_add;
3929                 framepos_t s, e;
3930                 _editor->selection->markers.range (s, e);
3931                 s = min (_marker->position(), s);
3932                 e = max (_marker->position(), e);
3933                 s = min (s, e);
3934                 e = max (s, e);
3935                 if (e < max_framepos) {
3936                         ++e;
3937                 }
3938                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3939                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3940                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3941                         if (lm) {
3942                                 if (lm->start) {
3943                                         to_add.push_back (lm->start);
3944                                 }
3945                                 if (lm->end) {
3946                                         to_add.push_back (lm->end);
3947                                 }
3948                         }
3949                 }
3950                 if (!to_add.empty()) {
3951                         _editor->selection->add (to_add);
3952                         _selection_changed = true;
3953                 }
3954                 break;
3955         }
3956         case Selection::Add:
3957                 _editor->selection->add (_marker);
3958                 _selection_changed = true;
3959
3960                 break;
3961         }
3962
3963         /* Set up copies for us to manipulate during the drag
3964          */
3965
3966         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3967
3968                 Location* l = _editor->find_location_from_marker (*i, is_start);
3969
3970                 if (!l) {
3971                         continue;
3972                 }
3973
3974                 if (l->is_mark()) {
3975                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3976                 } else {
3977                         /* range: check that the other end of the range isn't
3978                            already there.
3979                         */
3980                         CopiedLocationInfo::iterator x;
3981                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3982                                 if (*(*x).location == *l) {
3983                                         break;
3984                                 }
3985                         }
3986                         if (x == _copied_locations.end()) {
3987                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3988                         } else {
3989                                 (*x).markers.push_back (*i);
3990                                 (*x).move_both = true;
3991                         }
3992                 }
3993
3994         }
3995 }
3996
3997 void
3998 MarkerDrag::setup_pointer_frame_offset ()
3999 {
4000         bool is_start;
4001         Location *location = _editor->find_location_from_marker (_marker, is_start);
4002         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
4003 }
4004
4005 void
4006 MarkerDrag::motion (GdkEvent* event, bool)
4007 {
4008         framecnt_t f_delta = 0;
4009         bool is_start;
4010         bool move_both = false;
4011         Location *real_location;
4012         Location *copy_location = 0;
4013         framecnt_t const sd = snap_delta (event->button.state);
4014
4015         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
4016         framepos_t next = newframe;
4017
4018         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
4019                 move_both = true;
4020         }
4021
4022         CopiedLocationInfo::iterator x;
4023
4024         /* find the marker we're dragging, and compute the delta */
4025
4026         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4027
4028                 copy_location = (*x).location;
4029
4030                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4031
4032                         /* this marker is represented by this
4033                          * CopiedLocationMarkerInfo
4034                          */
4035
4036                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4037                                 /* que pasa ?? */
4038                                 return;
4039                         }
4040
4041                         if (real_location->is_mark()) {
4042                                 f_delta = newframe - copy_location->start();
4043                         } else {
4044
4045
4046                                 switch (_marker->type()) {
4047                                 case ArdourMarker::SessionStart:
4048                                 case ArdourMarker::RangeStart:
4049                                 case ArdourMarker::LoopStart:
4050                                 case ArdourMarker::PunchIn:
4051                                         f_delta = newframe - copy_location->start();
4052                                         break;
4053
4054                                 case ArdourMarker::SessionEnd:
4055                                 case ArdourMarker::RangeEnd:
4056                                 case ArdourMarker::LoopEnd:
4057                                 case ArdourMarker::PunchOut:
4058                                         f_delta = newframe - copy_location->end();
4059                                         break;
4060                                 default:
4061                                         /* what kind of marker is this ? */
4062                                         return;
4063                                 }
4064                         }
4065
4066                         break;
4067                 }
4068         }
4069
4070         if (x == _copied_locations.end()) {
4071                 /* hmm, impossible - we didn't find the dragged marker */
4072                 return;
4073         }
4074
4075         /* now move them all */
4076
4077         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4078
4079                 copy_location = x->location;
4080
4081                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4082                         continue;
4083                 }
4084
4085                 if (real_location->locked()) {
4086                         continue;
4087                 }
4088
4089                 if (copy_location->is_mark()) {
4090
4091                         /* now move it */
4092
4093                         copy_location->set_start (copy_location->start() + f_delta);
4094
4095                 } else {
4096
4097                         framepos_t new_start = copy_location->start() + f_delta;
4098                         framepos_t new_end = copy_location->end() + f_delta;
4099
4100                         if (is_start) { // start-of-range marker
4101
4102                                 if (move_both || (*x).move_both) {
4103                                         copy_location->set_start (new_start);
4104                                         copy_location->set_end (new_end);
4105                                 } else  if (new_start < copy_location->end()) {
4106                                         copy_location->set_start (new_start);
4107                                 } else if (newframe > 0) {
4108                                         //_editor->snap_to (next, RoundUpAlways, true);
4109                                         copy_location->set_end (next);
4110                                         copy_location->set_start (newframe);
4111                                 }
4112
4113                         } else { // end marker
4114
4115                                 if (move_both || (*x).move_both) {
4116                                         copy_location->set_end (new_end);
4117                                         copy_location->set_start (new_start);
4118                                 } else if (new_end > copy_location->start()) {
4119                                         copy_location->set_end (new_end);
4120                                 } else if (newframe > 0) {
4121                                         //_editor->snap_to (next, RoundDownAlways, true);
4122                                         copy_location->set_start (next);
4123                                         copy_location->set_end (newframe);
4124                                 }
4125                         }
4126                 }
4127
4128                 update_item (copy_location);
4129
4130                 /* now lookup the actual GUI items used to display this
4131                  * location and move them to wherever the copy of the location
4132                  * is now. This means that the logic in ARDOUR::Location is
4133                  * still enforced, even though we are not (yet) modifying
4134                  * the real Location itself.
