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
3204                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3205                         _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3206                 } else if (bbt.bars > _real_section->bbt().bars) {
3207                         const double pulse = _real_section->pulse() + (_real_section->note_divisor() / _real_section->divisions_per_bar());
3208                         _editor->session()->tempo_map().gui_move_meter (_real_section, pulse);
3209                 } else if (bbt.bars < _real_section->bbt().bars) {
3210                         const MeterSection& prev_m = map.meter_section_at (pf);
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_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3217                         if (_real_section->movable()) {
3218                                 _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3219                         }
3220                 } else {
3221                         _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3222                 }
3223         }
3224         _marker->set_position (pf);
3225         show_verbose_cursor_time (_real_section->frame());
3226 }
3227
3228 void
3229 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3230 {
3231         if (!movement_occurred) {
3232                 if (was_double_click()) {
3233                         _editor->edit_meter_marker (*_marker);
3234                 }
3235                 return;
3236         }
3237
3238         TempoMap& map (_editor->session()->tempo_map());
3239
3240         XMLNode &after = map.get_state();
3241         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3242         _editor->commit_reversible_command ();
3243
3244         // delete the dummy marker we used for visual representation while moving.
3245         // a new visual marker will show up automatically.
3246         delete _marker;
3247 }
3248
3249 void
3250 MeterMarkerDrag::aborted (bool moved)
3251 {
3252         _marker->set_position (_marker->meter().frame ());
3253         if (moved) {
3254                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3255                 // delete the dummy marker we used for visual representation while moving.
3256                 // a new visual marker will show up automatically.
3257                 delete _marker;
3258         }
3259 }
3260
3261 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3262         : Drag (e, i)
3263         , _copy (c)
3264         , before_state (0)
3265 {
3266         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3267
3268         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3269         _real_section = &_marker->tempo();
3270         _movable = _real_section->movable();
3271         assert (_marker);
3272 }
3273
3274 void
3275 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3276 {
3277         Drag::start_grab (event, cursor);
3278         if (!_real_section->active()) {
3279                 show_verbose_cursor_text (_("inactive"));
3280         } else {
3281                 show_verbose_cursor_time (adjusted_current_frame (event));
3282         }
3283 }
3284
3285 void
3286 TempoMarkerDrag::setup_pointer_frame_offset ()
3287 {
3288         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3289 }
3290
3291 void
3292 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3293 {
3294         if (!_real_section->active() || _real_section->locked_to_meter()) {
3295                 return;
3296         }
3297         if (first_move) {
3298
3299                 // mvc drag - create a dummy marker to catch events, hide it.
3300
3301                 char name[64];
3302                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3303
3304                 TempoSection section (_marker->tempo());
3305
3306                 _marker = new TempoMarker (
3307                         *_editor,
3308                         *_editor->tempo_group,
3309                         UIConfiguration::instance().color ("tempo marker"),
3310                         name,
3311                         *new TempoSection (_marker->tempo())
3312                         );
3313
3314                 /* use the new marker for the grab */
3315                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3316                 _marker->hide();
3317
3318                 TempoMap& map (_editor->session()->tempo_map());
3319                 /* get current state */
3320                 before_state = &map.get_state();
3321                 if (!_copy) {
3322                         _editor->begin_reversible_command (_("move tempo mark"));
3323                 } else {
3324                         _editor->begin_reversible_command (_("copy tempo mark"));
3325                         framepos_t frame;
3326                         bool use_snap = false;
3327
3328                         if (!_editor->snap_musical()) {
3329                                 frame = adjusted_current_frame (event);
3330                         } else {
3331                                 frame = adjusted_current_frame (event, false);
3332                                 if (ArdourKeyboard::indicates_snap (event->button.state)) {
3333                                         if (_editor->snap_mode() == Editing::SnapOff) {
3334                                                 use_snap = true;
3335                                         } else {
3336                                                 use_snap = false;
3337                                         }
3338                                 } else {
3339                                         if (_editor->snap_mode() == Editing::SnapOff) {
3340                                                 use_snap = false;
3341                                         } else {
3342                                                 use_snap = true;
3343                                         }
3344                                 }
3345                         }
3346
3347                         Timecode::BBT_Time bbt;
3348                         map.bbt_time (frame, bbt);
3349
3350                         /* add new tempo section to map, ensuring we don't refer to existing tempos for snap */
3351
3352                         if (_real_section->position_lock_style() == MusicTime) {
3353                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3354                                         map.round_bbt (bbt, -1);
3355                                 } else if (use_snap) {
3356                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3357                                 }
3358                                 double const pulse = map.predict_tempo_pulse (_real_section, map.frame_time (bbt));
3359                                 _real_section = map.add_tempo (_marker->tempo(), pulse, _real_section->type());
3360                         } else {
3361                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3362                                         map.round_bbt (bbt, -1);
3363                                 } else if (use_snap) {
3364                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3365                                 }
3366                                 if (use_snap) {
3367                                         frame = map.predict_tempo_frame (_real_section, bbt);
3368                                 }
3369                                 _real_section = map.add_tempo (_marker->tempo(), frame, _real_section->type());
3370                         }
3371                 }
3372
3373         }
3374
3375         framepos_t pf;
3376         Tempo const tp = _marker->tempo();
3377         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3378                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3379                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3380                 stringstream strs;
3381                 strs << new_bpm;
3382                 show_verbose_cursor_text (strs.str());
3383         } else if (_movable) {
3384                 if (!_editor->snap_musical()) {
3385                         /* snap normally (this is not self-referential).*/
3386                         pf = adjusted_current_frame (event);
3387                 } else {
3388                         /* but this is.
3389                            we can't use the map for anything related to tempo,
3390                            so we round bbt using meters, which have no dependency
3391                            on pulse for this kind of thing.
3392                         */
3393                         bool use_snap;
3394                         TempoMap& map (_editor->session()->tempo_map());
3395
3396                         pf = adjusted_current_frame (event, false);
3397                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
3398                                 if (_editor->snap_mode() == Editing::SnapOff) {
3399                                         use_snap = true;
3400                                 } else {
3401                                         use_snap = false;
3402                                 }
3403                         } else {
3404                                 if (_editor->snap_mode() == Editing::SnapOff) {
3405                                         use_snap = false;
3406                                 } else {
3407                                         use_snap = true;
3408                                 }
3409                         }
3410
3411                         Timecode::BBT_Time when;
3412                         map.bbt_time (pf, when);
3413
3414                         if (_real_section->position_lock_style() == MusicTime) {
3415
3416                                 const double pulse = map.predict_tempo_pulse (_real_section, pf);
3417                                 when = map.pulse_to_bbt (pulse);
3418                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3419                                         map.round_bbt (when, -1);
3420                                 } else if (use_snap) {
3421                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3422                                 }
3423                                 const double beat = map.bbt_to_beats (when);
3424                                 map.gui_move_tempo_beat (_real_section, beat);
3425                         } else {
3426                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3427                                         map.round_bbt (when, -1);
3428                                 } else if (use_snap) {
3429                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3430                                 }
3431                                 if (use_snap) {
3432                                         pf = map.predict_tempo_frame (_real_section, when);
3433                                 }
3434                                 map.gui_move_tempo_frame (_real_section, pf);
3435                         }
3436                 }
3437
3438                 show_verbose_cursor_time (_real_section->frame());
3439         }
3440         _marker->set_position (pf);
3441 }
3442
3443 void
3444 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3445 {
3446         if (!_real_section->active() || _real_section->locked_to_meter()) {
3447                 return;
3448         }
3449         if (!movement_occurred) {
3450                 if (was_double_click()) {
3451                         _editor->edit_tempo_marker (*_marker);
3452                 }
3453                 return;
3454         }
3455
3456         TempoMap& map (_editor->session()->tempo_map());
3457
3458         XMLNode &after = map.get_state();
3459         _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3460         _editor->commit_reversible_command ();
3461
3462         // delete the dummy marker we used for visual representation while moving.
3463         // a new visual marker will show up automatically.
3464         delete _marker;
3465 }
3466
3467 void
3468 TempoMarkerDrag::aborted (bool moved)
3469 {
3470         _marker->set_position (_marker->tempo().frame());
3471         if (moved) {
3472                 TempoMap& map (_editor->session()->tempo_map());
3473                 map.set_state (*before_state, Stateful::current_state_version);
3474                 // delete the dummy marker we used for visual representation while moving.
3475                 // a new visual marker will show up automatically.
3476                 delete _marker;
3477         }
3478 }
3479
3480 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3481         : Drag (e, &c.track_canvas_item(), false)
3482         , _cursor (c)
3483         , _stop (s)
3484         , _grab_zoom (0.0)
3485 {
3486         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3487 }
3488
3489 /** Do all the things we do when dragging the playhead to make it look as though
3490  *  we have located, without actually doing the locate (because that would cause
3491  *  the diskstream buffers to be refilled, which is too slow).
3492  */
3493 void
3494 CursorDrag::fake_locate (framepos_t t)
3495 {
3496         if (_editor->session () == 0) {
3497                 return;
3498         }
3499
3500         _editor->playhead_cursor->set_position (t);
3501
3502         Session* s = _editor->session ();
3503         if (s->timecode_transmission_suspended ()) {
3504                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3505                 /* This is asynchronous so it will be sent "now"
3506                  */
3507                 s->send_mmc_locate (f);
3508                 /* These are synchronous and will be sent during the next
3509                    process cycle
3510                 */
3511                 s->queue_full_time_code ();
3512                 s->queue_song_position_pointer ();
3513         }
3514
3515         show_verbose_cursor_time (t);
3516         _editor->UpdateAllTransportClocks (t);
3517 }
3518
3519 void
3520 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3521 {
3522         Drag::start_grab (event, c);
3523         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3524
3525         _grab_zoom = _editor->samples_per_pixel;
3526
3527         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3528
3529         _editor->snap_to_with_modifier (where, event);
3530
3531         _editor->_dragging_playhead = true;
3532
3533         Session* s = _editor->session ();
3534
3535         /* grab the track canvas item as well */
3536
3537         _cursor.track_canvas_item().grab();
3538
3539         if (s) {
3540                 if (_was_rolling && _stop) {
3541                         s->request_stop ();
3542                 }
3543
3544                 if (s->is_auditioning()) {
3545                         s->cancel_audition ();
3546                 }
3547
3548
3549                 if (AudioEngine::instance()->connected()) {
3550
3551                         /* do this only if we're the engine is connected
3552                          * because otherwise this request will never be
3553                          * serviced and we'll busy wait forever. likewise,
3554                          * notice if we are disconnected while waiting for the
3555                          * request to be serviced.
