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