4135                  */
4136
4137                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4138
4139                 if (lm) {
4140                         lm->set_position (copy_location->start(), copy_location->end());
4141                 }
4142
4143         }
4144
4145         assert (!_copied_locations.empty());
4146
4147         show_verbose_cursor_time (newframe);
4148 }
4149
4150 void
4151 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4152 {
4153         if (!movement_occurred) {
4154
4155                 if (was_double_click()) {
4156                         _editor->rename_marker (_marker);
4157                         return;
4158                 }
4159
4160                 /* just a click, do nothing but finish
4161                    off the selection process
4162                 */
4163
4164                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4165                 switch (op) {
4166                 case Selection::Set:
4167                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4168                                 _editor->selection->set (_marker);
4169                                 _selection_changed = true;
4170                         }
4171                         break;
4172
4173                 case Selection::Toggle:
4174                         /* we toggle on the button release, click only */
4175                         _editor->selection->toggle (_marker);
4176                         _selection_changed = true;
4177
4178                         break;
4179
4180                 case Selection::Extend:
4181                 case Selection::Add:
4182                         break;
4183                 }
4184
4185                 if (_selection_changed) {
4186                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4187                         _editor->commit_reversible_selection_op();
4188                 }
4189
4190                 return;
4191         }
4192
4193         _editor->_dragging_edit_point = false;
4194
4195         XMLNode &before = _editor->session()->locations()->get_state();
4196         bool in_command = false;
4197
4198         MarkerSelection::iterator i;
4199         CopiedLocationInfo::iterator x;
4200         bool is_start;
4201
4202         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4203              x != _copied_locations.end() && i != _editor->selection->markers.end();
4204              ++i, ++x) {
4205
4206                 Location * location = _editor->find_location_from_marker (*i, is_start);
4207
4208                 if (location) {
4209
4210                         if (location->locked()) {
4211                                 continue;
4212                         }
4213                         if (!in_command) {
4214                                 _editor->begin_reversible_command ( _("move marker") );
4215                                 in_command = true;
4216                         }
4217                         if (location->is_mark()) {
4218                                 location->set_start (((*x).location)->start());
4219                         } else {
4220                                 location->set (((*x).location)->start(), ((*x).location)->end());
4221                         }
4222                 }
4223         }
4224
4225         if (in_command) {
4226                 XMLNode &after = _editor->session()->locations()->get_state();
4227                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4228                 _editor->commit_reversible_command ();
4229         }
4230 }
4231
4232 void
4233 MarkerDrag::aborted (bool movement_occurred)
4234 {
4235         if (!movement_occurred) {
4236                 return;
4237         }
4238
4239         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4240
4241                 /* move all markers to their original location */
4242
4243
4244                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4245
4246                         bool is_start;
4247                         Location * location = _editor->find_location_from_marker (*m, is_start);
4248
4249                         if (location) {
4250                                 (*m)->set_position (is_start ? location->start() : location->end());
4251                         }
4252                 }
4253         }
4254 }
4255
4256 void
4257 MarkerDrag::update_item (Location*)
4258 {
4259         /* noop */
4260 }
4261
4262 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4263         : Drag (e, i)
4264         , _fixed_grab_x (0.0)
4265         , _fixed_grab_y (0.0)
4266         , _cumulative_x_drag (0.0)
4267         , _cumulative_y_drag (0.0)
4268         , _pushing (false)
4269         , _final_index (0)
4270 {
4271         if (_zero_gain_fraction < 0.0) {
4272                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4273         }
4274
4275         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4276
4277         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4278         assert (_point);
4279 }
4280
4281
4282 void
4283 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4284 {
4285         Drag::start_grab (event, _editor->cursors()->fader);
4286
4287         // start the grab at the center of the control point so
4288         // the point doesn't 'jump' to the mouse after the first drag
4289         _fixed_grab_x = _point->get_x();
4290         _fixed_grab_y = _point->get_y();
4291
4292         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4293         setup_snap_delta (pos);
4294
4295         float const fraction = 1 - (_point->get_y() / _point->line().height());
4296         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4297
4298         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4299
4300         if (!_point->can_slide ()) {
4301                 _x_constrained = true;
4302         }
4303 }
4304
4305 void
4306 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4307 {
4308         double dx = _drags->current_pointer_x() - last_pointer_x();
4309         double dy = current_pointer_y() - last_pointer_y();
4310         bool need_snap = true;
4311
4312         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4313                 dx *= 0.1;
4314                 dy *= 0.1;
4315                 need_snap = false;
4316         }
4317
4318         /* coordinate in pixels relative to the start of the region (for region-based automation)
4319            or track (for track-based automation) */
4320         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4321         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4322
4323         // calculate zero crossing point. back off by .01 to stay on the
4324         // positive side of zero
4325         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4326
4327         if (_x_constrained) {
4328                 cx = _fixed_grab_x;
4329         }
4330         if (_y_constrained) {
4331                 cy = _fixed_grab_y;
4332         }
4333
4334         _cumulative_x_drag = cx - _fixed_grab_x;
4335         _cumulative_y_drag = cy - _fixed_grab_y;
4336
4337         cx = max (0.0, cx);
4338         cy = max (0.0, cy);
4339         cy = min ((double) _point->line().height(), cy);
4340
4341         // make sure we hit zero when passing through
4342         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4343                 cy = zero_gain_y;
4344         }
4345
4346         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4347
4348         if (!_x_constrained && need_snap) {
4349                 _editor->snap_to_with_modifier (cx_frames, event);
4350         }
4351
4352         cx_frames -= snap_delta (event->button.state);
4353         cx_frames = min (cx_frames, _point->line().maximum_time());
4354
4355         float const fraction = 1.0 - (cy / _point->line().height());
4356
4357         if (first_motion) {
4358                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4359                 _editor->begin_reversible_command (_("automation event move"));
4360                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4361         }
4362         pair<double, float> result;
4363         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4364
4365         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4366 }
4367
4368 void
4369 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4370 {
4371         if (!movement_occurred) {
4372
4373                 /* just a click */
4374                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4375                         _editor->reset_point_selection ();
4376                 }
4377
4378         } else {
4379                 _point->line().end_drag (_pushing, _final_index);
4380                 _editor->commit_reversible_command ();
4381         }
4382 }
4383
4384 void
4385 ControlPointDrag::aborted (bool)
4386 {
4387         _point->line().reset ();
4388 }
4389
4390 bool
4391 ControlPointDrag::active (Editing::MouseMode m)
4392 {
4393         if (m == Editing::MouseDraw) {
4394                 /* always active in mouse draw */
4395                 return true;
4396         }
4397
4398         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4399         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4400 }
4401
4402 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4403         : Drag (e, i)
4404         , _line (0)
4405         , _fixed_grab_x (0.0)
4406         , _fixed_grab_y (0.0)
4407         , _cumulative_y_drag (0)
4408         , _before (0)
4409         , _after (0)
4410 {
4411         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4412 }
4413
4414 void
4415 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4416 {
4417         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4418         assert (_line);
4419
4420         _item = &_line->grab_item ();
4421
4422         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4423            origin, and ditto for y.
4424         */
4425
4426         double mx = event->button.x;
4427         double my = event->button.y;
4428
4429         _line->grab_item().canvas_to_item (mx, my);
4430
4431         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4432
4433         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4434                 /* no adjacent points */
4435                 return;
4436         }
4437
4438         Drag::start_grab (event, _editor->cursors()->fader);
4439
4440         /* store grab start in item frame */
4441         double const bx = _line->nth (_before)->get_x();
4442         double const ax = _line->nth (_after)->get_x();
4443         double const click_ratio = (ax - mx) / (ax - bx);
4444
4445         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4446
4447         _fixed_grab_x = mx;
4448         _fixed_grab_y = cy;
4449
4450         double fraction = 1.0 - (cy / _line->height());
4451
4452         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4453 }
4454
4455 void
4456 LineDrag::motion (GdkEvent* event, bool first_move)
4457 {
4458         double dy = current_pointer_y() - last_pointer_y();
4459
4460         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4461                 dy *= 0.1;
4462         }
4463
4464         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4465
4466         _cumulative_y_drag = cy - _fixed_grab_y;
4467
4468         cy = max (0.0, cy);
4469         cy = min ((double) _line->height(), cy);
4470
4471         double const fraction = 1.0 - (cy / _line->height());