3556                          */
3557
3558                         s->request_suspend_timecode_transmission ();
3559                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3560                                 /* twiddle our thumbs */
3561                         }
3562                 }
3563         }
3564
3565         fake_locate (where - snap_delta (event->button.state));
3566 }
3567
3568 void
3569 CursorDrag::motion (GdkEvent* event, bool)
3570 {
3571         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3572         _editor->snap_to_with_modifier (where, event);
3573         if (where != last_pointer_frame()) {
3574                 fake_locate (where - snap_delta (event->button.state));
3575         }
3576 }
3577
3578 void
3579 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3580 {
3581         _editor->_dragging_playhead = false;
3582
3583         _cursor.track_canvas_item().ungrab();
3584
3585         if (!movement_occurred && _stop) {
3586                 return;
3587         }
3588
3589         motion (event, false);
3590
3591         Session* s = _editor->session ();
3592         if (s) {
3593                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3594                 _editor->_pending_locate_request = true;
3595                 s->request_resume_timecode_transmission ();
3596         }
3597 }
3598
3599 void
3600 CursorDrag::aborted (bool)
3601 {
3602         _cursor.track_canvas_item().ungrab();
3603
3604         if (_editor->_dragging_playhead) {
3605                 _editor->session()->request_resume_timecode_transmission ();
3606                 _editor->_dragging_playhead = false;
3607         }
3608
3609         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3610 }
3611
3612 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3613         : RegionDrag (e, i, p, v)
3614 {
3615         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3616 }
3617
3618 void
3619 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3620 {
3621         Drag::start_grab (event, cursor);
3622
3623         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3624         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3625         setup_snap_delta (r->position ());
3626
3627         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3628 }
3629
3630 void
3631 FadeInDrag::setup_pointer_frame_offset ()
3632 {
3633         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3634         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3635         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3636 }
3637
3638 void
3639 FadeInDrag::motion (GdkEvent* event, bool)
3640 {
3641         framecnt_t fade_length;
3642
3643         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3644         _editor->snap_to_with_modifier (pos, event);
3645         pos -= snap_delta (event->button.state);
3646
3647         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3648
3649         if (pos < (region->position() + 64)) {
3650                 fade_length = 64; // this should be a minimum defined somewhere
3651         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3652                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3653         } else {
3654                 fade_length = pos - region->position();
3655         }
3656
3657         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3658
3659                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3660
3661                 if (!tmp) {
3662                         continue;
3663                 }
3664
3665                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3666         }
3667
3668         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3669 }
3670
3671 void
3672 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3673 {
3674         if (!movement_occurred) {
3675                 return;
3676         }
3677
3678         framecnt_t fade_length;
3679         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3680         _editor->snap_to_with_modifier (pos, event);
3681         pos -= snap_delta (event->button.state);
3682
3683         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3684
3685         if (pos < (region->position() + 64)) {
3686                 fade_length = 64; // this should be a minimum defined somewhere
3687         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3688                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3689         } else {
3690                 fade_length = pos - region->position();
3691         }
3692
3693         bool in_command = false;
3694
3695         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3696
3697                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3698
3699                 if (!tmp) {
3700                         continue;
3701                 }
3702
3703                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3704                 XMLNode &before = alist->get_state();
3705
3706                 tmp->audio_region()->set_fade_in_length (fade_length);
3707                 tmp->audio_region()->set_fade_in_active (true);
3708
3709                 if (!in_command) {
3710                         _editor->begin_reversible_command (_("change fade in length"));
3711                         in_command = true;
3712                 }
3713                 XMLNode &after = alist->get_state();
3714                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3715         }
3716
3717         if (in_command) {
3718                 _editor->commit_reversible_command ();
3719         }
3720 }
3721
3722 void
3723 FadeInDrag::aborted (bool)
3724 {
3725         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3726                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3727
3728                 if (!tmp) {
3729                         continue;
3730                 }
3731
3732                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3733         }
3734 }
3735
3736 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3737         : RegionDrag (e, i, p, v)
3738 {
3739         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3740 }
3741
3742 void
3743 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3744 {
3745         Drag::start_grab (event, cursor);
3746
3747         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3748         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3749         setup_snap_delta (r->last_frame ());
3750
3751         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3752 }
3753
3754 void
3755 FadeOutDrag::setup_pointer_frame_offset ()
3756 {
3757         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3758         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3759         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3760 }
3761
3762 void
3763 FadeOutDrag::motion (GdkEvent* event, bool)
3764 {
3765         framecnt_t fade_length;
3766
3767         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3768         _editor->snap_to_with_modifier (pos, event);
3769         pos -= snap_delta (event->button.state);
3770
3771         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3772
3773         if (pos > (region->last_frame() - 64)) {
3774                 fade_length = 64; // this should really be a minimum fade defined somewhere
3775         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3776                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3777         } else {
3778                 fade_length = region->last_frame() - pos;
3779         }
3780
3781         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3782
3783                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3784
3785                 if (!tmp) {
3786                         continue;
3787                 }
3788
3789                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3790         }
3791
3792         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3793 }
3794
3795 void
3796 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3797 {
3798         if (!movement_occurred) {
3799                 return;
3800         }
3801
3802         framecnt_t fade_length;
3803
3804         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3805         _editor->snap_to_with_modifier (pos, event);
3806         pos -= snap_delta (event->button.state);
3807
3808         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3809
3810         if (pos > (region->last_frame() - 64)) {
3811                 fade_length = 64; // this should really be a minimum fade defined somewhere
3812         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3813                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3814         } else {
3815                 fade_length = region->last_frame() - pos;
3816         }
3817
3818         bool in_command = false;
3819
3820         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3821
3822                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3823
3824                 if (!tmp) {
3825                         continue;
3826                 }
3827
3828                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3829                 XMLNode &before = alist->get_state();
3830
3831                 tmp->audio_region()->set_fade_out_length (fade_length);
3832                 tmp->audio_region()->set_fade_out_active (true);
3833
3834                 if (!in_command) {
3835                         _editor->begin_reversible_command (_("change fade out length"));
3836                         in_command = true;
3837                 }
3838                 XMLNode &after = alist->get_state();
3839                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3840         }
3841
3842         if (in_command) {
3843                 _editor->commit_reversible_command ();
3844         }
3845 }
3846
3847 void
3848 FadeOutDrag::aborted (bool)
3849 {
3850         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3851                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3852
3853                 if (!tmp) {
3854                         continue;
3855                 }
3856
3857                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3858         }
3859 }
3860
3861 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3862         : Drag (e, i)
3863         , _selection_changed (false)
3864 {
3865         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3866         Gtk::Window* toplevel = _editor->current_toplevel();
3867         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3868
3869         assert (_marker);
3870
3871         _points.push_back (ArdourCanvas::Duple (0, 0));
3872
3873         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3874 }
3875
3876 MarkerDrag::~MarkerDrag ()
3877 {
3878         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3879                 delete i->location;
3880         }
3881 }
3882
3883 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3884 {
3885         location = new Location (*l);
3886         markers.push_back (m);
3887         move_both = false;
3888 }
3889
3890 void
3891 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3892 {
3893         Drag::start_grab (event, cursor);
3894
3895         bool is_start;
3896
3897         Location *location = _editor->find_location_from_marker (_marker, is_start);
3898         _editor->_dragging_edit_point = true;
3899
3900         update_item (location);
3901
3902         // _drag_line->show();
3903         // _line->raise_to_top();
3904
3905         if (is_start) {
3906                 show_verbose_cursor_time (location->start());
3907         } else {
3908                 show_verbose_cursor_time (location->end());
3909         }
3910         setup_snap_delta (is_start ? location->start() : location->end());
3911
3912         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3913
3914         switch (op) {
3915         case Selection::Toggle:
3916                 /* we toggle on the button release */
3917                 break;
3918         case Selection::Set:
3919                 if (!_editor->selection->selected (_marker)) {
3920                         _editor->selection->set (_marker);
3921                         _selection_changed = true;
3922                 }
3923                 break;
3924         case Selection::Extend:
3925         {
3926                 Locations::LocationList ll;
3927                 list<ArdourMarker*> to_add;
3928                 framepos_t s, e;
3929                 _editor->selection->markers.range (s, e);
3930                 s = min (_marker->position(), s);
3931                 e = max (_marker->position(), e);
3932                 s = min (s, e);
3933                 e = max (s, e);
3934                 if (e < max_framepos) {
3935                         ++e;
3936                 }
3937                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3938                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3939                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3940                         if (lm) {
3941                                 if (lm->start) {
3942                                         to_add.push_back (lm->start);
3943                                 }
3944                                 if (lm->end) {
3945                                         to_add.push_back (lm->end);
3946                                 }
3947                         }
3948                 }
3949                 if (!to_add.empty()) {
3950                         _editor->selection->add (to_add);
3951                         _selection_changed = true;
3952                 }
3953                 break;
3954         }
3955         case Selection::Add:
3956                 _editor->selection->add (_marker);
3957                 _selection_changed = true;
3958
3959                 break;
3960         }
3961
3962         /* Set up copies for us to manipulate during the drag
3963          */
3964
3965         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3966
3967                 Location* l = _editor->find_location_from_marker (*i, is_start);
3968
3969                 if (!l) {
3970                         continue;
3971                 }
3972
3973                 if (l->is_mark()) {
3974                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3975                 } else {
3976                         /* range: check that the other end of the range isn't
3977                            already there.
