gtk2_ardour/editor_drag.cc

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