4472         uint32_t ignored;
4473
4474         if (first_move) {
4475                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4476
4477                 _editor->begin_reversible_command (_("automation range move"));
4478                 _line->start_drag_line (_before, _after, initial_fraction);
4479         }
4480
4481         /* we are ignoring x position for this drag, so we can just pass in anything */
4482         pair<double, float> result;
4483
4484         result = _line->drag_motion (0, fraction, true, false, ignored);
4485         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4486 }
4487
4488 void
4489 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4490 {
4491         if (movement_occurred) {
4492                 motion (event, false);
4493                 _line->end_drag (false, 0);
4494                 _editor->commit_reversible_command ();
4495         } else {
4496                 /* add a new control point on the line */
4497
4498                 AutomationTimeAxisView* atv;
4499
4500                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4501                         framepos_t where = grab_frame ();
4502
4503                         double cx = 0;
4504                         double cy = _fixed_grab_y;
4505
4506                         _line->grab_item().item_to_canvas (cx, cy);
4507
4508                         atv->add_automation_event (event, where, cy, false);
4509                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4510                         AudioRegionView* arv;
4511
4512                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4513                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4514                         }
4515                 }
4516         }
4517 }
4518
4519 void
4520 LineDrag::aborted (bool)
4521 {
4522         _line->reset ();
4523 }
4524
4525 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4526         : Drag (e, i),
4527           _line (0),
4528           _arv (0),
4529           _region_view_grab_x (0.0),
4530           _cumulative_x_drag (0),
4531           _before (0.0),
4532           _max_x (0)
4533 {
4534         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4535 }
4536
4537 void
4538 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4539 {
4540         Drag::start_grab (event);
4541
4542         _line = reinterpret_cast<Line*> (_item);
4543         assert (_line);
4544
4545         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4546
4547         double cx = event->button.x;
4548         double cy = event->button.y;
4549
4550         _item->parent()->canvas_to_item (cx, cy);
4551
4552         /* store grab start in parent frame */
4553         _region_view_grab_x = cx;
4554
4555         _before = *(float*) _item->get_data ("position");
4556
4557         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4558
4559         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4560 }
4561
4562 void
4563 FeatureLineDrag::motion (GdkEvent*, bool)
4564 {
4565         double dx = _drags->current_pointer_x() - last_pointer_x();
4566
4567         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4568
4569         _cumulative_x_drag += dx;
4570
4571         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4572
4573         if (cx > _max_x){
4574                 cx = _max_x;
4575         }
4576         else if(cx < 0){
4577                 cx = 0;
4578         }
4579
4580         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4581         assert (bbox);
4582         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4583
4584         float *pos = new float;
4585         *pos = cx;
4586
4587         _line->set_data ("position", pos);
4588
4589         _before = cx;
4590 }
4591
4592 void
4593 FeatureLineDrag::finished (GdkEvent*, bool)
4594 {
4595         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4596         _arv->update_transient(_before, _before);
4597 }
4598
4599 void
4600 FeatureLineDrag::aborted (bool)
4601 {
4602         //_line->reset ();
4603 }
4604
4605 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4606         : Drag (e, i)
4607         , _vertical_only (false)
4608 {
4609         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4610 }
4611
4612 void
4613 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4614 {
4615         Drag::start_grab (event);
4616         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4617 }
4618
4619 void
4620 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4621 {
4622         framepos_t start;
4623         framepos_t end;
4624         double y1;
4625         double y2;
4626
4627         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4628
4629         framepos_t grab = grab_frame ();
4630         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4631                 _editor->snap_to_with_modifier (grab, event);
4632         } else {
4633                 grab = raw_grab_frame ();
4634         }
4635
4636         /* base start and end on initial click position */
4637
4638         if (pf < grab) {
4639                 start = pf;
4640                 end = grab;
4641         } else {
4642                 end = pf;
4643                 start = grab;
4644         }
4645
4646         if (current_pointer_y() < grab_y()) {
4647                 y1 = current_pointer_y();
4648                 y2 = grab_y();
4649         } else {
4650                 y2 = current_pointer_y();
4651                 y1 = grab_y();
4652         }
4653
4654         if (start != end || y1 != y2) {
4655
4656                 double x1 = _editor->sample_to_pixel (start);
4657                 double x2 = _editor->sample_to_pixel (end);
4658                 const double min_dimension = 2.0;
4659
4660                 if (_vertical_only) {
4661                         /* fixed 10 pixel width */
4662                         x2 = x1 + 10;
4663                 } else {
4664                         if (x2 < x1) {
4665                                 x2 = min (x1 - min_dimension, x2);
4666                         } else {
4667                                 x2 = max (x1 + min_dimension, x2);
4668                         }
4669                 }
4670
4671                 if (y2 < y1) {
4672                         y2 = min (y1 - min_dimension, y2);
4673                 } else {
4674                         y2 = max (y1 + min_dimension, y2);
4675                 }
4676
4677                 /* translate rect into item space and set */
4678
4679                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4680
4681                 /* this drag is a _trackview_only == true drag, so the y1 and
4682                  * y2 (computed using current_pointer_y() and grab_y()) will be
4683                  * relative to the top of the trackview group). The
4684                  * rubberband rect has the same parent/scroll offset as the
4685                  * the trackview group, so we can use the "r" rect directly
4686                  * to set the shape of the rubberband.
4687                  */
4688
4689                 _editor->rubberband_rect->set (r);
4690                 _editor->rubberband_rect->show();
4691                 _editor->rubberband_rect->raise_to_top();
4692
4693                 show_verbose_cursor_time (pf);
4694
4695                 do_select_things (event, true);
4696         }
4697 }
4698
4699 void
4700 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4701 {
4702         framepos_t x1;
4703         framepos_t x2;
4704         framepos_t grab = grab_frame ();
4705         framepos_t lpf = last_pointer_frame ();
4706
4707         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4708                 grab = raw_grab_frame ();
4709                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4710         }
4711
4712         if (grab < lpf) {
4713                 x1 = grab;
4714                 x2 = lpf;
4715         } else {
4716                 x2 = grab;
4717                 x1 = lpf;
4718         }
4719
4720         double y1;
4721         double y2;
4722
4723         if (current_pointer_y() < grab_y()) {
4724                 y1 = current_pointer_y();
4725                 y2 = grab_y();
4726         } else {
4727                 y2 = current_pointer_y();
4728                 y1 = grab_y();
4729         }
4730
4731         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4732 }
4733
4734 void
4735 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4736 {
4737         if (movement_occurred) {
4738
4739                 motion (event, false);
4740                 do_select_things (event, false);
4741
4742         } else {
4743
4744                 /* just a click */
4745
4746                 bool do_deselect = true;
4747                 MidiTimeAxisView* mtv;
4748
4749                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4750                         /* MIDI track */
4751                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4752                                 /* nothing selected */
4753                                 add_midi_region (mtv, true);
4754                                 do_deselect = false;
4755                         }
4756                 }
4757
4758                 /* do not deselect if Primary or Tertiary (toggle-select or
4759                  * extend-select are pressed.
4760                  */
4761
4762                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4763                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4764                     do_deselect) {
4765                         deselect_things ();
4766                 }
4767
4768         }
4769
4770         _editor->rubberband_rect->hide();
4771 }
4772
4773 void
4774 RubberbandSelectDrag::aborted (bool)
4775 {
4776         _editor->rubberband_rect->hide ();
4777 }
4778
4779 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4780         : RegionDrag (e, i, p, v)
4781 {
4782         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4783 }
4784
4785 void
4786 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4787 {
4788         Drag::start_grab (event, cursor);
4789
4790         _editor->get_selection().add (_primary);
4791
4792         framepos_t where = _primary->region()->position();
4793         setup_snap_delta (where);
4794
4795         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4796 }
4797
4798 void
4799 TimeFXDrag::motion (GdkEvent* event, bool)
4800 {
4801         RegionView* rv = _primary;
4802         StreamView* cv = rv->get_time_axis_view().view ();
4803
4804         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4805         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4806         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4807         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4808         _editor->snap_to_with_modifier (pf, event);
4809         pf -= snap_delta (event->button.state);
4810
4811         if (pf > rv->region()->position()) {
4812                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4813         }
4814
4815         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4816 }
4817
4818 void
4819 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4820 {
4821         /* this may have been a single click, no drag. We still want the dialog
4822            to show up in that case, so that the user can manually edit the
4823            parameters for the timestretch.