3978                         */
3979                         CopiedLocationInfo::iterator x;
3980                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3981                                 if (*(*x).location == *l) {
3982                                         break;
3983                                 }
3984                         }
3985                         if (x == _copied_locations.end()) {
3986                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3987                         } else {
3988                                 (*x).markers.push_back (*i);
3989                                 (*x).move_both = true;
3990                         }
3991                 }
3992
3993         }
3994 }
3995
3996 void
3997 MarkerDrag::setup_pointer_frame_offset ()
3998 {
3999         bool is_start;
4000         Location *location = _editor->find_location_from_marker (_marker, is_start);
4001         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
4002 }
4003
4004 void
4005 MarkerDrag::motion (GdkEvent* event, bool)
4006 {
4007         framecnt_t f_delta = 0;
4008         bool is_start;
4009         bool move_both = false;
4010         Location *real_location;
4011         Location *copy_location = 0;
4012         framecnt_t const sd = snap_delta (event->button.state);
4013
4014         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
4015         framepos_t next = newframe;
4016
4017         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
4018                 move_both = true;
4019         }
4020
4021         CopiedLocationInfo::iterator x;
4022
4023         /* find the marker we're dragging, and compute the delta */
4024
4025         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4026
4027                 copy_location = (*x).location;
4028
4029                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4030
4031                         /* this marker is represented by this
4032                          * CopiedLocationMarkerInfo
4033                          */
4034
4035                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4036                                 /* que pasa ?? */
4037                                 return;
4038                         }
4039
4040                         if (real_location->is_mark()) {
4041                                 f_delta = newframe - copy_location->start();
4042                         } else {
4043
4044
4045                                 switch (_marker->type()) {
4046                                 case ArdourMarker::SessionStart:
4047                                 case ArdourMarker::RangeStart:
4048                                 case ArdourMarker::LoopStart:
4049                                 case ArdourMarker::PunchIn:
4050                                         f_delta = newframe - copy_location->start();
4051                                         break;
4052
4053                                 case ArdourMarker::SessionEnd:
4054                                 case ArdourMarker::RangeEnd:
4055                                 case ArdourMarker::LoopEnd:
4056                                 case ArdourMarker::PunchOut:
4057                                         f_delta = newframe - copy_location->end();
4058                                         break;
4059                                 default:
4060                                         /* what kind of marker is this ? */
4061                                         return;
4062                                 }
4063                         }
4064
4065                         break;
4066                 }
4067         }
4068
4069         if (x == _copied_locations.end()) {
4070                 /* hmm, impossible - we didn't find the dragged marker */
4071                 return;
4072         }
4073
4074         /* now move them all */
4075
4076         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4077
4078                 copy_location = x->location;
4079
4080                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4081                         continue;
4082                 }
4083
4084                 if (real_location->locked()) {
4085                         continue;
4086                 }
4087
4088                 if (copy_location->is_mark()) {
4089
4090                         /* now move it */
4091
4092                         copy_location->set_start (copy_location->start() + f_delta);
4093
4094                 } else {
4095
4096                         framepos_t new_start = copy_location->start() + f_delta;
4097                         framepos_t new_end = copy_location->end() + f_delta;
4098
4099                         if (is_start) { // start-of-range marker
4100
4101                                 if (move_both || (*x).move_both) {
4102                                         copy_location->set_start (new_start);
4103                                         copy_location->set_end (new_end);
4104                                 } else  if (new_start < copy_location->end()) {
4105                                         copy_location->set_start (new_start);
4106                                 } else if (newframe > 0) {
4107                                         //_editor->snap_to (next, RoundUpAlways, true);
4108                                         copy_location->set_end (next);
4109                                         copy_location->set_start (newframe);
4110                                 }
4111
4112                         } else { // end marker
4113
4114                                 if (move_both || (*x).move_both) {
4115                                         copy_location->set_end (new_end);
4116                                         copy_location->set_start (new_start);
4117                                 } else if (new_end > copy_location->start()) {
4118                                         copy_location->set_end (new_end);
4119                                 } else if (newframe > 0) {
4120                                         //_editor->snap_to (next, RoundDownAlways, true);
4121                                         copy_location->set_start (next);
4122                                         copy_location->set_end (newframe);
4123                                 }
4124                         }
4125                 }
4126
4127                 update_item (copy_location);
4128
4129                 /* now lookup the actual GUI items used to display this
4130                  * location and move them to wherever the copy of the location
4131                  * is now. This means that the logic in ARDOUR::Location is
4132                  * still enforced, even though we are not (yet) modifying
4133                  * the real Location itself.
4134                  */
4135
4136                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4137
4138                 if (lm) {
4139                         lm->set_position (copy_location->start(), copy_location->end());
4140                 }
4141
4142         }
4143
4144         assert (!_copied_locations.empty());
4145
4146         show_verbose_cursor_time (newframe);
4147 }
4148
4149 void
4150 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4151 {
4152         if (!movement_occurred) {
4153
4154                 if (was_double_click()) {
4155                         _editor->rename_marker (_marker);
4156                         return;
4157                 }
4158
4159                 /* just a click, do nothing but finish
4160                    off the selection process
4161                 */
4162
4163                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4164                 switch (op) {
4165                 case Selection::Set:
4166                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4167                                 _editor->selection->set (_marker);
4168                                 _selection_changed = true;
4169                         }
4170                         break;
4171
4172                 case Selection::Toggle:
4173                         /* we toggle on the button release, click only */
4174                         _editor->selection->toggle (_marker);
4175                         _selection_changed = true;
4176
4177                         break;
4178
4179                 case Selection::Extend:
4180                 case Selection::Add:
4181                         break;
4182                 }
4183
4184                 if (_selection_changed) {
4185                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4186                         _editor->commit_reversible_selection_op();
4187                 }
4188
4189                 return;
4190         }
4191
4192         _editor->_dragging_edit_point = false;
4193
4194         XMLNode &before = _editor->session()->locations()->get_state();
4195         bool in_command = false;
4196
4197         MarkerSelection::iterator i;
4198         CopiedLocationInfo::iterator x;
4199         bool is_start;
4200
4201         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4202              x != _copied_locations.end() && i != _editor->selection->markers.end();
4203              ++i, ++x) {
4204
4205                 Location * location = _editor->find_location_from_marker (*i, is_start);
4206
4207                 if (location) {
4208
4209                         if (location->locked()) {
4210                                 continue;
4211                         }
4212                         if (!in_command) {
4213                                 _editor->begin_reversible_command ( _("move marker") );
4214                                 in_command = true;
4215                         }
4216                         if (location->is_mark()) {
4217                                 location->set_start (((*x).location)->start());
4218                         } else {
4219                                 location->set (((*x).location)->start(), ((*x).location)->end());
4220                         }
4221                 }
4222         }
4223
4224         if (in_command) {
4225                 XMLNode &after = _editor->session()->locations()->get_state();
4226                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4227                 _editor->commit_reversible_command ();
4228         }
4229 }
4230
4231 void
4232 MarkerDrag::aborted (bool movement_occurred)
4233 {
4234         if (!movement_occurred) {
4235                 return;
4236         }
4237
4238         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4239
4240                 /* move all markers to their original location */
4241
4242
4243                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4244
4245                         bool is_start;
4246                         Location * location = _editor->find_location_from_marker (*m, is_start);
4247
4248                         if (location) {
4249                                 (*m)->set_position (is_start ? location->start() : location->end());
4250                         }
4251                 }
4252         }
4253 }
4254
4255 void
4256 MarkerDrag::update_item (Location*)
4257 {
4258         /* noop */
4259 }
4260
4261 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4262         : Drag (e, i)
4263         , _fixed_grab_x (0.0)
4264         , _fixed_grab_y (0.0)
4265         , _cumulative_x_drag (0.0)
4266         , _cumulative_y_drag (0.0)
4267         , _pushing (false)
4268         , _final_index (0)
4269 {
4270         if (_zero_gain_fraction < 0.0) {
4271                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4272         }
4273
4274         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4275
4276         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4277         assert (_point);
4278 }
4279
4280
4281 void
4282 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4283 {
4284         Drag::start_grab (event, _editor->cursors()->fader);
4285
4286         // start the grab at the center of the control point so
4287         // the point doesn't 'jump' to the mouse after the first drag
4288         _fixed_grab_x = _point->get_x();
4289         _fixed_grab_y = _point->get_y();
4290
4291         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4292         setup_snap_delta (pos);
4293
4294         float const fraction = 1 - (_point->get_y() / _point->line().height());
4295         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4296
4297         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4298
4299         if (!_point->can_slide ()) {
4300                 _x_constrained = true;
4301         }
4302 }
4303
4304 void
4305 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4306 {
4307         double dx = _drags->current_pointer_x() - last_pointer_x();
4308         double dy = current_pointer_y() - last_pointer_y();
4309         bool need_snap = true;
4310
4311         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4312                 dx *= 0.1;
4313                 dy *= 0.1;
4314                 need_snap = false;
4315         }
4316
4317         /* coordinate in pixels relative to the start of the region (for region-based automation)
4318            or track (for track-based automation) */
4319         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4320         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4321
4322         // calculate zero crossing point. back off by .01 to stay on the
4323         // positive side of zero
4324         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4325
4326         if (_x_constrained) {
4327                 cx = _fixed_grab_x;
4328         }
4329         if (_y_constrained) {
4330                 cy = _fixed_grab_y;
4331         }
4332
4333         _cumulative_x_drag = cx - _fixed_grab_x;
4334         _cumulative_y_drag = cy - _fixed_grab_y;
4335
4336         cx = max (0.0, cx);
4337         cy = max (0.0, cy);
4338         cy = min ((double) _point->line().height(), cy);
4339
4340         // make sure we hit zero when passing through
4341         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4342                 cy = zero_gain_y;
4343         }
4344
4345         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4346
4347         if (!_x_constrained && need_snap) {
4348                 _editor->snap_to_with_modifier (cx_frames, event);
4349         }
4350
4351         cx_frames -= snap_delta (event->button.state);
4352         cx_frames = min (cx_frames, _point->line().maximum_time());
4353
4354         float const fraction = 1.0 - (cy / _point->line().height());
4355
4356         if (first_motion) {
4357                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4358                 _editor->begin_reversible_command (_("automation event move"));
4359                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4360         }
4361         pair<double, float> result;
4362         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4363
4364         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4365 }
4366
4367 void
4368 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4369 {
4370         if (!movement_occurred) {
4371
4372                 /* just a click */
4373                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4374                         _editor->reset_point_selection ();
4375                 }
4376
4377         } else {
4378                 _point->line().end_drag (_pushing, _final_index);
4379                 _editor->commit_reversible_command ();
4380         }
4381 }
4382
4383 void
4384 ControlPointDrag::aborted (bool)
4385 {
4386         _point->line().reset ();
4387 }
4388
4389 bool
4390 ControlPointDrag::active (Editing::MouseMode m)
4391 {
4392         if (m == Editing::MouseDraw) {
4393                 /* always active in mouse draw */
4394                 return true;
4395         }
4396
4397         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4398         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4399 }
4400
4401 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4402         : Drag (e, i)
4403         , _line (0)
4404         , _fixed_grab_x (0.0)
4405         , _fixed_grab_y (0.0)
4406         , _cumulative_y_drag (0)
4407         , _before (0)
4408         , _after (0)
4409 {
4410         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4411 }
4412
4413 void
4414 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4415 {
4416         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4417         assert (_line);
4418
4419         _item = &_line->grab_item ();
4420
4421         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4422            origin, and ditto for y.
