gtk2_ardour/editor_drag.cc

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