4824         */
4825
4826         float fraction = 1.0;
4827
4828         if (movement_occurred) {
4829
4830                 motion (event, false);
4831
4832                 _primary->get_time_axis_view().hide_timestretch ();
4833
4834                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4835
4836                 if (adjusted_frame_pos < _primary->region()->position()) {
4837                         /* backwards drag of the left edge - not usable */
4838                         return;
4839                 }
4840
4841                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4842
4843                 fraction = (double) newlen / (double) _primary->region()->length();
4844
4845 #ifndef USE_RUBBERBAND
4846                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4847                 if (_primary->region()->data_type() == DataType::AUDIO) {
4848                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4849                 }
4850 #endif
4851         }
4852
4853         if (!_editor->get_selection().regions.empty()) {
4854                 /* primary will already be included in the selection, and edit
4855                    group shared editing will propagate selection across
4856                    equivalent regions, so just use the current region
4857                    selection.
4858                 */
4859
4860                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4861                         error << _("An error occurred while executing time stretch operation") << endmsg;
4862                 }
4863         }
4864 }
4865
4866 void
4867 TimeFXDrag::aborted (bool)
4868 {
4869         _primary->get_time_axis_view().hide_timestretch ();
4870 }
4871
4872 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4873         : Drag (e, i)
4874 {
4875         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4876 }
4877
4878 void
4879 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4880 {
4881         Drag::start_grab (event);
4882 }
4883
4884 void
4885 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4886 {
4887         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4888 }
4889
4890 void
4891 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4892 {
4893         if (movement_occurred && _editor->session()) {
4894                 /* make sure we stop */
4895                 _editor->session()->request_transport_speed (0.0);
4896         }
4897 }
4898
4899 void
4900 ScrubDrag::aborted (bool)
4901 {
4902         /* XXX: TODO */
4903 }
4904
4905 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4906         : Drag (e, i)
4907         , _operation (o)
4908         , _add (false)
4909         , _time_selection_at_start (!_editor->get_selection().time.empty())
4910 {
4911         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4912
4913         if (_time_selection_at_start) {
4914                 start_at_start = _editor->get_selection().time.start();
4915                 end_at_start = _editor->get_selection().time.end_frame();
4916         }
4917 }
4918
4919 void
4920 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4921 {
4922         if (_editor->session() == 0) {
4923                 return;
4924         }
4925
4926         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4927
4928         switch (_operation) {
4929         case CreateSelection:
4930                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4931                         _add = true;
4932                 } else {
4933                         _add = false;
4934                 }
4935                 cursor = _editor->cursors()->selector;
4936                 Drag::start_grab (event, cursor);
4937                 break;
4938
4939         case SelectionStartTrim:
4940                 if (_editor->clicked_axisview) {
4941                         _editor->clicked_axisview->order_selection_trims (_item, true);
4942                 }
4943                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4944                 break;
4945
4946         case SelectionEndTrim:
4947                 if (_editor->clicked_axisview) {
4948                         _editor->clicked_axisview->order_selection_trims (_item, false);
4949                 }
4950                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4951                 break;
4952
4953         case SelectionMove:
4954                 Drag::start_grab (event, cursor);
4955                 break;
4956
4957         case SelectionExtend:
4958                 Drag::start_grab (event, cursor);
4959                 break;
4960         }
4961
4962         if (_operation == SelectionMove) {
4963                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4964         } else {
4965                 show_verbose_cursor_time (adjusted_current_frame (event));
4966         }
4967 }
4968
4969 void
4970 SelectionDrag::setup_pointer_frame_offset ()
4971 {
4972         switch (_operation) {
4973         case CreateSelection:
4974                 _pointer_frame_offset = 0;
4975                 break;
4976
4977         case SelectionStartTrim:
4978         case SelectionMove:
4979                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4980                 break;
4981
4982         case SelectionEndTrim:
4983                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4984                 break;
4985
4986         case SelectionExtend:
4987                 break;
4988         }
4989 }
4990
4991 void
4992 SelectionDrag::motion (GdkEvent* event, bool first_move)
4993 {
4994         framepos_t start = 0;
4995         framepos_t end = 0;
4996         framecnt_t length = 0;
4997         framecnt_t distance = 0;
4998
4999         framepos_t const pending_position = adjusted_current_frame (event);
5000
5001         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
5002                 return;
5003         }
5004
5005         switch (_operation) {
5006         case CreateSelection:
5007         {
5008                 framepos_t grab = grab_frame ();
5009
5010                 if (first_move) {
5011                         grab = adjusted_current_frame (event, false);
5012                         if (grab < pending_position) {
5013                                 _editor->snap_to (grab, RoundDownMaybe);
5014                         }  else {
5015                                 _editor->snap_to (grab, RoundUpMaybe);
5016                         }
5017                 }
5018
5019                 if (pending_position < grab) {
5020                         start = pending_position;
5021                         end = grab;
5022                 } else {
5023                         end = pending_position;
5024                         start = grab;
5025                 }
5026
5027                 /* first drag: Either add to the selection
5028                    or create a new selection
5029                 */
5030
5031                 if (first_move) {
5032
5033                         if (_add) {
5034
5035                                 /* adding to the selection */
5036                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5037                                 _editor->clicked_selection = _editor->selection->add (start, end);
5038                                 _add = false;
5039
5040                         } else {
5041
5042                                 /* new selection */
5043
5044                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5045                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5046                                 }
5047
5048                                 _editor->clicked_selection = _editor->selection->set (start, end);
5049                         }
5050                 }
5051
5052                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5053                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5054                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5055                 if (atest) {
5056                         _editor->selection->add (atest);
5057                         break;
5058                 }
5059
5060                 /* select all tracks within the rectangle that we've marked out so far */
5061                 TrackViewList new_selection;
5062                 TrackViewList& all_tracks (_editor->track_views);
5063
5064                 ArdourCanvas::Coord const top = grab_y();
5065                 ArdourCanvas::Coord const bottom = current_pointer_y();
5066
5067                 if (top >= 0 && bottom >= 0) {
5068
5069                         //first, find the tracks that are covered in the y range selection
5070                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5071                                 if ((*i)->covered_by_y_range (top, bottom)) {
5072                                         new_selection.push_back (*i);
5073                                 }
5074                         }
5075
5076                         //now find any tracks that are GROUPED with the tracks we selected
5077                         TrackViewList grouped_add = new_selection;
5078                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5079                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5080                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5081                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5082                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5083                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5084                                                         grouped_add.push_back (*j);
5085                                         }
5086                                 }
5087                         }
5088
5089                         //now compare our list with the current selection, and add or remove as necessary
5090                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5091                         TrackViewList tracks_to_add;
5092                         TrackViewList tracks_to_remove;
5093                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5094                                 if ( !_editor->selection->tracks.contains ( *i ) )
5095                                         tracks_to_add.push_back ( *i );
5096                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5097                                 if ( !grouped_add.contains ( *i ) )
5098                                         tracks_to_remove.push_back ( *i );
5099                         _editor->selection->add(tracks_to_add);
5100                         _editor->selection->remove(tracks_to_remove);
5101
5102                 }
5103         }
5104         break;
5105
5106         case SelectionStartTrim:
5107
5108                 end = _editor->selection->time[_editor->clicked_selection].end;
5109
5110                 if (pending_position > end) {
5111                         start = end;
5112                 } else {
5113                         start = pending_position;
5114                 }
5115                 break;
5116
5117         case SelectionEndTrim:
5118
5119                 start = _editor->selection->time[_editor->clicked_selection].start;
5120
5121                 if (pending_position < start) {
5122                         end = start;
5123                 } else {
5124                         end = pending_position;
5125                 }
5126
5127                 break;
5128
5129         case SelectionMove:
5130
5131                 start = _editor->selection->time[_editor->clicked_selection].start;
5132                 end = _editor->selection->time[_editor->clicked_selection].end;
5133
5134                 length = end - start;
5135                 distance = pending_position - start;
5136                 start = pending_position;
5137                 _editor->snap_to (start);
5138
5139                 end = start + length;
5140
5141                 break;
5142
5143         case SelectionExtend:
5144                 break;
5145         }
5146
5147         if (start != end) {
5148                 switch (_operation) {
5149                 case SelectionMove:
5150                         if (_time_selection_at_start) {
5151                                 _editor->selection->move_time (distance);
5152                         }
5153                         break;
5154                 default:
5155                         _editor->selection->replace (_editor->clicked_selection, start, end);
5156                 }
5157         }
5158
5159         if (_operation == SelectionMove) {
5160                 show_verbose_cursor_time(start);
5161         } else {
5162                 show_verbose_cursor_time(pending_position);
5163         }
5164 }
5165
5166 void
5167 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5168 {
5169         Session* s = _editor->session();
5170
5171         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5172         if (movement_occurred) {
5173                 motion (event, false);
5174                 /* XXX this is not object-oriented programming at all. ick */
5175                 if (_editor->selection->time.consolidate()) {
5176                         _editor->selection->TimeChanged ();
5177                 }
5178
5179                 /* XXX what if its a music time selection? */
5180                 if (s) {
5181                         if (s->get_play_range() && s->transport_rolling()) {
5182                                 s->request_play_range (&_editor->selection->time, true);
5183                         } else if (!s->config.get_external_sync()) {
5184                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5185                                         if (_operation == SelectionEndTrim)
5186                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5187                                         else
5188                                                 s->request_locate (_editor->get_selection().time.start());
5189                                 }
5190                         }
5191
5192                         if (_editor->get_selection().time.length() != 0) {
5193                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5194                         } else {
5195                                 s->clear_range_selection ();
5196                         }
5197                 }
5198
5199         } else {
5200                 /* just a click, no pointer movement.