4423         */
4424
4425         double mx = event->button.x;
4426         double my = event->button.y;
4427
4428         _line->grab_item().canvas_to_item (mx, my);
4429
4430         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4431
4432         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4433                 /* no adjacent points */
4434                 return;
4435         }
4436
4437         Drag::start_grab (event, _editor->cursors()->fader);
4438
4439         /* store grab start in item frame */
4440         double const bx = _line->nth (_before)->get_x();
4441         double const ax = _line->nth (_after)->get_x();
4442         double const click_ratio = (ax - mx) / (ax - bx);
4443
4444         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4445
4446         _fixed_grab_x = mx;
4447         _fixed_grab_y = cy;
4448
4449         double fraction = 1.0 - (cy / _line->height());
4450
4451         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4452 }
4453
4454 void
4455 LineDrag::motion (GdkEvent* event, bool first_move)
4456 {
4457         double dy = current_pointer_y() - last_pointer_y();
4458
4459         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4460                 dy *= 0.1;
4461         }
4462
4463         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4464
4465         _cumulative_y_drag = cy - _fixed_grab_y;
4466
4467         cy = max (0.0, cy);
4468         cy = min ((double) _line->height(), cy);
4469
4470         double const fraction = 1.0 - (cy / _line->height());
4471         uint32_t ignored;
4472
4473         if (first_move) {
4474                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4475
4476                 _editor->begin_reversible_command (_("automation range move"));
4477                 _line->start_drag_line (_before, _after, initial_fraction);
4478         }
4479
4480         /* we are ignoring x position for this drag, so we can just pass in anything */
4481         pair<double, float> result;
4482
4483         result = _line->drag_motion (0, fraction, true, false, ignored);
4484         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4485 }
4486
4487 void
4488 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4489 {
4490         if (movement_occurred) {
4491                 motion (event, false);
4492                 _line->end_drag (false, 0);
4493                 _editor->commit_reversible_command ();
4494         } else {
4495                 /* add a new control point on the line */
4496
4497                 AutomationTimeAxisView* atv;
4498
4499                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4500                         framepos_t where = grab_frame ();
4501
4502                         double cx = 0;
4503                         double cy = _fixed_grab_y;
4504
4505                         _line->grab_item().item_to_canvas (cx, cy);
4506
4507                         atv->add_automation_event (event, where, cy, false);
4508                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4509                         AudioRegionView* arv;
4510
4511                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4512                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4513                         }
4514                 }
4515         }
4516 }
4517
4518 void
4519 LineDrag::aborted (bool)
4520 {
4521         _line->reset ();
4522 }
4523
4524 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4525         : Drag (e, i),
4526           _line (0),
4527           _arv (0),
4528           _region_view_grab_x (0.0),
4529           _cumulative_x_drag (0),
4530           _before (0.0),
4531           _max_x (0)
4532 {
4533         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4534 }
4535
4536 void
4537 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4538 {
4539         Drag::start_grab (event);
4540
4541         _line = reinterpret_cast<Line*> (_item);
4542         assert (_line);
4543
4544         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4545
4546         double cx = event->button.x;
4547         double cy = event->button.y;
4548
4549         _item->parent()->canvas_to_item (cx, cy);
4550
4551         /* store grab start in parent frame */
4552         _region_view_grab_x = cx;
4553
4554         _before = *(float*) _item->get_data ("position");
4555
4556         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4557
4558         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4559 }
4560
4561 void
4562 FeatureLineDrag::motion (GdkEvent*, bool)
4563 {
4564         double dx = _drags->current_pointer_x() - last_pointer_x();
4565
4566         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4567
4568         _cumulative_x_drag += dx;
4569
4570         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4571
4572         if (cx > _max_x){
4573                 cx = _max_x;
4574         }
4575         else if(cx < 0){
4576                 cx = 0;
4577         }
4578
4579         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4580         assert (bbox);
4581         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4582
4583         float *pos = new float;
4584         *pos = cx;
4585
4586         _line->set_data ("position", pos);
4587
4588         _before = cx;
4589 }
4590
4591 void
4592 FeatureLineDrag::finished (GdkEvent*, bool)
4593 {
4594         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4595         _arv->update_transient(_before, _before);
4596 }
4597
4598 void
4599 FeatureLineDrag::aborted (bool)
4600 {
4601         //_line->reset ();
4602 }
4603
4604 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4605         : Drag (e, i)
4606         , _vertical_only (false)
4607 {
4608         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4609 }
4610
4611 void
4612 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4613 {
4614         Drag::start_grab (event);
4615         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4616 }
4617
4618 void
4619 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4620 {
4621         framepos_t start;
4622         framepos_t end;
4623         double y1;
4624         double y2;
4625
4626         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4627
4628         framepos_t grab = grab_frame ();
4629         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4630                 _editor->snap_to_with_modifier (grab, event);
4631         } else {
4632                 grab = raw_grab_frame ();
4633         }
4634
4635         /* base start and end on initial click position */
4636
4637         if (pf < grab) {
4638                 start = pf;
4639                 end = grab;
4640         } else {
4641                 end = pf;
4642                 start = grab;
4643         }
4644
4645         if (current_pointer_y() < grab_y()) {
4646                 y1 = current_pointer_y();
4647                 y2 = grab_y();
4648         } else {
4649                 y2 = current_pointer_y();
4650                 y1 = grab_y();
4651         }
4652
4653         if (start != end || y1 != y2) {
4654
4655                 double x1 = _editor->sample_to_pixel (start);
4656                 double x2 = _editor->sample_to_pixel (end);
4657                 const double min_dimension = 2.0;
4658
4659                 if (_vertical_only) {
4660                         /* fixed 10 pixel width */
4661                         x2 = x1 + 10;
4662                 } else {
4663                         if (x2 < x1) {
4664                                 x2 = min (x1 - min_dimension, x2);
4665                         } else {
4666                                 x2 = max (x1 + min_dimension, x2);
4667                         }
4668                 }
4669
4670                 if (y2 < y1) {
4671                         y2 = min (y1 - min_dimension, y2);
4672                 } else {
4673                         y2 = max (y1 + min_dimension, y2);
4674                 }
4675
4676                 /* translate rect into item space and set */
4677
4678                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4679
4680                 /* this drag is a _trackview_only == true drag, so the y1 and
4681                  * y2 (computed using current_pointer_y() and grab_y()) will be
4682                  * relative to the top of the trackview group). The
4683                  * rubberband rect has the same parent/scroll offset as the
4684                  * the trackview group, so we can use the "r" rect directly
4685                  * to set the shape of the rubberband.
4686                  */
4687
4688                 _editor->rubberband_rect->set (r);
4689                 _editor->rubberband_rect->show();
4690                 _editor->rubberband_rect->raise_to_top();
4691
4692                 show_verbose_cursor_time (pf);
4693
4694                 do_select_things (event, true);
4695         }
4696 }
4697
4698 void
4699 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4700 {
4701         framepos_t x1;
4702         framepos_t x2;
4703         framepos_t grab = grab_frame ();
4704         framepos_t lpf = last_pointer_frame ();
4705
4706         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4707                 grab = raw_grab_frame ();
4708                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4709         }
4710
4711         if (grab < lpf) {
4712                 x1 = grab;
4713                 x2 = lpf;
4714         } else {
4715                 x2 = grab;
4716                 x1 = lpf;
4717         }
4718
4719         double y1;
4720         double y2;
4721
4722         if (current_pointer_y() < grab_y()) {
4723                 y1 = current_pointer_y();
4724                 y2 = grab_y();
4725         } else {
4726                 y2 = current_pointer_y();
4727                 y1 = grab_y();
4728         }
4729
4730         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4731 }
4732
4733 void
4734 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4735 {
4736         if (movement_occurred) {
4737
4738                 motion (event, false);
4739                 do_select_things (event, false);
4740
4741         } else {
4742
4743                 /* just a click */
4744
4745                 bool do_deselect = true;
4746                 MidiTimeAxisView* mtv;
4747
4748                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4749                         /* MIDI track */
4750                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4751                                 /* nothing selected */
4752                                 add_midi_region (mtv, true);
4753                                 do_deselect = false;
4754                         }
4755                 }
4756
4757                 /* do not deselect if Primary or Tertiary (toggle-select or
4758                  * extend-select are pressed.