5201                  */
5202
5203                 if (_operation == SelectionExtend) {
5204                         if (_time_selection_at_start) {
5205                                 framepos_t pos = adjusted_current_frame (event, false);
5206                                 framepos_t start = min (pos, start_at_start);
5207                                 framepos_t end = max (pos, end_at_start);
5208                                 _editor->selection->set (start, end);
5209                         }
5210                 } else {
5211                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5212                                 if (_editor->clicked_selection) {
5213                                         _editor->selection->remove (_editor->clicked_selection);
5214                                 }
5215                         } else {
5216                                 if (!_editor->clicked_selection) {
5217                                         _editor->selection->clear_time();
5218                                 }
5219                         }
5220                 }
5221
5222                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5223                         _editor->selection->set (_editor->clicked_axisview);
5224                 }
5225
5226                 if (s && s->get_play_range () && s->transport_rolling()) {
5227                         s->request_stop (false, false);
5228                 }
5229
5230         }
5231
5232         _editor->stop_canvas_autoscroll ();
5233         _editor->clicked_selection = 0;
5234         _editor->commit_reversible_selection_op ();
5235 }
5236
5237 void
5238 SelectionDrag::aborted (bool)
5239 {
5240         /* XXX: TODO */
5241 }
5242
5243 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5244         : Drag (e, i, false),
5245           _operation (o),
5246           _copy (false)
5247 {
5248         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5249
5250         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5251                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5252                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5253         _drag_rect->hide ();
5254
5255         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5256         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5257 }
5258
5259 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5260 {
5261         /* normal canvas items will be cleaned up when their parent group is deleted. But
5262            this item is created as the child of a long-lived parent group, and so we
5263            need to explicitly delete it.
5264         */
5265         delete _drag_rect;
5266 }
5267
5268 void
5269 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5270 {
5271         if (_editor->session() == 0) {
5272                 return;
5273         }
5274
5275         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5276
5277         if (!_editor->temp_location) {
5278                 _editor->temp_location = new Location (*_editor->session());
5279         }
5280
5281         switch (_operation) {
5282         case CreateSkipMarker:
5283         case CreateRangeMarker:
5284         case CreateTransportMarker:
5285         case CreateCDMarker:
5286
5287                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5288                         _copy = true;
5289                 } else {
5290                         _copy = false;
5291                 }
5292                 cursor = _editor->cursors()->selector;
5293                 break;
5294         }
5295
5296         Drag::start_grab (event, cursor);
5297
5298         show_verbose_cursor_time (adjusted_current_frame (event));
5299 }
5300
5301 void
5302 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5303 {
5304         framepos_t start = 0;
5305         framepos_t end = 0;
5306         ArdourCanvas::Rectangle *crect;
5307
5308         switch (_operation) {
5309         case CreateSkipMarker:
5310                 crect = _editor->range_bar_drag_rect;
5311                 break;
5312         case CreateRangeMarker:
5313                 crect = _editor->range_bar_drag_rect;
5314                 break;
5315         case CreateTransportMarker:
5316                 crect = _editor->transport_bar_drag_rect;
5317                 break;
5318         case CreateCDMarker:
5319                 crect = _editor->cd_marker_bar_drag_rect;
5320                 break;
5321         default:
5322                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5323                 return;
5324                 break;
5325         }
5326
5327         framepos_t const pf = adjusted_current_frame (event);
5328
5329         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5330                 framepos_t grab = grab_frame ();
5331                 _editor->snap_to (grab);
5332
5333                 if (pf < grab_frame()) {
5334                         start = pf;
5335                         end = grab;
5336                 } else {
5337                         end = pf;
5338                         start = grab;
5339                 }
5340
5341                 /* first drag: Either add to the selection
5342                    or create a new selection.
5343                 */
5344
5345                 if (first_move) {
5346
5347                         _editor->temp_location->set (start, end);
5348
5349                         crect->show ();
5350
5351                         update_item (_editor->temp_location);
5352                         _drag_rect->show();
5353                         //_drag_rect->raise_to_top();
5354
5355                 }
5356         }
5357
5358         if (start != end) {
5359                 _editor->temp_location->set (start, end);
5360
5361                 double x1 = _editor->sample_to_pixel (start);
5362                 double x2 = _editor->sample_to_pixel (end);
5363                 crect->set_x0 (x1);
5364                 crect->set_x1 (x2);
5365
5366                 update_item (_editor->temp_location);
5367         }
5368
5369         show_verbose_cursor_time (pf);
5370
5371 }
5372
5373 void
5374 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5375 {
5376         Location * newloc = 0;
5377         string rangename;
5378         int flags;
5379
5380         if (movement_occurred) {
5381                 motion (event, false);
5382                 _drag_rect->hide();
5383
5384                 switch (_operation) {
5385                 case CreateSkipMarker:
5386                 case CreateRangeMarker:
5387                 case CreateCDMarker:
5388                     {
5389                         XMLNode &before = _editor->session()->locations()->get_state();
5390                         if (_operation == CreateSkipMarker) {
5391                                 _editor->begin_reversible_command (_("new skip marker"));
5392                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5393                                 flags = Location::IsRangeMarker | Location::IsSkip;
5394                                 _editor->range_bar_drag_rect->hide();
5395                         } else if (_operation == CreateCDMarker) {
5396                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5397                                 _editor->begin_reversible_command (_("new CD marker"));
5398                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5399                                 _editor->cd_marker_bar_drag_rect->hide();
5400                         } else {
5401                                 _editor->begin_reversible_command (_("new skip marker"));
5402                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5403                                 flags = Location::IsRangeMarker;
5404                                 _editor->range_bar_drag_rect->hide();
5405                         }
5406                         newloc = new Location (
5407                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5408                                 );
5409
5410                         _editor->session()->locations()->add (newloc, true);
5411                         XMLNode &after = _editor->session()->locations()->get_state();
5412                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5413                         _editor->commit_reversible_command ();
5414                         break;
5415                     }
5416
5417                 case CreateTransportMarker:
5418                         // popup menu to pick loop or punch
5419                         _editor->new_transport_marker_context_menu (&event->button, _item);
5420                         break;
5421                 }
5422
5423         } else {
5424
5425                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5426
5427                 if (_operation == CreateTransportMarker) {
5428
5429                         /* didn't drag, so just locate */
5430
5431                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5432
5433                 } else if (_operation == CreateCDMarker) {
5434
5435                         /* didn't drag, but mark is already created so do
5436                          * nothing */
5437
5438                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5439
5440                         framepos_t start;
5441                         framepos_t end;
5442
5443                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5444
5445                         if (end == max_framepos) {
5446                                 end = _editor->session()->current_end_frame ();
5447                         }
5448
5449                         if (start == max_framepos) {
5450                                 start = _editor->session()->current_start_frame ();
5451                         }
5452
5453                         switch (_editor->mouse_mode) {
5454                         case MouseObject:
5455                                 /* find the two markers on either side and then make the selection from it */
5456                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5457                                 break;
5458
5459                         case MouseRange:
5460                                 /* find the two markers on either side of the click and make the range out of it */
5461                                 _editor->selection->set (start, end);
5462                                 break;
5463
5464                         default:
5465                                 break;
5466                         }
5467                 }
5468         }
5469
5470         _editor->stop_canvas_autoscroll ();
5471 }
5472
5473 void
5474 RangeMarkerBarDrag::aborted (bool movement_occurred)
5475 {
5476         if (movement_occurred) {
5477                 _drag_rect->hide ();
5478         }
5479 }
5480
5481 void
5482 RangeMarkerBarDrag::update_item (Location* location)
5483 {
5484         double const x1 = _editor->sample_to_pixel (location->start());
5485         double const x2 = _editor->sample_to_pixel (location->end());
5486
5487         _drag_rect->set_x0 (x1);
5488         _drag_rect->set_x1 (x2);
5489 }
5490
5491 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5492         : Drag (e, i)
5493         , _cumulative_dx (0)
5494         , _cumulative_dy (0)
5495         , _was_selected (false)
5496 {
5497         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5498
5499         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5500         assert (_primary);
5501         _region = &_primary->region_view ();
5502         _note_height = _region->midi_stream_view()->note_height ();
5503 }
5504
5505 void
5506 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5507 {
5508         Drag::start_grab (event);
5509         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5510
5511         if (!(_was_selected = _primary->selected())) {
5512
5513                 /* tertiary-click means extend selection - we'll do that on button release,
5514                    so don't add it here, because otherwise we make it hard to figure
5515                    out the "extend-to" range.
5516                 */
5517
5518                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5519
5520                 if (!extend) {
5521                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5522
5523                         if (add) {
5524                                 _region->note_selected (_primary, true);
5525                         } else {
5526                                 _editor->get_selection().clear_points();
5527                                 _region->unique_select (_primary);
5528                         }
5529                 }
5530         }
5531 }
5532
5533 /** @return Current total drag x change in frames */
5534 frameoffset_t
5535 NoteDrag::total_dx (const guint state) const
5536 {
5537         /* dx in frames */
5538         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5539
5540         /* primary note time */
5541         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5542
5543         /* new time of the primary note in session frames */
5544         frameoffset_t st = n + dx + snap_delta (state);
5545
5546         framepos_t const rp = _region->region()->position ();
5547
5548         /* prevent the note being dragged earlier than the region's position */
5549         st = max (st, rp);
5550
5551         /* possibly snap and return corresponding delta */
5552
5553         bool snap = true;
5554
5555         if (ArdourKeyboard::indicates_snap (state)) {
5556                 if (_editor->snap_mode () != SnapOff) {
5557                         snap = false;
5558                 }
5559         } else {
5560                 if (_editor->snap_mode () == SnapOff) {
5561                         snap = false;
5562                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5563                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5564                                 snap = true;
5565                         }
5566                 }
5567         }
5568
5569         frameoffset_t ret;
5570         if (snap) {
5571                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5572                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5573         } else {
5574                 ret = st - n - snap_delta (state);
5575         }
5576         return ret;
5577 }
5578
5579 /** @return Current total drag y change in note number */
5580 int8_t
5581 NoteDrag::total_dy () const
5582 {
5583         MidiStreamView* msv = _region->midi_stream_view ();
5584         double const y = _region->midi_view()->y_position ();
5585         /* new current note */
5586         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5587         /* clamp */
5588         n = max (msv->lowest_note(), n);
5589         n = min (msv->highest_note(), n);
5590         /* and work out delta */
5591         return n - msv->y_to_note (grab_y() - y);
5592 }
5593
5594 void
5595 NoteDrag::motion (GdkEvent * event, bool)
5596 {
5597         /* Total change in x and y since the start of the drag */
5598         frameoffset_t const dx = total_dx (event->button.state);
5599         int8_t const dy = total_dy ();
5600
5601         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5602         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5603         double const tdy = -dy * _note_height - _cumulative_dy;
5604
5605         if (tdx || tdy) {
5606                 _cumulative_dx += tdx;
5607                 _cumulative_dy += tdy;
5608
5609                 int8_t note_delta = total_dy();
5610
5611                 _region->move_selection (tdx, tdy, note_delta);
5612
5613                 /* the new note value may be the same as the old one, but we
5614                  * don't know what that means because the selection may have
5615                  * involved more than one note and we might be doing something
5616                  * odd with them. so show the note value anyway, always.
5617                  */
5618
5619                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5620
5621                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5622         }
5623 }
5624
5625 void
5626 NoteDrag::finished (GdkEvent* ev, bool moved)
5627 {
5628         if (!moved) {
5629                 /* no motion - select note */
5630
5631                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5632                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5633
5634                         bool changed = false;
5635
5636                         if (_was_selected) {
5637                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5638                                 if (add) {
5639                                         _region->note_deselected (_primary);
5640                                         changed = true;
5641                                 } else {
5642                                         _editor->get_selection().clear_points();
5643                                         _region->unique_select (_primary);
5644                                         changed = true;
5645                                 }
5646                         } else {
5647                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5648                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5649
5650                                 if (!extend && !add && _region->selection_size() > 1) {
5651                                         _editor->get_selection().clear_points();
5652                                         _region->unique_select (_primary);
5653                                         changed = true;
5654                                 } else if (extend) {
5655                                         _region->note_selected (_primary, true, true);
5656                                         changed = true;
5657                                 } else {
5658                                         /* it was added during button press */
5659                                         changed = true;
5660
5661                                 }
5662                         }
5663
5664                         if (changed) {
5665                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5666                                 _editor->commit_reversible_selection_op();
5667                         }
5668                 }
5669         } else {
5670                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5671         }
5672 }
5673
5674 void
5675 NoteDrag::aborted (bool)
5676 {
5677         /* XXX: TODO */
5678 }
5679
5680 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5681 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5682         : Drag (editor, atv->base_item ())
5683         , _ranges (r)
5684         , _y_origin (atv->y_position())
5685         , _nothing_to_drag (false)
5686 {
5687         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5688         setup (atv->lines ());
5689 }
5690
5691 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5692 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5693         : Drag (editor, rv->get_canvas_group ())
5694         , _ranges (r)
5695         , _y_origin (rv->get_time_axis_view().y_position())
5696         , _nothing_to_drag (false)
5697         , _integral (false)
5698 {
5699         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5700
5701         list<boost::shared_ptr<AutomationLine> > lines;
5702
5703         AudioRegionView*      audio_view;
5704         AutomationRegionView* automation_view;
5705         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5706                 lines.push_back (audio_view->get_gain_line ());
5707         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5708                 lines.push_back (automation_view->line ());
5709                 _integral = true;
5710         } else {
5711                 error << _("Automation range drag created for invalid region type") << endmsg;
5712         }
5713
5714         setup (lines);
5715 }
5716
5717 /** @param lines AutomationLines to drag.