4759                  */
4760
4761                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4762                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4763                     do_deselect) {
4764                         deselect_things ();
4765                 }
4766
4767         }
4768
4769         _editor->rubberband_rect->hide();
4770 }
4771
4772 void
4773 RubberbandSelectDrag::aborted (bool)
4774 {
4775         _editor->rubberband_rect->hide ();
4776 }
4777
4778 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4779         : RegionDrag (e, i, p, v)
4780 {
4781         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4782 }
4783
4784 void
4785 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4786 {
4787         Drag::start_grab (event, cursor);
4788
4789         _editor->get_selection().add (_primary);
4790
4791         framepos_t where = _primary->region()->position();
4792         setup_snap_delta (where);
4793
4794         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4795 }
4796
4797 void
4798 TimeFXDrag::motion (GdkEvent* event, bool)
4799 {
4800         RegionView* rv = _primary;
4801         StreamView* cv = rv->get_time_axis_view().view ();
4802
4803         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4804         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4805         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4806         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4807         _editor->snap_to_with_modifier (pf, event);
4808         pf -= snap_delta (event->button.state);
4809
4810         if (pf > rv->region()->position()) {
4811                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4812         }
4813
4814         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4815 }
4816
4817 void
4818 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4819 {
4820         /* this may have been a single click, no drag. We still want the dialog
4821            to show up in that case, so that the user can manually edit the
4822            parameters for the timestretch.
4823         */
4824
4825         float fraction = 1.0;
4826
4827         if (movement_occurred) {
4828
4829                 motion (event, false);
4830
4831                 _primary->get_time_axis_view().hide_timestretch ();
4832
4833                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4834
4835                 if (adjusted_frame_pos < _primary->region()->position()) {
4836                         /* backwards drag of the left edge - not usable */
4837                         return;
4838                 }
4839
4840                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4841
4842                 fraction = (double) newlen / (double) _primary->region()->length();
4843
4844 #ifndef USE_RUBBERBAND
4845                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4846                 if (_primary->region()->data_type() == DataType::AUDIO) {
4847                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4848                 }
4849 #endif
4850         }
4851
4852         if (!_editor->get_selection().regions.empty()) {
4853                 /* primary will already be included in the selection, and edit
4854                    group shared editing will propagate selection across
4855                    equivalent regions, so just use the current region
4856                    selection.
4857                 */
4858
4859                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4860                         error << _("An error occurred while executing time stretch operation") << endmsg;
4861                 }
4862         }
4863 }
4864
4865 void
4866 TimeFXDrag::aborted (bool)
4867 {
4868         _primary->get_time_axis_view().hide_timestretch ();
4869 }
4870
4871 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4872         : Drag (e, i)
4873 {
4874         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4875 }
4876
4877 void
4878 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4879 {
4880         Drag::start_grab (event);
4881 }
4882
4883 void
4884 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4885 {
4886         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4887 }
4888
4889 void
4890 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4891 {
4892         if (movement_occurred && _editor->session()) {
4893                 /* make sure we stop */
4894                 _editor->session()->request_transport_speed (0.0);
4895         }
4896 }
4897
4898 void
4899 ScrubDrag::aborted (bool)
4900 {
4901         /* XXX: TODO */
4902 }
4903
4904 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4905         : Drag (e, i)
4906         , _operation (o)
4907         , _add (false)
4908         , _time_selection_at_start (!_editor->get_selection().time.empty())
4909 {
4910         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4911
4912         if (_time_selection_at_start) {
4913                 start_at_start = _editor->get_selection().time.start();
4914                 end_at_start = _editor->get_selection().time.end_frame();
4915         }
4916 }
4917
4918 void
4919 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4920 {
4921         if (_editor->session() == 0) {
4922                 return;
4923         }
4924
4925         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4926
4927         switch (_operation) {
4928         case CreateSelection:
4929                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4930                         _add = true;
4931                 } else {
4932                         _add = false;
4933                 }
4934                 cursor = _editor->cursors()->selector;
4935                 Drag::start_grab (event, cursor);
4936                 break;
4937
4938         case SelectionStartTrim:
4939                 if (_editor->clicked_axisview) {
4940                         _editor->clicked_axisview->order_selection_trims (_item, true);
4941                 }
4942                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4943                 break;
4944
4945         case SelectionEndTrim:
4946                 if (_editor->clicked_axisview) {
4947                         _editor->clicked_axisview->order_selection_trims (_item, false);
4948                 }
4949                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4950                 break;
4951
4952         case SelectionMove:
4953                 Drag::start_grab (event, cursor);
4954                 break;
4955
4956         case SelectionExtend:
4957                 Drag::start_grab (event, cursor);
4958                 break;
4959         }
4960
4961         if (_operation == SelectionMove) {
4962                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4963         } else {
4964                 show_verbose_cursor_time (adjusted_current_frame (event));
4965         }
4966 }
4967
4968 void
4969 SelectionDrag::setup_pointer_frame_offset ()
4970 {
4971         switch (_operation) {
4972         case CreateSelection:
4973                 _pointer_frame_offset = 0;
4974                 break;
4975
4976         case SelectionStartTrim:
4977         case SelectionMove:
4978                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4979                 break;
4980
4981         case SelectionEndTrim:
4982                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4983                 break;
4984
4985         case SelectionExtend:
4986                 break;
4987         }
4988 }
4989
4990 void
4991 SelectionDrag::motion (GdkEvent* event, bool first_move)
4992 {
4993         framepos_t start = 0;
4994         framepos_t end = 0;
4995         framecnt_t length = 0;
4996         framecnt_t distance = 0;
4997
4998         framepos_t const pending_position = adjusted_current_frame (event);
4999
5000         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
5001                 return;
5002         }
5003
5004         switch (_operation) {
5005         case CreateSelection:
5006         {
5007                 framepos_t grab = grab_frame ();
5008
5009                 if (first_move) {
5010                         grab = adjusted_current_frame (event, false);
5011                         if (grab < pending_position) {
5012                                 _editor->snap_to (grab, RoundDownMaybe);
5013                         }  else {
5014                                 _editor->snap_to (grab, RoundUpMaybe);
5015                         }
5016                 }
5017
5018                 if (pending_position < grab) {
5019                         start = pending_position;
5020                         end = grab;
5021                 } else {
5022                         end = pending_position;
5023                         start = grab;
5024                 }
5025
5026                 /* first drag: Either add to the selection
5027                    or create a new selection
5028                 */
5029
5030                 if (first_move) {
5031
5032                         if (_add) {
5033
5034                                 /* adding to the selection */
5035                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5036                                 _editor->clicked_selection = _editor->selection->add (start, end);
5037                                 _add = false;
5038
5039                         } else {
5040
5041                                 /* new selection */
5042
5043                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5044                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5045                                 }
5046
5047                                 _editor->clicked_selection = _editor->selection->set (start, end);
5048                         }
5049                 }
5050
5051                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5052                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5053                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5054                 if (atest) {
5055                         _editor->selection->add (atest);
5056                         break;
5057                 }
5058
5059                 /* select all tracks within the rectangle that we've marked out so far */
5060                 TrackViewList new_selection;
5061                 TrackViewList& all_tracks (_editor->track_views);
5062
5063                 ArdourCanvas::Coord const top = grab_y();
5064                 ArdourCanvas::Coord const bottom = current_pointer_y();
5065
5066                 if (top >= 0 && bottom >= 0) {
5067
5068                         //first, find the tracks that are covered in the y range selection
5069                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5070                                 if ((*i)->covered_by_y_range (top, bottom)) {
5071                                         new_selection.push_back (*i);
5072                                 }
5073                         }
5074
5075                         //now find any tracks that are GROUPED with the tracks we selected
5076                         TrackViewList grouped_add = new_selection;
5077                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5078                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5079                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5080                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5081                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5082                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5083                                                         grouped_add.push_back (*j);
5084                                         }
5085                                 }
5086                         }
5087
5088                         //now compare our list with the current selection, and add or remove as necessary
5089                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5090                         TrackViewList tracks_to_add;
5091                         TrackViewList tracks_to_remove;
5092                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5093                                 if ( !_editor->selection->tracks.contains ( *i ) )
5094                                         tracks_to_add.push_back ( *i );
5095                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5096                                 if ( !grouped_add.contains ( *i ) )
5097                                         tracks_to_remove.push_back ( *i );
5098                         _editor->selection->add(tracks_to_add);
5099                         _editor->selection->remove(tracks_to_remove);
5100
5101                 }
5102         }
5103         break;
5104
5105         case SelectionStartTrim:
5106
5107                 end = _editor->selection->time[_editor->clicked_selection].end;
5108
5109                 if (pending_position > end) {
5110                         start = end;
5111                 } else {
5112                         start = pending_position;
5113                 }
5114                 break;
5115
5116         case SelectionEndTrim:
5117
5118                 start = _editor->selection->time[_editor->clicked_selection].start;
5119
5120                 if (pending_position < start) {
5121                         end = start;
5122                 } else {
5123                         end = pending_position;
5124                 }
5125
5126                 break;
5127
5128         case SelectionMove:
5129
5130                 start = _editor->selection->time[_editor->clicked_selection].start;
5131                 end = _editor->selection->time[_editor->clicked_selection].end;
5132
5133                 length = end - start;
5134                 distance = pending_position - start;
5135                 start = pending_position;
5136                 _editor->snap_to (start);
5137
5138                 end = start + length;
5139
5140                 break;
5141
5142         case SelectionExtend:
5143                 break;
5144         }
5145
5146         if (start != end) {
5147                 switch (_operation) {
5148                 case SelectionMove:
5149                         if (_time_selection_at_start) {
5150                                 _editor->selection->move_time (distance);
5151                         }
5152                         break;
5153                 default:
5154                         _editor->selection->replace (_editor->clicked_selection, start, end);
5155                 }
5156         }
5157
5158         if (_operation == SelectionMove) {
5159                 show_verbose_cursor_time(start);
5160         } else {
5161                 show_verbose_cursor_time(pending_position);
5162         }
5163 }
5164
5165 void
5166 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5167 {
5168         Session* s = _editor->session();
5169
5170         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5171         if (movement_occurred) {
5172                 motion (event, false);
5173                 /* XXX this is not object-oriented programming at all. ick */
5174                 if (_editor->selection->time.consolidate()) {
5175                         _editor->selection->TimeChanged ();
5176                 }
5177
5178                 /* XXX what if its a music time selection? */
5179                 if (s) {
5180                         if (s->get_play_range() && s->transport_rolling()) {
5181                                 s->request_play_range (&_editor->selection->time, true);
5182                         } else if (!s->config.get_external_sync()) {
5183                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5184                                         if (_operation == SelectionEndTrim)
5185                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5186                                         else
5187                                                 s->request_locate (_editor->get_selection().time.start());
5188                                 }
5189                         }
5190
5191                         if (_editor->get_selection().time.length() != 0) {
5192                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5193                         } else {
5194                                 s->clear_range_selection ();
5195                         }
5196                 }
5197
5198         } else {
5199                 /* just a click, no pointer movement.