5718  *  @param offset Offset from the session start to the points in the AutomationLines.
5719  */
5720 void
5721 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5722 {
5723         /* find the lines that overlap the ranges being dragged */
5724         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5725         while (i != lines.end ()) {
5726                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5727                 ++j;
5728
5729                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5730
5731                 /* check this range against all the AudioRanges that we are using */
5732                 list<AudioRange>::const_iterator k = _ranges.begin ();
5733                 while (k != _ranges.end()) {
5734                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5735                                 break;
5736                         }
5737                         ++k;
5738                 }
5739
5740                 /* add it to our list if it overlaps at all */
5741                 if (k != _ranges.end()) {
5742                         Line n;
5743                         n.line = *i;
5744                         n.state = 0;
5745                         n.range = r;
5746                         _lines.push_back (n);
5747                 }
5748
5749                 i = j;
5750         }
5751
5752         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5753 }
5754
5755 double
5756 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5757 {
5758         return 1.0 - ((global_y - _y_origin) / line->height());
5759 }
5760
5761 double
5762 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5763 {
5764         const double v = list->eval(x);
5765         return _integral ? rint(v) : v;
5766 }
5767
5768 void
5769 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5770 {
5771         Drag::start_grab (event, cursor);
5772
5773         /* Get line states before we start changing things */
5774         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5775                 i->state = &i->line->get_state ();
5776                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5777         }
5778
5779         if (_ranges.empty()) {
5780
5781                 /* No selected time ranges: drag all points */
5782                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5783                         uint32_t const N = i->line->npoints ();
5784                         for (uint32_t j = 0; j < N; ++j) {
5785                                 i->points.push_back (i->line->nth (j));
5786                         }
5787                 }
5788
5789         }
5790
5791         if (_nothing_to_drag) {
5792                 return;
5793         }
5794 }
5795
5796 void
5797 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5798 {
5799         if (_nothing_to_drag && !first_move) {
5800                 return;
5801         }
5802
5803         if (first_move) {
5804                 _editor->begin_reversible_command (_("automation range move"));
5805
5806                 if (!_ranges.empty()) {
5807
5808                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5809
5810                                 framecnt_t const half = (i->start + i->end) / 2;
5811
5812                                 /* find the line that this audio range starts in */
5813                                 list<Line>::iterator j = _lines.begin();
5814                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5815                                         ++j;
5816                                 }
5817
5818                                 if (j != _lines.end()) {
5819                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5820
5821                                 /* j is the line that this audio range starts in; fade into it;
5822                                    64 samples length plucked out of thin air.
5823                                 */
5824
5825                                         framepos_t a = i->start + 64;
5826                                         if (a > half) {
5827                                                 a = half;
5828                                         }
5829
5830                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5831                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5832
5833                                         XMLNode &before = the_list->get_state();
5834                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5835                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5836
5837                                         if (add_p || add_q) {
5838                                                 _editor->session()->add_command (
5839                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5840                                         }
5841                                 }
5842
5843                                 /* same thing for the end */
5844
5845                                 j = _lines.begin();
5846                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5847                                         ++j;
5848                                 }
5849
5850                                 if (j != _lines.end()) {
5851                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5852
5853                                         /* j is the line that this audio range starts in; fade out of it;
5854                                            64 samples length plucked out of thin air.
5855                                         */
5856
5857                                         framepos_t b = i->end - 64;
5858                                         if (b < half) {
5859                                                 b = half;
5860                                         }
5861
5862                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5863                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5864
5865                                         XMLNode &before = the_list->get_state();
5866                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5867                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5868
5869                                         if (add_p || add_q) {
5870                                                 _editor->session()->add_command (
5871                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5872                                         }
5873                                 }
5874                         }
5875
5876                         _nothing_to_drag = true;
5877
5878                         /* Find all the points that should be dragged and put them in the relevant
5879                            points lists in the Line structs.
5880                         */
5881
5882                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5883
5884                                 uint32_t const N = i->line->npoints ();
5885                                 for (uint32_t j = 0; j < N; ++j) {
5886
5887                                         /* here's a control point on this line */
5888                                         ControlPoint* p = i->line->nth (j);
5889                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5890
5891                                         /* see if it's inside a range */
5892                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5893                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5894                                                 ++k;
5895                                         }
5896
5897                                         if (k != _ranges.end()) {
5898                                                 /* dragging this point */
5899                                                 _nothing_to_drag = false;
5900                                                 i->points.push_back (p);
5901                                         }
5902                                 }
5903                         }
5904                 }
5905
5906                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5907                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5908                 }
5909         }
5910
5911         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5912                 float const f = y_fraction (l->line, current_pointer_y());
5913                 /* we are ignoring x position for this drag, so we can just pass in anything */
5914                 pair<double, float> result;
5915                 uint32_t ignored;
5916                 result = l->line->drag_motion (0, f, true, false, ignored);
5917                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5918         }
5919 }
5920
5921 void
5922 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5923 {
5924         if (_nothing_to_drag || !motion_occurred) {
5925                 return;
5926         }
5927
5928         motion (event, false);
5929         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5930                 i->line->end_drag (false, 0);
5931         }
5932
5933         _editor->commit_reversible_command ();
5934 }
5935
5936 void
5937 AutomationRangeDrag::aborted (bool)
5938 {
5939         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5940                 i->line->reset ();
5941         }
5942 }
5943
5944 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5945         : view (v)
5946         , initial_time_axis_view (itav)
5947 {
5948         /* note that time_axis_view may be null if the regionview was created
5949          * as part of a copy operation.