5200                  */
5201
5202                 if (_operation == SelectionExtend) {
5203                         if (_time_selection_at_start) {
5204                                 framepos_t pos = adjusted_current_frame (event, false);
5205                                 framepos_t start = min (pos, start_at_start);
5206                                 framepos_t end = max (pos, end_at_start);
5207                                 _editor->selection->set (start, end);
5208                         }
5209                 } else {
5210                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5211                                 if (_editor->clicked_selection) {
5212                                         _editor->selection->remove (_editor->clicked_selection);
5213                                 }
5214                         } else {
5215                                 if (!_editor->clicked_selection) {
5216                                         _editor->selection->clear_time();
5217                                 }
5218                         }
5219                 }
5220
5221                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5222                         _editor->selection->set (_editor->clicked_axisview);
5223                 }
5224
5225                 if (s && s->get_play_range () && s->transport_rolling()) {
5226                         s->request_stop (false, false);
5227                 }
5228
5229         }
5230
5231         _editor->stop_canvas_autoscroll ();
5232         _editor->clicked_selection = 0;
5233         _editor->commit_reversible_selection_op ();
5234 }
5235
5236 void
5237 SelectionDrag::aborted (bool)
5238 {
5239         /* XXX: TODO */
5240 }
5241
5242 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5243         : Drag (e, i, false),
5244           _operation (o),
5245           _copy (false)
5246 {
5247         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5248
5249         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5250                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5251                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5252         _drag_rect->hide ();
5253
5254         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5255         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5256 }
5257
5258 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5259 {
5260         /* normal canvas items will be cleaned up when their parent group is deleted. But
5261            this item is created as the child of a long-lived parent group, and so we
5262            need to explicitly delete it.
5263         */
5264         delete _drag_rect;
5265 }
5266
5267 void
5268 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5269 {
5270         if (_editor->session() == 0) {
5271                 return;
5272         }
5273
5274         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5275
5276         if (!_editor->temp_location) {
5277                 _editor->temp_location = new Location (*_editor->session());
5278         }
5279
5280         switch (_operation) {
5281         case CreateSkipMarker:
5282         case CreateRangeMarker:
5283         case CreateTransportMarker:
5284         case CreateCDMarker:
5285
5286                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5287                         _copy = true;
5288                 } else {
5289                         _copy = false;
5290                 }
5291                 cursor = _editor->cursors()->selector;
5292                 break;
5293         }
5294
5295         Drag::start_grab (event, cursor);
5296
5297         show_verbose_cursor_time (adjusted_current_frame (event));
5298 }
5299
5300 void
5301 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5302 {
5303         framepos_t start = 0;
5304         framepos_t end = 0;
5305         ArdourCanvas::Rectangle *crect;
5306
5307         switch (_operation) {
5308         case CreateSkipMarker:
5309                 crect = _editor->range_bar_drag_rect;
5310                 break;
5311         case CreateRangeMarker:
5312                 crect = _editor->range_bar_drag_rect;
5313                 break;
5314         case CreateTransportMarker:
5315                 crect = _editor->transport_bar_drag_rect;
5316                 break;
5317         case CreateCDMarker:
5318                 crect = _editor->cd_marker_bar_drag_rect;
5319                 break;
5320         default:
5321                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5322                 return;
5323                 break;
5324         }
5325
5326         framepos_t const pf = adjusted_current_frame (event);
5327
5328         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5329                 framepos_t grab = grab_frame ();
5330                 _editor->snap_to (grab);
5331
5332                 if (pf < grab_frame()) {
5333                         start = pf;
5334                         end = grab;
5335                 } else {
5336                         end = pf;
5337                         start = grab;
5338                 }
5339
5340                 /* first drag: Either add to the selection
5341                    or create a new selection.
5342                 */
5343
5344                 if (first_move) {
5345
5346                         _editor->temp_location->set (start, end);
5347
5348                         crect->show ();
5349
5350                         update_item (_editor->temp_location);
5351                         _drag_rect->show();
5352                         //_drag_rect->raise_to_top();
5353
5354                 }
5355         }
5356
5357         if (start != end) {
5358                 _editor->temp_location->set (start, end);
5359
5360                 double x1 = _editor->sample_to_pixel (start);
5361                 double x2 = _editor->sample_to_pixel (end);
5362                 crect->set_x0 (x1);
5363                 crect->set_x1 (x2);
5364
5365                 update_item (_editor->temp_location);
5366         }
5367
5368         show_verbose_cursor_time (pf);
5369
5370 }
5371
5372 void
5373 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5374 {
5375         Location * newloc = 0;
5376         string rangename;
5377         int flags;
5378
5379         if (movement_occurred) {
5380                 motion (event, false);
5381                 _drag_rect->hide();
5382
5383                 switch (_operation) {
5384                 case CreateSkipMarker:
5385                 case CreateRangeMarker:
5386                 case CreateCDMarker:
5387                     {
5388                         XMLNode &before = _editor->session()->locations()->get_state();
5389                         if (_operation == CreateSkipMarker) {
5390                                 _editor->begin_reversible_command (_("new skip marker"));
5391                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5392                                 flags = Location::IsRangeMarker | Location::IsSkip;
5393                                 _editor->range_bar_drag_rect->hide();
5394                         } else if (_operation == CreateCDMarker) {
5395                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5396                                 _editor->begin_reversible_command (_("new CD marker"));
5397                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5398                                 _editor->cd_marker_bar_drag_rect->hide();
5399                         } else {
5400                                 _editor->begin_reversible_command (_("new skip marker"));
5401                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5402                                 flags = Location::IsRangeMarker;
5403                                 _editor->range_bar_drag_rect->hide();
5404                         }
5405                         newloc = new Location (
5406                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5407                                 );
5408
5409                         _editor->session()->locations()->add (newloc, true);
5410                         XMLNode &after = _editor->session()->locations()->get_state();
5411                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5412                         _editor->commit_reversible_command ();
5413                         break;
5414                     }
5415
5416                 case CreateTransportMarker:
5417                         // popup menu to pick loop or punch
5418                         _editor->new_transport_marker_context_menu (&event->button, _item);
5419                         break;
5420                 }
5421
5422         } else {
5423
5424                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5425
5426                 if (_operation == CreateTransportMarker) {
5427
5428                         /* didn't drag, so just locate */
5429
5430                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5431
5432                 } else if (_operation == CreateCDMarker) {
5433
5434                         /* didn't drag, but mark is already created so do
5435                          * nothing */
5436
5437                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5438
5439                         framepos_t start;
5440                         framepos_t end;
5441
5442                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5443
5444                         if (end == max_framepos) {
5445                                 end = _editor->session()->current_end_frame ();
5446                         }
5447
5448                         if (start == max_framepos) {
5449                                 start = _editor->session()->current_start_frame ();
5450                         }
5451
5452                         switch (_editor->mouse_mode) {
5453                         case MouseObject:
5454                                 /* find the two markers on either side and then make the selection from it */
5455                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5456                                 break;
5457
5458                         case MouseRange:
5459                                 /* find the two markers on either side of the click and make the range out of it */
5460                                 _editor->selection->set (start, end);
5461                                 break;
5462
5463                         default:
5464                                 break;
5465                         }
5466                 }
5467         }
5468
5469         _editor->stop_canvas_autoscroll ();
5470 }
5471
5472 void
5473 RangeMarkerBarDrag::aborted (bool movement_occurred)
5474 {
5475         if (movement_occurred) {
5476                 _drag_rect->hide ();
5477         }
5478 }
5479
5480 void
5481 RangeMarkerBarDrag::update_item (Location* location)
5482 {
5483         double const x1 = _editor->sample_to_pixel (location->start());
5484         double const x2 = _editor->sample_to_pixel (location->end());
5485
5486         _drag_rect->set_x0 (x1);
5487         _drag_rect->set_x1 (x2);
5488 }
5489
5490 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5491         : Drag (e, i)
5492         , _cumulative_dx (0)
5493         , _cumulative_dy (0)
5494         , _was_selected (false)
5495 {
5496         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5497
5498         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5499         assert (_primary);
5500         _region = &_primary->region_view ();
5501         _note_height = _region->midi_stream_view()->note_height ();
5502 }
5503
5504 void
5505 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5506 {
5507         Drag::start_grab (event);
5508         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5509
5510         if (!(_was_selected = _primary->selected())) {
5511
5512                 /* tertiary-click means extend selection - we'll do that on button release,
5513                    so don't add it here, because otherwise we make it hard to figure
5514                    out the "extend-to" range.
5515                 */
5516
5517                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5518
5519                 if (!extend) {
5520                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5521
5522                         if (add) {
5523                                 _region->note_selected (_primary, true);
5524                         } else {
5525                                 _editor->get_selection().clear_points();
5526                                 _region->unique_select (_primary);
5527                         }
5528                 }
5529         }
5530 }
5531
5532 /** @return Current total drag x change in frames */
5533 frameoffset_t
5534 NoteDrag::total_dx (const guint state) const
5535 {
5536         /* dx in frames */
5537         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5538
5539         /* primary note time */
5540         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5541
5542         /* new time of the primary note in session frames */
5543         frameoffset_t st = n + dx + snap_delta (state);
5544
5545         framepos_t const rp = _region->region()->position ();
5546
5547         /* prevent the note being dragged earlier than the region's position */
5548         st = max (st, rp);
5549
5550         /* possibly snap and return corresponding delta */
5551
5552         bool snap = true;
5553
5554         if (ArdourKeyboard::indicates_snap (state)) {
5555                 if (_editor->snap_mode () != SnapOff) {
5556                         snap = false;
5557                 }
5558         } else {
5559                 if (_editor->snap_mode () == SnapOff) {
5560                         snap = false;
5561                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5562                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5563                                 snap = true;
5564                         }
5565                 }
5566         }
5567
5568         frameoffset_t ret;
5569         if (snap) {
5570                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5571                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5572         } else {
5573                 ret = st - n - snap_delta (state);
5574         }
5575         return ret;
5576 }
5577
5578 /** @return Current total drag y change in note number */
5579 int8_t
5580 NoteDrag::total_dy () const
5581 {
5582         MidiStreamView* msv = _region->midi_stream_view ();
5583         double const y = _region->midi_view()->y_position ();
5584         /* new current note */
5585         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5586         /* clamp */
5587         n = max (msv->lowest_note(), n);
5588         n = min (msv->highest_note(), n);
5589         /* and work out delta */
5590         return n - msv->y_to_note (grab_y() - y);
5591 }
5592
5593 void
5594 NoteDrag::motion (GdkEvent * event, bool)
5595 {
5596         /* Total change in x and y since the start of the drag */
5597         frameoffset_t const dx = total_dx (event->button.state);
5598         int8_t const dy = total_dy ();
5599
5600         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5601         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5602         double const tdy = -dy * _note_height - _cumulative_dy;
5603
5604         if (tdx || tdy) {
5605                 _cumulative_dx += tdx;
5606                 _cumulative_dy += tdy;
5607
5608                 int8_t note_delta = total_dy();
5609
5610                 _region->move_selection (tdx, tdy, note_delta);
5611
5612                 /* the new note value may be the same as the old one, but we
5613                  * don't know what that means because the selection may have
5614                  * involved more than one note and we might be doing something
5615                  * odd with them. so show the note value anyway, always.
5616                  */
5617
5618                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5619
5620                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5621         }
5622 }
5623
5624 void
5625 NoteDrag::finished (GdkEvent* ev, bool moved)
5626 {
5627         if (!moved) {
5628                 /* no motion - select note */
5629
5630                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5631                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5632
5633                         bool changed = false;
5634
5635                         if (_was_selected) {
5636                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5637                                 if (add) {
5638                                         _region->note_deselected (_primary);
5639                                         changed = true;
5640                                 } else {
5641                                         _editor->get_selection().clear_points();
5642                                         _region->unique_select (_primary);
5643                                         changed = true;
5644                                 }
5645                         } else {
5646                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5647                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5648
5649                                 if (!extend && !add && _region->selection_size() > 1) {
5650                                         _editor->get_selection().clear_points();
5651                                         _region->unique_select (_primary);
5652                                         changed = true;
5653                                 } else if (extend) {
5654                                         _region->note_selected (_primary, true, true);
5655                                         changed = true;
5656                                 } else {
5657                                         /* it was added during button press */
5658                                         changed = true;
5659
5660                                 }
5661                         }
5662
5663                         if (changed) {
5664                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5665                                 _editor->commit_reversible_selection_op();
5666                         }
5667                 }
5668         } else {
5669                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5670         }
5671 }
5672
5673 void
5674 NoteDrag::aborted (bool)
5675 {
5676         /* XXX: TODO */
5677 }
5678
5679 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5680 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5681         : Drag (editor, atv->base_item ())
5682         , _ranges (r)
5683         , _y_origin (atv->y_position())
5684         , _nothing_to_drag (false)
5685 {
5686         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5687         setup (atv->lines ());
5688 }
5689
5690 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5691 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5692         : Drag (editor, rv->get_canvas_group ())
5693         , _ranges (r)
5694         , _y_origin (rv->get_time_axis_view().y_position())
5695         , _nothing_to_drag (false)
5696         , _integral (false)
5697 {
5698         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5699
5700         list<boost::shared_ptr<AutomationLine> > lines;
5701
5702         AudioRegionView*      audio_view;
5703         AutomationRegionView* automation_view;
5704         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5705                 lines.push_back (audio_view->get_gain_line ());
5706         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5707                 lines.push_back (automation_view->line ());
5708                 _integral = true;
5709         } else {
5710                 error << _("Automation range drag created for invalid region type") << endmsg;
5711         }
5712
5713         setup (lines);
5714 }
5715
5716 /** @param lines AutomationLines to drag.
5717  *  @param offset Offset from the session start to the points in the AutomationLines.
5718  */
5719 void
5720 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5721 {
5722         /* find the lines that overlap the ranges being dragged */
5723         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5724         while (i != lines.end ()) {
5725                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5726                 ++j;
5727
5728                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5729
5730                 /* check this range against all the AudioRanges that we are using */
5731                 list<AudioRange>::const_iterator k = _ranges.begin ();
5732                 while (k != _ranges.end()) {
5733                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5734                                 break;
5735                         }
5736                         ++k;
5737                 }
5738
5739                 /* add it to our list if it overlaps at all */
5740                 if (k != _ranges.end()) {
5741                         Line n;
5742                         n.line = *i;
5743                         n.state = 0;
5744                         n.range = r;
5745                         _lines.push_back (n);
5746                 }
5747
5748                 i = j;
5749         }
5750
5751         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5752 }
5753
5754 double
5755 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5756 {
5757         return 1.0 - ((global_y - _y_origin) / line->height());
5758 }
5759
5760 double
5761 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5762 {
5763         const double v = list->eval(x);
5764         return _integral ? rint(v) : v;
5765 }
5766
5767 void
5768 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5769 {
5770         Drag::start_grab (event, cursor);
5771
5772         /* Get line states before we start changing things */
5773         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5774                 i->state = &i->line->get_state ();
5775                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5776         }
5777
5778         if (_ranges.empty()) {
5779
5780                 /* No selected time ranges: drag all points */
5781                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5782                         uint32_t const N = i->line->npoints ();
5783                         for (uint32_t j = 0; j < N; ++j) {
5784                                 i->points.push_back (i->line->nth (j));
5785                         }
5786                 }
5787
5788         }
5789
5790         if (_nothing_to_drag) {
5791                 return;
5792         }
5793 }
5794
5795 void
5796 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5797 {
5798         if (_nothing_to_drag && !first_move) {
5799                 return;
5800         }
5801
5802         if (first_move) {
5803                 _editor->begin_reversible_command (_("automation range move"));
5804
5805                 if (!_ranges.empty()) {
5806
5807                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5808
5809                                 framecnt_t const half = (i->start + i->end) / 2;
5810
5811                                 /* find the line that this audio range starts in */
5812                                 list<Line>::iterator j = _lines.begin();
5813                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5814                                         ++j;
5815                                 }
5816
5817                                 if (j != _lines.end()) {
5818                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5819
5820                                 /* j is the line that this audio range starts in; fade into it;
5821                                    64 samples length plucked out of thin air.
5822                                 */
5823
5824                                         framepos_t a = i->start + 64;
5825                                         if (a > half) {
5826                                                 a = half;
5827                                         }
5828
5829                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5830                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5831
5832                                         XMLNode &before = the_list->get_state();
5833                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5834                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5835
5836                                         if (add_p || add_q) {
5837                                                 _editor->session()->add_command (
5838                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5839                                         }
5840                                 }
5841
5842                                 /* same thing for the end */
5843
5844                                 j = _lines.begin();
5845                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5846                                         ++j;
5847                                 }
5848
5849                                 if (j != _lines.end()) {
5850                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5851
5852                                         /* j is the line that this audio range starts in; fade out of it;
5853                                            64 samples length plucked out of thin air.
5854                                         */
5855
5856                                         framepos_t b = i->end - 64;
5857                                         if (b < half) {
5858                                                 b = half;
5859                                         }
5860
5861                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5862                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5863
5864                                         XMLNode &before = the_list->get_state();
5865                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5866                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5867
5868                                         if (add_p || add_q) {
5869                                                 _editor->session()->add_command (
5870                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5871                                         }
5872                                 }
5873                         }
5874
5875                         _nothing_to_drag = true;
5876
5877                         /* Find all the points that should be dragged and put them in the relevant
5878                            points lists in the Line structs.
5879                         */
5880
5881                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5882
5883                                 uint32_t const N = i->line->npoints ();
5884                                 for (uint32_t j = 0; j < N; ++j) {
5885
5886                                         /* here's a control point on this line */
5887                                         ControlPoint* p = i->line->nth (j);
5888                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5889
5890                                         /* see if it's inside a range */
5891                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5892                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5893                                                 ++k;
5894                                         }
5895
5896                                         if (k != _ranges.end()) {
5897                                                 /* dragging this point */
5898                                                 _nothing_to_drag = false;
5899                                                 i->points.push_back (p);
5900                                         }
5901                                 }
5902                         }
5903                 }
5904
5905                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5906                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5907                 }
5908         }
5909
5910         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5911                 float const f = y_fraction (l->line, current_pointer_y());
5912                 /* we are ignoring x position for this drag, so we can just pass in anything */
5913                 pair<double, float> result;
5914                 uint32_t ignored;
5915                 result = l->line->drag_motion (0, f, true, false, ignored);
5916                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5917         }
5918 }
5919
5920 void
5921 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5922 {
5923         if (_nothing_to_drag || !motion_occurred) {
5924                 return;
5925         }
5926
5927         motion (event, false);
5928         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5929                 i->line->end_drag (false, 0);
5930         }
5931
5932         _editor->commit_reversible_command ();
5933 }
5934
5935 void
5936 AutomationRangeDrag::aborted (bool)
5937 {
5938         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5939                 i->line->reset ();
5940         }
5941 }
5942
5943 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5944         : view (v)
5945         , initial_time_axis_view (itav)
5946 {
5947         /* note that time_axis_view may be null if the regionview was created
5948          * as part of a copy operation.