5950          */
5951         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5952         layer = v->region()->layer ();
5953         initial_y = v->get_canvas_group()->position().y;
5954         initial_playlist = v->region()->playlist ();
5955         initial_position = v->region()->position ();
5956         initial_end = v->region()->position () + v->region()->length ();
5957 }
5958
5959 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5960         : Drag (e, i->canvas_item ())
5961         , _region_view (r)
5962         , _patch_change (i)
5963         , _cumulative_dx (0)
5964 {
5965         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5966                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5967                                                    grab_frame()));
5968 }
5969
5970 void
5971 PatchChangeDrag::motion (GdkEvent* ev, bool)
5972 {
5973         framepos_t f = adjusted_current_frame (ev);
5974         boost::shared_ptr<Region> r = _region_view->region ();
5975         f = max (f, r->position ());
5976         f = min (f, r->last_frame ());
5977
5978         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5979         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5980         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5981         _cumulative_dx = dxu;
5982 }
5983
5984 void
5985 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5986 {
5987         if (!movement_occurred) {
5988                 return;
5989         }
5990
5991         boost::shared_ptr<Region> r (_region_view->region ());
5992         framepos_t f = adjusted_current_frame (ev);
5993         f = max (f, r->position ());
5994         f = min (f, r->last_frame ());
5995
5996         _region_view->move_patch_change (
5997                 *_patch_change,
5998                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5999                 );
6000 }
6001
6002 void
6003 PatchChangeDrag::aborted (bool)
6004 {
6005         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
6006 }
6007
6008 void
6009 PatchChangeDrag::setup_pointer_frame_offset ()
6010 {
6011         boost::shared_ptr<Region> region = _region_view->region ();
6012         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
6013 }
6014
6015 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
6016         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6017         , _region_view (rv)
6018 {
6019
6020 }
6021
6022 void
6023 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
6024 {
6025         _region_view->update_drag_selection (
6026                 x1, x2, y1, y2,
6027                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
6028 }
6029
6030 void
6031 MidiRubberbandSelectDrag::deselect_things ()
6032 {
6033         /* XXX */
6034 }
6035
6036 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6037         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6038         , _region_view (rv)
6039 {
6040         _vertical_only = true;
6041 }
6042
6043 void
6044 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6045 {
6046         double const y = _region_view->midi_view()->y_position ();
6047
6048         y1 = max (0.0, y1 - y);
6049         y2 = max (0.0, y2 - y);
6050
6051         _region_view->update_vertical_drag_selection (
6052                 y1,
6053                 y2,
6054                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6055                 );
6056 }
6057
6058 void
6059 MidiVerticalSelectDrag::deselect_things ()
6060 {
6061         /* XXX */
6062 }
6063
6064 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6065         : RubberbandSelectDrag (e, i)
6066 {
6067
6068 }
6069
6070 void
6071 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6072 {
6073         if (drag_in_progress) {
6074                 /* We just want to select things at the end of the drag, not during it */
6075                 return;
6076         }
6077
6078         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6079
6080         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6081
6082         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6083
6084         _editor->commit_reversible_selection_op ();
6085 }
6086
6087 void
6088 EditorRubberbandSelectDrag::deselect_things ()
6089 {
6090         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6091
6092         _editor->selection->clear_tracks();
6093         _editor->selection->clear_regions();
6094         _editor->selection->clear_points ();
6095         _editor->selection->clear_lines ();
6096         _editor->selection->clear_midi_notes ();
6097
6098         _editor->commit_reversible_selection_op();
6099 }
6100
6101 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6102         : Drag (e, i)
6103         , _region_view (rv)
6104         , _drag_rect (0)
6105 {
6106         _note[0] = _note[1] = 0;
6107 }
6108
6109 NoteCreateDrag::~NoteCreateDrag ()
6110 {
6111         delete _drag_rect;
6112 }
6113
6114 framecnt_t
6115 NoteCreateDrag::grid_frames (framepos_t t) const
6116 {
6117         bool success;
6118         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6119         if (!success) {
6120                 grid_beats = Evoral::Beats(1);
6121         }
6122
6123         return _region_view->region_beats_to_region_frames (grid_beats);
6124 }
6125
6126 void
6127 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6128 {
6129         Drag::start_grab (event, cursor);
6130
6131         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6132
6133         framepos_t pf = _drags->current_pointer_frame ();
6134         framecnt_t const g = grid_frames (pf);
6135
6136         /* Hack so that we always snap to the note that we are over, instead of snapping
6137            to the next one if we're more than halfway through the one we're over.
6138         */
6139         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6140                 pf -= g / 2;
6141         }
6142
6143         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6144         _note[1] = _note[0];
6145
6146         MidiStreamView* sv = _region_view->midi_stream_view ();
6147         double const x = _editor->sample_to_pixel (_note[0]);
6148         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6149
6150         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6151         _drag_rect->set_outline_all ();
6152         _drag_rect->set_outline_color (0xffffff99);
6153         _drag_rect->set_fill_color (0xffffff66);
6154 }
6155
6156 void
6157 NoteCreateDrag::motion (GdkEvent* event, bool)
6158 {
6159         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6160         double const x0 = _editor->sample_to_pixel (_note[0]);
6161         double const x1 = _editor->sample_to_pixel (_note[1]);
6162         _drag_rect->set_x0 (std::min(x0, x1));
6163         _drag_rect->set_x1 (std::max(x0, x1));
6164 }
6165
6166 void
6167 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6168 {
6169         if (!had_movement) {
6170                 return;
6171         }
6172
6173         framepos_t const start = min (_note[0], _note[1]);
6174         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6175
6176         framecnt_t const g = grid_frames (start);
6177         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6178
6179         if (_editor->snap_mode() == SnapNormal && length < g) {
6180                 length = g;
6181         }
6182
6183         Evoral::Beats length_beats = max (
6184                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6185
6186         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6187 }
6188
6189 double
6190 NoteCreateDrag::y_to_region (double y) const
6191 {
6192         double x = 0;
6193         _region_view->get_canvas_group()->canvas_to_item (x, y);
6194         return y;
6195 }
6196
6197 void
6198 NoteCreateDrag::aborted (bool)
6199 {
6200
6201 }
6202
6203 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6204         : Drag (e, i)
6205         , arv (rv)
6206         , start (start_yn)
6207 {
6208         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6209 }
6210
6211 void
6212 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6213 {
6214         Drag::start_grab (event, cursor);
6215 }
6216
6217 void
6218 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6219 {
6220         double distance;
6221         double new_length;
6222         framecnt_t len;
6223
6224         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6225
6226         if (start) {
6227                 distance = _drags->current_pointer_x() - grab_x();
6228                 len = ar->fade_in()->back()->when;
6229         } else {
6230                 distance = grab_x() - _drags->current_pointer_x();
6231                 len = ar->fade_out()->back()->when;
6232         }
6233
6234         /* how long should it be ? */
6235
6236         new_length = len + _editor->pixel_to_sample (distance);
6237
6238         /* now check with the region that this is legal */
6239
6240         new_length = ar->verify_xfade_bounds (new_length, start);
6241
6242         if (start) {
6243                 arv->reset_fade_in_shape_width (ar, new_length);
6244         } else {
6245                 arv->reset_fade_out_shape_width (ar, new_length);
6246         }
6247 }
6248
6249 void
6250 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6251 {
6252         double distance;
6253         double new_length;
6254         framecnt_t len;
6255
6256         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6257
6258         if (start) {
6259                 distance = _drags->current_pointer_x() - grab_x();
6260                 len = ar->fade_in()->back()->when;
6261         } else {
6262                 distance = grab_x() - _drags->current_pointer_x();
6263                 len = ar->fade_out()->back()->when;
6264         }
6265
6266         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6267
6268         _editor->begin_reversible_command ("xfade trim");
6269         ar->playlist()->clear_owned_changes ();
6270
6271         if (start) {
6272                 ar->set_fade_in_length (new_length);
6273         } else {
6274                 ar->set_fade_out_length (new_length);
6275         }
6276
6277         /* Adjusting the xfade may affect other regions in the playlist, so we need
6278            to get undo Commands from the whole playlist rather than just the
6279            region.
6280         */
6281
6282         vector<Command*> cmds;
6283         ar->playlist()->rdiff (cmds);
6284         _editor->session()->add_commands (cmds);
6285         _editor->commit_reversible_command ();
6286
6287 }
6288
6289 void
6290 CrossfadeEdgeDrag::aborted (bool)
6291 {
6292         if (start) {
6293                 // arv->redraw_start_xfade ();
6294         } else {
6295                 // arv->redraw_end_xfade ();
6296         }
6297 }
6298
6299 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6300         : Drag (e, item, true)
6301         , line (new EditorCursor (*e))
6302 {
6303         line->set_position (pos);
6304         line->show ();
6305 }
6306
6307 RegionCutDrag::~RegionCutDrag ()
6308 {
6309         delete line;
6310 }
6311
6312 void
6313 RegionCutDrag::motion (GdkEvent*, bool)
6314 {
6315         framepos_t where = _drags->current_pointer_frame();
6316         _editor->snap_to (where);
6317
6318         line->set_position (where);
6319 }
6320
6321 void
6322 RegionCutDrag::finished (GdkEvent*, bool)
6323 {
6324         _editor->get_track_canvas()->canvas()->re_enter();
6325
6326         framepos_t pos = _drags->current_pointer_frame();
6327
6328         line->hide ();
6329
6330         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6331
6332         if (rs.empty()) {
6333                 return;
6334         }
6335
6336         _editor->split_regions_at (pos, rs);
6337 }
6338
6339 void
6340 RegionCutDrag::aborted (bool)
6341 {
6342 }