5949          */
5950         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5951         layer = v->region()->layer ();
5952         initial_y = v->get_canvas_group()->position().y;
5953         initial_playlist = v->region()->playlist ();
5954         initial_position = v->region()->position ();
5955         initial_end = v->region()->position () + v->region()->length ();
5956 }
5957
5958 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5959         : Drag (e, i->canvas_item ())
5960         , _region_view (r)
5961         , _patch_change (i)
5962         , _cumulative_dx (0)
5963 {
5964         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5965                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5966                                                    grab_frame()));
5967 }
5968
5969 void
5970 PatchChangeDrag::motion (GdkEvent* ev, bool)
5971 {
5972         framepos_t f = adjusted_current_frame (ev);
5973         boost::shared_ptr<Region> r = _region_view->region ();
5974         f = max (f, r->position ());
5975         f = min (f, r->last_frame ());
5976
5977         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5978         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5979         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5980         _cumulative_dx = dxu;
5981 }
5982
5983 void
5984 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5985 {
5986         if (!movement_occurred) {
5987                 return;
5988         }
5989
5990         boost::shared_ptr<Region> r (_region_view->region ());
5991         framepos_t f = adjusted_current_frame (ev);
5992         f = max (f, r->position ());
5993         f = min (f, r->last_frame ());
5994
5995         _region_view->move_patch_change (
5996                 *_patch_change,
5997                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5998                 );
5999 }
6000
6001 void
6002 PatchChangeDrag::aborted (bool)
6003 {
6004         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
6005 }
6006
6007 void
6008 PatchChangeDrag::setup_pointer_frame_offset ()
6009 {
6010         boost::shared_ptr<Region> region = _region_view->region ();
6011         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
6012 }
6013
6014 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
6015         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6016         , _region_view (rv)
6017 {
6018
6019 }
6020
6021 void
6022 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
6023 {
6024         _region_view->update_drag_selection (
6025                 x1, x2, y1, y2,
6026                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
6027 }
6028
6029 void
6030 MidiRubberbandSelectDrag::deselect_things ()
6031 {
6032         /* XXX */
6033 }
6034
6035 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6036         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6037         , _region_view (rv)
6038 {
6039         _vertical_only = true;
6040 }
6041
6042 void
6043 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6044 {
6045         double const y = _region_view->midi_view()->y_position ();
6046
6047         y1 = max (0.0, y1 - y);
6048         y2 = max (0.0, y2 - y);
6049
6050         _region_view->update_vertical_drag_selection (
6051                 y1,
6052                 y2,
6053                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6054                 );
6055 }
6056
6057 void
6058 MidiVerticalSelectDrag::deselect_things ()
6059 {
6060         /* XXX */
6061 }
6062
6063 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6064         : RubberbandSelectDrag (e, i)
6065 {
6066
6067 }
6068
6069 void
6070 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6071 {
6072         if (drag_in_progress) {
6073                 /* We just want to select things at the end of the drag, not during it */
6074                 return;
6075         }
6076
6077         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6078
6079         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6080
6081         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6082
6083         _editor->commit_reversible_selection_op ();
6084 }
6085
6086 void
6087 EditorRubberbandSelectDrag::deselect_things ()
6088 {
6089         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6090
6091         _editor->selection->clear_tracks();
6092         _editor->selection->clear_regions();
6093         _editor->selection->clear_points ();
6094         _editor->selection->clear_lines ();
6095         _editor->selection->clear_midi_notes ();
6096
6097         _editor->commit_reversible_selection_op();
6098 }
6099
6100 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6101         : Drag (e, i)
6102         , _region_view (rv)
6103         , _drag_rect (0)
6104 {
6105         _note[0] = _note[1] = 0;
6106 }
6107
6108 NoteCreateDrag::~NoteCreateDrag ()
6109 {
6110         delete _drag_rect;
6111 }
6112
6113 framecnt_t
6114 NoteCreateDrag::grid_frames (framepos_t t) const
6115 {
6116         bool success;
6117         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6118         if (!success) {
6119                 grid_beats = Evoral::Beats(1);
6120         }
6121
6122         return _region_view->region_beats_to_region_frames (grid_beats);
6123 }
6124
6125 void
6126 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6127 {
6128         Drag::start_grab (event, cursor);
6129
6130         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6131
6132         framepos_t pf = _drags->current_pointer_frame ();
6133         framecnt_t const g = grid_frames (pf);
6134
6135         /* Hack so that we always snap to the note that we are over, instead of snapping
6136            to the next one if we're more than halfway through the one we're over.
6137         */
6138         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6139                 pf -= g / 2;
6140         }
6141
6142         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6143         _note[1] = _note[0];
6144
6145         MidiStreamView* sv = _region_view->midi_stream_view ();
6146         double const x = _editor->sample_to_pixel (_note[0]);
6147         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6148
6149         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6150         _drag_rect->set_outline_all ();
6151         _drag_rect->set_outline_color (0xffffff99);
6152         _drag_rect->set_fill_color (0xffffff66);
6153 }
6154
6155 void
6156 NoteCreateDrag::motion (GdkEvent* event, bool)
6157 {
6158         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6159         double const x0 = _editor->sample_to_pixel (_note[0]);
6160         double const x1 = _editor->sample_to_pixel (_note[1]);
6161         _drag_rect->set_x0 (std::min(x0, x1));
6162         _drag_rect->set_x1 (std::max(x0, x1));
6163 }
6164
6165 void
6166 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6167 {
6168         if (!had_movement) {
6169                 return;
6170         }
6171
6172         framepos_t const start = min (_note[0], _note[1]);
6173         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6174
6175         framecnt_t const g = grid_frames (start);
6176         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6177
6178         if (_editor->snap_mode() == SnapNormal && length < g) {
6179                 length = g;
6180         }
6181
6182         Evoral::Beats length_beats = max (
6183                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6184
6185         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6186 }
6187
6188 double
6189 NoteCreateDrag::y_to_region (double y) const
6190 {
6191         double x = 0;
6192         _region_view->get_canvas_group()->canvas_to_item (x, y);
6193         return y;
6194 }
6195
6196 void
6197 NoteCreateDrag::aborted (bool)
6198 {
6199
6200 }
6201
6202 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6203         : Drag (e, i)
6204         , arv (rv)
6205         , start (start_yn)
6206 {
6207         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6208 }
6209
6210 void
6211 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6212 {
6213         Drag::start_grab (event, cursor);
6214 }
6215
6216 void
6217 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6218 {
6219         double distance;
6220         double new_length;
6221         framecnt_t len;
6222
6223         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6224
6225         if (start) {
6226                 distance = _drags->current_pointer_x() - grab_x();
6227                 len = ar->fade_in()->back()->when;
6228         } else {
6229                 distance = grab_x() - _drags->current_pointer_x();
6230                 len = ar->fade_out()->back()->when;
6231         }
6232
6233         /* how long should it be ? */
6234
6235         new_length = len + _editor->pixel_to_sample (distance);
6236
6237         /* now check with the region that this is legal */
6238
6239         new_length = ar->verify_xfade_bounds (new_length, start);
6240
6241         if (start) {
6242                 arv->reset_fade_in_shape_width (ar, new_length);
6243         } else {
6244                 arv->reset_fade_out_shape_width (ar, new_length);
6245         }
6246 }
6247
6248 void
6249 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6250 {
6251         double distance;
6252         double new_length;
6253         framecnt_t len;
6254
6255         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6256
6257         if (start) {
6258                 distance = _drags->current_pointer_x() - grab_x();
6259                 len = ar->fade_in()->back()->when;
6260         } else {
6261                 distance = grab_x() - _drags->current_pointer_x();
6262                 len = ar->fade_out()->back()->when;
6263         }
6264
6265         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6266
6267         _editor->begin_reversible_command ("xfade trim");
6268         ar->playlist()->clear_owned_changes ();
6269
6270         if (start) {
6271                 ar->set_fade_in_length (new_length);
6272         } else {
6273                 ar->set_fade_out_length (new_length);
6274         }
6275
6276         /* Adjusting the xfade may affect other regions in the playlist, so we need
6277            to get undo Commands from the whole playlist rather than just the
6278            region.
6279         */
6280
6281         vector<Command*> cmds;
6282         ar->playlist()->rdiff (cmds);
6283         _editor->session()->add_commands (cmds);
6284         _editor->commit_reversible_command ();
6285
6286 }
6287
6288 void
6289 CrossfadeEdgeDrag::aborted (bool)
6290 {
6291         if (start) {
6292                 // arv->redraw_start_xfade ();
6293         } else {
6294                 // arv->redraw_end_xfade ();
6295         }
6296 }
6297
6298 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6299         : Drag (e, item, true)
6300         , line (new EditorCursor (*e))
6301 {
6302         line->set_position (pos);
6303         line->show ();
6304 }
6305
6306 RegionCutDrag::~RegionCutDrag ()
6307 {
6308         delete line;
6309 }
6310
6311 void
6312 RegionCutDrag::motion (GdkEvent*, bool)
6313 {
6314         framepos_t where = _drags->current_pointer_frame();
6315         _editor->snap_to (where);
6316
6317         line->set_position (where);
6318 }
6319
6320 void
6321 RegionCutDrag::finished (GdkEvent*, bool)
6322 {
6323         _editor->get_track_canvas()->canvas()->re_enter();
6324
6325         framepos_t pos = _drags->current_pointer_frame();
6326
6327         line->hide ();
6328
6329         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6330
6331         if (rs.empty()) {
6332                 return;
6333         }
6334
6335         _editor->split_regions_at (pos, rs);
6336 }
6337
6338 void
6339 RegionCutDrag::aborted (bool)
6340 {
6341 }